Roof panel and roof system

Abstract

The utility model belongs to the technical field of building structures, and particularly relates to a roof panel and a roof system.The roof panel comprises a surface layer composite board, a bottom layer metal board and a middle interlayer, the surface layer composite board comprises a surface layer metal board and a coiled material waterproof layer formed on the surface layer metal board in a composite mode, and the surface layer composite board comprises two lockrand parts; the bottom-layer metal plate comprises a bottom-layer main body part, and a male connecting part and a female connecting part which are respectively arranged at two ends of the bottom-layer main body part. When the adjacent roof panels are connected, the adjacent edge locking parts are subjected to edge locking to form a curled edge structure, and the adjacent male connecting parts and female connecting parts are connected in an inserted mode to form an inserted connection structure. According to the roof panel, the surface layer metal plate and the coiled material waterproof layer are subjected to edge locking together so that the coiled material waterproof layer can block the structure gap generated after the surface layer metal plate forms the edge curling structure, the bottom layer metal plate is tightly connected through the inserting structure formed by the connecting male part and the connecting female part, and therefore the sealing performance of the connecting position of the adjacent roof panels is improved.

Description

Technical Field

[0001] This application belongs to the technical field of building structures, and particularly relates to a roof panel and a roof system. Background Art

[0002] The roof structures of some buildings are formed by connecting metal roof systems to each other. The metal roof system is composed of multiple metal roof panels, and adjacent metal roof panels are connected by welding. Due to factors such as the size difference between adjacent roof panels, the flatness difference caused by the construction process, and the welding quality of the welds, water leakage gaps will be formed between the metal roof panels.

[0003] In the prior art, a locking edge process is used to connect adjacent metal roof panels. In view of the above related technologies, since the metal roof panel is a rigid material part, structural gaps will be generated after the locking edge process for the rigid material part, and there is also a potential water leakage hazard. Utility Model Content

[0004] The purpose of this application is to provide a roof system, aiming to improve the sealing performance at the connection of the roof panels.

[0005] To achieve the above purpose, on the one hand, this application provides a roof panel, including:

[0006] A surface composite board, including a surface metal board and a coil waterproof layer formed on the upper side of the surface metal board. Locking edge parts for locking edges are respectively formed at the two connection ends of the surface composite board;

[0007] A bottom metal board, located below the surface composite board. The bottom metal board includes a bottom main body part, and a connection male part and a connection female part respectively arranged at both ends of the bottom main body part. The contour of the connection female part matches that of the connection male part; and,

[0008] An intermediate sandwich layer, arranged between the surface composite board and the bottom metal board.

[0009] In some embodiments, the connection male part includes a first horizontal wall, the connection female part includes a second horizontal wall, the first horizontal wall and the second horizontal wall are parallel to each other, and the first horizontal wall is located below the second horizontal wall.

[0010] In some embodiments, the first horizontal wall and the bottom main body part are arranged in alignment in the up and down direction.

[0011] In some embodiments, the connection male part includes a first inclined wall, the first inclined wall connects the bottom main body part and the first horizontal wall, the connection female part includes a second inclined wall, the second inclined wall connects the bottom main body part and the second horizontal wall, and the inclined directions of the first inclined wall and the second inclined wall are the same.

[0012] In some embodiments, a first flanging portion extending upward is formed at an end of the first horizontal wall, a second flanging portion extending upward is formed at an end of the second horizontal wall, and the first flanging portion and the second flanging portion are parallel to each other.

[0013] The second aspect of the present application provides a roofing system, including multiple pieces of the above-mentioned roofing panels. The locking edges of any two adjacent roofing panels are formed as rolled edges to form a rolled-edge structure that is snap-fitted and connected to each other; the male connecting portion and the female connecting portion of any two adjacent roofing panels are inserted and connected to each other to form an insertion structure.

[0014] In some embodiments, the roofing system further includes a sealant disposed in the insertion structure, and the sealant is used to seal the insertion gap between the male connecting portion and the female connecting portion.

[0015] In some embodiments, the roofing system further includes a fixing bracket connected to the roof purlin, and two ends of the fixing bracket are respectively connected to the rolled-edge structure and the insertion structure.

[0016] In some embodiments, the fixing bracket includes a bent portion that is inserted and cooperated with the insertion structure, and a fastener is passed through the bent portion and the male connecting portion, and the fastener extends to be fixedly connected to the roof purlin.

