Vehicle body structure of vehicle and vehicle

Abstract

The utility model relates to a vehicle body structure of a vehicle and the vehicle, the vehicle body structure of the vehicle comprises a rear floor assembly, a seat framework and a seat longitudinal beam connected with the rear floor assembly, and the seat longitudinal beam extends in the front-back direction of the vehicle. The rear floor assembly comprises a rear floor framework and a rear floor panel connected with the rear floor framework, the seat longitudinal beam is located above the rear floor panel, and the front end of the seat longitudinal beam is connected with the rear floor framework. The two sides, arranged at intervals in the left-right direction, of the seat framework are defined as the first side and the second side respectively, the first side of the seat framework is connected with the seat longitudinal beam, and the second side of the seat framework is connected with the rear floor framework. The supporting performance of the seat framework is improved, and the stability and safety of the installed seat are ensured.

Description

Technical Field

[0001] This application relates to the field of vehicle technology, and in particular to a vehicle body structure and a vehicle. Background Technology

[0002] The vehicle body structure is a crucial component of an automobile, typically comprising the rear floor assembly and seat beam structure. Currently, to reduce costs, weight, and improve production efficiency, components in the vehicle body structure are often formed using unibody die-casting technology.

[0003] Heavy structural components, such as seats, are usually installed on the rear floor panel. However, in order to reduce costs and weight, the rear floor panel is usually made of a thin flat panel. After the seats are installed, the support performance of the seats is poor. In the event of a collision, the vehicle body is prone to deformation and injury to the occupants, and it cannot effectively protect the safety of the occupants. Utility Model Content

[0004] Therefore, it is necessary to provide a vehicle body structure that can reduce vehicle weight while increasing the installation strength of the seat frame.

[0005] This application provides a vehicle body structure, including a rear floor assembly, a seat frame, and a seat longitudinal beam connected to the rear floor assembly. The seat longitudinal beam extends along the longitudinal direction of the vehicle. The rear floor assembly includes a rear floor frame and a rear floor panel connected to the rear floor frame. The seat longitudinal beam is located above the rear floor panel, and the front end of the seat longitudinal beam is connected to the rear floor frame. Two sides of the seat frame arranged at intervals along the width direction of the vehicle are defined as a first side and a second side, respectively. The first side of the seat frame is connected to the seat longitudinal beam, and the second side of the seat frame is connected to the rear floor frame.

[0006] In one embodiment, the seat frame and the seat longitudinal beam are provided with mounting holes for the first insertion end of the first connector to pass through. A cavity is formed inside the seat longitudinal beam. A branch pipe constrained by the first insertion end is fixedly connected to the seat longitudinal beam at the position corresponding to the mounting hole. At least part of the branch pipe is located inside the cavity.

[0007] In one embodiment, the first side of the seat frame is located above the seat longitudinal beam, and the branch pipe is arranged vertically.

[0008] In one embodiment, the rear end of the seat longitudinal beam is provided with a connection hole corresponding to the rear floor panel for the second insertion end of the second connector to pass through. The seat longitudinal beam is fixed with a support tube constrained to the second insertion end at the position corresponding to the connection hole. At least part of the support tube is located in the cavity and the support tube is arranged vertically.

[0009] In one embodiment, there are at least two branch pipes, which are spaced apart along the length of the seat longitudinal beam.

[0010] In one embodiment, the two branch pipes are defined as a first branch pipe and a second branch pipe, respectively. The second branch pipe is located between the first branch pipe and the support pipe. A portion of the top plate of the seat longitudinal beam arches upward to form an arched portion that matches the bottom surface of the seat frame. The mounting hole on the top plate of the seat longitudinal beam corresponding to the second branch pipe is defined as a first mounting hole. The arched portion has a first inclined portion that gradually slopes backward from top to bottom. The first mounting hole is located on the first inclined portion. The second branch pipe gradually slopes forward from top to bottom.

[0011] Alternatively, the arched portion has a second inclined portion that gradually slopes forward from top to bottom, the first mounting hole is located on the second inclined portion, and the second branch pipe gradually slopes backward from top to bottom.

