Patent ID: 7586237

Claim:
A piezoelectric vibrator, comprising: a flat plate piezoelectric element, the piezoelectric vibrator vibrating in a mixed mode of stretching vibration that generates a displacement in a first direction within a plane of the piezoelectric element and a bending vibration that generates a displacement in a second direction orthogonal to the first direction; a vibrating member provided with the piezoelectric element and vibrated by applying voltage on the piezoelectric element; a support member provided on the vibrating member to support the vibrating member in a vibratable manner, the support member being provided on an outer edge of the vibrating member at a position adjacent to an anti-node that is not at a free end of the bending vibration, the support member including a first support section extending in a direction approximately orthogonal to the first direction and a second support section extending in a direction approximately orthogonal to the direction in which the first support section extends; and a fixing portion provided on the support member to be fixed on an object on which the piezoelectric vibrator is attached; wherein the first support section includes portions having different rigidity, the portions including a first rigid portion adjacent to the vibrating member and a second rigid portion having less rigidity than the first rigid portion.