Vehicle body connection structure and vehicle

Abstract

The embodiment of the application provides a vehicle body connecting structure and a vehicle. The vehicle body connecting structure comprises a front longitudinal beam assembly, an upper side beam assembly, a longitudinal beam mounting plate, an assembly support and a lap joint piece; the rear side of the longitudinal beam mounting plate is connected with the front end of the front longitudinal beam assembly, and the front end of the front longitudinal beam assembly and the lower end of the upper side beam assembly are connected through the lap joint piece; the upper side beam assembly comprises an upper side beam outer plate and an upper side beam inner plate, the upper side beam outer plate is connected with the upper side beam inner plate, and the two form a lap joint area arranged along the front-rear direction of the vehicle; the longitudinal beam mounting plate, the lap joint area and the assembly support are fixed in the left-right direction of the vehicle through screwing; and the lap joint piece, the lap joint area and the assembly support are fixed in the left-right direction of the vehicle through screwing. The vehicle body connecting structure is fixed in the left-right direction of the vehicle through screwing at two positions, which can not only increase the connecting force of the connecting position, but also disperse the impact force in the front-rear direction of the vehicle, so that when the vehicle is subjected to a small offset collision, the connecting position does not tear or the tearing time point can be prolonged when tearing occurs.

Description

Technical Field

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

[0002] Vehicle collisions cause enormous losses to society. Among car collisions with different overlap rates, small overlap collisions (25% frontal collisions) are a relatively common type of accident, easily causing deformation of the passenger compartment and serious injuries to passengers' legs and feet. Small overlap collisions differ significantly from traditional 100% frontal and 40% offset collisions, primarily in the smaller overlap. This makes it difficult for the traditionally designed front longitudinal beam assembly, intended for crumple zone energy absorption, to function effectively, while the upper side beam assembly, with its relatively weak overall structure, cannot withstand most of the impact force. Existing vehicle body connection structures are prone to tearing at the weld joints between the front longitudinal beam assembly and the upper side beam assembly during small overlap collisions, resulting in insufficient energy absorption by the front longitudinal beam assembly and a minimal contribution from the upper side beam assembly to energy absorption. Utility Model Content

[0003] This application provides a vehicle body connection structure and vehicle, which aims to improve the problem of easy tearing at the connection between the front longitudinal beam assembly and the upper side beam assembly.

[0004] This application provides a vehicle body connection structure, including a front longitudinal beam assembly, an upper side beam assembly, a longitudinal beam mounting plate, a final assembly bracket, and a connecting piece;

[0005] The rear side of the longitudinal beam mounting plate is connected to the front end of the front longitudinal beam assembly, and the front end of the front longitudinal beam assembly and the lower end of the upper beam assembly are connected by the lap joint.

[0006] The upper side beam assembly includes an outer upper side beam plate and an inner upper side beam plate. The outer upper side beam plate overlaps with the inner upper side beam plate, and the two form an overlap area along the front-rear direction of the vehicle.

[0007] The longitudinal beam mounting plate, the overlapping area, and the final assembly bracket are screwed together and fixed along the left-right direction of the vehicle.

[0008] The overlapping component, the overlapping area, and the final assembly bracket are screwed together along the left-right direction of the vehicle.

[0009] In this embodiment, the rear side of the longitudinal beam mounting plate connects to the front end of the front longitudinal beam assembly. The overlapping area formed by the longitudinal beam mounting plate, the outer plate of the upper side beam, and the inner plate of the upper side beam, as well as the assembly bracket, are screwed together along the left-right direction of the vehicle, forming a transverse rigid frame. This frame can both disperse the collision force along the front-rear direction of the vehicle and ensure the connection force at the joint, thereby improving the torsional stiffness of the vehicle body connection structure. The front end of the front longitudinal beam assembly and the lower end of the upper side beam assembly are connected by an overlapping member. The overlapping area formed by the assembly bracket, the outer plate of the upper side beam, and the inner plate of the upper side beam, as well as the overlapping member, are screwed together along the left-right direction of the vehicle, forming another... The transverse rigid frame can disperse the impact force along the front-rear direction of the vehicle and ensure the connection force at the joint, thereby improving the torsional stiffness of the vehicle body connection structure. The two transverse rigid frames are screwed together along the left-right direction of the vehicle, which can effectively disperse the impact force along the front-rear direction of the vehicle in the event of a small offset collision, so that there is no tearing at the connection between the upper beam assembly and the front longitudinal beam assembly, or if tearing occurs, it can extend the tearing time point. Moreover, the two transverse rigid frames are screwed together to fix multiple structural components, so that multiple structural components share a single screw structure, which reduces costs and can achieve cost reduction and weight reduction.

[0010] In one embodiment, the longitudinal beam mounting plate includes a mounting plate body and a mounting plate flange extending forward in the vehicle longitudinal direction from at least a portion of the edge of the mounting plate body.

