JPS57137733A - Hydrauic shock absorber - Google Patents

Hydrauic shock absorber

Info

Publication number
JPS57137733A
JPS57137733A JP2087681A JP2087681A JPS57137733A JP S57137733 A JPS57137733 A JP S57137733A JP 2087681 A JP2087681 A JP 2087681A JP 2087681 A JP2087681 A JP 2087681A JP S57137733 A JPS57137733 A JP S57137733A
Authority
JP
Japan
Prior art keywords
oil
chamber
hydraulic
negative
check valve
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
JP2087681A
Other languages
Japanese (ja)
Inventor
Masahiro Arai
Yoshio Negishi
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.)
Showa Corp
Original Assignee
Showa Seisakusho 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 Showa Seisakusho Co Ltd filed Critical Showa Seisakusho Co Ltd
Priority to JP2087681A priority Critical patent/JPS57137733A/en
Publication of JPS57137733A publication Critical patent/JPS57137733A/en
Pending legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
    • F16F9/32—Details
    • F16F9/50—Special means providing automatic damping adjustment, i.e. self-adjustment of damping by particular sliding movements of a valve element, other than flexions or displacement of valve discs; Special means providing self-adjustment of spring characteristics
    • F16F9/512—Means responsive to load action, i.e. static load on the damper or dynamic fluid pressure changes in the damper, e.g. due to changes in velocity

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • Fluid-Damping Devices (AREA)

Abstract

PURPOSE:To enable to display a constantly appropriate damping force by a method wherein a check valve is provided at an upper part of a sheet pipe, and a defficiency of a hydraulic oil in an upper hydraulic chamber is compensated for by supplying the oil from an oil reserving chamber to eliminate a negative- pressure. CONSTITUTION:A check valve casing 33 is provided at the upper end of the sheet pipe 13 in an outer tube 11, and the check valve 34 having a pressing spring 36 inside the casing 33. Hydraulic chambers C, A are communicated to each other by an oil hole 32, an oil passage 37 and an oil hole 31 through the valve 34. When a piston 18 moves at high speed and the amount of the oil flowing into the chamber A is insufficient so that a negative-pressure tends to develop in the chamber A, the valve 34 is opened against the pressing spring 36, and the oil in the chamber C flows into the chamber A through the oil hole 32, the oil passages 35, 37 and the oil hole 31 to compensate for the defficiency of the oil. Accordingly, generation of a negative-pressure in the hydraulic chamber A can be prevented and the reduction in the damping force can be prevented.
JP2087681A 1981-02-17 1981-02-17 Hydrauic shock absorber Pending JPS57137733A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2087681A JPS57137733A (en) 1981-02-17 1981-02-17 Hydrauic shock absorber

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2087681A JPS57137733A (en) 1981-02-17 1981-02-17 Hydrauic shock absorber

Publications (1)

Publication Number Publication Date
JPS57137733A true JPS57137733A (en) 1982-08-25

Family

ID=12039380

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2087681A Pending JPS57137733A (en) 1981-02-17 1981-02-17 Hydrauic shock absorber

Country Status (1)

Country Link
JP (1) JPS57137733A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4642198A (en) * 1984-05-01 1987-02-10 Lever Brothers Company Liquid bleaching compositions
US7216747B2 (en) * 2004-10-14 2007-05-15 Tenneco Automotive Operating Company Inc. Amplitude controlled orifice valving

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5241780A (en) * 1975-09-29 1977-03-31 Hitachi Ltd Anti-current-failure circuit of program cotrol system
JPS5247180A (en) * 1975-10-09 1977-04-14 Sirven Jacques Marie Michel Buffer

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5241780A (en) * 1975-09-29 1977-03-31 Hitachi Ltd Anti-current-failure circuit of program cotrol system
JPS5247180A (en) * 1975-10-09 1977-04-14 Sirven Jacques Marie Michel Buffer

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4642198A (en) * 1984-05-01 1987-02-10 Lever Brothers Company Liquid bleaching compositions
US7216747B2 (en) * 2004-10-14 2007-05-15 Tenneco Automotive Operating Company Inc. Amplitude controlled orifice valving
DE112005002549B4 (en) * 2004-10-14 2015-03-26 Tenneco Automotive Operating Company Inc. Amplitude-controlled opening valve equipment

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