Roof shoulder skin, skin fixing tool and vehicle

Abstract

The application relates to the technical field of automobile engineering, in particular to a roof shoulder skin, a skin fixing tool and a vehicle. The roof shoulder skin comprises a main body part, a groove bottom part and an outer groove wall, the main body part comprises a transversely extended top skin and a longitudinally extended side skin, the side skin, the groove bottom part and the outer groove wall form a U-shaped groove, and the inner side and / or the outer side of the outer groove wall are bent to form a reinforcing rib line. The bending structure is formed on the outer groove wall, the original plane plate is formed into a bending structure with a rib-shaped folding line, the structural strength and the deformation resistance of the outer groove wall are effectively improved, so that even if the outer groove wall is caught by fingers of workers or is held from the side during lifting and installation of the roof shoulder skin, the outer groove wall can disperse stress due to the folding line structure, and local bending or permanent deformation of the outer groove wall caused by concentrated stress can be avoided.

Description

Technical Field

[0001] This application relates to the field of automotive engineering technology, and in particular to a roof shoulder skin, a skin fixing fixture, and a vehicle. Background Technology

[0002] The roof shoulder panel is a metal or composite material panel covering the outer layer of the bus roof frame. It primarily covers the roof, shoulder, and sides. To prevent rainwater and frost from flowing from the roof onto the side windows and body, most buses require drainage channels. Related technologies integrate these channels directly into the body panel design, for example, through adhesive bonding, riveting, welding, or integral molding. For the roof shoulder panel, the drainage channel is a groove-like structure formed at one end. During manual handling of the roof shoulder panel, this end of the drainage channel becomes a point of grip for workers, especially as they may use their fingers to dig directly into the channel and their palms to hold the outer wall. Because the outer wall of the drainage channel is a flat structure, it is prone to bending and deformation during handling. Utility Model Content

[0003] This application provides a roof shoulder skin, a skin fixing fixture, and a vehicle to solve the technical problem in the prior art that the outer wall of the water channel on the roof shoulder skin is prone to bending and deformation during transportation.

[0004] In a first aspect, this application provides a roof shoulder skin, which includes a main body, a groove bottom and an outer groove wall. The main body includes a laterally extending top skin and a longitudinally extending side skin. The side skin, the groove bottom and the outer groove wall form a groove with a U-shaped cross section. The inner and / or outer sides of the outer groove wall are bent to form reinforcing ribs.

[0005] Furthermore, the area where the side skin and the bottom of the groove intersect inside the groove forms a first rounded corner; the area where the outer groove wall and the bottom of the groove intersect inside the groove forms a second rounded corner.

[0006] Furthermore, the bottom of the groove includes a first transverse section and a second transverse section that are fitted together, with the first transverse section located above the second transverse section. The outer groove wall includes a first longitudinal section and a second longitudinal section that are fitted together, with the first longitudinal section located inside the second longitudinal section. The same sheet material is formed sequentially by bending to form the main body, the first transverse section, the first longitudinal section, the second longitudinal section, and the second transverse section.

[0007] Furthermore, the ends of the first longitudinal segment and the second longitudinal segment away from the bottom of the groove are simultaneously bent toward the side skin to form the reinforcing rib; or the ends of the first longitudinal segment and the second longitudinal segment away from the bottom of the groove are simultaneously bent toward the side skin to form the reinforcing rib.

[0008] Furthermore, a gap opening is formed between the end of the first transverse segment away from the outer groove wall and the second transverse segment, and the gap opening is sealed by a first sealing strip.

[0009] Furthermore, the bottom of the groove includes a first transverse section, a third transverse section, and a second transverse section that are sequentially attached from top to bottom, and the outer groove wall includes a first longitudinal section, a third longitudinal section, and a second longitudinal section that are sequentially attached from the inside to the outside. The same sheet material is formed sequentially by bending to form the main body, the first transverse section, the first longitudinal section, the second longitudinal section, the second transverse section, the third transverse section, and the third longitudinal section.

[0010] Furthermore, the height of the third longitudinal segment is less than the height of the first longitudinal segment, and the first longitudinal segment bends toward the third longitudinal segment to form the reinforcing rib.

