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EP0199849B1 - Brosse à dents à tête amovible - Google Patents

Brosse à dents à tête amovible Download PDF

Info

Publication number
EP0199849B1
EP0199849B1 EP85115213A EP85115213A EP0199849B1 EP 0199849 B1 EP0199849 B1 EP 0199849B1 EP 85115213 A EP85115213 A EP 85115213A EP 85115213 A EP85115213 A EP 85115213A EP 0199849 B1 EP0199849 B1 EP 0199849B1
Authority
EP
European Patent Office
Prior art keywords
projection
plug
toothbrush
engaging
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.)
Expired
Application number
EP85115213A
Other languages
German (de)
English (en)
Other versions
EP0199849A1 (fr
Inventor
Fritz Rueb
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.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to AT85115213T priority Critical patent/ATE48075T1/de
Publication of EP0199849A1 publication Critical patent/EP0199849A1/fr
Application granted granted Critical
Publication of EP0199849B1 publication Critical patent/EP0199849B1/fr
Expired 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
    • A46B7/00—Bristle carriers arranged in the brush body
    • A46B7/04—Bristle carriers arranged in the brush body interchangeably removable bristle carriers
    • A46B7/044—Sliding connections for 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 handle and an interchangeably attached bristle part which, below the attachment level of the bristles, has a cavity which is closed on all sides in cross section and has an insertion opening on one end face for inserting a plug part projecting on the end face of the handle, and also a latching device for latching the Has plug part with the bristle part, which locking device consists of a locking recess and a projection fitting into this.
  • a toothbrush of the type mentioned at the outset is known from EP-A-0 083 787.
  • a metal plug-in part is partially injected onto a plastic handle in order to be able to transmit the forces occurring when using the toothbrush with sufficient certainty.
  • the bristle part is fixed to the plug-in part either by frictional or clamping engagement or by means of the latching device mentioned at the outset, which is realized in that the protruding plug-in part has the latching recess, while in the interior of the cavity a protrusion entering this recess is provided when plugged together.
  • This has the sensitive disadvantage that when the plug-in part is inserted, the cavity, which is closed on all sides in cross section, would have to be expanded in order to carry out the latching.
  • a dovetail-shaped design of a coupling between the handle and exchangeable bristle part in a toothbrush is known from DE-GM 84 28 969 or GB-A-20 44 089, the position of use being additionally to be fixed by a point detent.
  • the entire bristle part is relatively weak due to its U-shaped cross section, so that slipping off the dovetail holder transversely to its extension cannot be ruled out, at least when the toothbrush is used vigorously. In addition, even a point-like catch cannot transmit large forces.
  • the latching recess is arranged at the insertion opening of the cavity of the bristle part and is open at the edge and has at least one undercut at the side opposite to the insertion direction and that the projection that fits the undercut positively on the one in the functional position in the region of the latching recess
  • Area of the plug-in part of the handle is arranged so that the projection on the plug-in part widens from its front end in the insertion direction and has at least one side wedge surface running at an acute angle to the insertion direction up to a greatest width and a locking surface which leads back more steeply from there, which fits behind the undercut of the locking recess, and that the positive connection between the projection and the locking recess runs along the entire contour of these two parts which can be locked together.
  • the latching recess can namely be continuous and open transversely to the direction of insertion of the plug-in part and the projection from the inner cavity through the entire area of the wall of the cavity to the outside, which results in the aforementioned U cross-section in the area of the latching recess.
  • the invention allows a relatively easy latching, in which the projection is pushed through the narrowest point of the latching recess, but due to the steep undercut makes the latching so difficult that it does not happen by itself, but when the bristle part is occasionally replaced, it does so as is possible before.
  • the angles of the plug-in part and the locking surface as well as the sizes of these surfaces can be adjusted and designed as necessary so that with normal forces when using a toothbrush, a detachment of the locking connection is excluded with certainty, while on the other hand the deliberate removal of the bristle part from the plug-in part is possible.
  • edge recess is not only open at the edge of the insertion opening of the cavity, but rather can be understood as a breakthrough of the wall of the cavity. This allows their edges with the undercut to yield slightly when the plug-in part snaps in and out, without the cavity itself having to be widened, so that on the one hand the corresponding surfaces engage in a form-fitting manner, but on the other hand can be guided past one another and the desired locking forces are generated without the bristle part and in particular its cavity is damaged by being placed on the handle.
  • the locking recess is provided with two undercuts facing away from one another and the projection of the plug-in part has two wedge surfaces that are at an acute angle to one another and two locking surfaces that are at an obtuse angle to one another and adjoin the wedge surfaces in the insertion direction, which form-fit in the two undercuts fit.
  • the wedge surfaces of the projection and the corresponding counter surfaces of the locking recess as well as the two undercuts and the matching locking surfaces can be arranged symmetrically to a longitudinal center plane oriented in the direction of insertion. This results in a symmetrical application of force and a symmetrical distribution of force when inserting or removing and above all when using the toothbrush.