[0012] In one embodiment, both the branch pipe and the support pipe include a pipe body located within the cavity. The top end of the pipe body is provided with an upwardly extending extension. The extensions of the branch pipe and the support pipe are respectively located within the mounting hole and the connecting hole. The top surface of the pipe body abuts against the bottom surface of the top plate of the seat longitudinal beam, and the lower end of the pipe body is fixedly connected to the top surface of the bottom plate of the seat longitudinal beam. And / or, at least one of the branch pipe and the support pipe has a downwardly extending protrusion at the bottom end of its pipe body, and the bottom plate of the seat longitudinal beam has an insertion hole at the position corresponding to the protrusion for the protrusion to be inserted.

[0013] In one embodiment, the seat longitudinal beam includes an upper beam and a lower beam that both extend along the longitudinal direction of the vehicle. The cavity is formed by the upper beam and the lower beam. The upper beam includes an upper plate, and the top plate of the seat longitudinal beam includes the upper plate. The mounting holes and connecting holes are both located on the upper plate. The left and right sides of the upper plate extend downward to form first side plates. The lower beam includes a bottom plate, and the left and right sides of the bottom plate extend upward to form second side plates. When the seat longitudinal beam is in the installed state, the first side plates are located between the two second side plates, and the first side plates are connected to the corresponding second side plates.

[0014] In one embodiment, the rear floor frame includes a front crossbeam located at least partially in front of the rear floor panel, and the seat longitudinal beam includes a connecting beam connected to the front crossbeam. The connecting beam includes a top beam plate located above the upper plate. The left and right sides of the top beam plate extend downward to form side beam plates. A second side plate is located between the first side plate and the side beam plate on the corresponding side. The front edges of the two side beam plates are provided with extension plates extending in the left-right direction of the vehicle away from each other. The extension plates and the front crossbeam are respectively provided with mounting holes that constrain the third insertion end of the third connector. The third insertion end is arranged in the front-rear direction of the vehicle.

[0015] In one embodiment, the front edge of the top beam plate is provided with an overlapping plate located above the front crossbeam, the bottom surface of the overlapping plate having a downwardly arched protrusion that contacts the top surface of the front crossbeam; or,

[0016] The base plate and the two second side plates enclose a defined space, and the top edge of the two second side plates is provided with a guide portion for guiding the corresponding first side plate to slide into the defined space.

[0017] This application also discloses a vehicle, including a body structure, wherein the body structure is the body structure described in any of the above embodiments.

[0018] Compared with the prior art, in the vehicle body structure provided in this application, the first side of the seat frame is connected to the seat longitudinal beam, and the second side of the seat frame is connected to the rear floor frame. That is, neither side of the seat frame is directly connected to the rear floor panel, thereby avoiding the problem of poor installation strength of the seat frame due to the limited strength of the rear floor panel. Therefore, by adopting the above-mentioned seat frame fixing method, relying on the support of the seat longitudinal beam and the rear floor frame, the support performance of the seat frame is improved, ensuring the stability and safety of the installed seat. In the event of a collision, since the seat longitudinal beam and the rear floor frame provide direct support, the safety of the occupants can be better guaranteed. In addition, the weight of the vehicle body structure can also be reduced. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this application or the conventional technology, the drawings used in the description of the embodiments or the conventional technology will be briefly introduced below. Obviously, the 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.

[0020] Figure 1 This is a perspective view of a portion of the vehicle body structure according to an embodiment of this application;

[0021] Figure 2 for Figure 1 A magnified view of a section at point A in the middle;

[0022] Figure 3 for Figure 1 Partial structural diagram;

[0023] Figure 4 for Figure 3 A magnified view of a section at point B in the middle;

[0024] Figure 5 for Figure 1 Schematic diagram of the longitudinal beam of the middle seat;

[0025] Figure 6 for Figure 5 A schematic diagram of the three-dimensional exploded structure;

[0026] Figure 7 for Figure 5 A schematic diagram of the lower beam with branch pipes and support pipes installed in the middle;

[0027] Figure 8 for Figure 5 A sectional view;

[0028] Figure 9 for Figure 8 A magnified view of a section at point C;

[0029] Figure 10 for Figure 8 A magnified view of a section at point D;

[0030] Figure 11 for Figure 8 A magnified view of a section at point E in the middle;

[0031] Figure 12 for Figure 5 Top view;

[0032] Figure 13 for Figure 12 A cross-sectional view along the FF direction.

