JPH01140004U

JPH01140004U -

Info

Publication number: JPH01140004U
Application number: JP3615388U
Authority: JP
Priority date: 1988-03-18
Filing date: 1988-03-18
Publication date: 1989-09-25

Description

[Brief explanation of the drawing]

第１図は本考案の一実施例に係る油圧シリンダ
のシール装置の一部切欠き縦断正面図、第２図は
従来の油圧シリンダのシール装置の一部切欠き縦
断正面図である。〔符号の説明〕、１……シリンダ、２……ピス
トン、３……ピストンロツド、４……シールリン
グ、６′……第１のウエアーリング、７′……第
２のウエアーリング、８……ウエアーリング。 FIG. 1 is a partially cutaway vertical front view of a sealing device for a hydraulic cylinder according to an embodiment of the present invention, and FIG. 2 is a partially cutaway vertical front view of a conventional sealing device for a hydraulic cylinder. [Explanation of symbols] 1...Cylinder, 2...Piston, 3...Piston rod, 4...Seal ring, 6'...First wear ring, 7'...Second wear ring, 8... wear ring.

補正昭６３．８．２５実用新案登録請求の範囲を次のように補正する
。Amendment August 25, 1983 The scope of claims for utility model registration is amended as follows.

【実用新案登録請求の範囲】シリンダ内にピストンを介してピストンロツド
が移動自在に挿入され、ピストンの外周にはシー
ルリングが設けられていると共に、シールリング
とピストン両端との間にウエアーリングが配設さ
れている油圧シリンダのシール装置に於て、ウエ
アーリングは、硬質系材料で成形された第１のウ
エアーリングと当該第１のウエアーリングのピス
トン端部側外周に積層されている軟質系材料で成
形された第２のウエアーリングとから成形されて
いることを特徴とする油圧シリンダのシール装置
。[Claim for Utility Model Registration] A piston rod is movably inserted into the cylinder via a piston, and a seal ring is provided on the outer periphery of the piston, and wear rings are arranged between the seal ring and both ends of the piston. In the installed hydraulic cylinder sealing device, the wear ring includes a first wear ring molded from a hard material and a soft material laminated on the outer periphery of the first wear ring on the piston end side. A sealing device for a hydraulic cylinder, characterized in that the sealing device is formed from a second wear ring formed by molding.

Claims

[Scope of utility model registration request]

A seal for a hydraulic cylinder in which a piston rod is movably inserted into the cylinder via a piston, a seal ring is provided around the outer periphery of the piston, and wear rings are provided between the seal ring and both ends of the piston. In the device, the wear rings include a first wear ring molded from a fluorine-based material and a second wear ring molded from a phenolic material laminated on the outer periphery of the first wear ring on the piston end side. A sealing device for a hydraulic cylinder, characterized in that it is formed from a wear ring.