| 摘要 |
PURPOSE:To allow the forcibly pressing force to be regulated in a simple constitution, by providing an inclined plane around a pressure-welding member to give pressure-welding force to a rotor and a diaphragm and by driving a screw fitted to a frame body to the inclined plane. CONSTITUTION:An annular ringed vibration absorber 12, a piezoelectric element 13 and a diaphragm 14 are integrally secured and arranged to an ultrasonic motor frame body 11. A rotor 15 is rotatably installed on the diaphragm 14. An inclined plane is provided, which is inclined slantwise against the direction of pressure welding around a pressure-welding member 19 to give pressure- welding force to the rotor 15 and the diaphragm 14, and a screw 20 fitted to the frame body 11 against the inclined plane is driven to press forcibly from the right angle to the pressure-welding direction. |
