Rear floor assembly and vehicle

Abstract

The application relates to the technical field of vehicles, and particularly discloses a rear floor assembly and a vehicle. The rear floor assembly comprises a vehicle body beam frame, a storage box and sealing foam. The vehicle body beam frame surrounds a containing cavity. The storage box comprises a box body with a storage cavity and a connecting edge connected to the box body. The box body is accommodated in the containing cavity, and the connecting edge is fixed to the vehicle body beam frame. The sealing foam is located between and pressed against the connecting edge and the vehicle body beam frame. The storage space is generated by arranging the storage box, the overall weight is reduced, the box body is arranged in the containing cavity, the assembly process is simplified, the connecting edge is fixed to the vehicle body beam frame, and the overall rigidity and strength are improved. Further, the sealing foam can improve the sealing performance of the storage space, improve the after-sales maintenance performance of the storage box, and reduce the cost of installation, disassembly and replacement and maintenance.

Description

Technical Field

[0001] This utility model relates to the field of vehicle technology, specifically to a rear floor assembly and a vehicle. Background Technology

[0002] The rear floor assembly is an important part of the vehicle body structure. In order to create storage space for the trunk on the rear floor assembly, a common method is to use several sheet metal panels welded together in the trunk area of ​​the rear floor assembly panel to form a storage space.

[0003] However, most rear floor assemblies currently suffer from problems such as heavy overall weight, difficult assembly, and poor sealing. Utility Model Content

[0004] This application provides a rear floor assembly and a vehicle, which can reduce overall weight, simplify assembly process, and improve the sealing of storage space.

[0005] To solve the above-mentioned technical problems, one technical solution adopted in this application is: to provide a rear floor assembly, which includes a vehicle body frame, a storage box and sealing foam; the vehicle body frame forms a receiving cavity; the storage box includes a box body with a storage cavity and a connecting edge connected to the box body; the box body is housed in the receiving cavity and the connecting edge is fixed to the vehicle body frame; the sealing foam is located and pressed between the connecting edge and the vehicle body frame.

[0006] The rear floor assembly also includes a sound insulation pad that covers the vehicle body frame and has a notch surrounding the receiving cavity.

[0007] The vehicle body frame includes a rear surround assembly, which has positioning holes; the connecting edge has a protruding positioning pin, which engages with the positioning hole for locking.

[0008] The length of the positioning pin is greater than the height of the sealing foam, and the difference between the length of the positioning pin and the height of the sealing foam is at least 5mm; the positioning pin is locked into the corresponding positioning hole and presses the sealing foam into a compressed state.

[0009] The connecting edge has a first groove on the side facing away from the positioning pin, and the orthographic projection of the positioning pin toward the first groove is located in the first groove.

[0010] The vehicle body frame also includes a floor longitudinal beam, a first floor transverse beam, and a second floor transverse beam. The rear enclosure assembly, floor longitudinal beam, first floor transverse beam, and second floor transverse beam together form a receiving cavity. The first floor transverse beam and the second floor transverse beam are arranged side by side and spaced apart. The floor longitudinal beam and the rear enclosure assembly are spaced apart. The floor longitudinal beam connects the first end of the first floor transverse beam and the second floor transverse beam. The rear enclosure assembly connects the second end of the first floor transverse beam and the second floor transverse beam. The connecting edge is provided with mounting holes. The rear enclosure assembly, floor longitudinal beam, first floor transverse beam, and second floor transverse beam are provided with corresponding mounting positions. The fasteners pass through the mounting holes and mounting positions in sequence to fix the connecting edge on the vehicle body frame.

[0011] The connecting edge is provided with multiple second grooves, and the mounting holes are located at the corresponding second grooves, and the mounting holes penetrate the bottom wall of the corresponding second grooves.

[0012] The connecting edge is also provided with a third groove, which is arranged adjacent to the second groove and together with the second groove forms a stepped shape.

[0013] The storage box is a one-piece molded plastic box without a lid, and the box body is equipped with reinforcing ribs.

