Top cover cross beam structure and vehicle

Abstract

The utility model relates to the technical field of vehicle bodies, and provides a roof beam structure and a vehicle. The top cover cross beam structure comprises a cross beam inner plate, a cross beam outer plate arranged above the cross beam inner plate and a cross beam reinforcing plate arranged below the cross beam inner plate. A first protruding part protruding towards one side of the cross beam outer plate is arranged on the cross beam inner plate, the first protruding part is arranged in the left-right direction of the whole vehicle and abuts against the cross beam outer plate, and first cavities formed in the front side and the rear side of the first protruding part respectively are formed between the cross beam inner plate and the cross beam outer plate. A second cavity is formed between the cross beam reinforcing plate and the cross beam inner plate, and the first cavity and the second cavity on the two sides are arranged in the shape of a Chinese character'pin 'when seen from the left-right direction of the whole vehicle. According to the top cover cross beam structure, the number of parts can be reduced, die development cost can be reduced, light-weight design can be achieved, the overall rigidity and the Z-direction supporting effect of the structure can be improved, and therefore the quality of a whole vehicle can be improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of vehicle body, especially relates to a roof cross beam structure, simultaneously, the utility model relates to a vehicle with the roof cross beam structure in the vehicle body. BACKGROUND

[0002] The roof front cross beam structure is an important component of the vehicle body, which is usually located at the front of the roof of the vehicle body and the area above the head of the driver, and the left and right ends are connected with the left and right side wall assemblies, which plays an extremely important role in the rigidity and strength of the vehicle body, especially in the detachable roof vehicle model, the structural performance requirement of the roof front cross beam structure is more strict. However, the roof cross beam structure of the existing vehicle still has problems such as too many parts, insufficient lightweight, weak structural rigidity and the like, which is not conducive to the improvement of the overall performance of the structure and the quality of the whole vehicle. SUMMARY

[0003] Therefore, the utility model aims at providing a roof cross beam structure which is beneficial to lightweight design and improvement of structural rigidity.

[0004] To achieve the above-mentioned purpose, the technical scheme of the utility model is as follows:

[0005] A roof cross beam structure, comprising a cross beam inner plate, a cross beam outer plate arranged above the cross beam inner plate, and a cross beam reinforcing plate arranged below the cross beam inner plate.

[0006] A first protruding part protruding to one side of the cross beam outer plate is arranged on the cross beam inner plate, the first protruding part is arranged along the left-right direction of the whole vehicle, abuts against the cross beam outer plate, and a first cavity is formed between the cross beam inner plate and the cross beam outer plate and arranged on the front and rear sides of the first protruding part.

[0007] A second cavity is formed between the cross beam reinforcing plate and the cross beam inner plate, and from the left-right direction of the whole vehicle, the first cavities and the second cavity on both sides are arranged in the shape of a Chinese character 'pin'.

[0008] Further, the front side edge of the cross beam reinforcing plate is connected with the front edge of the cross beam inner plate, and the rear side edge of the cross beam reinforcing plate is located below the first cavity on the rear side and connected to the cross beam inner plate.

[0009] Further, a second protruding part protruding to one side of the cross beam outer plate is arranged on the cross beam inner plate, the second protruding part is located on the front side of the first protruding part, and the first cavity on the front side is located between the first protruding part and the second protruding part.

[0010] Further, the cross beam reinforcing plate is provided with a third protruding part protruding into the second cavity, and the third protruding part and the first cavity on the front side are arranged in correspondence with each other.

[0011] Further, the cross beam inner plate is provided with a first boss, the third protruding part is provided with a second boss arranged in correspondence with the first boss, and the first boss and the second boss abut together.

[0012] Further, the first boss and the second boss are both a plurality of bosses arranged in correspondence with each other along the left-right direction of the whole vehicle.

[0013] Further, the cross beam inner plate is provided with a first reinforcing rib located in the first cavity on the rear side; the front end of the first reinforcing rib is connected with the first protruding part, and the rear end of the first reinforcing rib extends to the rear edge of the cross beam inner plate.

