vehicle

Abstract

The present invention provides a vehicle body rear structure and a vehicle, wherein the vehicle body rear structure of the present invention comprises an integrally die-cast rear floor, a rear section of a rear floor longitudinal beam and a rear anti-collision beam; the rear floor is formed with rear floor longitudinal beams arranged on both sides, a rear wheel cover connected to the rear floor longitudinal beams on each side, and a plurality of rear floor cross beams connected between the front ends of the rear floor longitudinal beams on both sides, and the rear ends of the rear floor longitudinal beams on both sides are respectively connected with the rear sections of the rear floor longitudinal beams; the rear anti-collision beam comprises an anti-collision beam body with a hollow interior, and two connecting seats connected to the front end surface of the anti-collision beam body, and the rear anti-collision beam is directly connected to the rear sections of the rear floor longitudinal beams on both sides through the two connecting seats. The vehicle body rear structure of the present invention can simplify the vehicle body rear structure, reduce the number of components, reduce the manufacturing cost, and improve the strength of the vehicle body rear structure, so that the vehicle body rear structure has a better use effect.

Description

Technical Field

[0001] The present invention relates to the technical field of automobile bodies, and in particular to a rear body structure. The present invention also relates to a vehicle provided with the rear body structure. Background Art

[0002] With the development of automobile technology, people have higher and higher requirements for the comprehensive performance of automobiles. Generally speaking, the body structure is an important structure of the automobile and has an important impact on the overall performance of the automobile. Therefore, the reasonable setting of the rear structure of the body can effectively improve the overall performance of the body.

[0003] However, in the prior art, the rear structure of the vehicle body has many parts, a complex structure, and a high manufacturing cost. For example, an energy absorption box is usually provided between the anti-collision beam and the rear floor longitudinal beam in the existing rear structure of the vehicle body to reduce the damage to the longitudinal beam of the vehicle body caused by the impact force. This not only affects the overall assembly efficiency, but also causes the problem of difficulty in repairing and replacing parts, thereby affecting the improvement of the overall performance of the vehicle body. Summary of the invention

[0004] In view of this, the present invention aims to provide a vehicle body rear structure with a simple structure, a small number of parts and a low manufacturing cost.

[0005] To achieve the above object, the technical solution of the present invention is achieved as follows:

[0006] A vehicle body rear structure, comprising an integrally die-cast rear floor, a rear section of a rear floor longitudinal beam, and a rear anti-collision beam; the rear floor is formed with rear floor longitudinal beams arranged on both sides, a rear wheel housing connected to the rear floor longitudinal beams on each side, and a plurality of rear floor cross beams connected between the rear floor longitudinal beams on both sides, and the rear ends of the rear floor longitudinal beams on both sides are respectively connected to the rear sections of the rear floor longitudinal beams;

[0007] The rear anti-collision beam comprises an internally hollow anti-collision beam body and two connecting seats connected to the front end surface of the anti-collision beam body, and the rear anti-collision beam is directly connected to the rear sections of the rear floor longitudinal beams on both sides through the two connecting seats.

[0008] Furthermore, the anti-collision beam body adopts an extruded aluminum structure, and the cross-section of the anti-collision beam body is rectangular, and the ratio between the width and the height of the cross-section of the anti-collision beam body is not less than 0.7.

[0009] Furthermore, the middle portion of the anti-collision beam body is arched rearward so that the anti-collision beam body is in an arc shape.

[0010] Furthermore, a reinforcing plate is integrally formed inside the anti-collision beam body, and the reinforcing plate is connected between the front side wall and the rear side wall of the anti-collision beam body.

[0011] Furthermore, the reinforcing plate is a plurality of pieces arranged at intervals in the upper and lower parts; and / or, the reinforcing plate is provided with an anti-collision beam collapse hole, and the anti-collision beam collapse hole penetrates at least one of the upper side wall and the lower side wall of the anti-collision beam body.

[0012] Furthermore, the connecting seat includes a connecting box with a blind hole formed inside, and an anti-collision beam connecting plate fixedly connected to the connecting box, and the rear end of the rear section of the rear floor longitudinal beam is fixedly connected to the longitudinal beam connecting plate, and the anti-collision beam connecting plate is detachably connected to the longitudinal beam connecting plate through a first connecting member.

[0013] Furthermore, the connecting seat is connected to the front side wall of the anti-collision beam body through a screw connection structure, and a connecting through hole corresponding to the screw connection structure is provided on the rear side wall of the anti-collision beam body.

[0014] Furthermore, the rear section of the rear floor longitudinal beam is made of extruded aluminum profile, and a plurality of longitudinal beam rear section collapse holes are provided on the rear section of the rear floor longitudinal beam.

[0015] Furthermore, a plug-in slot is formed at the rear end of the rear floor longitudinal beam, and the front end of the rear section of the rear floor longitudinal beam is inserted into the corresponding plug-in slot and is detachably connected to the rear floor longitudinal beam via a second connecting member.

[0016] Further, the rear floor cross beam comprises a rear floor front cross beam connected between the front ends of the rear floor longitudinal beams on both sides, and a rear floor rear cross beam connected between the rear ends of the rear floor longitudinal beams on both sides, and the edge of the rear wheel cover is formed with a rear wheel cover flange connected to the rear floor longitudinal beams;

[0017] The rear floor front cross beam, the rear floor rear cross beam and the rear floor longitudinal beams on both sides are connected to form a first force transmission ring, and the rear floor longitudinal beams on each side are connected to the rear wheel cover flanges on the corresponding side to form a second force transmission ring.

[0018] Furthermore, the rear wheel covers on both sides are connected to the shelf board cross beams through connecting plates respectively, and the rear floor, the shelf board cross beam and the connecting plates on both sides are connected to form a third force transmission ring.

