Middle and rear floor assembly and vehicle

Abstract

The utility model discloses a middle-rear floor assembly and a vehicle, the middle-rear floor assembly comprises a middle-rear floor, the middle-rear floor is an integrated floor, and the middle-rear floor comprises a middle floor and a rear floor which are distributed in sequence; the multiple cross beams are transversely arranged on the middle rear floor, at least one cross beam is arranged on the middle rear floor in a penetrating mode, and cavities are formed in the positions, above and below the middle rear floor, of the middle rear floor and the at least one cross beam respectively. Therefore, the middle and rear floors in the middle and rear floor assembly are integrated floors, the strength of the middle and rear floors can be improved, the problem of stress concentration at the welding part of the middle and rear floors can be solved, and the force transmission of the middle and rear floors can be more uniform and balanced. Furthermore, the middle rear floor and the at least one cross beam respectively form a cavity above and below the middle rear floor, so that the strength and the deformation resistance of the middle rear floor can be improved, a sound insulation effect can be achieved, noise transmission is reduced, and the comfort of the interior of the vehicle can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicles, in particular to a middle and rear floor assembly and a vehicle. Background Art

[0002] In the prior art, the center floor and the rear floor in the center-rear floor assembly are two pieces of material with the same thickness, which are welded together after being formed separately. This structure has caused waste of resources, increased the cost and cycle of vehicle development, and is not suitable for reducing costs and increasing efficiency.

[0003] The welding position of the middle floor and the rear floor is located above the rear seat installation position and below the rear subframe front installation nut fixing plate position, both of which are stress points, and the welding position is also a stress concentration point. When a collision occurs, this position is prone to failure and affects the safety of passengers. In addition, when the middle floor and the rear floor are welded, errors will accumulate. The rear boundary position of the rear floor plays a vital role in the size of the vehicle, so the welding form of the middle and rear floor increases the size error of the vehicle. In addition, the strength of the traditional middle and rear floor assembly is insufficient, and the middle and rear floor assembly is prone to deformation. Utility Model Content

[0004] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model proposes a middle-rear floor assembly, in which the middle-rear floor is an integrated floor, which can not only increase the strength of the middle-rear floor, but also eliminate the problem of stress concentration at the welding part of the middle floor and the rear floor, so that the force transmission of the middle-rear floor can be more uniform and balanced, and the production process can be shortened and the production cost can be reduced. In addition, the middle-rear floor and at least one crossbeam form cavities above and below the middle-rear floor, respectively, which can increase the strength and deformation resistance of the middle-rear floor, and can also play a role in sound insulation, reduce the spread of noise, and thus improve the comfort inside the vehicle.

[0005] The utility model further provides a vehicle.

[0006] According to the first aspect of the utility model, the center-rear floor assembly includes: a center-rear floor, which is an integrated floor, and includes: a center floor and a rear floor distributed in sequence; a plurality of cross beams, which are respectively arranged transversely on the center-rear floor, and at least one cross beam passes through the center-rear floor, and the center-rear floor and the at least one cross beam respectively form cavities above and below the center-rear floor.

[0007] Thus, the middle and rear floor in the middle and rear floor assembly is an integral floor, which can not only increase the strength of the middle and rear floor, but also eliminate the stress concentration problem at the welding part of the middle floor and the rear floor, so that the force transmission of the middle and rear floor can be more uniform and balanced, and the production process can be shortened and the production cost can be reduced. In addition, cavities are respectively formed above and below the middle and rear floor and at least one cross beam, which can increase the strength and anti-deformation ability of the middle and rear floor, and can also play a role in sound insulation, reducing the transmission of noise, thereby improving the comfort inside the vehicle.

[0008] According to some embodiments of the present invention, the cross beam includes: a front cross beam disposed on the middle floor; a middle cross beam disposed on the rear floor and behind the front cross beam; a rear cross beam disposed on the rear floor and behind the middle cross beam; wherein, the middle floor penetrates through the middle cross beam, and cavities are respectively formed above and below the middle floor and the middle cross beam, and / or the rear floor penetrates through the middle cross beam, and cavities are respectively formed above and below the rear floor and the rear cross beam.