[0011] Furthermore, a gap opening is formed between the end of the first transverse segment away from the outer groove wall and the third transverse segment, and the gap opening is sealed by a second sealing strip.

[0012] Secondly, this application provides a skin fixing fixture, characterized in that it comprises: Roof frame; The roof shoulder skin provided in the first aspect of this application is attached to the outside of the roof frame; The fixture includes a C-shaped frame, a knob, and an extrusion head. One end of the C-shaped frame abuts against the side of the roof frame away from the roof shoulder skin. The knob is screwed to the other end of the C-shaped frame. The square tube is located between the extrusion head and the roof shoulder skin. The knob is used to drive the extrusion head closer to or away from the square tube.

[0013] Thirdly, this application provides a vehicle that includes the skin fixing fixture provided in the second aspect of this application.

[0014] The technical solutions provided in this application have the following advantages compared with the prior art: In the roof shoulder skin provided in this application embodiment, by forming a bending structure on the outer groove wall, the original flat plate is transformed into a bending structure with rib-like fold lines, which effectively improves the structural strength and deformation resistance of the outer groove wall. Thus, during the lifting and installation of the roof shoulder skin, even if the outer groove wall is gripped by the worker's fingers or subjected to lateral bending, the outer groove wall can distribute the force due to its fold line structure, and can also avoid local bending or permanent deformation of the outer groove wall due to concentrated force. Attached Figure Description

[0015] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0016] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] One or more embodiments are illustrated by way of example with reference numerals in the accompanying drawings. These illustrations do not constitute a limitation on the embodiments. Elements with the same reference numerals in the drawings are denoted as similar elements. Unless otherwise stated, the figures in the drawings are not to be limited by scale.

[0018] Figure 1 A cross-sectional view of the roof shoulder skin provided in the first embodiment of this application; Figure 2 for Figure 1 Enlarged detail of section A; Figure 3 A cross-sectional view of the roof shoulder skin provided in the second embodiment of this application; Figure 4 for Figure 3 Enlarged detail view of section B; Figure 5 A cross-sectional view of the roof shoulder skin provided in the third embodiment of this application; Figure 6 for Figure 5 Enlarged detail of section C; Figure 7 A structural schematic diagram of the roof shoulder skin and roof frame in the assembled state provided in an embodiment of this application; Figure 8 A cross-sectional view of a skin fixing fixture provided in one embodiment of this application; Figure 9 for Figure 8 Enlarged detail of section D; Figure 10A cross-sectional view of a skin fixing fixture provided in another embodiment of this application.

[0019] Explanation of reference numerals in the attached figures: 100. Main body; 110. Top skin; 120. Side skin; 130. Transition area; 200. Bottom of the groove; 210. First transverse section; 220. Second transverse section; 230. Third transverse section; 300. Outer trench wall; 310. Reinforcing rib; 320. First longitudinal section; 330. Second longitudinal section; 340. Third longitudinal section; 400. Welding plate; 500, Groove; 510, First fillet; 520, Second fillet; 610. First sealing strip; 620. Second sealing strip; 700, Roof frame; 800. Fixture; 810. C-shaped frame; 820. Knob; 830. Extrusion head; 900, square tube. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0021] The following disclosure provides numerous different embodiments or examples for implementing various structures of this application. To simplify the disclosure, specific examples of components and arrangements are described below. These are merely examples and are not intended to limit the scope of this application. Furthermore, reference numerals and / or letters may be repeated in different examples. Such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed.

[0022] For ease of description, spatial relative terms may be used in the text to describe the relative position or movement of one element or feature relative to another element or feature, as shown in the figure. These relative terms include, for example, "inside," "outside," "middle," "outer," "below," "below," "above," "front," "back," etc. Such spatial relative terms are intended to include different orientations of the device in use or operation, other than those depicted in the figure. For example, if the device in the figure undergoes a positional flip, orientation change, or change of motion, these directional indications will change accordingly. For instance, an element described as "below other elements or features" or "below other elements or features" will subsequently be oriented "above other elements or features" or "above other elements or features." Therefore, the example term "below" can include both upper and lower orientations. The device may be otherwise oriented (rotated 90 degrees or in other directions), and the spatial relative descriptors used in the text will be interpreted accordingly.

