Vehicle body rear floor assembly, five-seat vehicle and four-seat vehicle

Abstract

The embodiment of the utility model relates to the technical field of vehicle body structures, and discloses a vehicle body rear floor assembly, a five-seat vehicle and a four-seat vehicle. The vehicle body rear floor assembly comprises a rear floor structure and a reinforcing support; wherein the reinforcing bracket is connected to the rear floor structure; a central control bracket is detachably connected to the reinforcing bracket; the central control support is used for connecting a rear-row central control box. According to the technical scheme, the reinforcing support is arranged on the rear floor structure to form a fixed floor state, and a rear-row seat or a central control support used for installing a rear-row central control box can be selectively connected to the reinforcing support subsequently according to the requirement of vehicle type configuration. Therefore, the structural strength of the rear floor of the vehicle body is enhanced through the reinforcing support, meanwhile, four-seat configuration and five-seat configuration of the vehicle can be met through a fixed floor state, material complexity is reduced, sorting operation is omitted, and in-field and out-field transportation cost and labor cost are reduced.

Description

Technical Field

[0001] The embodiments of the present application relate to the technical field of vehicle body structures, and in particular to a vehicle body rear floor assembly, a five-seat vehicle, and a four-seat vehicle. Background Art

[0002] With the increasing diversification of vehicle models, more and more manufacturers have begun to adopt a model with four-seat and five-seat configurations to meet the needs of different user groups. Among them, the rear row of the four-seat model is only equipped with two seats on the left and right. On the one hand, it can improve the riding comfort and avoid the back row being crowded due to a large number of passengers; on the other hand, it is convenient to configure various in-vehicle equipment for leisure and entertainment in the back row, such as seat massage, entertainment audio and video system control, in-vehicle refrigerator, etc. The rear row of the five-seat model is equipped with three seats on the left, middle and right to meet the needs of multiple people.

[0003] For four-seat models, the rear-row onboard equipment needs to be integrated into the rear center console. In this way, the rear floor of the vehicle needs to be designed with a skeleton structure for installing the rear center console. For five-seat models, in order to meet the riding comfort requirements of the middle seat in the rear row, the rear floor of the vehicle needs to reserve enough space under the middle seat in the rear row. Based on the above situation, the rear floor of the vehicle with both four-seat and five-seat configurations currently needs to adopt two floor states. Since the rear floor of the vehicle is supplied in an integrated manner, the increase in floor states will increase the on-site and off-site transportation costs and labor costs, and it is easy to cause misinstallation due to sorting errors. Utility Model Content

[0004] In view of this, an embodiment of the present application provides a vehicle body rear floor assembly, in which a reinforcement bracket is arranged on the rear floor structure to form a fixed floor state. Subsequently, the rear seats or the central control bracket for installing the rear central control box can be selectively connected to the reinforcement bracket according to the needs of the vehicle model configuration, thereby satisfying the four-seat configuration and five-seat configuration of the vehicle respectively through a fixed floor state.

[0005] In order to achieve the above-mentioned purpose, the technical solution of the embodiment of the present application is implemented as follows:

[0006] In a first aspect, an embodiment of the present application provides a vehicle body rear floor assembly, including a rear floor structure and a reinforcement bracket; the reinforcement bracket is connected to the rear floor structure; a central control bracket is detachably connected to the reinforcement bracket; and the central control bracket is used to connect to the rear center control box.

[0007] The vehicle body rear floor assembly provided in the embodiment of the present application has a reinforcing bracket installed and fixed on the rear floor structure, and the reinforcing bracket can be used to enhance the structural strength of the vehicle body rear floor; the structural assembly formed by the installed reinforcing bracket and the rear floor structure can form a fixed floor state, and the structural assembly can be integrated and supplied directly to the final assembly workshop for final assembly. Compared with the structural assembly in two floor states, the complexity of materials is greatly reduced, and the sorting operation is omitted, thereby reducing the transportation cost and labor cost inside and outside the field. Moreover, since there is only one floor state, it is not easy to cause misassembly. In the subsequent final assembly process, the corresponding components can be selectively connected to the reinforcing bracket according to the needs of the vehicle model configuration; when the vehicle model is configured as a four-seat vehicle, the central control bracket can be installed on the reinforcing bracket to provide a certain height installation foundation for the rear center control box, so that the rear center control box can be fixed at a preset position in the rear row of the vehicle by installing it on the central control bracket; when the vehicle model is configured as a five-seat vehicle, the rear seats can be directly installed on the reinforcing bracket. Since no other bracket structure is set above the reinforcing bracket at this time, sufficient space can be reserved under the middle seat of the rear seat to ensure the riding comfort of the middle seat. Based on the above arrangement, a fixed floor state can satisfy the four-seat configuration and the five-seat configuration of the vehicle respectively.

