A roof structure and vehicle body with laser radar

Abstract

The present application relates to a roof structure and vehicle body equipped with a laser radar. A recessed portion of the exposed surface of the roof outer panel includes a first stepped surface and a second stepped surface disposed vertically above and below. A portion of the second stepped surface serves as a radar mounting surface for connecting the radar assembly. The remaining portion is recessed to form a drainage groove. A radar decorative cover covers and connects to a portion of the first stepped surface and the windshield overlapped by the roof outer panel. A sealing structure on the inner wall of the cover, located near the front of the vehicle, includes a drainage groove corresponding to the drainage groove. If the sealing structure leaks, water entering the recessed portion will collect in the drainage groove at the lowest point of the recessed portion. The accumulated water and moisture in the drainage groove will then be discharged to the exterior of the vehicle through the drainage groove. Furthermore, the radar assembly is located within the recessed portion, and a portion of the radar decorative cover is also located within the recessed portion relative to the raised height of the roof's exterior surface. Ultimately, the radar decorative cover can be integrated with the overall vehicle exterior, thereby reducing wind resistance.

Description

Technical Field

[0001] The present application relates to the technical field of automobile bodies, and in particular to a roof structure and a vehicle body with a laser radar. Background Art

[0002] The electrification, networking, and intelligentization of automobiles are accelerating. LiDAR is one of the core detection components of intelligent driving. Currently, mass-produced vehicles generally have the LiDAR and its decorative cover fixed to the roof. Due to the technical complexity and high cost of LiDAR, the available sizes and structures are limited. However, regardless of the type of LiDAR, it has various performance requirements for the installation environment, including stiffness, strength, modality, sealing, and thermal conductivity. Currently, the vast majority of LiDAR-equipped vehicles have glass roof structures, meaning that LiDAR-equipped vehicles no longer have a traditional metal roof. The LiDAR is installed on the roof, essentially on the front crossbar of the roof. Specifically, the LiDAR is mounted on the steel crossbar at the front of the roof.

[0003] In related technologies, the radar cover floats entirely above the roof panel, protruding from it. This creates an abrupt appearance, and the step formed on the windward side increases wind resistance. High-speed airflow also allows water to easily enter the sealing foam at the front of the cover. The radar cover and lidar form a small assembly, connected to the roof crossbeam at the bottom and bonded to the roof panel at the top. The height of the cavity between the roof panel and the crossbeam fluctuates significantly, resulting in unstable compression of the foam between the radar cover and the roof panel. This can easily lead to insufficient compression, causing water ingress, or excessive compression, causing deformation of the roof panel.

[0004] In other related technologies, the rear and sides of the radar decorative cover are sealed to the car body roof with 3M tape, and the front is bonded to the car body with structural adhesive. The bonding structure makes the decorative cover unable to be removed after sales; the decorative cover is rectangular as a whole and has a long perimeter. Although it is sealed with 3M tape, the longer the sealing area, the greater the risk of leakage; the U-shaped groove structure of the front crossbeam of the car body roof has the lowest point, which will cause water accumulation in the laser radar; in a closed cavity, the accumulated water will form water vapor, thereby affecting the operation of the laser radar; in addition, in the above sealing schemes, when the seal fails locally, the water accumulated in the radar working area is difficult to discharge. Summary of the Invention

[0005] The embodiments of the present application provide a roof structure and a vehicle body with a laser radar to solve the problem in the related art that the sealing area of ​​the radar decorative cover has the risk of water leakage and the accumulated water is difficult to drain.

[0006] In a first aspect, a top cover structure with a laser radar is provided, comprising:

[0007] The top cover outer panel includes a front windshield overlap surface and an exposed surface, with a pit provided in the middle of the exposed surface; the pit includes a first step surface and a second step surface arranged above and below; a portion of the second step surface is a radar mounting surface, and the remaining area is recessed to form a drainage groove;

[0008] a radar assembly connected to the radar mounting surface;

[0009] The radar decorative cover covers and is connected to a portion of the area of ​​the first step surface and the overlapping surface of the windshield, and the sealing structure of the inner wall thereof is provided with a drainage groove opening corresponding to the drainage groove on the side close to the front of the vehicle.

[0010] In some embodiments, in the direction toward the front of the vehicle, the first step surface and the second step surface on a side close to the front of the vehicle are coplanar with and parallel to the overlapped surface of the windshield; the height of the first step surface and the second step surface on a side close to the front of the vehicle is lower than the height of the first step surface and the second step surface on a side away from the front of the vehicle;

[0011] The radar installation surface is provided in the middle of the second step surface, and the drainage grooves are provided on both sides of the radar installation surface in the width direction of the roof;

[0012] The height of the radar installation surface in the middle area of ​​the second step surface is higher than that of the remaining areas; in the width direction of the roof, the height of the remaining areas gradually decreases from both sides of the second step surface to the drainage groove.

[0013] In some embodiments, the radar decorative cover includes an outer panel and an inner panel;

[0014] The sealing structure includes a rubber sealing strip and a foam sealing strip; the rubber sealing strip is C-shaped; the rubber sealing strip is connected to the left and right sides of the inner panel, as well as the side of the inner panel away from the front of the vehicle;

[0015] The foam sealing strip includes a first part, a second part and a third part; the first part is conformally arranged with the rubber sealing strip and is located in the area surrounded by the rubber sealing strip, and the second part and the third part are connected to the side of the inner panel close to the front of the vehicle; the second part is respectively provided with a third part on both sides in the width direction of the roof, and the third part is connected to the first part; the drainage groove is formed between the second part and the third part.