[0017] In some embodiments, the rolled-edge structure is a multi-layer rolled-edge structure, and a waterproof sealing structure is provided at the bite seam of the multi-layer rolled-edge structure.

[0018] By the above technical solutions, the roofing panels and the roofing system provided by the specific embodiments of the present application have the following beneficial effects:

[0019] Multiple roofing panels are connected to each other to form a roofing system and are used as the roofing structure of a building. When connecting adjacent roofing panels, the adjacent locking edges are locked to form a rolled-edge structure, so as to realize the connection of the surface composite boards of adjacent roofing panels, and the adjacent male connecting portion and female connecting portion are inserted to form an insertion structure, so as to realize the connection of the bottom metal plates of adjacent roofing panels. In the present application, by locking the surface metal plate and the coil waterproof layer together, the coil waterproof layer seals the structural gap generated after the surface metal plate forms a rolled-edge structure, and the insertion structure formed by the male connecting portion and the female connecting portion is used to tightly connect the bottom metal plates, so as to realize the tight connection of adjacent roofing panels, and further improve the sealing performance at the connection of adjacent roofing panels.

[0020] Other features and advantages of the embodiments of the present application will be described in detail in the subsequent specific embodiment part. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The accompanying drawings are used to provide a further understanding of the embodiments of the present application and form a part of the specification. Together with the following specific embodiments, they are used to explain the embodiments of the present application, but do not constitute a limitation to the embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on the structures shown in these drawings. In the drawings:

[0022] Figure 1 It is a schematic structural diagram of a roof panel in a specific embodiment according to the present application;

[0023] Figure 2 It is a schematic structural diagram of a surface layer composite board in a specific embodiment according to the present application;

[0024] Figure 3 is Figure 2 an enlarged schematic diagram of part A in

[0025] Figure 4 It is a schematic structural diagram of a male connecting part in a specific embodiment according to the present application;

[0026] Figure 5 It is a schematic structural diagram of a female connecting part in a specific embodiment according to the present application;

[0027] Figure 6 It is a schematic structural diagram of a roof system in a specific embodiment according to the present application;

[0028] Figure 7 is Figure 6 an enlarged schematic diagram of part B (insertion structure) in

[0029] Figure 8 is Figure 6 an enlarged schematic diagram of part C (edge locking structure) in

[0030] Figure 9 It is a schematic structural diagram of a fixing bracket in a specific embodiment according to the present application.

[0031] Explanation of reference numerals

[0032] 100. Roofing system; 1. Roofing board; 2. Surface composite board; 21. Waterproofing roll; 22. Surface metal plate; 23. Middle section; 24. First inclined section; 25. Second inclined section; 26. First edge section; 27. Second edge section; 3. Intermediate layer; 31. Insulation material; 32. Foaming material; 4. Bottom metal plate; 41. Bottom main body; 42. Connecting male part; 421. First horizontal wall; 422. First inclined wall; 423. First folding part; 424. Third folding part; 425. First vertical wall; 426. Third vertical wall; 43. Connecting female part; 431. Second horizontal wall; 43 2. Second inclined wall; 433. Second folded edge portion; 434. Fourth folded edge portion; 435. Second vertical wall; 436. Fourth vertical wall; 5. First locking edge portion; 51. First vertical section; 52. First horizontal section; 53. Third vertical section; 6. Second locking edge portion; 61. Second vertical section; 62. Second horizontal section; 200. Fixed bracket; 210. Vertical portion; 220. Bending portion; 230. Curled edge portion; 231. Third horizontal section; 232. Fourth vertical section; 300. Multiple curled edge structure; 310. Engagement seam; 400. Plug-in structure; 410. Plug-in gap; 500. Fastener; 600. Roof purlin. DETAILED DESCRIPTION

[0033] The specific implementation of the present application is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described here is only used to illustrate and explain the present application, and is not used to limit the present application.

[0034] The roofing panel 1 and the roofing system 100 according to the present application will be described below with reference to the accompanying drawings.

