Vehicle rear body structure and vehicle

Abstract

The application relates to the technical field of vehicle parts, and discloses a vehicle rear body structure and a vehicle. The vehicle rear body structure comprises a rear side wall assembly, a rear lower vehicle body assembly and a reinforcing piece. The rear lower vehicle body assembly comprises a rear longitudinal beam and a lap joint piece, the lap joint piece is fixedly connected to the rear longitudinal beam, the lap joint piece comprises a protruding part protruding from the rear longitudinal beam to the outside of the vehicle along the width direction of the vehicle, and the outer edge of the protruding part is fixedly connected to the rear side wall assembly; the reinforcing piece is arranged between the protruding part and the rear longitudinal beam, one end of the reinforcing piece is fixedly connected to the side of the rear longitudinal beam facing the outside of the vehicle, and the other end of the reinforcing piece is fixedly connected to the protruding part, so as to reinforce the protruding part. The vehicle rear body structure provided by the application has the advantages that the connection structure between the rear side wall assembly and the rear lower vehicle body assembly is reasonable, and the connection between the rear side wall assembly and the rear lower vehicle body assembly is stable.

Description

Technical Field

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

[0002] With the development of vehicle manufacturing technology, consumers are increasingly demanding higher standards for the rationality of vehicle body structure and the stability of connections between different body parts.

[0003] There is a large connection between the rear side panel assembly and the rear lower body assembly of the vehicle body. The connection quality between the rear side panel assembly and the rear lower body assembly directly affects the rationality of the vehicle body structure and the stability of the connection.

[0004] In related technologies, the structural rationality and connection stability between the rear side panel assembly and the rear lower body assembly are both poor. Summary of the Invention

[0005] In view of this, the present application provides a vehicle rear body structure and vehicle, which has the following advantages: the connection structure between the rear side panel assembly and the rear lower body assembly is reasonable, and the connection between the rear side panel assembly and the rear lower body assembly is more stable.

[0006] To achieve the above objectives, the technical solution of this application embodiment is implemented as follows:

[0007] In a first aspect, embodiments of this application provide a vehicle rear body structure, including: a rear side panel assembly, a rear lower body assembly, and a reinforcing member. The rear lower body assembly includes a rear longitudinal beam and a connecting member. The connecting member is fixedly connected to the rear longitudinal beam and includes a protrusion extending outward from the rear longitudinal beam along the width direction of the vehicle. The outer edge of the protrusion is fixedly connected to the rear side panel assembly. The reinforcing member is disposed between the protrusion and the rear longitudinal beam. One end of the reinforcing member is fixedly connected to the side of the rear longitudinal beam facing outward from the vehicle, and the other end of the reinforcing member is fixedly connected to the protrusion, thereby reinforcing the protrusion.

[0008] In the vehicle rear body structure provided in this application embodiment, by providing a protrusion on the connecting member that extends the rear longitudinal beam along the width direction of the vehicle, the rear side panel assembly is fixedly connected to the outer edge of the protrusion, thereby expanding the interior space of the vehicle. Simultaneously, by adding a reinforcing member between the protrusion and the rear longitudinal beam, the protrusion is strengthened, increasing its strength and ensuring that the outer edge of the protrusion remains in the designed position. This improves the structural rationality and connection stability between the rear side panel assembly and the rear lower body assembly, thereby enhancing the vehicle's NVH performance.

[0009] In one possible implementation of this application, the reinforcing member includes a first connecting surface and a second connecting surface, the first connecting surface being fitted to the protrusion and the second connecting surface being fitted to the side of the rear longitudinal beam facing the outside of the vehicle.

[0010] In one possible implementation of this application, the reinforcing member is a plate-like structure, including a first extension plate, a second extension plate, and a connecting plate. The extension direction of the first extension plate is parallel to the extension direction of the protrusion, and the extension direction of the second extension plate is parallel to the side of the rear longitudinal beam facing the outside of the vehicle. The connecting plate connects the first extension plate and the second extension plate. The side of the first extension plate facing the protrusion is attached to the protrusion, and the side of the second extension plate facing the rear longitudinal beam is attached to the side of the rear longitudinal beam facing the outside of the vehicle.

[0011] In one possible implementation of this application, the first extension plate includes a first sub-extension plate and a second sub-extension plate, and the connecting plate includes a first sub-connecting plate and a second sub-connecting plate. The first sub-connecting plate and the second sub-connecting plate are disposed at both ends of the second extension plate along the length direction of the vehicle. The first sub-extension plate is disposed on the side of the first sub-connecting plate away from the second extension plate, and the second sub-extension plate is disposed on the side of the second sub-connecting plate away from the second extension plate.

[0012] In one possible implementation of this application, the end of the first sub-extension plate away from the second extension plate is provided with a first flange extending in the vehicle height direction, and the end of the second sub-extension plate away from the second extension plate is provided with a second flange extending in the vehicle height direction.

[0013] In one possible implementation of this application, a third flange is provided at one end of the first flange and / or the second flange near the side of the rear longitudinal beam facing the outside of the vehicle, and the third flange is attached to the side of the rear longitudinal beam facing the outside of the vehicle.

[0014] In one possible implementation of this application, the reinforcement includes a connecting portion located on the upper part of the rear longitudinal beam along the width direction of the vehicle, the connecting portion being fixedly connected to the side of the rear longitudinal beam facing the upper part of the vehicle.

