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Hydraulic damper with hydraulic stop

A hydraulic damper and secondary technology, applied in the field of hydraulic dampers, can solve problems such as high load and excessive damping force

Active Publication Date: 2017-06-30
BEIJING WEST IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

While such a progressive nature is advantageous, it also creates a high risk of producing excessive damping forces, which can be damaging to various damper components (particularly those of the hydraulic stop itself) and (possibly damaged) other Structural vehicle components cause extremely high loads

Method used

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  • Hydraulic damper with hydraulic stop
  • Hydraulic damper with hydraulic stop
  • Hydraulic damper with hydraulic stop

Examples

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Embodiment Construction

[0032] The reference numbers of functionally equivalent elements remain the same on all figures of the drawings, wherein where appropriate, the reference numbers are supplemented with an additional suffix (a, b) to distinguish functionally identical but structurally different elements.

[0033] figure 1 One embodiment of a twin-tube damper 1 a according to the invention is presented that can be employed in a typical motor vehicle suspension. The damper 1a includes an outer tube 2 and a main tube 3 filled with a viscous working fluid. A movable main piston assembly 4 is provided in the main pipe 3 . The main piston assembly 4 is attached to the main piston rod 5 which leads to the outside of the damper 1 a through a sealed piston rod guide 6 . The damper 1 a is also provided with a base valve assembly 7 which is fixed at the other end of the main pipe 3 . The main piston assembly 4 is slidably positioned against the inner surface of the main pipe 3 and divides the tube 3 int...

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PUM

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Abstract

Provivded is a hydraulic damper with a hydraulic stop. A hydraulic damper for a motor vehicle includes a tube having a main section and a narrowed section. The main piston assembly is disposed inside the main section. The main piston rod is attached to the main piston assembly. The secondary lever is coupled to the main piston rod. The spring seat is disposed about the secondary lever. The spring engages the spring seat and preloads the spring seat. The secondary piston is disposed about the secondary pole and is coupled to the secondary pole. The secondary piston has an axial projection and an annular projection abutting said spring seat. The annular protrusions define a plurality of axial grooves. The retaining member is fixed to the secondary pole and has an outer surface defining a plurality of radial grooves. The seal ring is slidably disposed about the axial projection. The annular passage is radially defined between the seal ring and the axial projection.

Description

technical field [0001] The invention relates to a hydraulic damper for a vehicle. More specifically, the present invention relates to a hydraulic damper for a vehicle comprising a primary piston assembly and a secondary piston assembly. Background technique [0002] Hydraulic dampers are known in the art to include a primary piston assembly located in the main section of the tube of the damper, and a secondary piston assembly located in the narrowed section of the tube. The secondary piston assembly forms a so-called hydraulic stop which generates an additional damping force at a predetermined end section of the operating range of the piston rod stroke. Exemplary dampers provided with such hydraulic stop means are disclosed in US Patent No. 3,447,644 and European Patent Application Publication Nos. EP 2 302 252A2 and EP 2 952 775A2. [0003] Such a hydraulic stop device makes it possible to generate an additional damping force mainly dependent on the position of the piston...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16F9/32F16F9/34
CPCF16F9/3214F16F9/3221F16F9/34F16F9/49F16F9/3257F16F9/3482F16F9/585
Inventor R·P·戈尔泽斯克P·A·弗拉赤特
Owner BEIJING WEST IND CO LTD
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