US20050144744A1 - Cleaning apparatus with reciprocating or rotating brush head - Google Patents
Cleaning apparatus with reciprocating or rotating brush head Download PDFInfo
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- US20050144744A1 US20050144744A1 US11/014,626 US1462604A US2005144744A1 US 20050144744 A1 US20050144744 A1 US 20050144744A1 US 1462604 A US1462604 A US 1462604A US 2005144744 A1 US2005144744 A1 US 2005144744A1
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- US
- United States
- Prior art keywords
- head
- housing
- drive shaft
- brush
- brush head
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
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Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C17/00—Devices for cleaning, polishing, rinsing or drying teeth, teeth cavities or prostheses; Saliva removers; Dental appliances for receiving spittle
- A61C17/16—Power-driven cleaning or polishing devices
- A61C17/22—Power-driven cleaning or polishing devices with brushes, cushions, cups, or the like
- A61C17/32—Power-driven cleaning or polishing devices with brushes, cushions, cups, or the like reciprocating or oscillating
- A61C17/34—Power-driven cleaning or polishing devices with brushes, cushions, cups, or the like reciprocating or oscillating driven by electric motor
- A61C17/3409—Power-driven cleaning or polishing devices with brushes, cushions, cups, or the like reciprocating or oscillating driven by electric motor characterized by the movement of the brush body
- A61C17/3427—Rotation around the axis perpendicular to the axis of toothbrush handle and in the plane defined by the bristle holder
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- A—HUMAN NECESSITIES
- A46—BRUSHWARE
- A46B—BRUSHES
- A46B13/00—Brushes with driven brush bodies or carriers
- A46B13/008—Disc-shaped brush bodies
-
- A—HUMAN NECESSITIES
- A46—BRUSHWARE
- A46B—BRUSHES
- A46B13/00—Brushes with driven brush bodies or carriers
- A46B13/02—Brushes with driven brush bodies or carriers power-driven carriers
-
- A—HUMAN NECESSITIES
- A46—BRUSHWARE
- A46B—BRUSHES
- A46B15/00—Other brushes; Brushes with additional arrangements
- A46B15/0002—Arrangements for enhancing monitoring or controlling the brushing process
-
- A—HUMAN NECESSITIES
- A46—BRUSHWARE
- A46B—BRUSHES
- A46B15/00—Other brushes; Brushes with additional arrangements
- A46B15/0002—Arrangements for enhancing monitoring or controlling the brushing process
- A46B15/0016—Arrangements for enhancing monitoring or controlling the brushing process with enhancing means
- A46B15/0036—Arrangements for enhancing monitoring or controlling the brushing process with enhancing means with a lighting means, e.g. laser, bulb
-
- A—HUMAN NECESSITIES
- A46—BRUSHWARE
- A46B—BRUSHES
- A46B5/00—Brush bodies; Handles integral with brushware
- A46B5/002—Brush bodies; Handles integral with brushware having articulations, joints or flexible portions
- A46B5/0054—Brush bodies; Handles integral with brushware having articulations, joints or flexible portions designed to allow relative positioning of the head to body
- A46B5/0075—Brush bodies; Handles integral with brushware having articulations, joints or flexible portions designed to allow relative positioning of the head to body being adjustable and stable during use
-
- A—HUMAN NECESSITIES
- A46—BRUSHWARE
- A46B—BRUSHES
- A46B5/00—Brush bodies; Handles integral with brushware
- A46B5/002—Brush bodies; Handles integral with brushware having articulations, joints or flexible portions
- A46B5/0054—Brush bodies; Handles integral with brushware having articulations, joints or flexible portions designed to allow relative positioning of the head to body
- A46B5/0075—Brush bodies; Handles integral with brushware having articulations, joints or flexible portions designed to allow relative positioning of the head to body being adjustable and stable during use
- A46B5/0083—Mechanical joint allowing adjustment in at least one plane
-
- A—HUMAN NECESSITIES
- A46—BRUSHWARE
- A46B—BRUSHES
- A46B5/00—Brush bodies; Handles integral with brushware
- A46B5/002—Brush bodies; Handles integral with brushware having articulations, joints or flexible portions
- A46B5/0054—Brush bodies; Handles integral with brushware having articulations, joints or flexible portions designed to allow relative positioning of the head to body
- A46B5/0075—Brush bodies; Handles integral with brushware having articulations, joints or flexible portions designed to allow relative positioning of the head to body being adjustable and stable during use
- A46B5/0087—Mechanical joint featuring a ball and socket
-
- A—HUMAN NECESSITIES
- A46—BRUSHWARE
- A46B—BRUSHES
- A46B9/00—Arrangements of the bristles in the brush body
- A46B9/02—Position or arrangement of bristles in relation to surface of the brush body, e.g. inclined, in rows, in groups
- A46B9/028—Bristle profile, the end of the bristle defining a surface other than a single plane or deviating from a simple geometric form, e.g. cylinder, sphere or cone
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C17/00—Devices for cleaning, polishing, rinsing or drying teeth, teeth cavities or prostheses; Saliva removers; Dental appliances for receiving spittle
- A61C17/16—Power-driven cleaning or polishing devices
- A61C17/22—Power-driven cleaning or polishing devices with brushes, cushions, cups, or the like
- A61C17/222—Brush body details, e.g. the shape thereof or connection to handle
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C17/00—Devices for cleaning, polishing, rinsing or drying teeth, teeth cavities or prostheses; Saliva removers; Dental appliances for receiving spittle
- A61C17/16—Power-driven cleaning or polishing devices
- A61C17/22—Power-driven cleaning or polishing devices with brushes, cushions, cups, or the like
- A61C17/24—Power-driven cleaning or polishing devices with brushes, cushions, cups, or the like rotating continuously
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C17/00—Devices for cleaning, polishing, rinsing or drying teeth, teeth cavities or prostheses; Saliva removers; Dental appliances for receiving spittle
- A61C17/16—Power-driven cleaning or polishing devices
- A61C17/22—Power-driven cleaning or polishing devices with brushes, cushions, cups, or the like
- A61C17/32—Power-driven cleaning or polishing devices with brushes, cushions, cups, or the like reciprocating or oscillating
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C17/00—Devices for cleaning, polishing, rinsing or drying teeth, teeth cavities or prostheses; Saliva removers; Dental appliances for receiving spittle
- A61C17/16—Power-driven cleaning or polishing devices
- A61C17/22—Power-driven cleaning or polishing devices with brushes, cushions, cups, or the like
- A61C17/32—Power-driven cleaning or polishing devices with brushes, cushions, cups, or the like reciprocating or oscillating
- A61C17/34—Power-driven cleaning or polishing devices with brushes, cushions, cups, or the like reciprocating or oscillating driven by electric motor
- A61C17/3409—Power-driven cleaning or polishing devices with brushes, cushions, cups, or the like reciprocating or oscillating driven by electric motor characterized by the movement of the brush body
- A61C17/3472—Power-driven cleaning or polishing devices with brushes, cushions, cups, or the like reciprocating or oscillating driven by electric motor characterized by the movement of the brush body with combined movements of the brush body
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C17/00—Devices for cleaning, polishing, rinsing or drying teeth, teeth cavities or prostheses; Saliva removers; Dental appliances for receiving spittle
- A61C17/16—Power-driven cleaning or polishing devices
- A61C17/22—Power-driven cleaning or polishing devices with brushes, cushions, cups, or the like
- A61C17/24—Power-driven cleaning or polishing devices with brushes, cushions, cups, or the like rotating continuously
- A61C17/26—Power-driven cleaning or polishing devices with brushes, cushions, cups, or the like rotating continuously driven by electric motor
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C17/00—Devices for cleaning, polishing, rinsing or drying teeth, teeth cavities or prostheses; Saliva removers; Dental appliances for receiving spittle
- A61C17/16—Power-driven cleaning or polishing devices
- A61C17/22—Power-driven cleaning or polishing devices with brushes, cushions, cups, or the like
- A61C17/32—Power-driven cleaning or polishing devices with brushes, cushions, cups, or the like reciprocating or oscillating
- A61C17/34—Power-driven cleaning or polishing devices with brushes, cushions, cups, or the like reciprocating or oscillating driven by electric motor
- A61C17/3409—Power-driven cleaning or polishing devices with brushes, cushions, cups, or the like reciprocating or oscillating driven by electric motor characterized by the movement of the brush body
- A61C17/3418—Rotation around the axis of the toothbrush handle
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C17/00—Devices for cleaning, polishing, rinsing or drying teeth, teeth cavities or prostheses; Saliva removers; Dental appliances for receiving spittle
- A61C17/16—Power-driven cleaning or polishing devices
- A61C17/22—Power-driven cleaning or polishing devices with brushes, cushions, cups, or the like
- A61C17/32—Power-driven cleaning or polishing devices with brushes, cushions, cups, or the like reciprocating or oscillating
- A61C17/34—Power-driven cleaning or polishing devices with brushes, cushions, cups, or the like reciprocating or oscillating driven by electric motor
- A61C17/3409—Power-driven cleaning or polishing devices with brushes, cushions, cups, or the like reciprocating or oscillating driven by electric motor characterized by the movement of the brush body
- A61C17/3436—Rotation around the axis perpendicular to the plane defined by the bristle holder
Definitions
- the present invention relates to hand held cleaning apparatus having a reciprocating or rotating brush head.
- Household cleaning is a never ending business. Although there are numerous types of sponges and brushes that are specially designed to clean large, open surface areas such as countertops, sinks, and bathtubs, there are fewer resources available for cleaning the difficult cracks, corners, and other hard to reach areas that are ubiquitous in a home. Although conventional sponges and brushes can certainly be used for cleaning corners and other hard to reach areas, the configuration and large size of such conventional cleaners makes them difficult to access such areas. The user is often required to apply extensive force by the ends or tips of the fingers so as to force the cleaner into the crack or corner to be cleaned. Such cleaning is tiring and often results in cramping of the hand and/or fingers.
- toothbrushes are often used to clean such hard to reach areas.
- the problem with toothbrushes is that because they are specifically designed for cleaning teeth around sensitive gums, toothbrushes are typically too soft and do not have a good angle for any extended, aggressive scrubbing of hard surfaces.
- any significant scrubbing using a toothbrush again produces fatigue and cramping of the hand.
