Vibration generating device and oral hygiene device using same

Details Vibration generating device and oral hygiene device using same Vibration generating device and oral hygiene device using same

A - Human Necessities

61

C

A61C 17/34 (2006.01) A46B 13/02 (2006.01) B06B 1/04 (2006.01) B06B 1/16 (2006.01)

Patent

CA 2249376

An oral hygiene device comprises a rotating body 22 mounted to a rotating shaft 21 of an electric motor 14, an output shaft 11 resiliently supported via a resonance pin 25 to be swingable finely, a drive magnetic body 23 provided on the rotating body 22, and a driven magnetic body 31 provided on the output shaft 11 to face the drive magnetic body 23 so as to be out of contact therewith. The drive magnetic body 23 and the driven magnetic body 31 are composed of permanent magnets, and as the rotating body 22 revolves, a varying magnetic field is generated between the both magnetic bodies 23, 31 to cause vibration of the output shaft 11 at high speed. In this manner, there are provided a vibration generating device, which can be manufactured at low cost and efficiently transmits vibration, and an oral hygiene device using the same.

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