Vehicle body structure and vehicle

Abstract

The invention discloses a vehicle body structure and a vehicle. The vehicle body structure comprises a cross beam, a longitudinal beam and a first lap joint component, the longitudinal beam is in lap joint with the cross beam, the first lap joint component comprises a first main body part and a first lap joint edge connected with the first main body part, the first main body part at least partially wraps the bottom face of the cross beam, or the first lap joint component and the cross beam are integrally arranged, and the first lap joint edge is in lap joint with the first main body part in the vehicle height direction. The first lap joint edge and the bottom face of the longitudinal beam are arranged at intervals. According to the vehicle body structure, the first lap joint edge and the bottom face of the longitudinal beam are arranged at intervals in the vehicle height direction, the transmission path of water between the longitudinal beam and the cross beam is blocked, the problems of water accumulation, rusting, abnormal sound and the like in the cross beam are fundamentally prevented, meanwhile, water is prevented from entering a passenger compartment, dryness and comfort of the environment in a vehicle are guaranteed, and the service life of the vehicle body structure is prolonged. And the overall reliability and durability of the vehicle are improved.

Description

Technical Field

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

[0002] In related technologies, the crossbeams in the vehicle body structure are fixed on the longitudinal beams. When the vehicle encounters rainy weather, passes through flooded roads, or is washed, the longitudinal beams will inevitably come into contact with moisture. This moisture will enter the interior of the crossbeam through the connection between the longitudinal beam and the crossbeam, causing the crossbeam to rust and corrode, reducing the structural strength and durability of the crossbeam. Summary of the Invention

[0003] The present application aims to solve at least one of the above-mentioned technical problems in the prior art to a certain extent. To this end, the present application proposes a vehicle body structure that is conducive to preventing moisture from entering the cross beam from the longitudinal beam.

[0004] The present application also proposes a vehicle having the above-mentioned vehicle body structure.

[0005] According to an embodiment of the present application, the vehicle body structure includes a crossbeam, a longitudinal beam and a first overlapping component, the longitudinal beam is overlapped with the crossbeam, the first overlapping component includes a first main body and a first overlapping edge connected to the first main body, the first main body at least partially covers the bottom surface of the crossbeam, or the first overlapping component is integrally arranged with the crossbeam, wherein, along the vehicle height direction, the first overlapping edge is spaced apart from the bottom surface of the longitudinal beam.

[0006] According to the vehicle body structure of the embodiment of the present application, by setting the first overlapping edge and the bottom surface of the longitudinal beam at a distance in the vehicle height direction, the transmission path of moisture between the longitudinal beam and the cross beam is blocked, thereby preventing problems such as water accumulation, rust and abnormal noise inside the cross beam from the root, and at the same time preventing moisture from entering the passenger compartment, thereby ensuring the dryness and comfort of the vehicle interior environment and improving the overall reliability and durability of the vehicle.

[0007] According to some embodiments of the present application, the first main body portion includes a first plate portion and a second plate portion connected to each other, and the first overlapping edge is connected to the second plate portion, wherein the first plate portion covers the bottom surface of the beam and the second plate portion covers the side surface of the beam.

[0008] According to some embodiments of the present application, the longitudinal beam includes a longitudinal beam body and a longitudinal beam covering plate, the longitudinal beam covering plate is arranged above the longitudinal beam body, the first overlapping edge is overlapped and fixed with the longitudinal beam covering plate, and the first overlapping edge is spaced apart from the bottom surface of the longitudinal beam body.

[0009] According to some embodiments of the present application, a plug welding through hole is provided on the longitudinal beam sealing plate, and the plug welding through hole passes through to the first overlapping edge in the thickness direction of the longitudinal beam sealing plate.

[0010] According to some embodiments of the present application, the vehicle body structure also includes a rocker inner panel connecting plate, which is suitable for connecting with the longitudinal beam body and the longitudinal beam covering plate. The first overlapping component also includes a second overlapping edge, which is connected to the first main body, and the second overlapping edge is overlapped and fixed to the rocker inner panel connecting plate.

[0011] According to some embodiments of the present application, a sealing structure is provided at the overlap between the second overlapping edge and the rocker inner panel connecting plate.

[0012] According to some embodiments of the present application, the first main body portion also includes a third plate portion, which connects the first plate portion and the second plate portion respectively, and the third plate portion and the door sill inner panel connecting plate are arranged opposite to each other along the vehicle width direction, and the third plate portion is connected to the second overlapping edge.

[0013] According to some embodiments of the present application, the first overlapping component further includes a third overlapping edge, the third overlapping edge is connected to the first plate portion, and the third overlapping edge is overlapped and fixed to the longitudinal beam body.

[0014] According to some embodiments of the present application, a sealing structure is provided at the overlap between the first overlapping edge and the longitudinal beam cover plate; and / or a sealing structure is provided at the overlap between the third overlapping edge and the longitudinal beam body.

[0015] According to some embodiments of the present application, a sinking structure is further provided on the first plate portion, the sinking structure is recessed toward the longitudinal beam body, and the sinking structure is welded and fixed to the longitudinal beam body.

[0016] According to some embodiments of the present application, the first plate portion is arranged to be inclined relative to a horizontal plane.

[0017] According to some embodiments of the present application, the vehicle body structure further includes a second overlapping component, which is disposed above the first overlapping component and connected to the first overlapping component.

[0018] According to some embodiments of the present application, in the vehicle length direction, the first overlapping part is provided with a third overlapping edge opposite to the first overlapping edge; one end of the second overlapping part is overlapped and fixed with the first overlapping edge, and the other end of the second overlapping part is overlapped and fixed with the third overlapping edge, and a first accommodating cavity is enclosed between the second overlapping part and the first overlapping part.

[0019] According to some embodiments of the present application, an end portion of the crossbeam extends into the first accommodating cavity, and the first main body at least partially covers a bottom surface of the crossbeam.

[0020] According to some embodiments of the present application, the second overlapping component includes a second main body, a fourth overlapping edge and a fifth overlapping edge, the fourth overlapping edge is connected to the second main body, the fourth overlapping edge is overlapped and fixed with the third overlapping edge, the fifth overlapping edge is connected to the second main body, and the fifth overlapping edge is overlapped and fixed with the first overlapping edge.

[0021] According to some embodiments of the present application, the vehicle body structure also includes a rocker inner panel connecting plate, the first overlapping component also includes a second overlapping edge, the second overlapping edge is connected to the first main body, and the second overlapping edge is overlapped and fixed to the rocker inner panel connecting plate; the second main body also includes a sixth overlapping edge, and the sixth overlapping edge is overlapped and fixed to the rocker inner panel connecting plate through the second overlapping edge.

[0022] According to some embodiments of the present application, a sealing structure is provided at the overlap between the sixth overlapping edge and the second overlapping edge.

[0023] According to some embodiments of the present application, a sealing structure is provided at the overlap of the fifth overlap edge and the first overlap edge; and / or a sealing structure is provided at the overlap of the fourth overlap edge and the third overlap edge.

[0024] According to some embodiments of the present application, in the vehicle width direction, one end of the first main body portion close to the passenger compartment is overlapped and fixed to the crossbeam, and one end of the second main body portion close to the passenger compartment is overlapped and fixed to the crossbeam.

[0025] According to some embodiments of the present application, the overlap between the first main body portion and the crossbeam is at least partially separated to form a first plug weld notch; and / or the overlap between the second main body portion and the crossbeam is at least partially separated to form a second plug weld notch.

[0026] According to some embodiments of the present application, the first overlapping component is integrally provided with the crossbeam, and the second overlapping component is integrally provided with the crossbeam.

[0027] According to some embodiments of the present application, the vehicle body structure further includes a sealing plate, which is partially located below the longitudinal beam body and is overlapped and fixed to the longitudinal beam body.

