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Damping valve device with a multi-stage damping characteristic curve

A damping valve, damping medium technology, applied in the direction of shock absorbers, shock absorbers, springs/shock absorbers, etc.

Inactive Publication Date: 2015-04-29
ZF FRIEDRICHSHAFEN AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It is difficult to solve this contradiction with conventional damping valves

Method used

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  • Damping valve device with a multi-stage damping characteristic curve
  • Damping valve device with a multi-stage damping characteristic curve

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Experimental program
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Effect test

Embodiment Construction

[0019] figure 1 A portion of the shock absorber 1 is shown in the region of the damping valve arrangement 3 , which is arranged in the cylinder 7 on the piston rod 5 as a carrier. The piston 9 as first damping valve body and part of the damping valve arrangement 3 divides the cylinder 7 into a piston rod-side working chamber 11 and a piston rod-distant working chamber 13 . In the piston 9, at least one throughflow channel 15 is arranged in each flow direction of the damping medium in the cylinder 7, the outlet of which is at least partly covered by at least one valve disk 17, thereby forming a first Damping valve 19. In this specific embodiment, two through-flow channels are shown for the through-flow during the extension movement of the piston rod 5 . The flow channel provided for the sliding movement is formed in another section of the piston 9 and is therefore not visible.

[0020] A flow channel 21 in the piston rod 5 is connected to the piston rod-side working chamber...

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PUM

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Abstract

The device (3) has a piston (9) and a steam valve housing (25) that are provided with passage channels (15, 21) that are hydraulically connected parallel to each other. The steam valve housing is fixed on a piston rod (5), and one passage channel is provided in the piston rod. The piston is fixed at the rod by a nut (45) and a fixation screw that form the steam valve housing that is designed as a single part. Valve disks (17, 31) of a steam valve (23) are designed independent of fixation of the piston via the nut and the fixation screw.

Description

technical field [0001] The invention relates to a damping valve arrangement with a multi-stage damping force characteristic curve according to the preamble of claim 1 . Background technique [0002] In the case of shock absorbers with conventional damping valve arrangements, ie, which cannot be adjusted arbitrarily via the actuator, the adjustment of the damping force characteristic curve always results in a compromise. On the one hand, driving safety must be ensured, for which a large damping force is appropriate; on the other hand, comfort requirements must be met. It is difficult to resolve this contradiction with conventional damping valves. [0003] DE 2022021 A1 discloses a shock absorber with a damping valve arrangement whose damping force characteristic curve has at least four damping force characteristic curve regions ( FIG. 9 ). For this purpose, two damping valves connected in parallel are used, by means of which different opening characteristics and in the maxi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16F9/34
CPCF16F9/516F16F9/348
Inventor H·布劳恩罗伊特R·莫勒
Owner ZF FRIEDRICHSHAFEN AG