[0014] Further, the first reinforcing rib is a plurality of reinforcing ribs arranged in correspondence with each other along the left-right direction of the whole vehicle; the cross beam inner plate is provided with a second reinforcing rib protruding to one side of the cross beam reinforcing plate, and the left and right sides of at least part of the first reinforcing rib are provided with the second reinforcing rib.

[0015] Further, the first protruding part is provided with a glue groove, and the glue groove is used for arranging structural glue connecting the cross beam inner plate and the cross beam outer plate.

[0016] Compared with the prior art, the roof cross beam structure has the following advantages:

[0017] The roof cross beam structure comprises a cross beam inner plate, a cross beam outer plate and a cross beam reinforcing plate, and the first cavity and the second cavity arranged on the front and rear sides of the first protruding part are designed in a "pin" shape from the left-right direction of the whole vehicle, which not only reduces the use of parts, reduces the development cost of the mold and realizes lightweight design, but also improves the overall rigidity of the structure, and the Z-direction supporting effect of the cross beam outer plate is improved by arranging the first protruding part, thereby improving the structural performance of the roof cross beam structure and the quality of the whole vehicle.

[0018] In addition, the front side edge of the cross beam reinforcing plate is connected with the front edge of the cross beam inner plate, and the rear side edge of the cross beam reinforcing plate is located below the first cavity on the rear side and is connected with the cross beam inner plate, which can improve the structural rigidity of the front part of the roof cross beam structure to meet the local rigidity and collision requirements.

[0019] Secondly, by setting the third protruding part, and the third protruding part and the first cavity on the front side are arranged in correspondence with each other, the cross-sectional area of the middle part of the second cavity can be tightened to be similar to a calabash from the left and right directions of the whole vehicle, so that the roof cross beam structure has better rigidity corresponding to the regions on the front and back sides of the second cavity, and the roof cross beam structure is easier to leak during coating, and has better process performance. By setting the first boss and the second boss abutting together, and the first boss and the second boss are both a plurality of bosses arranged in the left and right directions of the whole vehicle, the overall rigidity of the roof cross beam structure and the Z-direction support effect can be improved.

[0020] In addition, by setting the first reinforcing rib, and the first reinforcing rib is connected between the first protruding part and the rear edge of the inner plate of the cross beam, the local rigidity of the inner plate of the cross beam can be improved, and the overall rigidity of the roof cross beam structure and the Z-direction support effect can be improved. The first reinforcing rib is arranged as a plurality of reinforcing ribs arranged in the left and right directions of the whole vehicle, and the left and right sides of at least part of the first reinforcing rib are provided with the second reinforcing rib, so that the overall rigidity of the roof cross beam structure and the Z-direction support effect can be further improved. The setting of the second reinforcing rib can also change the connection path of the rear side edge of the cross beam reinforcing plate and the inner plate of the cross beam, increase the connection area, and further enhance the connection effect. By setting the glue groove to accommodate the structural glue connecting the inner plate of the cross beam and the outer plate of the cross beam, the inner plate of the cross beam is connected and supports the outer plate of the cross beam. The structure design is reasonable, the arrangement of the structural glue is facilitated, the contact stress between the two is buffered, and deformation caused by strong connection is avoided.

[0021] Another purpose of the utility model is to provide a vehicle, the vehicle body of the vehicle is provided with the roof cross beam structure as described above.

[0022] The vehicle body of the vehicle is provided with the roof cross beam structure as described above, the structural rigidity of the roof cover area of the vehicle body can be improved, the number of parts used is small, the cost can be reduced, the lightweight design can be realized, and the structural performance of the whole vehicle can be improved. ACCURACY

[0023] The drawings that form part of the utility model are used to provide further understanding of the utility model, the illustrative embodiments of the utility model and the description thereof are used to explain the utility model, and do not constitute undue limitation on the utility model. In the drawings:

[0024] Figure 1 The overall structure schematic view of the roof cross beam structure of the utility model embodiment is shown in the figure;

