Roof panel assembly and roof panel system comprising same

Abstract

A roof panel assembly and a roof panel system comprising same. The roof panel assembly comprises: a metal roof panel (10), wherein the metal roof panel (10) comprises a first part (11) and second parts (12) located on two sides of the first part (11), the first part (11) being configured in a flat plate shape, each of the second parts (12) comprising a connection portion (121) and an extension portion (122), one end of the connection portion (121) being connected to one end of the first part (11), the other end of the connection portion (121) being connected to the extension portion (122), and the connection portion (122) being obliquely arranged relative to the first part (11); and the metal roof panel (10) further comprises a first engagement portion (13) and a second engagement portion (14), the first engagement portion (13) being arranged at the end of one extension portion (122) away from the first part (11), the second engagement portion (14) being arranged at the end of the other extension portion (122) away from the first part (11), and the first engagement portion (13) being adapted to the second engagement portion (14), such that two roof panel assemblies are connected to each other in an engaging manner by means of the first engagement portion (13) and the second engagement portion (14).

Description

Roof panel assembly and roof panel system thereof

[0001] This disclosure claims priority to Chinese patent application number CN2023112698988 filed on September 28, 2023. Technical Field

[0002] The present disclosure relates to the field of building technology, and in particular to a roof panel assembly and a roof panel system thereof. Background Art

[0003] The color-coated steel sheets of metal roof panels are subject to long-term corrosion from external paint and plastic spraying, which can cause them to peel. This not only affects the aesthetics and corrosion resistance of the metal roof panels, but also requires repainting and re-plastic spraying after about two years, resulting in high maintenance costs. Repairs to metal roof panels cannot completely eliminate leaks, and repeated maintenance can affect indoor production and daily life.

[0004] In related technologies, metal roof panels need to be fixed to the supports through mechanical interlocking, and the fixed supports need to be fixed by fasteners through drilling holes. This not only damages the waterproof membrane, but also has a large number of fixing holes. In the event of a leak, it is very troublesome to find the leak point, and the subsequent maintenance cost is extremely high.

[0005] Summary of the Invention

[0006] The embodiments of the present disclosure provide a roof panel assembly and a roof panel system thereof to solve or alleviate one or more technical problems in the prior art.

[0007] As a first aspect of an embodiment of the present disclosure, an embodiment of the present disclosure provides a roof panel assembly, including a metal roof panel, including a first part and a second part located on both sides of the first part, the first part is arranged in a flat plate shape, the second part includes a connecting part and an extension part, one end of the connecting part is connected to one end of the first part, and the other end of the connecting part is connected to the extension part, and the connecting part is arranged obliquely relative to the first part; the metal roof panel also includes a first snap-fit ​​part and a second snap-fit ​​part, the first snap-fit ​​part is arranged at one end of the extension part away from the first part, and the second snap-fit ​​part is arranged at another end of the extension part away from the first part, the first snap-fit ​​part and the second snap-fit ​​part are adapted to allow the two roof panel assemblies to be snap-fitted and connected through the first snap-fit ​​part and the second snap-fit ​​part.

[0008] In some possible implementations, the roof panel assembly further includes a first waterproof membrane layer, the metal roof panel includes a first surface and a second surface that are oppositely disposed, and the first waterproof membrane layer is located on the first surface.

[0009] In some possible implementations, the thickness of the first waterproof membrane layer is 0.2 mm-1.8 mm.

[0010] In some possible implementations, the first waterproof membrane layer is bonded to the first surface through a first adhesive structural layer, the first adhesive structural layer includes a metal layer and a first adhesive layer and a second adhesive layer located on opposite sides of the metal layer, the first adhesive layer is bonded to the first waterproof membrane layer, and the second adhesive layer is bonded to the metal roof panel.

[0011] In some possible implementations, the first waterproof roll layer includes a first waterproof portion, a second waterproof portion, and a third waterproof portion, the first waterproof portion covers the surface of the first part, the second waterproof portion covers the surface of the connecting portion, and the third waterproof portion is located on the surface of the extending portion and is arranged at a certain distance from the first buckling portion or the second buckling portion.

[0012] In some possible implementations, the metal roof panel and the first waterproof membrane layer are combined by welding or bonding.

