Vehicle cross beam assembly and vehicle

Abstract

The application relates to a vehicle cross beam assembly; comprising a first beam plate, a second beam plate and a reinforcing beam, the second beam plate is arranged on the first beam plate and is assembled with the first beam plate to form a first cavity, the reinforcing beam is arranged between the first beam plate and the second beam plate, and the reinforcing beam has a second cavity; the vehicle cross beam assembly of the application improves the rigidity of the vehicle cross beam assembly by increasing the number of cavities, that is, by increasing the second cavity in the first cavity, the cross-sectional area of the vehicle cross beam assembly structure is greatly increased compared with a traditional vehicle cross beam structure, the bending rigidity and the torsional rigidity of the vehicle cross beam assembly to the whole vehicle are improved, and the rigidity and the strength of the vehicle cross beam assembly are enhanced; in addition, since the closed cavity has excellent structural stability, the connecting strength and the rigidity between the reinforcing beam and the second beam plate can be effectively ensured.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of automobile technology, in particular to a vehicle cross beam assembly and a vehicle. BACKGROUND

[0002] The roof cross beam is used to connect the side wall and the roof of the vehicle body, and is one of the important components of the vehicle. The roof cross beam not only has a great influence on the torsional stiffness performance index of the vehicle, but also affects the noise perception of the passengers.

[0003] The traditional roof cross beam comprises a lower beam plate and an upper beam plate, and has a cavity structure between the lower beam plate and the upper beam plate. While meeting the strength requirement, the larger the size of the cavity is, the higher the modal of the roof cross beam is. During driving, the vehicle is prone to vibration due to excitation from the road surface and the powertrain, thereby causing abnormal noise. The roof cross beam with high modal can reduce abnormal noise.

[0004] However, in order to expand the rear view and head space without changing the height of the vehicle, the existing vehicle compresses the size of the cavity of the roof cross beam, thereby reducing the modal frequency of the roof cross beam, causing the passengers to perceive abnormal noise caused by resonance during driving, and affecting the comfort of the passengers during driving. SUMMARY

[0005] Therefore, it is necessary to provide a vehicle cross beam assembly and a vehicle to solve the problem of reducing the modal frequency of the roof cross beam caused by compressing the size of the cavity of the roof cross beam.

[0006] A vehicle cross beam assembly comprises:

[0007] a first beam plate;

[0008] a second beam plate arranged on the first beam plate and assembled with the first beam plate to form a first cavity;

[0009] a reinforcing beam arranged between the first beam plate and the second beam plate, and having a second cavity in the reinforcing beam.

[0010] The vehicle cross beam assembly increases the stiffness of the vehicle cross beam assembly by increasing the number of cavities, that is, by increasing the second cavity in the first cavity, the cross-sectional area of the vehicle cross beam assembly structure is greatly increased compared with the traditional vehicle cross beam structure, the bending stiffness and torsional stiffness of the vehicle cross beam assembly to the vehicle are improved, and the stiffness and strength of the vehicle cross beam assembly are enhanced. In addition, since the closed cavity has excellent structural stability, the connection strength and stiffness between the reinforcing beam and the second beam plate can be effectively ensured.

[0011] In one embodiment, the second cavity penetrates the reinforcing beam along the axial direction of the first cavity.

[0012] In the above embodiments, the reinforcing beam can be a hollow structure, which can improve rigidity and strength while ensuring the vehicle's lightweight design.

[0013] In one embodiment, the reinforcing beam is disposed on and connected to the second beam plate.

[0014] In the above embodiments, the structural stability between the reinforcing beam and the second beam plate is ensured by connecting the reinforcing beam to the second beam plate.

[0015] In one embodiment, the bottom surface of the reinforcing beam abuts against the second beam plate, and the bottom surface of the reinforcing beam is completely located on the second beam plate.

[0016] In the above embodiment, by making the second beam plate contact the entire bottom surface of the reinforcing beam, the structural stability between the reinforcing beam and the second beam plate is further ensured.

