Vibration actuator

Details Vibration actuator Vibration actuator

1996-06-07

1999-02-09

Dougherty, Thomas M.

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

310333, H02N 200

Patent

active

058699171

ABSTRACT:
An ultrasonic vibration actuator on which polishing treatment of the driving surface of the elastic member can easily be performed, and which can be accurately assembled. The ultrasonic vibration actuator is equipped with a support member, and an elastic member, which is established about the external surface of the support member and in addition maintains piezoelectric elements. The elastic member generates a driving force in a driving surface which is an end surface thereof, and a relative moving member, which is in compressive contact with the elastic member at the driving surface, is caused to move. Fixing members, which penetrate the support member and the elastic member and which fix the support member and the elastic member, are also provided. The support member, in a position including a plane between the driving surface and the fixing member, is freely separable into a first support member and a second support member.

REFERENCES:
patent: 4947076 (1990-08-01), Kumada
patent: 4965482 (1990-10-01), Ohnishi et al.
patent: 5051647 (1991-09-01), Uchikawa et al.
patent: 5410204 (1995-04-01), Imbayashi et al.
patent: 5600196 (1997-02-01), Tamai
U. S. application No. 08/391,464, Takagi et al., filed Feb. 21, 1995.
U. S. application No. 08/408,305, Takagi et al., filed Mar. 22, 1995.

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