[0028] According to some embodiments of the present application, a longitudinal beam leakage hole is provided on the longitudinal beam body, a sealing plate leakage hole is provided on the sealing plate, and the sealing plate leakage hole is communicated with the longitudinal beam leakage hole.

[0029] The vehicle according to an embodiment of the present application includes the above-mentioned vehicle body structure.

[0030] According to the vehicle of the embodiment of the present application, its body structure blocks the transmission path of moisture between the longitudinal beam and the cross beam by setting the first overlapping edge and the bottom surface of the longitudinal beam in the vehicle height direction, thereby preventing problems such as water accumulation, rust and abnormal noise inside the cross beam from the root, and at the same time preventing moisture from entering the passenger compartment, ensuring the dryness and comfort of the vehicle interior environment, and improving the overall reliability and durability of the vehicle.

[0031] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become obvious from the description below, or will be learned through practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 is a perspective schematic diagram of a vehicle body structure according to a first embodiment of the present application;

[0033] Figure 2 is a perspective schematic diagram of a vehicle body structure hiding a second overlapping component according to the first embodiment of the present application;

[0034] Figure 3 is a three-dimensional schematic diagram of a first overlapping component according to a first embodiment of the present application;

[0035] Figure 4 is a perspective schematic diagram of a second overlapping component according to the first embodiment of the present application;

[0036] Figure 5 is a perspective schematic diagram of a vehicle body structure according to a second embodiment of the present application;

[0037] Figure 6 is a perspective schematic diagram of a vehicle body structure hiding a second overlapping component according to a second embodiment of the present application;

[0038] Figure 7 is a perspective schematic diagram of a first overlapping component according to a second embodiment of the present application;

[0039] Figure 8 is a perspective schematic diagram of a second overlapping component according to a second embodiment of the present application;

[0040] Figure 9 is a schematic diagram of a vehicle body structure according to an embodiment of the present application;

[0041] Figure 10 is a schematic diagram of a vehicle according to an embodiment of the present application.

[0042] Reference numerals:

[0043] Vehicle 100, vehicle body structure 10, longitudinal beam 1, longitudinal beam body 11, longitudinal beam leakage hole 111, longitudinal beam sealing plate 12, plug welding through hole 121, first lap component 21, first main body 211, sinking structure 2111, first plate portion 2112, second plate portion 2113, third plate portion 2114, third lap edge 212, first lap edge 213, second lap edge 214, second lap component 22, second main body 221, fourth lap edge 222, fifth lap edge 223, sixth lap edge 224, cross beam 23, sealing structure 3, first plug welding notch 41, second plug welding notch 42, third plug welding notch 43, sill inner panel connecting plate 5, center floor 6, reinforcement structure, sealing plate 7, sealing plate leakage hole 71. DETAILED DESCRIPTION

[0044] The following describes in detail embodiments of the present application, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present application, and should not be construed as limiting the present application.

[0045] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of the technical features indicated. Therefore, a feature specified as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, "plurality" means at least two, for example, two, three, etc., unless otherwise specifically defined.

[0046] The following combination Figures 1-10 A vehicle body structure 10 and a vehicle 100 having the vehicle body structure 10 according to an embodiment of the present application will be described in detail.

[0047] See Figures 1-9 As shown, the vehicle body structure 10 according to the embodiment of the present application includes a crossbeam 23, a longitudinal beam 1 and a first overlapping component 21. The longitudinal beam 1 overlaps the crossbeam 23. The first overlapping component 21 includes a first main body portion 211 and a first overlapping edge 213 connected to the first main body portion 211. The first main body portion 211 at least partially covers the bottom surface of the crossbeam 23, or the first overlapping component 21 is integrally arranged with the crossbeam 23, wherein, along the vehicle height direction, the first overlapping edge 213 is spaced apart from the bottom surface of the longitudinal beam 1.

[0048] Specifically, by spacing the first overlapping edge 213 from the bottom surface of the longitudinal beam 1 in the vehicle height direction, the first main body 211 forms a barrier between the crossbeam 23 and the longitudinal beam 1, blocking the transmission path of moisture between the longitudinal beam 1 and the crossbeam 23, and can effectively prevent moisture from invading from the bottom surface of the crossbeam 23, significantly improving the waterproof sealing of the crossbeam 23, avoiding rust and corrosion of the crossbeam due to moisture entry, and the resulting abnormal noise, extending the service life of the crossbeam 23, and at the same time avoiding moisture from entering the passenger compartment, ensuring the dryness and comfort of the vehicle interior environment, and improving the overall reliability and durability of the vehicle 100.

[0049] In some embodiments, see Figures 1-4 As shown, the first main body 211 at least partially covers the bottom surface of the crossbeam 23. Thus, the covering of the bottom surface of the crossbeam 23 by the first main body 211 provides more effective support and restraint for the crossbeam 23 when subjected to forces from various directions during the driving of the vehicle 100, dispersing stress concentration and thereby enhancing the structural strength and stability of the crossbeam 23, ensuring that it can better bear the vehicle body load, maintaining the integrity and rigidity of the vehicle body structure 10, and providing a solid foundation for the safe driving of the vehicle 100. Furthermore, the first main body 211 can seal the bottom surface of the crossbeam 23, preventing moisture from entering the interior of the crossbeam 23 through the bottom surface.

[0050] In some embodiments, see Figure 5-Figure 8 As shown, the first lap joint 21 is integrally provided with the cross beam 23. In other words, the cross beam 23 is formed as a part of the first lap joint 21, thereby eliminating the connection gap and potential loosening risk between the first lap joint 21 and the cross beam 23, making the two a continuous and stable integral structure. During the driving process of the vehicle 100, whether it is subjected to longitudinal acceleration and braking force, lateral turning centrifugal force, or vertical road bump impact force, it can distribute and transmit stress more evenly, avoiding structural deformation or damage caused by the weakness of the connection between the first lap joint 21 and the cross beam 23, significantly enhancing the load-bearing capacity and stability of the vehicle body structure 10 under complex working conditions, and providing more reliable protection for the safe driving of the vehicle 100.

[0051] Optionally, the overlapping fixing method between the two components involved in this application can be welding, or welding first and then adding a sealing structure. The welding method can be double-sealed welding, arc welding, resistance welding, brazing, laser welding, etc. The following embodiments will not give examples one by one.

[0052] In some embodiments, the cross beam 23 is a thermoformed part. When the body structure 10 is applied to the vehicle 100, the cross beam 23 is extended along the width direction of the vehicle 100. Thus, the cross beam 23 can provide left and right support for the body structure 10, thereby improving the ability of the body structure 10 to withstand impact. During a collision of the vehicle 100, the cross beam 23 can protect the safety of the passenger compartment.

[0053] It should be noted that the vehicle width direction of this application is as follows Figure 1 The y-axis direction is shown.

[0054] In some embodiments, the vehicle body structure 10 may be applied to a vehicle 100 . In the following embodiments, the vehicle body structure 10 applied to the vehicle 100 is used as an example for description.

[0055] Optionally, the cross beam 23 can be a rolled part or a stamped part. The longitudinal beam 1 can be a rolled part or a stamped part.

[0056] It should be noted that the vehicle height direction in this application is Figure 1 The z-axis direction.

[0057] In related technologies, the crossbeams in the vehicle body structure are fixed to the longitudinal beams via an inverted "U"-shaped structure. When the vehicle encounters rainy weather, passes through flooded roads, or is washed, the longitudinal beams will inevitably come into contact with moisture. This moisture will enter the interior of the crossbeams through the connection points between the longitudinal beams and the crossbeams, causing the crossbeams to rust and corrode, reducing the structural strength and durability of the crossbeams. At the same time, rusted crossbeams are prone to producing abnormal noises during vehicle operation due to structural changes and friction, affecting the comfort and safety of the vehicle. Moreover, the infiltrated moisture may also enter the passenger compartment through the connection gaps between the crossbeams and other components, causing problems such as moisture and mold in the passenger compartment, seriously affecting the interior environment and the passenger experience.