[0017] In one embodiment, the length of the reinforcing beam is the same as the length of the second beam plate.

[0018] In the above embodiments, the contact area between the second beam and the reinforcing beam can be maximized, thereby further ensuring the structural stability between the reinforcing beam and the second beam.

[0019] In one embodiment, the reinforcing beam has a notch on the side facing away from the second beam plate.

[0020] In the above embodiment, a rivet nut or bolt can be placed inside the second cavity through a notch so that the second beam plate and the reinforcing beam can be fixedly connected by the rivet nut and bolt.

[0021] A vehicle includes an outer side panel, an inner side panel, and the aforementioned vehicle crossbeam assembly, wherein a first beam plate and a second beam plate are located between the outer side panel and the inner side panel, and the first beam plate and the second beam plate are respectively connected to the outer side panel and the inner side panel.

[0022] In the above embodiments, the first beam plate can be fixed to the vehicle body by the outer side panel, and the second beam plate can be fixed to the vehicle body by the inner side panel. By positioning the first beam plate and the second beam plate between the outer side panel and the inner side panel, the structural stability between the first beam plate and the second beam plate and the outer side panel and the inner side panel is ensured.

[0023] In one embodiment, the inner side panel includes a first connecting segment, a first bending segment, a third connecting segment, a second bending segment, and a second connecting segment connected in sequence. The top surfaces of the first connecting segment and the second connecting segment are connected to the bottom surface of the second beam plate, and the top surface of the third connecting segment is connected to the bottom surface of the second beam plate.

[0024] In the above embodiments, by connecting the top surfaces of the first connecting segment and the second connecting segment to the bottom surface of the second beam plate, and connecting the top surface of the third connecting segment to the bottom surface of the second beam plate, a larger contact area is ensured between the inner side panel and the second beam plate, thereby enhancing the connection stability between the inner side panel and the second beam plate.

[0025] In one embodiment, there is a gap between the first bent section and the second beam plate of the inner side panel, and there is a gap between the second bent section and the second beam plate.

[0026] In the above embodiment, the gaps between the first bending section and the second beam plate, and the gaps between the second bending section and the second beam plate, allow the inner side panel and the second beam plate to cooperate to form two third cavities. These third cavities can absorb collision energy and resist deformation, thereby improving structural rigidity.

[0027] In one embodiment, the inner side panel has a positioning opening, and the second beam plate has a bending piece that passes through the positioning opening. In the above embodiment, by passing the bending piece through the positioning opening, the positioning between the second beam plate and the inner side panel is completed, so as to fix the second beam plate and the inner side panel. Attached Figure Description

[0028] Figure 1 This is a structural schematic diagram of the vehicle crossbeam assembly according to some embodiments of this application;

[0029] Figure 2 for Figure 1 AA section view in the middle;

[0030] Figure 3 for Figure 1 BB cross-section view in the middle;

[0031] Figure 4 This is a schematic diagram of the structure of the reinforcing beam in some embodiments of this application;

[0032] Figure 5 This is another structural schematic diagram of the reinforcing beam in some embodiments of this application;

[0033] Figure 6 This is a partial structural diagram of the inner side panel and the second beam plate in some embodiments of this application.

[0034] Figure label:

[0035] 1. First beam / slab;

[0036] 2. Second beam slab;

[0037] 21. First connecting part; 22. Second connecting part; 23. Third connecting part; 24. First bending part; 25. Second bending part;

[0038] 26. Bending piece;

[0039] 3. Strengthen the beam;

[0040] 31. Second cavity;

[0041] 32. Gap;

[0042] 33. Preset port;

[0043] 34. Use tools to enlarge the hole;

[0044] 4. First cavity;

[0045] 5. Side outer panels;

[0046] 6. Inner side panels;

[0047] 61. First connecting segment; 62. Second connecting segment; 63. Third connecting segment; 64. First bending segment; 65. Second bending segment;

[0048] 66. The third cavity;

