EP1643879B1 - Brosse a dents - Google Patents

Brosse a dents Download PDF

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Publication number
EP1643879B1
EP1643879B1 EP04736054A EP04736054A EP1643879B1 EP 1643879 B1 EP1643879 B1 EP 1643879B1 EP 04736054 A EP04736054 A EP 04736054A EP 04736054 A EP04736054 A EP 04736054A EP 1643879 B1 EP1643879 B1 EP 1643879B1
Authority
EP
European Patent Office
Prior art keywords
brush head
toothbrush according
bristle
bristle tufts
annular
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 - Lifetime
Application number
EP04736054A
Other languages
German (de)
English (en)
Other versions
EP1643879A1 (fr
Inventor
Jens STÖRKEL
Florina Winter
Manfred Klawuhn
Gerhard Schäfer
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
Priority to PL04736054T priority Critical patent/PL1643879T3/pl
Publication of EP1643879A1 publication Critical patent/EP1643879A1/fr
Application granted granted Critical
Publication of EP1643879B1 publication Critical patent/EP1643879B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • A46B9/026—Position or arrangement of bristles in relation to surface of the brush body, e.g. inclined, in rows, in groups where the surface of the brush body or carrier is not in one plane, e.g. not flat

Definitions

  • the invention relates to a toothbrush with a brush head, on one surface of which bristle tufts protrude.
  • Such a toothbrush is already known from German Utility Model 77 15 006.
  • a slotted or perforated plate is provided, through whose slots or holes bristle tufts protrude upwards.
  • the slotted or perforated plate is provided with a manually operable adjusting device by means of which the distance of the slotted or perforated plate to the surface from which the bristle tufts protrude can be varied such that thereby lengthens or shortens the free length of the bristle tufts becomes.
  • the hardness of the toothbrush can be increased or decreased.
  • the object of the invention is therefore to provide a toothbrush with a brush head according to the preamble, in which with simple means individual bristle tufts on the brush head easier or harder to move back and forth than other bristle tufts of the brush head. Furthermore, the cleaning result, especially in the area of the interdental spaces to be improved, the production techniques and the structure are simple and the manufacturing cost of the toothbrush low.
  • the annular or around a tufts running around recess is particularly easy to produce, if - in contrast to attaching the bristle tufts on the bristle head they are secured by anchors in prefabricated holes - the free ends of the bristle tufts are encapsulated for their attachment of plastic material, wherein the thus formed Plastic compound then forms the brush head.
  • the brush head forming molding tool must therefore be formed only with appropriate elevations, which then arise during the injection process, the annular recesses on the brush head.
  • the object of the invention is both manually operated toothbrushes as well as electrically operated toothbrushes with an oscillating round toothbrush, as for example from EP 1 138 222 A2 or from the EP 0 765 642 A2 is known, applicable.
  • the shape of the annular recess to the cross section of a protruding from the bottom of the annular recess bristle tufts better adapted. This has the advantage that the foot of the bristle tufts always has the same distance to the edge of the annular recess and thus this occupies the least possible space on the brush head.
  • a substantially rectangular in cross-section, circumferential, ie annular recess is selected with rounded corners whose walls extend at a small distance parallel to the outer walls of a bristle tufts.
  • the annular depression is also round or oval in cross-section. If one chooses a star-shaped or other cross-section on the bristle tufts, then the shape of the annular recess is then adapted to this cross-section.
  • the toothbrush can be a hand-held manual toothbrush, in which the hand must perform all cleaning movements mechanically; but it can also be an electrically operated toothbrush with a about her longitudinal axis back and forth swiveling brush movement or an oscillating, abrupt brush movement.
  • the annular recesses run freely to the side, i. they are not enclosed by a wall to the outside. This has the advantage that, when cleaning the brush head itself, any dirt particles deposited in the annular recesses may easily be washed out laterally outwards. The annular recesses are thus easily cleaned in this way.
  • a plurality of annular depressions are provided with these protruding bristle tufts on the side edges of the brush head, in order to obtain better interdental cleaning facilities, especially at the edge region.
  • protruding from the annular recesses bristle tufts then more bristle tufts are arranged, which are not surrounded by annular recesses and therefore due to their higher footbed have a higher bending stiffness than the bristle tufts according to the invention, provided they have the same cross-sections, the same bristle material and they end in the same plaster level on the brush head.
  • the bristle tufts lying at a higher level are now thicker in their cross-section and shorter in length than the bristle tufts formed in the annular depressions, then the bristle tufts projecting from the annular depressions are activated and guided better during the cleaning process therefore in the interdental cleaning process to a significantly improved cleaning effect.
