A connecting structure, a vehicle body structure, and a vehicle

Abstract

The embodiment of the application relates to the technical field of vehicles, and discloses a connecting structure, a vehicle body structure and a vehicle, the connecting structure comprising a pre-hanging support, the pre-hanging support being used for detachable connection with a rear quarter assembly of the vehicle, a limiting portion being arranged on the pre-hanging support, the limiting portion being used for limiting cooperation with a limiting cooperation portion on a rear floor of the vehicle to constrain the relative position of the rear quarter assembly in a vertical direction relative to the rear floor, so that when the rear quarter assembly and the rear floor are transferred to different stations, the position of the rear quarter assembly in the vertical direction relative to the rear floor can be limited by the pre-hanging support, and the rear quarter assembly is prevented from falling down and affecting the overall size of the assembled vehicle body.

Description

Technical Field

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

[0002] With the widespread application of aluminum alloy castings in lightweight automotive design, key components such as the rear floor are gradually replacing traditional steel structures with unibody aluminum alloy castings.

[0003] In steel-aluminum hybrid vehicle bodies, welding and bolting are typically used to connect the aluminum alloy rear floor and rear side panel assembly. These different connection methods mean that connecting the rear floor and rear side panel assembly requires a variety of specialized tools.

[0004] During the processing, due to the limitations of workstation space and cycle time, only one connection method can usually be provided at the same workstation. When the rear side panel assembly and the rear floor are transferred to different workstations for connection, the rear side panel assembly is prone to displacement, which makes it impossible for subsequent workstations to accurately position it and affects the overall size of the vehicle body. Utility Model Content

[0005] In view of the above problems, this application provides a connection structure, a vehicle body structure and a vehicle to solve the problem that the existing rear side panel assembly and rear floor are prone to relative displacement when transferred to different work stations for connection, which affects the overall size of the vehicle body.

[0006] According to one aspect of the embodiments of this application, a connection structure is provided, including a pre-mounted bracket for detachable connection with a rear side panel assembly of a vehicle. The pre-mounted bracket is provided with a limiting portion for limiting engagement with a limiting engagement portion on the rear floor of the vehicle to constrain the relative position of the rear side panel assembly with respect to the rear floor in the vertical direction.

[0007] In an alternative embodiment, a connector is also included, wherein the pre-mounted bracket is provided with a mounting hole, and the connector passes through the mounting hole and is threadedly connected to the rear side panel assembly to press the pre-mounted bracket onto the rear side panel assembly;

[0008] The inner wall of the mounting hole has at least a portion of a gap with the connector.

[0009] In one alternative embodiment, the pre-mounted bracket is provided with two mounting holes, and two connectors are provided, with each connector corresponding to one of the two mounting holes.

[0010] In one alternative embodiment, the limiting portion includes a first limiting plate located at one end of the pre-mounted bracket, the first limiting plate having an angle with the pre-mounted bracket, the first limiting plate being used to overlap with the end of the limiting mating portion facing the top of the vehicle to limit the position of the rear side panel assembly relative to the rear floor in the vertical direction.

[0011] In one alternative embodiment, the limiting portion further includes a second limiting plate, which is connected to the first limiting plate at one end away from the pre-hanging bracket, and the second limiting plate is at least partially used to extend to the side of the limiting mating portion.

[0012] In one alternative embodiment, the pre-mounted bracket and the limiting part are integrally formed, and a reinforcing rib is provided at the connection between the pre-mounted bracket and the limiting part.

[0013] According to another aspect of the embodiments of this application, a vehicle body structure is provided, including a rear side panel assembly, a rear floor, and a connection structure as described in any one of the first aspects. A limiting engagement portion is provided on the rear floor. A pre-mounted bracket of the connection structure is detachably connected to the rear side panel assembly. A limiting portion on the pre-mounted bracket engages with the limiting engagement portion to constrain the relative movement of the rear side panel assembly relative to the rear floor in the vertical direction.

[0014] In one alternative embodiment, the rear sidewall assembly includes a rear wheel arch inner panel and a rear reinforcement member disposed on the rear wheel arch inner panel. The rear reinforcement member has a reinforcing portion protruding toward the pre-mount bracket, and the pre-mount bracket is connected to the reinforcing portion.

