Fluid absorber with adjustable damping coefficient

Abstract

The invention provides a fluid buffer with adjustable damping coefficient, it includes: cylinder tank which has a placing space, the placing space is filled with fluid; piston which is equipped with piston head moving in the placing space and the piston bar extending from the piston head to two ends of the tank body. The piston head is equipped with at least one fluid channel passing through the piston head and the piston head consists of at least one piston discs. The piston disc includes: the disc plate which is equipped with the via hole forming the fluid channel; the valve which is installed on the disc body and can be moved from the first position opening the via hole to the second position closing the via hole, and vice versa; the driver which controls the movements of valve through the deformation of from memory alloy, thereby opens or closes said fluid channel to adjust the number of damping force. Due to the valve in buffer of the invention is driven by form memory alloy, so the leaning on the outer force is eliminated, so the reliability of the buffer is maintained.

Description

technical field [0001] The invention relates to a shock absorber, in particular to a fluid shock absorber with adjustable damping coefficient. Background technique [0002] After some materials have undergone plastic deformation, they can return to the shape before deformation after a suitable heating process. This phenomenon is called the shape memory effect (SME), and the alloy with the shape memory effect is called the shape memory alloy (SMA). . At present, the shape memory alloys that have been successfully developed include TiNi-based shape memory alloys, copper-based shape memory alloys, and iron-based shape memory alloys. When the shape memory alloy passes through its phase transition point during the cooling process, its crystal structure undergoes a phase transition, that is, it transforms from a high-temperature phase (austenite) to a low-temperature phase (martensite). This phase transition is the basis for the unique shape memory capabilities of these alloys. ...

AI Technical Summary

Problems solved by technology

[0006] At present, although there are some technologies for applying shape memory alloys to shock absorbers (see patent documents, such as US6796408, US6394242, US5750272, US5564537, etc.), these shock absorbers cannot adjust their own damping coefficients

There are some adjustable damping coefficient hydraulic shock absorbers in the prior art, which adjust the damping coefficient through rheological technology (changing the viscosity coefficient of the damping oil), but their performance in adjusting the damping coefficient is not stable