Title:
ELECTRIC TOOTHBRUSH
Document Type and Number:
WIPO Patent Application WO/2019/138330
Kind Code:
A1
Abstract:
A toothbrush attachment(100) for detachable attachment to a motor drive unit of an electric toothbrush, wherein the toothbrush attachment(100) comprises a main housing(110) comprising a tubular neck portion(213) having a longitudinal axis(X-X') and a head portion(215) defining a toothbrush receptacle(216), a toothbrush head(200) rotatably mounted on the toothbrush receptacle(216) of the head portion(215) and a rotatable brush axis(Z-Z '), and a drive coupling mechanism(280) mounted inside the neck portion(213) and having a rotation axis(Y-Y '); wherein the driving coupling mechanism(280) comprises a crank shaft(230), a bushing device(240) and a coupling shaft portion; wherein the coupling shaft portion comprises at an axial free end with an engagement means, wherein the crank shaft(230) is for driving the toothbrush head(200) to rotate reciprocally about the brush axis(Z-Z '), and wherein the coupling shaft portion and the crank shaft(230) are integrally molded together as a unitary member and the crank shaft(230) is rotatably mounted on the bushing device(240).
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Inventors:
LAM LAI YUNG (CN)
Application Number:
PCT/IB2019/050147
Publication Date:
July 18, 2019
Filing Date:
January 09, 2019
Export Citation:
Assignee:
LIFE WORKS PRODUCTS LTD (CN)
International Classes:
A61C17/34
Foreign References:
| KR101631845B1 | 2016-06-23 | |||
| US6446294B1 | 2002-09-10 | |||
| US20040019987A1 | 2004-02-05 | |||
| DE20004597U1 | 2001-08-02 | |||
| EP0968686A1 | 2000-01-05 | |||
| CN2558353Y | 2003-07-02 | |||
| CN206007392U | 2017-03-15 |
Attorney, Agent or Firm:
YOU YI INTERNATIONAL INTELLECTUAL PROPERTY SERVICES LIMITED (CN)
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