Adjustable shock absorber

摘要

Shock absorber comprising a piston inside which a sleeve is present which can be operated separately from the piston. This sleeve is provided with through-flow conduits which can cooperate with apertures, which are fitted at a vertical distance, of a part of the piston in order to provide an auxiliary flow when the piston is displaced in the cylinder. Such auxiliary flow enters into a chamber which is delimited by one or more spring plates which act on a sleeve which loads the main valve against opening when it is pressed down by the spring plate. By filling the chamber with fluid, the load applied on the sleeve by the spring plate is reduced and the load on the main valve decreases, as a result of which the latter opens more readily.

主权项

1. A shock absorber (1, 31) comprising:
a cylinder (2, 32, 102) provided with a fastener, a piston (3, 33, 103, 133) which is displaceable therein and which is connected to a piston rod (4) provided with a fastener, in which the piston, for movement in the cylinder, includes a main passage for a main flow and an auxiliary passage for an auxiliary flow between opposite sides of the piston, in which a pressure-loaded main valve (18, 48, 85) is fitted in the main passage, in which a non-return valve (22) is fitted in the auxiliary passage, and an auxiliary plate-shaped valve (16, 46) delimits a chamber (28, 58) into which the auxiliary passage opens, in which a displaceable pressure element (15, 45) is arranged between the plate-shaped valve and the main valve, in which pressure on the main valve is applied by the pressure element (15, 45), and in which the plate-shaped valve (16, 46) acts on the pressure element, wherein the plate-shaped valve is embodied such that the maximum pressure force is applied by the pressure element on the main valve when the auxiliary flow through the auxiliary passage is absent and that the auxiliary flow through the auxiliary passage into the chamber acts in the chamber under the plate-shaped valve in order to reduce the force transmitted thereby onto the pressure element.