Energy-absorbing structure for automobile steering column connection bracket

Abstract

The invention provides an energy absorption structure used for a motor steering pipe column connecting support. The energy absorption structure used for the motor steering pipe column connecting support comprises an energy absorption sheet which is fixedly connected with a motor body, an energy absorption sheet long groove is formed in the energy absorption sheet, a guide rail is further clamped on the energy absorption sheet and slides along the direction of the axis of the energy absorption sheet long groove, the guide rail is fixedly connected with the connecting support, the guide rail is further connected with an energy absorption block which stretches in the energy absorption sheet long groove, the energy absorption sheet long groove is provided with an installation section, the inner surface of the installation section is corresponding to the outer surface of the energy absorption block, and the width of other sections, except for the installation, of the energy absorption sheet long groove is smaller than the width of the installation section. According to the energy absorption structure used for the motor steering pipe column connecting support, through interference fit of the energy absorption block and the energy absorption sheet long groove, impact energy is converted into deformation energy of the energy absorption sheet, the impact energy can be continuously absorbed in a certain long distance, the structure is simple, assembly is convenient, reliability is high, requirements for the matching precision of all parts are not high, and manufacturing cost is low.

Description

technical field [0001] The invention relates to an energy-absorbing structure for a connecting bracket of an automobile steering column. Background technique [0002] According to a survey, the main reason for occupant injuries in car collisions is that the passenger compartment space is squeezed too much. According to the test data, when the intrusion of the passenger compartment is 15 cm in frontal impact, the serious injury rate is 20%, and when the intrusion of the passenger compartment reaches 61 cm, the serious injury rate is as high as 52%; the intrusion of the passenger compartment in the side impact is 8 cm , the serious injury rate was 22%, and when the passenger compartment intrusion reached 61 cm, the serious injury rate was 100%. If you want to protect the safety of the occupants when a car collides, the most important thing is to reduce the intrusion of the passenger compartment space as much as possible, so that the deformation of the car body and occupant pr...

AI Technical Summary

Problems solved by technology

In most existing structures, the mounting block of the vehicle body and the connecting bracket are connected by plastic pins. When a collision occurs, the impact energy can only be absorbed within 5mm of the collapse stroke, and the absorbed energy is less. Therefore, a reliable energy is required on the connecting bracket. Energy-absorbing structure that absorbs a large amount of impact energy during steering column collapse

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