[0008] In a possible implementation of the present application, the reinforcement bracket is welded to the rear floor structure.

[0009] In a possible implementation of the present application, at least one protrusion and / or at least one recess is formed on the surface of the reinforcing bracket.

[0010] In a possible implementation of the present application, a first threaded locking piece is further included, and the central control bracket is locked to the reinforcement bracket through the first threaded locking piece.

[0011] In a possible implementation of the present application, a second threaded locking piece is further included, and the rear center console box is locked to the center console bracket through the second threaded locking piece.

[0012] In a possible implementation of the present application, the central control bracket is provided with a first through hole, and the reinforcement bracket is provided with a second through hole; the rear floor assembly also includes a first connecting column, the first connecting column is provided with a first screw hole, the first connecting column is connected to a side surface of the reinforcement bracket facing away from the central control bracket, and the first screw hole is opposite to the first through hole and the second through hole; the first threaded locking piece passes through the first through hole and the second through hole in sequence and is threadedly connected to the first screw hole.

[0013] In a possible implementation of the present application, the central control bracket is provided with a third through hole; the vehicle body rear floor assembly also includes a second connecting column, the second connecting column is provided with a second screw hole, the second connecting column is connected to the central control bracket, and the second screw hole is opposite to the third through hole; the second threaded locking member passes through the third through hole and is threadedly connected to the second screw hole.

[0014] In a possible implementation of the present application, a protrusion is formed on the surface of the reinforcing bracket, and a first accommodating area is formed between the concave side of the protrusion and the rear floor structure; the first threaded locking fixture locks the central control bracket to the protrusion, and the end of the first threaded locking fixture is located in the first accommodating area and has a preset distance with the rear floor structure.

[0015] In a possible implementation of the present application, at least two protrusions are formed on the surface of the reinforcement bracket, and the central control bracket is mounted on the at least two protrusions.

[0016] In a possible implementation of the present application, a second accommodating area is formed between at least two spaced-apart raised portions; when a rear seat is connected to the reinforcement bracket, the second accommodating area is used to fill the seat foam; when a central control bracket is connected to the reinforcement bracket, the second accommodating area is used for the passage of the wiring harness of the rear central control box.

[0017] In a second aspect, an embodiment of the present application provides a five-seater vehicle, comprising rear seats and a vehicle body rear floor assembly provided in any embodiment of the first aspect above; wherein the rear seats are connected to a reinforcement bracket of the vehicle body rear floor assembly.

[0018] In the third aspect, an embodiment of the present application provides a four-seater vehicle, including a central control bracket, a rear central control box and a vehicle body rear floor assembly provided by any embodiment of the first aspect above; wherein the rear central control box is connected to the central control bracket; and the central control bracket is detachably connected to the reinforcement bracket of the vehicle body rear floor assembly.

[0019] The five-seater vehicle and the four-seater vehicle provided in the embodiments of the present application, since they include the vehicle body rear floor assembly provided in any one of the embodiments of the first aspect above, have the same technical effect, that is, the reinforcing bracket is installed and fixed on the rear floor structure, and the reinforcing bracket can be used to enhance the structural strength of the vehicle body rear floor; the structural assembly formed by the installed reinforcing bracket and the rear floor structure can constitute a fixed floor state, and the structural assembly can be supplied in an integrated manner and directly transported to the final assembly workshop for final assembly. Compared with the structural assemblies in two floor states, the complexity of the materials is greatly reduced, the sorting operation is omitted, thereby reducing the on-site and off-site transportation costs and labor costs, and since there is only one floor state, it is not easy to cause misinstallation. In the subsequent assembly process, the corresponding components can be selectively connected to the reinforcement bracket according to the needs of the vehicle configuration; when the vehicle is configured as a four-seater vehicle, the center console bracket can be installed on the reinforcement bracket to provide a certain height installation foundation for the rear center console box, so that the rear center console box can be fixed at the preset position of the rear row of the vehicle by installing it on the center console bracket; when the vehicle is configured as a five-seater vehicle, the rear seats can be directly installed on the reinforcement bracket. Since no other bracket structure is set above the reinforcement bracket at this time, sufficient space can be reserved under the middle seat of the rear seat to ensure the riding comfort of the middle seat. Based on the above settings, the four-seat configuration and five-seat configuration of the vehicle can be met respectively through a fixed floor state. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A schematic diagram of the overall structure of the vehicle body rear floor assembly provided in an embodiment of the present application;

