Top cover front cross beam and side wall connecting structure and vehicle

Abstract

The utility model provides a top cover front beam and side wall connecting structure and a vehicle, which belong to the technical field of vehicles, comprise a top cover front beam assembly and a side wall assembly, and are characterized in that the end part of the top cover front beam assembly is fixedly connected with the side wall assembly, and is provided with an extension section extending towards one side of the side wall assembly; the lower end face of the extending section is in lap joint with the upper end of the side wall assembly and connected with the upper end of the side wall assembly through a first sealant layer, and a second sealant layer is smeared at the joint of the end of the extending section and the side wall assembly. When a car roof laser radar is arranged on the car roof, the top cover front cross beam and side wall connecting structure can achieve two waterproof seals at the connecting position of the top cover front cross beam assembly and the side wall assembly through the first sealing glue layer and the second sealing glue layer respectively, the waterproof effect is improved, and the requirements that the car roof laser radar is arranged on the car roof and the car roof laser radar is not arranged on the car roof are met. An exterior trimming part is adopted to cover the top cover front cross beam, and the connecting position of the top cover front cross beam and the side wall needs to be waterproof.

Description

Technical Field

[0001] The utility model belongs to the technical field of vehicles, and more specifically relates to a connecting structure of a front cross beam of a roof and a side panel, and a vehicle. Background Art

[0002] The conventional front cross beam assembly of a car roof is covered with a roof outer panel. Since the front cross beam assembly of the roof is covered with the roof outer panel, there is generally no need for waterproofing.

[0003] However, when a roof-mounted laser radar is arranged on the roof, the overlapping position of the roof front cross beam assembly and the side panel assembly is covered by exterior trim, which does not have a waterproof function. Water will enter the connection between the roof front cross beam assembly and the side panel assembly. Therefore, the traditional structure of the roof front cross beam and the side panel connection structure cannot meet the use requirements. Utility Model Content

[0004] The purpose of the utility model is to provide a roof front cross beam and side panel connection structure, aiming to solve the problem that water may enter the connection between the roof front cross beam assembly and the side panel assembly when a roof laser radar is arranged on the roof.

[0005] To achieve the above-mentioned purpose, the technical solution adopted by the utility model is: to provide a roof cover front cross beam and side panel connection structure, including a roof cover front cross beam assembly and a side panel assembly, the end of the roof cover front cross beam assembly is fixedly connected to the side panel assembly, the end of the roof cover front cross beam assembly has an extension section extending toward one side of the side panel assembly, the lower end surface of the extension section overlaps the upper end of the side panel assembly and is connected through a first sealant layer, and the joint between the end of the extension section and the side panel assembly is coated with a second sealant layer.

[0006] In a possible implementation, the roof cover front cross beam assembly includes a roof cover front cross beam upper plate and a roof cover front cross beam lower plate that are overlapped and welded together, and the ends of the roof cover front cross beam upper plate and the ends of the roof cover front cross beam lower plate are respectively fixedly connected to the side enclosure assembly, and the extension section is located at the end of the roof cover front cross beam upper plate and extends toward one side of the side enclosure assembly.

[0007] In a possible implementation, the middle portion of the lower plate of the front cross beam of the roof cover in the width direction is recessed downward to form an energy absorbing chamber between the upper plate of the front cross beam of the roof cover and the lower plate of the front cross beam of the roof cover.

[0008] In a possible implementation, the top cover front cross beam upper plate and the extension section are integrally formed.

[0009] In a possible implementation, the side panel assembly includes a side panel inner panel and a side panel outer panel, the side panel inner panel is respectively provided with a side panel connecting plate and a side panel reinforcement plate facing the inner side of the vehicle body, the side panel outer panel, the side panel reinforcement plate and the side panel connecting plate are welded and fixed in sequence from top to bottom, the end of the upper plate of the top cover front cross beam is fixedly connected to the side panel reinforcement plate, the end of the lower plate of the top cover front cross beam is fixedly connected to the side panel connecting plate, and the lower end surface of the extension section overlaps the upper end surface of the side panel outer panel.

[0010] In a possible implementation, a plurality of first welding points are provided between the end of the upper plate of the front cross beam of the roof cover and the side panel reinforcement plate, and the plurality of first welding points are arranged in sequence along the width direction of the upper plate of the front cross beam of the roof cover.

