Vehicle rear structure and vehicle

Abstract

The utility model discloses a vehicle rear structure and a vehicle, the vehicle rear structure comprises: two longitudinal beams which are arranged at intervals in a left-right parallel manner, each longitudinal beam comprises a longitudinal beam body and a longitudinal beam rear section, the longitudinal beam rear section is connected to the rear end of the longitudinal beam body along the front-back direction; one end of the dragging assembly is fixedly connected with one longitudinal beam rear section, and the other end of the dragging assembly is fixedly connected with the other longitudinal beam rear section; the reinforcing component is arranged at the joint of the longitudinal beam body and the longitudinal beam rear section, and the two ends of the reinforcing component extend front and back in the front-back direction relative to the joint of the longitudinal beam body and the longitudinal beam rear section.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicles, in particular to a vehicle rear structure and a vehicle. Background Art

[0002] In existing technology, towing devices are typically mounted on the crossbeam of the vehicle's rear bumper. The load transfer path determines the stresses applied to each component, indicating that the crossbeam is the primary load-bearing member. Because the ends of the crossbeam connect to the rear section of the longitudinal beam, the structural load on this section is also significant. Existing structures struggle to meet the load requirements of towing devices, making them prone to structural deformation or damage, impacting the vehicle's towing performance. Utility Model Content

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention proposes a vehicle rear structure in which a reinforcement component is provided at the connection between the rear section of the longitudinal beam and the longitudinal beam body. When subjected to external loads, the force applied to the connection is directly transferred to the reinforcement component, thereby improving the overall drag strength of the vehicle frame.

[0004] The utility model further provides a vehicle.

[0005] According to the vehicle rear structure of the embodiment of the first aspect of the present utility model, it includes: two longitudinal beams, which are arranged in parallel and spaced apart on the left and right sides, each of the longitudinal beams includes a longitudinal beam body and a longitudinal beam rear section, and the longitudinal beam rear section is connected to the rear end of the longitudinal beam body in the front-to-rear direction; a towing assembly, one end of the towing assembly is fixedly connected to one of the longitudinal beam rear sections and the other end is fixedly connected to the other longitudinal beam rear section; a reinforcing component, the reinforcing component is arranged at the connection between the longitudinal beam body and the longitudinal beam rear section and its two ends extend forward and backward in the front-to-rear direction relative to the connection between the longitudinal beam body and the longitudinal beam rear section.

[0006] According to the vehicle rear structure of the embodiment of the present invention, the reinforcing component can improve the strength and bending stiffness of the connection. When the towing assembly is subjected to an external load, the external load is transmitted to the rear section of each longitudinal beam through the two ends of the towing assembly, so that the force at the connection is directly transferred to the reinforcing component, and then can continue to be transmitted to the longitudinal beam and the frame, thereby achieving effective dispersion of the towing force, improving the overall towing strength of the frame, and effectively reducing the risk of cracking or even breaking at the connection between the beam body and the rear section of the longitudinal beam during towing, thereby improving the towing performance of the vehicle.

[0007] According to some embodiments of the present invention, the reinforcing component includes a first reinforcing plate, which is arranged at a lower end of a connection between the longitudinal beam body and the longitudinal beam rear section in the up-down direction.

[0008] According to some embodiments of the present invention, the first reinforcing plate includes: a first side panel; a first bottom panel, both sides of which are respectively connected to the first side panels, the first bottom panel being connected to the lower surfaces of the longitudinal beam body and the rear section of the longitudinal beam, one first side panel being connected to the surfaces of the longitudinal beam body and the rear section of the longitudinal beam located on the inner side of the vehicle, and the other first side panel being connected to the surfaces of the longitudinal beam body and the rear section of the longitudinal beam located on the outer side of the vehicle.

[0009] According to some embodiments of the present invention, the first reinforcement is configured as an arched structure relative to the surface of the connection between the longitudinal beam body and the longitudinal beam rear section.

