CN115123400A - Split type modular rear floor assembly and assembling method thereof - Google Patents
Split type modular rear floor assembly and assembling method thereof Download PDFInfo
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- CN115123400A CN115123400A CN202210785209.8A CN202210785209A CN115123400A CN 115123400 A CN115123400 A CN 115123400A CN 202210785209 A CN202210785209 A CN 202210785209A CN 115123400 A CN115123400 A CN 115123400A
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- 238000000034 method Methods 0.000 title claims description 22
- 238000005266 casting Methods 0.000 claims abstract description 132
- 239000006096 absorbing agent Substances 0.000 claims abstract description 22
- 230000035939 shock Effects 0.000 claims abstract description 21
- 238000009434 installation Methods 0.000 claims abstract description 18
- 238000003466 welding Methods 0.000 claims description 25
- 230000008569 process Effects 0.000 claims description 12
- 239000000725 suspension Substances 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 6
- 238000009826 distribution Methods 0.000 claims description 3
- 238000013461 design Methods 0.000 abstract description 11
- 238000004519 manufacturing process Methods 0.000 description 11
- 238000004512 die casting Methods 0.000 description 6
- 210000003205 muscle Anatomy 0.000 description 6
- 238000012423 maintenance Methods 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 238000011161 development Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 239000013585 weight reducing agent Substances 0.000 description 1
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D25/00—Superstructure or monocoque structure sub-units; Parts or details thereof not otherwise provided for
- B62D25/20—Floors or bottom sub-units
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D25/00—Superstructure or monocoque structure sub-units; Parts or details thereof not otherwise provided for
- B62D25/20—Floors or bottom sub-units
- B62D25/2009—Floors or bottom sub-units in connection with other superstructure subunits
- B62D25/2027—Floors or bottom sub-units in connection with other superstructure subunits the subunits being rear structures
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D27/00—Connections between superstructure or understructure sub-units
- B62D27/02—Connections between superstructure or understructure sub-units rigid
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D27/00—Connections between superstructure or understructure sub-units
- B62D27/02—Connections between superstructure or understructure sub-units rigid
- B62D27/023—Assembly of structural joints
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Body Structure For Vehicles (AREA)
Abstract
The invention discloses a split type modularized rear floor assembly, wherein the rear edge of a front casting of a rear floor front casting is fixedly connected with the front edge of a middle casting of a rear floor middle casting, the rear edge of the middle casting of the rear floor middle casting is fixedly connected with the front edge of the rear casting of the rear floor rear casting, the right edge of the middle casting of the rear floor middle casting is fixedly connected with the lower edge of the inner side of a right rear wheel cover, the position of a fixed connection point is correspondingly adjusted according to the model and the installation position of a shock absorber, the left edge of the middle casting of the rear floor middle casting is fixedly connected with the lower edge of the inner side of a left rear wheel cover of the left rear wheel cover, and the position of the fixed connection point is correspondingly adjusted according to the model and the installation position of the shock absorber. The invention can take the advantages of the integrated floor assembly and the welded floor assembly into consideration, and can effectively realize the modular design of arrangement and corresponding performance.
Description
Technical Field
The invention relates to the technical field of automobile body structures, in particular to a split type modularized rear floor assembly and an assembling method thereof.
Background
In the traditional vehicle body manufacturing route, a process method of firstly stamping a single piece and then welding the single piece into a vehicle body assembly is adopted. A vehicle is made up of about 500 parts of different shapes and materials by welding. Before the positive production of the whole vehicle, the manufacturing states (materials, tooling equipment, processes, product percent of pass, packaging, transportation and the like) of the 500 parts are strictly checked and solidified through matching and debugging for three rounds and 6 months, so that the final vehicle body quality can be ensured to meet the assembly requirements.