[0049] 67. Positioning port;

[0050] 7. Rivet nuts;

[0051] 8. Bolts. Detailed Implementation

[0052] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of the present invention. However, the present invention can be practiced in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0053] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0054] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0055] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0056] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0057] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0058] See Figures 1-3An embodiment of the present invention provides a vehicle crossbeam assembly, including a first beam plate 1, a second beam plate 2, and a reinforcing beam 3. The second beam plate 2 and the first beam plate 1 cooperate to form a first cavity 4, which is used to improve the modal characteristics of the roof crossbeam. The reinforcing beam 3 is disposed within the first cavity 4. According to the stiffness formula: k = E * A0 (where E is the elastic modulus of the metal, and A0 is the cross-sectional area of ​​the part), it is known that when the elastic modulus of the metal remains constant, the larger the cross-sectional area of ​​the part, the greater its stiffness. Therefore, by providing a reinforcing beam 3 within the first cavity 4, the stiffness of the vehicle crossbeam assembly can be increased, thereby improving the modal characteristics of the roof crossbeam. The reinforcing beam 3 has a closed second cavity 31. Since the closed cavity can absorb collision energy and resist deformation, it improves structural stiffness. Therefore, through the excellent structural stability of the second cavity 31, the connection strength and stiffness between the reinforcing beam 3 and the first beam plate 1 and the second beam plate 2 can be effectively guaranteed, thereby ensuring the modal characteristics of the roof crossbeam.

[0059] See Figure 2 In a specific configuration, the second beam plate 2 is mounted on the first beam plate 1 and assembled with the first beam plate 1 to form a first cavity 4. The reinforcing beam 3 is mounted between the first beam plate 1 and the second beam plate 2, and the reinforcing beam 3 has a second cavity 31 inside.

[0060] More specifically, the second beam plate 2 includes a first connecting portion 21, a second connecting portion 22, a third connecting portion 23, a first bending portion 24, and a second bending portion 25. The two ends of the first bending portion 24 are connected to the first connecting portion 21 and the third connecting portion 23, respectively. The two ends of the second bending portion 25 are connected to the second connecting portion 22 and the third connecting portion 23, respectively. The top surfaces of both the first connecting portion 21 and the second connecting portion 22 are connected to the bottom surface of the first beam plate 1, thereby connecting the second beam plate 2 to the first beam plate 1. A gap exists between the top surface of the third connecting portion 23 and the bottom surface of the first beam plate 1, allowing the first cavity 4 to be formed by the cooperation of the third connecting portion 23, the first bending portion 24, the second bending portion 25, and the first beam plate 1.

[0061] The reinforcing beam 3 is located on the top surface of the third connecting part 23 and has a gap between it and the bottom surface of the first beam plate 1, so that the impact force on the reinforcing beam 3 will not act on the first beam plate 1, and the first beam plate 1 will not affect the absorption of impact energy by the second cavity 31 of the reinforcing beam 3.

[0062] The vehicle crossbeam assembly of this application improves its stiffness by increasing the number of cavities. Specifically, by adding a second cavity 31 within the first cavity 4, the crossbeam assembly structure has a significantly increased cross-sectional area compared to traditional automotive crossbeam structures, thereby improving the bending and torsional stiffness of the crossbeam assembly relative to the entire vehicle, and enhancing the overall stiffness and strength of the crossbeam assembly. Furthermore, since the enclosed cavities can absorb collision energy and resist deformation, structural stiffness is improved. Therefore, the excellent structural stability of the second cavity 31 effectively ensures the connection strength and stiffness between the reinforcing beam 3 and the first beam plate 1 and the second beam plate 2, thus guaranteeing the modal stability of the roof crossbeam.