[0016] In some embodiments, the radar mounting surface is provided with a radar mounting plate connection hole;

[0017] The radar assembly includes a radar mounting plate and a radar body; the radar mounting plate is provided with a first fixing hole corresponding to the radar mounting plate connection hole; the radar body is connected to the radar mounting plate connection hole and the first fixing hole by bolts; the radar mounting plate is further provided with a radar body connection hole; the radar body is connected to the radar body connection hole and the radar mounting plate by bolts; a thermal pad is provided at the bottom of the radar mounting plate;

[0018] The bottom of the bolt connecting the connecting hole of the radar body and the radar mounting plate extends into the drainage groove, and there is a gap between the bottom end of the bolt and the bottom wall of the drainage groove.

[0019] In some embodiments, a second fixing hole is provided on the first step surface; the second step surface is located on one side of the windshield overlap surface, and a third fixing hole is provided near the second fixing hole; a first wiring harness passage hole is provided on the second step surface;

[0020] The inner wall of the inner plate is fixedly provided with a connecting nut corresponding to the second fixing hole, and a positioning column corresponding to the third fixing hole.

[0021] In some embodiments, the roof structure with the laser radar further includes a crossbeam inner plate, wherein a first flange surface is provided on a side of the crossbeam inner plate away from the front of the vehicle, and a second flange surface is provided on a side of the crossbeam inner plate close to the front of the vehicle; the first flange surface is connected to a sunroof reinforcement ring;

[0022] The middle portion of the crossbeam inner plate is connected to the crossbeam outer plate, and the crossbeam outer plate is connected to the bottom of the pit;

[0023] The roof outer panel covers the crossbeam inner panel, the skylight reinforcement ring and the crossbeam outer panel.

[0024] In some embodiments, a first connecting plane corresponding to the radar mounting surface is provided in the middle portion of the crossbeam outer plate, and a first through hole corresponding to the first fixing hole is provided on the first connecting plane; second connecting planes corresponding to the first step surface are provided on both sides of the crossbeam outer plate in the width direction of the roof, and a second through hole and a third through hole corresponding to the second fixing hole and the third fixing hole are provided on the second connecting plane;

[0025] The inner plate of the beam is provided with a fourth through hole and a fifth through hole corresponding to the second fixing hole and the second through hole; the inner plate of the beam is provided with a third connecting plane connected to the bottom of the outer plate of the beam; the inner plate of the beam and the outer plate of the beam are both provided with a second wiring harness through hole.

[0026] In some embodiments, a sunroof mechanism avoidance hole is provided on a side of the inner plate of the crossbeam away from the front of the vehicle; positioning portions are provided on both sides of the sunroof mechanism avoidance hole in the width direction of the vehicle roof, and the positioning portions are also provided with the fourth through hole;

[0027] The skylight reinforcement ring is provided with a positioning notch corresponding to the positioning portion.

[0028] In a second aspect, a vehicle body is provided, comprising:

[0029] A top cover structure with a laser radar;

[0030] The top of the front windshield is connected to the front windshield overlap surface, and the bottom of the front windshield and both sides in the width direction of the vehicle body are connected to the vehicle body pillars and the front cabin of the vehicle body.

[0031] In some embodiments, the front windshield and the front windshield overlap surface, the vehicle body pillar and the vehicle body front cabin are sealed and connected by glass glue; a sealing strip is provided on the upper side of the glass glue and located between the front windshield and the front windshield overlap surface;

[0032] The lip of the sealing strip is located between the radar decorative cover and the top of the front windshield, and contacts the radar decorative cover to form a drainage channel arranged along the width direction of the roof;

[0033] The height of the horizontal plane where the second step surface is connected to the overlapping surface of the front windshield is greater than the height of the horizontal plane where the top upper edge of the front windshield is located.

[0034] The beneficial effects of the technical solution provided by this application include:

[0035] An embodiment of the present application provides a top cover structure and a vehicle body with a laser radar. Since the top cover outer panel 1 includes a windshield overlapping surface 1a and an exposed surface, a pit is provided in the middle of the exposed surface; the pit includes a first step surface 1b and a second step surface 1c arranged upper and lower; a part of the area on the second step surface 1c is a radar installation surface 1e, and the remaining area is recessed to form a drainage groove 1d; the radar component 4 is connected to the radar installation surface 1e; the radar decorative cover 3 covers and is connected to a part of the first step surface 1b and the windshield overlapping surface 1a, and the sealing structure of its inner wall is provided with a drainage groove opening corresponding to the drainage groove 1d on the side close to the front of the vehicle. Through the above structural setting, when there is a water leak in the sealing structure, water entering the pit will gather in the drainage groove 1d at the lowest point of the pit, and the accumulated water and water vapor in the drainage groove 1d will be discharged to the outside of the vehicle through the corresponding drainage groove opening; furthermore, the radar component 4 is located in the pit, and relative to the raised height of the roof surface, part of the radar decorative cover 3 is also located in the pit. Finally, most of the area of ​​the radar decorative cover 3 can be integrated with the appearance of the entire vehicle, thereby reducing wind resistance. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0037] Figure 1 A schematic diagram of the overall structure of a top cover structure with a laser radar provided in an embodiment of the present application;

[0038] Figure 2 An exploded schematic diagram of a top cover structure with a laser radar provided in an embodiment of the present application;

[0039] Figure 3 A schematic structural diagram of a front windshield connected to a top cover structure provided in an embodiment of the present application;

[0040] Figure 4 A schematic diagram of the structure of the top cover outer plate and the pit provided in an embodiment of the present application;

[0041] Figure 5 A schematic diagram of the connection between the radar decorative cover and the radar assembly provided in an embodiment of the present application;

[0042] Figure 6 Provided in the embodiments of this application Figure 5 An exploded schematic diagram of the radar trim cover and radar assembly is shown;

[0043] Figure 7 A top view of a radar assembly mounted on an outer panel of a top cover provided in an embodiment of the present application;

