Solenoid apparatus for use in hydraulic shock absorber
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United States of America Patent
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-
N/A
Issued Date -
Jun 7, 2001
app pub date -
Dec 7, 2000
filing date -
Dec 7, 1999
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
In a disclosed solenoid apparatus, one end of an actuating rod secured to the plunger of the solenoid apparatus abuts on a slider equipped with extension and compression pressure control valves. A coil is excited to induce thrust in the plunger, thereby moving the slider to control damping force. An end of the actuating rod projects from the plunger and extends through a rod guide to form a hydraulic fluid chamber at the rear of the plunger. Hydraulic fluid chambers inside the hydraulic shock absorber are communicated directly with the hydraulic fluid chamber at the rear of the plunger through hydraulic fluid passages in the actuating rod. Even when there is a sharp change in the pressure in the hydraulic fluid chambers inside the hydraulic shock absorber, the pressures acting on both ends of the plunger are kept equal to each other at all times.
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