[0011] The rear side of the mounting plate body is connected to the front end of the front longitudinal beam assembly;

[0012] The mounting plate flange, the overlapping area, and the final assembly bracket are fixed by screws.

[0013] In this embodiment, the mounting plate flange is set along the front-rear direction of the vehicle, and the mounting plate flange, the overlapping area of ​​the upper side beam assembly, and the final assembly bracket are screwed together along the left-right direction of the vehicle to ensure the connection force at the connection point of the three. In the event of a small offset collision, the connection between the upper side beam assembly and the front longitudinal beam assembly can be free from tearing or, if tearing occurs, the tearing time point can be extended, thereby enhancing the stability of the vehicle body connection structure.

[0014] In one embodiment, the final assembly bracket includes a bracket body, a first bracket arm extending outward from one side edge of the bracket body along the left-right direction of the vehicle, and a second bracket arm extending inward from the other side edge of the bracket body along the left-right direction of the vehicle, wherein the bracket body is arranged along the front-rear direction of the vehicle.

[0015] The longitudinal beam mounting plate, the overlapping area, and the bracket body are fixed by screws;

[0016] The second support arm is fixed to the lap joint by screws;

[0017] Both the first support arm and the second support arm are used to screw and fix the device to be installed.

[0018] In this embodiment, the overlapping area of ​​the longitudinal beam mounting plate, the upper beam assembly, and the bracket body are fixed by screws to ensure the connection force at the connection point. The overlapping member and the second bracket arm are fixed by screws to ensure the connection stability between the overlapping member and the final assembly bracket. Both the first bracket arm and the second bracket arm are used to screw the device to be installed to ensure the connection force at the connection point between the final assembly bracket and the device to be installed.

[0019] In one embodiment, the first support arm includes a first connecting portion extending outward from the lower edge of the support body along the left-right direction of the vehicle, a second connecting portion extending forward from the first connecting portion along the front-rear direction of the vehicle, and a third connecting portion extending inward from the second connecting portion along the left-right direction of the vehicle.

[0020] The second support arm includes a fourth connecting portion extending inward from the front edge of the support body along the left-right direction of the vehicle, a fifth connecting portion extending backward from the fourth connecting portion along the front-rear direction of the vehicle, a sixth connecting portion extending inward from the fifth connecting portion along the left-right direction of the vehicle, a seventh connecting portion extending forward and inward from the sixth connecting portion along the front-rear direction of the vehicle, and an eighth connecting portion extending outward from the seventh connecting portion along the left-right direction of the vehicle.

[0021] The sixth connecting part is fixed to the overlapping member by screw connection;

[0022] Both the third connecting part and the eighth connecting part are used to screw and fix the device to be installed.

[0023] In this embodiment, the first, second, and third connecting parts connected in sequence form a first C-shaped structure with an inward opening, while the fourth, fifth, sixth, seventh, and eighth connecting parts connected in sequence form a second C-shaped structure with an outward opening. The two together form a receiving space to accommodate the device to be installed. Furthermore, a rearward clearance space is formed between the bracket body, the fourth connecting part, and the fifth connecting part to ensure installation feasibility.

[0024] In one embodiment, the vehicle body connection structure further includes an energy-absorbing box and a crash beam;

[0025] The front side of the longitudinal beam mounting plate is connected to the anti-collision beam through the energy-absorbing box;

[0026] The assembly bracket is located below the energy-absorbing box.

[0027] In this embodiment, the energy-absorbing box and the anti-collision beam work together to enhance the collision energy absorption capacity of the vehicle body connection structure. The final assembly bracket is located below the energy-absorbing box to avoid the installation of the energy-absorbing box and the anti-collision beam, ensuring installation feasibility.

[0028] In one embodiment, the vehicle body connection structure further includes a subframe mounting assembly and a front longitudinal beam channel lower connecting plate;

[0029] The subframe mounting assembly is connected to the connecting piece;

[0030] The lower connecting plate of the front longitudinal beam channel is connected to the subframe mounting assembly and the upper side beam assembly.

[0031] In this embodiment, the subframe mounting assembly, the lower connecting plate of the front longitudinal beam channel, the lap joint, and the upper side beam assembly work together to form a cavity structure. When the vehicle is involved in a small offset collision, the cavity structure deforms as a whole to absorb energy, thereby improving the collision energy absorption capacity of the vehicle body connection structure and ensuring the stability of the vehicle body connection structure.

[0032] In one embodiment, the subframe mounting assembly includes a subframe mounting outer plate and a subframe mounting inner plate;

[0033] The subframe mounting plate is connected to the overlapping member and the lower connecting plate of the front longitudinal beam channel;

[0034] The subframe mounting inner panel is connected to the connecting piece and the subframe mounting outer panel.

