A rear quarter assembly, vehicle body and vehicle

Abstract

The present application relates to a kind of rear quarter assembly, vehicle body and vehicle, the rear quarter inner panel assembly includes rear quarter inner panel assembly and rear floor assembly, rear quarter inner panel assembly includes rear hub bag assembly, rear hub bag assembly includes rear hub bag inner panel and the inner side front reinforcement of the inner side front part of rear hub bag inner panel, rear floor assembly includes rear floor upper crossbeam connector, inner side front reinforcement is fixedly connected with rear floor upper crossbeam connector, the present application is by fixedly connecting rear floor upper crossbeam connector with inner side front reinforcement, can guarantee that rear quarter inner panel assembly and rear floor assembly form cavity structure, constitute the lower lap joint structure of side wall inner side front part force transmission structure, further make the force transmission structure of rear quarter inner panel assembly inner side upper portion and the force transmission structure of rear floor assembly effectively lap joint, guarantee the structural stability and safety of vehicle body rear quarter area, improve the torsional stiffness performance of vehicle body, further improve the comfort of vehicle body.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of automobile accessories, in particular to a rear quarter assembly, a vehicle body and a vehicle. BACKGROUND

[0002] With the rapid development of the automobile industry, safety has gradually become an important parameter of automobile performance indicators and is also the primary factor considered by the majority of car owners when purchasing a car. The body structure design needs to consider the body strength itself, the structure form of the parts themselves, the overall vehicle quality, fuel consumption and many other factors. Among them, the body structure design plays a decisive role in the development of the whole vehicle, which directly affects the safety, comfort, operability, fuel economy and other aspects of the vehicle, and is a very key link in the whole vehicle design. From the perspective of safety, the body structure directly determines the safety of the vehicle, and a good body structure can improve the rigidity and crashworthiness of the vehicle, reduce the impact force when an accident occurs, reduce the deformation of the vehicle, and protect the safety of the passengers in the vehicle.

[0003] In the related art, CN115214784A discloses a vehicle body rear quarter assembly, which includes a left rear quarter structure and a right rear quarter structure; the left rear quarter structure includes a left side C pillar, a left side D pillar, a left side upper longitudinal beam, a left side wheel cover assembly and a left side reinforcing structure; the right rear quarter structure includes a right side C pillar, a right side D pillar, a right side upper longitudinal beam, a right side wheel cover assembly and a right side reinforcing structure; the modal frequency of the left side reinforcing structure is not equal to the modal frequency of the right side reinforcing structure. This scheme avoids the close modal frequency of the two sides of the vehicle body, reduces the vibration transmission sensitivity, and provides a quiet and comfortable driving space for MPV models. CN102424070B discloses a vehicle body rear quarter assembly structure, which includes a rear quarter inner skin, a rear wheel inner bulge, a rear wheel outer bulge and a rear seat belt retractor mounting bracket reinforcing plate, and further includes a rear quarter inner skin upper reinforcing plate, a rear quarter inner skin lower reinforcing plate and a rear quarter reinforcing member. This scheme avoids excessive gap between the triangular window glass and the side cover outer skin after installation; improves the local modal stiffness and torsional stiffness of the rear quarter; and improves the mounting point stiffness of the seat belt retractor on the side cover inner skin. However, the above schemes do not consider the influence of the overall structure of the rear quarter area on the safety performance, especially the insufficient protection of the third row passengers of six or seven seat models, and also affect the torsional stiffness performance of the whole vehicle. SUMMARY

[0004] One of the purposes of the present application is to provide a rear quarter assembly to solve the problem that the overall structure design of the rear quarter area is not considered in the safety performance based on the traditional body structure design in the prior art, especially the insufficient protection of the third row passengers of six or seven seat models, which also affects the torsional stiffness performance of the whole vehicle; the second purpose is to provide a vehicle body; and the third purpose is to provide a vehicle.

[0005] To achieve the above object, the technical scheme adopted by the present application is as follows:

[0006] A rear quarter assembly, the rear quarter inner panel assembly comprises a rear quarter inner panel assembly and a rear floor assembly, the rear quarter inner panel assembly comprises a rear hub package assembly, the rear hub package assembly comprises a rear hub package inner panel and an inner front part reinforcing member arranged at the inner front part of the rear hub package inner panel, the rear floor assembly comprises a rear floor upper cross beam connecting member, the inner front part reinforcing member is fixedly connected with the rear floor upper cross beam connecting member.

[0007] The principle of the rear quarter assembly of the present application is that by fixing the rear floor upper cross beam connecting member and the inner front part reinforcing member, the cavity structure of the rear quarter inner panel assembly and the rear floor assembly is ensured, the lower lap joint structure of the front part of the side wall inner side force transmission structure is formed, and then the force transmission structure of the upper part of the inner side of the rear quarter inner panel assembly and the force transmission structure of the rear floor assembly are effectively lap jointed, the structural stability and safety of the rear quarter area of the vehicle body are ensured, the torsional stiffness performance of the vehicle body is improved, and the comfort of the vehicle body is improved.

[0008] In an embodiment of the present application, the rear hub package assembly further comprises an inner middle part reinforcing member arranged at the inner middle part of the rear hub package inner panel, and the rear floor assembly further comprises a shock absorber mounting seat support plate, the inner middle part reinforcing member is fixedly connected with the mounting seat support plate.

[0009] In an exemplary embodiment of the present application, the rear hub package assembly further comprises an inner rear part reinforcing member arranged at the inner rear part of the rear hub package inner panel, and the rear floor assembly further comprises a seat mounting reinforcing member, the inner rear part reinforcing member is fixedly connected with the seat mounting reinforcing member.

[0010] In an embodiment of the present application, the rear quarter inner panel assembly further comprises a side wall outer panel, the lower end of the side wall outer panel is lap jointed on the rear floor assembly and wrapped on the outside of the rear quarter inner panel assembly, the rear floor assembly further comprises a rear floor and a rear floor side beam connected with the side of the rear floor, the rear quarter inner panel assembly further comprises a rear door lock pin reinforcing member assembly, the rear door lock pin reinforcing member assembly comprises a side wall rocker support bracket assembly and a side wall rocker reinforcing member rear connecting member, the rear quarter rocker reinforcing member rear connecting member, the side wall rocker support bracket assembly and the front section of the rear floor side beam form a cavity.

[0011] In an embodiment of the present application, the rear wheel hub cover assembly further comprises a rear wheel drum cover outer plate fixedly connected with the outer edge of the rear wheel hub cover inner plate, the side wall rear upper inner plate assembly further comprises a CD pillar outer plate middle connecting piece and a side wall rear upper inner plate and a side wall rear lower inner plate reinforcing piece fixedly connected with two ends of the CD pillar outer plate middle connecting piece, the side wall rear upper inner plate is arranged above the rear wheel hub cover assembly and connected with the rear wheel hub cover assembly, and the side wall rear inner plate reinforcing piece is fixedly connected with the side wall rear lower inner plate reinforcing piece, the side wall rear upper inner plate, the CD pillar outer plate middle connecting piece and the inner rear reinforcing piece.

[0012] In an embodiment of the present application, the rear wheel hub cover assembly further comprises a rear wheel drum cover outer plate front connecting plate connected with the front end of the rear wheel drum cover outer plate, the rear wheel drum cover outer plate, the rear wheel drum cover outer plate front connecting plate, the rear door lock catch reinforcing piece, the side wall rocker reinforcing piece rear connecting plate, the side wall rear upper inner plate, the side wall rear lower inner plate reinforcing piece and the side wall outer plate enclose the C pillar.

[0013] In an embodiment of the present application, the D pillar assembly further comprises a side wall rear inner plate reinforcing piece, and the side wall rear lower inner plate reinforcing piece is fixedly connected with the side wall rear upper inner plate, the CD pillar outer plate middle connecting piece, the inner rear reinforcing piece and the side wall rear inner plate reinforcing piece in sequence.

[0014] In an embodiment of the present application, the rear side wall assembly further comprises a roof rear cross beam assembly, the D pillar assembly further comprises a D pillar inner plate and a D pillar outer plate fixedly connected with the D pillar inner plate, the D pillar inner plate comprises a D pillar inner plate middle section located at the middle part thereof, the D pillar outer plate comprises a D pillar outer plate middle section located at the middle part thereof, and the D pillar inner plate middle section, the D pillar outer plate middle section and the roof rear cross beam assembly enclose a cavity.