[0033] Reference numerals: 1. Rear floor assembly; 11. Rear floor frame; 111. Front crossbeam; 112. Rear floor longitudinal beam; 12. Rear floor panel; 2. Seat frame; 21. First side; 22. Second side; 3. Seat longitudinal beam; 30. Chamber; 31. Upper beam; 311. Upper plate; 3110. Second mounting hole; 3111. First mounting hole; 3112. Connecting hole; 3113. Arch; 31131. First inclined section; 312. First side plate; 32. Lower beam; 320 321. Limited space; 322. Base plate; 322. Second side plate; 3221. Guide part; 33. Connecting beam; 331. Top beam plate; 332. Side beam plate; 333. Extension plate; 3331. Assembly hole; 334. Overlap plate; 3341. Protrusion; 3342. Recessed area; 411. First branch pipe; 412. Second branch pipe; 42. Support pipe; 43. Pipe body; 430. Extension part; 431. Protrusion; 5. First connector; 6. Second connector; 7. Third connector. Detailed Implementation

[0034] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0035] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on the other component or there may be an intermediate component. When a component is considered to be "connected" to another component, it can be directly connected to the other component or there may be an intermediate component present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," "side," "top," "bottom," and similar expressions used in this application's specification are merely for describing various exemplary structural parts and elements of this application. However, their use herein is for illustrative purposes only and is determined based on the exemplary orientations shown in the accompanying drawings, and does not represent the only possible implementation. Since the embodiments disclosed in this application can be arranged in different orientations, these terms indicating orientation are for illustrative purposes only and should not be considered as limitations. For example, "upper" and "lower" are not necessarily limited to directions opposite to or consistent with the direction of gravity.

[0036] Furthermore, 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 at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0037] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature and the second feature are in indirect contact through an intermediate medium. Furthermore, "above," "over," and "on top" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0038] It should be noted that "axial arrangement" means that the overall arrangement direction is along the axial direction, including but not limited to axial extension, and may be at an angle to the axial direction.

[0039] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in this application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The term "and / or" as used in this application includes any and all combinations of one or more of the associated listed items.

[0040] like Figures 1-10 As shown, this application discloses a vehicle body structure. Figures 1-3 As shown, the vehicle body structure includes a rear floor assembly 1, a seat frame 2, and a seat longitudinal beam 3 connected to the rear floor assembly 1. The seat longitudinal beam 3 extends along the front-rear direction of the vehicle. The rear floor assembly 1 includes a rear floor frame 11 and a rear floor panel 12 connected to the rear floor frame 11. The seat longitudinal beam 3 is located above the rear floor panel 12, and the front end of the seat longitudinal beam 3 is connected to the rear floor frame 11. The two sides of the seat frame 2 arranged at intervals along the left-right direction of the vehicle (i.e., the width direction of the vehicle) are defined as the first side 21 and the second side 22, respectively. The first side 21 of the seat frame 2 is connected to the seat longitudinal beam 3, and the second side 22 of the seat frame 2 is connected to the rear floor frame 11.

[0041] Understandably, the first side 21 of the seat frame 2 is connected to the seat longitudinal beam 3, and the second side 22 of the seat frame 2 is connected to the rear floor frame 11. That is, neither side of the seat frame 2 is directly connected to the rear floor panel 12, thereby avoiding the problem of poor seat strength caused by the limited strength of the rear floor panel 12. Therefore, by adopting the above-mentioned seat frame fixing method, relying on the support of the seat longitudinal beam and the rear floor frame, the support performance of the seat frame is improved, ensuring the stability and safety of the installed seat. In the event of a collision, the direct support of the seat longitudinal beam and the rear floor frame can better ensure the safety of the occupants.