[0015] In one possible implementation of this application, the connector includes an overlap portion disposed above the connecting portion. The overlap portion includes a first sub-overlap portion and a second sub-overlap portion. The first sub-overlap portion is attached to the connecting portion, and the second sub-overlap portion is attached to the side of the rear longitudinal beam facing the upper part of the vehicle.

[0016] In one possible implementation of this application, the reinforcing member is an integral structure.

[0017] Secondly, embodiments of this application provide a vehicle, which includes a vehicle body, and the vehicle body includes the vehicle rear body structure provided in any of the first aspects.

[0018] Since the vehicle provided in this application embodiment includes the vehicle rear body structure provided in the first aspect, it has the same technical effect, namely, it has the advantages of reasonable connection structure between the rear side panel assembly and the rear lower body assembly, and strong stability of the connection between the rear side panel assembly and the rear lower body assembly. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of the rear body structure of the vehicle provided in the embodiments of this application;

[0020] Figure 2 This is an exploded view of the vehicle rear body structure provided in an embodiment of this application;

[0021] Figure 3 An enlarged schematic diagram of the location of the overlapping component of the rear body structure of the vehicle provided in the embodiments of this application;

[0022] Figure 4 This is an exploded view of the vehicle rear body structure provided in an embodiment of this application;

[0023] Figure 5 A schematic diagram illustrating the arrangement of reinforcement members for the rear body structure of a vehicle provided in this application embodiment;

[0024] Figure 6 This is a cross-sectional schematic diagram showing the location of the reinforcement member in the rear body structure of a vehicle provided in an embodiment of this application.

[0025] Figure label:

[0026] 1-Rear side panel assembly; 11-Rear wheel hub package; 12-Rear side panel outer panel; 13-Taillight panel; 2-Rear lower body assembly; 21-Rear longitudinal beam; 22-Overlapping part; 221-Protrusion; 222-Overlapping part; 222a-First sub-overlapping part; 222b-Second sub-overlapping part; 23-Rear floor; 24-Rear bumper; 25-Rear frame connector; 26-Rear skirt; 3-Reinforcing member; 31-First extension plate; 31a-First sub-extension plate; 31b-Second sub-extension plate; 311-First connecting surface; 32-Second extension plate; 321-Second connecting surface; 33-Connecting plate; 33a-First sub-connecting plate; 33b-Second sub-connecting plate; 34-First flange; 35-Second flange; 36-Third flange; 37-Connecting part. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the specific technical solutions of this application will be further described in detail below with reference to the accompanying drawings of the embodiments of this application. The following embodiments are used to illustrate this application, but are not intended to limit the scope of this application.

[0028] In the embodiments 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 indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the embodiments of this application, unless otherwise stated, "multiple" means two or more.

[0029] Furthermore, in the embodiments of this application, directional terms such as "upper," "lower," "left," and "right" are defined relative to the positions in which the components are schematically placed in the accompanying drawings. It should be understood that these directional terms are relative concepts, used for relative description and clarification, and can change accordingly depending on the position of the components in the accompanying drawings.

[0030] In the embodiments of this application, unless otherwise explicitly specified and limited, the term "connection" should be interpreted broadly. For example, "connection" can mean a fixed connection, a detachable connection, or an integral part; it can mean a direct connection or an indirect connection through an intermediate medium.

[0031] In embodiments of this application, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0032] In the embodiments of this application, the terms "exemplary" or "for example" are used to indicate that something is an example, illustration, or description. Any embodiment or design that is described as "exemplary" or "for example" in the embodiments of this application should not be construed as being more preferred or advantageous than other embodiments or design. Specifically, the use of the terms "exemplary" or "for example" is intended to present the relevant concepts in a specific manner.

[0033] This application provides a vehicle. It should be noted that the vehicle in this application can refer to large automobiles, small automobiles, special-purpose vehicles, trams, trolleybuses, or electric vehicles, etc., and this application does not limit it. For example, according to vehicle type, the vehicle in this application can be a sedan, an off-road vehicle, a multi-purpose vehicle (MPV), or other types of vehicles.

[0034] For a vehicle, the general term includes the vehicle body. The vehicle body can be divided according to function, such as windows, doors, driver's compartment, passenger compartment, engine compartment, and luggage compartment. According to its distance from the vehicle's front to rear, the vehicle body can be divided into the front body, middle body, and rear body. The front body generally includes the front bumper, front longitudinal beams, front fenders, hood, and front bulkhead. The middle body generally includes the doors, roof, and middle lower body assembly. The rear body generally includes the luggage compartment and luggage compartment lid, rear bumper, rear side panels, and rear lower body assembly.

[0035] With the development of vehicle manufacturing technology, consumers are increasingly demanding higher standards for the structural rationality and connection stability of vehicle bodies. Specifically, comprehensive indicators of vehicle manufacturing quality can be measured using noise, vibration, and harshness (NVH). The structural rationality and connection stability of the vehicle body significantly influence its NVH performance.

[0036] For example, in the case of electric vehicles, the power system uses batteries and electric motors for driving. Compared to the engine-driven power system of traditional fuel vehicles, the noise of the electric vehicle's power system is almost silent. The main sources of sound transmitted to the passenger compartment during the operation of an electric vehicle are wind noise from the vehicle's speed and road noise generated by the friction between the tires and the ground.

[0037] To address this, since there is a large connection between the rear side panel assembly and the lower body assembly of the vehicle body, improving the structural rationality and connection stability between the rear side panel assembly and the rear lower body assembly of the vehicle body will enhance the vehicle's NVH performance.