[0044] Figure 8 Provided in the embodiments of this application Figure 7 A schematic diagram of the AA section after the roof outer panel, radar trim, and windshield are connected from the perspective shown;

[0045] Figure 9 Provided in the embodiments of this application Figure 7 Schematic diagram of the BB section after the roof outer panel, radar decoration, and windshield are connected from the perspective shown;

[0046] Figure 10 Provided in the embodiments of this application Figure 9 The enlarged schematic diagram of the detail P in the middle figure;

[0047] Figure 11 An exploded schematic diagram of a structure formed by connecting a roof outer panel, a crossbeam inner panel, a skylight reinforcement ring, and a crossbeam outer panel according to an embodiment of the present application;

[0048] Figure 12Attached view of the crossbeam inner plate, skylight reinforcement ring, and crossbeam outer plate provided in the embodiment of the present application;

[0049] Figure 13 A top view of the connection between the inner crossbeam plate, the sunroof reinforcement ring, the outer crossbeam plate, and the front windshield provided in an embodiment of the present application;

[0050] Figure 14 Provided in the embodiments of this application Figure 13 Schematic diagram of the DD section after the roof outer panel, cross member inner panel, sunroof reinforcement ring, cross member outer panel, and front windshield are connected from the perspective shown;

[0051] Figure 15 Provided in the embodiments of this application Figure 13 Schematic diagram of the CC section after the roof outer panel, cross member inner panel, sunroof reinforcement ring, cross member outer panel, and front windshield are connected from the perspective shown;

[0052] Figure 16 The embodiment of this application provides Figure 14 The internal structure shown is a schematic diagram of the flow path S1 of the internal water flow;

[0053] Figure 17 Schematic diagram of the flow paths of two water flow paths S1 and S2 on the vehicle body provided in an embodiment of the present application.

[0054] Figure: 1, top cover outer panel; 101, radar mounting plate connection hole; 102, second fixing hole; 103, third fixing hole; 104, first wiring harness through hole; 1a, front windshield overlap surface; 1b, first step surface; 1c, second step surface; 1d, drainage groove; 1e, radar mounting surface; 2, front windshield; 200, glass glue; 201, sealing strip; 3, radar decorative cover; 301, outer panel; 302, inner panel; 303, rubber sealing strip; 304, foam sealing strip; 305, third part; 306, second part; 307, connecting nut; 308 , first part; 309, positioning column; 4, radar assembly; 400, radar mounting plate; 401, radar body; 402, thermal pad; 403, first fixing hole; 5, beam inner plate; 5a, first flange surface; 5b, second flange surface; 5c, third connection plane; 501, fourth through hole; 502, fifth through hole; 503, sunroof mechanism avoidance hole; 504, positioning part; 6, sunroof reinforcement ring; 601, positioning notch; 7, beam outer plate; 7a, first connection plane; 7b, second connection plane; 701, first through hole; 702, second through hole. DETAILED DESCRIPTION

[0055] To make the purpose, technical solutions, and advantages of the embodiments of this application more clear, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the drawings in the embodiments of this application. Obviously, the described embodiments are part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0056] Because the radar cover floats entirely above the roof panel, protruding from it, it looks abrupt. The step formed on the windward side increases wind resistance, and high-speed airflow easily allows water to enter the sealing foam at the front of the cover. The radar cover and lidar form a small assembly, connected to the roof crossbar at the bottom and bonded to the roof panel at the top. The height of the cavity between the roof panel and the crossbar fluctuates significantly, resulting in unstable compression of the foam between the radar cover and the roof panel. This can easily lead to insufficient compression, causing water ingress, or excessive compression, causing deformation of the roof panel.

[0057] In other related technologies, the rear and sides of the radar decorative cover are sealed to the car body roof with 3M tape, and the front is bonded to the car body with structural adhesive. The bonding structure makes the decorative cover unable to be removed after sales; the decorative cover is rectangular as a whole and has a long perimeter. Although it is sealed with 3M tape, the longer the sealing area, the greater the risk of leakage; the U-shaped groove structure of the front crossbeam of the car body roof has the lowest point, which will cause water accumulation in the laser radar; in a closed cavity, the accumulated water will form water vapor, thereby affecting the operation of the laser radar; in addition, in the above sealing schemes, when the seal fails locally, the water accumulated in the radar working area is difficult to discharge.

[0058] The above issues include:

[0059] (1) The roof outer plate is prone to water ingress due to large fluctuations in cavity height;

[0060] (2) The step formed on the windward side will increase the wind resistance, and under the action of high-speed airflow, the sealing foam at the front of the decorative cover is prone to water ingress.

[0061] (3) There is water accumulation in the laser radar. In a closed cavity, the accumulated water will form water vapor, which will affect the operation of the laser radar. In addition, in the above sealing schemes, when the sealing fails locally, the water accumulated in the radar working area is difficult to drain.

[0062] The following is an explanation of each of the above questions.

[0063] First, in order to solve the problem of difficulty in draining water from the radar working area when a local seal failure occurs, refer to Figures 1-9 , provides a top cover structure with a laser radar, comprising:

[0064] The roof outer panel 1 includes a front windshield overlap surface 1a and an exposed surface, with a recessed portion in the middle of the exposed surface. The recessed portion includes a first stepped surface 1b and a second stepped surface 1c disposed one above the other. A portion of the second stepped surface 1c serves as a radar mounting surface 1e, while the remaining portion is recessed to form a drainage groove 1d.

[0065] A radar assembly 4 connected to the radar mounting surface 1e;

[0066] The radar decorative cover 3 covers and is connected to a portion of the first step surface 1b and the windshield overlap surface 1a, and a sealing structure of its inner wall is provided with a drainage groove opening corresponding to the drainage groove 1d on the side close to the front of the vehicle.

