Vibration-type actuator and imaging apparatus

摘要

A vibration-type actuator includes a vibration member, a driven member configured to move relative to the vibration member by a vibration of the vibration member, an output member connected to the driven member, a shaft inserted in a through-hole in the vibration member, a fixing member coupled to the shaft and configured to support the output member, and a coil spring provided between the driven member and the output member and configured to bring the driven member into pressure contact with the vibration member. The coil spring includes, at an end portion thereof, a first end turn portion with a plural number of turns. The coil spring is connected to the output member at the first end turn portion. The thickness of the first end turn portion is greater than a gap between the driven member and the output member.

主权项

1. A vibration-type actuator comprising:
a vibration member; a driven member configured to move relative to the vibration member by a vibration of the vibration member; an output member connected to the driven member; a shaft inserted in a through-hole in the vibration member; a fixing member coupled to the shaft and configured to support the output member; and a coil spring provided between the driven member and the output member and configured to bring the driven member into pressure contact with the vibration member, wherein the coil spring includes, at an end portion thereof, a first end turn portion with a plural number of turns, wherein the coil spring is connected to the output member at the first end turn portion, and wherein a thickness of the first end turn portion is greater than a gap between the driven member and the output member.