[0019] Compared with the prior art, the present invention has the following advantages:

[0020] The rear vehicle body structure described in the present invention integrates the rear floor longitudinal beam, the rear wheel cover and the rear floor cross beam, and replaces the energy absorption box connecting the rear floor and the rear anti-collision beam by arranging the rear section of the rear floor longitudinal beam, so as to simplify the rear vehicle body structure, reduce the number of parts and components, reduce the manufacturing cost, and at the same time improve the strength of the rear vehicle body structure, thereby improving the use effect of the rear vehicle body structure.

[0021] In addition, the rear section of the rear floor longitudinal beam is made of extruded aluminum profiles, and a collapse hole is set on the rear section of the rear floor longitudinal beam. The uniform cross-section of the extruded aluminum profile and the collapse guide of the collapse hole can also be used to improve the collapse energy absorption effect of the rear section of the rear floor longitudinal beam. At the same time, the rear section of the rear floor longitudinal beam replaces the energy absorption box, eliminating the rear energy absorption box structure in traditional vehicles, achieving a simplified structure and contributing to the lightweight design of the entire vehicle.

[0022] Another object of the present invention is to provide a vehicle having a vehicle body provided with the above-mentioned vehicle body rear structure.

[0023] Furthermore, a battery pack shell integrated with the vehicle body is provided in the middle portion of the vehicle body, the battery pack shell having a frame and a front floor panel connected to the top of the frame, the rear floor is connected to the frame through a plurality of connection units, and the front end of the rear floor overlaps the front floor panel.

[0024] Furthermore, a convex middle channel reinforcement rib is integrally formed on the upper end surface of the front floor panel, the middle channel reinforcement rib extends along the length direction of the vehicle body and is located in the middle part of the front floor panel along the width direction of the vehicle body, and a groove is formed at the front end of the rear floor, and the rear end of the middle channel reinforcement rib is embedded in the groove.

[0025] Furthermore, a limiting rib abutting against the front end of the rear floor is integrally formed on the front floor panel, and a gap is formed between the end of the rear end of the middle channel reinforcement rib and the inner wall of the groove.

[0026] The vehicle of the present invention is provided with the above-mentioned rear body structure, which can simplify the rear body structure, reduce the number of parts, reduce the production cost, and at the same time improve the strength of the rear body structure and the collision energy absorption performance.

[0027] In addition, by overlapping the front end of the rear floor with the front floor panel and providing a connection unit between the rear floor and the frame, the connection strength between the rear floor and the middle part of the vehicle body can be increased, thereby improving the connection reliability between the two.

[0028] In addition, the central channel reinforcement ribs can improve the structural strength of the battery pack housing, and when the car is in a head-on collision, the collision force on the battery pack housing is transferred to the rear floor, thereby improving the transmission and dispersion of force. The setting of the limit ribs is conducive to improving the assembly convenience between the battery pack housing and the rear floor, and the gap setting can prevent the central channel reinforcement ribs and the inside of the groove from causing damage to the rear floor when the vehicle is in a minor collision. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the accompanying drawings:

[0030] Figure 1 It is a partial structural schematic diagram of the rear structure of the vehicle body according to the first embodiment of the present invention;

[0031] Figure 2 for Figure 1 A partial enlarged view of part E in the middle;

[0032] Figure 3 This is a schematic diagram of the structure of the rear floor according to the first embodiment of the present invention from a first viewing angle;

[0033] Figure 4 This is a schematic diagram of the structure of the rear floor according to the first embodiment of the present invention from a second viewing angle;

[0034] Figure 5 for Figure 4 A partial enlarged view of part B;

[0035] Figure 6 This is a schematic structural diagram of the rear floor according to the first embodiment of the present invention from a third viewing angle;

[0036] Figure 7 This is a schematic diagram of the structure of the shelf crossbeam according to the first embodiment of the present invention being assembled in a vehicle body;

[0037] Figure 8 This is a schematic structural diagram of a rear anti-collision beam according to Embodiment 1 of the present invention from one viewing angle;

[0038] Fig. 9 for Figure 8 A partial enlarged view of part F in the middle;

[0039] Fig.10 This is a schematic structural diagram of the rear anti-collision beam according to the first embodiment of the present invention from another viewing angle;

[0040] Fig.11 for Fig.10 A partial enlarged view of the middle G part;

[0041] Fig.12 This is a schematic structural diagram of the anti-collision beam body according to the first embodiment of the present invention;

[0042] Fig.13 for Fig.12 A partial enlarged view of the middle H section;

[0043] Fig.14 This is a schematic diagram of the structure of the connecting socket according to the first embodiment of the present invention;

[0044] Fig.15 A schematic structural diagram of the battery pack housing and the rear floor assembly from one perspective according to the second embodiment of the present invention;

[0045] Fig.16 for Fig.15 A partial enlarged view of part D in the middle;

[0046] Fig.17 It is a structural schematic diagram from another perspective of the battery pack housing and the rear floor assembly according to the second embodiment of the present invention;

[0047] Fig.18 for Fig.17 A partial enlarged view of part A;

[0048] Fig.19 This is a schematic diagram of the structure of a battery pack housing according to Embodiment 2 of the present invention;

[0049] Fig. 20 for Fig.19 A partial enlarged view of part C.

[0050] Description of reference numerals:

[0051] 1. Rear floor longitudinal beam; 101. Longitudinal beam reinforcement rib; 102. Rear section of rear floor longitudinal beam; 1021. Collapse hole of rear section of longitudinal beam; 1022. Longitudinal beam connecting plate; 10221. Plate connection matching hole; 1023. Plug-in slot;

[0052] 2. Rear wheel cover; 201. Rear wheel cover flange; 202. Rear wheel cover reinforcement rib;

[0053] 3. Front crossbeam of rear floor; 301. Mounting point of rear seats; 302. Reinforcement ribs of front crossbeam; 303. Grooves; 304. Support ribs;

[0054] 4. Rear floor rear crossbeam; 401. Rear crossbeam reinforcement;

[0055] 5. Connecting beam; 6. Strengthening beam; 601. Strengthening rib avoidance groove;

