CN110877638B - Reinforcing structure for improving torsional rigidity of rear part of vehicle body and mounting method thereof - Google Patents
Reinforcing structure for improving torsional rigidity of rear part of vehicle body and mounting method thereof Download PDFInfo
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- CN110877638B CN110877638B CN201911173982.3A CN201911173982A CN110877638B CN 110877638 B CN110877638 B CN 110877638B CN 201911173982 A CN201911173982 A CN 201911173982A CN 110877638 B CN110877638 B CN 110877638B
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- 230000003014 reinforcing effect Effects 0.000 title claims abstract description 37
- 238000000034 method Methods 0.000 title claims abstract description 24
- WSNMPAVSZJSIMT-UHFFFAOYSA-N COc1c(C)c2COC(=O)c2c(O)c1CC(O)C1(C)CCC(=O)O1 Chemical compound COc1c(C)c2COC(=O)c2c(O)c1CC(O)C1(C)CCC(=O)O1 WSNMPAVSZJSIMT-UHFFFAOYSA-N 0.000 claims abstract description 19
- 238000003466 welding Methods 0.000 claims description 53
- 239000002184 metal Substances 0.000 claims description 21
- 239000000725 suspension Substances 0.000 claims description 3
- 230000000712 assembly Effects 0.000 claims description 2
- 238000000429 assembly Methods 0.000 claims description 2
- 238000009434 installation Methods 0.000 abstract description 4
- 238000010009 beating Methods 0.000 description 4
- 238000005336 cracking Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000002159 abnormal effect Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000014509 gene expression Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
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- 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
- B62D25/02—Side panels
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- 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
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- 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
- B62D25/04—Door pillars ; windshield pillars
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- 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
- B62D25/06—Fixed roofs
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- 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
Abstract
A reinforcing structure for improving the torsional rigidity of the rear part of a car body and an installation method thereof belong to the technical field of car body structures, the reinforcing structure comprises a cavity structure I formed by connecting a rear top cross beam upper connecting plate, a rear top cross beam lower connecting plate and a C column inner plate body and a cavity structure II formed by connecting a D column lower connecting plate, a rear surrounding connecting plate, a rear tail lamp installation plate and a side wall outer plate rear connecting plate, the cavity structure II is communicated with the cavity structure I to form a columnar cavity structure, and D column supporting components are arranged in the cavity structure I and the cavity structure II. Meanwhile, the problems of stability in operation and steering performance generated in the driving process under bad road conditions are also avoided.
Description
Technical Field
The invention relates to the technical field of automobile body structures, in particular to a reinforcing structure for improving torsional rigidity of the rear part of an automobile body and an installation method thereof.
Background
From the automobile invention to the present, people continuously improve the structure of the automobile body to achieve the purpose of comfortable and stable riding, wherein the torsional rigidity of the body in white is an important index for evaluating the performance of the whole automobile. In the early development process of the vehicle body structure, the white vehicle body needs to be ensured to have enough torsional rigidity, the target value requirement is met, and the problem that the cost is increased due to repeated modification of the structure caused by too low torsional rigidity of the white vehicle body in the later period is avoided. The white car body has insufficient torsional rigidity and low natural frequency, resonance is easily caused, the structure is unstable, noise is generated, the connection strength of a structural joint is weakened, the durability, NVH (noise vibration and harshness) performance and operation stability of the whole car body are affected, even the rear part of the car body is seriously deformed in the driving process, noise problems such as abnormal sound are generated, and meanwhile, the strength problems such as cracking of a sheet metal part are caused.
In order to improve the modal stiffness performance of a body-in-white, the current common methods are as follows: and changing the material thickness of related vehicle body sheet metal parts at the key structure of the rear vehicle body, or adding a reinforcing part. These conventional approaches are often accompanied by the disadvantages of increased overall vehicle weight and increased manufacturing costs for the individual vehicle.
Therefore, how to provide a white body framework reinforcing structure to effectively improve the torsional rigidity of a white body so as to avoid the durability problems of abnormal sound resonance, cracking and the like of an automobile in the driving process is a problem to be solved at present.
