Engine hood, vehicle body and transport vehicle

Abstract

This application relates to an engine hood, a vehicle body, and a transport vehicle. The engine hood includes an outer panel and an inner panel. The outer panel includes a body and an edge portion. The edge portion includes multiple sequentially connected extension segments arranged circumferentially along the body. The edge portion is connected to the periphery of the body and is bent relative to the body to define a snap-fit ​​groove. The inner panel is stacked on one side of the body, and at least a portion of the periphery of the inner panel is embedded in the snap-fit ​​groove. Each extension segment has two connecting ends in its extending direction. The connecting ends of two adjacent extension segments are connected to each other. At least one of the two connected ends is provided with a first fixing part, which is fixedly connected to the inner panel. This embodiment can limit the deformation of the inner or outer panel to a large extent, thereby improving the production efficiency of the engine hood.

Description

Technical Field

[0001] This application relates to the field of vehicle sheet metal structure technology, and in particular to an engine hood, a vehicle body, and a transport vehicle. Background Technology

[0002] With the increase in the number of vehicles, public transportation is under greater pressure, and collisions between vehicles and pedestrians occur frequently. In most accidents, pedestrians are easily injured by the vehicle's hood. To protect the lives and safety of pedestrians, existing vehicles generally choose to reduce the stiffness of various parts of the hood, thereby reducing the overall stiffness of the hood and mitigating the severity of the impact on pedestrians.

[0003] However, the reduced rigidity of the hood assembly makes the hood prone to deformation during production. Utility Model Content

[0004] This application provides an engine hood, a carrier body, and a transport vehicle, aiming to solve the problem that engine hoods are prone to deformation during production.

[0005] In a first aspect, embodiments of this application provide an engine hood, comprising an outer panel and an inner panel. The outer panel includes a body and an edge portion, the edge portion including a plurality of sequentially connected extension segments arranged circumferentially along the body. The edge portion is connected to the periphery of the body and bent relative to the body to define a snap-fit ​​groove with the body. The inner panel is stacked on one side of the body, and at least a portion of the periphery of the inner panel is embedded in the snap-fit ​​groove. Each extension segment has two connecting ends in its extending direction, the connecting ends of two adjacent extension segments are connected to each other, and at least one of the two connected ends is provided with a first fixing part, the first fixing part being fixedly connected to the inner panel. The technical solution of this embodiment can limit the deformation of the inner or outer panel during heat treatment, reduce the defect rate of the engine hood, and improve the production efficiency of the engine hood.

[0006] In some optional embodiments, at least one extension section is provided with a second fixing part, which is located between the two connecting ends and is fixedly connected to the inner plate. The technical solution of this embodiment can further improve the structural stability of the engine hood.

[0007] In some optional embodiments, there is one second fixing part, and the distance between the second fixing part and each of the two connecting ends is the same; or there are multiple second fixing parts, which are equally spaced on the extension section, and the distance between the connecting end and the adjacent second fixing part is the same as the distance between two adjacent second fixing parts. The technical solution of this embodiment enables the extension section to have relatively uniform structural strength in its extension direction.

[0008] In some optional embodiments, the body has two connecting sides, located on opposite sides of the body. Each connecting side is adapted to be spaced apart from the fender of the vehicle shell, and each connecting side is connected to at least two extension sections. This embodiment ensures a good fit between the connecting sides and the fenders, avoiding significant differences in distance and height between the connecting sides and the fenders in the extension direction, thereby improving the product qualification rate of the engine hood.

[0009] In some optional embodiments, the inner panel has a fitted portion, a hollow portion, and a main body portion connected in sequence. The hollow portion surrounds the outer periphery of the main body portion, and the fitted portion surrounds the outer periphery of the hollow portion, with the fitted portion being fitted into a snap-fit ​​groove. The hollow portion has multiple through holes, which are arranged sequentially and at intervals around the outer periphery of the main body portion. The technical solution of this embodiment can effectively reduce the stiffness of the inner panel, resulting in a lower overall stiffness of the engine hood, thereby reducing the severity of the impact on pedestrians and ensuring that the engine hood meets pedestrian protection collision requirements.

[0010] In some optional embodiments, the ratio of the sum of the dimensions of the plurality of through holes in the circumferential direction of the hollowed-out portion to the dimension of the hollowed-out portion in the circumferential direction is greater than or equal to 50% and less than or equal to 85%. The technical solution of this embodiment can effectively reduce the rigidity of the inner plate.

[0011] In some optional embodiments, the main body is provided with multiple weight-reducing holes, and at least one weight-reducing hole contains a connecting rib, with its two ends connected to two positions on the edge structure of the weight-reducing hole. This embodiment's technical solution enables the main body and inner plate to have a certain rigidity to meet the torsional and lateral rigidity requirements of the inner plate itself.

[0012] In some optional embodiments, the first fixing part is located on the side of the edging portion opposite to the inner plate, and the first fixing part is welded to the inner plate. The technical solution of this embodiment can simplify the calculation program of the welding robot, or reduce the workload of welding workers and improve welding efficiency.

