Cover plate assembly, floor structure, vehicle body framework assembly and vehicle

Abstract

A cover plate assembly, a floor structure (10), a vehicle body framework assembly (100) and a vehicle (1000). The cover plate assembly comprises: a cover plate (2) and a reinforcing beam (3), wherein the cover plate (2) covers an access port (111) formed in a floor (1), the reinforcing beam (3) extends in the length direction of the vehicle (1000) and abuts against the side of the cover plate (2) facing away from the access port (111), and two ends of the reinforcing beam (3) are respectively connected to floor crossbeams (41, 42). The structural strength of a vehicle body framework (40) at the access port (111) is improved, so that the vehicle body framework (40) can reliably support two rows of seats, meeting the collision safety requirements for vehicles, and improving the vehicle safety performance; and the sealing performance of the vehicle body framework assembly (100) is improved, the reliability of the vehicle (1000) is improved, noise in a cab is reduced, and the overall performance of the vehicle (1000) is improved.

Description

Cover plate assembly, floor structure, vehicle body frame assembly and vehicle

[0001] Cross-reference to related applications

[0002] The present application is based on and claims priority to Chinese Patent Application No. 202410439051.8, filed on April 11, 2024, the entire contents of which are incorporated herein by reference. TECHNICAL FIELD

[0003] The present application relates to the field of vehicles, in particular to a cover plate assembly, a floor structure, a vehicle body frame assembly and a vehicle. BACKGROUND

[0004] Compared with traditional fuel vehicles, a pure electric vehicle increases a charging and power distribution device dedicated to the pure electric vehicle, which is used to provide high-voltage power for the vehicle. Since the charging and power distribution device needs to be disassembled and repaired after sale, for the charging and power distribution device arranged at the front of the rear floor (under the second-row seats), a maintenance opening needs to be designed at the front of the rear floor to facilitate disassembly and assembly after sale.

[0005] In the related patent document (CN218536871U), by means of the scheme of opening a maintenance opening on the rear floor and setting a cover plate at the maintenance opening, a floor cross beam is arranged on the front and rear sides of the maintenance opening to reserve installation space for the charging and power distribution device and prevent the floor cross beam from blocking the maintenance opening and hindering the maintenance of the charging and power distribution device. However, this will result in a large distance between the floor cross beams on the front and rear sides of the maintenance opening, causing the structural strength of the vehicle body frame at the maintenance opening to be weak, and there is a safety hazard when the vehicle is in a collision. SUMMARY

[0006] In order to solve the above technical problems or at least partially solve the above technical problems, the present application provides a cover plate assembly, a floor structure, a vehicle body frame assembly and a vehicle.

[0007] The present application discloses a cover plate assembly, comprising: a cover plate arranged at a maintenance opening of a floor; a reinforcing beam extending along the length direction of the vehicle and abutting against one side of the cover plate away from the maintenance opening, and the two ends of the reinforcing beam are connected with two adjacent floor cross beams of a vehicle body frame, respectively.

[0008] Optionally, the cover plate has a matching surrounding edge connected with the floor in the circumferential area of the maintenance opening.

[0009] Optionally, the matching surrounding edge has a sealing groove facing the floor, and a sealing element is arranged in the sealing groove.

[0010] Optionally, the part of the cover plate located on both sides of the reinforcing beam is arranged symmetrically along the center line of the reinforcing beam.

[0011] Optionally, the cover plate is provided with a reinforcing structure.

[0012] Optionally, the reinforcing beam has a reinforcing cavity opening towards the cover plate.

[0013] The application further discloses a floor structure, comprising: a floor arranged on two adjacent floor cross beams of a vehicle body framework and having an access hole; and a cover plate assembly, wherein the cover plate assembly is the cover plate assembly provided by the above-mentioned embodiments, the cover plate covers the access hole, and two ends of the reinforcing beam are connected with the floor cross beams respectively.

[0014] Optionally, the cover plate is detachably connected with the floor; and / or the two ends of the reinforcing beam are detachably connected with the floor cross beams respectively.

[0015] Optionally, the floor is provided with a hole surrounding edge in the circumferential direction of the access hole, the cover plate is provided with a matching surrounding edge, the matching surrounding edge covers the hole surrounding edge, the floor further comprises a hole folding edge, the hole folding edge is connected with the hole surrounding edge, and the hole folding edge extends towards a direction away from the cover plate of the floor.

