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Rear bumper with EPP buffer block

A buffer block and bumper technology, which is applied in the field of bumpers, can solve problems such as poor bumper anti-collision buffering effects, and achieve the effect of avoiding serial car accidents and improving safety

Pending Publication Date: 2021-11-02
深圳市攀登时代新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In the above-mentioned patents, although the assembly between the bumper and the buffer block can be made more compact, it still does not solve the problem of poor anti-collision buffering effect of the bumper in the prior art;

Method used

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  • Rear bumper with EPP buffer block
  • Rear bumper with EPP buffer block
  • Rear bumper with EPP buffer block

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] see figure 1 , figure 2 , Figure 4 with Figure 5 , the rear bumper with EPP buffer block, including a U-shaped reinforcing beam 1, the left and right ends of the U-shaped reinforcing beam 1 top are fixed with positioning plates 3, and the tops of the two positioning plates 3 pass through The crushing beam 4 is fixedly connected with the rear end of the car body, and when the vehicle has a very serious collision, the crushing of the crushing beam 4 can buffer part of the impact force;

[0046] The bottom of the reinforcement beam 1 is fixedly connected with a buffer interlayer 5 through a buffer block 13, and the rear cover 2 of an arched shape is movable below the buffer interlayer 5. In the present embodiment, the buffer block 13 is made of EPP material, and EPP (foaming poly Acrylic) material has the advantages of light specific gravity, good elasticity, shock resistance and compression resistance, high deformation recovery rate, good absorption performance, oil...

Embodiment 2

[0053] see image 3 with Image 6 , on the basis of Embodiment 1, the buffer column 10 includes a hollow cylinder 101 and a buffer sleeve 102 wrapped on the outer wall of the hollow cylinder 101. The buffer sleeve 102 is made of EPP material and is glued to the first arc groove 8 and the second arc groove. On the inner wall of the shaped groove 9, the interior of the hollow cylinder 101 stores colored gas, and the outer wall of the buffer sleeve 102 is evenly provided with vent holes;

[0054] When the vehicle is rear-end collided, the rear cover 2 moves toward the reinforcement beam 1 under the impact force of the rear vehicle, and when the rear cover 2 moves toward the reinforcement beam 1, the first arc-shaped groove 8 and the second arc-shaped groove The positions of 9 are mutually staggered, and at this time, the buffer column 10 bonded on the inner wall of the first arc-shaped groove 8 and the second arc-shaped groove 9 will be extruded and deformed from the first arc-s...

Embodiment 3

[0059] see Figure 7-Figure 10 On the basis of Embodiment 1 and Embodiment 2, storage tanks 16 are evenly arranged on the top of the reinforcement beam 1, fragile glass slides 17 are arranged on the top of the storage tank 16, and pistons 18 are movably arranged on the inner wall of the storage tank 16, A flame retardant is filled between the piston 18 and the fragile glass 17. In this embodiment, the flame retardant can be either nitrogen or carbon dioxide, which can reduce the oxygen concentration around the vehicle and also lower the temperature around the vehicle. ;

[0060] The bottom of the piston 18 is fixedly installed with a push rod 19, and the bottom end of the push rod 19 passes through the storage tank 16, the reinforcing beam 1 and the buffer interlayer 5 and is fixedly connected with a connecting plate 20, which is detachably and fixedly installed on the rear cover on the outer wall of 2;

[0061] When the vehicle is collided by a rear-end collision, the rear ...

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Abstract

The invention relates to the technical field of bumpers, and discloses a rear bumper with an EPP buffer block, which comprises a U-shaped reinforcing beam, positioning plates are fixedly mounted at the left end and the right end of the top of the U-shaped reinforcing beam, and the tops of the two positioning plates are fixedly connected with the tail end of a vehicle body through crumple beams. The bottom of the reinforcing beam is fixedly connected with a buffer interlayer through a buffer block, and an arch-shaped rear housing is movably arranged below the buffer interlayer. When a vehicle is collided due to rear-end collision, the rear cover shell and the buffering interlayer can move towards the reinforcing beam under the action of the collision force of a rear vehicle, the buffering interlayer can compress the EPP buffering block when moving towards the reinforcing beam, buffering and energy absorption can be effectively conducted through the EPP buffering block, and the situation that the collision force directly damages a vehicle body and threatens the life safety of people in the vehicle is prevented. The anti-collision buffering device has the advantages of being novel in design, simple in structure and good in anti-collision buffering effect.

Description

technical field [0001] The invention relates to the technical field of bumpers, in particular to a rear bumper with an EPP buffer block. Background technique [0002] In recent years, with the rapid development of the automobile industry and the continuous increase of car ownership, people's demand for car safety performance is also increasing; when a car collides, the bumper, as the first auto part that comes into contact with the collision object, bears In addition to the function of cushioning and energy absorption, it is the first protection of the car; when the car is rear-ended, how to reduce the damage to the rear people and the damage to the rear of the car has always been a proposition that car designers pay attention to. The existing anti-collision structure at the rear of a car generally consists of a rear bumper, a buffer block and an anti-collision beam. The rear bumper is installed at the rear end of a passenger car. Fill the buffer block between them; althoug...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60R19/18B60R19/34
CPCB60R19/18B60R19/34B60R2019/1806B60R2019/186
Inventor 张烨美颜颖莹李金忠李睿忠李飞忠李盛玲李春玲
Owner 深圳市攀登时代新材料有限公司
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