[0014] This application also includes a second technical solution, providing a vehicle including the aforementioned rear floor assembly.

[0015] The beneficial effects of this application are as follows: Unlike existing technologies, the rear floor assembly and vehicle provided in this application include a body frame, a storage box, and sealing foam. The body frame forms a receiving cavity. The storage box includes a box body with a storage cavity and a connecting edge connected to the box body. The box body is housed within the receiving cavity, and the connecting edge is fixed to the body frame. The sealing foam is located and presses against the connecting edge and the body frame. By creating storage space through the storage box, the overall weight can be reduced. The design of the box body being installed within the receiving cavity simplifies the assembly process. The connection edge being fixed to the body frame improves the overall rigidity and strength. Furthermore, the sealing foam not only improves the sealing performance of the storage space but also enhances the after-sales maintainability of the storage box, reducing the costs of installation, disassembly, replacement, and maintenance. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort, wherein: Figure 1 This is a structural schematic diagram of an embodiment of the rear floor assembly of this application; Figure 2yes Figure 1 Schematic diagram of the structure of section AA in the middle; Figure 3 yes Figure 1 A schematic diagram of the structure of the BB cross section.

[0017] Reference numerals: 1. Body beam; 11. Receiving cavity; 12. Rear panel assembly; 121. Positioning hole; 122. Rear panel outer panel; 123. Rear panel inner panel; 13. Floor longitudinal beam; 14. First floor crossbeam; 15. Second floor crossbeam; 16. Mounting position; 17. Floor panel; 2. Storage box; 21. Box body; 22. Connecting edge; 221. Positioning pin; 222. First groove; 223. Mounting hole; 224. Second groove; 225. Third groove; 23. Reinforcing rib; 3. Sealing foam; 4. Fastener; 100. Rear floor assembly. Detailed Implementation

[0018] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustrative purposes only and are not intended to limit the scope of this application. Furthermore, it should be noted that, for ease of description, only the parts relevant to this application are shown in the accompanying drawings, not the entire structure. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of this application.

[0019] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0020] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the stated features.

[0021] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0022] Please refer to the reference. Figure 1 and Figure 2 , Figure 1 This is a structural schematic diagram of an embodiment of the rear floor assembly provided in this application. Figure 2 yes Figure 1 A structural schematic diagram of section AA. One aspect of this application provides a rear floor assembly 100, which includes a body frame 1, a storage box 2, and sealing foam 3. The body frame 1 forms a receiving cavity 11. The storage box 2 includes a box body 21 with a storage cavity and a connecting edge 22 connected to the box body 21. The box body 21 is housed within the receiving cavity 11, and the connecting edge 22 is fixed to the body frame 1. The sealing foam 3 is located and presses against the connecting edge 22 and the body frame 1. By providing the storage box 2 to create storage space, the overall weight can be reduced. The design of the box body 21 installed within the receiving cavity 11 simplifies the assembly process. The connection edge 22 being fixed to the body frame 1 improves the overall rigidity and strength. Furthermore, the sealing foam 3 improves both the sealing performance of the storage space and the after-sales maintainability of the storage box 2, reducing the cost of installation, disassembly, replacement, and maintenance.

[0023] Specifically, the vehicle body frame 1 can be welded together to form a rigid skeleton, enclosing a receiving cavity 11. The shape of the receiving cavity 11 is not limited, such as a cuboid or cylinder. The storage box 2 forms a box body 21 with a storage cavity and a connecting edge 22. The box body 21 is housed within the receiving cavity 11 and can fill the entire receiving cavity 11 to increase storage space and improve space utilization. The connecting edge 22 can be fixed to the rigid structural components of the vehicle body frame 1 to improve the rigidity and strength of the connection. The sealing foam 3 can typically be made of polyurethane or rubber, with a thickness between 2 and 3 millimeters. It has high elasticity and resilience, and can adapt to minor unevenness between the connecting edge 22 and the vehicle body frame 1. Through the compression and pressure of the sealing foam 3, rainwater and dust can be prevented from entering the storage space, solving the problem of poor sealing in traditional sheet metal welded structures and improving the practicality of the storage space. The storage box 2 replaces metal parts, which can reduce the overall weight, reduce vehicle load, and reduce mold and production costs, thus achieving cost reduction and efficiency improvement.