- FIG. 1 is a an elevated side view of one embodiment of the inventive cleaning apparatus
- FIG. 2 is a top plan view of the cleaning apparatus shown in FIG. 1 ;
- FIG. 3 is an elevated front end view of the cleaning apparatus shown in FIG. 1 ;
- FIG. 4 is an elevated front view of the front face of the brush head shown in FIG. 3 ;
- FIG. 5 is an exploded view of the cleaning apparatus shown in FIG. 1 ;
- FIG. 6 is a cross sectional side view of the cleaning apparatus shown in FIG. 1 ;
- FIG. 7 is a perspective view of a subassembly of the cleaning apparatus shown in FIG. 1 showing a drive shaft coupled with a hub and brush head;
- FIG. 8 is an enlarged perspective view of the drive shaft shown in FIG. 7 ;
- FIG. 9A is an enlarged perspective view of the hub shown in FIG. 7 ;
- FIG. 9B is an enlarged perspective view of an alternative embodiment of the hub shown in FIG. 9A ;
- FIG. 10 is an enlarge perspective view of the coupled parts shown in FIG. 7 ;
- FIG. 11 is a perspective view of an alternative embodiment of a cleaning apparatus
- FIGS. 12A and 12B are exploded views of the cleaning apparatus shown in FIG. 11 ;
- FIG. 13 is a cross sectional side view of the cleaning apparatus shown in FIG. 11 ;
- FIG. 14A is an enlarged cross sectional side view of the button switch assembly shown in FIG. 13 in an off position
- FIG. 14B is an enlarged cross sectional side view of the button switch assembly shown in FIG. 14A in a momentary position
- FIG. 14C is an enlarged cross sectional side view of the button switch assembly shown in FIG. 14A in a on position;
- FIG. 15 is an enlarged perspective view of the hub shown in FIG. 12A ;
- FIG. 16 is an elevated side view of an alternative embodiment of a cleaning apparatus having a brush head the pivots;
- FIG. 17 is an exploded view of the hinge of the cleaning apparatus shown in FIG. 16 ;
- FIGS. 18A and 18B are cross sectional side views of the head assembly shown in FIG. 16 in two different pivoted positions;
- FIG. 19 is a perspective view of an alternative embodiment of a brush having a conical tip
- FIGS. 20A and 20B are cross sectional side views of an alternative embodiment of a head assembly wherein the brush head is configured to continuously rotate;
- FIG. 21A is an exploded perspective view of the universal joint shown in FIG. 20A ;
- FIG. 21B is a perspective view of the universal joint shown in FIG. 21A ;
- FIG. 22 is a cross sectional side view of an alternative embodiment of a cleaning apparatus having a light source mounted to the body assembly.
- FIG. 23 is a cross sectional side view of an alternative embodiment of a cleaning apparatus having a light source mounted to the head assembly.
- the present invention relates cleaning apparatus having a reciprocating or rotating brush head.
- the cleaning apparatus is generally designed for domestic use in cleaning small, hard to reach areas such as cracks, corners, grooves and crevices.
- the cleaning apparatus can be used for cleaning corners and around faucets on counter tops and in showers. It can also be used for spot scrubbing materials such as fabric and carpets. It is appreciated, however, that the apparatus can be used for cleaning any type of surface in commercial, residential, or any other application.
- the cleaning apparatus is not designed for use as a toothbrush.
- Cleaning apparatus 4 generally comprises a body assembly 5 having a removable head assembly 6 .
- Head assembly 6 includes a head housing 7 having an upper head housing 22 which mates with a lower head housing 24 .
- Each of head housings 22 and 24 extend between a proximal end 32 and an opposing distal end 34 .
- Head assembly 6 further includes a rotatable brush head 14 having a brush 16 mounted thereon.
- brush head 14 comprises an annular carrier plate 122 having a top surface 124 and an opposing bottom surface 125 .
- a plurality of tufting holes 170 are formed on bottom surface 125 .
- tufting holes 170 are circular and each have a diameter in a range between about 1 mm to about 4 mm with about 2 mm to about 3 mm being more common. Tufting holes 170 are shown disposed in concentric rings. Alternatively, tufting holes 170 can also be randomly disposed or be in other patterns.
- tufting holes 170 from an outer ring 172 , a middle ring 174 , an inner ring 176 and a center tufting hole 178 .
- a tuft 180 disposed within each tufting hole 170 is a tuft 180 which is comprised of a plurality of bristles 182 .
- the combined tufts 180 form brush 16 .
- Bristles 182 can be made of a variety of different materials having different lengths and diameters. By adjusting the properties of the bristles 182 , brush 16 can be formed having different stiffnesses to better suite different uses. In general, bristles having shorter length and increased diameter have increased stiffness.
- Bristles 182 can be made from a variety of different natural or synthetic materials.
- bristles 182 are comprised of a polymer material such as nylon.
- bristles 182 can be comprised of a metal such as brass, stainless steel, or copper.
- each bristle has an exposed length L which is typically in a range between about 0.3 cm to about 2.5 cm with about 1 cm to about 2 cm being more common.
- the depicted brush 16 has a substantially cylindrical configuration with a maximum diameter D that is typically in a range between about 1 cm to about 5 cm, with about 1 cm to about 3 cm being common, and about 1.5 cm to about 2.5 cm being more common. Larger brushes may have a diameter in a range from about 3 cm to about 5 cm.
- brush 16 can have any desired configuration and can have any desired dimensions, including longer lengths and diameters, so as to function for a particular purpose.
- head assembly 6 is removable from body assembly 5 , it is appreciated that a variety of different head assemblies 6 can be made, each having a brush 16 of different configuration and/or properties.
- head assembly 6 can be formed each having a brush 16 with soft bristles, medium bristles, stiff bristles or combinations thereof.
- the soft bristles are comprised of a polymeric material having a diameter in a range between about 0.15 mm to about 0.25 mm with about 0.18 mm to about 0.23 mm being more common.
- Medium polymeric bristles typically have a diameter in a range between about 0.30 mm to about 0.48 mm with about 0.37 mm to about 0.42 mm being more common.
- polymeric stiff bristles typically have a diameter in a range between about 0.48 mm to about 0.75 mm with about 0.52 mm to about 0.58 mm being more common.
- bristles on tooth brushes typically have a diameter less than 0.15 mm so that the bristles are not so stiff as to damage the gums or enamel of the teeth.
- tufting holes 170 in outer ring 172 , middle ring 174 , and inner ring 176 are filled with medium bristles while center tufting hole 178 is filled with stiff bristles forming a stopping tuft.
- the bristles in the stopping tuft are shorter than the other bristles.
- the stiffness of the stopping tuft helps limit the collapse of the other tufts as the brush is pressed against the surface to be cleaned. This helps to ensure that the tips of the bristles, as opposed to the sides, are primarily used for scrubbing. Bristles having different properties can also be defined by relative percentages.
- the bristles of the cleaning tufts can have a length that is at least 20% longer or at least 30% longer than the bristles of the stopping tuft and a diameter that is at least 30% smaller or at least 40% smaller than the bristles of the stopping tuft.
- brush 16 can comprise a group of central tufts 8 which are surrounded by outer perimeter tufts 9 .
- the outer perimeter tufts 9 are slightly longer and softer than central tufts 8 .
- light contact by brush 16 produces soft scrubbing by outer perimeter tufts 9 while harder biasing of brush 16 causes central tufts 8 to engage the surface, thereby producing harder scrubbing.
- all the tufts/bristles can be the same length, diameter, or stiffness or any combination of lengths, diameters and stiffness can be used.
- Body assembly 5 includes a body housing 12 having a substantially cylindrical configuration.
- Body housing 12 can have a circular, elliptical or any other desired transverse cross section and is sized to comfortably fit within the hand of a user.
- body housing 12 has a maximum diameter in a range between about 2.5 cm to about 4.5 cm. Other dimensions can also be used.
- Body housing 12 comprises an upper body housing 18 which mates with a lower body housing 20 .
- Each of body housings 18 and 20 also extend from a proximal end 26 to an opposing distal end 28 .
- Upper body housing 18 has an aperture 21 in which a flexible button 23 is mounted (see FIG. 5 ).
- Removably mounted to proximal end 26 of body housing 12 is an end cap 30 .
- button 23 is positioned on one side of cleaning apparatus 4 while brush 16 projects from the other side of cleaning apparatus 4 .
- This configuration enables the user to easily activate button 23 during using of cleaning apparatus 4 .
- the force used to press down on button 23 such as with the thumb of the user, can also be used for pressing the brush against the surface to be cleaned.
- Housing 36 has a substantially cylindrical configuration with a length extending between proximal end 32 and end cap 30 that is typically in a range between about 15 cm to about 35 cm with about 20 cm to about 30 cm being more common. Other dimensions can also be used. In alternative embodiments housing 36 can have a variety of other configurations. Although housing 36 may not be completely symmetrical along its entire length, housing 36 has a substantially central longitudinal axis 38 extending therethrough.
- body housing 12 bounds a battery compartment 40 , a motor compartment 42 , and a shaft compartment 43 .
- a partition 44 is formed between compartment 40 and 42 while a partition 46 is formed between compartment 42 and 43 .
- Battery compartment 40 is accessed through an opening 48 formed at proximal end 26 of body housing 12 . Opening 48 is selectively closed by end cap 30 .
- An annular seal ring 50 forms a liquid tight seal between body housing 12 and end cap 30 .
- cleaning apparatus 10 further includes a motor assembly 58 .
- Motor assembly 58 comprises a motor 60 having a proximal end 62 and an opposing distal end 64 that is mounted within motor compartment 42 . Projecting from distal end 64 of motor 60 into shaft compartment 43 is a drive shaft 66 terminating at a first coupling 68 .
- First coupling 68 terminates at an end face 70 .
- End face 70 comprises a pair of sloping surfaces 72 that are connected by stepped shoulders 74 .
- An annular shaft seal 76 encircles first coupling 68 and forms a liquid tight seal between first coupling 68 and body housing 12 .
- Battery compartment 40 is configured to receive a plurality of batteries.
- battery compartment 40 is configured to receive four batteries 78 of a size AA. Other sizes and numbers of batteries can also be used in alternative embodiments.
- the positive end of batteries 78 bias against a first contact plate 80 which is in electrical communication with motor 60 .
- the negative end of batteries 78 bias against a second contact plate 82 which is mounted within end cap 30 .
- An elongated switch 88 has a first end 90 which is in electrical communication with second contact plate 82 when end cap 30 is mounted to body housing 12 .
- Switch 88 comprises an elongated base 92 which extends along battery compartment 40 , a riser 94 which extends along partition 44 , and a flexible lever arm 96 which projects so as to be disposed between button 23 and motor 60 .
- lever 96 When button 23 is manually depressed, lever 96 is biased against motor 60 , thereby closing the circuit which is energized by batteries 78 . In turn, as the circuit is closed, the energy from batteries 78 causes motor 60 to rotatably drive drive shaft 66 . As button 23 is released, the circuit is broken and motor 60 is turned off.
- a variety of different switching mechanisms can be used so that motor 60 can be continually activated without having to continually manually depress button 23 .
- batteries 78 can be replaced with an electrical cord.
- head assembly 6 further comprises a drive shaft 100 .
- drive shaft 100 comprises an elongated shaft 102 having a proximal end 104 and an opposing distal end 106 .
- Distal end 106 terminates at a distal end face 108 .
- Radially encircling and outwardly projecting from shaft 102 at distal end 106 is an annular flange 109 .
- a bearing or bushing 162 ( FIG. 7 ) is mounted on shaft 102 so as to bias against flange 109 .
- Mounted at proximal end 104 of shaft 102 is a second coupling 110 having an end face 112 that is complementary to end face 70 of first coupling 68 . That is, second coupling 110 is configured to mesh with first coupling 68 so that stepped shoulders 74 bias against one another.
- rotation of drive shaft 66 by motor 60 is transferred through couplings 68 and 110 to cause rotation of shaft 102 .
- shaft 102 Extending from end face 108 at distal end 107 of shaft 102 is a stem 114 .
- a rounded head 116 is spherical or substantially spherical.
- head 116 is spherical or substantially spherical.
- shaft 102 has a rotational axis and central longitudinal axis 118 , which in the depicted embodiment are the same, and stem 114 has a central longitudinal axis 120 .
- Stem 114 is eccentrically mounted on end face 108 of shaft 102 so that central longitudinal axis 120 of stem 114 is offset from central longitudinal axis 118 of shaft 102 .
- Rotational axis 118 can also be the same axis as the rotational axis and central longitudinal axis of drive shaft 66 and can also be the same as central longitudinal axis 38 of housing 36 ( FIG. 1 ).
- brush head 14 comprises annular carrier plate 122 , as previously discussed, having top surface 124 .
- Spindle 126 comprises a central axle 128 having an arm 130 projecting from each side thereof.
