EP0704179A1 - Toothbrush - Google Patents

Toothbrush Download PDF

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Publication number
EP0704179A1
EP0704179A1 EP95109184A EP95109184A EP0704179A1 EP 0704179 A1 EP0704179 A1 EP 0704179A1 EP 95109184 A EP95109184 A EP 95109184A EP 95109184 A EP95109184 A EP 95109184A EP 0704179 A1 EP0704179 A1 EP 0704179A1
Authority
EP
European Patent Office
Prior art keywords
bristle insert
bristle
holding recess
insert
handle
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.)
Granted
Application number
EP95109184A
Other languages
German (de)
French (fr)
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EP0704179B1 (en
Inventor
Alwin Blum
Matthias Georgi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fuchs GmbH
Original Assignee
Fuchs GmbH
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Filing date
Publication date
Application filed by Fuchs GmbH filed Critical Fuchs GmbH
Publication of EP0704179A1 publication Critical patent/EP0704179A1/en
Application granted granted Critical
Publication of EP0704179B1 publication Critical patent/EP0704179B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A46—BRUSHWARE
    • A46B—BRUSHES
    • A46B7/00—Bristle carriers arranged in the brush body
    • A46B7/04—Bristle carriers arranged in the brush body interchangeably removable bristle carriers
    • A46B7/042—Clip or snap connection for bristle carriers
    • A—HUMAN NECESSITIES
    • A46—BRUSHWARE
    • A46B—BRUSHES
    • A46B7/00—Bristle carriers arranged in the brush body
    • A46B7/04—Bristle carriers arranged in the brush body interchangeably removable bristle carriers
    • A—HUMAN NECESSITIES
    • A46—BRUSHWARE
    • A46B—BRUSHES
    • A46B2200/00—Brushes characterized by their functions, uses or applications
    • A46B2200/10—For human or animal care
    • A46B2200/1066—Toothbrush for cleaning the teeth or dentures

