Frame unit of roof panel, and connection structure and connection method thereof

Abstract

SOLUTION: A connection structure of the frame units of a roof panel is a connection structure of the frame units of the roof panels for engaging and connecting engaging parts provided in the frame units of two or more roof panels, wherein a first frame unit includes, on a connection end edge, a downward engagement protruding piece on an upper edge side and a downward engagement protruding piece on a lower edge side that is formed in a vertical direction and extend in an edge side direction, a second frame unit is provided with, on a connection end edge, an upward engagement protruding piece on an upper edge side and an upward engagement protruding piece on a lower edge side that is formed in a vertical direction and extends in an edge side direction, and the downward engagement protruding piece on the upper edge side of the first frame unit and the upward engagement protruding piece on the upper edge side of the second frame unit are engaged with each other to form an upper engagement part, the downward engagement protruding piece on the lower edge side of the first frame unit and the upward engagement protruding piece on the lower edge side of the second frame unit are engaged with each other to form a lower engaging part.SELECTED DRAWING: Figure 5

Description

[Technical field]

[0001] The present invention relates to a frame unit for roof panels that constitute the roof surface of a building, and in particular to a connection structure and a connection method for a frame unit for roof panels that is preferably used to constitute the roof surface of a skylight, a eaves roof, or a simple roof above an outdoor corridor. [Background technology]

[0002] Patent Document 1 (JP 2018-021435 A) discloses a mold material for forming eaves, roofs, and the like. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2018-021435 A Summary of the Invention [Problem to be solved by the invention]

[0004] However, there are cases where the frame units of roof panels are distorted horizontally, vertically, or three-dimensionally. Even in such cases, it is necessary to ensure that the connections between the frame units are appropriate and that gaps and steps between the frame units are prevented from occurring, thereby improving the waterproofing and appearance of the roof.

[0005] Roof panels are often made by combining roof panels and frame materials. When cutting out the panels and frame materials, assembling the frame materials together, or joining them to the panels, the frame units can become distorted due to precision issues. Such distortion can cause problems such as a decrease in watertightness during rainfall and uneven gaps and steps between the frame units.

[0006] Therefore, an object of the present invention is to simply and effectively suppress the occurrence of problems associated with distortion of the frame unit. [Means for solving the problem]

[0007] In order to solve the above problems, the connection structure of the frame unit of the roof panel according to the first aspect of the present invention is as follows: A structure for connecting frame units of two or more roof panels by engaging engagement portions provided on the frame units of the roof panels, The first frame unit has a connecting end edge including an upper edge downward engaging protrusion and a lower edge downward engaging protrusion formed in the up-down direction and extending in the edge direction, the second frame unit is provided at a connecting edge with an upwardly directed engagement protrusion on an upper edge side and an upwardly directed engagement protrusion on a lower edge side, the upwardly directed engagement protrusion being formed in a vertical direction and extending in an edge direction; a downward engaging protrusion on an upper edge side of the first frame unit and an upward engaging protrusion on an upper edge side of the second frame unit engage with each other to form an upper engaging portion, a downward engaging protrusion on a lower edge side of the first frame unit and an upward engaging protrusion on a lower edge side of the second frame unit engage with each other to form a lower engaging portion; It is characterized by:

[0008] In the connection structure of the frame units of the roof panel of the present invention having such a configuration, the downward engaging protrusions of the first frame unit and the upward engaging protrusions of the second frame unit provided above and below engage with each other to connect the frame units vertically and horizontally. Therefore, even if the frame units are distorted, they fit neatly, ensuring watertightness and preventing aesthetic problems such as uneven gaps and steps between the connecting edges of the units.

[0009] In the connection structure of the frame units of the roof panel of the present invention, it is preferable that the upper engagement portion and the lower engagement portion are configured so that the downward engagement protrusion on the upper edge side of the first frame unit engages with the upward engagement protrusion on the upper edge side of the second frame unit, the other end side relative to the connection edge of the first frame unit rotates downward, and the downward engagement protrusion on the lower edge side of the first frame unit engages with the upward engagement protrusion on the lower edge side of the second frame unit.

