| 摘要 |
PURPOSE:To obtain an excellent vibrating characteristic by providing an external supporting frame so as to surround a longitudinal vibration type piezoelectric vibrator thereby preventing leaked vibration from being delivered directly. CONSTITUTION:A main vibration part 20 is supported with a support comprising a support connecting part 21, a supporting arm 22 and a supporting base 23 and constitutes the longitudinal vibration type piezoelectric vibrator 24. Moreover, the external supporting frame 25 is formed so as to surround the vibrator 24. Those parts above are formed incorporatedly by the photoetching processing. Through the constitution above, it is possible to prolong the distance from the main vibration part 20 to a fixed position to a fixed member 26. As a result, the leaked vibration of the main vibration part 20 is prevented from being delivered directly to the case and the excellent vibration characteristic is obtained. |