Definitions

  • the invention relates to a toothbrush with a replaceable bristle insert which can be snapped into an elongated holding recess of a head part connected to a handle and a handle, and a push button connected to the bristle insert which projects through an opening in the rear wall of the holding recess arranged near the handle-side end of the holding recess, wherein project on both sides of the pusher button and on the end face on the end of the bristle insert facing away from the pusher button on the circumferential surface of the latching bars, which engage in latching grooves on the inner wall of the holding recess.
  • toothbrushes also referred to as interchangeable head toothbrushes
  • the bristle insert is interchangeable, the connection between the bristle insert and the head part being made by a snap connection.
  • the bristle insert should be firmly anchored in the head part when using the toothbrush, so that it cannot accidentally become detached.
  • the latching connection should be so easy to release that the bristle insert can be replaced in a simple manner and without using a tool.
  • the bristle insert is designed so that its side walls converge in the direction of the bristles. These side walls and the associated inner walls of the holding recess are flat and free of grooves.
  • the locking connections formed by locking strips or locking projections and assigned locking grooves are provided at both ends of the bristle insert. Since this latching connection acts on both ends of the bristle insert close to its bristle-side outer surface, there is a risk that the latching connection will disengage at one end of the bristle insert and the bristle insert will detach from the head part if the bristle insert bends.
  • the locking strips are arranged on the mutually parallel side surfaces of the bristle insert at a distance from one another. Since the circumferential surface of the bristle insert extends perpendicular to the bristle-side base surface of the bristle insert over the entire circumference, the connection between the bristle insert and the head part takes place without a clamping effect only by the latching forces applied to the latching strips.
  • the peripheral surface of the bristle insert runs perpendicular to the bristle-side base surface of the bristle insert, and the bristle insert is anchored exclusively by the holding strips, which here are over a substantial part the length of the mutually parallel side surfaces of the bristle insert.
  • the locking groove receiving the locking strips extends over the entire inner circumference of the holding recess, as a result of which the contact area between the peripheral surface of the bristle insert and the holding recess is further reduced.
  • the object of the invention is therefore to provide a toothbrush of the type mentioned in the introduction, in which the advantages of an easy releasability of the bristle insert are combined with the advantages of a connection between the bristle insert and the head part which is safe and free of play during operation.
  • the bristle insert tapers over most of its length to the end facing away from the push button and in the tapering area with smooth, uninterrupted sections of its peripheral surface lies flat against smooth, uninterrupted sections of the inner wall of the holding recess, and that the locking grooves are arranged only in the area of the locking strips on the inner wall of the holding recess.
  • the tapered shape of the bristle insert tapering towards the head end and the holding recess result in a wedge or clamping effect by which the bristle insert is held securely in the head part.
  • This clamping effect occurs on relatively large, uninterrupted surface areas of the peripheral surface of the bristle insert, so that it is still held securely in use even when the head part is deformed.
  • the peripheral surface of the bristle insert and the inner wall of the holding recess preferably run essentially perpendicular to the bristle-side base surface of the bristle insert. Therefore, the wedge effect supporting the bristle insert occurs only in the longitudinal direction of the bristle insert; the loosening of the bristle insert is not impaired by this, especially since the push button is located in the area of the bristle insert in which the holding effect is essentially only caused by the locking strips on both sides.
  • the bristle insert is supported with its push button on the handle-side end of the opening of the rear wall.
  • the bristle insert is clamped elastically in its longitudinal direction, the support being provided on the one hand on the push button and on the other hand on the wedge-shaped tapering side surfaces. Since these two support areas are at a sufficiently large distance from one another, the elastic suspension of the material located between them has a favorable effect on the anchoring effect.
  • the bristle insert is pressed into the wedge connection with the head part from its end having the pusher button.
  • the flat contact between the brush head and the head part in the tapered section which is not interrupted by strips or grooves, provides secure support and connection.
  • the bristle insert has a semicircular section with a larger radius at its handle-side end in plan, from which substantially straight circumferential sections converge to a semicircular section with a smaller radius at the opposite end.
  • the toothbrush shown in FIG. 1 has a main part 1, which is formed in one piece from plastic and has a handle 2, a handle 3 and a head part 4.
  • a bristle insert 5, which carries bristles 6, is interchangeably received in the head part 4.
  • the bristle insert 5 is inserted into a holding recess 7 of the head part 4 in a snap-in manner.
  • the bristle insert 5 shown there with only indicated bristles 6 is elongated and extends from a wider, handle-side end 8 to a narrower, opposite end 9.
  • the bristle insert 5 which is made of plastic, is provided on its rear side with a push button 10 which, in inserted state protrudes through an opening 11 in the rear wall 12 of the head part 4.
  • the pusher button 10 and the associated opening 11 are offset from the longitudinal center of the holding recess 7 and are arranged near the handle-side end of the holding recess 7.
  • the bristle insert 5 - seen in plan view - tapers over most of its length to the end 9 facing away from the push button 10.
  • the peripheral surface 13 of the bristle insert 5 lies flat, ie with a smooth, uninterrupted surface on a likewise smooth, uninterrupted section 21 of the holding recess 7. This section 21 is not interrupted by locking grooves.
  • the button knob 10 projects with its preferably curved surface 22 beyond the outside of the head part 4, as can be seen from FIG. 1, so that the bristle insert 5 can be released by a relatively light pressure on the curved outer surface 22 of the button button 10 . Nevertheless, the bristle insert 5 is securely held in the head part 4 in the inserted state by the wedge or clamping action occurring between the surfaces 20 and 21. Instead, the button can also be designed so that it is flush with the outside of the headboard or overall protrudes above it.
  • the dimensions of the bristle insert 5 and the head part 4 are chosen so that the bristle insert 5 is supported with its push button 10 on the handle-side end 11a of the opening 11 of the rear wall 12, so that the bristle insert 5 is from there into the wedge-fit between the Surfaces 20 and 21 is pressed.
  • the longitudinal displacement of the bristle insert 5 required for this does not impair the latching action between the latching strips 16, 18 and the respectively assigned latching grooves 17 and 19.
  • the bristle insert 5 preferably has a semicircular section with a larger radius at its end 8 on the handle side. Essentially rectilinear circumferential sections run from this section converging to a semicircular section with a smaller radius at the opposite end 9. Deviating from this, another plan shape that tapers towards one end can also be selected.
  • the bristle insert 5 is fitted into the holding recess 7 of the head part in such a way that the end 8 bears in a form-fitting and play-free manner on the handle-side end of the inner wall 14.
  • the insertion takes place in such a way that the front locking bar 18 engages in the locking groove 19 first; then the end 8 is pivoted into the holding recess 7.

Abstract

The exchangeable brush insert (5) of the toothbrush can be fitted into an elongated holding recess (7) of a head part (4) connected with a bar and a grip piece. Connected with the brush insert is a press button (10), which extends through an opening (11) of the rear wall (12) of the holding recess. On both sides of the press button and on the face side of the end of the brush insert turned away from the press button, securing strips (16,18) project, which engage in grooves (17,19) in the inner wall (14) of the holding recess. The brush insert, over the major part of its length, narrows to the end (9) turned away from the press button.

Description

Die Erfindung betrifft eine Zahnbürste mit einem auswechselbaren, in einer länglichen Halteaussparung eines mit einem Stiel und einem Griffstück verbundenen Kopfteils einrastbaren Borsteneinsatz und einem mit dem Borsteneinsatz verbundenen Drückerknopf, der durch eine nahe dem griffseitigen Ende der Halteaussparung angeordneten Öffnung der Rückwand der Halteaussparung ragt, wobei beiderseits des Drückerknopfes und stirnseitig an dem dem Drückerknopf abgekehrten Ende des Borsteneinsatzes an dessen Umfangsfläche jeweils Rastleisten vorspringen, die in Rastnuten an der Innenwand der Halteaussparung eingreifen.The invention relates to a toothbrush with a replaceable bristle insert which can be snapped into an elongated holding recess of a head part connected to a handle and a handle, and a push button connected to the bristle insert which projects through an opening in the rear wall of the holding recess arranged near the handle-side end of the holding recess, wherein project on both sides of the pusher button and on the end face on the end of the bristle insert facing away from the pusher button on the circumferential surface of the latching bars, which engage in latching grooves on the inner wall of the holding recess.