[0010] According to the connection structure of the frame unit of the roof panel having such a configuration, the other end side of the first frame unit can be rotated to engage the lower edge side (formation of the lower engaging portion). Therefore, the upper and lower edge sides can be engaged simply and reliably, and the waterproofing of the roof panel can be ensured and aesthetic problems can be suppressed.

[0011] In the connection structure of the frame units of the roof panel of the present invention, it is preferable that one of the first frame unit and the second frame unit has an upper regulating piece protruding toward the connection edge between the upper engagement portion and the lower engagement portion, and the other of the first frame unit and the second frame unit has a lower regulating piece protruding toward the connection edge, and the upper regulating piece abuts against the upper surface of the lower regulating piece to regulate the rotation direction of the first frame unit.

[0012] According to the above-mentioned structure of the frame unit connection of the roof panel of the present invention, the lower restricting piece abuts against the upper restricting piece from below, thereby restricting the relative vertical movement of the adjacent frame units, thereby effectively preventing unintended disengagement of the upper and lower engaging parts.

[0013] In the connection structure of the frame unit of the roof panel of the present invention, it is preferable that between the upper engagement portion and the lower engagement portion, there is provided an interlocking protrusion protruding toward the connection edge side and an interlocking groove opening toward the connection edge side, and that the interlocking protrusion and the interlocking groove interlock to form an interlocking portion.

[0014] In the above-described structure for connecting frame units of a roof panel, the fitting portion functions as a guide in the vertical direction when the engaging portion is formed, so that the frame units can be easily and reliably engaged with each other. In particular, the fitting portion can effectively function as a guide when one of the frame units is rotated to form the engaging portion on the lower edge side.

[0015] In addition, the frame unit of the roof panel according to the second aspect of the present invention is A frame unit for roof panels that connects adjacent frame units of roof panels to form a roof surface, The four sides are surrounded by frame material, The roof panel is provided with a lower engaging projection on an upper edge side and a lower engaging projection on a lower edge side, the lower engaging projection being formed in the vertical direction and extending in the edge direction at a connection edge between the frame unit of the adjacent roof panel and the frame unit; The connecting edge of the adjacent roof panel to the frame unit is provided with an upward engaging protrusion on the upper edge side and an upward engaging protrusion on the lower edge side, which are formed in the vertical direction and extend in the edge direction; It is characterized by:

[0016] According to the frame unit of the roof panel having such a configuration, the frame unit of an adjacent one of the roof panels is connected to the frame unit of the one roof panel by engaging the upward engaging protrusions of the frame unit of the one roof panel from above via the downward engaging protrusions provided at the top and bottom. On the other hand, the frame unit of the adjacent other roof panel is connected to the frame unit of the other roof panel by receiving the downward engaging protrusions of the frame unit of the other roof panel from below via the upward engaging protrusions provided at the top and bottom. Therefore, even if the frame unit is distorted, it fits neatly, ensuring watertightness and suppressing aesthetic defects such as uneven gaps and steps that occur between the connecting edges of the units.

[0017] A method for connecting frame units of a roof panel according to a third aspect of the present invention includes the steps of: A method for connecting two or more roof panel frame units, comprising the steps of: The downward engaging protrusion on the upper edge side of the first frame unit is engaged with the upward engaging protrusion on the upper edge side of the second frame unit; The other end side of the first frame unit relative to the connecting end edge is rotated downward, a downward engaging protrusion on a lower edge side of the first frame unit is engaged with an upward engaging protrusion on a lower edge side of the second frame unit to connect the first frame unit to the upward engaging protrusion on a lower edge side of the second frame unit; It is characterized by:

[0018] According to the method of connecting frame units of a roof panel having such a configuration, the other end of one frame unit can be rotated to engage the lower edge side, thereby easily and reliably engaging the upper and lower edges and accurately correcting water-tightness and aesthetic defects of the frame unit. Effect of the Invention