[0011] In a possible implementation, a plurality of second welding points are provided between the end of the lower plate of the front cross beam of the roof cover and the side panel connecting plate, and the plurality of second welding points are symmetrically arranged in pairs on both sides of the lower plate of the front cross beam of the roof cover in the width direction.

[0012] In a possible implementation, one end of the side panel connecting plate facing the inner side of the vehicle body is connected to the end of the lower plate of the front cross beam of the roof by bolts.

[0013] In a possible implementation, the first sealant layer is a structural sealant, and the second sealant layer is a waterproof sealant.

[0014] The beneficial effect of the roof front cross beam and side enclosure connection structure provided by the utility model is that: compared with the prior art, the end of the roof front cross beam assembly is fixedly connected to the side enclosure assembly, and the lower end surface of the extension section located at the end of the roof front cross beam assembly overlaps the upper end of the side enclosure assembly to form an overlap surface between the two, and the overlap surface adopts a first sealing adhesive layer to achieve a sealed connection; at the same time, the junction between the end of the extension section and the side enclosure assembly is coated with a second sealing adhesive layer for sealing. When a roof lid laser radar is arranged on the roof, the roof front cross beam and side enclosure connection structure provided by the utility model is adopted, and two waterproof seals can be achieved at the connection between the roof front cross beam assembly and the side enclosure assembly using the first sealing adhesive layer and the second sealing adhesive layer, respectively, to improve the waterproof effect and prevent water from entering.

[0015] The utility model also provides a vehicle, comprising the above-mentioned roof front cross beam and side enclosure connection structure.

[0016] The beneficial effect of a vehicle provided by the utility model is that: compared with the prior art, due to the use of the above-mentioned roof front cross beam and side wall connection structure, it has the same beneficial effect as the roof front cross beam and side wall connection structure. When a roof laser radar is arranged on the roof, a roof front cross beam and side wall connection structure provided by the utility model is adopted, which can achieve two waterproof seals at the connection between the roof front cross beam assembly and the side wall assembly by using the first sealing glue layer and the second sealing glue layer respectively, thereby improving the waterproof effect and preventing water from entering. Specifically, it can be applied to SUV models. At the same time, this structure can also be extended to other models with roof laser radars, and has strong scalability. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 A schematic diagram of the structure of the front crossbeam assembly of the top cover provided by the utility model;

[0019] Figure 2 A schematic diagram of the structure of the side panel assembly provided by the utility model;

[0020] Figure 3 A top view of a connecting structure between a front crossbeam of a roof and a side panel provided by the utility model;

[0021] Figure 4 A bottom view of a connecting structure between a front crossbeam of a roof and a side panel provided by the utility model;

[0022] Figure 5 This is a cross-sectional view of the connection structure between the front cross beam of the top cover and the side enclosure provided by the utility model.

[0023] Description of reference numerals:

[0024] 100. Top cover front crossbeam assembly; 110. Top cover front crossbeam upper plate; 120. Top cover front crossbeam lower plate; 130. Extension section; 200. Side enclosure assembly; 210. Side enclosure outer plate; 220. Side enclosure inner plate; 230. Side enclosure reinforcement plate; 240. Side enclosure connecting plate; 300. First welding point; 400. Second welding point; 500. Bolts; 600. Structural adhesive; 700. Waterproof sealant. DETAILED DESCRIPTION

[0025] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0026] See also Figures 1 to 5 Now, a roof front cross beam and side panel connection structure provided by the utility model is described. A roof front cross beam and side panel connection structure includes a roof front cross beam assembly 100 and a side panel assembly 200. The end of the roof front cross beam assembly 100 is fixedly connected to the side panel assembly 200. The end of the roof front cross beam assembly 100 is provided with an extension section 130 extending toward one side of the side panel assembly 200. The lower end surface of the extension section 130 overlaps the upper end of the side panel assembly 200 and is connected through a first sealant layer. The junction between the end of the extension section 130 and the side panel assembly 200 is coated with a second sealant layer.