[0042] In this embodiment, such as Figure 2 and Figure 3 As shown, the rear floor frame 11 includes a front crossbeam 111 located at least partially in front of the rear floor panel 12. The rear floor frame 11 also includes a rear floor longitudinal beam 112 connected to the front crossbeam 111, extending along the longitudinal direction of the vehicle. There are two rear floor longitudinal beams 112, spaced apart along the left-right direction of the vehicle. The rear floor panel 12 is located between the two rear floor longitudinal beams 112, and the second side 22 of the seat frame 2 is connected to the corresponding rear floor longitudinal beam 112.

[0043] It should be noted that the vehicle's front-to-back direction (length direction) is the x-direction, the vehicle's left-to-right direction (width direction) is the y-direction, and the vehicle's up-and-down direction (vertical direction) is the z-direction.

[0044] The aforementioned rear floor frame 11 is made of cast aluminum. The design of the cast aluminum component reduces the weight of the vehicle body.

[0045] In other embodiments, the first side 21 of the seat frame 2 is connected to the side wall of the seat longitudinal beam 3. To enhance the support performance of the seat frame 2, in this embodiment, as... Figures 2-5 As shown, the first side 21 of the seat frame 2 is located above the seat longitudinal beam 3, and a mounting hole is provided corresponding to the top plate of the seat longitudinal beam 3 for the first insertion end of the first connector 5 to pass through. A cavity 30 is formed inside the aforementioned seat longitudinal beam 3, and a branch pipe constrained to the first insertion end is fixed at the position corresponding to the mounting hole of the seat longitudinal beam 3. The branch pipe is arranged vertically, and at least part of the branch pipe is located inside the cavity 30.

[0046] It is understandable that a branch pipe is provided in the cavity 30 of the seat longitudinal beam 3. On the one hand, it improves the strength of the seat longitudinal beam 3 at the mounting hole, thereby improving the connection strength between the seat longitudinal beam 3 and the seat frame 2. On the other hand, since the branch pipe is easy to process, the processed branch pipe is easy to install in the cavity 30 of the seat longitudinal beam 3, thus improving the processing efficiency.

[0047] In other implementations, such as Figure 1 , Figure 2and Figure 5 As shown, the rear end of the seat longitudinal beam 3 is connected to the rear floor frame 11. In this embodiment, the rear end of the seat longitudinal beam 3 is connected to the rear floor panel 12. Specifically, the top plate of the seat longitudinal beam 3 and the rear floor panel 12 are respectively provided with connection holes 3112 for the second insertion end of the second connector 6 to pass through. A support tube 42 constraining the second insertion end is fixed at the position corresponding to the connection hole 3112 on the seat longitudinal beam 3. The support tube 42 is arranged vertically, and at least part of the support tube 42 is located in the cavity 30. Since the connection hole 3112 is located behind the mounting hole, the support tube 42 is located behind the branch tube.

[0048] It should be noted that "vertical arrangement" includes, but is not limited to, vertical; it is acceptable as long as the overall arrangement is along the height of the vehicle.

[0049] Understandably, the seat longitudinal beam 3 is equipped with a support tube 42. On the one hand, this improves the strength of the connection between the seat longitudinal beam 3 and the rear floor panel 12, thereby improving the support strength for the subsequent seat frame 2. On the other hand, since the support tube 42 is easy to process, the processed support tube 42 can be easily installed in the cavity 30 of the seat longitudinal beam 3, thus improving processing efficiency.

[0050] To better support the first side 21 of the seat frame 2, at least two of the aforementioned branch pipes are arranged at intervals along the length of the seat longitudinal beam 3. Thus, the seat longitudinal beam 3 and the first side 21 of the seat frame 2 have at least two mounting positions, improving the reliability of the installation of the first side 21 of the seat frame 2.