[0058] According to the vehicle body structure 10 of the embodiment of the present application, by setting the first overlapping edge 213 in the vehicle height direction and the bottom surface of the longitudinal beam 1 at a distance, the transmission path of moisture between the longitudinal beam 1 and the cross beam 23 is blocked, thereby preventing problems such as water accumulation, rust and abnormal noise inside the cross beam 23 from the root, and at the same time preventing moisture from entering the passenger compartment, thereby ensuring the dryness and comfort of the vehicle interior environment and improving the overall reliability and durability of the vehicle 100.

[0059] In the examples of this application, see Figure 2 、 Figure 3 、 Figure 6 、 Figure 7As shown, the first main body portion 211 includes a first plate portion 2112 and a second plate portion 2113 connected to each other. The first overlapping edge 213 is connected to the second plate portion 2113. The first plate portion 2112 covers the bottom surface of the crossbeam 23, and the second plate portion 2113 covers the side surface of the crossbeam 23. Specifically, the first plate portion 2112 covers the bottom surface of the crossbeam 23, effectively blocking moisture, dust, and debris from below the crossbeam 23, preventing them from corroding the crossbeam 23. This reduces the risk of the crossbeam 23 being damaged by moisture, rust, or impact from foreign objects, thereby ensuring the structural integrity and stability of the crossbeam 23. The second plate portion 2112 covers the side surface of the crossbeam 23, providing an additional layer of protection for the side surface of the crossbeam 23, protecting it from scratches, collisions, and moisture intrusion through side gaps. This further enhances the sealing and durability of the crossbeam 23, providing more comprehensive protection for the crossbeam 23 in the complex operating environment of the vehicle 100.

[0060] In the examples of this application, see Figure 1 、 Figure 2 、 Figure 5 、 Figure 6 、 Figure 9 As shown, the longitudinal beam 1 includes a longitudinal beam body 11 and a longitudinal beam cover 12. The longitudinal beam cover 12 is arranged above the longitudinal beam body 11. The first overlapping edge 213 is overlapped and fixed with the longitudinal beam cover 12. The first overlapping edge 213 is spaced apart from the bottom surface of the longitudinal beam body 11. Figure 1 、 Figure 5 、 Figure 6 It is blocked by the longitudinal beam cover plate 12 and is not displayed. Specifically, the longitudinal beam cover plate 12 is located above the longitudinal beam body 11, which can effectively increase the section modulus of the longitudinal beam 1. When the body structure 10 is applied to the vehicle 100, when the vehicle 100 is under load, the longitudinal beam 1 needs to have sufficient strength to resist bending and twisting deformation. The longitudinal beam cover plate 12 can effectively enhance the structural strength of the longitudinal beam 1, so that the longitudinal beam 1 can withstand greater force, thereby enhancing the bearing capacity of the body structure 10. At the same time, the first lap edge 213 is overlapped and fixed with the longitudinal beam cover plate 12, and the overlap area is large. Such a structural design enables the first lap component 21 to establish a stable connection with the longitudinal beam cover plate 12. If the vehicle body structure 10 is applied to the vehicle 100, during the driving process of the vehicle 100, no matter it is subjected to various complex external forces such as longitudinal acceleration and braking force, lateral turning centrifugal force, or vertical road bump impact force, the first overlapping edge 213 can effectively disperse and transmit the force, thereby preventing the first overlapping component 21 from loosening or detaching due to concentrated force, thereby ensuring the firmness of the connection between the first overlapping component 21 and the longitudinal beam 1, and further enhancing the stability of the overall structure of the cross beam 23 and the longitudinal beam 1, providing reliable support for the vehicle body structure 10 and even the entire vehicle 100.

[0061] In some embodiments of the present application, see Figure 2 、 Figure 6 As shown, a sealing structure 3 is provided at the overlap between the first overlap component 21 and the longitudinal beam cover plate 12 .

[0062] In some embodiments, the first overlapping member 21 is overlapped and fixed with the longitudinal beam body 11 , and a sealing structure 3 is provided at the overlapped portion.

[0063] In other words, at least one set of overlapping portions among the overlapping portions between the first overlapping member 21 and the longitudinal beam body 11 and the overlapping portions between the first overlapping member 21 and the longitudinal beam cover plate 12 is provided with a sealing structure 3 .

[0064] In some embodiments, a sealing structure 3 is provided at the overlap of the first overlapping member 21 and the longitudinal beam body 11, and a sealing structure 3 is provided at the overlap of the first overlapping member 21 and the longitudinal beam cover plate 12. Specifically, after the sealing structure 3 is provided at the overlap of the first overlapping member 21 and the longitudinal beam body 11, and at the overlap of the first overlapping member 21 and the longitudinal beam cover plate 12, a continuous and tight waterproof barrier can be formed at these key connection points. No matter from which direction moisture contacts the crossbeam 23, it is difficult to penetrate into the interior of the crossbeam 23 through these overlaps, effectively preventing moisture from entering the crossbeam 23, protecting the crossbeam 23 from corrosion, and extending the service life of the crossbeam 23. At the same time, it also avoids problems such as moisture accumulation causing dampness and mold in the vehicle that affect the environment in the passenger compartment.

[0065] In the examples of this application, see Figure 1 、 Figure 2 、 Figure 5 、 Figure 6 As shown, a plug welding through hole 121 is provided on the longitudinal beam cover plate 12, and in the thickness direction of the longitudinal beam cover plate 12, the plug welding through hole 121 passes through to the first lap edge 213. Specifically, the plug welding through hole 121 forms a compact welding structure between the longitudinal beam cover plate 12 and the first lap part 21. The existence of the plug welding through hole 121 provides extremely convenient conditions for the welding process. According to the parameters of the plug welding through hole 121 (such as size, shape, etc.), the filling amount of solder and the depth of welding are accurately controlled to avoid problems such as too much or too little solder, too deep or too shallow welding, etc., effectively reducing the potential failure risks such as loose connection and cracks caused by poor welding quality, and improving the stability of the welding between the longitudinal beam cover plate 12 and the first lap part 21.

[0066] Optionally, the number of the plug welding through holes 121 may be one, two, three or more, for example Figure 1 、 Figure 5 、 Figure 9 As shown, there are two plug welding through holes 121 .

[0067] In the examples of this application, see Figure 1-Figure 3 、 Figure 6 、 Figure 7 As shown, the vehicle body structure 10 also includes a sill inner panel connecting plate 5, which is suitable for connecting with the longitudinal beam body 11 and the longitudinal beam cover plate 12. The first overlapping component 21 also includes a second overlapping edge 214, which is connected to the first main body 211, and the second overlapping edge 214 is overlapped and fixed to the sill inner panel connecting plate 5. Specifically, the second overlapping edge 214 is located at the outer end of the first main body 211 (i.e., the end away from the passenger compartment), and the second overlapping edge 214 is overlapped and fixed to the sill inner panel connecting plate 5. The overlapping area is large, so that the first overlapping component 21 and the sill inner panel connecting plate 5 are tightly fixed together, so that the cross beam 23, the longitudinal beam 1 and the sill inner panel connecting plate 5 are tightly connected together through mutual overlap and fixation, thereby building a more complex and stable connection network. If the vehicle body structure 10 is applied to the vehicle 100, when the vehicle 100 is subjected to various When the vehicle is loaded (such as the weight of the vehicle body, the weight of passengers and cargo, impact force during driving, etc.), the force can be more effectively transmitted and dispersed between the crossbeam 23, the longitudinal beam 1 and the rocker inner panel connecting plate 5 through multiple connection points, avoiding stress concentration in local areas (such as the crossbeam 23, the longitudinal beam 1, the rocker inner panel connecting plate 5, etc.), significantly enhancing the overall structural stability of the vehicle body structure 10, and ensuring that the vehicle body structure 10 can reliably play a supporting role under different working conditions (such as acceleration, braking, turning, passing bumpy roads, etc.).