[0015] In an embodiment of the present application, the rear side wall assembly further comprises a rear apron assembly, the lower part of one side of the rear apron assembly is overlapped with the rear floor assembly, and the rear apron assembly is fixedly connected with the D pillar inner plate middle section and the D pillar outer plate middle section.

[0016] In an embodiment of the present application, the D pillar assembly further comprises a roof rear cross beam support plate and a roof rear cross beam connecting plate, and the roof rear cross beam support plate is fixedly connected with the roof rear cross beam connecting plate, the side wall rear upper inner plate and the side wall outer plate.

[0017] In an embodiment of the present application, the present application provides a vehicle body, which comprises the rear side wall assembly as described above.

[0018] In an embodiment of the present application, the present application provides a vehicle, which comprises the vehicle body as described above.

[0019] The present application has the following beneficial effects:

[0020] The application can guarantee that the rear side wall inner plate assembly and the rear floor assembly form a cavity structure, constitute the lower lap joint structure of the side wall inner side front part, middle part and rear part force transmission structure, form three force transmission paths, and then effectively lap joint the force transmission structure of the upper part of the rear side wall inner plate assembly and the force transmission structure of the rear floor assembly, guarantee the structural stability and safety of the rear side wall area of the vehicle body, improve the torsional stiffness performance of the vehicle body, and then improve the comfort of the vehicle body. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is a schematic view of the connection of the rear side wall assembly with the rear floor assembly, the rear apron assembly and the rear cross beam assembly of the roof (the view of the inside axis of the vehicle);

[0022] Figure 2 It is a schematic view of the connection of the rear side wall assembly with the side wall outer plate, the rear floor assembly, the rear apron assembly, the rear cross beam assembly of the roof (the view of the outside axis of the vehicle);

[0023] Figure 3 It is a schematic view of the connection of the rear side wall assembly with the rear floor assembly, the rear apron assembly, the rear cross beam assembly of the roof (the view of the outside axis of the vehicle);

[0024] Figure 4 It is a schematic view of the structure of the rear side wall assembly;

[0025] Figure 5 It is a schematic view of the structure of the rear hub package assembly;

[0026] Figure 6 It is a schematic view of the structure of the rear hub package inner plate;

[0027] Figure 7 It is a schematic view of the structure of the inner side front part reinforcing member;

[0028] Figure 8 It is a schematic view of the structure of the inner side middle part reinforcing member;

[0029] Figure 9 It is a schematic view of the structure of the inner side rear part reinforcing member;

[0030] Figure 10 It is a schematic view of the structure of the rear hub package outer plate;

[0031] Figure 11 It is a schematic view of the structure of the rear door lock pin reinforcing member assembly;

[0032] Figure 12 It is a schematic view of the structure of the rear door lock catch reinforcing member;

[0033] Figure 13Structure diagram of rear connecting plate of side wall rocker reinforcement;

[0034] Figure 14 Structure diagram of rear upper inner plate assembly of side wall;

[0035] Figure 15 Structure diagram of rear upper inner plate of side wall;

[0036] Figure 16 Structure diagram of middle connecting piece of CD pillar outer plate;

[0037] Figure 17 Structure diagram of rear lower inner plate reinforcement of side wall;

[0038] Figure 18 Structure diagram of D pillar assembly;

[0039] Figure 19 Structure diagram of rear roof cross beam support plate of roof;

[0040] Figure 20 Structure diagram of rear roof cross beam connecting plate of roof;

[0041] Figure 21 Structure diagram of rear inner plate reinforcement of side wall;

[0042] Figure 22 Structure diagram of middle section of D pillar inner plate;

[0043] Figure 23 Structure diagram of rear floor assembly;

[0044] Figure 24 Structure diagram of front section of rear floor side rail;

[0045] Figure 25 Structure diagram of rear floor upper cross beam connecting piece;

[0046] Figure 26 Structure diagram of shock absorber mounting seat support plate;

[0047] Figure 27 Structure diagram of seat mounting reinforcement;

[0048] Figure 28 Structure diagram of front force transmission structure;

[0049] Figure 29 Structure diagram of rear force transmission structure;

[0050] 1-rear side wall inner plate assembly;

[0051] 11-rear hub bag assembly;

[0052] 111-rear hub bag inner plate;

[0053] 1111 - primary positioning hole, 1112 - first lap surface of rear wheel bulge inner plate, 1113 - second lap surface of rear wheel bulge inner plate, 1114 - third lap surface of rear wheel bulge inner plate, 1115 - fourth lap surface of rear wheel bulge inner plate, 1116 - secondary positioning hole, 1117 - positioning via hole, 1118 - fifth lap surface of rear wheel bulge inner plate, 1119 - sixth lap surface of rear wheel bulge inner plate, 1120 - seventh lap surface of rear wheel bulge inner plate;

[0054] 112 - inner front reinforcement;

[0055] 1121 - first lap surface of inner front reinforcement, 1122 - second lap surface of inner front reinforcement, 1123 - welding via hole of inner front reinforcement, 1124 - third lap surface of inner front reinforcement, 1125 - fourth lap surface of inner front reinforcement, 1126 - first mounting nut hole of inner front reinforcement, 1127 - first mounting nut hole of inner front reinforcement, 1128 - fifth lap surface of inner front reinforcement, 1129 - sixth lap surface of inner front reinforcement, 1130 - seventh lap surface of inner front reinforcement;

[0056] 113 - inner middle reinforcement;

[0057] 1131 - first lap surface of inner middle reinforcement, 1132 - second lap surface of inner middle reinforcement, 1132 - third lap surface of inner middle reinforcement, 1132 - fourth lap surface of inner middle reinforcement, 1133 - fifth lap surface of inner middle reinforcement, 1134 - sixth lap surface of inner middle reinforcement, 1135 - welding via hole of inner middle reinforcement, 1136 - seventh lap surface of rear inner middle reinforcement, 1137 - eighth lap surface of inner middle reinforcement, 1138 - first mounting nut hole of inner middle reinforcement, 1139 - second mounting nut hole of inner middle reinforcement;

[0058] 114 - inner rear reinforcement;

[0059] 1141 - first lap surface of inner rear reinforcement, 1142 - second lap surface of inner rear reinforcement, 1143 - mounting nut hole of inner rear reinforcement, 1144 - third lap surface of inner rear reinforcement, 1145 - fourth lap surface of inner rear reinforcement, 1146 - fifth lap surface of inner rear reinforcement, 1147 - sixth lap surface of inner rear reinforcement, 1148 - welding via hole of inner rear reinforcement, 1149 - seventh lap surface of inner rear reinforcement, 1150 - eighth lap surface of inner rear reinforcement;

[0060] 115 - rear wheel bulge outer plate;

[0061] 1151 - first lap joint surface of rear wheel bulge outer plate, 1152 - second lap joint surface of rear wheel bulge outer plate, 1153 - third lap joint surface of rear wheel bulge outer plate, 1154 - fourth lap joint surface of rear wheel bulge outer plate, 1155 - fifth lap joint surface of rear wheel bulge outer plate, 1156 - oil filler mounting hole, 1157 - sixth lap joint surface of rear wheel bulge outer plate, 1158 - seventh lap joint surface of rear wheel bulge outer plate, 1159 - eighth lap joint surface of rear wheel bulge outer plate;

[0062] 116 - rear wheel bulge inner plate front connecting plate;

[0063] 12 - rear door lock pin reinforcement assembly;

[0064] 121 - rear door lock catch reinforcement;

[0065] 1211 - first lap joint surface of rear door lock catch reinforcement, 1212 - rear door lock mounting through hole, 1213 - second lap joint surface of rear door lock catch reinforcement, 1214 - blocking glue mounting hole, 1215 - third lap joint surface of rear door lock catch reinforcement, 1216 - fourth lap joint surface of rear door lock catch reinforcement, 1217 - electrophoresis hole, 1218 - fifth lap joint surface of rear door lock catch reinforcement, 1219 - sixth lap joint surface of rear door lock catch reinforcement;

[0066] 122 - side wall door sill reinforcement rear connecting plate;

[0067] 1221 - first lap joint surface of side wall door sill reinforcement rear connecting plate, 1222 - second lap joint surface of side wall door sill reinforcement rear connecting plate, 1223 - third lap joint surface of side wall door sill reinforcement rear connecting plate, 1224 - fourth lap joint surface of side wall door sill reinforcement rear connecting plate, 1225 - fifth lap joint surface of side wall door sill reinforcement rear connecting plate;

