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Patent Searching and Data


Title:
TRAVELING WAVE TYPE ULTRASONIC RELAY
Document Type and Number:
Japanese Patent JP11045649
Kind Code:
A
Abstract:

To enable a user to optionally set an operation form in response to the situation, and adjust even contact pressure by driving a movable contact point spring in the clockwise direction or the anticlockwise direction by a rotor to rotate in the clockwise direction or the anticlockwise direction when AC voltage is impressed on piezoelectric elements.

Piezoelectric elements 44 polarized so that polarity alternately reverses are stuck along an outer periphery to the reverse of a stator 41. A movable contact point spring 6 having a movable contact point 61 and fixed contact point springs 7 which are arranged on its both sides and have a fixed contact point 71 opposed to the movable contact point 61, are implanted in an upper face plate 53 of a package 5, and a movable cylinder 47 having a slit 46 to/into which the free end of the movable contact point spring 6 is fitted/ inserted, is fixed to an outer peripheral part of a rotor 42. When AC voltage is impressed on the piezoelectric elements 44, the rotor 42 rotates in the clockwise direction or the anticlockwise direction, and the movable contact point spring 6 is driven in the rotational direction of the rotor 42.


Inventors:
Nakamura, Kenzo
Application Number:
JP1997000201348
Publication Date:
February 16, 1999
Filing Date:
July 28, 1997
Export Citation:
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Assignee:
FUJITSU TAKAMIZAWA COMPONENT KK
International Classes:
H01H57/00; H01H57/00; (IPC1-7): H01H57/00