[0068] In some embodiments, the rocker inner panel connecting plate 5 is adapted to be directly or indirectly connected to the rocker beam.

[0069] In the examples of this application, see Figure 1 、 Figure 2 、 Figure 5 、 Figure 6 As shown, a sealing structure 3 is provided at the joint between the second overlapping edge 214 and the rocker inner panel connecting plate 5. Specifically, the sealing structure 3 prevents moisture from flowing into the crossbeam 23 from the joint between the first overlapping member 21 and the rocker inner panel connecting plate 5, thereby maintaining dryness within the crossbeam 23 and protecting components within the vehicle body structure 10 from moisture erosion. This effectively prevents problems such as rust and corrosion, thereby extending the service life of the vehicle body structure 10.

[0070] In the examples of this application, see Figure 2 、 Figure 3 、 Figure 6 、 Figure 7As shown, the first main body 211 also includes a third plate portion 2114, which connects the first plate portion 2112 and the second plate portion 2113 respectively. The third plate portion 2114 is arranged opposite to the door sill inner panel connecting plate 5 along the vehicle width direction, and the third plate portion 2114 is connected to the second overlapping edge 214. Specifically, the third plate portion 2114 connects the first plate portion 2112 and the second plate portion 2113, so that the first main body 211 forms a more stable overall frame structure. During the driving process of the vehicle 100, when subjected to forces from different directions, such as longitudinal acceleration and braking force, lateral turning centrifugal force, and vertical road bump impact force, this overall frame can more effectively disperse and transmit stress, avoiding stress concentration in local areas that may cause structural damage, thereby enhancing the structural strength and stability of the first overlapping component 21 itself, and further improving the reliability of the connection structure between the crossbeam 23 and the longitudinal beam 1, providing more solid support for the vehicle body structure 10 and ensuring safe driving of the vehicle. The third plate portion 2114 may also cover the end of the beam 23 to block the transmission of moisture to the beam 23 .

[0071] In the examples of this application, see Figure 1 、 Figure 2 、 Figure 5 、 Figure 6 As shown, the first lap joint 21 also includes a third lap edge 212, which is connected to the first plate portion 2112 and is overlapped and fixed to the longitudinal beam body 11. Specifically, the third lap edge 212 is overlapped and fixed to the longitudinal beam body 11, and the overlap area is large, further strengthening the stable connection between the first lap joint 21 and the longitudinal beam body 11. If the vehicle body structure 10 is applied to the vehicle 100, during the driving process of the vehicle 100, whether it is subjected to various complex external forces such as longitudinal acceleration and braking force, lateral turning centrifugal force, or vertical road bump impact force, the third lap edge 212 can effectively disperse and transmit force, preventing the first lap joint 21 from loosening or detaching due to concentrated force, thereby ensuring the firmness of the connection between the first lap joint 21 and the longitudinal beam 1, thereby enhancing the stability of the overall structure of the cross beam 23 and the longitudinal beam 1, and providing reliable support for the vehicle body structure 10 and even the entire vehicle 100.

[0072] In some embodiments of the present application, see Figure 2 、 Figure 3 、 Figure 6 、 Figure 7 、 Figure 9As shown, a sealing structure 3 is provided at the overlap between the third overlapping edge 212 and the longitudinal beam body 11, and a sealing structure 3 is provided at the overlap between the first overlapping edge 213 and the longitudinal beam cover plate 12. Specifically, the sealing structure 3 ensures that the overlap between the third overlapping edge 212 and the longitudinal beam body 11, and the overlap between the first overlapping edge 213 and the longitudinal beam cover plate 12, always remain dry and sealed, preventing moisture in the longitudinal beam 1 from entering the crossbeam 23 through the overlap between the first overlapping component 21 and the longitudinal beam 1. This helps maintain the dryness of the vehicle body structure 10, reduces the occurrence of faults such as short circuits and corrosion caused by moisture, and improves the reliability and stability of the vehicle body structure 10. At the same time, when the vehicle body structure 10 is applied to the vehicle 100, moisture cannot enter the crossbeam 23, and it can also be ensured that moisture does not enter the passenger compartment from the crossbeam 23, ensuring the dryness of the passenger compartment and thereby ensuring the comfort and overall performance of the vehicle 100.

[0073] In some embodiments not shown in the figures, a sealing structure 3 is provided at the overlap of the third overlap edge 212 and the longitudinal beam body 11, and the overlap of the first overlap edge 213 and the longitudinal beam sealing plate 12 is sealed by welding.

[0074] In some embodiments not shown in the figures, a sealing structure 3 is provided at the overlap of the first overlap edge 213 and the longitudinal beam cover plate 12, and the overlap of the third overlap edge 212 and the longitudinal beam body 11 is sealed by welding.

[0075] In the examples of this application, see Figure 2 、 Figure 3 、 Figure 6 、 Figure 7 、 Figure 9 As shown, a sinking platform structure 2111 is further provided on the first plate portion 2112, and the sinking platform structure 2111 is recessed toward the longitudinal beam body 11, and the sinking platform structure 2111 is welded and fixed to the longitudinal beam body 11. Specifically, by welding and fixing the sinking platform structure 2111 to the longitudinal beam body 11, the contact area of the welding is increased. Compared with plane welding, the sinking platform structure 2111 recessed toward the longitudinal beam body 11 can make the solder form a thicker and more stable weld in the sinking platform. If the vehicle body structure 10 is applied to the vehicle 100, when the vehicle 100 is subjected to various loads (such as the weight of the vehicle body, the weight of passengers and cargo, the impact force during driving, etc.), the larger welding contact area and the thicker and more stable weld can better withstand and transmit various loads, effectively prevent the occurrence of cracks, falling off and other problems in the welding parts, improve the strength and stability of the connection between the first main body 211 and the longitudinal beam body 11, and thus enhance the reliability of the entire chassis structure.

[0076] In the examples of this application, see Figure 2 、 Figure 3 、 Figure 6 、 Figure 7 、 Figure 9 As shown, the first plate portion 2112 is tilted relative to the horizontal plane. Specifically, the first lap joint 21 needs to undergo electrophoretic coating. During the electrophoretic process, if there is gas accumulation in the first lap joint 21, the gas accumulation will hinder the normal adhesion of the electrophoretic paint, resulting in uneven coating thickness, local thin coating or even missing coating. The tilted setting of the first plate portion 2112 can effectively avoid gas accumulation in the first lap joint 21 during the electrophoretic process, so that the electrophoretic paint can be evenly covered on each surface of the first lap joint 21, forming an electrophoretic coating with consistent thickness and reliable quality. Not only does the first main body 211 have a more beautiful appearance, but it can also provide comprehensive and stable protection for the first lap joint 21, effectively resisting the invasion of external environmental factors (such as corrosion, wear, etc.), and extending the service life of the first lap joint 21.

[0077] In the examples of this application, see Figures 1-9 As shown, the vehicle body structure 10 further includes a second overlapping member 22, which is disposed above the first overlapping member 21 and connected to the first overlapping member 21. Specifically, by overlapping and fixing the first overlapping member 21 to the longitudinal beam body 11, overlapping and fixing the first overlapping member 21 to the longitudinal beam cover plate 12, and overlapping and fixing the second overlapping member 22 to the first overlapping member 21, a multi-layered and interconnected structure is formed, so that the cross beam 23 is firmly connected to the longitudinal beam 1. When the cross beam 23 bears a load, the force can be more evenly distributed, thereby enhancing the structural strength of the cross beam 23 itself and thereby improving the structural stability of the vehicle body structure 10.

[0078] In some embodiments, the second plate portion 2113 is folded upward relative to the first plate portion 2112 to prevent moisture from entering the beam 23 .