[0027] The utility model provides a roof front cross beam and side enclosure connection structure. Compared with the prior art, the end of the roof front cross beam assembly 100 is fixedly connected to the side enclosure assembly 200. The lower end surface of the extension section 130 located at the end of the roof front cross beam assembly 100 overlaps the upper end of the side enclosure assembly 200 to form an overlap surface between the two. The overlap surface uses a first sealant layer to achieve a sealed connection; at the same time, a second sealant layer is applied to the junction between the end of the extension section 130 and the side enclosure assembly 200 for sealing. When a roof laser radar is arranged on the roof, the roof front cross beam and side enclosure connection structure provided by the utility model is used. The first sealant layer and the second sealant layer can be used to achieve two waterproof seals at the junction of the roof front cross beam assembly 100 and the side enclosure assembly 200, respectively, to improve the waterproof effect and prevent water from entering.

[0028] Among them, the roof front cross beam assembly 100 is arranged at the front top of the vehicle body along the Y direction, and the side panel assembly 200 is arranged on both sides of the vehicle body along the X direction. The roof front cross beam assembly 100 and the side panel assembly 200 are arranged along the curvature of the top of the vehicle body, and the two ends of the roof front cross beam assembly 100 are respectively connected to the two side panel assemblies 200 to form a supporting structure of the roof.

[0029] See also Figure 1 The top cover front cross beam assembly 100 includes a top cover front cross beam upper plate 110 and a top cover front cross beam lower plate 120 which are overlapped and welded and fixed. The ends of the top cover front cross beam upper plate 110 and the ends of the top cover front cross beam lower plate 120 are respectively fixedly connected to the side enclosure assembly 200, and the extension section 130 is located at the end of the top cover front cross beam upper plate 110 and extends toward one side of the side enclosure assembly 200.

[0030] Specifically, the upper plate 110 of the front cross beam of the roof and the lower plate 120 of the front cross beam of the roof are both sheet metal components. The length of the upper plate 110 of the front cross beam of the roof is greater than that of the lower plate 120 of the front cross beam of the roof. The lower plate 120 of the front cross beam of the roof is located in the middle of the upper plate 110 of the front cross beam of the roof. Both ends of the upper plate 110 of the front cross beam of the roof form the above-mentioned extension sections 130, which are an integral structure with the upper plate 110 of the front cross beam of the roof. The upper plate 110 of the front cross beam of the roof and the lower plate 120 of the front cross beam of the roof overlap each other and are welded together by resistance welding to form the upper plate 100 of the front cross beam of the roof. In addition, the middle portion of the lower plate 120 of the front cross beam of the top cover is recessed in the width direction to form an energy absorption chamber between the upper plate 110 of the front cross beam of the top cover and the lower plate 120 of the front cross beam of the top cover. The existence of the energy absorption chamber can increase the structural strength of the front cross beam assembly 100 of the top cover itself, and at the same time make it have a certain vibration reduction effect. The cross section of the energy absorption chamber is a trapezoidal structure, and the width of the energy absorption chamber gradually decreases from top to bottom. The two sides of the lower plate 120 of the front cross beam of the top cover in the width direction are respectively bonded to the upper plate 110 of the front cross beam of the top cover and connected by resistance welding. Of course, the cross section of the energy absorption chamber can also be a triangular structure, a rectangular structure or other polygonal structure as a whole, but generally the number of sides of the polygon cannot exceed six, which can reduce the difficulty of forming while also enabling the energy absorption chamber to have sufficient anti-deformation ability.

[0031] Optionally, in order to increase the structural strength of the energy absorbing chamber itself and prevent it from collapsing, reinforcing ribs are arranged along the length direction of the top cover front cross beam upper plate 110 and the top cover front cross beam lower plate 120, and multiple reinforcing ribs can be arranged side by side. The multiple reinforcing ribs are stamped and formed together with the top cover front cross beam upper plate 110 and the top cover front cross beam lower plate 120.

[0032] At the same time, the downward recessed structure of the lower plate 120 of the front cross beam of the top cover is also stamped and formed. During the stamping process, large process holes and process bosses need to be stamped and formed together. At the same time, transition fillets are reserved at the bending parts of the downward recessed structure, which can reduce the stress of the energy absorption chamber itself and reduce its deformation tendency after being subjected to force.