[0035] like Figures 1 to 3 As shown, a specific embodiment of the present application provides a roof panel 1, including a surface composite plate 2, a bottom metal plate 4 and an intermediate interlayer 3, wherein the surface composite plate 2 includes a surface metal plate 22 and a rolled waterproof layer 21 compositely formed above the surface metal plate 22, and the two connecting ends of the surface composite plate 2 are respectively formed with locking portions for locking edges; the bottom metal plate 4 is located below the surface composite plate 2, and the bottom metal plate 4 includes a bottom main body 41 and a connecting male portion 42 and a connecting female portion 43 respectively arranged at both ends of the bottom main body 41, and the connecting female portion 43 matches the contour of the connecting male portion 42; the intermediate interlayer 3 is arranged between the surface composite plate 2 and the bottom metal plate 4.

[0036] When the roof panel 1 is in use, it is generally used as a system, that is, multiple roof panels 1 are connected to each other to form a roofing system 100. The roofing system 100 is fixedly connected to the roof purlin 600 of the building as the roof structure of the building, and the roof structure needs to meet the requirements of strength, heat preservation and airtightness. In this application, the surface metal plate 22 and the bottom metal plate 4 enable the roof panel 1 and the roofing system 100 to have higher strength; the intermediate sandwich 3 between the surface metal plate 22 and the bottom metal plate 4 enables the roof panel 1 and the roofing system 100 to have better heat preservation performance; by locking the edge of the surface metal plate 22 and the coiled waterproof layer 21 together, the coiled waterproof layer 21 seals the structural gap generated after the surface metal plate 22 forms a curled edge structure, and the adjacent bottom metal plates 4 are tightly connected through the insertion structure 400 formed by the connecting male part 42 and the connecting female part 43, so as to realize the tight connection of adjacent roof panels 1, and further improve the airtightness at the connection of adjacent roof panels 1 so that the roofing system 100 has better airtightness.

[0037] It should be noted that since the surface metal plate 22 is made of rigid material, there must be a gap, that is, a structural gap, between the two surface metal plate 22 parts forming the curled edge structure. Once there is accumulated water on the roof structure of the building, it will flow into the roof structure of the building from the structural gap, resulting in water seepage of the building. In this application, the surface metal plate 22 is covered with a coiled waterproof layer 21. After the structural gap is formed, the coiled waterproof layers 21 on the two surface metal plates 22 can be mutually attached and connected to realize the sealing of the structural gap.

[0038] It should be noted that in this application, unless otherwise stated, the orientation words "upper", "lower", "left" and "right" used are the directions shown in the figure. In the exemplary embodiment of this application, the surface composite board 2 is located above the bottom metal plate 4, the connecting female part 43 is located on the right side, the connecting male part 42 is located on the left side, the edge-locking part on the right side is the first edge-locking part 5, and the edge-locking part on the left side is the second edge-locking part 6.

[0039] As Figure 4 and Figure 5 shown, in some embodiments, the connecting male part 42 forms an insertion protrusion, the connecting female part 43 forms an insertion groove, and the insertion protrusion and the insertion groove are inserted and matched to form an insertion structure 400. By connecting adjacent bottom metal plates 4 through the insertion structure 400, the connection process is simplified, so as to speed up the connection of the roof panel 1, and further speed up the construction efficiency of the roofing system 100.

[0040] Specifically, the male connecting part 42 includes a first horizontal wall 421 and a first inclined wall 422. Among them, the first inclined wall 422 connects the left end of the first horizontal wall 421 and the left end of the bottom main body part 41. The first horizontal wall 421 extends rightward to be arranged in alignment with the bottom main body part 41 in the up-and-down direction, that is, the right end of the projection of the first horizontal wall 421 in the up-and-down direction is within the projection range of the bottom main body part 41 in the up-and-down direction; the female connecting part 43 includes a second horizontal wall 431 and a second inclined wall 432. Among them, the second inclined wall 432 connects the right end of the bottom main body part 41 and the left end of the second horizontal wall 431. The second horizontal wall 431 extends rightward to extend out of the bottom main body part 41, that is, the right end of the projection of the second horizontal wall 431 in the up-and-down direction is outside the projection range of the bottom main body part 41 in the up-and-down direction.

[0041] Furthermore, the first horizontal wall 421 and the second horizontal wall 431 are parallel to each other, and the first horizontal wall 421 is located below the second horizontal wall 431. In other words, the first inclined wall 422 and the first horizontal wall 421 form a plugging protrusion protruding leftward, and the second inclined wall 432 and the second horizontal wall 431 form a plugging groove recessed leftward, and the formed plugging structure 400 is that the plugging protrusion is inserted into the plugging groove. It can be seen that the processing technologies of both the male connecting part 42 and the female connecting part 43 are relatively simple, and the tight connection of the bottom metal plate 4 can be realized through simple processing technologies.