[0079] In some embodiments, the first plate portion 2112 and the third overlapping edge 212 form a stepped structure in the vehicle body length direction and / or vehicle body width direction. Because the first plate portion 2112 is welded to the longitudinal beam body 11 via the sunken structure 2111, and the third overlapping edge 212 is overlapped and fixed to the longitudinal beam body 11, the longitudinal beam body 11 also has a stepped structure. Thus, the stepped structure on the longitudinal beam body 11 provides a platform for the first overlapping member 21 and the second overlapping member 22 to overlap, providing a foothold for the subsequent sealing structure 3.

[0080] In some embodiments, a sealing structure 3 is provided at the joint between the second overlapping member 22 and the first overlapping member 21. Specifically, the provision of the sealing structure 3 at the joint between the second overlapping member 22 and the first overlapping member 21 forms a continuous and tight waterproof barrier at these critical connection points. Regardless of the direction from which moisture contacts the crossbeam 23, it is difficult for moisture to penetrate into the interior of the crossbeam 23 through these joints. This effectively prevents moisture from entering the crossbeam 23, protects the crossbeam 23 from corrosion, and extends the service life of the crossbeam 23. It also prevents moisture accumulation from causing dampness, mold, and other environmental issues within the passenger compartment.

[0081] In the examples of this application, see Figures 1-8 、 Figure 9 As shown, in the vehicle length direction, the first overlapping part 21 is provided with a third overlapping edge 212 opposite to the first overlapping edge 213, one end of the second overlapping part 22 is overlapped and fixed with the first overlapping edge 213, and the other end of the second overlapping part 22 is overlapped and fixed with the third overlapping edge 212, and a first accommodating cavity is enclosed between the second overlapping part 22 and the first overlapping part 21. Specifically, the second overlapping part 22 and the first overlapping part 21 are overlapped and fixed at multiple points to form a stable structure that supports and constrains each other. During the driving process of the vehicle 100, when subjected to various complex external forces, such as acceleration, braking, turning and impact forces generated by road bumps, this stable connection structure can effectively disperse and transmit stress, avoid stress concentration at the connection between the crossbeam 23 and the longitudinal beam 1, thereby greatly enhancing the reliability and stability of the connection between the crossbeam 23 and the longitudinal beam 1, reducing the risk of structural damage caused by loose connection, ensuring the integrity of the vehicle body structure 10, and providing a solid foundation for the safe driving of the vehicle 100.

[0082] In the examples of this application, see Figure 1 、 Figure 2 As shown, the end of the crossbeam 23 extends into the first accommodating cavity, and the first main body 211 at least partially covers the bottom surface of the crossbeam 23. Specifically, the end of the crossbeam 23 extends into the first accommodating cavity, so that the crossbeam 23 is better constrained and supported at the key part connected to the longitudinal beam 1. When the vehicle 100 is subjected to various forces during driving, especially forces in the longitudinal and lateral directions, such as the inertial force generated during acceleration, braking and turning, the first accommodating cavity can limit the displacement and shaking of the end of the crossbeam 23, preventing it from excessive swinging or deformation due to the force, thereby enhancing the overall stability and reliability of the crossbeam 23, providing more stable support for the vehicle body structure 10, and ensuring the safe driving of the vehicle 100.

[0083] In the examples of this application, see Figure 1 、 Figure 4 、 Figure 5 、 Figure 8 、 Figure 9 As shown, the second overlapping member 22 includes a second main body portion 221, a fourth overlapping edge 222, and a fifth overlapping edge 223. The fourth overlapping edge 222 is connected to the second main body portion 221, and the fourth overlapping edge 222 is overlapped and fixed to the third overlapping edge 212. The fifth overlapping edge 223 is connected to the second main body portion 221, and the fifth overlapping edge 223 is overlapped and fixed to the first overlapping edge 213. Specifically, the fourth overlapping edge 222 is overlapped and fixed to the third overlapping edge 212, and the fifth overlapping edge 223 is overlapped and fixed to the first overlapping edge 213. The overlapping area is large, so that a tight and stable connection is established between the second overlapping member 22 and the first overlapping member 21. If the vehicle body structure 10 is applied to the vehicle 100, during the driving process of the vehicle 100, no matter it is subjected to various complex external forces such as longitudinal acceleration and braking force, lateral turning centrifugal force, or vertical road bump impact force, the fourth overlap edge 222 is overlapped and fixed with the third overlap edge 212, and the fifth overlap edge 223 is overlapped and fixed with the first overlap edge 213, which can effectively disperse and transmit various complex forces, avoid the first overlap component 21 and the second overlap component 22 from loosening or detaching due to concentrated force, ensure the firmness of the connection between the second overlap component 22 and the first overlap component 21, and thereby enhance the stability of the overall structure of the crossbeam 23, providing reliable support for the vehicle body structure 10 and even the entire vehicle 100.

[0084] In some embodiments of the present application, see Figure 1 、 Figure 2 、 Figure 5 、 Figure 6 As shown, the vehicle body structure 10 further includes a rocker inner panel connecting plate 5, which is adapted to be directly or indirectly connected to the rocker beam. The end of the second lap member 22 away from the passenger compartment is overlapped and fixed with the rocker inner panel connecting plate 5. In other words, for the second lap member 22 located on the right side of the passenger compartment, the right end (i.e. Figure 1 The negative end of the middle y-axis is overlapped and fixed to the rocker inner panel connecting plate 5. Specifically, the lower surface of the right end of the second overlapping member 22 is overlapped and fixed to the upper surface of the right end of the first overlapping member 21. This optimizes the transmission path of stress within the vehicle body structure 10, achieves uniform stress distribution, avoids stress concentration in a local area, and thus significantly enhances the overall structural stability of the vehicle body structure 10.

[0085] In some embodiments of the present application, see Figure 1 、 Figure 2 、 Figure 5 、 Figure 6As shown, a sealing structure 3 is provided at the joint between the second overlapping member 22 and the rocker inner panel connecting plate 5. Specifically, the sealing structure 3 prevents moisture from flowing into the cross member 23 from the joint between the second overlapping member 22 and the rocker inner panel connecting plate 5, thereby maintaining a dry interior of the cross member 23 and protecting components within the vehicle body structure 10 from moisture erosion. This effectively prevents problems such as rust and corrosion, thereby extending the service life of the vehicle body structure 10.

[0086] In the examples of this application, see Figure 1 、 Figure 4 、 Figure 5 、 Figure 8 、 Figure 9 As shown, the vehicle body structure 10 further includes a rocker inner panel connecting plate 5, and the first overlapping component 21 further includes a second overlapping edge 214, which is connected to the first main body 211 and overlapped and fixed to the rocker inner panel connecting plate 5. The second main body 221 further includes a sixth overlapping edge 224, which is overlapped and fixed to the rocker inner panel connecting plate 5 via the second overlapping edge 214. Specifically, the overlapping and fixing of the sixth overlapping edge 224 to the second overlapping edge 214 further expands and improves the connection structure between the crossbeam 23 and other key components (such as the rocker inner panel connecting plate 5 connected via the second overlapping edge 214), making the connection between the various components (such as the crossbeam 23 and the rocker inner panel connecting plate 5) more compact and stable, and constructing a more complex and high-strength connection network. When the vehicle 100 is subjected to various loads such as the weight of the vehicle body, the weight of passengers and cargo, and the impact force during driving, the force can be better transmitted and dispersed more evenly and effectively among the various components, effectively avoiding the concentration of stress in local areas (such as the crossbeam 23, the longitudinal beam 1, etc.), significantly enhancing the structural stability of the entire vehicle body structure 10, and ensuring that the vehicle body structure 10 can reliably play a supporting role under different working conditions (such as acceleration, braking, turning, passing bumpy roads, etc.).

[0087] In some embodiments, a sealing structure 3 is provided at the joint between the sixth overlapping edge 224 and the second overlapping edge 214 .