[0010] According to some embodiments of the present invention, the towing assembly is fixedly connected to the rear section of each longitudinal beam through multiple installation points at one end connected to the rear section of each longitudinal beam, and the rearmost end of the first reinforcing plate is arranged to overlap with one of the installation points located at the frontmost end in the front-to-back direction.

[0011] According to some embodiments of the present invention, the reinforcing component includes a second reinforcing plate, which is arranged on the inner surface of the connection between the longitudinal beam body and the longitudinal beam rear section and whose two ends extend forward and backward in the front-rear direction relative to the connection between the longitudinal beam body and the longitudinal beam rear section.

[0012] According to some embodiments of the present invention, it also includes: a rear cross beam, one end of which is connected to one of the longitudinal beam bodies and the other end is connected to the other longitudinal beam body, the rear cross beam and the towing assembly are spaced apart in the front-to-back direction, and the front end of the second reinforcing plate extends along the front-to-back direction to outside the overlapping boundary between the rear cross beam and the longitudinal beam body.

[0013] According to some embodiments of the present invention, the towing assembly includes: a towing beam, one end of the towing beam is fixedly connected to one of the rear sections of the longitudinal beam and the other end is fixedly connected to the rear section of another longitudinal beam, and the towing beam, the rear section of the longitudinal beam, the longitudinal beam body and the rear beam form a frame structure.

[0014] According to some embodiments of the present invention, the second reinforcing plate includes: a second side panel; a second bottom panel, both sides of which are connected to the second side panels respectively, the second bottom panel being connected to the inner surfaces of the longitudinal beam body and the rear section of the longitudinal beam located on the inner side of the vehicle, one second side panel being connected to the upper inner surfaces of the longitudinal beam body and the rear section of the longitudinal beam along the up-down direction, and the other second side panel being connected to the lower inner surfaces of the longitudinal beam body and the rear section of the longitudinal beam along the up-down direction.

[0015] The vehicle according to the second embodiment of the present utility model includes the vehicle rear structure.

[0016] Additional aspects and advantages of the present invention will be given in part in the following description and will become apparent from the following description or learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0018] Figure 1 This is a schematic structural diagram of a vehicle rear structure from a first perspective according to an embodiment of the present utility model;

[0019] Figure 2 is a structural schematic diagram of a vehicle rear structure from a second perspective according to an embodiment of the present utility model;

[0020] Figure 3 is a schematic structural diagram of a vehicle rear structure from a third perspective according to an embodiment of the present utility model;

[0021] Figure 4 is a partial enlarged view of the rear structure of a vehicle according to an embodiment of the present utility model;

[0022] Figure 5 This is a schematic diagram of the internal structure of the longitudinal beam body and the longitudinal beam rear section without the outer plate according to an embodiment of the present invention from a first perspective;

[0023] Figure 6 This is a schematic diagram of the internal structure from a second perspective of the longitudinal beam body and the longitudinal beam rear section without the outer plate according to an embodiment of the present invention.

[0024] Reference numerals:

[0025] 1. Longitudinal beam; 101. Longitudinal beam body; 102. Longitudinal beam rear section; 103. Connection; 2. Towing assembly; 201. Towing beam; 202. Connecting plate; 203. Mounting point; 3. Reinforcement component; 301. First reinforcement plate; 3011. First side plate; 3012. First bottom plate; 302. Second reinforcement plate; 3021. Second side plate; 3022. Second bottom plate; 4. Rear beam. DETAILED DESCRIPTION

[0026] The embodiments of the present invention are described in detail below. The embodiments described with reference to the accompanying drawings are exemplary. The embodiments of the present invention are described in detail below.

[0027] Reference below Figures 1-6 A vehicle rear structure according to an embodiment of the present invention is described.

[0028] In existing technology, towing devices are typically mounted on the crossbeam of the vehicle's rear bumper. The load transfer path determines the stresses applied to each component, indicating that the crossbeam is the primary load-bearing member. Because the ends of the crossbeam are directly connected to the rear section of the longitudinal beam, the structural load at the junction is significant. Existing structures struggle to meet the load requirements of towing devices, resulting in a high risk of structural deformation or damage, impacting the vehicle's towing performance.