[0063] In one embodiment, the second cavity 31 penetrates the reinforcing beam 3 along the axial direction of the first cavity 4. The axial direction of the first cavity 4 is parallel to... Figure 1 The lines connecting the adjacent inner panels 6 on both sides are parallel. Furthermore, the axial direction of the second cavity 31 is parallel to the axial direction of the first cavity 4. By making the reinforcing beam 3 a hollow structure, the reinforcing beam 3 can improve rigidity and strength while ensuring vehicle lightweighting. At the same time, by maximizing the volume occupied by the second cavity 31 in the reinforcing beam 3, the energy absorption effect of the reinforcing beam 3 due to the second cavity 31 can be maximized.

[0064] In one embodiment, a reinforcing beam 3 is disposed on and connected to the second beam plate 2. Specifically, the bottom surface of the reinforcing beam 3 abuts against the top surface of the third connecting portion 23. By abutting the reinforcing beam 3 against the second beam plate 2, the structural stability between the reinforcing beam 3 and the second beam plate 2 is ensured.

[0065] In one embodiment, the bottom surface of the reinforcing beam 3 abuts against the second beam plate 2, and the bottom surface of the reinforcing beam 3 is completely located on the second beam plate 2. Specifically, the bottom surface of the reinforcing beam 3 completely covers the top surface of the third connecting portion 23. By making the entire bottom surface of the second beam plate 2 in contact with the second beam plate 2, the structural stability between the reinforcing beam 3 and the second beam plate 2 is further ensured.

[0066] The reinforcing beam 3 and the second beam plate 2 can be connected by spot welding, self-piercing riveting, or bolting. In this application, the reinforcing beam 3 and the second beam plate 2 are connected by spot welding and reinforced by bolting. Using a combination of spot welding and bolting ensures connection strength. Relying solely on bolting to guarantee connection strength would require numerous rivet nuts 7 and bolts 8, making assembly cumbersome. Spot welding alone cannot guarantee the fit between the second beam plate 2 and the reinforcing beam 3, affecting connection strength. That is, bolting compresses the gap between the second beam plate 2 and the reinforcing beam 3, allowing them to fit together more closely, effectively improving structural strength and reducing noise risk from the vehicle crossbeam assembly. Furthermore, the second beam plate 2 and the reinforcing beam 3 can have multiple weld points.

[0067] In one embodiment, the length of the reinforcing beam 3 is the same as the length of the second beam plate 2. By maximizing the contact area between the second beam plate 2 and the reinforcing beam 3, the structural stability between the reinforcing beam 3 and the second beam plate 2 is further ensured. Specifically, the long side of the reinforcing beam 3 is parallel to the axis of the first cavity 4, and the wide side of the reinforcing beam 3 is perpendicular to the axis of the first cavity 4. The long side of the second beam plate 2 is parallel to the axis of the first cavity 4, and the wide side of the second beam plate 2 is perpendicular to the axis of the first cavity 4. The length of the reinforcing beam 3 is the length of its long side, and the length of the second beam plate 2 is the length of its long side.

[0068] Specifically, the length of the first beam plate 1 is greater than the length of the second beam plate 2, and the width of the first beam plate 1 is greater than the width of the second beam plate 2. This is so that after the vehicle crossbeam assembly is installed with the vehicle body, the first beam plate 1 can shield and protect the second beam plate 2 located below it. The length of the reinforcing beam 3 is the same as the length of the third connecting part 23, and the width of the reinforcing beam 3 is less than the width of the third connecting part 23. This is so that the contact area between the second beam plate 2 and the reinforcing beam 3 in the length direction can be maximized, resulting in better structural stability between the reinforcing beam 3 and the second beam plate 2.

[0069] See Figure 5 In one embodiment, the reinforcing beam 3 has a notch 32 on its side facing away from the second beam plate 2. A rivet nut 7 or bolt 8 is placed inside the second cavity 31 through the notch 32 so that the second beam plate 2 and the reinforcing beam 3 can be fixedly connected by the rivet nut 7 and bolt 8.

