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Automotive shock absorber with micro porous metal fiber felt as damping element

A technology of metal fiber felt and metal fiber, which is applied in the direction of shock absorber, shock absorber, spring/shock absorber, etc., can solve the problem of insufficient absorption of vibration energy due to piston damping, limited throttle area of ​​valve plate, and vibration reduction The hydraulic oil viscosity of the device is low, etc.

Inactive Publication Date: 2018-02-13
北京久硕新材科技发展有限公司
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  • Application Information

AI Technical Summary

Problems solved by technology

In addition, the disadvantage of the gas-filled shock absorber is that the structure of the piston valve is complicated.
[0012] The hydraulic oil viscosity of the traditional shock absorber is low, the throttling area with the valve plate is limited, the internal friction effect caused by the throttling effect is insufficient, and the damping effect generated by each reciprocating motion of the piston or the absorption effect on vibration energy is insufficient

Method used

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  • Automotive shock absorber with micro porous metal fiber felt as damping element
  • Automotive shock absorber with micro porous metal fiber felt as damping element
  • Automotive shock absorber with micro porous metal fiber felt as damping element

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Embodiment Construction

[0023] A shock absorber according to the principle of the present invention mainly includes the following components: a steel cylinder 1 with a diameter of 70 mm, an upper oil seal assembly 2, a pressing element 3, and a microporous metal fixed on the upper part of the cylinder to play a damping role. The fiber felt disk 4 has a porosity of 75% and a minimum pore size of 25-30 microns. The metal fiber felt is made of 25 layers of 320-mesh stainless steel mesh and then vacuum sintered. The upper and lower ends are respectively made of porous steel plates with a thickness of 3 mm. For the protective layer, the inner circle and the adjacent parts of the piston rod are welded with steel pipes with a wall thickness of 5 mm and metal fiber felt before machining. The metal fiber felt used in disc 4 has an air permeability of 330-400L at room temperature without oil. / (min*dm 2 ) (test standard according to ISO 4022); the hydraulic oil inside the shock absorber adopts high-viscosity h...

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Abstract

Provided is an automotive shock absorber with micro porous metal fiber felt as a damping element. High viscosity hydraulic oil is adopted in the shock absorber; the micro porous metal fiber felt, rather than a common hydraulic valve is adopted as the damping element damping element, the hydraulic oil is forcefully divided by metal fibers to flow when flowing in micropores of the metal fiber felt;strong shearing and inner friction happen in an interface zone of the hydraulic oil and the metal fiber felt, and therefore an effective damping effect is achieved; and the vibrating energy can be fast and efficiently absorbed, the driving comfort is improved, and an abstract drawing is a typical schematic diagram of the automotive shock absorber with the micro porous metal fiber felt as the damping element.

Description

technical field [0001] The invention belongs to the field of shock absorbers for automobiles. technical background [0002] In modern automobile engineering, with the improvement of consumption upgrading, the requirements for high ride comfort and high comfort of vehicles are getting higher and higher. When the shock or vibration caused by ground disturbance during vehicle operation is transmitted through the wheels, the suspension is an effective vibration isolation device for the vehicle body. A well-matched shock absorber with the suspension can damp about 90% of the vibration energy. [0003] Car suspension, currently widely used is the cylinder hydraulic shock absorber, the working medium in the shock absorber is some kind of hydraulic oil, strictly speaking, it should be called a liquid turbulence damper. The liquid turbulence damper is a shock absorber that is quite mature in technology so far. Compared with resistance and energy absorption, it is light in weight an...

Claims

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Application Information

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IPC IPC(8): F16F9/084F16F9/36F16F9/32F16F9/34
CPCF16F9/084F16F9/3214F16F9/34F16F9/368
Inventor 不公告发明人
Owner 北京久硕新材科技发展有限公司
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