[0051] like Figures 8-11 As shown, both the branch pipe and the support pipe 42 include a vertically arranged pipe body 43 located within the chamber 30. The top of the pipe body 43 has an upwardly extending extension 430. The extensions 430 of the branch pipe and the support pipe 42 are located within the mounting hole and the connecting hole 3112, respectively. That is, when the extension 430 of the branch pipe is defined as the first extension and the extension 430 of the support pipe 42 as the second extension, the first extension is located within the mounting hole, and the second extension is located within the connecting hole 3112. The top surface of the pipe body 43 abuts against the bottom surface of the top plate of the seat longitudinal beam 3, and the lower end of the pipe body 43 is fixedly connected to the top surface of the bottom plate 321 of the seat longitudinal beam 3. This provides better support for the top plate and bottom plate 321 of the seat longitudinal beam 3, while increasing the Z-direction strength of the seat longitudinal beam 3, thereby improving the support strength for the seat.

[0052] Furthermore, there are various ways to fix the lower end of the tube body 43 to the base plate 321 of the seat longitudinal beam 3. Welding, such as arc welding or other welding methods, can be used. Alternatively, a connection can be achieved through fasteners. This embodiment will not elaborate further.

[0053] like Figures 9-11 As shown, at least one of the branch pipe and support pipe 42 has a downwardly extending protrusion 431 at the bottom end of its main body 43. The bottom plate 321 of the seat longitudinal beam 3 has an insertion hole at the corresponding position of the protrusion 431 for insertion of the protrusion 431. This improves the reliability of the connection between the branch pipe and / or support pipe 42 and the seat longitudinal beam 3. In this embodiment, the main body 43 of the branch pipe has the protrusion 431. In other embodiments, both the branch pipe and the support pipe 42 have the aforementioned protrusion 431.

[0054] In this embodiment, such as Figures 4-6 As shown, there are two branch pipes, which are defined as the first branch pipe 411 and the second branch pipe 412. The second branch pipe 412 is located between the first branch pipe 411 and the support pipe 42. Part of the top plate of the seat longitudinal beam 3 arches upward to form an arched part 3113 that matches the bottom surface of the seat frame 2. The mounting hole on the top plate corresponding to the second branch pipe 412 is defined as the first mounting hole 3111. The first mounting hole 3111 is located on the arched part 3113.

[0055] In this embodiment, such as Figures 5-8 As shown, the arched portion 3113 has a first inclined portion 31131 that gradually slopes backward from top to bottom, a first mounting hole 3111 is located on the first inclined portion 31131, and the second branch pipe 412 gradually slopes forward from top to bottom. Specifically, as... Figure 10 As shown, the second branch pipe 412 is perpendicular to the first inclined portion 31131. This provides better support for the chamber 30 of the seat longitudinal beam 3. Furthermore, the mounting hole corresponding to the first branch pipe 411 is defined as the second mounting hole 3110.

[0056] In addition, in other embodiments, the arched portion 3113 may have a second inclined portion that gradually slopes forward from top to bottom, the first mounting hole 3111 is located on the second inclined portion, and the second branch pipe 412 gradually slopes backward from top to bottom.

[0057] It is understandable that, such as Figures 1-3 As shown, the arched portion 3113 matches the bottom surface of the seat frame 2, increasing the contact area between the seat longitudinal beam 3 and the seat frame 2. By setting the inclined second branch pipe 412, the arched portion 3113 can be better supported while reliably connecting the seat longitudinal beam 3 and the seat frame 2.

[0058] To facilitate the installation of the aforementioned branch pipes and support pipes 42, such as Figures 5-8As shown, the seat longitudinal beam 3 includes an upper beam 31 and a lower beam 32, both extending along the front-rear direction of the vehicle. The cavity 30 is formed by the upper beam 31 and the lower beam 32. Specifically, the upper beam 31 includes an upper plate 311, a first mounting hole 3111, a second mounting hole 3110, a connecting hole 3112, and an arch 3113, all located on the upper plate 311. In this embodiment, the left and right sides of the upper plate 311 extend downward to form first side plates 312. The lower beam 32 includes a bottom plate 321, and the left and right sides of the bottom plate 321 extend upward to form second side plates 322. When the seat longitudinal beam 3 is in the installed state, as shown... Figure 13 As shown, the first side plate 312 is located between the two second side plates 322, and the first side plate 312 is connected to the corresponding second side plate 322. In this embodiment, the cross-section of the upper beam 31 is “︹”-shaped, and the cross-section of the lower beam 32 is “︺”-shaped. In other embodiments, the cross-section of the upper beam 31 is inverted U-shaped, and the cross-section of the lower beam 32 is U-shaped.