[0070] See Figure 2 and Figure 3 Specifically, the bottom surface of the reinforcing beam 3 is connected to the top surface of the second beam plate 2. Notches 32 are provided on both axial sides of the top surface of the reinforcing beam 3, and both notches 32 communicate with the second cavity 31. When fixing the second beam plate 2 and the reinforcing beam 3 using rivet nuts 7 and bolts 8, the bolt shanks of the bolts 8 can be sequentially passed through the bottom surfaces of the second beam plate 2 and the reinforcing beam 3. The rivet nuts 7 are placed in the second cavity 31 through the notches 32 and screwed onto the bolt shanks of the bolts 8. To absorb the influence of matching tolerances, preset openings 33 are provided on the bottom surfaces of both the second beam plate 2 and the reinforcing beam 3 for the bolt shanks of the bolts 8 to pass through.

[0071] Furthermore, considering weight and cost, the reinforcing beam 3 can adopt a U-shaped, S-shaped, I-shaped, or other irregular closed structure. If the goal is to significantly improve the rigidity and strength of the vehicle crossbeam assembly, the number of second cavities 31 within the reinforcing beam 3 can be increased accordingly; conversely, if the goal is to prioritize vehicle lightweighting, the number of second cavities 31 within the reinforcing beam 3 can be reduced accordingly. During production, the number of second cavities 31 within the reinforcing beam 3 can be adjusted according to specific requirements to select the most suitable structure.

[0072] For example, see Figure 4 and Figure 5 In some embodiments, the reinforcing beam 3 has a second cavity 31, and a notch 32 is provided on the top surface of the reinforcing beam 3 and communicates with the second cavity 31. By providing a second cavity 31, the reinforcing beam 3 can be a hollow structure, thereby ensuring the vehicle's lightweight while improving rigidity and strength.

[0073] See Figure 2 and Figure 3 In other embodiments, the reinforcing beam 3 has at least two second cavities 31, and a notch 32 is provided on the top surface of the reinforcing beam 3 and communicates with one of the second cavities 31. By providing two or more second cavities 31, the reinforcing beam 3 can be a hollow structure with a large cross-sectional area, thereby improving the rigidity and strength of the structure.

[0074] In addition, see Figure 5 The top surface of the reinforcing beam 3 is provided with a tool reaming hole 34 to facilitate welding operations by the welding torch through the tool reaming hole 34. Specifically, multiple tool reaming holes 34 are provided, and the multiple tool reaming holes 34 are arranged along the axial direction of the second cavity 31 on the top surface of the reinforcing beam 3.

[0075] See Figure 1 and Figure 3 This application also provides a vehicle comprising an outer side panel 5, an inner side panel 6, and the aforementioned vehicle crossbeam assembly. A first beam plate 1 and a second beam plate 2 are located between the outer side panel 5 and the inner side panel 6, and are respectively connected to the outer side panel 5 and the inner side panel 6. The outer side panel 5 can be used to fix the first beam plate 1 to the vehicle body, and the inner side panel 6 can be used to fix the second beam plate 2 to the vehicle body, thus completing the fixation of the first beam plate 1 and the second beam plate 2 to the vehicle body. Furthermore, by positioning both the first beam plate 1 and the second beam plate 2 between the outer side panel 5 and the inner side panel 6, the structural stability between the first beam plate 1 and the second beam plate 2 and the outer side panel 5 and the inner side panel 6 is ensured.

[0076] In actual installation, both the outer side panel 5 and the inner side panel 6 are part of the vehicle body. There are two outer side panels 5 and two inner side panels 6, located on the left and right sides of the vehicle body respectively. When the vehicle crossbeam assembly is connected to the left and right sides of the vehicle body, the axial sides of the first beam plate 1 are connected to the two outer side panels 5 respectively, and the axial sides of the second beam plate 2 are connected to the two inner side panels 6 respectively. The connection method can be bolted, welded, or other connection methods; this application uses a combination of welding and bolting.

[0077] More specifically, the inner side panel 6 is located inside the outer side panel 5, a portion of the top surface of the first beam plate 1 is connected to a portion of the bottom surface of the outer side panel 5, and a portion of the bottom surface of the second beam plate 2 is connected to a portion of the top surface of the inner side panel 6.

