Safety belt braking method based on shear thickening fluid drive, and safety belt brake

A technology of thickening liquid and safety belt, which is applied in the direction of belt tightener, etc., can solve the problems of reduced safety, high complexity, and high cost under special conditions, and achieve the effects of simple and reliable structure, improved safety, and large damping output

Inactive Publication Date: 2019-05-24
NORTHWESTERN POLYTECHNICAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Aiming at the problems of traditional safety belt brakes with high complexity, reduced safety under special conditions, and high cost, the invention proposes a novel safety belt braking method and its shear thickening brake

Method used

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  • Safety belt braking method based on shear thickening fluid drive, and safety belt brake
  • Safety belt braking method based on shear thickening fluid drive, and safety belt brake

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Embodiment Construction

[0015] The present invention will be further described below in conjunction with the accompanying drawings. Such as figure 1 As shown, the present invention includes a rotating shaft 1, a cylinder wall 2, a normally open liquid channel 3, a bolt 4, a sealed bearing 5, a turntable 6, a shear thickening liquid 7, and a cover 8; the cylinder body is filled with the shear thickening liquid 7, One end of the rotating shaft 1 drives the turntable 6 to rotate in the cylinder body, and the other end extends out of the cylinder body to connect with the safety belt; the turntable 6 in the cylinder body is provided with a normal flow channel 3 to assist the distribution of the shear thickening liquid in the cylinder body uniform.

[0016] Working principle of the present invention:

[0017] When an external force is applied to the seat belt, the seat belt drives the rotating shaft at one end of the brake and the turntable to rotate relative to the cylinder body, and the side of the tur...

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PUM

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Abstract

The invention discloses a novel safety belt braking method based on shear thickening fluid drive, and a safety belt brake. As shown in the drawing, a cylinder is filled with shear thickening fluids, one end of a rotating shaft drives rotating discs to rotate around the rotating shaft in the cylinder, and the other end of the rotating shaft extends from the cylinder to be connected with a safety belt. A sealing bearing and the rotating discs are fixed to the rotating shaft in the cylinder; normally-open fluid passages formed in the rotating discs are effectively communicated with the shear thickening fluids among the rotating discs to balance the pressure in an cavity; small gaps are reserved between the side surfaces of the rotating discs and the wall of the cavity, and are filled with thefluids; the side surfaces of the rotating discs rotate relative to the wall of the cavity. The damping force of the brake can be regulated by modifying configuration parameters of the shear thickening fluids. The safety belt brake has the advantages of simple and reliable structure, improved safety due to intelligent passive braking, adjustable brake damping, large brake damping force, high comfort level and low cost.

Description

technical field [0001] The invention relates to a practical passive braking technology, in particular to a more reliable, more comfortable and low-cost shear-thickening fluid brake that meets the braking requirements of safety belts for vehicles Background technique [0002] The shear thickening brake is a kind of brake that uses the intelligent material shear thickening fluid as the working medium. Shear thickening fluid is an intelligent material with excellent performance. Its viscosity characteristics depend on its shear strain rate. Phase, that is, shear thickening behavior occurs, and this change is reversible. When the load is removed, it can instantly return from the solid phase to the liquid phase. The shear thickening brake utilizes the characteristic of the shear thickening fluid to show that the damping force rises sharply beyond the critical speed, and plays the role of brake protection. The seat belt brake of traditional vehicles needs to rely on complex mech...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60R22/46
Inventor 尹剑波王旭王智博
Owner NORTHWESTERN POLYTECHNICAL UNIV
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