[0009] According to some embodiments of the present invention, both the middle cross beam and the rear cross beam include: an upper beam plate connected to the upper surface of the rear floor and forming the cavity with the rear floor; a lower beam plate connected to the lower surface of the rear floor and below the upper beam plate, and the lower beam plate forms the cavity with the rear floor.

[0010] According to some embodiments of the present invention, the middle and rear floor assembly further includes: at least one first strengthening beam extending longitudinally and connecting between the front cross beam and the middle cross beam.

[0011] According to some embodiments of the present invention, the middle and rear floor assembly further includes: a longitudinal beam longitudinally disposed on the middle and rear floor, and a plurality of the cross beams are connected between the longitudinal beams on both sides; at least one second strengthening beam extending transversely and connecting between the longitudinal beams on both sides, and the second strengthening beam is disposed crosswise with the first strengthening beam.

[0012] According to some embodiments of the present invention, the middle and rear floor assembly further includes: at least one third strengthening beam extending longitudinally, and at least one of the third strengthening beams is connected behind the rear cross beam and extends to the rear edge of the rear floor.

[0013] According to some embodiments of the present utility model, both the first reinforcing beam and the third reinforcing beam are multiple. The multiple first reinforcing beams and the multiple third reinforcing beams are respectively arranged at intervals in the transverse direction, and the number of the third reinforcing beams is greater than or equal to the number of the first reinforcing beams.

[0014] According to some embodiments of the present utility model, the middle and rear floor assembly further includes: longitudinal beams longitudinally arranged on the middle and rear floor, and a plurality of cross beams connected between the longitudinal beams on both sides; a rear subframe nut fixing plate arranged on the longitudinal beam and located on the transverse side of the middle cross beam.

[0015] According to some embodiments of the present utility model, the middle and rear floor is an integral metal plate.

[0016] A vehicle according to an embodiment of the second aspect of the present utility model includes: the above-mentioned middle and rear floor assembly.

[0017] The additional aspects and advantages of the present utility model will be partly given in the following description, partly become obvious from the following description, or be understood through the practice of the present utility model. Description of the Drawings

[0018] The above and / or additional aspects and advantages of the present utility model will become obvious and easy to understand from the description of the embodiments in conjunction with the following drawings, wherein:

[0019] Figure 1 is a schematic structural diagram of a middle and rear floor assembly according to an embodiment of the present utility model;

[0020] Figure 2 is a schematic structural diagram of the top of a middle and rear floor assembly according to an embodiment of the present utility model;

[0021] Figure 3 is a schematic structural diagram of the bottom of a middle and rear floor assembly according to an embodiment of the present utility model;

[0022] Figure 4 is a schematic structural diagram of a middle and rear floor assembly containing a first reinforcing beam according to an embodiment of the present utility model;

[0023] Figure 5 is a schematic diagram of the force transmission in the longitudinal direction of a middle and rear floor assembly according to an embodiment of the present utility model;

[0024] Figure 6 is a schematic diagram of the force transmission in the transverse direction of a middle and rear floor assembly according to an embodiment of the present utility model;

[0025] Figure 7 is a schematic diagram of a middle and rear floor assembly containing a cavity according to an embodiment of the present utility model;

[0026] Figure 8 It is a schematic structural view of the middle and rear floor according to an embodiment of the present utility model.

[0027] Reference numerals:

[0028] 100, middle and rear floor assembly;

[0029] 10, middle and rear floor; 11, middle floor; 12, rear floor;

[0030] 20, cross beam; 21, front cross beam; 22, middle cross beam; 23, rear cross beam; 24, upper beam plate; 25, lower beam plate;

[0031] 30, cavity;

[0032] 40, first strengthening beam;

[0033] 50, longitudinal beam;

[0034] 60, second strengthening beam;

[0035] 70, third strengthening beam;

[0036] 80, rear subframe nut fixing plate. Detailed implementation manners

[0037] The embodiments of the present utility model will be described in detail below. The embodiments described with reference to the drawings are exemplary. The embodiments of the present utility model will be described in detail below.

