Vibrationsaktuator, Elektronische Vorrichtung und Optische Vorrichtung

Details

Veröffentlichungs-Nr.

EP4280853

Aktenzeichen

EP23174108

Anmeldetag

17. Mai 2023

Veröffentlichung

19. März 2025

Erteilung

19. März 2025

Rechtsraum

EP

IPC

H10N30/00H10N30/30H10N30/80H10N30/853

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.

Anmelder

Firma

CANON KABUSHIKI KAISHA

Land

🇯🇵 Japan

Fachgebiete