Disclosure of Invention
In order to solve the technical problems, the invention provides a reinforcing structure for improving the torsional rigidity of the rear part of a vehicle body, which improves the torsional rigidity of a body-in-white by improving the structure of a door opening at the rear part of the vehicle body, avoids the problems of large deformation, resonance, noise and the like generated in the driving process of an automobile, and can also avoid the problems of stability in operation and steering performance generated in the driving process under bad road conditions.
In order to achieve the purpose, the technical scheme adopted by the invention for solving the technical problems is as follows: the reinforcing structure for improving the torsional rigidity of the rear part of the vehicle body comprises a rear top cross beam upper connecting plate, a C-column inner plate body, a rear tail lamp mounting plate, a side wall outer plate rear connecting plate, a rear top cross beam lower connecting plate, a D-column lower connecting plate and a rear wall connecting plate, wherein the C-column inner plate body is connected between the rear top cross beam upper connecting plate and the rear top cross beam lower connecting plate to form a cavity structure I; the rear top crossbeam upper junction plate passes through the back tail lamp mounting panel and links to each other with side wall planking back connection plate, C post inner panel body lower extreme encloses the connection plate after passing through D post lower junction plate and links to each other, connect between D post lower junction plate, after enclose the connection plate and back tail lamp mounting panel, side wall planking back connection plate and form cavity structure II, cavity structure II with cavity structure I is linked together and forms the column cavity structure, set up D post supporting component in cavity structure I and the cavity structure II.
Furthermore, D post supporting component is including connecting the D post upper strut board in cavity structure I and connecting the D post lower strut board in cavity structure II.
Furthermore, the rear top cross beam lower connecting plate is connected with the C-pillar inner plate body through spot welding after being spliced, and the rear top cross beam upper connecting plate is connected with the rear top cross beam lower connecting plate and the outer side of the C-pillar inner plate body through spot welding to form the cavity structure I; one end of the D pillar upper supporting plate is connected with the lower connecting plate of the rear top cross beam and the splicing part of the C pillar inner plate body, and the other end of the D pillar upper supporting plate is connected with the upper connecting plate of the rear top cross beam in a spot welding manner.
Furthermore, a D-column reinforcing plate is welded at the joint of the upper connecting plate of the rear top cross beam and the outer side of the C-column inner plate body, one side of the D-column reinforcing plate is in lap joint with the C-column inner plate body and then is in spot welding connection, and the other side of the D-column reinforcing plate is in lap joint with the upper connecting plate of the rear top cross beam and then is in spot welding connection.
Further, enclose the connecting plate after including setting up respectively the bottom panel beating of connecting plate bottom under the D post with the side panel beating of connecting plate one side under the D post, bottom panel beating, side panel beating and side wall planking back connection board spot welding are connected.
Furthermore, a structure enclosed by the D column lower connecting plate and the rear surrounding connecting plate is internally provided with the D column lower supporting plate, and the D column lower supporting plate is connected with the side surrounding outer plate rear connecting plate in a spot welding manner.
Furthermore, a gutter channel is arranged on the inner side of the rear top beam upper connecting plate, the C-column inner plate body, the rear tail lamp mounting plate, the side wall outer plate rear connecting plate, the rear top beam lower connecting plate and the D-column lower connecting plate after being connected.
Furthermore, lightening holes are formed in the rear top cross beam lower connecting plate, the D column lower connecting plate and the rear wall connecting plate.