[0042] Preferably, the inclination directions of the first inclined wall 422 and the second inclined wall 432 are the same and the inclination angles are consistent, that is, after the male connecting part 42 and the female connecting part 43 are plugged and matched to form the plugging structure 400, the first inclined wall 422 and the second inclined wall 432 can be closely attached, so as to increase the overlapping area of the male connecting part 42 and the female connecting part 43 and reduce the plugging gap 410 of the plugging structure 400, and further improve the sealing performance at the connection of adjacent roof panels 1.

[0043] Those skilled in the art can understand that the male connecting part 42 may further include a first vertical wall 425, the first vertical wall 425 connects the first inclined wall 422 and the first horizontal wall 421, the female connecting part 43 may further include a second vertical wall 435, the second vertical wall 435 connects the second inclined wall 432 and the second horizontal wall 431, and both the first vertical wall 425 and the second vertical wall 435 extend in the up-and-down direction. By arranging the first vertical wall 425 to connect the first inclined wall 422 and the first horizontal wall 421, the formation of sharp corners of the plugging protrusion can be avoided. By arranging the second vertical wall 435 to connect the second inclined wall 432 and the second horizontal wall 431, the formation of sharp corners of the plugging groove can be avoided. Since sharp corners will cause insufficient strength of the plugging groove and the plugging protrusion and deformation will occur, the arrangement of the first vertical wall 425 and the second vertical wall 435 can strengthen the strength of the male connecting part 42 and the female connecting part 43.

[0044] Similarly, the male connecting part 42 may further include a third vertical wall 426, and the third vertical wall 426 connects the bottom layer main body part 41 and the first inclined wall 422. The female connecting part 43 may further include a fourth vertical wall 436, and the fourth vertical wall 436 connects the bottom layer main body part 41 and the second inclined wall 432. By providing the third vertical wall 426 to connect the bottom layer main body part 41 and the first inclined wall 422, and by providing the fourth vertical wall 436 to connect the bottom layer main body part 41 and the second inclined wall 432, the strength of the male connecting part 42 and the female connecting part 43 can be enhanced.

[0045] In some embodiments, the surface layer composite board 2 includes a surface layer main body part, a first edge-locking part 5 located on the right side of the surface layer main body part, and a second edge-locking part 6 located on the left side of the surface layer main body part. The first edge-locking part 5 and the second edge-locking part 6 are used to be buckled and connected with each other as edge curls to form an edge curl structure, and a plurality of structural protrusions are formed on the surface layer main body part. The surface layer composite board 2 includes a surface layer metal board 22 and a coiled material waterproof layer 21. The surface layer metal board 22 is used to form the roof main structure of the house roof structure, and the coiled material waterproof layer 21 is used to form the roof waterproof structure of the house roof structure. Generally, the construction of the roof waterproof structure is carried out after the construction of the house roof structure is completed. In this application, by forming an edge curl structure with the first edge-locking part 5 and the second edge-locking part 6, the simultaneous construction of the roof main structure and the roof waterproof structure can be realized, thereby shortening the construction period of the house roof structure.

[0046] It should be noted that the edge curl structure refers to a structure in which two edge-locking parts are attached to each other and form a tightly overlapped structure after multiple bending deformations. The number of edge curl layers of the edge curl structure refers to the number of overlapping plates after being radially cut. When the number of edge curl layers exceeds two, it is a multi-edge curl structure 300. Commonly seen are double-edge curl structures and triple-edge curl structures. Among them, the double-edge curl structure includes five overlapping edge curls, and the triple-edge curl structure includes seven overlapping edge curls. The multi-edge curl structure 300 can provide better sealing performance for the connection of the surface layer composite board 2, thereby improving the sealing performance at the connection of adjacent roof panels 1.

[0047] In the exemplary embodiment of the present application, the first edge-locking part 5 and the second edge-locking part 6 can form a double-edge curl structure, and the construction process of the double-edge curl structure is relatively simple and has good sealing performance.

