Spring

Abstract

The present invention belongs to a spring. A damping structure, which can damp the motion of the spring and contains high-damp liquid material, is arranged on the body of the spring. Since the damping structure is arranged on the body of the spring, when the spring is stressed to generate vibration or deformation, the high-damp liquid material is also deformed, great internal friction is generated inside the high-damp liquid material to absorb partial energy, so that the deformation is hindered and the vibration is attenuated, and since noise is also caused by the vibration, the noise is greatly reduced as well. Since the spring adopts the highly viscous high-damp liquid material, the spring can provide a relatively high damping ratio, which is sufficient for the vibration reduction of most of mechanical devices and vehicle structures, and even in a case requiring a high damping ratio, the needed extra damp is much less. Normally, an additional damping device is no longer needed, and therefore the structure is simplified. Moreover, the spring effectively eliminates the sympathetic vibration of self under the inherent frequency.

Description

technical field [0001] The present invention is a divisional application whose application number is 200310105524.9, and belongs to damping springs. Background technique [0002] Ordinary springs are generally made of pure elastic materials, and their damping is very small, especially metal springs. In practice, in order to increase its damping, it is sometimes used to put a layer of rubber tube on the outside of the spring or vulcanize ordinary rubber on the surface of the spring, but ordinary rubber is fundamentally a viscoelastic material with low damping and high elasticity. Under high-frequency action conditions, such as vibration and noise in the audio frequency range, there will be a certain damping effect. For most mechanical vibrations, the damping ratio is only 1-3%, and the damping ratio is even smaller when used in parallel with the spring. In most cases, the damping ratio is far from enough. For example, for the vibration reduction and isolation of general vehi...

AI Technical Summary

Problems solved by technology

In practice, in order to increase its damping, it is sometimes used to put a layer of rubber tube on the outside of the spring or vulcanize ordinary rubber on the surface of the spring, but ordinary rubber is fundamentally a viscoelastic material with low damping and high elasticity. Under high-frequency action conditions, such as vibration and noise in the audio frequency range, there will be a certain damping effect. For most mechanical vibrations, the damping ratio is only 1-3%, and the damping ratio is even smaller when used in parallel with the spring. In most cases, the damping ratio is far from enough. For example, for the vibration reduction and vibration isolation of general vehicles and equipment, the damping ratio is required to be between 10% and 30%. At this time, it must be used with additional damping devices, which makes the structure complicated.

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