- a rotational axis 127 about which brush 16 and brush head 14 rotate, extends through spindle 126 .
- Rotational axis 127 can also be the central axis for brush 16 and brush head 14 .
- Mounted on spindle 126 is a hub 132 .
- hub 132 has opposing side surfaces 136 and 138 which extend between a top surface 140 and an opposing bottom surface 142 .
- Hub 132 also includes a front face 144 and an opposing back face 146 .
- a passage 148 extends from top surface 140 to bottom surface 142 .
- a side channel 150 extends through side surfaces 136 and 138 adjacent to bottom surface 142 so as to intersect with passage 148 .
- hub 132 is received over spindle 126 so that axle 128 extends through passage 148 and arms 130 are received within side channel 150 .
- a bearing or bushing 151 ( FIG. 5 ) is mounted on axle 128 at top surface 140 of hub 132 .
- hub 132 is engaged with spindle 126 such that rotation of hub 132 facilitates rotation of spindle 126 and thus the remainder of brush head 14 .
- hub 132 can be integrally formed with brush head 14 .
- Hub 132 further comprises a channel 152 formed on front face 144 and extending to top surface 140 .
- Channel 152 is vertically aligned with passage 148 and is bounded by a first engagement surface 156 , a spaced apart second engagement surface 158 , and an inside face 159 extending therebetween.
- Engagement surfaces 156 and 158 are opposingly facing and are in substantially parallel alignment.
- Recessed along each engagement surface 156 and 158 is a locking channel 160 .
- Each locking channel 160 is elongated and is slightly arched along the length thereof. The distance between engagement surfaces 156 and 158 of hub 132 is smaller than the diameter of rounded head 116 .
- hub 132 is configured so that head 116 can be snap-fit between engagement surfaces 156 and 158 so that head 116 is resiliently captured within locking channels 160 formed on engagement surfaces 156 and 158 . In this configuration, head 116 is resiliently biased between faces 156
- locking channels 160 can be eliminated so that engagement surfaces 156 and 158 are substantially flat.
- head 116 can be sized to snugly or loosely fit between engagement surfaces 156 and 158 .
- head housing 7 is enclosed over drive shaft 100 and hub 132 so that head housing 7 rides against bearings 151 and 162 .
- Bayonet slots 164 are formed on distal end 28 of body housing 12 while bayonet prongs 166 project from proximal end 32 of head housing 7 .
- head assembly 6 can be removably connected to body assembly 5 using the bayonet connection ( FIG. 1 ).
- couplings 68 and 110 are mated. Accordingly, as button 23 is depressed, motor 60 is energized causing drive shaft 66 and drive shaft 100 to each rotate about their rotational or central longitudinal axis. In turn, because stem 114 and rounded head 116 are mounted eccentrically on shaft 102 , head 116 rotates in a circle. That is, as shaft 102 spins or rotates, head 116 begins to rotate in an enlarged circle so as to bias against engagement surface 158 of hub 132 causing hub 132 with connected brush head 14 and brush 16 to rotate in a first direction about axle 128 . The length and arch of locking channels 160 allows for free rotation of head 116 within locking channels 160 .
- head 116 Once head 116 has moved to its furthest extent in one direction, head 116 then begins to bias against the opposing engagement surface 156 causing hub 132 , with connected brush head 14 and brush 16 , to rotate in the opposing direction about axle 128 . As such, rapid rotation of drive shaft 100 with head 116 causes hub 132 with connected brush head 14 and brush 16 to rapidly reciprocate.
- a snug engagement can be formed between hub 132 and head 116 . This snug fit optimizes the transfer of movement between drive rod 100 and hub 132 . That is, the snug fit eliminates slop between hub 132 and drive rod 100 even after head 116 has begun to wear within locking channels 160 .
- brush 16 can be biased against a surface for cleaning. It is noted that brush 16 is positioned at an orientation relative housing 36 so as to optimize convenience and use.
- brush 16 projects relative to the central longitudinal axis of body assembly 5 or head assembly 6 so as to form a set inside angle ⁇ therewith typically in a range between about 90° to about 180° with about 110° to about 140° being more common. Other angles can also be used.
- rotational axis 127 of brush head 14 or brush 16 intersects with rotational axis 38 of the drive shaft or of central longitudinal axis 118 of housing 36 so as to form the set inside angle ⁇ as discussed above.
- locking channels 160 need not merely be recessed within inner side walls 156 and 158 but can completely extend through hub 132 .
- head 116 it is not necessary that head 116 be spherical. In alternative embodiments, it is appreciated that head 116 can be elliptical or have a variety of other configurations that mate with complementary locking channels.
- FIG. 11 Depicted in FIG. 11 is an alternative embodiment of a cleaning apparatus 200 incorporating features of the present invention. Like elements between cleaning apparatus 10 and 200 are identified by like reference characters.
- Cleaning apparatus comprises a head assembly 202 and a body assembly 204 .
- body assembly 204 comprises a body housing 206 which is molded as a tubular member.
- Body housing 206 comprises a handle portion 208 having a proximal end 210 and an opposing distal end 212 .
- Distal end 212 terminates at and end face 214 from which a tapered, tubular stem 216 projects.
- a pair of opposing bayonet slots 217 are formed along stem 216 .
- Handle portion 208 and stem 216 are typically comprised of a substantially rigid plastic such as ABS.
- An overly 218 comprised of a softer, flexible plastic such as TPE or rubber, is molded over a section of handle portion 208 . Overlay 218 allows improved gripping of cleaning apparatus 200 .
- Body housing 206 has an interior surface 220 which bounds a chamber 222 .
- Guide 224 comprises an elongated partition wall 226 having a proximal end 228 and an opposing distal end 230 .
- the sides of partition wall 228 are curved so that batteries 78 can be complementary received on each side thereof.
- a cantilevered latch 232 is formed at proximal end 238 at both the top and bottom of partition wall 226 .
- Each latch 232 terminates at a barb 234 .
- a spring 236 is positioned between partition wall 226 and each latch 232 so that each latch 232 can be selectively compressed toward partition wall 226 and, when released, each latch 232 resiliently rebounds.
- holes 235 are formed through each side of handle portion 208 at proximal end 210 .
- An engaging portion 238 of overlay 218 is molded over holes 235 .
- Guide 224 is positioned within chamber 222 to that each latch 232 is aligned with a corresponding hole 235 . A user is thus able to manually press inward on the flexible engaging portions 238 of overlay 218 so as to selectively inwardly press latches 232 .
- Latches 232 are used for securing an end cap 240 to proximal end 210 of body housing 206 .
- end cap 210 has an interior surface 242 with a pair of opposing catches 244 formed thereon.
- barbs 234 on latches 232 engage catches 244 so as to securely lock end cap 240 on body housing 206 .
- engaging portions 238 are manually depressed as discussed above so as to inwardly flex latches 232 and thus release barbs 234 from catches 244 .
- cupped support 246 is formed at distal end 230 of partition wall 226 and is used to support motor 60 .
- Motor 60 rotates an initial shaft 250 which in turn rotates a drive shaft 254 .
- Drive shaft 254 has a head 255 formed at a distal end thereof.
- Head 255 typically has a non-circular transverse cross section such that it can engage with a coupler as discussed below in greater detail.
- head 255 comprises a flattened portion of drive shaft 254 .
- head 255 can have any number of different polygonal or non-circular transverse cross sections.
- a conventional gear assembly 252 extends between initial shaft 250 and drive shaft 254 so that the torque produced by drive shaft 254 is adjusted relative to the torque produced by initial shaft 250 by a ratio in a range between about 1.5:1 to about 3.5:1.
- Increasing the torque capacity of drive shaft 254 enable brush 16 to continue to reciprocate or rotate even when substantial bearing force is applied to brush 16 while scrubbing. This is contrary to many conventional electric toothbrushes where it is desired that the brush stop moving or significantly slow when too much force is applied so that the toothbrush does not damage the gums.
- the four batteries 78 are disposed in parallel.
- the negative end of the back two batteries 78 bias against a corresponding spring 256 which are each in electrical communication with a transfer spring 258 .
- the springs are mounted on a plate 255 which is secured within end cap 240 .
- Transfer spring 258 biases against a contact 260 .
- An electrical lead 262 extends from contact 260 to motor 60 .
- the positive end of the front two batteries 78 bias against a correspond contact 264 which are each in electrical communication with a flexible switch 266 .
- Switch 266 is positioned above motor 60 such that when switch 266 is biased against motor 60 , the circuit is complete and motor 60 is energized.
- batteries 78 can be positioned in series rather then parallel.
- springs 256 are in electrical communication with each other but transfer spring 256 , contact 260 , and lead 262 are eliminated.
- the two contacts 264 are separated from each other. One of contacts 264 is in direct electrical communication with motor 60 while the other contact 264 remains connected with switch 266 . Placing batteries 78 in series increases the voltage to provide more power to the motor.
- an opening 270 is formed on a top surface body housing 206 so as to communicate with chamber 222 . Opening 270 is aligned with motor 60 and switch 266 . Secured within opening 270 is a flexible diaphragm 272 . Diaphragm 272 has a top surface 274 and an opposing bottom surface 276 . A projection 278 is formed on top surface 274 . A cover plate 280 has an elongated hole 282 extending therethrough and is secured over opening 270 so that hole 282 is aligned with projection 278 . A button 284 is slidably mounted to cover plate 280 by a catch 286 and a retainer 288 .
- button 284 comprises a generally cup-shaped body 290 having an interior surface 292 with a stem 294 projecting therefrom.
- Button 284 is comprised of a resiliently flexible material which is typically a natural or synthetic rubber.
- Retainer 288 comprises a substantially circular frame 296 having an opening 298 extending therethrough. Opening 298 is at least partially bounded by a lip 300 .
- Retainer 288 is comprised of a substantially rigid material or at least a material that is more rigid than the material used for button 284 .
- Button 284 is secured to retainer 288 so that stem 294 passes through opening 298 .
- button 284 is secured to retainer 288 by being molded directly onto retainer 288 during the formation of button 284 , i.e., overlay molding process.
- Catch 286 ( FIG. 14B ) comprises a base 302 having an opening 304 extending therethrough. A pair of barbed prongs 306 upwardly project from a top surface of base 302 on opposing sides of opening 304 . Catch 286 is used to secure button 284 on cover plate 280 . Specifically, button 284 and retainer 288 are positioned on the top surface of cover plate 280 so that stem 294 is aligned with opening 282 of cover plate 280 . Prongs 306 of catch 286 are then pushed up through opening 282 of cover plate 280 from the bottom surface thereof so that prongs engage with lip 300 of retainer 288 by a snap fit connection.
- button 284 can selectively side on cover plate 280 between an off position as shown in FIG. 14A and an on position as shown in FIG. 14C .
- projection 278 of diaphragm 272 is disposed between stem 294 of button 284 and switch 266 and is at least partially disposed within opening 304 of catch 286 .
- switch 266 is spaced apart from motor 60 so that no electrical contact is made. From the off position, there are two ways in which a user can energize motor 60 . In one approach, as depicted in FIG. 14B , a user can simply press down on the center of button 284 .
- stem 294 is pressed down against projection 278 which in turn pushes down switch 266 so that switch 266 contacts motor 60 , thereby energizing motor 60 .
- button 284 resiliently returns to the off position.
- buttons 284 In the second approach as depicted in FIG. 14C , the user manually slides button 284 along cover plate 280 . In so doing, base 302 of catch 286 rides over projection 278 which pushes projection 278 downward again causing switch 266 to contact motor 60 , thereby energizing motor 60 . Motor 60 remains energized until button 284 is again moved back to the off position.
