JPS5882509U

JPS5882509U - Cushion seal device

Info

Publication number: JPS5882509U
Application number: JP17891481U
Authority: JP
Inventors: 前田　紀二; 牧村　兵衛
Original assignee: 三菱電線工業株式会社
Priority date: 1981-11-30
Filing date: 1981-11-30
Publication date: 1983-06-04

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゛は従来のクッション装置を示す縦断面部分図、
第２図は別の従来例を示す縦断面部分図、゛第３図は本
考案によるクッションシール装置を示す縦断面部分図、
第４図は第３図の拡大部分図、第５図は本考案における
金属リテーナの正面図、第６図は本考案におけるゴムリ
ングの正面図、第７図、第８図は作動説明図、第９図は
本考案による別の実施例を示す第４図に対応する縦断面
部分図、第１０図は第９図の実施例′における金属リテ
ーナの正面図、第１１図は更に別の実施例における金属
リテーナの正面図、第１−２図、第１３図は更に別の実
施例による縦断面部分図、第１４図は第１３図中のゴム
リングの正面図である。１・・・シリンダ、２・・・ピ
ストン、２ａ、　　２ｂ・・・クッションカラー、３・
・・内周壁部、３ａ・・・内壁面、８・・・シリンダ室
、ｌｌａ・・・側壁部、１２・・・円環状溝、１３゜１
９・・・貫通孔、１４．１４・・・ゴムリング、１４ａ
・・・内周部、１４ｂ・・・外周部、１５．１５’・・
・流体連通路、２０・・・ヘッドカバー、Ｘ□・・・シ
リンダ中心線、Ｘ３・・・面。Fig. 1 is a vertical cross-sectional partial view showing a conventional cushion device;
FIG. 2 is a partial vertical cross-sectional view showing another conventional example; FIG. 3 is a partial vertical cross-sectional view showing a cushion seal device according to the present invention;
FIG. 4 is an enlarged partial view of FIG. 3, FIG. 5 is a front view of the metal retainer in the present invention, FIG. 6 is a front view of the rubber ring in the present invention, FIGS. 7 and 8 are operation explanatory diagrams, FIG. 9 is a vertical cross-sectional partial view corresponding to FIG. 4 showing another embodiment according to the present invention, FIG. 10 is a front view of the metal retainer in the embodiment ' of FIG. 9, and FIG. 11 is a still another embodiment. 1-2 and 13 are vertical cross-sectional partial views according to still another embodiment, and FIG. 14 is a front view of the rubber ring in FIG. 13. 1... Cylinder, 2... Piston, 2a, 2b... Cushion collar, 3...
...Inner peripheral wall part, 3a...Inner wall surface, 8...Cylinder chamber, lla...Side wall part, 12...Annular groove, 13°1
9... Through hole, 14.14... Rubber ring, 14a
...Inner circumference, 14b...Outer circumference, 15.15'...
・Fluid communication path, 20...Head cover, X□...Cylinder center line, X3...Face.

Claims

[Scope of utility model registration request]

The inner periphery of a rubber ring is fitted into an annular groove with a substantially U-shaped cross section that opens toward the center of the cylinder and is provided on the cylinder chamber side end of the inner periphery wall of the cylinder end cover or rod cover. In a cushion seal device for a fluid pressure cylinder that reduces the movement speed of a piston by slidingly contacting a cushion collar concentric with and adjacent to the piston, the side wall on the side of the inner chamber near the bottom of the annular groove A through hole communicating with the cylinder chamber is provided in the annular groove, and a rubber ring is fitted into the annular groove so as to be slidable in the direction along the cylinder center line. What is claimed is: 1. A cushion seal device characterized in that the cushion seal device is symmetrical in plane with respect to the cushion seal device, and a fluid communication path communicating with a through hole is provided on the outer periphery of the cushion seal device.