Roof assembly of a vehicle, body-in-white structure of a vehicle and vehicle

Abstract

The application relates to a roof assembly of a vehicle, a body-in-white structure of the vehicle and the vehicle. The roof assembly of the vehicle comprises a roof outer plate and a roof beam structure, the roof beam structure is symmetrical about a reference surface and is arranged on one side of the roof outer plate, the roof beam structure comprises a first roof beam group and a second roof beam group, each of which has a plurality of roof beams, the end of the roof beam of the first roof beam group is provided with a turning part, the roof beams of two adjacent first roof beam groups are connected through the turning part, the roof beam of the first roof beam group is made by a rolling process, and the roof beam of the second roof beam group is made by a stamping process. The roof beam structure of the roof assembly is processed and manufactured by adopting a rolling-stamping composite scheme, the processing technology of different roof beams can be reasonably selected according to the stress conditions of different positions of the roof beam structure in actual application, the rationality of roof beam structure design can be improved, the lightweight of the roof beam structure can be realized while the structural strength of the roof beam structure is ensured.

Description

Technical Field

[0001] The present application relates to the technical field of vehicle roofs, and particularly to a roof assembly of a vehicle, a body-in-white structure of a vehicle, and a vehicle. Background Art

[0002] As one of the important components of a vehicle cab, the roof assembly is usually assembled on the top of the vehicle cab to increase the upper space of the cab.

[0003] In the related art, the roof assembly of a vehicle usually includes an outer roof panel and an inner roof panel that are connected to each other, and the inner roof panel can provide support for the outer roof panel. However, the existing roof assembly has a large number of components, complicated assembly steps, and a low level of lightweight. Summary of the Invention

[0004] Based on this, in view of the technical problems of the roof assembly in the related art, such as a large number of components, complicated assembly steps, and a low level of lightweight, it is necessary to provide a roof assembly of a vehicle, a body-in-white structure of a vehicle, and a vehicle that can improve the above technical problems.

[0005] According to the first aspect of the present application, an embodiment of the present application provides a roof assembly of a vehicle, including:

[0006] An outer roof panel; and

[0007] A roof beam structure, symmetric about a reference plane and provided on one side of the outer roof panel, the roof beam structure includes a first roof beam group and a second roof beam group both having a plurality of roof beams, a turning connection portion is provided at the end of the roof beam of the first roof beam group, the roof beams of adjacent two first roof beam groups are connected through the turning connection portion, the roof beams of the first roof beam group are made by roll forming process, and the roof beams of the second roof beam group are made by stamping process;

[0008] Wherein, the reference plane is perpendicular to the transverse direction of the outer roof panel and passes through the midpoint of the outer roof panel in the transverse direction.

[0009] In one embodiment, the roof beam of the first roof beam group includes a transverse plate and two side plates respectively connected to opposite ends of the transverse plate, and the roof beam of the first roof beam group is formed into a "channel" shaped structure.

[0010] In one embodiment, the turning connection portion includes an outward turning portion and a connecting portion;

[0011] The transverse plate includes a connecting section and an outward turning section, the connecting section is connected to the side plate, the outward turning section is turned outward to form the outward turning portion, and the part of the side plate extending beyond the connecting section along its extending direction forms the connecting portion;

[0012] The outward-curving section of one of the two adjacent top beams in the first top beam group is connected to the connecting section of the other of the two adjacent top beams in the first top beam group, and the connecting parts of the two adjacent top beams in the first top beam group are connected to each other.

[0013] In one embodiment, the first top beam assembly includes a crossbeam assembly and a longitudinal beam assembly. The crossbeam assembly includes a front lower crossbeam, a front crossbeam, a rear crossbeam, and a rear lower crossbeam. The longitudinal beam assembly includes a first longitudinal beam member and a second longitudinal beam member arranged symmetrically about a reference plane. The two ends of the front lower crossbeam, the front crossbeam, the rear crossbeam, and the rear lower crossbeam are respectively connected to the first longitudinal beam member and the second longitudinal beam member.