[0024] In one specific embodiment, the sealing foam 3 can be made of EPDM (Ethylene Propylene Diene Monomer). EPDM has excellent heat resistance, aging resistance, and weather resistance, enabling it to withstand extreme temperatures and climatic conditions and resist oxidation and fading. Furthermore, EPDM possesses excellent softness and elasticity, along with good tensile strength, abrasion resistance, and corrosion resistance. Installation is achieved simply by attaching it to the side of the connection edge 22 facing the vehicle body beam 1. Therefore, the sealing design using EPDM sealing foam 3, compared to traditional glass glue sealing, solves the problems of non-removability and difficult after-sales maintenance, improves product maintenance convenience, simplifies the assembly process, and enhances sealing performance, even achieving IPX7 (waterproof rating 7) requirements.

[0025] In one embodiment of this application, the rear floor assembly 100 further includes a sound insulation pad (not shown in the figure), which covers the vehicle body frame 1 and has a notch surrounding the receiving cavity 11.

[0026] Specifically, the sound insulation pad covers the outer surface of the vehicle body frame 1, forming a covering layer. The sound insulation pad has a notch that surrounds the edge contour of the receiving cavity 11. The notch can be designed as an opening that matches the shape of the receiving cavity 11, such as a circular or rectangular notch, allowing the area of ​​the receiving cavity 11 to be completely open, thus improving or avoiding interference with the placement and installation of the storage box 2. The notch design of the sound insulation pad reduces the amount of material used, lowering the overall weight and manufacturing cost of the rear floor assembly 100. At the same time, the structure of the notch surrounding the receiving cavity 11 ensures that the storage box 2 can be smoothly installed into the receiving cavity 11, improving or avoiding the additional weight and cost problems associated with traditional full-coverage sound insulation pads, achieving a dual optimization of lightweighting and economy.

[0027] In one embodiment of this application, the vehicle body frame 1 includes a rear surround assembly 12, which has a positioning hole 121; the connecting edge 22 is provided with a positioning pin 221, which engages with the positioning hole 121 for locking.

[0028] Specifically, such as Figure 2 As shown, the rear panel assembly 12 of the vehicle body beam 1 is provided with a positioning hole 121; the connecting edge 22 is provided with a positioning pin 221, which is fixed to the positioning hole 121 by a locking mechanism, thereby achieving precise positioning of the storage box 2 on the vehicle body beam 1. During installation, the positioning pin 221 can be placed at a preset position on the rear panel 122, so that it can be guided into the positioning hole 121 during installation, thereby improving or avoiding the accumulation of dimensional tolerances caused by multi-stage welding processes in traditional technology. The number of positioning pins 221 can be one or more, such as two or three.

[0029] Furthermore, the rear assembly 12 can be composed of an outer rear panel 122 and an inner rear panel 123. Since the inner rear panel 123 is welded to the outer rear panel 122, and the inner rear panel 123 is closer to the storage box 2 than the outer rear panel 122, placing the positioning hole 121 on the outer rear panel 122 can improve the rigidity and strength of the positioning hole 121. In other words, the positioning pin 221 can be directly arranged on the outer rear panel 122 through the positioning hole 121, thereby improving or avoiding the accumulation of dimensional tolerances during traditional multi-layer sheet metal welding, thus improving the positioning accuracy of the storage box 2 on the vehicle body frame 1. This design simplifies the assembly process, reduces assembly failures due to tolerance issues, improves the stability and efficiency of the overall vehicle assembly, and also enhances the reliability of the storage box 2 installation.

