WO2000056186A1 - Tete flexible pour une brosse a dents - Google Patents

Tete flexible pour une brosse a dents Download PDF

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Publication number
WO2000056186A1
WO2000056186A1 PCT/CH1999/000125 CH9900125W WO0056186A1 WO 2000056186 A1 WO2000056186 A1 WO 2000056186A1 CH 9900125 W CH9900125 W CH 9900125W WO 0056186 A1 WO0056186 A1 WO 0056186A1
Authority
WO
WIPO (PCT)
Prior art keywords
brush head
bristle
bristle carrier
tunnels
brush
Prior art date
Application number
PCT/CH1999/000125
Other languages
German (de)
English (en)
Inventor
Beat Huber
Original Assignee
Trisa Holding Ag
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
Priority claimed from CH00090/98A external-priority patent/CH692376A5/de
Priority to EP98121937A priority Critical patent/EP0930030B1/fr
Priority to NO990143A priority patent/NO990143L/no
Application filed by Trisa Holding Ag filed Critical Trisa Holding Ag
Priority to PCT/CH1999/000125 priority patent/WO2000056186A1/fr
Priority to AU27098/99A priority patent/AU2709899A/en
Publication of WO2000056186A1 publication Critical patent/WO2000056186A1/fr

Links

Classifications

    • 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
    • A46B5/00—Brush bodies; Handles integral with brushware
    • A46B5/002—Brush bodies; Handles integral with brushware having articulations, joints or flexible portions
    • A46B5/0054—Brush bodies; Handles integral with brushware having articulations, joints or flexible portions designed to allow relative positioning of the head to body
    • A46B5/0062—Brush bodies; Handles integral with brushware having articulations, joints or flexible portions designed to allow relative positioning of the head to body being flexible or resilient during use