[0059] It is understandable that by adopting the above-mentioned upper beam 31 and lower beam 32, both first side plates 312 are fixedly connected to the corresponding second side plates 322, which increases the strength of the seat longitudinal beam 3 in the y direction.

[0060] The connection between the first side plate 312 and the second side plate 322 can be achieved by welding, such as arc welding or other welding methods, or by using fasteners. This embodiment will not be described in detail further.

[0061] In addition, in some other embodiments, the upper beam 31 may only take the form of the upper plate 311 described above, and the second side plate 322 of the lower beam 32 is connected to the upper plate 311, thereby realizing the connection between the upper beam 31 and the lower beam 32.

[0062] Furthermore, such as Figure 2 and Figure 5 As shown, the seat longitudinal beam 3 also includes a connecting beam 33 connected to the front crossbeam 111. The connecting beam 33 includes a top beam plate 331 located above the upper plate 311. The top beam plate 331 and the upper plate 311 together form the top plate of the seat longitudinal beam 3. That is to say, the top plate of the seat longitudinal beam 3 includes the top beam plate 331 and the upper plate 311.

[0063] like Figure 4 and Figure 5As shown, the left and right sides of the top beam plate 331 extend downward to form side beam plates 332. The second side plate 322 is located between the first side plate 312 and the side beam plate 332 on the corresponding side. The front edges of the two side beam plates 332 are provided with extension plates 333 extending in the left and right direction of the vehicle away from each other. The extension plates 333 and the front crossbeam 111 are respectively provided with assembly holes 3331 that are constrained by the third insertion end of the third connector 7. The third insertion end is arranged in the front and rear direction of the vehicle.

[0064] Understandably, the presence of the connecting beam 33 increases the strength of the front end of the seat longitudinal beam 3 while facilitating the connection between the front end of the seat longitudinal beam 3 and the front crossbeam 111 of the rear floor frame 11. Specifically, it connects the front end of the seat longitudinal beam 3 to the front crossbeam 111, thereby positioning the seat longitudinal beam 3 in the x-direction. Furthermore, the second side plate 322 is located between the first side plate 312 and the side beam plate 332 on the corresponding side, i.e., sandwiched between the first side plate 312 and the side beam plate 332, increasing the reliability of the connection between the upper beam 31 and the lower beam 32 at the front end of the seat longitudinal beam 3.

[0065] In addition, the position of the seat longitudinal beam 3 in the y-direction can be adjusted by designing the mounting hole 3331 as a strip hole extending along the y-direction, according to actual needs.

[0066] Furthermore, such as Figures 6-8 As shown, the front edge of the top beam plate 331 is provided with an overlapping plate 334 located above the front crossbeam 111. The bottom surface of the overlapping plate 334 has a downwardly arched protrusion 3341, which contacts the top surface of the front crossbeam 111. It can be understood that the overlapping plate 334 and the protrusion 3341 are provided to position the seat longitudinal beam 3 in the z-direction, and at the same time facilitate the alignment of the mounting hole 3331 on the extension plate 333 with the mounting hole 3331 on the front crossbeam 111, thereby facilitating the insertion of the third insertion end of the third connector 7 into the aligned mounting hole 3331.

[0067] In this embodiment, such as Figure 5 , Figure 8 and Figure 12 As shown, a portion of the overlapping plate 334 is recessed downwards, thereby forming the aforementioned protrusion 3341 at the bottom of the overlapping plate 334, and the top surface of the protrusion 3341 is the recessed area 3342. Alternatively, the protrusion 3341 can also be formed by directly protruding downwards from the bottom surface of the overlapping plate 334.

