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US 2019/0386583 A1Published application
Vibration wave motor and apparatus incorporating same
AssigneeCanon Kabushiki Kaisha
InventorAkira Shimada
Life of this patent
Estimating the term…
Abstract
A vibration wave motor includes a rotational shaft body, an electrical-mechanical energy conversion element, a first elastic body that is fitted into the rotational shaft body and configured to vibrate by the electrical-mechanical energy conversion element, a positioning member configured to position the rotational shaft body in a rotation axis direction of the rotational shaft body, and a connection member configured to connect the first elastic body to the positioning member.
Claims12
A vibration wave motor comprising:
- a rotational shaft body;
- an electrical-mechanical energy conversion element;
- a first elastic body that is fitted into the rotational shaft body in an axially rotatable manner and configured to vibrate by the electrical-mechanical energy conversion element;
- a driven member that is rotated about a rotation axis of the rotational shaft body by vibration of the first elastic body;
- a fixing member configured to fix the rotational shaft body and the driven member;
- a positioning member that is fitted into the rotational shaft body in an axially rotatable manner and configured to position the rotational shaft body in a rotation axis direction of the rotational shaft body;
- and
- a connection member configured to connect the first elastic body to the positioning member.
5 more elements
The vibration wave motor according to 1, further comprising:
- a second elastic body that is fitted into the first elastic body and sandwiches the electrical-mechanical energy conversion element together with the first elastic body;
- and
- a fastening member configured to fasten the electrical-mechanical energy conversion element and the second elastic body to the first elastic body.
An apparatus comprising:
- a vibration wave motor comprising:
- a rotational shaft body;
- an electrical-mechanical energy conversion element;
- a first elastic body that is fitted into the rotational shaft body in an axially rotatable manner and configured to vibrate by the electrical-mechanical energy conversion element;
- a driven member that is rotated about a rotation axis of the rotational shaft body by vibration of the first elastic body;
- a fixing member configured to fix the rotational shaft body and the driven member;
- a positioning member that is fitted into the rotational shaft body in an axially rotatable manner and configured to position the rotational shaft body in a rotation axis direction of the rotational shaft body;
- and
- a connection member configured to connect the first elastic body to the positioning member;
- and
- a driven body configured to be driven by the vibration wave motor.
8 more elements
Dependencies are inferred from the claim text.