[0016] Optionally, the floor structure further comprises: a reinforcing surrounding edge connected with the hole surrounding edge.

[0017] Optionally, the access floor comprises a top plate and a side surrounding plate, the access hole is formed in the top plate, the top plate is arranged in the height direction of the vehicle and is spaced apart from the floor cross beams, the side surrounding plate is connected with the circumferential edge of the top plate and is connected with the floor cross beams, the side surrounding plate has a supporting boss protruding towards a side away from the top plate, and the supporting boss connects the floor cross beams and the reinforcing beam.

[0018] The application further discloses a vehicle body framework assembly, comprising: a vehicle body framework, wherein the vehicle body framework comprises at least two floor cross beams, the two floor cross beams are a rear floor front cross beam and a rear floor rear cross beam respectively, the rear floor front cross beam is provided with at least one first mounting point for supporting a seat, and the rear floor rear cross beam is provided with at least one second mounting point for supporting a seat; and a floor structure, wherein the floor structure is the floor structure provided by the above-mentioned embodiments, the floor of the floor structure is arranged on the rear floor front cross beam and the rear floor rear cross beam, the floor structure has at least one first mounting point in the extension direction of the reinforcing beam of the floor structure, and / or has at least one second mounting point in the extension direction of the reinforcing beam of the floor structure.

[0019] The application further discloses a vehicle, comprising: the vehicle body framework assembly provided by the above-mentioned disclosure.

[0020] The technical scheme provided by the embodiment of the present application has the following advantages compared with the prior art.

[0021] According to the cover plate assembly provided by the embodiment of the present application, the reinforcing beam is arranged to connect the floor cross beam and abut against the cover plate, so that the structural strength of the vehicle body framework at the access hole can be improved, the vehicle body framework can reliably support the second-row seats, the collision safety requirements of the vehicle can be met, the safety performance of the vehicle can be improved, the cover plate can be reliably fixed relative to the floor by abutting against the cover plate, the access hole can be reliably sealed by the cover plate, dust and rainwater can be effectively prevented from flowing into the cab through the access hole, the reliability of the vehicle can be improved, the noise transmitted into the cab through the access hole can be reduced, the noise in the cab can be reduced, and the overall performance of the vehicle can be improved.

[0022] According to the vehicle body framework assembly provided by the embodiment of the present application, the floor structure is arranged, so that the structural strength of the vehicle body framework at the access hole can be improved, the vehicle body framework can reliably support the second-row seats, the collision safety requirements of the vehicle can be met, the safety performance of the vehicle can be improved, the sealing performance of the vehicle body framework assembly can be improved, the reliability of the vehicle can be improved, the noise in the cab can be reduced, and the overall performance of the vehicle can be improved.

[0023] According to the vehicle provided by the embodiment of the present application, the vehicle body framework assembly is arranged, the structure is reliable, the sealing effect is good, the collision safety requirements of the vehicle can be met, the safety performance of the vehicle can be improved, the reliability of the vehicle can be improved, the noise in the cab can be reduced, and the overall performance of the vehicle can be improved. BRIEF DESCRIPTION OF DRAWINGS

[0024] The accompanying drawings, which are incorporated into and form a part of the specification, illustrate embodiments consistent with the present disclosure and, together with the description, serve to explain the principles of the disclosure.

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure or the prior art, the accompanying drawings needed to be used in the embodiments or the prior art description will be briefly introduced. Obviously, for those skilled in the art, other drawings can also be obtained from these drawings without creative labor.

[0026] FIG. 1 is an exploded view of a vehicle according to some embodiments of the present application;

[0027] FIG. 2 is a top view of the vehicle in FIG. 1;

[0028] FIG. 3 is a top view of the vehicle in FIG. 1, in which the access hole is opened;

[0029] FIG. 4 is a perspective view of the floor in FIG. 1;

[0030] Fig. 5 is a perspective view of the floor of Fig. 1 from another perspective;

[0031] Fig. 6 is an exploded view of the cover plate and the reinforcing beam of Fig. 1;

[0032] Fig. 7 is a structural schematic view of the floor structure of Fig. 2. DETAILED DESCRIPTION

[0033] In order to enable a more complete understanding of the above-mentioned objects, features and advantages of the present application, the following will give a further description of the schemes of the present application. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0034] In the following description, a large number of specific details are set forth in order to facilitate a thorough understanding of the present application, but the present application can also be implemented in other manners different from those described herein; obviously, the embodiments described in the specification are only a part of the embodiments of the present application, and not all the embodiments.

