CN101475023B - Rear floor structure of automobile - Google Patents
Rear floor structure of automobile Download PDFInfo
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- CN101475023B CN101475023B CN2008100703478A CN200810070347A CN101475023B CN 101475023 B CN101475023 B CN 101475023B CN 2008100703478 A CN2008100703478 A CN 2008100703478A CN 200810070347 A CN200810070347 A CN 200810070347A CN 101475023 B CN101475023 B CN 101475023B
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- floor
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- flange
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Abstract
The invention provides an automobile back floor structure. A back floor is formed by welding three branch parts comprising a front plate, a middle plate and a back plate. By taking automobile body coordinates as a reference, the separating line of the front plate and the middle plate is in a welding edge position A in the right X direction of a front beam of the back floor and the integral back floor, and the separating line of the middle plate and the back plate is in a welding edge position B in the right X direction of a skeleton beam of the back floor and the integral back floor. The front plate, the middle plate and the front beam of the back floor are connected by a three-layer welding structure, and the middle plate, the back plate and a framework beam of the back floor are also connected by the three-layer welding structure. The back floor improves the manufacturability of the structure, reduces the difficulty of part tooling and products, carries out optimization on welding flanging, and improves the convenience of operation, the feasibility of welding and the reliability of sealing. At the same time, a fuel oil pump maintaining and installing hole is added on the back floor so as to be convenient for the maintenance and the installation of a fuel oil pump.
Description
Technical field
The present invention relates to a kind of body structure, specifically, relate to a kind of rear floor structure of automobile.
Background technology
At present, automobile rear floor is a whole punching parts, see Fig. 1, this structural machinability is relatively poor, the part resilience is bigger, because this part is thin, big, heavy, produces, transports a lot by manual carrying simultaneously, adding again that this part generally is responsible for manufacturing by peripheral supplier is transported to main engine plants again, and then part is out of shape easily.And back floor and left and right side weld all around connect flange that assembly welds mutually towards a direction, and back segment usually occurring can't spot welding, can only adopt carbon-dioxide arc welding, because part is too thin, the phenomenons such as poor sealing of burning easily with gluing take place.Simultaneously, do not design special fuel charger maintenance and assembly opening on the back floor, cause the fuel charger maintenance difficult.
Technical matters to be solved by this invention provides a kind of rear floor structure of automobile, solves floor, back problem such as easy deformation, welding inconvenience in handling process.
For solving the problems of the technologies described above, the technical solution adopted in the present invention is that original back floor as a whole is divided into three parts, and back floor has three piecemeal part welding to constitute by header board, middle plate and back plate; Be as the criterion with the vehicle body coordinate, the welding edge position A of the X positive dirction on the piecemeal line of described header board and middle plate floor after floor front cross rail and integral type, the welding edge position B of the X positive dirction on piecemeal line floor after rear floor frame crossbeam and integral type of plate and back plate in described, header board, middle plate are connected with three layers of welding structure with floor, back front cross rail, and middle plate, back plate also are connected with three layers of welding structure with the rear floor frame crossbeam.
The flange that described back plate and left and right side weld all around connect the assembly overlap joint is divided into two sections rightabout flange, and the leading portion flange is consistent with the flange direction of header board and middle plate, and the back segment flange is opposite with leading portion flange direction.Fuel charger maintenance and installation hole is set on middle plate.
This structure with integral type after the welding edge position of X positive dirction of the floor front cross rail on floor and rear floor frame crossbeam be the piecemeal line, the floor, back rationally is divided into header board, middle plate and three parts of back plate, has reduced mould the requirement capability of manufacturing line, the difficulty of processing and the component production technical risk of large mold; Reasonably the piecemeal position helps reducing welding times and reduces welding cost.Simultaneously; the rear end of back floor and gusset welding assembly (left and right) overlap joint; adopt two-way flange mode; guaranteed the shop characteristic of welding; adopt when protecting weldering at the position of having avoided in the past can't welding; can not be coated with welded seal glue, cause the generation of phenomenons such as leaking out, leak gas, leak, improve the leak tightness of car load.Simultaneously, fuel charger maintenance and mounting hole, maintenance when making things convenient for fault and installation in the floor, back, have been increased on the plate.
Description of drawings
Fig. 1 is the rear floor structure scheme drawing before improving.
