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Energy absorbing device

An energy-absorbing device and energy-absorbing tube technology, which is applied in the field of safety, can solve problems such as large fluctuations in impact resistance, deformation of longitudinal beams and car bodies, and collapse in ideal conditions, and achieve stable energy absorption, stable energy absorption, and stable performance. Effect

Inactive Publication Date: 2012-12-19
林楠 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

According to the design structure, the existing energy-absorbing boxes mainly include the square tube structure of the prefabricated collapse source, the bellows structure, and the cylindrical liquid-gas compression energy-absorbing buffer structure, etc. Collapse, which seriously affects the energy absorption effect, and the resulting impact resistance fluctuates greatly, it is difficult to achieve stable energy absorption, which seriously affects its energy absorption efficiency and impact reduction effect, thus easily causing deformation of the longitudinal beam and the vehicle body

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Embodiment 1: as figure 1 As shown, take an energy-absorbing tube 2 with uniform wall thickness and good plasticity, the cross-sectional shape of the energy-absorbing tube 2 can be circular or polygonal, and the inner wall surface of the energy-absorbing tube 2 is coated with lubricant, so The above-mentioned lubricant can be selected from a dry film lubricant, etc., to ensure that the energy-absorbing tube 2 does not stick to the expansion rod 1 when it expands, and the friction force is stable, thereby ensuring stable expansion resistance.

[0023] One end of the energy-absorbing tube 2 is punched out of a horn-shaped opening with a groove, and the flange is flanged or welded, and a longer expansion rod 1 is inserted from the end of the horn-shaped opening, and a part of the expansion rod 1 is inserted into the suction Inside the energy tube 2, the other part is exposed outside the energy-absorbing tube 2. A convex portion 3 is provided on the outer wall of the expans...

Embodiment 2

[0025] Embodiment 2: Compared with Embodiment 1, the difference is that the energy-absorbing tube 2 is obtained by welding one end of a thick seamless steel pipe and one end of a thin seamless steel pipe, and the expansion rod 1 with the convex part 3 is obtained from One end of the thick seamless steel pipe is inserted, and the outer diameter of the convex part 3 of the expanding rod 1 is smaller than the inner diameter of the thick seamless steel pipe and larger than the inner diameter of the thin seamless steel pipe, so the expanding rod 1 passes through the convex part 3 after being inserted into the thick seamless steel pipe Clamped on one end of the thin seamless steel pipe, the second embodiment of the device is obtained.

Embodiment 3

[0026] Embodiment 3: Compared with Embodiment 1, the difference is that, as figure 2 As shown, the energy-absorbing pipe 2 is two identical steel pipes with a rectangular cross-section, one end of one steel pipe is welded to one end of the other steel pipe, and the two steel pipes are vertically arranged, that is, form a "cross" from a top view shape. The expansion rod 1 is inserted from one end of a steel pipe at the cross-shaped intersection area, and the expansion rod 1 has a radially outwardly extending convex portion 3, and another steel pipe is clamped by the convex portion 3 to obtain the present invention. The third implementation.

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Abstract

The invention relates to an energy absorbing device which comprises an expansion rod and an energy absorbing tube. The expansion rod is disposed in the energy absorbing tube, the hardness of a protrusion arranged on the outer side wall of the expansion rod is higher than that of the energy absorbing tube, the outer diameter of the protrusion of the expansion rod is larger than the inner diameter of the energy absorbing tube, and the expansion rod is clamped on the inner side wall of the energy absorbing tube through the protrusion. During use of the energy absorbing device having the structure, the expansion rod applies acting force to the energy absorbing tube through the protrusion in case of collision, and impact resistance is generated by plastic deformation of the energy absorbing tube, so that stability in energy absorption is realized. The energy absorbing device is simple in structure, stable in performance, high in energy absorbing efficiency and not easy to lose effectiveness. In addition, lubricant can be coated on the surface of the inner side wall of the energy absorbing tube to guarantee acting effects of the expansion rod and the energy absorbing tube.

Description

technical field [0001] The invention relates to the safety field, in particular to a buffer energy-absorbing device. Background technique [0002] Most of the existing energy-absorbing buffer devices rely on the collapse and deformation of foam materials, honeycomb materials, thin plate structures, bellows structures, prefabricated collapse source square tube structures, or the compression of gases and liquids to achieve energy absorption. It is not stable, has large fluctuations, and it is difficult to ensure that it collapses according to the design state, so it cannot provide stable and reliable protection performance. For example, in automobiles, the absorption of collision impact energy is mainly absorbed by energy-absorbing buffer bumpers, anti-collision beams, energy-absorbing boxes, energy-absorbing buffer longitudinal beams and car bodies, among which the energy-absorbing boxes are connected between the anti-collision beams and longitudinal beams. , when a serious ...

Claims

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Application Information

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IPC IPC(8): B60R19/34B62D21/15
Inventor 林楠高敏林建军
Owner 林楠
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