[0015] In one alternative embodiment, a first flange is provided on the rear floor, and the rear wheel arch inner panel extends at least partially to the outside of the first flange and is bonded to the first flange;

[0016] The limiting fitting part is a second flange located on the side of the first flange that is away from the inner plate of the rear wheel cover. The rear reinforcing member is connected to the second flange by bolts, and the limiting part overlaps the top of the second flange.

[0017] According to another aspect of the embodiments of this application, a vehicle is provided, including the body structure described in any of the second aspects.

[0018] In the connection structure, vehicle body structure, and vehicle provided in this application embodiment, the connection structure includes a pre-mounted bracket with a limiting part. When the pre-mounted bracket is detachably connected to the rear side panel assembly of the vehicle, the limiting part engages with a limiting mating part on the rear floor of the vehicle to constrain the relative position of the rear side panel assembly relative to the rear floor in the vertical direction. This prevents the rear side panel assembly from falling downwards due to gravity and causing relative displacement with the rear floor during the transfer of the rear side panel assembly and the rear floor to different workstations, effectively improving the positioning accuracy between the rear side panel assembly and the rear floor, ensuring the assembly effect between them, and avoiding affecting the final vehicle dimensions. Furthermore, after the connection between the rear side panel assembly and the rear floor is completed, the pre-mounted bracket can be removed for reuse. Removing the pre-mounted bracket also prevents abnormal noises caused by contact between the pre-mounted bracket and the rear floor during vehicle operation.

[0019] The above description is merely an overview of the technical solutions of the embodiments of this application. In order to better understand the technical means of the embodiments of this application and to implement them in accordance with the contents of the specification, and to make the above and other objects, features and advantages of the embodiments of this application more obvious and understandable, specific implementation methods of this application are described below. Attached Figure Description

[0020] The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this application. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0021] Figure 1 A partial structural schematic diagram of the vehicle body structure provided in this application is shown;

[0022] Figure 2 It shows Figure 1 A detailed structural diagram within box A in the diagram;

[0023] Figure 3 It shows Figure 2 AA section view in the middle;

[0024] Figure 4 It shows Figure 1 A detailed structural diagram within box B in the image;

[0025] Figure 5 A schematic diagram of the connection structure provided in this application is shown;

[0026] Figure 6 An exploded view of the rear reinforcement and connecting structure in the vehicle body structure provided in this application is shown;

[0027] Figure 7 A partial structural diagram of the existing vehicle body structure is shown.

[0028] Figure label:

[0029] 10-Pre-fastened;

[0030] 100 - Pre-mounted bracket; 110 - Mounting hole; 120 - Connector; 130 - Limiting part; 131 - First limiting plate; 132 - Second limiting plate; 140 - Reinforcing rib;

[0031] 210-Rear floor; 211-Connecting plate; 212-First flange; 213-Limiting mating part; 220-Rear side panel assembly; 221-Rear wheel arch inner panel; 222-Front reinforcement; 223-Rear reinforcement; 2231-Reinforcement part. Detailed Implementation

[0032] Exemplary embodiments of the present application will now be described in more detail with reference to the accompanying drawings. Although exemplary embodiments of the present application are shown in the drawings, it should be understood that the present application may be implemented in various forms and should not be limited to the embodiments set forth herein.

[0033] This application provides a vehicle embodiment. It should be noted that this application embodiment does not limit the vehicle type. For example, the vehicle in this application embodiment can be a sedan, an off-road vehicle, a multi-purpose vehicle (MPV), or other types of vehicles.

[0034] In this application embodiment, the type of 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.

[0035] The vehicle provided in this application includes a vehicle body structure, and a power source is fixed to the vehicle body structure.

[0036] Please see Figure 1 As shown, the vehicle body structure provided in this application embodiment includes a rear side panel assembly 220 and a rear floor 210.

[0037] With the development of aluminum casting technology in the automotive field, and due to the advantages of lightweight and high performance of aluminum alloy castings, more and more vehicle models are using aluminum alloy castings instead of traditional steel solutions for the rear floor 210.

[0038] In a steel-aluminum hybrid body structure, the rear floor 210 is made of cast aluminum, while the rear sidewall assembly 220 is typically made of steel. When the rear floor 210 is joined to the rear sidewall assembly 220, a combination of various connection methods is usually employed, including FDS (Flow Drill Screw), SPR (Self-Piercing Rivet), bolts, and rivets. For example, the connection between the aluminum alloy rear floor 210 and the steel rear sidewall assembly 220 may involve both SPR and conventional welding.