Derartige, auch als Wechselkopf-Zahnbürsten bezeichnete Zahnbürsten sind in zahlreichen Ausführungsformen bekannt. Ihnen ist gemeinsam, daß der Borsteneinsatz auswechselbar ist, wobei die Verbindung zwischen dem Borsteneinsatz und dem Kopfteil durch eine Rastverbindung erfolgt. Zum einen soll der Borsteneinsatz bei der Benutzung der Zahnbürste fest im Kopfteil verankert sein, so daß er sich nicht unbeabsichtigt lösen kann. Zum anderen soll die Rastverbindung aber so leicht lösbar sein, daß der Borsteneinsatz in einfacher Weise und ohne Verwendung eines Werkzeugs ausgewechselt werden kann.Such toothbrushes, also referred to as interchangeable head toothbrushes, are known in numerous embodiments. They have in common that the bristle insert is interchangeable, the connection between the bristle insert and the head part being made by a snap connection. On the one hand, the bristle insert should be firmly anchored in the head part when using the toothbrush, so that it cannot accidentally become detached. On the other hand, the latching connection should be so easy to release that the bristle insert can be replaced in a simple manner and without using a tool.

Bei einer bekannten Zahnbürste (DE-GM 91 09 625) ist der Borsteneinsatz so gestaltet, daß seine Seitenwände in Richtung der Borsten konvergieren. Diese Seitenwände und die jeweils zugeordneten Innenwände der Halteaussparung sind eben und frei von Nuten ausgeführt. Die von Rastleisten bzw. Rastvorsprüngen und zugeordneten Rastnuten gebildeten Rastverbindungen sind jeweils an den beiden Enden des Borsteneinsatzes vorgesehen. Da diese Rastverbindung an beiden Enden des Borsteneinsatzes nahe an dessen borstenseitiger Außenfläche angreift, besteht bei einer Durchbiegung des Kopfteils die Gefahr, daß die Rastverbindung an einem Ende des Borsteneinsatzes ausklinkt und sich der Borsteneinsatz vom Kopfteil löst. Um dies zu vermeiden, muß insbesondere an der griffseitigen Rastverbindung eine verhältnismäßig große Hinterschneidung vorgesehen sein, um einen formschlüssigen Halteeingriff zu gewährleisten. Dies hat andererseits aber zur Folge, daß zum Lösen des Borsteneinsatzes eine verhältnismäßig starke Verformung und damit große Kraft erforderlich ist.In a known toothbrush (DE-GM 91 09 625) the bristle insert is designed so that its side walls converge in the direction of the bristles. These side walls and the associated inner walls of the holding recess are flat and free of grooves. The locking connections formed by locking strips or locking projections and assigned locking grooves are provided at both ends of the bristle insert. Since this latching connection acts on both ends of the bristle insert close to its bristle-side outer surface, there is a risk that the latching connection will disengage at one end of the bristle insert and the bristle insert will detach from the head part if the bristle insert bends. To avoid this, a relatively large undercut must be provided in particular on the handle-side latching connection in order to ensure a positive locking engagement. On the other hand, however, this has the consequence that a relatively strong deformation and thus great force is required to loosen the bristle insert.

Bei einer anderen bekannten Zahnbürste (DE-OS 30 38 895) sind die Rastleisten an den zueinander parallelen Seitenflächen des Borsteneinsatzes im Abstand zueinander angeordnet. Da die Umfangsfläche des Borsteneinsatzes am gesamten Umfang senkrecht zur borstenseitigen Grundfläche des Borsteneinsatzes verläuft, erfolgt die Verbindung zwischen dem Borsteneinsatz und dem Kopfteil ohne Klemmwirkung nur durch die an den Rastleisten aufgebrachten Rastkräfte.In another known toothbrush (DE-OS 30 38 895), the locking strips are arranged on the mutually parallel side surfaces of the bristle insert at a distance from one another. Since the circumferential surface of the bristle insert extends perpendicular to the bristle-side base surface of the bristle insert over the entire circumference, the connection between the bristle insert and the head part takes place without a clamping effect only by the latching forces applied to the latching strips.

Auch bei einer Zahnbürste der eingangs genannten Gattung (DE-PS 37 24 640) verläuft die Umfangsfläche des Borsteneinsatzes senkrecht zur borstenseitigen Grundfläche des Borsteneinsatzes, und die Verankerung des Borsteneinsatzes erfolgt ausschließlich durch die Halteleisten, die sich hierbei über einen wesentlichen Teil der Länge der zueinander parallelen Seitenflächen des Borsteneinsatzes erstrecken. Die die Rastleisten aufnehmende Rastnut erstreckt sich über den gesamten inneren Umfang der Halteaussparung wodurch die Berührungsfläche zwischen der Umfangsfläche des Borsteneinsatzes und der Halteaussparung weiter verringert wird.Even with a toothbrush of the type mentioned at the beginning (DE-PS 37 24 640), the peripheral surface of the bristle insert runs perpendicular to the bristle-side base surface of the bristle insert, and the bristle insert is anchored exclusively by the holding strips, which here are over a substantial part the length of the mutually parallel side surfaces of the bristle insert. The locking groove receiving the locking strips extends over the entire inner circumference of the holding recess, as a result of which the contact area between the peripheral surface of the bristle insert and the holding recess is further reduced.

