EP1646299A1 - Brosse a dents manuelle - Google Patents

Brosse a dents manuelle

Info

Publication number
EP1646299A1
EP1646299A1 EP03815811A EP03815811A EP1646299A1 EP 1646299 A1 EP1646299 A1 EP 1646299A1 EP 03815811 A EP03815811 A EP 03815811A EP 03815811 A EP03815811 A EP 03815811A EP 1646299 A1 EP1646299 A1 EP 1646299A1
Authority
EP
European Patent Office
Prior art keywords
bristle tufts
group
bristle
tufts
bristles
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
EP03815811A
Other languages
German (de)
English (en)
Other versions
EP1646299B1 (fr
Inventor
Petra Ansari
Conrad Berghammer
Andreas Birk
Gerhard Finger
Manfred Klawuhn
Joachim Klimeck
Joachim Wilhelm
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 EP1646299A1 publication Critical patent/EP1646299A1/fr
Application granted granted Critical
Publication of EP1646299B1 publication Critical patent/EP1646299B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • 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
    • A46B9/045—Arranged like in or for toothbrushes specially adapted for cleaning a plurality of tooth surfaces simultaneously
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S15/00—Brushing, scrubbing, and general cleaning
    • Y10S15/05—Varied length bristle

Definitions

  • the invention relates to a manual toothbrush according to the preamble of claim 1.
  • bristle tufts protrude from the toothbrush-side surface on an annular surface in the central region of the toothbrush head, all of which are inclined against the circumferential direction of the surface of the toothbrush head. Radially inside these bristle tufts are further bristle tufts, which are arranged on a second ring surface of smaller diameter and which also run inclined in the same direction as the outer bristle tufts.
  • the object of the invention is to provide a manual toothbrush in which as many bristles as possible easily penetrate into the interdental spaces and clean them thoroughly, not only during an up and down movement but also during a back and forth movement of the manual toothbrush during a cleaning process. Furthermore, the side flanks of the teeth should also be cleaned particularly thoroughly during a cleaning process.
  • the features of the invention provide a manual toothbrush with which the interdental spaces and their side flanks can be cleaned particularly well.
  • This is achieved in particular in that the outer bristle tufts of the second group arranged on an annular surface are inclined opposite to the bristle tufts of the third group and are locally separated from one another in the longitudinal direction.
  • those bristle tufts get very well into the interdental spaces that are inclined in the direction of movement of the manual toothbrush, while the bristle tufts that are inclined against the direction of movement of the manual toothbrush clean more or less the surface of the tooth flanks. If the toothbrush is now moved in the other direction, the oppositely directed bristle tufts now engage better in the interdental spaces, but now from the other side, so that they can then clean the interdental spaces better from the other side.
  • those tufts of bristles arranged on the ring surface which are arranged more or less at the edge region of the toothbrush head, are particularly effective. This is particularly because individual bristle tufts in motion on the side edges direction of the manual toothbrush and therefore, when brushing, bump across the interdental spaces or the tooth surface from above - similar to a scraper - and thus remove the plaque from the tooth surface particularly effectively.
  • the bristle tufts inclined transversely to the back and forth movement of the manual toothbrush which are more or less arranged in the inner region of the toothbrush head, run transversely to the direction of movement of the toothbrush and therefore have a more sliding effect on the end faces of the teeth, from the side are easily accessible.
  • the toothbrush is now moved up and down perpendicularly to the back and forth movement, that is to say moved essentially parallel to the interdental spaces, the scraping and sliding cleaning action is now taken over by the tufts of bristles arranged in the middle area of the toothbrush head on the outer ring surface, in particular in the interdental spaces. which leads to better cleaning results in the interdental spaces and also on the front of the teeth in less time.
  • the bristle tufts formed on the outer edge on the other hand, perform a wiping movement during this up and down movement, which then rather clean the surface of the tooth flanks, since they do not reach the interdental spaces as well.
  • the interdental spaces are thus cleaned better in a shorter cleaning time than is the case in the prior art.