[0019] According to the present invention, the downward engaging protrusion of the first frame unit and the upward engaging protrusion of the second frame unit engage with each other at the top and bottom, connecting the frame units vertically and horizontally. Therefore, even if the frame units are distorted, they fit neatly, ensuring watertightness and preventing aesthetic problems such as uneven gaps and steps between the connecting edges of the units. [Brief description of the drawings]

[0020] [Figure 1] FIG. 1 is a schematic diagram showing an example of a eaves roof to which a frame unit 10 of a roof panel 1 according to one embodiment of the present invention is applied. [Diagram 2] FIG. 1 is a schematic diagram showing an example of a simplified roof to which a frame unit 10 of a roof panel 1 is applied. [Diagram 3] FIG. 1 is a cross-sectional view showing an outline of a roof panel 1. [Figure 4] 2 is a cross-sectional view showing an outline of a frame material 11 (12, 13), a facing material 14, and a ridge 15 that constitute a roof panel 1. FIG. [Diagram 5] 2 is a cross-sectional view showing a connection structure 20 of a frame unit 10 of a roof panel 1. FIG. [Figure 6] 1A to 1C are schematic diagrams showing a connection process of the frame unit 10. [Figure 7] 3A to 3C are schematic diagrams showing the installation process of the frame unit 10. [Figure 8] FIG. 2 is a diagram showing an example of a state in which frame members 11 (12, 13) are installed. [Figure 9]1 is a diagram showing an example of a state in which a surface material 14 is installed on a frame material 11 (12, 13). [Figure 10] 1 is a diagram showing an example of a state in which the gap between adjacent face materials 14 is covered with a ridge 15. FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0021] Hereinafter, an embodiment of a frame unit for a roof panel and its connection structure and connection method according to the present invention will be described in detail with reference to the drawings. However, the present invention is not limited to what is shown in the drawings. In addition, since the drawings are intended to conceptually explain the present invention, the ratio of size, length, and quantity may be exaggerated or simplified as necessary for easy understanding. In the following description, the same or equivalent parts are given the same reference numerals, and duplicated descriptions may be omitted.

[0022] For convenience in explaining this embodiment, the up-down direction, left-right direction, and depth direction are defined as follows. That is, for example, as shown in Figures 8 to 10, the up-down direction is defined as the direction perpendicular to the upper surface of the panel material 14 (or the thickness direction of the panel material 14). The left-right direction is defined as the connection direction of multiple frame units 10. The left-right direction is sometimes referred to as the lateral direction. The depth direction is defined as the direction perpendicular to the up-down direction and the left-right direction.

[0023] (About roof panels) The roof panel 1 is used to form the roof surface of a building. The roof panel 1 can be used as a roof surface for, for example, a skylight, a eaves roof (see, for example, FIG. 1), a simple roof on an outdoor corridor (see, for example, FIG. 2), etc., but is not limited thereto.

[0024] The roof panel 1 can be constructed by connecting a plurality of frame units 10 in one direction (for example, the left-right direction). In other words, the frame unit 10 can be connected to another adjacent frame unit 10 to form the roof panel 1. The mechanism or structure for connecting adjacent frame units 10 to each other is referred to as a connecting structure 20 herein. Below, the frame unit 10 will be described as a single unit, and then the connection structure 20 for the frame unit 10 will be described in detail.

[0025] (About frame units) The frame unit 10 is a plate-like member, and has, for example, a substantially rectangular shape. The outer edge (for example, four sides) of the frame unit 10 is surrounded by a frame material 11. Among the frame materials 11, frame materials 12 and 13 adjacent to another frame unit 10 (or a side cover 16) are formed with a connection structure 20 (for example, see FIG. 3).

[0026] The frame material 11 may be made of a metal such as aluminum or a synthetic resin. The frame material 11 (including the frame materials 12 and 13) may be attached to a base 9 such as a purlin by a fixing means such as a screw.

[0027] The frame material 12 has a substantially U-shaped cross section (see FIG. 4(B)). That is, the frame material 12 has a recess 12A that opens upward. A protruding piece 141 of the face material 14 is inserted into the recess 12A (see, for example, FIGS. 7(B) and (C)).