[0067] With the above structural setting, when there is a water leak in the sealing structure, the water entering the pit will be collected in the drainage groove 1d at the lowest part of the pit. The accumulated water and water vapor in the drainage groove 1d will be discharged to the outside of the vehicle through the corresponding drainage notch. In addition, the radar component 4 is located in the pit, and relative to the raised height of the roof surface, part of the radar decorative cover 3 is also located in the pit. Finally, most of the area of ​​the radar decorative cover 3 can be integrated with the appearance of the entire vehicle, thereby reducing wind resistance. You can refer to Figure 2 、 Figure 6 、 Figure 16 and Figure 17 , the structure and water flow schematic diagram are shown.

[0068] refer to Figure 2 、 Figure 7-10 In some preferred embodiments, in order to ensure that the water entering the radar decorative cover 3 and the pit after leakage is collected at the lowest point as much as possible and avoid contact with the radar component 4 as much as possible, the following settings are provided:

[0069] In the direction toward the front of the vehicle, the first step surface 1b and the second step surface 1c are coplanar and parallel to the windshield overlapping surface 1a on the side close to the front of the vehicle; the height of the first step surface 1b and the second step surface 1c on the side close to the front of the vehicle is lower than the height of the first step surface 1b and the second step surface 1c on the side away from the front of the vehicle; in this way, the first step surface 1b and the second step surface 1c as a whole are lower in the front and higher in the back in the length direction of the vehicle body, which makes it easier for water to gather in the drainage groove 1d under the action of gravity and flow to the windshield overlapping surface 1a; however, due to the leakage of the barrier of the sealing structure, water can only be discharged from the drainage groove.

[0070] A radar installation surface 1e is provided in the middle of the second step surface 1c, and drainage grooves 1d are provided on both sides of the radar installation surface 1e in the width direction of the roof;

[0071] The radar mounting surface 1e in the middle of the second stepped surface 1c is higher than the remaining area; along the roof width, the remaining area gradually decreases in height from both sides of the second stepped surface 1c to the drainage groove 1d. This defines the position of the drainage groove 1d, and the height of the second stepped surface 1c decreases toward the middle along the roof width, creating a slope that more easily collects leaking water in the drainage groove 1d.

[0072] The above embodiments of the present invention should be understood as emphasizing that the radar decorative cover 3 is generally D-shaped, with its rear and left and right sides aligned with the roof panel 1. The radar decorative cover 3 and the roof panel 1 are flush on both sides and at the rear. Specifically, according to the design definition, the radar decorative cover 3 is 0-0.5 mm lower than the roof panel 1, ensuring that the radar decorative cover 3 protrudes above the roof panel 1 due to manufacturing tolerances and assembly variations. The middle portion of the front edge of the radar decorative cover 3 protrudes toward the windshield. This protrusion can be caused by limitations in the stamping process for the roof panel, space constraints between the laser radar and the sunroof mechanism, or the need to reduce the laser radar's placement height on the vehicle, which causes the laser radar to shift toward the front of the vehicle, encroaching on the integral seam between the windshield and the roof.

[0073] The top cover outer panel 1 is made of metal, which can be steel or aluminum, and is made using a stamping process. The figure shows the front structure of the top cover outer panel 1. In the middle of the vehicle body, a recess is formed by drawing. The radar assembly 4 and the laser radar harness are encapsulated in the cavity formed by the radar decorative cover 3 and the top cover outer panel 1. The front of the top cover outer panel 1 has a front windshield overlap surface 1a. The recess is closest to the exterior or exposed surface of the top cover outer panel and is an overall C-shaped first step surface 1b. The opening of the first step surface 1b faces the front of the vehicle. The step surface width of the first step surface 1b in the embodiment of the present invention is between 11mm and 30mm. Since the first step surface 1b needs to provide a sealing structure mounting surface for the radar decorative cover 3, a width less than 11mm will result in insufficient width of the sealing ring and insufficient distance between the sealing ring and the fillet of the sheet metal part.

[0074] Furthermore, the height difference between the first step surface 1b and the outer surface of the top cover outer panel, that is, the depth of the first step surface 1b is recommended to be 3mm to 15mm. In order to accommodate the thickness of the inner and outer panels of the radar decorative cover 3 and the thickness of the sealing structure, the depth of the first step surface 1b in this embodiment is 12mm.

[0075] There is a vertical surface on the inner side of the first step surface 1b, and the bottom of the vertical surface has a second step surface 1c. The second step surface 1c has an overall trend of being lower in the front and higher in the back. Furthermore, the recommended inclination angle of the front and rear parts of the second step surface 1c is 3° to 10°. The larger the angle, the more conducive it is to the discharge of water from the surface of the second step surface 1c. However, the maximum height of the second step surface 1c is limited by the angle of the exterior surface of the top cover outer panel 1c and the height of the laser radar harness. The horizontal angle of the second step surface 1c in the embodiment of the present invention is 5°. Figure 10 Mark a in the figure. The second stepped surface 1c is angled in both the front-to-back and left-to-right directions to facilitate drainage of water accumulated in the decorative cover and roof cavity. A regular radar mounting surface 1e is located in the center of the roof outer panel 1. The angle and position of the radar mounting surface 1e are determined by the selected laser radar model and its placement. Furthermore, different types of laser radars require different mounting surface angles. The laser radar selected in this embodiment requires a horizontal mounting surface, meaning that the radar mounting surface 1e is a horizontal plane with an angle of 0. Its position is determined by the placement location. This embodiment of the invention provides a laser radar placement relative to the front windshield seam. Specifically, a drainage groove 1d is provided between the radar mounting surface 1e and the second stepped surface 1c. This groove also serves to provide clearance for the radar assembly 4. Its depth is determined by the structure of the laser radar 4 and the radar decorative cover 3. It is recommended that a clearance of 2 to 5 mm be left between the drainage groove 1d and the components above it. To reduce water accumulation in the groove, a clearance of 2 mm is reserved in this embodiment. Furthermore, the drainage groove 1d is lower in the front and higher in the back, and the recommended inclination angle of the front and back is 3° to 10°. The larger the angle, the more conducive it is to draining the water inside the drainage groove 1d.