  • the first group of bristle tufts formed at the front free end of the toothbrush head takes over the cleaning of the rearmost molar region, since they are formed the most forward when the toothbrush head penetrates an oral cavity.
  • the outer bristle tufts formed on an annular surface are supported in their cleaning effect in such a way that when the bristles are pressed against the tooth surface by the third group of bristle tufts they receive a supporting effect from the inside and thus penetrate better into the interdental spaces or better clean the end faces.
  • the third group of bristle tufts can also clean the front surfaces of the teeth better, so that the outer bristle tufts do not have to do the cleaning work alone. This also increases the service life of the manual toothbrush.
  • a further improved cleaning of the tooth surfaces is achieved by the features of claim 3.
  • the tooth surface Due to the almost closed surface of the inner bristle tufts arranged within the ring surfaces of the outer bristle tufts, the tooth surface is cleaned over a particularly large area, so that even with increased cleaning pressure the bristles do not immediately bend to the sides, which is less advantageous for the cleaning result and for the durability would. Furthermore, the toothpaste can adhere better to the closed surface and cannot run down the bristle tufts.
  • a particularly uniform roughened, closed cleaning surface is achieved at the free ends of the inner tufts of bristles. Because of their fine fiber structure, the free ends of the individual bristles of the bristle tufts interlock so that they can no longer be distinguished from one another. The bristles of all bristle tufts on the inside thus form a common bristle tuft with only one common cleaning surface, which can clean the tooth surface over a large area.
  • the bristle tufts are unraveled by means of a rapidly rotating disc, on the surface of which small knives are formed which run perpendicular to the disc and tear open the ends of the inner bristle tufts on the toothbrush side and unravel them in such a way that their fine fibers interlock and thus create a closed but roughened surface to let.
  • the features of claim 5 result in particularly good cleaning results because, due to the low inclination, the individual tufts of bristles provide quite good resistance when pressed against the tooth surface, so that as much contact pressure as possible given by an operator's hand can be released onto the tooth surfaces , This increases the efficiency of a toothbrush with better cleaning results in less time.
  • the features of claim 7 ensure that the fourth group of bristle tufts arranged between the second and third group of bristle tufts during the cleaning movement supports the bristle tufts of the second and third group in small border areas in a side-reinforcing manner, that is to say they contribute to the higher flexural rigidity in addition to their own cleaning task these bristle groups better and thus ensure a higher stability of the manual toothbrush according to the invention.
  • the features of claim 8 further support this effect, so that overall there is less wear on the bristle tufts of the manual toothbrush.
  • the bristle tufts of the fourth group lie at the same height as the bristle tufts lying within the bristle tufts formed on an annular surface; however, they can also be longer than the bristle tufts which lie within the bristle tufts formed on the annular surface and can be shorter than the bristle tufts formed on the annular surface.
  • the bristle tufts are used at the same time and harden the toothbrush surface of the bristle tufts
  • the bristle tufts are used slightly later, but they still harden the toothbrush surface of the bristle tufts sufficiently. They also form a supporting effect for the bristle tufts of the first to third groups formed between these bristle tufts.
  • patent claim 10 provide support for the bristle tufts of the second group which are closest to these bristle tufts. Due to the vertical arrangement of the bristle tufts of the fourth group, they can be arranged on the toothbrush head in such a way that they come particularly close to the bristle tufts formed on the ring surface in order to obtain the support effect right at the beginning of the cleaning process.
  • the cleaning result of the manual toothbrush according to the invention is improved, because the front area of the toothbrush head also reaches the molar teeth even deeper and also the rearmost area of the molar teeth can clean better.
