VIBRATION-TYPE ACTUATOR, ELECTRONIC DEVICE, AND OPTICAL DEVICE
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United States of America Patent
Stats
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N/A
Issued Date -
Nov 23, 2023
app pub date -
May 18, 2023
filing date -
May 20, 2022
priority date (Note) -
Published
status (Latency Note)
Importance
Abstract
A vibration-type actuator includes a vibration body including an electric-mechanical energy conversion element with a lead content of 1000 ppm or less, and an elastic body having a plate portion and protrusions protruding in a direction intersecting with a main surface of the plate portion, and a contact body in contact with the protrusions. The vibration body and the contact body are relatively moved by vibration of the vibration body. The vibration-type actuator further comprises a pressure member pressing the vibration body against the contact body and a foamed member arranged between the pressure member and the vibration body. The foamed member contains, as a main skeleton, a siloxane bond including silicon and oxygen, and an average equivalent circle diameter of bubbles contained in the foamed member is greater than 120 μm.
First Claim
Other Claims data not available