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Damping valve arrangement having forestage valve and main stage valve

A damping valve, pre-stage technology, applied in shock absorbers, spring/shock absorber design features, shock absorbers, etc., can solve problems such as unclear operation behavior, front valve body lift, etc., to improve the spring rate , Improve the effect of structural free space

Pending Publication Date: 2022-02-22
ZF FIEDRICHSHAFEN AG
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  • Summary
  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

This can cause the foreline valve body to lift from the emergency operating armature and exhibit ambiguous operating behavior

Method used

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  • Damping valve arrangement having forestage valve and main stage valve
  • Damping valve arrangement having forestage valve and main stage valve

Examples

Experimental program
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Embodiment Construction

[0031] figure 1 The damping valve arrangement 1 is shown as a component of the vibration damper 3 . In this embodiment, the damping valve arrangement 1 is arranged in a valve housing 5 which is fastened on an axially displaceable piston rod 7 . The valve housing 5 carries the piston ring 9 such that the valve housing divides the cylinder 11 into a piston rod side filled with damping medium and a working chamber 13 ; 15 remote from the piston rod. In principle, the invention is not limited to this spatial arrangement of the damping valve arrangement 1 .

[0032] The damping valve arrangement 1 comprises an electromagnetic actuator 17 with a valve armature 19 and an electromagnetic coil 21 . The electromagnetic coil 21 is connected to a power supply line 23 inside the piston rod 7 . The actuator 17 serves to actuate a pre-stage valve body 25 in a pre-stage valve 27 , wherein the pre-stage valve 27 actuates a main-stage valve 29 of the damping valve arrangement 1 . The purpos...

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PUM

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Abstract

The invention relates to a damping valve arrangement comprising an electromagnetic actuator having a valve armature for actuating a preceding stage valve body in a preceding stage valve, the preceding stage valve actuating a main stage valve of the damping valve arrangement and the two valves being embodied as sequence valves, the damping valve arrangement having an emergency actuation device, the emergency actuation device has an emergency actuation armature and a tension spring which preloads the emergency actuation armature in the direction of the main stage valve, a stop which limits the axial adjustment stroke of the preceding stage valve body, the stop being formed by a stop spring which is functionally implemented between the emergency actuation armature and the preceding stage valve.

Description

technical field [0001] The invention relates to a damping valve device having a front valve and a main valve. Background technique [0002] A damping valve arrangement is known from DE 10 2016 221 896 A1, which comprises a pre-stage valve and a main-stage valve. The backing valve is embodied as a directional sequence valve. A reversing sequence valve is characterized by a synchronized operational movement of the two valve elements. [0003] In DE 10 2016 221 896 A1, the main-stage valve body has a seat surface on the rear side, which together with the pre-stage valve body forms a pre-stage valve. In the case of sequential valves, the effect can arise that the valve armature of the actuator has to carry out a very large adjustment stroke in order to adjust a sufficiently large outflow cross section at the backing valve. Especially in the case of a gentle damping force adjustment combined with a sudden, extreme lifting force on the main-stage valve body, the pre-stage valve...

Claims

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Application Information

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IPC IPC(8): F16F9/46F16F9/34
CPCF16F9/46F16F9/464F16F9/34F16F9/3488F16F2230/24
Inventor A·萨尔布雷A·安德烈什
Owner ZF FIEDRICHSHAFEN AG
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