  • the cleaning-side end of the first group of bristle tufts with its inclined plane is relatively flat on the tooth-cleaning surface in conventional manual toothbrush posture and thus brings about uniform cleaning of the molar teeth without the pressure constantly having to be changed.
  • claims 13 and 14 result in a particularly simple to produce manual toothbrush, in which the tufts have the same cross-section but nevertheless have different bristle thickness and color.
  • the tools required for such a manual toothbrush are easier to manufacture due to these features, so that the manufacturing costs of the manual toothbrush can be reduced.
  • FIG. 1 is a side view of a manual toothbrush with the bristle according to the invention
  • FIG. 2 shows a plan view of the manual toothbrush in the direction X according to FIG. 1,
  • Fig. 3 is a partial side view of the toothbrush head with the entire bristle according to Fig. 1, but on an enlarged scale and
  • FIG. 4 shows a partial top view of the toothbrush head with complete bristles according to FIG. 3.
  • FIGS. 1 and 2 show a manual toothbrush 1 which consists of an elongated handle 2, a neck 3 which adjoins the handle 2 and tapers in cross section, and a toothbrush head 4 which adjoins the neck 3.
  • the toothbrush head 4 has a front end 5 and a rear end 6, between which four groups 8 to 11 of bristle tufts 21 and 24 to 30 extend from the surface 7 upwards (FIG. 1), as is also shown on an enlarged scale in FIG Figures 3 and 4 is shown.
  • a handle surface 13 is formed which is suitable for the thumb of an operator, which is slightly let into the surface 12 and which, from the rear free end, runs transversely to the handle 2 and is bene ribs 14 which consist of thermoplastic elastomer and which are slightly bent forward towards the toothbrush head 4.
  • a further grip surface 35 is formed at the height of the grip surface 13, which is formed from lamella-like ribs 16 which run transversely to the longitudinal axis of the manual toothbrush 1 and which are very narrow and therefore when individual fingers are pressed on give way, similar to a cushion.
  • the fine ribs 16 and the base 17 connecting the ribs 16 to one another likewise consist of thermoplastic elastomer and are sprayed onto the base body 18 of the handle 2 and are only formed in the front area and on the side of the handle 2.
  • the manual toothbrush 1 is designed symmetrically and has a symmetry or center axis 23 running in the longitudinal direction of the manual toothbrush 1.
  • the toothbrush head 4 has the shape of an elongated oval in plan view, the strongly curved end faces of which form the front and rear ends 5, 6.
  • the surface 7 of the toothbrush head 4, from which the four groups 8 to 11 of bristle tufts 21 and 24 to 30 protrude, is inclined upwards by an angle a to a shelf 19.
  • the shelf 19 can be any surface of a furniture part. If the manual toothbrush 1 is placed on this storage surface 19, as shown in FIG.
  • the manual toothbrush 1 is supported on some storage surfaces 36, 37 formed on its underside 20 on the storage surface 19 and thus comes to a stable position, so that the top 12 shows substantially vertically upwards, as can be seen from Fig. 1.
  • the angle a between the shelf 19 and the surface 7 extends between 2 to 6 °, preferably 4 °. By this angle a, the handling of the manual toothbrush 1 is particularly good because the hand of an operator does not have to be twisted so that the groups 8 to 11 of the tufts of bristles 21 and 24 to 30 are relatively perpendicular to the tooth surfaces (not shown) of a treated operator Plant.
  • the front end 5 is followed by a first group 8 of bristle tufts 21 which are inclined forward by the angle b with respect to the perpendicular to the surface 7.
  • the angle b extends between 5 and 9 °, preferably 7 °.
  • the free ends 22 of the tufts of bristles 21 form a common plane which extends obliquely upwards relative to the surface 7 by the angle c.
  • the angle c extends between 13 and 18 °, preferably at 15 °.
  • the foremost point E1 of the foremost bristle tuft 21 has a length L1 to the surface 7 of approximately 12 mm.
  • the rearmost Point E2 of the two rearmost bristle tufts 21 has a length L2 of 10.5 mm from surface 7.
  • the bristle tufts 21 of the first group protrude from the surface 7 in such a way that, according to FIGS. 2 and 4, they all together outline a substantially crescent-shaped cross section in plan view.
  • the first group 8 is formed by six bristle tufts 21, of which five bristle tufts 21 run parallel to the edge 38 and a bristle tuft 21 is located within this bristle tuft 21, so that this group 8 gives a substantially crescent-shaped appearance in plan view.
  • a fourth group 11 of bristle tufts 24 adjoins the first group 8 of bristle tufts 21, which run transversely to the central axis 23 of the manual toothbrush 1, as shown in FIGS. 2 and 4.
