Title:
ELECTRIC TOOTHBRUSH
Document Type and Number:
WIPO Patent Application WO/2004/049861
Kind Code:
A1
Abstract:
A disk-like brush body of an electric toothbrush is reciprocally rotated about an axis intersecting at a predetermined angle a line extended in a length direction of a grip portion of the electric toothbrush. A head portion that is put in user’s mouth is made smaller or thinner, a rotation shaft of the brush body and the head portion are made tiltable to any angle relative to the grip portion, and transmission efficiency of a drive force is enhanced. To achieve them, an eccentric member with an eccentric shaft is fixed to a drive shaft of a motor, a joint portion formed at a first end portion of a lever member is brought into point-contact with the eccentric shaft, and rotating motion of the eccentric shaft is converted into oscillating motion of the first end portion of the lever member. Rotating motion of a second end portion of the lever member is converted into reciprocal rotating motion of the brush body by engaging a groove provided in the second end portion of the lever member and a pin provided at the brush body.
Inventors:
NARUSE HARUHIKO (JP)
GANSE KEIZO (JP)
KAJIWARA MASANORI (JP)
GANSE KEIZO (JP)
KAJIWARA MASANORI (JP)
Application Number:
PCT/JP2003/014406
Publication Date:
June 17, 2004
Filing Date:
November 12, 2003
Export Citation:
Assignee:
MATSUSHITA ELECTRIC WORKS LTD (JP)
NARUSE HARUHIKO (JP)
GANSE KEIZO (JP)
KAJIWARA MASANORI (JP)
NARUSE HARUHIKO (JP)
GANSE KEIZO (JP)
KAJIWARA MASANORI (JP)
International Classes:
A46B13/02; A61C17/34; (IPC1-7): A46B13/02
Foreign References:
| JP2001276097A | 2001-10-09 | |||
| US5862558A | 1999-01-26 | |||
| US6349442B1 | 2002-02-26 |
Attorney, Agent or Firm:
Itaya, Yasuo (Matsusaka & Associates Tokushima Bldg.,
9-10, Minamisemba 3-chome, Chuo-k, Osaka-shi Osaka, JP)
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