[0056] 7. Door sill beam; 8. Battery pack housing; 801. Frame; 802. Front floor panel; 8021. Limiting ribs; 803. Rear seat mounting crossbeam; 8031. Support beam; 8032. Seat mounting beam; 804. Middle channel reinforcement rib; 805. Rear end panel;

[0057] 9. Connecting unit; 901. Shell connecting seat; 9011. Shell connecting seat body; 9012. Embedding part; 902. Connecting block; 9021. Connecting groove;

[0058] 10. Shelf beam; 11. Connecting plate;

[0059] 12. Anti-collision beam body; 1200. Reinforcement plate; 12001. Anti-collision beam collapse hole; 1201. Front side wall; 12011. Side wall connection hole; 1202. Rear side wall; 12021. Connection hole; 1203. Upper side wall; 1204. Lower side wall;

[0060] 13. Connecting seat; 1301. Connecting box; 13011. Box connecting hole; 1302. Anti-collision beam connecting plate; 13021. Plate connecting hole. DETAILED DESCRIPTION

[0061] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other.

[0062] In the description of the present invention, it should be noted that if there are terms indicating orientation or positional relationship such as "upper", "lower", "inner", "outer", "front", "back", "left", "right", etc., they are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, if there are terms such as "first" and "second", they are also used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0063] In addition, in the description of the present invention, unless otherwise clearly defined, the terms "installed", "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood in combination with specific circumstances.

[0064] The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

[0065] Embodiment 1

[0066] The present invention relates to a vehicle body rear structure, which comprises an integrally die-cast rear floor, a rear section 102 of a rear floor longitudinal beam and a rear anti-collision beam in terms of overall structure.

[0067] The rear floor is formed with rear floor longitudinal beams 1 arranged on both sides, rear wheel covers 2 connected to the rear floor longitudinal beams 1 on each side, and a plurality of rear floor cross beams connected between the rear floor longitudinal beams 1 on both sides, and the rear ends of the rear floor longitudinal beams 1 on both sides are respectively connected to the rear sections 102 of the rear floor longitudinal beams. The rear anti-collision beam includes an anti-collision beam body 12 with a hollow interior, and two connecting seats 13 connected to the front end surface of the anti-collision beam body 12, and the rear anti-collision beam is directly connected to the rear sections 102 of the rear floor longitudinal beams on both sides through the two connecting seats 13.

[0068] This embodiment uses an integrated die-casting arrangement and provides a rear section 102 of the rear floor longitudinal beam to replace the energy absorption box connecting the rear floor and the rear anti-collision beam, thereby simplifying the structure, reducing the mold development cost and assembly difficulty, and also improving the rear structural strength of the vehicle body.

[0069] Based on the above overall introduction, in this embodiment, as a preferred implementation, Figure 8 and Fig.10 As shown, the front end face of the present embodiment refers to the end face of the anti-collision beam body 12 facing the front side of the vehicle when the anti-collision beam body 12 is assembled in the vehicle body. Preferably, the anti-collision beam body 12 of the present embodiment adopts an extruded aluminum structure, and the cross section of the anti-collision beam body 12 is rectangular, and the ratio between the width and height of the cross section of the anti-collision beam body 12 is not less than 0.7.

[0070] In this embodiment, the cross section of the anti-collision beam body 12 is rectangular, that is, Fig.11 As shown, it is roughly a rectangle in overall visual sense, but compared with a rectangle in the strict sense, the angles of the four corners of the cross section of the anti-collision beam body 12 are not right angles, but can be subject to certain structural changes based on the requirements of appearance and structural performance, such as chamfering the connection between the sides.

[0071] By setting the anti-collision beam body 12 as a rectangle with a ratio between the width and the height of the cross section not less than 0.7, the width of the anti-collision beam body 12 can be increased to realize a large-section design of the anti-collision beam body 12, thereby improving its structural strength and thus improving the anti-collision performance of the vehicle. At the same time, the anti-collision beam body 12 adopts an extruded aluminum structure, which can also reduce the mold development cost and its own weight, realize the lightweight design of the anti-collision beam body 12, thereby improving the lightweight degree and use quality of the entire vehicle.

[0072] In addition, the structural design in which the ratio between the width and the height of the cross-section of the anti-collision beam body 12 in the present embodiment is not less than 0.7 means that compared with the cross-sectional height of the existing anti-collision beam body 12, the cross-sectional height dimension of the present embodiment (the direction of the height refers to the vehicle height direction) remains unchanged, while the cross-sectional width dimension (the width refers to the vehicle length direction) is increased to achieve a width-to-height ratio of not less than 0.7, thereby realizing a large cross-sectional design of the anti-collision beam body 12 and improving the structural strength of the anti-collision beam body 12.

[0073] In specific implementation, Figure 8 and Fig.10 As shown, preferably, the middle portion of the anti-collision beam body 12 is arched backwards to make the anti-collision beam body 12 in an arc shape. Here, the middle portion of the anti-collision beam body 12 is arched backwards, which means that when the anti-collision beam body 12 is assembled in the vehicle body, along the length direction of the vehicle, the middle portion of the anti-collision beam body 12 is arched toward the rear of the vehicle, and the anti-collision beam body 12 is arranged in an arc shape, which can improve the structural strength of the anti-collision beam body 12 itself, and provide better protection for the vehicle when the rear of the vehicle is hit.

[0074] Also as a preferred embodiment, Fig.10 and Fig.11 As shown, a reinforcing plate 1200 is integrally formed inside the anti-collision beam body 12 of the present embodiment, and the reinforcing plate 1200 is connected between the front and rear side walls 1202 of the anti-collision beam body 12. The front and rear side walls 1202 referred to here refer to the front side wall 1201 and the rear side wall 1202 of the anti-collision beam body 12 in the length direction of the vehicle, respectively, and the front end face of the anti-collision beam body 12 is the outer end face of the front side wall 1201, and the provision of the reinforcing plate 1200 can effectively improve the structural strength of the anti-collision beam body 12, thereby improving the anti-collision performance of the vehicle.