[0068] 123 - side wall door sill support bracket welding assembly;

[0069] 124 - front door lock pin nut plate;

[0070] 13 - side wall rear upper inner plate assembly;

[0071] 131 - side wall rear upper inner plate;

[0072] 1311 - first lap joint surface of side wall rear upper inner plate, 1312 - second lap joint surface of side wall rear upper inner plate, 1313 - third lap joint surface of side wall rear upper inner plate, 1314 - side wall rear upper inner plate welding through hole, 1315 - fourth lap joint surface of side wall rear upper inner plate, 1316 - fifth lap joint surface of side wall rear upper inner plate, 1317 - sixth lap joint surface of side wall rear upper inner plate, 1318 - seventh lap joint surface of side wall rear upper inner plate, 1319 - eighth lap joint surface of side wall rear upper inner plate;

[0073] 132 - CD pillar outer plate middle connecting piece;

[0074] 1321 - first lap face of CD pillar outer plate middle connector, 1322 - second lap face of CD pillar outer plate middle connector, 1323 - third lap face of CD pillar outer plate middle connector, 1324 - fourth lap face of CD pillar outer plate middle connector, 1325 - fifth lap face of CD pillar outer plate middle connector, 1326 - sixth lap face of CD pillar outer plate middle connector, 1327 - welding through hole of CD pillar outer plate middle connector;

[0075] 133 - rear lower inner side panel reinforcement;

[0076] 1331 - first lap face of rear lower inner side panel reinforcement, 1332 - second lap face of rear lower inner side panel reinforcement, 1333 - first welding through hole of rear lower inner side panel reinforcement, 1334 - third lap face of rear lower inner side panel reinforcement, 1335 - second welding through hole of rear lower inner side panel reinforcement, 1336 - fourth lap face of rear lower inner side panel reinforcement, 1337 - fifth lap face of rear lower inner side panel reinforcement, 1338 - sixth lap face of rear lower inner side panel reinforcement, 1339 - third welding through hole of rear lower inner side panel reinforcement, 1340 - seventh lap face of rear lower inner side panel reinforcement;

[0077] 14 - D pillar assembly;

[0078] 141 - rear roof cross beam support plate;

[0079] 1411 - first lap face of rear roof cross beam support plate, 1412 - second lap face of rear roof cross beam support plate, 1413 - welding through hole of rear roof cross beam support plate, 1414 - third lap face of rear roof cross beam support plate, 1415 - first mounting hole of rear roof cross beam support plate, 1416 - second mounting hole of rear roof cross beam support plate, 1417 - pre-hung bolt hole of rear roof cross beam support plate, 1418 - fourth lap face of rear roof cross beam support plate, 1419 - fifth lap face of rear roof cross beam support plate;

[0080] 142 - rear roof cross beam connecting plate;

[0081] 1421 - first lap face of rear roof cross beam connecting plate, 1422 - back door hinge mounting hole, 1423 - second lap face of rear roof cross beam connecting plate, 1424 - back door limiter mounting hole, 1425 - third lap face of rear roof cross beam connecting plate, 1426 - fourth lap face of rear roof cross beam connecting plate;

[0082] 143 - rear inner side panel reinforcement;

[0083] 1431 - first overlap face of side wall rear inner panel reinforcement, 1432 - second overlap face of side wall rear inner panel reinforcement, 1433 - weld through hole of side wall rear inner panel reinforcement, 1434 - third overlap face of side wall rear inner panel reinforcement, 1435 - fourth overlap face of side wall rear inner panel reinforcement;

[0084] 144 - middle section of D-pillar inner panel;

[0085] 1441 - first overlap face of middle section of D-pillar inner panel, 1442 - second overlap face of middle section of D-pillar inner panel, 1443 - third overlap face of middle section of D-pillar inner panel, 1444 - fourth overlap face of middle section of D-pillar inner panel;

[0086] 145 - middle section of D-pillar outer panel;

[0087] 2 - side wall outer panel;

[0088] 3 - rear apron assembly;

[0089] 4 - rear floor assembly;

[0090] 41 - front section of rear floor rocker;

[0091] 411 - first overlap face of front section of rear floor rocker, 412 - second overlap face of front section of rear floor rocker, 413 - third overlap face of front section of rear floor rocker, 414 - fourth overlap face of front section of rear floor rocker, 415 - plug weld hole of front section of rear floor rocker, 416 - fifth overlap face of front section of rear floor rocker;

[0092] 42 - rear floor cross member attachment;

[0093] 421 - first overlap face of rear floor cross member attachment, 422 - first mounting through hole of rear floor cross member attachment, 423 - second overlap face of rear floor cross member attachment, 424 - second mounting through hole of rear floor cross member attachment, 425 - third overlap face of rear floor cross member attachment, 426 - fourth overlap face of rear floor cross member attachment, 427 - fifth overlap face of rear floor cross member attachment;

[0094] 43 - shock tower support plate;

[0095] 431 - first overlap face of shock tower support plate, 432 - first mounting through hole of shock tower support plate, 433 - second overlap face of shock tower support plate, 434 - second mounting through hole of shock tower support plate, 435 - third overlap face of shock tower support plate, 436 - weld through hole of shock tower support plate, 437 - shock mounting hole, 438 - shock mounting through hole;

[0096] 44 - seat mounting reinforcement;

[0097] 441 - first lap joint face of seat mount reinforcement, 442 - second lap joint face of seat mount reinforcement, 443 - seat mount via, 444 - third lap joint face of seat mount reinforcement, 445 - fourth lap joint face of seat mount reinforcement, 446 - fifth lap joint face of seat mount reinforcement, 447 - seat mount reinforcement mounting via;

[0098] 5 - bolt;

[0099] 6 - roof rear cross member assembly. DETAILED DESCRIPTION

[0100] Other advantages and effects of the present application will be apparent to those skilled in the art from the disclosure herein. The present application can be implemented or applied in other different specific embodiments, and the details in the present specification can be modified or changed based on different views and applications without departing from the spirit of the present application. It should be understood that the preferred embodiments are only for illustrating the present application, but not for limiting the protection scope of the present application.

[0101] It should be noted that the drawings provided in the following embodiments only schematically illustrate the basic concept of the present application, and only the components related to the present application are shown in the drawings, but not drawn according to the number, shape and size of the components in actual implementation. The type, number and proportion of each component in actual implementation can be arbitrarily changed, and the layout type of the components can be more complex.

[0102] It should be noted that all directional indications (such as up, down) in the embodiments of the present application are only used to explain the relative position relationship, movement condition and the like between components in a certain specific posture (as shown in the drawings), and if the specific posture changes, the directional indications will also change accordingly. Among them, front and rear are defined with the vehicle body as the relative reference, for example, the front part refers to the part close to the vehicle head.

[0103] In the present application, unless otherwise explicitly specified and limited, the terms "connection", "fixation" and the like should be understood broadly, for example, "fixation" can be fixed connection, or detachable connection, or integral; can be mechanical connection, or electrical connection; can be direct connection, or indirect connection through intermediate medium; can be internal communication of two elements or interaction relationship between two elements, unless otherwise explicitly limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0104] In addition, the description such as "first", "second", "third", "fourth", "fifth", "sixth", "seventh" in the present application are only for descriptive purpose and can not be understood as indicating or implying relative importance or implying the number of the technical features indicated. Therefore, the features defined as "first", "second", "third", "fourth", "fifth", "sixth", "seventh" can be explicitly or implicitly included at least one of the features. In addition, the meaning of "and / or" appearing throughout the text is to include three parallel solutions, for example, "A and / or B" includes A solution, or B solution, or A and B solution. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the realization of the ordinary skilled in the art, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, nor in the protection scope required by the present application.

[0105] In the related art, the overall structure design of the rear side wall area does not consider the influence on the safety performance, especially the protection of the third row passengers of six or seven seat vehicles, and also affects the torsional stiffness performance of the whole vehicle. In view of the above problems, the present application provides a rear side wall inner plate assembly.

[0106] Please refer to Figures 1 to 3 In an embodiment of the present application, the rear side wall assembly includes a rear side wall inner plate assembly 1, a side wall outer plate 2, a rear apron assembly 3, a rear floor assembly 4 and a roof rear cross beam assembly 6.