[0014] In one embodiment, the first longitudinal beam member includes a left front longitudinal beam, a left longitudinal beam, and a left rear longitudinal beam that are connected to each other in the longitudinal direction, and the second longitudinal beam member includes a right front longitudinal beam, a right longitudinal beam, and a right rear longitudinal beam that are connected to each other in the longitudinal direction.

[0015] The two ends of the front lower crossbeam and the front crossbeam are respectively connected to the left front longitudinal beam and the right front longitudinal beam, the two ends of the rear crossbeam are respectively connected to the left longitudinal beam and the right longitudinal beam, and the two ends of the rear lower crossbeam are respectively connected to the left rear longitudinal beam and the right rear longitudinal beam.

[0016] In one embodiment, the second top beam assembly includes a side beam assembly, which includes a front left side beam and a front right side beam. The two ends of the front left side beam are respectively connected to the front lower crossbeam and the left front longitudinal beam, and the two ends of the front right side beam are respectively connected to the front lower crossbeam and the right front longitudinal beam.

[0017] In one embodiment, the second top beam assembly includes a connecting component disposed between the front crossbeam and the rear crossbeam. The connecting component includes a left connecting plate and a right connecting plate symmetrically disposed about a reference plane, with both ends of the left connecting plate and the right connecting plate respectively connected to the front crossbeam and the rear crossbeam.

[0018] In one embodiment, the top cover outer plate includes a front top cover, a middle top cover, and a rear top cover that are connected to each other in the longitudinal direction, and the front top cover, the middle top cover, and the rear top cover are all provided with reinforcing ribs;

[0019] The front, middle, and rear top covers are all made using a stamping process.

[0020] In a second aspect, embodiments of this application provide a vehicle body-in-white structure, including the vehicle roof assembly in any of the above embodiments.

[0021] A third aspect of this application is that embodiments of this application provide a vehicle including the body-in-white structure of the vehicle in any of the above embodiments.

[0022] Through the above technical solution, the top cover beam structure of the top cover assembly is symmetrical about the reference plane and located on one side of the outer top cover panel, thereby providing symmetrical support to the outer top cover panel. The top cover beam structure includes a first top beam group and a second top beam group. The top beams of the first top beam group are manufactured using a roll forming process, while the top beams of the second top beam group are manufactured using a stamping process. This combination of roll forming and stamping allows for the rational selection of different processing techniques for the top beams based on the stress conditions at different locations in practical applications, improving the design rationality of the top cover beam structure. The roll forming process results in higher material utilization, enabling the top cover beam structure to be lightweight while maintaining structural strength, thus achieving a lightweight top cover assembly. The top beam of the first top beam group is provided with a hinged part at the end. The top beams of two adjacent first top beam groups are connected through the hinged part, so that multiple top beams of the first top beam group can be connected to each other through the characteristics of their own structure. This can avoid the introduction of new parts to connect the top beams of two adjacent first top beam groups to a certain extent, which helps to reduce the number of parts in the top cover beam structure, simplify the assembly steps, and achieve lightweighting. Attached Figure Description

[0023] Figure 1 This is a perspective view of the top cover assembly in one embodiment of this application.

[0024] Figure 2 This is a perspective view of the top cover outer panel in one embodiment of this application.

[0025] Figure 3 This is a three-dimensional schematic diagram of the top cover beam structure in one embodiment of this application.

[0026] Figure 4 This is a schematic diagram of the structure of the flip-up part in one embodiment of this application.

[0027] Explanation of reference numerals in the attached drawings: 100-Top cover assembly; 110-Outer top cover panel; 111-Front top cover; 112-Middle top cover; 113-Rear top cover; 120-Top cover beam structure; 10-Crossbeam assembly; 11-Front lower crossbeam; 12-Front crossbeam; 13-Rear crossbeam; 14-Rear lower crossbeam; 20-Longitudinal beam assembly; 21-First longitudinal beam component; 211-Left front longitudinal beam; 212-Left longitudinal beam; 213-Left rear longitudinal beam; 22-Second longitudinal beam component; 221-Right front longitudinal beam; 222-Right longitudinal beam; 223-Right rear longitudinal beam; 30-Side beam assembly; 31-Front left side beam; 32-Front right side beam; 40-Connecting assembly; 41-Left side connecting plate; 42-Right side connecting plate; 1-Flip-over part; 2-Outward flip-over part; 3-Connecting part; 4-Horizontal plate; 5-Side plate; 6-Through hole. Detailed Implementation

[0028] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are 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 this application. However, this application can be implemented 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 this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0029] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0030] Furthermore, where the terms "first" and "second" appear, these terms are 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 with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0031] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," 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 expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0032] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" 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. Similarly, "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.

