Patent ID: 7134335

Claim:
A vibratory gyro piezoelectric vibrator comprising: a vibrating body having a laminate of piezoelectric layers stacked in a lamination direction and having a length extending in the lamination direction, the vibratory gyro piezoelectric vibrator using longitudinal piezoelectric effects of the piezoelectric layers; and an oscillator electrically connected to the vibrating body; wherein electric signals produced by the oscillator and supplied to the vibrating body excite a first bending vibration in which the vibrating body bends in a width direction of the vibrating body perpendicular to the lamination direction of the piezoelectric layers; a Coriolis force is caused in response to the first bending vibration such that a second bending vibration is excited in which the vibrating body bends in a thickness direction of the vibrating body perpendicular to both of the lamination direction and the vibration direction of the first bending vibration; and while one of the first bending vibration and the second bending vibration is being excited, an electric signal caused by the other of the first bending vibration and the second bending vibration is output so as to be detectable by a detecting device.