[0107] Please refer to Figure 4 The rear side wall inner plate assembly 1 includes a rear hub bag assembly 11, a rear door lock pin reinforcement assembly 12, a side wall rear upper inner plate assembly 13 and a D column assembly 14.

[0108] Please refer to Figure 5 The rear hub bag assembly 11 includes a rear hub bag inner plate 111, a rear hub bag outer plate 115 and a rear hub bag inner plate front connecting plate 116 fixedly connected with the front end of the rear hub bag outer plate 115, and the inner side front part, the inner side middle part and the inner side rear part of the rear hub bag inner plate 111 are respectively provided with an inner side front part reinforcement 112, an inner side middle part reinforcement 113 and an inner side rear part reinforcement 114.

[0109] Please refer to Figure 6 The rear hub bag inner plate 111 is provided with a main positioning hole 1111, a rear hub bag inner plate first lap joint surface 1112, a rear hub bag inner plate second lap joint surface 1113, a rear hub bag inner plate third lap joint surface 1114, a rear hub bag inner plate fourth lap joint surface 1115, a secondary positioning hole 1116, a positioning via hole 1117, a rear hub bag inner plate fifth lap joint surface 1118, a rear hub bag inner plate sixth lap joint surface 1119 and a rear hub bag inner plate seventh lap joint surface 1120.

[0110] Referring to Figure 7 The inner front reinforcement 112 is provided with an inner front reinforcement first lap joint surface 1121, an inner front reinforcement second lap joint surface 1122, an inner front reinforcement welding through hole 1123, an inner front reinforcement third lap joint surface 1124, an inner front reinforcement fourth lap joint surface 1125, an inner front reinforcement first mounting nut hole 1126, an inner front reinforcement first mounting nut hole 1127, an inner front reinforcement fifth lap joint surface 1128, an inner front reinforcement sixth lap joint surface 1129, and an inner front reinforcement seventh lap joint surface 1130. The inner front reinforcement third lap joint surface 1124 is in close contact with the rear wheel bulge inner plate first lap joint surface 1112 and is fixedly connected. The inner front reinforcement welding through hole 1123 is used for the welding of the rear wheel bulge outer plate 115 and the side rear upper inner plate 131 of the side rear upper inner plate assembly 13.

[0111] Referring to Figure 8 The inner front reinforcement 112 is provided with an inner front reinforcement first lap joint surface 1121, an inner front reinforcement second lap joint surface 1122, an inner front reinforcement welding through hole 1123, an inner front reinforcement third lap joint surface 1124, an inner front reinforcement fourth lap joint surface 1125, an inner front reinforcement first mounting nut hole 1126, an inner front reinforcement first mounting nut hole 1127, an inner front reinforcement fifth lap joint surface 1128, an inner front reinforcement sixth lap joint surface 1129, and an inner front reinforcement seventh lap joint surface 1130. The inner front reinforcement third lap joint surface 1124 is in close contact with the rear wheel bulge inner plate first lap joint surface 1112 and is fixedly connected. The inner front reinforcement welding through hole 1123 is used for the welding of the rear wheel bulge outer plate 115 and the side rear upper inner plate 131 of the side rear upper inner plate assembly 13.

[0112] Referring to Figure 9The inner rear reinforcement 114 is provided with an inner rear reinforcement first lap joint surface 1141, an inner rear reinforcement second lap joint surface 1142, an inner rear reinforcement mounting nut hole 1143, an inner rear reinforcement third lap joint surface 1144, an inner rear reinforcement fourth lap joint surface 1145, an inner rear reinforcement fifth lap joint surface 1146, an inner rear reinforcement sixth lap joint surface 1147, an inner rear reinforcement welding through hole 1148, an inner rear reinforcement seventh lap joint surface 1149, and an inner rear reinforcement eighth lap joint surface 1150. The inner rear reinforcement welding through hole 1148 is used as a welding tool avoiding channel when the two layers of welding points of the rear wheel hub bag assembly 11 and the inner rear reinforcement 114 are connected. The inner rear reinforcement first lap joint surface 1141 is attached to the rear wheel hub bag inner plate fifth lap joint surface 1118 and fixedly connected; the inner rear reinforcement second lap joint surface 1142 is attached to the rear wheel hub bag inner plate sixth lap joint surface 1119 and fixedly connected; the inner rear reinforcement fourth lap joint surface 1145 is attached to the rear wheel hub bag inner plate sixth lap joint surface 1119 and fixedly connected; the inner rear reinforcement fifth lap joint surface 1146 is attached to the rear wheel hub bag inner plate fourth lap joint surface 1115 and fixedly connected; the inner rear reinforcement sixth lap joint surface 1147 is attached to the rear wheel hub bag inner plate fourth lap joint surface 1115 and the inner rear reinforcement fifth lap joint surface 1137 and fixedly connected; the inner rear reinforcement seventh lap joint surface 1149 is attached to the inner rear reinforcement fifth lap joint surface 1134 and fixedly connected; and the inner rear reinforcement eighth lap joint surface 1150 is attached to the rear wheel hub bag inner plate fourth lap joint surface 1115 and the inner rear reinforcement seventh lap joint surface 1137 and fixedly connected.

[0113] Specifically, by connecting the inner rear reinforcement 114 with the rear wheel hub bag inner plate 111 and the inner rear reinforcement 114, a cavity structure can be formed, constituting a lower second lap joint complete structure of the side wall inner rear force transmission structure. By connecting the inner rear reinforcement 114 with the rear wheel hub bag inner plate 111, the inner rear reinforcement 114, and the inner rear reinforcement 114, a cavity structure can be formed, constituting a lower second lap joint complete structure of the side wall inner rear force transmission structure.

[0114] Please refer to Figure 10The rear wheel bulge outer plate 115 is provided with a rear wheel bulge outer plate first lap joint surface 1151, a rear wheel bulge outer plate second lap joint surface 1152, a rear wheel bulge outer plate third lap joint surface 1153, a rear wheel bulge outer plate fourth lap joint surface 1154, a rear wheel bulge outer plate fifth lap joint surface 1155, a filler neck mounting hole 1156, a rear wheel bulge outer plate sixth lap joint surface 1157, a rear wheel bulge outer plate seventh lap joint surface 1158, and a rear wheel bulge outer plate eighth lap joint surface 1159. The rear wheel bulge outer plate eighth lap joint surface 1159 is attached to and fixedly connected with the inner front portion reinforcing member first lap joint surface 1121.

[0115] Referring to Figure 11 The rear door lock pin reinforcing member assembly 12 includes a rear door lock catch reinforcing member 121, a side wall rocker reinforcing member rear connecting plate 122, a side wall rocker support bracket welding assembly 123, and a front door lock pin nut 124.

[0116] Referring to Figure 12 The rear door lock catch reinforcing member 121 is provided with a 1211, a rear door lock catch reinforcing member first lap joint surface 1212, a rear door lock mounting through hole 1213, a rear door lock catch reinforcing member second lap joint surface 1214, a barrier glue mounting hole 1215, a rear door lock catch reinforcing member third lap joint surface 1216, a rear door lock catch reinforcing member fourth lap joint surface 1217, an electrophoresis hole 1218, a rear door lock catch reinforcing member fifth lap joint surface, and a rear door lock catch reinforcing member sixth lap joint surface 1129. The rear door lock catch reinforcing member second lap joint surface 1213 is attached to and fixedly connected with the rear wheel bulge outer plate first lap joint surface 1151. The rear door lock catch reinforcing member fourth lap joint surface 1216 is attached to and fixedly connected with the rear wheel bulge outer plate third lap joint surface 1153. The rear door lock catch reinforcing member fifth lap joint surface 1218 is attached to and fixedly connected with the rear wheel bulge outer plate fourth lap joint surface 1154.

[0117] Referring to Figure 13 The edge of the side wall rocker reinforcing member rear connecting plate 122 is provided with a reinforcing member rear connecting plate first lap joint surface 1221, a reinforcing member rear connecting plate second lap joint surface 1222, a reinforcing member rear connecting plate third lap joint surface 1223, a reinforcing member rear connecting plate fourth lap joint surface 1224, and a reinforcing member rear connecting plate fifth lap joint surface 1225. The rear door lock catch reinforcing member second lap joint surface 1213 is attached to and fixedly connected with the rear wheel bulge outer plate first lap joint surface 1151 and the side wall rocker reinforcing member rear connecting plate first lap joint surface 1221. The side wall rocker reinforcing member rear connecting plate fourth lap joint surface 1225 is attached to and fixedly connected with the rear door lock catch reinforcing member third lap joint surface 1215. The side wall rocker reinforcing member rear connecting plate fourth lap joint surface 1224 is attached to and fixedly connected with the rear wheel bulge outer plate third lap joint surface 1153 and the rear door lock catch reinforcing member fourth lap joint surface 1216.

