| 摘要 |
PURPOSE: A windmill type ultrasonic motor using a bolt fastening method is provided to stabilize a combination structure of the ultrasonic motor by using a bolt and a nut. CONSTITUTION: A windmill type ultrasonic motor using a bolt fastening method includes a ring-shaped piezoelectric ceramic(1), a metallic elastic body(2), a bolt(3), a nut(4), a rotor(5), a bearing(6), and a cylindrical cover(7). The metallic elastic body(2) having four arms is loaded on an upper surface of the ring-shaped piezoelectric ceramic(1). The metallic elastic body(2) is coupled to the ring-shaped piezoelectric ceramic(1) by using the bolt(3) and the nut(4). The rotor(5) is loaded on a center of each arm of the metallic elastic body(2). The bearing(6) is inserted into the rotor(5). The cylindrical cover(7) is covered thereon. The windmill type ultrasonic motor has a cone-shaped contact portion which is connected to a stator.
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