Recently, an integrated die-casting forming technology becomes a new trend of vehicle body manufacturing, and the integrated die-casting and one-step forming are realized without a complex process of firstly stamping and then welding. The manufacturing process is extremely simple. Only one part is needed, excessive tool equipment does not need to be developed, and error accumulation caused by connection of a large number of parts is avoided. The manufacturing precision is controllable. The manufacturing state of each part does not need to be checked, so that the complex manufacturing process of the vehicle body can be shortened, and the manufacturing cost of the vehicle body can be greatly reduced. However, the existing integral die-casting mode is large parts, the existing integral engine room and the integral rear floor are more, because the size is large and the interface is complex, a die-casting die with the level of about six to seven million or even ten million is often needed, the investment of corresponding die-casting equipment is huge, and the investment once reaches the hundred million yuan level. In addition, a large part is integrally integrated through integrated die casting, the whole part needs corresponding wall thickness, the opportunity of accurately placing corresponding material characteristics at the correct position is lost, and in many cases, the conventional metal plate structure can achieve the purpose. In addition, large components are difficult to maintain in the case of collision, which results in high later maintenance costs.
Disclosure of Invention
The invention aims to provide a split type modularized rear floor assembly and an assembling method thereof, which can take the advantages of an integrated floor assembly and a welded floor assembly into consideration and can effectively realize the modularized design of arrangement and corresponding performance.
In order to achieve the purpose, the split type modularized rear floor assembly comprises a left rear wheel cover, a right rear wheel cover, a rear floor front casting, a rear floor middle casting and a rear floor rear casting, wherein the rear edge of the front casting of the rear floor front casting is fixedly connected with the front edge of the middle casting of the rear floor middle casting, the rear edge of the middle casting of the rear floor middle casting is fixedly connected with the front edge of the rear casting of the rear floor rear casting, the right edge of the middle casting of the rear floor middle casting is fixedly connected with the lower edge of the inner side of the right rear wheel cover, the position of the fixed connection point is adjusted according to the model and the installation position of a shock absorber, the left edge of the middle casting of the rear floor middle casting is fixedly connected with the lower edge of the inner side of the left rear wheel cover, and the position of the fixed connection point is adjusted according to the model and the installation position of the shock absorber.
The invention has the beneficial effects that:
1. according to the invention, the thickness of the casting material and the distribution of the ribs of the rear floor rear casting are adjustable, the modular performance matching design can be realized, and the maintenance cost in the collision process is reduced;
2. according to the left and right rear wheel cover castings, holes can be machined at the mounting positions of the rear suspension shock absorbers according to different vehicle types, and the modular matching design of connection with the rear suspension can be realized;
3. the length of the front floor front casting in the vehicle length direction (X direction) is adjustable, and the change of the vehicle body wheelbase can be realized in a modularized manner;
4. the number of parts is still more than that of the integrally cast engine room, the manufacturing process is not simplified by integral casting, but the integral casting is greatly optimized relative to a welding engine room. The mold tooling and the like are put into and manufactured for one time, and the precision is balanced and controllable.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view showing the assembly relationship of front, middle and rear castings of the rear floor panel according to the present invention;
FIG. 3 is a schematic view of the assembled relationship of the rear wheel cover and the floor casting of the present invention;
FIG. 4 is a schematic view of the assembly process of the present invention;
FIG. 5 is a schematic view of the assembly of the present invention with a front floor assembly.
Wherein, 1-left rear wheel cover, 1.1-left rear wheel cover inside lower edge, 2-right rear wheel cover, 2.1-right rear wheel cover inside lower edge, 3-rear floor front casting, 3.1-front casting rear edge, 3.2-front casting front edge, 4-rear floor middle casting, 4.1-middle casting front edge, 4.2-middle casting rear edge, 4.3-middle casting right edge, 4.4-middle casting left edge, 5-rear floor rear casting, 5.1-rear casting front edge, 6-front floor assembly, 6.1-front floor rear edge, 6.2-front floor front edge, 7-shock absorber mounting hole.