[0118] Referring to Figure 14The side wall rear upper inner plate assembly 13 comprises a side wall rear upper inner plate 131, a CD column outer plate middle connecting piece 132 and a side wall rear lower inner plate reinforcing piece 133. The two ends of the CD column outer plate middle connecting piece 132 are fixedly connected with the side wall rear upper inner plate 131 and the side wall rear lower inner plate reinforcing piece 133 respectively.

[0119] Please refer to Figure 15 The side wall rear upper inner plate 131 is provided with a side wall rear upper inner plate first lap joint surface 1311, a side wall rear upper inner plate second lap joint surface 1312, a side wall rear upper inner plate third lap joint surface 1313, a side wall rear upper inner plate welding through hole 1314, a side wall rear upper inner plate fourth lap joint surface 1315, a side wall rear upper inner plate fifth lap joint surface 1316, a side wall rear upper inner plate sixth lap joint surface 1317, a side wall rear upper inner plate seventh lap joint surface 1318 and a side wall rear upper inner plate eighth lap joint surface 1319.

[0120] Please refer to Figure 16 The CD column outer plate middle connecting piece 132 is provided with a CD column outer plate middle connecting piece first lap joint surface 1321, a CD column outer plate middle connecting piece second lap joint surface 1322, a CD column outer plate middle connecting piece third lap joint surface 1323, a CD column outer plate middle connecting piece fourth lap joint surface 1324, a CD column outer plate middle connecting piece fifth lap joint surface 1325, a CD column outer plate middle connecting piece sixth lap joint surface 1326 and a CD column outer plate middle connecting piece welding through hole 1327. The inner side middle reinforcing piece fourth lap joint surface 1134 is in abutment with the side wall rear upper inner plate fifth lap joint surface 1316 and the CD column outer plate middle connecting piece sixth lap joint surface 1326, and is fixedly connected; the inner side middle reinforcing piece sixth lap joint surface 1136 is in abutment with the side wall rear upper inner plate fifth lap joint surface 1316 and the CD column outer plate middle connecting piece fourth lap joint surface 1324, and is fixedly connected. The CD column outer plate middle connecting piece sixth lap joint surface 1326 is in abutment with the side wall rear inner plate reinforcing piece first lap joint surface 1431 and the side wall rear upper inner plate fifth lap joint surface 1316, and is fixedly connected.

[0121] Specifically, by connecting the inner side middle reinforcing piece 113 with the rear wheel drum bump inner plate 111, the side wall rear upper inner plate 131 and the CD column outer plate middle connecting piece 132, the cavity structure formed by the rear wheel hub assembly 11 and the side wall rear upper inner plate assembly 13 is ensured, and the upper middle section lap joint structure of the side wall inner side rear transmission structure is constituted.

[0122] Please refer to Figure 17The rear lower inner side panel reinforcement 133 is provided with a first lap joint surface 1331, a second lap joint surface 1332, a first welding through hole 1333, a third lap joint surface 1334, a second welding through hole 1335, a fourth lap joint surface 1336, a fifth lap joint surface 1337, a sixth lap joint surface 1338, a third welding through hole 1339, and a seventh lap joint surface 1340. The first welding through hole 1333 and the third welding through hole 1339 serve as a welding tool avoiding channel when the three-layer welding joint of the rear wheel hub cover assembly 11, the rear wheel hub cover inner panel 111, the inner front reinforcement 112, and the rear upper inner side panel 131 of the rear upper inner side panel assembly 13 is connected. The second welding through hole 1335 serves as a welding tool avoiding channel when the two-layer welding joint of the rear wheel hub cover assembly 11, the rear wheel hub cover inner panel 111, and the inner front reinforcement 112 is connected. The second lap joint surface 1332 is connected with the first lap joint surface 1121 of the inner front reinforcement and the second lap joint surface 1312 of the rear upper inner side panel, and is fixedly connected. The second lap joint surface 1312 of the rear upper inner side panel is connected with the first lap joint surface 1121 of the inner front reinforcement and the eighth lap joint surface 1159 of the rear wheel hub cover outer panel, and is fixedly connected. The second lap joint surface 1312 of the rear upper inner side panel is connected with the second lap joint surface 1122 of the inner front reinforcement (for example, connected by structural adhesive). The second lap joint surface 1332 of the rear lower inner side panel reinforcement is connected with the first lap joint surface 1151 of the rear wheel hub cover outer panel and the first lap joint surface 1211 of the rear door lock reinforcement, and is fixedly connected; the fourth lap joint surface 1336 of the rear lower inner side panel reinforcement is connected with the fourth lap joint surface 1154 of the rear wheel hub cover outer panel and the fifth lap joint surface 1218 of the rear door lock reinforcement, and is fixedly connected; the fifth lap joint surface 1337 of the rear lower inner side panel reinforcement is connected with the fourth lap joint surface 1154 of the rear wheel hub cover outer panel, and is fixedly connected; the fifth lap joint surface 1155 of the rear wheel hub cover outer panel is connected with the sixth lap joint surface 1338 of the rear lower inner side panel reinforcement, and is fixedly connected; the third lap joint surface 1334 of the rear lower inner side panel reinforcement is connected with the sixth lap joint surface 1219 of the rear door lock reinforcement, and is fixedly connected. The first lap joint surface 1311 of the rear upper inner side panel is connected with the second lap joint surface 1332 of the rear lower inner side panel reinforcement and the side outer panel 2, and is fixedly connected; the fourth lap joint surface 1315 of the rear upper inner side panel is connected with the seventh lap joint surface 1340 of the rear lower inner side panel reinforcement and the side outer panel 2, and is fixedly connected; and the eighth lap joint surface 1319 of the rear upper inner side panel is connected with the first lap joint surface 1331 of the rear lower inner side panel reinforcement and the side outer panel 2, and is fixedly connected.The third lap joint surface 1114 of the rear wheel bulge inner plate is attached to the seventh lap joint surface 1158 of the rear wheel bulge outer plate and the third lap joint surface 1313 of the rear upper inner plate, and is fixedly connected; the first lap joint surface 1321 of the middle connecting plate of the CD column outer plate is attached to the fourth lap joint surface 1315 of the rear upper inner plate and the side outer plate 2, and is fixedly connected; the third lap joint surface 1313 of the rear upper inner plate is attached to the second lap joint surface 1322 of the middle connecting plate of the CD column outer plate and the sixth lap joint surface 1338 of the rear lower inner plate reinforcement, and is fixedly connected; the third lap joint surface 1313 of the rear upper inner plate is attached to the second lap joint surface 1322 of the middle connecting plate of the CD column outer plate, and is fixedly connected. The first lap joint surface 1311 of the rear upper inner plate is attached to the second lap joint surface 1332 of the rear lower inner plate reinforcement and the side outer plate 2, and is fixedly connected; the fourth lap joint surface 1315 of the rear upper inner plate is attached to the seventh lap joint surface 1340 of the rear lower inner plate reinforcement and the side outer plate 2, and is fixedly connected; the eighth lap joint surface 1319 of the rear upper inner plate is attached to the first lap joint surface 1331 of the rear lower inner plate reinforcement and the side outer plate 2, and is fixedly connected.

[0123] Specifically, by connecting the rear wheel bulge inner plate 111 with the rear wheel bulge outer plate 115, the rear upper inner plate 131, connecting the middle connecting plate 132 of the CD column outer plate with the rear upper inner plate 131 and the side outer plate 2, connecting the rear upper inner plate 131 with the middle connecting plate 132 of the CD column outer plate and the rear lower inner plate reinforcement 133, and connecting the rear upper inner plate 131 with the middle connecting plate 132 of the CD column outer plate, a rear side inner plate rear transmission structure can be formed, which constitutes a transverse connection structure from the C column to the D column of the vehicle body, ensures the stability of the rear side inner plate structure, effectively improves the collision safety of the third row passenger area, and ensures the safety of the third row passengers. By enclosing the C column with the rear wheel bulge outer plate 115, the rear wheel bulge outer plate front connecting plate 116, the rear door lock reinforcement 121, the rear side sill reinforcement connecting plate 122, the rear upper inner plate 131, the rear lower inner plate reinforcement 133, and the side outer plate 2, the stable connection of the sill and the rear side can be ensured, the effective transmission of force can be ensured, and the stability and safety of the vehicle body structure can be ensured.