[0030] In one embodiment of this application, as Figure 2 As shown, the length L of the positioning pin 221 is greater than the height H of the sealing foam 3, and the difference between the length L of the positioning pin 221 and the height H of the sealing foam 3 is at least 5mm; the positioning pin 221 is locked into the corresponding positioning hole 121 and presses the sealing foam 3 into a compressed state.

[0031] Specifically, the height H of the sealing foam 3 refers to its original vertical dimension in its uncompressed state; the length L of the positioning pin 221 must be greater than this height H, and the difference between the two must be at least 5 mm. During manufacturing, the length L of the positioning pin 221 can be designed based on the uncompressed height H of the sealing foam 3. For example, when using EPDM dense foam, if the foam height is 8 mm, the length of the positioning pin 221 can be set to 13 mm or more. The positioning pin 221 can be locked into the pre-set positioning hole 121 in the rear outer panel 122 to guide and compress the sealing foam 3, ensuring that the sealing foam 3 is evenly compressed during installation. The design with a difference of at least 5 mm allows the positioning pin 221 to fully compress the sealing foam 3 by driving the connecting edge 22, thus playing a guiding role and improving or preventing sealing failure due to insufficient compression, thereby reliably achieving the IPX7 watertightness requirement. The positioning pin 221 presses the sealing foam 3 into a compressed state, ensuring the foam adheres tightly to the vehicle body structure contact surface. This also prevents moisture intrusion and replaces the traditional non-removable sealing method of silicone sealant, facilitating after-sales maintenance. Alternatively, in another embodiment, silicone sealant can be used instead of the sealing foam 3. While silicone sealant offers good sealing performance, its disadvantages include non-removability, the need for equipment development, a long development cycle, and high costs. The specific choice depends on the actual process conditions and will not be elaborated further here.

[0032] In one embodiment of this application, a first groove 222 is provided on the side of the connecting edge 22 facing away from the positioning pin 221, and the orthographic projection of the positioning pin 221 toward the first groove 222 is located in the first groove 222.

[0033] Specifically, the connecting edge 22 has a first groove 222 on the side facing away from the locating pin 221. The shape and size of this groove are designed so that the projection of the locating pin 221 in the direction perpendicular to the connecting edge 22 falls completely into it, thereby providing precise guidance for the locating pin 221 during assembly. The first groove 222 can be designed as a shallow groove structure, located on the outer edge of the connecting edge 22, and its shape can be rectangular. During manufacturing, the first groove 222 can be directly formed on the plastic part of the connecting edge 22 using an integral injection molding process. For example, the groove depth is 1.5 mm to 3 mm, and the width is slightly larger than the diameter of the locating pin 221 to ensure the precise embedding of the projection of the locating pin 221. A standard injection mold can be used to set the groove on the connecting edge 22 to achieve a tight fit with the locating pin 221 and avoid misalignment during assembly. The rear panel assembly 12 can also be provided with a mounting edge, and the positioning hole 121 can be set on the mounting edge. During installation, the first groove 222 can be inserted into or plugged into the corresponding mounting edge of the rear panel assembly 12 to improve the assembly accuracy of the rear floor assembly 100, improve or avoid the problem of dimensional tolerance accumulation in the traditional multi-layer sheet metal welding process, and enable the positioning pin 221 to be accurately inserted into the mounting hole 223 of the rear outer panel 122, thereby improving the uniformity of force on the sealing foam 3 and achieving the IPX7 watertightness requirement. At the same time, the assembly process does not require repeated positioning adjustments, simplifying the process, shortening the production time, reducing manufacturing costs, and enhancing the after-sales maintainability of the product.

[0034] Furthermore, the first groove 222 can also improve the rigidity of the locating pin 221, and improve or prevent the locating pin 221 from deforming during installation. The sealing foam 3 can also be arranged at intervals with the locating pin 221 on the back of the first groove 222, thereby improving the uniformity of force on the sealing foam 3 through the flatness of the bottom wall of the first groove 222.