[0013] In some optional embodiments, the first fixing part is welded to the inner plate to form a weld point, and the ratio of the embedding depth of the weld point on the inner plate to the thickness of the inner plate is greater than or equal to 25% and less than or equal to 60%.

[0014] In some optional embodiments, the first fixing part is welded to the inner plate to form a weld point. The extension direction of the weld point relative to the edge part intersects with the direction perpendicular to the surface of the edge part to form an included angle β. The included angle β is greater than or equal to 10° and less than or equal to 50°.

[0015] Secondly, this application provides a vehicle body, which includes a vehicle shell and an engine hood as mentioned above. The vehicle shell has an accommodating space for accommodating a power unit; the engine hood is connected to the vehicle shell and covers the accommodating space.

[0016] Thirdly, this application provides a transport vehicle, which includes a power unit and the vehicle body mentioned above, the vehicle body having a accommodating space to accommodate the power unit.

[0017] This application provides an engine hood, which includes an outer panel and an inner panel. The outer panel includes a body and an edge portion. The edge portion is connected to the periphery of the body and is bent relative to the body, defining a snap-fit ​​groove. The inner panel is stacked on one side of the body, and at least a portion of the periphery of the inner panel is embedded in the snap-fit ​​groove to connect the inner panel and the outer panel. In this embodiment, the edge portion includes a plurality of sequentially connected extension segments. The plurality of extension segments are arranged circumferentially along the body, and each extension segment has two connecting ends in its extension direction. The connecting ends of two adjacent extension segments are connected to each other. Among the two connecting ends, at least one connecting end is provided with a first fixing part for connecting with the inner panel.

[0018] In this embodiment, the edging portion includes multiple extension segments, and at least one first fixing part is provided at the connection between each pair of adjacent extension segments. Therefore, the edging portion has multiple first fixing parts, which are arranged sequentially and at intervals along the circumference of the edging portion. Multiple positions on the periphery of the inner panel are fixedly connected to the multiple first fixing parts, so that the connection between the inner panel and the outer panel is relatively stable, the periphery structure of the engine hood is relatively stable, and the engine hood becomes a structure with strong integrity. The structure of the engine hood in this embodiment is relatively stable. The multiple first fixing parts provided on the outer panel restrict the multiple structures of the inner panel and the multiple structures of the outer panel, which can limit the deformation of the inner panel or the outer panel during heat treatment, reduce the defect rate of the engine hood, and improve the production efficiency of the engine hood. Attached Figure Description

[0019] To more clearly illustrate the technical solution of this application, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0020] Figure 1 This is a structural schematic diagram of the transport vehicle and the vehicle body provided in the embodiments of this application.

[0021] Figure 2 This is a schematic diagram of the engine hood structure provided in an embodiment of this application.

[0022] Figure 3 yes Figure 2 The diagram shows the structure of the outer panel of the engine hood.

[0023] Figure 4 yes Figure 3 The diagram shows a structural schematic of the outer panel body and the edge portion defining the snap-fit ​​groove.

[0024] Figure 5 yes Figure 2 The diagram shows the structure of the inner panel of the engine hood being embedded in the snap-fit ​​groove.

[0025] Figure 6 yes Figure 2 The diagram shows the structural schematic of the edging portion of the outer panel of the engine hood.

[0026] Figure 7 yes Figure 2 The diagram shows the structural schematic of the welding between the inner and outer panels of the engine hood.

[0027] Figure 8 yes Figure 2 The diagram shows the structural arrangement of the engine hood and the fender of the vehicle shell.

[0028] Figure 9 yes Figure 3 The diagram shows the connecting side structure of the outer panel of the engine hood.

[0029] Figure 10 yes Figure 9 The diagram shows the structural schematic corresponding to the connecting side and the extension section.

[0030] Figure 11 yes Figure 2 The diagram shows the structure of the inner panel of the engine hood.

[0031] Reference numerals: 1000, transport vehicle; 900, vehicle body; 910, vehicle shell; 911, front shell; 9111, fender; 9112, accommodating space; 912, rear shell; 9121, cockpit; 9122, windshield; 800, power unit; 100, engine hood; 10, outer panel; 11, body; 12, edging part; 121, extension section; 1211, first fixing part; 1212, second fixing part; 1213, connecting end; 122, connection point; 13, connecting side; 14, mating side; 15, snap-fit ​​groove; 151, filling groove; 20, inner panel; 21, fitting part; 22, hollow part; 221, through hole; 23, main body; 231, weight reduction hole; 232, connecting rib. Detailed Implementation

[0032] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are merely some embodiments of the present application, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present application without creative effort are within the scope of protection of the present application.