[0035] The subframe mounting outer panel and the subframe mounting inner panel work together to form multiple cavity structures with the overlapping parts, the upper side beam assembly and the lower connecting plate of the front longitudinal beam channel, which helps to improve the collision energy absorption capacity of the body connection structure.

[0036] A vehicle includes a radiator and the aforementioned body connection structure, wherein the radiator is fixed to the assembly bracket by screws.

[0037] In this embodiment, the longitudinal beam mounting plate, the upper side beam assembly, and the final assembly bracket are fixed by bolting, replacing the traditional welding method between any two of the three, which saves overall costs. The bolting also enhances the connection strength at the joints. The presence of the final assembly bracket also increases the thickness at the joints, ensuring that the connection between the upper side beam assembly and the front longitudinal beam assembly does not tear or, if tearing occurs, extends the tear time point during a minor offset collision. This enhances the stability of the vehicle body connection structure without increasing costs. The bolting of the longitudinal beam mounting plate, the upper side beam assembly, and the final assembly bracket together reduces weight and costs. Attached Figure Description

[0038] Figure 1This is a perspective view of a vehicle body connection structure provided in an embodiment of this application;

[0039] Figure 2 This is a front view of a vehicle body connection structure provided in an embodiment of this application;

[0040] Figure 3 This is a side view of a vehicle body connection structure provided in an embodiment of this application;

[0041] Figure 4 This is a top view of a vehicle body connection structure provided in an embodiment of this application;

[0042] Figure 5 yes Figure 1 Sectional view of line AA in the middle;

[0043] Figure 6 yes Figure 1 A cross-sectional view along the BB line.

[0044] Explanation of reference numerals in the attached figures:

[0045] 1. Front longitudinal beam assembly; 2. Upper side beam assembly; 21. Upper side beam outer plate; 22. Upper side beam inner plate; 3. Longitudinal beam mounting plate; 31. Mounting plate body; 32. Mounting plate flange; 4. Final assembly bracket; 41. Bracket body; 42. First bracket arm; 421. First connecting part; 422. Second connecting part; 423. Third connecting part; 43. Second bracket arm; 431. Fourth connecting part; 432. Fifth connecting part; 433. Sixth connecting part; 434. Seventh connecting part; 435. Eighth connecting part; 5. Overlapping piece; 6. Subframe mounting assembly; 61. Subframe mounting outer plate; 62. Subframe mounting inner plate; 7. Front longitudinal beam channel lower connecting plate; 81. Bolt; 82. Bolt; 83. Bolt; 84. Bolt. Detailed Implementation

[0046] To make the technical problems, technical solutions, and beneficial effects solved by this application clearer, the following detailed description is provided in conjunction with embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0047] The existing vehicle body connection structure includes a front longitudinal beam assembly 1 and an upper side beam assembly 2. In one example, the front end of the front longitudinal beam assembly 1 is not connected to the upper side beam assembly 2, and the rear end of the front longitudinal beam assembly 1 is connected to the upper side beam assembly 2 through the front wheel arch to form an integral structure. In this type of vehicle body connection structure, the front longitudinal beam assembly 1 is difficult to function in a small offset collision, while the upper side beam assembly 2 is very thin and connected to the rear end of the front longitudinal beam assembly 1 through the front wheel arch. Its guiding and energy absorption functions in small offset collisions are obviously insufficient, and it is easy to cause deformation of the passenger compartment in the event of a small offset collision. In another example, the front end of the front longitudinal beam assembly 1 is connected to the upper side beam assembly 2 via an energy-absorbing box, and the rear end of the front longitudinal beam assembly 1 is connected to the upper side beam assembly 2 via the front wheel arch to form an integral structure. In a small offset collision, the energy-absorbing box allows the front longitudinal beam assembly 1 to participate in the deformation of the small offset collision to a certain extent. However, in a small offset collision, the connection between the upper side beam assembly 2 and the front longitudinal beam assembly 1 is prone to tearing. After the connection is torn, the amount of deformation of the front longitudinal beam assembly 1 participating in the collision energy absorption decreases, resulting in instability of the vehicle body connection structure.

[0048] In other words, when a small offset collision occurs, the impact force along the vehicle's longitudinal direction is transmitted to the front longitudinal beam assembly 1 and the upper side beam assembly 2. Due to the small overlap between the small offset collision and the front longitudinal beam assembly 1, the front longitudinal beam assembly 1 has insufficient energy absorption and is unable to play its role. Meanwhile, the barrier of the small offset collision collides head-on with the upper side beam assembly 2 along the vehicle's longitudinal direction. The upper side beam assembly 2 itself has a relatively weak structure and cannot withstand a large impact force. As a result, the connection between the front end of the front longitudinal beam assembly 1 and the upper side beam assembly 2 will tear prematurely during the small offset collision. This leads to the problem that the front longitudinal beam assembly 1 has insufficient energy absorption and the upper side beam assembly 2 does not contribute much to the energy absorption of the collision.

