EP2136674B1 - Brosse à dents - Google Patents

Brosse à dents Download PDF

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Publication number
EP2136674B1
EP2136674B1 EP08748928.2A EP08748928A EP2136674B1 EP 2136674 B1 EP2136674 B1 EP 2136674B1 EP 08748928 A EP08748928 A EP 08748928A EP 2136674 B1 EP2136674 B1 EP 2136674B1
Authority
EP
European Patent Office
Prior art keywords
cleaning
section
cleaning section
toothbrush
region
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.)
Active
Application number
EP08748928.2A
Other languages
German (de)
English (en)
Other versions
EP2136674A1 (fr
Inventor
Martin Vitt
Gerhard Schäfer
Jens STÖRKEL
Daniel Rudersdorf
Ellen Conrad
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.)
Braun GmbH
Original Assignee
Braun GmbH
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 Braun GmbH filed Critical Braun GmbH
Publication of EP2136674A1 publication Critical patent/EP2136674A1/fr
Application granted granted Critical
Publication of EP2136674B1 publication Critical patent/EP2136674B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • A—HUMAN NECESSITIES
    • A46—BRUSHWARE
    • A46B—BRUSHES
    • A46B9/00—Arrangements of the bristles in the brush body
    • A46B9/06—Arrangement of mixed bristles or tufts of bristles, e.g. wire, fibre, rubber
    • 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
    • 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
    • A46B5/0025—Brushes with elastically deformable heads that change shape during use
    • A—HUMAN NECESSITIES
    • A46—BRUSHWARE
    • A46B—BRUSHES
    • A46B7/00—Bristle carriers arranged in the brush body
    • A46B7/06—Bristle carriers arranged in the brush body movably during use, i.e. the normal brushing action causing movement
    • 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
    • A46B9/04—Arranged like in or for toothbrushes
    • A—HUMAN NECESSITIES
    • A46—BRUSHWARE
    • A46B—BRUSHES
    • A46B9/00—Arrangements of the bristles in the brush body
    • A46B9/08—Supports or guides for bristles
    • A46B9/12—Non-adjustable supports
    • A—HUMAN NECESSITIES
    • A46—BRUSHWARE
    • A46D—MANUFACTURE OF BRUSHES
    • A46D1/00—Bristles; Selection of materials for bristles
    • 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 present invention relates to a toothbrush with a cleaning element, which is designed as a plastic injection molded part and which has a fastening portion for attachment in the head region of the toothbrush and a cleaning section for cleaning teeth.
  • Such a toothbrush is from the WO 02/38004 A1 known.
  • the head region of the toothbrush here has bristle tufts and alternately to cleaning elements, which are formed from a plastic injection molded part.
  • the cleaning elements are preferably made of a thermoplastic elastomer and have a uniform cross-sectional area over the longitudinal extent with respect to the cleaning section.
  • WO 03/055351 A1 From the WO 03/055351 A1 is also a toothbrush with cleaning elements known, which are formed from a plastic injection molded part.
  • cleaning elements as plastic injection molded parts instead of bristles usually results in a less tooth and gum-friendly use in the mouth of the user.
  • At least one indentation is provided in the region of the cleaning section of the cleaning element, so that the cleaning section has an increased bending flexibility at this point.
  • the indentation is comparable to a Sollknick- or predetermined bending point before a geometric shape, which leads to a preferred bending of the cleaning element around the indentation around, which means with a preferred bending also increased bending relative to adjacent sections without indentation.
  • the indentation predetermines a certain bending direction, so that an optimized bending flexibility of the upper end portion of the cleaning element is given relative to the arrangement of the cleaning element in the toothbrush head and in knowledge of the preferred usage behavior of a user of the toothbrush.
  • the recess is formed transversely to the toothbrush longitudinal axis, so that an increased bending flexibility is given by the indentation approximately in the direction of the longitudinal axis of the toothbrush.
  • a plurality of indentations are provided, so that the cleaning portion having these indentations has an increased bending flexibility in two directions.
  • the indentations are arranged on opposite sides of the cleaning section, so that the two preferred bending directions lie in one plane.
  • the plane of the bending directions is furthermore preferably approximately parallel to the longitudinal axis of the toothbrush or to the longitudinal axis of the toothbrush head.
  • the indentations have all indentation axes or bending axes around the indentation, which are arranged substantially perpendicular to the longitudinal axis of the toothbrush head.
  • the cleaning section has a wave-shaped area.
  • a plurality of recesses are successively provided on both sides of the cleaning member, so that the bending flexibility is further increased.