[0038] In view of this, the present application provides a vehicle rear body structure with the advantages of reasonable connection structure between the rear side panel assembly and the rear lower body assembly, and strong stability of the connection between the rear side panel assembly and the rear lower body assembly.

[0039] Reference Figures 1 to 6 The vehicle rear body structure provided in this application embodiment includes a rear side panel assembly 1, a rear lower body assembly 2, and a reinforcing member 3.

[0040] Specifically, the rear lower body assembly 2 includes a rear longitudinal beam 21 and a connecting member 22, which is fixedly connected to the rear longitudinal beam 21. The connecting member 22 includes a protrusion 221 that protrudes outward from the rear longitudinal beam 21 along the width direction of the vehicle. The side of the protrusion 221 near the rear side panel assembly 1 is fixedly connected to the rear side panel assembly 1. A reinforcing member 3 is disposed between the protrusion 221 and the rear longitudinal beam 21. One end of the reinforcing member 3 is fixedly connected to the side of the rear longitudinal beam 21 facing outward from the vehicle, and the other end of the reinforcing member 3 is fixedly connected to the protrusion 221, thereby reinforcing the protrusion 221.

[0041] It should be noted that, in this embodiment, the specific structural form of the rear side panel assembly 1 is not limited, and may vary depending on the specific structural form of different vehicles. For example, refer to... Figure 1 and Figure 2 In this embodiment, the protrusion 221 can be positioned at the rear of the vehicle's rear wheel. Therefore, the rear side panel assembly 1 may include a rear wheel hubcap 11, a rear side panel outer plate 12, and a taillight plate 13.

[0042] Furthermore, the material of the rear side panel assembly 1 is not limited in this embodiment. For example, the rear side panel assembly 1 can be made of steel; to meet the lightweight requirements of the vehicle, it can also be made of aluminum alloy or other materials. In addition, the manufacturing method of the rear side panel assembly 1 is not limited in this embodiment. For example, the rear side panel assembly 1 can be manufactured using a one-piece die-casting process, or it can be manufactured using a splicing technique.

[0043] Based on this, the material of the rear lower body assembly 2 is not limited in this embodiment. For example, the rear lower body assembly 2 can be made of steel; at the same time, in order to meet the requirements of vehicle lightweighting, the rear lower body assembly 2 can also be made of aluminum alloy or other materials.

[0044] Furthermore, the specific structure of the rear lower body assembly 2 is not limited in this embodiment. Specifically, the rear lower body assembly 2 may include a rear floor 23, a rear longitudinal beam 21, a rear bumper 24, etc. The rear longitudinal beam 21 can connect the rear frame connector 25 and the rear skirt 26. In this embodiment, the rear frame connector 25 can be manufactured as a casting, and can be used to connect the vehicle's sill beam and the vehicle's rear longitudinal beam 21.

[0045] In this embodiment, the structural form of the rear longitudinal beam 21 is not limited. For example, the rear longitudinal beam 21 can be formed by stamping high-strength steel plate or by making a square tube structure from aluminum alloy profile as the rear longitudinal beam 21 in this embodiment.

[0046] In this embodiment, the lap joint 22 acts as a medium between the rear sidewall assembly 1 and the rear longitudinal beam 21, with one side of the lap joint 22 fixedly connected to the rear longitudinal beam 21. The lap joint 22 also includes a protrusion 221 that extends outward from the rear longitudinal beam 21 along the width direction of the vehicle.

[0047] For a vehicle, the relative positions of its components can be described using the vehicle's length, width, and height directions.

[0048] In this regard, the overlapping member 22 is projected onto the rear longitudinal beam 21 along the height direction of the vehicle, and has a portion located on the side of the rear longitudinal beam 21 facing the outside of the vehicle along the width direction of the vehicle, which is the protrusion 221.

[0049] In this embodiment, the specific structural form of the overlapping member 22 is not limited; for example, refer to... Figures 2 to 5 The lap joint 22 can be configured as a plate-like structure and extend along the width direction of the vehicle. Alternatively, in some embodiments of this application, the lap joint 22 can extend along a direction forming an angle with the width direction of the vehicle. The material of the lap joint 22 is not limited in these embodiments; for example, in some embodiments, a 0.8 mm thick high-hardness, high-wear-resistant, high-chromium steel plate can be used to manufacture the lap joint 22.

[0050] Furthermore, in this embodiment, the shape of the protrusion 221 is not limited. For example, the main structure of the protrusion 221 can be set to a rectangle; or the main structure of the protrusion 221 can be set to a triangle or an arc shape. Specifically, the shape of the protrusion 221 can be set according to the shape of the part of the rear side assembly 1 used to connect with the connecting member 22.

[0051] Based on this, the outer edge of the protrusion 221 is fixedly connected to the rear side panel assembly 1. The outer edge of the protrusion 221 refers to the side of the circumferential edge of the protrusion 221 facing outwards from the vehicle. For example, see... Figure 3 For the main structure of the protrusion 221, which is trapezoidal in shape, the outer edge of the protrusion 221 refers to the circumferential edge of the other three sides besides the side where the protrusion 221 is connected to the rear longitudinal beam 21.

[0052] In this embodiment, the connection method of fixing the outer edge of the protrusion 221 to the rear side panel assembly 1 is not limited. For example, the outer edge of the protrusion 221 can be fixedly connected to the rear side panel assembly 1 by welding or bonding.

