Manufacturing method of crumpling structure for bus instrument desk pipe column

Abstract

The invention discloses a manufacturing method of a crumpling structure for a bus instrument desk pipe column. The manufacturing method comprises the following steps that 40Cr is adopted in advance for quenching and tempering, a steering shaft is manufactured and subjected to a dynamic balancing test through a balancing machine, and the steering shaft is prepared; 55# steel is adopted in advance for manufacturing a spherical shell, a thread part of a spline is subjected to high-frequency quenching heat treatment, 20CrMoTi is adopted for manufacturing a starlike sleeve and a retainer, GCr15 isadopted for manufacturing steel balls, and a universal joint is prepared; and an electroplated Ni-P alloy or an electroplated Ni-Fe alloy is adopted in advance for manufacturing a transmission shaft and a transmission shaft sleeve in an electroplated mode, surface quenching treatment is conducted, a nylon PA11 special material is subjected to injection molding on the surface of the transmission shaft, and the transmission shaft and the transmission shaft sleeve are connected in a spline matched sliding mode to be assembled. According to the manufacturing method of the crumpling structure for the bus instrument desk pipe column, manufacturing and assembling are conducted through a system, when a vehicle is collided, a large buffer area can be provided for a human body, and the crumbling effect of the pipe column is stabilized; and the steering pipe column and a vehicle passive restraining system are subjected to matching optimization together, and thus the optimal crumbling moment of the pipe column is guaranteed.

Description

technical field [0001] The invention relates to the technical field of automobiles, in particular to a method for manufacturing a column collapse structure of an instrument panel of a passenger car. Background technique [0002] Since the car was born at the end of last century, it has gone through more than one hundred years of ups and downs. Starting from the first three-wheeled car made by Karl Benz, the car, a means of transportation, has achieved considerable development, and the car has become an indispensable tool for human life in the world today. Entering the 21st century, people's pursuit of automobiles is more towards safety, environmental protection and energy saving. Among them, car safety is considered to be the most important factor. Automobile safety is paid more and more attention. [0003] According to the statistics of traffic accidents and the research on automobile crash tests, when a car has a frontal collision, 46% of the driver's injuries are cau...

AI Technical Summary

Problems solved by technology

Most of the existing collapse structures are mechanical structures, and the consistency of the collapse length is difficult to guarantee, so that the consistency of human body safety in collisions cannot be effectively guaranteed

And because the collapse of the pipe column is caused by the forward movement of the human body, the pressure on the chest of the human body is relatively large, and it will cause great harm to the human body in a vehicle collision.

[0005] For the problems in related technologies, no effective solutions have been proposed yet

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