US 2012/0074813 A1 · ULTRASONIC MOTOR DEVICE

Abstract

Provided is an ultrasonic motor device which is easy to downsize and superior in assembling workability. The ultrasonic motor device includes a first ultrasonic motor unit and a second ultrasonic motor unit each of which includes: a vibrator which periodically vibrates; a case which accommodates the vibrator; a moving member which is in contact with the vibrator; and a biasing member which applies a pressing force to the moving member and the vibrator to bring the moving member and the vibrator into pressing contact with each other; a base member to which the case of the first ultrasonic motor unit is fixed; a first frame which is fixed to the moving member of the first ultrasonic motor unit and to which the case of the second ultrasonic motor unit is fixed; and a second frame which is fixed to the moving member of the second ultrasonic motor unit.

Claims5

Dependent claims

An ultrasonic motor device comprising:

a first ultrasonic motor unit and a second ultrasonic motor unit each of which includes:
a vibrator which periodically vibrates by an application of a high frequent voltage to the vibrator;
a case which accommodates the vibrator;
a moving member which is in contact with the vibrator;
and a biasing member which applies a pressing force to the moving member and the vibrator to bring the moving member and the vibrator into pressing contact with each other, thereby producing a pressing force;
a base member to which the case of the first ultrasonic motor unit is fixed;
a first frame which is fixed to the moving member of the first ultrasonic motor unit and to which the case of the second ultrasonic motor unit is fixed;
and
a second frame which is fixed to the moving member of the second ultrasonic motor unit.

6 more elements

Dependencies are inferred from the claim text.

Ultrasonic motor device

Life of this patent

Ultrasonic motor device

Life of this patent

Abstract

Claims5