Vibration actuator and driving apparatus
US5859490A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Sep 22, 1997 |
| Grant date | Jan 12, 1999 |
| Priority date | — |
| Expiry date | Sep 22, 2017 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02N2/026
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A vibration actuator for use with a relative moving element includes a plate shaped elastic member. An electro-mechanical conversion element is attached to an upper surface of the elastic member. The electro-mechanical conversion element generates longitudinal and bending vibrations in the elastic member such that a side surface of the elastic member constitutes a neutral surface of the vibrations. A driving force output member is disposed at a bottom surface of the elastic member, and contacts the relative moving element. An extension member is disposed at the side surface of the extension member. A pressing force is applied by the extension member to the driving force output member to press the driving force output member toward the relative moving element.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.