[0039] However, such solutions rely on a variety of specialized tools (such as FDS equipment and SPR equipment), and in production, due to workstation space and cycle time limitations, the same workstation can often only provide one connection method, resulting in some connection points (such as the rear end of the rear side assembly 220) not being completed in time, thus causing structural stability problems.

[0040] Specifically, at the assembly station where the rear side panel assembly 220 is joined with the lower body, only ordinary spot welding can be performed, which can only meet the connection between the front of the rear side panel assembly 220 and the rear floor 210. The bolts of the rear end of the rear side panel assembly 220 can only be installed at the subsequent station. Therefore, the rear end of the rear side panel assembly 220 and the rear floor 210 lack an effective connection during the transfer to the subsequent station.

[0041] Due to the lack of effective connection, the rear end of the rear side panel assembly 220 is prone to falling off due to gravity, which causes the mounting hole 110 and mounting surface of the rear end of the rear side panel assembly 220 to shift downwards, resulting in a misalignment with the assembly position of the rear floor 210, ultimately leading to a deviation in the vehicle body dimensions.

[0042] Currently, there are two common approaches to handling this:

[0043] The first method involves repositioning the side panel assembly during the subsequent installation of the body connecting bolts. This method is feasible for vehicles with smaller body sizes and lighter rear side panel assemblies (220). However, for vehicles with larger body sizes and heavier rear ends of the rear side panel assembly (220), the weight of the rear side panel assembly (220) will naturally be inconsistent, making repositioning impossible in subsequent workstations.

[0044] The second option: Please refer to [link / reference] Figure 7 As shown, a pre-hook 10 is stamped on the rear wheel hump inner plate rear reinforcement 223 of the rear side panel assembly 220. This type of pre-hook 10 has unstable dimensions and is very easy to deform during parts production and transportation, resulting in extremely poor consistency. Moreover, this type of structure has low load-bearing capacity. During the process of bearing the rear side panel assembly 220, it will deform due to the weight of the rear side panel, causing the pre-hook function to fail.

[0045] Based on the above issues, please refer to Figure 1 As shown in the embodiment of this application, the vehicle body structure also includes a connecting structure.

[0046] Please see Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown, the connection structure provided in this embodiment includes a pre-mounted bracket 100, which can be made of a high-strength material, such as metal. The pre-mounted bracket 100 is detachably connected to the rear side panel assembly 220. A limiting part 130 is provided on the pre-mounted bracket 100, and a limiting mating part 213 is provided on the rear floor 210. The limiting part 130 and the limiting mating part 213 engage to constrain the relative position of the rear side panel assembly 220 with respect to the rear floor 210 in the vertical direction.

[0047] For example, the rear sidewall assembly 220 typically includes a rear wheel arch inner panel 221, a rear reinforcement 223, and a front reinforcement 222 (the front reinforcement 222 is close to the front of the vehicle, and the rear reinforcement 223 is close to the rear of the vehicle). The rear reinforcement 223 and the front reinforcement 222 are welded to the rear wheel arch inner panel 221 to reinforce the rear wheel arch inner panel 221.

[0048] The pre-mounted bracket 100 can be connected to the rear reinforcement 223 of the inner plate of the rear wheel hump. A connecting plate 211 can also be added to the rear floor 210 for auxiliary connection. The connecting plate 211 can be divided into a front section and a rear section, and the front section and the rear section are connected by the SPR connection method.

[0049] When assembling the rear side panel assembly 220 and the rear floor 210, first fix the pre-mounted bracket 100 to the rear reinforcement 223, and first connect the lower end of the connecting plate 211 to the rear floor 210 through the SPR connection method to form the rear floor 210 assembly, and then weld the upper end of the connecting plate 211 to the rear wheel arch inner plate 221.

[0050] After completing the above steps, the rear side panel assembly 220 and the rear floor 210 are transferred to the next work station. The middle and rear sections of the rear side panel assembly 220 are connected to the rear floor 210 by body connecting bolts. During this process, the limiting part 130 of the pre-mounted bracket 100 will engage with the limiting mating part 213 to prevent the rear side panel assembly 220 from falling down relative to the rear floor 210. This avoids relative displacement between the rear side panel assembly 220 and the rear floor 210 in the vertical direction, ensuring accurate positioning of the rear side panel assembly 220 when it is connected to the rear floor 210 in subsequent work stations.

