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US 10,557,512 B2Granted
Vibration damper and vehicle
AssigneeZF Friedrichshafen AG
InventorsAndreas Förster, Achim Thomae
Life of this patent
Estimating the term…
Abstract
A vibration damper for a motor vehicle with a hydraulic unit and at least one valve for controlling the volume flow to the hydraulic unit, wherein the at least one valve and the hydraulic unit are arranged outside of the tube elements of the vibration damper and a motor vehicle including such vibration damper.
Claims17
A vibration damper (1) for a motor vehicle comprising:
- tube elements (2, 3);
- a hydraulic unit (9);
- and
- two valves constructed (7, 8) for controlling a volume flow to the hydraulic unit (9) during one of a compression stroke and a rebound stroke;
- and wherein the two valves (7, 8) and the hydraulic unit (9) are arranged in series outside of the tube elements (2, 3) of the vibration damper (1) so that a fluid flow path proceeds through one of the two valves through the hydraulic unit and through the other of the two valves and vice versa;
- and
- wherein each of the two valves comprises a bypass path which can be at least partially released through a respective valve (7, 8) and wherein a bypass path (24, 30) of one valve (8, 7) at least partially overlaps with the bypass path (30, 24) of the other valve (8, 7).
4 more elements
A vibration damper (1) for a motor vehicle comprising:
- tube elements (2, 3);
- a hydraulic unit (9);
- and
- two valves constructed (7, 8) for controlling a volume flow to the hydraulic unit (9) during one of a compression stroke and a rebound stroke;
- and wherein the two valves (7, 8) and the hydraulic unit (9) are arranged in series outside of the tube elements (2, 3) of the vibration damper (1) so that a fluid flow path proceeds through one of the two valves through the hydraulic unit and through the other of the two valves and vice versa;
- wherein each valve (7, 8) comprises a valve housing (28) and a valve slide (20) which is movable in the valve housing (28) during one of the compression stroke and the rebound stroke for at least partially closing at least one flow path (24, 30, 38) of a fluid flowing through the valves (7, 8);
- and
- wherein the valve slides (20) of each valve comprises pressure-impingement surface areas and wherein each of the valves (7, 8) has an input side (18, 44) and an output side (26, 47);
- the pressure-impingement surface areas (65, 66) of the valve slide (20) being substantially equally dimensioned for an opening pressure and a closing pressure;
- and the valve slide comprising a restriction (52) constructed for generating a pressure difference between an opening pressure and a closing pressure.
7 more elements
A vibration damper (1) for a motor vehicle comprising:
- tube elements (2, 3);
- a hydraulic unit (9);
- and
- two valves constructed (7, 8) for controlling a volume flow to the hydraulic unit (9) during one of a compression stroke and a rebound stroke;
- and wherein the two valves (7, 8) and the hydraulic unit (9) are arranged in series outside of the tube elements (2, 3) of the vibration damper (1) so that a fluid flow path proceeds through one of the two valves through the hydraulic unit and through the other of the two valves and vice versa;
- wherein each valve (7, 8) comprises a valve housing (28) and a valve slide (20) which is movable in the valve housing (28) during one of the compression stroke and the rebound stroke for at least partially closing at least one flow path (24, 30, 38) of a fluid flowing through the valves (7, 8);
- and
- additionally comprising a bypass path (24, 30) which can be closed by the valve slide (20) and is fluidically connected as a flow path to an input side (18, 44) of the valves (7, 8).
5 more elements
Dependencies are inferred from the claim text.