  • the at least one indentation or the wave-shaped region is arranged from the upper end to one tenth, in particular to three twentieths or to one fifth or further away over the longitudinal extension of the cleaning element seen.
  • the cleaning section has a narrow side and a broad side, wherein the indentation is formed and arranged such that the bending flexibility is increased over the broad side.
  • the predetermined by the basic geometry bendability of the cleaning element is reinforced with a broader broadside and a narrower narrow side by the indentation, because this is increased to increase the bending flexibility on the already better bendable side of the broadside.
  • the ratio of broad side to narrow side is between 2: 1 and 20: 1.
  • the cleaning element is formed from only one plastic component. It is therefore formed both the cleaning portion and the attachment portion of the same plastic component. This leads to a simplified manufacturability.
  • This aspect may also constitute another invention independently of the other aspects or in combination with them.
  • the attachment portion and the head portion of the toothbrush is designed such that the cleaning element with a force of> 8 Newton, in particular> 12 Newton, and in particular> 15 Newton from the head area is solvable.
  • the attachment portion is formed as a snap connection, so that the cleaning element can be mounted by snapping into the head region of the toothbrush.
  • this attachment portion or the snap connection is designed such that by attaching a tensile force on the cleaning element away from the toothbrush head, the cleaning element from a certain threshold force - as stated above - is solvable.
  • the narrow side is straight and the broad sides of the cleaning section on both sides with at least one, preferably two or more, indentations provided. Otherwise there is no or little bending flexibility on the narrow side and the flexural flexibility on the broad side is further increased by the indentations.
  • the cleaning section in the region of the indentations on a material width which is equal to or smaller than the material width of the cleaning section in the region of the attachment portion in particular in the bending direction to the indentations.
  • the cleaning section is tapered from the attachment section to the upper end in the material width, in particular with respect to the narrow side width.
  • Each broad side of the cleaning section has at the wavy area alternately indentations and bulges, with a recess on a broad side the other side of the broad side opposite and formed at the same height as a bulge.
  • Fig. 1 shows a perspective view of a toothbrush with a head portion 1 and a neck portion 2.
  • the grip area is in Fig. 1 not shown and joins, as known from the prior art, to the neck region 2 at.
  • the cleaning elements 4, 14, 24 are principally used in purely manual toothbrushes, in manual toothbrushes with electrically driven eccentric mass, which causes the tooth cleaning field to vibrate, in toothbrush toothbrushes for electric toothbrushes and in all other tooth-cleaning devices.
  • the brush head 1 follows Fig. 1 a tooth cleaning area, which has both bristle tufts 3 and a plurality of cleaning elements 4.
  • the bristle tufts 3 and the cleaning elements 4 are arranged approximately offset relative to one another via the longitudinal axis of the brush head, so that in the present case eight cleaning elements are arranged in the brush head.
  • the cleaning elements 4 are secured in corresponding openings of the head area 1 via a snap-in or snap connection. Another attachment, for example, with mechanical cold deformation or with heat such. B. by welding or hot caulking is also possible.
  • FIGS. 2 and 3 show a cleaning element from two different sides according to an embodiment of the invention.
  • the cleaning element is shown unassembled without the head portion of the toothbrush.
  • the cleaning element preferably consists of a single plastic component, which is in particular a silicone material, a rubber mixture, an elastomer, a polypropylene or a thermoplastic elastomer (TPE).
  • TPE thermoplastic elastomer
  • the cleaning element is preferably produced exclusively from TPE by the injection molding process.
  • As PP comes as a starting material in question.
  • the preferred Shore A hardness which applies throughout to the entire cleaning element, is between 75 SHA and 90 SHA or has a Shore D hardness of 30 SHD to 60 SHD.
  • the cleaning element 4 has a cleaning section A and a fastening section B.
  • the cleaning section A is designed as a substantially rectangular fin in section.
  • the cleaning section A is further formed so as to taper in thickness from a lower end portion adjacent to the fixing portion B to an upper end 6.
  • the cleaning section A has a wave-shaped region n, which is provided in each case with two recesses 7 on both sides, which are offset in position relative to the longitudinal extent to each other.
  • the indentations 7 extend over the entire width of the fin of the cleaning section, so that at a force acting on the upper end 6 of the cleaning section A is given an increased bending flexibility in the directions 8 and 9.