[0028] The frame material 12 has engagement protrusions 211, 212 on one outer surface. The engagement protrusions 211, 212 are arranged vertically spaced apart, and are bent downward at their tips to form hooks 211A, 212A. Therefore, the engagement protrusions 211, 212 are referred to herein as the downward engagement protrusion 211 on the upper edge side and the downward engagement protrusion 212 on the lower edge side, respectively. The downward engaging protrusion 211 on the upper edge side and the downward engaging protrusion 212 on the lower edge side extend in the depth direction, but may extend all the way to the depth direction or may be interrupted midway.

[0029] The length in the protruding direction (lateral direction) of the downward engagement protrusion 212 on the lower edge side may be shorter than the length in the protruding direction of the downward engagement protrusion 211 on the upper edge side. Also, the length in the bending direction (downward direction) of the tip of the downward engagement protrusion 212 on the lower edge side may be shorter than the length in the bending direction of the downward engagement protrusion 211 on the upper edge side. This makes it easier to form the engagement parts 21, 22 by rotating the frame unit 10 downward (see, for example, FIG. 6).

[0030] In addition, the frame material 12 may be provided with an upper restricting piece 232 that protrudes outward in the left-right direction between the downward engaging protrusion 211 on the upper edge side and the downward engaging protrusion 212 on the lower edge side. The upper restricting piece 232 can restrict the rotation direction of the (first) frame unit 10 being rotated by abutting against a lower restricting piece 231 of the frame material 13 described later.

[0031] The upper restricting piece 232 can be configured as a fitting groove formed by small pieces 234, 235 arranged parallel to each other, for example. The fitting groove opens outward in the left-right direction, and a lower restricting piece 231 of the frame material 13 described later can be fitted into the fitting groove as a fitting protrusion to form a fitting portion. This not only restricts the rotation direction of the frame unit 10, but also effectively suppresses the vertical movement of the frame unit 10 in a state engaged with the adjacent frame unit 10.

[0032] The small piece 234 of the fitting groove may be bent upward at the tip. The bent portion is rounded, and this portion moves toward the base end side of the lower restricting piece 231 while abutting against the upper surface of the lower restricting piece 231 described later, so that the frame unit 10 can be smoothly rotated. The upper surface of the small piece 235 slopes downward toward the tip, forming a sloping surface that comes into contact with the tip of the lower restricting piece 231 when the frame unit 10 rotates, and guides the lower restricting piece 231 into the fitting recessed groove.

[0033] Next, the frame material 13 has a substantially U-shaped cross section (see FIG. 4(A)). That is, the frame material 13 has a recess 13A that opens upward. A protruding piece 141 of the face material 14 is inserted into the recess 13A.

[0034] The frame material 13 has engagement protrusions 221, 222 on one outer surface. The engagement protrusions 221, 222 are arranged spaced apart vertically to correspond to the engagement protrusions 211, 212 of the frame material 12, and are bent upward at their tips to form hooks 221A, 222A. Therefore, the engagement protrusions 221, 222 are referred to herein as the upward engagement protrusion 221 on the upper edge side and the upward engagement protrusion 222 on the lower edge side, respectively.

[0035] Therefore, the upward engagement protrusion 221 on the upper edge side and the upward engagement protrusion 222 on the lower edge side can engage with the downward engagement protrusion 211 on the upper edge side and the downward engagement protrusion 212 on the lower edge side of the frame material 12 via each other's hook portions 211A, 212A and hook portions 221A, 222A (see, for example, Figures 5 and 6). The upward engaging projection 221 on the upper edge side and the upward engaging projection 222 on the lower edge side extend in the depth direction, but may extend all the way to the depth direction or may be interrupted midway.

[0036] The length in the protruding direction (lateral direction) of the lower edge side upward engagement protrusion 222 may be longer than the length in the protruding direction of the upper edge side upward engagement protrusion 221. Also, the length in the bending direction (upward direction) of the tip of the lower edge side upward engagement protrusion 222 may be shorter than the length in the bending direction of the upper edge side upward engagement protrusion 221. This makes it easier to form the engagement parts 21, 22 by rotating the frame unit 10 (see, for example, FIG. 6).