The installation method of the reinforcing structure for improving the torsional rigidity of the rear part of the vehicle body comprises the following steps:
1) the rear top cross beam lower connecting plate is connected with the C column inner plate body through spot welding after being spliced, and the D column upper supporting plate is welded at the splicing position of the rear top cross beam lower connecting plate and the C column inner plate body;
2) the lower end of the C-pillar inner plate body is connected with the D-pillar lower connecting plate in a spot welding mode, the periphery of the D-pillar lower connecting plate is connected with the rear periphery connecting plate in a spot welding mode, and the D-pillar lower supporting plate is connected in the D-pillar lower connecting plate in a spot welding mode;
3) the rear top cross beam upper connecting plate is connected to the outer sides of the rear top cross beam lower connecting plate and the C column inner plate body in a spot welding mode, the D column reinforcing plate is welded at the connecting position of the rear top cross beam upper connecting plate and the C column inner plate body, and the D column upper supporting plate is connected to the inner side of the rear top cross beam upper connecting plate in a spot welding mode to form the cavity structure I;
4) the lower extreme of back top crossbeam upper junction plate is connected with back tail lamp mounting panel, side wall planking back connection plate spot welding in proper order, with the inboard of side wall planking back connection plate with D post bottom suspension fagging spot welding links to each other, will back wall connection plate, D post bottom connection plate with back tail lamp mounting panel, side wall planking back connection plate spot welding are connected, form cavity structure II.
The invention has the beneficial effects that:
1. the invention forms a cavity closed loop structure through a white automobile body rear door opening, and comprises a cavity structure I formed by connecting a rear top beam upper connecting plate, a rear top beam lower connecting plate and a C column inner plate body, a cavity structure II formed by connecting D column lower connecting plates, a rear surrounding connecting plate, a rear tail lamp mounting plate and a side wall outer plate rear connecting plate, wherein the cavity structure I and the cavity structure I are communicated to form a columnar cavity structure, so that sudden change or interruption of load in the process of transmitting the load from the front part of an automobile body to the rear part is avoided, the load transmission continuity is ensured, the columnar cavity structure enables the torsion resistance of a sheet metal at the rear part of the automobile body to be higher, D column supporting components are respectively arranged in the cavity structure I and the cavity structure II, the rigidity of an annular structure at the rear part of the automobile body is enhanced, the closed ring is prevented from being changed into an open ring, and the torsion rigidity of the white automobile body can be improved by, the torsional rigidity is ensured to reach a higher level, the problems of large deformation, resonance, noise and the like generated behind the vehicle body in the driving process are avoided, and the problems of stability in operation and steering performance generated in the driving process under bad road conditions are also avoided.
2. The D column reinforcing plate is welded at the joint of the outer sides of the upper connecting plate of the rear top beam and the inner plate body of the C column, the two sides of the D column reinforcing plate are respectively connected with the upper connecting plate of the rear top beam and the C column inner plate body in a lap joint and then in spot welding mode, the rigidity of the upper joint of the D column is improved, meanwhile, the rear surrounding connecting plate is arranged at the bottom and one side of the lower connecting plate of the D column, the rear surrounding connecting plate is in spot welding connection with the lower connecting plate of the D column, the rigidity of the lower joint of the D column is improved, the connection rigidity of the upper joint angle and the lower joint angle is optimized, the connection with the upper vehicle body and the lower vehicle body.
3. The vehicle body sheet metal parts are connected in a spot welding mode, so that the connection strength is ensured; the rear top cross beam lower connecting plate, the D column lower connecting plate and the rear wall connecting plate are provided with lightening holes, the material thickness of the sheet metal part of the vehicle body is controlled, the weight of the white vehicle body is reduced, the light weight of the vehicle body is facilitated, and the cost of the whole vehicle is reduced.
In conclusion, the reinforcing structure provided by the invention ensures the continuity of load transfer, effectively improves the torsional rigidity of the body-in-white, avoids the problems of local large deformation, resonance, noise and the like in the driving process of the body, improves the rigidity of the key joint, avoids fatigue damage possibly caused by local weak points after repeated loading, and also avoids the problems of stability in operation and steering performance in the driving process under bad road conditions.
Drawings
The contents of the expressions in the various figures of the present specification and the labels in the figures are briefly described as follows:
FIG. 1 is a schematic view of the exterior of the present invention;
FIG. 2 is a schematic view of the internal structure of the present invention;
the labels in the above figures are: 1. the automobile rear tail lamp comprises a rear top beam upper connecting plate, 2.C column inner plate bodies, 3. a rear tail lamp mounting plate, 4. side wall outer plate rear connecting plates, 5. rear top beam lower connecting plates, 6.D column lower connecting plates, 7. rear wall connecting plates, 71. bottom metal plates, 72. side metal plates, 8.D column supporting assemblies, 81.D column upper supporting plates, 82.D column lower supporting plates, 9.D column reinforcing plates, 10. launders and 11. lightening holes.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and the following embodiments are used for illustrating the present invention and are not intended to limit the scope of the present invention.