[0013] In some possible implementations, the material of the first waterproof membrane layer includes thermoplastic polyolefin waterproof membrane and / or polyvinyl chloride waterproof membrane.

[0014] In some possible implementations, the connecting portion includes a first inclined portion and a second inclined portion, one end of the first inclined portion is connected to one end of the first part, the other end of the first inclined portion is connected to the second inclined portion, and the other end of the second inclined portion is connected to the extension portion, and the inclination angle of the first inclined portion relative to the first part is smaller than the inclination angle of the second inclined portion relative to the first part.

[0015] In some possible implementations, along the thickness direction of the metal roof panel, a distance greater than 0 is present between the first portion and the extension portion, and projections of the first portion and the extension portion on the same horizontal plane do not overlap.

[0016] In some possible implementations, the first snap-fitting portion includes a first vertical side, a second vertical side, and a third vertical side, one end of the first vertical side is connected to the end of the extension portion, the second vertical side is bent 180° relative to the first vertical side, the third vertical side is bent 180° relative to the second vertical side, and a circular slot is formed between the first vertical side, the second vertical side, and the third vertical side, the second snap-fitting portion includes a fourth vertical side and a fifth vertical side, one end of the fourth vertical side is connected to the extension portion, the fifth vertical side is bent 180° relative to the fourth vertical side, and the fourth and fifth vertical sides are fixed in place with the circular slot.

[0017] As a second aspect of an embodiment of the present disclosure, an embodiment of the present disclosure provides a roof panel system, comprising at least two roof panel assemblies according to any embodiment of the present disclosure, wherein adjacent roof panel assemblies are connected by a first snap-fit ​​portion and a second snap-fit ​​portion.

[0018] In some possible implementations, the roof panel system further includes a buckle cover structure, which includes a buckle cover body. The buckle cover body is wrapped and fitted on the buckle fitting portion of the adjacent roof panel assembly, and the buckle cover body is at least partially fitted on the connecting portion.

[0019] In some possible implementations, the snap-on cover structure further includes a second waterproof membrane layer, the snap-on cover body includes a first side and a second side arranged opposite to each other, the first side is bonded to the metal roof panel, and the second waterproof membrane layer is bonded to the second side through a second adhesive structure layer.

[0020] In some possible implementations, the buckle cover body includes a top plate, two side plates located on both sides of the top plate, and a raised portion protruding from the middle of the top plate, one end of the raised portion passes through the top plate, wherein the top plate and the two side plates form a first cover body, and the raised portion forms a second cover body.

[0021] In some possible implementations, the material of the buckle cover body is the same as that of the metal roof panel, and the thickness of the buckle cover body is greater than the thickness of the metal roof panel.

[0022] The technical solution of the embodiment of the present disclosure can achieve the following beneficial effects: in this roof panel assembly, the two roof panel assemblies can be fastened and connected through the first fastening part and the second fastening part, without the need for fasteners to punch holes for connection, and will not damage the waterproof performance of the roof panel assembly. Moreover, the roof panel assemblies have good tightness after being combined, thereby improving the wind-resistant ability of the roof panel assembly and strengthening the overlap rigidity and waterproof functionality of the roof panel assembly.

[0023] The above summary is for illustrative purposes only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments and features described above, further aspects, embodiments and features of the present disclosure will be readily apparent by reference to the accompanying drawings and the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In the accompanying drawings, unless otherwise specified, the same reference numerals throughout the multiple drawings represent the same or similar components or elements. These drawings are not necessarily drawn to scale. It should be understood that these drawings only depict some embodiments according to the present disclosure and should not be regarded as limiting the scope of the present disclosure.

[0025] FIG1 is a schematic structural diagram of a roof panel system according to an embodiment of the present disclosure;

[0026] FIG2 is an enlarged schematic diagram of the fastening portion of two roof panel assemblies according to an embodiment of the present disclosure;

[0027] FIG3 is a schematic structural diagram of a roof panel assembly according to an embodiment of the present disclosure;

[0028] FIG4 is a schematic diagram of the buckle cover structure of an embodiment of the present disclosure.