Definitions

  • the invention relates to a flexible brush head for a toothbrush.
  • the object of the present invention is to create a flexible, adaptable brush head which allows better cleaning of the dentition.
  • the brush head according to the invention is very flexible due to its construction. It has a bristle carrier made of a first, hard but elastic plastic, which is divided into at least two segments one behind the other along the longitudinal axis of the brush head by at least one recess, which penetrates the bristle carrier transversely to the longitudinal axis of the brush head in the form of a tunnel.
  • the segments of the bristle carrier and preferably also the tunnel extend over the entire width of the brush head, the tunnel preferably being filled with a second, rubber-like, elastic plastic, which is much softer than the first plastic of the bristle carrier, so that there is no danger. that dirt gets stuck in the tunnel.
  • the construction described allows the individual segments of the bristle holder to be deflected against one another, which results in flexibility of the brush head. Since the brush head can be bent about an axis running transversely to its longitudinal axis, it is possible to adapt it to both the outside and inside of the tooth, which results in more careful cleaning of the teeth, the interdental spaces and the gum line. leaves.
  • the brush head has more than just two segments and accordingly more than one tunnel, the flexibility of the brush head increases and the effects described are enhanced.
  • the flexibility of the brush head can be further increased if the regions of the bristle holder that delimit the tunnels on the bristle-bearing side or on the opposite side of the bristle-bearing side of the bristle holder are designed so that they can be stretched or compressed in the longitudinal direction of the brush head .
  • An embodiment in the form of a bridge folded like an accordion is particularly suitable.
  • a region of the bristle carrier which is designed to be simple or expandable by folding and which delimits the tunnel on the sides mentioned yields elastically up to its elastic limit and thus acts as a bending limitation.
  • a brush head of the type described it is advantageous if, in the event that more than one tunnel is provided in the brush head, the tunnels are connected to one another, since in this way they are easier to connect with the second, soft, rubber-like elastic Have plastic filled. If entire toothbrushes are to be produced, it is advantageous to mold the brush head onto a brush handle or a plug-on part and also to produce this from the first, hard but elastic plastic.
  • Figure la is a plan view of the bristle-carrying side of such a toothbrush.
  • 1b shows a side view of the toothbrush shown in FIG.
  • FIGS. 1a and 1b are views of the rear side of the toothbrush shown opposite the bristle-carrying side of FIGS. 1a and 1b;
  • Fig. Ld shows a longitudinal section along the line I-I m of Fig. La;
  • Fig. Le shows a section through the brush handle along the line II-II in Fig. Lb;
  • Fig. Lf a section through the brush head along the line III-III in Fig. Lb;
  • Fig. Lg shows a section through the brush head along the line IV-IV m of Fig. Lb;
  • FIG. 2a shows a toothbrush with a further embodiment of the brush head according to the invention and with the transition to a brush handle m the top view of the bristle-carrying side;
  • FIG. 2b shows a side view of the toothbrush shown in FIG. 2a;
  • FIG. 2c shows a section through the brush head along the line I-I in FIG. 2b, the bristle bundles not being shown;
  • FIG. 2d shows a side view of the core of the toothbrush shown in FIGS. 2a and 2b, which core consists of the first, hard but elastic plastic
  • FIG. 2e shows a representation analogous to FIG. 2d of the toothbrush shown in FIGS. 2a and 2b under bending stress;
  • FIG. 3a shows a toothbrush with a further embodiment of the brush head according to the invention and with the transition to a brush handle in a top view of the bristle-carrying side;
  • g is a side view of the group consisting of the first, hard but elastic plastic core of the toothbrush "in Figures 3a and 3b are shown.
  • g " d shows a section along the line II in FIG. 3a;
  • Fl ⁇ 3 ' 3e a section along the line II-II in Fig. 3c;
  • g * an enlarged representation of a tunnel and the regions of the bristle carrier delimiting it according to FIG. 3c;
  • Fi g. 3 g ⁇ en ⁇ n F j_g. 3f shown enlarged area in a section along the central longitudinal axis of the brush head;
  • ti g. 4 a shows a toothbrush with a further embodiment of the brush head according to the invention and with the transition to a brush handle in a top view of the bristle-carrying side;
  • F i g. 4D is a side view of the toothbrush shown in FIG. 4a;
  • FIGS. 4a and 4b 9 * a view of the rear side opposite the bristle-carrying side of the toothbrush shown in FIGS. 4a and 4b;
  • F i g. 4g shows a section through the brush head along the line IV-IV in FIG. 4b;
  • FIG. 5a shows a toothbrush with a further embodiment of the brush head according to the invention analogous to the brush head shown in FIGS. 2a to 2e, in a representation corresponding to that in FIG. 2d;
  • Fig. 5b the toothbrush shown in Fig. 5a under bending stress.