In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The specific implementation scheme of the invention is as follows: as shown in fig. 1 and 2, a reinforcing structure for improving torsional rigidity of a rear part of a vehicle body comprises a rear top beam upper connecting plate 1, a C-pillar inner plate body 2, a rear tail lamp mounting plate 3, a side wall outer plate rear connecting plate 4, a rear top beam lower connecting plate 5, a D-pillar lower connecting plate 6 and a rear wall connecting plate 7, wherein the C-pillar inner plate body 2 is connected between the rear top beam upper connecting plate 1 and the rear top beam lower connecting plate 5 to form a cavity structure i; the upper connecting plate 1 of the rear top beam is connected with the rear connecting plate 4 of the side wall outer plate through the rear tail lamp mounting plate 3, the lower end of the C column inner plate body 2 is connected with the rear surrounding connecting plate 7 through the D column lower connecting plate 6, the rear surrounding connecting plate 7, the rear tail lamp mounting plate 3 and the rear connecting plate 4 of the side wall outer plate are connected to form a cavity structure II, the cavity structure II is communicated with the cavity structure I and forms a columnar cavity structure, sudden change or interruption of load in the process of transmitting the load from the front part of a vehicle body to the rear part is avoided, the continuity of load transmission is ensured, and the torsional resistance of a metal plate at the rear part of the vehicle body is higher when the load is transmitted along the reinforcing structure by the columnar cavity structure, D column supporting components 8 are arranged in the cavity structure I and the cavity structure II, and the D column supporting components 8 comprise D column supporting plates 81 connected, the upper half section of the D column and the lower half section of the D column form closed rings respectively, the rigidity of an annular structure at the rear part of the vehicle body is enhanced, the closed rings are prevented from being changed into split rings, and the torsional rigidity of the vehicle body in white can be improved by about 8% by the structure at the rear part of the vehicle body in white through CAE analysis, so that the torsional rigidity is ensured to reach a higher level, the problems of large deformation, resonance, noise and the like generated in the driving process of the vehicle body at the rear part are avoided, and the problems of stability in operation and steering performance generated in the driving process of bad road conditions are also avoided.
Specifically, a rear top cross beam lower connecting plate 5 is connected with a C column inner plate body 2 through spot welding after being spliced, a rear top cross beam upper connecting plate 1 is connected with the rear top cross beam lower connecting plate 5 and the outer side of the C column inner plate body 2 through spot welding to form a cavity structure I, so that the C column inner plate body 2 is connected and fixed between the rear top cross beam upper connecting plate 1 and the rear top cross beam lower connecting plate 5, and the overall structure is more stable; one end of the D column upper supporting plate 81 is connected to the splicing part of the rear top cross beam lower connecting plate 5 and the C column inner plate body 2, the structural strength and the whole rigidity of the connecting part of the sheet metal part are improved, the other end of the D column upper supporting plate 81 is connected with the rear top cross beam upper connecting plate 1 in a spot welding mode, the D column upper supporting plate 81 improves the structural rigidity of the D column upper half section and enables the D column upper half section to form a sealing closed ring, and the torsional rigidity of the D column upper half section is improved.
Specifically, a D-column reinforcing plate 9 is welded at the joint of the upper connecting plate 1 of the rear top cross beam and the outer side of the C-column inner plate body 2, one side of the D-column reinforcing plate 9 is in lap joint and then in spot welding connection with the C-column inner plate body 2, and the other side of the D-column reinforcing plate 9 is in lap joint and then in spot welding connection with the upper connecting plate 1 of the rear top cross beam, so that the rigidity of the upper joint of the D-column is improved; the rear wall connecting plate 7 comprises a bottom metal plate 71 and a side metal plate 72, wherein the bottom metal plate 71 is arranged at the bottom of the D column lower connecting plate 6, the side metal plate 72 is connected with the side wall outer plate rear connecting plate 4 in a spot welding mode, the rigidity of the D column lower connector is improved, the connecting structure of the upper connector angle and the lower connector angle is optimized, the rigidity of the key connector structure is improved, the problems of stress concentration and insufficient rigidity are solved, the connection between the upper vehicle body and the lower vehicle body is enhanced, the cracking risk is reduced, and the torsional rigidity of the white vehicle body is further improved.