  • the wave-shaped portion n is formed in the upper half of the cleaning portion A, depending on the applied force at the upper end 6 and the side edges of the cleaning portion A, only the upper end portion of the cleaning portion A bends initially.
  • two each other at the same height of the longitudinal extension arranged indentations are possible.
  • the increased bending flexibility in the region of the cleaning section A is achieved with indentations with other geometric shapes in the form of recesses, notches, grooves, etc. or with softer material sections relative to the immediately adjacent materials of the cleaning section A.
  • the cleaning element 4 also has the attachment portion B, which is provided with a snap device 10.
  • a recess 11 of the locking or snap portion 10 of the locking projection 12 during assembly in the openings 5 of the head portion 1 can be easily deformed by pressing.
  • Fig. 4 shows a sectional view of the cleaning element 4 along the line AA in Fig. 2 , Like in the Fig. 4 shown, in the recess 11 of the snap connection, an inner wall portion 13 is provided by the variation of the wall thickness, the pull-out force is adjustable with which the cleaning element 4 from the opening 5 is detachable.
  • This pull-out force (along the longitudinal axis of the cleaning element in the direction of the upper end 6) is preferably at least 10 N, 12 N or 15 N.
  • FIGS. 5 and 6 show front and side views of the cleaning element in the snapped-in state of an opening 5 of the head area 1.
  • the cleaning element 14 of FIGS. 5 and 6 corresponds largely to the cleaning element 4 according to the embodiment of the invention, with the exception, for example, that no wave-shaped portion n is formed in the cleaning section A.
  • the cleaning section A goes from the FIGS. 5 and 6 Particularly well, that the cleaning portion A is provided with an approximately lower half C adjacent to the fixing portion B with a constant thickness and an upper portion D, which tapers in thickness to the upper end 6. All illustrated embodiments of the cleaning elements have either a cleaning section A.
  • the opening 5 of the head portion 1 has a first narrowing from top to bottom portion 17 and a subsequently widening portion 18. After the snap lugs 12 have overcome the narrowest point 19 of the opening 5 during assembly, the cleaning element is mounted in the head area 1.
  • the proposed embodiment of the attachment area B leads to a loose mounting of the cleaning element in the breakthrough game, so that both a translational movement by the distance 16, which corresponds to a few millimeters, in the axial direction of the cleaning element, as well as a pivoting movement about the pivot angle 15 is possible ,
  • the pivoting angles 15 are preferably between ⁇ 10 ° and ⁇ 20 °.
  • the snap device in the side view Fig. 3 approximately cylindrical or according to the side view Fig. 6 be provided with second snap-action lugs 23 in a range twisted by the snap lugs 12, for example by 90 degrees. This increases the necessary pull-out force to release the cleaning elements from the openings. Also the narrowing 19 in Fig. 5 and the narrowing in the second direction Fig. 6 in the breakthrough leads to a poorer solubility of the cleaning element.
  • the basic pivoting of the cleaning element by the angle 15 leads to a first evasive movement and the indentations 7 to a further flexibility of the cleaning section during its sliding along the tooth flanks and penetration into the interdental space.
  • the pivotability 15 and the bendability around the indentation 7 are given to the same side.
  • the cleaning element in particular according to the first embodiment according to the FIGS. 2 to 4 a flexibility (in which the mounting portion B is firmly clamped and the bending force is applied laterally at the top) from 30 mN to 60 mN (at 20 ° C) on. If this lateral bending force in the middle of the cleaning section A is likewise applied to the broad side 22 and the remaining parameters remain the same, the present geometry is a Minimum bending force of 140 mN to 200 mN, in particular 150 mN to 190 mN is required to bend the fin over an applied force at the center.
  • FIGS. 7 and 8 show an embodiment of a cleaning element 24 in two different side views, this embodiment is not included in the invention, but illustrates individual features that are associated with the invention.
  • the cleaning member 24 differs from the other two embodiments substantially in that no wave-shaped portion n in the cleaning portion A but in the tapered portion D, which extends approximately over the upper half of the cleaning portion A, a cleaning pad 20 is formed.
  • the cleaning pad 20 may be formed in the same component as the entire cleaning element or in an even softer elastomer over the remaining portions of the cleaning element.
  • the fastening section B is formed from a hard plastic or from a mixture of a hard plastic and an elastomer.
  • the cleaning section A can then also consist of the same plastic component as the section B or be formed of a softer material, in particular an elastomer.