[0023] like Figure 1-6 As shown, the roof shoulder skin provided in this application embodiment includes a main body 100, a groove bottom 200, and an outer groove wall 300. The main body 100 includes a horizontally extending top skin 110 and a longitudinally extending side skin 120. The side skin 120, the groove bottom 200, and the outer groove wall 300 form a U-shaped groove 500. The inner and / or outer sides of the outer groove wall 300 are bent to form reinforcing ribs 310.

[0024] like Figure 7 As shown, the roof shoulder skin provided in this embodiment is used for installation on the outer side of the bus roof frame 700. For example... Figure 1-6As shown, the main body 100 includes a laterally extending top skin 110 and a longitudinally extending side skin 120. The connecting area of ​​the top skin 110 and the side skin 120 forms a transition area 130 corresponding to the shoulder (the connection between the roof and the side). The bottom 200 of the groove is connected to the lower end of the side skin 120, and the outer groove wall 300 is connected to the outer end of the bottom 200. The three together form an upward-opening groove 500 structure. This groove 500 is used to guide rainwater and prevent rainwater from flowing from the roof to the windows or body surface, thereby keeping the vehicle body clean. The groove 500 has a U-shaped cross-section. The bottom 200 of the U-shaped groove plays a supporting and guiding role, while the outer groove wall 300 serves as the outer wall structure of the groove 500, used to define the water flow boundary. To prevent the outer groove wall 300 from deforming during the handling or installation of the roof shoulder skin, a structural reinforcement design has been implemented for the outer groove wall 300 in this embodiment. Specifically, the outer groove wall 300 has a bent section on its inner and / or outer sides. After forming, this bent section forms a zigzag structure, namely a reinforcing rib 310. The bent section can extend continuously along the transverse direction of the outer groove wall 300, so that the reinforcing rib 310 runs through the entire length of the roof shoulder skin. This structure significantly improves the bending stiffness and overall structural strength of the outer groove wall 300 without increasing the material thickness. In this embodiment, by forming a bent structure on the outer groove wall 300, the original flat plate is transformed into a bent structure with rib-like zigzag lines, which effectively improves the structural strength and deformation resistance of the outer groove wall 300. Thus, during the lifting and installation of the roof shoulder skin, even if the outer groove wall 300 is gripped by workers' fingers or subjected to lateral bending, the outer groove wall 300 can distribute the force due to its zigzag structure, and can also avoid local bending or permanent deformation of the outer groove wall 300 due to concentrated force.

[0025] It should be noted that the directions mentioned in this application are all relative to the car. The side closer to the center of the car is the inner side, and the side farther away from the center of the car is the outer side. For example, the top skin 110 is located inside the side skin 120, the side skin 120 is located inside the groove 500, and the bottom of the groove 200 is located inside the outer groove wall 300.

[0026] In the specific manufacturing process, the outer groove wall 300 and its reinforcing ribs 310 can be formed by a single stamping process. A pre-bent groove is set on the sheet metal using a stamping die, and during the forming stage, the sheet metal undergoes plastic deformation at a preset angle, thereby forming an outer groove wall 300 structure with stable fold lines. Compared with methods such as welding reinforcement or pasting reinforcing plates, this structure has a higher degree of integration, reduces the number of parts and assembly steps, and improves production efficiency.

[0027] To further enhance the structural strength of the trench 500, both the bottom 200 and the outer wall 300 are multi-layered plate structures.

[0028] As a way to implement a layered structure, such as Figure 1-4 As shown, the bottom of the groove 200 includes a first transverse section 210 and a second transverse section 220 that are fitted together. The first transverse section 210 is located on the upper side of the second transverse section 220. The outer groove wall 300 includes a first longitudinal section 320 and a second longitudinal section 330 that are fitted together. The first longitudinal section 320 is located on the inner side of the second longitudinal section 330. The main body 100, the first transverse section 210, the first longitudinal section 320, the second longitudinal section 330, and the second transverse section 220 are formed sequentially by bending the same sheet material.