[0035] In one embodiment of this application, as Figure 1 As shown, the vehicle body frame 1 also includes a floor longitudinal beam 13, a first floor transverse beam 14, and a second floor transverse beam 15; the rear enclosure assembly 12, the floor longitudinal beam 13, the first floor transverse beam 14, and the second floor transverse beam 15 together form a receiving cavity 11; wherein, the first floor transverse beam 14 and the second floor transverse beam 15 are arranged side by side and spaced apart, the floor longitudinal beam 13 and the rear enclosure assembly 12 are spaced apart, and the floor longitudinal beam 13 connects the first end of the first floor transverse beam 14 and the second floor transverse beam 15, and the rear enclosure assembly 12 connects the second end of the first floor transverse beam 14 and the second floor transverse beam 15; the connecting edge 22 is provided with a mounting hole 223, and the rear enclosure assembly 12, the floor longitudinal beam 13, the first floor transverse beam 14, and the second floor transverse beam 15 are provided with corresponding mounting positions 16, and the fastener 4 passes through the mounting hole 223 and the mounting position 16 in sequence to fix the connecting edge 22 on the rear enclosure assembly 12, the floor longitudinal beam 13, the first floor transverse beam 14, and the second floor transverse beam 15.

[0036] Specifically, the first floor crossbeam 14 and the second floor crossbeam 15 are arranged side by side and spaced apart. The floor longitudinal beam 13 connects the first ends of the first floor crossbeam 14 and the second floor crossbeam 15. The rear enclosure assembly 12 connects the second ends of the first floor crossbeam 14 and the second floor crossbeam 15, together forming a receiving cavity 11. The connecting edge 22 is provided with mounting holes 223. The rear enclosure assembly 12, the floor longitudinal beam 13, the first floor crossbeam 14, and the second floor crossbeam 15 are provided with corresponding mounting positions 16. The fastener 4 can be a bolt, which passes through the mounting holes 223 and the mounting positions 16 in sequence to fix the connecting edge 22 to the vehicle body beam 1. For example, the vehicle body beam 1 is formed by welding steel plates, and the mounting positions 16 are formed by stamping or drilling. Through this structural design of the vehicle body beam frame 1, the mounting positions 16 can be evenly arranged on rigid structural components such as the floor longitudinal beams 13, the first floor crossbeam frame 14, and the second floor crossbeam frame 15. The corresponding mounting holes 223 can also be evenly arranged around the outer periphery of the connecting edge 22 to improve installation strength and rigidity, and improve or avoid the accumulation of dimensional tolerances caused by multi-layer welding. At the same time, the enclosed receiving cavity 11 provides a stable installation space for the storage box 2, and the foam sealing method achieves IPX7 water tightness, simplifies the assembly process, facilitates after-sales maintenance, significantly reduces the overall weight, and lowers manufacturing costs.

[0037] Furthermore, the vehicle body frame 1 may also include a floor panel 17, which can be welded to the floor longitudinal beam 13 to increase the overall structural strength. At the same time, it can also provide an mounting surface for the laying of sound insulation pads.

[0038] Please continue to refer to the reference. Figure 3 , Figure 3 yes Figure 1 A structural schematic diagram of the BB cross section. In one embodiment of this application, a plurality of second grooves 224 are provided on the connecting edge 22, and mounting holes 223 are located at the corresponding second grooves 224, and the mounting holes 223 penetrate the bottom wall of the corresponding second grooves 224.

[0039] Specifically, the second groove 224 can be designed as a rectangular groove extending from the edge of the connecting edge 22. On the one hand, the mounting hole 223 is located within the second groove 224, which facilitates the positioning of the mounting hole 223. On the other hand, the second groove 224 can also increase the rigidity and strength of the mounting hole 223, improving the reliability and stability of the storage box 2 installation. This design, with the mounting hole 223 penetrating through the bottom wall of the second groove 224, allows the fastener 4 and the connecting edge 22 to form an embedded connection at their joint point, which can improve assembly accuracy and reduce the risk of loosening.