  • the lying at a higher level and also shorter and thicker in cross-section bristle tufts unfold their Zahnputz Quantif already protruding from the annular recesses and smaller cross-sectional tufts deformed at their free ends of the teeth, laterally pushed away have penetrated into the individual tooth gaps.
  • annular depressions each having a protruding from the wells bristle tufts are provided on both sides of the brush head.
  • Such a number of annular recesses has proved to be the best possible embodiment in the adult toothbrushes suitable for adults, since in this case there is a sufficiently large distance between the individual bristle tufts in the longitudinal direction and they can deflect sufficiently well during the cleaning process, without them mutually to disturb. But those are from the wells outstanding bristle tufts and arranged between these bristle tufts shorter bristle tufts smaller in cross-section, so it is quite possible, even in the longitudinal direction to arrange more than four annular recesses with bristles tufts protruding therefrom. For smaller head sizes less than four, for example, three or two annular recesses may be provided with bristles tufts protruding therefrom.
  • toothbrush head is even more flexible and elastic, whereby an even easier penetration of protruding from the annular recesses bristle tufts in the interdental spaces is possible.
  • claim 12 allow the left opposite the right side of the brush head to move independently, so that the bristles are more flexible and more elastic and therefore better the contour of the teeth can follow and penetrate into many bumps of the teeth.
  • the invention is now transmitted to an offset by an electric drive in oscillating rotation round head of an electric toothbrush, in which the longer side of the rectangle of the annular recess extends substantially in the circumferential direction of the round head.
  • the toothbrush 1 consists of a brush head 2 and a handle 3, which is shown in Fig. 1 only dashed and partially, while it is not shown in the figures 2 to 5.
  • the brush head 2 consists of two in the longitudinal direction 4 of the toothbrush 1 divided brush head halves 5, 6, which are separated by a centrally extending, S-shaped slot 7 from each other.
  • the slot 7 begins shortly behind the handle 3 on the neck 8, which forms the transition to the brush head 2, as shown clearly in Fig. 1.
  • the brush head 2 expands after the neck 8 in the direction of the tip 30 towards very quickly to the widest points 31, from where the edges 26 again taper towards the tip 30 towards steadily.
  • the edges 26 are connected to the tip 30 via a radius R steplessly connected to each other.
  • bristle tufts 11, 12, 13, 14, 15, 16 and 17 which consists of many individual, in the tuft of the same length, fine bristles or filaments ( individual bristles are not shown) exist.
  • the bristle tufts 11, 12, 13, 14, 15, 16 and 17 have different cross-section, different lengths and different qualities.
  • the bristle tufts 11 have according to Figure 5 has a substantially rectangular cross-section, the corners 20 are slightly rounded.
  • the cross section of the bristle tufts 11 is formed by the longitudinal side e and the broad side f.
  • the rectangular cross-section of bristle tufts 11 may also be slightly oval, i.
  • the broad side f may also be formed instead of a straight line by an outwardly curved radius, which connects the two longer side walls 23, 24 seamlessly.
  • the surface 10 is substantially parallel to the back 9, which is slightly curved outwards and flattening towards the edges, so that the thickness of the brush head 2 decreases slightly towards the edge.
  • the surface 10 may also extend horizontally or inclined to the longitudinal axis 4 of the handle 3, depending on how the bristle tufts 11, 12, 13, 14, 15, 16 and 17 to the surface 10 and the longitudinal axis 4 of the handle 3 are arranged to best Achieve cleaning results.
  • annular recesses 21 are formed according to the figures 1 to 5 on the surface, which is respectively defined by the bottom 22, the longer side walls 23, 24 and a shorter side wall 25.
  • the formed on the two brush head halves 5, 6 annular recesses 21 extend to the nearest edge 26 and run out there, so that no shorter side walls, as on the opposite side arise at these locations.
  • the longer side walls 23, 24 extend transversely to the longitudinal direction 4 of the manual toothbrush 1. While the bottoms 22 are substantially perpendicular to the bristle tufts 11, the side walls 23 to 25 are substantially parallel to them. The transition of the side walls 23 to 25 to the bottom 22 via small radii to form no sharp but rounded corners 27 in these areas.
  • the annular recesses 21, like the cross sections of the bristle tufts 11, have a substantially rectangular cross section in plan view. Its longitudinal side b is 3 to 4 mm, preferably 3.5 mm. Its broadside a is 2 to 3 mm, preferably 2.5 mm. The depth t, measured from the surface 10 to the bottom 22 of the annular recess, is 1 to 2 mm, preferably 1.4 mm.
  • the free clamping length L1 measured from the bottom 22 to the free end 20 of the bristle tufts 11, is 12 to 14 mm, preferably 13 mm ( Figure 3).
  • the longitudinal side e of the bristle tufts 11 is 2, 1 to 2.4 mm, preferably 2.3 mm and the broad side f of the bristle tufts 11 is 0.7 to 0.8 mm, preferably 0.75 mm.