[0029] Explanation of the accompanying drawings: 100, roof panel assembly; 200, buckle cover structure; 10, metal roof panel; 20, first waterproof membrane layer; 11, first part; 12, second part; 13, first buckle portion; 14, second buckle portion; 121, connecting portion; 122, extension portion; 1211, first inclined portion; 1212, second inclined portion; 131, first vertical side; 132, second vertical side; 133, third vertical side; 141, fourth vertical side; 142, fifth vertical side; 21, first waterproof portion; 22, second waterproof portion; 23, third waterproof portion; 201, buckle cover body; 2011, top plate; 2012, side plate; 2013, raised portion; 202, second waterproof membrane layer. DETAILED DESCRIPTION

[0030] Hereinafter, only certain exemplary embodiments are briefly described. As will be appreciated by those skilled in the art, the described embodiments may be modified in various ways without departing from the spirit or scope of the present disclosure. Therefore, the drawings and description are to be considered as illustrative in nature and not restrictive.

[0031] With the advancement and development of science and technology, waterproof membranes are widely used in the construction industry. In the metal roofing industry, because metal roofing panels are not 100% waterproof, it is very difficult to identify the leaking point when a metal roofing panel leaks. An additional layer of waterproof membrane is required as a drainage measure after the leak. Because metal roofing panels need to be fixed to fixed supports, the fixed supports require drilling holes in the waterproof membrane. For example, in a conventional public building, tens of thousands or even hundreds of thousands of nailing locations are required, resulting in high installation costs. Traditional color-coated steel roofing panels, due to the paint and plastic spraying on the surface, will peel off over time, affecting the corrosion resistance of the roof panels. Local corrosion will penetrate, affecting indoor production and life, and increasing maintenance costs.

[0032] In order to solve the problems of high maintenance cost and water leakage of roof panel assemblies in related technologies, the present invention provides a roof panel assembly. The technical solution of the roof panel assembly is described below with reference to the accompanying drawings.

[0033] Figure 1 is a schematic diagram of the roof panel system structure according to an embodiment of the present disclosure, Figure 2 is an enlarged schematic diagram of the fastening portion of two roof panel assemblies according to an embodiment of the present disclosure, and Figure 3 is a schematic diagram of the roof panel assembly structure according to an embodiment of the present disclosure. Referring to Figures 1 to 3 , an embodiment of the present disclosure provides a roof panel assembly 100, which may include a metal roof panel 10.

[0034] As shown in Figure 3, the metal roofing panel 10 specifically includes a first portion 11 and two second portions 12 located on either side of the first portion 11. The first portion 11 is flat, and the second portion 12 includes a connecting portion 121 and an extending portion 122. One end of the connecting portion 121 is connected to one end of the first portion 11, and the other end of the connecting portion 121 is connected to the extending portion 122. The connecting portion 121 is inclined relative to the first portion 11.

[0035] Due to the arrangement of the connecting portion 121, the extension portion 122 and the first portion have a spacing greater than 0 in the thickness direction of the metal panel, and the first portion 11, the connecting portion 121 and the extension portion 122 are arranged sequentially along the length direction, and their projections on the same horizontal plane do not overlap.

[0036] The metal roofing panel 10 further includes a first snap-fit ​​portion 13 and a second snap-fit ​​portion 14. The first snap-fit ​​portion 13 is disposed at one end of an extension 122 away from the first portion 11, and the second snap-fit ​​portion 14 is disposed at another end of an extension 122 away from the first portion 11. The first snap-fit ​​portion 13 and the second snap-fit ​​portion 14 mate with each other, so that the two roofing panel assemblies 10 are snap-fitted and connected via the first snap-fit ​​portion 13 and the second snap-fit ​​portion 14.

[0037] For example, the first portion 11 is flat and square, and the second portion 12 is disposed on two opposing sides of the first portion 11. The connecting portion 121 is inclined relative to the first portion 11, with the angle between the connecting portion 121 and the first portion 11 being acute. The extension portion 122 is connected to one end of the connecting portion 121 and extends away from the first portion 11, creating a clearance for the second portion 12 relative to the plane of the first portion 11.

