FR2327450A2 - Shock absorber with variable damping rate - has rubber block placed between outer cylinder end and small dia. extension - Google Patents

Shock absorber with variable damping rate - has rubber block placed between outer cylinder end and small dia. extension

Info

Publication number
FR2327450A2
FR2327450A2 FR7617255A FR7617255A FR2327450A2 FR 2327450 A2 FR2327450 A2 FR 2327450A2 FR 7617255 A FR7617255 A FR 7617255A FR 7617255 A FR7617255 A FR 7617255A FR 2327450 A2 FR2327450 A2 FR 2327450A2
Authority
FR
France
Prior art keywords
rubber block
damping rate
shock absorber
outer cylinder
extension
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
FR7617255A
Other languages
French (fr)
Other versions
FR2327450B2 (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.)
Individual
Original Assignee
Individual
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
Priority claimed from GB41470/75A external-priority patent/GB1524867A/en
Application filed by Individual filed Critical Individual
Publication of FR2327450A2 publication Critical patent/FR2327450A2/en
Application granted granted Critical
Publication of FR2327450B2 publication Critical patent/FR2327450B2/fr
Granted legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G15/00—Resilient suspensions characterised by arrangement, location or type of combined spring and vibration damper, e.g. telescopic type
    • B60G15/02—Resilient suspensions characterised by arrangement, location or type of combined spring and vibration damper, e.g. telescopic type having mechanical spring
    • B60G15/06—Resilient suspensions characterised by arrangement, location or type of combined spring and vibration damper, e.g. telescopic type having mechanical spring and fluid damper
    • B60G15/07—Resilient suspensions characterised by arrangement, location or type of combined spring and vibration damper, e.g. telescopic type having mechanical spring and fluid damper the damper being connected to the stub axle and the spring being arranged around the damper
    • 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
    • F16F9/10—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using liquid only; using a fluid of which the nature is immaterial
    • F16F9/14—Devices with one or more members, e.g. pistons, vanes, moving to and fro in chambers and using throttling effect
    • F16F9/16—Devices with one or more members, e.g. pistons, vanes, moving to and fro in chambers and using throttling effect involving only straight-line movement of the effective parts
    • F16F9/18—Devices with one or more members, e.g. pistons, vanes, moving to and fro in chambers and using throttling effect involving only straight-line movement of the effective parts with a closed cylinder and a piston separating two or more working spaces therein
    • F16F9/185—Bitubular units
    • 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
    • F16F9/52—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 in case of change of temperature

Abstract

The hydraulic shock absorber has a rubber block (54) which adjusts the damping rate as the speed of piston displacement is varied. The block is between the end of the outer cylinder (8) of the damper and the smaller diameter cylindrical extension (56) of the oil reservoir, which is rigidly fixed to the vehicle (58). Inside the cylindrical extension is a non return valve (62) separating the reservoir from a space (63) connected (24) to the volume (8b) between the damper walls. During high speed compression, the damper unit moves as a whole and the rubber block deforms. This reduces the volume of the space (63) and oil flows through the non return valve to the reservoir. At the same time, the pressure in the outer jacket (8b) rises and causes a flexible diaphragm (11) to displace, against a reference pressure (10), a relief valve (14) from its seat, so reducing the damping rate.
FR7617255A 1975-10-09 1976-06-08 Shock absorber with variable damping rate - has rubber block placed between outer cylinder end and small dia. extension Granted FR2327450A2 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB41470/75A GB1524867A (en) 1974-10-11 1975-10-09 Shock absorber

Publications (2)

Publication Number Publication Date
FR2327450A2 true FR2327450A2 (en) 1977-05-06
FR2327450B2 FR2327450B2 (en) 1979-03-16

Family

ID=10419841

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7617255A Granted FR2327450A2 (en) 1975-10-09 1976-06-08 Shock absorber with variable damping rate - has rubber block placed between outer cylinder end and small dia. extension

Country Status (2)