Aufgabe der Erfindung ist es daher, eine Zahnbürste der eingangs genannten Gattung zu schaffen, bei der die Vorteile einer leichten Lösbarkeit des Borsteneinsatzes mit den Vorteilen einer im Betrieb sicheren und spielfreien Verbindung zwischen Borsteneinsatz und Kopfteil verbunden werden.The object of the invention is therefore to provide a toothbrush of the type mentioned in the introduction, in which the advantages of an easy releasability of the bristle insert are combined with the advantages of a connection between the bristle insert and the head part which is safe and free of play during operation.

Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß sich der Borsteneinsatz über den größten Teil seiner Länge zu dem dem Drückerknopf abgekehrten Ende verjüngt und in dem sich verjüngenden Bereich mit glatten, ununterbrochenen Abschnitten seiner Umfangsfläche flächig an glatten, ununterbrochenen Abschnitten der Innenwand der Halteaussparung anliegt, und daß die Rastnuten nur im Bereich der Rastleisten an der Innenwand der Halteaussparung angeordnet sind.This object is achieved in that the bristle insert tapers over most of its length to the end facing away from the push button and in the tapering area with smooth, uninterrupted sections of its peripheral surface lies flat against smooth, uninterrupted sections of the inner wall of the holding recess, and that the locking grooves are arranged only in the area of the locking strips on the inner wall of the holding recess.

Durch die sich zum kopfseitigen Ende hin verjüngende Grundrißgestalt des Borsteneinsatzes und der Halteaussparung wird eine Keil- oder Klemmwirkung erreicht, durch die der Borsteneinsatz sicher im Kopfteil gehalten wird. Diese Klemmwirkung tritt an verhältnismäßig großen, ununterbrochenen Flächenbereichen der Umfangsfläche des Borsteneinsatzes ein, so daß dieser auch bei einer Verformung des Kopfteils bei der Benutzung noch sicher gehalten wird.The tapered shape of the bristle insert tapering towards the head end and the holding recess result in a wedge or clamping effect by which the bristle insert is held securely in the head part. This clamping effect occurs on relatively large, uninterrupted surface areas of the peripheral surface of the bristle insert, so that it is still held securely in use even when the head part is deformed.

Vorzugsweise verlaufen die Umfangsfläche des Borsteneinsatzes und die Innenwand der Halteaussparung im wesentlichen senkrecht zur borstenseitigen Grundfläche des Borsteneinsatzes. Deshalb tritt die den Borsteneinsatz abstützende Keilwirkung nur in Längsrichtung des Borsteneinsatzes auf; das Lösen des Borsteneinsatzes wird dadurch nicht beeinträchtigt, zumal sich der Drückerknopf in demjenigen Bereich des Borsteneinsatzes befindet, in dem die Haltewirkung im wesentlichen nur durch die beiderseitigen Rastleisten verursacht wird.The peripheral surface of the bristle insert and the inner wall of the holding recess preferably run essentially perpendicular to the bristle-side base surface of the bristle insert. Therefore, the wedge effect supporting the bristle insert occurs only in the longitudinal direction of the bristle insert; the loosening of the bristle insert is not impaired by this, especially since the push button is located in the area of the bristle insert in which the holding effect is essentially only caused by the locking strips on both sides.

Gemäß einer bevorzugten Ausführungsform der Erfindung ist vorgesehen, daß sich der Borsteneinsatz mit seinem Drückerknopf am griffseitigen Ende der Öffnung der Rückwand abstützt. Dadurch wird der Borsteneinsatz in seiner Längsrichtung elastisch eingespannt, wobei die Abstützung einerseits am Drückerknopf und andererseits an den sich keilförmig verjüngenden Seitenflächen erfolgt. Da diese beiden Abstützbereiche in ausreichend großem Abstand zueinander liegen, wirkt sich die elastische Federung des dazwischen befindlichen Materials günstig auf die Verankerungswirkung aus. Mit anderen Worten der Borsteneinsatz wird von seinem den Drückerknopf aufweisenden Ende her in die Keilverbindung mit dem Kopfteil gedrückt. Die flächige, nicht durch Leisten oder Nuten unterbrochene Berührung zwischen dem Bürstenkopf und dem Kopfteil in dem sich verjüngenden Abschnitt bewirkt eine sichere Abstützung und Verbindung.According to a preferred embodiment of the invention it is provided that the bristle insert is supported with its push button on the handle-side end of the opening of the rear wall. As a result, the bristle insert is clamped elastically in its longitudinal direction, the support being provided on the one hand on the push button and on the other hand on the wedge-shaped tapering side surfaces. Since these two support areas are at a sufficiently large distance from one another, the elastic suspension of the material located between them has a favorable effect on the anchoring effect. In other words, the bristle insert is pressed into the wedge connection with the head part from its end having the pusher button. The flat contact between the brush head and the head part in the tapered section, which is not interrupted by strips or grooves, provides secure support and connection.