[0048] Specifically, the first edge-locking portion 5 includes a first vertical segment 51, a first horizontal segment 52, and a third vertical segment 53 connected in sequence. Both the first vertical segment 51 and the third vertical segment 53 extend in the up-and-down direction, the first horizontal segment 52 extends in the left-and-right direction, the lower end of the first vertical segment 51 is connected to the right end of the main body portion, the left end of the first horizontal segment 52 is connected to the upper end of the first vertical segment, and the upper end of the third vertical segment 53 is connected to the right end of the first horizontal segment 52. The second edge-locking portion 6 includes a second vertical segment 61 and a second horizontal segment 62 connected in sequence. The second vertical segment 61 extends in the up-and-down direction, the second horizontal segment 62 extends in the left-and-right direction, the lower end of the second vertical segment 61 is connected to the left end of the main body portion, and the left end of the second horizontal segment 62 is connected to the upper end of the second vertical segment 61.

[0049] Furthermore, the surface layer main body portion includes a middle segment 23, a first inclined segment 24, a second inclined segment 25, a first edge segment 26, and a second edge segment 27. Among them, the first inclined segment 24 is connected to the right end of the middle segment 23, the first edge segment 26 is connected to the right end of the first inclined segment 24, the first plate edge portion is connected to the right end of the first edge segment 26, and the right end of the first edge segment is connected to the lower end of the first vertical segment 51; the second inclined segment 25 is connected to the left end of the middle segment 23, the second edge segment 27 is connected to the left end of the second inclined segment 25, the second plate edge portion is connected to the left end of the second edge segment 27, and the left end of the second edge segment is connected to the lower end of the second vertical segment 61; the included angles between the first inclined segment 24 and the second inclined segment 25 and the middle segment 23 are both obtuse angles, and both the first edge segment 26 and the second edge segment 27 extend in the left-and-right direction.

[0050] Those skilled in the art can understand that the present application is not limited to the above double seaming structure, and can also be a single seaming structure, a triple seaming structure, and other structural forms that can achieve edge locking, which should also belong to the protection scope of the present application. Those skilled in the art can make adaptive improvements to the first edge-locking portion 5 and the second edge-locking portion 6 on the basis of the present application when adopting other structural forms.

[0051] In some embodiments, the intermediate interlayer 3 includes a heat-insulating material component 31 and a foaming material component 32. The foaming material component 32 is disposed at both ends of the heat-insulating material component 31 and closes the gap between the surface layer composite board 2 and the bottom metal plate 4.

[0052] Those skilled in the art can understand that the foam material component 32 can fully fill the gap and closely fit with the adjacent structural components, that is, the surface layer metal plate 22 and the bottom layer metal plate 4 in this application, as well as the connecting male part 42 and the connecting female part 43 of the bottom layer metal plate 4, so as to prevent water from flowing into the space between the surface layer metal plate 22 and the bottom layer metal plate 4 through the leakage gap, thereby extending the service life of the roof panel 1. The thermal insulation material component 31 can well improve the thermal insulation performance of the roof panel 1. The specific compositions of the thermal insulation material component 31 and the foam material component 32 are well-known to those skilled in the art and do not belong to the core improvement part of this application, so they will not be elaborated here.

[0053] As Figures 6 to 8 shown, a specific embodiment of this application further provides a roofing system 100, which includes multiple pieces of the above-mentioned roof panels 1. The locking edges of any two adjacent roof panels 1 are formed as curled edges to form a curled edge structure that is mutually buckled and connected; the connecting male part 42 and the connecting female part 43 of any two adjacent roof panels 1 are mutually inserted and connected to form an insertion structure 400. Since the roofing system 100 adopts all embodiments of the roof panel 1, the roofing system 100 has all the beneficial effects brought by the roof panel 1.

[0054] As Figure 9 shown, in some embodiments, the roofing system 100 further includes a fixing bracket 200 connected to the roof purlin 600. The two ends of the fixing bracket 200 are respectively connected to the curled edge structure and the insertion structure 400. The roof purlin 600 is the main load-bearing structure for the connection between the building and the roofing system 100, and the fixing bracket 200 is the main load-bearing structure for the connection between the roofing system 100 and the roof purlin 600. Therefore, the connection strength between the fixing bracket 200 and the roofing system 100 has a greater influence on the connection strength between the roofing system 100 and the building. In other words, by strengthening the connection strength between the fixing bracket 200 and the roofing system 100, the connection strength between the roofing system 100 and the building can be strengthened, thereby improving the reliability of the roofing system 100.