Country Link
JP (1) JPS6032054B2 (en)
FR (1) FR2327450A2 (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2471873A1 (en) * 1979-12-17 1981-06-26 Honda Motor Co Ltd DEVICE FOR SUSPENDING THE BODY OF A VEHICLE FOR ADJUSTING THE HEIGHT OF THIS VEHICLE ABOVE THE GROUND BY LOW VARIATIONS IN THE OIL PRESSURE
EP0275503A1 (en) * 1986-12-30 1988-07-27 Jacques Sirven Damper with load compensation
US4971300A (en) * 1986-04-05 1990-11-20 Firma Carl Freudenberg Motor mount having improved hydraulic damping
US5788031A (en) * 1995-02-28 1998-08-04 Unisia Jecs Corporation Control cylinder unit for varying spring constant of vehicular stabilizer
EP1881227A2 (en) 2006-07-19 2008-01-23 Nissan Motor Co., Ltd. Shock absorber
EP1895187A1 (en) * 2006-09-02 2008-03-05 ZF Friedrichshafen AG Dampin device
FR3047286A1 (en) * 2016-02-02 2017-08-04 Peugeot Citroen Automobiles Sa MOTOR VEHICLE HYDROPNEUMATIC SUSPENSION CYLINDER AND WHEEL SUSPENSION EQUIPPED WITH SUCH A VERIN
FR3084424A1 (en) * 2018-07-30 2020-01-31 M-Otion Engineering DAMPING DEVICE COMPRISING AN ARRANGEMENT OF ATMOSPHERIC CHAMBERS

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5594043A (en) * 1979-01-09 1980-07-17 Kayaba Ind Co Ltd Valve mechanism for hydraulic damper
JPS55112442A (en) * 1979-02-23 1980-08-30 Kayaba Ind Co Ltd Damper
JPS57137733A (en) * 1981-02-17 1982-08-25 Showa Mfg Co Ltd Hydrauic shock absorber
FR2575254B1 (en) * 1984-12-20 1989-06-02 Sirven Jacques SHOCK ABSORBER FOR MOTOR VEHICLE SUSPENSION
JPS638440U (en) * 1986-07-03 1988-01-20
JP5169028B2 (en) * 2006-07-19 2013-03-27 日産自動車株式会社 shock absorber

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2471873A1 (en) * 1979-12-17 1981-06-26 Honda Motor Co Ltd DEVICE FOR SUSPENDING THE BODY OF A VEHICLE FOR ADJUSTING THE HEIGHT OF THIS VEHICLE ABOVE THE GROUND BY LOW VARIATIONS IN THE OIL PRESSURE
US4971300A (en) * 1986-04-05 1990-11-20 Firma Carl Freudenberg Motor mount having improved hydraulic damping
EP0275503A1 (en) * 1986-12-30 1988-07-27 Jacques Sirven Damper with load compensation
US5788031A (en) * 1995-02-28 1998-08-04 Unisia Jecs Corporation Control cylinder unit for varying spring constant of vehicular stabilizer
EP1881227A2 (en) 2006-07-19 2008-01-23 Nissan Motor Co., Ltd. Shock absorber
EP1881227A3 (en) * 2006-07-19 2009-06-03 Nissan Motor Co., Ltd. Shock absorber
US8695768B2 (en) 2006-07-19 2014-04-15 Nissan Motor Co., Ltd. Shock absorber
EP1895187A1 (en) * 2006-09-02 2008-03-05 ZF Friedrichshafen AG Dampin device
FR3047286A1 (en) * 2016-02-02 2017-08-04 Peugeot Citroen Automobiles Sa MOTOR VEHICLE HYDROPNEUMATIC SUSPENSION CYLINDER AND WHEEL SUSPENSION EQUIPPED WITH SUCH A VERIN
FR3084424A1 (en) * 2018-07-30 2020-01-31 M-Otion Engineering DAMPING DEVICE COMPRISING AN ARRANGEMENT OF ATMOSPHERIC CHAMBERS

Also Published As

Publication number Publication date
JPS6032054B2 (en) 1985-07-25
FR2327450B2 (en) 1979-03-16
JPS5247180A (en) 1977-04-14

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