[0029] Through multiple bending processes, the sheet metal is continuously transitioned to form a multi-layered structure consisting of a top skin 110, a groove bottom 200, and an outer groove wall 300. This structure maintains the overall integrity of the parts while avoiding stress concentration and manufacturing errors caused by welding or riveting. Through this multi-layered design, the double-layered transverse section of the groove bottom 200 forms a laminated structure, significantly improving the rigidity and impact resistance of the groove bottom and preventing localized sagging or collapse during assembly or handling. Similarly, the double-layered longitudinal section of the outer groove wall 300, when in a fitted state, also forms a laminated structure, significantly improving the rigidity and impact resistance of the outer groove wall 300. This allows the outer groove wall 300 to maintain high bending and compressive strength when subjected to hand gripping, external impact, or transportation vibration, effectively preventing bending deformation. Furthermore, the laminated structure also has good vibration absorption and buffering effects, dispersing stress under external impact or transportation vibration and extending the service life of the roof shoulder skin. In addition, the layered structure formed by integral bending can create a natural sealing effect at the bending end to prevent moisture from seeping into the interlayer, thereby improving weather resistance and reliability.

[0030] In some implementations, such as Figure 1 and 2 As shown, the ends of the first longitudinal segment 320 and the second longitudinal segment 330 away from the bottom 200 of the groove are simultaneously bent towards the side skin 120 (i.e., inward) to form the reinforcing rib 310. Through this inward bending, the end of the outer groove wall 300 forms a locally concave structure, significantly improving the rigidity at the opening of the groove 500. When workers are handling the shoulder skin of the transport vehicle, their fingers are usually inserted into the groove 500 to grip the outer groove wall 300. This makes gripping easier, and the reinforcing rib 310 is located in the stress area, effectively dispersing the localized stress generated by the fingers' bending or pulling, preventing deformation of the outer groove wall 300 or warping of the opening edge, thereby improving the overall deformation resistance and structural reliability of the groove 500.

[0031] In other implementations, such as Figure 3 and 4As shown, the ends of the first longitudinal segment 320 and the second longitudinal segment 330 away from the bottom 200 of the tank are simultaneously bent in a direction away from the side skin 120 (i.e., outward) to form the reinforcing rib 310. This outward bending method not only enhances the compressive and bending resistance of the outer tank wall 300 under external force, but also forms a flared structure to a certain extent, which can increase the water collection range.

[0032] Both bending directions described above can form effective reinforcing ribs 310 in the structure. By introducing rib-like stiffness into the plate surface of the outer groove wall 300 through the bending lines, the bending, torsional, and warping resistance at the groove 500 is improved, thereby significantly reducing the deformation risk of the outer groove wall 300 during handling, assembly, or service. The specific bending direction adopted can be flexibly selected according to the vehicle body shape, drainage direction, and manufacturing process requirements.

[0033] The aforementioned laminated structure, formed by integral bending, can create a natural sealing effect at the bending end to prevent moisture from seeping into the interlayer, thus improving weather resistance and reliability. However, a gap opening will form between the end of the first transverse section 210 away from the outer groove wall 300 and the second transverse section 220. To further prevent moisture from entering the interior of the laminated structure through this gap opening, in a preferred embodiment, such as... Figure 2 and 4 As shown, a gap opening is formed between the end of the first transverse segment 210 away from the outer groove wall 300 and the second transverse segment 220. A first sealing strip 610 is provided at the gap opening to seal it. Specifically, the groove bottom 200 is composed of the first transverse segment 210 and the second transverse segment 220 that are fitted together and formed by integrally bending a sheet metal. During the bending process, a tiny gap opening naturally forms between the first transverse segment 210 and the second transverse segment 220 at the end away from the outer groove wall 300 due to material springback or corner gaps. If this gap opening is not treated, it may become a channel for external moisture or rainwater to seep into the interior of the laminated structure, which may lead to interlayer corrosion, aging, or bulging of the sheet metal after long-term use. Therefore, in this embodiment, a first sealing strip 610 is added at the gap opening. The first sealing strip 610 can be made of flexible materials such as rubber, foamed silicone, thermoplastic elastomer (TPE), or modified nitrile rubber, and is fixed to the opening of the gap by means of adhesive bonding, snap-fit, or co-extrusion molding. After the structure is closed, the first sealing strip 610 is tightly fitted with the surfaces of the first transverse section 210 and the second transverse section 220 to form a continuous sealing interface. In addition, the first sealing strip 610 can also provide a certain buffering effect during handling and assembly, preventing interlayer peeling or warping of the laminated panels due to slight deformation under external forces, further enhancing the overall stability and fatigue resistance of the structure.

