Title:
ELECTRET MOTOR
Document Type and Number:
Japanese Patent JPS61247283
Kind Code:
A
Abstract:
PURPOSE:To linearly move movable elements with a simple construction by opposing electret plates formed in strip shape through the prescribed gap into movable elements, and displacing the end displacing ranges of two bimorphs to dispose in the gap. CONSTITUTION:A movable element 1 is composed of two electret plates 2, 3 and a coupling piece 4, and the plates 2 are alternately polarized longitudinally in the strip shape. The plates 2, 3 are opposed to each other in the same polarity through the prescribed gap G1, and mounted on a guide rail linearly movably in the longitudinal direction. The movement continuing first and second bimorphs 5, 6 are integrated by superposing two piezoelectric elements 7, 8, the ends are disposed in the gap G1, and the other ends are secured to a base 11. Thus, the prescribed voltage is applied from a drive circuit 12 to the second bimorph 6 to displace it upward to move the element 1 in the prescribed direction at 90 deg. of an electric angle. Further, it is further moved similarly by the first bimorph 5 at 90 deg. of the electric angle. This is repeated to move the element 1 to the desired ground point.
Inventors:
TAKADA TAKASHI
Application Number:
JP8820585A
Publication Date:
November 04, 1986
Filing Date:
April 24, 1985
Export Citation:
Assignee:
MATSUSHITA ELECTRIC WORKS LTD
International Classes:
H02N11/00; H02N1/00; (IPC1-7): H02N1/00
Attorney, Agent or Firm:
Shigeji Sato (1 person outside)