  • the front end of the projection in the insertion direction can be rounded, which facilitates the insertion into the locking recess and also the manufacture.
  • the latching recess can preferably be arranged on the side of the bristle part from which the bristles protrude. Since bending forces that occur during use on the coupling between the bristle part and the handle occur counter to the direction of the bristles in which they protrude from the bristle part, there is good support for the plug-in part on the side of the cavity of the bristle part opposite the latching recess, and it is particularly useful It is advantageous if the cavity and the insertion opening on this side extend continuously to the end of the plug-in part and the end face of the handle. The moment occurring with such loads is then recorded over the greatest possible length of the plug-in part also below the locking area. In addition, joints or cuts between the handle and the bristle part are avoided.
  • the latching projection of the handle can be flush with its surface extending transversely to the latching surfaces with the surface of the wall of the bristle part which it penetrates. This creates a smooth connection, which prevents the risk of injury.
  • the plug-in part of the handle can be made in one piece with the latching projection and preferably also with the handle, in particular from plastic, preferably by injection molding. Against By producing the handle and the plug-in part and / or the projection from different materials, this results in inexpensive production and good power transmission.
  • the surfaces of the projection and the bristle part that are adjacent to one another in the use position can be optically different, preferably have different colors. This improves the visual control as to whether the latching connection has really come about.
  • the connection of these two parts can be made with sufficient security and strength, so that a correspondingly high quality reusable Handle is profitable, which can be connected with bristle parts of any quality. Furthermore, it is possible for the user to alternately use harder and softer bristles on corresponding different bristle parts.
  • the bristle part 3 has a cross section which is closed on all sides and has an insertion opening on the end face 5 6 provided cavity 7 into which a plug-in part 8 protruding from the end of the handle 2 according to FIGS. 3 and 5 for connecting the two parts 2 and 3 according to FIG. 1 can be inserted.
  • the cavity 7 at the insertion opening 6 has a recess 10 which is open at the edge and has undercuts 9 which are lateral to the insertion direction.
  • the handle 2 on the region of the plug-in part 8 located in the area of this latching recess 10 in the functional position according to FIG. 1 has a projection 11 which fits into the undercuts 9 in a form-fitting manner.
  • the locking recess 10 transversely to the direction of insertion of the plug part 8 and the projection 11 from the inner cavity 7 through the entire wall area of the cavity through to the outside and is open.
  • the latching recess 10 thus practically represents an indentation on the corresponding wall 12 delimiting the cavity 7.
  • the projection 11 widens from its front end 13 in the direction of insertion and has lateral wedge surfaces 14 which extend at an acute angle to the direction of insertion and which extend to a maximum width 15. Furthermore, the projection 11 has locking surfaces 16, each steeper from the greatest width 15, which fit behind the undercuts 9 of the locking recess 10 in the insertion direction, as shown in FIG. 1. The remaining edges 17 of the recess 10 correspond to the contour of the projection 11 and in particular the course of the wedge surfaces 14. This results in a positive connection between the projection 11 and the recess 10, which runs practically along the entire contour of these two parts which can be locked together.
  • the wedge surfaces 14 of the projection 11 and the corresponding counter surfaces 17 of the locking recess 10 and the two undercuts 9 and the matching locking surfaces 16 of the projection 11 are arranged in the exemplary embodiment symmetrically to a longitudinal center plane oriented in the insertion direction and running perpendicular to the plane of the drawing in FIG. 1. This results in any pivoting or up and down movements of the toothbrush 1 in each case a symmetrical application of force and a consistently good power transmission from the bristle part 3 to the handle 2 and vice versa.
  • the front end 13 of the projection 11 in the insertion direction is rounded, as is the corresponding part 18 of the latching recess 10 which projects furthest into the bristle part 3 in the insertion direction.
  • the locking recess 10 is arranged on the side of the bristle part 3, from which the bristles 4 protrude.
  • bending forces occurring during brushing between bristle part 3 and handle 2 and a moment resulting therefrom can be well absorbed by wall 19 of cavity 7 opposite latching recess 10. Since the wall 19 is continuous, it can extend as far as the handle-side end 20 of the plug-in part 8 and the end face 21 of the handle 2, so that joints which are unfavorable for use are avoided at this point.
  • the latching projection 11 is flush on its surface 22 extending transversely to the latching surfaces 16 with the surface 23 of the wall 12 of the cavity 7 through which it passes, so that the surface and outside of the toothbrush 1 are smooth in the coupling area as well.
  • the bristle part 3 can from the Darge in Fig. 1 Set position to be solved by a pulling force to be applied by the user, although the relatively obtuse-angled latching surfaces 16 produce a connection on the undercuts 9 that is sufficiently firm for use, because with a correspondingly large loosening force due to the slight inclination, the largest constriction of the latching recess 10 can nevertheless be spread somewhat apart .

