JPS63201233U

JPS63201233U -

Info

Publication number: JPS63201233U
Application number: JP9243087U
Authority: JP
Priority date: 1987-06-16
Filing date: 1987-06-16
Publication date: 1988-12-26

Description

[Brief explanation of drawings]

第１図は本考案の第１の実施例を示す油圧緩衝
器の要部半断面図、第２図は第２の実施例を示す
第１図と同様の半断面図、第３図および第４図は
従来技術を示し、第３図は油圧緩衝器の部分縦断
面図、第４図は第３図中の要部を拡大して示す半
断面図である。１……外筒、２……内筒、３……キヤツプ、３
Ｃ……折曲げ部、４……ロツドガイド、５……ピ
ストンロツド、１０……〓間、２１，３１……オ
イルシール、２１Ａ，３１Ａ……内周部、２１Ｂ
，３１Ｂ……肩部、２１Ｃ，３１Ｃ……外周部、
２１Ｄ，３１Ｄ……リツプ部、２２，３２……補
強環、Ａ……環状油室、Ｃ……室。 Fig. 1 is a half-sectional view of essential parts of a hydraulic shock absorber showing a first embodiment of the present invention, Fig. 2 is a half-sectional view similar to Fig. 1 showing a second embodiment, and Figs. 4 shows the prior art, FIG. 3 is a partial vertical sectional view of a hydraulic shock absorber, and FIG. 4 is a half sectional view showing an enlarged main part in FIG. 3. 1... Outer cylinder, 2... Inner cylinder, 3... Cap, 3
C...Bent part, 4...Rod guide, 5...Piston rod, 10...Between, 21, 31...Oil seal, 21A, 31A...Inner peripheral part, 21B
, 31B...Shoulder part, 21C, 31C...Outer circumference part,
21D, 31D... lip portion, 22, 32... reinforcing ring, A... annular oil chamber, C... chamber.

Claims

[Scope of utility model registration request]

a cylinder; provided on one end side of the cylinder;
A cap having a radially inward bent portion at its tip; a rod guide located on the proximal end side of the cap and provided within the cap; It has a piston rod that protrudes outside the cylinder, an inner circumferential portion that is located between the bent portion of the cap and the rod guide, is disposed within the cap, and slides into contact with the piston rod with an interference, and has a shoulder. an oil seal having an outer circumferential portion formed integrally with the inner circumferential portion via a portion and interposed between the outer circumferential portion and the inner circumferential surface of the cap; and the outer circumferential portion of the oil seal being deformed. In a hydraulic shock absorber comprising a reinforcing ring embedded in the oil seal, a sealing property is provided between the lower end of the outer circumference of the oil seal and the inner circumferential surface of the cap.
A hydraulic shock absorber characterized by forming a lip portion that faces outward in the radial direction and slopes downward.