  • the longitudinal side e extends transversely to the longitudinal direction 4 of the manual toothbrush 1, which means that during the cleaning process in the direction of movement X, the bristle tufts 11 have a lower flexural rigidity than in the cleaning direction Y.
  • the height of the brush head is composed according to Figure 3 from the dimensions d2 and t and thus gives 3.5 to 5 mm, preferably 4.1 mm. Of course, these values, which are referred to as “preferably”, can also deviate upward as well as downward. According to Fig. 3, the thickness d2, measured from the bottom 22 of the annular recess 21 to the bottom 9 of the brush head 2, 2.5 to 3 mm, preferably 2.7 mm.
  • the bristle tufts 11 extend in series in the edge region 18 in series, and extend centrally from the annular recesses upwards. Between the annular depressions 21, bristle tufts 12 extend upwards from the surface 10, which have a larger cross-section than the bristle tufts 11, but their longitudinal sides d also extend essentially transversely to the longitudinal axis 4 of the manual toothbrush 1.
  • the longitudinal side d of a bristle tufts 12 is 2 , 2 to 2.8 mm, preferably 2.5 mm and the broad side c is 1.6 to 2 mm, preferably 1.8 mm, while their length L2, measured from the surface 10 to the free end 29, 9 to 10 mm is preferably 9.5 mm.
  • bristle tufts 11 is followed by another bristle tufts 12, so that in the edge region 18 both four bristle tufts 11 and 4 bristle tufts 12 are arranged, which alternate in each row. Since the bristle tufts 11, 12 have a constant distance from the edge 26, but this is slightly curved outwards, and the row of bristle tufts 11, 12 is slightly curved outwards. As can be seen from FIG. 5, four bristle tufts 11 are arranged in series one behind the other at the side edges 18 at a distance g, wherein the distance g is 3 to 3.5 mm, preferably 3.2 mm. The distance h between the rearmost and the foremost bristle tufts 11 is 18 mm to 21 mm, preferably 19.6 mm.
  • the bristle tufts 11 are colored differently to distinguish them from the bristle tufts 12 to 17, which is indicated in FIGS. 2 to 5 by the darker representation.
  • the cross sections of the bristle tufts 12 are also rounded at their corners 19, on the one hand to avoid sharp edges and on the other hand to make a simple production possible.
  • the bristle tufts 13, 14 also have a substantially rectangular or slightly oval cross-section. In the case of the rectangular cross section, the shorter sides can again be formed by outwardly curved radii.
  • the free end of the handle 3 and in the direction of the surface 10 is inclined.
  • the free ends 33, 34, 35 of the bristle tufts 11, 12, 13 extend substantially parallel to the surface 10 of the brush head 2, but these can, if this improves the cleaning result, slightly inclined forward or backward.
  • the free ends 33 of the bristle tufts 11 protrude slightly above the free ends 34 of the bristle tufts 12 to provide better penetration into the interdental spaces.
  • the bristle tufts 11, 12 consist of many individual bristles or filaments (not shown in the drawing).
  • the bristles of the bristle tufts 11 have a thickness of preferably 0.008 inch (0.205 mm) and the bristles of the tufts 12 have a thickness of 0.006 inch (0.152 mm). Due to the greater thickness of the filaments on the bristle tufts 11, they have a higher endurance, ie the thickness and quality of the individual filaments and the number of individual filaments in the bristle tufts 11 themselves are such that they do not wear out sooner than the bristle tufts 12 to 17 , so that the state of wear on all bristle tufts of a toothbrush 1 looks almost the same.
  • the free ends 33 of the bristle tufts 11 against the surface of the first Teeth pressed. They pivot or bend against the direction of movement X until the free ends 33 of the bristle tufts 11 slide into the interdental spaces. They push impurities out of the interdental spaces.
  • the free ends 34 of the bristle tufts 12 arrive at the same time on the front surfaces of the teeth to the plant and clean them.
  • the bristle tufts 11 are due to their smaller cross-section and due to their greater clamping length relative to the bristle tufts 12 much easier to deform in the X direction, as is the case with the bristle tufts 12.
  • the better bending elastic behavior of the bristle tufts 11 and their slim cross-section promote the cleaning process, the penetration of their free ends 33 in the interdental spaces, which improves the cleaning result.
  • the toothbrush 1 reciprocated in the direction Y, so first grab the free ends 32 of the bristle tufts 11 in the interdental spaces and push impurities out of the interdental spaces, because the flexural rigidity in direction Y is greater than in the direction X is, that is, in the direction of movement Y, the interdental spaces can be particularly well cleaned.
  • the width f of the bristle tufts 11 is dimensioned so that the free ends 32 can penetrate well into the interdental spaces. Even if the interdental spaces are very small, at least part of the bristle tufts 11 penetrate into the interdental spaces.
  • the larger diameter of the individual bristles opposite the bristle tufts 12 is advantageous since the bristles of the bristle tufts 11 provide greater resistance to the deposits lodged in the interdental spaces.

