Lap joint structure of multi-layer boards of car body

A multi-layer board and joint structure technology, which is applied to the upper structure, the connection between the upper structure sub-assemblies, vehicle components, etc., can solve the problems of high manufacturing cost, weak welding, and insufficient welding strength, and improve driving comfort Performance and customer satisfaction, reduce the probability of failure, improve the effect of manufacturing accuracy

Active Publication Date: 2017-10-20
CHERY AUTOMOBILE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to propose a new type of lap joint structure of multi-layer boards of the car body to solve defects such as virtual welding, weak welding or spatter caused by the local material thickness of the traditional multi-layer board lap joint structure of the car body, and the manufacturing problems brought about High cost, insufficient welding strength, loose structure, etc.

Method used

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  • Lap joint structure of multi-layer boards of car body
  • Lap joint structure of multi-layer boards of car body
  • Lap joint structure of multi-layer boards of car body

Examples

Experimental program
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Embodiment 1

[0018] Such as figure 2 As shown, the overlapping structure of the four-layer panels of the vehicle body in this embodiment includes a first laminate 1, a second laminate 2, a third laminate 3 and a fourth laminate 4, wherein the first laminate 1, the second laminate The board 2 and the third layer board 3 are stacked and welded in sequence to form the welding assembly of the initial product; the third layer board 3 is evenly distributed with several gaps 5 penetrating the third layer board 3, and the fourth layer board 4 A protruding part 6 is provided at a position corresponding to the notch 5, and the cross section of the notch 5 conforms to the cross-sectional shape of the protruding part 6; the protruding part 6 of the fourth layer plate 4 is inserted into the notch 5 of the third layer plate 3; The four-layer board 4 is only welded and fixed with the second layer board 2 in the welding assembly of the preliminary product at the convex portion 6 to form an overlapping st...

Embodiment 2

[0021] Such as image 3 As shown, the overlapping structure of the vehicle body without laminates in this embodiment includes a first laminate 1, a second laminate 2, a third laminate 3, a fourth laminate 4 and a fifth laminate 5, wherein the first laminate The plate 1, the second layer plate 2, and the third layer plate 3 are stacked and welded in sequence to form a welding assembly of the initial product; the third layer plate 3 and the fourth layer plate 4 are evenly distributed with several through gaps 6, so The fifth layer plate 5 is provided with a convex portion 7 at a position corresponding to the notch 6, and the cross section of the notch 6 is consistent with the cross-sectional shape of the convex portion 7; the convex portion 7 of the fifth layer plate 5 is inserted into the third layer plate 3 , In the gap 6 of the fourth laminate 4, the fifth laminate 5 is only welded and fixed with the second laminate 2 in the welding assembly of the preliminary product at the ...

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Abstract

The purpose of the present invention is to propose a new type of lap joint structure of multi-layer boards of the car body to solve defects such as virtual welding, weak welding or spatter caused by the local material thickness of the traditional multi-layer board lap joint structure of the car body, and the manufacturing problems brought about High cost, insufficient welding strength, loose structure and other problems. The overlapping structure of the multilayer panels of the vehicle body of the present invention includes the first layer, the second layer, ..., the (N-1)th layer and the Nth layer, the said N is greater than or equal to 4, the key lies in the said first layer The first layer, the second layer, and the third layer are stacked in sequence and welded and fixed to form the welding assembly of the initial product; the third layer, ..., the (N‑1)th layer are stacked in sequence, and Several through gaps are set at the same position; the Nth layer board is provided with a convex part at the position corresponding to the gap, and the convex part of the Nth layer board is inserted into the gap, and the Nth layer board and the initial The finished welding assembly is welded and fixed to form an overlapping structure of multi-layer panels of the car body.

Description

technical field [0001] The invention belongs to the technical field of automobile body structures, and in particular relates to an overlapping structure of multilayer boards of an automobile body. Background technique [0002] At present, the car body frame mostly adopts spot welding and CO 2 The welding method laps steel plates with different thicknesses from 0.7mm to 2.5mm, and through a large number of spot welding and a small amount of CO 2 Welding to form the body skeleton structure assembly of the passenger car (that is, the body-in-white removes the assembly parts to become the skeleton assembly). In the process of forming the skeleton of parts, there are a large number of overlapping structures of multi-layer boards (three-layer boards and more boards), resulting in a local material thickness exceeding 6mm. During the spot welding process, welding such as virtual welding and spatter are prone to occur defect. There are also some OEMs in China that use intermediate...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B62D27/02
Inventor 席艳秋刘冶钢李永杰胡建新豆忠颖马保林覃玩朝丁亭张立
Owner CHERY AUTOMOBILE CO LTD
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