Car body top cover reinforcing structure and car body top cover assembly

Abstract

The utility model provides a car body top cover reinforcing structure and a car body top cover assembly. The car body top cover reinforcing structure comprises a reinforcing plate. The reinforcing plate comprises a reinforcing plate body arranged in the front-back direction of the whole vehicle and reinforcing arms arranged on the left side and the right side of the reinforcing plate body respectively, and the reinforcing arms on the two sides are connected to the rear portion of the reinforcing plate body. Each side reinforcing arm comprises a plurality of reinforcing supporting arms, one ends of the reinforcing supporting arms are intersected together and connected with the reinforcing plate body, and the reinforcing supporting arms comprise first supporting arms with the other ends extending towards the side rear portion of the vehicle. The car body top cover reinforcing structure not only has a better reinforcing effect, but also can optimize a force transmission channel, so that the top cover has better collision performance, and the collision safety performance of the whole car can be improved.

Description

TECHNICAL FIELD

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

[0002] At present, for the high performance vehicle with low and streamlined body, the roof generally forms reinforcing rib on the inner plate, or adopts the mode of setting simple reinforcing plate or reinforcing support between the inner and outer plates to increase the structural strength, so as to improve the overall crash performance of the roof. However, the existing roof reinforcing mode still has the defects of limited reinforcing effect, and is not conducive to the transmission and absorption of the crash force when the vehicle crashes, which is not conducive to the improvement of the vehicle crash safety. SUMMARY

[0003] Therefore, the utility model aims at providing a vehicle body roof reinforcing structure to improve the vehicle crash safety.

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

[0005] A vehicle body roof reinforcing structure, comprising a reinforcing plate;

[0006] The reinforcing plate comprises a reinforcing plate main body arranged along the front and rear directions of the vehicle, and reinforcing arms arranged on the left and right sides of the reinforcing plate main body, and the reinforcing arms on the two sides are connected to the rear part of the reinforcing plate main body.

[0007] Each of the reinforcing arms comprises a plurality of reinforcing arms, one end of the plurality of reinforcing arms is connected to the reinforcing plate main body, and the plurality of reinforcing arms comprises a first arm extending to the rear side of the vehicle.

[0008] Further, the plurality of reinforcing arms on each side further comprises a second arm extending to the B pillar of the vehicle body, and the first arm on each side is located behind the second arm on the same side.

[0009] Further, the rear part of the reinforcing plate main body has a rear extension section located between the first arms on the two sides.

[0010] Further, the reinforcing plate main body comprises a plurality of main body parts arranged side by side along the left and right directions of the vehicle, each of the main body parts extends along the front and rear directions of the vehicle, and each of the reinforcing arms is connected to the main body part adjacent thereto.

[0011] Furthermore, each of the main body parts and each of the reinforcing support arms are upwardly bulged to form an inner cavity; the inner cavities between the main body parts are connected to each other, and the inner cavities of the reinforcing support arms on each side are connected to the inner cavity of the adjacent main body part.

[0012] Furthermore, there are upwardly bulged connecting parts between adjacent main body parts, the inner cavities of adjacent main body parts are connected through the inner cavity of the connecting part, and there are multiple connecting parts arranged at intervals along the front-rear direction of the whole vehicle between adjacent main body parts; and / or, at least part of the cross-section of each main body part and at least part of the cross-section of each reinforcing support arm are in a "C" shape.

[0013] Furthermore, extension arms are respectively arranged on the left and right sides at the front end of the main body of the reinforcing plate, each extension arm extends along the left-right direction of the whole vehicle and is connected to the adjacent main body part; each extension arm is upwardly bulged, and the inner cavity of each extension arm is connected to the inner cavity of the adjacent main body part, and / or, a connecting plate body is arranged between each extension arm and the adjacent main body part, and a door hinge mounting hole is arranged on the connecting plate body.

[0014] Furthermore, the reinforcing plate is integrally formed, and / or, the reinforcing plate is made of a carbon fiber composite material.