[0025] Figure 2 And Figure 3 The structure in other views is shown in the figure; Figure 1

[0026] Figure 4 ​For Figure 3 Cross-sectional view in A-A direction;

[0027] Figure 5 For Figure 3 Cross-sectional view in B-B direction;

[0028] Figure 6 Structure schematic view of the transverse beam inner plate and the transverse beam reinforcing plate during assembly according to the embodiment of the present application;

[0029] Figure 7 For Figure 6 Structure schematic view of the structure shown in the figure from another perspective;

[0030] Figure 8 For Figure 7 Enlarged view of A in the figure;

[0031] Figure 9 Structure schematic view of the transverse beam inner plate according to the embodiment of the present application;

[0032] Figure 10 Structure schematic view of the transverse beam outer plate according to the embodiment of the present application;

[0033] Figure 11 Structure schematic view of the transverse beam reinforcing plate according to the embodiment of the present application;

[0034] Explanation of reference signs:

[0035] 1, transverse beam outer plate; 11, front side connecting edge; 12, rear side connecting edge; 13, left side connecting edge; 14, right side connecting edge;

[0036] 2, transverse beam inner plate; 21, first protruding part; 211, glue containing groove; 22, second protruding part; 23, front edge; 24, rear edge; 25, left edge; 26, right edge; 27, first boss; 28, first reinforcing rib; 29, second reinforcing rib;

[0037] 3, transverse beam reinforcing plate; 31, front side edge; 32, rear side edge; 33, third protruding part; 331, second boss;

[0038] 4, first cavity; 5, second cavity. DETAILED DESCRIPTION

[0039] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict.

[0040] In the following description, for purposes of explanation and not limitation, specific details are set forth such as particular architectures, techniques, etc. in order to provide a thorough understanding of the embodiments of the present application. However, it will be apparent to those skilled in the art that the present application can be practiced in other embodiments that depart from these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present application with unnecessary detail.

[0041] In the description of the present application, it should be explained that if the terms indicating the orientation or position relationship such as "upper", "lower", "inner", "outer" appear, they are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as limiting the present application. The indicated device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present application. In addition, if the terms "first", "second", etc. appear, they are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0042] For example, in the embodiments described in the present application, the orientation words such as "upper", "lower", "left", "right", "front", "rear" are defined with reference to the up-down direction (also called height direction or whole vehicle Z direction), left-right direction (also called width direction or whole vehicle Y direction) and front-rear direction (also called length direction or whole vehicle X direction) of the vehicle. "Inner" and "outer" are defined with reference to the contour of the corresponding component, for example, "inner" and "outer" are defined with reference to the contour of the vehicle, the side close to the middle of the vehicle is "inner", and vice versa.

[0043] In addition, in the description of the present application, unless otherwise explicitly limited, the terms "mounting", "connecting", "connection", "connector" should be understood broadly. For example, it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or the communication between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood in combination with the specific circumstances.

[0044] The present application will be described in detail below with reference to the accompanying drawings and in conjunction with the embodiments.

[0045] Embodiment one

[0046] The present embodiment relates to a roof cross beam structure which is beneficial to improve the structural performance of the roof cross beam area, especially suitable for the roof front cross beam area in the detachable roof vehicle, thereby improving the performance of the whole vehicle body.

[0047] Overall structure, such as Figures 1 to 11As shown, the roof cross beam structure of the embodiment includes a cross beam inner plate 2, a cross beam outer plate 1 arranged above the cross beam inner plate 2, and a cross beam reinforcing plate 3 arranged below the cross beam inner plate 2. The cross beam inner plate 2 is provided with a first protruding portion 21 protruding to one side of the cross beam outer plate 1. The first protruding portion 21 is arranged along the left-right direction of the whole vehicle and abuts against the cross beam outer plate 1. A first cavity 4 is formed between the cross beam inner plate 2 and the cross beam outer plate 1 and is arranged on both sides of the first protruding portion 21. A second cavity 5 is formed between the cross beam reinforcing plate 3 and the cross beam inner plate 2. As viewed in the left-right direction of the whole vehicle, the two first cavities 4 and the second cavity 5 are arranged in a “pin” shape.