Landscapes

  • Brushes (AREA)

Claims (11)

1. Brosse à dents avec une poignée et une tête fixée à la poignée de manière amovible, qui présente, en dessous du plan de fixation des poils, une cavité fermée de tous côtés en coupe transversale et munie sur un côté frontal d'une ouverture d'emmanchement, pour l'emmanchement d'une partie emmanchable prévue du côté frontal sur la poignée, et qui présente également un dispositif d'enclenchement pour l'enclenchement de la partie emmanchable avec la tête, dispositif qui est constitué d'un évidement d'enclenchement et d'une partie en saillie s'adaptant dans cet évidement, caractérisée en ce que l'évidement d'enclenchement (10) est disposé sur l'ouverture d'emmanchement (6) de la cavité (7) de la tête (3), est ouvert sur ses bords, et présente au moins une contre-dépouille (9) latérale par rapport au sens d'emmanchement, et en ce que la partie en saillie (11), qui s'adapte par complémentarité de forme avec la contre-dépouille (9), est disposée sur la région de la partie emmanchable (8) de la poignée (2) qui, en position fonctionnelle, se trouve dans la région de l'évidement d'enclenchement (10), en ce que la partie en saillie (11) de la partie emmanchable (8) s'élargit à partir de son extrémité avant (13) dans le sens d'emmanchement, et possède au moins une face de serrage latérale (14) s'étendant sous un angle aigu par rapport au sens d'emmanchement jusqu'à une largeur maximale (15), et une face d'enclenchement à pente plus raide (16) qui s'étend en retrait depuis la largeur maximale et qui s'adapte derrière la contre-dépouille (9) de l'évidement d'enclenchement (10), et en ce que l'assemblage par complémentarité de forme entre la partie en saillie (11) et l'évidement d'enclenchement (10) s'étend sur la totalité de contour de ces deux pièces mutuellement enclenchables.
2. Brosse à dents selon la revendication 1, caractérisée en ce que l'évidement d'enclenchement (10), partant de la cavité intérieure (7), traverse, perpendiculairement au sens d'emmanchement de la partie emmanchable (8) et de la partie en saillie (11), la totalité de la région de la paroi (12) de la cavité (7), jusqu'à l'extérieur, et est ouvert.
3. Brosse à dents selon la revendication 1 ou 2, caractérisée en ce que l'évidement d'enclenchement (10) présente deux contre-dépouilles (9) tournées dans des directions opposées, et en ce que la partie en saillie (11) de la partie emmanchable (8) présente deux faces de serrage (14) qui forment entre elles un angle aigu, et deux faces d'enclenchement (16) qui forment entre elles un angle obtus.
4. Brosse à dents selon la revendication 1 ou 3, caractérisée en ce que les faces de serrage (14) de la partie en saillie (11) et les faces complémentaires (17) de l'évidement d'enclenchement (10) qui correspondent à ces faces de serrage, de même que les deux contre-dépouilles (9) et les faces d'enclenchement correspondantes (16), sont disposées symétriquement par rapport à un plan médian longitudinal orienté dans le sens d'emmanchement.
5. Brosse à dents selon l'une des revendications 1 à 4, caractérisée en ce que l'extrémité avant (13), dans le sens d'emmanchement, de la partie en saillie (11) est arrondie.
6. Brosse à dents selon l'une des revendications 1 à 5, caractérisée en ce que l'évidement d'enclenchement (10) est disposé sur le côté de la tête (3) duquel dépassent les poils (4).
7. Brosse à dents selon l'une des revendications 1 à 6, caractérisée en ce que la paroi (19) de la cavité (7) qui est opposée à l'évidement d'enclenchement (10), s'étend de manière ininterrompue jusqu'à l'extrémité (20) de la partie emmanchable (8) et jusqu'au côté frontal (21) de la poignée (2) duquel la partie emmanchable (8) part en saillie.
8. Brosse à dents selon l'une des revendications 3 à 7, caractérisée en ce que la partie d'enclenchement en saillie (11) est, sur sa surface (22) s'étendant perpendiculairement aux faces d'enclenchement (16), en affleurement avec la surface (23) de la paroi (12) de la cavité (7) que la partie (11) traverse.
9. Brosse à dents selon l'une des revendications 1 à 8, caractérisée en ce que la partie emmanchable (8) de la poignée (2) est réalisée d'une seule pièce avec la partie d'enclenchement en saillie (11) et de préférence également avec la poignée (2), notamment en matière plastique, et de préférence par injection.
10. Brosse à dents selon l'une des revendications 3 à 9, caractérisée en ce que les faces de serrage latérales (14) et/ou les faces d'enclenchement (16) de la partie en saillie (11) sont disposées perpendiculairement au côté supérieur de la partie emmanchable (8).
11. Brosse à dents selon l'une des revendications 1 à 10, caractérisée en ce qu'au moins dans la région de l'ouverture d'enclenchement (10) et de la partie d'enclenchement en saillie (11), les faces (22 et 23) de la partie en saillie et de la tête, qui en position d'utilisation sont voisines l'une de l'autre, sont visuellement distinctes, en étant de préférence de couleurs différentes.
EP85115213A 1985-03-26 1985-11-30 Brosse à dents à tête amovible Expired EP0199849B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT85115213T ATE48075T1 (de) 1985-03-26 1985-11-30 Zahnbuerste mit auswechselbarem borstenteil.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19853510909 DE3510909A1 (de) 1985-03-26 1985-03-26 Zahnbuerste mit auswechselbarem borstenteil
DE3510909 1985-03-26