[0076] refer to Figure 5 、 Figure 6 and Figure 9 In some preferred embodiments, the following settings are provided to enhance the sealing effect:

[0077] The radar decorative cover 3 includes an outer panel 301 and an inner panel 302;

[0078] The sealing structure includes a rubber sealing strip 303 and a foam sealing strip 304; the rubber sealing strip 303 is C-shaped; the rubber sealing strip is connected to the left and right sides of the inner panel 302, as well as the side of the inner panel 302 away from the front of the vehicle;

[0079] The foam sealing strip 304 includes a first portion 308, a second portion 306 and a third portion 305; the first portion 308 is conformally arranged with the rubber sealing strip 303 and is located in the area enclosed by the rubber sealing strip 303, the second portion 306 and the third portion 305 are connected to the side of the inner panel 302 close to the front of the vehicle; the third portion 305 is spaced apart on both sides of the second portion 306 in the width direction of the roof, and the third portion 305 is connected to the first portion 308; a drainage groove is formed between the second portion 306 and the third portion 305.

[0080] In this embodiment, the rubber sealing strip 303 is bonded to the rear edge of the inner panel 302, contacting the rounded corner of the roof outer panel 1. The foam sealing strip 304 is made of foam material. Based on the drainage speed requirements of the laser radar operating environment, the distance between the drainage notch, namely the second portion 306 and the third portion 305, is set to 5 to 20 mm.

[0081] The radar decorative cover 3 is flush with the roof outer panel 1, or the decorative cover is 0-0.5mm lower than the roof. The upper surfaces of the rubber sealing strip 303 and the foam sealing strip 304 are bonded to the inner panel 302, and the lower surfaces are attached to the first step surface 1b.

[0082] The rubber sealing strip 303 absorbs fluctuations in the Y-direction clearance between the radome 3 and the roof panel 1, preventing interference between the two panels. It also seals the gap between the radome 3 and the roof panel 1, reducing wind noise and preventing rain from falling onto the first step surface 1b. When the radome 3 is secured to the vehicle body, the foam sealing strip 304 is compressed in the Z-direction, ensuring a secure seal even when subjected to wind resistance.

[0083] refer to Figure 5 、 Figure 6 In some preferred embodiments, the connection form of the radar assembly 4 is described as follows:

[0084] The radar mounting surface 1e is provided with a radar mounting plate connection hole 101;

[0085] The radar assembly 4 includes a radar mounting plate 400 and a radar body 401. The radar mounting plate 400 is provided with a first fixing hole 403 corresponding to the radar mounting plate connection hole 101. The radar body 401 is connected to the radar mounting plate connection hole 101 and the first fixing hole 403 via bolts. The radar mounting plate 400 is also provided with a radar body connection hole. The radar body 401 is connected to the radar body connection hole and the radar mounting plate 400 via bolts. A thermal pad 402 is provided at the bottom of the radar mounting plate 400. The thermal pad 402 is located directly below the laser radar and can have a heat conducting function or can be made of foam material.

[0086] The bottom of the bolt connecting the radar body connection hole and the radar mounting plate 400 extends into the drainage groove 1d, and there is a gap between the bottom end of the bolt and the bottom wall of the drainage groove 1d. This makes the drainage groove 1d also have the effect of avoiding the structure of the radar assembly 4 itself.

[0087] A second fixing hole 102 is provided on the first stepped surface 1b; a third fixing hole 103 is provided on the second stepped surface 1c, located on one side of the windshield overlap surface 1a, near the second fixing hole 102. A first wiring harness passage hole 104 is provided on the second stepped surface 1c; the first wiring harness passage hole 104 can be located on a boss on the second stepped surface 1c. In this embodiment of the present invention, the height difference between the boss and the drain groove 1d in the Z direction of the vehicle body is D2, with a recommended height difference of 0 to 5 mm. The end of the radar body 401 wiring harness has a connector that snaps into the wiring harness socket of the radar body 401. The other end has a wiring harness rubber sleeve that snaps into the first wiring harness passage hole 104, allowing the wiring harness to pass through and sealing the sheet metal hole.

[0088] A connecting nut 307 corresponding to the second fixing hole 102 and a positioning post 309 corresponding to the third fixing hole 103 are fixed to the inner wall of the inner plate 302. The positioning post 309 is inserted into the third fixing hole 103. A protrusion is provided on the second stepped surface 1c, corresponding to the third fixing hole 103. The protrusion is higher than the upper surface of the foam sealing strip 304, thereby further preventing water accumulation and ingress at the third fixing hole 103.

[0089] When the above bolts are connected, sealing washers need to be provided. The structure allows that when connecting the radar decorative cover 3, the corresponding bolts are installed from the bottom of the top cover outer panel 1, and then connected with the connecting nut 307, so that the radar decorative cover 3 and the top cover outer panel 1 can be clamped and pulled, providing force to compress the sealing structure, improving the sealing performance, and ensuring that the radar decorative cover 3 has no exposed connection holes.