- the button assembly thus enables a single, integral button to activate the motor in two different modes of operation.
- head assembly 202 comprises a head housing 201 which includes upper head housing 22 and lower head housing 24 each having proximal end 32 and opposing distal end 34 .
- Head housing 201 bounds a channel 316 extending along the length thereof which is at least partially divided by complementary partition walls 317 formed on housing 22 and 24 .
- Engagement ring 312 Secured between housing 22 and 24 at proximal end 32 is an engagement ring 312 .
- Engagement ring 312 has opposing bayonet prong 318 formed on an interior surface thereof.
- Head assembly 202 is removably secured to body assembly 204 by inserting stem 216 of body housing 206 within proximal end 32 of head assembly 202 so that bayonet prongs 318 are received within bayonet slots 217 and then rotating head assembly 202 relative to body assembly 204 .
- Head assembly 202 comprises a drive shaft 320 having a proximal end 322 and an opposing distal end 324 .
- Proximal end 322 has a coupler 326 secured thereto.
- Coupler 326 has a socket 328 formed on the free end thereof that is designed to removably engage with head 255 on drive shaft 254 extending from motor 60 .
- socket 328 has a configuration complementary to head 255 such that when head 255 is received within socket 328 , rotation of drive shaft 254 causes rotation of drive shaft 320 .
- Head 255 is removably received within socket 328 when head assembly 202 is removably coupled with body assembly 204 as discussed above.
- disk 330 is secured to distal end 324 of drive shaft 320 .
- disk 330 has a substantially cylindrical configuration that includes a proximal end face 332 and an opposing distal end face 334 .
- Distal end 324 of drive shaft 320 is centrally secured to proximal end face 332 .
- stem 114 and rounded head 116 are mounted on distal end face 334 at a location spaced radially outward from the rotational axis of drive shaft 320 . That is, stem 114 is eccentrically mounted on end face 334 in the same manner as discussed above with regard to cleaning apparatus 4 .
- drive shaft 320 can have the same diameter as disk 330 or disk 330 can be eliminated and an arm formed between drive shaft 330 and stem 114 .
- Other conventional techniques can also be used to eccentrically position rounded head 116 .
- a cylindrical bushing 336 encircles drive shaft 320 toward distal end 324 and is supported within supports 338 formed on the interior surface of head housing 201 .
- cleaning apparatus 200 includes brush head 14 .
- Brush head 14 comprises carrier plate 122 having bottom surface 125 with brush 16 comprised of bristles formed thereon. Plate 122 also has top surface 124 with spindle 126 and arms 130 projecting therefrom.
- Axle 128 centrally projects from spindle 126 and has a rotational axis extending therethrough.
- a tubular bushing 340 is secured to upper head housing 22 and encircles axle 128 ( FIG. 13 ).
- Axle 128 and spindle 126 are received within a hub 342 with a wear plate 341 positioned between bushing 340 and spindle 126 .
- hub 342 comprises a substantially cylindrical base 344 having a front face 346 , a back face 348 , and opposing side faces 350 and 351 which each extend between a top surface 352 and an opposing bottom surface 354 .
- a passage 356 centrally extends through base 344 from top surface 352 to bottom surface 354 .
- a side channel 358 extends through side surfaces 350 and 351 adjacent to bottom surface 354 so as to intersect with passage 356 .
- Side channel 358 is configured so that when spindle 126 is received within passage 356 , arms 130 are received within side channel 358 so that hub 342 is interlocked with brush head 14 .
- Wear plate 341 also has tabs projecting from the side thereof which are received within side channel 358 of hub 342 so that wear plate 341 is secured to hub 342 .
- wear plate 341 prevents bushing 340 from producing undue wear on spindle 126 .
- Guide 360 Projecting from back face 348 of base 344 is a guide 360 .
- Guide 360 comprises a first side wall 362 , a complementary spaced apart second side wall 364 , and a back wall 366 extending therebetween.
- Guide 360 partially bounds a channel 368 that is vertically aligned with passage 356 .
- Channel 368 is bounded by a first engagement surface 370 , a spaced apart second engagement surface 372 , and an inside face 374 extending therebetween.
- Engagement surfaces 370 and 372 are opposingly facing, are substantially flat, and are in substantially parallel alignment.
- the distance between engagement surfaces 370 and 372 of hub 342 is substantially equal to the diameter of rounded head 116 .
- rounded head 116 is received within channel 368 .
- rounded head 116 As rounded head 116 is continuously rotated about the rotational axis of drive shaft 320 due to the rotation of drive shaft 254 , rounded head 116 alternatingly pushes against opposing engagement surfaces 370 and 372 so as to cause hub 342 , brush head 14 , and brush 16 to reciprocate in a rotational pattern about the rotation axis extending through spindle 126 .
- the rotational axis of drive shaft 320 intersects with the rotational axis of brush head 14 so as to form an inside angle ⁇ that is typically greater than 95° and is more commonly in a range between about 110° to about 140°.
- rounded head 116 travels in its circular pattern, rounded head 116 travels longitudinally along the length of side walls 362 and 364 .
- rounded head 116 is disposed farther away from the rotational axis of brush head 14 when rounded head 166 is disposed at the bottom of side walls 362 and 364 and is closer to the rotational axis of brush head 14 when rounded head 166 is disposed at the top of side walls 362 and 364 . Accordingly, to ensure that rounded head 166 is retained within channel 368 during its circular movement, side walls 362 and 364 are wider at the bottom than at the top.
- rounded head 116 has a substantially spherical configuration. This design has a number of benefits. For example, in part because of the above discussed angular orientation of brush head 14 , rounded head 116 contacts engagement surfaces 370 and 372 along a number of different points on rounded head 116 that are longitudinally spaced proximal to distal and top to bottom. By making rounded head 116 spherical, this helps to ensure continued minimal contact between rounded head 116 and engagement surfaces 370 and 372 so as to minimize wear.
- bush 16 has a fixed orientation relative to body assembly 204 .
- a cleaning apparatus 386 is provided having a head assembly 388 wherein brush 16 can be pivoted along arrow 390 so as to selectively adjust the orientation of brush 16 relative body assembly 204 .
- head assembly 202 and head assembly 388 are identified by like reference characters.
- Head assembly 388 comprises a proximal head housing 392 , a distal head housing 394 , and a hinge 396 pivotally connecting housing 392 and 394 together.
- proximal housing 392 has a distal end 398 .
- An opening 399 is formed at distal end 398 through which drive shaft 320 extends ( FIG. 18A ).
- Hinge 396 comprises a pair of rounded prongs 400 A and 400 B projecting on each side of opening 399 .
- Hinge 396 comprises two identical halves with the components for the two halves identified by the suffixes A and B. Only one of the halves will be described in detail herein with the understanding that the other half is identical thereto.
- Projecting from an outside face of prong 400 A is a circular ring 402 A.
- a pair of opposing notches 404 A are formed on ring 402 A.
- Hinge 396 also comprises a pair of rounded arms 406 A and 406 B projecting from a proximal end of distal head housing 394 .
- Arm 406 A has an inside face 410 A to an outside face 412 A.
- a substantially circular recessed pocket 414 A is formed on inside face 410 A.
- Pocket 414 A has a plurality of rounded notches 416 A formed on the perimeter edge of pocket 414 A on opposing sides thereof. Each notch 416 A is separated by a ridge 417 A.
- a circular recess 408 A is formed on the floor of pocket 414 A and is sized to receive ring 402 A.
- a spring 418 A is provided and is comprised of a resilient flexible material such as metal commonly used in springs.
- Spring 418 A comprises a ring body 420 A having an exterior surface 422 A and an interior surface 424 A.
- a pair of rounded tabs 426 A project from exterior surface 422 A on opposing sides of ring body 420 A.
- a pair of rectangular tabs 428 A project from interior surface 424 A on opposing sides of ring body 420 A.
- tabs 428 A of spring 418 A are received within corresponding notches 404 A on prong 400 A so that spring 418 A is secured to prong 400 A.
- arm 406 A is positioned so that spring 418 A is received within pocket 414 A and ring 402 A is received within recess 408 A.
- Tabs 426 A are received within corresponding notches 416 A so that arm 406 A is fixed relative to prong 400 A.
- spring 418 A deflects as tabs 426 A pass over ridges 417 A and then resiliently rebounds as tabs 426 A pass into the adjacent notches 416 A.
- the resistance of the movement of distal head assembly 394 is based on the stiffness of springs 418 A and 418 B.
- brush head 14 can now rotate over an angle of 90°.
- the angle ⁇ previously discussed can be selectively adjusted from about 90° to about 180°.
- the internal components of head assembly 388 are substantially the same as the internal components of head assembly 202 .
- the shape of hub 342 has been modified slightly so that rounded head 116 is retained between sidewalls 362 and 364 as head 116 moves in the circular pattern, independent of the orientation of brush head 14 .
- brush 16 has a larger diameter than prior depicted brushes 16 and that some bristles 182 are longer than others.
- the present invention can comprise a kit having a single body assembly and a plurality of different head assemblies which can be selectively secured to the body assembly.
- Each head assembly can have a brush having a different size, configuration, and/or physical properties, such as stiffness of bristles.
- FIG. 19 depicted in FIG. 19 is a brush 16 having a conical tip 434 for better reaching and scrubbing the inside of corners.
- head assemblies are designed so that the brushes rotate in a reciprocating manner.
- the head assembly can be designed so that the brush rotates in a continuous circular manner.
- FIG. 20A depicted in FIG. 20A is a head assembly 436 .
- Head assembly 436 comprises proximal head housing 392 , distal head housing 394 and hinge 396 .
- a brush head 438 has a first side with brush 16 projecting therefrom and an opposing second side with a spindle 440 projecting therefrom.
- Spindle 440 is coupled with a universal joint 441 .
- a drive shaft 442 is disposed within proximal housing 392 .
- Drive shaft 442 has coupler 326 mounted on a proximal end thereof and universal joint 441 mounted on a distal end thereof.
- universal joint 441 comprises a cup 444 and a ball 446 .
- Spindle 440 projects from one side of cup 444 while a rounded socket 448 is formed on the opposing side of cup 444 .
- Socket 448 is bounded by an interior surface 450 from which a pair of opposingly, spaced apart, rounded projections 452 extend adjacent to the mouth of socket 448 .
- Ball 446 is rounded and is adapted to fit within socket 448 .
- An elongated, rounded slot 454 is recessed on each opposing side of ball 446 . Slots 454 are configured so that when ball 446 is received within socket 448 , projections 452 are received within corresponding slots 454 .
- slots 454 can be combined to form one long slot. In this assembled configuration, continuous rotation of drive shaft 442 causes rotation of ball 446 , which, due to the engagement between projections 452 and slots 454 , causes continuous rotation of cup 444 , spindle 440 , brush head 438 and brush 16 .
- slots 454 are elongated, ball 446 can rotate within socket 448 by projections 452 sliding longitudinally within elongated slots 454 .
- spindle 440 is free to pivot relative to drive shaft 442 , thereby enabling distal head assembly 394 to pivot relative to proximal head assembly 392 as a results of hinge 396 as discussed above.
- FIG. 22 Depicted in FIG. 22 is an alternative embodiment of cleaning apparatus 200 .
- a light source 460 such as a light emitting diode (LED) is mounted on the bottom side of body assembly 204 toward the distal end thereof.
- Light source 460 is oriented so as to direct light toward brush 16 so as to increase visibility of the cleaning surface during use.
- Leads 462 extend from light source 460 to motor 60 such that when motor 60 is energized, light source 460 is also energized.