[0035] Referring to Figs. 1-7, the present application discloses a floor structure 10, comprising a floor 1 and a cover plate assembly, the floor 1 is arranged on two adjacent floor cross beams of a vehicle body frame 40, for example, the two adjacent floor cross beams can be a rear floor front cross beam 41 and a rear floor rear cross beam 42.

[0036] The floor 1 has an access opening 111; for example, a charging and power distribution device 50 of a vehicle 1000 is connected to the vehicle body frame 40, and the charging and power distribution device 50 is arranged between the rear floor front cross beam 41 and the rear floor rear cross beam 42, the access opening 111 is arranged opposite to the charging and power distribution device 50, and the size of the access opening 111 is greater than the size of the charging and power distribution device 50, so that the charging and power distribution device 50 can be taken out from the access opening 111 for maintenance or replacement.

[0037] Referring to Figs. 1-7, the present application also discloses a cover plate assembly, comprising a cover plate 2 and a reinforcing beam 3.

[0038] The cover plate 2 covers the access opening 111; for example, the cover plate 2 is detachably connected to the floor 1 by fasteners; alternatively, the fasteners can be bolts or screws.

[0039] The reinforcing beam 3 extends along the length direction of the vehicle 1000, and the reinforcing beam 3 abuts against a side of the cover plate 2 away from the access opening 111, and the two ends of the reinforcing beam 3 are respectively connected to the floor cross beams. For example, the reinforcing beam 3 can be detachably connected to the floor cross beams by fasteners; alternatively, the fasteners can be bolts or screws.

[0040] By setting the reinforcing beam 3 to connect the floor cross beam, the structural strength of the vehicle body frame 40 at the access hole 111 can be improved, so that the vehicle body frame 40 can reliably support the second-row seats, meet the collision safety requirements of the vehicle 1000, and improve the safety performance of the vehicle 1000.

[0041] By setting the reinforcing beam 3 to abut against the cover plate 2, the cover plate 2 can be reliably fixed relative to the floor 1, so that the cover plate 2 can reliably seal the access hole 111, effectively prevent dust and rain from flowing into the cab through the access hole 111, improve the reliability of the vehicle 1000, reduce the noise transmitted into the cab through the access hole 111, reduce the noise in the cab, and improve the overall performance of the vehicle 1000.

[0042] Furthermore, by setting the reinforcing beam 3 to abut against the cover plate 2, the abutting force exerted by the reinforcing beam 3 on the cover plate 2 can effectively prevent the cover plate 2 from being warped relative to the floor 1, and when connecting the cover plate 2 and the floor 1, fasteners do not need to be provided near the reinforcing beam 3, the number of fasteners used to connect the cover plate 2 can be reduced, and the disassembly efficiency can be improved.

[0043] For example, the rear floor front cross beam 41 has at least one first mounting point for supporting the seats, and at least one first mounting point in the extension direction of the reinforcing beam 3, so that the structural strength of the vehicle body frame 40 at the first mounting point can be improved, the support effect of the vehicle body frame 40 on the seats can be improved, and the collision safety requirements of the vehicle 1000 can be met.

[0044] For example, the rear floor rear cross beam 42 has at least one second mounting point for supporting the seats, and at least one second mounting point in the extension direction of the reinforcing beam 3 of the floor structure 10. In this way, the structural strength of the vehicle body frame 40 at the second mounting point can be improved, the support effect of the vehicle body frame 40 on the seats can be improved, and the collision safety requirements of the vehicle 1000 can be met.

[0045] Referring to FIG. 6, according to some embodiments provided by the present application, the cover plate 2 is provided with a reinforcing structure, for example, the reinforcing structure can include at least one reinforcing rib, the reinforcing structure can also include at least one convex bump 23 protruding from the surface of the cover plate 2 in a direction away from the charging and power distribution device 50, the reinforcing structure can also include at least one recess 24 recessed from the surface of the cover plate 2 towards the charging and power distribution device 50, and the reinforcing structure can also include at least two of the reinforcing rib, the convex bump 23 and the recess 24.