[0015] Compared with the prior art, the present utility model has the following advantages:

[0016] For the body roof reinforcing structure of the present utility model, by arranging reinforcing arms on both sides at the rear of the main body of the reinforcing plate and making the first arm extending towards the rear side of the vehicle in the reinforcing arm, not only can the "T" shape formed by the main body of the reinforcing plate and the reinforcing arms on both sides be utilized to make the reinforcing plate have a better reinforcing effect, but also the first arm can be utilized during vehicle collision to make the collision force better transmitted to and absorbed by the main body of the reinforcing plate, optimize the force transmission path, and be beneficial to improving the collision safety of the whole vehicle.

[0017] In addition, the reinforcing support arm includes a second arm connected to the B pillar, which is beneficial to the overall layout of the roof in the vehicle body and can also improve the torsional stiffness of the whole vehicle by connecting with the B pillars on both sides. A rear extension section is arranged at the rear of the main body of the reinforcing plate, which can increase the structural strength of the overall rear position of the reinforcing plate and also improve the collision response ability of the roof during rear collision of the vehicle. The main body of the reinforcing plate is composed of multiple main body parts, which helps to increase the structural strength of the main body of the reinforcing plate. Each main body part and each reinforcing support arm are upwardly bulged to form an inner cavity, and the inner cavities between them are connected, and the characteristics of large structural strength of the cavity structure can be utilized to further increase the structural strength of the whole reinforcing plate.

[0018] Secondly, the multiple connecting parts ensure the structural strength of the main body of the reinforcing plate. Simultaneously, the cross-sections of the main body and the reinforcing arm form a "U" shape, leveraging the high structural strength of the "U" shape to guarantee the structural strength of both the main body and the reinforcing arm. Extension arms are provided on both sides of the front end of the main body of the reinforcing plate, increasing the overall structural strength of the front end of the reinforcing plate. The upward protrusion of the extension arms forms an inner cavity, ensuring their structural strength. A connecting plate is provided between the extension arms and the adjacent main body, with door hinge mounting holes on the connecting plate for easy door installation.

[0019] Furthermore, the one-piece molding of the reinforcing plate facilitates its fabrication and also helps improve its overall strength. Made of carbon fiber composite material, the reinforcing plate effectively strengthens the roof assembly structure through the structural strength characteristics of carbon fiber composites. Moreover, the one-piece molding capability and lightweight nature of carbon fiber composites help reduce the number of parts on the roof, thus contributing to weight reduction in the roof area.

[0020] Another objective of this utility model is to provide a vehicle roof assembly, including an outer roof panel and an inner roof panel fastened together, and a vehicle roof reinforcement structure as described above located between the outer roof panel and the inner roof panel.

[0021] Furthermore, both the outer and inner panels of the top cover are made of carbon fiber composite material, and the outer and reinforcing plates are bonded together, as are the inner and reinforcing plates.

[0022] The vehicle roof assembly described in this utility model is provided with the aforementioned vehicle roof reinforcement structure, which can have better structural strength. At the same time, it can also optimize the force transmission channel to facilitate the transmission and dispersion of collision force, thereby improving the overall vehicle collision performance.

[0023] Furthermore, the outer and inner panels of the top cover are made of carbon fiber composite material, which helps to improve their structural strength and effectively enhance the structural strength of the top cover assembly. Simultaneously, the lightweight nature of carbon fiber composite materials allows for integrated molding, reducing the number of parts in the top cover assembly and contributing to weight reduction. The top cover reinforcing plate is bonded to both the outer and inner panels, a simple connection method that facilitates the manufacturing of the top cover assembly. Attached Figure Description

[0024] The accompanying drawings, which form part of this utility model, are used to provide a further understanding of the utility model. The illustrative embodiments of the utility model and their descriptions are used to explain the utility model and do not constitute an undue limitation of the utility model. In the drawings:

[0025] Figure 1 This is a schematic diagram of the overall structure of the vehicle roof reinforcement structure described in this embodiment of the utility model;

[0026] Figure 2 and Figure 3 for Figure 1 The structural diagrams shown are presented from different perspectives.

[0027] Figure 4 This is a schematic diagram of the assembly of the vehicle roof reinforcement structure and the inner roof panel according to an embodiment of the present utility model;

[0028] Figure 5 and Figure 6 These are schematic diagrams of the vehicle roof assembly described in this embodiment of the present invention from different perspectives.

