Vibration-type actuator, rotary drive device, and image pickup apparatus
CN114123855BActive Publication Date: 2026-07-03CANON KK
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Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- CANON KK
- Filing Date
- 2021-08-24
- Publication Date
- 2026-07-03
AI Technical Summary
Technical Problem
In existing vibration actuators used in rotary drive equipment, the wear of the vibrator and the driven component increases, resulting in a shortened lifespan. Furthermore, they are prone to generating wear powder and suffer from a loss of driving force.
Method used
By tilting the vibrator at a certain angle to the contact surface, it rotates around an axis parallel to the direction of the driving force, reducing the sideslip of the friction components relative to the vibrator, and stably transmitting the driving force through the pressurizing mechanism.
Benefits of technology
It effectively reduces the loss of driving force, reduces wear, extends equipment life, and reduces the generation of wear powder.
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Smart Images
Figure CN114123855B_ABST
Abstract
A vibration type actuator includes a vibrator including a protruding portion and a piezoelectric element, the vibrator being configured to vibrate in response to a voltage, and a contact member having a contact surface in contact with the protruding portion. The vibrator and the contact member are rotated relative to each other about a first axis. The vibrator is inclined to the contact surface by a predetermined angle.
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