Ultrasonic motor and lens driving apparatus
AssigneeCanon Kabushiki Kaisha
InventorsRyo Yamasaki, Makoto Oikawa
Life of this patent
Estimating the term…
Abstract
An ultrasonic motor includes a vibrator configured to generate an elliptical vibration, a driven member configured to be driven by the vibrator, wherein the driven member is driven according to the elliptical vibration of the vibrator, a holding unit configured to hold the vibrator, and a pressure unit configured to press the vibrator against the driven member, wherein the holding unit includes a first holding member configured to hold the vibrator, and a second holding member configured to press the vibrator against the driven member, and wherein the first holding member and the second holding member are relatively movable in a direction perpendicular to a contact surface of the driven member with the vibrator.
Claims18
A motor comprising:
- a vibrator configured to generate a vibration;
- a relatively movable member configured to be movable by the vibrator, wherein the relatively movable member is movable relatively according to the vibration of the vibrator;
- a holding unit configured to hold the vibrator;
- and
- a pressure unit configured to press the vibrator against the relatively movable member,
- wherein the holding unit includes a first holding member configured to hold the vibrator, and a second holding member configured to press the vibrator against the relatively movable member, and
- wherein the second holding member is relatively movable in relation to the first holding member in a direction perpendicular to a contact surface of the relatively movable member with the vibrator.
A motor comprising:
- a vibrator configured to generate a vibration;
- a relatively movable member configured to be movable by the vibrator, wherein the relatively movable member is movable relatively according to the vibration of the vibrator;
- a holding unit configured to hold the vibrator;
- and
- a pressure unit configured to press the vibrator against the relatively movable member,
- wherein the holding unit includes a first holding member configured to hold the vibrator, and a second holding member configured to press the vibrator against the relatively movable member, and
- wherein the first holding member is able to incline relative to a contact surface of the relatively movable member with the vibrator and the second holding member is relatively movable in the direction perpendicular to the contact surface of the relatively movable member with the vibrator.
Dependencies are inferred from the claim text.