- a second button switch can also be provided for light source 460 .
- FIG. 23 Depicted in FIG. 23 is another alternative embodiment of cleaning apparatus 200 .
- light source 460 is mounted on the bottom surface of head assembly 202 so as to direct light toward brush 16 .
- leads 462 extend between light source 460 and motor 60 .
- contacts 464 are formed at the connection between head assembly 202 and body assembly 204 .
Abstract
Description
- This application claims priority to U.S. Provisional Application Ser. No. 60/534,010, filed Jan. 2, 2004, and is a continuation-in-part of U.S. Design patent application Ser. No. 29/217,231, filed Nov. 15, 2004 which applications are incorporated herein by specific reference.
- 1. The Field of the Invention
- The present invention relates to hand held cleaning apparatus having a reciprocating or rotating brush head.
- 2. The Relevant Technology
- Household cleaning is a never ending business. Although there are numerous types of sponges and brushes that are specially designed to clean large, open surface areas such as countertops, sinks, and bathtubs, there are fewer resources available for cleaning the difficult cracks, corners, and other hard to reach areas that are ubiquitous in a home. Although conventional sponges and brushes can certainly be used for cleaning corners and other hard to reach areas, the configuration and large size of such conventional cleaners makes them difficult to access such areas. The user is often required to apply extensive force by the ends or tips of the fingers so as to force the cleaner into the crack or corner to be cleaned. Such cleaning is tiring and often results in cramping of the hand and/or fingers.
- This problem is compounded by the fact that corners and cracks are typically where dirt, mold, soap scum, and other undesirables tend to grow or build-up. As such, extra energy or force is often necessary to clean such locations.
- Conventional toothbrushes are often used to clean such hard to reach areas. The problem with toothbrushes, however, is that because they are specifically designed for cleaning teeth around sensitive gums, toothbrushes are typically too soft and do not have a good angle for any extended, aggressive scrubbing of hard surfaces. Furthermore, because of the small handles on toothbrushes, any significant scrubbing using a toothbrush again produces fatigue and cramping of the hand.
- Accordingly, what is needed are improved cleaning apparatus which can be used for cleaning small, hard to reach areas, which can be used for durable, extended scrubbing, and which can be used with minimal fatigue.
- Various embodiments of the present invention will now be discussed with reference to the appended drawings. It is appreciated that these drawings depict only typical embodiments of the invention and are therefore not to be considered limiting of its scope.
-
FIG. 1 is a an elevated side view of one embodiment of the inventive cleaning apparatus; -
FIG. 2 is a top plan view of the cleaning apparatus shown inFIG. 1 ; -
FIG. 3 is an elevated front end view of the cleaning apparatus shown inFIG. 1 ; -
FIG. 4 is an elevated front view of the front face of the brush head shown inFIG. 3 ; -
FIG. 5 is an exploded view of the cleaning apparatus shown inFIG. 1 ; -
FIG. 6 is a cross sectional side view of the cleaning apparatus shown inFIG. 1 ; -
FIG. 7 is a perspective view of a subassembly of the cleaning apparatus shown inFIG. 1 showing a drive shaft coupled with a hub and brush head; -
FIG. 8 is an enlarged perspective view of the drive shaft shown inFIG. 7 ; -
FIG. 9A is an enlarged perspective view of the hub shown inFIG. 7 ; -
FIG. 9B is an enlarged perspective view of an alternative embodiment of the hub shown inFIG. 9A ; -
FIG. 10 is an enlarge perspective view of the coupled parts shown inFIG. 7 ; -
FIG. 11 is a perspective view of an alternative embodiment of a cleaning apparatus; -
FIGS. 12A and 12B are exploded views of the cleaning apparatus shown inFIG. 11 ; -
FIG. 13 is a cross sectional side view of the cleaning apparatus shown inFIG. 11 ; -
FIG. 14A is an enlarged cross sectional side view of the button switch assembly shown inFIG. 13 in an off position; -
FIG. 14B is an enlarged cross sectional side view of the button switch assembly shown inFIG. 14A in a momentary position; -
FIG. 14C is an enlarged cross sectional side view of the button switch assembly shown inFIG. 14A in a on position; -
FIG. 15 is an enlarged perspective view of the hub shown inFIG. 12A ; -
FIG. 16 is an elevated side view of an alternative embodiment of a cleaning apparatus having a brush head the pivots; -
FIG. 17 is an exploded view of the hinge of the cleaning apparatus shown inFIG. 16 ; -
FIGS. 18A and 18B are cross sectional side views of the head assembly shown inFIG. 16 in two different pivoted positions; -
FIG. 19 is a perspective view of an alternative embodiment of a brush having a conical tip; -
FIGS. 20A and 20B are cross sectional side views of an alternative embodiment of a head assembly wherein the brush head is configured to continuously rotate; -
FIG. 21A is an exploded perspective view of the universal joint shown inFIG. 20A ; -
FIG. 21B is a perspective view of the universal joint shown inFIG. 21A ; -
FIG. 22 is a cross sectional side view of an alternative embodiment of a cleaning apparatus having a light source mounted to the body assembly; and -
FIG. 23 is a cross sectional side view of an alternative embodiment of a cleaning apparatus having a light source mounted to the head assembly. - The present invention relates cleaning apparatus having a reciprocating or rotating brush head. The cleaning apparatus is generally designed for domestic use in cleaning small, hard to reach areas such as cracks, corners, grooves and crevices. For example, the cleaning apparatus can be used for cleaning corners and around faucets on counter tops and in showers. It can also be used for spot scrubbing materials such as fabric and carpets. It is appreciated, however, that the apparatus can be used for cleaning any type of surface in commercial, residential, or any other application. The cleaning apparatus, however, is not designed for use as a toothbrush.
- Depicted in
FIGS. 1-3 is one embodiment of a cleaning apparatus 4 incorporating features of the present invention. Cleaning apparatus 4 generally comprises abody assembly 5 having aremovable head assembly 6.Head assembly 6 includes ahead housing 7 having anupper head housing 22 which mates with alower head housing 24. Each ofhead housings proximal end 32 and an opposingdistal end 34. -
Head assembly 6 further includes arotatable brush head 14 having abrush 16 mounted thereon. As will be discussed below in greater detail,brush head 14 comprises anannular carrier plate 122 having atop surface 124 and an opposingbottom surface 125. Depicted inFIG. 4 , a plurality of tuftingholes 170 are formed onbottom surface 125. In one embodiment tufting holes 170 are circular and each have a diameter in a range between about 1 mm to about 4 mm with about 2 mm to about 3 mm being more common. Tufting holes 170 are shown disposed in concentric rings. Alternatively, tuftingholes 170 can also be randomly disposed or be in other patterns. - In the embodiment depicted, tufting holes 170 from an
outer ring 172, amiddle ring 174, aninner ring 176 and acenter tufting hole 178. As seen inFIG. 3 , disposed within eachtufting hole 170 is atuft 180 which is comprised of a plurality ofbristles 182. The combinedtufts 180form brush 16.Bristles 182 can be made of a variety of different materials having different lengths and diameters. By adjusting the properties of thebristles 182,brush 16 can be formed having different stiffnesses to better suite different uses. In general, bristles having shorter length and increased diameter have increased stiffness. -
Bristles 182 can be made from a variety of different natural or synthetic materials. In one embodiment, bristles 182 are comprised of a polymer material such as nylon. In other embodiments, such as for use in cleaning a barbeque grill, bristles 182 can be comprised of a metal such as brass, stainless steel, or copper. As depicted inFIG. 1 , each bristle has an exposed length L which is typically in a range between about 0.3 cm to about 2.5 cm with about 1 cm to about 2 cm being more common. The depictedbrush 16 has a substantially cylindrical configuration with a maximum diameter D that is typically in a range between about 1 cm to about 5 cm, with about 1 cm to about 3 cm being common, and about 1.5 cm to about 2.5 cm being more common. Larger brushes may have a diameter in a range from about 3 cm to about 5 cm. In alternative embodiments,brush 16 can have any desired configuration and can have any desired dimensions, including longer lengths and diameters, so as to function for a particular purpose. - Because
head assembly 6 is removable frombody assembly 5, it is appreciated that a variety ofdifferent head assemblies 6 can be made, each having abrush 16 of different configuration and/or properties. Forexample head assembly 6 can be formed each having abrush 16 with soft bristles, medium bristles, stiff bristles or combinations thereof. In one embodiment the soft bristles are comprised of a polymeric material having a diameter in a range between about 0.15 mm to about 0.25 mm with about 0.18 mm to about 0.23 mm being more common. Medium polymeric bristles typically have a diameter in a range between about 0.30 mm to about 0.48 mm with about 0.37 mm to about 0.42 mm being more common. Finally, polymeric stiff bristles typically have a diameter in a range between about 0.48 mm to about 0.75 mm with about 0.52 mm to about 0.58 mm being more common. By way of comparison, bristles on tooth brushes typically have a diameter less than 0.15 mm so that the bristles are not so stiff as to damage the gums or enamel of the teeth. - In one embodiment having a combination of
bristles 182, tuftingholes 170 inouter ring 172,middle ring 174, and inner ring 176 (FIG. 4 ) are filled with medium bristles whilecenter tufting hole 178 is filled with stiff bristles forming a stopping tuft. The bristles in the stopping tuft are shorter than the other bristles. During use, the stiffness of the stopping tuft helps limit the collapse of the other tufts as the brush is pressed against the surface to be cleaned. This helps to ensure that the tips of the bristles, as opposed to the sides, are primarily used for scrubbing. Bristles having different properties can also be defined by relative percentages. For example, in a brush having a stopping tuft and cleaning tufts, the bristles of the cleaning tufts can have a length that is at least 20% longer or at least 30% longer than the bristles of the stopping tuft and a diameter that is at least 30% smaller or at least 40% smaller than the bristles of the stopping tuft. - Similarly, in one embodiment depicted in
FIG. 3 ,brush 16 can comprise a group ofcentral tufts 8 which are surrounded byouter perimeter tufts 9. Theouter perimeter tufts 9 are slightly longer and softer thancentral tufts 8. As such, light contact bybrush 16 produces soft scrubbing byouter perimeter tufts 9 while harder biasing ofbrush 16 causescentral tufts 8 to engage the surface, thereby producing harder scrubbing. In alternative embodiments, all the tufts/bristles can be the same length, diameter, or stiffness or any combination of lengths, diameters and stiffness can be used. -
Body assembly 5 includes abody housing 12 having a substantially cylindrical configuration.Body housing 12 can have a circular, elliptical or any other desired transverse cross section and is sized to comfortably fit within the hand of a user. In one embodiment,body housing 12 has a maximum diameter in a range between about 2.5 cm to about 4.5 cm. Other dimensions can also be used.Body housing 12 comprises anupper body housing 18 which mates with alower body housing 20. Each ofbody housings proximal end 26 to an opposingdistal end 28.Upper body housing 18 has anaperture 21 in which aflexible button 23 is mounted (seeFIG. 5 ). Removably mounted toproximal end 26 ofbody housing 12 is anend cap 30. It is noted thatbutton 23 is positioned on one side of cleaning apparatus 4 whilebrush 16 projects from the other side of cleaning apparatus 4. This configuration enables the user to easily activatebutton 23 during using of cleaning apparatus 4. Furthermore, by having this configuration, the force used to press down onbutton 23, such as with the thumb of the user, can also be used for pressing the brush against the surface to be cleaned. -