[0078] See Figure 3 In one embodiment, the inner side panel 6 includes a first connecting segment 61, a second connecting segment 62, a third connecting segment 63, a first bending segment 64, and a second bending segment 65. The two ends of the first bending segment 64 are connected to the first connecting segment 61 and the third connecting segment 63, respectively. The two ends of the second bending segment 65 are connected to the second connecting segment 62 and the third connecting segment 63, respectively. The top surfaces of both the first connecting segment 61 and the second connecting segment 62 abut against the bottom surface of the second beam plate 2, thereby connecting the inner side panel 6 to the second beam plate 2. The top surface of the third connecting segment 63 fits against the bottom surface of the second beam plate 2, enhancing the connection stability between the inner side panel 6 and the second beam plate 2. A gap exists between the first bending segment 64 and the second beam plate 2, and a gap also exists between the second bending segment 65 and the second beam plate 2, allowing the inner side panel 6 to fit with the second beam plate 2 to form two third cavities 66. These third cavities 66 can absorb collision energy and resist deformation, improving structural stiffness.

[0079] Specifically, see Figure 2 and Figure 3 The second beam plate 2 includes a first connecting section 21, a first bending section 24, a third connecting section 23, a second bending section 25, and a second connecting section 22 connected in sequence. The top surface of the first connecting section 61 abuts against the bottom surface of the first connecting section 21, the top surface of the second connecting section 62 abuts against the bottom surface of the second connecting section 22, and the top surface of the third connecting section 63 abuts against the bottom surface of the third connecting section 23, so as to provide good connection stability between the inner side panel 6 and the second beam plate 2. The first cavity 4 is formed by the first beam plate 1 and the third connecting section 63, the first bending section 64, and the second bending section 65. There is a gap between the first bending section 64 and the first bending section 24, and there is a gap between the second bending section 65 and the second bending section 25, so that the inner side panel 6 can cooperate with the second beam plate 2 to form two third cavities 66. The third cavities 66 can absorb collision energy and resist deformation, thereby improving structural stiffness.

[0080] In addition, see Figure 6 The inner side panel 6 is provided with a positioning opening 67, and the second beam plate 2 is provided with a bending piece 26, which passes through the positioning opening 67. That is, when connecting and fixing the inner side panel 6 and the second beam plate 2, the positioning between the second beam plate 2 and the inner side panel 6 can be completed by passing the bending piece 26 through the positioning opening 67, so as to fix the second beam plate 2 and the inner side panel 6.

[0081] Specifically, the bent piece 26 is connected to the wide side of the second beam plate 2. The wide side of the second beam plate 2 is a side perpendicular to the axial direction of the first cavity 4. During installation, the wide side of the second beam plate 2 is located on the inner side panel 6, and the long side of the second beam plate 2 is located between two adjacent inner side panels 6.

[0082] See Figure 3 In one embodiment, the inner side panel 6, the second beam plate 2, and the reinforcing beam 3 can be connected by spot welding, self-piercing riveting, or bolting. In this application, the inner side panel 6, the second beam plate 2, and the reinforcing beam 3 are connected by spot welding and reinforced by bolting. Using a combination of spot welding and bolting ensures connection strength. If bolting alone is used to guarantee connection strength, many rivet nuts 7 and bolts 8 are required, making assembly cumbersome. If only spot welding is used, the fit between the inner side panel 6, the second beam plate 2, and the reinforcing beam 3 cannot be guaranteed, affecting connection strength.

[0083] Specifically, the inner side panel 6, the second beam plate 2, and the reinforcing beam 3 are fixedly connected by rivet nuts 7 and bolts 8, with the rivet nuts 7 and bolts 8 threaded together. When the inner side panel 6, the second beam plate 2, and the reinforcing beam 3 are fixed by the rivet nuts 7 and bolts 8, the gaps between the inner side panel 6, the second beam plate 2, and the reinforcing beam 3 can be compressed, thereby allowing the inner side panel 6, the second beam plate 2, and the reinforcing beam 3 to fit together, effectively improving structural strength and reducing the noise risk of the vehicle crossbeam assembly.