[0075] As a further configuration, in a specific implementation, the above-mentioned reinforcing plates 1200 are arranged in two pieces spaced apart from each other, so that the cross section of the anti-collision beam body 12 is roughly "mesh"-shaped in the overall structure, so as to obtain better structural strength. At the same time, the reinforcing plate 1200 is also provided with an anti-collision beam collapse hole 12001, and the anti-collision beam collapse hole 12001 penetrates the upper side wall 1203 and the lower side wall 1204 of the anti-collision beam body 12. With such a configuration, on the one hand, the structural strength of the anti-collision beam body 12 is improved by setting the number of reinforcing plates 1200, and on the other hand, the configuration of the anti-collision beam collapse hole 12001 can realize the collapse guidance of the reinforcing plate 1200 when the vehicle is hit, so that the anti-collision beam body 12 has energy absorption performance.

[0076] Of course, the upper side wall 1203 and the lower side wall 1204 refer to the top side wall and the bottom side wall of the anti-collision beam body 12 in the vehicle height direction when the anti-collision beam body 12 is assembled in the vehicle body. In addition to being set to two, the number of the reinforcing plates 1200 can also be adjusted and set accordingly according to the actual structural strength requirements of the anti-collision beam body 12, such as being set to one, three or four arranged in an upper and lower interval.

[0077] The number and arrangement of the above-mentioned anti-collision beam collapse holes 12001, in addition to being set to penetrate the upper side wall 1203 and the lower side wall 1204 of the anti-collision beam body 12, can also be adjusted and set accordingly according to the actual collapse guiding requirements of the reinforcement plate 1200, such as arranging the anti-collision beam collapse holes 12001 into two groups arranged at intervals, and the two groups of anti-collision beam collapse holes 12001 penetrate the upper side wall 1203 and the lower side wall 1204 of the anti-collision beam body 12, or, the anti-collision beam collapse holes 12001 are set to penetrate the upper side wall 1203 of the anti-collision beam body 12, or, the anti-collision beam collapse holes 12001 are set to penetrate the lower side wall 1204 of the anti-collision beam body 12.

[0078] It is worth mentioning that a chamfered structure is formed between the rear side wall 1202 of the present embodiment and the upper side wall 1203 and the lower side arm respectively. The chamfered structure can guide the upper side wall 1203 and the lower side wall 1204 to collapse when the vehicle encounters a collision, thereby enhancing the collapse energy absorption effect of the anti-collision beam body 12.

[0079] In this embodiment, as another preferred implementation, Figure 1 , Fig. 9 and Fig.14 As shown, the above-mentioned connecting seat 13 includes a connecting box 1301 with a blind hole formed inside, and an anti-collision beam connecting plate 1302 fixedly connected to the connecting box 1301, and a longitudinal beam connecting plate 1022 is fixedly connected to the rear end of the rear section 102 of the rear floor longitudinal beam, and the anti-collision beam connecting plate 1302 is detachably connected to the longitudinal beam connecting plate 1022 through a first connecting member.

[0080] In a specific implementation, the anti-collision beam connecting plate 1302 is preferably provided with a plurality of plate connecting holes 13021, and the openings of the blind holes of each plate connecting hole 13021 are spaced apart, and the longitudinal beam connecting plate 1022 is provided with plate connecting matching holes 10221 which are arranged one by one corresponding to each plate connecting hole 13021, and the anti-collision beam connecting plate 1302 and the longitudinal beam connecting plate 1022 are fixedly connected by a plurality of first connecting members which are respectively passed through each plate connecting hole 13021 and the corresponding plate connecting matching holes 10221.

[0081] In addition, the above-mentioned first connecting member is preferably a common bolt product, so that the connection between the anti-collision beam connecting plate 1302 and the longitudinal beam connecting plate 1022 is reliable and the connection operation is simple, and it can realize convenient disassembly and assembly between the anti-collision beam body 12 and the vehicle body. At the same time, it can also reduce the overall production cost of the rear structure of the vehicle body.

[0082] At the same time, in order to facilitate the assembly of the connecting seat 13 on the anti-collision beam body 12, as a preferred embodiment, the connecting seat 13 of this embodiment is connected to the front side wall 1201 of the anti-collision beam body 12 through a screw connection structure, and as shown in FIG. Fig.11 As shown, a connecting through hole 12021 corresponding to the screw connection structure is provided on the rear side wall 1202 of the anti-collision beam body 12.

[0083] In specific implementation, combined with Fig.10 , Fig.12 , Fig.13 and Fig.14 As shown, a plurality of box connection holes 13011 are provided on the box body of the connection box 1301, and a plurality of side wall connection holes 12011 are provided on the front side wall 1201 of the anti-collision beam body 12, and the connection seat 13 and the anti-collision beam body 12 are fixedly connected by a plurality of bolts passing through the box connection holes 13011 and the side wall connection holes 12011, so as to realize convenient disassembly and assembly between the two. The above-mentioned connection through holes 12021 are used for disassembling and assembling the bolts.

[0084] Preferably, the rear section 102 of the rear floor longitudinal beam of the present embodiment is made of extruded aluminum profiles to reduce mold development costs and self-weight, thereby realizing a lightweight design of the rear section 102 of the rear floor longitudinal beam. Figure 1 and Figure 2 As shown, a plurality of longitudinal beam rear section collapse holes 1021 are provided on the rear floor longitudinal beam rear section 102 to enhance the energy absorption performance of the rear floor longitudinal beam rear section 102, thereby improving the quality of the entire vehicle.

[0085] In the specific implementation, it is preferred to set the cross-section of the rear floor longitudinal beam rear section 102 to be consistent. The consistent cross-section of the extruded aluminum profile and the collapse guidance of the collapse holes 1021 in the rear section of the longitudinal beam can also be used to enhance the collapse energy absorption effect of the rear floor longitudinal beam rear section 102.