Gemäß einer vorteilhaften Ausführungsform der Verbindung ist vorgesehen, daß der Borsteneinsatz im Grundriß einen halbkreisförmigen Abschnitt mit größerem Radius an seinem griffseitigen Ende aufweist, von dem im wesentlichen geradlinige Umfangsabschnitte zu einem halbkreisförmigem Abschnitt mit kleinerem Radius am entgegengesetzten Ende konvergieren.According to an advantageous embodiment of the connection, it is provided that the bristle insert has a semicircular section with a larger radius at its handle-side end in plan, from which substantially straight circumferential sections converge to a semicircular section with a smaller radius at the opposite end.

Nachfolgend wird ein Ausführungsbeispiel der Erfindung näher erläutert, das in der Zeichnung dargestellt ist. Es zeigt:

  • Fig. 1 eine Zahnbürste in einer Seitenansicht,
  • Fig. 2 eine Ansicht der Zahnbürste nach Fig. 1 in Richtung des Pfeiles II, jedoch mit abgenommenem Borsteneinsatz,
  • Fig. 3 einen vergrößerten Teil-Längsschnitt durch das Kopfteil der Zahnbürste nach Fig. 1 mit herausgenommenem Borsteneinsatz,
  • Fig. 4 eine Draufsicht auf den Borsteneinsatz in Richtung des Pfeiles IV in Fig. 3 und
  • Fig. 5 eine Stirnansicht des Borsteneinsatzes in Richtung des Pfeiles V in Fig. 4.
An exemplary embodiment of the invention is illustrated below, which is shown in the drawing. It shows:
  • 1 is a toothbrush in a side view,
  • 2 is a view of the toothbrush of FIG. 1 in the direction of arrow II, but with the bristle insert removed,
  • 3 shows an enlarged partial longitudinal section through the head part of the toothbrush according to FIG. 1 with the bristle insert removed,
  • Fig. 4 is a plan view of the bristle insert in the direction of arrow IV in Fig. 3 and
  • 5 shows an end view of the bristle insert in the direction of arrow V in FIG. 4.

Die in Fig. 1 gezeigte Zahnbürste weist ein Hauptteil 1 auf, das einstückig aus Kunststoff geformt ist und ein Griffstück 2, einen Stiel 3 und eine Kopfteil 4 aufweist. Im Kopfteil 4 ist ein Borsteneinsatz 5 auswechselbar aufgenommen, der Borsten 6 trägt. Der Borsteneinsatz 5 ist in eine Halteaussparung 7 des Kopfteils 4 einrastend eingesetzt.The toothbrush shown in FIG. 1 has a main part 1, which is formed in one piece from plastic and has a handle 2, a handle 3 and a head part 4. A bristle insert 5, which carries bristles 6, is interchangeably received in the head part 4. The bristle insert 5 is inserted into a holding recess 7 of the head part 4 in a snap-in manner.

Wie man in Einzelheiten in den Fig. 3-5 erkennt, ist der dort mit nur angedeuteten Borsten 6 dargestellte Borsteneinsatz 5 länglich ausgeführt und erstreckt sich von einem breiteren, griffseitigen Ende 8 zu einem schmaleren, entgegengesetzten Ende 9.As can be seen in detail in FIGS. 3-5, the bristle insert 5 shown there with only indicated bristles 6 is elongated and extends from a wider, handle-side end 8 to a narrower, opposite end 9.

Der aus Kunststoff bestehende Borsteneinsatz 5 ist an seiner Rückseite mit einem Drückerknopf 10 versehen, der im eingesetzten Zustand durch eine Öffnung 11 in der Rückwand 12 des Kopfteils 4 ragt. Der Drückerknopf 10 und die zugeordnete Öffnung 11 sind gegenüber der Längsmitte der Halteaussparung 7 versetzt und sind nahe dem griffseitigen Ende der Halteaussparung 7 angeordnet.The bristle insert 5, which is made of plastic, is provided on its rear side with a push button 10 which, in inserted state protrudes through an opening 11 in the rear wall 12 of the head part 4. The pusher button 10 and the associated opening 11 are offset from the longitudinal center of the holding recess 7 and are arranged near the handle-side end of the holding recess 7.

