JPS55142138A - Oil hydraulic buffer - Google Patents

Oil hydraulic buffer

Info

Publication number
JPS55142138A
JPS55142138A JP4900479A JP4900479A JPS55142138A JP S55142138 A JPS55142138 A JP S55142138A JP 4900479 A JP4900479 A JP 4900479A JP 4900479 A JP4900479 A JP 4900479A JP S55142138 A JPS55142138 A JP S55142138A
Authority
JP
Japan
Prior art keywords
valve
spring
oil
close contact
hydraulic buffer
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.)
Granted
Application number
JP4900479A
Other languages
Japanese (ja)
Other versions
JPS5926818B2 (en
Inventor
Teiji Suka
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 JP4900479A priority Critical patent/JPS5926818B2/en
Publication of JPS55142138A publication Critical patent/JPS55142138A/en
Publication of JPS5926818B2 publication Critical patent/JPS5926818B2/en
Expired 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
    • F16F9/34—Special valve constructions; Shape or construction of throttling passages
    • F16F9/348—Throttling passages in the form of annular discs or other plate-like elements which may or may not have a spring action, operating in opposite directions or singly, e.g. annular discs positioned on top of the valve or piston body
    • F16F9/3485—Throttling passages in the form of annular discs or other plate-like elements which may or may not have a spring action, operating in opposite directions or singly, e.g. annular discs positioned on top of the valve or piston body characterised by features of supporting elements intended to guide or limit the movement of the annular discs

Landscapes

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

Abstract

PURPOSE:To prevent generation of abnormal sound in an oil hydraulic buffer for the suspension of a vehicle such as an motorbicycle by providing a disc valve which is opened and closed in accordance with the direction of movement of a piston with oil holes and providing the valve with a close contact prevention serration. CONSTITUTION:A valve sheat 13 is provided with a number of radially spaced peripheral notches 21. When the compression stroke of this oil hydraulic buffer is changed to the extension stroke, a negative pressure is produced within the inner cylinder 2, so that a check valve 16 and a disc valve 14 are upwardly displaced in the Figure against the spring force of a spring 20 to open an oil port 8. At this time, if the valve 14 and seat 13 are brought into contact over a wide area, even very fine gaps between the two surfaces in close contact are filled with oil, so that they will not be readily separated. Since the area of close contact is reduced by the provision of the serration, the attracting force is reduced, and thus with an increase of the negative pressure within the inner cylinder 2 beyond the spring force of the spring 20 the valve 14 is immediately separated from the seat 13 and raised at a slow speed by compressing the spring 20. Thus, it is prevented from striking a stepped portion 23 with a great momentum. In this way, abnormal sound can be prevented.
JP4900479A 1979-04-23 1979-04-23 hydraulic shock absorber Expired JPS5926818B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4900479A JPS5926818B2 (en) 1979-04-23 1979-04-23 hydraulic shock absorber

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4900479A JPS5926818B2 (en) 1979-04-23 1979-04-23 hydraulic shock absorber

Publications (2)

Publication Number Publication Date
JPS55142138A true JPS55142138A (en) 1980-11-06
JPS5926818B2 JPS5926818B2 (en) 1984-06-30

Family

ID=12819022

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4900479A Expired JPS5926818B2 (en) 1979-04-23 1979-04-23 hydraulic shock absorber

Country Status (1)

Country Link
JP (1) JPS5926818B2 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2499190A1 (en) * 1981-01-30 1982-08-06 Bilstein August Gmbh Co Kg BITUBULAR HYDROPNEUMATIC SHOCK ABSORBER, IN PARTICULAR FOR DAMPING OSCILLATIONS AFFECTING THE FRONT AXLE OF MOTOR VEHICLES
JPS6099341U (en) * 1983-12-14 1985-07-06 株式会社　昭和製作所 Hydraulic shock absorber valve structure
JPS62179443U (en) * 1986-05-02 1987-11-14
JPS62202547U (en) * 1986-06-16 1987-12-24
FR2767373A1 (en) * 1997-08-14 1999-02-19 Mannesmann Sachs Ag PISTON FOR A PISTON-CYLINDER UNIT, IN PARTICULAR A SHOCK ABSORBER

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2499190A1 (en) * 1981-01-30 1982-08-06 Bilstein August Gmbh Co Kg BITUBULAR HYDROPNEUMATIC SHOCK ABSORBER, IN PARTICULAR FOR DAMPING OSCILLATIONS AFFECTING THE FRONT AXLE OF MOTOR VEHICLES
JPS6099341U (en) * 1983-12-14 1985-07-06 株式会社　昭和製作所 Hydraulic shock absorber valve structure
JPS62179443U (en) * 1986-05-02 1987-11-14
JPH0433477Y2 (en) * 1986-05-02 1992-08-11
JPS62202547U (en) * 1986-06-16 1987-12-24
JPH0425545Y2 (en) * 1986-06-16 1992-06-18
FR2767373A1 (en) * 1997-08-14 1999-02-19 Mannesmann Sachs Ag PISTON FOR A PISTON-CYLINDER UNIT, IN PARTICULAR A SHOCK ABSORBER

Also Published As

Publication number Publication date
JPS5926818B2 (en) 1984-06-30

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