[0029] Explanation of reference numerals in the attached figures:

[0030] 1. Outer panel of the top cover; 2. Inner panel of the top cover;

[0031] 3. Reinforcing plate; 31. Reinforcing plate body; 311. Main body; 312. Rear extension section; 313. Connecting part; 32. Reinforcing arm; 321. First support arm; 322. Second support arm; 33. Extension arm; 34. Connecting plate; 341. Door hinge mounting hole. Detailed Implementation

[0032] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0033] In the description of this utility model, it should be noted that if terms such as "upper," "lower," "inner," or "outer" appear, indicating orientation or positional relationship, they are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model 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 utility model. Furthermore, if terms such as "first" or "second" appear, they are also used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0034] Taking the vehicle in which the roof reinforcement structure described in this utility model is located as an example, the directional terms used in the embodiments, such as "up," "down," "left," "right," "front," and "rear," are defined based on the vehicle's vertical direction (also known as the height direction, or the vehicle's Z-direction), horizontal direction (also known as the width direction, or the vehicle's Y-direction), and front-back direction (also known as the length direction, or the vehicle's X-direction). "Inner" and "outer" are defined based on the outline of the corresponding component. For example, "inner" and "outer" are defined based on the vehicle's outline, with the side of the vehicle outline closer to the middle of the vehicle being "inner," and the opposite side being "outer."

[0035] Furthermore, in the description of this utility model, unless otherwise explicitly defined, the terms "installation," "connection," "joining," and "connector" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model in light of the specific circumstances.

[0036] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0037] Example 1

[0038] This embodiment relates to a vehicle roof reinforcement structure, which not only has a good structural reinforcement effect, but also optimizes the force transmission channel, thereby improving the overall vehicle collision safety.

[0039] In terms of overall structure, such as Figures 1 to 6 As shown, the vehicle body roof reinforcement structure of this embodiment includes a reinforcement plate 3. The reinforcement plate 3 includes a reinforcement plate body 31 arranged along the front-rear direction of the vehicle, and reinforcement arms 32 respectively disposed on the left and right sides of the reinforcement plate body 31, and the two side reinforcement arms 32 are connected to the rear of the reinforcement plate body 31.

[0040] Furthermore, each side reinforcing arm 32 includes multiple reinforcing arms, with one end of each reinforcing arm converging together and connected to the reinforcing plate body 31. Among the multiple reinforcing arms, there is a first arm 321 whose other end extends toward the rear of the vehicle.

[0041] At this time, with the above configuration, the "T" shape formed by the main body 31 of the reinforcing plate and the two reinforcing arms 32 on both sides can be used to make the reinforcing plate 3 have a better reinforcing effect. At the same time, the first arm 321 can also be used to better transmit and absorb the collision force to the main body 31 of the reinforcing plate during vehicle collision, so as to optimize the force transmission channel and thus improve the collision safety of the whole vehicle.

[0042] Based on the above general introduction, in detail, in this embodiment, the reinforcing plate 3 is preferably disposed between the outer roof panel 1 and the inner roof panel 2 in the vehicle body, so as to maintain the exquisite appearance of the roof while improving the structural strength of the roof.

[0043] In this embodiment, as a preferred implementation, see [reference needed]. Figure 1 and Figure 4 As shown, each of the multiple reinforcing arms on each side also includes a second arm 322 extending towards the B-pillar of the vehicle body at the other end, and the first arm 321 on each side is located behind the second arm 322 on the same side.

[0044] Here, by strengthening the support arm, including the second support arm 322 connected to the B-pillar, the overall arrangement of the roof in the vehicle body can be facilitated, and the torsional rigidity of the whole vehicle can be improved by connecting it with the B-pillars on both sides.

[0045] Of course, the number of the first arm 321 and the second arm 322 in this embodiment can be set and adjusted according to the actual structural reinforcement requirements of the top cover. For example, each of the multiple reinforcing arms on each side includes a first arm 321 and a second arm 322.