[0090] refer to Figure 4 、 Figure 8 、 Figure 9 、 Figure 11-Figure 15 In some preferred embodiments, in order to improve the structural strength of the roof and provide a stable mounting point for the radar assembly 4, the following configuration is provided:

[0091] The roof structure with the laser radar also includes a crossbeam inner plate 5. The crossbeam inner plate 5 has a first flange surface 5a on the side away from the front of the vehicle and a second flange surface 5b on the side close to the front of the vehicle. The first flange surface 5a is connected to a sunroof reinforcement ring 6.

[0092] The middle of the crossbeam inner plate 5 is connected to the crossbeam outer plate 7, and the crossbeam outer plate 7 is connected to the bottom of the pit; the top cover outer plate 1 covers the crossbeam inner plate 5, the skylight reinforcement ring 6 and the crossbeam outer plate 7.

[0093] like Figure 11 and Figure 12 As shown, the crossbeam outer plate 7 and the crossbeam inner plate 5 are in a fitted relationship. A first connecting plane 7a corresponding to the radar mounting surface 1e is provided in the middle of the crossbeam outer plate 7. A first through hole 701 corresponding to the first fixing hole 403 is provided on the first connecting plane 7a. Second connecting planes 7b corresponding to the first step surface 1b are provided on both sides of the crossbeam outer plate 7 in the width direction of the roof. A second through hole 702 and a third through hole 703 corresponding to the second fixing hole 102 and the third fixing hole 103 are provided on the second connecting plane 7b.

[0094] The crossbeam inner plate 5 is provided with a fourth through hole 501 and a fifth through hole 502 corresponding to the second fixing hole (102) and the second through hole 702; the crossbeam inner plate 5 is provided with a third connecting plane 5c connected to the bottom of the crossbeam outer plate 7; and both the crossbeam inner plate 5 and the crossbeam outer plate 7 are provided with a second wiring harness through hole.

[0095] The above multiple through holes facilitate installation through bolts from inside the vehicle. The diameter of the through holes is determined by the outer diameter of the nut fixing the laser radar and the assembly tightening tool; and it also illustrates the connection relationship between the crossbeam outer panel 7, the crossbeam inner panel 5 and the top cover outer panel 1.

[0096] In this embodiment, the inner plate 5 of the crossbeam is an upward-opening groove-shaped part made of a stamped part. The groove-shaped part has a second flange surface 5b at the front, a first flange surface 5a at the rear, and a middle groove-shaped bottom surface with several middle planes.

[0097] The first connecting plane 7a and the second connecting plane 7b are made by resistance welding of two layers of plates. The crossbeam outer plate 7, the crossbeam inner plate 5, the roof outer plate 1 and the skylight reinforcement ring 6 of the embodiment of the present invention are in a bonding and welding relationship.

[0098] The first connecting plane 7a, the third connecting plane 5c and the radar mounting surface 1e form a three-layer steel plate fitting connection relationship; the second connecting plane 7b and the first step surface 1b form a two-layer steel plate fitting connection relationship; the second flange surface 5b and the front windshield overlap surface 1a form a two-layer steel plate fitting connection relationship, and the first flange surface 5a, the sunroof reinforcement ring 6 and the first step surface 1b of the top cover outer panel 1 form a three-layer steel plate fitting connection relationship.

[0099] The sunroof reinforcement ring 6 and the inner plate of the crossbeam 5 are connected by structural adhesive and welding points; the welding points will be blocked by the front windshield 2 and the radar decorative cover 3, and the concave appearance of the welding points formed by welding is invisible and does not affect the appearance quality of the vehicle body.

[0100] The top cover outer panel 1 is only fitted with other sheet metal parts at the welding points and the fixed points of the radar assembly 4, thereby avoiding vibration and abnormal noise of the top cover outer panel and other sheet metal parts at non-fixed positions.

[0101] Furthermore, a sunroof mechanism avoidance hole 503 is provided on the side of the inner plate 5 of the crossbeam away from the front of the vehicle; a positioning portion 504 is provided on the first flange surface 5a and on both sides of the sunroof mechanism avoidance hole 503 in the width direction of the roof, and a fourth through hole 501 is also provided on the positioning portion 504; a positioning notch 601 corresponding to the positioning portion 504 is provided on the sunroof reinforcement ring 6.

[0102] Because the vertical distance between the sunroof mechanism and the inner crossbeam panel 5 is relatively small, this embodiment provides a sunroof mechanism avoidance hole 503 in the vertical surface of the inner crossbeam panel 5 to prevent interference during assembly. CAE analysis shows that the provision of a sunroof mechanism avoidance hole 503 of a certain size in the middle of the inner crossbeam panel 5 has no impact on the vehicle's side impact and top impact performance.

[0103] The above-mentioned fixed points are provided with annular sealing rings around them, and these fixed points are connected by bolts and nuts. The sealing rings are fully compressed by the bolt connection, which fundamentally prevents the occurrence of water leakage at the bolt connection; a sealing ring is arranged around the positioning column 309 of the radar decorative cover 3 of the present invention, and the third fixing hole 103 on the top cover outer plate is located on the boss. By setting the boss and increasing the sealing compression amount, water can be avoided from entering the positioning pin; the top cover structure of the present invention is provided with glue connection, two-layer plate welding, three-layer plate welding and bolt connection in sequence under the top cover outer plate 1, which ensures the mode of each installation point of the radar decorative cover 3 and the radar component 4, and provides a guarantee for the normal operation of the laser radar.

[0104] refer to Figure 1-Figure 2 、 Figure 14-17 A second aspect provides a vehicle body, comprising:

[0105] The above has a top cover structure of a laser radar;

[0106] The top of the front windshield 2 is connected to the front windshield overlap surface 1a, and the bottom of the front windshield 2 and both sides in the width direction of the vehicle body are connected to the vehicle body A-pillar and the vehicle body front cabin.

