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Adjustable damping valve arrangement

A damping valve, adjustable technology, applied in the direction of valve device, valve operation/release device, valve fluid energy absorption device, etc., can solve the problem of no diaphragm axial support, etc., to achieve easy adjustment and avoid collision noise Effect

Inactive Publication Date: 2014-04-09
ZF FRIEDRICHSHAFEN AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There is also no axial support of the diaphragm to limit the lift stroke and thus increase the fatigue strength

Method used

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  • Adjustable damping valve arrangement
  • Adjustable damping valve arrangement

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Embodiment Construction

[0021] figure 1 A damping valve arrangement 1 for a shock absorber of any design is shown. The damping valve arrangement 1 can be arranged both within the cylinder 3 of the shock absorber between the two working chambers 5 ; 7 and also outside the cylinder 3 in a bypass line. Arranged in the damping valve housing 9 is an actuator 11 , which in this example comprises a solenoid coil 13 which exerts an axial actuating force on an axially movable pilot valve body 15 of a pilot valve 17 . The closing force on the main stage valve 19 can be influenced via the pilot valve 17 . This closing force is determined by the force of at least one valve spring 21 and the adjustment force of the actuator 11 acting against the valve spring force as well as the hydraulic closing force, which is controlled by the rigid main stage valve body 27 The pressure of the at least one pressure-loaded surface 23; 25 of .

[0022] The main-stage valve body 27 is additionally prestressed by a main-stage v...

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Abstract

An adjustable damping valve arrangement includes an actuator for controlling a main stage valve. The main stage valve has a rigid main stage valve body which carries out an axial operating movement relative to a valve seat surface of the main stage valve. A pre-opening valve having at least one spring element which in turn preloads a pre-opening valve body precedes the main stage valve body. The main stage valve body is supported on the valve seat surface in the closed operating position by the pre-opening valve. The pre-opening valve is divided by the valve seat surface into an inner pressure-impinged incident flow surface and an outer pressure-impinged incident flow surface. The inner pressure-impinged surface is operative for a first incident flow direction, and the outer pressure-impinged surface is operative for a second incident flow direction.

Description

technical field [0001] The invention relates to an adjustable damping valve arrangement according to the preamble of claim 1 . Background technique [0002] An adjustable damping valve arrangement is known from DE 10 2008 041 735 B3, in which the main stage valve can be actuated by means of a pilot valve. The main stage valve consists of a rigid main stage body seated on a seat ring. When flowing into the main-stage valve body through the through-hole, the main-stage valve body is lifted from the seat ring so that the damping medium can flow through the damping valve arrangement. [0003] During the reverse flow into the damping valve arrangement through the at least one radial bore, the seat ring lifts together with the main-stage valve body from the housing-side seat surface. [0004] Under certain conditions, rattling noises, caused at least in part by the seat ring, occur in the damping valve arrangement. A measure for noise reduction consists in providing a constant ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16F9/34
CPCF16K31/0655F16K31/0686F16K47/04Y10T137/87917F16F9/466F16F9/465F16K15/063F16K27/029
Inventor A·索尔布瑞
Owner ZF FRIEDRICHSHAFEN AG
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