[0053] Specifically, refer to Figure 3This is a schematic diagram showing the connection between the outer edge of the protrusion 221 and the rear side assembly 1 in some embodiments of this application.

[0054] Since the protrusion 221 extends out of the rear longitudinal beam 21, the connection between the protrusion 221 and the rear side assembly 1 may be affected by external forces or stress, which may cause the outer edge of the protrusion 221 to deform, resulting in the outer edge of the protrusion 221 moving up or down.

[0055] For example, when the rear side panel assembly 1 and the protrusion 221 are joined and welded together by relative movement along the width direction of the vehicle, due to the multi-angle overlap between the inner plate of the rear wheel hub 11 and the outer plate 12 of the rear side panel assembly 1 and the protrusion 221, as well as the influence of the assembly precision of the rear side panel assembly 1, the outer edge of the protrusion 221 may shift upwards. This may result in partial spot welding or gaps at the corners of the connection between the rear side panel assembly 1 and the protrusion 221. These situations may cause breaks in the continuity of the connection between the rear side panel assembly 1 and the protrusion 221, thus compromising the sealing between them and potentially leading to low airtightness of the vehicle body. Consequently, wind noise from vehicle speed and road noise from tire friction during driving will be significantly transmitted into the passenger compartment. Therefore, the above-mentioned situations can cause problems such as low air tightness of the vehicle body, affecting the NVH performance of the vehicle body.

[0056] Based on this, in the vehicle rear body structure provided in the embodiments of this application, a reinforcing member 3 is further provided between the protrusion 221 and the rear longitudinal beam 21. One end of the reinforcing member 3 is fixedly connected to the side of the rear longitudinal beam 21 facing the outside of the vehicle, and the other end of the reinforcing member 3 is fixedly connected to the protrusion 221.

[0057] Here, since the protrusion 221 protrudes from the rear longitudinal beam 21 along the width direction of the vehicle, the side of the rear longitudinal beam 21 facing the outside of the vehicle corresponds to the protrusion 221. It is more convenient to install the reinforcing member 3 between the protrusion 221 and the side of the rear longitudinal beam 21 facing the outside of the vehicle.

[0058] Thus, in the vehicle rear body structure provided in this application embodiment, by providing a protrusion 221 on the overlapping member 22 that protrudes from the rear longitudinal beam 21 along the width direction of the vehicle, the rear side panel assembly 1 is fixedly connected to the outer edge of the protrusion 221, thereby expanding the interior space of the vehicle. Simultaneously, by adding a reinforcing member 3 between the protrusion 221 and the rear longitudinal beam 21, the protrusion 221 is strengthened using the reinforcing member 3. This enhances the strength of the protrusion 221, ensuring that the outer edge of the protrusion 221 remains in the designed position, preventing misalignment between the rear side panel assembly 1 and the protrusion 221, and further ensuring the continuity of the connection between the rear side panel assembly 1 and the protrusion 221. Therefore, the vehicle rear body structure provided in this application embodiment can improve the rationality of the structure and the stability of the connection between the rear side panel assembly 1 and the rear lower body assembly 2 of the vehicle body. Based on this, the vehicle rear body structure provided in this application embodiment can ensure the continuity of the connection between the rear side panel assembly 1 and the protrusion 221, and also ensure the sealing between the rear side panel assembly 1 and the protrusion 221, thereby reducing the degree of wind noise and road noise transmitted to the cab, making the cab have a better environment, and thus improving the vehicle's NVH performance.

[0059] Based on this, in some embodiments of this application, the connection between the reinforcing member 3 and the protrusion 221 is configured as a surface connection; at the same time, the connection between the reinforcing member 3 and the side of the rear longitudinal beam 21 facing the outside of the vehicle is also configured as a surface connection.

[0060] Specifically, refer to Figure 6 In this embodiment of the application, the reinforcing member 3 includes a first connecting surface 311 and a second connecting surface 321. The first connecting surface 311 is attached to the protrusion 221, and the second connecting surface 321 is attached to the side of the rear longitudinal beam 21 facing the outside of the vehicle.

[0061] It should be noted that, in this embodiment, the shapes of the first connecting surface 311 and the second connecting surface 321 are not limited. The first connecting surface 311 and the second connecting surface 321 can be planar or curved. Specifically, the first connecting surface 311 can be adapted to fit the shape of the part where the protrusion 221 fits with the first connecting surface 311. The second connecting surface 321 can be adapted to fit the shape of the part where the side of the rear longitudinal beam 21 facing the outside of the vehicle fits with the second connecting surface 321.

[0062] For example, refer to Figure 6If the main body shape of the portion where the protrusion 221 fits against the first connecting surface 311 is planar, the first connecting surface 311 can also be planar. Similarly, if the portion where the protrusion 221 fits against the first connecting surface 311 has a boss or groove, corresponding bosses and grooves can be provided on the first connecting surface 311 to ensure proper fit between the first connecting surface 311 and the protrusion 221. The design of the second connecting surface 321 can also be adapted according to the above description.

[0063] It should be noted that, in this embodiment, the first connecting surface 311 and the protrusion 221 can be fixedly bonded together by welding or by riveting. Similarly, the second connecting surface 321 can be fixedly bonded to the side of the rear longitudinal beam 21 facing the outside of the vehicle by welding or by riveting; this embodiment does not limit the specific bonding method used.