[0033] Please see Figure 1 This application provides an engine hood 100, a vehicle body 900 on which the engine hood 100 is disposed, and a transport vehicle 1000 having the vehicle body 900. In this embodiment, the transport vehicle 1000 is used for carrying people or goods, and the type of transport vehicle 1000 includes trucks, cars, SUVs, sightseeing vehicles, etc. In this embodiment, the transport vehicle 1000 includes a vehicle body 900 and a power unit 800. The vehicle body 900 has a accommodating space 9112, which is a highly enclosed space. The power unit 800 is installed in the accommodating space 9112 to isolate it from the outside. In this embodiment, the vehicle body 900 may also include multiple wheel sets, which are installed on the bottom side of the vehicle body 900. At least one of the multiple wheel sets is connected to the power unit 800 for transmission, so that the transport vehicle 1000 can move. In this embodiment, the transport vehicle 1000 is a sedan or SUV. The transport vehicle 1000 also includes a cabin 9121. The accommodating space 9112 is located on the front side of the cabin 9121 in the forward direction A of the transport vehicle 1000. In other embodiments, the position of the accommodating space 9112 relative to the cabin 9121 can be specifically set according to the type of vehicle.

[0034] In this embodiment, the vehicle body 900 includes a vehicle shell 910, which is a sheet metal structure. The vehicle shell 910 constitutes the main structure of the transport vehicle 1000 and defines an accommodating space 9112 for mounting the power unit 800. In this embodiment, the vehicle shell 910 also defines a cabin 9121 for the driver and passengers. The vehicle body 900 also includes a door, which is movably mounted on the vehicle shell 910 to close or open the cabin 9121. In this embodiment, the accommodating space 9112 is generally an upward-opening groove-shaped space. The vehicle body 900 also includes an engine hood 100, which is a cover-like or hood-like structure. The engine hood 100 is connected to the vehicle shell 910 to cover the accommodating space 9112, thereby achieving a high degree of airtightness in the accommodating space 9112 and preventing the power unit 800 from being exposed and damaged. In this embodiment, the engine hood 100 is movably mounted to the vehicle housing 910, allowing the engine hood 100 to move relative to the vehicle housing 910 and expose the accommodating space 9112 for easy access to the power unit 800 and other functional devices within the accommodating space 9112, such as a water tank and air conditioner. In this embodiment, the power unit 800 of the transport vehicle 1000 is installed within the accommodating space 9112; therefore, the structure covering the accommodating space 9112 is referred to as the engine hood 100, or engine cover, etc. In other embodiments, the power unit 800 of the transport vehicle 1000 is not installed in the accommodating space 9112, for example, it is installed under the seat, and the accommodating space 9112 is used as a front trunk or to accommodate other functional devices; in this case, the structure covering the accommodating space 9112 can be referred to as a front trunk cover or cabin cover, etc.

[0035] Please see Figure 2 , Figure 3 and Figure 4 In this embodiment, the engine hood 100 includes an outer panel 10 and an inner panel 20, which are connected together. When the engine hood 100 is mounted on the vehicle housing 910, the inner panel 20 is generally located on the side of the outer panel 10 facing the accommodating space 9112. In this embodiment, the outer panel 10 includes a body 11 and an edge portion 12. The body 11 has a plate-like structure, and the edge portion 12 is connected to the periphery of the body 11. The edge portion 12 is bent relative to the body 11 to be located on the side of the body 11 facing the accommodating space 9112, so that the edge portion 12 is spaced apart from the body 11 and defines the snap-fit ​​groove 15.

[0036] It should be noted that, in this embodiment, Figure 4 The outer panel 10 shown is not its initial state. The initial state of the outer panel 10 is a plate-like structure similar to the body 11, with the edging portion 12 encircling the outer periphery of the body 11. After the inner panel 20 and the outer panel 10 are initially positioned, the outer panel 10 is bent to form... Figure 4 In practice, the outer panel 10, after being bent, partially covers the inner panel 20, as shown in the following example. Figure 5 As shown. Figure 4 The outer panel is drawn separately to better illustrate its shape after bending. Figure 4 The image shows the shape of the outer panel 10 under specific conditions. Please refer to the diagram. Figure 4 and Figure 5 Let's learn about the structure of outer panel 10 and inner panel 20.

[0037] Please see Figure 2 , Figure 3 and Figure 5 In this embodiment, the inner panel 20 is stacked on one side of the body 11. The edge structure of the inner panel 20 is located between the edging portion 12 and the body 11. The periphery of the inner panel 20 is embedded in the snap-fit ​​groove 15, so that the inner panel 20 is connected to the outer panel 10. In this embodiment, the periphery of the body 11 of the outer panel 10 and the periphery of the inner panel 20 are spaced apart to define a portion of the space of the snap-fit ​​groove 15 as a filling groove 151. The filling groove 151 is located between the periphery of the body 11 of the outer panel 10 and the periphery of the inner panel 20. The filling groove 151 is used to fill adhesive, such as expanding adhesive, shock-absorbing adhesive, etc.

