Loading patent…
AssigneeMatsushita Electric Works, Ltd.
InventorsHiroaki Shimizu, Ryo Motohashi, Hidekazu Yabuuchi, Takahiro Nishinaka, Katsuhiro Hirata, Yuya Hasegawa
Estimating the term…
A reciprocal linear driving unit and a rolling driving unit are adjacently provided on a common single shaft in axial direction thereof, so that the reciprocal linear driving in the axial direction and the rolling driving around the axis are performed by the single shaft, simultaneously. Permanent magnets constituting the reciprocal linear driving unit and the rolling driving unit are respectively provided on moving object side instead of stator, in other words, they are provided around the axis of the shaft, thereby respective permanent magnets can be miniaturized and light-weighted. Following to this, miniaturization, light-weighting and cost reduction of an actuator and a power toothbrush using the same can be realized.
An actuator capable of reciprocal linear driving and rolling driving comprising a reciprocal linear driving unit and a rolling driving unit which are arranged to adjoin in axial direction of a shaft;
The actuator capable of reciprocal linear driving and rolling driving described in claim I characterized by that the second moving object has a length in a region where the reciprocal linear driving can be performed in the axial direction of the shaft by which a clearance between the second permanent magnet and the second stationary yoke is held constant.
A power toothbrush using an actuator enabling reciprocal linear driving and rolling driving comprising:
Dependencies are inferred from the claim text.