[0064] Thus, in this embodiment, by setting the connection between the reinforcing member 3 and the protrusion 221 as a close-fitting surface connection, and also setting the connection between the reinforcing member 3 and the side of the rear longitudinal beam 21 facing the outside of the vehicle as a close-fitting surface connection, the contact area between the reinforcing member 3 and the protrusion 221 and the side of the rear longitudinal beam 21 facing the outside of the vehicle can be increased, thereby improving the effectiveness and stability of the connection between the reinforcing member 3 and the protrusion 221 and the side of the rear longitudinal beam 21 facing the outside of the vehicle. Simultaneously, through the above-mentioned arrangement, the support effect of the reinforcing member 3 on the protrusion 221 can also be improved, further enhancing the structural rationality and connection stability between the rear side panel assembly 1 and the rear lower body assembly 2 of the vehicle body, and further improving the NVH performance of the vehicle.

[0065] It should be noted that the specific structural form of the reinforcing member 3 is not limited in this embodiment. The reinforcing member 3 can be made into a frame structure, a plate structure, etc. In addition, the shape of the main structure of the reinforcing member 3 is not limited in this embodiment. For example, the main structure of the reinforcing member 3 can be set as a triangle, with the two sides of the triangle fixedly connected to the protrusion 221 and the side of the rear longitudinal beam 21 facing the outside of the vehicle, respectively; or the main structure of the reinforcing member 3 can be set as a rectangle, with the two adjacent sides of the rectangle fixedly connected to the protrusion 221 and the side of the rear longitudinal beam 21 facing the outside of the vehicle, respectively.

[0066] Reference Figure 5 In some embodiments of this application, the reinforcing member 3 can be configured as a plate-like structure. Specifically, refer to... Figure 5The reinforcing member 3 includes a first extension plate 31, a second extension plate 32, and a connecting plate 33. The extension direction of the first extension plate 31 is parallel to the extension direction of the protrusion 221, and the extension direction of the second extension plate 32 is parallel to the side of the rear longitudinal beam 21 facing the outside of the vehicle. The connecting plate 33 connects the first extension plate 31 and the second extension plate 32. Furthermore, the side of the first extension plate 31 facing the protrusion 221 is attached to the protrusion 221, and the side of the second extension plate 32 facing the rear longitudinal beam 21 is attached to the side of the rear longitudinal beam 21 facing the outside of the vehicle.

[0067] For example, refer to Figure 4 and Figure 5 In some embodiments of the application, if the extension direction of the protrusion 221 is the width direction of the vehicle, the extension direction of the first extension plate 31 can also be set to be along the width direction of the vehicle. If the rear longitudinal beam 21 extends along the height direction of the vehicle towards the side facing the outside of the vehicle, the extension direction of the second extension plate 32 can also be set to be along the height direction of the vehicle.

[0068] It should be noted that the relative positions of the first extension plate 31, the second extension plate 32, and the connecting plate 33 are not limited in this embodiment. For example, the first extension plate 31 and the second extension plate 32 can be aligned along the height direction of the vehicle. In this case, the number of connecting plates 33 can be set to one. Specifically, the connecting plate 33 can be placed on the same side of the first extension plate 31 and the second extension plate 32, extending along the height direction of the vehicle. Thus, the first extension plate 31, the second extension plate 32, and the connecting plate 33 form a "π" shaped structure. Alternatively, one end of the connecting plate 33 can be connected to the end of the first extension plate 31 facing the rear of the vehicle, and the other end of the connecting plate 33 can be connected to the end of the second extension plate 32 facing the front of the vehicle. Thus, the first extension plate 31, the second extension plate 32, and the connecting plate 33 form a "Z" shaped structure.

[0069] In addition, in some embodiments of this application, the number of connecting plates 33 can be set to two. The two connecting plates 33 are respectively set at the two ends of the first extension plate 31 and the second extension plate 32, which are aligned along the height direction of the vehicle, along the length direction of the vehicle. In this way, a "U"-shaped structure is formed between the first extension plate 31, the second extension plate 32 and the two connecting plates 33.

[0070] Based on this, the side of the first extension plate 31 facing the protrusion 221 is attached to the protrusion 221, and the side of the second extension plate 32 facing the rear longitudinal beam 21 is attached to the side of the rear longitudinal beam 21 facing the outside of the vehicle. It can be considered that the side of the first extension plate 31 facing the protrusion 221 forms the aforementioned first connecting surface 311, and the side of the second extension plate 32 facing the side of the rear longitudinal beam 21 facing the outside of the vehicle forms the aforementioned second connecting surface 321.

[0071] The connection method between the first extension plate 31 and the protrusion 221, and the connection method between the second extension plate 32 and the side of the rear longitudinal beam 21 facing the outside of the vehicle, can refer to the aforementioned settings of the first connecting surface 311 and the second connecting surface 321.

[0072] By designing the reinforcing member 3 as a plate-like structure, its connecting and supporting functions can be ensured while simplifying its shape and reducing its weight, thus contributing to vehicle weight reduction. Furthermore, by attaching the first extension plate 31 of the reinforcing member 3 to the protrusion 221 and the second extension plate 32 of the reinforcing member 3 to the side of the rear longitudinal beam 21 facing the vehicle's exterior, the connection between the reinforcing member 3 and the protrusion 221, as well as the connection between the reinforcing member 3 and the rear longitudinal beam 21, can be configured as a surface connection. This improves the effectiveness and stability of the connection between the reinforcing member 3 and the protrusion 221, and the side of the rear longitudinal beam 21 facing the vehicle's exterior.