[0038] Please see Figure 5In this embodiment, after the outer panel 10 forms the edging portion 12, the inner panel 20 and the outer panel 10 are not directly connected; they are connected by interlocking. In this embodiment, the inner panel 20 and the edging portion 12 are spaced apart to define a first gap, and the inner panel 20 and the body 11 are spaced apart to define a second gap. Both the first and second gaps are connected to the filling groove 151. As mentioned above, the filling groove 151 contains adhesive. In actual application scenarios, adhesive is present in both the first and second gaps. After high-temperature baking in the subsequent automotive painting process, the adhesive will cure and bond the inner panel 20 and the outer panel 10, improving the connection stability between the inner panel 20 and the outer panel 10. In actual assembly scenarios, the semi-fluid adhesive is first applied to the side of the outer panel 10 facing the inner panel 20. With the inner panel 20 installed on the outer panel 10, the adhesive is located between the inner panel 20 and the outer panel 10. The inner panel 20 compresses the adhesive, causing some of it to flow away from the periphery of the outer panel 10 to fill the gap between the inner panel 20 and the outer panel 10 (i.e., the second gap), and causing some of it to flow closer to the periphery of the outer panel 10 to be located on the outer periphery of the inner panel 20. Subsequently, the outer panel 10 is... The adhesive is bent to form the edging portion 12 and the filling groove 151. During this process, the adhesive is further squeezed to fill the filling groove 151. Some adhesive overflows the filling groove 151 and fills part of the first gap. The left side of the first gap near the filling groove 151 is filled with adhesive, but the right side of the first gap is not filled with adhesive. By adjusting the application position and amount of adhesive on the outer plate 10, it is ensured that there is no adhesive within a certain distance of the first fixing portion 1211, so that the first fixing portion 1211 can obtain better solder joint quality.

[0039] Please see Figure 6 In this embodiment, the edging portion 12 is a complete annular structure connected to the entire periphery of the body 11, so that the snap-fit ​​groove 15 also extends approximately along the circumference of the body 11, and the periphery of the inner plate 20 is substantially embedded in the snap-fit ​​groove 15. In other embodiments, the edging portion 12 may be an annular structure with one or more notches. In such embodiments, the snap-fit ​​groove 15 is not continuous in the circumference of the body 11, and a portion of the periphery of the inner plate 20 is embedded in the snap-fit ​​groove 15.

[0040] Please see Figure 3 and Figure 6In this embodiment, the edging portion 12 includes multiple extension segments 121, which are arranged circumferentially along the body 11. Adjacent extension segments 121 are connected to each other to form a complete ring structure. The extension directions of adjacent extension segments 121 are different, and the edging portion 12 is approximately a polygonal ring structure. The outline of the outer periphery of the edging portion 12 is approximately the same as the periphery outline of the body 11. In this embodiment, each extension segment 121 has two connecting ends 1213 in its extension direction, and the connecting ends 1213 of adjacent extension segments 121 are connected to each other. In this embodiment, the connecting ends 1213 refer to the solid structures at both ends of the extension segment 121 in its extension direction. In this embodiment, at least one of the two connecting ends 1213 is provided with a first fixing part 1211, which is fixedly connected to the inner plate 20 to enhance the connection stability between the inner plate 20 and the outer plate 10, so that the outer plate 10 and the inner plate 20 form an integral structure. In this embodiment, the two connecting ends 1213 connected to each other can be used as the connection point 122 of two adjacent extension segments 121. Therefore, in this embodiment, the connection point 122 of two adjacent extension segments 121 has at least one first fixing part 1211.

[0041] As one example, two adjacent extension segments 121 include a first extension segment (not shown in the figure) and a second extension segment (not shown in the figure). The connecting end 1213 of the first extension segment for connecting with the second extension segment is provided with a first fixing part 1211, while the connecting end 1213 of the second extension segment for connecting with the first extension segment is not provided with a first fixing part 1211. The connection point 122 between the first and second extension segments has a first fixing part 1211. As another example, the connecting end 1213 of the first extension segment for connecting with the second extension segment is not provided with a first fixing part 1211, while the connecting end 1213 of the second extension segment for connecting with the first extension segment is provided with a first fixing part 1211. The connection point 122 between the first and second extension segments has a first fixing part 1211. As another example, the first extension segment has a first fixing part 1211 at the connection end 1213 for connecting with the second extension segment, and the second extension segment has a first fixing part 1211 at the connection end 1213 for connecting with the first extension segment. The connection point 122 between the first extension segment and the second extension segment has two first fixing parts 1211.

[0042] In summary, this embodiment provides an engine hood 100, which includes an outer panel 10 and an inner panel 20. The outer panel 10 includes a body 11 and an edge portion 12. The edge portion 12 is connected to the periphery of the body 11 and is bent relative to the body 11 to define a snap-fit ​​groove 15. The inner panel 20 is stacked on one side of the body 11, and at least a portion of the periphery of the inner panel 20 is embedded in the snap-fit ​​groove 15 to connect the inner panel 20 and the outer panel 10. In this embodiment, the edge portion 12 includes a plurality of sequentially connected extension segments 121. The plurality of extension segments 121 are arranged circumferentially along the body 11. Each extension segment 121 has two connecting ends 1213 in its extension direction. The connecting ends 1213 of two adjacent extension segments 121 are connected to each other. Among the two connecting ends 1213 connected to each other, at least one connecting end 1213 is provided with a first fixing part 1211 for connecting with the inner panel 20.

