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1. WO2020193885 - SHOCK ABSORBER WITH A SELF-ADJUSTABLE LIMIT STOP EQUIPPED WITH A FLOATING PLUG VALVE

Publication Number WO/2020/193885
Publication Date 01.10.2020
International Application No. PCT/FR2020/050226
International Filing Date 10.02.2020
IPC
F16F 9/18 2006.01
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
16ENGINEERING ELEMENTS OR UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
FSPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
9Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
10using liquid only; using a fluid of which the nature is immaterial
14Devices with one or more members, e.g. pistons, vanes, moving to and fro in chambers and using throttling effect
16involving only straight-line movement of the effective parts
18with a closed cylinder and a piston separating two or more working spaces therein
F16F 9/49 2006.01
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
16ENGINEERING ELEMENTS OR UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
FSPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
9Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
32Details
48Arrangements for providing different damping effects at different parts of the stroke
49Stops limiting fluid passage, e.g. hydraulic stops
F16F 9/512 2006.01
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
16ENGINEERING ELEMENTS OR UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
FSPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
9Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
32Details
50Special means providing automatic damping adjustment
512Means responsive to load action on the damper or fluid pressure in the damper
CPC
F16F 2222/06
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
FSPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
2222Special physical effects, e.g. nature of damping effects
06Magnetic or electromagnetic
F16F 9/185
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
FSPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
9Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
10using liquid only; using a fluid of which the nature is immaterial
14Devices with one or more members, e.g. pistons, vanes, moving to and fro in chambers and using throttling effect
16involving only straight-line movement of the effective parts
18with a closed cylinder and a piston separating two or more working spaces therein
185Bitubular units
F16F 9/49
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
FSPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
9Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
32Details
48Arrangements for providing different damping effects at different parts of the stroke
49Stops limiting fluid passage, e.g. hydraulic stops ; or elastomeric elements inside the cylinder which contribute to changes in fluid damping
F16F 9/5123
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
FSPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
9Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
32Details
50Special 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
512Means 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
5123responsive to the static or steady-state load on the damper
Applicants
  • PSA AUTOMOBILES SA [FR]/[FR]
Inventors
  • BONTRON, Francis
  • MONTEIL, Christophe
  • ALLEGRE, Jean Marc
  • CAVAREC, Alan
  • RIGUEL, Frederic
Agents
  • MOMBELLI, Philippe
Priority Data
190317527.03.2019FR
Publication Language French (FR)
Filing Language French (FR)
Designated States
Title
(EN) SHOCK ABSORBER WITH A SELF-ADJUSTABLE LIMIT STOP EQUIPPED WITH A FLOATING PLUG VALVE
(FR) AMORTISSEUR AVEC BUTEE DE FIN DE COURSE AUTO-ADAPTABLE EQUIPEE D'UN BOISSEAU FLOTTANT
Abstract
(EN)
The invention relates to a hydraulic shock absorber comprising a shock absorber piston (6) secured to a main rod (8), sliding in an inner tube (4), and a compensation chamber (20) surrounding the inner tube (4), receiving the fluid displaced by the entry of the main rod (8) into the shock absorber, the shock absorber piston (6) supporting, towards the front, a limit stop rod (10) comprising, at its end, a stop piston (12) entering into a stop tube (14) having holes for the discharge of fluid (18, 34), the compensation chamber (20) comprising a plug valve (22) sliding axially around the inner tube (4) with a braking system, forming a float moving according to the level of fluid in this compensation chamber (20), which acts according to its movement on the adjustable holes (34) of the stop tube (14).
(FR)
Amortisseur hydraulique comportant un piston d'amortisseur (6) fixé à une tige principale (8), coulissant dans un tube intérieur (4), et une chambre de compensation (20) entourant le tube intérieur (4), recevant le fluide déplacé par l'entrée de la tige principale (8) dans l'amortisseur, le piston d'amortisseur (6) supportant vers l'avant une tige de butée de fin de course (10) comprenant à son extrémité un piston de butée (12) rentrant dans un tube de butée (14) présentant des perçages de sortie de fluide (18, 34), la chambre de compensation (20) comportant un boisseau (22) coulissant axialement autour du tube intérieur (4) avec un système de freinage, formant un flotteur se déplaçant suivant le niveau de fluide dans cette chambre de compensation (20), qui agit suivant son déplacement sur des perçages réglables (34) du tube de butée (14).
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