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US 2012/0267983 A1Published application
Stator and ultrasonic motor using the same
AssigneeNational Kaohsiung University of Applied Sciences
InventorsShine-Tzong Ho, Fu-Jie Hu
Life of this patent
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Abstract
An ultrasonic motor includes a stator. The stator includes a seat and a driving unit. The driving unit includes a generally semi-elliptical driving mechanism formed integrally with the seat, and two spaced-apart piezoelectric actuators disposed between the seat and the driving mechanism. Each of the piezoelectric actuators has a first end abutting against the driving mechanism, and a second end opposite to the first end and abutting against the seat.
Claims10
A stator adapted to be used in an ultrasonic motor, said stator comprising:
- a seat;
- and
- a driving unit including a generally semi-elliptical driving mechanism formed integrally with said seat, and two spaced-apart piezoelectric actuators disposed between said seat and said driving mechanism, each of said piezoelectric actuators having a first end abutting against said driving mechanism, and a second end opposite to said first end and abutting against said seat.
An ultrasonic motor comprising:
- a base;
- a movable member disposed movably on said base;
- at least one stator including a seat disposed removably on said base, and a driving unit including a generally semi-elliptical driving mechanism formed integrally with said seat, and two spaced-apart piezoelectric actuators disposed between said seat and said driving mechanism, each of said piezoelectric actuators having a first end abutting against said driving mechanism, and a second end opposite to said first end and abutting against said seat;
- and
- a pushing unit for biasing said driving mechanism to press against said movable member;
- wherein, when a driving voltage is applied to either of said piezoelectric actuators to deform said driving mechanism, said movable member is driven by said driving mechanism to move relative to said seat.
3 more elements
Dependencies are inferred from the claim text.