[0049] This application provides a vehicle body connection structure, such as... Figures 1-6 As shown, the vehicle body connection structure includes a front longitudinal beam assembly 1, an upper side beam assembly 2, a longitudinal beam mounting plate 3, a final assembly bracket 4, and an overlap member 5; the rear side of the longitudinal beam mounting plate 3 is connected to the front end of the front longitudinal beam assembly 1, and the front end of the front longitudinal beam assembly 1 and the lower end of the upper side beam assembly 2 are connected by the overlap member 5; the upper side beam assembly 2 includes an upper side beam outer plate 21 and an upper side beam inner plate 22, the upper side beam outer plate 21 and the upper side beam inner plate 22 overlap, and the two form an overlap area set along the front-rear direction of the vehicle; the longitudinal beam mounting plate 3, the overlap area and the final assembly bracket 4 are screwed together and fixed along the left-right direction of the vehicle; the overlap member 5, the overlap area and the final assembly bracket 4 are screwed together and fixed along the left-right direction of the vehicle.

[0050] Among them, the assembly bracket 4 is a bracket used to install the device to be installed. The assembly bracket 4 here can be, but is not limited to, a heat sink mounting bracket, used to install the heat sink as the device to be installed.

[0051] As an example, the vehicle body connection structure includes a front longitudinal beam assembly 1 and a longitudinal beam mounting plate 3 fixed thereon. The rear side of the longitudinal beam mounting plate 3 is connected to the front end of the front longitudinal beam assembly 1. Specifically, the rear side of the longitudinal beam mounting plate 3 is welded to the front end of the front longitudinal beam assembly 1. The front side of the longitudinal beam mounting plate 3 can be connected to a crash beam via an energy-absorbing box, or it can be connected to other structures. The vehicle body connection structure also includes a lap joint 5, which connects the front end of the front longitudinal beam assembly 1 and the lower end of the upper side beam assembly 2. Specifically, the lap joint 5 and the front end of the front longitudinal beam assembly 1 can be connected by welding, and the lap joint 5 and the lower end of the upper side beam assembly 2 can also be connected by welding.

[0052] As an example, the upper beam assembly 2 includes an upper beam outer plate 21 and an upper beam inner plate 22. The upper beam outer plate 21 is disposed on the outside of the upper beam inner plate 22. The inner side of the upper beam outer plate 21 overlaps with the outer side of the upper beam inner plate 22, forming an overlap area along the front-rear direction of the vehicle. The overlap area is provided with threaded holes or through holes.

[0053] Bolts 81, arranged along the left-right direction of the vehicle, can be sequentially passed through the threaded holes or through holes of the assembly bracket 4, the outer plate 21 of the upper side beam, and the inner plate 22 of the upper side beam, and screwed into the threaded holes of the longitudinal beam mounting plate 3. The assembly bracket 4, the outer plate 21 of the upper side beam, the inner plate 22 of the upper side beam, and the longitudinal beam mounting plate 3 are screwed together and fixed by the bolts 81, forming a transverse rigid frame. This can ensure the connection force at the connection point and significantly improve the torsional stiffness of the vehicle body connection structure. In the event of a small offset collision, the strong torsional stiffness can resist torsional deformation. Moreover, the longitudinal beam mounting plate 3 can transfer the collision force along the front-rear direction of the vehicle to the outer plate 21 of the upper side beam, the inner plate 22 of the upper side beam, and the assembly bracket 4 along the screwed structure in the left-right direction of the vehicle. This allows the collision force to be transferred through multiple paths, reducing the collision force at the connection point between the upper side beam assembly 2 and the front longitudinal beam assembly 1. This can prevent tearing at the connection point between the upper side beam assembly 2 and the front longitudinal beam assembly 1, or extend the tearing time point if tearing occurs, thereby enhancing the stability of the vehicle body connection structure.

[0054] Bolts 82, arranged along the left-right direction of the vehicle, can be used to sequentially pass through the threaded holes or through holes of the final assembly bracket 4, the outer plate 21 of the upper side beam, and the inner plate 22 of the upper side beam, and screw them into the threaded holes of the lap joint 5. The final assembly bracket 4, the outer plate 21 of the upper side beam, the inner plate 22 of the upper side beam, and the lap joint 5 are screwed together and fixed, ensuring the stability of the connection of the final assembly bracket 4. In this example, bolts 82 can be placed below bolts 81, or their positional relationship can be determined according to the actual situation. In this example, the assembly bracket 4, the outer plate 21 of the upper beam, the inner plate 22 of the upper beam, and the lap joint 5 are screwed together along the left and right directions of the vehicle to form another transverse rigid frame, ensuring the connection force at the connection point and significantly improving the torsional stiffness of the vehicle body connection structure. When the vehicle experiences a small offset collision, the strong torsional stiffness can resist torsional deformation and enhance the stability of the vehicle body connection structure.