[0034] Preferably, such as Figure 2 and 4 As shown, the second transverse segment 220 continues to extend laterally away from the outer groove wall 300, forming a welding plate 400 on the inner side of the side skin 120. The welding plate 400 and the side skin 120 are set at a preset angle. The side skin 120 is used to attach to the side of the roof frame 700, and the welding plate 400 is used to limit and weld to the lower end face of the roof frame 700, thereby improving the assembly accuracy and structural stability between the side skin 120 and the roof frame 700 while ensuring welding strength.

[0035] As another way to implement a layered structure, such as Figure 5 and 6 As shown, the bottom of the groove 200 includes a first transverse section 210, a third transverse section 230, and a second transverse section 220 sequentially attached from top to bottom. The outer groove wall 300 includes a first longitudinal section 320, a third longitudinal section 340, and a second longitudinal section 330 sequentially attached from the inside to the outside. The same sheet metal is bent to sequentially form the main body 100, the first transverse section 210, the first longitudinal section 320, the second longitudinal section 330, the second transverse section 220, the third transverse section 230, and the third longitudinal section 340. In this embodiment, a higher level of sheet metal bonding is formed at the bottom of the groove 200 and on the outer groove wall 300 through a three-layer stacked structure, constituting a multi-support system. By introducing the third transverse section 230 and the third longitudinal section 340, which serve as intermediate layers between the bottom 200 of the trench and the outer trench wall 300, a transitional support interface can be formed between the bottom 200 of the trench and the outer trench wall 300. This effectively disperses the transmission path of external loads within the laminated structure, significantly improving its resistance to bending and torsion. Specifically, in this three-layer laminated structure, the third transverse section 230 fills the space between the first transverse section 210 and the second transverse section 220, forming a multi-layered load-bearing system. This not only prevents single-layer plates from deforming under pressure but also absorbs stress concentration through the interlayer bonding interface, reducing the risk of fatigue crack propagation. Similarly, the multi-layered bonding structure of the first longitudinal section 320, the third longitudinal section 340, and the second longitudinal section 330 enhances the anti-bulging performance of the outer trench wall 300, further improving the overall structural stiffness and impact resistance. The three longitudinal sections of the outer tank wall 300 form a laminated structure when they are in a fitted state, which significantly improves the rigidity and impact resistance of the outer tank wall 300. This allows the outer tank wall 300 to maintain high bending and compressive strength when subjected to hand gripping, external impact, or transportation vibration, thereby effectively preventing the outer tank wall 300 from bending and deforming.

[0036] Furthermore, by bending and forming the same sheet metal as a single piece, not only is the continuity and geometric accuracy between the bottom 200 of the groove and the outer wall 300 of the groove guaranteed, but stress concentration and sealing hazards in the weld seams that may result from welding multiple plates are also avoided. The three-layer laminated structure, through control of the bending angle and interlayer fit during manufacturing, combines high strength, high sealing performance, and fatigue resistance.

[0037] In the above embodiment, the second transverse segment 220 continues to extend after bending, such that the third transverse segment 230 is sandwiched between the first transverse segment 210 and the second transverse segment 220, while the third longitudinal segment 340 is sandwiched between the first longitudinal segment 320 and the second longitudinal segment 330. This bending and extending structural layout ensures that the three-layered structure of the groove bottom 200 and the outer groove wall 300 forms only one gap opening on the inner side of the groove bottom 200 and the top of the outer groove wall 300. If the third transverse segment 230 is folded towards the side of the second transverse segment 220 away from the first transverse segment 210, then one gap opening will be formed on the inner side of the groove bottom 200 and the top of the outer groove wall 300. This embodiment achieves a more compact interlayer covering effect after structural stacking, while reducing one gap opening, lowering the risk of moisture, dust, and corrosive media entering the stacked structure, and significantly improving the overall sealing performance and weather resistance.

