Hydraulic dampers with pressure regulated control valve and...

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

Patent

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F16F 9/34 (2006.01) F16F 9/512 (2006.01) F16F 9/54 (2006.01)

Patent

CA 2486946

A suspension damper (10) includes a housing bounding a main chamber. A piston rod (34) is slideably disposed within the main chamber of the housing. A main piston (38) is mounted on the first end of the piston rod within the main chamber of the housing so as to slideably engage against the housing in sealed engagement, the main piston having a first side and an opposing second side with a compression port extending therebetween. A control valve assembly is disposed within the main chamber and bounds a sealed valve compartment. The control valve assembly (100) is movable between a first position wherein the valve compartment is compressed to a first volume and a second position wherein the valve compartment is expanded to an enlarged second volume, the control valve assembly being movable under pressure so as to provide variable compression damping properties.

Selon cette invention, un système de suspension comprend un amortisseur et un système permettant d'ajuster à distance les propriétés de cet amortisseur. L'amortisseur comprend un boîtier contenant une chambre principale. Une tige de piston est placée de façon coulissante dans la chambre principale du boîtier. Un piston principal est monté sur la première extrémité de la tige de piston dans la chambre principale du boîtier de façon à s'engager de façon coulissante contre le boîtier dans un contact hermétique, le piston principal possédant une premier côté et un second côté opposé avec un port de compression s'étendant entre les deux. Un ensemble soupape de commande est placé dans la chambre principale et contient un compartiment de soupape scellé. L'ensemble soupape de commande est mobile entre une première position dans laquelle le compartiment de soupape est comprimé à un premier volume, et une seconde position dans laquelle le compartiment de soupape est agrandi jusqu'à un second volume élargi, cet ensemble soupape de commande pouvant être déplacé sous pression afin que soient obtenues des propriétés d'amortissement par compression variables.

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