Shock absorber

摘要

A shock absorber includes a cylinder; a piston movable therein and dividing the cylinder in first and second cylinder chambers; a cylinder attachment for attachment to a first part of a vehicle and connected to the cylinder; and a piston attachment for attachment to a second part of a vehicle and connected to the piston. The piston attachment and cylinder attachment move towards one another on an inward movement and away from one another on an outward movement. The piston includes a first inward channel; a first inward valve to open the first inward channel on inward movement; a first outward channel; a first outward valve to open the first outward channel on outward movement; a second inward channel; a second inward valve to open the second inward channel on inward movement; a second outward channel; and a second outward valve to open the second outward channel on outward movement.

主权项

1. A shock absorber comprising:
a cylinder; a piston movable within the cylinder along a cylinder wall, the piston sealing against the cylinder wall and dividing the cylinder in a first cylinder chamber at a first piston side of the piston and a second cylinder chamber at a second piston side of the piston, the second piston side opposing the first piston side, and the first and second cylinder chambers being filled with a fluid; a cylinder attachment constructed and arranged for attachment to a first part of a vehicle and connected to the cylinder; and
a piston attachment constructed and arranged for attachment to a second part of a vehicle and connected to the piston, the piston attachment and cylinder attachment being arranged to move towards one another on an inward movement and away from one another on an outward movement, wherein the piston comprises
a channel constructed and arranged for fluid connection between the first and second cylinder chambers; anda valve constructed and arranged to open the channel for fluid flow on one of inward movement and outward movement in dependence of a fluid pressure in the channel, and to at least substantially close the channel for fluid flow on the other one of inward movement and outward movement, the valve comprising a plate pack, the plate pack closing against a first valve seat and comprising
a recess plate that comprises at least one recess in fluid communication with a side of the plate pack from which fluid may pass the plate pack upon opening from the first valve seat; anda cover plate arranged adjacent the recess plate to cover the recess plate to allow fluid pressure from fluid passing the at least one recess in the recess plate to act on the cover plate and to allow opening of the cover plate with respect to the recess plate, the cover plate and recess plate being configured and arranged such that a fluid connection is provided across the plate pack upon opening of the cover plate with respect to the recess plate, the at least one recess acting as a flow resistance to fluid flow passing the at least one recess and the cover plate in an open position of the cover plate with respect to the recess plate.