[0046] Secondly, in this embodiment, as a preferred implementation, see still... Figure 1 and Figure 2 As shown, the rear of the reinforcing plate body 31 has a rear extension 312 located between the first arms 321 on both sides. The main advantage of this arrangement is that it can increase the structural strength of the overall rear end of the reinforcing plate 3 and also improve the roof's ability to cope with rear-end collisions.

[0047] Furthermore, in this embodiment, as a preferred implementation, the reinforcing plate body 31 includes multiple main body portions 311 arranged side by side along the left-right direction of the vehicle. Each main body portion 311 extends along the front-rear direction of the vehicle, and each side reinforcing arm 32 is connected to the adjacent main body portion 311. Here, the reinforcing plate body 31 is composed of multiple main body portions 311, which helps to increase the structural strength of the reinforcing plate body 31.

[0048] It is worth mentioning that the number of main body parts 311 in this embodiment can be set and adjusted according to the structural strength requirements of the reinforcing plate 3 itself. For example, it can be specifically set as follows: Figures 1 to 4 The two side-by-side reinforcing arms 32 shown are respectively connected to the main body 311 on the same side.

[0049] Similarly, in this embodiment, the rear extension section 312 is preferably configured as two arranged side by side along the left-right direction of the whole vehicle, and respectively connected to the rear end of the main body 311 on the same side, so as to enhance the structural strength of the rear end of the main body 311, thereby facilitating the improvement of the overall structural strength of the rear end of the reinforcing plate 3.

[0050] In specific implementation, this embodiment, as a preferred implementation, combines... Figure 1 and Figure 3 As shown, each main body 311 and each reinforcing arm are bulging upwards to form an inner cavity. Furthermore, the inner cavities of each main body 311 are connected, and the inner cavity of each side reinforcing arm is connected to the inner cavity of the adjacent main body 311.

[0051] It can be understood that each main body portion 311 and each reinforcing arm bulge upward to form an inner cavity, and the inner cavities between them are connected. By utilizing the characteristic of the large structural strength of the cavity structure, the overall structural strength of the reinforcing plate 3 can be further increased.

[0052] Furthermore, in this embodiment, as a preferred implementation form, there is a bulging connecting portion 313 provided between adjacent main body portions 311. The inner cavities of adjacent main body portions 311 are connected through the inner cavity of the connecting portion 313, and there are multiple connecting portions 313 arranged at intervals along the front-rear direction of the whole vehicle between adjacent main body portions 311, so as to facilitate ensuring the structural strength of the main body 31 of the reinforcing plate.

[0053] Of course, the number and arrangement form of the above-mentioned connecting portions 313 can also be set and adjusted accordingly according to the actual structural strengthening requirements of the main body 31 of the reinforcing plate. For example, it can be specifically set to three or four, etc., and at least one connecting portion 313 corresponds to the reinforcing arm 32 on each side, etc.

[0054] At this time, also as a preferred implementation form, in this embodiment, at least part of the cross-section of each main body portion 311 and at least part of the cross-section of each reinforcing arm are in a "C" shape. The main advantage of such a setting is that by utilizing the characteristic of the large structural strength of the "C" shape structure, the structural strength of the main body portion 311 and the reinforcing arm itself can be ensured.

[0055] It should be noted that the reason why at least part of the cross-section of each main body portion 311 and at least part of the cross-section of each reinforcing arm are in a "C" shape is that for the part corresponding to the connecting portion 313, part of each main body portion 311 or each reinforcing arm may be in a "one" shape, that is, in a plate shape.

[0056] Continue to refer to Figure 1 and Figure 2 As shown, in this embodiment, as a preferred implementation form, extension arms 33 are respectively provided on the left and right sides at the front end of the main body 31 of the reinforcing plate. Each side extension arm 33 extends along the left-right direction of the whole vehicle and is connected to the adjacent main body portion 311.

[0057] Moreover, each side extension arm 33 bulges upward, and the inner cavity of each side extension arm 33 is connected to the inner cavity of the adjacent main body portion 311. With the above settings, the structural strength of the overall front end position of the reinforcing plate 3 can be increased by providing the extension arms 33 on both sides at the front end of the main body 31 of the reinforcing plate. The extension arm 33 bulges upward and forms an inner cavity, which can also ensure the structural strength of the extension arm 33.