[0051] Understandably, the pre-mounted bracket 100 can also be fixed at other locations at the rear end of the rear side panel assembly 220. However, in the area where the rear reinforcement 223 is set, the rear side panel assembly 220 has higher strength and is less prone to deformation after the pre-mounted bracket 100 is installed.

[0052] That is, after the front end of the rear side panel assembly 220 is connected to the rear floor 210, the limiting part 130 can engage with the limiting mating part 213 to limit the relative position of the rear side panel assembly 220 and the rear floor 210 in the vertical direction. During the process of transferring to different workstations for processing, it can prevent the rear side panel assembly 220 from falling downwards due to gravity and causing relative displacement with the rear floor 210, effectively improving the positioning accuracy between the rear side panel assembly 220 and the rear floor 210, so as to ensure the assembly effect between the rear side panel assembly 220 and the rear floor 210 and avoid affecting the final vehicle size.

[0053] Furthermore, after assembling the rear side panel assembly 220 and the rear floor 210, the pre-mounted bracket 100 can be removed from the rear side panel assembly 220 for reuse, effectively reducing the assembly cost between the rear side panel assembly 220 and the rear floor 210. Moreover, the small matching gap between the limiting part 130 and the limiting mating part 213 of the pre-mounted bracket 100 prevents abnormal noises from occurring due to contact between the pre-mounted bracket 100 and the rear floor 210 during vehicle operation after the pre-mounted bracket 100 is removed.

[0054] Furthermore, in some embodiments of this application, the connection structure further includes a connector 120, and the pre-mounted bracket 100 is provided with a mounting hole 110. The connector 120 passes through the mounting hole 110 and is threadedly connected to the rear side panel assembly 220 to press the pre-mounted bracket 100 onto the rear side panel assembly 220.

[0055] At least a portion of the inner wall of the mounting hole 110 has a gap with the connector 120.

[0056] For example, the connector 120 can be a rod-shaped member with a limiting cap at one end and an external thread at the other end. The limiting cap can be pressed against the side of the pre-mounted bracket 100 away from the rear side assembly 220, and the external thread is threadedly connected to the rear side assembly 220.

[0057] The size of the mounting hole 110 is larger than the size of the connector 120. When the pre-mounted bracket 100 is fixed to the rear side panel assembly 220 by the tooling, the position of the pre-mounted bracket 100 can be finely adjusted by the tooling. For example, the position of the pre-mounted bracket 100 in the vertical direction can be adjusted according to the average measurement value of the drop of the rear side panel assembly 220. After adjustment, the pre-mounted bracket 100 is fixed to the rear side panel assembly 220 by the connector 120, which effectively improves the accuracy of the installation position of the pre-mounted bracket 100.

[0058] Furthermore, the pre-mounted bracket 100 is provided with two mounting holes 110, and there are two connectors 120, with each connector 120 corresponding to one of the two mounting holes 110.

[0059] By providing two mounting holes 110 and two connectors 120, the pre-mounted bracket 100 can be prevented from rotating during use, thereby ensuring the accuracy of the pre-mounted bracket 100.

[0060] For example, the two mounting holes 110 are arranged vertically on the pre-mounted bracket 100.

[0061] For ease of use, the pre-mounted bracket 100 can be installed with the connector 120 at the supplier of the rear side panel assembly 220, and the presence of the two mounting holes 110 can prevent the pre-mounted bracket 100 from shifting during the transportation of the rear side panel assembly 220.

[0062] Furthermore, in some embodiments of this application, the limiting part 130 includes a first limiting plate 131 located at one end of the pre-mounted bracket 100. The first limiting plate 131 has an angle with the pre-mounted bracket 100. The first limiting plate 131 is used to overlap with the end of the limiting mating part 213 facing the top of the vehicle to limit the position of the rear side panel assembly 220 relative to the rear floor 210 in the vertical direction.

[0063] The first limiting plate 131 can extend toward the rear wheel arch inner plate 221 toward the rear floor 210, and it directly overlaps the top of the limiting mating part 213, which can prevent the rear end of the rear side panel assembly 220 from falling off due to gravity during transfer to subsequent work stations.