[0029] Therefore, the present invention proposes a vehicle rear structure to solve the above technical problems.

[0030] like Figures 1-6 As shown, the vehicle rear structure includes: a longitudinal beam 1, a towing assembly 2 and a reinforcement component 3.

[0031] Two longitudinal beams 1 are arranged parallel to each other, each comprising a longitudinal beam body 101 and a longitudinal beam rear section 102, which is connected to the rear end of the longitudinal beam body 101 in the fore-aft direction. One end of the towing assembly 2 is fixedly connected to one longitudinal beam rear section 102, and the other end is fixedly connected to the other longitudinal beam rear section 102. A reinforcement member 3 is provided at the junction 103 between the longitudinal beam body 101 and the longitudinal beam rear section 102, with both ends of the reinforcement member 3 extending forward and backward relative to the junction 103 between the longitudinal beam body 101 and the longitudinal beam rear section 102.

[0032] In this way, the reinforcing component 3 is arranged in the weak area of the longitudinal beam 1, that is, the connection 103 between the longitudinal beam body 101 and the longitudinal beam rear section 102, which can improve the strength and bending stiffness of the weak area. When the towing assembly 2 is subjected to external force, the rear part of the longitudinal beam 1 has higher bending stiffness and can bear the external load exerted on the towing assembly 2.

[0033] Specifically, when the towing assembly 2 is subjected to an external load, the external load is transmitted to each longitudinal beam rear section 102 through the two ends of the towing assembly 2, so that the force at the connection 103 is directly transferred to the reinforcement component 3, and then can continue to be transmitted to the longitudinal beam 1 and the entire frame, thereby achieving effective dispersion of the towing force and effectively improving the overall towing strength of the frame, thereby effectively reducing the risk of cracking or even breaking at the connection 103 between the longitudinal beam body 101 and the longitudinal beam rear section 102 during the towing process.

[0034] Furthermore, both ends of the reinforcement member 3 extend forward and backward in the fore-aft direction relative to the connection 103 between the longitudinal beam body 101 and the longitudinal beam rear section 102. It is understood that the reinforcement member 3 can cover the fore-aft area bounded by the connection 103 between the longitudinal beam body 101 and the longitudinal beam rear section 102, so that the covered fore-aft area is substantially the same as the original weak area, thereby improving the strength of the weak area. The specific extent of the weak area can be determined by performing a force analysis on the connection 103 between the longitudinal beam body 101 and the longitudinal beam rear section 102.

[0035] Typically, the cross-sections of the longitudinal beam body 101 and the longitudinal beam rear section 102 are both U-shaped. This facilitates butt connection between the two, and, by leveraging the strength of the cavity, ensures sufficient strength and rigidity. Furthermore, the two can be connected by welding, thereby ensuring high bending rigidity for the vehicle frame. Furthermore, welding provides a secure connection and is less prone to loosening than other connection methods, such as riveting.

[0036] In this embodiment, the reinforcing component 3 can be arranged in any structural form at any position of the connection 103 between the longitudinal beam body 101 and the longitudinal beam rear section 102. In this regard, the present invention does not impose any specific restrictions, and only needs to improve the strength of the connection 103.

[0037] In addition, the reinforcement component 3 can also be applied to the relevant connection points at the front of the longitudinal beam 1 to improve the strength and rigidity.

[0038] According to the rear structure of the vehicle in the embodiment of the present invention, by providing a reinforcing component 3 at the connection 103 between the longitudinal beam body 101 and the longitudinal beam rear section 102, the strength and bending stiffness of the connection 103 can be improved. When the towing assembly 2 is subjected to an external load, the external load is transmitted to each longitudinal beam rear section 102 respectively through the two ends of the towing assembly 2, so that the force at the connection 103 is directly transferred to the reinforcing component 3, and then continues to be transmitted to the longitudinal beam 1 and the frame, thereby achieving effective dispersion of the drag force, improving the overall drag strength of the frame, and effectively reducing the risk of cracking or even breaking at the connection 103 between the longitudinal beam body 101 and the longitudinal beam rear section 102 during the towing process, thereby improving the towing performance of the vehicle.