[0088] In some embodiments, a sealing structure 3 is provided at the joint between the fifth overlapping edge 223 and the first overlapping edge 213 .

[0089] In some embodiments, a sealing structure 3 is provided at the joint between the fourth overlapping edge 222 and the third overlapping edge 212 .

[0090] In some embodiments, a sealing structure 3 is provided at the overlap between the second overlapping edge 214 and the rocker inner panel connecting plate 5 .

[0091] In other words, at least one of the four overlapping joints, namely, the fifth overlapping edge 223 and the first overlapping edge 213, the fourth overlapping edge 222 and the third overlapping edge 212, the sixth overlapping edge 224 and the second overlapping edge 214, and the second overlapping edge 214 and the door sill inner panel connecting plate 5, is provided with a sealing structure 3.

[0092] In some embodiments of the present application, see Figure 1 、 Figure 4 、 Figure 5 、 Figure 8 As shown, a sealing structure 3 is provided at the joint between the fourth overlapping edge 222 and the third overlapping edge 212, a sealing structure 3 is provided at the joint between the fifth overlapping edge 223 and the first overlapping edge 213, a sealing structure 3 is provided at the joint between the sixth overlapping edge 224 and the second overlapping edge 214, and a sealing structure 3 is provided at the joint between the second overlapping edge 214 and the sill inner panel connecting plate 5. Specifically, the provision of the sealing structure 3 at the joint between the fourth overlapping edge 222 and the third overlapping edge 212, the joint between the fifth overlapping edge 223 and the first overlapping edge 213, the joint between the sixth overlapping edge 224 and the second overlapping edge 214, and the joint between the second overlapping edge 214 and the sill inner panel connecting plate 5 forms a continuous and tight waterproof line, effectively blocking moisture from entering the crossbeam 23 through the gaps, thereby preventing the crossbeam 23 from becoming damp or moldy due to moisture, and ensuring the reliability and stability of the crossbeam 23.

[0093] In the related art, the vehicle body structure 10 prevents moisture from entering the crossbeam cavity by adding a cavity partition within the longitudinal beam 1. However, when the vehicle body structure 10 is subjected to complex working conditions, the cavity partition has the risk of failure, resulting in unsatisfactory sealing. According to the vehicle body structure 10 of the embodiment of the present application, by adding a sealing structure 3 (such as a sealant, etc.) between the crossbeam 23 and the longitudinal beam 1, the sealing stability of the crossbeam 23 is greatly improved, and the use of the cavity partition is eliminated. The production cost of a single vehicle body structure 10 is reduced (by approximately 20 yuan), which brings huge economic benefits to the large-scale production of the vehicle body structure 10.

[0094] In the examples of this application, see Figure 1 、 Figure 2 As shown, in the vehicle width direction, the end of the first main body 211 close to the passenger compartment is overlapped and fixed with the cross beam 23, and the end of the second main body 221 close to the passenger compartment is overlapped and fixed with the cross beam 23. In other words, for the first overlapping member 21 and the second overlapping member 22 located on the right side of the passenger compartment, the left end of the first main body 211 (i.e. Figure 1 The left end of the second main body 221 (i.e. Figure 1The cross beam 23 is overlapped and fixed with the first overlap member 21 and the second overlap member 22 in the positive direction of the middle y-axis, thereby connecting the cross beam 23, the first overlap member 21 and the second overlap member 22 to form a more stable overall structure. When the body structure 10 is applied to the vehicle 100, when the vehicle 100 is subjected to a load, the force can be more evenly transmitted and dispersed through the cross beam 23, the first overlap member 21 and the second overlap member 22, avoiding the problem of stress concentration, thereby improving the overall bearing capacity of the cross beam 23 and maintaining the stability of the body structure 10.

[0095] Optionally, in some embodiments, the cross section of the cross beam 23 is a parallelogram. Specifically, designing the cross section of the cross beam 23 as a parallelogram allows the cross beam 23 to be better and more conveniently assembled on the first overlapping member 21 and the second overlapping member 22, and the cross beam 23 cooperates with the first overlapping member 21 and the second overlapping member 22 to achieve a better sealing effect.

[0096] Optionally, in some embodiments, the cross section of the beam 23 is square, rectangular or other shapes.

[0097] Optionally, refer to Figure 9 As shown, the cavity wall of the first accommodating cavity is a first overlapping component 21 and a second overlapping component 22. The cross section of the structure after the first overlapping component 21 and the second overlapping component 22 are connected is a parallelogram.

[0098] In some embodiments of the present application, see Figure 1 、 Figure 2 As shown, there are two longitudinal beams 1, which are spaced apart. A first overlapping part 21 and a second overlapping part 22 are provided on each longitudinal beam 1. The first overlapping parts 21 of the two longitudinal beams 1 are spaced apart, and the second overlapping parts 22 of the two longitudinal beams 1 are spaced apart. The ends of the crossbeam 23 are connected to the longitudinal beams 1 through the first overlapping parts 21 and the second overlapping parts 22 at the corresponding ends. Specifically, the spaced apart arrangement of the two longitudinal beams 1 and the corresponding connection structure layout make rational use of the space of the vehicle body structure 10, ensure the stable connection of the first overlapping part 21 and the second overlapping part 22, and leave a certain space between the two longitudinal beams 1 for the orderly arrangement of other components (such as the battery pack), avoiding space waste and mutual interference between components, improving the utilization rate of the vehicle body structure 10, and making the vehicle body structure 10 more compact and reasonable.

[0099] In some embodiments of the present application, see Figure 1 、 Figure 2As shown, the crossbeam 23 has a crossbeam cavity within it. Specifically, the provision of the crossbeam cavity reduces material usage while ensuring that the crossbeam 23 has a certain structural strength and meets the functional requirements of the crossbeam 23. Compared to a solid crossbeam 23 structure, the crossbeam cavity does not need to be filled with excess material, effectively reducing the weight of the crossbeam 23 and, consequently, the weight of the vehicle body structure 10. If the vehicle body structure 10 is used in a vehicle 100, the vehicle 100's own weight is also reduced, which helps to increase the vehicle's mileage and conforms to the trend of modern vehicles 100 pursuing lightweight designs to improve energy efficiency.

[0100] In some embodiments, the overlap between the first body portion 211 and the cross beam 23 is at least partially separated to form a first plug welding notch 41. The first plug welding notch 41 provides space for solder, so that the connection between the first body portion 211 and the cross beam 23 is firmly welded.

[0101] In some embodiments, the overlap between the second body portion 221 and the cross beam 23 is at least partially separated to form a second plug welding notch 42. The second plug welding notch 42 provides space for solder, so that the connection between the second body portion 221 and the cross beam 23 is firmly welded.

[0102] In some embodiments of the present application, see Figures 1-4 As shown, the overlap of the first main body 211 and the crossbeam 23 is at least partially separated to form a first plug welding notch 41, and the overlap of the second main body 221 and the crossbeam 23 is at least partially separated to form a second plug welding notch 42. Specifically, the first main body 211 and the crossbeam 23 are overlapped and fixed by welding at the first plug welding notch 41, and the second main body 221 and the crossbeam 23 are overlapped and fixed by welding at the second plug welding notch 42, thereby achieving a tight and reliable connection between the first main body 211 and the crossbeam 23, and between the second main body 221 and the crossbeam 23, thereby improving the welding quality and efficiency. The first plug welding notch 41 and the second plug welding notch 42 provide space for the solder, so that the weld connection is firm. Crossbeam 23

[0103] In the examples of this application, see Figure 5-Figure 8As shown, the first lap joint 21 is integrally provided with the cross beam 23, and the second lap joint 22 is integrally provided with the cross beam 23. In other words, part of the cross beam is formed as a part of the first lap joint 21, and the other part of the cross beam is formed as a part of the second lap joint 22. Specifically, the first lap joint 21 and the second lap joint 22 are respectively integrally provided with the cross beam 23, eliminating the connection gaps and potential loosening risks between the components, making the entire structure a highly unified, continuous and stable whole. When the vehicle 100 is driving, whether it is subjected to longitudinal rapid acceleration, sudden braking force, lateral high-speed turning centrifugal force, or vertical violent bump impact force, stress can be more evenly and efficiently transmitted and dispersed in this integrated structure, avoiding problems such as structural deformation, fracture or component loosening caused by weak connection parts, greatly enhancing the load-bearing capacity and stability of the vehicle body structure 10 under complex working conditions, and providing a solid and reliable guarantee for the safe driving of the vehicle.