[0038] One of the second parts 12 on both sides is provided with a first buckling portion 13, and the other is provided with a second buckling portion 14, so that any two roof panel assemblies 100 can be assembled through the first buckling portion 13 and the second buckling portion 14 as needed, which facilitates the installation of the roof panel assembly 100.

[0039] In the roof panel assembly 100 of the embodiment of the present disclosure, a first snap-fit ​​portion 13 and a second snap-fit ​​portion 14 are provided on both sides of the first portion 11 of the metal roof panel 10. When the metal roof panel 10 is installed, the first snap-fit ​​portion 13 and the second snap-fit ​​portion 14 of the two metal roof panels 10 are snap-fitted and connected, thereby combining the two roof panel assemblies 100 together. No fastener punching connection is required, and the waterproof performance of the roof panel assembly 100 is not damaged. Moreover, the roof panel assembly 100 has good tightness after assembly, thereby improving the wind-resistant ability of the roof panel assembly 100 and strengthening the overlap rigidity and waterproof functionality of the roof panel assembly 100.

[0040] For example, the first part 11, the second part 12, the first buckling portion 13 and the second buckling portion 14 of the metal roof panel 10 are integrally formed, and the second part 12, the first buckling portion 13 and the second buckling portion 14 can be formed by partially bending the two ends of the metal roof panel 10.

[0041] In one embodiment, the metal roof panel 10 can be made of galvanized steel, aluminum-coated steel, galvanized steel, zinc alloy steel, aluminum, or stainless steel. The metal roof panel 10 includes a base layer and a protective layer. For example, the protective layer can be a galvanized layer, an aluminum-coated layer, or an oxide layer on the surface of an aluminum or stainless steel plate. The protective layer effectively protects the metal base layer, thereby enhancing the corrosion resistance of the metal roof panel 10.

[0042] In one embodiment, the roof panel assembly 100 further includes a first waterproof membrane layer 20. The metal roof panel 10 includes a first surface (the upper surface in the figure) and a second surface (the lower surface in the figure) disposed opposite each other. The first waterproof membrane layer 20 is located on the first surface. The second surface can be bonded to the roof, and the first waterproof membrane layer 20 can be bonded or welded to the first surface, thereby providing a waterproof function on the upper surface of the roof panel assembly 100.

[0043] When the roof panel assembly 100 is installed, since the first waterproof membrane layer 20 is arranged on the first surface of the metal roof panel 10, nailing and fixing will not damage the waterproof membrane, and the roof panel assembly 100 has no water leakage risk, ensuring waterproof requirements.

[0044] Exemplarily, the first waterproof membrane layer 20 may be made of thermoplastic polyolefin waterproof membranes and polyvinyl chloride waterproof membranes. The first waterproof membrane layer 20 may be formed by polymerizing ethylene propylene rubber and polypropylene to form a thermoplastic polyolefin synthetic resin base, with antioxidants and anti-aging agents added. The waterproof membrane may also be reinforced with polyester fiber mesh.

[0045] In the disclosed embodiment, the first waterproof membrane layer 20 of the roof panel assembly 100 utilizes a thermoplastic polyolefin waterproof membrane, which has a service life exceeding 30 years. The first waterproof membrane layer 20 exhibits strong environmental adaptability, high seam peel strength, excellent aging resistance, superior chemical corrosion resistance, good plasticity, and is energy-efficient and environmentally friendly. The first waterproof membrane 20 also exhibits excellent puncture resistance. Combining the first waterproof membrane 20 with the metal roof panel 10 to form a fused tile system effectively addresses the rust and aging issues of traditional metal color-coated steel roof panels, preventing the loss of waterproof functionality due to rust and aging.

[0046] It should be noted that the first waterproof membrane layer 20 may include, but is not limited to, a thermoplastic polyolefin waterproof membrane or a polyester fiber reinforced polyvinyl chloride membrane. The present disclosure does not limit the specific material of the first waterproof membrane layer and can be set according to actual design and use requirements.