[0038] like Figure 6 As shown, a gap opening is formed between the end of the first transverse segment 210 away from the outer groove wall 300 and the third transverse segment 230, and the gap opening is sealed by a second sealing strip 620. Specifically, the groove bottom 200 is composed of the first transverse segment 210, the third transverse segment 230, and the second transverse segment 220, which are fitted and stacked together. The three are formed by integrally bending the sheet metal. During the bending connection process, a tiny gap opening naturally forms between the first transverse segment 210 and the third transverse segment 230 at the end away from the outer groove wall 300 due to material springback or corner gap. If this gap opening is not treated, it may become a channel for external moisture or rainwater to seep into the interior of the laminated structure, which may lead to interlayer corrosion, aging, or bulging of the sheet metal after long-term use. Therefore, in this embodiment, a second sealing strip 620 is added at the gap opening. The second sealing strip 620 can be made of flexible materials such as rubber, foamed silicone, thermoplastic elastomer (TPE), or modified nitrile rubber, and is fixed to the opening of the gap by means of adhesive bonding, snap-fit, or co-extrusion molding. After the structure is closed, the second sealing strip 620 is tightly fitted to the surfaces of the first transverse section 210 and the third transverse section 230 to form a continuous sealing interface. In addition, the second sealing strip 620 can also provide a certain buffering effect during handling and assembly, preventing interlayer peeling or warping of the laminated panels due to slight deformation under external forces, further enhancing the overall stability and fatigue resistance of the structure.

[0039] Preferably, such as Figure 6 As shown, the second transverse segment 220 continues to extend laterally away from the outer groove wall 300, forming a welding plate 400 on the inner side of the side skin 120. The welding plate 400 is formed by stacking the second transverse segment 220 and the third transverse segment 230 located on the inner side of the side skin. The welding plate 400 and the side skin 120 are set at a preset angle. The side skin 120 is used to attach to the side of the roof frame 700, and the welding plate 400 is used to limit and weld to the lower end face of the roof frame 700, thereby improving the assembly accuracy and structural stability between the side skin 120 and the roof frame 700 while ensuring welding strength. Through the above design, the side skin 120 and the welding plate 400 form a "lateral fit-bottom limit" mating relationship in structure. This not only ensures the assembly position accuracy between the roof shoulder skin and the roof frame 700, but also forms a stable stress support path during welding, thereby effectively avoiding skin deformation caused by welding stress concentration. Since the welding plate 400 is formed by a stacked structure of the second transverse section 220 and the third transverse section 230, it has better resistance to deformation and thermal stability under welding heat input compared to a single-layer welding plate 400 structure. At the same time, the multi-layer stress interface formed by the stacked structure can evenly distribute the stress in the welding area, improving the connection strength and fatigue life of the weld and the skin.

[0040] Based on the above implementation methods, such as Figure 6 As shown, the height of the third longitudinal segment 340 is less than the height of the first longitudinal segment 320, and the first longitudinal segment 320 bends toward the third longitudinal segment 340 to form the reinforcing rib 310. This structural design creates a thickness abrupt change zone in the outer groove wall 300 where the structure transitions from a three-layer to a two-layer structure, and this thickness abrupt change zone naturally forms the reinforcing rib 310 at the bend.

[0041] Specifically, in the three-layered outer channel wall 300, the first longitudinal section 320 is located on the innermost side, the third longitudinal section 340 is located in the middle layer, and the second longitudinal section 330 is located on the outermost side. Since the height of the third longitudinal section 340 is lower than the heights of the first and second longitudinal sections 320, during structural processing, at the end of the third longitudinal section 340, the upper area of ​​the first longitudinal section 320 can be bent towards the second longitudinal section 330, creating a localized contact area between the bent first longitudinal section 320 and the second longitudinal section 330, thus forming a zigzag reinforcing rib 310 at the bending point. This design significantly improves the local rigidity of the outer channel wall 300 in the transition section, effectively preventing structural deformation caused by workers bending the outer channel wall 300 with their fingers during handling. The reinforcing rib 310 formed by the bending not only strengthens the structure but also visually creates a zigzag contour, making the overall appearance of the roof shoulder skin more robust and aesthetically pleasing. Furthermore, since the reinforcing rib 310 is formed by bending the sheet metal itself, no additional welding or reinforcing parts are required, ensuring the overall lightweight design and consistency of the manufacturing process.