  • La-g show a toothbrush 10 with part of a brush handle 12 and a brush head 14 with a bristle holder 16.
  • the bristle holder 16 made of a first, hard but elastic plastic is through tunnel 20, which the bristle holder 16 over its entire width penetrate, divided into five segments 17 (Fig. La, ld), in which different numbers of rows of bristles bundled into bristle bundles 18 are anchored.
  • the tunnels 20 between the segments 17 of the bristle carrier 16 (FIGS.
  • 1d, 1g are filled with a second, soft, rubber-like elastic plastic, which is firmly connected to the first, hard, elastic plastic of the bristle carrier 16.
  • the tunnels 20 are therefore completely surrounded by the hard, elastic plastic of the bristle carrier 16. They are delimited on the bristle-carrying side of the brush head 14 and on the side of the bristle head 14 opposite the bristle-carrying side by regions 22 of the bristle carrier 16 which are web-like, thin and therefore very flexible.
  • the bristle carrier 16 has, in the middle of its sides forming the lateral edge of the brush head 14, a side groove 30 which has the same height as the tunnels 20 (FIG. 1b, le, lf).
  • the tunnels 20 are connected to one another via the side groove 30 running more or less around the entire brush head 14, which is also filled with the second, soft, rubber-like elastic plastic.
  • the brush head 14 and the brush handle 12 are integrally connected to one another via the segment 17 'of the bristle holder 16 which is adjacent to the brush handle 12, the brush handle 12 likewise consisting of the hard but elastic plastic of the bristle holder 16 (FIGS. 1a to 1d).
  • the brush handle 12 has a handle groove 26 which extends on the bristle-carrying side of the toothbrush 10 along the longitudinal axis 24 of the toothbrush 10 (FIG. 1 a). Shortly before the brush head 14, this grip groove 26 (FIG. 1 a) divides and runs obliquely towards the brush head 14 on the lateral sides of the brush handle 12 and goes into the side groove 30 over (Fig. lb).
  • the grip groove 26, like the side groove 30, is filled with the second, soft, rubber-like elastic plastic.
  • the brush head 14 Due to the large number of segments 17 into which the bristle carrier 16 is divided by the tunnels 20 and because of the relatively thin and therefore very flexible regions 22 of the bristle carrier 16, the brush head 14 is very flexible overall and can be easily bent and in twist along the central longitudinal axis 24 'of the brush head 14. As a result, the brushing surface is better adapted to the tooth arches and the interdental spaces and better cleaning is achieved.
  • the tunnels 20 thus increase the flexibility of the brush head 14.
  • the areas 22 of the bristle holder 16 which delimit the tunnels 20 on the bristle-bearing side and on the opposite side of the brush head 14 from the bristle-bearing side, however, simultaneously reduce the risk that part of the brush head 14 is bitten off during use.
  • FIGS. 2a to 2e An embodiment which is slightly modified compared to the embodiment described in FIGS. 1a to 1g is shown in FIGS. 2a to 2e.
  • FIGS. 2a to 2e shows a toothbrush 10 with a further embodiment of the brush head 14 and with a short section of a brush handle 12.
  • the molded-on brush handle 12 also has a groove 26 on both lateral surfaces, which merges into the groove 30 of the bristle carrier 16 in the transition region 32 (FIGS. 2b, 2d and 2e) and with the second, soft, rubber-like elastic plastic is filled out.
  • the tunnels 20 are completely surrounded by the first, hard, elastic plastic of the bristle carrier 16.
  • Thieves- rich 22 of the bristle carrier 16, which delimit the tunnel 20 on the bristle-carrying side of the toothbrush 10 (Fig. 2b, 2d, 2e)
  • Thieves- rich 22 of the bristle carrier 16 which delimit the tunnel 20 on the bristle-carrying side of the toothbrush 10 (Fig. 2b, 2d, 2e)
  • Fig. 2b, 2c very thin and slightly curved
  • the regions 22 ′ of the bristle carrier 16, which delimit the tunnels 20 on the side opposite the bristle-carrying side, are also thin and elastic, so that when the toothbrush is used, the bristle carrier 16 bends out, as shown in FIG. 2e is shown to be elastically compressed.
  • the bristle bundles designated 18 'in FIGS. 2b, 2d and 2e, which belong to the rows adjacent to the tunnel 20, are inclined.
  • the inclined position is such that the bristle bundles 18 ′ arranged on both sides of a tunnel 20 are inclined towards one another, as a result of which the tunnel region lying between them is covered
  • FIGS. 3a to 3g has the same basic construction as the brush head 14 shown in FIGS. 2a-2e. However, the tunnels 20 expand in a trumpet shape towards the edge of the brush head 14 (FIG. 3a). The regions 22 of the bristle carrier 16, which delimit the tunnels 20 on the bristle-carrying side of the toothbrush 10 (FIGS.
  • 3c, 3f, 3g are also thin and slightly curved, so that they too, together with the edges, toward the bristle-carrying side of the segments 17 of the bristle carrier 16 form trough-like recessed grooves running across the brush head 14 (FIG. 3a). Since the tunnels 20 expand in a trumpet shape towards the edge of the brush head 14, the channels formed by the regions 22 on the bristle-carrying side of the brush head 14 also appear in a plan view in a shape that widens in a trumpet shape against the edge of the brush head 14 (FIG 3a). Like the regions 22 of the bristle carrier 16 in the embodiment described in FIGS. 2a to 2e, the regions 22 of the bristle carrier 16 also increase flexibility and limit bending.
