| 摘要 |
PURPOSE:To increase output and improve efficiency, by rounding or beveling the corners of projecting bodies provided on an oscillating body. CONSTITUTION:An ultrasonic motor is constituted of an oscillating body 22, consisting of an annular elastic body 20 and an annular piezoelectric body 21 which are bonded with each other, and a moving body, consisting of the friction member of an abrasion resistant material and an elastic body which are bonded with each other and arranged so as to contact the oscillating body. In this case, the oscillating body 22 is provided with projecting bodies 23 and all of the corners of the projecting bodies 23, which contact the moving body, are rounded. According to this method, the component of bending oscillation of the oscillating body 22 in the traveling direction of the oscillation may be transferred efficiently while the mechanical damage of the friction member, which is caused by the corners of the projecting bodies 23, may be eliminated. |