[0068] Specifically, each overlapping plate 334 has at least two protrusions 3341, which are spaced apart along the left-right direction of the vehicle. Illustratively, there may be two or more protrusions 3341. This allows for better positioning of the seat longitudinal beam 3 in the z-direction and facilitates easier insertion of the third insertion end of the third connector 7 into the aligned mounting hole 3331.

[0069] In addition, the first connector 5, the second connector 6, and the third connector 7 mentioned above are bolts or screws. The first insertion end of the first connector 5, the second insertion end of the second connector 6, and the third insertion end of the third connector 7 are all threaded sections of bolts or screws. In this case, the inner holes of the branch pipe and the support pipe 42 are threaded holes that mate with the corresponding threaded sections.

[0070] like Figure 6 and Figure 7 As shown, the base plate 321 and the two second side plates 322 enclose a defined space 320. The top edge of the two second side plates 322 is provided with a guide portion 3221 for guiding the corresponding first side plate 312 to slide into the defined space 320. The guide portion 3221 is inclined from bottom to top in a direction away from the base plate 321. For example, the guide portion 3221 is an inclined edge or an arc edge.

[0071] In this embodiment, each second side plate 322 is provided with at least two guide portions 3221 arranged at intervals along the length direction of the second side plate 322. The provision of at least two guide portions 3221 can better guide the first side plate 312, thereby allowing the first side plate 312 to slide more smoothly into the defined space 320.

[0072] like Figure 1 As shown, there are two seat longitudinal beams 3, which are spaced apart along the left and right direction of the vehicle, and each seat longitudinal beam 3 corresponds to one seat frame 2. This improves the reliability of the installation of the two seat frames 2.

[0073] This application also provides a vehicle that includes a body structure.

[0074] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0075] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the scope of protection of this application. Therefore, the patent protection scope of this application should be determined by the appended claims.

Claims

1. A vehicle body structure, characterized in that, The vehicle includes a rear floor assembly (1), a seat frame (2), and a seat longitudinal beam (3) connected to the rear floor assembly (1). The seat longitudinal beam (3) extends along the front-rear direction of the vehicle. The rear floor assembly (1) includes a rear floor frame (11) and a rear floor panel (12) connected to the rear floor frame (11). The seat longitudinal beam (3) is located above the rear floor panel (12), and the front end of the seat longitudinal beam (3) is connected to the rear floor frame (11). The two sides of the seat frame (2) arranged at intervals along the width direction of the vehicle are defined as a first side (21) and a second side (22). The first side (21) of the seat frame (2) is connected to the seat longitudinal beam (3), and the second side (22) of the seat frame (2) is connected to the rear floor frame (11).

2. The vehicle body structure according to claim 1, characterized in that, The seat frame (2) and the seat longitudinal beam (3) are respectively provided with mounting holes for the first insertion end of the first connector (5) to pass through. A cavity (30) is formed inside the seat longitudinal beam (3). A branch pipe constrained by the first insertion end is fixedly connected to the seat longitudinal beam (3) at the position corresponding to the mounting hole. At least part of the branch pipe is located inside the cavity (30).

3. The vehicle body structure according to claim 2, characterized in that, The first side (21) of the seat frame (2) is located above the seat longitudinal beam (3), and the branch pipe is arranged vertically.

4. The vehicle body structure according to claim 2, characterized in that, The rear end of the seat longitudinal beam (3) is provided with a connection hole (3112) corresponding to the rear floor panel (12) for the second insertion end of the second connector (6) to pass through. The seat longitudinal beam (3) is fixed with a support tube (42) constrained to the second insertion end at the position corresponding to the connection hole (3112). At least part of the support tube (42) is located in the cavity (30) and the support tube (42) is arranged vertically.

5. The vehicle body structure according to claim 4, characterized in that, There are at least two branch pipes, which are arranged at intervals along the length of the seat longitudinal beam (3).

