CN103895716A - Reinforcing support of automobile rear floor - Google Patents

Reinforcing support of automobile rear floor Download PDF

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Publication number
CN103895716A
CN103895716A CN201210577547.9A CN201210577547A CN103895716A CN 103895716 A CN103895716 A CN 103895716A CN 201210577547 A CN201210577547 A CN 201210577547A CN 103895716 A CN103895716 A CN 103895716A
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CN
China
Prior art keywords
rear wheel
wheel cover
floor
reinforcing support
rear floor
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN201210577547.9A
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Chinese (zh)
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CN103895716B (en
Inventor
赵明
梅艳芬
吴东琴
谢祖玉
戴振华
常满红
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Chongqing Changan Automobile Co Ltd
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Chongqing Changan Automobile Co Ltd
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Application filed by Chongqing Changan Automobile Co Ltd filed Critical Chongqing Changan Automobile Co Ltd
Priority to CN201210577547.9A priority Critical patent/CN103895716B/en
Publication of CN103895716A publication Critical patent/CN103895716A/en
Application granted granted Critical
Publication of CN103895716B publication Critical patent/CN103895716B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The invention discloses a reinforcing support of an automobile rear floor. The cross section of the reinforcing support of the rear floor is in a U shape, and the reinforcing support is a groove type support. The upper end of the reinforcing support is used for being welded with rear wheel hood reinforcing pieces and rear wheel hood supporting pieces, the lower end of the reinforcing support is provided with a first welding flanging used for being welded with the rear floor, and second welding flangings used for being welded with rear wheel hoods and a rear longitudinal beam are arranged at the top ends of the two side walls of the reinforcing support. The reinforcing support of the rear floor effectively reduces deformation of overlap edges of the rear wheel hoods and the rear longitudinal beam, improves the fatigue resistance of the rear wheel hoods, and prevents the rear wheel hoods from being prone to cracks.

Description

A kind of automobile rear floor reinforced support
Technical field
The present invention relates to the parts of automobile, relate in particular a kind of automobile rear floor reinforced support.
Background technology
The connection structure of existing automobile rear floor and its Surrounding Parts as shown in Figure 4, comprise rear floor 2, rear wheel cover 3, floor side member 4, rear wheel cover reinforcement 5, rear wheel cover strut member 6 and shelf 7, described floor side member 4 is positioned at the below on rear floor 2, weld with lower surface and the flanging side face on rear floor 2 respectively, described rear wheel cover 3 is positioned at the outside on rear floor 2, its lower end and floor side member 4 weld, its upper end is welded with rear wheel cover reinforcement 5, described shelf 7 welds with rear wheel cover reinforcement 5, between the lower surface of shelf 7 and rear wheel cover 3 inside faces, be welded with rear wheel cover strut member 6.
In the time that rear wheel cover is born the power F that car chassis passes over, power F upwards transmits power f1 to body top section and opposite side by rear wheel cover reinforcement 5, rear wheel cover strut member 6, shelf 7, power f2 is transmitted to floor side member 4 lateral surfaces by rear wheel cover 3 in path downwards, and additional bending moment M makes the landing edge of rear wheel cover 3 lower ends and floor side member 4 yielding; The action effect of sharing power due to f2 is bad, and f1 causes more greatly additional bending moment M larger, under the reverse load effect of chassis, rear wheel cover endurance failure easily occurs, and produces vehicle body crackle, affects vehicle body service life.
Summary of the invention
The object of this invention is to provide a kind of automobile rear floor reinforced support, to reduce the stress of rear wheel cover lower end and floor side member lap-joint, improve the fatigue resistance of rear wheel cover.
Automobile rear floor reinforced support of the present invention, this rear floor reinforced support is that cross-sectional plane is U-shaped Troffer, its upper end is for welding with rear wheel cover reinforcement, rear wheel cover strut member, its lower end is provided with for welding flange with first of rear floor welded, and the top of its two side is provided with for welding flange with second of rear wheel cover and floor side member welding.
Automobile rear floor reinforced support of the present invention, weld with rear wheel cover reinforcement, rear wheel cover strut member respectively its upper end, its lower end and rear floor welded, the top of its two side and rear wheel cover welding.Rear wheel cover reinforcement and rear wheel cover strut member are by the upper end closed of rear floor reinforced support, the lower end closed of Jiang Hou floor, rear floor reinforced support, rear wheel cover is by the top closure of its two side, make rear floor reinforced support and its Surrounding Parts weld closed cavity body structure of rear formation, just structure stiffness is higher, and is conducive to absorb energy.In the time that rear wheel cover is born the power that car chassis passes over, rear floor reinforced support can be by a part of force transmission to shelf, rear floor and floor side member, reduce the moment of flexure of the lap-joint of rear wheel cover lower end and floor side member, effectively reduced the deflection of the landing edge of rear wheel cover and floor side member, improve the fatigue resistance of rear wheel cover, avoided rear wheel cover easily to crack.
Brief description of the drawings
Fig. 1 is axonometric drawing of the present invention;
Fig. 2 is the structural representation of the present invention and its Surrounding Parts;
Fig. 3 is the section-drawing along AA line in Fig. 2;
Fig. 4 is the structural representation of existing automobile rear floor and its Surrounding Parts.
Detailed description of the invention
In order further to explain technical scheme of the present invention, below by coming by reference to the accompanying drawings, the present invention will be described in detail.
As shown in Figure 1, this automobile rear floor reinforced support 1 is U-shaped Troffer for cross-sectional plane, its upper end is for welding with rear wheel cover reinforcement 5 and rear wheel cover strut member 6, its lower end be provided with for rear floor 2 weld first welding flange 12, the top of its two side be provided with for rear wheel cover 3 and floor side member 4 weld second welding flange 8.
The annexation of this automobile rear floor reinforced support and its Surrounding Parts as shown in Figures 2 and 3, protect by the first via hole 10 and rear wheel cover reinforcement 5 and solderedly connect, the upper end of rear floor reinforced support 1 another sidewall and diapire is protected soldered connecing by the second via hole 11 with rear wheel cover strut member 6 by the upper end of rear floor reinforced support 1 one sidewalls.Weld with rear floor 2 by the first welding flange 12 lower end of rear floor reinforced support 1, and weld with rear wheel cover 3 by the second welding flange 8 on the top of its two side.Rear wheel cover reinforcement 5 and rear wheel cover strut member 6 are by the upper end closed of rear floor reinforced support 1, rear floor 2 is by the lower end closed of rear floor reinforced support 1, rear wheel cover 2, by the top closure of its two side, makes rear floor reinforced support 1 and its Surrounding Parts weld closed cavity body structure of rear formation.
In the time that rear wheel cover 3 is born the power F that car chassis passes over, because the upper end of rear floor reinforced support 1 and rear wheel cover reinforcement 5 and rear wheel cover strut member 6 weld, form the upwards path of power transmission f3.Soldering turret electrode 13 passes from the 3rd via hole 9, and rear floor 2 is connected by spot welding 14 with rear wheel cover 3 lower ends, forms the path of downward power transmission f4.The sidewall of rear floor reinforced support 1 is connected with rear wheel cover 3 by the second flange, and the lower end of the second flange and floor side member 4 weld, and the lower end of rear floor reinforced support 1 is connected with rear floor 2 by spot welding, forms the path of downward power transmission f5.Chassis Input Forces F is shared by f3, f4, f5, with respect to existing structure, due to newly-increased f5 power transmission, make f4 be less than f2, f3 is less than f1, thereby additional bending moment M is reduced, reduce the stress that bear at the landing edge place of rear wheel cover 3 roots and floor side member 4, effectively reduce the deflection of the landing edge of rear wheel cover 3 and floor side member 4.