[0038] Reference will be made below to Figures 1-8 describe the middle and rear floor assembly 100 according to an embodiment of the present utility model.

[0039] Refer to Figure 1 As shown, the middle and rear floor assembly 100 of the first aspect embodiment of the present utility model includes: a middle and rear floor 10 and a plurality of cross beams 20. The middle and rear floor 10 is an integral floor. The middle and rear floor 10 includes: a middle floor 11 and a rear floor 12 that are sequentially distributed. The plurality of cross beams 20 are respectively arranged horizontally on the middle and rear floor 10. The middle and rear floor 10 penetrates at least one cross beam 20. Cavities 30 are respectively formed above and below the middle and rear floor 10 and at least one cross beam 20.

[0040] Specifically, in the traditional middle and rear floor assembly, the middle floor and the rear floor are two parts with the same material thickness. After being formed separately, they are welded together. This structure has caused waste of resources, increased the development cost and cycle of the whole vehicle, and is not suitable for cost reduction and efficiency improvement.

[0041] The welding position of the middle floor and the rear floor is located above the rear seat installation position and below the rear subframe front installation nut fixing plate position, both of which are stress points, and the welding position is also a stress concentration point. When a collision occurs, this position is prone to failure and affects the safety of passengers. In addition, when the middle floor and the rear floor are welded, errors will be accumulated. The rear boundary position of the rear floor plays a vital role in the size of the whole vehicle, so the welding of the middle and rear floors increases the size error of the whole vehicle.

[0042] In addition, the strength of the conventional center-rear floor assembly is insufficient, and the center-rear floor assembly is also prone to deformation in the longitudinal or lateral direction.

[0043] Therefore, it is necessary to optimize the design of the center rear floor assembly 100. The center rear floor 10 is set as an integrated floor. The center rear floor 10 mainly consists of a center floor 11 and a rear floor 12. The center floor 11 and the rear floor 12 are arranged along the longitudinal direction of the vehicle, and the longitudinal direction is the front-back direction. The integrated center rear floor 10 can not only increase the strength of the center rear floor 10, but also eliminate the problem of stress concentration at the welding part of the center floor 11 and the rear floor 12, so that the force transmission of the center rear floor 10 can be more uniform and balanced.

[0044] In addition, the integrated middle and rear floor 10 can reduce the accumulation of manufacturing errors, thereby improving the accuracy of the vehicle size, and can also reduce the number and types of punching and welding fixtures, thereby shortening the production process and reducing production costs.

[0045] Furthermore, a plurality of cross beams 20 are respectively disposed transversely on the center rear floor 10 , where the transverse direction is the left-right direction of the vehicle, so that the transverse strength and rigidity of the center rear floor assembly 100 can be further improved, thereby preventing the center rear floor assembly 100 from being deformed transversely.

[0046] In addition, at least one cross beam 20 is passed through the middle rear floor 10, that is, the middle rear floor 10 passes through the body of at least one cross beam 20, and the middle rear floor 10 passes through the body of the cross beam 20 to divide the cross beam 20 into two upper and lower parts. In this way, the strength and stability of the overall structure of the middle rear floor assembly 100 can be enhanced, so that the load generated by the vehicle during driving can be withstood.

[0047] Furthermore, the center rear floor 10 and at least one cross beam 20 form cavities 30 above and below the center rear floor 10, respectively. The design of the cavity 30 can reduce the use of materials, thereby reducing the weight of the overall structure and improving the fuel efficiency and performance of the vehicle.

[0048] In addition, the cavity 30 can also improve the rigidity of the middle and rear floor assembly 100 to a certain extent, thereby ensuring the structural strength of the middle and rear floor assembly 100 in the longitudinal and transverse directions, enhancing the stability and safety of the vehicle during driving, and also playing a role in sound insulation, reducing the transmission of noise, and thus improving the comfort inside the vehicle.