6. The vehicle body structure according to claim 5, characterized in that, The two branch pipes are defined as the first branch pipe (411) and the second branch pipe (412), respectively. The second branch pipe (412) is located between the first branch pipe (411) and the support pipe (42). Part of the top plate of the seat longitudinal beam (3) arches upward to form an arched part (3113) that matches the bottom surface of the seat frame (2). The mounting hole on the top plate of the seat longitudinal beam (3) corresponding to the second branch pipe (412) is defined as the first mounting hole (3111). The arched part (3113) has a first inclined part (31131) that gradually slopes backward from top to bottom. The first mounting hole (3111) is located on the first inclined part (31131). The second branch pipe (412) gradually slopes forward from top to bottom. Alternatively, the arched portion (3113) has a second inclined portion that gradually slopes forward from top to bottom, the first mounting hole (3111) is located on the second inclined portion, and the second branch pipe (412) gradually slopes backward from top to bottom.

7. The vehicle body structure according to claim 4, characterized in that, Both the branch pipe and the support pipe (42) include a pipe body (43) located in the chamber (30). The top end of the pipe body (43) is provided with an upwardly extending extension (430). The extension (430) of the branch pipe and the extension (430) of the support pipe (42) are respectively located in the mounting hole and the connecting hole (3112). The top surface of the pipe body (43) abuts against the bottom surface of the top plate of the seat longitudinal beam (3), and the lower end of the pipe body (43) is fixedly connected to the top surface of the bottom plate (321) of the seat longitudinal beam (3). And / or, at least one of the branch pipe and the support pipe (42) has a downwardly extending protrusion (431) at the bottom end of the pipe body (43). The bottom plate (321) of the seat longitudinal beam (3) has an insertion hole for the protrusion (431) to be inserted at the position corresponding to the protrusion (431).

8. The vehicle body structure according to claim 4, characterized in that, The seat longitudinal beam (3) includes an upper beam (31) and a lower beam (32) extending along the front-rear direction of the vehicle. The cavity (30) is formed by the upper beam (31) and the lower beam (32). The upper beam (31) includes an upper plate (311). The top plate of the seat longitudinal beam (3) includes the upper plate (311). The mounting holes and connecting holes (3112) are both located on the upper plate (311). The left and right sides extend downward to form a first side plate (312). The lower beam (32) includes a bottom plate (321). The left and right sides of the bottom plate (321) extend upward to form a second side plate (322). When the seat longitudinal beam (3) is in the installed state, the first side plate (312) is located between the two second side plates (322), and the first side plate (312) is connected to the corresponding second side plate (322).

9. The vehicle body structure according to claim 8, characterized in that, The rear floor frame (11) includes a front crossbeam (111) located at least partially in front of the rear floor panel (12). The seat longitudinal beam (3) also includes a connecting beam (33) connected to the front crossbeam (111). The connecting beam (33) includes a top beam plate (331) located above the upper plate (311). The left and right sides of the top beam plate (331) extend downward to form side beam plates (332). The second side plate (322) is located between the first side plate (312) and the side beam plate (332) on the corresponding side. The front edges of the two side beam plates (332) are provided with extension plates (333) extending away from each other along the left and right direction of the vehicle. The extension plates (333) and the front crossbeam (111) are respectively provided with assembly holes (3331) that constrain the third insertion end of the third connector (7). The third insertion end is arranged along the front and rear direction of the vehicle.

10. The vehicle body structure according to claim 9, characterized in that, The top beam plate (331) has an overlapping plate (334) located above the front crossbeam (111) at its front edge. The bottom surface of the overlapping plate (334) has a downwardly arched protrusion (3341) that contacts the top surface of the front crossbeam (111). Alternatively, the bottom plate (321) and the two second side plates (322) enclose a defined space (320). The top edges of the two second side plates (322) are provided with guide portions (3221) for guiding the corresponding first side plate (312) to slide into the defined space (320).

11. A vehicle, comprising a body structure, characterized in that, The vehicle body structure is the vehicle body structure as described in any one of claims 1 to 10.

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