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WO1996009019A1 - Brosse a dents electrique - Google Patents

Brosse a dents electrique Download PDF

Info

Publication number
WO1996009019A1
WO1996009019A1 PCT/EP1995/003753 EP9503753W WO9609019A1 WO 1996009019 A1 WO1996009019 A1 WO 1996009019A1 EP 9503753 W EP9503753 W EP 9503753W WO 9609019 A1 WO9609019 A1 WO 9609019A1
Authority
WO
WIPO (PCT)
Prior art keywords
toothbrush
axis
driver
rocker
groove
Prior art date
Application number
PCT/EP1995/003753
Other languages
German (de)
English (en)
Inventor
Edgar Hommann
Original Assignee
Finalpina 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
Application filed by Finalpina Ag filed Critical Finalpina Ag
Priority to AU37420/95A priority Critical patent/AU3742095A/en
Publication of WO1996009019A1 publication Critical patent/WO1996009019A1/fr

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C17/00—Devices for cleaning, polishing, rinsing or drying teeth, teeth cavities or prostheses; Saliva removers; Dental appliances for receiving spittle
    • A61C17/16—Power-driven cleaning or polishing devices
    • A61C17/22—Power-driven cleaning or polishing devices with brushes, cushions, cups, or the like
    • A61C17/32—Power-driven cleaning or polishing devices with brushes, cushions, cups, or the like reciprocating or oscillating
    • A61C17/34—Power-driven cleaning or polishing devices with brushes, cushions, cups, or the like reciprocating or oscillating driven by electric motor
    • A61C17/3409—Power-driven cleaning or polishing devices with brushes, cushions, cups, or the like reciprocating or oscillating driven by electric motor characterized by the movement of the brush body
    • A61C17/3472—Power-driven cleaning or polishing devices with brushes, cushions, cups, or the like reciprocating or oscillating driven by electric motor characterized by the movement of the brush body with combined movements of the brush body
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C17/00—Devices for cleaning, polishing, rinsing or drying teeth, teeth cavities or prostheses; Saliva removers; Dental appliances for receiving spittle
    • A61C17/16—Power-driven cleaning or polishing devices
    • A61C17/22—Power-driven cleaning or polishing devices with brushes, cushions, cups, or the like
    • A61C17/32—Power-driven cleaning or polishing devices with brushes, cushions, cups, or the like reciprocating or oscillating
    • A61C17/34—Power-driven cleaning or polishing devices with brushes, cushions, cups, or the like reciprocating or oscillating driven by electric motor
    • A61C17/3409—Power-driven cleaning or polishing devices with brushes, cushions, cups, or the like reciprocating or oscillating driven by electric motor characterized by the movement of the brush body
    • A61C17/3418—Rotation around the axis of the toothbrush handle
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C17/00—Devices for cleaning, polishing, rinsing or drying teeth, teeth cavities or prostheses; Saliva removers; Dental appliances for receiving spittle
    • A61C17/16—Power-driven cleaning or polishing devices
    • A61C17/22—Power-driven cleaning or polishing devices with brushes, cushions, cups, or the like
    • A61C17/32—Power-driven cleaning or polishing devices with brushes, cushions, cups, or the like reciprocating or oscillating
    • A61C17/34—Power-driven cleaning or polishing devices with brushes, cushions, cups, or the like reciprocating or oscillating driven by electric motor
    • A61C17/3409—Power-driven cleaning or polishing devices with brushes, cushions, cups, or the like reciprocating or oscillating driven by electric motor characterized by the movement of the brush body
    • A61C17/3445—Translation along the axis of the toothbrush handle