[0049] Therefore, the middle and rear floor 10 in the middle and rear floor assembly 100 is an integral floor, which can not only increase the strength of the middle and rear floor 10, but also eliminate the problem of stress concentration at the welding part of the middle floor 11 and the rear floor 12, so that the force transmission of the middle and rear floor 10 is more uniform and balanced, and the production process can be shortened and the production cost can be reduced. In addition, cavities 30 are respectively formed above and below the middle and rear floor 10 and at least one cross beam 20, which can increase the strength and anti-deformation ability of the middle and rear floor 10, and also play a role in sound insulation, reducing the transmission of noise, and thus improving the comfort inside the vehicle.

[0050] According to a specific embodiment of the present invention, as Figure 1 shown, the cross beam 20 includes a front cross beam 21, a middle cross beam 22 and a rear cross beam 23. The front cross beam 21 is arranged on the middle floor 11, the middle cross beam 22 is arranged on the rear floor 12, and the middle cross beam 22 is located behind the front cross beam 21. The rear cross beam 23 is arranged on the rear floor 12, and the rear cross beam 23 is located behind the middle cross beam 22. Among them, the middle floor 11 penetrates through the middle cross beam 22, and cavities 30 are respectively formed above and below the middle floor 11 and the middle cross beam 22, and / or the rear floor 12 penetrates through the middle cross beam 22, and cavities 30 are respectively formed above and below the rear floor 12 and the rear cross beam 23.

[0051] Specifically, the front cross beam 21 is horizontally arranged on the middle floor 11, so that the front cross beam 21 can increase the transverse strength of the middle floor 11.

[0052] In addition, since the rear floor 12 is relatively long, the rear floor 12 is provided with a middle cross beam 22 and a rear cross beam 23, and the middle cross beam 22 and the rear cross beam 23 are arranged at intervals in the front-rear direction of the rear floor 12, so as to further improve the transverse and longitudinal strength and stiffness of the rear floor 12.

[0053] Furthermore, the middle floor 11 penetrates through the middle cross beam 22, and cavities 30 are respectively formed above and below the middle floor 11 and the middle cross beam 22, so as to improve the transverse and longitudinal strength of the middle cross beam 22 on the rear floor 12 and also reduce noise.

[0054] In addition, the middle floor 11 can penetrate through the middle cross beam 22, or the rear floor 12 can penetrate through the middle cross beam 22, which can be selected according to the actual situation.

[0055] When the middle floor 11 penetrates the middle crossbeam 22, cavities 30 are respectively formed above and below the middle floor 11 and the middle crossbeam 22. In this way, the strength and stiffness of the middle floor 11 in the longitudinal and transverse directions can be further improved, and the sound insulation effect of the middle floor 11 can also be enhanced.

[0056] When the rear floor 12 penetrates the middle crossbeam 22 and the rear floor 12 also penetrates the rear crossbeam 23, cavities 30 are respectively formed above and below the rear floor 12 and the rear crossbeam 23. In this way, the strength and stiffness of the rear floor 12 in the longitudinal and transverse directions can be further improved, and the sound insulation effect of the rear floor 12 can also be enhanced.

[0057] According to some embodiments of the present invention, as Figure 7 shown, both the middle crossbeam 22 and the rear crossbeam 23 include: an upper beam plate 24 and a lower beam plate 25. The upper beam plate 24 is connected to the upper surface of the rear floor 12, and a cavity 30 is formed between the upper beam plate 24 and the rear floor 12. The lower beam plate 25 is connected to the lower surface of the rear floor 12, and the lower beam plate 25 is located below the upper beam plate 24. A cavity 30 is formed between the lower beam plate 25 and the rear floor 12.

[0058] Among them, a cavity 30 is formed between the upper beam plate 24 and the upper surface of the rear floor 12, which can improve the strength between the upper beam plate 24 and the rear floor 12, thereby preventing the upper beam plate 24 and the rear floor 12 from deforming in the longitudinal direction of the vehicle, and can also play a role in absorbing the noise of the rear floor 12.