[0064] It is understandable that the angle between the first limiting plate 131 and the pre-hanging bracket 100 can be an acute angle, an obtuse angle, or a right angle. The specific angle can be adjusted according to the actual situation, as long as it can effectively overlap with the limiting mating part 213 for limiting.

[0065] Furthermore, the limiting part 130 also includes a second limiting plate 132, which is connected to the first limiting plate 131 at one end away from the pre-hanging bracket 100, and the second limiting plate 132 is at least partially used to extend to the side of the limiting mating part 213.

[0066] The second limiting plate 132 can cooperate with the side of the limiting mating part 213, which can limit the relative position of the rear side panel assembly 220 and the rear floor in the vehicle width direction, further improving the limiting mating effect between the limiting part 130 and the limiting mating part 213, and improving the limiting ability of the rear panel assembly.

[0067] Furthermore, in some embodiments of this application, the pre-hanging bracket 100 and the limiting part 130 are integrally formed, and a reinforcing rib 140 is provided at the connection between the pre-hanging bracket 100 and the limiting part 130.

[0068] The integral molding of the pre-mounted bracket 100 and the limiting part 130 can improve the overall strength of the pre-mounted bracket 100. Furthermore, the addition of a reinforcing rib 140 at the connection between the pre-mounted bracket 100 and the limiting part 130 can further enhance the strength of the pre-mounted bracket 100 and improve its limiting ability.

[0069] The reinforcing rib 140 can be one or more protruding ribs that protrude toward the side opposite to the rear side assembly 220, and adjacent ribs can intersect or be spaced apart by a certain distance.

[0070] For example, the reinforcing rib 140 consists of two convex ribs, the two ends of which intersect and form an elliptical cavity in the middle.

[0071] Furthermore, in some embodiments of this application, the rear reinforcement 223 is also provided with a reinforcement portion 2231 that protrudes toward the pre-hanging bracket 100, and the pre-hanging bracket 100 is connected to the reinforcement portion 2231.

[0072] The strength of the rear reinforcement 223 can be increased by the reinforcement 2231 to prevent the rear reinforcement 223 from deforming under stress, so that it can effectively support the rear weight of the rear side assembly 220, and also avoid the pre-mounted bracket 100 from shifting due to the deformation of the rear reinforcement 223, thus affecting the positioning accuracy.

[0073] It is understandable that the reinforcing part 2231 can be a protrusion provided on the rear reinforcing member 223, which protrudes in the direction away from the inner plate 221 of the rear wheel arch, and its shape can be adapted to the shape of the pre-mounted bracket 100.

[0074] For example, the pre-mounted bracket 100 is rectangular, the reinforcing part 2231 is also rectangular, and the corners can be rounded.

[0075] Furthermore, in some embodiments of this application, a first flange 212 is provided on the rear floor 210, and the rear wheel arch inner plate 221 extends at least partially to the outside of the first flange 212 and is bonded to the first flange 212.

[0076] For example, the first flange 212 and the rear wheel arch inner plate 221 can be bonded together with structural adhesive to seal the gap between the rear wheel arch inner plate 221 and the rear floor 210 and prevent external impurities from entering.

[0077] The limiting part 213 is a second flange located on the side of the first flange 212 away from the inner plate 221 of the rear wheel arch. The rear reinforcing member 223 is connected to the second flange by bolts, and the limiting part 130 overlaps the top of the second flange.

[0078] The second flange can be used to limit the positioning of the rear side panel assembly 220 by engaging with the limiting part 130. The second flange can also be used to connect with the rear reinforcement 223 by bolts, which can improve the stability of the connection between the rear side panel assembly 220 and the rear floor 210 and help simplify the complexity of the vehicle body structure.

[0079] Numerous specific details are set forth in the specification provided herein. However, it will be understood that embodiments of this application may be practiced without these specific details. Similarly, for the purpose of streamlining this application and aiding in understanding one or more aspects of the various embodiments, in the above description of exemplary embodiments of this application, various features of the embodiments of this application are sometimes grouped together into a single embodiment, figure, or description thereof. The claims, which follow the detailed description, are hereby expressly incorporated into that detailed description, wherein each claim itself is a separate embodiment of this application.

