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Automobile variable-cross-section upper longitudinal beam filled with materials longitudinally in segmented mode and using method and manufacturing method

A technology of filling materials and manufacturing methods, applied in superstructure, vehicle parts, transportation and packaging, etc., can solve problems such as easy bending, low structural strength, failure to get crushed, wrinkled and deformed, and achieve protection, safety and cushioning Good energy absorption effect and reduced deformation effect

Active Publication Date: 2021-04-06
HUNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, most of the current upper longitudinal beams are simply designed as hollow shells formed by stamping. Their structural strength is not high, and they are prone to bending during high-speed collisions. The energy absorption effect is not ideal, and the expected crushing and wrinkles cannot be obtained. The deformation effect cannot guarantee the safety of the occupants in the car well

Method used

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  • Automobile variable-cross-section upper longitudinal beam filled with materials longitudinally in segmented mode and using method and manufacturing method
  • Automobile variable-cross-section upper longitudinal beam filled with materials longitudinally in segmented mode and using method and manufacturing method
  • Automobile variable-cross-section upper longitudinal beam filled with materials longitudinally in segmented mode and using method and manufacturing method

Examples

Experimental program
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Effect test

Embodiment 1

[0043] Figure 1-5 Shown is an automotive variable-section upper side rail with longitudinally segmented filling material, which includes an upper side beam shell 1; a multi-section filling material inside the upper side beam shell 1; and the structural glue 2 between adjacent sections of filling material. The filling material is composed of multi-section energy-absorbing materials 3 and rigid structural materials 4. The energy-absorbing materials 3 are arranged at the front end that is impacted, and the rigid structural materials 4 are arranged at the rear end that needs to be loaded. The continuous segment of energy-absorbing material 3 between the rear ends is adjacent to the rigid structural material 4, and the energy-absorbing material 3 of a single segment between the front end and the rear end is also adjacent to the rigid structural material 4.

[0044] Since the energy-absorbing material 3 is provided at the front end of the upper longitudinal beam shell 1, it can abs...

Embodiment 2

[0054] The present invention also relates to a method for using longitudinally sectioned longitudinal beams with variable cross-section filling materials. When encountering a frontal collision, the energy-absorbing material 3 filled at the front end of the impacted upper longitudinal beam shell 1 fully absorbs the impact Energy, then the rigid structural material 4 of the middle section adjacent to the front end energy-absorbing material 3 maintains the structural strength or rigidity of the upper longitudinal beam, and then the middle section energy-absorbing material 3 of the rigid structural material 4 adjacent to the middle section continues Absorb the remaining collision energy, and finally the rigid structural material 4 at the rear end blocks the remaining collision force.

[0055] Since the frontal collision will lead to crushing, wrinkling and deformation of the upper longitudinal beam, an energy-absorbing material 3 is arranged at the front end of the upper longitudin...

Embodiment 3

[0059] The present invention relates to a method for manufacturing an automobile variable-section upper longitudinal beam of the above-mentioned longitudinal section filling material, which specifically includes the following steps:

[0060] S1: Manufacture upper stringer shell 1;

[0061] S2: Coating structural glue 2 on the inner surface of the upper longitudinal beam shell 1;

[0062] S3: Fill energy-absorbing material 3 and rigid structural material 4 in the upper stringer shell 1, keep the front end of the upper stringer shell 1 filled with energy-absorbing material 3, and fill the rear end of the upper stringer shell 1 with a rigid structure Material 4, the energy-absorbing material 3 of the continuous section between the front end and the rear end needs to be adjacent to the rigid structural material 4 when filling, and the energy-absorbing material 3 of a single segment between the front end and the rear end must also be adjacent to the rigid structural material 4 when...

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Abstract

The invention relates to an automobile variable-cross-section upper longitudinal beam filled with materials longitudinally in a segmented mode and a using method and a manufacturing method, and the automobile variable-cross-section upper longitudinal beam comprises an upper longitudinal beam shell (1); a filler material; the structural adhesive (2) and the filling material are composed of multiple sections of energy absorption materials (3) and rigid structural materials (4). According to the using method, the energy absorbing material at the front end absorbs energy, the rigid structural material at the middle section maintains the structural strength of the upper longitudinal beam, the energy absorbing material at the middle section continues to absorb collision energy, and the rigid structural material at the rear end blocks residual collision force. For the manufacturing method, the manufacturing method specifically comprises the following steps that S1, manufacturing an upper longitudinal beam shell; S2, coating a structural adhesive; and S3, filling the upper longitudinal beam shell with an energy absorption material and a rigid structure material. The upper longitudinal beam is better induced to generate gradual crushing deformation through the internally filled energy absorption and rigid structure materials.

Description

technical field [0001] The invention relates to an automobile variable cross-section upper longitudinal beam filled with materials in longitudinal sections. [0002] The present invention also relates to a method for using the above-mentioned vertically segmented filling material on an automobile variable-section upper longitudinal beam. [0003] The present invention also relates to a method for manufacturing the variable-section upper longitudinal beam of the automobile with the above-mentioned longitudinal section filling material. Background technique [0004] The upper longitudinal beam of a car is an important part of the body structure to absorb the impact of a collision. Its front end is connected to the headlight beam through bolts, and its rear end is connected to the A-pillar of the vehicle body through welding. It is an important load-bearing unit, force-transmitting component and energy-absorbing structure of the car body, and its design has a great influence o...

Claims

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Application Information

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IPC IPC(8): B62D21/15B62D29/00B62D25/00
CPCB62D21/15B62D29/00B62D29/008B62D25/00
Inventor 韩旭雷飞姜潮黄启华
Owner HUNAN UNIV
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