[0021] Figure 2 A schematic diagram of a partial structure of a vehicle body rear floor assembly provided in an embodiment of the present application;

[0022] Figure 3 for Figure 2 Schematic diagram of the cross-sectional structure along the middle line AA.

[0023] Reference numerals:

[0024] 1-rear floor structure, 2-reinforcement bracket, 21-raised portion, 22-first accommodating area, 23-second accommodating area, 3-central control bracket, 4-first threaded locking piece, 5-first connecting column, 6-second connecting column. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the specific technical solution of the present application will be further described in detail below in conjunction with the drawings in the embodiments of the present application. The following embodiments are used to illustrate the present application, but are not used to limit the scope of the present application.

[0026] In the embodiments of the present application, the terms "first" and "second" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of the present application, unless otherwise specified, "multiple" means two or more.

[0027] In addition, in the embodiments of the present application, directional terms such as "up", "down", "left" and "right" are defined relative to the orientation of the components in the drawings. It should be understood that these directional terms are relative concepts. They are used for relative description and clarification, and they may change accordingly according to the changes in the orientation of the components in the drawings.

[0028] In the embodiments of the present application, unless otherwise clearly specified and limited, the term "connection" should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection or an indirect connection through an intermediate medium.

[0029] In the embodiments of the present application, the terms "include", "comprises" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the presence of other identical elements in the process, method, article or device including the element.

[0030] In the embodiments of the present application, words such as "exemplary" or "for example" are used to indicate examples, illustrations or descriptions. Any embodiment or design described as "exemplary" or "for example" in the embodiments of the present application should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of words such as "exemplary" or "for example" is intended to present related concepts in a specific way.

[0031] The embodiment of the present application provides a vehicle. It should be noted that the vehicle in the present application may refer to a large car, a small car, a special-purpose car, etc. For example, according to the vehicle type, the vehicle in the present application may be a sedan, an off-road vehicle, a multi-purpose vehicle (MPV) or other vehicle types. Generally, a vehicle is provided with wheels, a power source, and a transmission system arranged between the wheels and the power source. The transmission system can transmit the power provided by the power source to the wheels, so that the wheels rotate, thereby driving the vehicle to travel.

[0032] It should be noted that in the embodiments of the present application, the type of the power source of the vehicle is not limited. For example, for a fuel vehicle, the power source may refer to a fuel engine such as a gasoline engine or a diesel engine; for an electric vehicle, the power source may refer to an electric motor; for a hybrid vehicle, the power source may refer to an engine or an electric motor; for a vehicle powered by other means, the power source may refer to a device that generates power.

[0033] The vehicle provided in the embodiment of the present application includes a body structure, which specifically refers to the main frame of the vehicle and the corresponding structural parts connected to the main frame; wherein the main frame of the vehicle generally includes a body frame constructed of a steel structure, and the corresponding structural parts connected to the main frame of the vehicle may include various panels, brackets, etc. fixed to the body frame by welding, locking, snap connection, pin connection, etc. The body structure may form multiple chambers such as a compartment, a front compartment, and a rear compartment, thereby providing a storage space and a load-bearing installation foundation, so that components such as a power source, a transmission system, a suspension, and wheels can be assembled at corresponding positions on the body structure.

[0034] On this basis, the vehicles provided by this application can be further divided into four-seat vehicles and five-seat vehicles. Among them, the rear row of the four-seat vehicle is only equipped with two seats on the left and right, which can improve the riding comfort and avoid the crowdedness caused by a large number of passengers in the rear row; on the other hand, it is convenient to configure various types of in-vehicle equipment for leisure and entertainment in the rear row, such as seat massage, entertainment audio and video system control, in-vehicle refrigerator, etc. The rear row of the five-seat vehicle is equipped with three seats on the left, middle and right to meet the needs of multiple people.