Head housing 7,body housing 12, andend cap 30 combine to form ahousing 36.Housing 36 has a substantially cylindrical configuration with a length extending betweenproximal end 32 andend cap 30 that is typically in a range between about 15 cm to about 35 cm with about 20 cm to about 30 cm being more common. Other dimensions can also be used. In alternative embodiments housing 36 can have a variety of other configurations. Althoughhousing 36 may not be completely symmetrical along its entire length,housing 36 has a substantially centrallongitudinal axis 38 extending therethrough. - As depicted in
FIG. 5 ,body housing 12 bounds abattery compartment 40, amotor compartment 42, and ashaft compartment 43. Apartition 44 is formed betweencompartment partition 46 is formed betweencompartment Battery compartment 40 is accessed through anopening 48 formed atproximal end 26 ofbody housing 12.Opening 48 is selectively closed byend cap 30. Anannular seal ring 50 forms a liquid tight seal betweenbody housing 12 andend cap 30. - As depicted in
FIGS. 5 and 6 , cleaning apparatus 10 further includes amotor assembly 58.Motor assembly 58 comprises amotor 60 having aproximal end 62 and an opposingdistal end 64 that is mounted withinmotor compartment 42. Projecting fromdistal end 64 ofmotor 60 intoshaft compartment 43 is adrive shaft 66 terminating at afirst coupling 68.First coupling 68 terminates at anend face 70.End face 70 comprises a pair of slopingsurfaces 72 that are connected by steppedshoulders 74. Anannular shaft seal 76 encirclesfirst coupling 68 and forms a liquid tight seal betweenfirst coupling 68 andbody housing 12. -
Battery compartment 40 is configured to receive a plurality of batteries. For example, in theembodiment battery compartment 40 is configured to receive fourbatteries 78 of a size AA. Other sizes and numbers of batteries can also be used in alternative embodiments. The positive end ofbatteries 78 bias against afirst contact plate 80 which is in electrical communication withmotor 60. The negative end ofbatteries 78 bias against asecond contact plate 82 which is mounted withinend cap 30. Anelongated switch 88 has afirst end 90 which is in electrical communication withsecond contact plate 82 whenend cap 30 is mounted tobody housing 12.Switch 88 comprises anelongated base 92 which extends alongbattery compartment 40, ariser 94 which extends alongpartition 44, and aflexible lever arm 96 which projects so as to be disposed betweenbutton 23 andmotor 60. Whenbutton 23 is manually depressed,lever 96 is biased againstmotor 60, thereby closing the circuit which is energized bybatteries 78. In turn, as the circuit is closed, the energy frombatteries 78 causes motor 60 to rotatably drivedrive shaft 66. Asbutton 23 is released, the circuit is broken andmotor 60 is turned off. In alternative embodiments, it is appreciated that a variety of different switching mechanisms can be used so thatmotor 60 can be continually activated without having to continually manually depressbutton 23. Furthermore, it is appreciated thatbatteries 78 can be replaced with an electrical cord. - With further reference to
FIGS. 5 and 6 ,head assembly 6 further comprises adrive shaft 100. As depicted inFIG. 8 ,drive shaft 100 comprises anelongated shaft 102 having aproximal end 104 and an opposingdistal end 106.Distal end 106 terminates at adistal end face 108. Radially encircling and outwardly projecting fromshaft 102 atdistal end 106 is anannular flange 109. A bearing or bushing 162 (FIG. 7 ) is mounted onshaft 102 so as to bias againstflange 109. Mounted atproximal end 104 ofshaft 102 is asecond coupling 110 having anend face 112 that is complementary to endface 70 offirst coupling 68. That is,second coupling 110 is configured to mesh withfirst coupling 68 so that steppedshoulders 74 bias against one another. As a result, rotation ofdrive shaft 66 bymotor 60 is transferred throughcouplings shaft 102. - Extending from
end face 108 at distal end 107 ofshaft 102 is astem 114. Mounted on the end ofstem 114 is arounded head 116. In the embodiment depicted,head 116 is spherical or substantially spherical. Here it is noted, as will be discussed below in greater detail,shaft 102 has a rotational axis and centrallongitudinal axis 118, which in the depicted embodiment are the same, and stem 114 has a centrallongitudinal axis 120.Stem 114 is eccentrically mounted onend face 108 ofshaft 102 so that centrallongitudinal axis 120 ofstem 114 is offset from centrallongitudinal axis 118 ofshaft 102.Rotational axis 118 can also be the same axis as the rotational axis and central longitudinal axis ofdrive shaft 66 and can also be the same as centrallongitudinal axis 38 of housing 36 (FIG. 1 ). - Returning to
FIG. 5 ,brush head 14 comprisesannular carrier plate 122, as previously discussed, havingtop surface 124. Projecting fromtop surface 124 is aspindle 126.Spindle 126 comprises acentral axle 128 having anarm 130 projecting from each side thereof. Arotational axis 127, about whichbrush 16 andbrush head 14 rotate, extends throughspindle 126.Rotational axis 127 can also be the central axis forbrush 16 andbrush head 14. Mounted onspindle 126 is ahub 132. As depicted inFIG. 9A ,hub 132 has opposing side surfaces 136 and 138 which extend between atop surface 140 and an opposingbottom surface 142.Hub 132 also includes afront face 144 and an opposing backface 146. Apassage 148 extends fromtop surface 140 tobottom surface 142. Aside channel 150 extends throughside surfaces bottom surface 142 so as to intersect withpassage 148. - During assembly,
hub 132 is received overspindle 126 so thataxle 128 extends throughpassage 148 andarms 130 are received withinside channel 150. A bearing or bushing 151 (FIG. 5 ) is mounted onaxle 128 attop surface 140 ofhub 132. In this configuration,hub 132 is engaged withspindle 126 such that rotation ofhub 132 facilitates rotation ofspindle 126 and thus the remainder ofbrush head 14. In alternative embodiment, it is appreciated thathub 132 can be integrally formed withbrush head 14. -
Hub 132 further comprises achannel 152 formed onfront face 144 and extending totop surface 140.Channel 152 is vertically aligned withpassage 148 and is bounded by afirst engagement surface 156, a spaced apartsecond engagement surface 158, and aninside face 159 extending therebetween. Engagement surfaces 156 and 158 are opposingly facing and are in substantially parallel alignment. Recessed along eachengagement surface channel 160. Each lockingchannel 160 is elongated and is slightly arched along the length thereof. The distance betweenengagement surfaces hub 132 is smaller than the diameter ofrounded head 116. - As depicted in
FIGS. 7 and 10 , however,hub 132 is configured so thathead 116 can be snap-fit betweenengagement surfaces head 116 is resiliently captured within lockingchannels 160 formed onengagement surfaces head 116 is resiliently biased betweenfaces 156 - In an alternative embodiment depicted in
FIG. 9B , lockingchannels 160 can be eliminated so that engagement surfaces 156 and 158 are substantially flat. In this embodiment,head 116 can be sized to snugly or loosely fit betweenengagement surfaces - Returning to
FIG. 5 ,head housing 7 is enclosed overdrive shaft 100 andhub 132 so thathead housing 7 rides againstbearings Bayonet slots 164 are formed ondistal end 28 ofbody housing 12 while bayonet prongs 166 project fromproximal end 32 ofhead housing 7. As such,head assembly 6 can be removably connected tobody assembly 5 using the bayonet connection (FIG. 1 ). - In the above assembled configuration,
couplings button 23 is depressed,motor 60 is energized causingdrive shaft 66 and driveshaft 100 to each rotate about their rotational or central longitudinal axis. In turn, becausestem 114 androunded head 116 are mounted eccentrically onshaft 102,head 116 rotates in a circle. That is, asshaft 102 spins or rotates,head 116 begins to rotate in an enlarged circle so as to bias againstengagement surface 158 ofhub 132 causinghub 132 withconnected brush head 14 andbrush 16 to rotate in a first direction aboutaxle 128. The length and arch of lockingchannels 160 allows for free rotation ofhead 116 within lockingchannels 160. - Once
head 116 has moved to its furthest extent in one direction,head 116 then begins to bias against the opposingengagement surface 156 causinghub 132, withconnected brush head 14 andbrush 16, to rotate in the opposing direction aboutaxle 128. As such, rapid rotation ofdrive shaft 100 withhead 116 causeshub 132 withconnected brush head 14 andbrush 16 to rapidly reciprocate. By securinghead 116 within lockingchannels 160, a snug engagement can be formed betweenhub 132 andhead 116. This snug fit optimizes the transfer of movement betweendrive rod 100 andhub 132. That is, the snug fit eliminates slop betweenhub 132 and driverod 100 even afterhead 116 has begun to wear within lockingchannels 160. - Once cleaning apparatus 10 is energized,
brush 16 can be biased against a surface for cleaning. It is noted thatbrush 16 is positioned at an orientationrelative housing 36 so as to optimize convenience and use. For example, with reference toFIG. 6 , in oneembodiment brush 16 projects relative to the central longitudinal axis ofbody assembly 5 orhead assembly 6 so as to form a set inside angle θ therewith typically in a range between about 90° to about 180° with about 110° to about 140° being more common. Other angles can also be used. Expressed in other terms,rotational axis 127 ofbrush head 14 orbrush 16 intersects withrotational axis 38 of the drive shaft or of centrallongitudinal axis 118 ofhousing 36 so as to form the set inside angle θ as discussed above. By having the angle θ at about 110° to about 140°, the user is able to more conveniently place and usebrush 16 while holding ontohousing 36. - The present invention may be embodied in other specific forms without departing from its spirit or essential characteristics. The described embodiments are to be considered in all respects only as illustrative and not restrictive. For example, it is appreciated that locking
channels 160 need not merely be recessed withininner side walls hub 132. Furthermore, it is not necessary thathead 116 be spherical. In alternative embodiments, it is appreciated thathead 116 can be elliptical or have a variety of other configurations that mate with complementary locking channels. - Depicted in
FIG. 11 is an alternative embodiment of acleaning apparatus 200 incorporating features of the present invention. Like elements between cleaningapparatus 10 and 200 are identified by like reference characters. Cleaning apparatus comprises ahead assembly 202 and abody assembly 204. Turning toFIG. 12A ,body assembly 204 comprises abody housing 206 which is molded as a tubular member.Body housing 206 comprises ahandle portion 208 having aproximal end 210 and an opposingdistal end 212.Distal end 212 terminates at and end face 214 from which a tapered,tubular stem 216 projects. A pair of opposingbayonet slots 217 are formed alongstem 216.Handle portion 208 and stem 216 are typically comprised of a substantially rigid plastic such as ABS. An overly 218, comprised of a softer, flexible plastic such as TPE or rubber, is molded over a section ofhandle portion 208.Overlay 218 allows improved gripping of cleaningapparatus 200. -
Body housing 206 has aninterior surface 220 which bounds achamber 222. Turning toFIG. 12B , secured withinchamber 222 is aguide 224.Guide 224 comprises anelongated partition wall 226 having aproximal end 228 and an opposingdistal end 230. The sides ofpartition wall 228 are curved so thatbatteries 78 can be complementary received on each side thereof. Acantilevered latch 232 is formed atproximal end 238 at both the top and bottom ofpartition wall 226. Eachlatch 232 terminates at abarb 234. Aspring 236 is positioned betweenpartition wall 226 and eachlatch 232 so that eachlatch 232 can be selectively compressed towardpartition wall 226 and, when released, eachlatch 232 resiliently rebounds. As depicted inFIG. 13 , holes 235 are formed through each side ofhandle portion 208 atproximal end 210. An engagingportion 238 ofoverlay 218 is molded overholes 235.Guide 224 is positioned withinchamber 222 to that eachlatch 232 is aligned with acorresponding hole 235. A user is thus able to manually press inward on the flexibleengaging portions 238 ofoverlay 218 so as to selectively inwardly press latches 232. -