Definitions

  • the invention relates to an electric toothbrush with a toothbrush axis mounted in a toothbrush housing, which can be set in an oscillating movement about its longitudinal axis and a reciprocating movement in the direction of its longitudinal axis by an electric motor with a rotating motor shaft, whereby to generate the Pen ⁇ del movement on the toothbrush axis a radially aligned and firmly connected to it rocker is provided and wherein the toothbrush for generating the reciprocating movement of the toothbrush axis has an eccentric driven by the electric motor, which in a connected to the toothbrush axis Driver engages.
  • An electric toothbrush of the above type is the subject of US-A-4,756,202.
  • an eccentric aligned parallel to the toothbrush axis engages in a radial guide of the rocker in this toothbrush.
  • the reciprocating movement of the toothbrush axis is generated by a second eccentric of a crown wheel which is arranged transversely to the toothbrush axis and which engages in a guide running transversely to the toothbrush axis of a driver firmly connected to the toothbrush axis.
  • the arrangement of two eccentrics to generate the two required movements of the toothbrush axis requires considerable structural effort, since both eccentrics must be rotatably mounted in the housing and driven by a gear.
  • an electric toothbrush has also become known, in which for generating a Pendulum movement and a reciprocating movement of the toothbrush axis only a single eccentric is required.
  • the latter is oriented transversely to the toothbrush axis and engages in a rocker which runs parallel to the toothbrush axis and is firmly connected to it in such a way that it moves in the longitudinal direction of the toothbrush axis with it and the transverse movement component of the eccentric by a tilting movement ⁇ equal, whereby the oscillating movement of the toothbrush axis arises.
  • the gear mechanism is very simple, can work with little friction and enables the front area of the handle part of the toothbrush to be tilted. It is disadvantageous, however, that the gear mechanism only allows relatively small movements of the toothbrush axis and must be manufactured with relatively high precision in order to prevent jamming.
  • the invention is based on the problem of developing an electrical toothbrush of the type mentioned at the outset, which is of particularly simple construction and enables the greatest possible stroke movements of its toothbrush axis with little construction effort.
  • the driver has a bore running transversely to the toothbrush axis, into which the eccentric engages in order to produce a circular movement of the driver, in that the driver furthermore has a groove running transversely to the toothbrush axis, with which it runs transversely to the Toothbrush axis slidably engages over a rocker which is firmly connected to the toothbrush axis, designed as a sliding block and aligned radially to the toothbrush axis, that the rocker is held in the groove so as to be tiltable to a limited extent about the longitudinal axis of the toothbrush axis, and that to generate the pendulum movement of the rocker and thus the toothbrush axis the rocker is coupled to the driver by a swivel connection.
  • a single eccentric driven by the electric motor of the toothbrush is sufficient to generate both movements of the toothbrush axis.
  • the oscillating movement of the toothbrush axis is not generated by a rocking movement of a rocker arranged parallel to the toothbrush axis, as in the cited document, but, as in US Pat. No. 4,756,202, by a radial rocker, which, however, is not from a separate eccentric, but from the driver driven by the single eccentric is set into the required oscillating movement. Therefore, a large stroke is also possible with the pendulum movement, without losing the simple gear structure as in DE-A-38 03 646.
  • the pivot connection between the driver and the radial rocker arm could be formed, for example, by a pin which projects from the end face of the driver facing the toothbrush axis and which engages in a radial groove of the driver.
  • the swivel connection is particularly simple if, according to a development of the invention, it is formed by a radially aligned recess in the driver opening into the groove and a radial cam of the rocker which engages in this recess, and if the recess is on both sides of the The cam extends in cross-section from a tilting edge resting against the cam on the side facing and away from the toothbrush axis.
  • a particularly large swiveling range of the toothbrush axis about its longitudinal axis can be achieved with little effort if, according to another development, the
  • the pivot connection is formed by a toothing on the rocker and the driver.
  • a simple, constructive embodiment consists in that the groove is provided in an end face facing the toothbrush axis, is open towards the end face and is T-shaped in the manner of a link guide, and that the recess is accordingly also in this end face.