[0073] Based on this, refer to Figure 5 In some embodiments of this application, the number of first extension plates 31 is set to two, the number of connecting plates 33 is also set to two, and the number of second extension plates 32 is set to one.

[0074] For ease of distinction, the two first extension plates 31 can be referred to as the first sub-extension plate 31a and the second sub-extension plate 31b, respectively; and the two connecting plates 33 can be referred to as the first sub-connecting plate 33a and the second sub-connecting plate 33b, respectively.

[0075] Specifically, refer to Figure 5 The first extension plate 31 includes a first sub-extension plate 31a and a second sub-extension plate 31b, and the connecting plate 33 includes a first sub-connecting plate 33a and a second sub-connecting plate 33b. The first sub-connecting plate 33a and the second sub-connecting plate 33b are disposed at both ends of the second extension plate 32 along the length direction of the vehicle. Furthermore, the first sub-extension plate 31a is disposed on the side of the first sub-connecting plate 33a away from the second extension plate 32, and the second sub-extension plate 31b is disposed on the side of the second sub-connecting plate 33b away from the second extension plate 32.

[0076] For example, refer to Figure 5In some embodiments of this application, the second extension plate 32 can be configured to extend along the height direction of the vehicle, and the first sub-extension plate 31a and the second sub-extension plate 31b can be configured to extend along the width direction of the vehicle. Furthermore, the second extension plate 32 is positioned between the first sub-extension plate 31a and the second sub-extension plate 31b along the length direction of the vehicle. Based on this, a first sub-connecting plate 33a can be used to connect the first sub-extension plate 31a and the second extension plate 32, and a second sub-connecting plate 33b can be used to connect the second sub-extension plate 31b and the second extension plate 32.

[0077] For ease of description, one of the first sub-extension plates 31a and the second sub-extension plate 31b located at the front of the vehicle can be referred to as the first sub-extension plate 31a, and the other as the second sub-extension plate 31b; similarly, one of the first sub-connecting plates 33a and the second sub-connecting plate 33b located at the front of the vehicle can be referred to as the first sub-connecting plate 33a, and the other as the second sub-connecting plate 33b.

[0078] For example, refer to Figure 5 In this embodiment, the first sub-connecting plate 33a can be connected to one end of the second extension plate 32 corresponding to the front of the vehicle, and the second sub-connecting plate 33b can be connected to one end of the second extension plate 32 corresponding to the rear of the vehicle. Simultaneously, the first sub-connecting plate 33a can be connected to one end of the first sub-extension plate 31a corresponding to the rear of the vehicle, and the second sub-connecting plate 33b can be connected to one end of the second sub-extension plate 31b corresponding to the front of the vehicle.

[0079] Based on this, refer to Figure 5 By adapting the positions of the first sub-extension plate 31a, the second extension plate 32, and the second sub-extension plate 31b along the length of the vehicle, it is possible to align the end of the first sub-extension plate 31a corresponding to the rear of the vehicle with the end of the second extension plate 32 corresponding to the front of the vehicle along the length of the vehicle, and to align the end of the second sub-extension plate 31b corresponding to the front of the vehicle with the end of the second extension plate 32 corresponding to the rear of the vehicle along the length of the vehicle. This allows the first sub-connecting plate 33a and the second sub-connecting plate 33b to extend along the height of the vehicle.

[0080] Additionally, refer to Figure 5 In this embodiment, the main structures of the first sub-connecting plate 33a and the second sub-connecting plate 33b can both be set as right-angled triangles. One right-angled side of the right-angled triangle can be connected to the second extension plate 32, and the other right-angled side of the right-angled triangle can be connected to the corresponding first sub-extension plate 31a or second sub-extension plate 31b.

[0081] Thus, referring to Figure 5With the above configuration, the first sub-extension plate 31a, the first sub-connecting plate 33a, the second extension plate 32, the second sub-connecting plate 33b, and the second sub-extension plate 31b form an “M”-shaped structure.

[0082] Thus, through the above arrangement, the first sub-extension plate 31a and the second sub-extension plate 31b can be respectively attached to different parts of the overlapping member 22 along the vehicle length direction, further enhancing the reinforcing effect of the reinforcing member 3 on the overlapping member 22. Simultaneously, by placing the second extension plate 32 between the first sub-extension plate 31a and the second sub-extension plate 31b, the reinforcing member 3 provided in this embodiment has a regular shape and reasonable structure, and can provide reliable support for both the first sub-extension plate 31a and the second sub-extension plate 31b using the second extension plate 32.

[0083] Based on this, refer to Figure 5 In some embodiments of this application, a first flange 34 extending in the vehicle height direction is provided at the end of the first sub-extension plate 31a away from the second extension plate 32; and a second flange 35 extending in the vehicle height direction is provided at the end of the second sub-extension plate 31b away from the second extension plate 32.

[0084] Specifically, refer to Figure 5 For the first sub-extension plate 31a and the second sub-extension plate 31b, which are located at the front of the vehicle, one is called the first sub-extension plate 31a and the other is called the second sub-extension plate 31b. The end of the first sub-extension plate 31a away from the second sub-extension plate 32 refers to the end of the first sub-extension plate 31a corresponding to the front of the vehicle; the end of the second sub-extension plate 31b away from the second sub-extension plate 32 is the end of the second sub-extension plate 31b corresponding to the rear of the vehicle.