[0055] Specifically, the fixing bracket 200 includes a vertical portion 210 extending in the up and down direction, a curled edge portion 230 connected to the upper end of the vertical portion 210, and a bent portion 220 connected to the lower end of the vertical portion 210. Among them, the curled edge portion 230 and the first locking edge 5 and the second locking edge 6 together form a multi-curled edge structure 300, and the bent portion 220 is connected to the insertion structure 400 and connected to the roof purlin 600.

[0056] Further, the vertical portion 210 is located between two adjacent roof panels 1. After the two roof panels 1 are placed in position, first, the first locking edge portion 5, the curling portion 230, and the second locking edge portion 6 are stacked in sequence from outside to inside; second, the bending portion 220 is attached to the connecting male portion 42 and a fastener 500 is passed through, and the fastener 500 extends to be fixedly connected to the roof purlin 600; second, the connecting female portion 43 is sleeved on the connecting male portion 42 and the bending portion 220 to form a plug-in structure 400; finally, the first locking edge portion 5, the curling portion 230, and the second locking edge portion 6 are subjected to a locking operation to form a curled edge structure.

[0057] In the present application, by connecting the upper and lower ends of the fixing bracket 200 to the curled edge structure and the plug-in structure 400 respectively, the connection strength between the fixing bracket 200 and the roofing system 100 is enhanced, and further the connection strength between the roofing system 100 and the building is enhanced.

[0058] In some embodiments, the bending portion 220 of the fixing bracket 200 is attached to the first horizontal wall 421 of the connecting male portion, and the fastener 500 sequentially passes through the bending portion 220, the first horizontal wall 421, the bottom main body portion 41, and the roof purlin 600, thereby enhancing the connection strength between the fastener 500 and the roofing system 100, and further enhancing the connection strength between the roofing system 100 and the building.

[0059] Since the second horizontal wall 431 is located above the first horizontal wall 421, an insertion gap will be formed between the second horizontal wall 431 and the first horizontal wall 421 after the connecting male portion 42 and the connecting female portion 43 are inserted and connected, and the bending portion 220 is exactly located within the insertion gap. Among them, the right end of the first horizontal wall 421 is located on the right side of the vertical portion 210 of the fixing bracket 200, and the left end of the second horizontal wall 431 is located on the left side of the vertical portion 210 of the fixing bracket 200.

[0060] Preferably, the right end of the first horizontal wall 421 is turned up to form a first folded edge portion 423, and the left end of the second horizontal wall 431 is turned up to form a second folded edge portion 433. The first folded edge portion 423 and the second folded edge portion 433 are parallel to each other and extend in the up and down direction. The fixing bracket 200 is positioned and limited by the first folded edge portion 423 and the second folded edge portion 433, thereby facilitating the installation and fixation of the fixing bracket 200.

[0061] Further, the upper end of the first folded edge portion 423 is turned left to form a third folded edge portion 424, and the upper end of the second folded edge portion 433 is turned right to form a fourth folded edge portion 434, thereby preventing the upper ends of the first folded edge portion 423 and the second folded edge portion 433 from rubbing and colliding with the fixing bracket 200. The first folded edge portion 423, the second folded edge portion 433, the third folded edge portion 424, and the fourth folded edge portion 434 can be prefabricated in advance during the production of the roof panel 1.

[0062] In some embodiments, the curled edge portion 230 of the fixing bracket 200 includes a third horizontal section 231 and a fourth vertical section 232 connected in sequence. The left end of the third horizontal section 231 is connected to the upper end of the vertical portion 210, and the upper end of the fourth vertical section is connected to the right end of the third horizontal section. When overlapping with the first locking edge portion 5 and the second locking edge portion 6, the vertical portion 210 of the fixing bracket 200 is in contact with the first vertical section 51 of the first locking edge portion 5 and the second vertical section 61 of the second locking edge portion 6, the third horizontal section 231 is in contact with the first horizontal section 52 of the first locking edge portion 5 and the second horizontal section 62 of the second locking edge portion 6, and the fourth vertical section 232 is in contact with the third vertical section 53 of the first locking edge portion 5.