Latches 232 are used for securing anend cap 240 toproximal end 210 ofbody housing 206. Specifically,end cap 210 has aninterior surface 242 with a pair of opposingcatches 244 formed thereon. Whenend cap 240 is pushed ontoproximal end 210 ofbody housing 206,barbs 234 onlatches 232 engagecatches 244 so as to securely lockend cap 240 onbody housing 206. To removeend cap 240, engagingportions 238 are manually depressed as discussed above so as to inwardly flexlatches 232 and thus releasebarbs 234 from catches 244. - Returning to
FIG. 12B ,cupped support 246 is formed atdistal end 230 ofpartition wall 226 and is used to supportmotor 60.Motor 60 rotates aninitial shaft 250 which in turn rotates adrive shaft 254. Driveshaft 254 has ahead 255 formed at a distal end thereof.Head 255 typically has a non-circular transverse cross section such that it can engage with a coupler as discussed below in greater detail. In the embodiment depicted,head 255 comprises a flattened portion ofdrive shaft 254. In alternative embodiments,head 255 can have any number of different polygonal or non-circular transverse cross sections. - A
conventional gear assembly 252 extends betweeninitial shaft 250 and driveshaft 254 so that the torque produced bydrive shaft 254 is adjusted relative to the torque produced byinitial shaft 250 by a ratio in a range between about 1.5:1 to about 3.5:1. Increasing the torque capacity ofdrive shaft 254 enablebrush 16 to continue to reciprocate or rotate even when substantial bearing force is applied to brush 16 while scrubbing. This is contrary to many conventional electric toothbrushes where it is desired that the brush stop moving or significantly slow when too much force is applied so that the toothbrush does not damage the gums. - It is appreciated that there are a variety of different mechanism that can be used to transfer electricity from
batteries 78 tomotor 60. In the illustrated embodiment, the fourbatteries 78 are disposed in parallel. The negative end of the back twobatteries 78 bias against acorresponding spring 256 which are each in electrical communication with atransfer spring 258. The springs are mounted on aplate 255 which is secured withinend cap 240.Transfer spring 258 biases against acontact 260. Anelectrical lead 262 extends fromcontact 260 tomotor 60. The positive end of the front twobatteries 78 bias against acorrespond contact 264 which are each in electrical communication with aflexible switch 266.Switch 266 is positioned abovemotor 60 such that whenswitch 266 is biased againstmotor 60, the circuit is complete andmotor 60 is energized. - In an alternative embodiment,
batteries 78 can be positioned in series rather then parallel. In this embodiment, springs 256 are in electrical communication with each other buttransfer spring 256, contact 260, and lead 262 are eliminated. Likewise, the twocontacts 264 are separated from each other. One ofcontacts 264 is in direct electrical communication withmotor 60 while theother contact 264 remains connected withswitch 266. Placingbatteries 78 in series increases the voltage to provide more power to the motor. - Turning to
FIG. 12A , anopening 270 is formed on a topsurface body housing 206 so as to communicate withchamber 222.Opening 270 is aligned withmotor 60 andswitch 266. Secured withinopening 270 is aflexible diaphragm 272.Diaphragm 272 has atop surface 274 and an opposingbottom surface 276. Aprojection 278 is formed ontop surface 274. Acover plate 280 has anelongated hole 282 extending therethrough and is secured overopening 270 so thathole 282 is aligned withprojection 278. Abutton 284 is slidably mounted to coverplate 280 by acatch 286 and aretainer 288. - As depicted in
FIG. 14A ,button 284 comprises a generally cup-shapedbody 290 having aninterior surface 292 with astem 294 projecting therefrom.Button 284 is comprised of a resiliently flexible material which is typically a natural or synthetic rubber.Retainer 288 comprises a substantiallycircular frame 296 having anopening 298 extending therethrough.Opening 298 is at least partially bounded by alip 300.Retainer 288 is comprised of a substantially rigid material or at least a material that is more rigid than the material used forbutton 284.Button 284 is secured toretainer 288 so thatstem 294 passes throughopening 298. In one embodiment,button 284 is secured toretainer 288 by being molded directly ontoretainer 288 during the formation ofbutton 284, i.e., overlay molding process. - Catch 286 (
FIG. 14B ) comprises a base 302 having anopening 304 extending therethrough. A pair ofbarbed prongs 306 upwardly project from a top surface ofbase 302 on opposing sides ofopening 304. Catch 286 is used to securebutton 284 oncover plate 280. Specifically,button 284 andretainer 288 are positioned on the top surface ofcover plate 280 so thatstem 294 is aligned with opening 282 ofcover plate 280.Prongs 306 ofcatch 286 are then pushed up throughopening 282 ofcover plate 280 from the bottom surface thereof so that prongs engage withlip 300 ofretainer 288 by a snap fit connection. - In this assembled configuration,
button 284 can selectively side oncover plate 280 between an off position as shown inFIG. 14A and an on position as shown inFIG. 14C . In the off position,projection 278 ofdiaphragm 272 is disposed betweenstem 294 ofbutton 284 and switch 266 and is at least partially disposed within opening 304 ofcatch 286. In this position, switch 266 is spaced apart frommotor 60 so that no electrical contact is made. From the off position, there are two ways in which a user can energizemotor 60. In one approach, as depicted inFIG. 14B , a user can simply press down on the center ofbutton 284. In so doing, stem 294 is pressed down againstprojection 278 which in turn pushes downswitch 266 so thatswitch 266 contacts motor 60, thereby energizingmotor 60. When the user releasesbutton 284,button 284 resiliently returns to the off position. - In the second approach as depicted in
FIG. 14C , the user manually slidesbutton 284 alongcover plate 280. In so doing,base 302 ofcatch 286 rides overprojection 278 which pushesprojection 278 downward again causingswitch 266 to contactmotor 60, thereby energizingmotor 60.Motor 60 remains energized untilbutton 284 is again moved back to the off position. The button assembly thus enables a single, integral button to activate the motor in two different modes of operation. - Returning to
FIG. 12A ,head assembly 202 comprises ahead housing 201 which includesupper head housing 22 andlower head housing 24 each havingproximal end 32 and opposingdistal end 34.Head housing 201 bounds achannel 316 extending along the length thereof which is at least partially divided bycomplementary partition walls 317 formed onhousing housing proximal end 32 is anengagement ring 312.Engagement ring 312 has opposingbayonet prong 318 formed on an interior surface thereof.Head assembly 202 is removably secured tobody assembly 204 by insertingstem 216 ofbody housing 206 withinproximal end 32 ofhead assembly 202 so that bayonet prongs 318 are received withinbayonet slots 217 and then rotatinghead assembly 202 relative tobody assembly 204. -
Head assembly 202 comprises adrive shaft 320 having aproximal end 322 and an opposingdistal end 324.Proximal end 322 has acoupler 326 secured thereto.Coupler 326 has asocket 328 formed on the free end thereof that is designed to removably engage withhead 255 ondrive shaft 254 extending frommotor 60. Specifically,socket 328 has a configuration complementary to head 255 such that whenhead 255 is received withinsocket 328, rotation ofdrive shaft 254 causes rotation ofdrive shaft 320.Head 255 is removably received withinsocket 328 whenhead assembly 202 is removably coupled withbody assembly 204 as discussed above. - An
enlarged disk 330 is secured todistal end 324 ofdrive shaft 320. In the embodiment depicted,disk 330 has a substantially cylindrical configuration that includes aproximal end face 332 and an opposingdistal end face 334.Distal end 324 ofdrive shaft 320 is centrally secured toproximal end face 332. In contrast, stem 114 androunded head 116 are mounted ondistal end face 334 at a location spaced radially outward from the rotational axis ofdrive shaft 320. That is,stem 114 is eccentrically mounted onend face 334 in the same manner as discussed above with regard to cleaning apparatus 4. - It is noted that centrally positioning
enlarged disk 330 at the end ofdrive shaft 320 helps to stabilizedrive shaft 320 during the rotation of eccentrically mountedrounded head 116. In alternative embodiments, however, driveshaft 320 can have the same diameter asdisk 330 ordisk 330 can be eliminated and an arm formed betweendrive shaft 330 andstem 114. Other conventional techniques can also be used to eccentrically positionrounded head 116. Acylindrical bushing 336 encircles driveshaft 320 towarddistal end 324 and is supported withinsupports 338 formed on the interior surface ofhead housing 201. - As with cleaning apparatus 4,
cleaning apparatus 200 includesbrush head 14.Brush head 14 comprisescarrier plate 122 havingbottom surface 125 withbrush 16 comprised of bristles formed thereon.Plate 122 also hastop surface 124 withspindle 126 andarms 130 projecting therefrom.Axle 128 centrally projects fromspindle 126 and has a rotational axis extending therethrough. Atubular bushing 340 is secured toupper head housing 22 and encircles axle 128 (FIG. 13 ).Axle 128 andspindle 126 are received within ahub 342 with awear plate 341 positioned betweenbushing 340 andspindle 126. - As depicted in
FIG. 15 ,hub 342 comprises a substantiallycylindrical base 344 having afront face 346, aback face 348, and opposing side faces 350 and 351 which each extend between atop surface 352 and an opposingbottom surface 354. Apassage 356 centrally extends throughbase 344 fromtop surface 352 tobottom surface 354. Aside channel 358 extends throughside surfaces bottom surface 354 so as to intersect withpassage 356.Side channel 358 is configured so that whenspindle 126 is received withinpassage 356,arms 130 are received withinside channel 358 so thathub 342 is interlocked withbrush head 14.Wear plate 341 also has tabs projecting from the side thereof which are received withinside channel 358 ofhub 342 so thatwear plate 341 is secured tohub 342. In one embodiment wherebushing 340 is metal andspindle 126 is plastic, wearplate 341 prevents bushing 340 from producing undue wear onspindle 126. - Projecting from
back face 348 ofbase 344 is aguide 360.Guide 360 comprises afirst side wall 362, a complementary spaced apartsecond side wall 364, and aback wall 366 extending therebetween.Guide 360 partially bounds achannel 368 that is vertically aligned withpassage 356.Channel 368 is bounded by afirst engagement surface 370, a spaced apartsecond engagement surface 372, and aninside face 374 extending therebetween. Engagement surfaces 370 and 372 are opposingly facing, are substantially flat, and are in substantially parallel alignment. The distance betweenengagement surfaces hub 342 is substantially equal to the diameter ofrounded head 116. - Comparable to the embodiment depicted in
FIG. 10 and as illustrated inFIG. 13 , roundedhead 116 is received withinchannel 368. As roundedhead 116 is continuously rotated about the rotational axis ofdrive shaft 320 due to the rotation ofdrive shaft 254, roundedhead 116 alternatingly pushes against opposing engagement surfaces 370 and 372 so as to causehub 342,brush head 14, andbrush 16 to reciprocate in a rotational pattern about the rotation axis extending throughspindle 126. - As with cleaning apparatus 4, in cleaning
apparatus 200 the rotational axis ofdrive shaft 320 intersects with the rotational axis ofbrush head 14 so as to form an inside angle θ that is typically greater than 95° and is more commonly in a range between about 110° to about 140°. As roundedhead 116 travels in its circular pattern,rounded head 116 travels longitudinally along the length ofside walls brush head 14, roundedhead 116 is disposed farther away from the rotational axis ofbrush head 14 when roundedhead 166 is disposed at the bottom ofside walls brush head 14 when roundedhead 166 is disposed at the top ofside walls rounded head 166 is retained withinchannel 368 during its circular movement,side walls - In one embodiment rounded