[0058] In the specific structure of this embodiment, at least one connecting part 313 is provided corresponding to the extension arms 33 on each side, so as to connect the inner cavities of the extension arms 33 on each side through the inner cavity of the adjacent main body part 311. Furthermore, the cross-section of each extension arm 33 is also preferably set to be at least partially in a "Ji" shape, like each main body part 311 or each strengthening support arm, so as to utilize the characteristic of the large structural strength of the "Ji" shape to ensure its own structural strength.

[0059] Meanwhile, in this embodiment, as a preferred implementation form, a connecting plate body 34 is provided between each extension arm 33 and the adjacent main body part 311, and a door hinge mounting hole 341 is provided on the connecting plate body 34. Thus, it is convenient for the installation and arrangement of the door.

[0060] Of course, the number and arrangement form of the above-mentioned door hinge mounting holes 341 can be set and adjusted accordingly according to the actual installation requirements of the door. For example, two spaced door hinge mounting holes 341 are provided on each connecting plate body 34, etc. Moreover, during specific implementation, the door hinge mounting holes 341 of this embodiment are particularly suitable for installing butterfly doors.

[0061] In addition, in this embodiment, as a preferred implementation form, the reinforcing plate 3 is integrally formed. Such a setting is beneficial to its preparation and also helps to improve the overall strength of the reinforcing plate 3.

[0062] Furthermore, as a preferred implementation form, the reinforcing plate 3 of this embodiment is made of a carbon fiber composite material. In this way, the effective strengthening of the structural strength of the roof assembly can be achieved through the characteristics of the structural strength of the carbon fiber composite material, and by using the characteristics that the carbon fiber composite material structure can be integrally formed into parts and the carbon fiber composite material is light in weight, it also helps to reduce the number of parts of the vehicle body roof and is beneficial to weight reduction at the roof position.

[0063] In the roof strengthening structure of this embodiment, by providing strengthening arms 32 on both sides at the rear of the main body 31 of the reinforcing plate and having a first arm 321 extending towards the rear side of the vehicle in the strengthening arms 32, not only can the "T" shape formed by the main body 31 of the reinforcing plate and the strengthening arms 32 on both sides be utilized to make the reinforcing plate 3 have a better strengthening effect, but also the first arm 321 can be utilized during a vehicle collision to make the collision force better transmitted to and absorbed by the main body 31 of the reinforcing plate, optimize the force transmission channel, and be beneficial to enhancing the vehicle's overall collision safety.

[0064] Embodiment Two

[0065] This embodiment relates to a vehicle body roof assembly. In terms of the overall structure, as Figures 4 to 6As shown, it includes an outer roof panel 1 and an inner roof panel 2 that are snap-fitted together, and the body roof strengthening structure in the first embodiment located between the outer roof panel 1 and the inner roof panel 2.

[0066] Moreover, in this embodiment, as a preferred implementation form, both the outer roof panel 1 and the inner roof panel 2 are made of carbon fiber composite materials, and are adhesively connected between the outer roof panel 1 and the reinforcing plate 3, and between the inner roof panel 2 and the reinforcing plate 3.

[0067] It can be understood that making the outer roof panel 1 and the inner roof panel 2 of carbon fiber composite materials is also beneficial to improving the structural strength of the two themselves, so as to effectively strengthen the structural strength of the roof assembly. At the same time, the characteristics of the carbon fiber composite material structure that can be integrally formed and the light weight of the carbon fiber composite material can be used to reduce the number of parts of the roof assembly and is beneficial to the weight reduction of the roof. Secondly, the adhesive connection between the roof reinforcing plate 3 and the outer roof panel 1 and the inner roof panel 2 makes the connection method simple and facilitates the processing and manufacturing of the roof assembly.

[0068] It is still worth mentioning here that, as described in the first embodiment, at least part of the cross-section of each main body part 311, at least part of the cross-section of each reinforcing arm, and at least part of the cross-section of each extension arm 33 are in a "U" shape, which is also beneficial to increasing the adhesive area between the reinforcing plate 3 and the outer roof panel 1 and the inner roof panel 2, thereby ensuring the connection reliability.

