A small electronic component double-layer shock absorber based on leaf springs

Abstract

The invention relates to a small-sized electronic element double-deck shock absorber based on a flat spring. The shock absorber comprises the flat spring, a middle mass block, at least one secondary spring and a mounting plate for mounting a to-be-damped element, wherein the mounting plate is positioned above the flat spring; a through hole for providing shape change space for the secondary spring is formed in the flat spring; one end of the secondary spring is mounted on the lower end face of the mounting plate; the middle mass block is mounted on the lower side face of the flat spring; the other end of the secondary spring penetrates through the through hole in the flat spring to be connected with the middle mass block. The small-sized electronic element double-deck shock absorber based on a flat spring realizes the double-deck effect in a single shock absorber and has the advantages of being small in size, low in centroid and effectively reducing vibrational coupling in the height direction.

Description

technical field [0001] The invention relates to the technical field of shock absorption, in particular to a double-layer shock absorber for small electronic components based on leaf springs. Background technique [0002] In vibration engineering, as an isolation and absorption device for vibration energy, shock absorbers are widely used in resisting vibration shocks and protecting equipment structures. [0003] The shock absorption of electronic components usually uses elastic elements such as ordinary rubber, sponge rubber, and steel wire rope as shock absorbers. With the development of technology, electronic components such as airborne synthetic aperture radar crystal oscillators have higher and higher requirements for shock absorption. In traditional designs, one level of shock absorption is usually designed between the combination and the cabinet, and one level of shock absorption is designed between the combination and the plug-in. , A first-level shock-absorbing metho...

AI Technical Summary

Problems solved by technology

Because the intermediate mass is the mass of the combination or the plug-in itself, it is difficult to adjust, resulting in the inability to optimize the shock absorption effect, which greatly reduces the shock absorption effect; and because the stiffness of the intermediate mass (combination or plug-in) is low, there is a deviation in the design stiffness, which is actually measured The damping effect is much worse than the theoretical design value, and cannot meet the design requirements of crystal oscillator components

The damping effect of this type of design has been excavated to the limit, and usually the natural frequency of the system can only be further reduced by reducing the stiffness of the shock absorbers at all levels, which will inevitably cause excessive impact deformation of the damping system and reduce system stability

[0004] The elastic elements of traditional shock absorbers are usually based on elastic rubber, metal rubber, coil spring, steel wire rope, gas, liquid, electromagnetic force, etc. Based on this design, the height and size are usually large, such as double-layer shock absorption, which is only suitable for installation In the case of large space, it can generally only be applied to the positive shock absorption of power machinery, air conditioners and other equipment, and there are usually problems of high center of mass height and serious vibration coupling, which makes the double-layer shock absorption in the negative shock absorption design of small components. In addition, the traditional double-layer damping design usually requires multiple shock absorbers to be installed on two levels of mass, and the damping system is relatively complicated.

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