[0046] By arranging the reinforcing structure on the cover plate 2, the structural strength of the cover plate 2 can be improved, and the reliability of the structure of the cover plate 2 can be improved; when the cover plate 2 is arranged on the access hole 111, the structural strength between the two floor cross beams, the cover plate 2 and the reinforcing beam 3 is improved, and the structural strength of the vehicle body frame 40 at the access hole 111 is improved, so that the vehicle body frame 40 can reliably support the second-row seats, meet the collision safety requirements of the vehicle 1000, and improve the safety performance of the vehicle 1000.

[0047] Referring to FIG. 7, according to some embodiments provided by the present application, the cover plate 2 has a matching surrounding edge 21, and the matching surrounding edge 21 is connected with the floor 1 at the circumferential area of the access hole 111.

[0048] For example, the floor 1 is formed with a mouth surrounding edge 112 at the circumference of the access hole 111, and the matching surrounding edge 21 is arranged on the mouth surrounding edge 112. The floor 1 further includes a mouth folding edge 113 connected with the mouth surrounding edge 112 and extending away from the cover plate 2 of the floor 1.

[0049] For example, the mouth surrounding edge 112 is provided with a threaded hole 114, and the matching surrounding edge 21 is provided with a matching hole matched with the threaded hole 114. A fastener is adapted to be arranged in the matching hole and the threaded hole 114 to connect the floor 1 and the cover plate 2. Alternatively, the mouth surrounding edge 112 can be connected with a nut 115 on the side away from the cover plate 2, and a through hole is arranged corresponding to the nut 115 to form the threaded hole 114.

[0050] By arranging the mouth folding edge 113, the structural strength of the floor 1 at the access hole 111 can be improved, and the degree of deformation of the mouth surrounding edge 112 under stress or the deformation of the mouth surrounding edge 112 under stress can be reduced or avoided, so that the mouth surrounding edge 112 can be reliably attached together with the matching surrounding edge 21, and the sealing effect between the floor 1 and the cover plate 2 can be improved.

[0051] Referring to FIG. 4, according to some embodiments provided by the present application, the floor structure 10 further includes a reinforcing surrounding edge 14 connected with the mouth surrounding edge 112. In this way, the structural strength of the floor 1 at the access hole 111 can be further improved, and the reliability of the floor structure 10 can be improved.

[0052] Referring to FIG. 6 and FIG. 7, according to some embodiments provided by the present application, the matching surrounding edge 21 has a sealing groove 22 opening towards the mouth surrounding edge 112, and a sealing element is arranged in the sealing groove 22, for example, the thickness of the sealing element is greater than the depth of the sealing groove 22. In this way, the sealing effect between the floor 1 and the cover plate 2 can be improved, dust and rainwater can be effectively prevented from flowing into the cab through the access hole 111, the reliability of the vehicle 1000 can be improved, the noise transmitted into the cab through the access hole 111 can be reduced, the noise in the cab can be reduced, and the overall performance of the vehicle 1000 can be improved.

[0053] For example, the cover plate 2 can be stamped from sheet metal, and by providing the sealing groove 22, the cover plate 2 can form a convexity in the direction away from the sealing groove 22 when the sealing groove 22 is bent, which can improve the structural strength of the cover plate 2, so that the force of the reinforcing beam 3 against the cover plate 2 can be evenly distributed on the matching side plate, so that the cover plate 2 is evenly stressed, effectively reducing the phenomenon of the cover plate 2 being warped relative to the floor 1, improving the sealing effect of the floor structure 10, and improving the reliability of the floor structure 10.

[0054] Referring to FIGS. 1-5, according to some embodiments provided by the present application, the floor 1 includes a top plate 11 and a side plate 12, the top plate 11 is provided with an access opening 111, and the top plate 11 is spaced apart from the floor beam in the height direction of the vehicle 1000, the side plate 12 is connected to the circumferential edge of the top plate 11, and the side plate 12 is connected to the floor beam. For example, the floor 1 can also include a connecting flange 13, the connecting flange 13 is connected to one end of the side plate 12 away from the top plate 11, and the connecting flange 13 is connected to the rear floor rear beam 42 by welding.

[0055] The side plate 12 has a support boss 121 protruding towards the side away from the top plate 11, and the support boss 121 connects the floor beam and the reinforcing beam 3. For example, in the height direction of the vehicle 1000, the top surface of the support boss 121 is generally flush with the surface of the top plate 11. By connecting the reinforcing beam 3 to the support boss 121, the connection point of the floor 1 to the reinforcing beam 3 can be reduced when the reinforcing beam 3 is connected, so that the worker can more conveniently connect the reinforcing beam 3 to the floor beam through the support boss 121, improving the disassembly efficiency.

