| 摘要 |
PURPOSE:To attain stable fT characteristics and frequency change characteristics due to the lapse of time, by providing a recessed part to a base of a tuning fork type oscillator and supporting the oscillator between the recessed part and the base, for decreasing the leakage of vibration to a case. CONSTITUTION:Bases A-B-...-E-F of the tuning fork type oscillator using torsional vibration are provided with recessed parts N-Q-R-P (or L-J-H-I-K-M), and a support 122 (or 132) serving also as a lead is fixed between the recessed part and the base and fixed to a case (not shown). The torsional vibration at the base (H-I) is decreased in comparison with the case without the provision of the recessed parts, and the leakage of the vibration to the case is decreased, because the oscillator is supported between the recessed part and the base. Further, the leakage of vibration is prevented further by forming the support into a U shape in the broadwise direction as the support 142. |