[0037] In addition, the frame material 13 may be provided with a lower restricting piece 231 that protrudes outward in the left-right direction between the upward engaging protrusion 221 on the upper edge side and the upward engaging protrusion 222 on the lower edge side. The lower restricting piece 231 corresponds to the upper restricting piece 232 of the frame material 12, and the upper restricting piece 232 abuts against the lower restricting piece 231, thereby restricting the rotation direction of the frame unit 10 being rotated.

[0038] Returning to Fig. 3, a surface material 14 is attached to the frame materials 12 and 13. The surface material 14 covers the area formed by the frame material 11. The surface material 14 is, for example, a hollow panel material made of synthetic resin, and may be substantially rectangular in shape.

[0039] The face material 14 may have a protruding piece 141 that protrudes downward from an end side (see, for example, FIG. 4(D)). The protruding piece 141 fits into the recessed parts 12A, 13A of the frame materials 12, 13, thereby suppressing the lateral movement of the face material 14. The protruding piece 141 may be formed along two opposing sides of the face material 14. In this embodiment, the protruding piece 141 is formed across the two sides, but the protruding piece 141 may be interrupted midway.

[0040] Gaps 10A (see, for example, Figure 9) formed between panel members 14 belonging to adjacent frame units 10, or between a frame unit 10 and a side cover 16, may be covered by a ridge 15 to prevent rainwater from entering (see Figure 3). The flange 15 may be made of a metal such as aluminum or a synthetic resin. A sealant such as a packing may be provided between the flange 15 and the face material 14 or the side cover 16. In this embodiment, the ridge 15 is substantially plate-shaped (see FIG. 4(C)).

[0041] (Frame unit connection structure) A detailed description will be given of the connection structure 20 in the above-mentioned frame unit 10. Here, for convenience of explanation, adjacent frame units 10 may be distinguished as a first frame unit 10 and a second frame unit 10.

[0042] The connection structure 20 connects two or more frame units 10 by engaging upper and lower engagement portions 21, 22 provided thereon (see, for example, FIG. 5). Here, the opposing edges of adjacent frame units 10, i.e., the edges where the engagement portions 21, 22 are formed, are referred to as connection edges 25.

[0043] More specifically, in the connection structure 20, the first frame unit 10 (frame unit 10 on the frame material 12 side in the example of FIG. 5) has an upper downward engaging protrusion 211 and a lower downward engaging protrusion 212 on the connection edge 25. Correspondingly, the second frame unit 10 (frame unit 10 on the frame material 13 side in the example of FIG. 5) has an upper upward engaging protrusion 221 and a lower upward engaging protrusion 222 on the connection edge 25. These engaging protrusions 211, 212, 221, 222 have already been described.

[0044] Therefore, the downward engaging protrusion 211 on the upper edge side of the first frame unit 10 and the upward engaging protrusion 221 on the upper edge side of the second frame unit 10 can be engaged to form the upper engaging portion 21. Also, the downward engaging protrusion 212 on the lower edge side of the first frame unit 10 and the upward engaging protrusion 222 on the lower edge side of the second frame unit 10 can be engaged to form the lower engaging portion 22. The first and second frame units 10 are connected together by the engagement of the upper engaging portion 21 and the lower engaging portion 22.

[0045] With the first frame unit 10 tilted at a predetermined angle relative to the second frame unit 10, the downward engagement protrusion 211 on the upper edge side of the first frame unit 10 is hooked onto the upward engagement protrusion 221 on the upper edge side of the second frame unit 10. Then, the first frame unit 10 is rotated relative to the second frame unit 10, and the downward engagement protrusion 212 on the lower edge side of the first frame unit 10 approaches the upward engagement protrusion 222 on the lower edge side of the second frame unit 10, and their tips pass each other. Furthermore, by lowering the first frame unit 10 relative to the second frame unit 10, the downward engagement protrusion 212 on the lower edge side of the first frame unit 10 and the upward engagement protrusion 222 on the lower edge side of the second frame unit 10 engage with each other, and the first frame unit 10 and the second frame unit 10 are connected to each other.