[0086] It is worth mentioning here that since the above-mentioned rear floor longitudinal beam rear section 102 and the rear anti-collision beam body 12 both have crush energy absorption performance, the two cooperate with each other to effectively improve the energy absorption effect of the rear part of the vehicle body, thereby effectively improving the quality of vehicle use.

[0087] To facilitate the assembly of the rear floor longitudinal beam rear section 102 on the rear floor longitudinal beam 1, as preferred, Figure 1 and Figure 6As shown, in this embodiment, a plug-in slot 1023 is formed at the rear end of the rear floor longitudinal beam 1, and the front end of the rear section 102 of the rear floor longitudinal beam is inserted into the corresponding plug-in slot 1023 and is detachably connected to the rear floor longitudinal beam 1 through a second connecting member.

[0088] The second connecting member mentioned above is preferably a bolt product that is the same as the first connecting member, so as to have the advantages of reliable connection, simple connection operation, and reduced cost. At the same time, the plug-in method is adopted between the rear section 102 of the rear floor longitudinal beam and the rear floor longitudinal beam 1, which can also improve the convenience of assembly of the two.

[0089] In addition, as a preferred combination Figure 3 and Figure 4 As shown, the rear floor cross beam of this embodiment includes a rear floor front cross beam 3 connected between the front ends of the rear floor longitudinal beams 1 on both sides, and a rear floor rear cross beam 4 connected between the rear ends of the rear floor longitudinal beams 1 on both sides, and the edge of the rear wheel cover 2 is formed with a rear wheel cover flange 201 connected to the rear floor longitudinal beam 1. The rear floor front cross beam 3, the rear floor rear cross beam 4 and the rear floor longitudinal beams 1 on both sides are connected to form a first force transmission ring, and the rear floor longitudinal beams 1 on each side are connected to the rear wheel cover flange 201 on the corresponding side to form a second force transmission ring.

[0090] Therefore, by forming two annular force transmission structures and the coordinated cooperation between the two force transmission structures, the overall structural strength of the rear floor and the force transmission and dispersion effects can be effectively improved, thereby improving the overall collision force transmission performance of the rear of the vehicle body.

[0091] As a further setting, such as Figure 7 As shown, in this embodiment, the rear wheel covers 2 on both sides are connected to the storage board cross beam 10 through the connecting plates 11 respectively, and the rear floor, the storage board cross beam 10 and the connecting plates 11 on both sides are connected to form a third force transmission ring to enhance the overall structural strength of the rear part of the vehicle body and the force transmission and dispersion effect, which can further enhance the overall collision force transmission performance of the rear part of the vehicle body.

[0092] Here, by respectively setting up the first force transmission ring, the second force transmission ring and the third force transmission ring, the overall structural strength of the rear part of the vehicle body and the force transmission and dispersion effects can be effectively improved, and by using the three in coordination, the collision force transmission performance of the overall structure of the vehicle can be further improved.

[0093] It is worth mentioning that in order to further improve the strength of the rear structure of the vehicle body during the specific implementation, Figure 3 and Figure 4As shown, a plurality of longitudinal beam reinforcement ribs 101 are arranged in the rear floor longitudinal beam 1, and the longitudinal beam reinforcement ribs 101 are arranged alternately and partially extend to the outside of the rear wheel housing 2 (the side facing the outside of the vehicle body). In the vehicle body height direction, front cross beam reinforcement ribs 302 are arranged at the top and bottom of the rear floor front cross beam 3, and rear cross beam reinforcement ribs 401 are arranged at the bottom of the rear floor rear cross beam 4, and rear wheel housing reinforcement ribs 202 are arranged on the inner side of the rear wheel housing 2 (the side facing the inside of the vehicle body).

[0094] At the same time, the arrangement form and quantity of the reinforcing ribs in the above-mentioned rear floor longitudinal beam 1, rear wheel cover 2, rear floor front cross beam 3 and rear floor rear cross beam 4 can be set and adjusted accordingly according to the actual structural reinforcement requirements. For example, the reinforcing ribs on the top of the rear floor front cross beam 3 are arranged to be uniform and spaced along the width direction of the vehicle body, while the reinforcing ribs at the bottom of the rear floor rear cross beam 4 are arranged roughly in an "eight" shape.

[0095] The rear vehicle body structure of the present embodiment is achieved by integrating the rear floor longitudinal beam 1, the rear wheel cover 2 and the rear floor cross beam, and by providing a rear section 102 of the rear floor longitudinal beam to replace the energy absorption box connecting the rear floor and the rear anti-collision beam, so as to simplify the rear vehicle body structure, reduce the number of parts and components, reduce the manufacturing cost, and at the same time improve the strength of the rear vehicle body structure, thereby improving the use effect of the rear vehicle body structure.

[0096] In addition, the rear section 102 of the rear floor longitudinal beam is made of extruded aluminum profile, and a longitudinal beam rear section collapse hole 1021 is provided on the rear section 102 of the rear floor longitudinal beam. The uniform cross section of the extruded aluminum profile and the collapse guide of the collapse hole can also be used to improve the collapse energy absorption effect of the rear section 102 of the rear floor longitudinal beam. At the same time, the rear section 102 of the rear floor longitudinal beam replaces the energy absorption box, eliminating the rear energy absorption box structure in the traditional vehicle, achieving a simplified structure, which is conducive to the lightweight design of the entire vehicle.

[0097] Embodiment 2

[0098] This embodiment relates to a vehicle, in which the vehicle body is provided with the rear body structure of the first embodiment.

[0099] Among them, as a preferred implementation form, Fig.15 , Fig.16 and Fig.19 As shown, in this embodiment, a battery pack shell 8 integrated with the body is provided in the middle part of the body, the battery pack shell 8 has a frame 801, and a front floor panel 802 connected to the top of the frame 801, the rear floor is connected to the frame 801 through a plurality of connecting units 9, and the front end of the rear floor is overlapped on the front floor panel 802.