[0042] In some implementations, such as Figure 1-6 As shown, to improve the surface coverage of the roof shoulder skin during the painting process, a first rounded corner 510 is formed at the intersection of the side skin 120 and the groove bottom 200 within the groove 500; a second rounded corner 520 is formed at the intersection of the outer groove wall 300 and the groove bottom 200 within the groove 500. Specifically, in conventional structures, the connections between the side skin 120 and the groove bottom 200, and between the outer groove wall 300 and the groove bottom 200, are usually right-angled. This structure easily creates dead corners for paint mist during the painting process. Due to the limited fluidity and adhesion of the paint at corners, the paint layer accumulates unevenly at the bottom corners, and some areas cannot even be covered by the paint, resulting in defects such as uneven paint film thickness or localized bare spots. In this embodiment, by designing the above-mentioned junction as a rounded corner structure with a rounded transition, there are no sharp corners inside the groove 500. During the painting process, the paint mist can enter the rounded corner transition area more smoothly with the airflow to form a continuous and uniform paint film layer. Furthermore, the rounded corner structure is also conducive to the drainage and drying process of the subsequent coating, preventing the paint from accumulating at the bottom corner of the groove 500 or forming bubbles, and improving the density and weather resistance of the surface paint film.

[0043] like Figure 8-10As shown in the illustration, this application also provides a skin fixing fixture, which includes a roof frame 700, a roof shoulder skin, a clamp 800, and a square tube 900. The roof shoulder skin is attached to the outside of the roof frame 700; the clamp 800 includes a C-shaped frame 810, a knob 820, and an extrusion head 830. One end of the C-shaped frame 810 abuts against the side of the roof frame 700 opposite to the roof shoulder skin, and the knob 820 is screwed to the other end of the C-shaped frame 810. The square tube 900 is located between the extrusion head 830 and the roof shoulder skin, and the knob 820 is used to drive the extrusion head 830 closer to or further away from the square tube 900.

[0044] The square tube 900 can evenly distribute the extrusion pressure, preventing the extrusion head 830 from directly pressing against the surface of the roof shoulder skin, which could cause deformation or scratches. During use, the operator rotates the knob 820 to bring the extrusion head 830 closer to the square tube 900, thereby firmly pressing the roof shoulder skin against the roof frame 700 to achieve temporary fixation of the skin. When release is needed, the knob 820 is rotated in the opposite direction to move the extrusion head 830 away from the square tube 900, releasing the fixing force and facilitating the disassembly or adjustment of the position of the roof shoulder skin.

[0045] Through the above design, this embodiment can provide reliable fixing support during the assembly or painting of the roof shoulder skin, effectively preventing skin displacement or warping. Simultaneously, since the square tube 900 acts as a medium to disperse extrusion pressure, the risk of localized deformation is reduced, improving skin installation accuracy and surface quality. Furthermore, this tooling has a simple structure, is easy to adjust, and is suitable for roof shoulder skins of different thicknesses and shapes, exhibiting good versatility and ease of operation. Moreover, the skin fixing tooling utilizes the existing roof frame 700 as a natural mold, reducing the cost of dedicated tooling.

[0046] During the assembly process, such as Figure 10 As shown, each roof shoulder skin is equipped with at least two sets of clamps 800 and square tubes 900. The curved roof shoulder skin is assembled with the roof frame 700. The inherent curvature of the two sides of the roof frame 700 is used as the shaping reference. The two sets of clamps 800 are used to press the two ends of the roof shoulder skin to achieve a close fit with the frame. After holding for 20-30 seconds to eliminate the springback, it is fixed to the roof frame 700. Then it flows into the welding station for welding. After welding is completed, the clamps 800 and square tubes 900 can be removed.

[0047] This application also provides a vehicle comprising a body and a roof shoulder panel. The roof shoulder panel is the same as that provided in the foregoing embodiments of this application, comprising a main body 100, a groove bottom 200, and an outer groove wall 300. The main body 100 includes a laterally extending top panel 110 and a longitudinally extending side panel 120. The side panel 120, the groove bottom 200, and the outer groove wall 300 form a U-shaped groove 500. The inner and / or outer sides of the outer groove wall 300 are bent to form reinforcing ribs 310. The groove bottom 200 and the outer groove wall 300 may be a two- or three-layer stacked structure, with the fold line formed at the bent end of the outer groove wall 300 serving as the reinforcing rib 310. Other specific structures and technical effects of the roof shoulder panel can be referred to the specific embodiments described above, and will not be repeated here.