[0047] In one embodiment, the thickness of the first waterproof roll layer 20 is 0.2 mm to 1.8 mm. For example, the first waterproof roll layer 20 can be 0.2 mm, 0.3 mm, 0.4 mm, 0.5 mm, 0.6 mm, 0.7 mm, 0.8 mm, 0.9 mm, 1.0 mm, 1.1 mm, 1.2 mm, 1.3 mm, 1.4 mm, 1.5 mm, 1.6 mm, 1.7 mm, or 1.8 mm. If the thickness of the first waterproof roll layer 20 is less than 0.2 mm, it is easily damaged and cracked, resulting in a decrease in waterproof performance. If the thickness of the first waterproof roll layer 20 is greater than 1.8 mm, it may result in a waste of costs. Therefore, in the disclosed embodiment, the thickness of the first waterproof roll layer 20 is set to 0.2 mm to 1.8 mm. This reasonable thickness of the first waterproof roll layer 20 can ensure the waterproof performance of the first waterproof roll layer 20, thereby effectively protecting the metal roofing panel and ensuring cost reduction.

[0048] For example, in the embodiment of the present disclosure, the thickness of the first waterproof membrane layer 20 may be 1.5 mm, but is not limited thereto.

[0049] For example, the thickness of the metal roofing panel 10 can be 0.4 mm to 0.8 mm. The metal roofing panel 10 is welded or bonded to the first waterproof membrane layer 20 and then formed by a press process. For example, the thickness of the metal roofing panel 10 can be 0.4 mm, 0.6 mm, or 0.8 mm, but the thickness of the metal roofing panel 10 is not limited to this.

[0050] In a specific embodiment, the metal roof panel 10 may be a 0.6 mm thick stainless steel metal plate.

[0051] For example, the width of the metal roofing panel 10 is greater than the width of the first waterproof membrane layer 20. After the first waterproof membrane layer 20 is attached to the metal roofing panel 10, a portion of the outer periphery of the metal roofing panel 10 is not covered by the first waterproof membrane layer 20. For example, the width of the metal roofing panel 10 may be 600 mm, and the yield strength of the metal roofing panel 10 may be greater than or equal to 250 MPa. Of course, the width of the metal roofing panel 10 is not limited to this.

[0052] In one embodiment, the first waterproof membrane layer 20 is bonded to the first surface via a first adhesive structural layer (not shown). The first adhesive structural layer includes a metal layer and a first adhesive layer and a second adhesive layer located on opposite sides of the metal layer. The first adhesive layer is bonded to the first waterproof membrane layer 20, and the second adhesive layer is bonded to the metal roofing panel 10. Because the metal roofing panel 10 and the first waterproof membrane layer 20 are made of different materials, and the first adhesive layer and the second adhesive layer have different materials and adhesive properties, the use of the first adhesive structural layer of this embodiment when bonding the two together ensures a secure bond to the first waterproof membrane layer 20 and facilitates installation of the first waterproof membrane layer 20.

[0053] In one embodiment, the first waterproof membrane layer 20 includes a first waterproof portion 21, a second waterproof portion 22, and a third waterproof portion 23. The first waterproof portion 21 covers the surface of the first portion 11, the second waterproof portion 22 covers the surface of the connecting portion 121, and the third waterproof portion 23 is located on the surface of the extension portion 122 and is spaced a certain distance from the first fastening portion 13 or the second fastening portion 14. In other words, the entire surface of the first portion 11 and the connecting portion 121 is covered with the waterproof membrane, while a portion of the extension portion 122 is covered with the waterproof membrane. This reduces the use of waterproof membrane materials and reduces costs while ensuring waterproof performance requirements.

[0054] In this embodiment, by making the first waterproof part 21 cover the surface of the first part 11, the second waterproof part 22 cover the surface of the connecting part 121, and the third waterproof part 23 cover part of the surface of the extension part 122, the waterproof performance of the first waterproof membrane layer can be guaranteed, the metal roof panel can be effectively protected, and the cost can be reduced.

[0055] In one embodiment, the connecting portion 121 includes a first inclined portion 1211 and a second inclined portion 1212. One end of the first inclined portion 1211 is connected to one end of the first portion 11, and the other end of the first inclined portion 1211 is connected to the second inclined portion 1212. The other end of the second inclined portion 1212 is connected to the extension portion 122. The inclination angle of the first inclined portion 1211 relative to the first portion 11 is smaller than the inclination angle of the second inclined portion 1212 relative to the first portion 11.

