Piezoelectric vibrator for ultrasonic motor, mounting method and manufacturing method thereof, and standing wave ultrasonic motor

摘要

The piezoelectric vibrator for an ultrasonic motor of the present invention is capable of driving a movable element by generating a longitudinal vibration / bending vibration of the piezoelectric vibrator element, and the piezoelectric vibrator becomes a piezoelectric vibrator element, and is connected to a fixture or a fixture through an elastic member. It is joined with the mounting member which has a means to make it. Since the piezoelectric vibrator for the ultrasonic motor does not deteriorate the resonance characteristics of the piezoelectric vibrator element, the ultrasonic motor can be operated with high efficiency. In addition, since the piezoelectric vibrator is assembled into the ultrasonic motor more easily and stably than in the related art, the stability and reliability of the motor operation are remarkably improved.;The ultrasonic motor of the present invention includes a piezoelectric vibrator having an anti-wear member near an end portion in the driving direction on the opposite side of the driving surface, the piezoelectric vibrator being joined to the magnet so as to be pressed by the bonding material to the driving surface made of magnetic material. The magnet is a square wave ultrasonic motor disposed to be spaced apart from the driving surface.;This ultrasonic motor achieves high driving efficiency while simplifying the pressurization mechanism and miniaturizing the motor.