[0033] It should be noted that if an element is referred to as "fixed to" or "set on" another element, it can be directly on the other element or there may be an intermediate element. If an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element present. Where applicable, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation. "Longitudinal" can refer to the longitudinal direction of the vehicle, i.e., the length direction of the vehicle. "Transverse" can refer to the transverse direction of the vehicle, i.e., the width direction of the vehicle. "Front" and "rear" can refer to the front and rear of the vehicle in the longitudinal direction, with the position of the vehicle's front end considered as front and the position furthest from the front end as rear.

[0034] In related technologies, the roof assembly of a vehicle cab is typically made of metal, comprising an interconnected outer roof panel and an inner roof panel. The inner roof panel includes multiple interconnected roof beams, which are manufactured using a stamping process. These stamped components are then assembled and connected to form the inner roof panel. To ensure the structural strength of the roof assembly, stamped components of a certain thickness are usually selected, or a multi-layered stamped component combination is used. This results in a large number of components in the roof assembly, making the assembly process cumbersome and increasing the workload and intensity of the workers. Furthermore, the larger number of components also increases the weight of the roof assembly, leading to a lower level of lightweighting. This hinders the lightweighting of the vehicle's body-in-white structure, which in turn reduces the vehicle's power utilization, potentially causing fuel waste and increased emissions. Therefore, how to reduce the number of components in the roof assembly while maintaining its structural strength, thus achieving lightweighting, is a pressing issue that needs to be addressed.

[0035] Based on this, and in accordance with the first aspect of this application, see [reference]. Figures 1 to 4This application provides a vehicle roof assembly 100, including a roof outer panel 110 and a roof beam structure 120. The roof beam structure 120 is symmetrical about a reference surface and is located on one side of the roof outer panel 110. The roof beam structure 120 includes a first roof beam group and a second roof beam group, each having multiple roof beams. The ends of the roof beams of the first roof beam group are provided with a hinge 1. The roof beams of two adjacent first roof beam groups are connected through the hinge 1. The roof beams of the first roof beam group are made by a roll forming process, and the roof beams of the second roof beam group are made by a stamping process. The reference surface is perpendicular to the transverse direction of the roof outer panel 110 and passes through the midpoint of the roof outer panel 110 in the transverse direction.

[0036] Through the above technical solution, the top cover beam structure 120 of the top cover assembly 100 is symmetrical about the reference plane and located on one side of the top cover outer plate 110, thereby enabling the top cover beam structure 120 to provide symmetrical support to the top cover outer plate 110. The top cover beam structure 120 includes a first top beam group and a second top beam group. The top beams of the first top beam group are manufactured using a roll forming process, and the top beams of the second top beam group are manufactured using a stamping process. This allows the top cover beam structure 120 to be manufactured using a combined roll forming and stamping process, which enables the rational selection of different top beam processing technologies based on the stress conditions at different locations of the top cover beam structure 120 in actual applications, thus improving the rationality of the top cover beam structure 120 design. The top beams manufactured using the roll forming process have a high material utilization rate, enabling the top cover beam structure 120 to be lightweight while ensuring its structural strength, thereby achieving the lightweighting of the top cover assembly 100. The top beam end of the first top beam group is provided with a hinge part 1. The top beams of two adjacent first top beam groups are connected through the hinge part 1, so that multiple top beams of the first top beam group can be connected to each other through the characteristics of their own structure. This can avoid introducing new parts to connect the top beams of two adjacent first top beam groups to a certain extent, which helps to reduce the number of parts of the top cover beam structure 120, simplify the assembly steps, and achieve lightweighting.