[0035] As described in the background technology, for four-seater vehicles, the rear-row on-board equipment needs to be integrated into the rear center console. In this way, the rear floor of the vehicle body needs to be provided with a skeleton structure for installing the rear center console during design. For five-seater vehicles, in order to meet the riding comfort requirements of the middle seat in the rear row, the rear floor of the vehicle body needs to reserve enough space under the middle seat in the rear row during design. Based on the above situation, the rear floor of vehicles with four-seat and five-seat configurations currently need to adopt two floor states. Since the rear floor of the vehicle body is supplied in an integrated manner, the increase in floor states will increase the on-site and off-site transportation costs and labor costs, and it is easy to cause misinstallation due to sorting errors.

[0036] Based on the above problems, refer to Figures 1 to 3 The embodiment of the present application provides a vehicle body rear floor assembly, which includes a rear floor structure 1 and a reinforcement bracket 2; the reinforcement bracket 2 is connected to the rear floor structure 1; the reinforcement bracket 2 is detachably connected to a central control bracket 3; the central control bracket 3 is used to connect to the rear central control box (not shown in the figure).

[0037] In this embodiment, the rear floor structure 1, as the main component of the lower part of the vehicle body, has the functions of carrying passengers, placing spare tires, and reducing damage by self-deformation during rear collision. The reinforcement bracket 2 can be installed and fixed to the preset position on the upper surface of the rear floor structure 1 by welding or other methods. In this way, the structural assembly formed by the installed reinforcement bracket 2 and the rear floor structure 1 can form a fixed floor state. The structural assembly can be supplied in an integrated manner and directly transported to the assembly workshop for assembly. Compared with the structural assembly in two floor states, the complexity of materials is greatly reduced, and the sorting operation is omitted, thereby reducing the transportation cost and labor cost inside and outside the field. In addition, since there is only one floor state, it is not easy to be misassembled. In the subsequent assembly process, corresponding devices can be selectively connected to the reinforcement bracket 2 according to the needs of the vehicle configuration; when the vehicle is configured as a four-seater vehicle, the central control bracket 3 can be installed on the reinforcement bracket 2 to provide a certain height installation base for the rear center control box, so that the rear center control box can be fixed at a preset position in the rear row of the vehicle by installing it on the central control bracket 3; when the vehicle is configured as a five-seater vehicle, the rear seats can be directly installed on the reinforcement bracket 2. Since no other support structure is set above the reinforcement bracket 2 at this time, sufficient space can be reserved under the middle seat of the rear seat to ensure the riding comfort of the middle seat.

[0038] In addition, the reinforcement bracket 2 is provided to strengthen the structural strength of the rear floor of the vehicle body. Thus, based on the above arrangement, while increasing the local strength of the rear floor, a fixed floor state can satisfy the four-seat configuration and the five-seat configuration of the vehicle, thereby reducing the on-site and off-site transportation costs and labor costs, and avoiding the problem of mis-installation.

[0039] On this basis, in some embodiments of the present application, refer to Figures 1 to 3 , the reinforcement bracket 2 is welded to the rear floor structure 1 .

[0040] In this embodiment, the reinforcing bracket 2 is fixed to the rear floor structure 1 by welding. Compared with the traditional bolt connection method, this welding method does not need to open holes on the rear floor structure 1, thereby avoiding the watertightness risk caused by the opening of holes, and at the same time reducing the adverse effects of the opening of holes on the strength of the rear floor structure 1.

[0041] On this basis, in some embodiments of the present application, refer to Figure 3 The surface of the reinforcing bracket 2 is formed with at least one protrusion 21 and / or at least one recess (not shown in the figure).

[0042] Specifically, the reinforcing bracket 2 can be formed by stamping, and the arched structures formed by the stamping operation are higher than the base surface of the reinforcing bracket 2 and lower than the base surface of the reinforcing bracket 2, which correspond to the raised portion 21 and the recessed portion, respectively. Compared with the flat plate-shaped reinforcing bracket 2, the local structural strength of the reinforcing bracket 2 can be enhanced by correspondingly arranging the raised portion 21 and the recessed portion.

[0043] In some embodiments of the present application, reference Figure 3 , and also includes a first threaded fastener 4, through which the central control bracket 3 is locked to the reinforcing bracket 2.

[0044] In some embodiments of the present application, reference Figure 3 , and also includes a second threaded locking piece (not shown in the figure), and the rear center control box is locked to the center control bracket 3 through the second threaded locking piece.