[0056] Furthermore, the floor 1 can be stamped from sheet metal, and by providing the support boss 121, the support boss 121 can play a reinforcing role for the floor 1, improving the structural strength of the floor 1, and when the vehicle 1000 is in a collision, the floor 1 can reliably transmit the collision force, improving the reliability of the floor structure 10.

[0057] Referring to FIGS. 1, 2 and 6, according to some embodiments provided by the present application, the portions of the cover plate 2 on both sides of the reinforcing beam 3 are symmetrically arranged along the center line of the reinforcing beam 3. That is, the reinforcing beam 3 is arranged at the middle of the cover plate 2 in the width direction of the vehicle 1000, for example, the symmetry plane between the portions of the cover plate 2 on both sides of the reinforcing beam 3 is perpendicular to the width direction of the vehicle 1000. This can make the resisting force of the reinforcing beam 3 against the cover plate 2 cover a larger range, so that the cover plate 2 can be connected to the floor 1 only at the two ends in the width direction of the vehicle 1000 by fasteners, to prevent the cover plate 2 from being warped relative to the floor 1, and when the access is rectangular, fasteners can be provided at the four corners of the cover plate 2 to connect the cover plate 2 to the floor 1, thereby reducing the number of fasteners used to connect the cover plate 2 to the floor 1, reducing the workload of the worker, and improving the disassembly efficiency of the cover plate 2.

[0058] For example, the reinforcing beam 3 and the cover plate 2 are integrated; alternatively, the reinforcing beam 3 and the cover plate 2 can be connected as a whole by welding. In this way, the reinforcing beam 3 and the cover plate 2 can be installed on the floor 1 at the same time, and the reinforcing beam 3 and the cover plate 2 can be removed from the floor 1 at the same time, thereby improving the efficiency of disassembling the reinforcing beam 3 and the cover plate 2.

[0059] According to some embodiments provided by the present application, the reinforcing beam 3 has a reinforcing cavity opening towards the cover plate 2, so that the reinforcing beam 3 and the cover plate 2 together define a sealed cavity, thereby improving the structural strength of the reinforcing beam 3 and the cover plate 2, enabling the reinforcing beam 3 to reliably transmit the impact force, improving the reliability of the floor structure 10, and the structure is simple, which can reduce the production cost of the reinforcing beam 3.

[0060] Referring to FIGS. 1-3, the present application also discloses a vehicle body frame assembly 100, comprising: a vehicle body frame 40 and a floor structure 10, the vehicle body frame 40 at least comprising two floor cross beams, the two floor cross beams being a rear floor front cross beam 41 and a rear floor rear cross beam 42 respectively; the floor structure 10 being the floor structure 10 provided according to the above disclosure, and the floor 1 of the floor structure 10 being arranged on the rear floor front cross beam 41 and the rear floor rear cross beam 42.

[0061] According to the vehicle body frame assembly 100 provided by the embodiments of the present application, by arranging the above-mentioned floor structure 10, the structural strength of the vehicle body frame 40 at the inspection opening 111 can be improved, so that the vehicle body frame 40 can reliably support the second-row seat, meet the collision safety requirements of the vehicle 1000, and improve the safety performance of the vehicle 1000; moreover, the sealing performance of the vehicle body frame assembly 100 can be improved, the reliability of the vehicle 1000 can be improved, the noise in the cab can be reduced, and the overall performance of the vehicle 1000 can be improved.

[0062] Referring to FIGS. 1-3, according to some embodiments provided by the present application, the rear floor front cross beam 41 has at least one first mounting point for supporting the seat, and at least one first mounting point in the extension direction of the reinforcing beam 3, so that the structural strength of the vehicle body frame 40 at the first mounting point can be improved, and the supporting effect of the vehicle body frame 40 on the seat can be improved, thereby meeting the collision safety requirements of the vehicle 1000.

[0063] Referring to FIGS. 1-3, according to some embodiments provided by the present application, the rear floor rear cross beam 42 has at least one second mounting point for supporting the seat, and at least one second mounting point in the extension direction of the reinforcing beam 3 of the floor structure 10. In this way, the structural strength of the vehicle body frame 40 at the second mounting point can be improved, and the supporting effect of the vehicle body frame 40 on the seat can be improved, thereby meeting the collision safety requirements of the vehicle 1000.

