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Title:
ACTUATOR WITH HYDRAULIC DISPLACEMENT EXPANDING MECHANISM
Document Type and Number:
Japanese Patent JPH0374602
Kind Code:
A
Abstract:

PURPOSE: To eliminate the deformation of a diaphragm and transfer the displacement of a driving piston to an output piston by providing the plate-shaped circular diaphragm liquid-tightly fitted to a body on the outer periphery and liquid-tightly fitted to the piston on the inner periphery.

CONSTITUTION: The outer periphery of a diaphragm 12 is liquid-tightly fitted between an upper body 1a and a lower body 1b. The upper body 1a and the lower body 1b are screwed together while the diaphragm 12 is inserted between them. The diaphragm 12 is connected while being deformed by the projection 13 of the upper body 1a and the recess 14 of the lower body 1b. The inner periphery of the diaphragm 12 is fixed to the upper end section of a first piston 2. The deformation of the diaphragm 12 is eliminated, and the deformation of a driving piston can be surely transferred to an output piston.


Inventors:
Tsutsui, Osamu
Sawai, Mikio
Horiuchi, Hiroshi
Arita, Kinya
Application Number:
JP1989000211000
Publication Date:
March 29, 1991
Filing Date:
August 16, 1989
Export Citation:
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Assignee:
TOTO LTD
International Classes:
F15B7/00; (IPC1-7): F15B7/00



 
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