[0040] Furthermore, a sealing foam 3 can also be provided at the bottom of the second groove 224. The groove structure can provide additional compression space for the sealing foam 3, so that the foam can fit more tightly to the vehicle body beam 1 and the connecting edge 22 under the action of the fastener 4, thereby improving the sealing performance. At the same time, the lightweight design of the groove reduces the amount of material used in the connecting edge 22, reduces the overall weight of the rear floor assembly 100, simplifies the assembly steps, thereby solving the problem of water leakage or abnormal noise caused by poor sealing in the prior art, and improving the practicality and durability of the vehicle interior space.

[0041] In one embodiment of this application, a third groove 225 is also provided on the connecting edge 22. The third groove 225 is disposed adjacent to the second groove 224 and together with the second groove 224 forms a stepped shape.

[0042] Specifically, the third groove 225 can be set outside the second groove 224, forming a stepped profile with the second groove 224. For example, the depth of the third groove 225 is 1 to 3 mm shallower than the second groove 224. In this way, the sealing foam 3 can be installed on the back of the third groove 225, so that the stepped structure can provide layered support for the sealing foam 3, improving or preventing it from lateral slippage or local deformation during compression.

[0043] In one specific embodiment, the third groove 225 and the second groove 224 can be integrally manufactured on the connecting edge 22 using injection molding. The stepped effect is achieved by adjusting the depth difference of the grooves using a mold. In another specific embodiment, a metal sheet stamping process can also be used. By precisely controlling the step height of the stamping mold, the third groove 225 and the second groove 224 can form a continuous step at the edge of the connecting edge 22. The depth difference can be flexibly set according to the compression rate of the sealing foam 3. For example, for a sealing foam 3 with a thickness of 5 mm, the depth of the third groove 225 is designed to be 2 mm and the depth of the second groove 224 is 4 mm, so that the edge of the sealing foam 3 is uniformly guided during compression.

[0044] Furthermore, the stepped groove design ensures that the sealing foam 3 is evenly stressed during bolt compression, eliminating local gaps and stress concentration, thereby improving sealing performance. At the same time, it retains the removable and repairable characteristics of the sealing foam 3, enhancing the product's reliability and after-sales service in humid environments while ensuring lightweight design and simplified assembly.

[0045] In one embodiment of this application, as Figures 1 to 3 As shown, the storage box 2 is a one-piece molded plastic box without a lid, and the box body 21 is provided with reinforcing ribs 23.

[0046] Specifically, the storage box 2 is manufactured as a single plastic component using injection molding, featuring a lidless design. Reinforcing ribs 23 are provided on the surface of the box body 21 to enhance structural strength. In one embodiment, the storage box 2 can be made of polypropylene or ABS plastic material through injection molding, and the reinforcing ribs 23 can be raised ribs evenly distributed on the outer wall of the box body 21. In another embodiment, the reinforcing ribs 23 can also be recessed groove structures to optimize material distribution and enhance resistance to deformation. The one-piece molded, lidless plastic box body 21 design replaces the traditional multi-layer sheet metal welded structure, reducing the weight of the storage box 2 and simplifying the manufacturing process, improving or avoiding the cumbersome procedures caused by multi-stage welding. The reinforcing ribs 23 on the box body 21 maintain structural rigidity while reducing material usage, improving or preventing the strength reduction and deformation risks caused by lightweighting, thereby achieving the goal of lightweighting while improving product durability. This technical feature enables the storage box 2 to fit precisely with the vehicle body beam 1, supports IPX7 watertight sealing, and improves assembly efficiency and after-sales maintenance friendliness, solving the defects of existing technologies such as large weight, low precision and difficult maintenance.

[0047] In another aspect, this application also provides a vehicle that includes the aforementioned rear floor assembly 100. Specifically, since the vehicle includes the rear floor assembly 100 described in the above embodiments, it also has the beneficial effects of the aforementioned rear floor assembly 100, which will not be repeated here.