[0043] In this embodiment, the edging portion 12 includes multiple extension segments 121. At least one first fixing part 1211 is provided at the connection 122 of each pair of adjacent extension segments 121. Therefore, the edging portion 12 has multiple first fixing parts 1211. The multiple first fixing parts 1211 are arranged sequentially and spaced apart along the circumference of the edging portion 12. Multiple positions on the periphery of the inner plate 20 are fixedly connected to the multiple first fixing parts 1211, so that the connection relationship between the inner plate 20 and the outer plate 10 is relatively stable, the periphery structure of the engine hood 100 is relatively stable, and the engine hood 100 becomes a structure with strong integrity. In the actual production process of the engine hood 100, the engine hood 100 will undergo heat treatment processes, such as the high-temperature baking process during automobile painting. The structure of the engine hood 100 in this embodiment is relatively stable. The multiple first fixing parts 1211 provided on the outer panel 10 restrict the multiple structures of the inner panel 20 and the multiple structures of the outer panel 10 to each other, which can limit the deformation of the inner panel 20 or the outer panel 10 during the heat treatment process, reduce the defect rate of the engine hood 100, and improve the production efficiency of the engine hood 100.

[0044] Please see Figure 5In this embodiment, the first fixing part 1211 is fixedly connected to the inner plate 20 by welding. This welding connection makes the connection between the inner plate 20 and the outer plate 10 more stable, resulting in a stronger overall integrity of the engine hood 100. In this embodiment, the welding-based fixing connection method is applicable to all similar engine hood 100 structures of the vehicle body 900, such as doors and tailgates. In this embodiment, the first fixing part 1211 is part of the structure of the edging part 12 itself. The first fixing part 1211 is located on the side of the edging part 12 opposite to the inner plate 20, and then the welding process is used to achieve the welding connection between the first fixing part 1211 and the inner plate 20. In this embodiment, the position of the first fixing part 1211 on the edging part 12 is relatively prominent, making it suitable for lap welding. The welding process has lower precision requirements, is easy to weld, simplifies the calculation program of the welding robot, reduces the workload of the welding worker, and improves welding efficiency. In this embodiment, the adhesive is cured and bonded to the outer panel 10 and the inner panel 20 during the high-temperature baking process. The high-temperature baking process is performed after welding the first fixing part 1211 and the inner panel 20. In this embodiment, the adhesive in the second gap is spaced apart from the first fixing part 1211 to avoid the adhesive from vaporizing and exploding under high temperature conditions during welding, which would lead to problems with the quality of the weld and deformation of the outer panel surface.

[0045] Please see Figure 5 In this embodiment, the first fixing part 1211 is welded to the inner plate 20 to form a weld point. The weld point is a structure formed by the solidification of a portion of the structure of the first fixing part 1211 and the inner plate 20 after melting under high temperature. In this embodiment, the weld point is drilled into or embedded in the inner plate 20. The ratio of the embedding depth of the weld point on the inner plate 20 to the depth of the inner plate 20 is greater than or equal to 25% and less than or equal to 60%, for example, 25%, 28%, 30%, 32%, 35%, 38%, 40%, 50%, 60%, etc.

[0046] In other embodiments, the first fixing part 1211 may be disposed on the side of the edge portion 12 facing the inner plate 20, and is suitable for welding by corner welding. In some other embodiments, the first fixing part 1211 may also be fixedly connected to the inner plate 20 by fasteners (screws, rivets, etc.).

[0047] Please see Figure 7In some embodiments, both the inner plate 20 and the outer plate 10 are aluminum alloy structures. The welding point intersects the direction of extension of the edging portion 12 with the direction perpendicular to the surface of the edging portion 12, forming an included angle β. In this embodiment, the welding process is lap laser welding. In this type of embodiment, the laser is obliquely injected into the surface of the edging portion 12 during welding, and the included angle β is in the range of 10° or greater and 50° or less, such as 10°, 20°, 25°, 30°, 40°, 50°, etc. In this type of embodiment, the oblique setting of the welding point can increase the actual thickness of the welded plate, avoid the inner plate 20 being welded through due to the small thickness of the aluminum alloy plate when welding perpendicularly (e.g., β±5°), avoid the vaporization and explosion of the adhesive between the inner plate 20 and the body 11, and avoid problems with weld quality and deformation of the outer plate 10's appearance.

[0048] In some embodiments, both the inner plate 20 and the outer plate 10 are galvanized steel sheet structures, and the welding point can be such that the extension direction of the weld point relative to the edge portion 12 intersects with the direction perpendicular to the edge portion 12, forming an included angle β. In this embodiment, the welding process is lap laser welding. In this type of embodiment, the laser is obliquely injected into the surface of the edge portion 12 during welding, and the range of the oblique angle β is greater than or equal to 10° and less than or equal to 50°, for example, 10°, 20°, 25°, 30°, 40°, 50°, etc. In this type of embodiment, the laser is obliquely injected, and the weld point extends in a direction away from the filling groove 151, which is conducive to the zinc vapor being discharged from the first gap to the outside. Specifically, the zinc vapor will not disperse towards the closed filling groove 151, but will disperse towards the port of the first gap away from the filling groove 151, and the distance between the weld point and the port of the first gap is small, shortening the path for the zinc vapor to exit the first gap.

