JPS57171135A - Oil hydraulic shock absorber - Google Patents

Oil hydraulic shock absorber

Info

Publication number
JPS57171135A
JPS57171135A JP5595981A JP5595981A JPS57171135A JP S57171135 A JPS57171135 A JP S57171135A JP 5595981 A JP5595981 A JP 5595981A JP 5595981 A JP5595981 A JP 5595981A JP S57171135 A JPS57171135 A JP S57171135A
Authority
JP
Japan
Prior art keywords
piston rod
piston
oil
communicated
oil passage
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
JP5595981A
Other languages
Japanese (ja)
Inventor
Tomeo Fuse
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 JP5595981A priority Critical patent/JPS57171135A/en
Publication of JPS57171135A publication Critical patent/JPS57171135A/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 decrease damping power of a shock absorber when its piston increases its speed to not less than a certain level, by opening an open-close valve when the piston increases its speed to at least the certain level in its compression stroke, equipping the open-close valve in a flow passage and providing the flow passage in the inside of a piston rod. CONSTITUTION:A spring receiver 7 is screwed to the end of a piston rod 1, and plural oil holes 10 are radially drilled to said receiver 7 while an oil passage 11, communicated to the oil holes 10 of the spring receiver 7, is provided axially in the piston rod 1, and said oil passage 11 is communicated to the upper oil chamber A of a piston by a radially communicated oil passage 11a. Further a stepped part 12 is provided in a lower end of the oil passage 11 axially of the piston rod 1, and a cylindrical open-close valve 13 is axially and slidably equipped between said stepped part 12 and a closing part of said spring receiver 7, and always pressed by a coil spring 14 to the lower closing part.
JP5595981A 1981-04-14 1981-04-14 Oil hydraulic shock absorber Pending JPS57171135A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5595981A JPS57171135A (en) 1981-04-14 1981-04-14 Oil hydraulic shock absorber

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5595981A JPS57171135A (en) 1981-04-14 1981-04-14 Oil hydraulic shock absorber

Publications (1)

Publication Number Publication Date
JPS57171135A true JPS57171135A (en) 1982-10-21

Family

ID=13013610

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5595981A Pending JPS57171135A (en) 1981-04-14 1981-04-14 Oil hydraulic shock absorber

Country Status (1)

Country Link
JP (1) JPS57171135A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5007327A (en) * 1988-09-09 1991-04-16 Teijin Seiki Company Limited Servo actuator

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5007327A (en) * 1988-09-09 1991-04-16 Teijin Seiki Company Limited Servo actuator

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