Specifically, a D-column lower supporting plate 82 is welded in a structure formed by enclosing the D-column lower connecting plate 6 and the rear enclosing connecting plate 7, the D-column lower supporting plate 82 is connected with the side-wall outer plate rear connecting plate 4 in a spot welding mode, the structural rigidity of the upper half section and the lower half section of the D column is improved by the D-column lower supporting plate 82, the lower half section of the D column forms a sealed closed ring, and the torsional rigidity of the lower half section of the D column is improved.
In addition, a gutter channel 10 is arranged on the inner side of the rear top beam upper connecting plate 1, the C-column inner plate body 2, the rear tail lamp mounting plate 3, the side wall outer plate rear connecting plate 4, the rear top beam lower connecting plate 5 and the D-column lower connecting plate 6 after connection, so that rainwater can be guided out in time; lightening holes 11 are formed in key connecting pieces such as the rear top cross beam lower connecting plate 5, the D column lower connecting plate 6 and the rear surrounding connecting plate 7, meanwhile, the weight of a white car body is lightened by controlling the material thickness of a car body sheet metal part, the light weight of the car body is facilitated, and the cost of the whole car is reduced; and all link to each other through the mode of spot welding between the above-mentioned automobile body sheet metal component, guaranteed joint strength.
The mounting method of the reinforcing structure for improving the torsional rigidity of the rear part of the vehicle body comprises the following steps:
1) the rear top beam lower connecting plate 5 is connected with the C column inner plate body 2 through spot welding after being spliced, and the D column upper supporting plate 81 is welded at the splicing position of the rear top beam lower connecting plate 5 and the C column inner plate body 2.
2) The lower end of the C-pillar inner plate body 2 is connected with the D-pillar lower connecting plate 6 in a spot welding mode, the periphery of the D-pillar lower connecting plate 6 is connected with the rear wall connecting plate 7 in a spot welding mode, and the D-pillar lower supporting plate 82 is connected in the D-pillar lower connecting plate 6 in a spot welding mode.
3) The rear top cross beam upper connecting plate 1 is connected to the outer sides of the rear top cross beam lower connecting plate 5 and the C column inner plate body 2 in a spot welding mode, a D column reinforcing plate 9 is welded at the connecting position of the rear top cross beam upper connecting plate 1 and the C column inner plate body 2, and a D column upper supporting plate 81 is connected to the inner side of the rear top cross beam upper connecting plate 1 in a spot welding mode to form a cavity structure I;
4) the lower end of the upper connecting plate 1 of the rear top beam is sequentially connected with the rear tail lamp mounting plate 3 and the rear connecting plate 4 of the side wall outer plate in a spot welding mode, the inner side of the rear connecting plate 4 of the side wall outer plate is connected with the D column lower supporting plate 82 in a spot welding mode, the rear connecting plate 7 and the D column lower connecting plate 6 are connected with the rear tail lamp mounting plate 3 and the rear connecting plate 4 of the side wall outer plate in a spot welding mode, and a cavity structure II is. And finally, welding and connecting the reinforcing structure with the outer plate of the rear wheel cover.
In conclusion, the reinforcing structure provided by the invention ensures the continuity of load transfer, effectively improves the torsional rigidity of a body-in-white, avoids the problems of local large deformation, resonance, noise and the like in the driving process of the body, improves the rigidity of a weak point at which the upper joint of the D column and the lower joint of the D column are connected, avoids fatigue damage possibly caused by the local weak point after repeated loading, and simultaneously avoids the problems of stability operation and steering performance in the driving process under bad road conditions.