[0056] In this embodiment, the connecting portion 121 is set as a first inclined portion 1211 and a second inclined portion 1212, and the inclination angle of the first inclined portion 1211 relative to the first portion 11 is smaller than the inclination angle of the second inclined portion 1212 relative to the first portion 11. In this way, after the two roof panel assemblies are combined, the connecting portions 121 and the extending portions 122 of the two roof panel assemblies form a conical space with a small opening at the upper end and a large opening at the lower end, which is beneficial to improving the firmness of the roof panel assembly 100 after installation.

[0057] In one embodiment, the first fastening portion 13 includes a first vertical side 131, a second vertical side 132, and a third vertical side 133. One end of the first vertical side 131 is connected to the end of the extension portion 122, the second vertical side 132 is bent 180° relative to the first vertical side 131, and the third vertical side 133 is bent 180° relative to the second vertical side 132, forming a circular slot between the first vertical side 131, the second vertical side 132, and the third vertical side 133.

[0058] The first vertical side 131 is perpendicular to the extension portion 122. The second vertical side 132 is bent 180° relative to the first vertical side 131 and connected by an arcuate end. The third vertical side 133 is located between the first and second vertical sides 131, 132. One end of the third vertical side 133 is connected to the second vertical side 132, and the other end of the third vertical side 133 is spaced apart from the arcuate end. The first and third vertical sides 131, 133, and the second and third vertical sides 132, 133 form a circular slot.

[0059] The second fastening portion 14 includes a fourth vertical side 141 and a fifth vertical side 142. One end of the fourth vertical side 141 is connected to the extension portion 122, and the fifth vertical side 142 is bent 180° relative to the fourth vertical side 141. The fourth and fifth vertical sides 141 and 142 are secured in place by a circular slot. The fourth vertical side 141 is aligned with the first vertical side 131, and a portion of the fourth vertical side 141 is located within the slot between the second vertical side 132 and the first vertical side 131. The fifth vertical side 142 is located within the slot between the second vertical side 132 and the third vertical side 133, thereby achieving a 360° fastening between the first and second fastening portions 13 and 14. This provides a high fastening strength and significantly improved wind resistance.

[0060] The fourth vertical side 141 and the fifth vertical side 142 of the second buckling portion 14 can slide along the circular slot to adjust the two roof panel assemblies to be installed in place.

[0061] 1 to 3 , an embodiment of the present disclosure further provides a roof panel system, which includes at least two roof panel assemblies 100 according to any embodiment of the present disclosure. Adjacent roof panel assemblies 100 are connected by a first buckle portion 13 and a second buckle portion 14 .

[0062] The roof panel assemblies 100 of the roof panel system of the embodiment of the present disclosure can be directly fixed by the first snap-fit ​​portion 13 and the second snap-fit ​​portion 14, without the need for fasteners to punch holes for connection, and will not damage the waterproof performance of the roof panel assembly 100. Moreover, the roof panel assembly 100 has good tightness after assembly, thereby improving the wind-resistant ability of the roof panel system and strengthening the overlap rigidity and waterproof functionality of the roof panel system.

[0063] 4 , in one embodiment, the roof panel system further includes a buckle cover structure 200 , which includes a buckle cover body 201 . The buckle cover body 201 is wrapped around and fitted on the buckle fitting portion of the adjacent roof panel assembly 100 , and the buckle cover body 201 is at least partially fitted on the connecting portion 121 .

[0064] For example, the cover body 201 includes a top plate 2011, side plates 2012 located on either side of the top plate 2011, and a raised portion 2013 protruding from the center of the top plate 2011. The top plate 2011 and the side plates 2012 form a first cover. One end of the raised portion 2013 extends through the top plate, forming a second cover. After the cover body 201 is installed, the top plate 2011 is aligned with the third waterproof portion, the side plates 1012 are aligned with a portion of the second waterproof portion, and the first cover is snapped onto the extension portion 122 and the connecting portion 121. The raised portion 2013 snaps onto the outside of the first snapping portion 13. Thus, the provision of the cover body 201 protects the snapping portions of the two roof panel assemblies 100.

