To provide a piezoelectric resonator that can achieve stable vibration and a stable vibration frequency in a vibrating arm section by preventing a weight section not from following the vibration (amplitude) of the vibrating arm section but from having vibration different from the vibration of the vibration arm.
A piezoelectric resonator piece includes an intermediate weight section 4 formed to have an arm width W1 larger (thicker) than the arm width W of the vibrating arm section 3 and smaller (thinner) than the arm width W2 of the tip weight section 5, thereby letting the intermediate weight section 4 follow the vibration (the amplitude) of the vibrating arm section 3. Further, the tip weight section 5 formed to have an arm width W2 larger (thicker) than the arm width W1 of the intermediate weight section 4 is provided, thereby letting the tip weight section 5 follow the vibration (the amplitude) of the vibrating arm section 3 and the intermediate weight section 4. Thus, the vibration characteristics of the vibrating arm section 3 can be stabilized.
| JP2009201162A | 2009-09-03 | |||
| JP2009021773A | 2009-01-29 | |||
| JP2009284219A | 2009-12-03 |
Osamu Suzawa
Kazuhiko Miyasaka
Next Patent: PIEZOELECTRIC VIBRATION PIECE AND PIEZOELECTRIC DEVICE