  • the middle segment 17 and the segment 17 ′′ of the bristle carrier 16 opposite the brush handle 12 are in two parts 17a, 17b by an intermediate space 34 which extends over the entire width of the brush head 14 (FIGS. 3c, 3e) divided.
  • This intermediate space 34 connects the tunnels 20 to one another and is likewise filled with the second, soft, elastic plastic (FIG. 3d).
  • the intermediate space 34 with its soft, rubber-like elastic filling enables the segments 17 of the bristle carrier 16 to tilt along and transversely to the longitudinal axis 24 of the brush head 14.
  • the segment 17 'of the bristle carrier 16 located at the other end of the brush head 14 and adjacent to the brush handle 12 is not separated by the intermediate space .34. It goes into the brush handle 12 (Fig. 3c), which is made of the same hard, elastic plastic as the bristle carrier 16th
  • the basic construction of the brush head 14 shown in FIGS. 4a to 4g is the same as that of the brush head 14 shown in FIGS. La to lg. Both have a bristle carrier 16 made of hard, elastic plastic divided into five segments 17 by tunnels 20.
  • the bristle carrier 16 instead of a side groove 30 is one Has groove 28, which extends along the central longitudinal axis 24 'on the opposite side of the bristle-carrying side of the brush head 14 (Fig. 4c).
  • the groove 28, which is filled with the second, soft, rubber-like elastic plastic, penetrates the bristle carrier 16 in such a way that the tunnels 20 are connected to one another via the groove 28 (FIGS. 4c, 4d, 4f, 4g).
  • the brush handle 12 has a grip groove 26 on the back of the toothbrush 10 opposite the bristle-carrying side, which grips into the groove 28 in the region of the brush head 14 along the central longitudinal axis 24 'of the brush head 14. Both grooves 26 and 28 are filled with the soft, rubber-like elastic plastic (Fig. 4c, 4d, 4e).
  • the geometrical shape of the bristle carriers 16 can take on almost any shape when viewed from above.
  • the bristle carriers 16 and their segments 17 therefore do not have to be rectangular, as is shown in the examples in FIGS. 1a to 1g and 4a to 4g.
  • the same also applies to the tunnels 20 between the segments 17 of the bristle carriers 16, as is shown in FIGS. 3a, 3c, 3f.
  • Variations in the externally visible distribution between parts made of the first, hard, elastic plastic and the second, soft, rubber-like elastic plastic are of course also conceivable for design reasons.
  • the tunnels 20 extend over the entire width of the bristle carrier 16 and are continuous from side edge to side edge. It is now also conceivable not to design the tunnels 20 continuously, ie to interrupt the tunnels 20 with an intermediate piece. It is also possible to refrain from filling the tunnel 20 with the second, soft, elastic plastic. In such an embodiment, the side groove 30 or the groove 28 and the grip groove 26 can be dispensed with.
  • the bristle carrier 16 divided into segments 17 by the tunnels 20 and the brush handle 12 of such an embodiment consist of only one material, namely the first, hard, elastic plastic.
  • the brush head 14 designed according to the invention can be used not only for a manual toothbrush as shown, but also for slip-on toothbrushes, such as are used for electric toothbrushes.
  • the brush head 16 according to the invention is connected to a slip-on part.
  • the brush head 14 can also be exchangeably connected to the brush handle 12 or the plug-on part.
  • the configuration of the bristles or bristle bundles 18 can also be varied, as is already indicated in FIG. 3b by the different length of the bristle bundles 18 and the brush surfaces cut in part at an angle.
  • bristles or bundles of bristles 18 which are inclined relative to one another and intersecting, as shown in FIGS. 2b and 2d, can also be useful and additionally contribute to better cleaning of the dentition.
  • Those areas 22 of the bristle carriers 16 that delimit the tunnels 20 can also be designed in different ways. As described in the embodiment shown in FIGS. 2a-2e and 3a-3g, the flexibility of the brush head 14 can be increased if the regions 22 of the bristle carriers 16 are made thin and slightly curved become. The extensibility of these areas 22 m in the longitudinal direction of the brush head 14 can also be improved, for example, by thinning the areas 22 against their center hm. A very advantageous, because very stretchable, shape of these areas 22 is a thin configuration in the longitudinal direction of the brush head 14 folded like an accordion.
  • FIGS. 5a and 5b show a toothbrush 10 with a brush head 14, which is constructed analogously to the embodiment shown in FIGS. 2a to 2es.
  • the areas 22 on the bristle-carrying side of the brush head 14 are divided into two sections 22a and 14 by a parting plane 21 which extends over the entire width of the brush head 14 22b divided, which finally touch in the normal state, as shown in Fig. 5a. Under bending stress, the parting plane 21 widens to a gap 21 ', as shown in FIG.
  • the parting plane 21 m increases the flexibility of the brush head 14 in the areas 22.

