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Energy-absorbing device of bumper

A technology of energy-absorbing devices and bumpers, which is applied to bumpers and other directions to achieve the effect of simple devices and uniform energy absorption

Active Publication Date: 2012-08-22
CHERY AUTOMOBILE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a simple and practical bumper that can fully deform and absorb energy and has a better load transmission path in order to make up for the deficiencies of existing automobile anti-collision energy-absorbing devices. Anti-collision energy absorbing device

Method used

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  • Energy-absorbing device of bumper
  • Energy-absorbing device of bumper
  • Energy-absorbing device of bumper

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] Example 1 as figure 1 As shown, a bumper energy-absorbing device includes a bumper energy-absorbing box 2, which is composed of a plurality of hollow tubes 3 superimposed. The two sections are respectively connected with the longitudinal beam reinforcement plate 4 and the energy-absorbing box installation plate 1 by welding. The form of the hollow pipe is also various. According to the external conditions such as the vehicle layout, the shape of the pipe can be round, oval, rhombus, triangle, etc.; the diameter of the pipe is controlled at 15-25mm; the thickness of the pipe is controlled at 0.6- 2mm; the size of the circle surrounded by the pipe is basically equal to the section size of the longitudinal beam; the number of superimposed layers of the pipe is controlled at 6 to 8 layers; the material of the pipe is usually selected from medium and weak materials, such as: B340, 590DP, B210P1, ST16, ST14, ST12, etc. At the same time, the pipe can also be filled with foam ...

Embodiment 2

[0014] Example 2 as figure 2 As shown, a bumper energy-absorbing device, the energy-absorbing box can also be changed from the superimposed welding method of the pipe to the integral spiral type. All the other are with embodiment 1.

Embodiment 3

[0015] Example 3 as image 3 As shown, a bumper energy-absorbing device, the energy-absorbing box can also be a trapezoidal stack of pipes. All the other are with embodiment 1.

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PUM

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Abstract

The invention discloses a bumper energy absorber, which is mainly formed by a plurality of overlaid hollow pipes, wherein both ends of each hollow pipe are respectively connected with a stringer reinforcing plate and an energy absorbing box mounting plate. Moreover, the hollow pipes are in various forms; therefore, according to external conditions such as car model arrangement, the shape of the hollow pipes can be rotundity, ellipse, rhombus and triangle, etc.; the size of a circle enclosed by the pipes is approximately equal to the size of the cross section of the stringer; meanwhile, cushion materials such as foamed plastics can be filled in the pipes and are used with the pipes so as to obtain the better effect; moreover, the fixing mode of the pipes can be changed from a overlaying welding mode to an integral spiral mode, and the pipes can also be overlaid into the shape of a trapezoid. Due to adopting pipe overlaying energy absorbing and changing line-surface contact to surface-surface contact, the bumper energy absorber greatly improves the disadvantage that the energy absorbing box does not have deformation energy absorbing during low-speed collision; the energy absorbing box absorbs energy in a one-by-one crushing mode, thereby ensuring more stable and evener energy absorbing; and crushing distance is enlarged and more energy is absorbed at the same time. Moreover, the simple bumping-prevention energy absorber not only can be used in front collision, but also can be used in side collision and rear collision.

Description

technical field [0001] The invention relates to an energy absorbing device, in particular to an automobile bumper anti-collision energy absorbing device. Background technique [0002] With the continuous development of the automobile industry and the maturity of the consumer market, people pay more and more attention to the collision safety of automobiles. In the event of a collision, unreasonable deformation will reduce the living space of the passenger compartment and seriously threaten the safety of the occupants. At present, the structure of automobile anti-collision energy-absorbing devices is mainly composed of bumper beams and energy-absorbing boxes. The section of the bumper beam is mostly a simple arc or square section, and the energy-absorbing box is mostly a square box. groove. The energy-absorbing box of the bumper is mostly welded by two sheet metal parts, and most of them have several grooves in the middle. Its disadvantage is that it is not suitable for def...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60R19/34
Inventor 高东洲张亮徐立伟
Owner CHERY AUTOMOBILE CO LTD