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Inner side body plate for vehicle

A technology for side wall inner panel and vehicle, which is applied in the direction of vehicle components, upper structure, and upper structure sub-assembly, etc., can solve problems such as poor toughness and cracking, and achieve the effect of increasing toughness.

Active Publication Date: 2015-04-15
WUXI LANGXIAN LIGHTWEIGHT TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the existing technology, the thermoforming material itself has a lot of strength, but its toughness is poor, and if it reaches the material limit after a collision, it will crack

Method used

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  • Inner side body plate for vehicle
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Embodiment Construction

[0009] The present invention will be further described below in conjunction with specific drawings.

[0010] Such as Figure 1 ~ Figure 2 As shown: the side wall inner panel of the vehicle includes a side wall inner panel body 1, a B-pillar body 2, an A-pillar body 3, a flange surface 4, and the like.

[0011] Such as figure 1 As shown, the present invention includes a side wall inner panel body 1, the side wall inner panel body 1 is a ring structure, one side of the ring structure is the B-pillar body 2, and the upper side of the ring structure is the A-pillar body 3; The main part of the inner plate body 1 is obtained by hot forming of ultra-high strength steel, and has a martensitic structure with a strength of 1300-1500 MPa; figure 2 As shown, the upper surface of the A-pillar body 3 is a flange surface 4 overlapping with the top cover. The flange surface 4 is obtained by slow cooling in the ultra-high-strength steel hot forming process and has a strength of 500- 700MP...

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PUM

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Abstract

The invention relates to an inner side body plate for a vehicle. The inner side body plate for the vehicle comprises an inner side body plate body, the inner side body plate body is annular, one side of the annular structure is a B pillar body, and the upper side of the annular structure is an A pillar body; the inner side body plate for the vehicle is characterized in that the body part of the inner side body plate body is obtained through a hot forming technology for ultra high-strength steel, and the body part has a martensitic structure of which the intensity is 1300 to 1500 MPa; the upper surface of the A pillar body is a flange surface lapped with a top cover, the flange surface has a ferrite and pearlitic structure or bainite structure obtained through slow cooling in the hot forming technology for the ultra high-strength steel, and the intensity of the ferrite and pearlitic structure or bainite structure is 500 to 700 MPa. According to the inner side body plate for the vehicle, the flange surface lapped with the top cover is changed into a soft region, the intensity is less than 800 MPa, and the toughness can be increased to play a role of absorbing one part of energy.

Description

technical field [0001] The invention relates to a side wall inner panel for a vehicle, belonging to the technical field of vehicle components. Background technique [0002] Automobile side panel is the key part of automobile body manufacturing, its manufacturing quality directly affects the appearance and performance of the automobile. The inner panel of the side wall is generally a ring structure, and one side of the ring structure is the B-pillar. The main function of the B-pillar is to provide protection in the event of a side collision. Possibly protects passengers, mainly for energy absorption. But at the same time, the side wall inner panel itself needs to ensure a certain strength. [0003] In the prior art, the thermoforming material itself has a lot of strength, but its toughness is poor, and if it reaches the material limit after a collision, it will crack. Contents of the invention [0004] The purpose of the present invention is to overcome the deficiencies ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B62D25/02B62D25/04
CPCB62D25/02B62D25/04
Inventor 孙财陈扬李向荣杨云龙
Owner WUXI LANGXIAN LIGHTWEIGHT TECH CO LTD