Actuator using electromechanical transducer capable of being used in high temperature and high humidity environment and apparatus having the same
US6211602A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 23, 1998 |
| Grant date | Apr 3, 2001 |
| Priority date | — |
| Expiry date | Jun 23, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02N2/025
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An actuator using an electromechanical transducer capable of maintaining stable driving function even under a severe environment of high temperature and/or high humidity, or the like, and an apparatus mounted with the actuator. The actuator are disclosed is constituted to move a slider block frictionally coupled to a drive shaft in a predetermined direction by reciprocating oscillation having different speeds of the drive shaft driven by elongation and contraction displacements of a piezoelectric element and the piezoelectric element, a portion where the piezoelectric element is coupled to the drive shaft and a portion where the piezoelectric element is coupled to a frame is sealed by silicone resin, fluorinated resin or the like to thereby protect them from the high temperature and/or high humidity environment.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.