[0048] At this time, as arranged above, the first cavities 4 arranged on both sides of the first protruding portion 21 and the second cavity 5 are arranged in a “pin” shape as viewed in the left-right direction of the whole vehicle by the cooperation of the cross beam inner plate 2, the cross beam outer plate 1, and the cross beam reinforcing plate 3. This not only reduces the use of parts, but also helps to reduce the development cost of the mold and achieve lightweight design, and also helps to improve the overall structural stiffness. By arranging the first protruding portion 21, the Z-direction support effect of the cross beam outer plate 1 can be improved, thereby improving the overall Z-direction support effect of the structure, which helps to improve the structural performance of the roof cross beam structure.

[0049] Based on the overall introduction above, in detail, in the embodiment, the roof cross beam structure is preferably a roof front cross beam structure. The cross beam outer plate 1 is preferably a front cross beam outer plate 1. The cross beam inner plate 2 is preferably a front cross beam inner plate 2. The cross beam reinforcing plate 3 is a front cross beam reinforcing plate 3.

[0050] When the roof cross beam structure is preferably a roof front cross beam structure, it is especially suitable for use in a detachable roof vehicle to improve the structural performance of the roof front cross beam region. At the same time, the roof cross beam structure of the embodiment is also suitable for use in a detachable roof vehicle to improve the structural performance of the roof front cross beam region. Figures 1 to 11 Also, the examples in which the roof cross beam structure is preferably a roof front cross beam structure are illustrated, and the following will not be described in detail.

[0051] In the embodiment, as a preferred implementation form, as shown in Figure 2 、 Figures 4 to 6 As shown, the front side edge 31 of the cross beam reinforcing plate 3 is connected to the front edge 23 of the cross beam inner plate 2. The rear side edge 32 of the cross beam reinforcing plate 3 is located below the rear first cavity 4 and is connected to the cross beam inner plate 2.

[0052] Connecting the front side edge 31 of the cross beam reinforcing plate 3 to the front edge 23 of the cross beam inner plate 2 and locating the rear side edge 32 of the cross beam reinforcing plate 3 below the rear first cavity 4 and connecting it to the cross beam inner plate 2 can help to improve the structural stiffness of the front part of the roof cross beam structure to meet the local stiffness and collision requirements.

[0053] In the embodiment, as a preferred implementation form, the cross beam inner plate 2 is provided with a second protruding portion 22 protruding to one side of the cross beam outer plate 1, as shown in Figure 4 and Figure 5 The second protruding portion 22 is located at the front side of the first protruding portion 21, and the front side first cavity 4 is located between the first protruding portion 21 and the second protruding portion 22.

[0054] The advantage of such arrangement is mainly that it can help to improve the structural rigidity of the cross beam inner plate 2, and the front side first cavity 4 located between the first protruding portion 21 and the second protruding portion 22 can also help the two side first cavities 4 and the second cavity 5 to be arranged in a "pin" shape.

[0055] It should be mentioned here that the rear side edge 32 of the beam reinforcing plate is located below the rear side first cavity 4 and connected to the cross beam inner plate 2, and the above-mentioned two side first cavities 4 and the second cavity 5 are only arranged in a "pin" shape in general structure, and are inverted "pin" shape, and from the top-down direction of the vehicle, most of the area of the second cavity 5 corresponds to the front side first cavity 4, and a small part of the area of the second cavity 5 corresponds to the rear side second cavity 5.

[0056] The first protruding portion 21 and the second protruding portion 22 of the embodiment, in the specific implementation, are preferably protruded to one side of the cross beam outer plate 1 by the cross beam inner plate 2 itself, and the advantage of such arrangement is that it can optimize the structural rigidity of the cross beam inner plate 2 without increasing the thickness of the plate, and if necessary, the second protruding portion 22 can also be arranged along the left-right direction of the vehicle as the first protruding portion 21, and abuts and supports the cross beam outer plate 1 in the top-down direction of the vehicle, to improve the Z-direction supporting effect on the cross beam outer plate 1. Furthermore, from the top-down direction of the vehicle, the middle part of the first protruding portion 21 and the middle part of the second protruding portion 22 are arched forward, to help improve the structural rigidity strengthening effect and match the vehicle model.

