Flow control valve for hydraulic variable shock absorbers

F - Mech Eng,Light,Heat,Weapons – 16 – F

Patent

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Details

F16F 9/342 (2006.01) F16F 9/46 (2006.01)

Patent

CA 2706127

The control valve is applied to a shock absorber, which comprises: a pressure tube (10); a piston (14) dividing the pressure tube (10) in compression and traction chambers (CC, CT) communicating with each other through the piston (14); a hydraulic fluid reservoir (20) provided with a selective bidirectional fluid communication with the compressor chamber (CC). The control valve (VC) communicates the traction chamber (CT) with the reservoir (20) and comprises a tubular body (40) provided with at least one radial passage (41) opened to the interior of the tubular body (40) and to the reservoir (20); a shutter pin (60) to be axially displaced within the tubular body (40), between a closing position and different open positions of the control valve (VC) for communicating the traction chamber (CT) with the reservoir (20); and an actuator means (A) for axially displace the shutter pin within the tubular body (40).

L'invention porte sur une soupape de régulation qui est appliquée à un amortisseur de chocs, qui comprend : un tube de pression (10) ; un piston (14) divisant le tube de pression (10) en des chambres de compression et de traction (CC, CT) communiquant l'une avec l'autre par l'intermédiaire du piston (14) ; un réservoir de fluide hydraulique (20) comportant une communication de fluide bidirectionnelle sélective avec la chambre de compression (CC). La soupape de régulation (VC) fait communiquer la chambre de traction (CT) avec le réservoir (20) et comprend un corps tubulaire (40) comportant au moins un passage radial (41) débouchant sur l'intérieur du corps tubulaire (40) et sur le réservoir (20) ; une broche d'obturation (60) devant être axialement déplacée à l'intérieur du corps tubulaire (40), entre une position de fermeture et différentes positions d'ouverture de la soupape de régulation (VC) pour faire communiquer la chambre de traction (CT) avec le réservoir (20) ; et des moyens d'actionnement (A) pour déplacer axialement la broche d'obturation à l'intérieur du corps tubulaire (40).

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