[0039] See also Figure 1-Figure 4 As shown, according to an embodiment of the present invention, the reinforcing component 3 includes a first reinforcing plate 301 , which is arranged at the lower end of the connection 103 of the longitudinal beam body 101 and the longitudinal beam rear section 102 in the up-down direction.

[0040] In this way, by covering the lower end of the connection 103 between the longitudinal beam body 101 and the longitudinal beam rear section 102 with the first reinforcing plate 301, not only is the strength of the connection 103 between the longitudinal beam body 101 and the longitudinal beam rear section 102 increased, but the structural strength of the longitudinal beam body 101 and the longitudinal beam rear section 102 themselves is also improved. At the same time, this also avoids occupying the installation space where the longitudinal beam body 101 and the longitudinal beam rear section 102 are connected to the vehicle body, thus effectively utilizing the installation space. Furthermore, in this embodiment, the ends of the rear cross member 4 overlap the upper inner side surface of the longitudinal beam body 101 in the vertical direction. Covering the lower end of the connection 103 between the longitudinal beam body 101 and the longitudinal beam rear section 102 prevents interference between the first reinforcing plate 301 and the rear cross member 4.

[0041] According to some embodiments of the present invention, the first reinforcing plate 301 includes: a first side panel 3011 and a first bottom panel 3012, the two sides of the first bottom panel 3012 are respectively connected to the first side panels 3011, the first bottom panel 3012 is connected to the lower surfaces of the longitudinal beam body 101 and the longitudinal beam rear section 102, one first side panel 3011 is connected to the surfaces of the longitudinal beam body 101 and the longitudinal beam rear section 102 located on the inner side of the vehicle, and the other first side panel 3011 is connected to the surfaces of the longitudinal beam body 101 and the longitudinal beam rear section 102 located on the outer side of the vehicle.

[0042] That is, the first bottom plate 3012 and the first side plates 3011 on both sides thereof form a first reinforcing plate 301 in a "U-shaped structure", so that the first reinforcing plate 301 covers the lower end of the connection 103 between the longitudinal beam body 101 and the longitudinal beam rear section 102.

[0043] With such arrangement, in terms of structural strength, the first bottom plate 3012 and the two first side plates 3011 can respectively reinforce the thickness of the lower plate, inner plate and outer plate of the longitudinal beam body 101. Similarly, the thickness of the longitudinal beam rear section 102 is also reinforced, thereby improving the structural strength of the longitudinal beam body 101 and the longitudinal beam rear section 102 themselves. At the same time, the strength of the connection 103 between the longitudinal beam body 101 and the longitudinal beam rear section 102 can also be improved.

[0044] In terms of installation method, the first reinforcing plate 301 with a "U-shaped structure" is used. When installing, the frame is first turned upside down, and the first reinforcing plate 301 is directly covered on the connection area between the longitudinal beam body 101 and the longitudinal beam rear section 102. This not only improves the convenience of installation, but also ensures that the connection 103 between the first reinforcing plate 301 and the longitudinal beam body 101 and the longitudinal beam rear section 102 is firm and stable.

[0045] In this embodiment, considering that related components may be installed on the inner and outer sides of the longitudinal beam body 101 and the overlap method between the longitudinal beam body 101 and the rear cross beam 4, the first side plate 3011 does not cover the entire outer and inner sides of the longitudinal beam body 101 and the longitudinal beam rear section 102, and only ensures that the first reinforcing plate 301 can be firmly connected to the longitudinal beam body 101 and the longitudinal beam rear section 102.

[0046] Generally, the first reinforcing plate 301 can be connected to the longitudinal beam body 101 and the longitudinal beam rear section 102 by welding, thereby ensuring a firm connection, thereby ensuring the strength of the connection 103 between the longitudinal beam body 101 and the longitudinal beam rear section 102 .