Detailed Description
The invention is described in further detail below with reference to the following figures and specific examples:
as shown in fig. 1 to 5, a split type modularized rear floor assembly comprises a left rear wheel cover 1, a right rear wheel cover 2, a rear floor front casting 3, a rear floor middle casting 4 and a rear floor rear casting 5, wherein a rear edge 3.1 of the front casting of the rear floor front casting 3 is fixedly connected (arc-welded) with a front edge 4.1 of a middle casting of the rear floor middle casting 4, a rear edge 4.2 of the middle casting of the rear floor middle casting 4 is fixedly connected (arc-welded) with a front edge 5.1 of the rear casting of the rear floor rear casting 5, a right edge 4.3 of the middle casting of the rear floor middle casting 4 is fixedly connected (arc-welded) with a lower edge 2.1 of an inner side (i.e. an inner side of a vehicle) of a right rear wheel cover of the right rear wheel cover 2, the position of the fixed connection point is adjusted according to the model and the installation position of a shock absorber (the wheel cover is a casting body, the corresponding shock absorber installation hole 7 can be realized by machine programming, shock absorber installation holes 7 with different positions and sizes can be machined by changing the programming procedure, the bumper shock absorbers are installed in a matched mode at different types of bumper shock absorbers and at different installation point positions of the same type of bumper shock absorbers), the left edge 4.4 of the middle casting of the casting 4 in the rear floor is fixedly connected with the lower edge 1.1 of the inner side of the left rear wheel cover 1 (due to the fact that the sum of the thicknesses of the local connection parts at the two edges is more than 8mm, bolts or arc welding connection is generally adopted, but the operation space required by the bolts is large, operation is not easy, and the watertightness is not well guaranteed, so arc welding connection is generally adopted), and the positions of the fixed connection points are correspondingly adjusted according to the types and the installation positions of the bumper shock absorbers (the wheel cover is a casting body, the corresponding bumper shock absorber installation holes 7 can be achieved through machining and programming, the bumper shock absorber installation holes 7 with different positions and sizes can be machined through changing the programming program, and the bumper shock absorbers with different installation point positions of different types and the same type are installed in a matched mode).
In the technical scheme, the front casting front edge 3.2 of the rear floor front casting 3 is connected with the front floor rear edge 6.1 of the front floor assembly 6 through arc welding and riveting.
In the technical scheme, the left rear wheel cover 1, the right rear wheel cover 2, the rear floor front casting 3, the rear floor middle casting 4 and the rear floor rear casting 5 are all integrally cast parts. The above design is mainly considered from the overall structural functional blocks, and in the structural design of the rear floor assembly, the parts are relatively independent from the perspective of environmental interface and the perspective of performance (collision, NVH, rigidity and durability), as will be described in terms of functions of the parts hereinafter. If the floor is subdivided, the floor is not different from the floor assembly after the sheet metal part is subdivided, and the manufacturing time is increased; if the alloy is further integrated into an integrated casting, the advantages of the invention cannot be embodied, and the defects of complex processing technology, poor maintenance economy and the like are caused.
In the technical scheme, the rear floor front casting 3 is provided with a seat, a rear suspension and a safety belt fixing point and is also a component of a vehicle body framework, so that the overall torsional rigidity and the side impact performance of the vehicle are ensured.
The rear floor middle casting 4 is provided with a seat and a rear suspension fixing point and is a component of a vehicle body framework, and the overall torsional rigidity and the side impact performance of the vehicle are guaranteed.
The rear floor rear casting 5 is provided with a rear suspension fixing point and an exhaust system fixing point, and is also a component of a vehicle body framework, so that the overall torsional rigidity and the rear collision performance of the vehicle are ensured.