[0037] It can be understood that stamping is a production technology that uses the power of conventional or special stamping equipment to directly deform sheet metal in a die, thereby obtaining product parts with a certain shape, size, and performance. The parts processed by stamping are usually thin sheet parts, and sheet parts with relatively complex structures can be processed. Roll forming is a technology that obtains various open, closed, and wide-width deformed cross-section metal profiles by continuously rolling and bending metal sheets or strips. Roll forming has the advantages of high production efficiency and high material utilization rate. The parts processed by roll forming are usually thick sheet parts with relatively simple structures, and these parts usually have the characteristics of high strength, lightweight, and low cost. Compared with the top beam processed by stamping, the top beam processed by roll forming can absorb more energy during impact deformation. Therefore, it is beneficial to optimize the performance of the roof beam structure 120 by adopting a roll-stamping composite solution for processing and manufacturing.

[0038] In the above embodiment, in order to ensure the structural strength of the roof beam structure 120, the top beams of the first top beam group and the top beams of the second top beam group can both be made of high-strength steel.

[0039] In some embodiments, referring to Figure 4 , the top beam of the first top beam group includes a transverse plate 4 and two side plates 5 respectively connected to opposite ends of the transverse plate 4. The top beam of the first top beam group forms a "U" - shaped structure, which is beneficial to improve the lightweight level of the roof beam structure 120.

[0040] In some embodiments, referring to Figure 4 , the flipping and connecting part 1 includes an outward - flipping part 2 and a connecting part 3. The transverse plate 4 includes a connecting section and an outward - flipping section. The connecting section is connected to the side plate 5, and the outward - flipping section is folded outward to form the outward - flipping part 2. The part of the side plate 5 extending beyond the connecting section along its extension direction forms the connecting part 3. The outward - flipping section of one of the adjacent two top beams in the first top beam group is connected to the connecting section of the other adjacent top beam in the first top beam group, and the connecting parts 3 of the adjacent two top beams in the first top beam group are connected to each other. Since the adjacent two top beams in the first top beam group are connected by the flipping and connecting part 1, and the flipping and connecting part 1 includes the outward - flipping part 2 and the connecting part 3, multiple connection points can be provided, the connection area between the top beams can be increased, which is beneficial to improving the connection effect between the adjacent two top beams in the first top beam group and enhancing the connection strength of the roof beam structure 120.

[0041] In the above embodiment, both the outward - flipping part 2 and the connecting part 3 can include connecting surfaces, so as to increase the connection area between the top beams and improve the connection effect. The outward - flipping section of one of the adjacent two top beams in the first top beam group can be connected to the outside of the connecting section of the other, and the inside of its connecting section can be connected to the outward - flipping section of the other.

[0042] In related technologies, adjacent top beams are typically connected using joint parts, which requires the introduction of new components and the use of corresponding tooling to process these joint parts. This not only hinders the lightweighting of the top beam structure but also increases its manufacturing cost. Compared to the joint parts used in related technologies, the top beams in the top assembly 100 provided in this application have a hinged section 1 at their ends. Adjacent top beams in the first top beam group are connected via this hinged section 1, thereby avoiding the introduction of new components and achieving both lightweighting and reduced manufacturing costs.

[0043] In some embodiments, see Figure 3 The first top beam assembly includes a crossbeam assembly 10 and a longitudinal beam assembly 20. The crossbeam assembly 10 includes a front lower crossbeam 11, a front crossbeam 12, a rear crossbeam 13, and a rear lower crossbeam 14. The longitudinal beam assembly 20 includes a first longitudinal beam member 21 and a second longitudinal beam member 22 arranged symmetrically about a reference plane. The two ends of the front lower crossbeam 11, the front crossbeam 12, the rear crossbeam 13, and the rear lower crossbeam 14 are respectively connected to the first longitudinal beam member 21 and the second longitudinal beam member 22. Since the two ends of the front lower crossbeam 11, the front crossbeam 12, the rear crossbeam 13, and the rear lower crossbeam 14 of the crossbeam assembly 10 are respectively connected to the first longitudinal beam member 21 and the second longitudinal beam member 22, they can collectively form the main frame of the top cover beam structure 120, which can provide relatively sufficient support for different positions of the top cover outer plate 110, thus improving the support effect.