[0049] Please see Figure 6In this embodiment, at least one extension segment 121 is provided with a second fixing part 1212. The second fixing part 1212 is located between the two connecting ends 1213 of the extension segment 121. The second fixing part 1212 is fixedly connected to the inner plate 20 to further improve the structural stability of the engine hood 100. In this embodiment, the second fixing part 1212 is connected to the inner plate 20 by welding. The welding connection makes the connection between the inner plate 20 and the outer plate 10 more stable, and makes the overall integrity of the engine hood 100 stronger. In this embodiment, the second fixing part 1212 is part of the structure of the edge banding 12 itself. The second fixing part 1212 is located on the side of the edge banding 12 away from the inner plate 20, and then the welding connection between the second fixing part 1212 and the inner plate 20 is achieved by welding. In this embodiment, the second fixing part 1212 is positioned prominently on the edge-wrapping part 12, making it suitable for lap welding. This method requires lower precision in the welding process, simplifies the welding robot's calculations, reduces the workload for welders, and improves welding efficiency. In this embodiment, the adhesive in the second gap is spaced apart from the second fixing part 1212 to prevent the adhesive from vaporizing and exploding under high temperatures during welding, which could lead to weld quality issues and deformation of the outer panel's surface.

[0050] In this embodiment, the welding of the second fixing part 1212 to the inner plate 20 also forms a similar shape. Figure 5 In this embodiment, the weld points are structures formed by the melting and solidification of the second fixing part 1212 and a portion of the inner plate 20 under high temperature. In this embodiment, the weld points are drilled into or embedded in the inner plate 20, and the ratio of the embedding depth of the weld point on the inner plate 20 to the thickness of the inner plate 20 is greater than or equal to 25% and less than or equal to 60%, for example, 25%, 28%, 30%, 32%, 35%, 38%, 40%, 50%, 60%, etc.

[0051] In other embodiments, the second fixing part 1212 may be disposed on the side of the edge portion 12 facing the inner plate 20, and is suitable for welding by corner welding. In some other embodiments, the second fixing part 1212 may be fixedly connected to the inner plate 20 by fasteners (screws, rivets, etc.).

[0052] In this embodiment, the plurality of extension segments 121 includes a third extension segment (not shown in the figure), on which a second fixing part 1212 is provided. On the third extension segment, the distance between the second fixing part 1212 and the two connecting ends 1213 is the same, so that the structural strength of the third extension segment is relatively uniform in its extension direction. In some embodiments, the plurality of extension segments 121 further includes a fourth extension segment (not shown in the figure), on which a plurality of second fixing parts 1212 are provided. The number of second fixing parts 1212 can be two, three, five, etc. On the fourth extension segment, the plurality of second fixing parts 1212 are equally spaced between the two connecting ends 1213. The distance between the connecting end 1213 and an adjacent second fixing part 1212 is equal to the distance between two adjacent second fixing parts 1212, so that the structural strength of the fourth extension segment is relatively uniform in its extension direction. In this embodiment, the spacing between two adjacent second fixing parts 1212 is greater than or equal to 100 mm and less than or equal to 800 mm, such as 100 mm, 200 mm, 300 mm, 500 mm, 700 mm, 800 mm, etc. In this embodiment, whether a second fixing part 1212 is provided on each extension segment 121, or the number of second fixing parts 1212, is specifically set according to the actual situation, such as the length of each extension segment 121, the position of the extension segment 121 on the engine hood 100, etc.

[0053] In this embodiment, the edging portion 12 is provided with a plurality of first fixing portions 1211 and a plurality of second fixing portions 1212. After being welded to the inner plate 20, the first fixing portions 1211 and the second fixing portions 1212 form a plurality of welds. In this embodiment, the number of welds ranges from 5 to 20, for example, 5, 8, 10, 15, 18, 20, etc.; the length of each weld ranges from 5 mm to 20 mm, for example, 5 mm, 7 mm, 10 mm, 13 mm, 16 mm, 20 mm, etc. In this embodiment, the number of welds is inversely proportional to the length of the welds; the more welds there are, the longer the welds. For example, if there are 5 welds, the weld length is set to 18 mm or 20 mm; if there are 15 welds, the weld length is set to 6 mm or 8 mm. In other embodiments, the number of welds and the weld length may be directly proportional or have other quantitative relationships, which will not be enumerated in this embodiment.