[0055] In this embodiment, the rear side of the longitudinal beam mounting plate 3 is connected to the front end of the front longitudinal beam assembly 1. The overlapping area formed by the longitudinal beam mounting plate 3, the outer plate 21 of the upper side beam, and the inner plate 22 of the upper side beam, as well as the assembly bracket 4, are screwed together along the left-right direction of the vehicle to form a transverse rigid frame. This frame can both disperse the collision force along the front-rear direction of the vehicle and ensure the connection force at the joint, thereby improving the torsional stiffness of the vehicle body connection structure. The front end of the front longitudinal beam assembly 1 and the lower end of the upper side beam assembly 2 are connected by a connecting piece 5. The overlapping area formed by the assembly bracket 4, the outer plate 21 of the upper side beam, and the inner plate 22 of the upper side beam, as well as the connecting piece 5, are screwed together along the left-right direction of the vehicle. The two transverse rigid frames are fixed together to form another transverse rigid frame, which can not only disperse the collision force along the front-rear direction of the vehicle, but also ensure the connection force at the connection point, thereby improving the torsional stiffness of the vehicle body connection structure. The two transverse rigid frames are screwed together along the left-right direction of the vehicle, which can effectively disperse the collision force along the front-rear direction of the vehicle in the event of a small offset collision, so that there is no tearing at the connection between the upper beam assembly 2 and the front longitudinal beam assembly 1, or if tearing occurs, the tearing time point can be extended. Moreover, the two transverse rigid frames are screwed together to fix multiple structural components, so that multiple structural components share a single screwing structure, which reduces costs and can achieve cost reduction and weight reduction.

[0056] In one embodiment, such as Figure 1 As shown, the longitudinal beam mounting plate 3 includes a mounting plate body 31 and a mounting plate flange 32 extending forward from at least a portion of the edge of the mounting plate body 31 in the vehicle longitudinal direction; the rear side of the mounting plate body 31 is connected to the front end of the front longitudinal beam assembly 1; the mounting plate flange 32, the overlapping area and the final assembly bracket 4 are fixed by screws.

[0057] As an example, the longitudinal beam mounting plate 3 includes a mounting plate body 31 and a mounting plate flange 32 extending forward along the vehicle's longitudinal direction from at least a portion of the edge of the mounting plate body 31. The rear side of the mounting plate body 31 is connected to the front end of the front longitudinal beam assembly 1, specifically by welding. The mounting plate flange 32 can be located on the outer edge and / or lower edge of the mounting plate body 31 to avoid the energy-absorbing box and the anti-collision beam. The mounting plate flange 32 is provided with threaded holes, and bolts 81 can be passed through the overlapping area of ​​the general assembly bracket 4 and the upper side beam assembly 2 in sequence, and then screwed into the threaded holes on the mounting plate flange 32. The longitudinal beam mounting plate 3, the upper side beam assembly 2 and the general assembly bracket 4 are screwed and fixed by bolts 81, ensuring the connection force at the connection point of the three. In the event of a small offset collision, the connection point between the upper side beam assembly 2 and the front longitudinal beam assembly 1 can be free from tearing or, if tearing occurs, the tearing time point can be extended, thereby enhancing the stability of the vehicle body connection structure.

[0058] In one embodiment, such as Figure 1 , Figure 2 , Figure 4 and Figure 6 As shown, the assembly bracket 4 includes a bracket body 41, a first bracket arm 42 extending outward from one side edge of the bracket body 41 along the left-right direction of the vehicle, and a second bracket arm 43 extending inward from the other side edge of the bracket body 41 along the left-right direction of the vehicle. The bracket body 41 is arranged along the front-rear direction of the vehicle. The longitudinal beam mounting plate 3, the overlapping area and the bracket body 41 are fixed by screws. The second bracket arm 43 is fixed to the overlapping piece 5 by screws. Both the first bracket arm 42 and the second bracket arm 43 are used to screw and fix the device to be installed.