[0047] In summary, the first reinforcing plate 301 of the "U-shaped structure" makes the connection 103 between the longitudinal beam body 101 and the longitudinal beam rear section 102 firm and stable, and at the same time can improve the strength and bending stiffness of the connection 103 and the structural strength of the longitudinal beam body 101 and the longitudinal beam rear section 102 themselves, so that when the towing assembly 2 is subjected to external loads, the force on the connection 103 is directly transferred to the reinforcing component 3, and then continued to be transmitted to the longitudinal beam 1 and the frame, thereby achieving effective dispersion of the towing force and improving the overall towing strength of the frame.

[0048] According to some embodiments of the present invention, the first reinforcing plate 301 is configured as an arched structure on a surface of a connection point 103 relative to the longitudinal beam body 101 and the longitudinal beam rear section 102 .

[0049] In other words, the first reinforcing plate 301 arches toward the ground to form an arched structure, creating a small cavity between the first reinforcing plate 301 and the surfaces of the longitudinal beam body 101 and the longitudinal beam rear section 102. Leveraging the high strength of the cavity structure, the strength of the connection 103 between the longitudinal beam body 101 and the longitudinal beam rear section 102 can be further improved. Furthermore, the overall cross-sectional areas of the longitudinal beam body 101 and the longitudinal beam rear section 102 can be increased to achieve a larger cavity for load bearing, thereby achieving more effective load transfer.

[0050] Taking into account the legal requirements for ground clearance of different vehicles, the first reinforcement plate 301 is raised to different degrees. Generally, while meeting the required ground clearance, the first reinforcement plate 301 can be raised to the maximum extent possible to achieve a larger cavity bearing force, thereby achieving better load transfer.

[0051] In one embodiment, the first reinforcing plate 301 arches downward to form a cavity with the surface of the longitudinal beam body 101. The cavity has a vertical cross-sectional dimension of 30 mm, and the vertical cross-sectional dimension of the longitudinal beam body 101 is 99 mm. Thus, the total vertical cross-sectional dimension of the longitudinal beam body 101 and the first reinforcing plate 301 is increased to 129 mm.

[0052] According to some embodiments of the present invention, the towing assembly 2 is fixedly connected to the rear section 102 of the longitudinal beam through multiple installation points 203 at one end connected to the rear section 102 of each longitudinal beam, and the rearmost end of the first reinforcing plate 301 is arranged to overlap with an installation point 203 located at the frontmost end in the front-to-back direction.

[0053] See also Figure 3 and Figure 4 As shown, each end of the towing assembly 2 is fixedly connected to the longitudinal beam rear section 102 via multiple mounting points 203 to ensure a secure connection between the towing assembly 2 and the longitudinal beam rear section 102. The rearmost end of the first reinforcing plate 301 extending in the fore-aft direction coincides with a mounting point 203 at the frontmost end in the fore-aft direction.

[0054] Applying the principle of leverage, with the forward-most mounting point 203 serving as the boundary (or fulcrum) to create a lever, the area covered by the first reinforcement plate 301 serves as the lever's force-bearing zone, placing the area forward of the forward-most mounting point 203 as the area subject to the greatest force. When the towing assembly 2 is subjected to an external load, the force applied to the connection 103 is directly transferred to the first reinforcement plate 301, which is then transferred to the longitudinal beam 1 and the vehicle frame. This effectively disperses the drag force and enhances the overall towing strength of the vehicle frame, thereby significantly reducing the risk of cracking or even breaking at the connection 103 between the longitudinal beam body 101 and the rear longitudinal beam section 102 during towing.

[0055] Based on the lever principle, the cross-section of the first reinforcing plate 301 is increased in the Z direction, so that the first reinforcing plate 301 can be arched toward the ground. Such a setting can enable the front area of the installation point 203 at the front end, which is the position of maximum force, to withstand a greater degree of external load, thereby better realizing load transfer.

[0056] Furthermore, by performing a force analysis on the connection 103 between the longitudinal beam body 101 and the longitudinal beam rear section 102, the specific extent of the weak area can be determined, thereby determining the position of the front end of the first reinforcing plate 301 in the front-to-back direction. In this embodiment, the front end of the first reinforcing plate 301 in the front-to-back direction extends beyond the overlap boundary between the longitudinal beam body 101 and the rear cross member 4.

