MULTI-SPOKE-TYPE ULTRASONIC MOTOR
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United States of America
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Jan 2, 2020
app pub date -
Sep 27, 2017
filing date -
Sep 27, 2017
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Abstract
A multi-spoke-type ultrasonic motor has: a rotating shaft (1), a fastening sleeve cylinder (2), a spring (3), a rotor (4), a stator (5), a fastening screw (6), and piezoelectric ceramics (7). The rotor (4), the stator (5), the spring (3), and the fastening sleeve cylinder (2) are sequentially connected via the rotating shaft (1). The stator (5) is an annular metal plate having internal spoke-like teeth. The upper surface and the lower surface of the stator (5) are provided with identical stator spoke-like teeth for contacting the rotor (4). The rotor (4) and the stator (5) are in close contact under the effect of prestressing of the spring (3). The piezoelectric ceramics (7) are annular plates; upper and lower plates respectively, are affixed on the upper and lower surfaces of the stator (5). The motor is capable of increasing the output power of the ultrasonic motor.
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