In the above technical scheme, the casting material thickness and the rib distribution of the rear floor rear casting 5 are adjusted according to the performance in the rear collision process. The muscle of back floor back foundry goods is mainly that Z is to open-ended perpendicular muscle, the height and the interval that distributes of muscle, and the performance decides after mainly bumping the in-process according to, and the muscle is higher, and it is more dense to distribute, bumps the performance after and generally can be better, but weight can promote, and the shaping is also more difficult, so generally be satisfying after bump under the performance prerequisite, reduce the height of muscle and the interval of increase muscle as far as possible. The design is to have better weight reduction effect and part formability on the premise of ensuring the corresponding performance.
The dimension of the rear floor front casting 3 in the vehicle length direction is adjusted according to the length of the front floor assembly 6 and the designed vehicle wheelbase. The wheel base is one of the general parameters defined by the vehicle body, and after a split casting scheme is made, the wheel base is mainly determined by the radius of a tire, the length of a front casting of a front floor, the length of the front floor and the length of a front casting of a rear floor. Therefore, when vehicles with different wheelbases are manufactured, the front floor can be ensured to be unchanged, and the length of the front casting of the front floor or the length of the front casting of the rear floor or both the front casting of the front floor and the rear casting of the rear floor can be changed to realize the effect of different wheelbases. The design can realize that the vehicle types with different wheelbases on the same platform have the minimum change amount of the corresponding vehicle body structures in the development process, improve the sharing rate of the vehicle body structures of different vehicle types and is favorable for realizing the modularization strategy of the platform vehicle body development.
An assembly method of a split type modularized rear floor assembly comprises the following steps:
step 1: the rear edge 3.1 of the front casting of the rear floor front casting 3 is connected with the front edge 4.1 of the middle casting of the rear floor middle casting 4 by arc welding, the rear edge 4.2 of the middle casting of the rear floor middle casting 4 is connected with the front edge 5.1 of the rear casting of the rear floor rear casting 5 by arc welding, and a rear floor welding joint is formed;
step 2: the right edge 4.3 of the middle casting of the casting 4 in the rear floor is arc-welded with the lower edge 2.1 of the inner side of the right rear wheel cover 2, the welding point position is correspondingly adjusted according to the type and the installation position of the shock absorber, the left edge 4.4 of the middle casting of the casting 4 in the rear floor is arc-welded with the lower edge 1.1 of the inner side of the left rear wheel cover 1, and the arc-welding connection point position is correspondingly adjusted according to the type and the installation position of the shock absorber, so that a split type modularized rear floor assembly is formed;
and 3, connecting the front casting front edge 3.2 of the rear floor front casting 3 in the split type modular rear floor assembly with the front floor rear edge 6.1 of the front floor assembly 6 by welding and riveting to form a floor welding assembly. The front floor and the rear floor are spliced into a floor welding assembly, the subsequent process is consistent with the existing mature assembly process of the white car body (the floor welding assembly is sent to a main line, and the left side wall and the right side wall and the top cover are spliced), so that the consistency of the whole process before and after changing can be ensured, and the assembly quality is improved.
The structure of the invention combines the advantages of the traditional welded rear floor assembly and the integrally cast rear floor assembly, and can realize the following functions: 1. the modular structure design can realize the performance matching design and realize the arrangement and the man-machine change through the module adjustment; 2. the mold tooling and the like are put into and manufactured for one time, and the precision is balanced and controllable; 3. and through the modularized performance matching design, the maintenance cost in the collision process is reduced.
Details not described in this specification are within the skill of the art that are well known to those skilled in the art.
