| 摘要 |
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 transmit vibration, and an oral hygiene device using the same.
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