[0057] See also Figure 5-Figure 6 As shown, according to another embodiment of the present invention, the reinforcing component 3 includes a second reinforcing plate 302, which is arranged on the inner surface of the connection 103 of the longitudinal beam body 101 and the longitudinal beam rear section 102, and its two ends extend forward and backward in the front-back direction relative to the connection 103 of the longitudinal beam body 101 and the longitudinal beam rear section 102.

[0058] In this way, by covering the interior of the connection 103 between the longitudinal beam body 101 and the longitudinal beam rear section 102 with the second reinforcing plate 302, not only the strength of the connection 103 between the longitudinal beam body 101 and the longitudinal beam rear section 102 is improved, but also the structural strength of the longitudinal beam body 101 and the longitudinal beam rear section 102 itself is improved. At the same time, it avoids occupying the external space of the longitudinal beam body 101 and the longitudinal beam rear section 102, and avoids interference with related external components, thus rationally utilizing the rear installation space of the vehicle.

[0059] In this embodiment, the thickness of the second reinforcing plate 302 is increased from 3 mm to 6 mm. The thickness of the longitudinal beam body 101 and the second reinforcing plate 302 are both 3 mm, so that the strength of the longitudinal beam body 101 is directly increased by the thickness of the material. The same applies to the longitudinal beam rear section 102.

[0060] According to some embodiments of the present invention, the rear structure of the vehicle also includes: a rear cross beam 4, one end of the rear cross beam 4 is connected to one of the longitudinal beam bodies 101, and the other end is connected to the other longitudinal beam body 101, the rear cross beam 4 and the towing assembly 2 are spaced apart in the front-to-rear direction, and the front end of the second reinforcing plate 302 extends along the front-to-rear direction to outside the overlapping boundary between the rear cross beam 4 and the longitudinal beam body 101.

[0061] In this arrangement, one end of the rear cross beam 4 is connected to one of the longitudinal beam bodies 101, and the other end is connected to the other longitudinal beam body 101, and one end of the towing assembly 2 is connected to one of the longitudinal beam rear sections 102, and the other end is connected to the other longitudinal beam rear section 102, so that the rear cross beam 4, the longitudinal beam body 101, the longitudinal beam rear section 102 and the towing assembly 2 form a closed structure, thereby improving the structural strength of the rear part of the vehicle, and when the towing assembly 2 is subjected to an external load, the closed structure forms a closed-loop force path, and the force path transmitted to the front end of the longitudinal beam body 101 through the second reinforcing plate 302 can effectively disperse the dragging force, thereby effectively avoiding local structural failure caused by single-point weakness.

[0062] Furthermore, the front end of the second reinforcing plate 302 extends in the front-to-back direction beyond the overlap boundary between the rear cross beam 4 and the longitudinal beam body 101. This arrangement enhances the strength of the overlap between the rear cross beam 4 and the longitudinal beam body 101, preventing failure at the overlap between the rear cross beam 4 and the longitudinal beam body 101 due to a step-change in strength between the rear portion and the front portion when subjected to force, thereby further improving the overall stability and force transferability of the closed structure.

[0063] Reference Figure 6The front end of the second reinforcing plate 302 extends forward in the front-to-back direction relative to the overlap between the rear crossbeam 4 and the longitudinal beam body 101 by a distance L, where L > 10 mm. This ensures the required strength at the overlap. In this embodiment, L is 60 mm. The rear end of the second reinforcing plate 302 can extend rearward in the front-to-back direction until it reaches a restricted position.

[0064] According to some embodiments of the present invention, the towing assembly 2 includes: a towing beam 201, one end of the towing beam 201 is fixedly connected to one of the longitudinal beam rear sections 102, and the other end is fixedly connected to the other longitudinal beam rear section 102, and the towing beam 201, the longitudinal beam rear section 102, the longitudinal beam body 101 and the rear beam 4 form a frame structure.

