Ultrasonic driving device

Details Ultrasonic driving device Ultrasonic driving device

H - Electricity

01

L

310/2

H01L 41/09 (2006.01)

Patent

CA 1301230

ABSTRACT OF THE DISCLOSURE A stator includes piezoelectric vibrators of piezo- electric ceramic put between a long metal block and a short metal block, which are fixed with screw threads at the oppo- site ends of a bolt. When a high frequency alternating cur- rent voltage is applied to the piezoelectric vibrators, elliptic compounded vibration, progressive vibration and so on, which is torsional vibration due to the screw threads of the bolt compounded with longitudinal vibration due to the expansion and contraction of the piezoelectric vibrators, is generated on the end surface and the side surface of the stator. A driven member is engaged on the end surface or the side surface of the stator and is driven by the elliptic vibration.

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