Aus der Umfangsfläche 13 des Borsteneinsatzes 5, die ebenso wie die zugeordnete Innenwand 14 der Halteaussparung 7 im wesentlichen senkrecht zur borstenseitigen Grundfläche 15 des Borsteneinsatzes 5 verläuft, springen beiderseits des Drückerknopfes 10 Rastleisten 16 vor, die in gegenüberliegende Rastnuten 17 der Innenwand 14 der Rastaussparung 7 eingreifen Eine stirnseitige Rastleiste 18 an dem dem Drückerknopf 10 abgekehrten Ende des Borsteneinsatzes 5 greift in eine dort in der Innenwand 14 der Halteaussparung 7 vorgesehene Rastnut 19.From the peripheral surface 13 of the bristle insert 5, which, like the associated inner wall 14 of the holding recess 7, runs essentially perpendicular to the bristle-side base surface 15 of the bristle insert 5, snap bars 16 protrude on both sides of the pusher button 10, which engage in opposite latching grooves 17 of the inner wall 14 of the latch recess 7 engage A front locking bar 18 on the end of the bristle insert 5 facing away from the push button 10 engages in a locking groove 19 provided there in the inner wall 14 of the holding recess 7.

Wie man besonders deutlich aus Fig. 4 erkennt, verjüngt sich der Borsteneinsatz 5 - im Grundriß gesehen - über den größten Teil seiner Länge zu dem dem Drückerknopf 10 abgekehrten Ende 9. In dem sich verjüngenden Bereich 20 liegt die Umfangsfläche 13 des Borsteneinsatzes 5 flächig, d.h. mit einer glatten, ununterbrochenen Fläche an einem ebenfalls glatten, ununterbrochenen Abschnitt 21 der Halteaussparung 7 an. Dieser Abschnitt 21 ist auch nicht durch Rastnuten unterbrochen.As can be seen particularly clearly from FIG. 4, the bristle insert 5 - seen in plan view - tapers over most of its length to the end 9 facing away from the push button 10. In the tapering region 20, the peripheral surface 13 of the bristle insert 5 lies flat, ie with a smooth, uninterrupted surface on a likewise smooth, uninterrupted section 21 of the holding recess 7. This section 21 is not interrupted by locking grooves.

Im eingesetzten Zustand ragt der Drückernopf 10 mit seiner vorzugsweise gewölbten Oberfläche 22 über die Außenseite des Kopfteils 4 hinaus, wie man aus Fig. 1 erkennt, so daß der Borsteneinsatz 5 durch einen verhältnismäßig leichten Druck auf die gewölbte Außenfläche 22 des Drückerknopfes 10 gelöst werden kann. Gleichwohl ist der Borsteneinsatz 5 im eingesetzten Zustand durch die zwischen den Flächen 20 und 21 auftretende Keil- bzw. Klemmwirkung sicher im Kopfteil 4 gehalten. Stattdessen kann der Drückerknopf auch so ausgeführt sein, daß er bündig mit der Außenseite des Kopfteils abschließt oder insgesamt über diese vorsteht.In the inserted state, the button knob 10 projects with its preferably curved surface 22 beyond the outside of the head part 4, as can be seen from FIG. 1, so that the bristle insert 5 can be released by a relatively light pressure on the curved outer surface 22 of the button button 10 . Nevertheless, the bristle insert 5 is securely held in the head part 4 in the inserted state by the wedge or clamping action occurring between the surfaces 20 and 21. Instead, the button can also be designed so that it is flush with the outside of the headboard or overall protrudes above it.

Vorzugsweise sind die Abmessungen des Borsteneinsatzes 5 und des Kopfteils 4 so gewählt, daß sich der Borsteneinsatz 5 mit seinem Drückerknopf 10 am griffseitigen Ende 11a der Öffnung 11 der Rückwand 12 abstützt, so daß der Borsteneinsatz 5 von dort her in den Keil-Klemmsitz zwischen den Flächen 20 und 21 gedrückt wird. Die hierfür erforderliche Längsverschiebung des Borsteneinsatzes 5 beeinträchtigt die Rastwirkung zwischen den Rastleisten 16, 18 und den jeweils zugeordneten Rastnuten 17 bzw. 19 nicht. Wie man aus Fig. 4 erkennt, weist der Borsteneinsatz 5 im Grundriß vorzugsweise einen halbkreisförmigen Abschnitt mit größerem Radius an seinem griffseitigen Ende 8 auf. Von diesem Abschnitt verlaufen im wesentlichen geradlinige Umfangsabschnitte konvergierend zu einem halbkreisförmigem Abschnitt mit kleinerem Radius am entgegengesetzten Ende 9. Abweichend hiervon kann auch eine andere, sich zum einen Ende hin verjüngende Grundrißform gewählt werden.Preferably, the dimensions of the bristle insert 5 and the head part 4 are chosen so that the bristle insert 5 is supported with its push button 10 on the handle-side end 11a of the opening 11 of the rear wall 12, so that the bristle insert 5 is from there into the wedge-fit between the Surfaces 20 and 21 is pressed. The longitudinal displacement of the bristle insert 5 required for this does not impair the latching action between the latching strips 16, 18 and the respectively assigned latching grooves 17 and 19. As can be seen from FIG. 4, the bristle insert 5 preferably has a semicircular section with a larger radius at its end 8 on the handle side. Essentially rectilinear circumferential sections run from this section converging to a semicircular section with a smaller radius at the opposite end 9. Deviating from this, another plan shape that tapers towards one end can also be selected.