[0080] Those skilled in the art will understand that the modules in the device of the embodiment can be adaptively changed and placed in one or more devices different from that embodiment. Modules, units, or components in the embodiment can be combined into a single module, unit, or component, and further, they can be divided into multiple sub-modules, sub-units, or sub-components, except that at least some of such features and / or processes or units are mutually exclusive.

[0081] It should be noted that the above embodiments are illustrative of this application and not restrictive, and those skilled in the art can devise alternative embodiments without departing from the scope of the appended claims. In the claims, any reference signs placed between parentheses should not be construed as limiting the claims. The word "comprising" does not exclude the presence of elements or steps not listed in the claims. The word "a" or "an" preceding an element does not exclude the presence of a plurality of such elements. This application can be implemented by means of hardware comprising several different elements and by means of a suitably programmed computer. In the unit claims enumerating several means, several of these means may be embodied by the same item of hardware. The use of the words first, second, and third, etc., does not indicate any order. These words can be interpreted as names. The steps in the above embodiments, unless otherwise specified, should not be construed as limiting the order of execution.

Claims

1. A connection structure, characterized in that, Includes a pre-mount bracket (100) for detachable connection with the rear side panel assembly (220) of the vehicle. The pre-mount bracket (100) is provided with a limiting part (130) for limiting engagement with a limiting engagement part (213) on the rear floor (210) of the vehicle to constrain the relative position of the rear side panel assembly (220) with respect to the rear floor (210) in the vertical direction.

2. The connection structure according to claim 1, characterized in that, It also includes a connector (120), on which the pre-mounted bracket (100) is provided with a mounting hole (110), and the connector (120) passes through the mounting hole (110) and is threadedly connected to the rear side panel assembly (220) to press the pre-mounted bracket (100) onto the rear side panel assembly (220); The inner wall of the mounting hole (110) has at least a portion of a gap with the connector (120).

3. The connection structure according to claim 2, characterized in that, The pre-mounted bracket (100) is provided with two mounting holes (110), and there are two connectors (120), with each connector (120) corresponding to one of the two mounting holes (110).

4. The connection structure according to claim 1, characterized in that, The limiting part (130) includes a first limiting plate (131) located at one end of the pre-mounted bracket (100), the first limiting plate (131) having an angle with the pre-mounted bracket (100), the first limiting plate (131) being used to overlap with the end of the limiting mating part (213) facing the top of the vehicle to limit the position of the rear side panel assembly (220) relative to the rear floor (210) in the vertical direction.

5. The connection structure according to claim 4, characterized in that, The limiting part (130) further includes a second limiting plate (132), which is connected to the end of the first limiting plate (131) away from the pre-hanging bracket (100), and the second limiting plate (132) is at least partially used to extend to the side of the limiting mating part (213).

6. The connection structure according to claim 4, characterized in that, The pre-hanging bracket (100) and the limiting part (130) are integrally formed, and a reinforcing rib (140) is provided at the connection between the pre-hanging bracket (100) and the limiting part (130).

7. A vehicle body structure, characterized in that, The device includes a rear side panel assembly (220), a rear floor (210), and a connection structure as described in any one of claims 1-6. The rear floor (210) is provided with a limiting engagement part (213). The pre-mounted bracket (100) of the connection structure is detachably connected to the rear side panel assembly (220). The limiting part (130) on the pre-mounted bracket (100) engages with the limiting engagement part (213) to limit the relative movement of the rear side panel assembly (220) relative to the rear floor (210) in the vertical direction.

8. The vehicle body structure according to claim 7, characterized in that, The rear side enclosure assembly (220) includes a rear wheel arch inner plate (221) and a rear reinforcement (223). The rear reinforcement (223) is disposed on the rear wheel arch inner plate (221) and has a reinforcement portion (2231) protruding toward the pre-mounted bracket (100). The pre-mounted bracket (100) is connected to the reinforcement portion (2231).

9. The vehicle body structure according to claim 8, characterized in that, The rear floor (210) is provided with a first flange (212), and the rear wheel arch inner plate (221) extends at least partially to the outside of the first flange (212) and is bonded to the first flange (212); The limiting fitting part (213) is a second flange located on the side of the first flange (212) away from the inner plate (221) of the rear wheel cover. The rear reinforcing member (223) is connected to the second flange by bolts, and the limiting part (130) overlaps the top of the second flange.

10. A vehicle, characterized in that, Includes the vehicle body structure as described in any one of claims 7-9.

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