[0124] Please refer to Figure 18 The D column assembly 14 includes a roof rear cross beam support plate 141, a roof rear cross beam connecting plate 142, a rear inner plate reinforcement 143, a D column inner plate, and a D column outer plate fixedly installed on the D column inner plate. The D column outer plate includes a D column outer plate middle section 145 located in the middle.

[0125] Please refer to Figure 19The rear crossbeam support plate 141 is provided with a first overlapping surface 1411, a second overlapping surface 1412, a welding through hole 1413, a third overlapping surface 1414, a first mounting hole 1415, a second mounting hole 1416, a pre-mounted bolt hole 1417, a fourth overlapping surface 1418, and a fifth overlapping surface 1419. The first overlapping surface 1411 of the rear crossbeam support plate is fitted and fixedly connected to the fourth overlapping surface 1426 of the rear crossbeam connecting plate and the seventh overlapping surface 1318 of the upper inner panel of the side wall.

[0126] Please see Figure 20 The rear crossbeam connecting plate 142 of the top cover is provided with a first overlapping surface 1421, a rear door hinge mounting hole 1422, a second overlapping surface 1423, a rear door limiter mounting hole 1424, a third overlapping surface 1425, and a fourth overlapping surface 1426. The second overlapping surface 1423, the fourth overlapping surface 1418, and the outer side panel 2 are attached and fixedly connected.

[0127] Please see Figure 21The rear side inner panel reinforcement 143 is provided with a rear side inner panel reinforcement first lap joint surface 1431, a rear side inner panel reinforcement second lap joint surface 1432, a rear side inner panel reinforcement welding through hole 1433, a rear side inner panel reinforcement third lap joint surface 1434, and a rear side inner panel reinforcement fourth lap joint surface 1435. The rear side inner panel reinforcement welding through hole 1433 is used as a welding tool avoiding passage when the three layers of welding points of the rear upper side inner panel 131 of the rear upper side inner panel assembly 13, the CD column outer panel middle connecting plate 132, and the roof rear cross beam support plate 141 of the D column assembly 14 are connected. The rear side inner panel reinforcement first lap joint surface 1431 is attached to the roof rear cross beam support plate first lap joint surface 1411 and the roof rear cross beam connecting plate fourth lap joint surface 1426, and is fixedly connected (for example, by bolt connection). The rear side inner panel reinforcement second lap joint surface 1432 is attached to the roof rear cross beam support plate second lap joint surface 1412, and is fixedly connected. The rear side inner panel reinforcement third lap joint surface 1434 is attached to the roof rear cross beam support plate first lap joint surface 1411 and the roof rear cross beam connecting plate fourth lap joint surface 1426, and is fixedly connected; the rear side inner panel reinforcement third lap joint surface 1434 is attached to the rear upper side inner panel fifth lap joint surface 1316 and the CD column outer panel middle connecting plate fourth lap joint surface 1324, and is fixedly connected; the rear side inner panel reinforcement first lap joint surface 1431 is attached to the rear upper side inner panel fifth lap joint surface 1316 and the inner middle reinforcement fourth lap joint surface 1133, and is fixedly connected; the rear side inner panel reinforcement third lap joint surface 1434 is attached to the rear upper side inner panel fifth lap joint surface 1316 and the inner middle reinforcement sixth lap joint surface 1135, and is fixedly connected.

[0128] Please refer to Figure 22The D-pillar inner panel includes a D-pillar inner panel middle section 144 at the middle part thereof, and the D-pillar inner panel middle section 144 is provided with a D-pillar inner panel middle section first lap joint surface 1441, a D-pillar inner panel middle section second lap joint surface 1442, a D-pillar inner panel middle section third lap joint surface 1443, and a D-pillar inner panel middle section fourth lap joint surface 1444. The rear wheel bulge inner panel 111, the inner side rear reinforcement 114, the rear wheel bulge outer panel 115, the rear side wall upper inner panel 131, the roof rear cross beam support plate 132, the roof rear cross beam connecting plate 141, and the rear side wall inner panel reinforcement 142 are fixedly connected. Specifically, the roof rear cross beam support plate first lap joint surface 1411 is attached to the roof rear cross beam connecting plate fourth lap joint surface 1426 and the rear side wall upper inner panel seventh lap joint surface 1318, and is fixedly connected; the roof rear cross beam support plate fourth lap joint surface 1418 is attached to the roof rear cross beam connecting plate second lap joint surface 1423 and the rear side wall outer panel 2, and is fixedly connected; the roof rear cross beam support plate third lap joint surface 1414 is attached to the roof rear cross beam connecting plate first lap joint surface 1421 and the roof rear cross beam assembly 6, and is fixedly connected; the roof rear cross beam assembly 6 is pre-hung and limited by the rear side wall inner panel assembly 1 at the roof rear cross beam support plate pre-hung bolt hole 1417 of the roof rear cross beam support plate 141, and is screwed by the bolt 5 at the roof rear cross beam support plate first mounting hole 1415 and the roof rear cross beam support plate second mounting hole 1416 of the roof rear cross beam support plate 141.

[0129] Specifically, by fixedly connecting the rear wheel bulge inner panel 111, the inner side rear reinforcement 114, the rear wheel bulge outer panel 115, the rear side wall upper inner panel 131, the roof rear cross beam support plate 132, the roof rear cross beam connecting plate 141, and the rear side wall inner panel reinforcement 142, a transverse connection structure of the vehicle body C-pillar to the D-pillar can be formed, the stability of the rear side wall inner panel structure is ensured, the collision safety of the third row passenger area is effectively improved, and the safety of the third row passengers is ensured. At the same time, the stable lap joint of the rear wheel hub assembly 11 and the rear side wall upper inner panel assembly 13 and the D-pillar assembly 14 is ensured, and an upper lap joint structure of the rear side wall inner side rear force transmission structure is formed. By connecting the rear side wall inner panel reinforcement 143 with the rear side wall upper inner panel 131, the CD-pillar outer panel middle connector 132, the roof rear cross beam support plate 141, the roof rear cross beam connecting plate 142, the rear side wall inner panel reinforcement 143, and the rear side wall upper inner panel 131, the stroke cavity structure and the stable lap joint of the rear wheel hub assembly 11 and the rear side wall upper inner panel assembly 13 and the D-pillar assembly 14 are ensured, and an upper lap joint structure of the rear side wall inner side rear force transmission structure is formed, and the integrity of the rear side wall inner panel inner side rear upper end force transmission structure is ensured.

[0130] Please continue to read Figures 1 to 3 The lower end of the rear side wall outer panel 2 is lap jointed on the rear floor assembly 4 and wrapped outside the rear side wall inner panel assembly 1.

[0131] Please continue to read Figures 1 to 3The lower part of one side of the rear apron assembly 3 is connected with the rear floor assembly 4. The lower part of one side of the rear apron assembly 3 is fixedly connected with the rear floor assembly 4. Specifically, the rear apron assembly 3 is connected with the middle section of the D-pillar inner panel 144 and the middle section of the D-pillar outer panel 145, for example, by spot welding and / or plug welding, bolt connection.

[0132] Specifically, by connecting the lower part of one side of the rear apron assembly 3 with the rear floor assembly 4, the lower structure of the annular cavity of the rear part of the vehicle body can be formed, thereby improving the torsional performance of the rear part of the vehicle body.

[0133] For further details, please refer to Figure 23 The rear floor assembly 4 includes a rear floor, a rear floor upper cross beam, a rear floor upper cross beam connecting member 42, a shock absorber mounting seat support plate 43, a seat mounting reinforcement 44, and a rear floor side beam. The rear floor is connected with the rear floor upper cross beam connecting member and is located below the rear floor upper cross beam. The rear floor upper cross beam connecting member 42 is used to connect the rear floor with the rear floor upper cross beam. The seat mounting reinforcement 44 includes two straight triangle side plates and a cover plate connecting the oblique edges of the two side plates. The vertical edge of the side plate is welded with the front side of the rear floor cross beam. The horizontal edge of the side plate of the seat mounting reinforcement 44 and the lower edge of the cover plate of the seat mounting reinforcement 44 are welded with the rear floor. The rear floor side beam is connected with the side of the rear floor. The rear floor upper cross beam connecting member 42 is fixedly connected with the inner front reinforcement 112 (for example, by a plurality of hexagonal flange bolts 6 and a plurality of spot welds). The shock absorber mounting seat support plate 43 is fixedly connected with the inner middle reinforcement 113. The seat mounting reinforcement 44 is fixedly connected with the inner rear reinforcement 114, for example, by a plurality of bolts and / or a plurality of spot welds.