[0084] In one embodiment, the first beam 1, the second beam 2, and the reinforcing beam 3 are all made of aluminum alloy. Aluminum profiles are advantageous in ensuring vehicle lightweighting while improving rigidity and strength, significantly reducing the overall vehicle weight. That is, since aluminum alloy is lighter than steel, using aluminum alloy for the first beam 1, the second beam 2, and the reinforcing beam 3 helps ensure vehicle lightweighting and achieves overall vehicle weight reduction.

[0085] Furthermore, both the first beam plate 1 and the second beam plate 2 adopt a stamped single-plate structure. The stamping structure can effectively ensure the matching accuracy of local features and facilitate the connection of the first beam plate 1 and the second beam plate 2 with the surrounding overlapping parts. Moreover, the connection facilitates the sealing function with the adjacent parts (the surrounding overlapping parts), thereby ensuring the waterproof performance of the beam's interior.

[0086] The reinforcing beam 3 is made of aluminum alloy using an extrusion process. The extrusion process facilitates the creation of a closed second cavity 31 within the reinforcing beam 3.

[0087] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0088] The above embodiments merely illustrate several implementation methods of the present invention, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this invention patent should be determined by the appended claims.

Claims

1. A vehicle crossbeam assembly, characterized in that, include: First beam (1); The second beam plate (2) is disposed on the first beam plate (1) and assembled with the first beam plate (1) to form a first cavity (4); A reinforcing beam (3) is disposed between the first beam plate (1) and the second beam plate (2), and the reinforcing beam (3) has a second cavity (31). The reinforcing beam (3) has a notch (32) on the side facing away from the second beam plate (2); The reinforcing beam (3) is connected to the second beam plate (2) by spot welding and reinforced by bolting.

2. The vehicle crossbeam assembly according to claim 1, characterized in that, Along the axial direction of the first cavity (4), the second cavity (31) penetrates the reinforcing beam (3).

3. The vehicle crossbeam assembly according to claim 1, characterized in that, The reinforcing beam (3) is mounted on the second beam plate (2) and connected to the second beam plate (2).

4. The vehicle crossbeam assembly according to claim 3, characterized in that, The bottom surface of the reinforcing beam (3) abuts against the second beam plate (2), and the bottom surface of the reinforcing beam (3) is completely located on the second beam plate (2).

5. The vehicle crossbeam assembly according to claim 3, characterized in that, The length of the reinforcing beam (3) is the same as the length of the second beam plate (2).

6. A vehicle, characterized in that, The vehicle includes an outer side panel (5), an inner side panel (6), and a vehicle crossbeam assembly as described in any one of claims 1-5, wherein the first beam plate (1) and the second beam plate (2) are located between the outer side panel (5) and the inner side panel (6), and the first beam plate (1) and the second beam plate (2) are respectively connected to the outer side panel (5) and the inner side panel (6).

7. The vehicle according to claim 6, characterized in that, The inner side panel (6) includes a first connecting section (61), a first bending section (64), a third connecting section (63), a second bending section (65), and a second connecting section (62) connected in sequence. The top surfaces of the first connecting section (61) and the second connecting section (62) are connected to the bottom surface of the second beam plate (2), and the top surface of the third connecting section (63) is connected to the bottom surface of the second beam plate (2).

8. The vehicle according to claim 7, characterized in that, There is a gap between the first bent section (64) and the second beam plate (2) of the inner side panel (6), and there is a gap between the second bent section (65) and the second beam plate (2).

9. The vehicle according to claim 6, characterized in that, The inner side panel (6) is provided with a positioning opening (67), and the second beam plate (2) is provided with a bending piece (26), which passes through the positioning opening (67).

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