Landscapes

  • Brushes (AREA)

Claims (18)

  1. Brosse à dents (1), avec une tête de brosse (2) sur la surface (10) côté brossage de dents de laquelle saillissent des touffes de poils (11-17), caractérisée en ce que au moins une touffe de poils (11) est entourée par un creux annulaire (21) conçu sur la surface (10) et le creux (21) étant délimité par un fond (22) dans lequel pénètre la touffe de poils (11) et dans lequel elle est fixée.
  2. Brosse à dents selon la revendication 1,
    caractérisée en ce que
    le creux annulaire (21) est sensiblement adapté à la section transversale de la touffe de poils (11).
  3. Brosse à dents selon la revendication 2,
    caractérisée en ce que
    le creux annulaire (21) et la section transversale de la touffe de poils (11) sont sensiblement conçus sous forme rectangulaire.
  4. Brosse à dents selon la revendication 1, un manche (3) qui avec la tête de brosse (2) forme une direction longitudinale commune (4) se raccordant sur l'une des extrémités de la tête de brosse (2),
    caractérisée en ce que
    les parois latérales plus longues (23, 24) du rectangle s'étendent à la transversale de l'axe longitudinal (4) de la tête de brosse (2).
  5. Brosse à dents selon la revendication 4,
    caractérisée en ce que
    les creux annulaires (21) s'étendent sur le bord (18) de la tête de brosse (2).
  6. Brosse à dents selon la revendication 5,
    caractérisée en ce que
    les creux annulaires (21) s'écoulent librement vers le bord (18).
  7. Brosse à dents selon la revendication 5 et 6, caractérisée en ce que
    entre deux creux annulaires (21), une touffe de poils supplémentaire (12) saillit avec les touffes de poils (11) saillant hors de ces derniers.
  8. Brosse à dents selon la revendication 7,
    caractérisée en ce que
    la touffe de poils supplémentaire (12) présente une section transversale rectangulaire, dont le côté le plus long (d) s'étend à la transversale de la direction longitudinale (4) du manche (3) et de la tête de brosse (2).
  9. Brosse à dents selon la revendication 7,
    caractérisée en ce que
    le creux annulaire (21) avec ses touffes de poils (11) saillant hors de ce dernier est conçu dans la zone marginale (18) de la tête de brosse (2).
  10. Brosse à dents selon la revendication 9,
    caractérisée en ce que
    sur la zone marginale (18) de la tête de brosse (2), il existe vers les deux côtés chaque fois quatre creux annulaires (21), avec chacun une touffe de poils (11) saillant hors des creux (21).
  11. Brosse à dents selon la revendication 7,
    caractérisée en ce que
    les touffes de poils (11) saillant hors des creux annulaires (21) ont une longueur (L1) supérieure à celle de touffes de poils (12) voisines.
  12. Brosse à dents selon la revendication 9,
    caractérisée en ce que
    la tête de brosse (2) est divisée en direction longitudinale (4) au centre de la pointe (30) par une encoche (7) et en ce que l'encoche (7) se termine sur le passage vers le manche (3).