[0054] Please see Figure 8 , Figure 9 and Figure 10In this embodiment, the vehicle shell 910 includes a front shell 911 and a rear shell 912. The front shell 911 has the aforementioned accommodating space 9112, and the rear shell 912 has the aforementioned cabin 9121. The front shell 911 is connected to the front side of the rear shell 912 in the forward direction A of the transport vehicle 1000. The front side of the rear shell 912 has a windshield 9122 to connect to the cabin 9121. The windshield 9122 has a windshield to enclose the cabin 9121, and the driver observes the road conditions through the windshield 9122. In this embodiment, the front shell 911 includes two fenders 9111, which are respectively connected to the left and right sides of the rear shell 912. The two fenders 9111 are spaced apart to form the left and right exterior surfaces of the front shell 911. In this embodiment, the body 11 has two connecting sides 13, which are located on both sides of the body 11 and on the left and right sides of the transport vehicle 1000 in the forward direction A. In this embodiment, each connecting side 13 corresponds to one of the two fenders 9111, with each connecting side 13 spaced apart from its corresponding fender 9111. The engine hood 100 and the two fenders 9111 together constitute part of the exterior surface of the front housing 911. In this embodiment, each connecting side 13 is connected to at least two adjacent extension segments 121. In this embodiment, the extension directions of the two adjacent extension segments 121 are different, therefore the connecting side 13 has multiple sides with different extension directions. In this embodiment, the structure of the connecting side 13 is relatively stable and not easily deformed, which can ensure that the connecting side 13 and the fender 9111 fit well, and avoid large differences in the distance and height difference between the connecting side 13 and the fender 9111 in the extension direction of the connecting side 13, so as to improve the product qualification rate of the engine hood 100.

[0055] In this embodiment, the body 11 also includes a mating side 14, which is located on the side of the body 11 near the windshield 9122 and between two connecting sides 13. When the engine hood 100 is mounted on the vehicle housing 910, the mating side 14 is spaced apart from the windshield and is generally located above the bottom side of the windshield. In this embodiment, the mating side 14 is connected to at least one extension 121. In this embodiment, the mating side 14 is relatively long, and multiple second fixing parts 1212 can be provided on the extension 121 connected to the mating side 14 to improve the structural stability of the mating side 14.

[0056] Please see Figure 11In this embodiment, the inner panel 20 includes a fitting portion 21, a hollow portion 22, and a main body portion 23 connected in sequence. Specifically, the hollow portion 22 surrounds the outer periphery of the main body portion 23, and the fitting portion 21 surrounds the outer periphery of the hollow portion 22. The fitting portion 21 serves as the outer peripheral structure of the inner panel 20 and is connected to the outer panel 10. The outer peripheral structure of the fitting portion 21 is embedded in the snap-fit ​​groove 15 to connect the inner panel 20 and the outer panel 10. In this embodiment, multiple structures on the fitting portion 21 are welded to the edge portion 12. In this embodiment, the hollow portion 22 is provided with multiple through holes 221, which are arranged sequentially and at intervals around the outer periphery of the main body portion 23. With this configuration, the multiple through holes 221 effectively reduce the weight of the inner panel 20 and lower its rigidity, resulting in a lower overall rigidity of the engine hood 100. This reduces the severity of the impact of the engine hood 100 on pedestrians, allowing the engine hood 100 to meet pedestrian protection collision requirements. In this embodiment, the ratio of the sum of the dimensions of the plurality of through holes 221 in the circumferential direction of the hollowed-out portion 22 to the dimension of the hollowed-out portion 22 in the circumferential direction is greater than or equal to 50% and less than or equal to 85%, for example, 50%, 55%, 60%, 65%, 70%, 80%, 85%, etc.

[0057] In this embodiment, the main body 23 is provided with multiple weight-reducing holes 231. These holes further reduce the weight of the inner panel 20 and lower the rigidity of both the inner panel 20 and the engine hood 100. In this embodiment, the multiple weight-reducing holes 231 include a first weight-reducing hole 231. A connecting rib 232 is provided within the first weight-reducing hole 231, with its two ends connected to two positions on the edge structure of the first weight-reducing hole 231, so that the connecting rib 232 is supported within the first weight-reducing hole 231. With this configuration, the connecting rib 232 provides the main body 23 and the inner panel 20 with a certain rigidity to meet the torsional and lateral rigidity requirements of the inner panel 20. In this embodiment, there can be multiple connecting ribs 232 within the first weight-reducing hole 231. These multiple connecting ribs 232 can be arranged side-by-side, intersecting, or intersecting and connected to form a cross-shaped or star-shaped support structure. In this embodiment, whether or not other weight-reducing holes 231 are provided with connecting ribs 232, or the number of connecting ribs 232, can be specifically set according to actual conditions, such as the size of the weight-reducing holes 231, the shape of the weight-reducing holes 231, and the position of the weight-reducing holes 231 on the main body 23. In this embodiment, the multiple weight-reducing holes 231 may include at least one of the hole types such as triangular holes, quadrilateral holes, round holes, oblong holes, and hexagonal holes.

[0058] This application provides an engine hood 100, which includes an outer panel 10 and an inner panel 20. The outer panel 10 includes a body 11 and an edge portion 12. The edge portion 12 is connected to the periphery of the body 11 and is bent relative to the body 11 to define a snap-fit ​​groove 15. The inner panel 20 is stacked on one side of the body 11, and at least a portion of the periphery of the inner panel 20 is embedded in the snap-fit ​​groove 15 to connect the inner panel 20 and the outer panel 10. In this embodiment, the edge portion 12 includes a plurality of sequentially connected extension segments 121. The plurality of extension segments 121 are arranged circumferentially along the body 11. Each extension segment 121 has two connecting ends 1213 in its extension direction. The connecting ends 1213 of two adjacent extension segments 121 are connected to each other. Among the two connected ends 1213, at least one connecting end 1213 is provided with a first fixing part 1211 for connecting with the inner panel 20.

