Vibration actuator having a supporting member to support a vibra

Details Vibration actuator having a supporting member to support a vibra Vibration actuator having a supporting member to support a vibra

1998-09-22

2000-08-15

Dougherty, Thomas M.

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

310328, H02N 200

Patent

active

061041238

ABSTRACT:
A vibration actuator having improved drive efficiency by preventing the generation of noise and unnecessary vibrations. The vibration actuator includes a vibration member to generate vibration in contact with a relative movement member and a supporting member to support the vibration member. The supporting member includes a plurality of position determining members in contact with vibration member at different locations. At least one of the plurality of position determining members provides the vibration member with an energy imparting force.

REFERENCES:
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patent: 5101132 (1992-03-01), Yamaguchi
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patent: 5140215 (1992-08-01), Yamaguchi
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patent: 5698930 (1997-12-01), Takaji
Ultrasonic Motors, Theory and Applications, "Rectangular Plate Motors", .sctn.4.5, pp. 131-135 and "Linear Motors" .sctn.5.3.6., pp. 191-196, by S. Ueha, et al., Oxford University Press, New York, New York (1993). (English translation attached).
Excerpt from White Series No. 132 "Ultrasonic Motors", ed. Torikeppsu, dated Dec. 20, 1991, pp. 145-146. (English translation attached).
"Piezoelectric Linear Motors for Application to Driving a Light Pick-up Element", Y. Tomikawa, et al., 5th Symposiusm on Dynamics Related to Electromagnetic Force, Collected Papers: Joint Auspices of Japan Mechanical Society, Electrical Society, and Japan AEM Society, Jun. 9-11, 1993, Hitachi City, Japan, pp. 393-398.

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