[0065] In this embodiment, one end of the dragging beam 201 is fixedly connected to the inner side surface of one of the longitudinal beam rear sections 102 through a connecting plate 202, and the other end is also fixedly connected to the inner side surface of the other longitudinal beam rear section 102 through a connecting plate 202, so that the dragging beam 201, the longitudinal beam rear section 102, the longitudinal beam body 101 and the rear beam 4 form a frame structure. The "frame structure" has the characteristics of structural stability and high strength, thereby effectively avoiding local failure caused by single point weakness during the towing of the entire vehicle.

[0066] According to some embodiments of the present invention, the second reinforcing plate 302 includes: a second side panel 3021 and a second bottom panel 3022, the two sides of the second bottom panel 3022 are respectively connected to the second side panels 3021, the second bottom panel 3022 is connected to the inner surfaces of the longitudinal beam body 101 and the longitudinal beam rear section 102 located on the inner side of the vehicle, one second side panel 3021 is connected to the upper inner surfaces of the longitudinal beam body 101 and the longitudinal beam rear section 102 along the up-down direction, and the other second side panel 3021 is connected to the lower inner surfaces of the longitudinal beam body 101 and the longitudinal beam rear section 102 along the up-down direction.

[0067] In this way, the second bottom plate 3022 and the second side plates 3021 on both sides thereof form a second reinforcing plate 302 in a "U-shaped structure", so that the second reinforcing plate 302 covers the inside of the connection 103 between the longitudinal beam body 101 and the longitudinal beam rear section 102.

[0068] In terms of structural strength, the second bottom plate 3022 and the two second side plates 3021 can respectively reinforce the inner plate, upper plate and lower plate of the longitudinal beam body 101. Similarly, the longitudinal beam rear section 102 is also reinforced with material thickness, thereby improving the structural strength of the longitudinal beam body 101 and the longitudinal beam rear section 102 themselves. At the same time, the strength of the connection 103 between the longitudinal beam body 101 and the longitudinal beam rear section 102 can also be improved.

[0069] In terms of installation method, the second reinforcing plate 302 with a "U-shaped structure" is directly attached to the inner plate surface of the connection area between the longitudinal beam body 101 and the longitudinal beam rear section 102 during installation, which improves the convenience of installation and can also ensure that the connection 103 between the second reinforcing plate 302 and the longitudinal beam body 101 and the longitudinal beam rear section 102 is firm and stable.

[0070] Generally, the second reinforcing plate 302 can be connected to the longitudinal beam body 101 and the longitudinal beam rear section 102 by welding, thereby ensuring a firm connection, thereby ensuring the strength of the connection 103 between the longitudinal beam body 101 and the longitudinal beam rear section 102 .

[0071] Therefore, through the second reinforcing plate 302 of the "U-shaped structure", the connection 103 between the longitudinal beam body 101 and the longitudinal beam rear section 102 is firmly and stably made, and at the same time, the strength and bending stiffness of the connection 103 and the structural strength of the longitudinal beam body 101 and the longitudinal beam rear section 102 themselves can be improved, so that when the towing assembly 2 is subjected to external load, the force at the connection 103 is directly transferred to the second reinforcing plate 302 and the first reinforcing plate 301, and then continued to be transmitted to the longitudinal beam 1 and the frame, thereby realizing the effective dispersion of the towing force and improving the overall towing strength of the frame.

[0072] A vehicle according to an embodiment of the second aspect of the present utility model includes a vehicle rear structure.

[0073] The cross-section of the weak areas of the longitudinal beam body 101 and the longitudinal beam rear section 102 is increased by the first reinforcing plate 301, and the structural force is achieved by increasing the cavity size, thereby avoiding failure of the connection position due to large impact; secondly, the second reinforcing plate 302 inside the longitudinal beam body 101 and the longitudinal beam rear section 102 is matched to directly strengthen the force-bearing position while further strengthening the overlap between the rear cross beam 4 and the longitudinal beam body 101. Therefore, during the towing process of the entire vehicle, the overlap between the rear cross beam 4 and the longitudinal beam body 101 at the front end and the installation position of the longitudinal beam rear section 102 presents a frame structure, thereby avoiding local failure caused by single-point weakness.