Landscapes

  • Brushes (AREA)

Claims (8)

  1. Brosse à dents comprenant un élément de nettoyage (4, 14, 24), qui est réalisé en tant que pièce moulée par injection en plastique, qui présente un segment de fixation (B) pour la fixation dans la zone de tête (1) de la brosse à dents et un segment de nettoyage (A) pour le nettoyage des dents, le segment de nettoyage (A) présentant un côté étroit (21) et un côté large (22) et la pièce moulée par injection en plastique présentant au moins une partie en creux (7) dans la zone du segment de nettoyage (A) autour de laquelle le segment de nettoyage (A) présente une souplesse accrue en flexion, caractérisée en ce que le segment de nettoyage (A) se rétrécit depuis le segment de fixation (B) jusqu'à l'extrémité supérieure (6) dans la largeur du matériau, en particulier par rapport à la largeur du côté étroit et le segment de nettoyage (A) présente une zone ondulée (n), chaque côté large (22) du segment de nettoyage présentant, au niveau de la zone ondulée (n), des parties en creux et des renflements alternés, une partie en creux sur un côté large (22) étant formée sous forme de renflement à l'opposé sur l'autre côté du côté large (22) et la zone ondulée (n) étant disposée entre l'extrémité supérieure de l'élément de nettoyage et les deux tiers suivants de l'étendue longitudinale du segment de nettoyage (A).
  2. Brosse à dents selon la revendication 1, plusieurs parties en creux (7) étant disposées et formées au niveau du segment de nettoyage (A) de sorte que celui-ci présente une souplesse accrue en flexion dans deux directions (8, 9).
  3. Brosse à dents selon une des revendications précédentes, ladite au moins une partie en creux (7) étant disposée, partant d'une extrémité supérieure (6) opposée au segment de fixation (B) du segment de nettoyage (A), par rapport à l'extrémité supérieure (6), après un dixième, en particulier après trois vingtièmes, de l'étendue longitudinale du segment de nettoyage (A) ou dans la suite de l'étendue longitudinale, plus loin par rapport à l'extrémité supérieure (6).
  4. Brosse à dents selon une des revendications précédentes, le côté étroit (21) étant droit et les côtés larges (22) du segment de nettoyage (A) étant pourvus des deux côtés d'au moins une, de préférence chacun de plus de deux, parties en creux.
  5. Brosse à dents selon une des revendications précédentes, le segment de nettoyage étant formé de sorte que le rapport du côté large (22) au côté étroit (21) sur toute son étendue longitudinale soit compris entre au moins 2:1 et jusqu'à 20:1.
  6. Brosse à dents selon une des revendications précédentes, l'élément de nettoyage (4, 14, 24) étant formé en un composant en plastique.
  7. Brosse à dents selon une des revendications précédentes, le segment de fixation (B) et la zone de tête (1) de la brosse à dents étant formés de sorte que l'élément de nettoyage (4, 14, 24) n'est détachable de la zone de tête (1) qu'avec une force > 8 N, en particulier > 12 N et plus particulièrement > 15 N.
  8. Brosse à dents selon une des revendications précédentes, le segment de nettoyage (A) présentant, dans la zone (n) des parties en creux (7), une largeur de matériau, qui est égale ou inférieure, en particulier dans la direction de flexion autour des parties en creux (7), à la largeur de matériau du segment de nettoyage (A) dans la zone vers le segment de fixation.
EP08748928.2A 2007-04-20 2008-04-16 Brosse à dents Active EP2136674B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102007018766A DE102007018766A1 (de) 2007-04-20 2007-04-20 Zahnbürste
PCT/EP2008/003009 WO2008128684A1 (fr) 2007-04-20 2008-04-16 Brosse à dents

