Patent ID: 9219429
Filing Date: 2015-12-22
Classification: G02B,H01L,H02N

Abstract:
1. A linear ultrasonic motor comprising: a vibrator, the vibrator having a piezoelectric element; a movable part, the movable part applying a pressurization force to the vibrator and bringing the vibrator into pressurized contact with a base part; a cover part, the cover part being fixed to the base part; a rolling part being rollably held between a movable guide part of the movable part and a cover guide part of the cover part, the movable guide part extending in a movable direction and the cover guide part extending in the movable direction; and a body to be driven, the body to be driven having a transmission member that is pivotably supported and being able to move only in the movable direction, wherein: the transmission member comprises a bias part that abuts on a transmission part of the movable part and applies a biasing force of biasing the movable part to the rolling part, to the transmission part, and the rolling part is held by a resultant force of the pressurization force or a reaction force of the pressurization force, and the biasing force.