| 摘要 |
PURPOSE:To effectively transmit ultrafine lateral traveling wave of the surface of an elastic unit by disposing the elastic unit, and a rotary plate rotatably held in parallel with an axial angle. CONSTITUTION:When a high frequency signal is input through a printed circuit board 11 to vibrate an electrostrictive element 13 secured through a cushion material 12 to the board 11, a lateral traveling wave of circumferential direction is generated on the surface of an elastic unit 14 fixed to the element 13 to rotate a rotary plate 15 contacted under pressure with the unit 14 in a circumferential direction. In this case, the element 13 and the unit 14 are positioned by the board 11 secured to a housing 10, the unit 14 and the plate 15 rotatably held with the housing 10 are disposed in parallel with an axial angle, thereby effectively transmitting ultrafine lateral traveling wave of the surface of the elastic unit to the rotary plate 15. |