[0048] It should be noted that the terms "horizontal" and "vertical" do not imply that the components must be absolutely horizontal or vertical, but rather that they can be slightly tilted. Similarly, the terms "parallel" and "perpendicular" do not imply that the components are absolutely parallel or perpendicular, but rather that they can have a certain angular deviation. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but rather that it can be slightly tilted. In addition, the orientations or positional relationships indicated by terms such as "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise" are based on the orientations or positional relationships shown in the accompanying drawings, or the orientations or positional relationships that are commonly used when the product of this application is in use. They are only for the purpose of describing the embodiments of this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0049] It is understood that the term "multiple" in this document means at least two, such as two, three, etc., unless otherwise specified. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or device that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to these processes, methods, products, or devices. The term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, or B alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects are in an "or" relationship.

[0050] The above description is merely an embodiment of this application and does not limit the patent scope of this application. Any equivalent structural or procedural transformations made using the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this application.

Claims

1. A rear floor assembly, characterized in that, include: The vehicle body beam (1) forms a receiving cavity (11). Storage box (2), the storage box (2) includes a box body (21) having a storage cavity and a connecting side (22) connected to the box body (21); the box body (21) is housed in the receiving cavity (11), and the connecting side (22) is fixed to the vehicle body beam (1); Sealing foam (3) is located and pressed between the connecting edge (22) and the vehicle body beam (1).

2. The rear floor assembly according to claim 1, characterized in that, The rear floor assembly also includes a sound insulation pad that covers the body frame (1) and has a notch surrounding the receiving cavity (11).

3. The rear floor assembly according to claim 1, characterized in that, The vehicle body beam (1) includes a rear enclosure assembly (12), and the rear enclosure assembly (12) is provided with positioning holes (121). The connecting edge (22) is provided with a positioning pin (221), which engages with the positioning hole (121) for locking.

4. The rear floor assembly according to claim 3, characterized in that, The length of the positioning pin (221) is greater than the height of the sealing foam (3), and the difference between the length of the positioning pin (221) and the height of the sealing foam (3) is at least 5 mm; The positioning pin (221) is locked into the corresponding positioning hole (121) and presses against the sealing foam (3) to a compressed state.

5. The rear floor assembly according to claim 3, characterized in that, The connecting edge (22) has a first groove (222) on the side facing away from the positioning pin (221), and the orthographic projection of the positioning pin (221) toward the first groove (222) is located in the first groove (222).

6. The rear floor assembly according to claim 1, characterized in that, The vehicle body frame (1) also includes a rear enclosure assembly (12), a floor longitudinal beam (13), a first floor crossbeam frame (14), and a second floor crossbeam frame (15); the rear enclosure assembly (12), the floor longitudinal beam (13), the first floor crossbeam frame (14), and the second floor crossbeam frame (15) together form the receiving cavity (11). The first floor beam (14) and the second floor beam (15) are arranged side by side and spaced apart, the floor longitudinal beam (13) and the rear enclosure assembly (12) are arranged spaced apart, and the floor longitudinal beam (13) connects the first end of the first floor beam (14) and the second floor beam (15), and the rear enclosure assembly (12) connects the second end of the first floor beam (14) and the second floor beam (15); The connecting edge (22) is provided with mounting holes (223), and the rear enclosure assembly (12), the floor longitudinal beam (13), the first floor crossbeam frame (14) and the second floor crossbeam frame (15) are provided with corresponding mounting positions (16). The fastener (4) passes through the mounting holes (223) and the mounting positions (16) in sequence to fix the connecting edge (22) on the vehicle body beam frame (1).

7. The rear floor assembly according to claim 6, characterized in that, The connecting edge (22) is provided with a plurality of second grooves (224), and the mounting hole (223) is located at the corresponding second groove (224), and the mounting hole (223) penetrates the bottom wall of the corresponding second groove (224).

8. The rear floor assembly according to claim 7, characterized in that, The connecting edge (22) is also provided with a third groove (225), which is arranged adjacent to the second groove (224) and together with the second groove (224) forms a stepped shape.

9. The rear floor assembly according to claim 1, characterized in that, The storage box (2) is a one-piece molded plastic lidless box, and the box body (21) is provided with reinforcing ribs (23).

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

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