[0059] Furthermore, a cavity 30 is formed between the lower beam plate 25 and the lower surface of the rear floor 12, which can improve the strength between the lower beam plate 25 and the rear floor 12, thereby preventing the lower beam plate 25 and the rear floor 12 from deforming in the longitudinal direction of the vehicle, and can further play a role in absorbing the noise of the rear floor 12.

[0060] According to some embodiments of the present invention, as Figure 4 and Figure 5 shown, the middle and rear floor assembly 100 further includes: at least one first reinforcing beam 40. At least one first reinforcing beam 40 extends longitudinally and is connected between the front crossbeam 21 and the middle crossbeam 22. In this way, the longitudinal structural strength between the front crossbeam 21 and the middle crossbeam 22 can be improved, and the longitudinal force transmission channels between the front crossbeam 21 and the middle crossbeam 22 can also be increased, so that the middle and rear floor assembly 100 can be connected more firmly and reliably, and the longitudinal force transmission of the middle and rear floor assembly 100 can be more uniform.

[0061] Moreover, at least one first reinforcing beam 40 is located below the middle rear floor 10, and at least one first reinforcing beam 40 and the lower surface of the middle floor 11 form a cavity 30, so that the anti-deformation ability of the middle floor 11 in the longitudinal direction can be improved, and the sound insulation effect of the middle floor 11 can also be improved.

[0062] According to some embodiments of the present invention, as Figure 4 and Figure 5 shown, the middle rear floor assembly 100 further includes: a longitudinal beam 50 and at least one second reinforcing beam 60. The longitudinal beam 50 is longitudinally arranged on the middle rear floor 10, a plurality of cross beams 20 are connected between the two longitudinal beams 50 on both sides, at least one second reinforcing beam 60 extends transversely, and at least one second reinforcing beam 60 is connected between the two longitudinal beams 50 on both sides. The second reinforcing beam 60 and the first reinforcing beam 40 are arranged crosswise.

[0063] Among them, a plurality of cross beams 20 are connected between the two longitudinal beams 50 on both sides, so that the transverse strength and stiffness of the middle rear floor assembly 100 can be increased. Moreover, at least one second reinforcing beam 60 extends transversely, so that the transverse strength of the middle rear floor assembly 100 can be further increased. Further, the second reinforcing beam 60 and the first reinforcing beam 40 are arranged crosswise, that is, the second reinforcing beam 60 and the first reinforcing beam 40 can be arranged perpendicular to each other, or the second reinforcing beam 60 and the first reinforcing beam 40 can be arranged at an angle. In this way, the second reinforcing beam 60 is transversely connected to the two longitudinal beams 50 on both sides, and the first reinforcing beam 40 extends longitudinally, so that the transverse and longitudinal strengths of the middle rear floor 10 can be increased.

[0064] Moreover, at least one second reinforcing beam 60 and the lower surface of the middle floor 11 enclose a cavity 30, so that the middle rear floor 10 can be prevented from deforming transversely and longitudinally.

[0065] According to some embodiments of the present invention, as Figure 4 and Figure 5 shown, the middle rear floor assembly 100 further includes: at least one third reinforcing beam 70. At least one third reinforcing beam 70 extends longitudinally, at least one third reinforcing beam 70 is connected behind the rear cross beam 23, and at least one third reinforcing beam 70 extends to the rear edge of the rear floor 12.

[0066] Among them, at least one third reinforcing beam 70 is connected behind the rear cross beam 23, and the third reinforcing beam 70 extends longitudinally, so that the longitudinal strength behind the rear cross beam 23 can be increased.

[0067] Moreover, at least one third reinforcing beam 70 and the lower surface of the rear floor 12 enclose a cavity 30, so that the deformation in the longitudinal direction behind the rear cross beam 23 can be prevented.