Publications (2)

Publication Number Publication Date
EP0199849A1 EP0199849A1 (fr) 1986-11-05
EP0199849B1 true EP0199849B1 (fr) 1989-11-23

Family

ID=6266361

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85115213A Expired EP0199849B1 (fr) 1985-03-26 1985-11-30 Brosse à dents à tête amovible

Country Status (6)

Country Link
US (1) US4683604A (fr)
EP (1) EP0199849B1 (fr)
JP (1) JPS61226003A (fr)
AT (1) ATE48075T1 (fr)
CA (1) CA1266357A (fr)
DE (2) DE3510909A1 (fr)

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DE102006060133A1 (de) * 2006-12-18 2008-06-19 Braun Gmbh Zahnbürste sowie Aufsatzteil hierfür
DE102007029973A1 (de) 2007-06-28 2009-01-08 Braun Gmbh Zahnbürste
US8448287B2 (en) 2010-10-22 2013-05-28 Mcneil-Ppc, Inc. Replaceable toothbrush head
US9301821B2 (en) 2011-07-12 2016-04-05 Colgate-Palmolive Company Refill head for powered oral care implement that produces vibratory and oscillatory motion
JP2013135750A (ja) 2011-12-28 2013-07-11 Omron Healthcare Co Ltd 電動歯ブラシおよび替えブラシ
US11089862B2 (en) * 2013-11-13 2021-08-17 The Gillette Company Llc Oral-care implement and method for manufacturing the same
ES2972150T3 (es) * 2013-11-13 2024-06-11 Gillette Co Llc Utensilio para cuidado bucal y método para fabricar el mismo
CN106419048A (zh) * 2016-02-04 2017-02-22 上海慎兴制刷有限公司 牙刷刷头替换结构
CN107095439B (zh) * 2017-05-15 2018-08-03 杨益滔 一种多用途牙刷
KR102182124B1 (ko) * 2019-07-29 2020-11-23 교촌 에프 앤 비(주) 무게중심 조절이 가능한 소스용 붓
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EP4179918A1 (fr) * 2021-11-15 2023-05-17 Julien Luc Bernard Tete de brosse a dents amovible et brosse a dents comportant une telle tete

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EP0083787A3 (fr) * 1982-01-13 1984-04-25 Ludwig Lang Brosse à dents munie d'une tête de brosse interchangeable
DE3200681A1 (de) * 1982-01-13 1983-07-28 Ludwig Dipl.-Ing. Lang Geteilte zahnbuerste mit wechselbuerstenkoepfen
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Also Published As

Publication number Publication date
US4683604A (en) 1987-08-04
CA1266357A (fr) 1990-03-06
JPS61226003A (ja) 1986-10-07
DE3510909A1 (de) 1986-10-09
DE3574334D1 (en) 1989-12-28
DE3510909C2 (fr) 1987-07-02
EP0199849A1 (fr) 1986-11-05
ATE48075T1 (de) 1989-12-15

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