[0100] It is worth noting that the above-mentioned battery pack housing 8 is integrated with the vehicle body, which can improve the assembly efficiency and accuracy of the vehicle body and effectively reduce the production cost of the vehicle body. The various structures of the vehicle body not mentioned in this embodiment can refer to the common structural parts in the prior art and will not be described in detail here.

[0101] In addition, in the prior art, the battery pack is generally assembled on the vehicle body at a later stage and is limited by the space layout requirements in the vehicle body structure, which results in limitations in the internal space of the existing battery pack. However, the above-mentioned battery pack shell 8 is integrated on the vehicle body. Compared with the existing battery pack, it can also increase the installation space of the battery module in the battery pack shell 8 and improve the endurance performance of the vehicle.

[0102] In the specific implementation, as a further improvement, sill beams 7 are respectively provided on both sides of the battery pack housing 8 along the width direction of the vehicle body, and the sill beams 7 on both sides are arranged along the length direction of the vehicle body to improve the structural strength of the battery pack housing 8.

[0103] As an exemplary structure for overlapping the rear floor panel and the front floor panel 802, Figure 3 , Figure 4 and Fig.15 As shown, in this embodiment, both sides of the front end of the rear floor are respectively formed with forward extending connecting beams 5, and the connecting beams 5 on both sides are overlapped on the front floor panel 802. The overlap form can improve the stability of the connection between the rear floor and the middle structure of the vehicle body, and the setting of the connecting beams 5 also facilitates the connection between the rear floor and the side parts of the vehicle body, thereby effectively improving the strength and stability of the overall structure of the vehicle body.

[0104] In specific implementation, the front ends of the connecting beams 5 on both sides are preferably connected with a reinforcing crossbeam 6, and the top of the battery pack housing 8 is preferably connected with a rear seat mounting crossbeam 803, which is arranged side by side on one side of the reinforcing crossbeam 6. By providing the reinforcing crossbeam 6, the structural strength of the front end of the rear floor can be improved, and at the same time, it can also cooperate with the connecting beams 5 on both sides and the front crossbeam 3 of the rear floor to form a fourth force transmission ring to improve the transmission and dispersion effect of the collision force transmitted by the central channel reinforcement rib 804 during a head-on collision, thereby improving the structural strength of the overall body structure.

[0105] Combination Figure 3 and Fig.15 As shown, the bottom of the above-mentioned reinforcing beam 6 (along the vehicle body height direction) is also provided with a reinforcing rib avoidance groove 601 corresponding to the middle channel reinforcing rib 804 to avoid interference with the assembly between the rear floor and the battery pack shell 8.

[0106] When the rear seat mounting crossbeam 803 is implemented, preferably, Fig.19As shown, it includes a support beam 8031 ​​arranged on the top of the battery pack shell 8, and a seat mounting beam 8032 arranged on the top of the support beam 8031, and the specific structural design of the support beam 8031 ​​and the seat mounting beam 8032 can be set and adjusted accordingly according to the actual installation requirements of the seat, such as making the length dimension of the seat mounting beam 8032 in the width direction of the vehicle body smaller than the length dimension of the support beam 8031, or adding reinforcing ribs in the seat mounting beam 8032, etc.

[0107] In this embodiment, in addition to the above-mentioned form in which both the reinforcing beam 6 and the rear seat mounting beam 803 are arranged in the vehicle body, it is also possible to only arrange the reinforcing beam 6 or the rear seat mounting beam 803 in the vehicle body according to the actual strength and layout requirements of the vehicle body structure.

[0108] When only the reinforcing crossbeam 6 is connected between the front ends of the connecting beams 5 on both sides, and the rear seat installation crossbeam 803 is not provided on the battery pack housing 8, a rear seat installation point 301 is provided on the reinforcing crossbeam 6, so as to improve the structural strength of the front end of the rear floor and support and install the rear seats. When only the rear seat installation crossbeam 803 is connected to the top of the battery pack housing 8, and no reinforcing crossbeam 6 is provided between the front ends of the connecting beams 5 on both sides, the rear seat installation crossbeam 803 is connected to the connecting beams 5 on both sides, so as to improve the structural strength of the front end of the rear floor while supporting and installing the rear seats.

[0109] As a preferred embodiment, in the specific implementation, Fig.17 , Fig.18 , Fig.19 and Fig. 20 As shown, the above-mentioned multiple connection units 9 are arranged at intervals along the width direction of the vehicle body, and each connection unit 9 connects the rear floor and the battery pack housing 8 together along the height direction of the vehicle body.

[0110] As a preferred exemplary structure of the above-mentioned connection unit 9, the connection unit 9 includes a shell connection seat 901 fixedly connected to the rear end surface of the battery pack shell 8, and a connection groove 9021 formed at the bottom of the rear floor, one end of the shell connection seat 901 is embedded in the connection groove 9021, and is detachably connected to the rear floor through a third connecting member.

[0111] Such a configuration can make the rear floor connection structure simple, easy to implement and operate, and the rear floor can be detachably arranged, which can also facilitate the maintenance and replacement of the rear floor in the future. The housing connection seat 901 is embedded in the connection groove 9021, which can also play a good positioning role and improve the convenience of the connection operation. At the same time, by overlapping the front end of the rear floor with the front floor panel 802 and using it in conjunction with the connection unit 9, the connection strength between the rear floor and the middle part of the vehicle body can be improved, thereby improving the connection reliability between the two.

[0112] It is worth mentioning that the connection units 9 of this embodiment are preferably arranged in three spaces spaced apart along the width direction of the vehicle body, and the connection units 9 are evenly spaced apart to achieve a more stable connection between the rear floor and the battery pack housing 8 .

[0113] As a preferred embodiment, the shell connecting seat 901 of this embodiment is located on the rear end surface of the battery pack shell 8, a downwardly convex connecting block 902 is formed at the bottom of the rear floor, and the connecting groove 9021 is located at the bottom of the connecting block 902. Such a configuration can effectively improve the convenience of assembly between the shell connecting seat 901 and the rear floor.

