| US 7,495,358 B2 | ||
| Vibratory linear actuator and electric toothbrush using the same | ||
| Noboru Kobayashi, Omihachiman (Japan); Takahiro Nishinaka, Omihachiman (Japan); Kensaku Kanada, Hikone (Japan); Hiroaki Shimizu, Hikone (Japan); Ryo Motohashi, Hikone (Japan); and Hidekazu Yabuuchi, Hikone (Japan) | ||
| Assigned to Panasonic Electric Works Co., Ltd., Osaka (Japan) | ||
| Filed on Jan. 12, 2006, as Appl. No. 11/330,202. | ||
| Claims priority of application No. 2005-012084 (JP), filed on Jan. 19, 2005. | ||
| Prior Publication US 2006/0158048 A1, Jul. 20, 2006 | ||
| Int. Cl. H02K 33/00 (2006.01) | ||
| U.S. Cl. 310—36 [310/15; 310/17; 15/22.1; 15/22.2] | 20 Claims |
| 1. A vibratory linear actuator comprising:
a stator having a through hole therein and a winding wire therearound,
a movable member having a through hole therein and a member made of a magnetic material, said movable member being provided
inside said through hole of said stator, so as to reciprocate in an axis direction upon an application of electric current
to said winding wire,
a shaft inserted into said through hole of said movable member so as to be movable reciprocally in relation to said movable
member, and
a coordinating member that enables said shaft to reciprocate in opposite phase to said movable member.
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