FR2355210A1 - Telescopic hydraulic shock absorber - has secondary valve to reduce resistance at high piston speed - Google Patents

Telescopic hydraulic shock absorber - has secondary valve to reduce resistance at high piston speed

Info

Publication number
FR2355210A1
FR2355210A1 FR7618118A FR7618118A FR2355210A1 FR 2355210 A1 FR2355210 A1 FR 2355210A1 FR 7618118 A FR7618118 A FR 7618118A FR 7618118 A FR7618118 A FR 7618118A FR 2355210 A1 FR2355210 A1 FR 2355210A1
Authority
FR
France
Prior art keywords
shock absorber
telescopic hydraulic
hydraulic shock
orifice
secondary 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.)
Granted
Application number
FR7618118A
Other languages
French (fr)
Other versions
FR2355210B1 (en
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.)
Automobiles Peugeot SA
Original Assignee
Automobiles Peugeot SA
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 Automobiles Peugeot SA filed Critical Automobiles Peugeot SA
Priority to FR7618118A priority Critical patent/FR2355210A1/en
Publication of FR2355210A1 publication Critical patent/FR2355210A1/en
Application granted granted Critical
Publication of FR2355210B1 publication Critical patent/FR2355210B1/fr
Granted 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

Abstract

The cylinder (1) of a telescopic hydraulic shock absorber is provided with a piston (2) which embodies two valves (14, 17). When relatively low shocks occur the fluid in the chamber (7) flows through the orifice (12), lifting the valve (14) off its seat and flowing out through the orifice (13). With very high shocks the pressure of the fluid in the space (20) is increased so that the piston (17) is forced upwards against the spring (18) allowing fluid to flow through the orifices (21, 22) into the space (20) and out through the orifice (13). This increases in flow reduces the piston resistance, allowing it to move at a higher speed and so absorb higher shock loads.
FR7618118A 1976-06-15 1976-06-15 Telescopic hydraulic shock absorber - has secondary valve to reduce resistance at high piston speed Granted FR2355210A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7618118A FR2355210A1 (en) 1976-06-15 1976-06-15 Telescopic hydraulic shock absorber - has secondary valve to reduce resistance at high piston speed

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7618118A FR2355210A1 (en) 1976-06-15 1976-06-15 Telescopic hydraulic shock absorber - has secondary valve to reduce resistance at high piston speed

Publications (2)

Publication Number Publication Date
FR2355210A1 true FR2355210A1 (en) 1978-01-13
FR2355210B1 FR2355210B1 (en) 1978-12-15

Family

ID=9174390

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7618118A Granted FR2355210A1 (en) 1976-06-15 1976-06-15 Telescopic hydraulic shock absorber - has secondary valve to reduce resistance at high piston speed

Country Status (1)

Country Link
FR (1) FR2355210A1 (en)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0014134A1 (en) * 1979-01-18 1980-08-06 Messier-Hispano-Bugatti (S.A) Shockabsorber for the tail prop of an aircraft
EP0017684A1 (en) * 1979-04-23 1980-10-29 Showa Manufacturing Co., Ltd. Hydraulic cylinder for a propulsion unit of an inboard or outboard motor
FR2476782A1 (en) * 1980-02-27 1981-08-28 Rca Corp DAMPER FOR SUSPENSION OF MOTOR VEHICLE
FR2581725A1 (en) * 1985-05-13 1986-11-14 Fiat Auto Spa Telescopic hydraulic shock absorber
US5392883A (en) * 1992-11-21 1995-02-28 August Bilstein Gmbh & Co. Kg Controllable hydraulic vibration dampener
US5507475A (en) * 1993-08-25 1996-04-16 Mercedes-Benz Ag Erector for holding a leaf-flap in various opening settings
ES2152149A1 (en) * 1998-04-02 2001-01-16 Ap Amortiguadores S A Damper with piston with high speed filter
JP2011226597A (en) * 2010-04-21 2011-11-10 Fuji Latex Kk Piston for shock absorber
JP2011231882A (en) * 2010-04-28 2011-11-17 Fuji Latex Kk Single tube type shock absorber
WO2017162763A1 (en) * 2016-03-24 2017-09-28 öHLINS RACING AB Check valve assembly

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0014134A1 (en) * 1979-01-18 1980-08-06 Messier-Hispano-Bugatti (S.A) Shockabsorber for the tail prop of an aircraft
FR2446766A1 (en) * 1979-01-18 1980-08-14 Messier Hispano Sa SHOCK ABSORBER FOR AERODYNE TAIL STAND
EP0017684A1 (en) * 1979-04-23 1980-10-29 Showa Manufacturing Co., Ltd. Hydraulic cylinder for a propulsion unit of an inboard or outboard motor
FR2476782A1 (en) * 1980-02-27 1981-08-28 Rca Corp DAMPER FOR SUSPENSION OF MOTOR VEHICLE
FR2581725A1 (en) * 1985-05-13 1986-11-14 Fiat Auto Spa Telescopic hydraulic shock absorber
US5392883A (en) * 1992-11-21 1995-02-28 August Bilstein Gmbh & Co. Kg Controllable hydraulic vibration dampener
US5507475A (en) * 1993-08-25 1996-04-16 Mercedes-Benz Ag Erector for holding a leaf-flap in various opening settings
ES2152149A1 (en) * 1998-04-02 2001-01-16 Ap Amortiguadores S A Damper with piston with high speed filter
JP2011226597A (en) * 2010-04-21 2011-11-10 Fuji Latex Kk Piston for shock absorber
JP2011231882A (en) * 2010-04-28 2011-11-17 Fuji Latex Kk Single tube type shock absorber
WO2017162763A1 (en) * 2016-03-24 2017-09-28 öHLINS RACING AB Check valve assembly
US10851903B2 (en) 2016-03-24 2020-12-01 Ohlins Racing Ab Check valve assembly
US11054048B2 (en) 2016-03-24 2021-07-06 öHLINS RACING AB Check valve assembly

Also Published As

Publication number Publication date
FR2355210B1 (en) 1978-12-15

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Legal Events

Date Code Title Description
ST Notification of lapse