Fig. 2 is the structural representation on floor, a kind of back of the present invention.
Floor, front cross rail 2-back, floor, 1-back 3-rear floor frame crossbeam, 4-header board, 5-middle plate 6-plate 7-leading portion flange 8-back segment flange 9-maintenance and installation hole, back
Fig. 3 is a plate welding edge partial enlarged drawing behind the floor, back.
The specific embodiment
As shown in Figure 2, a kind of rear floor structure of the present invention is made up of header board 4, middle plate 5,6 three parts of back plate, referring to Fig. 1, welding edge position A and B with floor after the former integral type 2 and the X positive dirction (being as the criterion with the vehicle body coordinate) of back floor front cross rail 1 and rear floor frame crossbeam 3 are the piecemeal line, and the floor, back rationally is divided into header board 4, middle plate 5 and 6 three parts of back plate.Header board 4, middle plate 5 and floor, back front cross rail 1, plate 5, back plate 6 are connected with three layers of welding structure respectively with rear floor frame crossbeam 3 in reaching.
In conjunction with Fig. 3, the flange that back plate 6 and left and right side weld all around connect the assembly overlap joint is determined the demarcation line of leading portion flange 7 and back segment flange 8 according to industrial analysis, the flange direction of leading portion flange 7 and header board 4 and middle plate 5 is consistent upwards turns over, 8 directions with leading portion flange 7 of back segment flange are opposite, turn over downwards, guarantee the comfort feature of assembly part welding operation.
Simultaneously, according to the position of fuel charger, offer a maintenance mounting hole 9 on middle plate 5, installation site and openings of sizes will suitably be adjusted according to the fuel tank arrangement requirement.This mounting hole will help the installation and the maintenance of fuel charger.
Claims (2)
1. rear floor structure of automobile, there are three piecemeal parts welding formations on floor, described back by header board (4), middle plate (5) and back plate (6); Be as the criterion with the vehicle body coordinate, the welding edge position A of the piecemeal line of described header board (4) and middle plate (5) X positive dirction on floor after floor front cross rail (1) and integral type, the welding edge position B of piecemeal line X positive dirction on floor after rear floor frame crossbeam (3) and integral type of plate (5) and back plate (6) in described, header board (4), middle plate (5) are connected with three layers of welding structure with back floor front cross rail (1), and middle plate (5), back plate (6) also are connected with three layers of welding structure with rear floor frame crossbeam (3); It is characterized in that:
Described back plate (6) is divided into two sections rightabout flange with the flange that the left and right side weld all around connects the assembly overlap joint, and leading portion flange (7) is consistent with the flange direction of header board and middle plate, and back segment flange (8) is opposite with leading portion flange (7) direction.
2. rear floor structure according to claim 1 is characterized in that: fuel charger maintenance and installation hole (9) is set on middle plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100703478A CN101475023B (en) | 2008-09-22 | 2008-09-22 | Rear floor structure of automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100703478A CN101475023B (en) | 2008-09-22 | 2008-09-22 | Rear floor structure of automobile |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101475023A CN101475023A (en) | 2009-07-08 |
| CN101475023B true CN101475023B (en) | 2011-02-09 |
Family
ID=40835821
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008100703478A Active CN101475023B (en) | 2008-09-22 | 2008-09-22 | Rear floor structure of automobile |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101475023B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107487384B (en) * | 2016-07-15 | 2020-08-18 | 宝沃汽车（中国）有限公司 | Rear floor, rear floor structure assembly and automobile |
| CN114313022A (en) * | 2021-10-09 | 2022-04-12 | 浙江零跑科技股份有限公司 | Aluminum extruded section vehicle body structure for new energy automobile |
| CN114275058A (en) * | 2021-11-11 | 2022-04-05 | 浙江零跑科技股份有限公司 | Increase floor assembly structure before journey car |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201283903Y (en) * | 2008-09-22 | 2009-08-05 | 重庆长安汽车股份有限公司 | Block type rear floor structure of automobile |
-
2008
- 2008-09-22 CN CN2008100703478A patent/CN101475023B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201283903Y (en) * | 2008-09-22 | 2009-08-05 | 重庆长安汽车股份有限公司 | Block type rear floor structure of automobile |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101475023A (en) | 2009-07-08 |
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