Vibration-type actuator with vibration body and contact body relatively moving, apparatus, multi-axis stage unit, and articulated robot
US11290031B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 27, 2020 |
| Grant date | Mar 29, 2022 |
| Priority date | — |
| Expiry date | Sep 11, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02N2/026
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A vibration-type actuator that can suppress variation in pressing force and reaction force on vibration bodies and contact bodies includes vibration body units, each including a vibration body including an elastic body and an electro-mechanical energy conversion element, and a contact body contacting with the vibration bodies, with the contact body and the vibration bodies moving relatively in a predetermined direction. A first vibration body unit, from among the vibration body units, includes a restriction unit configured to fix the first vibration body unit and restrict a degree of freedom in the predetermined direction, and a second vibration body unit, from among the vibration body units, includes a supporting guide unit configured to support the second vibration body unit while the second vibration body unit is movable in a direction orthogonal to the predetermined direction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.