[0107] The front windshield 2 is sealed and connected to the front windshield overlapping surface 1a, the A-pillar of the vehicle body and the front cabin of the vehicle body through glass glue 200; a sealing strip 201 is provided on the upper side of the glass glue 200 and located between the front windshield 2 and the front windshield overlapping surface 1a; the front windshield 2 is also bonded to the front edge of the front windshield 2 through a glass gasket 202 and a glass positioning pin 2035.

[0108] The lip of the sealing strip 201 is located between the radar decorative cover 3 and the top of the front windshield 2 and contacts the radar decorative cover 3 to form a drainage channel arranged along the width direction of the roof. Figure 17The height of the horizontal plane where the second step surface 1c is connected to the front windshield lap surface 1a is greater than the height of the horizontal plane where the top upper edge of the front windshield 2 is located. Figure 10 and Figure 16 As shown, the middle upper edge of the front windshield 2 is P0, the middle lower edge is P3, and the horizontal line L0 passes through P0; the lowest point of the second step surface 1c is P1, and the horizontal line LH passes through P1; the lower surface of the sealing strip 201 is P2. Figure 1 、 Figure 2 and Figure 10 As shown, since the middle of the front edge of the radar decorative cover 3 protrudes toward the front windshield 2 to a certain extent, and the glass glue 200 prevents water from entering the car, water will accumulate in the area surrounded by the horizontal line L0, the front windshield overlap surface 1a, the front windshield and the sealing strip 201, and the depth of the accumulated water is H0. In order to reduce the impact of moisture formed by accumulated water on the laser radar, the present invention proposes that the volume of accumulated water is not more than 5ml. The sealing and drainage structure of the roof laser radar and the car body proposed in the present invention can be decomposed into two paths of the drainage structure. The water flow S1 comes from the rear of the radar decorative cover, the water flow from the roof, sunroof and other exterior parts at a higher position on the roof, and under the action of gravity, the water flow will flow from top to bottom and from back to front through the rubber sealing strip 303. If there is a small amount of water passing through the rubber sealing strip 303, it will be blocked by the foam sealing strip 304. Assuming that very little water flows through the foam sealing strip 304, it will enter the cavity formed by the radar decorative cover 3 and the top cover outer panel 1. The water flow in this area will follow Figure 16 and Figure 17 The path shown is to drain through the drainage groove 1d into the gap between the front windshield glass sheet and the decorative cover.

[0109] Figure 17 The middle water flow, S2, originates from the sides of the radar decorative cover and higher-level exterior features such as the roof and sunroof. Under the influence of gravity, the water flows from top to bottom and from back to front into the gap between the front windshield and the decorative cover, entering at point P4. This water flow can be diverted toward the center of the vehicle to converge with S1 near P0 before being discharged, or it can be split to the left and right sides of the glass and discharged through the side edges.

[0110] In this section, the top cover outer plate and the front windshield match. Specifically, the front windshield sealing strip 201 is attached to the front windshield overlap surface 1a, and its lip is located at the gap between the top cover outer plate 1 and the front windshield 2. This gap is Figure 17 The water flow S2 channel is shown.

[0111] The recommended assembly sequence of the present invention is as follows:

[0112] Step 1: The top cover outer panel 1, the crossbeam outer panel 7, the crossbeam inner panel 5 and other stamped parts are welded to form a body assembly. This step is completed in the welding workshop.

[0113] Step 2: Separately assemble the radar cover 3, radar assembly 4, and lidar wiring harness to form a cover assembly. This step and subsequent steps are completed in the final assembly workshop.

[0114] Step 3: Install the decorative cover assembly on the painted car body. During the installation process, install the decorative cover assembly from top to bottom and use bolts to fix the decorative cover on the car body from bottom to top.

[0115] Step 4: Apply glass glue 200 on the front windshield 2, set a sealing strip 201 and adhere it to the car body from top to bottom;

[0116] Step 5: Install other roof accessory systems such as skylights, dome lights, and ceilings.

[0117] In the description of this application, it should be noted that the terms "upper" and "lower" and the like indicate orientations or positional relationships based on the orientations or positional relationships 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, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application. Unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be internal communication between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0118] It should be noted that, in this application, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprising a ..." does not exclude the presence of other identical elements in the process, method, article or device comprising the element.

[0119] The foregoing is merely a list of specific embodiments of the present application, intended to enable those skilled in the art to understand or implement the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application is not limited to the embodiments shown herein, but is intended to conform to the broadest scope consistent with the principles and novel features of the present application.

Claims

1. A top cover structure with a laser radar, characterized in that: It includes: A top cover outer panel (1) comprising a front windshield overlap surface (1a) and an exposed surface, wherein a recess is provided in the middle of the exposed surface; the recess comprises a first step surface (1b) and a second step surface (1c) arranged above and below; a portion of the second step surface (1c) is a radar mounting surface (1e), and the remaining portion is recessed to form a drainage groove (1d); A radar assembly (4) connected to the radar mounting surface (1e); A radar decorative cover (3) covering and connected to a portion of the first step surface (1b) and the windshield overlap surface (1a), and having a drainage groove opening corresponding to the drainage groove (1d) provided on a side of the sealing structure of the inner wall close to the front of the vehicle; The radar installation surface (1e) is provided in the middle of the second step surface (1c), and the drainage grooves (1d) are provided on both sides of the radar installation surface (1e) in the width direction of the vehicle roof; the height of the radar installation surface (1e) in the middle area of ​​the second step surface (1c) is higher than that of the remaining areas; The radar assembly (4) comprises a radar mounting plate (400) and a radar body (401); the radar mounting plate (400) is further provided with a radar body connecting hole; the radar body (401) is connected to the radar body connecting hole and the radar mounting plate (400) by a bolt; the bottom of the bolt connecting the radar body connecting hole and the radar mounting plate (400) extends into the drainage groove (1d), and a gap is provided between the bottom end of the bolt and the bottom wall of the drainage groove (1d).