[0059] As an example, the final assembly bracket 4 is a one-piece molded structural component. The final assembly bracket 4 includes a bracket body 41, a first bracket arm 42 extending outward from one side edge of the bracket body 41 along the left-right direction of the vehicle, and a second bracket arm 43 extending inward from the other side edge of the bracket body 41 along the left-right direction of the vehicle. The first bracket arm 42 and the second bracket arm 43 are located on different side edges of the bracket body 41, which can be adjacent side edges or opposite side edges. Moreover, the first bracket arm 42 is located on the outer side of the bracket body 41, and the second bracket arm 43 is located on the inner side of the bracket body 41. In this example, the bracket body 41 is arranged along the front-rear direction of the vehicle. The bracket body 41 is provided with threaded holes or through holes. Bolts 81 can be used to sequentially pass through the threaded holes or through holes of the bracket body 41, the threaded holes or through holes of the overlapping area, and the threaded holes of the longitudinal beam mounting plate 3 along the left-right direction of the vehicle, so that the bolts 81 are screwed into the threaded holes of the longitudinal beam mounting plate 3, so that the longitudinal beam mounting plate 3, the upper beam assembly 2, and the bracket body 41 are fixed by screwing, ensuring the connection force at the connection point of the three. The lap joint 5 is screwed to the second support arm 43 located inside the support body 41, specifically using bolts 83 to ensure the connection stability between the lap joint 5 and the assembly bracket 4. Both the first support arm 42 and the second support arm 43 are used to screw-fix the device to be installed, specifically using bolts 84 to screw-fix the device to be installed, ensuring the connection force at the connection point between the assembly bracket 4 and the device to be installed. The device to be installed here includes, but is not limited to, a heat sink.

[0060] In one embodiment, such as Figure 2 , Figure 4 and Figure 6 As shown, the first support arm 42 includes a first connecting portion 421 extending outward from the lower edge of the support body 41 along the left-right direction of the vehicle, a second connecting portion 422 extending forward from the first connecting portion 421 along the front-rear direction of the vehicle, and a third connecting portion 423 extending inward from the second connecting portion 422 along the left-right direction of the vehicle; the second support arm 43 includes a fourth connecting portion 431 extending inward from the front edge of the support body 41 along the left-right direction of the vehicle, a fifth connecting portion 432 extending backward from the fourth connecting portion 431 along the front-rear direction of the vehicle, a sixth connecting portion 433 extending inward from the fifth connecting portion 432 along the left-right direction of the vehicle, a seventh connecting portion 434 extending forward and inward from the sixth connecting portion 433 along the front-rear direction of the vehicle, and an eighth connecting portion 435 extending outward from the seventh connecting portion 434 along the left-right direction of the vehicle; the sixth connecting portion 433 is fixed to the overlapping member 5 by screwing; the third connecting portion 423 and the eighth connecting portion 435 are both used to screw and fix the device to be installed.

[0061] As an example, the first support arm 42 includes a first connecting portion 421, a second connecting portion 422, and a third connecting portion 423 connected in sequence. The first connecting portion 421 extends outward from the lower edge of the support body 41 along the left-right direction of the vehicle. The second connecting portion 422 extends forward from the end of the first connecting portion 421 along the front-rear direction of the vehicle. The third connecting portion 423 extends inward from the end of the second connecting portion 422 along the front-rear direction of the vehicle, so that the first support arm 42 as a whole has a first C-shaped structure with an inward opening. The second support arm 43 includes a fourth connecting part 431, a fifth connecting part 432, a sixth connecting part 433, a seventh connecting part 434, and an eighth connecting part 435 connected in sequence. The fourth connecting part 431 extends inward from the front edge of the support body 41 along the left-right direction of the vehicle, and the fifth connecting part 432 extends backward from the end of the fourth connecting part 431 along the front-rear direction of the vehicle, so that a rearward-opening clearance space is formed between the support body 41, the fourth connecting part 431, and the fifth connecting part 432. The clearance space is used to avoid the overlapping area of ​​the upper beam assembly 2, the mounting plate flange 32, and the bolts (including but not limited to bolts 81), which can ensure installation feasibility. The sixth connecting portion 433 extends inward from the end of the fifth connecting portion 432 along the left-right direction of the vehicle. The seventh connecting portion 434 extends forward and inward from the end of the sixth connecting portion 433 along the front-rear direction of the vehicle. The eighth connecting portion 435 extends outward from the end of the seventh connecting portion 434 along the front-rear direction of the vehicle, so that the second support arm 43 as a whole forms a second C-shaped structure with an outward opening. In this example, the first C-shaped structure and the second C-shaped structure cooperate to accommodate the receiving space for the device to be installed. The seventh connecting portion 434 extends forward and inward from the end of the sixth connecting portion 433 along the front-rear direction of the vehicle to ensure the width of the receiving space it forms.

[0062] In this example, the assembly bracket 4 is provided with a bracket body 41, a longitudinal beam mounting plate 3, and an upper beam assembly 2 arranged along the front-rear direction of the vehicle, which are fixed by bolts (specifically, bolts 81). The bracket body 41, the upper beam assembly 2, and the lap joint 5 are also fixed by bolts (specifically, bolts 82). The sixth connecting part 433 and the lap joint 5 are fixed by bolts (specifically, bolts 83) arranged along the left-right direction of the vehicle. The third connecting part 423 and the eighth connecting part 435 arranged along the left-right direction of the vehicle are used to fix the devices to be installed by bolts (specifically, bolts 84) to ensure the connection stability of the assembly bracket 4.