Der Borsteneinsatz 5 ist so in die Halteaussparung 7 des Kopfteils eingepaßt, daß das Ende 8 formschlüssig und spielfrei am griffseitigen Ende der Innenwand 14 anliegt. Das Einsetzen erfolgt in der Weise, daß zuerst die stirnseitige Rastleiste 18 in die Rastnut 19 eingreift; sodann wird das Ende 8 in die Halteaussparung 7 eingeschwenkt.The bristle insert 5 is fitted into the holding recess 7 of the head part in such a way that the end 8 bears in a form-fitting and play-free manner on the handle-side end of the inner wall 14. The insertion takes place in such a way that the front locking bar 18 engages in the locking groove 19 first; then the end 8 is pivoted into the holding recess 7.

Claims (4)

Zahnbürste mit einem auswechselbaren, in einer länglichen Halteaussparung (7) eines mit einem Stiel (3) und einem Griffstück (2) verbundenen Kopfteils (4) einrastbaren Borsteneinsatz (5) und einem mit dem Borsteneinsatz (5) verbundenen Drückerknopf (10), der durch eine nahe dem griffseitigen Ende der Halteaussparung (7) angeordneten Öffnung (11) der Rückwand (12) der Halteaussparung (7) ragt, wobei beiderseits des Drückerknopfes (10) und stirnseitig an dem dem Drückerknopf (10) abgekehrten Ende des Borsteneinsatzes (5) an dessen Umfangsfläche (13) jeweils Rastleisten (16, 18) vorspringen, die in Rastnuten (17, 19) an der Innenwand (14) der Halteaussparung (7) eingreifen, dadurch gekennzeichnet, daß sich der Borsteneinsatz (5) über den größten Teil seiner Länge zu dem dem Drückerknopf (10) abgekehrten Ende (9) verjüngt und in dem sich verjüngenden Bereich mit glatten, untunterbrochenen Abschnitten (20) seiner Umfangsfläche flächig an glatten, ununterbrochenen Abschnitten (21) der Innenwand (14) der Halteaussparung (7) anliegt, und daß die Rastnuten (17, 19) nur im Bereich der Rastleisten (16, 18) an der Innenwand (14) der Halteaussparung (7) angeordnet sind.Toothbrush with a replaceable bristle insert (5) which can be latched into an elongated holding recess (7) of a head part (4) connected to a handle (3) and a handle (2) and a push button (10) connected to the bristle insert (5) protrudes through an opening (11) of the rear wall (12) of the holding recess (7) arranged near the handle-side end of the holding recess (7), the bristle insert (5 ) on its peripheral surface (13) each protrude locking strips (16, 18) which engage in locking grooves (17, 19) on the inner wall (14) of the holding recess (7), characterized in that the bristle insert (5) extends over the largest Part of its length tapers to the end (9) facing away from the push button (10) and flat in the tapering area with smooth, uninterrupted sections (20) of its peripheral surface on smooth, uninterrupted sections ten (21) of the inner wall (14) of the retaining recess (7), and that the locking grooves (17, 19) are arranged only in the region of the locking strips (16, 18) on the inner wall (14) of the retaining recess (7). Zahnbürste nach Anspruch 1, dadurch gekennzeichnet, daß die Umfangsfläche (13) des Borsteneinsatzes (5) und die Innenwand (14) der Halteaussparung (7) im wesentlichen senkrecht zur borstenseitigen Grundfläche (15) des Borsteneinsatzes (5) verlaufen.Toothbrush according to claim 1, characterized in that the peripheral surface (13) of the bristle insert (5) and the inner wall (14) of the holding recess (7) run substantially perpendicular to the bristle-side base surface (15) of the bristle insert (5). Zahnbürste nach Anspruch 1, dadurch gekennzeichnet, daß sich der Borsteneinsatz (5) mit seinem Drückerknopf (10) am griffseitigen Ende (11a) der Öffnung (11) der Rückwand (12) abstützt.Toothbrush according to claim 1, characterized in that the bristle insert (5) is supported with its push button (10) on the handle-side end (11a) of the opening (11) of the rear wall (12). Zahnbürste nach Anspruch 1, dadurch gekennzeichnet, daß der Borsteneinsatz (5) im Grundriß einen halbkreisförmigen Abschnitt mit größerem Radius an seinem griffseitigen Ende (8) aufweist, von dem im wesentlichen geradlinige Umfangsabschnitte zu einem halbkreisförmigem Abschnitt mit kleinerem Radius am entgegengesetzten Ende (9) konvergieren.Toothbrush according to Claim 1, characterized in that the bristle insert (5) has a semicircular section with a larger radius at its handle-side end (8) in plan, from which substantially straight circumferential sections to a semicircular section with a smaller radius at the opposite end (9) converge.
EP95109184A 1994-09-28 1995-06-14 Toothbrush Expired - Lifetime EP0704179B1 (en)

