Piezoelectric vibrator, manufacturing method thereof and linear actuator having the same
US7915788B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 5, 2006 |
| Grant date | Mar 29, 2011 |
| Priority date | — |
| Expiry date | May 23, 2027 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10N30/50
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The piezoelectric vibrator includes the piezoelectric bar having a plurality of piezoelectric plates alternately stacked and a plurality of vibration sectors divided vertically and horizontally with respect to the direction in which the piezoelectric plates are stacked. Electrode terminals are formed on each of surface regions of the piezoelectric plate, divided in a longitudinal direction thereof, and jump terminals corresponding to electrode terminals are formed on a surface of an adjacent one of the piezoelectric plates. On side surfaces of the piezoelectric plates, a plurality of side electrodes are formed, connecting the electrode terminals and the corresponding jump terminals to power the vibration sectors, by which a pair of the vibration sectors diagonally disposed from each other are simultaneously powered. The piezoelectric vibrator is small and easily manufactured and mass-produced with a simple structure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.