Special-shaped rubber shock absorber

Abstract

The invention belongs to the technical field of rubber vibration isolators, and relates to a special-shaped rubber shock absorber. The special-shaped rubber shock absorber comprises a variable-section rubber shock absorption mat, a rubber shock absorption flat mat and a special-shaped bolt. Vibration energy and impact energy are transformed into heat energy and deformation energy of rubber materials through deformation of a rubber part, and the functions of vibration isolation and buffering are achieved on a light electronic board. A small-diameter part of the variable-section rubber shock absorption mat is arranged in a hole of the electronic board, and the function of attenuating the dynamic energy, in the radial direction of the shock absorber, of the electronic board is achieved. The function of attenuating the dynamic energy in the axial direction of the shock absorber is achieved through a large-diameter part of the variable-section rubber shock absorption mat and the rubber shock absorption flat mat. The variable-section rubber shock absorption mat and the rubber shock absorption flat mat are arranged on the electronic board through the special-shaped bolt. Meanwhile, dynamic displacement of the shock absorber is limited, and the functions of limiting and mounting are achieved.

Description

technical field [0001] The invention relates to a rubber shock absorber, in particular to a special-shaped rubber shock absorber. Background technique [0002] With the development of various equipment in the direction of high speed, miniaturization and high power, the circuits on the equipment are more concentrated, the size of electronic devices is smaller, the weight is lighter, and the installation is more compact. Dynamic loads such as vibration and impact, so there is an urgent need for a shock absorber structure that can achieve efficient damping and buffering in a very limited space. [0003] The commonly used T-shaped shock absorber structure and metal-rubber composite shock absorber structure usually face the following problems when solving the vibration and impact problems of lightweight electronic device structures: [0004] The traditional T-shaped rubber shock absorber structure is composed of rubber shock absorber, metal limit washer and limit bushing, such a...

AI Technical Summary

Problems solved by technology

When the installation space and interface size are limited after the design of the electronic device is completed, the distance between the mounting bolt and the mounting hole of the electronic device is very limited, and it is impossible to install the limit bushing and the limit washer, so that the limit of the vibration damping pad cannot be realized. bits and installation requirements

In addition, the thickness of electronic devices is generally 1-2mm. Traditional T-shaped rubber shock absorbers are installed symmetrically with vibration-damping pads. Limited by the thickness of electronic devices, the height of the part of the vibration-damping pad inside the mounting hole is 0.5-1mm. It is easy to fall out under the action of dynamic load environment, thus losing the effect of lateral vibration reduction

[0005] like figure 2 As shown, the metal-rubber composite shock absorber structure generally requires a large installation space due to its large size; and because the dynamic stiffness of the metal-rubber composite structure shock absorber is greater than that of the rubber shock absorber, The small mass of lightweight electronic devices will lead to a higher resonance frequency of the system after vibration reduction, thereby reducing the effect of vibration reduction and buffering; in addition, due to the existence of metal parts, its additional mass is also large, which does not meet the requirements of lightweight equipment requirements

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