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Regular polygonal constant-cross-section anti-bumping structure applied to composite material vehicle threshold

A regular polygon, composite material technology, applied in the superstructure, superstructure sub-assemblies, vehicle components, etc., can solve the problem of inapplicable composite material automobile thresholds, etc., to avoid the risk of galvanic corrosion, simple and convenient operation, and reduce intrusion amount of effect

Active Publication Date: 2019-03-08
CHINA FIRST AUTOMOBILE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Taking composite car side panels and their associated composite car sills as an example, the original method of connecting segmented metal sill reinforcement plates by welding inside the metal car sill, due to the strength of parts, connection process and galvanic corrosion, etc. Reasons no longer apply to composite car sills

Method used

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  • Regular polygonal constant-cross-section anti-bumping structure applied to composite material vehicle threshold
  • Regular polygonal constant-cross-section anti-bumping structure applied to composite material vehicle threshold
  • Regular polygonal constant-cross-section anti-bumping structure applied to composite material vehicle threshold

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Effect test

Embodiment 1

[0031] figure 1 It is a schematic diagram of the assembly of the regular polygonal constant cross-section anti-collision structure 100 and the composite material automobile door sill in the embodiment of the present invention. Such as figure 1 As shown, in this embodiment, the outer contour surface of the right side of the regular polygonal anti-collision structure 100 is attached to the inner cavity surface of the composite automobile door sill inner panel 200, and the two are bonded and fixed by a flexible structural glue; The outer contour surface of the left side of the cross-section anti-collision structure 100 is coated with tough structural glue, and it is glued and fixed with the inner cavity surface of the composite material automobile door sill outer panel; A bonding gap of 0 to 1 mm is provided between the surfaces of the inner cavity to serve as the coating space for the above-mentioned tough structural adhesive. The selected tough structural adhesive can not only e...

Embodiment 2

[0042] In this embodiment, in the regular polygonal uniform cross-section fiber-reinforced structure body 110 in the regular polygonal uniform cross-section anti-collision structure 100, an annular three-dimensional fiber weaving machine is used to prepare the multi-dimensional fiber-reinforced preform in the regular polygonal uniform cross-section fiber reinforced structure body 110. The fiber weaving direction of the multi-dimensional fiber-reinforced preform is customized according to the required stress conditions, and then the multi-dimensional fiber-reinforced preform is cured with epoxy resin to form a regular polygon under the traction device through the pultrusion process equipment The structural body 110 is reinforced with a uniform cross section fiber. Compared with the regular polygonal uniform cross-section fiber-reinforced structure body 110 formed by carbon fibers laid along the length of the regular polygonal uniform cross-section collision avoidance structure in...

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Abstract

The invention relates to a regular polygonal constant-cross-section anti-bumping structure applied to a composite material vehicle threshold. The structure is characterized by comprising a body and anouter surface anti-impacting layer, the outer side contour cross section of a regular polygonal constant-cross-section fiber reinforced structure is in proportion to the inner side cross section of avehicle threshold cavity, a bonding clearance with the width of 0-1 mm is reserved between the outer side contour cross section of the regular polygonal constant-cross-section fiber reinforced structure and the inner side cross section of the vehicle threshold cavity, toughness structural adhesive fills the bonding clearance, the bonding thickness is 1 mm, a fiber reinforced tape winds the outerside of the regular polygonal constant-cross-section fiber reinforced structure body, the outer surface anti-impacting layer winds the outer side of the regular polygonal constant-cross-section fiberreinforced structure in two directions of +45 degrees and -45 degrees, the winding layer number is 1-3, an energy absorbing filler is arranged in the body, and foam profiles with high energy-absorbingratio or self-foaming hardening foams which are injected into the cavity are adopted by the energy-absorbing filler. The regular polygonal constant-cross-section anti-bumping structure has the advantages that positioning is conducted through the outer profile face of the regular polygonal constant-cross-section anti-bumping structure and the interior of the vehicle threshold, bonding and fixing are conducted by adopting a toughness structural adhesive, welding fixture designing is reduced, and the operation is simple and convenient.

Description

Technical field [0001] The invention relates to a regular polygonal anti-collision structure applied to a composite material automobile door sill, which adopts a continuous fiber reinforced composite material and belongs to the technical field of automobile anti-collision protection devices. Background technique [0002] With the development of automobile technology, the requirements for passive safety of automobiles have gradually become quite high. As one of the C-NCAP mandatory standard evaluations, the side collision of a deformable mobile barrier with a speed of 50km / h and a vehicle is precisely the test and consideration of the sill structure and strength in the passive safety of the car. The anti-collision structure inside the car’s door sill directly It is related to whether the threshold of the car can absorb and disperse enough collision energy in the event of a collision, reduce the intrusion of the threshold, reduce the damage to the drivers and passengers, and protec...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B62D29/04B62D25/20
CPCB62D25/20B62D29/043
Inventor 李晔杨兆国周宇飞江梅方程范喜龙
Owner CHINA FIRST AUTOMOBILE
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