JPS5870504U

JPS5870504U - Seal rings for hydraulic cylinders, etc.

Info

Publication number: JPS5870504U
Application number: JP10268081U
Authority: JP
Inventors: 中村　静一; 原　定昭
Original assignee: カヤバ工業株式会社
Priority date: 1981-07-09
Filing date: 1981-07-09
Publication date: 1983-05-13

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of drawings]

第１図乃至第３図は従来の油圧シリンダの一実施例を示
すもので第１図は要部の断面図、第２図は圧力の進入路
を示す拡大断面図、第３図はエキスパンダリングの変形
状態を示す第１図と同様の要部の断面図、第４図は本考
案に基く油圧シリンダの一実施例を示す要部の断面図、
第５図は他の実施例を示す要部の断面図である。１〜シリンダチユーブ、２〜ピストン、３．８　　　−
〜ウェアリング、３′〜凹溝、４．７〜バツクアツプリ
ング、５〜スライドリングく６〜エキスパンダリング、
ａ、　　ｂ、　　ｃ、　　ｄ、　　ｆ〜間隙。Figures 1 to 3 show an example of a conventional hydraulic cylinder. Figure 1 is a sectional view of the main parts, Figure 2 is an enlarged sectional view showing the pressure entry path, and Figure 3 is an expander. FIG. 4 is a cross-sectional view of the main parts similar to FIG. 1 showing the deformed state of the ring; FIG. 4 is a cross-sectional view of the main parts showing an embodiment of the hydraulic cylinder based on the present invention;
FIG. 5 is a sectional view of main parts showing another embodiment. 1~Cylinder tube, 2~Piston, 3.8 -
~Wear ring, 3'~concave groove, 4.7~backup ring, 5~slide ring, 6~expander ring,
a, b, c, d, f ~ gap.

Claims

[Scope of utility model registration request]

A backup ring is provided by sandwiching a slide ring between a pair of wear rings, and the wear ring, backup ring, and slide ring are closely opposed to each other. A seal for a hydraulic cylinder or the like, characterized in that the seal contacts the lower surface of the cylinder and has a gap formed between each ring and the backup ring, and the backup ring is provided with a slit that communicates with the gap between the cylinder tube and the piston. ring.