Sealing structure of an accumulator

Details Sealing structure of an accumulator Sealing structure of an accumulator

1989-07-27

1991-02-26

Reger, Duane A.

Brakes

Internal-resistance motion retarder

Including seal or guide

18832221, 277 58, F16F 936

Patent

active

049954857

ABSTRACT:
An accumulator comprises a housing and a rod. The housing is sealed by means of high- and low-pressure sealing devices. The high-pressure sealing device includes an annular groove formed on the inner surface of the housing, a seal ring with an L-shaped section housed in the annular groove, and an elastomeric O-ring disposed on the outer periphery side of the seal ring. The seal ring is composed of a thin wall portion, situated on the high-pressure side, and a thick wall portion situated on the low-pressure-side. The inner peripheral surface of the thick wall portion is in contact with the outer peripheral surface of the rod. A gap, which is wide enough to receive the hydraulic fluid, is defined between the inner peripheral surface of the thin wall portion and the outer peripheral surface of the rod. A drain recovery hole is connected between the high- and low-pressure sealing devices.

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