[0074] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation to the present invention.

[0075] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "illustrative embodiments," "example," "specific example," or "some examples" means that a specific feature, structure, material, or characteristic described in conjunction with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example.

[0076] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and purpose of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A vehicle rear structure, characterized in that: include: Two longitudinal beams are arranged in parallel and spaced apart from each other, each longitudinal beam comprising a longitudinal beam body and a longitudinal beam rear section, wherein the longitudinal beam rear section is connected to the rear end of the longitudinal beam body in the front-rear direction; a drag assembly, one end of the drag assembly being fixedly connected to the rear section of one of the longitudinal beams and the other end of the drag assembly being fixedly connected to the rear section of the other longitudinal beam; A reinforcing member is provided at a connection between the longitudinal beam body and the longitudinal beam rear section, and both ends of the reinforcing member extend forward and backward along a front-back direction relative to the connection between the longitudinal beam body and the longitudinal beam rear section.

2. The vehicle rear structure according to claim 1, wherein: The reinforcement component includes a first reinforcement plate, which is provided at a lower end of a connection between the longitudinal beam body and the longitudinal beam rear section in the up-down direction.

3. The vehicle rear structure according to claim 2, wherein: The first reinforcing plate comprises: first side panel; A first bottom plate, with both sides of which are connected to the first side plates respectively, the first bottom plate is connected to the lower surface of the longitudinal beam body and the rear section of the longitudinal beam, one first side plate is connected to the surface of the longitudinal beam body and the rear section of the longitudinal beam located on the inner side of the vehicle, and the other first side plate is connected to the surface of the longitudinal beam body and the rear section of the longitudinal beam located on the outer side of the vehicle.

4. The vehicle rear structure according to claim 2, wherein: The first reinforcing plate is configured as an arched structure on a surface of a connection between the longitudinal beam body and the longitudinal beam rear section.

5. The vehicle rear structure according to claim 2, wherein: The towing assembly is fixedly connected to the rear section of each longitudinal beam through multiple installation points at one end connected to the rear section of each longitudinal beam, and the rearmost end of the first reinforcing plate is arranged to overlap with one of the installation points located at the frontmost end in the front-to-back direction.

6. The vehicle rear structure according to claim 1, wherein: The reinforcement component includes a second reinforcement plate, which is arranged on the inner surface of the connection between the longitudinal beam body and the longitudinal beam rear section and has two ends extending forward and backward relative to the connection between the longitudinal beam body and the longitudinal beam rear section in the front-rear direction.

7. The vehicle rear structure according to claim 6, wherein: Also includes: A rear cross beam, one end of which is connected to one of the longitudinal beam bodies and the other end is connected to the other longitudinal beam body, the rear cross beam and the towing assembly are spaced apart in the front-to-rear direction, and the front end of the second reinforcing plate extends along the front-to-rear direction to outside the overlapping boundary between the rear cross beam and the longitudinal beam body.

8. The vehicle rear structure according to claim 7, wherein: The towing assembly includes: a towing beam, one end of which is fixedly connected to the rear section of one of the longitudinal beams and the other end is fixedly connected to the rear section of the other longitudinal beam, and the towing beam, the rear section of the longitudinal beam, the longitudinal beam body and the rear beam form a frame structure.

9. The vehicle rear structure according to claim 6, wherein: The second reinforcing plate includes: Second side panel; A second bottom plate, with the second side plates connected on both sides thereof, is connected to the inner surfaces of the longitudinal beam body and the rear section of the longitudinal beam on the inner side of the vehicle, one second side plate is connected to the upper inner surfaces of the longitudinal beam body and the rear section of the longitudinal beam in the up-down direction, and the other second side plate is connected to the lower inner surfaces of the longitudinal beam body and the rear section of the longitudinal beam in the up-down direction.

10. A vehicle, characterized in that: The vehicle rear structure comprises the vehicle rear structure according to any one of claims 1 to 9.

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