[0104] In some embodiments of the present application, see Figure 5-Figure 8 As shown, a crossbeam cavity is defined between the first main body portion 211 and the second main body portion 221. Specifically, the provision of the crossbeam cavity provides crossbeam 23 with a certain structural strength and meets the functional requirements of crossbeam 23 while reducing the amount of material used. Compared to a solid structure between the first main body portion 211 and the second main body portion 221, the crossbeam cavity does not need to be filled with excess material, effectively reducing the total weight of crossbeam 23 and, consequently, the weight of vehicle body structure 10. If vehicle body structure 10 is applied to vehicle 100, the weight of vehicle 100 is also reduced accordingly, which helps to increase the cruising range of vehicle 100 and conforms to the trend of modern vehicles 100 pursuing lightweight design to improve energy efficiency.

[0105] In some embodiments of the present application, see Figure 5 、 Figure 6 As shown, there are two longitudinal beams 1, which are spaced apart, and the first overlapping member 21 and the second overlapping member 22 both extend from one longitudinal beam 1 to the other longitudinal beam 1. Specifically, by extending the first overlapping member 21 and the second overlapping member 22 from one longitudinal beam 1 to the other longitudinal beam 1, the first overlapping member 21 and the second overlapping member 22 are fixedly connected to form a crossbeam cavity, eliminating the need for a separate crossbeam 23, making the vehicle body structure 10 more concise and compact, and effectively improving the integration and space utilization of the vehicle body structure 10.

[0106] In some embodiments, the longitudinal beam body 11 is recessed downward at the first plate portion 2112 to form a step structure with a large drop, making the longitudinal beam body 11 difficult to form in terms of process. A process notch is opened at the bending point of the longitudinal beam body 11, which reduces the difficulty of process forming while ensuring the normal operation of the sealing structure 3.

[0107] In some embodiments, the first lap joint 21 and the second lap joint 22 are each an L-shaped stamped part. Thus, through the use of hot-forming technology for stamped parts and the crossbeam cavity enclosed by the L-shaped first lap joint 21 and the L-shaped second lap joint 22, the dynamic stiffness of the vehicle body structure 10 is significantly increased, thereby enhancing the handling performance of the vehicle 100 (for example, protecting the passenger compartment from a side-column impact).

[0108] In the related art, the crossbeam in the vehicle body structure is fixed to the longitudinal beam via an inverted "U"-shaped structure. However, when the vehicle body structure encounters complex working conditions, the crossbeam is easily loosened and water easily enters the interior of the crossbeam. According to the vehicle body structure 10 of the embodiment of the present application, the crossbeam 23 is fixed to the longitudinal beam 1 and the rocker inner panel connecting plate 5 respectively through the "L"-shaped design of the first overlapping member 21 and the "L"-shaped design of the second overlapping member 22. The sealing structure 3 (such as a sealant, etc.) prevents moisture in the longitudinal beam 1 from entering the crossbeam 23, making the fixation of the crossbeam 23 more stable. When the vehicle body structure 10 encounters complex working conditions, the crossbeam 23 will not loosen and cause the sealing structure 3 to fail.

[0109] In some embodiments of the present application, see Figures 1-9 As shown, a mounting bracket for the battery pack is positioned within the crossbeam cavity. Specifically, placing the mounting bracket within the crossbeam cavity avoids occupying valuable space within the vehicle body structure 10 to accommodate the battery pack, making the layout of the vehicle body structure 10 more compact and organized. If the vehicle body structure 10 is used in a vehicle 100, interference with the layout of other components of the vehicle 100 is reduced, resulting in more rational overall space planning for the vehicle 100.

[0110] In some embodiments, the second connecting member 22 has a mounting hole, and a portion of the mounting bracket is fixed to the mounting hole, thereby improving the secure installation of the battery pack on the mounting bracket.

[0111] In some embodiments, the mounting holes on the second overlapping member 22 are plain holes or threaded holes.

[0112] In the examples of this application, see Figure 1 、 Figure 2 、 Figure 5 、 Figure 6As shown, the vehicle body structure 10 further includes a sealing plate 7, which is partially located below the longitudinal beam body 11 and is overlapped and fixed to the longitudinal beam body 11. Specifically, the sealing plate 7 is located below the longitudinal beam body 11 and overlapped and fixed thereto, forming a barrier that effectively blocks moisture from entering the longitudinal beam 1 and other key areas of the vehicle body structure 10 from the bottom, thereby preventing rust and corrosion of the internal structure of the longitudinal beam 1 due to moisture and extending the service life of the longitudinal beam 1. If the vehicle body structure 10 is used in a vehicle 100, the provision of the sealing plate 7 reduces the possibility of moisture entering the vehicle body structure 10, resulting in moisture and mold in the vehicle interior, thereby ensuring a comfortable interior environment.

[0113] In the examples of this application, see Figure 9 As shown, the longitudinal beam body 11 is provided with a longitudinal beam leakage hole 111, and the sealing plate 7 is provided with a sealing plate leakage hole 71, which is connected to the longitudinal beam leakage hole 111. Specifically, the addition of the longitudinal beam leakage hole 111 and the sealing plate leakage hole 71 prevents air accumulation in the longitudinal beam 1 and the sealing plate 7 during the electrophoresis process. At the same time, the connection between the longitudinal beam leakage hole 111 and the sealing plate leakage hole 71 provides a drainage channel for moisture in the longitudinal beam 1, thereby preventing the longitudinal beam 1 and the entire vehicle body structure 10 from rusting and corrosion due to long-term moisture exposure, thereby extending the service life of the components.

[0114] In some embodiments, the longitudinal beam leakage hole 111 is provided outside the sealing area to prevent moisture in the longitudinal beam from flowing into the passenger compartment.

[0115] It should be understood that the aforementioned sealing area is the area separating the longitudinal beam and the passenger compartment.

[0116] In some embodiments of the present application, see Figure 1-9 As shown, the sealing structure 3 is a sealant or a sealing ring. Specifically, both the sealant and the sealing ring have excellent sealing properties. The sealant can fill various irregular gaps and, after application, adheres tightly to the surface of the connection, forming a continuous and seamless sealing layer, effectively preventing moisture from entering the crossmember cavity. The sealing ring, relying on its inherent elasticity and close fit with the mating component, achieves a reliable seal at locations such as the overlap, ensuring the tightness of the vehicle body structure 10 and effectively preventing moisture from entering the crossmember cavity.

[0117] See Figure 10 As shown, the vehicle according to the embodiment of the present application includes the above-mentioned vehicle body structure 10.

[0118] According to the vehicle of the embodiment of the present application, its body structure 10 blocks the transmission path of moisture between the longitudinal beam 1 and the cross beam 23 by setting the first overlapping edge 213 in the vehicle height direction at a distance from the bottom surface of the longitudinal beam 1, thereby preventing problems such as water accumulation, rust and abnormal noise inside the cross beam 23 from the root, and at the same time preventing moisture from entering the passenger compartment, thereby ensuring the dryness and comfort of the vehicle interior environment and improving the overall reliability and durability of the vehicle 100.

[0119] In the description of this application, it should be understood that the terms "longitudinal", "transverse", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing this application 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 cannot be understood as a limitation on this application.