  • the fourth group 11 consists of three bristle tufts 24, which are at substantially the same distance from the closest neighboring bristle tufts 21 of the first group 8. They therefore lie on a pitch circle diameter and run symmetrically with respect to the central axis 23, the central bristle tuft 24 being arranged directly in the center on the central axis 23.
  • the fourth group 11 of bristle tufts 24 is followed by the second group 9 of bristle tufts 25, which are arranged at the same distance from one another on a diameter D and, according to FIG. 2, counterclockwise at an angle f to the surface 7 are inclined.
  • the angle f is 6 to 8 °, preferably approximately 7 °, while the diameter D is between 7 and 10 mm, preferably 8.5 mm.
  • the bristle tufts 25 are arranged diametrically opposite one another and consist of eight to fourteen, preferably ten bristle tufts 25.
  • bristle tufts 26 from the second group 9 also extend radially from the surface 7, which likewise run diametrically opposite and whose center is the same center point M. , as is the case for the tufts of bristles 25.
  • the bristle tufts 26 extend vertically from the surface 7 upwards. They lie on a common diameter D1 and are offset from one another by 90 °, two tufts of bristles 26 running centrally to the center axis 23.
  • This second group 9 is in turn followed by a fourth group 11 of two bristle tufts 27 running perpendicular to the central axis 23, which are at the same distance from the central axis 23 and which extend vertically upwards from the surface 7.
  • a third group 10 of bristle tufts 28 adjoins the bristle tufts 27, which likewise consists of ten bristle tufts 28 uniformly distributed over the circumference.
  • the Bristle tufts 28 are not inclined counterclockwise like the bristle tufts 25, but are inclined clockwise around the circumference by the angle g, which has the same inclination of 6 to 8 °, preferably 7 °, as already indicated for the angle f of the second group 9 has been.
  • Four bristle tufts 29 are in turn arranged radially inside the bristle tufts 28, which protrude vertically upwards from the surface 7. No further details are given for the third group 10, since the bristle tufts 28, 29 and their arrangement on the toothbrush head 4 have the same dimensions, with the exception of the opposite direction of inclination, as has already been stated for the second group 9.
  • the third group 10 is in turn followed by a fourth group 11 of three bristle tufts 30, of which the middle bristle tuft 30 runs centrally to the center axis 23.
  • the two outer tufts of bristles 30 are at the same distance from the central axis 23.
  • the bristle tufts 21 of the first group 8 protrude furthest upwards, the bristle tufts 25 and 28 form a common plane E4 (FIG. 3) which runs parallel to the surface 7.
  • the distance L3 from the surface 7 to the plane E4 is 9 to 11 mm, preferably 10 mm.
  • the distance d from the plane E4 to the free surface 31 of the bristle tufts 30, 27, 24 of the fourth group 11 is the same and is 0.7 to 1.1 mm, preferably 0.9 mm.
  • the distance e from the plane E4 to the free surface 32 of the bristle tufts 29 and 26 is 1.2 to 1.8 mm, preferably 1.5 mm.
  • the tufts of bristles 25 and 28 have a diameter i of 1.6 mm, the diameters h of all the other tufts of bristles 21, 24, 26, 27, 29 and 30 are 1.9 mm.
  • the free ends 31, 32 of the tufts of bristles 30, 27, 24 and 29 and 26 also run parallel to the surface 7.
  • the tufts of bristles 25 and 28 lie on an imaginary ring surface 33 and 34, respectively, which are shown in FIG. 4 as thin lines.
  • the inside and outside diameters of the ring surfaces 33, 34 affect the side wall of the bristle tufts 25 and 28.
  • a distance between the edge of the bristle tufts 25 and 28 and the inside and outside diameter of the ring surfaces 33, 34 be present.
  • a tufts of bristles 25 or 28 may also be arranged on the inner radius or more on the outer radius of the annular surface 33, 34.
  • the bristle tufts 26 and 29 arranged within the bristle tufts 25 and 28 are so close to one another that, when their free ends 32 are frayed, they form an almost closed surface, but this was not shown in FIGS Bristle tufts 26, 29 can be better represented in their basic cross section.
  • the bristle tufts 24, 27, 30 of the fourth group 11 have a length L5 which extends from the surface 7 to their free ends 31.
  • the bristle tufts 26, 29 have a length L4 from the surface 7 to their free ends 32.
  • the length L4 is less than the length L5, which in turn is less than the length L3.
  • the dimension L4 is calculated from L3 minus e, the dimension L5 from L3 minus d.

