Vibration actuator and driving apparatus

Details Vibration actuator and driving apparatus Vibration actuator and driving apparatus

1997-09-22

1999-01-12

Budd, Mark O.

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

H01L 4108

Patent

active

058594906

ABSTRACT:
A vibration actuator for use with a relative moving element includes a plate shaped elastic member. An electro-mechanical conversion element is attached to an upper surface of the elastic member. The electro-mechanical conversion element generates longitudinal and bending vibrations in the elastic member such that a side surface of the elastic member constitutes a neutral surface of the vibrations. A driving force output member is disposed at a bottom surface of the elastic member, and contacts the relative moving element. An extension member is disposed at the side surface of the extension member. A pressing force is applied by the extension member to the driving force output member to press the driving force output member toward the relative moving element.

REFERENCES:
patent: 5101132 (1992-03-01), Yamaguchi
patent: 5136200 (1992-08-01), Takizawa et al.
patent: 5191688 (1993-03-01), Takizawa et al.
Y. Tomikawa et al., "Piezoelectric Linear Motors for Application to Driving a Light Pick-Up Element," Yamagata University, Yamagata, Japan.

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