[0065] For example, the cover body 201 can be formed from a metal sheet, and the material of the cover body 201 is the same as that of the metal roof panel 10. The thickness of the cover body 201 is different from that of the metal roof panel. For example, both the metal roof panel 10 and the cover body 201 can be galvanized steel sheets, with the cover body 201 being 0.8 mm thick and the metal roof panel 10 being 0.6 mm thick.

[0066] The roof panel system of the embodiment of the present disclosure protects the outer side of the roof panel assembly through the first waterproof membrane layer 20, thereby improving the anti-aging ability of the roof panel assembly, and fastens two adjacent roof panel assemblies 100 through the first fastening portion 13 and the second fastening portion 14 without damaging the waterproof performance of the roof panel system. A buckle cover structure is provided at the bite position of the two roof panel assemblies 100 for protection, thereby increasing the service life of the roof panel system.

[0067] In one embodiment, the snap cover structure 200 also includes a second waterproof roll material layer 202, and the snap cover body 201 includes a first side and a second side arranged opposite to each other, the first side is bonded to the metal roof panel 10, and the second waterproof roll material layer 202 is bonded to the second side through a second adhesive structure layer.

[0068] For example, the material of the second waterproof membrane layer 202 is the same as that of the first waterproof membrane layer 20, but the thickness of the second waterproof membrane layer 202 is different from that of the first waterproof membrane layer 20. For example, the first waterproof membrane layer 20 may be a thermoplastic polyolefin waterproof membrane with a thickness of 0.2 mm, and the second waterproof membrane layer 202 may be a thermoplastic polyolefin waterproof membrane with a thickness of 1.8 mm.

[0069] For example, the material of the second waterproof membrane layer 202 may include, but is not limited to, a thermoplastic polyolefin waterproof membrane or a polyester fiber reinforced polyvinyl chloride membrane. The present disclosure does not limit the specific material of the first waterproof membrane layer 20 and can be set according to actual design and use requirements.

[0070] The roof panel assembly and other components of the roof panel system in the above embodiment can adopt various technical solutions known to ordinary technicians in this field now and in the future, and will not be described in detail here.

[0071] In the description of this specification, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present disclosure and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present disclosure.

[0072] 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 being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of such features. Throughout the present disclosure, "plurality" means two or more, unless otherwise specifically defined.

[0073] In this disclosure, unless otherwise expressly specified or limited, terms such as "mounted," "connected," "connect," and "fixed" should be understood broadly. For example, they may refer to fixed connections, detachable connections, or integration; mechanical connections, electrical connections, or communication; direct connections or indirect connections through an intermediate medium; and internal connections between two components or interactions between two components. Those skilled in the art will understand the specific meanings of these terms in this disclosure based on specific circumstances.

[0074] In the present disclosure, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0075] The disclosure above provides many different embodiments or examples for implementing different structures of the present disclosure. In order to simplify the present disclosure, the components and settings of specific examples are described above. Of course, these are merely examples and are not intended to limit the present disclosure. In addition, the present disclosure may repeat reference numbers and / or reference letters in different examples. Such repetition is for the purpose of simplicity and clarity and does not in itself indicate the relationship between the various embodiments and / or settings discussed.

[0076] The above are only specific embodiments of the present disclosure, but the scope of protection of the present disclosure is not limited thereto. Any person skilled in the art can easily conceive of various modifications or substitutions within the technical scope disclosed in this disclosure, and such modifications or substitutions should be included in the scope of protection of the present disclosure. Therefore, the scope of protection of the present disclosure should be based on the scope of protection of the claims.

Claims

1. A roof panel assembly, characterized in that: include: The metal roof panel comprises a first portion and second portions located on both sides of the first portion, wherein the first portion is arranged in a flat plate shape, and the second portion comprises a connecting portion and an extending portion, wherein one end of the connecting portion is connected to one end of the first portion, and the other end of the connecting portion is connected to the extending portion, and the connecting portion is arranged obliquely relative to the first portion; The metal roof panel also includes a first snap-fit ​​portion and a second snap-fit ​​portion, wherein the first snap-fit ​​portion is arranged at one end of the extension portion away from the first part, and the second snap-fit ​​portion is arranged at one end of the other extension portion away from the first part, and the first snap-fit ​​portion and the second snap-fit ​​portion are adapted to each other so that two roof panel assemblies are snap-fitted and connected through the first snap-fit ​​portion and the second snap-fit ​​portion.