[0063] Taking the edge locking construction process of the first locking edge portion 5 of the roof panel 1 on the left side and the second locking edge portion 6 of the roof panel 1 on the right side as an example for illustration:

[0064] The first step is to stack the first locking edge portion 5, the curled edge portion 230, and the second locking edge portion 6 in sequence. Specifically, the first vertical section 51, the vertical portion 210, and the second vertical section 61 are stacked from left to right, the first horizontal section 52, the third horizontal section 231, and the second horizontal section 62 are stacked from top to bottom in sequence, and the third vertical section 53 and the fourth vertical section 232 are stacked from right to left in sequence;

[0065] The second step is to fold the third vertical section 53 and the fourth vertical section 232 to the left to form a first insertion slot with the third horizontal section 231, and the first insertion slot is in insertion fit with the second horizontal section 62;

[0066] The third step is to bend the first horizontal section 52, the second horizontal section 62, and the third horizontal section 231 downward to form a second insertion slot with the second vertical section 61, and the second insertion slot is in insertion fit with the third vertical section 53 and the fourth vertical section 232;

[0067] Among them, after forming the curled edge structure, the notch of the first insertion slot faces upward, the notch of the second insertion slot faces downward, and a bite seam 310 of the curled edge structure is formed between the third vertical section 53 and the second vertical section 61.

[0068] The curled edge structure formed through the above edge-locking construction is a double curled edge structure and includes a first curled edge and a second curled edge. Among them, the first curled edge includes a first layer of curled edge, a third layer of curled edge, and a fifth layer of curled edge that are curled inward from the outside and connected in sequence. A first transition section is connected between the first layer of curled edge and the third layer of curled edge, and a third transition section is connected between the third layer of curled edge and the fifth layer of curled edge; the second curled edge includes a second layer of curled edge and a fourth layer of curled edge that are curled inward from the outside and connected in sequence, and a second transition section is connected between the second layer of curled edge and the fourth layer of curled edge; the third layer of curled edge, the fifth layer of curled edge, and the third transition section form a first insertion slot that is inserted and matched with the fourth layer of curled edge, and the second layer of curled edge, the fourth layer of curled edge, and the second transition section form a second insertion slot that is inserted and matched with the fifth layer of curled edge. A bite seam 310 is formed between the fifth layer of curled edge and the second layer of curled edge.

[0069] Actually, after the first step of the edge-locking construction, the first vertical section 51 and the vertical portion 210 form the first layer of curled edge, and the second vertical section 61 forms the second layer of curled edge; after the second step of the edge-locking construction, the third vertical section 53 and the fourth vertical section 232 form the fifth layer of curled edge and the third transition section; after the third step of the edge-locking construction, the first horizontal section 52 and the third horizontal section 231 form the third layer of curled edge and the first transition section, and the second horizontal section 62 forms the fourth layer of curled edge and the second transition section.

[0070] Preferably, the waterproof coiled material layers 21 on the two side seam walls of the bite seam 310 are mutually hot-melt welded to form a waterproof sealing structure. The bite seam 310 is sealed through the waterproof sealing structure, so as to prevent excessive water storage on the roof structure of the house from entering the gap between the roof panels 1 through the bite seam 310, thereby enhancing the waterproof property of the roof system 100. Moreover, the connection of the seam wall surface of the bite seam 310 is strengthened through the mutually hot-melt welded waterproof coiled material layers 21, thereby enhancing the strength of the multi-curled edge structure 300, and further enhancing the mutual connection between the multiple roof panels 1.

[0071] Those skilled in the art can understand that a hot-melt sealing strip can also be used to be hot-melt connected with the waterproof coiled material layer 21 to form a waterproof sealing structure, and other structures that can be connected to the waterproof coiled material layer 21 to seal the bite seam 310 also fall within the protection scope of this application.

[0072] In some embodiments, the roof system 100 further includes a sealant disposed in the insertion structure 400, and the sealant is used to seal the insertion gap 410 between the male connection part 42 and the female connection part 43.

[0073] Specifically, before connecting the male plug part and the female plug part, the seal is arranged on the second inclined wall 432. After the plug structure 400 is formed, the seal directly bonds the first inclined wall 422 and the second inclined wall 432, thereby preventing accumulated water from entering the plug structure 400 between the first inclined wall 422 and the second inclined wall 432, and further improving the sealing performance of the roofing system 100. The seal can be a sealing tape, a sealant or other structures with adhesive force and capable of firmly connecting with metal materials.