[0085] It should be noted that, in this embodiment, the angles of the first flange 34 and the second flange 35 are not limited. For example, refer to... Figure 5 The first flange 34 can be disposed on the side of the first sub-extension plate 31a away from the overlap member 22, and the first flange 34 can be configured to extend along the height direction of the vehicle. At the same time, the second flange 35 can be disposed on the side of the second sub-extension plate 31b away from the overlap member 22, and the second flange 35 can be configured to extend along the height direction of the vehicle.

[0086] In this way, the first flange 34 can be used to reinforce the end of the first sub-extension plate 31a away from the second extension plate 32, and the second flange 35 can be used to reinforce the end of the second sub-extension plate 31b away from the second extension plate 32. Therefore, the structural strength of the first sub-extension plate 31a and the second sub-extension plate 31b can be strengthened, and the reinforcing effect of the first sub-extension plate 31a and the second sub-extension plate 31b on the overlapping member 22 can be further enhanced.

[0087] Based on this, refer to Figure 5 In some embodiments of this application, a third flange 36 is provided at one end of the first flange 34 or the second flange 35 near the side of the rear longitudinal beam 21 facing the outside of the vehicle, and the third flange 36 is attached to the side of the rear longitudinal beam 21 facing the outside of the vehicle.

[0088] It should be noted that, in the embodiments of this application, a third flange 36 may be provided at one end of the first flange 34 near the side of the rear longitudinal beam 21 facing the outside of the vehicle, or a third flange 36 may be provided at one end of the second flange 35 near the side of the rear longitudinal beam 21 facing the outside of the vehicle, or a third flange 36 may be provided at the ends of both the first flange 34 and the second flange 35 near the side of the rear longitudinal beam 21 facing the outside of the vehicle.

[0089] Based on this, the shape of the third flange 36 can be adapted to the part of the rear longitudinal beam 21 facing the outside of the vehicle corresponding to the third flange 36, so that the third flange 36 can fit into the side of the rear longitudinal beam 21 facing the outside of the vehicle.

[0090] It should be noted that, in the embodiments of this application, the third flange 36 and the side of the rear longitudinal beam 21 facing the outside of the vehicle can be fixedly attached together by welding, or the third flange 36 and the side of the rear longitudinal beam 21 facing the outside of the vehicle can be fixedly attached together by riveting.

[0091] In this way, by setting the third flange 36 and attaching the third flange 36 to the side of the rear longitudinal beam 21 facing the outside of the vehicle, the connection between the rear longitudinal beam 21 and the reinforcing member 3 can be further strengthened.

[0092] Additionally, refer to Figure 4 and Figure 5 In some embodiments of this application, the reinforcing member 3 is connected to the upper part of the rear longitudinal beam 21. Specifically, refer to... Figure 4 The reinforcing member 3 includes a connecting portion 37 located on the upper part of the rear longitudinal beam 21 along the width direction of the vehicle, and the connecting portion 37 is fixedly connected to the side of the rear longitudinal beam 21 facing the upper part of the vehicle.

[0093] Specifically, refer to Figure 4 and Figure 5 The connecting portion 37 can be configured as a plate-like structure, and this plate-like structure can be attached to the side of the rear longitudinal beam 21 facing the upper part of the vehicle. Furthermore, for the reinforcing member 3 including the first sub-extension plate 31a and the second sub-extension plate 31b, the number of connecting portions 37 can be set to two corresponding to the first sub-extension plate 31a and the second sub-extension plate 31b, and the main structure of the two connecting portions 37 can be aligned with the first extension plate 31a and the second sub-extension plate 31b, respectively.

[0094] Additionally, refer to Figure 5 In some embodiments of this application, the plane where the connecting portion 37 is located and the plane where the first extension plate 31 is located can be offset along the height direction of the vehicle. For this purpose, a transition portion can be provided between the connecting portion 37 and the first extension plate 31, so that the shape of the transition portion is adapted to the edge portion between the side of the rear longitudinal beam 21 facing the outside of the vehicle and the side of the rear longitudinal beam 21 facing the upper part of the vehicle, so that the transition portion can fit into the aforementioned edge portion.

[0095] Based on this, the connecting part 37 can be fixedly and attached to the side of the rear longitudinal beam 21 facing the upper part of the vehicle by welding, or the connecting part 37 can be fixedly and attached to the side of the rear longitudinal beam 21 facing the upper part of the vehicle by riveting.

[0096] Thus, with the above arrangement, the connecting part 37 can be used to connect to the side of the rear longitudinal beam 21 facing the upper part of the vehicle. Based on the fact that the reinforcing member 3 is connected to the side of the rear longitudinal beam 21 facing the outside of the vehicle, the connection method between the reinforcing member 3 and the rear longitudinal beam 21 can be expanded, making the connection between the rear longitudinal beam 21 and the reinforcing member 3 more stable.

[0097] Based on this, refer to Figure 4 In some embodiments of this application, the lap joint 22 is also fixedly connected to the side of the rear longitudinal beam 21 facing the upper part of the vehicle.

[0098] Specifically, refer to Figure 4 The lap member 22 includes an lap portion 222, which is disposed above the connecting portion 37 of the reinforcing member 3. Furthermore, the lap portion 222 includes a first sub-lap portion 222a and a second sub-lap portion 222b. The first sub-lap portion 222a is attached to the connecting portion 37 of the reinforcing member 3, and the second sub-lap portion 222b is attached to the side of the rear longitudinal beam 21 facing the upper part of the vehicle.