[0046] In addition, the connection structure 20 may include a restricting portion 23 including an upper restricting piece 232 and a lower restricting piece 231 between the upper engaging portion 21 and the lower engaging portion 22 . The upper restricting piece 232 and the lower restricting piece 231 engage or come into contact with each other to form the restricting portion 23, which facilitates connection by rotation of the first and second frame units 10. That is, when the first frame unit 10 rotates relative to the second frame unit 10, the lower restricting piece 231 comes into contact with the upper restricting piece 232 to guide the upper restricting piece 232 to an appropriate position, so that the downward engaging protrusion 212 on the lower edge side of the first frame unit 10 is appropriately guided toward the upward engaging protrusion 222 on the lower edge side of the second frame unit 10 (see FIG. 6). This facilitates the formation of the lower engaging portion 22.

[0047] In particular, when the upper regulating piece 232 is a mating groove, the lower regulating piece 231 fits into the mating groove, thereby smoothing the rotational movement of the first frame unit 10, and thereby making the formation of the lower engagement portion 22 smoother.

[0048] In addition, it is possible to prevent unintended disconnection due to vertical movement of the connected first and second frame units 10. That is, the lower restricting piece 231 abuts against the lower surface of the upper restricting piece 232, restricting upward movement, thereby restricting the vertical movement of the first frame unit 10 relative to the second frame unit 10, thereby preventing unintended disconnection between the upper engaging portion and the lower engaging portion.

[0049] (Assembling roof panels) The assembly procedure for the roof panel 1 will now be described. One frame material 11 (12, 13) is fixed to the base 9 of the main building with screws or the like, and other frame materials 11 are connected to the frame material 11 (FIG. 8). The method of connecting the frame materials 11 to each other will be described in detail later. Additionally, a side cover 16 may be provided on the outer periphery of the frame material 11. Next, the surface materials 14 are placed on top of each frame material 11 (see FIG. 9). The spaces between the face materials 14 are covered with a batten 15, which is then fixed to the frame materials 12, 13 with screws or the like (see FIG. 10).

[0050] A method of connecting a plurality of frame units 10 (frame materials 11) will be described with reference to Figures 6 and 7. However, the plurality of frame units 10 can also be connected by other methods, such as by butting the edges of the frame materials 11 together. Here, a situation will be considered in which a frame material 12 of a first frame unit 10 is to be connected to a frame material 13 of a second frame unit 10 that is fixed to the base 9 of a main building.

[0051] The downward engaging protrusion 211 on the upper edge side of the first frame unit 10 (frame material 12) is engaged with the upward engaging protrusion 221 on the upper edge side of the second frame unit 10 (frame material 13). For example, the tip 211A of the downward engaging protrusion 211 on the upper edge side is hooked onto the tip 221A of the upward engaging protrusion 221 on the upper edge side (see FIG. 6). At this time, the first frame unit 10 is inclined relative to the second frame unit 10.

[0052] Next, the other end side relative to the connection edge 25 of the first frame unit 10 (i.e., the frame material 13 side of the first frame unit 10) is rotated downward. As a result, the downward engaging projection 212 on the lower edge side of the first frame unit 10 (frame material 12) approaches the upward engaging projection 222 on the lower edge side of the second frame unit 10 (frame material 13).

[0053] At this time, the lower regulating piece 231 abuts against the upper regulating piece 232 and guides the upper regulating piece 232 to an appropriate position, thereby smoothing the rotational movement of the first frame unit 10 and guiding the downward engaging protrusion 212 on the lower edge side of the first frame unit 10 (frame material 12) to a position suitable for engagement with the upward engaging protrusion 222 on the lower edge side of the second frame unit 10 (frame material 13) (for example, the engaging protrusion 212 is slightly above the engaging protrusion 222).

[0054] