LATCH TYPE PIEZOELECTRIC ACTUATOR

Title:

LATCH TYPE PIEZOELECTRIC ACTUATOR

Document Type and Number:

Japanese Patent JPS61187284

Kind Code:

A

Abstract:

PURPOSE:To simplify structure, to miniaturize a device and to lower power by curving and supporting a leaf spring with a flying member, transmitting the displacement of an electrostrictive or piezoelectric element arranged in parallel on the projecting surface side of the leaf spring by a displacing lever arm for the electrostrictive or piezoelectric element and giving the flying member force while opposing the projecting surface of the leaf spring. CONSTITUTION:When voltage is applied to a piezoelectric element 4 under the state in which a movable contact 2 is brought into contact with a contact 5a, the element 4 is displaced at high speed in spite of a minute distance in the direction of the arrow A, and a lever arm 5 is turned and operated centering around one end 3c. The contact 5a is transmitted while a displacement is magnified at that time, the movable contact 2 as a flying member is subject to force and accelerated and files, and a leaf spring 1 is inverted and operated and the movable contact 2 is brought to the state in which the contact 2 is brought into contact with a contact 7a. When voltage is applied to a piezoelectric element 6 from the state, the movable contact 2 is subject to force in the direction of the arrow B, is accelerated, is separated from the contact 7a and files to a contact 5a section, the lead spring 1 is inverted and worked again, and the lead spring is brought to the state in which it is brought into contact with the contact 5a. Accordingly, the movable contact 2 can be changed over to the contact 7a from the contact 5a and to the contact 5a from the contact 7a.

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Inventors:

UCHIKAWA TADAYASU
OOTA TAKASHI

Application Number:

JP2709985A

Publication Date:

August 20, 1986

Filing Date:

February 14, 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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