[0114] Of course, in the specific implementation, in addition to being set to three evenly and spaced apart, the above-mentioned connection units 9 can also be set and adjusted accordingly according to the actual connection requirements of the rear floor, so as to obtain a better connection effect, such as being set to two spaced apart or being set to four evenly and spaced apart.

[0115] In addition, the third connecting member of this embodiment is preferably a bolt, so that the connection between the housing connecting seat 901 and the rear floor is more reliable and the connection operation is simple, and at the same time, the overall manufacturing cost of the vehicle body can be reduced. The specific number of the third connecting members can be set and adjusted accordingly according to the actual connection requirements between the housing connecting seat 901 and the rear floor, such as two, three or four at intervals.

[0116] In the specific implementation of this embodiment, in combination with Figure 4 and Figure 5 As shown, as a preferred embodiment, the shell connecting seat 901 of this embodiment is located on the rear end surface of the battery pack shell 8, the bottom of the rear floor is formed with a downwardly convex connecting block 902, and the connecting groove 9021 is located at the bottom of the connecting block 902. Such a configuration can effectively improve the convenience of assembly between the shell connecting seat 901 and the rear floor.

[0117] It is worth noting that the rear end face of the battery pack shell 8 refers to the rear end face in the length direction of the vehicle body, and the bottom of the rear floor and the connecting block 902 refers to the bottom in the height direction of the vehicle body.

[0118] The above-mentioned shell connecting seat 901 includes a shell connecting seat main body 9011 connected to the rear end surface of the battery pack shell 8 at one end, and an embedding portion 9012 arranged at the other end of the shell connecting seat main body 9011, and the connecting groove 9021 has a structural design for embedding the embedding portion 9012, and the shell connecting seat 901 is preferably integrally formed with the battery pack shell 8 to reduce the manufacturing cost while ensuring the structural stability of the connecting unit 9.

[0119] In addition, refer to Fig.15 , Fig.16 and Fig.19 As shown, preferably, a convex middle channel reinforcement rib 804 is integrally formed on the upper end surface of the front floor panel 802, the middle channel reinforcement rib 804 extends along the length direction of the vehicle body, and is located in the middle part of the front floor panel 802 along the width direction of the vehicle body, and a groove 303 is formed at the front end of the rear floor, and the rear end of the middle channel reinforcement rib 804 is embedded in the groove 303.

[0120] By providing the middle channel reinforcement rib 804, the structural strength of the battery pack shell 8 can be improved, and when the car collides head-on, the collision force on the battery pack shell 8 can be transmitted to the rear floor, thereby enhancing the force transmission and dispersion effects. At the same time, embedding the rear end of the middle channel reinforcement rib 804 into the groove 303 can also facilitate the convenient assembly between the rear floor and the battery pack shell 8, thereby making the rear structure of the vehicle body have a better use effect.

[0121] In the present embodiment, preferably, a limiting rib 8021 abutting against the front end of the rear floor is integrally formed on the front floor panel 802, so as to facilitate improving the assembly convenience between the battery pack shell 8 and the rear floor, and a gap is formed between the end of the rear end of the middle channel reinforcement rib 804 and the inner wall of the groove 303, which can also avoid damage to the rear floor caused by a hard collision between the middle channel reinforcement rib 804 and the inside of the groove 303 when a minor collision occurs in the vehicle.

[0122] As a preferred exemplary structure of the middle channel reinforcement rib 804, in a specific implementation, as Fig.16 and Fig.19 As shown, the middle channel reinforcement ribs 804 are arranged in parallel, and the rear ends of the middle channel reinforcement ribs 804 are connected together through the rear end plate 805, and the above-mentioned gap is formed between the rear end plate 805 and the inner wall of the groove 303. As a further configuration, the rear floor is formed with support ribs 304 located at the rear side of the groove 303, and the support ribs 304 are arranged in a one-to-one correspondence with the middle channel reinforcement ribs 804. Such a configuration is conducive to the transmission of the collision force on the middle channel reinforcement ribs 804 to the rear floor, and can improve the force transmission and dispersion effect of the vehicle body structure.

[0123] It is worth mentioning that, in the specific implementation, the value of the above-mentioned gap is preferably set at 0.5-10 mm, so as to ensure the convenience of assembly of the middle channel reinforcement rib 804 while facilitating obtaining a better distance setting between the middle channel reinforcement rib 804 and the inner wall of the groove 303, such as 1 mm, 2 mm, 2.5 mm or 3 mm.

[0124] The above-mentioned middle channel reinforcement ribs 804 are preferably arranged in parallel along the width direction of the vehicle body, and the middle channel reinforcement ribs 804 are evenly spaced, and the support ribs 304 are also preferably arranged in a one-to-one correspondence with the middle channel reinforcement ribs 804. Of course, the number and arrangement of the middle channel reinforcement ribs 804 can also be set and adjusted accordingly according to the actual strength requirements and force transmission requirements of the battery pack shell 8, such as being set to three or five evenly spaced.

[0125] At the same time, as a preference, the height of the rear end of each of the above-mentioned middle channel reinforcement ribs 804 is gradually increased in the direction pointing to the rear floor, so as to further improve the effect of transmitting the collision force to the rear floor. Here, the front end of each middle channel reinforcement rib 804 can also be set to the same structural design as its rear end, that is, the front end of each middle channel reinforcement rib 804 is connected together through the front end plate, that is, at the same time, the height of the front end is gradually increased in the direction facing away from the rear floor, so as to improve the structural strength of the front end of the middle channel reinforcement rib 804 and further improve the effect of transmitting the collision force on the middle channel reinforcement rib 804.

[0126] The vehicle of this embodiment is provided with the rear body structure of the first embodiment, which can simplify the rear body structure, reduce the number of parts, and lower the production cost. At the same time, it can also improve the strength of the rear body structure and the anti-collision energy absorption performance.