[0057] In addition, in the embodiment, as a preferred implementation form, the cross beam reinforcing plate 3 is provided with a third protruding portion 33 protruding into the second cavity 5, and the third protruding portion 33 and the front side first cavity 4 are arranged in correspondence with each other in the up-down direction, as shown in Figure 4 , Figure 5 and Figure 11

[0058] ​It can be understood that, by arranging the third protruding portion 33 and the first cavity 4 on the front side in a one-to-one correspondence, the cross-sectional area of the middle part of the second cavity 5 can be tightened to be similar to a gourd from the left-right direction of the whole vehicle, that is, the cross-sectional area of the front and rear regions of the second cavity 5 is large, and the cross-sectional area of the middle region is small, thereby not only making the roof cross beam structure have better rigidity corresponding to the regions on the left and right sides of the second cavity 5, but also ensuring that it is easier to perform liquid leakage during coating, and has better processability.

[0059] In addition, in the embodiment, as a preferred implementation form, as shown in Figure 5 、 Figure 9 and Figure 11 , the inner plate 2 of the cross beam is provided with a first boss 27, the third protruding portion 33 is provided with a second boss 331 arranged in correspondence with the first boss 27, and the first boss 27 and the second boss 331 abut together. Specifically, as a further preferred arrangement, the first boss 27 and the second boss 331 are both a plurality of bosses arranged at intervals in the left-right direction of the whole vehicle.

[0060] In this way, by arranging the first boss 27 and the second boss 331 abutting together, and the first boss 27 and the second boss 331 being a plurality of bosses arranged at intervals in the left-right direction of the whole vehicle, the overall rigidity of the roof cross beam structure and the Z-direction support effect can be improved.

[0061] Of course, in the embodiment, the number and arrangement of the first boss 27 and the second boss 331 can be set and adjusted according to the actual structural requirements of the roof cross beam structure, for example, the first boss 27 and the second boss 331 are both three bosses arranged at intervals and uniformly in the left-right direction of the whole vehicle.

[0062] In addition, in the embodiment, as a preferred implementation form, referring to Figures 7 to 9 , the inner plate 2 of the cross beam is provided with a first reinforcing rib 28 located in the first cavity 4 on the rear side. The front end of the first reinforcing rib 28 is connected to the first protruding portion 21, and the rear end of the first reinforcing rib 28 extends to the rear edge 24 of the inner plate 2 of the cross beam. In this way, the local rigidity of the inner plate 2 of the cross beam can be improved, thereby improving the overall rigidity of the roof cross beam structure and the Z-direction support effect.

[0063] In detail, in the embodiment, as a preferred implementation form, the first reinforcing rib 28 is a plurality of reinforcing ribs arranged at intervals in the left-right direction of the whole vehicle. At the same time, the inner plate 2 of the cross beam is provided with a second reinforcing rib 29 protruding to one side of the cross beam reinforcing plate 3, and at least part of the left and right sides of the first reinforcing rib 28 is provided with the second reinforcing rib 29.

[0064] In this way, the rigidity of the whole roof cross beam structure and the Z-direction support effect can be further improved, and the second reinforcing rib 29 can also change the connection path of the rear side edge 32 of the cross beam reinforcing plate 3 and the cross beam inner plate 2, increase the connection area, and further enhance the connection effect between the cross beam reinforcing plate 3 and the cross beam inner plate 2.