[0045] Specifically, the first thread locker 4 and the second thread locker can be standard parts that can be threaded, such as bolts, studs, nuts, etc. By adopting the threaded connection method, the installation convenience of the central control bracket 3 and the rear central control box can be improved, and it is also easy to disassemble and replace later.

[0046] On this basis, in some embodiments of the present application, refer to Figure 3 The central control bracket 3 is provided with a first through hole (not shown in the figure), and the reinforcement bracket 2 is provided with a second through hole (not shown in the figure); the rear floor assembly also includes a first connecting column 5, and the first connecting column 5 is provided with a first screw hole (not shown in the figure). The first connecting column 5 is connected to a side surface of the reinforcement bracket 2 facing away from the central control bracket 3, and the first screw hole is opposite to the first through hole and the second through hole; the first threaded locking member 4 passes through the first through hole and the second through hole in sequence and is threadedly connected to the first screw hole.

[0047] Specifically, the first connecting column 5 can be pre-welded and fixed to the reinforcing bracket 2 during the manufacturing stage of the reinforcing bracket 2; by setting the first connecting column 5, its height can be used to increase the threaded connection length between the first threaded locking piece 4 and the reinforcing bracket 2, and the first threaded locking piece 4 can be locked with bolts without the use of nuts, thereby improving the connection stability and convenience between the central control bracket 3 and the reinforcing bracket 2.

[0048] On this basis, in some embodiments of the present application, refer to Figure 3 The central control bracket 3 is provided with a third through hole (not shown in the figure); the vehicle body rear floor assembly also includes a second connecting column 6, the second connecting column 6 is provided with a second screw hole (not shown in the figure), the second connecting column 6 is connected to the central control bracket 3, and the second screw hole is opposite to the third through hole; the second threaded locking piece passes through the third through hole and is threadedly connected to the second screw hole.

[0049] Specifically, the second connecting column 6 can be pre-welded and fixed to the central control bracket 3 during the manufacturing stage of the central control bracket 3; by setting the second connecting column 6, its height can be used to increase the threaded connection length between the second threaded locking piece and the central control bracket 3, and the second threaded locking piece can be locked with bolts without the use of nuts, thereby improving the connection stability and convenience between the rear center console box and the central control bracket 3.

[0050] On this basis, in some embodiments of the present application, refer to Figure 3 A protrusion 21 is formed on the surface of the reinforcing bracket 2, and a first accommodating area 22 is formed between the concave side of the protrusion 21 and the rear floor structure 1; the first threaded fastener 4 locks the central control bracket 3 to the protrusion 21, and the end of the first threaded fastener 4 is located in the first accommodating area 22 and there is a preset distance between it and the rear floor structure 1.

[0051] Specifically, when the locking position between the central control bracket 3 and the reinforcement bracket 2 is set on the protrusion 21, the first accommodating area 22 formed between the concave side of the protrusion 21 and the rear floor structure 1 can be used to accommodate the end portion of the first threaded fastener 4, thereby preventing the first threaded fastener 4 from directly contacting the rear floor structure 1 and causing adverse effects on the structural strength of the rear floor structure 1. Taking the first threaded fastener 4 as an example of a bolt, the bolt includes a screw rod portion and a screw head portion, and the end of the first threaded fastener 4 can refer to the end of the screw rod portion away from the screw head portion.

[0052] On this basis, in some embodiments of the present application, refer to Figure 3 At least two protrusions 21 are formed on the surface of the reinforcing bracket 2, and the central control bracket 3 is mounted on the at least two protrusions 21. By providing at least two protrusions 21, the local structural strength of the reinforcing bracket 2 can be further enhanced while providing at least two supporting points for the central control bracket 3, so that it is easier to stably mount the central control bracket 3 on the reinforcing bracket 2 for installation and fixation.

[0053] On this basis, in some embodiments of the present application, refer to Figure 3 A second accommodating area 23 is formed between at least two spaced-apart raised portions 21; when a rear seat is connected to the reinforcing bracket 2, the second accommodating area 23 is used to fill the seat foam (not shown in the figure); when a central control bracket 3 is connected to the reinforcing bracket 2, the second accommodating area 23 is used for the wiring harness of the rear central control box to pass through.

