Piezoelectric vibrator
US7352117B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 2, 2006 |
| Grant date | Apr 1, 2008 |
| Priority date | — |
| Expiry date | Feb 14, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03H9/215
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A tuning fork type piezoelectric vibrator is provided with vibrating arms which can improve shock resistance while suppressing a CI value to a small value. A first groove (base end side) and a second groove (tip side) extend along a longitudinal direction from a base end of the vibrating arm and are formed on at least one of a front surface or a back surface of the vibrating arms. Then, a ratio L2/L1 which is the ratio of a length L2 of the first groove to a length L1 from the base end of the vibrating arm to the tip of the second groove, is set between 0.35 and 0.65, and a ratio d/L1 which is the ratio of a space d between the first groove and the second groove to the length L1 from the base end of the vibrating arm to the tip of the second groove, is set between 0.010 and 0.016.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.