Title:
EXPANSION DEVICE UTILIZING HYDRAULIC PRESSURE
Document Type and Number:
Japanese Patent JPS62292514
Kind Code:
A
Abstract:
PURPOSE:To make a stable multistage position setup performable, by having an inner cylinder, housing a piston member inside, built in a cylinder, and making a piston and the inner cylinder retractable each within the regulating range, in case of the above-captioned device for vehicle suspension. CONSTITUTION:Since an outer diameter of an inner cylinder IC is larger than that of a piston PI, if hydraulic pressure is impressed from an orifice 11, first the inner cylinder is pressed down, then the piston PI is depressed by hydraulic pressure to be impressed from an orifice 21. At this time, a flange 24 of the inner cylinder IC comes into contact with a stopper 14 of a cylinder CY, therefore its movement is regulated, coming to a stop. And, at the next stage, depression of the piston PI is started, whereby it moves till a flange 32 is made contact with a stopper 26 of the inner cylinder IC. With this constitution, positions of more than three stages are stably securable.
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Inventors:
YAMADA NAOKI
Application Number:
JP13694086A
Publication Date:
December 19, 1987
Filing Date:
June 12, 1986
Export Citation:
Assignee:
AISIN SEIKI
International Classes:
F15B15/16; B60G17/00; B60G17/015; B60G17/027; B60G17/04; F15B15/24; F16F9/50; (IPC1-7): B60G17/00; F15B15/24; F16F9/50
Attorney, Agent or Firm:
Nobuoki Sugi