JPS55159364A - Rod packing device in hydraulic cylinder - Google Patents

Rod packing device in hydraulic cylinder

Info

Publication number
JPS55159364A
JPS55159364A JP6428879A JP6428879A JPS55159364A JP S55159364 A JPS55159364 A JP S55159364A JP 6428879 A JP6428879 A JP 6428879A JP 6428879 A JP6428879 A JP 6428879A JP S55159364 A JPS55159364 A JP S55159364A
Authority
JP
Japan
Prior art keywords
bearing
pressure
hydraulic chamber
decreased
hydraulic
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP6428879A
Other languages
Japanese (ja)
Inventor
Masakatsu Yamaguchi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
KYB Corp
Original Assignee
Kayaba Industry Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Kayaba Industry Co Ltd filed Critical Kayaba Industry Co Ltd
Priority to JP6428879A priority Critical patent/JPS55159364A/en
Publication of JPS55159364A publication Critical patent/JPS55159364A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To extend a life of U-ring by a method wherein an inner circumferential surface of the bearing is provided with between a main seal and a sub-seal an accumulator and a drain hole communicating with a hydraulic chamber through a check valve.
CONSTITUTION: When a high pressure is acted upon the hydraulic chamber 17, a part of the hydraulic pressure oil is apt to leak out via a sliding clearance between the piston rod and the bearing. A transmission of the hydraulic oil is intercepted by the first step buffer bearing 20a, decreased at its pressure by the second buffer ring 20b, resulting in that a high pressure may not be applied to the main seal 14. The surge pressure in the hydraulic chamber 17 is sucked and slackened by the shrinking and deformation of accumulator 21 and decreased step by step, then a pressure load upon the U-ring 13 is decreased to elongate a life of the device. The oil leaked between the bearing and the piston rod is circulated back into the hydraulic chamber via check valve 24 through drain hole 25.
COPYRIGHT: (C)1980,JPO&Japio
JP6428879A 1979-05-24 1979-05-24 Rod packing device in hydraulic cylinder Pending JPS55159364A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6428879A JPS55159364A (en) 1979-05-24 1979-05-24 Rod packing device in hydraulic cylinder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6428879A JPS55159364A (en) 1979-05-24 1979-05-24 Rod packing device in hydraulic cylinder

Publications (1)

Publication Number Publication Date
JPS55159364A true JPS55159364A (en) 1980-12-11

Family

ID=13253890

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6428879A Pending JPS55159364A (en) 1979-05-24 1979-05-24 Rod packing device in hydraulic cylinder

Country Status (1)

Country Link
JP (1) JPS55159364A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19523217A1 (en) * 1995-06-27 1997-01-02 Schaeffler Waelzlager Kg Seals in a master cylinder

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19523217A1 (en) * 1995-06-27 1997-01-02 Schaeffler Waelzlager Kg Seals in a master cylinder

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