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Fluid-filled, frequency-dependent damper

A fluid-filled, damper technology, used in shock absorbers, shock absorbers, springs/shock absorbers, etc., to solve problems such as increased damping resistance and inability of dampers to achieve frequency-dependent characteristics

Active Publication Date: 2014-10-08
KONI BV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In said case a part of the fluid moves from the first main chamber to the second main chamber through the passage (partially) closed by the auxiliary piston during the continuous movement of the piston rod, leading to an increase in the damping resistance
The damper is not able to achieve other frequency-dependent characteristics required in certain technical fields

Method used

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  • Fluid-filled, frequency-dependent damper
  • Fluid-filled, frequency-dependent damper
  • Fluid-filled, frequency-dependent damper

Examples

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Embodiment Construction

[0027] figure 1 A damper 1 is shown, in this example a train damper. The damper consists of a cylinder 2 provided with a cylinder attachment portion 30 and a piston 3 connected to an opposite piston attachment portion 31 by means of a piston rod 24 . The piston 3 divides the cylinder 2 into a first cylinder chamber 27 and a second cylinder chamber 28 . In the piston there are passages known per se in the prior art, such as a conduit 47 with a non-return valve 48, such that the piston can move relative to the cylinder. In addition, there is a throttle member 25 configured according to the invention in the piston. The throttling member is provided between a passage 33 leading to the first cylinder chamber 27 serving as the first main chamber with respect to the throttling member 25 and an opening 36 leading to the first main chamber serving as the throttling member 25 and an opening 36 leading to the The second cylinder chamber 28 of the second main chamber of the flow member...

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Abstract

A fluid-filled, frequency-dependent damper comprises a cylinder connected to a cylinder attachment portion; a piston connected to a piston attachment portion, the piston being displaceable in the cylinder; a first main chamber; a second main chamber; and a throttling member for allowing and influencing a fluid flow between the first and second main chambers within the damper when the cylinder attachment portion and the piston attachment portion move away from and / or move towards each other. The throttling member comprising an auxiliary cylinder and an auxiliary piston provided in the auxiliary cylinder. The auxiliary piston divides the auxiliary cylinder in a first auxiliary chamber comprising a first opening providing a fluid connection of the first auxiliary chamber with one of the first and second main chambers, the first opening being closable by a first part of the auxiliary piston, and a second opening providing a fluid connection of the first auxiliary chamber with the other one of the first and second main chambers; and a second auxiliary chamber in fluid connection with the other one of the first and second main chambers via a throttling passage. The first opening is closed by the auxiliary piston in a rest position and is opened by movement of the auxiliary piston in the auxiliary cylinder.

Description

technical field [0001] Provided herein relates to a fluid filled frequency dependent damper comprising: a cylinder connected to a cylinder attachment part; a piston connected to a piston attachment part movable in the cylinder a first main chamber; a second main chamber; and a throttle member constructed and arranged for when the cylinder attachment portion and the piston attachment portion move away from each other and / or toward each other Fluid flow between the first chamber and the second chamber within the damper is permitted and influenced. Background technique [0002] Such frequency-dependent dampers are known to be used in automotive engineering. The purpose of the damper is to change the damping characteristic as a function of frequency. In more detail, the aim is to reduce the damping characteristics at relatively high frequencies. Examples of such frequency dependent dampers can be found in US5129488. In said case a part of the fluid moves from the first main ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16F9/512F16F9/516F16F9/46
CPCF16F9/465F16F9/5126F16F9/516
Inventor 保罗·德·科茨克
Owner KONI BV
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