[0069] The body roof assembly of this embodiment can improve the transmission and dispersion effect of collision force by setting the body roof strengthening structure in the first embodiment, thereby being beneficial to improving the collision safety quality and market competitiveness of the whole vehicle.

[0070] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A body roof strengthening structure, characterized in that: It includes a reinforcing plate (3); The reinforcing plate (3) includes a reinforcing plate main body (31) arranged along the front-rear direction of the whole vehicle, and reinforcing arms (32) respectively provided on the left and right sides of the reinforcing plate main body (31), and the two sides of the reinforcing arms (32) are connected to the rear of the reinforcing plate main body (31); Each side of the reinforcing arm (32) includes a plurality of reinforcing sub-arms, one ends of the plurality of reinforcing sub-arms converge together and are connected to the reinforcing plate main body (31), and among the plurality of reinforcing sub-arms, there is a first sub-arm (321) whose other end extends towards the rear side of the vehicle.

2. The body roof strengthening structure according to claim 1, characterized in that: Among the plurality of reinforcing sub-arms on each side, there is also a second sub-arm (322) whose other end extends towards the vehicle body B pillar, and the first sub-arm (321) on each side is located behind the second sub-arm (322) on the same side.

3. The body roof strengthening structure according to claim 2, characterized in that: The rear part of the reinforcing plate main body (31) has a rear extension section (312) located between the two sides of the first sub-arms (321).

4. The body roof strengthening structure according to claim 2, characterized in that: The reinforcing plate main body (31) includes a plurality of main body parts (311) arranged side by side along the left-right direction of the whole vehicle, each of the main body parts (311) extends along the front-rear direction of the whole vehicle, and each side of the reinforcing arm (32) is respectively connected to the adjacent main body part (311).

5. The body roof strengthening structure according to claim 4, characterized in that: Each of the main body parts (311) and each of the reinforcing sub-arms are bulged upward to form an inner cavity; The inner cavities between each of the main body parts (311) are connected to each other, and the inner cavity of each side of the reinforcing sub-arm and the inner cavity of the adjacent main body part (311) are connected to each other.

6. The body roof strengthening structure according to claim 5, characterized in that: There is a bulged connecting part (313) between adjacent main body parts (311), the inner cavities of adjacent main body parts (311) are connected through the inner cavity of the connecting part (313), and the connecting parts (313) between adjacent main body parts (311) are multiple and arranged at intervals along the front-rear direction of the whole vehicle; and / or, At least part of the cross-section of each of the main body parts (311) and at least part of the cross-section of each of the reinforcing sub-arms are in a "U" shape.

7. The body roof strengthening structure according to claim �, characterized in that: Extension arms (33) are respectively provided on the left and right sides of the front end of the reinforcing plate main body (31), each side of the extension arms (33) extends along the left-right direction of the whole vehicle and is connected to the adjacent main body part (311); The extension arms (33) on each side are provided with an upward bulge, and the inner cavities of the extension arms (33) on each side are communicated with the inner cavities of the main body (311) adjacent thereto, and / or a connecting plate body (34) is arranged between the extension arms (33) on each side and the main body (311) adjacent thereto, and the connecting plate body (34) is provided with a door hinge mounting hole (341).

8. The roof reinforcement structure according to any one of claims 1 to 7, characterized in that: The reinforcing plate (3) is integrally formed, and / or the reinforcing plate (3) is made of carbon fiber composite material.

9. A roof assembly of a vehicle body, characterized in that: It comprises a roof outer panel (1) and a roof inner panel (2) that are buckled together, and the roof reinforcement structure according to any one of claims 1 to 8 between the roof outer panel (1) and the roof inner panel (2).

10. The roof assembly of a vehicle body according to claim 9, characterized in that: The roof outer panel (1) and the roof inner panel (2) are both made of carbon fiber composite material, and the roof outer panel (1) and the reinforcing plate (3) are adhesively connected, and the roof inner panel (2) and the reinforcing plate (3) are adhesively connected.

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