[0099] Furthermore, refer to Figure 4 The overlapping portion 222 can be configured as a plate-like structure extending along the width direction of the vehicle, and the connecting portion 37 of the reinforcing member 3 can be disposed between the overlapping portion 222 and the side of the rear longitudinal beam 21 facing the upper part of the vehicle.

[0100] The shape of the overlapping portion 222 can also be adapted to fit the position of the connecting portion 37. For details, refer to... Figure 4For the portion of the rear longitudinal beam 21 with the connecting portion 37 on the side facing the upper part of the vehicle, it is equivalent to forming a protrusion on the side of the rear longitudinal beam 21 facing the upper part of the vehicle. In this case, a corresponding protrusion can be provided on the overlapping portion 222 at the position of the protrusion, so that the position of the overlapping portion 222 with the protrusion fits with the connecting portion 37 of the reinforcing member 3, and the position of the overlapping portion 222 without the protrusion fits with the part of the rear longitudinal beam 21 facing the upper part of the vehicle where the connecting portion 37 is provided.

[0101] In addition, in some embodiments of this application, the reinforcing member 3 is configured as a single-piece structure. For example, the reinforcing member 3 can be manufactured by casting. Alternatively, if the reinforcing member 3 is a plate-like structure, it can also be manufactured as a single-piece structure by stamping.

[0102] For example, refer to Figure 5 For the reinforcing member 3 in this application embodiment, including the aforementioned third flange 36, connecting part 37, first sub-extension plate 31a, second sub-extension plate 31b, second extension plate 32, first sub-connecting plate 33a and second sub-connecting plate 33b, the reinforcing member 3 can be manufactured by multiple stamping processes.

[0103] Additionally, it should be noted that in the embodiments of this application, the hot melt rotary tapping and riveting (FDS) process can be used for the mutually fitting parts. The FDS process has the advantages of being able to connect structural parts of different materials and being able to connect on one side, which can improve production efficiency and process accuracy.

[0104] The sequence numbers of the embodiments in this application are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments. The above are merely preferred embodiments of this application and do not limit the patent scope of this application. Any equivalent structural or procedural transformations made based on 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 vehicle rear body structure, characterized in that, include: Rear side panel assembly; The rear lower body assembly includes a rear longitudinal beam and a connecting member, the connecting member being fixedly connected to the rear longitudinal beam, the connecting member including a protrusion extending outward from the rear longitudinal beam along the width direction of the vehicle, the outer edge of the protrusion being fixedly connected to the rear side panel assembly; A reinforcing member is disposed between the protrusion and the rear longitudinal beam. One end of the reinforcing member is fixedly connected to the side of the rear longitudinal beam facing the outside of the vehicle, and the other end of the reinforcing member is fixedly connected to the protrusion, for reinforcing the protrusion. The reinforcing member is a plate-shaped structure, comprising a first extension plate, a second extension plate, and a connecting plate. The extension direction of the first extension plate is parallel to the extension direction of the protrusion, and the extension direction of the second extension plate is parallel to the side of the rear longitudinal beam facing the outside of the vehicle. The connecting plate is connected between the first extension plate and the second extension plate. The side of the first extension plate facing the protrusion is attached to the protrusion, and the side of the second extension plate facing the rear longitudinal beam is attached to the side of the rear longitudinal beam facing the outside of the vehicle. The first extension plate includes a first sub-extension plate and a second sub-extension plate, and the connecting plate includes a first sub-connecting plate and a second connecting plate. The first sub-connecting plate and the second sub-connecting plate are disposed at both ends of the second extension plate along the length direction of the vehicle.

2. The vehicle rear body structure according to claim 1, characterized in that, The reinforcing member includes a first connecting surface and a second connecting surface, the first connecting surface being attached to the protrusion, and the second connecting surface being attached to the side of the rear longitudinal beam facing the outside of the vehicle.

3. The vehicle rear body structure according to claim 1, characterized in that, The first sub-extension plate is disposed on the side of the first sub-connecting plate away from the second extension plate, and the second sub-extension plate is disposed on the side of the second sub-connecting plate away from the second extension plate.

4. The vehicle rear body structure according to claim 1, characterized in that, The first sub-extension plate has a first flange extending along the vehicle height direction at one end away from the second extension plate, and the second sub-extension plate has a second flange extending along the vehicle height direction at one end away from the second extension plate.

5. The vehicle rear body structure according to claim 4, characterized in that, A third flange is provided at one end of the first flange and / or the second flange near the side of the rear longitudinal beam facing the outside of the vehicle, and the third flange is attached to the side of the rear longitudinal beam facing the outside of the vehicle.

6. The vehicle rear body structure according to claim 1, characterized in that, The reinforcement includes a connecting portion located on the upper part of the rear longitudinal beam along the width direction of the vehicle, the connecting portion being fixedly connected to the side of the rear longitudinal beam facing the upper part of the vehicle.

7. The vehicle rear body structure according to claim 6, characterized in that, The connector includes an overlap portion disposed above the connecting portion. The overlap portion includes a first sub-overlap portion and a second sub-overlap portion. The first sub-overlap portion is attached to the connecting portion, and the second sub-overlap portion is attached to the side of the rear longitudinal beam facing the upper part of the vehicle.

8. The vehicle rear body structure according to any one of claims 1 to 7, characterized in that, The reinforcing member is a single, integral structure.

9. A vehicle, characterized in that, include: The vehicle body includes the rear body structure of the vehicle as claimed in any one of claims 1 to 8.

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