[0074] In this application, the roofing system 100 is laid on the roof purlin 600 to form a house roofing structure. Among them, the first locking edge part 5 and the second locking edge part 6 of adjacent roof panels 1 are buckled and connected to form a curled edge structure. By locking the surface layer metal plate 22 and the coiled material waterproof layer 21 together, the coiled material waterproof layer 21 seals the structural gap generated after the surface layer metal plate 22 forms a curled edge structure. And the plug structure 400 formed by connecting the male part 42 and the female part 43 is used to tightly connect the bottom metal plate 4, so as to realize the tight connection of adjacent roof panels 1, and further improve the sealing performance at the joint of adjacent roof panels 1, so that the roofing system 100 has better sealing performance.

[0075] In the description of this application, it should be understood that the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of this application, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically defined.

[0076] In this application, unless otherwise clearly specified and limited, the terms "install", "connect", "join", "fix" and other terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection, an electrical connection or communication with each other; it can be directly connected, or indirectly connected through an intermediate medium, and can be the internal communication of two components or the interaction relationship between two components, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0077] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of this application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0078] Although the embodiments of this application have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting this application. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of this application.

Claims

1. A roof panel, characterized in that: include: A surface composite plate (2) comprises a surface metal plate (22) and a rolled waterproof layer (21) compositely formed above the surface metal plate (22), wherein two connecting ends of the surface composite plate (2) are respectively formed with locking portions for locking edges; A bottom metal plate (4) is located below the surface composite plate (2), the bottom metal plate (4) comprising a bottom body portion (41) and a connecting male portion (42) and a connecting female portion (43) respectively arranged at two ends of the bottom body portion (41), the connecting female portion (43) matching the contour of the connecting male portion (42); and, The middle interlayer (3) is arranged between the surface composite plate (2) and the bottom metal plate (4).

2. The roof panel according to claim 1, characterized in that: The connecting male part (42) includes a first horizontal wall (421), and the connecting female part (43) includes a second horizontal wall (431). The first horizontal wall (421) and the second horizontal wall (431) are parallel to each other, and the first horizontal wall (421) is located below the second horizontal wall (431).

3. The roof panel according to claim 2, characterized in that: The first horizontal wall (421) and the bottom main body (41) are arranged in alignment along the up-down direction.

4. The roof panel according to claim 2, characterized in that: The connecting male portion (42) includes a first inclined wall (422), and the first inclined wall (422) connects the bottom main body portion (41) and the first horizontal wall (421). The connecting female portion (43) includes a second inclined wall (432), and the second inclined wall (432) connects the bottom main body portion (41) and the second horizontal wall (431). The first inclined wall (422) and the second inclined wall (432) have the same inclination direction.

5. The roof panel according to claim 2, characterized in that: A first folded edge portion (423) extending upward is formed at the end of the first horizontal wall (421), and a second folded edge portion (433) extending upward is formed at the end of the second horizontal wall (431), and the first folded edge portion (423) and the second folded edge portion (433) are parallel to each other.

6. A roofing system, characterized in that: It comprises a plurality of roof panels (1) according to any one of claims 1 to 5, wherein the locking edge portions of any two adjacent roof panels (1) are used as curling edges to form a curling edge structure that is interlocked and connected; and the connecting male portions (42) and the connecting female portions (43) of any two adjacent roof panels (1) are plug-connected to each other to form a plug-in structure (400).

7. The roofing system according to claim 6, characterized in that: The roofing system (100) further comprises a sealing member arranged in the plug-in structure (400), the sealing member being used for sealing a plug-in gap (410) between the male connection part (42) and the female connection part (43).

8. The roofing system according to claim 6, characterized in that: The roof system (100) further comprises a fixing bracket (200) connected to the roof purlin (600), and two ends of the fixing bracket (200) are respectively connected to the curling structure and the plug-in structure (400).

9. The roofing system according to claim 8, characterized in that: The fixing bracket (200) comprises a bent portion (220) pluggably matched with the plug-in structure (400), and a fastener (500) is provided through the bent portion (220) and the connecting male portion (42), and the fastener (500) extends to be fixedly connected with the roof purlin (600).

10. The roofing system according to claim 6, characterized in that: The curling structure is a multiple curling structure (300), and the bite seam (310) of the multiple curling structure (300) is provided with a waterproof sealing structure.

Images