[0134] For further details, please refer to Figure 24 The rear floor side beam includes a rear floor side beam front section 41. The rear floor side beam front section 41 is provided with a rear floor side beam front section first lap joint surface 411, a rear floor side beam front section second lap joint surface 412, a rear floor side beam front section third lap joint surface 413, a rear floor side beam front section fourth lap joint surface 414, a rear floor side beam front section plug welding hole 415, and a rear floor side beam front section fifth lap joint surface 416. The rear floor side beam front section first lap joint surface 411 is in contact with the side wall outer panel 2 and the side wall rocker reinforcement rear connecting plate second lap joint surface 1222, and is fixedly connected. The rear floor side beam front section second lap joint surface 412 is in contact with the side wall rocker reinforcement rear connecting plate third lap joint surface 1223 and the side wall outer panel 2, and is fixedly connected. The rear wheel bulge outer panel 115 is in contact with the rear floor side beam front section fifth lap joint surface 416, and is connected by plug welding at the rear floor side beam front section plug welding hole 415. The side wall rocker reinforcement rear connecting plate 122, the side wall rocker support bracket welding assembly 123, and the rear floor side beam front section 41 form a vehicle body rocker rear cavity structure.

[0135] Specifically, by connecting the rear floor cross beam connecting piece 42 with the inner front side reinforcement 112 and the rear wheel bulge inner plate 111, the rear side inner plate assembly 1 and the rear floor assembly 4 can form a cavity structure, which constitutes a lower lap joint structure of the side inner front force transmission structure.

[0136] Please refer to Figure 25 The rear floor upper cross beam connecting piece 42 is provided with a rear floor upper cross beam connecting piece first lap joint surface 421, a rear floor upper cross beam connecting piece first mounting through hole 422, a rear floor upper cross beam connecting piece second lap joint surface 423, a rear floor upper cross beam connecting piece second mounting through hole 424, a rear floor upper cross beam connecting piece third lap joint surface 425, a rear floor upper cross beam connecting piece fourth lap joint surface 426, and a rear floor upper cross beam connecting piece fifth lap joint surface 427. The rear floor upper cross beam connecting piece second lap joint surface 423 is attached to the fifth lap joint surface 1125 of the inner front side reinforcement, the first mounting nut hole 1126 of the inner front side reinforcement is aligned with the center of the second mounting through hole 424 of the rear floor upper cross beam connecting piece, and is fixedly connected by a bolt, the second mounting nut hole 1127 of the inner front side reinforcement is aligned with the center of the first mounting through hole 422 of the rear floor upper cross beam connecting piece, and is fixedly connected by a bolt, the fourth lap joint surface 426 of the rear floor upper cross beam connecting piece, the fifth lap joint surface 427 of the rear floor upper cross beam connecting piece, and the sixth lap joint surface 1119 of the rear wheel bulge inner plate are attached and connected by spot welding. The first lap joint surface 421 of the rear floor upper cross beam connecting piece is attached to the fifth lap joint surface 1128 of the inner front side reinforcement and the sixth lap joint surface 1119 of the rear wheel bulge inner plate, and is connected by spot welding; the third lap joint surface 425 of the rear floor upper cross beam connecting piece is attached to the fourth lap joint surface 1125 of the inner front side reinforcement and the sixth lap joint surface 1119 of the rear wheel bulge inner plate, and is connected by spot welding.

[0137] Specifically, by connecting the rear floor upper cross beam connecting piece 42 with the inner front side reinforcement 112 and the rear wheel bulge inner plate 111, the rear side inner plate assembly 1 and the rear floor assembly 4 can form a cavity structure, which constitutes a lower lap joint structure of the side inner front force transmission structure.

[0138] Please refer to Figure 26The shock absorber mounting seat support plate 43 is provided with a shock absorber mounting seat support plate first lap joint surface 431, a shock absorber mounting seat support plate first mounting through hole 432, a shock absorber mounting seat support plate second lap joint surface 433, a shock absorber mounting seat support plate second mounting through hole 434, a shock absorber mounting seat support plate third lap joint surface 435, a shock absorber mounting seat support plate welding through hole 436, a shock absorber mounting hole 437 and a shock absorber mounting through hole 438. The shock absorber mounting seat support plate second lap joint surface 433 of the rear floor assembly 4 is attached to the inner middle reinforcement first lap joint surface 113, the shock absorber mounting seat support plate second mounting through hole 434 is aligned with the inner middle reinforcement first mounting nut hole 1139 and is fixedly connected, and the fixedly connected mode can adopt bolt connection and the like; the shock absorber mounting seat support plate first mounting through hole 432 is aligned with the inner middle reinforcement second mounting nut hole 1140 and is fixedly connected, and the fixedly connected mode can adopt bolt connection and the like; the shock absorber mounting seat support plate first lap joint surface 431, the rear wheel bulge inner plate sixth lap joint surface 1119 and the inner middle reinforcement second lap joint surface 1131 are attached and fixedly connected; the shock absorber mounting seat support plate third lap joint surface 435, the rear wheel bulge inner plate sixth lap joint surface 1119 and the inner middle reinforcement eighth lap joint surface 1138 are attached and fixedly connected.

[0139] Specifically, by connecting the inner middle reinforcement 113 with the shock absorber mounting seat support plate 43 and the rear wheel bulge inner plate 111, the rear side wall inner plate assembly 1 and the rear floor assembly 2 can form a cavity structure, which constitutes a lower first lap joint structure of the side wall inner side rear force transmission structure. At the same time, the shock absorber mounting point positions of the rear side wall inner plate assembly 1 and the rear floor assembly 2 are stably connected, ensuring that the force of the shock absorber can be effectively transmitted to the vehicle body, ensuring the stability of the vehicle body structure and improving the torsional performance.

[0140] Please refer to Figure 27 The seat mounting reinforcement 44 is provided with a seat mounting reinforcement first lap joint surface 441, a seat mounting reinforcement second lap joint surface 442, a seat mounting through hole 443, a seat mounting reinforcement third lap joint surface 444, a seat mounting reinforcement fourth lap joint surface 445, a seat mounting reinforcement fifth lap joint surface 446 and a seat mounting reinforcement mounting through hole 447. The seat mounting reinforcement fifth lap joint surface 446 is attached to the inner rear reinforcement third lap joint surface 1144, the seat mounting reinforcement mounting through hole 447 is aligned with the inner rear reinforcement mounting nut hole 1143 and is fixedly connected by a bolt; the seat mounting reinforcement fourth lap joint surface 445, the rear wheel bulge inner plate sixth lap joint surface 1119 and the inner rear reinforcement second lap joint surface 1142 are attached and fixedly connected; the seat mounting reinforcement first lap joint surface 441, the rear wheel bulge inner plate sixth lap joint surface 1119 and the inner rear reinforcement fourth lap joint surface 1145 are attached and fixedly connected.

[0141] Specifically, by connecting the inner rear reinforcement 114 with the seat mounting reinforcement 44 and the rear wheel bulge inner panel 111, the connection can ensure that the rear side wall inner panel assembly 1 and the rear floor assembly 2 form a cavity structure, which constitutes a lower second lap joint structure of the side wall inner rear force transmission structure.

[0142] Please continue to refer to Figures 1 to 3 The roof rear cross beam assembly 6 is fixedly connected to the rear floor assembly 4, and the roof rear cross beam assembly 6 is lapped at the edge of the rear side wall inner panel assembly 1. The roof rear cross beam assembly 6, the D-pillar inner panel middle section 144 and the D-pillar outer panel middle section 145 enclose a cavity, specifically, the cavity can be enclosed by a combination of plug welding and spot welding. The D-pillar inner panel middle section 144 and the D-pillar outer panel middle section 145 are fixedly connected with the rear apron assembly 3, specifically, the D-pillar assembly 14 is fixedly connected with the roof rear cross beam assembly 6 and the rear apron assembly 3. The roof rear cross beam assembly 6 and the rear side wall inner panel assembly 1 are pre-hung at the roof rear cross beam support plate pre-hung bolt hole 1417 of the roof rear cross beam support plate 141, and are fixedly connected by bolts at the roof rear cross beam support plate first mounting hole 1415 and the roof rear cross beam support plate second mounting hole 1416. The roof rear cross beam support plate third lap joint surface 1414, the roof rear cross beam connecting plate first lap joint surface 1421 and the roof rear cross beam assembly 6 are in close contact and fixedly connected; the roof rear cross beam assembly 6 and the rear side wall inner panel assembly 1 are pre-hung at the roof rear cross beam support plate pre-hung bolt hole 1417 of the roof rear cross beam support plate 141, and are fixedly connected by bolts at the roof rear cross beam support plate first mounting hole 1415 and the roof rear cross beam support plate second mounting hole 1416 of the roof rear cross beam support plate 141.