[0033] Please refer to Figure 3 and Figure 4 The side panel assembly 200 includes a side panel inner panel 220 and a side panel outer panel 210. The side panel inner panel 220 is provided with a side panel connecting plate 240 and a side panel reinforcing plate 230 toward the inner side of the vehicle body. The side panel outer panel 210, the side panel reinforcing plate 230 and the side panel connecting plate 240 are welded and fixed in sequence from top to bottom. The end of the upper plate 110 of the front cross beam of the roof is fixedly connected to the side panel reinforcing plate 230, the end of the lower plate 120 of the front cross beam of the roof is fixedly connected to the side panel connecting plate 240, and the lower end surface of the extension section 130 is overlapped with the upper end surface of the side panel outer panel 210.

[0034] Specifically, the side panel outer panel 210 and the side panel inner panel 220 are overlapped with each other from the outside to the inside and are welded together by resistance welding. The side panel outer panel 210 and the side panel inner panel 220 both have a top flange structure. The top flange of the side panel outer panel 210 is overlapped above the top flange of the side panel inner panel 220. The side panel reinforcement plate 230 is located between the two top flanges and welded and fixed, and the side panel connecting plate 240 is welded to the side panel inner panel 220, thereby forming a structure in which the side panel outer panel 210, the side panel reinforcement plate 230, and the side panel connecting plate 240 are distributed from top to bottom. All three extend toward the inside of the vehicle body. The extension length of the side panel reinforcement plate 230 is greater than the extension length of the top flange of the side panel outer panel 210, and the extension length of the side panel connecting plate 240 is greater than the extension length of the side panel reinforcement plate 230, thereby making the side panel connecting plate 240, the side panel reinforcement plate 230 and the side panel outer panel 210 arranged in sequence from the inside to the outside. At this time, one end of the top cover front crossbeam upper plate 110 is overlapped on the side enclosure connecting plate 240, the side enclosure reinforcing plate 230 and the upper end surface of the side enclosure outer plate 210 extending inwardly.

[0035] Among them, the width of the extension section 130 is greater than the width of the upper plate 110 of the front cross beam of the roof, which can increase the overlap area between the extension section 130 and the side outer panel 210, thereby increasing the effective area of ​​the glue coating area and improving the connection structural strength between the extension section 130 and the side outer panel 210.

[0036] When the end of the roof front cross beam assembly 100 overlaps the side panel assembly 200, the roof front cross beam upper plate 110 overlaps the upper end surface of the side panel reinforcement plate 230 and is welded and fixed. There are multiple first welding points 300 between the roof front cross beam upper plate 110 and the side panel reinforcement plate 230. The multiple first welding points 300 are arranged in sequence along the width direction of the roof front cross beam upper plate 110. In order to ensure the strength of the welding between the roof front cross beam upper plate 110 and the side panel reinforcement plate 230, at least three first welding points 300 are required. The distances between the three first welding points 300 are kept as the same as possible, so that the spacings between adjacent welding points are kept as the same as possible. While ensuring the welding strength, the deformation of the roof front cross beam upper plate 110 and the side panel reinforcement plate 230 caused by the concentrated welding heat can also be reduced. From the outside, a welding plane is reserved in the width direction of the top cover front cross beam upper plate 110 and the side enclosure reinforcement plate 230, and a plurality of first welding points 300 are welded at the position where the welding plane is located. At this time, the extension section 130 at the end of the top cover front cross beam upper plate 110 is overlapped on the upper end surface of the top flange of the side enclosure outer plate 210 at the same time, and the overlap surface formed by the top cover front cross beam upper plate 110 and the side enclosure outer plate 210 is connected by a first sealing adhesive layer, and the joint between the end of the extension section 130 and the upper end surface of the top flange of the side enclosure outer plate 210 is coated with a second sealing adhesive layer to form two waterproof sealing structures.

[0037] Before welding the top cover front cross beam upper plate 110 and the side enclosure reinforcement plate 230, sealant is applied to the lower end surface of the top cover front cross beam upper plate 110 and the upper end surface of the side enclosure reinforcement plate 230. After welding is completed, the lower end surface of the top cover front cross beam upper plate 110 and the upper end surface of the side enclosure reinforcement plate 230 are close to each other, thereby pressing the sealant between the two, and then forming the above-mentioned first sealant layer. After welding is completed, the extension section 130 of the top cover front cross beam upper plate 110 overlaps the upper end surface of the top flange of the side enclosure outer plate 210, and the sealant is applied along the width direction of the outer end of the extension section 130, so that the sealant penetrates into the gap at the junction of the extension section 130 and the side enclosure outer plate 210, thereby forming the second sealant layer.