[0048] By adopting the roof shoulder skin provided in the embodiments of this application, the roof shoulder skin of the vehicle has higher resistance to deformation, welding strength and corrosion resistance during handling, assembly and long-term use, while maintaining an aesthetically pleasing surface coating effect, thereby improving the reliability and user experience of the whole vehicle.

[0049] It should be understood that the terminology used herein is for the purpose of describing particular exemplary embodiments only and is not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms “a,” “an,” and “described” as used herein may also include the plural forms. The terms “comprising,” “including,” “containing,” and “having” are inclusive and therefore indicate the presence of the stated features, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, steps, operations, elements, components, and / or combinations thereof. The method steps, processes, and operations described herein are not construed as requiring them to be performed in a particular order described or illustrated unless the order of performance is explicitly indicated. It should also be understood that additional or alternative steps may be used.

[0050] Although terms such as first, second, third, etc., may be used in this document to describe multiple elements, components, regions, layers, and / or segments, these elements, components, regions, layers, and / or segments should not be limited by these terms. These terms may be used only to distinguish one element, component, region, layer, or segment from another. Unless the context clearly indicates otherwise, terms such as "first," "second," and other numerical terms used herein do not imply order or sequence. Therefore, the first element, component, region, layer, or segment discussed below may be referred to as the second element, component, region, layer, or segment without departing from the teachings of the exemplary embodiments.

[0051] The above description is merely a specific embodiment of this application, enabling those skilled in the art to understand or implement this 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 this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A roof shoulder skin, characterized in that, The device includes a main body (100), a groove bottom (200), and an outer groove wall (300). The main body (100) includes a horizontally extending top skin (110) and a longitudinally extending side skin (120). The side skin (120), the groove bottom (200), and the outer groove wall (300) form a U-shaped groove (500). The inner and / or outer sides of the outer groove wall (300) are bent to form reinforcing ribs (310). The area where the side skin (120) and the groove bottom (200) intersect inside the groove (500) forms a first rounded corner (510). The area where the outer groove wall (300) and the groove bottom (200) intersect inside the groove (500) forms a second rounded corner (520). The bottom of the groove (200) includes a first transverse section (210), a third transverse section (230) and a second transverse section (220) that are attached from top to bottom. The outer groove wall (300) includes a first longitudinal section (320), a third longitudinal section (340) and a second longitudinal section (330) that are attached from inside to outside. The same sheet material is formed sequentially by bending to form the main body (100), the first transverse section (210), the first longitudinal section (320), the second longitudinal section (330), the second transverse section (220), the third transverse section (230) and the third longitudinal section (340).

2. The roof shoulder skin according to claim 1, characterized in that, The height of the third longitudinal segment (340) is less than the height of the first longitudinal segment (320), and the first longitudinal segment (320) bends toward the third longitudinal segment (340) to form the reinforcing rib (310).

3. The roof shoulder skin according to claim 2, characterized in that, A gap opening is formed between the end of the first transverse segment (210) away from the outer groove wall (300) and the third transverse segment (230), and the gap opening is sealed by a second sealing strip (620).

4. A skin fixing fixture, characterized in that, include: Roof frame (700); The roof shoulder skin as described in any one of claims 1-3, wherein the roof shoulder skin is attached to the exterior of the roof frame (700); The fixture (800) includes a C-shaped frame (810), a knob (820), and an extrusion head (830). One end of the C-shaped frame (810) abuts against the side of the roof frame (700) away from the roof shoulder skin. The knob (820) is screwed to the other end of the C-shaped frame (810). The square tube (900) is located between the extrusion head (830) and the roof shoulder skin. The knob (820) is used to drive the extrusion head (830) to move closer to or away from the square tube (900).

5. A vehicle, characterized in that, Including the roof shoulder skin as described in any one of claims 1-3.

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