[0120] In this application, unless otherwise expressly specified or limited, terms such as "mounted," "connected," "connect," and "fixed" should be understood broadly. For example, they may refer to fixed connections, detachable connections, or integration; mechanical connections, electrical connections, or communication; direct connections or indirect connections through an intermediate medium; and internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of these terms in this application based on specific circumstances.

[0121] In the description of this specification, the reference terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification.

[0122] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. A vehicle body structure (10), characterized in that: The vehicle body structure (10) includes beam (23); A longitudinal beam (1), wherein the longitudinal beam (1) is overlapped with the cross beam (23); A first overlapping component (21), the first overlapping component (21) comprising a first main body portion (211) and a first overlapping edge (213) connected to the first main body portion (211); The first main body (211) at least partially covers the bottom surface of the crossbeam (23), or the first overlapping component (21) and the crossbeam (23) are integrally arranged; Along the vehicle height direction, the first overlapping edge (213) is spaced apart from the bottom surface of the longitudinal beam (1).

2. The vehicle body structure (10) according to claim 1, characterized in that The first main body portion (211) includes a first plate portion (2112) and a second plate portion (2113) connected to each other, and the first overlapping edge (213) is connected to the second plate portion (2113), wherein the first plate portion (2112) covers the bottom surface of the beam (23), and the second plate portion (2113) covers the side surface of the beam (23).

3. The vehicle body structure (10) according to claim 2, characterized in that: The longitudinal beam (1) includes a longitudinal beam body (11) and a longitudinal beam sealing plate (12), wherein the longitudinal beam sealing plate (12) is arranged above the longitudinal beam body (11), the first overlapping edge (213) is overlapped and fixed with the longitudinal beam sealing plate (12), and the first overlapping edge (213) is spaced apart from the bottom surface of the longitudinal beam body (11).

4. The vehicle body structure (10) according to claim 3, characterized in that A plug welding through hole (121) is provided on the longitudinal beam sealing plate (12), and in the thickness direction of the longitudinal beam sealing plate (12), the plug welding through hole (121) passes through to the first overlapping edge (213).

5. The vehicle body structure (10) according to claim 3, characterized in that The vehicle body structure (10) further includes a door sill inner panel connecting plate (5), wherein the door sill inner panel connecting plate (5) is suitable for connecting with the longitudinal beam body (11) and the longitudinal beam sealing plate (12); the first overlapping component (21) further includes a second overlapping edge (214), wherein the second overlapping edge (214) is connected to the first main body (211), and the second overlapping edge (214) is overlapped and fixed with the door sill inner panel connecting plate (5).

6. The vehicle body structure (10) according to claim 5, characterized in that A sealing structure (3) is provided at the overlap between the second overlap edge (214) and the door sill inner panel connecting plate (5).

7. The vehicle body structure (10) according to claim 5, characterized in that The first main body portion (211) further includes a third plate portion (2114), the third plate portion (2114) being connected to the first plate portion (2112) and the second plate portion (2113) respectively, the third plate portion (2114) being arranged opposite to the door sill inner plate connecting plate (5) along the vehicle width direction, and the third plate portion (2114) being connected to the second overlapping edge (214).

8. The vehicle body structure (10) according to claim 3, characterized in that The first overlapping component (21) further includes a third overlapping edge (212), the third overlapping edge (212) being connected to the first plate portion (2112), and the third overlapping edge (212) being overlapped and fixed to the longitudinal beam body (11).

9. The vehicle body structure (10) according to claim 8, characterized in that A sealing structure (3) is provided at the overlap of the first overlap edge (213) and the longitudinal beam sealing plate (12); and / or, A sealing structure (3) is provided at the overlap between the third overlap edge (212) and the longitudinal beam body (11).

10. The vehicle body structure (10) according to claim 3, characterized in that A sinking platform structure (2111) is also provided on the first plate portion (2112), wherein the sinking platform structure (2111) is recessed toward the longitudinal beam body (11), and the sinking platform structure (2111) is fixed to the longitudinal beam body (11) by welding.

11. The vehicle body structure (10) according to claim 2, characterized in that The first plate portion (2112) is arranged to be inclined relative to a horizontal plane.

12. The vehicle body structure (10) according to claim 1, characterized in that The vehicle body structure (10) further includes a second overlapping component (22), wherein the second overlapping component (22) is arranged above the first overlapping component (21) and is connected to the first overlapping component (21).

13. The vehicle body structure (10) according to claim 12, characterized in that In the vehicle length direction, the first overlapping component (21) is provided with a third overlapping edge (212) opposite to the first overlapping edge (213); one end of the second overlapping component (22) is overlapped and fixed with the first overlapping edge (213), and the other end of the second overlapping component (22) is overlapped and fixed with the third overlapping edge (212), and a first accommodating cavity is enclosed between the second overlapping component (22) and the first overlapping component (21).

14. The vehicle body structure (10) according to claim 13, characterized in that The end of the crossbeam (23) extends into the first accommodating cavity, and the first main body (211) at least partially covers the bottom surface of the crossbeam (23).

15. The vehicle body structure (10) according to claim 13, characterized in that The second overlapping component (22) comprises: a second main body portion (221); a fourth overlapping edge (222), the fourth overlapping edge (222) being connected to the second main body portion (221), the fourth overlapping edge (222) being overlapped and fixed to the third overlapping edge (212); and A fifth overlapping edge (223), the fifth overlapping edge (223) is connected to the second main body portion (221), and the fifth overlapping edge (223) is overlapped and fixed with the first overlapping edge (213).

16. The vehicle body structure (10) according to claim 15, characterized in that The vehicle body structure (10) further includes a door sill inner panel connecting plate (5); the first overlapping component (21) further includes a second overlapping edge (214); the second overlapping edge (214) is connected to the first main body (211); the second overlapping edge (214) is overlapped and fixed to the door sill inner panel connecting plate (5); the second main body (221) further includes a sixth overlapping edge (224); the sixth overlapping edge (224) is overlapped and fixed to the door sill inner panel connecting plate (5) via the second overlapping edge (214).

17. The vehicle body structure (10) according to claim 16, characterized in that A sealing structure (3) is provided at the overlap of the sixth overlap edge (224) and the second overlap edge (214).

18. The vehicle body structure (10) according to claim 15, characterized in that A sealing structure (3) is provided at the overlap of the fifth overlap edge (223) and the first overlap edge (213); and / or, A sealing structure (3) is provided at the overlap of the fourth overlap edge (222) and the third overlap edge (212).

19. The vehicle body structure (10) according to claim 15, characterized in that In the vehicle width direction, one end of the first main body (211) close to the passenger compartment is overlapped and fixed to the cross beam (23), and one end of the second main body (221) close to the passenger compartment is overlapped and fixed to the cross beam (23).

20. The vehicle body structure (10) according to claim 19, characterized in that The overlap between the first main body portion (211) and the crossbeam (23) is at least partially separated to form a first plug welding notch (41); and / or, The overlap between the second main body portion (221) and the crossbeam (23) is at least partially separated to form a second plug welding notch (42).

21. The vehicle body structure (10) according to claim 12, characterized in that The first overlapping component (21) is integrally provided with the cross beam (23), and the second overlapping component (22) is integrally provided with the cross beam (23).

22. The vehicle body structure (10) according to claim 3, characterized in that The vehicle body structure (10) further comprises a sealing plate (7), wherein the sealing plate (7) is partially located below the longitudinal beam body (11), and the sealing plate (7) is overlapped and fixed to the longitudinal beam body (11).

23. The vehicle body structure (10) according to claim 22, characterized in that The longitudinal beam body (11) is provided with a longitudinal beam leakage hole (111), the sealing plate (7) is provided with a sealing plate leakage hole (71), and the sealing plate leakage hole (71) is communicated with the longitudinal beam leakage hole (111).

24. A vehicle (100), characterized in that The vehicle body structure (10) comprises any one of claims 1-23.

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