[0038] When the end of the roof front cross beam assembly 100 is overlapped on the side enclosure assembly 200, the roof front cross beam lower plate 120 is overlapped on the upper end surface of the side enclosure connecting plate 240 and welded and fixed. There are multiple second welding points 400 between the end of the roof front cross beam lower plate 120 and the side enclosure connecting plate 240. The multiple second welding points 400 are symmetrically arranged on both sides of the width direction of the roof front cross beam lower plate 120. The number of second welding points 400 on each side is multiple. Among the multiple second welding points 400 on the same side, the spacing between two adjacent second welding points 400 is kept as the same as possible. While ensuring the welding strength, it can also reduce the problem of deformation of the roof front cross beam lower plate 120 and the side enclosure connecting plate 240 caused by concentrated welding heat. From the outside, welding planes are reserved on both sides of the width direction of the ends of the roof front cross beam lower plate 120 and the side enclosure connecting plate 240, and the multiple second welding points 400 are welded at the positions where the welding planes are located. Among them, the middle part of the width direction of the side panel connecting plate 240 is recessed downward, and the downward recessed structure of the side panel connecting plate 240 is adapted to the structure of the lower plate 120 of the front cross beam of the roof, and the two can be well adapted.

[0039] In addition, one end of the side panel connecting plate 240 facing the inner side of the vehicle body is also connected to the end of the lower plate 120 of the front cross beam of the roof for a second time by means of bolts 500 to improve the structural strength between the two.

[0040] Specifically, multiple bolts 500 are arranged at intervals along the width direction of the lower plate 120 of the front cross beam of the roof, and the side panel connecting plate 240 and the lower plate 120 of the front cross beam of the roof are reinforced at the same time to avoid deformation of the two due to insufficient connection strength. In particular, a mounting plane is set in the area where the lower plate 120 of the front cross beam of the roof is connected to multiple bolts 500, and the mounting plane can protrude from the lower plate 120 of the front cross beam of the roof. Correspondingly, a corresponding mounting plane is also set in the area where the bolts 500 are connected to the side panel connecting plate 240. The two mounting planes fit each other to form a good matching relationship, and at the same time, deformation of the lower plate 120 of the front cross beam of the roof and the side panel connecting plate 240 is avoided due to unevenness in the corresponding connection areas of the lower plate 120 of the front cross beam of the roof and the side panel connecting plate 240 during the process of tightening the bolts 500.

[0041] Preferably, the first sealant layer is structural adhesive 600, which is a kind of adhesive with high strength, capable of bearing large loads, suitable for bonding strong structural parts, and has the characteristics of aging resistance, fatigue resistance, corrosion resistance, impact resistance, peeling resistance, etc., stable performance within the expected life, and simple construction process. Structural adhesive 600 refers to an adhesive with high strength (compression strength>65MPa, steel-steel positive tensile bonding strength>30MPa, shear strength>18MPa), capable of bearing large loads, suitable for bonding strong structural parts, and has the characteristics of aging resistance, fatigue resistance, corrosion resistance, impact resistance, stable performance within the expected life, etc.

[0042] Preferably, the second sealant layer is waterproof sealant 700, which is a sealing material that deforms with the shape of the sealing surface, is not easy to flow, and has a certain degree of adhesion. It is usually made of dry or non-dry viscous materials such as asphalt, natural resin or synthetic resin, natural rubber or synthetic rubber, etc.; it is made by adding inert fillers such as talcum powder, white clay, carbon black, titanium dioxide and asbestos, and then adding plasticizers, solvents, curing agents, accelerators, etc. Waterproof sealant 700 is an adhesive used to fill the gap of the configuration to play a sealing role, and has the functions of preventing leakage, waterproofing, vibration prevention, sound insulation, heat insulation, etc.