[0065] The number of the first reinforcing rib 28 can be set and adjusted according to the actual rigidity requirement of the cross beam inner plate 2, for example, five first reinforcing ribs 28 can be arranged along the left-right direction of the whole vehicle. At this time, the second reinforcing rib 29 can be arranged on the left and right sides of the second first reinforcing rib 28 and the fourth first reinforcing rib 28 along the left-right direction of the whole vehicle, so as to optimize the structure of the cross beam inner plate 2 and further improve the structural rigidity of the cross beam inner plate 2.

[0066] In addition, as a preferred embodiment, referring to FIG. 1, Figure 7 As shown in FIG. 1, the first protruding part 21 is provided with a glue groove 211 for setting the structural glue for connecting the cross beam inner plate 2 and the cross beam outer plate 1. Here, the glue groove 211 is arranged to accommodate the structural glue for connecting the cross beam inner plate 2 and the cross beam outer plate 1, so that the cross beam inner plate 2 can connect and support the cross beam outer plate 1. The structural design is reasonable, which is beneficial to the arrangement of the structural glue and can also buffer the contact stress between the two, that is, buffer the force generated between the two during driving of the whole vehicle, so as to avoid deformation caused by strong connection.

[0067] In specific implementation, the structural glue of the present embodiment can preferably use the expansion glue known to those skilled in the art. The number and arrangement of the glue groove 211 can be set and adjusted according to the connection requirement and support requirement of the cross beam outer plate 1, for example, the glue groove 211 is arranged along the left-right direction of the whole vehicle, and each glue groove 211 is arranged along the left-right direction of the whole vehicle. Of course, if necessary, the first reinforcing rib 28 of the present embodiment can also be provided with a glue groove 211, especially along the left-right direction of the whole vehicle, the glue groove 211 arranged along the front-rear direction of the whole vehicle is arranged on the first reinforcing rib 28 located in the middle. In this way, the connection effect of the cross beam inner plate 2 and the cross beam outer plate 1 in the middle part and the support effect on the middle part of the cross beam outer plate 1 can be improved.

[0068] At the same time, it should be noted that the cross beam inner plate 2 and the cross beam outer plate 1 of the present embodiment are preferably connected by spot welding, and for this purpose, Figure 9 and Figure 10As shown, the cross beam outer plate 1 is formed with a front side connecting edge 11 welded with the front edge 23 of the cross beam inner plate 2, and a rear side connecting edge 12 welded with the rear edge 24 of the cross beam inner plate 2, and the cross beam outer plate 1 is further provided with a left side connecting edge 13 and a right side connecting edge 14, and the cross beam inner plate 2 is further provided with a left edge 25 and a right edge 26, specifically, the left side connecting plate is connected with the left edge 25, and the right side connecting edge 14 is connected with the right edge 26.

[0069] Furthermore, in the whole vehicle up-down direction, the front side connecting edge 11, the front edge 23 and the front side edge 31 are sequentially stitch-welded together, the rear side connecting edge 12 and the rear edge 24 are sequentially stitch-welded together, and the rear side edge 32 is supported at the bottom of the cross beam inner plate 2 corresponding to the first cavity of the rear side. In this way, in the detachable roof car model, the Z-direction support capability of the rear side of the roof cross beam structure can be effectively improved, and the detachable roof can be better matched and supported.

[0070] At this time, as shown in Figure 2 , Figure 4 and Figure 6 , the first reinforcing rib 28 and the second reinforcing rib 29 are preferably designed in the shape of a "j" character to improve the structural rigidity of each reinforcing rib itself, and after the cross beam reinforcing plate 3 is welded with the cross beam inner plate 2, the "j" character-shaped cavity on the side of the cross beam reinforcing plate 3 of each first reinforcing rib 28 will be partially closed by the cross beam reinforcing plate 3. Such a design also improves the overall rigidity of the roof cross beam structure and further enhances the Z-direction support effect.

[0071] The roof cross beam structure of the present embodiment not only can reduce the use of parts, facilitate the reduction of mold development cost and the realization of lightweight design, but also can facilitate the improvement of the overall rigidity of the structure and the improvement of the Z-direction support effect on the cross beam outer plate 1, thereby improving the Z-direction support effect of the whole vehicle structure, and thus facilitating the improvement of the overall quality of the vehicle.