Publications (2)

Publication Number Publication Date
EP2136674A1 EP2136674A1 (fr) 2009-12-30
EP2136674B1 true EP2136674B1 (fr) 2018-05-23

Family

ID=39650680

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08748928.2A Active EP2136674B1 (fr) 2007-04-20 2008-04-16 Brosse à dents

Country Status (9)

Country Link
US (1) US8677545B2 (fr)
EP (1) EP2136674B1 (fr)
CN (1) CN101662971B (fr)
BR (1) BRPI0810154A2 (fr)
CA (1) CA2684648A1 (fr)
DE (1) DE102007018766A1 (fr)
HK (1) HK1139572A1 (fr)
MX (1) MX2009011296A (fr)
WO (1) WO2008128684A1 (fr)

Families Citing this family (16)

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Publication number Priority date Publication date Assignee Title
FR2957243B1 (fr) * 2010-03-12 2012-04-13 Conception Des Applic Des Tech Electroniques Soc Pour Instrument vibratoire a outil interchangeable
DE102010014929A1 (de) * 2010-04-14 2011-10-20 Synpart Ag Zahnbürste
EP2617318A1 (fr) * 2012-01-20 2013-07-24 Braun GmbH Tête pour dispositif d'hygiène buccale
CA2890864C (fr) 2012-11-05 2018-03-06 The Gillette Company Brosse a dents comprenant des elements de nettoyage elastomeres surmoules avec une matiere plastique plus dure et son procede de production
EP3262974B1 (fr) 2016-06-27 2024-06-12 The Procter & Gamble Company Procédé de production de têtes de brosse à dents comprenant un élément de nettoyage bi-composant
EP3262975B1 (fr) 2016-06-28 2019-02-20 The Procter and Gamble Company Procédé de fabrication d'une brosse
KR102022076B1 (ko) * 2017-09-21 2019-09-23 한양대학교 에리카산학협력단 Pva 브러쉬 세정 방법 및 장치
USD903215S1 (en) * 2018-11-20 2020-11-24 Rubbermaid Commercial Products Llc Broom
USD907368S1 (en) * 2019-06-21 2021-01-12 Shenzhen Yanbao Technology Co., Ltd. Toothbrush head
EP3753447A1 (fr) 2019-06-21 2020-12-23 The Procter & Gamble Company Procédé de production d'une tête de brosse à dents ou d'une partie de celui-ci
EP3753448A1 (fr) 2019-06-21 2020-12-23 The Procter & Gamble Company Procédé de production d'une tête de brosse à dents
EP3753449A1 (fr) 2019-06-21 2020-12-23 The Procter & Gamble Company Plaque de perforation de trous pour la fabrication d'une tête de brosse à dents et pièce associée
USD906679S1 (en) * 2019-06-21 2021-01-05 Shenzhen Yanbao Technology Co., Ltd. Toothbrush head
USD907369S1 (en) * 2019-06-21 2021-01-12 Shenzhen Yanbao Technology Co., Ltd. Toothbrush head
EP3753446A1 (fr) 2019-06-21 2020-12-23 The Procter & Gamble Company Support d'élément de nettoyage et tête de brosse à dents le comprenant
US11445812B2 (en) * 2020-06-08 2022-09-20 Frederick Sager Dental appliance

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KR101253795B1 (ko) * 2005-06-29 2013-04-12 라이온 가부시키가이샤 브러시의 제조 방법, 제조 장치, 및 브러시

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Also Published As

Publication number Publication date
CA2684648A1 (fr) 2008-10-30
BRPI0810154A2 (pt) 2014-12-30
WO2008128684A1 (fr) 2008-10-30
EP2136674A1 (fr) 2009-12-30
MX2009011296A (es) 2009-11-02
CN101662971B (zh) 2013-03-06
CN101662971A (zh) 2010-03-03
HK1139572A1 (en) 2010-09-24
US8677545B2 (en) 2014-03-25
US20110000041A1 (en) 2011-01-06
DE102007018766A1 (de) 2008-10-23

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