[0044] In some embodiments, see Figure 3 The first longitudinal beam 21 includes a left front longitudinal beam 211, a left longitudinal beam 212, and a left rear longitudinal beam 213 connected longitudinally. The second longitudinal beam 22 includes a right front longitudinal beam 221, a right longitudinal beam 222, and a right rear longitudinal beam 223 connected longitudinally. The two ends of the front lower crossbeam 11 and the front crossbeam 12 are respectively connected to the left front longitudinal beam 211 and the right front longitudinal beam 221. The two ends of the rear crossbeam 13 are respectively connected to the left longitudinal beam 212 and the right longitudinal beam 222. The two ends of the rear lower crossbeam 14 are respectively connected to the left rear longitudinal beam 213 and the right rear longitudinal beam 223. Since the two ends of the front lower crossbeam 11 and the front crossbeam 12 are respectively connected to the left front longitudinal beam 211 and the right front longitudinal beam 221, they can provide better support for the front side of the top cover outer plate 110, which is beneficial to improving the structural strength of the front side of the top cover assembly 100.

[0045] In some embodiments, see Figure 3The second top beam assembly includes a side beam assembly 30, which includes a front left side beam 31 and a front right side beam 32. The two ends of the front left side beam 31 are connected to the front lower crossbeam 11 and the left front longitudinal beam 211, respectively. The two ends of the front right side beam 32 are connected to the front lower crossbeam 11 and the right front longitudinal beam 221, respectively. This can improve the structural strength of the front side of the top cover beam structure 120, further improve the support effect on the top cover outer plate 110 located on the front side, and help improve the overall structural strength of the front side of the top cover assembly 100.

[0046] In some embodiments, see Figure 3 The second top beam assembly includes a connecting component 40 disposed between the front crossbeam 12 and the rear crossbeam 13. The connecting component 40 includes a left connecting plate 41 and a right connecting plate 42 symmetrically disposed about a reference plane. Both ends of the left connecting plate 41 and the right connecting plate 42 are respectively connected to the front crossbeam 12 and the rear crossbeam 13, thereby improving the stability and structural strength of the top cover beam structure 120 between the front crossbeam 12 and the rear crossbeam 13.

[0047] In some embodiments, see Figure 1 and Figure 2 The outer top cover 110 includes a front top cover 111, a middle top cover 112, and a rear top cover 113 that are connected to each other along the longitudinal direction. The front top cover 111, the middle top cover 112, and the rear top cover 113 are all provided with reinforcing ribs. The provision of reinforcing ribs helps to improve the structural strength of the outer top cover 110.

[0048] In some embodiments, all connections of the vehicle roof assembly 100 can be connected by spot welding, thereby achieving a better connection effect.

[0049] In some embodiments, the front top cover 111, the middle top cover 112, and the rear top cover 113 can all be manufactured using a stamping process. The stamping process can be used to manufacture sheet metal with relatively complex structures and thin thicknesses, thereby enabling the production of a top cover outer panel 110 with a certain aesthetic appeal.

[0050] In some embodiments, see Figure 1 and Figure 2 The middle top cover 112 may be provided with a through hole 6, which facilitates the subsequent assembly of a sunroof on the top cover assembly 100. Since the second top beam group of the top cover beam structure 120 includes a connecting component 40 located between the front crossbeam 12 and the rear crossbeam 13, the left connecting plate 41 and the right connecting plate 42 of the connecting component 40 can be correspondingly located on the inner side of the middle top cover 112. The left connecting plate 41 and the right connecting plate 42 can support the middle top cover 112 near the through hole 6, thereby supporting the middle top cover 112 equipped with a sunroof, which helps to improve the overall structural strength of the top cover assembly 100.

[0051] This application does not limit the specific shape of the through hole 6. In some embodiments, see [reference needed]. Figure 1 and Figure 2 The through hole 6 can be formed as a rectangular hole.

[0052] According to a second aspect of this application, embodiments of this application provide a vehicle body-in-white structure, including the vehicle roof assembly 100 of any of the above embodiments.