[0059] In this embodiment, the edging portion 12 includes multiple extension segments 121. At least one first fixing part 1211 is provided at the connection 122 of each pair of adjacent extension segments 121. Therefore, the edging portion 12 has multiple first fixing parts 1211. The multiple first fixing parts 1211 are arranged sequentially and spaced apart along the circumference of the edging portion 12. Multiple positions on the periphery of the inner plate 20 are fixedly connected to the multiple first fixing parts 1211, so that the connection relationship between the inner plate 20 and the outer plate 10 is relatively stable, the periphery structure of the engine hood 100 is relatively stable, and the engine hood 100 becomes a structure with strong integrity. In the actual production process of the engine hood 100, the engine hood 100 will undergo heat treatment processes, such as the high-temperature baking process during automobile painting. The structure of the engine hood 100 in this embodiment is relatively stable. The multiple first fixing parts 1211 provided on the outer panel 10 restrict the multiple structures of the inner panel 20 and the multiple structures of the outer panel 10 to each other, which can limit the deformation of the inner panel 20 or the outer panel 10 during the heat treatment process, reduce the defect rate of the engine hood 100, and improve the production efficiency of the engine hood 100.

[0060] In this application specification, certain terms are used to refer to specific components. Those skilled in the art will understand that hardware manufacturers may use different names to refer to the same component. The specification and claims do not distinguish components based on differences in name, but rather on differences in function. The term "comprising" throughout the specification and claims is an open-ended term and should be interpreted as "including but not limited to"; "generally" means that those skilled in the art can solve the technical problem within a certain margin of error and basically achieve the technical effect.

[0061] In the description of this application, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "inside", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the purpose of simplifying the description of this application and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0062] In this application, unless otherwise expressly specified or limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or merely surface contact. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0063] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0064] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0065] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.

Claims

1. An engine hood, characterized in that, include: The outer panel includes a body and an edge portion. The edge portion includes a plurality of sequentially connected extension segments. The plurality of extension segments are arranged circumferentially along the body. The edge portion is connected to the periphery of the body. The edge portion is bent relative to the body to define a snap-fit ​​groove with the body. as well as An inner plate is stacked on one side of the body, and at least a portion of the periphery of the inner plate is embedded in the snap-fit ​​groove. Each of the extension segments has two connecting ends in its extension direction, the connecting ends of two adjacent extension segments are connected to each other, and at least one of the two connecting ends connected to each other is provided with a first fixing part, the first fixing part being fixedly connected to the inner plate.

2. The engine hood as claimed in claim 1, characterized in that, At least one of the extension sections is provided with a second fixing part, which is located between the two connecting ends and is fixedly connected to the inner plate.

3. The engine hood as described in claim 1, characterized in that, The body has two connecting sides, which are located on opposite sides of the body. Each connecting side is adapted to be spaced apart from the fender of the vehicle shell, and each connecting side is connected to at least two of the extensions.

4. The engine hood as claimed in claim 1, characterized in that, The inner plate has a fitting part, a hollow part and a main body part connected in sequence. The hollow part surrounds the outer periphery of the main body part, the fitting part surrounds the outer periphery of the hollow part, and the fitting part is fitted into the snap-fit ​​groove. The hollowed-out portion is provided with multiple through holes, which are arranged sequentially and at intervals around the outer periphery of the main body.

5. The engine hood as described in claim 4, characterized in that, The main body is provided with a plurality of weight-reducing holes, and at least one of the weight-reducing holes is provided with a connecting rib, the two ends of which are respectively connected to two positions on the edge structure of the weight-reducing hole.

6. The engine hood as described in any one of claims 1 to 5, characterized in that, The first fixing part is located on the side of the edge portion away from the inner plate, and the first fixing part is welded to the inner plate.

7. The engine hood as claimed in claim 6, characterized in that, The first fixing part is welded to the inner plate to form a weld point. The ratio of the embedding depth of the weld point on the inner plate to the thickness of the inner plate is greater than or equal to 25% and less than or equal to 60%.

8. The engine hood as claimed in claim 6, characterized in that, The first fixing part is welded to the inner plate to form a weld point. The extension direction of the weld point relative to the edge part intersects with the direction perpendicular to the surface of the edge part to form an included angle β. The included angle β is greater than or equal to 10° and less than or equal to 50°.

9. A vehicle body, characterized in that, include: The vehicle housing has an accommodating space for accommodating the power unit; as well as The engine hood as described in any one of claims 1 to 8, wherein the engine hood is connected to the vehicle housing and covers the accommodating space.

10. A transport vehicle, characterized in that, include: Power unit; as well as The vehicle body as claimed in claim 9, wherein the vehicle body has an accommodating space to accommodate the power unit.

Images