Landscapes

  • Health & Medical Sciences (AREA)
  • Dentistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Brushes (AREA)

Abstract

La présente invention concerne une brosse à dents manuelle (1) comprenant une tête (4) qui présente une extrémité avant libre (5) et une section arrière (6). Une poignée (2) est adjacente à la section arrière (6). Au moins un faisceau de poils (21) sur l'extrémité avant libre (5) de la tête de brosse à dents (4) forme un premier groupe qui s'étend depuis la surface côté poils (7) de la tête de brosse à dents (4) vers le haut. Un deuxième groupe (9) de faisceaux de poils (25, 26) est adjacent à l'arrière au premier groupe (8). Ce deuxième groupe est constitué d'un côté de plusieurs faisceaux de poils (25) faisant saillie de la surface (7), qui sont placés les uns derrière les autres sur une surface annulaire et qui s'étendent dans la direction périphérique de la surface annulaire de manière inclinée par rapport à la surface (7) de la tête de brosse à dents (4) et, d'un autre côté, d'au moins un autre faisceau de poils (26) faisant saillie de la surface (7), qui s'étend à l'intérieur des faisceaux de poils (25) situés sur la surface annulaire. Selon cette invention, un troisième groupe (10) de faisceaux de poils (28) est adjacent au deuxième groupe (9) de faisceaux de poils (25), en direction de la section arrière (6). Ce troisième groupe est constitué de plusieurs faisceaux de poils 28 qui font saillie de la surface (7) et qui sont placés les uns derrière les autres sur une surface annulaire. Les faisceaux de poils (28) du troisième groupe (10) sont inclinés dans la direction périphérique à l'opposé de la direction des faisceaux de poils (25) du deuxième groupe (9). Ces faisceaux de poils (25, 28) peuvent ainsi bien pénétrer les espaces interdentaires, ce qui permet d'obtenir un meilleur résultat de nettoyage.
EP03815811A 2003-07-19 2003-11-03 Brosse a dents manuelle Expired - Lifetime EP1646299B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10332872A DE10332872A1 (de) 2003-07-19 2003-07-19 Handzahnbürste
PCT/EP2003/012199 WO2005018378A1 (fr) 2003-07-19 2003-11-03 Brosse a dents manuelle

Publications (2)

Publication Number Publication Date
EP1646299A1 true EP1646299A1 (fr) 2006-04-19
EP1646299B1 EP1646299B1 (fr) 2012-06-20

Family

ID=34041960

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03815811A Expired - Lifetime EP1646299B1 (fr) 2003-07-19 2003-11-03 Brosse a dents manuelle

Country Status (9)

Country Link
US (1) US7146675B2 (fr)
EP (1) EP1646299B1 (fr)
CN (1) CN100471416C (fr)
CA (1) CA2480120C (fr)
DE (1) DE10332872A1 (fr)
HK (1) HK1079064A1 (fr)
MX (1) MXPA05004508A (fr)
RU (1) RU2324412C2 (fr)
WO (1) WO2005018378A1 (fr)

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RU2004131571A (ru) 2005-09-10
CA2480120C (fr) 2008-02-19
US20050011031A1 (en) 2005-01-20
RU2324412C2 (ru) 2008-05-20
CN100471416C (zh) 2009-03-25
WO2005018378A1 (fr) 2005-03-03
DE10332872A1 (de) 2005-02-17
US7146675B2 (en) 2006-12-12
CA2480120A1 (fr) 2005-01-19
EP1646299B1 (fr) 2012-06-20
CN1691906A (zh) 2005-11-02
HK1079064A1 (en) 2006-03-31
MXPA05004508A (es) 2005-07-26

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