  • the groove does not need to be undercut, that is to say preferably to be T-shaped, in order to fix the driver in the longitudinal direction of the toothbrush axis if, according to another embodiment of the invention, the groove is provided in a surface of the driver which is oriented parallel to the eccentricity of the eccentric is.
  • the gear mechanism of the toothbrush according to the invention can optionally be used for toothbrushes with a toothbrush axis that is aligned with the longitudinal axis of the electric motor and offset with respect to the longitudinal axis, if the toothbrush axis is in alignment with the longitudinal axis of the electric motor in a first mounting position of the driver and if the toothbrush axis is in a second mounting position of the driver , in which it is pushed on the eccentric by 180 ° offset about the longitudinal axis, has an offset to the longitudinal axis.
  • Fig.l is a perspective view of one for area of the toothbrush essential to the invention.
  • FIG. 2 shows a partial area of the toothbrush area shown in FIG. 1 on an enlarged scale and also in perspective
  • FIG. 3 shows the partial area shown in FIG. 2 in an embodiment modified from FIGS. 1 and 2,
  • FIG. 4 shows a perspective illustration of a partial area of a further embodiment of the toothbrush according to the invention
  • FIG. 5 shows the toothbrush according to FIG. 4 in a first assembly position of its driver
  • FIG. 6 shows the toothbrush according to FIG. 4 in a second mounting position of its driver.
  • FIG. 1 shows an electric toothbrush with a holder 1 which is fixed to the housing and in which a toothbrush axis 2 is mounted in such a way that it can perform a reciprocating movement in the longitudinal direction and additionally an oscillating movement about its longitudinal axis 3, which can was illustrated by two double arrows.
  • a toothbrush axis 2 On the free left end of the toothbrush axis 2, as seen in FIG.
  • An electric motor 4 is used to drive the toothbrush axis 2, which drives a pinion 5 by means of a motor shaft which cannot be recognized and which meshes with the toothing of a crown wheel 6 mounted fixed to the housing.
  • This crown wheel 6 has a crosswise to the toothbrush axis 2 the eccentric 7, which passes through a bore 8 of a driver 9.
  • the driver 9 therefore moves circularly with the electric motor 4 running in a plane running parallel to the plane of the crown gear 6.
  • FIG. 2 illustrates that the driver 9 has in its end face 10 facing the toothbrush axis 2 a groove 11 which is designed as a T-groove and runs transversely to the toothbrush axis 2 and which engages over a rocker arm 12 which is designed as a sliding block and which in turn engages in the groove 11 engages tiltably about the longitudinal axis 3 of the toothbrush axis 2.
  • the toothbrush axis 2 also has a radially oriented cam 13 which is connected to the driver 9 by a pivot connection 14 in such a way that it can oscillate about the longitudinal axis 3 together with the toothbrush axis 2, which is not possible for the driver 9. because it is held by the eccentric 7.
  • the swivel connection 14 is formed by a recess 15 in the end face 10 of the driver 9, in which the cam 13 engages and which in each case extends upwards and downwards from a tilting edge 16, which abuts against one side of the cam 13 expanded in width.
  • the driver 9 moves by the movement of the eccentric 7 to the right or left, then the cam 13 tilts accordingly to the right or left, so that the toothbrush axis 2 performs the desired pendulum movement. Since the groove 11 is T-shaped, the movement of the driver 9 forwards or backwards causes the toothbrush axis 2 with the rocker 12 to move back and forth accordingly.
  • An axis 17 can be seen in FIG. 2, which passes centrally through the crown gear 6 and carries this and the eccentric 7. If this corresponds to the formation of the toothbrush housing, its front region with the toothbrush axis 2 can be bent relative to a region with the electric motor 4.
  • the embodiment according to FIG. 3 differs from the one described above by a different design of the swivel connection 14.
  • teeth 18, 19 are provided on both the cam 13 and the end face 10 of the driver 9.
  • the toothing 18 is designed in the manner of a toothed rack and the toothing 19 is designed as a segment of a toothed wheel toothing which engages in this toothing 18.
  • the lateral displacement of the driver 9 causes the cam 13 and thus the toothbrush axis 2 to oscillate.
  • the groove 11 does not run in the end face 10 of the driver 9 facing the toothbrush axis 2, but in a side face 21 of the driver 9 at a distance from the end face 10. This side face 21 is parallel to the plane of the eccentric tricity of the eccentric 7 aligned.
  • the rocker 12 sits in the groove 11 with its cam 13.
  • the toothbrush shown in FIG. 6 is constructed from identical parts to that according to FIGS. 4 and 5.
  • the driver 9 was, however, rotated by 180 ° and pushed onto the eccentric 7.
  • the rocker 12 arrives in a groove 11 together with the toothbrush axis 2 higher position, whereby the longitudinal axis 3 of the toothbrush axis 2 runs offset to the longitudinal axis 20 of the electric motor 4.