[0043] Based on the same concept, the utility model also provides a vehicle, using the above-mentioned roof front cross beam and side panel connection structure. When a roof laser radar is arranged on the roof, a roof front cross beam and side panel connection structure provided by the utility model is adopted, which can achieve two waterproof seals at the connection between the roof front cross beam assembly 100 and the side panel assembly 200 using a first sealing adhesive layer and a second sealing adhesive layer respectively, thereby improving the waterproof effect and preventing water from entering. Specifically, it can be applied to SUV models. At the same time, this structure can also be extended to other models with roof laser radars, and has strong scalability.

[0044] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A roof front crossbeam and side panel connection structure, comprising a roof front crossbeam assembly (100) and a side panel assembly (200), characterized in that: The end of the top cover front cross beam assembly (100) is fixedly connected to the side enclosure assembly (200), and the end of the top cover front cross beam assembly (100) is provided with an extension section (130) extending toward one side of the side enclosure assembly (200), the lower end surface of the extension section (130) overlaps the upper end of the side enclosure assembly (200) and is connected via a first sealant layer, and a second sealant layer is applied at the junction between the end of the extension section (130) and the side enclosure assembly (200).

2. A roof front crossbeam and side panel connection structure as claimed in claim 1, characterized in that: The top cover front cross beam assembly (100) comprises a top cover front cross beam upper plate (110) and a top cover front cross beam lower plate (120) which are overlapped and fixed by welding, the end of the top cover front cross beam upper plate (110) and the end of the top cover front cross beam lower plate (120) are respectively fixedly connected to the side enclosure assembly (200), and the extension section (130) is located at the end of the top cover front cross beam upper plate (110) and extends toward one side of the side enclosure assembly (200).

3. A roof front cross beam and side panel connection structure as claimed in claim 2, characterized in that: The middle portion of the lower plate (120) of the front cross beam of the roof cover in the width direction is recessed downwards to form an energy absorbing chamber between the upper plate (110) of the front cross beam of the roof cover and the lower plate (120) of the front cross beam of the roof cover.

4. A roof front cross beam and side panel connection structure as claimed in claim 2, characterized in that: The top cover front crossbeam upper plate (110) and the extension section (130) are integrally formed.

5. A roof front crossbeam and side panel connection structure as claimed in claim 2, characterized in that: The side enclosure assembly (200) comprises a side enclosure inner plate (220) and a side enclosure outer plate (210); the side enclosure inner plate (220) is provided with a side enclosure connecting plate (240) and a side enclosure reinforcing plate (230) facing the inner side of the vehicle body; the side enclosure outer plate (210), the side enclosure reinforcing plate (230) and the side enclosure connecting plate (240) are welded and fixed in sequence from top to bottom; the end of the top cover front cross beam upper plate (110) is fixedly connected to the side enclosure reinforcing plate (230); the end of the top cover front cross beam lower plate (120) is fixedly connected to the side enclosure connecting plate (240); and the lower end surface of the extension section (130) is overlapped with the upper end surface of the side enclosure outer plate (210).

6. A roof front cross beam and side panel connection structure as claimed in claim 5, characterized in that: A plurality of first welding points (300) are provided between the end of the top cover front cross beam upper plate (110) and the side enclosure reinforcement plate (230), and the plurality of first welding points (300) are arranged in sequence along the width direction of the top cover front cross beam upper plate (110).

7. A roof front crossbeam and side panel connection structure as claimed in claim 5, characterized in that: A plurality of second welding points (400) are provided between the end of the lower plate (120) of the front cross beam of the roof and the side enclosure connecting plate (240), and the plurality of second welding points (400) are symmetrically arranged in pairs on both sides of the lower plate (120) of the front cross beam of the roof in the width direction.

8. A roof front cross beam and side panel connection structure as claimed in claim 7, characterized in that: One end of the side enclosure connecting plate (240) facing the inner side of the vehicle body is connected to the end of the top cover front cross beam lower plate (120) via a bolt (500).

9. A roof front cross beam and side panel connection structure according to any one of claims 1 to 8, characterized in that: The first sealant layer is a structural sealant (600), and the second sealant layer is a waterproof sealant (700).

10. A vehicle, characterized in that: It comprises a roof front cross beam and side panel connection structure as described in any one of claims 1 to 9.

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