2. The top cover structure with a laser radar according to claim 1, wherein: In the direction toward the front of the vehicle, the side of the first step surface (1b) and the second step surface (1c) close to the front of the vehicle are coplanar and parallel to the windshield overlap surface (1a); the height of the side of the first step surface (1b) and the second step surface (1c) close to the front of the vehicle is lower than the height of the side of the first step surface (1b) and the second step surface (1c) away from the front of the vehicle; In the width direction of the roof, the height of the remaining areas gradually decreases from both sides of the second step surface (1c) to the drainage groove (1d).

3. The top cover structure with laser radar according to claim 1, characterized in that: The radar decorative cover (3) comprises an outer plate (301) and an inner plate (302); The sealing structure comprises a rubber sealing strip (303) and a foam sealing strip (304); the rubber sealing strip (303) is C-shaped; the rubber sealing strip is connected to the left and right sides of the inner panel (302), as well as the side of the inner panel (302) away from the front of the vehicle; The foam sealing strip (304) includes a first portion (308), a second portion (306) and a third portion (305); the first portion (308) is arranged conformally with the rubber sealing strip (303) and is located in the area surrounded by the rubber sealing strip (303); the second portion (306) and the third portion (305) are connected to the side of the inner panel (302) close to the front of the vehicle; the second portion (306) is provided with the third portion (305) at intervals on both sides in the width direction of the roof, and the third portion (305) is connected to the first portion (308); the drainage notch is formed between the second portion (306) and the third portion (305).

4. The top cover structure with laser radar according to claim 3, characterized in that: The radar mounting surface (1e) is provided with a radar mounting plate connection hole (101); The radar mounting plate (400) is provided with a first fixing hole (403) corresponding to the radar mounting plate connecting hole (101); the radar body (401) is connected to the radar mounting plate connecting hole (101) and the first fixing hole (403) via bolts; and a thermal pad (402) is provided at the bottom of the radar mounting plate (400).

5. The top cover structure with laser radar according to claim 4, characterized in that: A second fixing hole (102) is provided on the first step surface (1b); the second step surface (1c) is located on one side of the windshield overlap surface (1a), and a third fixing hole (103) is provided at a position close to the second fixing hole (102); a first wiring harness through hole (104) is provided on the second step surface (1c); A connecting nut (307) corresponding to the second fixing hole (102) and a positioning column (309) corresponding to the third fixing hole (103) are fixedly provided on the inner wall of the inner plate (302).

6. The top cover structure with laser radar according to claim 5, characterized in that: The roof structure with the laser radar further comprises a crossbeam inner plate (5), wherein the crossbeam inner plate (5) is provided with a first flange surface (5a) on a side away from the front of the vehicle, and a second flange surface (5b) on a side close to the front of the vehicle; the first flange surface (5a) is connected to a sunroof reinforcement ring (6); The middle portion of the crossbeam inner plate (5) is connected to a crossbeam outer plate (7), and the crossbeam outer plate (7) is connected to the bottom of the pit; The top cover outer plate (1) covers the crossbeam inner plate (5), the skylight reinforcement ring (6) and the crossbeam outer plate (7).

7. The top cover structure with laser radar according to claim 6, characterized in that: A first connecting plane (7a) corresponding to the radar installation surface (1e) is provided in the middle of the crossbeam outer plate (7), and a first through hole (701) corresponding to the first fixing hole (403) is provided on the first connecting plane (7a); a second connecting plane (7b) corresponding to the first step surface (1b) is provided on both sides of the crossbeam outer plate (7) in the width direction of the roof, and a second through hole (702) and a third through hole (703) corresponding to the second fixing hole (102) and the third fixing hole (103) are provided on the second connecting plane (7b); The crossbeam inner plate (5) is provided with a fourth through hole (501) and a fifth through hole (502) corresponding to the second fixing hole (102) and the second through hole (702); the crossbeam inner plate (5) is provided with a third connection plane (5c) connected to the bottom of the crossbeam outer plate (7); and both the crossbeam inner plate (5) and the crossbeam outer plate (7) are provided with a second wiring harness through hole.

8. The top cover structure with laser radar according to claim 7, characterized in that: A sunroof mechanism avoidance hole (503) is provided on the side of the crossbeam inner plate (5) away from the vehicle front; positioning portions (504) are provided on the first flange surface (5a) and on both sides of the sunroof mechanism avoidance hole (503) in the width direction of the vehicle roof, and the positioning portions (504) are also provided with the fourth through hole (501); The skylight reinforcement ring (6) is provided with a positioning notch (601) correspondingly connected to the positioning portion (504).

9. A vehicle body, characterized in that: It includes: The top cover structure with a laser radar according to any one of claims 1 to 8; The top of the front windshield (2) is connected to the front windshield overlap surface (1a), and the bottom of the front windshield (2) and both sides in the width direction of the vehicle body are connected to the vehicle body A-pillar and the vehicle body front cabin.

10. The vehicle body according to claim 9, wherein: The front windshield (2) and the front windshield overlap surface (1a), the vehicle body A-pillar and the vehicle body front cabin are sealed and connected by glass glue (200); a sealing strip (201) is provided on the upper side of the glass glue (200) and located between the front windshield (2) and the front windshield overlap surface (1a); The lip of the sealing strip (201) is located between the radar decorative cover (3) and the top of the front windshield (2), and is in contact with the radar decorative cover (3) to form a drainage channel arranged along the width direction of the roof; The height of the horizontal plane where the second step surface (1c) is connected to the windshield overlap surface (1a) is greater than the height of the horizontal plane where the second step surface (1c) is connected to the windshield overlap surface (1a).

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