While the foregoing is directed to the principles of the present invention, other and further embodiments of the invention may be devised without departing from the basic scope thereof, and the scope thereof is determined by the claims that follow.
Claims (6)
1. A reinforcing structure for improving the torsional rigidity of the rear part of a vehicle body is characterized by comprising a rear top cross beam upper connecting plate (1), a C column inner plate body (2), a rear tail lamp mounting plate (3), a side wall outer plate rear connecting plate (4), a rear top cross beam lower connecting plate (5), a D column lower connecting plate (6) and a rear wall connecting plate (7), wherein the C column inner plate body (2) is connected between the rear top cross beam upper connecting plate (1) and the rear top cross beam lower connecting plate (5) to form a cavity structure I; the rear top cross beam upper connecting plate (1) is connected with a side wall outer plate rear connecting plate (4) through a rear tail lamp mounting plate (3), the lower end of the C column inner plate body (2) is connected with a rear wall connecting plate (7) through a D column lower connecting plate (6), the rear wall connecting plate (7), the rear tail lamp mounting plate (3) and the side wall outer plate rear connecting plate (4) are connected to form a cavity structure II, the cavity structure II is communicated with the cavity structure I to form a columnar cavity structure, and D column supporting assemblies (8) are arranged in the cavity structure I and the cavity structure II; the D column supporting component (8) comprises a D column upper supporting plate (81) connected in the cavity structure I and a D column lower supporting plate (82) connected in the cavity structure II; the rear top cross beam lower connecting plate (5) is connected with the C-column inner plate body (2) through spot welding after being spliced, and the rear top cross beam upper connecting plate (1) is connected with the outer sides of the rear top cross beam lower connecting plate (5) and the C-column inner plate body (2) through spot welding to form the cavity structure I; one end of the D column upper supporting plate (81) is connected to the splicing position of the rear top cross beam lower connecting plate (5) and the C column inner plate body (2), and the other end of the D column upper supporting plate (81) is connected with the rear top cross beam upper connecting plate (1) in a spot welding mode; a D-column reinforcing plate (9) is welded at the joint of the outer sides of the rear top beam upper connecting plate (1) and the C-column inner plate body (2), one side of the D-column reinforcing plate (9) is connected with the C-column inner plate body (2) in a lap joint mode through spot welding, and the other side of the D-column reinforcing plate (9) is connected with the rear top beam upper connecting plate (1) in a lap joint mode through spot welding.
2. The reinforcing structure for improving the torsional rigidity of the rear part of the vehicle body according to claim 1, wherein the rear wall connecting plate (7) comprises a bottom metal plate (71) and a side metal plate (72), the bottom metal plate (71) and the side metal plate (72) are respectively arranged at the bottom of the D-pillar lower connecting plate (6) and on one side of the D-pillar lower connecting plate (6), and the bottom metal plate (71), the side metal plate (72) and the side wall outer plate rear connecting plate (4) are connected in a spot welding mode.
3. The reinforcing structure for improving the torsional rigidity of the rear part of the vehicle body according to claim 2, wherein the D-pillar lower connecting plate (6) and the rear wall connecting plate (7) enclose a structure in which the D-pillar lower supporting plate (82) is arranged, and the D-pillar lower supporting plate (82) is connected with the side wall outer plate rear connecting plate (4) in a spot welding mode.
4. The reinforcing structure for improving the torsional rigidity of the rear part of the vehicle body according to any one of claims 1 to 3, wherein a gutter (10) is provided on the inner side of the rear roof rail upper connecting plate (1), the C-pillar inner panel body (2), the rear tail lamp mounting plate (3), the side wall outer panel rear connecting plate (4), the rear roof rail lower connecting plate (5) and the D-pillar lower connecting plate (6) after connection.
5. The reinforcing structure for improving the torsional rigidity of the rear part of the vehicle body according to claim 4, wherein weight-reducing holes (11) are formed in the rear top cross member lower connecting plate (5), the D-pillar lower connecting plate (6) and the rear wall connecting plate (7).