[0054] Specifically, in the case of a vehicle with a five-seat configuration, after the rear seats are mounted and fixed on the reinforcement bracket 2, the middle seat of the rear seats is located above the second accommodating area 23; by filling the second accommodating area 23 with seat foam, a good buffering and shock-absorbing effect can be formed on the upper middle seat of the rear row, further improving the riding comfort of the middle seat of the rear row. In the case of a vehicle with a four-seat configuration, after the central control bracket 3 is mounted on at least two spaced protrusions 21 on the reinforcement bracket 2, since the second accommodating area 23 between the corresponding protrusions 21 is vacant, the vacant second accommodating area 23 can be used for the wiring of the rear center console box, thereby improving the rationality and convenience of the wiring harness layout of the rear center console box.

[0055] The serial numbers of the embodiments of the present application are only for description and do not represent the advantages and disadvantages of the embodiments. The above are only preferred embodiments of the present application, and do not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made by using the contents of the present application specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A vehicle body rear floor assembly, characterized in that: include: rear floor structure (1); A reinforcement bracket (2) is connected to the rear floor structure (1); a central control bracket (3) is detachably connected to the reinforcement bracket (2); and the central control bracket (3) is used to connect to the rear central control box.

2. The vehicle body rear floor assembly according to claim 1, characterized in that: The reinforcing bracket (2) is welded to the rear floor structure (1); And / or, at least one protrusion (21) and / or at least one recessed portion is formed on the surface of the reinforcing bracket (2).

3. The vehicle body rear floor assembly according to claim 1, characterized in that: It also includes a first threaded locking piece (4), and the central control bracket (3) is locked to the reinforcing bracket (2) through the first threaded locking piece (4); And / or, it also includes a second threaded locking piece, and the rear center control box is locked to the center control bracket (3) through the second threaded locking piece.

4. The vehicle body rear floor assembly according to claim 3, characterized in that: The central control bracket (3) is provided with a first through hole, and the reinforcement bracket (2) is provided with a second through hole; the rear floor assembly further comprises a first connecting column (5), the first connecting column (5) is provided with a first screw hole, the first connecting column (5) is connected to a side surface of the reinforcement bracket (2) facing away from the central control bracket (3), the first screw hole is opposite to the first through hole and the second through hole; the first threaded locking member (4) passes through the first through hole and the second through hole in sequence and is threadedly connected to the first screw hole.

5. The vehicle body rear floor assembly according to claim 3, characterized in that: The central control bracket (3) is provided with a third through hole; the vehicle body rear floor assembly further comprises a second connecting column (6), the second connecting column (6) is provided with a second screw hole, the second connecting column (6) is connected to the central control bracket (3), the second screw hole is opposite to the third through hole; the second threaded locking piece passes through the third through hole and is threadedly connected to the second screw hole.

6. The vehicle body rear floor assembly according to claim 3, characterized in that: A protrusion (21) is formed on the surface of the reinforcing bracket (2), and a first accommodating area (22) is formed between the concave side of the protrusion (21) and the rear floor structure (1); the first threaded locking piece (4) locks the central control bracket (3) to the protrusion (21), and the end of the first threaded locking piece (4) is located in the first accommodating area (22) and has a preset spacing with the rear floor structure (1).

7. The vehicle body rear floor assembly according to claim 6, characterized in that: At least two protrusions (21) are formed on the surface of the reinforcing bracket (2), and the central control bracket (3) is mounted on at least two of the protrusions (21).

8. The vehicle body rear floor assembly according to claim 7, characterized in that: A second accommodating area (23) is formed between at least two of the protruding portions (21) that are spaced apart; when a rear seat is connected to the reinforcing bracket (2), the second accommodating area (23) is used to fill the seat foam; when the central control bracket (3) is connected to the reinforcing bracket (2), the second accommodating area (23) is used to allow the wiring harness of the rear central control box to pass through.

9. A five-seat vehicle, characterized in that: include: rear seats; The vehicle body rear floor assembly according to any one of claims 1 to 8; The rear seats are connected to a reinforcement bracket (2) of the vehicle body rear floor assembly.

10. A four-seater vehicle, characterized in that: include: Central control bracket (3); A rear center control box connected to the center control bracket (3); The vehicle body rear floor assembly according to any one of claims 1 to 8; the central control bracket (3) is detachably connected to the reinforcement bracket (2) of the vehicle body rear floor assembly.

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