Vibratory linear actuator and method of driving the same
AssigneeMatsushita Electric Works, Ltd.
InventorsTakeshi Shiba, Kiyotaka Ootsuka, Masao Tanahashi
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Abstract
A vibratory linear actuator employs a reciprocating type motor for reciprocatingly driving several movable components at the same frequency and in opposite phase relations with each other. Both movable components are mechanically connected so as to transmit vibration from one to the other by reversing the direction of the vibration thereof. By this arrangement, the opposite phase relation between both movable components is mechanically insured. As a result, since the opposite phase relation between movable components can be maintained even when an external disturbance is applied thereto, the whole vibration system is stable against external disturbances.
Claims23
A vibratory linear actuator comprising:
- a reciprocating motor having a stationary component and a plurality of movable components capable of reciprocating vibrations, said plurality of movable components vibrating reciprocatingly relative to said stationary component at a same frequency and in opposite phase relations with each other, the reciprocating vibrations generated by an electromagnetic source;
- and
- a link mechanism which connects both movable components to transmit vibration of one of said plurality of movable components to another of said plurality of movable components by reversing a vibration direction thereof said link mechanism causing said movable components to vibrate in opposite phase.
A vibratory linear actuator comprising:
- a reciprocating motor which is provided with a stationary component including an electromagnetic member;
- a plurality of movable components each including a permanent magnet, said plurality of movable components being arranged in parallel to each other and each supported by a spring mechanism, so as to vibrate reciprocatingly, said plurality of movable components positioned to confront the stationary component and being spaced from the stationary component by a gap, the stationary component generating electromagnetic energy for periodically vibrating said plurality of movable components;
- at least one connection spring coupling two adjacent movable components to establish an energy transmitting connection between said adjacent movable components, said at least one connection spring forming a vibration system together with the spring mechanism;
- said vibration system having a first vibration mode in which the two adjacent movable components vibrate in an opposite phase and a second vibration mode in which the two adjacent movable components vibrate in a same phase;
- and
- a link mechanism that links said plurality of movable components to cause the movable components to vibrate in the first vibration mode.
Dependencies are inferred from the claim text.