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  • Brushes (AREA)

Abstract

L'invention concerne une tête flexible (14) pour une brosse à dents (10), pourvue d'un support de poils (16) constitué d'un premier matériau plastique élastique dur et subdivisé par des tunnels (20) perpendiculaires à l'axe longitudinal de la tête de brosse (14) en segments (17) disposés l'un derrière l'autre dans le sens longitudinal de la tête de brosse (14). Les segments (17) du support de poils (16) et les tunnels (20) s'étendent de préférence sur toute la largeur de la tête de brosse (14). Les tunnels (20) sont remplis d'un deuxième matériau plastique élastique tendre et sont reliés entre eux par l'intermédiaire d'une rainure (30) située latéralement sur le support de poils (16). Les zones (22, 22') du support de poils (16) délimitant les tunnels (20) sur la face portant les poils de la tête de brosse (14) et sur la face opposée sont déformables élastiquement et agissent comme limitation de flexion en cas de déviation des segments (17) du support de poils se produisant lors de l'utilisation.
PCT/CH1999/000125 1998-01-16 1999-03-23 Tete flexible pour une brosse a dents WO2000056186A1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP98121937A EP0930030B1 (fr) 1998-01-16 1998-11-19 Tête de brosse à dents flexible
NO990143A NO990143L (no) 1998-01-16 1999-01-13 Fleksibelt b°rstehode for en tannb°rste
PCT/CH1999/000125 WO2000056186A1 (fr) 1998-01-16 1999-03-23 Tete flexible pour une brosse a dents
AU27098/99A AU2709899A (en) 1998-01-16 1999-03-23 Flexible brush head for a toothbrush

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH00090/98A CH692376A5 (de) 1998-01-16 1998-01-16 Flexibler Bürstenkopf für eine Zahnbürste.
PCT/CH1999/000125 WO2000056186A1 (fr) 1998-01-16 1999-03-23 Tete flexible pour une brosse a dents

Publications (1)

Publication Number Publication Date
WO2000056186A1 true WO2000056186A1 (fr) 2000-09-28

Family

ID=25683483

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CH1999/000125 WO2000056186A1 (fr) 1998-01-16 1999-03-23 Tete flexible pour une brosse a dents

Country Status (3)

Country Link
AU (1) AU2709899A (fr)
NO (1) NO990143L (fr)
WO (1) WO2000056186A1 (fr)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1996002165A1 (fr) * 1994-07-13 1996-02-01 The Procter & Gamble Company Brosse a dents a tete souple, elastique, pourvue de poils
WO1997025899A1 (fr) * 1996-01-18 1997-07-24 The Procter & Gamble Company Brosse a dents a tete souple pourvue de charges elastomeres

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1996002165A1 (fr) * 1994-07-13 1996-02-01 The Procter & Gamble Company Brosse a dents a tete souple, elastique, pourvue de poils
WO1997025899A1 (fr) * 1996-01-18 1997-07-24 The Procter & Gamble Company Brosse a dents a tete souple pourvue de charges elastomeres

Also Published As

Publication number Publication date
NO990143D0 (no) 1999-01-13
NO990143L (no) 1999-07-19
AU2709899A (en) 2000-10-09

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