[0068] According to specific embodiments of the present invention, as Figure 4As shown, both the first reinforcing beam 40 and the third reinforcing beam 70 are multiple. The multiple first reinforcing beams 40 and the multiple third reinforcing beams 70 are respectively arranged at intervals in the transverse direction, and the number of the third reinforcing beams 70 is greater than or equal to the number of the first reinforcing beams 40.

[0069] Specifically, when there are two first reinforcing beams 40 arranged on the middle floor 11, the two first reinforcing beams 40 extend longitudinally on the middle floor 11, and the two first reinforcing beams 40 are arranged at intervals in the transverse direction on the middle floor 11. There is one second reinforcing beam 60 arranged transversely on the middle floor 11, and one second reinforcing beam 60 is arranged perpendicular to the two first reinforcing beams 40. There are three third reinforcing beams 70 arranged on the rear floor 12, the three third reinforcing beams 70 are arranged at intervals in the transverse direction, and the three third reinforcing beams 70 extend longitudinally.

[0070] As Figure 5 shown, when the middle and rear floor assembly 100 is subjected to a longitudinal impact force, due to the arrangement of the two first reinforcing beams 40 longitudinally and the three third reinforcing beams 70, multiple branches can be formed longitudinally on the middle and rear floor 10. In this way, the force received longitudinally by the middle and rear floor 10 can be made more uniform, eliminating the problem of poor body strength caused by stress concentration or partial load. The force transmission is changed from linear transmission to surface transmission with multiple branches, which can disperse the problem of large local stress and stress concentration in the structure, and can also improve the strength and stiffness of the middle and rear floor 10 longitudinally.

[0071] As Figure 6 shown, when the middle and rear floor assembly 100 is subjected to a transverse impact force, the transverse force is mainly transmitted through the two side longitudinal beams 50. Due to the arrangement of one second reinforcing beam 60, the front cross beam 21, the middle cross beam 22, and the rear cross beam 23, multiple branches can be formed transversely on the middle and rear floor 10. In this way, the force received transversely by the middle and rear floor 10 can be made more uniform, eliminating the problem of poor body strength caused by stress concentration or partial load. The force transmission is changed from linear transmission to surface transmission with multiple branches, changing the force transmission path from point connection to surface connection, so that the strength and stiffness of the middle and rear floor 10 transversely can be improved, and thus the safety performance of the whole vehicle can be enhanced.

[0072] According to some embodiments of the present invention, the middle and rear floor assembly 100 further includes: longitudinal beams 50 and a rear subframe nut fixing plate 80. The longitudinal beams 50 are longitudinally arranged on the middle and rear floor 10, multiple cross beams 20 are connected between the two side longitudinal beams 50, the rear subframe nut fixing plate 80 is arranged on the longitudinal beams 50, and the rear subframe nut fixing plate 80 is located on the transverse side of the middle cross beam 22.

[0073] Among them, the rear subframe nut fixing plate 80 is not only connected to the longitudinal beam 50, but also connected to the middle cross beam 22. The rear subframe nut fixing plate 80 is aligned with the middle cross beam 22, so that the vertical force of the middle and rear floor assembly 100 is supported by the original longitudinal beam 50 and changed to be supported by both the cross beam 20 and the longitudinal beam 50, thereby improving the strength and stiffness of the middle and rear floor assembly 100 and meeting the high-strength requirements of the vehicle.

[0074] According to some embodiments of the present invention, the middle and rear floor 10 is an integral metal plate.

[0075] In this way, it can bear the loads and impacts generated during the driving of the vehicle, and can also reduce the use of welding and connecting parts, thereby reducing the overall weight. The metal plate can be processed to enhance durability and extend the service life, thus reducing the need for maintenance and replacement.

[0076] The vehicle according to the second aspect embodiment of the present invention includes: the middle and rear floor assembly 100 of the above embodiment.

[0077] The setting of the integral middle and rear floor 10 in the middle and rear floor assembly 100 can eliminate the problem of stress concentration at the welding parts of the middle floor 11 and the rear floor 12, and make the force transmission of the middle and rear floor 10 more uniform and balanced.