[0064] With reference to FIGS. 1-3, the application further discloses a vehicle 1000, comprising the vehicle body frame assembly 100 provided according to the above disclosure. For example, the vehicle 1000 can be a car.

[0065] According to the vehicle 1000 provided by the embodiments of the application, by arranging the vehicle body frame assembly 100, the structure is reliable, the sealing effect is good, the collision safety requirement of the vehicle 1000 can be met, the safety performance of the vehicle 1000 is improved, the reliability of the vehicle 1000 is improved, the noise in the cab is reduced, and the overall performance of the vehicle 1000 is improved.

[0066] It should be noted that, in this document, relational terms such as "first" and "second", and the like, are used solely to distinguish one entity or action from another entity or action, without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus. In addition, the term "about" is used herein to introduce a degree of error or inaccuracy, and is intended to encompass variations that can exist in the values that are predetermined or derived, either from testing, calibration, or inherent in a process, system, or apparatus.

[0067] The above description is merely that of specific embodiments of the application, making it possible for those skilled in the art to understand or implement the application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the application. Accordingly, the application is not intended to be limited to the embodiments described herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A cover plate assembly, comprising: A cover plate covering the inspection opening on the floor; The reinforcing beam extends along the length direction of the vehicle and stops at a side of the cover plate away from the inspection port, and the two ends of the reinforcing beam are respectively connected to two adjacent floor beams of the vehicle body frame. 2 . The cover plate assembly according to claim 1 , wherein the cover plate has a mating edge connected to the floor at a peripheral area of ​​the access opening. 3 . The cover assembly according to claim 2 , wherein the mating edge has a sealing groove facing the floor, and a sealing member is provided in the sealing groove.

4. The cover plate assembly according to any one of claims 1 to 3, wherein portions of the cover plate located on both sides of the reinforcement beam are symmetrically arranged along a center line of the reinforcement beam. The cover plate assembly according to any one of claims 1 to 4, wherein a reinforcement structure is provided on the cover plate. 6 . The cover plate assembly according to claim 1 , wherein the reinforcement beam has a reinforcement cavity opening toward the cover plate.

7. A floor structure comprising: A floor panel, which is provided on two adjacent floor beams of the vehicle body frame and has an access opening; A cover plate assembly, wherein the cover plate assembly is the cover plate assembly according to any one of claims 1 to 6, wherein the cover plate is arranged on the inspection opening, and the two ends of the reinforcing beam are respectively connected to the floor beam.

8. The floor structure according to claim 7, wherein the cover plate is detachably connected to the floor; and / or both ends of the reinforcement beam are detachably connected to the floor cross beam.

9. The floor structure according to claim 7 or 8, wherein the floor is formed with a mouth edge around the circumference of the inspection port, the cover plate has a matching edge, the matching edge cover is arranged on the mouth edge, and the floor also includes a mouth folding edge, the mouth folding edge is connected to the mouth edge, and the mouth folding edge extends toward the floor away from the cover plate.

10. The floor structure according to claim 9, further comprising: A reinforced edge is connected to the mouth edge.

11. The floor structure according to any one of claims 7 to 10, wherein the floor comprises a top panel and side panels, the top panel is formed with the inspection opening, and the top panel is spaced apart from the floor cross beam in the height direction of the vehicle, the side panels are connected to the circumferential edge of the top panel and are connected to the floor cross beam, the side panels have a support boss protruding toward a side away from the top panel, and the support boss connects the floor cross beam and the reinforcing beam.

12. A vehicle body frame assembly, comprising: A vehicle body frame, the vehicle body frame including at least two floor cross beams, the two floor cross beams being a front cross beam of a rear floor and a rear cross beam of a rear floor, the front cross beam of the rear floor having at least one first mounting point for supporting a seat, and the rear cross beam of the rear floor having at least one second mounting point for supporting a seat; A floor structure, wherein the floor structure assembly is a floor structure according to any one of claims 7 to 11, wherein the floor of the floor structure is arranged on a front cross beam of a rear floor and a rear cross beam of a rear floor, and has at least one first mounting point in the extension direction of the reinforcing beam of the floor structure, and / or has at least one second mounting point in the extension direction of the reinforcing beam of the floor structure.

13. A vehicle comprising: The vehicle body frame assembly according to claim 12.

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