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US 5,332,941 AGranted
Ultrasonic driving motor
AssigneeHonda Electronics Co., Ltd.
InventorKeisuke Honda
Life of this patent
Estimating the term…
Abstract
The present invention is directed to an ultrasonic driving member comprising a rotor having slide projections in contact with an edge face of a piezoelectric vibrator.
Claims17
An ultrasonic driving motor comprising:
- a stator comprising a piezoelectric vibrator having a circular portion with an edge face and said plurality of electrodes arranged at on each side, the piezoelectric vibrator being fixedly arranged in a case;
- and a rotor comprising a resilient split ring frame arranged in contact with the circular portion of the stator, through a plurality of sliding projections held in contact with the edge face of the piezoelectric vibrator by the resilience of the split ring frame.
An ultrasonic driving motor comprising:
- a stator comprising a piezoelectric vibrator having sides and a circular portion with an outer edge face and a plurality of electrodes on each side of the vibrator, the piezoelectric vibrator being fixed in a case;
- a rotor comprising a resilient split ring frame having an inner and an outer periphery, arranged in contact with the outer edge face of the stator through a plurality of slide projections arranged on the inner periphery in contact with the edge face of the piezoelectric vibrator;
- and a resilient ring member arranged for applying pressure on the outer periphery of the ring frame.
An ultrasonic driving motor comprising:
- a stator comprising a piezoelectric vibrator having sides and a circular portion with an edge face and a plurality of electrodes on each side, the piezoelectric vibrator being fixedly arranged in a case;
- and
- a rotor comprising a ring frame having a plurality of sliding projections, the sliding projections comprising a plurality of leaf springs having first ends fixedly arranged on the ring frame and second ends fixedly attached to sliding members in contact with the edge face of the piezoelectric vibrator the sliding members being held in contact with the edge face of the stator by the resilience of the leaf springs.
Dependencies are inferred from the claim text.