Landscapes

  • Health & Medical Sciences (AREA)
  • Dentistry (AREA)
  • Epidemiology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Brushes (AREA)

Abstract

L'invention concerne une brosse à dents électrique dont l'arbre (2) présente un balancier (12) en forme de coulisseau, avec une came radiale (13). Un élément d'entraînement (9) anime le balancier (12) d'un mouvement oscillant. Un excentrique (7) actionne l'élément d'entraînement (9) qui effectue un mouvement de rotation. L'arbre (2) de la brosse vient en contact avec le balancier (12) à l'intérieur d'une gorge (11) de l'élément d'entraînement (9). Ce dernier anime l'arbre (2) de la brosse d'un mouvement alternatif dans le sens de son axe longitudinal (3).
PCT/EP1995/003753 1994-09-24 1995-09-22 Brosse a dents electrique WO1996009019A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU37420/95A AU3742095A (en) 1994-09-24 1995-09-22 Electric toothbrush

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DEP4434187.3 1994-09-24
DE19944434187 DE4434187A1 (de) 1994-09-24 1994-09-24 Elektrische Zahnbürste

Publications (1)

Publication Number Publication Date
WO1996009019A1 true WO1996009019A1 (fr) 1996-03-28

Family

ID=6529119

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP1995/003753 WO1996009019A1 (fr) 1994-09-24 1995-09-22 Brosse a dents electrique

Country Status (3)

Country Link
AU (1) AU3742095A (fr)
DE (1) DE4434187A1 (fr)
WO (1) WO1996009019A1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005043709A1 (fr) 2003-11-04 2005-05-12 Glaxo Group Limited Brosse a dents
US6952854B2 (en) 2001-11-06 2005-10-11 The Procter & Gamble Company Complex motion toothbrush
US7234187B2 (en) 1998-09-30 2007-06-26 Church & Dwight Co., Inc. Electric toothbrush
US7322066B2 (en) 2003-07-16 2008-01-29 Church & Dwight Co., Inc. Electric toothbrushes having movable, intermittently movable, and fixed bristles
US7356866B2 (en) 2002-06-11 2008-04-15 Church & Dwight Co., Inc. Modular electric toothbrushes
US7570018B2 (en) 2005-02-07 2009-08-04 Colgate-Palmolive Co. Rechargeable powered device

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10118013A1 (de) * 2001-04-10 2002-10-17 Coronet Werke Gmbh Bürste

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0327876A1 (fr) * 1988-02-06 1989-08-16 BAUSCH & LOMB INCORPORATED Brosse à dents électrique
EP0357863A1 (fr) * 1988-09-09 1990-03-14 BAUSCH & LOMB INCORPORATED Brosse à dents électrique
EP0585738A1 (fr) * 1992-08-31 1994-03-09 Seikosha Co., Ltd. Brosse à dents motorisée

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62196463A (ja) * 1986-02-21 1987-08-29 Matsushita Electric Works Ltd 伝動装置
DE3920942A1 (de) * 1989-06-27 1991-01-10 Rowenta Werke Gmbh Bewegungswandler fuer elektromotorisch angetriebene kleingeraete
DE9101076U1 (de) * 1991-01-31 1992-05-27 Elektro-Wärme-Technik Siegfried Petz, Inh. Günter Petz, 90431 Nürnberg Elektrische Zahnbürste

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0327876A1 (fr) * 1988-02-06 1989-08-16 BAUSCH & LOMB INCORPORATED Brosse à dents électrique
EP0357863A1 (fr) * 1988-09-09 1990-03-14 BAUSCH & LOMB INCORPORATED Brosse à dents électrique
EP0585738A1 (fr) * 1992-08-31 1994-03-09 Seikosha Co., Ltd. Brosse à dents motorisée

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7234187B2 (en) 1998-09-30 2007-06-26 Church & Dwight Co., Inc. Electric toothbrush
US6952854B2 (en) 2001-11-06 2005-10-11 The Procter & Gamble Company Complex motion toothbrush
US7451514B2 (en) 2001-11-06 2008-11-18 The Procter & Gamble Company Complex motion toothbrush
US7356866B2 (en) 2002-06-11 2008-04-15 Church & Dwight Co., Inc. Modular electric toothbrushes
US7322066B2 (en) 2003-07-16 2008-01-29 Church & Dwight Co., Inc. Electric toothbrushes having movable, intermittently movable, and fixed bristles
WO2005043709A1 (fr) 2003-11-04 2005-05-12 Glaxo Group Limited Brosse a dents
JP2007509669A (ja) * 2003-11-04 2007-04-19 グラクソ　グループ　リミテッド 歯ブラシ
US7696728B2 (en) 2003-11-04 2010-04-13 Glaxo Group Limited Toothbrush
JP4843495B2 (ja) * 2003-11-04 2011-12-21 グラクソ グループ リミテッド 歯ブラシ装置及びその充電ユニット
US7570018B2 (en) 2005-02-07 2009-08-04 Colgate-Palmolive Co. Rechargeable powered device

Also Published As

Publication number Publication date
AU3742095A (en) 1996-04-09
DE4434187A1 (de) 1996-03-28

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