Ultrasonic motor

Details Ultrasonic motor Ultrasonic motor

1996-05-15

1998-12-29

Budd, Mark O.

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

310 82, H01L 4108

Patent

active

058545280

ABSTRACT:
An ultrasonic motor has a vibrating body 3 and a moving body 11 supported by a supporting component 7. A rounded lower end of the supporting component is supported in a tapered dent of a supporting base 10, and therefore when a side pressure is applied, it inclines to the supporting base so as to keep the contact between the vibrating body and moving body stable. As a result, a stable motor rotation is always obtained regardless of side pressure. A lead wire 8 is held between a metal elastic element 1 and supporting component, and is pressed against the elastic element. Hence, the lead wire, through contact with the elastic element, is electrically coupled to the common electrode on the upper surface of a piezoelectric element without soldering and without use of conductive resin.

REFERENCES:
patent: 4959579 (1990-09-01), Kuwabara et al.
patent: 5448127 (1995-09-01), Kanazawa
patent: 5451827 (1995-09-01), Takagi
patent: 5471108 (1995-11-01), Guyomar et al.
patent: 5521455 (1996-05-01), Miyazawa et al.

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