Applications Claiming Priority (2)

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DE4434617A DE4434617A1 (en) 1994-09-28 1994-09-28 toothbrush
DE4434617 1994-09-28

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EP0704179A1 true EP0704179A1 (en) 1996-04-03
EP0704179B1 EP0704179B1 (en) 1998-09-16

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US (1) US5555590A (en)
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CA (1) CA2159289A1 (en)
DE (2) DE4434617A1 (en)
ES (1) ES2123860T3 (en)

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US7941886B2 (en) 2003-09-19 2011-05-17 Braun Gmbh Toothbrushes
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US7975344B2 (en) 2003-03-14 2011-07-12 The Gillette Company Toothbrush head
US8156599B2 (en) 2007-10-03 2012-04-17 Colgate-Palmolive Company Oral care implement having a head insert
US8332982B2 (en) 2004-04-23 2012-12-18 The Gillette Company Vibrating toothbrush
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FR3110378A1 (en) 2020-05-20 2021-11-26 My Boo Company toothbrush
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USD671746S1 (en) * 2010-05-05 2012-12-04 Colgate-Palmolive Company Head portion of a toothbrush
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WO1998005239A1 (en) 1996-08-02 1998-02-12 The Procter & Gamble Company A toothbrush
US7458647B2 (en) 2001-12-28 2008-12-02 Trisa Holding Ag Toothbrush and process for producing such a toothbrush
US7445295B2 (en) 2001-12-28 2008-11-04 Trisa Holding Ag Toothbrush and process for producing such a toothbrush
US7354112B2 (en) 2001-12-28 2008-04-08 Trisa Holding Ag Toothbrush and process for producing such a toothbrush
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US7174596B2 (en) 2001-12-28 2007-02-13 Trisa Holding Ag Toothbrush and process for producing such a toothbrush
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USRE47468E1 (en) 2001-12-28 2019-07-02 Trisa Holding Ag Toothbrush and process for producing such a toothbrush
US7992247B2 (en) 2002-12-19 2011-08-09 Trisa Holding Ag Toothbrush and process for producing the same
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US10405642B2 (en) 2002-12-19 2019-09-10 Trisa Holding Ag Toothbrush and process for producing the same
US6988777B2 (en) * 2002-12-19 2006-01-24 Trisa Holding Ag Process for producing a toothbrush
US9232852B2 (en) 2002-12-19 2016-01-12 Trisa Holding Ag Toothbrush and process for producing the same
US7774891B2 (en) 2002-12-19 2010-08-17 Trisa Holding Ag Toothbrush and process for producing the same
US7162767B2 (en) 2002-12-19 2007-01-16 Trisa Holding Ag Toothbrush and process for producing the same
US8613123B2 (en) 2002-12-19 2013-12-24 Trisa Holding Ag Toothbrush and process for producing the same
US8418306B2 (en) 2002-12-19 2013-04-16 Trisa Holding Ag Toothbrush and process for producing the same
US9220335B2 (en) 2003-03-14 2015-12-29 The Gillette Company Toothbrush head
US8528148B2 (en) 2003-03-14 2013-09-10 The Gillette Company Toothbrush head
US7975344B2 (en) 2003-03-14 2011-07-12 The Gillette Company Toothbrush head
US9204949B2 (en) 2003-09-19 2015-12-08 The Gillettte Company Toothbrushes
US8621698B2 (en) 2003-09-19 2014-01-07 Braun Gmbh Toothbrushes
US7941886B2 (en) 2003-09-19 2011-05-17 Braun Gmbh Toothbrushes
US8332982B2 (en) 2004-04-23 2012-12-18 The Gillette Company Vibrating toothbrush
US7930792B2 (en) 2007-01-19 2011-04-26 Colgate-Palmolive Company Oral care implement
US8156599B2 (en) 2007-10-03 2012-04-17 Colgate-Palmolive Company Oral care implement having a head insert
US8864241B2 (en) 2007-10-03 2014-10-21 Colgate-Palmolive Company Oral care implement having a head insert
US8695146B2 (en) 2007-10-03 2014-04-15 Colgate-Palmolve Company Oral care implement having a head insert
US8533889B2 (en) 2007-10-03 2013-09-17 Colgate-Palmolive Company Oral care implement having a head insert
WO2011072865A1 (en) * 2009-12-17 2011-06-23 Gb Boucherie Nv Methods of combining brush head plates with brush bodies
CN103099425A (en) * 2011-11-15 2013-05-15 常熟市永祥机电有限公司 Brush with handle
US11219303B2 (en) 2016-04-20 2022-01-11 Trisa Holding Ag Brush product and method for the production thereof
FR3110378A1 (en) 2020-05-20 2021-11-26 My Boo Company toothbrush

Also Published As

Publication number Publication date
DE4434617A1 (en) 1996-04-04
US5555590A (en) 1996-09-17
EP0704179B1 (en) 1998-09-16
DE59503597D1 (en) 1998-10-22
ES2123860T3 (en) 1999-01-16
CA2159289A1 (en) 1996-03-29

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