Section structure for car side sill

A threshold and cross-section technology, applied in the direction of upper structure, upper structure sub-assembly, vehicle parts, etc., can solve the problems of low strength, increased cost and weight, etc., and achieve the effect of reducing deformation, reducing intrusion, and reducing cost

Inactive Publication Date: 2009-06-03
CHONGQING CHANGAN AUTOMOBILE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the cavity formed by this structure is limited, and the strength is low. It is necessary to increase the internal reinforcement 5 to meet the side impact requirements, which increases the cost and weight

Method used

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  • Section structure for car side sill
  • Section structure for car side sill

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Experimental program
Comparison scheme
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Embodiment Construction

[0010] see figure 1 , the side sill reinforcement 7 of the U-shaped section and the side outer skin 4 are welded to form a part of the side wall welding assembly, and the front sill inner panel 6 of the U-shaped section and the floor 2 are welded to form the lower body welding assembly. part of it. The side wall welding assembly and the lower vehicle body welding assembly form the door sill section cavity by butt-welding the front door sill inner panel 6 of the U-shaped section and the side wall door sill reinforcement 7 of the U-shaped section.

[0011] The width dimension D1 of the upper end of the threshold section cavity is 134 mm, the width dimension D2 of the lower end of the threshold section cavity is 140 mm, and the height dimension H1 of the threshold section section is 110 mm.

[0012] See the table below for the selection of materials for threshold cavity parts:

[0013]

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Abstract

The invention relates to a section structure for a car side sill, which comprises a side sill reinforcing element welded with a side panel outer skin and a side sill internal plate welded with a front footplate. Both the side sill reinforcing element and the side sill internal plate have a U-shaped section, and are butt welded to form the hollow cavity of the side sill. The structure can maximize the hollow cavity size of the section of the side sill, so as to provide larger deformation space. An impact force generated due to collision on the side panel can be absorbed through the deformation of the side sill hollow cavity, transmitted to a crossbeam of the footplate via the side sill hollow cavity structure and then transmitted to different components of a car body, so as to reduce deformation of a passenger compartment and reduce intrusion of local collision, thereby achieving the purpose of protecting passengers.

Description

technical field [0001] The invention belongs to the field of automobile body structures, and in particular relates to a car threshold structure. Background technique [0002] The design of the threshold section of a car directly determines the safety of the side collision of the vehicle. At present, the thresholds and cross-sections of various models are different, and the cost, cross-sectional size, weight, and safety vary greatly. see figure 1 In the past, vehicle models generally used a U-shaped sill reinforcement 3 and an L-shaped front sill inner panel 1 butt joint welding to form a sill cavity to meet the requirements for absorbing energy during side collisions. However, the cavity formed by this structure is limited and the strength is low, and the internal reinforcement 5 needs to be added to meet the requirements of side impact, which increases the cost and weight. Contents of the invention [0003] The structure of the present invention is to provide a car doo...

Claims

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Application Information

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IPC IPC(8): B62D25/00
Inventor 张海清李昌伟姜进京
Owner CHONGQING CHANGAN AUTOMOBILE CO LTD
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