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Title:
LATCH-TYPE PIEZOELECTRIC ACTUATOR
Document Type and Number:
Japanese Patent JPS61176176
Kind Code:
A
Abstract:
PURPOSE:To obtain an actuator of simple structure, small size, low power, low heat generation, and without magnetic interference by using a piezoelectric element as a driving source of a flying member. CONSTITUTION:A movable contact 2 is arranged near the center of a leaf spring 1 as a flying member and both ends of the leaf spring 1 are inserted into grooves 3a and 3b of an attachment member 3 so as to bend the leaf spring 1. When a voltage is applied to the first piezoelectric clement 4 under the condition that the movable contact 2 is in contact with the first fixed contact 5, the element 4 is displaced in direction A minutely, but at high speed. Then the movable contact 2 is accelerated by the force of a component in a concave direction of the bend of the leaf spring 1 through an inclined plane of the fixed contact 5 and files away from the contact 5. The leaf spring 1 is reversed to be in contact with the second fixed contact 7. When a voltage is applied to the second piezoelectric element 6, the movable contact 2 is separated from the contact 7 and the leaf spring 1 is reversed again to be in contact with the fixed contact 5. Thus the movable contact 2 can be switched.

Inventors:
UCHIKAWA TADAYASU
OOTA TAKASHI
Application Number:
JP1737385A
Publication Date:
August 07, 1986
Filing Date:
January 31, 1985
Export Citation:
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Assignee:
NEC CORP
International Classes:
H01L41/09; H01H57/00; H02N2/00; (IPC1-7): H01L41/08; H02N2/00
Attorney, Agent or Firm:
Uchihara Shin



 
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