[0127] In addition, by overlapping the front end of the rear floor with the front floor panel 802 and providing a connection unit 9 between the rear floor and the frame 801, the connection strength between the rear floor and the middle part of the vehicle body can be increased, thereby improving the connection reliability between the two.

[0128] In addition, the middle channel reinforcement rib 804 is provided to improve the structural strength of the battery pack housing 8, and when the vehicle is in a head-on collision, the collision force on the battery pack housing 8 is transmitted to the rear floor, thereby improving the transmission and dispersion effect of the force. The provision of the limiting rib 8021 is conducive to improving the assembly convenience between the battery pack housing 8 and the rear floor, and the gap setting can prevent the middle channel reinforcement rib 804 and the inside of the groove 303 from causing damage to the rear floor when a minor collision occurs to the vehicle.

[0129] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A vehicle, characterized in that: The rear part of the vehicle body comprises an integrally die-cast rear floor, a rear section of a rear floor longitudinal beam (102) and a rear anti-collision beam; The rear floor is formed with rear floor longitudinal beams (1) arranged on both sides, a rear wheel cover (2) connected to the rear floor longitudinal beams (1) on each side, and a plurality of rear floor cross beams connected between the rear floor longitudinal beams (1) on both sides, and the rear ends of the rear floor longitudinal beams (1) on both sides are respectively connected to the rear sections (102) of the rear floor longitudinal beams; The rear anti-collision beam comprises an anti-collision beam body (12) with a hollow interior, and two connecting seats (13) connected to the front end surface of the anti-collision beam body (12), and the rear anti-collision beam is directly connected to the rear sections (102) of the rear floor longitudinal beams on both sides via the two connecting seats (13); A battery pack housing (8) integrated with the vehicle body is provided in the middle of the vehicle body, the battery pack housing (8) having a frame (801) and a front floor panel (802) connected to the top of the frame (801), the rear floor being connected to the frame (801) via a plurality of connection units (9), and the front end of the rear floor being overlapped on the front floor panel (802); An upwardly convex middle channel reinforcement rib (804) is integrally formed on the upper end surface of the front floor panel (802), the middle channel reinforcement rib (804) extends along the length direction of the vehicle body and is located in the middle of the front floor panel (802) along the width direction of the vehicle body, and a groove (303) is formed at the front end of the rear floor, and the rear end of the middle channel reinforcement rib (804) is embedded in the groove (303); The front floor panel (802) is integrally formed with a limiting rib (8021) that abuts against the front end of the rear floor, and a gap is formed between the end of the rear end of the middle channel reinforcement rib (804) and the inner wall of the groove (303).

2. The vehicle according to claim 1, characterized in that: The anti-collision beam body (12) adopts an extruded aluminum structure, and the cross section of the anti-collision beam body (12) is rectangular, and the ratio between the width and the height of the cross section of the anti-collision beam body (12) is not less than 0.

7.

3. The vehicle according to claim 2, characterized in that: The middle portion of the anti-collision beam body (12) is arched backwards so that the anti-collision beam body (12) is in an arc shape.

4. The vehicle according to claim 2, characterized in that: A reinforcing plate (1200) is integrally formed inside the anti-collision beam body (12), and the reinforcing plate (1200) is connected between the front side wall (1201) and the rear side wall (1202) of the anti-collision beam body (12).

5. The vehicle according to claim 4, characterized in that: The reinforcing plate (1200) is a plurality of pieces arranged in an upper and lower interval pattern; and / or, the reinforcing plate (1200) is provided with an anti-collision beam collapse hole (12001), and the anti-collision beam collapse hole (12001) penetrates at least one of the upper side wall (1203) and the lower side wall (1204) of the anti-collision beam body (12).

6. The vehicle according to claim 1, characterized in that: The connection seat (13) comprises a connection box (1301) having a blind hole formed therein, and an anti-collision beam connection plate (1302) fixedly connected to the connection box (1301); a longitudinal beam connection plate (1022) is fixedly connected to the rear end of the rear section (102) of the rear floor longitudinal beam; the anti-collision beam connection plate (1302) is detachably connected to the longitudinal beam connection plate (1022) via a first connection member.

7. The vehicle according to claim 1, characterized in that: The connecting seat (13) is connected to the front side wall (1201) of the anti-collision beam body (12) through a screw connection structure, and a connecting through hole (12021) arranged corresponding to the screw connection structure is provided on the rear side wall (1202) of the anti-collision beam body (12).

8. The vehicle according to claim 1, characterized in that: The rear section (102) of the rear floor longitudinal beam is made of extruded aluminum profile, and a plurality of longitudinal beam rear section collapse holes (1021) are provided on the rear section (102) of the rear floor longitudinal beam.

9. The vehicle according to claim 1, characterized in that: A plug-in slot (1023) is formed at the rear end of the rear floor longitudinal beam (1), and the front end of the rear section (102) of the rear floor longitudinal beam is inserted into the corresponding plug-in slot (1023) and is detachably connected to the rear floor longitudinal beam (1) via a second connecting member.

10. The vehicle according to any one of claims 1 to 9, characterized in that: The rear floor cross beam comprises a rear floor front cross beam (3) connected between the front ends of the rear floor longitudinal beams (1) on both sides, and a rear floor rear cross beam (4) connected between the rear ends of the rear floor longitudinal beams (1) on both sides, and the edge of the rear wheel cover (2) is formed with a rear wheel cover flange (201) connected to the rear floor longitudinal beams (1); The rear floor front cross beam (3), the rear floor rear cross beam (4) and the rear floor longitudinal beams (1) on both sides are connected to form a first force transmission ring, and the rear floor longitudinal beams (1) on each side are connected to the rear wheel cover flange (201) on the corresponding side to form a second force transmission ring.

11. The vehicle according to claim 10, characterized in that: The rear wheel covers (2) on both sides are connected to the shelf crossbeam (10) via connecting plates (11) respectively, and the rear floor, the shelf crossbeam (10) and the connecting plates (11) on both sides are connected to form a third force transmission ring.

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