Claims (10)
1. The utility model provides a floor assembly behind split type modularization which characterized in that: it comprises a left rear wheel cover (1), a right rear wheel cover (2), a rear floor front casting (3), a rear floor middle casting (4) and a rear floor rear casting (5), wherein, the rear edge (3.1) of the front casting of the rear floor front casting (3) is fixedly connected with the front edge (4.1) of the middle casting of the rear floor middle casting (4), the rear edge (4.2) of the middle casting of the rear floor middle casting (4) is fixedly connected with the front edge (5.1) of the rear casting of the rear floor rear casting (5), the right edge (4.3) of the middle casting of the rear floor middle casting (4) is fixedly connected with the inner side lower edge (2.1) of the right rear wheel cover (2), and the position of the fixed connection point is correspondingly adjusted according to the model and the installation position of the shock absorber, the left edge (4.4) of the middle casting (4) of the rear floor is fixedly connected with the lower edge (1.1) of the inner side of the left rear wheel cover (1), and the position of the fixed connection point is correspondingly adjusted according to the model and the installation position of the shock absorber.
2. The split modular rear floor assembly of claim 1, wherein: the front edge (3.2) of the front casting of the rear floor front casting (3) is fixedly connected with the rear edge (6.1) of the front floor assembly (6).
3. The split modular rear floor assembly of claim 2, wherein: the left rear wheel cover (1), the right rear wheel cover (2), the rear floor front casting (3), the rear floor middle casting (4) and the rear floor rear casting (5) are all integrally cast parts.
4. The split modular rear floor assembly of claim 1, wherein: the rear floor front casting (3) is provided with a seat, a rear suspension and a safety belt fixing point, and is also a component of a vehicle body framework, so that the overall torsional rigidity and the side impact performance of the vehicle are ensured.
5. The split modular rear floor assembly of claim 1, wherein: the rear floor middle casting (4) is provided with a seat and a rear suspension fixing point and is a component of a vehicle body framework, and the overall torsional rigidity and the side impact performance of the vehicle are guaranteed.
6. The split modular rear floor assembly of claim 1, wherein: the rear floor rear casting (5) is provided with a rear suspension fixing point and an exhaust system fixing point and is also a component of a vehicle body framework, and the overall torsional rigidity and the rear collision performance of the vehicle are guaranteed.
7. The split modular rear floor assembly of claim 1, wherein: the thickness of the casting material and the distribution of the ribs of the rear floor rear casting (5) are adjusted according to the performance in the rear collision process.
8. The split modular rear floor assembly of claim 1, wherein: the size of the rear floor front casting (3) in the vehicle length direction is adjusted according to the length of the front floor assembly (6) and the designed vehicle wheel base.
9. An assembly method of a split modular rear floor assembly, comprising the steps of:
step 1: the rear edge (3.1) of the front casting of the rear floor front casting (3) is connected with the front edge (4.1) of the middle casting of the rear floor middle casting (4) in an arc welding mode, the rear edge (4.2) of the middle casting of the rear floor middle casting (4) is connected with the front edge (5.1) of the rear casting of the rear floor rear casting (5) in an arc welding mode, and a rear floor welding joint is formed;
step 2: the right edge (4.3) of the middle casting (4) of the rear floor is in arc welding connection with the lower edge (2.1) of the inner side of the right rear wheel cover (2), the welding point position is correspondingly adjusted according to the type of the shock absorber and the installation position, the left edge (4.4) of the middle casting of the rear floor (4) is in arc welding connection with the lower edge (1.1) of the inner side of the left rear wheel cover (1), and the arc welding connection point position is correspondingly adjusted according to the type of the shock absorber and the installation position, so that the split type modularized rear floor assembly is formed.
