| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an oscillatory wave driving unit, which can elongate the durability life by reducing the friction and abrasion at a contact part between an oscillator and a contact body, and an electric apparatus. <P>SOLUTION: The oscillatory wave motor is equipped with an oscillator 1 which has a metallic part 2 and a piezoelectric element 3 and where drive oscillation is excited, a disc-shaped contact body 4 which has an output shaft 4a in an eccentric position on a disc, and a plate spring 5 which pressurizes the oscillator 1 and the contact body 4 into contact. The oscillator 1 shifts in the direction of pressurization, according to the change of the distance between the center of the output shaft 4a of the contact body 4 and a position where the oscillator 1 and the contact body 4 are in contact, and the amount of shrinkage of the plate spring 5 changes, and the pressure of the contact face between the oscillator 1 and the contact body 4 changes. Hereby, the driving force that the contact body 4 receives from the oscillator 1 changes, and the output torque generated in the output shaft 4a of the contact body 4 changes, too. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