  13. Brosse à dents selon la revendication 3, la tête de brosse étant formée par une tête ronde, susceptible d'être amenée en rotation oscillante,
    caractérisée en ce que
    les parois latérales plus longues, aussi bien du creux annulaire que de la touffe de poil saillant hors de ce dernier s'étendent sensiblement en direction périphérique de la tête ronde ou avec un écart constant par rapport au bord de la tête ronde.
  14. Brosse à dents selon la revendication 13,
    caractérisée en ce que
    plusieurs creux annulaires s'étendent avec un faible écart par rapport au bord de la tête de brosse.
  15. Brosse à dents selon la revendication 14,
    caractérisée en ce que
    les creux annulaires s'écoulent librement en direction radiale vers l'extérieur.
  16. Brosse à dents selon la revendication 15,
    caractérisée en ce que
    entre deux creux annulaires (21), une touffe de poils supplémentaire saillit avec les touffes de poils saillant hors de ces derniers.
  17. Brosse à dents selon la revendication 16,
    caractérisée en ce que
    la touffe de poils supplémentaires présente une section transversale rectangulaire, dont le côté le plus long s'étend à la transversale de la tête de brosse ou avec un écart identique par rapport au bord.
  18. Brosse à dents selon la revendication 13,
    caractérisée en ce que
    les touffes de poils saillant hors des creux annulaires ont une longueur supérieure à celle de touffes de poils voisines.
EP04736054A 2003-07-11 2004-06-04 Brosse a dents Expired - Lifetime EP1643879B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL04736054T PL1643879T3 (pl) 2003-07-11 2004-06-04 Szczoteczka do zębów

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10331369A DE10331369B4 (de) 2003-07-11 2003-07-11 Zahnbürste
PCT/EP2004/006022 WO2005006915A1 (fr) 2003-07-11 2004-06-04 Brosse a dents

Publications (2)

Publication Number Publication Date
EP1643879A1 EP1643879A1 (fr) 2006-04-12
EP1643879B1 true EP1643879B1 (fr) 2007-10-03

Family

ID=34071617

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04736054A Expired - Lifetime EP1643879B1 (fr) 2003-07-11 2004-06-04 Brosse a dents

Country Status (7)

Country Link
US (2) US7814606B2 (fr)
EP (1) EP1643879B1 (fr)
CN (1) CN100515269C (fr)
AT (1) ATE374544T1 (fr)
DE (2) DE10331369B4 (fr)
PL (1) PL1643879T3 (fr)
WO (1) WO2005006915A1 (fr)

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Also Published As

Publication number Publication date
CN1822779A (zh) 2006-08-23
US7979947B2 (en) 2011-07-19
US7814606B2 (en) 2010-10-19
US20070033757A1 (en) 2007-02-15
ATE374544T1 (de) 2007-10-15
DE502004005153D1 (de) 2007-11-15
CN100515269C (zh) 2009-07-22
WO2005006915A1 (fr) 2005-01-27
DE10331369A1 (de) 2005-02-17
PL1643879T3 (pl) 2008-02-29
EP1643879A1 (fr) 2006-04-12
US20100306943A1 (en) 2010-12-09
DE10331369B4 (de) 2010-09-16

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