[0063] In one embodiment, the vehicle body connection structure further includes an energy-absorbing box and a crash beam; the front side of the longitudinal beam mounting plate 3 is connected to the crash beam via the energy-absorbing box; the final assembly bracket 4 is located below the energy-absorbing box.

[0064] As an example, the vehicle body connection structure also includes an energy-absorbing box and a crash beam. The front side of the longitudinal beam mounting plate 3 is connected to the crash beam through the energy-absorbing box. When the vehicle is involved in a small offset collision, the collision force is absorbed by the crash beam and the energy-absorbing box to form an energy-absorbing area before being transferred to the connection between the front longitudinal beam assembly 1 and the upper side beam assembly 2. The longitudinal beam mounting plate 3, the upper side beam assembly 2 and the final assembly bracket 4 are screwed together and fixed by bolts 81, which enhances the connection force at the connection between the three. This ensures that there is no tearing at the connection between the upper side beam assembly 2 and the front longitudinal beam assembly 1, or that the tearing time point is extended if tearing occurs. This can enhance the stability of the vehicle body connection structure without increasing costs. The assembly bracket 4 is located below the energy-absorbing box, so that the bolts 81 connecting the longitudinal beam mounting plate 3, the upper beam assembly 2 and the assembly bracket 4 are also located below the energy-absorbing box, as are the bolts 82 connecting the upper beam assembly 2 and the lap joint 5, in order to avoid the installation of the energy-absorbing box and the anti-collision beam and ensure the feasibility of installation.

[0065] In one embodiment, such as Figure 5 and Figure 6 As shown, the vehicle body connection structure also includes a subframe mounting assembly 6 and a lower connecting plate 7 for the front longitudinal beam channel; the subframe mounting assembly 6 is connected to the lap joint 5; the lower connecting plate 7 for the front longitudinal beam channel is connected to the subframe mounting assembly 6 and the upper side beam assembly 2.

[0066] As an example, the vehicle body connection structure also includes a subframe mounting assembly 6 and a lower connecting plate 7 for the front longitudinal beam channel; the subframe mounting assembly 6 is connected to the lap joint 5 and also to the subframe, so as to connect the lap joint 5 and the subframe through the subframe mounting assembly 6; then the lower connecting plate 7 for the front longitudinal beam channel connects the subframe mounting assembly 6 and the upper side beam assembly 2 (specifically connected to the inner plate 22 of the upper side beam), so that the vehicle body connection structure as a whole forms a cavity structure. When the vehicle is involved in a small offset collision, the cavity structure deforms as a whole to absorb energy, thereby improving the collision energy absorption capacity of the vehicle body connection structure and ensuring the stability of the vehicle body connection structure.

[0067] In one embodiment, the subframe mounting assembly 6 includes a subframe mounting outer plate 61 and a subframe mounting inner plate 62; the subframe mounting outer plate 61 is connected to the lap joint 5 and the lower connecting plate 7 of the front longitudinal beam channel; the subframe mounting inner plate 62 is connected to the lap joint 5 and the subframe mounting outer plate 61.

[0068] As an example, the subframe mounting assembly 6 includes a subframe mounting outer plate 61 and a subframe mounting inner plate 62. The subframe mounting outer plate 61 is connected to the lap joint 5 and the lower connecting plate 7 of the front longitudinal beam channel. The subframe mounting inner plate 62 is located in the space formed by the subframe mounting outer plate 61, the lower connecting plate 7 of the front longitudinal beam channel, the upper side beam assembly 2 and the lap joint 5. The subframe mounting inner plate 62 is connected to the lap joint 5 and the subframe mounting outer plate 61, so that multiple cavity structures are formed between the subframe mounting assembly 6, the lap joint 5, the upper side beam assembly 2 and the lower connecting plate 7 of the front longitudinal beam channel, which helps to improve the collision energy absorption capacity of the vehicle body connection structure.

[0069] In one embodiment, a vehicle is provided, including a radiator and the body connection structure in the above embodiment, wherein the radiator is fixed to the assembly bracket 4 by screws.

[0070] In this embodiment, the longitudinal beam mounting plate 3, the upper beam assembly 2, and the final assembly bracket 4 are screwed together, replacing the traditional welding method between any two of the three components. This saves overall costs, and the screwing connection enhances the connection strength at the joint. The presence of the final assembly bracket 4 also increases the thickness at the joint, ensuring that the connection between the upper beam assembly 2 and the front longitudinal beam assembly 1 does not tear or, if tearing occurs, extends the tear time. This enhances the stability of the vehicle body connection structure without increasing costs. The longitudinal beam mounting plate 3, the upper beam assembly 2, and the final assembly bracket 4 are all screwed together with bolt 81, achieving weight reduction and cost reduction. Furthermore, the radiator is screwed to the final assembly bracket 4, ensuring the stability of the connection between the radiator and the final assembly bracket 4.

