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1. WO2020193883 - DAMPER WITH TRAVEL LIMIT STOP PROVIDED WITH A PRESSURE LIMIT VALVE

Publication Number WO/2020/193883
Publication Date 01.10.2020
International Application No. PCT/FR2020/050224
International Filing Date 10.02.2020
IPC
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
CPC
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
Applicants
  • PSA AUTOMOBILES SA [FR]/[FR]
Inventors
  • CAVAREC, Alan
  • ALLEGRE, Jean Marc
  • MONTEIL, Christophe
  • RIGUEL, Frederic
  • GUINGAND, Frederic
Agents
  • MOMBELLI, Philippe
Priority Data
190322828.03.2019FR
Publication Language French (FR)
Filing Language French (FR)
Designated States
Title
(EN) DAMPER WITH TRAVEL LIMIT STOP PROVIDED WITH A PRESSURE LIMIT VALVE
(FR) AMORTISSEUR AVEC BUTEE DE FIN DE COURSE EQUIPEE D'UN CLAPET DE LIMITATION DE PRESSION
Abstract
(EN)
Hydraulic suspension damper comprising a damper piston which slides in an internal tube (2) and which is displaced during compression of the damper in an axial direction referred to as the forward direction, the damper piston being extended by a stop piston (10) which enters, at the end of travel of the damper, a stop chamber (16) which is provided with bores (18), forcing the fluid out of this stop chamber (16) in order to brake the travel end, the stop chamber (16) comprising a lateral bore (44) which is arranged after a predefined travel (C0) of the stop piston (10) in the stop chamber (16), and which is provided with a valve (34) for limiting the pressure in this stop chamber (16).
(FR)
Amortisseur hydraulique de suspension comportant un piston d'amortisseur coulissant dans un tube intérieur (2), qui se déplace lors d'une compression de l'amortisseur dans une direction axiale appelée direction avant, le piston d'amortisseur se prolongeant par un piston de butée (10) rentrant en fin de course de l'amortisseur dans une chambre de butée (16) équipée de perçages (18), en refoulant le fluide hors de cette chambre de butée (16) pour freiner la fin de course, la chambre de butée (16) comprenant un perçage latéral (44) disposé après une course prédéfinie (C0) du piston de butée (10) dans la chambre de butée (16), équipé d'un clapet (34) de limitation de la pression dans cette chambre de butée (16).
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