压电振动器

Abstract

课题为:将压电振动片更加稳定地接合,使对于外力的位移量变小。解决方案为:压电振动片(6)从基部(8)延伸设置有1对振动臂部(7),并且具备从基部在振动臂部的两外侧并排地延伸设置的支撑臂部(9)。而且,压电振动片利用2条支撑臂部接合到封装件内的安装部(14)上,从而固定保持。两支撑臂部的接合部位设为长度方向的2个部位以上。在长度方向,使基部侧的接合部位比压电振动片的重心(G)更靠基部侧。由此能缩短从接合点到振动臂部的前端的长度,对于来自外部的冲击能减小在振动臂部前端的位移量。其另一方面为了抑制从振动臂部的振动泄漏,在长度方向,使基部侧的接合部位比基部与支撑臂部的连结部(81)更靠重心(G)侧。
A piezoelectric vibrator element is more stably bonded to reduce the displacement with respect to an external force. The piezoelectric vibrator element 6 is provided with a pair of vibrating arm parts 7 extending from a base 8, and support arm parts 9 extending from the base on both outer sides of the vibrating arm parts in parallel thereto. Further, the piezoelectric vibrator element is bonded on a mounting part 14 in the package with the pair of support arm parts to thereby be fixedly held. Two or more bonding regions of each of the support arm parts are disposed in the longitudinal direction. In the longitudinal direction, the bonding region on the base side is disposed on the base side of the centroid G of the piezoelectric vibrator element. Thus, the length from the bonding point to the tip of the vibrating arm part can be shortened, and the displacement at the tip of the vibrating arm part can be reduced with respect to an impact from the outside. On the other hand, in order to suppress the vibration leakage from the vibrating arm part, the bonding region located on the base side is disposed on the centroid G side of a connection part 81 between the base and the support arm part.

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