2. The roof panel assembly according to claim 1, characterized in that: The roof panel assembly further includes a first waterproofing membrane layer. The metal roof panel includes a first surface and a second surface that are opposite to each other. The first waterproofing membrane layer is located on the first surface.

3. The roof panel assembly according to claim 2, characterized in that: The thickness of the first waterproof coiled material layer is 0.2 mm-1.8 mm.

4. The roof panel assembly according to claim 2, characterized in that: The first waterproof roll material layer is bonded to the first surface via a first bonding structural layer, the first bonding structural layer comprises a metal layer and a first bonding layer and a second bonding layer located on opposite sides of the metal layer, the first bonding layer is bonded to the first waterproof roll material layer, and the second bonding layer is bonded to the metal roofing panel.

5. The roof panel assembly according to claim 2, characterized in that: The first waterproof roll material layer includes a first waterproof part, a second waterproof part and a third waterproof part, the first waterproof part covers the surface of the first part, the second waterproof part covers the surface of the connecting part, and the third waterproof part is located on the surface of the extending part and is arranged at a certain distance from the first buckling part or the second buckling part.

6. The roof panel assembly according to claim 2, characterized in that: The metal roof panel and the first waterproof coiled material layer are combined by welding or bonding.

7. The roof panel assembly according to claim 2, characterized in that: The material of the first waterproof roll material layer includes thermoplastic polyolefin waterproof roll material and / or polyvinyl chloride waterproof roll material.

8. The roof panel assembly according to claim 1, characterized in that: The connecting portion includes a first inclined portion and a second inclined portion, one end of the first inclined portion is connected to one end of the first part, the other end of the first inclined portion is connected to the second inclined portion, and the other end of the second inclined portion is connected to the extending portion, and an inclination angle of the first inclined portion relative to the first part is smaller than an inclination angle of the second inclined portion relative to the first part.

9. The roof panel assembly according to claim 1, characterized in that: Along the thickness direction of the metal roof panel, there is a spacing greater than 0 between the first portion and the extension portion, and the projections of the first portion and the extension portion on the same horizontal plane do not overlap.

10. The roof panel assembly according to claim 1, characterized in that: The first buckling portion includes a first vertical side, a second vertical side and a third vertical side, one end of the first vertical side is connected to the end of the extension portion, the second vertical side is bent 180° relative to the first vertical side, the third vertical side is bent 180° relative to the second vertical side, and a return groove is formed between the first vertical side, the second vertical side and the third vertical side, the second buckling portion includes a fourth vertical side and a fifth vertical side, one end of the fourth vertical side is connected to the extension portion, the fifth vertical side is bent 180° relative to the fourth vertical side, and the fourth vertical side and the fifth vertical side are fixed in cooperation with the return groove.

11. A roof panel system, characterized in that: The invention comprises at least two roof panel assemblies according to any one of claims 1 to 10, wherein adjacent roof panel assemblies are connected via the first buckling portion and the second buckling portion.

12. The roof panel system according to claim 11, characterized in that: The roof panel system also includes a buckle cover structure, which includes a buckle cover body. The buckle cover body is wrapped and fitted on the buckle fitting part of the adjacent roof panel assembly, and the buckle cover body is at least partially fitted on the connecting part.

13. The roof panel system according to claim 12, characterized in that: The buckle cover structure also includes a second waterproof roll material layer, the buckle cover body includes a first side and a second side arranged opposite to each other, the first side is attached to the metal roof panel, and the second waterproof roll material layer is bonded to the second side through a second adhesive structure layer.

14. The roof panel system according to claim 12, characterized in that: The buckle cover body includes a top plate, two side plates located on both sides of the top plate, and a raised portion protruding from the middle of the top plate, one end of the raised portion passing through the top plate, wherein the top plate and the two side plates form a first cover body, and the raised portion forms a second cover body.

15. The roof panel system according to claim 12, characterized in that: The material of the buckle cover body is the same as that of the metal roof panel, and the thickness of the buckle cover body is greater than the thickness of the metal roof panel.

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