[0072] Embodiment Two

[0073] The present embodiment relates to a vehicle, which is provided with the roof cross beam structure in embodiment one in the vehicle body.

[0074] The vehicle of the present embodiment, by providing the roof cross beam structure in embodiment one in the vehicle body, can reduce the use of parts in the roof cross beam area, facilitate cost reduction and lightweight design, and at the same time, can also improve the structural rigidity of the roof area of the vehicle body, thereby facilitating the improvement of the structural performance of the whole vehicle and the market competitiveness.

[0075] The above only describes the preferred embodiments of the present application, and is not intended to limit the present application, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A roof crossbeam structure, characterized in that: It includes an inner crossbeam plate (2), a crossbeam outer plate (1) arranged above the inner crossbeam plate (2), and a crossbeam reinforcement plate (3) arranged below the inner crossbeam plate (2); A first convex portion (21) protruding towards the crossbeam outer plate (1) side is provided on the inner crossbeam plate (2), the first convex portion (21) is arranged in the left - right direction of the whole vehicle, abuts against the crossbeam outer plate (1), and a first cavity (4) is formed between the inner crossbeam plate (2) and the crossbeam outer plate (1), and is respectively arranged on the front and rear sides of the first convex portion (21); A second cavity (5) is formed between the crossbeam reinforcement plate (3) and the inner crossbeam plate (2), and from the left - right direction of the whole vehicle, the two first cavities (4) and the second cavity (5) are arranged in a "pin" shape.

2. The roof crossbeam structure according to claim 1, characterized in that: The front side edge (31) of the crossbeam reinforcement plate (3) is connected to the front edge (23) of the inner crossbeam plate (2); The rear side edge (32) of the crossbeam reinforcement plate (3) is located below the first cavity (4) at the rear side and is connected to the inner crossbeam plate (2).

3. The roof crossbeam structure according to claim 1, characterized in that: A second convex portion (22) protruding towards the crossbeam outer plate (1) side is provided on the inner crossbeam plate (2); The second convex portion (22) is located in front of the first convex portion (21), and the first cavity (4) at the front side is located between the first convex portion (21) and the second convex portion (22).

4. The roof crossbeam structure according to claim 3, characterized in that: A third convex portion (33) protruding into the second cavity (5) is provided on the crossbeam reinforcement plate (3), and the third convex portion (33) and the first cavity (4) at the front side are arranged corresponding to each other up and down.

5. The roof crossbeam structure according to claim 4, characterized in that: A first boss (27) is provided on the inner crossbeam plate (2), a second boss (331) corresponding to the first boss (27) is provided on the third convex portion (33), and the first boss (27) and the second boss (331) abut against each other.

6. The roof crossbeam structure according to claim 5, characterized in that: Both the first boss (27) and the second boss (331) are multiple and arranged at intervals in the left - right direction of the whole vehicle.

7. The roof crossbeam structure according to claim 1, characterized in that: A first reinforcing rib (28) is provided on the inner crossbeam plate (2) in the first cavity (4) at the rear side; The front end of the first reinforcing rib (28) is connected to the first convex portion (21), and the rear end of the first reinforcing rib (28) extends to the rear edge (24) of the inner crossbeam plate (2).

8. The roof crossbeam structure according to claim 7, characterized in that: The first reinforcing rib (28) is multiple and arranged at intervals in the left - right direction of the whole vehicle; The second reinforcing ribs (29) are arranged on the cross beam inner plate (2) and protrude to one side of the cross beam reinforcing plate (3), and the left and right sides of at least part of the first reinforcing ribs (28) are provided with the second reinforcing ribs (29).

9. The roof cross beam structure according to any one of claims 1 to 8, characterized in that: The first protruding part (21) is provided with a glue groove (211) for setting up structural glue connecting the cross beam inner plate (2) and the cross beam outer plate (1).

10. A vehicle, characterized in that: The vehicle body is provided with the roof cross beam structure according to any one of claims 1 to 9.

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