6. A method of installing a reinforcing structure for improving torsional rigidity of a rear portion of a vehicle body according to any one of claims 1 to 5, comprising the steps of:
1) the rear top cross beam lower connecting plate (5) is connected with the C column inner plate body (2) through spot welding after being spliced, and the D column upper supporting plate (81) is welded at the splicing position of the rear top cross beam lower connecting plate (5) and the C column inner plate body (2);
2) the lower end of the C-pillar inner plate body (2) is connected with the D-pillar lower connecting plate (6) in a spot welding mode, the periphery of the D-pillar lower connecting plate (6) is connected with the rear surrounding connecting plate (7) in a spot welding mode, and the D-pillar lower supporting plate (82) is connected with the D-pillar lower connecting plate (6) in a spot welding mode;
3) the rear top cross beam upper connecting plate (1) is connected to the outer sides of the rear top cross beam lower connecting plate (5) and the C column inner plate body (2) in a spot welding mode, the D column reinforcing plate (9) is welded at the connecting position of the rear top cross beam upper connecting plate (1) and the C column inner plate body (2), and the D column upper supporting plate (81) is connected to the inner side of the rear top cross beam upper connecting plate (1) in a spot welding mode to form the cavity structure I;
4) the lower extreme of back top crossbeam upper junction plate (1) is connected with back tail lamp mounting panel (3), side wall planking back connection plate (4) spot welding in proper order, with the inboard of side wall planking back connection plate (4) with D post bottom suspension fagging (82) spot welding links to each other, will back wall connection plate (7), D post bottom suspension fagging (6) with back tail lamp mounting panel (3), side wall planking back connection plate (4) spot welding are connected, form cavity structure II.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911173982.3A CN110877638B (en) | 2019-11-26 | 2019-11-26 | Reinforcing structure for improving torsional rigidity of rear part of vehicle body and mounting method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911173982.3A CN110877638B (en) | 2019-11-26 | 2019-11-26 | Reinforcing structure for improving torsional rigidity of rear part of vehicle body and mounting method thereof |
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| CN110877638A CN110877638A (en) | 2020-03-13 |
| CN110877638B true CN110877638B (en) | 2021-03-02 |
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|---|---|---|---|---|
| DE10125896B4 (en) * | 2000-05-29 | 2005-10-27 | Toyota Jidosha K.K., Toyota | Sidewall construction of a vehicle body with door longitudinal reinforcement |
| CN204037677U (en) * | 2014-08-21 | 2014-12-24 | 奇瑞汽车股份有限公司 | A kind of rear part structure of automobile body |
| CN104960579A (en) * | 2015-06-25 | 2015-10-07 | 奇瑞汽车股份有限公司 | D-column structure for automobile and D-column structure manufacturing method |
| CN107284528A (en) * | 2017-06-23 | 2017-10-24 | 奇瑞汽车股份有限公司 | A kind of top cap rear cross beam assembly, body rear end main frame and automobile |
| CN208021550U (en) * | 2018-03-15 | 2018-10-30 | 上海汽车集团股份有限公司 | Rear side closed structure with independent continuous reinforcing ring |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10023194B4 (en) * | 2000-05-11 | 2004-10-14 | Dr.Ing.H.C. F. Porsche Ag | Body structure for a motor vehicle with front strut mounts |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10125896B4 (en) * | 2000-05-29 | 2005-10-27 | Toyota Jidosha K.K., Toyota | Sidewall construction of a vehicle body with door longitudinal reinforcement |
| CN204037677U (en) * | 2014-08-21 | 2014-12-24 | 奇瑞汽车股份有限公司 | A kind of rear part structure of automobile body |
| CN104960579A (en) * | 2015-06-25 | 2015-10-07 | 奇瑞汽车股份有限公司 | D-column structure for automobile and D-column structure manufacturing method |
| CN107284528A (en) * | 2017-06-23 | 2017-10-24 | 奇瑞汽车股份有限公司 | A kind of top cap rear cross beam assembly, body rear end main frame and automobile |
| CN208021550U (en) * | 2018-03-15 | 2018-10-30 | 上海汽车集团股份有限公司 | Rear side closed structure with independent continuous reinforcing ring |
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| CN110877638A (en) | 2020-03-13 |
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