10. The method of assembling a split modular rear floor assembly of claim 9, wherein: and step 3 is also included after the step 2, the front casting front edge (3.2) of the front casting (3) of the rear floor in the split type modularized rear floor assembly and the front floor rear edge (6.1) of the front floor assembly (6) are connected into a floor welding assembly through welding and riveting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210785209.8A CN115123400A (en) | 2022-06-29 | 2022-06-29 | Split type modular rear floor assembly and assembling method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210785209.8A CN115123400A (en) | 2022-06-29 | 2022-06-29 | Split type modular rear floor assembly and assembling method thereof |
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| Publication Number | Publication Date |
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| CN115123400A true CN115123400A (en) | 2022-09-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202210785209.8A Pending CN115123400A (en) | 2022-06-29 | 2022-06-29 | Split type modular rear floor assembly and assembling method thereof |
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Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06211170A (en) * | 1993-01-20 | 1994-08-02 | Nissan Motor Co Ltd | Rear body structure for automobile |
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| JP2006321366A (en) * | 2005-05-19 | 2006-11-30 | Honda Motor Co Ltd | Bodywork |
| 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 |
| CN209176797U (en) * | 2018-12-04 | 2019-07-30 | 苏州同捷汽车科技发展有限公司 | Floor assembly in a kind of automobile |
| CN210454993U (en) * | 2019-07-17 | 2020-05-05 | 江铃重型汽车有限公司 | Medium-weight truck floor structure developed in platformization mode |
| CN213502606U (en) * | 2020-11-16 | 2021-06-22 | 东风小康汽车有限公司重庆分公司 | Automobile rear floor assembly |
| CN113306634A (en) * | 2021-07-09 | 2021-08-27 | 安徽江淮汽车集团股份有限公司 | Floor structure behind small-size car GMT |
| CN214215951U (en) * | 2020-11-16 | 2021-09-17 | 北京汽车股份有限公司 | Floor structure and car behind car |
| CN215285018U (en) * | 2021-02-01 | 2021-12-24 | 北京汽车股份有限公司 | Rear floor structure and car |
| CN215883809U (en) * | 2021-08-13 | 2022-02-22 | 长城汽车股份有限公司 | Rear end reinforcing structure of vehicle body |
| CN215883808U (en) * | 2021-08-13 | 2022-02-22 | 长城汽车股份有限公司 | Rear end structure of vehicle body |
| CN216546397U (en) * | 2021-11-12 | 2022-05-17 | 浙江零跑科技股份有限公司 | Rear floor assembly structure of new energy automobile |
-
2022
- 2022-06-29 CN CN202210785209.8A patent/CN115123400A/en active Pending
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06211170A (en) * | 1993-01-20 | 1994-08-02 | Nissan Motor Co Ltd | Rear body structure for automobile |
| JP2001233247A (en) * | 2000-02-22 | 2001-08-28 | Mitsubishi Automob Eng Co Ltd | Vehicle body structure |
| JP2006321366A (en) * | 2005-05-19 | 2006-11-30 | Honda Motor Co Ltd | Bodywork |
| 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 |
| CN209176797U (en) * | 2018-12-04 | 2019-07-30 | 苏州同捷汽车科技发展有限公司 | Floor assembly in a kind of automobile |
| CN210454993U (en) * | 2019-07-17 | 2020-05-05 | 江铃重型汽车有限公司 | Medium-weight truck floor structure developed in platformization mode |
| CN213502606U (en) * | 2020-11-16 | 2021-06-22 | 东风小康汽车有限公司重庆分公司 | Automobile rear floor assembly |
| CN214215951U (en) * | 2020-11-16 | 2021-09-17 | 北京汽车股份有限公司 | Floor structure and car behind car |
| CN215285018U (en) * | 2021-02-01 | 2021-12-24 | 北京汽车股份有限公司 | Rear floor structure and car |
| CN113306634A (en) * | 2021-07-09 | 2021-08-27 | 安徽江淮汽车集团股份有限公司 | Floor structure behind small-size car GMT |
| CN215883809U (en) * | 2021-08-13 | 2022-02-22 | 长城汽车股份有限公司 | Rear end reinforcing structure of vehicle body |
| CN215883808U (en) * | 2021-08-13 | 2022-02-22 | 长城汽车股份有限公司 | Rear end structure of vehicle body |
| CN216546397U (en) * | 2021-11-12 | 2022-05-17 | 浙江零跑科技股份有限公司 | Rear floor assembly structure of new energy automobile |
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Application publication date: 20220930 |
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