[0078] The cavities 30 formed by the middle floor 11, the rear floor 12, multiple cross beams 20 and multiple reinforcing beams in the middle and rear floor assembly 100 can not only increase the strength of the middle and rear floor assembly 100 in the transverse and longitudinal directions, but also prevent the middle and rear floor assembly 100 from deforming in the transverse and longitudinal directions, thereby improving the anti-deformation ability of the middle and rear floor assembly 100 and also improving the sound insulation effect of the middle and rear floor assembly 100.

[0079] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and is 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 should not be construed as a limitation of the present invention.

[0080] In the description of this specification, the descriptions with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples", etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic descriptions of the above terms do not necessarily refer to the same embodiment or example.

[0081] Although the embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present utility model, and the scope of the present utility model is defined by the claims and their equivalents.

Claims

1. A mid-rear floor assembly, characterized in that: include: A middle and rear floor, the middle and rear floor is an integrated floor, and the middle and rear floor comprises: a middle floor and a rear floor which are sequentially distributed; A plurality of cross beams are respectively arranged transversely on the middle rear floor, at least one cross beam passes through the middle rear floor, and the middle rear floor and the at least one cross beam respectively form cavities above and below the middle rear floor.

2. The middle and rear floor assembly according to claim 1, characterized in that: The crossbeam comprises: a front crossbeam, the front crossbeam being arranged on the middle floor; a middle cross beam, the middle cross beam being arranged on the rear floor and being located behind the front cross beam; a rear cross beam, the rear cross beam being arranged on the rear floor and being located behind the middle cross beam; Wherein, the middle floor is penetrated by the middle cross beam, the middle floor and the middle cross beam respectively form cavities above and below the middle floor, and / or The middle cross beam passes through the rear floor, and the rear floor and the rear cross beam respectively form cavities above and below the rear floor.

3. The middle and rear floor assembly according to claim 2, characterized in that: The middle cross beam and the rear cross beam both include: an upper beam plate, the upper beam plate being connected to the upper surface of the rear floor plate and forming the cavity with the rear floor plate; A lower beam plate is connected to the lower surface of the rear floor and is located below the upper beam plate, and the lower beam plate and the rear floor form the cavity.

4. The middle and rear floor assembly according to claim 2, characterized in that: Also includes: At least one first reinforcement beam is provided, and the at least one first reinforcement beam extends in the longitudinal direction and is connected between the front cross beam and the middle cross beam.

5. The middle and rear floor assembly according to claim 4, characterized in that: Also includes: A longitudinal beam, the longitudinal beam being longitudinally arranged on the middle and rear floor, and a plurality of the cross beams being connected between the longitudinal beams on both sides; At least one second reinforcing beam, at least one second reinforcing beam extends in the transverse direction and is connected between the longitudinal beams on both sides, and the second reinforcing beam is arranged crosswise with the first reinforcing beam.

6. The center-rear floor assembly according to claim 4, characterized in that: Also includes: At least one third reinforcing beam, at least one of the third reinforcing beams extends in the longitudinal direction, at least one of the third reinforcing beams is connected to the rear of the rear cross beam and extends to the rear edge of the rear floor.

7. The center-rear floor assembly according to claim 6, characterized in that: There are multiple first reinforcing beams and multiple third reinforcing beams, and the multiple first reinforcing beams and the multiple third reinforcing beams are respectively arranged at intervals in the transverse direction, and the number of the third reinforcing beams is greater than or equal to the number of the first reinforcing beams.

8. The center-rear floor assembly according to claim 2, characterized in that: Also includes: A longitudinal beam, the longitudinal beam being longitudinally arranged on the middle and rear floor, and a plurality of the cross beams being connected between the longitudinal beams on both sides; A rear sub-frame nut fixing plate is arranged on the longitudinal beam and located on one lateral side of the middle cross beam.

9. The middle and rear floor assembly according to claim 1, characterized in that: The middle and rear floor is an integrated metal plate.

10. A vehicle, characterized in that: include: The center-rear floor assembly according to any one of claims 1 to 9.

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