head 116 has a substantially spherical configuration. This design has a number of benefits. For example, in part because of the above discussed angular orientation ofbrush head 14, roundedhead 116 contacts engagement surfaces 370 and 372 along a number of different points onrounded head 116 that are longitudinally spaced proximal to distal and top to bottom. By makingrounded head 116 spherical, this helps to ensure continued minimal contact betweenrounded head 116 andengagement surfaces - Furthermore, due to tolerances in mounting
brush head 14, on occasion asbrush 16 is biased against a surface for cleaning,brush head 14 will tilt slightly causing the distal end ofrounded head 116 to bias againstinside face 374 of hub 342 (FIG. 15 ). This contact betweenrounded head 116 and insideface 374 helps to stabilize and reinforcebrush head 14. By makingrounded head 116 spherical, the contact surface betweenrounded head 116 and insideface 374 is minimized. It is also noted that both ofside walls outside edge 376. Theseoutside edges 376 are designed so that they can bias againstdistal end face 334 ofdisk 330 asbrush head 14 is tilted during use so as to also help stabilize and reinforcebrush head 14. - In the forgoing embodiment,
bush 16 has a fixed orientation relative tobody assembly 204. In one alternative embodiment depicted inFIG. 16 , acleaning apparatus 386 is provided having ahead assembly 388 whereinbrush 16 can be pivoted alongarrow 390 so as to selectively adjust the orientation ofbrush 16relative body assembly 204. Like elements betweenhead assembly 202 andhead assembly 388 are identified by like reference characters. -
Head assembly 388 comprises aproximal head housing 392, adistal head housing 394, and ahinge 396 pivotally connectinghousing FIG. 17 ,proximal housing 392 has adistal end 398. Anopening 399 is formed atdistal end 398 through which driveshaft 320 extends (FIG. 18A ).Hinge 396 comprises a pair ofrounded prongs opening 399.Hinge 396 comprises two identical halves with the components for the two halves identified by the suffixes A and B. Only one of the halves will be described in detail herein with the understanding that the other half is identical thereto. Projecting from an outside face ofprong 400A is acircular ring 402A. A pair of opposingnotches 404A are formed onring 402A. - Hinge 396 also comprises a pair of
rounded arms distal head housing 394.Arm 406A has aninside face 410A to anoutside face 412A. A substantially circular recessed pocket 414A is formed on insideface 410A. Pocket 414A has a plurality ofrounded notches 416A formed on the perimeter edge of pocket 414A on opposing sides thereof. Eachnotch 416A is separated by aridge 417A. Acircular recess 408A is formed on the floor of pocket 414A and is sized to receivering 402A. - A
spring 418A is provided and is comprised of a resilient flexible material such as metal commonly used in springs.Spring 418A comprises aring body 420A having anexterior surface 422A and aninterior surface 424A. A pair ofrounded tabs 426A project fromexterior surface 422A on opposing sides ofring body 420A. Likewise, a pair ofrectangular tabs 428A project frominterior surface 424A on opposing sides ofring body 420A. - During assembly,
tabs 428A ofspring 418A are received withincorresponding notches 404A onprong 400A so thatspring 418A is secured toprong 400A. Next,arm 406A is positioned so thatspring 418A is received within pocket 414A andring 402A is received withinrecess 408A.Tabs 426A are received withincorresponding notches 416A so thatarm 406A is fixed relative toprong 400A. When it is desired to change the orientation ofbrush 16, a force is applied todistal head assembly 394 along arrow 390 (FIG. 16 ). The force causesspring 418A to rotate within pocket 414A. Specifically,spring 418A deflects astabs 426A pass overridges 417A and then resiliently rebounds astabs 426A pass into theadjacent notches 416A. In part, the resistance of the movement ofdistal head assembly 394 is based on the stiffness ofsprings - As depicted in
FIGS. 18A and 18B , as a result ofhinge 396,brush head 14 can now rotate over an angle of 90°. For example, the angle θ previously discussed can be selectively adjusted from about 90° to about 180°. As also depicted inFIGS. 18A and 18B , the internal components ofhead assembly 388 are substantially the same as the internal components ofhead assembly 202. The shape ofhub 342, however, has been modified slightly so thatrounded head 116 is retained betweensidewalls head 116 moves in the circular pattern, independent of the orientation ofbrush head 14. It is also noted fromFIG. 16 , thatbrush 16 has a larger diameter than prior depicted brushes 16 and that somebristles 182 are longer than others. It is appreciated that the present invention can comprise a kit having a single body assembly and a plurality of different head assemblies which can be selectively secured to the body assembly. Each head assembly can have a brush having a different size, configuration, and/or physical properties, such as stiffness of bristles. For example, depicted inFIG. 19 is abrush 16 having aconical tip 434 for better reaching and scrubbing the inside of corners. - In the above discussed embodiments, the head assemblies are designed so that the brushes rotate in a reciprocating manner. In alternative embodiments, the head assembly can be designed so that the brush rotates in a continuous circular manner. For example, depicted in
FIG. 20A is ahead assembly 436. Like elements betweenhead assembly 436 andhead assembly 388 are identified by like reference characters.Head assembly 436 comprisesproximal head housing 392,distal head housing 394 and hinge 396. Abrush head 438 has a first side withbrush 16 projecting therefrom and an opposing second side with aspindle 440 projecting therefrom.Spindle 440 is coupled with auniversal joint 441. Adrive shaft 442 is disposed withinproximal housing 392. Driveshaft 442 hascoupler 326 mounted on a proximal end thereof anduniversal joint 441 mounted on a distal end thereof. - Depicted in
FIGS. 21A and 21B ,universal joint 441 comprises acup 444 and aball 446.Spindle 440 projects from one side ofcup 444 while arounded socket 448 is formed on the opposing side ofcup 444.Socket 448 is bounded by aninterior surface 450 from which a pair of opposingly, spaced apart,rounded projections 452 extend adjacent to the mouth ofsocket 448.Ball 446 is rounded and is adapted to fit withinsocket 448. An elongated,rounded slot 454 is recessed on each opposing side ofball 446.Slots 454 are configured so that whenball 446 is received withinsocket 448,projections 452 are received within correspondingslots 454. In one embodiment,slots 454 can be combined to form one long slot. In this assembled configuration, continuous rotation ofdrive shaft 442 causes rotation ofball 446, which, due to the engagement betweenprojections 452 andslots 454, causes continuous rotation ofcup 444,spindle 440,brush head 438 andbrush 16. - Furthermore, because
slots 454 are elongated,ball 446 can rotate withinsocket 448 byprojections 452 sliding longitudinally withinelongated slots 454. As a result, as depicted inFIGS. 20A and 20B ,spindle 440 is free to pivot relative to driveshaft 442, thereby enablingdistal head assembly 394 to pivot relative toproximal head assembly 392 as a results ofhinge 396 as discussed above. - Depicted in
FIG. 22 is an alternative embodiment of cleaningapparatus 200. In this embodiment alight source 460, such as a light emitting diode (LED) is mounted on the bottom side ofbody assembly 204 toward the distal end thereof.Light source 460 is oriented so as to direct light towardbrush 16 so as to increase visibility of the cleaning surface during use.Leads 462 extend fromlight source 460 tomotor 60 such that whenmotor 60 is energized,light source 460 is also energized. In an alternative embodiment, a second button switch can also be provided forlight source 460. - Depicted in
FIG. 23 is another alternative embodiment of cleaningapparatus 200. In this embodimentlight source 460, is mounted on the bottom surface ofhead assembly 202 so as to direct light towardbrush 16. Again, leads 462 extend betweenlight source 460 andmotor 60. In this embodiment, however,contacts 464 are formed at the connection betweenhead assembly 202 andbody assembly 204. - The present invention may be embodied in other specific forms without departing from its spirit or essential characteristics. The described embodiments are to be considered in all respects only as illustrative and not restrictive. The scope of the invention is, therefore, indicated by the appended claims rather than by the foregoing description. All changes which come within the meaning and range of equivalency of the claims are to be embraced within their scope.
Claims (21)
Priority Applications (9)
Application Number | Priority Date | Filing Date | Title |
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US11/014,626 US20050144744A1 (en) | 2004-01-02 | 2004-12-15 | Cleaning apparatus with reciprocating or rotating brush head |
PCT/US2004/042819 WO2005067764A1 (en) | 2004-01-02 | 2004-12-16 | Cleaning apparatus with reciprocating or rotating brush head |
BRPI0417911-0A BRPI0417911A (en) | 2004-01-02 | 2004-12-16 | rotary or reciprocating brush head cleaner |
EP04814951A EP1703822A4 (en) | 2004-01-02 | 2004-12-16 | Cleaning apparatus with reciprocating or rotating brush head |
JP2006547235A JP4709163B2 (en) | 2004-01-02 | 2004-12-16 | Cleaning tool with reciprocating or rotating brush head |
CA2553164A CA2553164C (en) | 2004-01-02 | 2004-12-16 | Cleaning apparatus with reciprocating or rotating brush head |
CN2004800422563A CN1964646B (en) | 2004-01-02 | 2004-12-16 | Cleaning apparatus with reciprocating or rotating brush head |
KR1020067013309A KR101009684B1 (en) | 2004-01-02 | 2004-12-16 | Cleaning apparatus with reciprocating or rotating brush head |
HK07112436.0A HK1103609A1 (en) | 2004-01-02 | 2007-11-14 | Cleaning apparatus with reciprocating or rotating brush head |
Applications Claiming Priority (3)
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US53401004P | 2004-01-02 | 2004-01-02 | |
US29/217,231 USD513881S1 (en) | 2004-11-15 | 2004-11-15 | Cleaning apparatus |
US11/014,626 US20050144744A1 (en) | 2004-01-02 | 2004-12-15 | Cleaning apparatus with reciprocating or rotating brush head |
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US29/217,231 Continuation-In-Part USD513881S1 (en) | 2004-01-02 | 2004-11-15 | Cleaning apparatus |
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US11/014,626 Abandoned US20050144744A1 (en) | 2004-01-02 | 2004-12-15 | Cleaning apparatus with reciprocating or rotating brush head |
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US (1) | US20050144744A1 (en) |
JP (1) | JP4709163B2 (en) |
CN (1) | CN1964646B (en) |
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CA (1) | CA2553164C (en) |
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WO2011044284A1 (en) * | 2009-10-06 | 2011-04-14 | Sonicsrubbers, Inc. | Cleaning apparatus with rotating and detachable brush head |
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USD923270S1 (en) * | 2019-08-27 | 2021-06-22 | E. Mishan & Sons, Inc. | Scrubber |
Also Published As
Publication number | Publication date |
---|---|
WO2005067764A1 (en) | 2005-07-28 |
HK1103609A1 (en) | 2007-12-28 |
JP4709163B2 (en) | 2011-06-22 |
JP2007520268A (en) | 2007-07-26 |
CN1964646A (en) | 2007-05-16 |
CA2553164C (en) | 2014-02-11 |
CN1964646B (en) | 2011-01-19 |
CA2553164A1 (en) | 2005-07-28 |
BRPI0417911A (en) | 2007-04-10 |
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Owner name: SONICSCRUBBERS, INC.,UTAH Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:SONICSCRUBBERS, LLC;REEL/FRAME:024445/0955 Effective date: 20100524 Owner name: SONICSCRUBBERS, INC., UTAH Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:SONICSCRUBBERS, LLC;REEL/FRAME:024445/0955 Effective date: 20100524 |
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