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Patent Searching and Data


Title:
ACTUATOR PROVIDED WITH LIQUID PRESSURE DISPLACEMENT ENLARGING MECHANISM
Document Type and Number:
Japanese Patent JPH04125302
Kind Code:
A
Abstract:

PURPOSE: To simplity a process and improve accuracy of an actuator by arranging an O ring under initial compression-load applied between the end face of a driving piston and the inside end face of the body so as to tightly seal a space between the driving piston and the body.

CONSTITUTION: An O ring 20 of sectional dimension determined to receive compression load initially is interposed between the upper face of a driving piston 2 and the inside the end face of a body 1. Processes such as machining an O ring groove and soldering of a diaphragm and the like are unnecessary without disturbing free deformation of a piezoelectric actuator 3, and manufacturing cost is decreased accuracy of the actuator 3 is improved.


Inventors:
TSUTSUI OSAMU
SAWAI MIKIO
ARITA KINYA
TSUKADA RYOICHI
HIROKAWA HIDEO
MATSUNO TAKANORI
KUWABARA HIDEHIKO
Application Number:
JP1990000244683
Publication Date:
April 24, 1992
Filing Date:
September 14, 1990
Export Citation:
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Assignee:
TOTO LTD
International Classes:
F15B7/00; F16J15/18; H01L41/09; (IPC1-7): F15B7/00; F16J15/18; H01L41/09