CN102791164A

CN102791164A - Methods of combining brush head plates with brush bodies

Info

Publication number: CN102791164A
Application number: CN2010800577150A
Authority: CN
Inventors: B·G·保捷利
Original assignee: GB Boucherie NV
Current assignee: GB Boucherie NV
Priority date: 2009-12-17
Filing date: 2010-12-16
Publication date: 2012-11-21
Anticipated expiration: 2030-12-16
Also published as: DE102009058608A1; DE102009058608B4; WO2011072865A1; EP2512286A1; CN102791164B; EP2512286B1

Abstract

A method of combining a brush head plate with a brush handle or part of brush handle is disclosed which makes use of any of a mechanical, friction, welding, gluing and molding technique or of a combination of these techniques.

Description

The method that head plate combines with brush body

People have known several kinds of methods of making brush.Traditionally, brush body is provided with the hole row corresponding with the bristle arrangements of desired formation.Then bristle bundle or brushing cluster are inserted the hole of brush body, and through compressing into little metal anchorage or being fixed therein through ring.

In the optional method of making brush; A kind of method of being accepted extensively by people in recent years is called as AFT method (no anchoring piece cluster method); Wherein do not use the ring or the anchoring piece situation under brushing cluster is connected to little head plate, again this loading plate is installed into or is connected to the main body or the brush holder of brush.In the variant of this AFT method, the brush holder of making has the pattern that the hole corresponding with the brushing cluster pattern of expectation formation formed.Brushing cluster is inserted in these holes, and be connected to brush holder.Cover the link of these bunches then with platelet, this plate then be connected to brush handler.

In Fig. 1 to Figure 18 of accompanying drawing, show the different technologies that a plate is combined with brush holder or its part.

In existing mechanical processing, a plate is connected to handle has two kinds of main modes:

First method is through a plate being placed the into tank of handle (as shown in Figure 1), and with ultrasonic wave two parts is welded together (as shown in Figure 3).This is a kind of quick and reliable method that is connected these two parts.The shortcoming of this method is that it has stayed space (as shown in Figure 2) between the rear portion of a plate and the tank front in the brush holder.This can make (as shown in Figure 5) up through in this tank, placing this space of a certain amount of packing material filling.This packing material can be the resin that solidifies through after a while, or when solidifying, fills the expanding material in this space.

The second method of current employing promptly is to go out handle through Overmolded on a plate.In this case, the plate of band brushing cluster placed get in the die cavity, after this Overmoldedly on this plate go out handle, form firmly and connect.This method has certain disadvantages: Overmolded material pressure arrives the plate surface that filament links together, and causes the Overmolded material maybe be from the risk of leaking between the filament.Deform after resin solidification, cooling and the contraction of warm heat at the parts that also can cause with hot resin-coated moulding on the cold plate accomplishing, crooked script is in a plate of the state of cooling.

The present invention points to some alternative methods that this carrier head plate is combined with brush body, and each in these methods all has specific advantage.

Basically, it is following a plate to be assembled into the method that perhaps is assembled on this handle or its part in handle or its part:

Friction welding.

---linearity is welded, and for example passes through the mode (see figure 3) of ultrasonic vibration

---planetary orbit formula welding (planetary welding) (see figure 4)

---high-frequency welding

Mechanical connection

---an integrated circuit board is gone into (see figure 6) in the handle

---a plate is slipped into the bottom grooving of brush, and this plate can be locked in place after this.Locks in place can or be put gluing modes such as (Fig. 7) through mechanical positioning pin system or spot welding.

---said plate is stacked and placed on the toothbrush handles: compress on the jut (column) of (tank in the plate or hole) to toothbrush handles.For making connection more firm, can element be pressed in the hollow projection, so that its expansion and formation side recessed (seeing Fig. 8 A and Fig. 8 B).

---plate is stacked and placed on the toothbrush handles: in (crowd) projection on the hold-down head plate or the tank of column to toothbrush handles.For making connection more firm, can element be pressed in the hollow projection, so that its expansion and formation side recessed (seeing Fig. 9 A and Fig. 9 B).

Welding:

---heat two parts and with its mutual extrusion, the material on two parts fuses (Figure 10) each other.These parts or one of them part can be provided with specific texture (Figure 10 B), thereby make that the surface area of this part is bigger, and make more plastics plastify, to form strong connection and to fill up any space between two parts.Can be through hot gas (for example air or inert gas such as nitrogen) or the hot-die head through during heating contacting one or two part, or heat these parts through radiation (for example during heating being maintained at the hot body between two parts, the surface that its heat radiation to desire is plastified).

---heat in these two parts, and projection is compressed into the material of plasticizing, it solidifies once more by the time, thereby makes its locks in place (Figure 11) through the interference fit of stinging tooth formation in the jut.

---metal parts is placed between a plate and the handle, and they can be welded together through induction after this, heat this centre part, and two plastic parts are pressed on it.Toothbrush handles self can certainly all be or part is metal (Figure 12).

---solvent welded: two parts can be coated with solvent, and this solvent can soften the surface that will be combined together.After the solvent evaporation, a plate will be fixed to toothbrush handles.

--laser weld: the stock of a plate or the material of toothbrush handles all must be transparent or translucent at least; So that the light beam of lasing light emitter can pass through; Thereby make and have only the material at matching surface place to be heated, this matching surface is pressed on together and solidifies (Figure 13) once more up to these materials.