[0143] Specifically, by connecting the roof rear cross beam support plate 141 with the roof rear cross beam connecting plate 142, the rear upper side wall inner panel 131, the rear side wall outer panel 2 and the roof rear cross beam assembly 6, a rear part of the vehicle body annular cavity upper structure can be formed, and the D-pillar inner panel middle section 144, the D-pillar outer panel middle section 145 and the rear apron assembly 3 are connected to form a cavity, which can constitute a rear part of the vehicle body annular cavity lower structure, and the entire rear part of the annular cavity structure is formed, thereby improving the torsional performance of the rear part of the vehicle body.

[0144] It should be noted that the CD-pillar outer panel middle part connecting piece 132, the rear lower side wall inner panel reinforcement 133, the roof rear cross beam support plate 132 and the D-pillar inner panel middle section 144 are all made of hot-formed high-strength steel plate. The hot-formed high-strength steel plate is a prior art, which will not be described here.

[0145] Specifically, in the embodiment, the middle connecting piece 132 of the CD pillar outer plate, the rear lower inner panel reinforcement 133 of the side wall, the rear cross beam support plate 132 of the top cover, and the middle section 144 of the D pillar inner plate are all made of a hot-formed high-strength steel plate, so that the strength of the overall structure of the rear part of the vehicle body is ensured, the crash performance requirement of the third-row passenger area is effectively ensured, the safety performance of the vehicle body is improved, the torsional stiffness performance of the vehicle body is ensured, and the comfort of the vehicle body is improved.

[0146] The principle of the rear side wall inner plate assembly of the embodiment is that the inner side front reinforcement 112, the inner side middle reinforcement 113, and the inner side rear reinforcement 114 of the rear hub package assembly 11 are respectively connected with the rear floor upper cross beam connecting piece 42, the shock absorber mounting seat support plate 43, and the seat mounting reinforcement 44 of the rear floor assembly 4 to form three force transmission paths (the rear force transmission structure and the front force transmission structure are respectively shown in Figs. 8 and 9), so that the force borne by the rear floor is dispersed and transmitted to the upper vehicle body, and the integrity of the force transmission structure of the vehicle body is ensured. Figure 28 and Figure 29 The principle of the rear side wall inner plate assembly of the embodiment is that the inner side front reinforcement 112, the inner side middle reinforcement 113, and the inner side rear reinforcement 114 of the rear hub package assembly 11 are respectively connected with the rear floor upper cross beam connecting piece 42, the shock absorber mounting seat support plate 43, and the seat mounting reinforcement 44 of the rear floor assembly 4 to form three force transmission paths (the rear force transmission structure and the front force transmission structure are respectively shown in Figs. 8 and 9), so that the force borne by the rear floor is dispersed and transmitted to the upper vehicle body, and the integrity of the force transmission structure of the vehicle body is ensured.

[0147] The above description is only the preferred embodiment of the present application, and does not limit the patent scope of the present application. Any equivalent structural transformation, direct / indirect application in other related technical fields, or the like within the inventive concept of the present application and the content of the specification and drawings are included in the patent protection scope of the present application.

Claims

1. A rear side panel assembly, characterized in that, The rear side panel assembly includes a rear side panel inner panel assembly and a rear floor assembly. The rear side panel inner panel assembly includes a rear wheel hub assembly. The rear wheel hub assembly includes a rear wheel hub inner panel and an inner front reinforcement disposed on the inner front part of the rear wheel hub inner panel. The rear floor assembly includes a rear floor crossbeam connector. The inner front reinforcement is fixedly connected to the rear floor crossbeam connector. The rear side panel assembly also includes a side panel outer plate, the lower end of which overlaps the rear floor assembly and covers the outside of the rear side panel inner plate assembly. The rear floor assembly also includes a rear floor and a rear floor side beam connected to the side of the rear floor. The rear side panel inner plate assembly also includes a rear door lock pin reinforcement assembly. The rear door lock pin reinforcement assembly includes a side sill support bracket assembly and a rear connector of the side sill reinforcement. The rear connector of the side sill reinforcement, the side sill support bracket assembly, and the front section of the rear floor side beam together form a cavity. The rear wheel hub assembly also includes a rear wheel hub outer plate fixedly connected to the outer edge of the rear wheel hub inner plate. The rear side panel inner plate assembly also includes a side panel upper rear inner plate assembly and a D-pillar assembly. The side panel upper rear inner plate assembly includes a C-D pillar outer plate middle connector and a side panel upper rear inner plate and a side panel lower rear inner plate reinforcement fixedly connected to both ends of the C-D pillar outer plate middle connector. The side panel upper rear inner plate is disposed above the rear wheel hub assembly and connected to the rear wheel hub assembly. The inner front reinforcement is fixedly connected to the rear wheel hub inner plate, the side panel upper rear inner plate, the rear wheel hub outer plate, and the side panel lower rear inner plate reinforcement.

2. The rear side enclosure assembly as claimed in claim 1, characterized in that, The rear wheel hub assembly also includes an inner center reinforcement member disposed in the inner center of the inner plate of the rear wheel hub, and the rear floor assembly also includes a shock absorber mounting bracket support plate, wherein the inner center reinforcement member is fixedly connected to the shock absorber mounting bracket support plate.

3. The rear side panel assembly as described in claim 1, characterized in that, The rear wheel hub assembly also includes an inner rear reinforcement disposed on the inner rear part of the inner plate of the rear wheel hub, and the rear floor assembly also includes a seat mounting reinforcement, the inner rear reinforcement being fixedly connected to the seat mounting reinforcement.

4. The rear side panel assembly as claimed in claim 1, characterized in that, The rear wheel hub assembly also includes a front connecting plate for the rear wheel hub outer panel connected to the front end of the rear wheel hub outer panel. The rear wheel hub outer panel, the front connecting plate for the rear wheel hub outer panel, the rear door lock buckle reinforcement, the rear connecting piece for the side sill reinforcement, the upper rear inner panel of the side panel, the lower rear inner panel reinforcement of the side panel, and the outer side panel together form a C-pillar.

5. The rear side enclosure assembly as described in claim 2, characterized in that, The D-pillar assembly also includes a side rear inner panel reinforcement, which is fixedly connected to the inner middle reinforcement, the CD-pillar outer panel middle connector, and the side rear upper inner panel.

6. The rear side enclosure assembly as claimed in claim 1, characterized in that, The rear side panel assembly also includes a roof rear crossbeam assembly, and the D-pillar assembly also includes a D-pillar inner panel and a D-pillar outer panel fixedly connected to the D-pillar inner panel. The D-pillar inner panel includes a middle section located in its middle part, and the D-pillar outer panel includes a middle section located in its middle part. The middle sections of the D-pillar inner panel and the D-pillar outer panel, together with the roof rear crossbeam assembly, form a cavity.

7. The rear side enclosure assembly as claimed in claim 6, characterized in that, The rear side panel assembly also includes a rear skirt assembly, the lower part of one side of which overlaps with the rear floor assembly, and the rear skirt assembly is fixedly connected to the middle section of the inner panel of the D-pillar and the middle section of the outer panel of the D-pillar.

8. The rear side enclosure assembly as claimed in claim 6, characterized in that, The D-pillar assembly also includes a rear crossbeam support plate and a rear crossbeam connecting plate, wherein the rear crossbeam support plate is fixedly connected to the rear crossbeam connecting plate, the upper rear inner panel of the side wall, and the outer panel of the side wall.

9. A vehicle body, characterized in that, The vehicle body includes the rear side panel assembly as described in any one of claims 1-8.

10. A vehicle, characterized in that, The vehicle includes the body as described in claim 9.

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