Claims (1)

1. an automobile rear floor reinforced support, it is characterized in that: this rear floor reinforced support (1) is U-shaped Troffer for cross-sectional plane, its upper end is for welding with rear wheel cover reinforcement (5) and rear wheel cover strut member (6), its lower end is provided with for welding flange (12) with first of rear floor (2) welding, and the top of its two side is provided with for welding flange (8) with second of rear wheel cover (3) and floor side member (4) welding.
CN201210577547.9A 2012-12-27 2012-12-27 A kind of automobile rear floor reinforced support Active CN103895716B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201210577547.9A CN103895716B (en) 2012-12-27 2012-12-27 A kind of automobile rear floor reinforced support

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201210577547.9A CN103895716B (en) 2012-12-27 2012-12-27 A kind of automobile rear floor reinforced support

Publications (2)

Publication Number Publication Date
CN103895716A true CN103895716A (en) 2014-07-02
CN103895716B CN103895716B (en) 2016-04-27

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Family Applications (1)

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CN201210577547.9A Active CN103895716B (en) 2012-12-27 2012-12-27 A kind of automobile rear floor reinforced support

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105022887A (en) * 2015-07-27 2015-11-04 北京汽车股份有限公司 Evaluation method and apparatus for reinforcing bracket of automobile
WO2018188216A1 (en) * 2017-04-10 2018-10-18 上海蔚来汽车有限公司 Connection member for vehicle frame, vehicle frame assembly, and electric vehicle
CN109398502A (en) * 2018-12-07 2019-03-01 上汽通用五菱汽车股份有限公司 A kind of reinforcement structure of inner plate of automobile rear wheel cover and rear floor

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20050039219A (en) * 2003-10-24 2005-04-29 기아자동차주식회사 Reinforcement structure of rear side member for vehicle
JP2008013103A (en) * 2006-07-07 2008-01-24 Toyota Motor Corp Vehicle body floor structure
CN201882161U (en) * 2010-11-16 2011-06-29 浙江吉利汽车研究院有限公司 Rear floor reinforcing structure of vehicle
CN202243713U (en) * 2011-09-22 2012-05-30 吉林金洪汽车部件有限公司 Support for automobile rear floor
CN102530101A (en) * 2012-02-24 2012-07-04 重庆长安汽车股份有限公司 Stiffening-beam reinforcement assembly for automobile rear-floors

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20050039219A (en) * 2003-10-24 2005-04-29 기아자동차주식회사 Reinforcement structure of rear side member for vehicle
JP2008013103A (en) * 2006-07-07 2008-01-24 Toyota Motor Corp Vehicle body floor structure
CN201882161U (en) * 2010-11-16 2011-06-29 浙江吉利汽车研究院有限公司 Rear floor reinforcing structure of vehicle
CN202243713U (en) * 2011-09-22 2012-05-30 吉林金洪汽车部件有限公司 Support for automobile rear floor
CN102530101A (en) * 2012-02-24 2012-07-04 重庆长安汽车股份有限公司 Stiffening-beam reinforcement assembly for automobile rear-floors

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105022887A (en) * 2015-07-27 2015-11-04 北京汽车股份有限公司 Evaluation method and apparatus for reinforcing bracket of automobile
CN105022887B (en) * 2015-07-27 2018-06-19 北京汽车股份有限公司 Automobile reinforced support evaluation method and device
WO2018188216A1 (en) * 2017-04-10 2018-10-18 上海蔚来汽车有限公司 Connection member for vehicle frame, vehicle frame assembly, and electric vehicle
CN109398502A (en) * 2018-12-07 2019-03-01 上汽通用五菱汽车股份有限公司 A kind of reinforcement structure of inner plate of automobile rear wheel cover and rear floor

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CN103895716B (en) 2016-04-27

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