---high-frequency welding: the material in a plate and/or toothbrush handles is under the situation of ambipolar material, and the material of one or two matching surface can be through the frequency electromagnetic waves plasticizing.

Glued joint:

---through bonding agent is connected on a plate and the toothbrush handles, and solidify through the solvent evaporation.

---through bonding agent is connected on a plate and the toothbrush handles, and triggers in chemicals or any illumination or its combination and solidify through being exposed to moisture or radiation or polymerization.

---through the mode of " hot glue " or " PUR " (thermoplastic adhesive): can the hot glue of (heating in advance) under fluid state be placed on a plate or the toothbrush handles; Perhaps place simultaneously on the two, after this two parts are fitted together.

---through the mode of " hot glue " or " PUR " (thermoplastic adhesive): can the hot glue of (cold conditions) under solid state be placed on a plate or the toothbrush handles; Perhaps place on the two simultaneously; After this in assembling process, two parts are heated, in this step, make the glue fusing.The form of the glue that adds can be film, pelletizing or particle.

---through " heat-curable adhesive ": can the bonding agent under liquid condition be placed on a plate or the toothbrush handles, perhaps place simultaneously on the two, after this two parts of heating in assembling process trigger bonding in this step.

---through expanding or foam adhesive: can bonding agent be placed on a plate or the toothbrush handles; Perhaps place on the two simultaneously; After this two parts are clamped together and trigger bondingly, the mode of carrying out this triggering is the influence (Figure 14) through heat or radiation or moisture or any other form.The advantage of this bonding agent is that it will fill up any space in the head toothbrushes, avoids any gathering of pollutant and bacterium.

Assembling in the mould:

---can the plate of band brushing cluster be placed and get in the die cavity, after this Overmoldedly on this plate go out handle, form and firmly connect (Figure 15).This is the method that adopts at present, has certain disadvantages: Overmolded material pressure arrives the plate surface that filament links together, and causes the Overmolded material maybe be from the risk of leaking between the filament.The part that on a cold plate, also can cause accomplishing with hot resin-coated moulding deforms in resin solidification, cooling and the contraction of warm heat.

---can a plate and the preparatory molded handle of band brushing cluster be put into mould, after this in the zone that two prefabricated parts must connect, be coated with a spot of resin (Figure 16 A).Overmolded material must combine with two prefabricated parts, so that these two parts are linked together.This Overmolded material can be common plastic resin, perhaps compatible thermoplastic elastomer (TPE).Same Overmolded material can form additional element on brush, for example cleaning or put in order white element (cleaning refer to, clean thin plate ...).This Overmolded material can also be used on brush, forming other specific structure, for example scraper, Spring toothpicks or tongue cleaner (Figure 16 B).Same Overmolded material can be used for being filled in the rear side of a plate and the space between the tank in the preparatory molded handle.

For any of these assemble method, can also add one or more materials separately and come the rear side of filling head plate and the space between the tank in the preparatory molded handle.Can be with a certain amount of material; For example plastic resin is when it still is plastifying state; Place a plate rear side and make its rear side spread (Figure 17 A) out at a plate through push rod; Perhaps can in number of assembling steps, a plate be put in the tank in the molded in advance handle, when the plastic material of this interpolation also is in mecystasis, make it spread (Figure 17 B) out at the rear portion of a plate.

As the rear side of another kind of filling head plate and the method in the space between the tank in the preparatory molded handle, can after number of assembling steps, material be injected in this space, fill this space effectively to avoid any foreign substance sedimentation or to accumulate in (Figure 17 C) here.

---as alternative; Can use plastics Overmolded on a plate; Its sole purpose is base portion and the peripheral region sealing of on a plate, fixing filament and making the band brushing cluster, avoids moisture, water and/or bacterial penetration to the base regions (Figure 18) with brushing cluster.Can a this Overmolded plate be assembled on the handle then, the mode of assembling can be any aforesaid method: welding, splicing, Overmolded, alignment pin or its combination in any.

One will understand that, can be used in combination in above-mentioned a lot of technology.For example, mechanical snap can or be gluedd joint step or Overmolded step combines with welding.Content intention disclosed herein comprises these combinations.

In accompanying drawing 19, the head 10 of toothbrush illustrates with the mode that neck 5 is clipped with part.Head 10 is shells, and this shell has diapire and from the perisporium of diapire erect and define tank.Diapire has the through hole that forms pattern, and this pattern is corresponding with the pattern of the brushing cluster of expectation, and the brushing cluster 4 of hairbrush is inserted in these holes and is connected in the diapire of tank inside.Seal tank with closure member then, this closure member that illustrates is this tank and be connected to the platelet 34 of head 10 of packing into.For plate 34 is connected on the head 10 of brush holder, can adopt above-mentioned any technology.As alternative, closure member is molded, for example in the molded step of a similar above-mentioned molding technique arbitrarily, suitable material is filled into tank.

Claims

1. one kind makes head plate combine with the part of brush holder or brush holder, the method that the part of the brush holder that is connected with brushing cluster or this brush holder is combined with the closure member of the link that will cover this brushing cluster,

It is characterized in that, through

Mechanical technique,

Friction techniques,

Solder technology,

Adhesive bonding technique,

Molding technique

In any technology, perhaps the combination in any through this mechanical technique, this friction techniques, this solder technology, this adhesive bonding technique, this molding technique combines.