[0053] According to a third aspect of this application, embodiments of this application provide a vehicle including the body-in-white structure of the vehicle in any of the above embodiments.

[0054] 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.

[0055] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A roof assembly for a vehicle, characterized in that, Comprising: The outer panel of the roof cover; And A roof beam structure, symmetric about a reference plane and disposed on one side of the outer panel of the roof cover. The roof beam structure includes a first roof beam group and a second roof beam group both having a plurality of roof beams. The end of the roof beam of the first roof beam group is provided with a flipping joint part, and the roof beams of two adjacent first roof beam groups are connected through the flipping joint part. The roof beams of the first roof beam group are made by a roll forming process, and the roof beams of the second roof beam group are made by a stamping process; Wherein, the reference plane is perpendicular to the transverse direction of the outer panel of the roof cover and passes through the midpoint of the outer panel of the roof cover in the transverse direction; The flipping joint part includes an outward flipping part and a connecting part. The roof beam of the first roof beam group includes a transverse plate and two side plates respectively connected to opposite ends of the transverse plate. The transverse plate includes a connecting section and an outward flipping section. The connecting section is connected to the side plate, and the outward flipping section is flipped outward to form the outward flipping part. The part of the side plate extending beyond the connecting section along its extending direction forms the connecting part; The outward flipping part of one of the two adjacent roof beams of the first roof beam group is connected to the connecting section of the other of the two adjacent roof beams of the first roof beam group, and the connecting parts of the two adjacent roof beams of the first roof beam group are connected to each other; The first roof beam group includes a cross beam assembly and a longitudinal beam assembly. The cross beam assembly includes a front lower cross beam, a front cross beam, a rear cross beam and a rear lower cross beam. The longitudinal beam assembly includes a first longitudinal beam member and a second longitudinal beam member symmetrically arranged about the reference plane. Both ends of the front lower cross beam, the front cross beam, the rear cross beam and the rear lower cross beam are respectively connected to the first longitudinal beam member and the second longitudinal beam member; The first longitudinal beam member includes a left front longitudinal beam, a left longitudinal beam and a left rear longitudinal beam connected to each other along the longitudinal direction. The second longitudinal beam member includes a right front longitudinal beam, a right longitudinal beam and a right rear longitudinal beam connected to each other along the longitudinal direction; The second roof beam group includes a side beam assembly. The side beam assembly includes a front left side beam and a front right side beam. Both ends of the front left side beam are respectively connected to the front lower cross beam and the left front longitudinal beam. Both ends of the front right side beam are respectively connected to the front lower cross beam and the right front longitudinal beam.

2. The roof assembly of the vehicle according to claim 1, characterized in that, The roof beam of the first roof beam group is formed into a "U" - shaped structure.

3. The roof assembly of the vehicle according to claim 1, characterized in that, Both ends of the front lower cross beam and the front cross beam are respectively connected to the left front longitudinal beam and the right front longitudinal beam. Both ends of the rear cross beam are respectively connected to the left longitudinal beam and the right longitudinal beam. Both ends of the rear lower cross beam are respectively connected to the left rear longitudinal beam and the right rear longitudinal beam.

4. The roof assembly of the vehicle according to claim 1, characterized in that, The second roof beam group includes a connecting component disposed between the front cross beam and the rear cross beam. The connecting component includes a left connecting plate and a right connecting plate symmetrically arranged about the reference plane. Both ends of the left connecting plate and the right connecting plate are respectively connected to the front cross beam and the rear cross beam.

5. The roof assembly of the vehicle according to any one of claims 1-4, characterized in that, The outer panel of the roof cover includes a front roof cover, a middle roof cover and a rear roof cover connected to each other along the longitudinal direction. The front roof cover, the middle roof cover and the rear roof cover are all provided with reinforcing ribs; The front roof cover, the middle roof cover and the rear roof cover are all made by a stamping process.

6. A body-in-white structure for a vehicle, characterized in that, It includes a roof cover assembly of a vehicle as described in any one of claims 1 - 5.

7. A vehicle, characterized in that, It includes a body - in - white structure of a vehicle as described in claim 6.

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