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US 11,888,416 B2Granted
Piezoelectric drive device and robot
AssigneeSeiko Epson Corporation
InventorsYuichiro Tsuyuki, Yutaka Arakawa
Life of this patent
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Abstract
A piezoelectric drive device includes two vibrators having vibrating portions with piezoelectric elements and transmitting portions placed in the vibrating portions and transmitting drive forces to a driven member (e.g. a slider), and a fixing portion having through holes (first through hole, second through hole) into which pins or screws are inserted. The two vibrators are placed adjoiningly along a drive direction of the slider, and the fixing portion is placed between the two vibrators and fixing the two vibrators.
Claims6
A piezoelectric drive device comprising:
- two vibrators having vibrating portions having piezoelectric elements and transmitting portions placed in the vibrating portions and transmitting drive forces to a driven member;
- and
- a fixing portion having a through hole into which a pin or a screw is inserted, wherein
- the two vibrators are placed next to each other along a drive direction of the driven member, and
- the fixing portion is placed between the two vibrators and fixing the two vibrators.
2 more elements
Dependencies are inferred from the claim text.