[0071] In this application, "multiple" refers to two or more.

[0072] In this application, unless otherwise expressly defined, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0073] The terms “first,” “second,” “third,” “fourth,” etc., in this application (if any) are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.

[0074] In this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, in this application, the character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0075] Unless otherwise specified, all steps in this application may be performed sequentially or randomly. For example, if the method includes steps A and B, it means that the method may include steps A and B performed sequentially, or it may include steps B and A performed sequentially. For example, if the method may also include step C, it means that step C may be added to the method in any order. For example, the method may include steps A, B, and C, or it may include steps A, C, and B, or it may include steps C, A, and B, etc.

[0076] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A vehicle body connection structure, characterized in that, Includes the front longitudinal beam assembly, the upper side beam assembly, the longitudinal beam mounting plate, the final assembly bracket, and the connecting parts; The rear side of the longitudinal beam mounting plate is connected to the front end of the front longitudinal beam assembly, and the front end of the front longitudinal beam assembly and the lower end of the upper beam assembly are connected by the lap joint. The upper side beam assembly includes an outer upper side beam plate and an inner upper side beam plate. The outer upper side beam plate overlaps with the inner upper side beam plate, and the two form an overlap area along the front-rear direction of the vehicle. The longitudinal beam mounting plate, the overlapping area, and the final assembly bracket are screwed together and fixed along the left-right direction of the vehicle. The overlapping component, the overlapping area, and the final assembly bracket are screwed together along the left-right direction of the vehicle.

2. The vehicle body connection structure according to claim 1, characterized in that, The longitudinal beam mounting plate includes a mounting plate body and a mounting plate flange extending forward in the vehicle longitudinal direction from at least a portion of the edge of the mounting plate body. The rear side of the mounting plate body is connected to the front end of the front longitudinal beam assembly; The mounting plate flange, the overlapping area, and the final assembly bracket are fixed by screws.

3. The vehicle body connection structure according to claim 1, characterized in that, The assembly bracket includes a bracket body, a first bracket arm extending outward from one side edge of the bracket body along the left-right direction of the vehicle, and a second bracket arm extending inward from the other side edge of the bracket body along the left-right direction of the vehicle. The bracket body is arranged along the front-rear direction of the vehicle. The longitudinal beam mounting plate, the overlapping area, and the bracket body are fixed by screws; The second support arm is fixed to the lap joint by screws; Both the first support arm and the second support arm are used to screw and fix the device to be installed.

4. The vehicle body connection structure according to claim 3, characterized in that, The first support arm includes a first connecting portion extending outward from the lower edge of the support body along the left-right direction of the vehicle, a second connecting portion extending forward from the first connecting portion along the front-rear direction of the vehicle, and a third connecting portion extending inward from the second connecting portion along the left-right direction of the vehicle. The second support arm includes a fourth connecting portion extending inward from the front edge of the support body along the left-right direction of the vehicle, a fifth connecting portion extending backward from the fourth connecting portion along the front-rear direction of the vehicle, a sixth connecting portion extending inward from the fifth connecting portion along the left-right direction of the vehicle, a seventh connecting portion extending forward and inward from the sixth connecting portion along the front-rear direction of the vehicle, and an eighth connecting portion extending outward from the seventh connecting portion along the left-right direction of the vehicle. The sixth connecting part is fixed to the overlapping member by screw connection; Both the third connecting part and the eighth connecting part are used to screw and fix the device to be installed.

5. The vehicle body connection structure according to claim 1, characterized in that, The vehicle body connection structure also includes an energy-absorbing box and a crash beam; The front side of the longitudinal beam mounting plate is connected to the anti-collision beam through the energy-absorbing box; The assembly bracket is located below the energy-absorbing box.

6. The vehicle body connection structure according to claim 1, characterized in that, The vehicle body connection structure also includes a subframe mounting assembly and a lower connecting plate for the front longitudinal beam channel; The subframe mounting assembly is connected to the connecting piece; The lower connecting plate of the front longitudinal beam channel is connected to the subframe mounting assembly and the upper side beam assembly.

7. The vehicle body connection structure according to claim 1, characterized in that, The subframe mounting assembly includes a subframe mounting outer plate and a subframe mounting inner plate; The subframe mounting plate is connected to the overlapping member and the lower connecting plate of the front longitudinal beam channel; The subframe mounting inner panel is connected to the connecting piece and the subframe mounting outer panel.

8. A vehicle, characterized in that, It includes a radiator and a vehicle body connection structure according to any one of claims 1-7, wherein the radiator is fixed to the assembly bracket by screws.

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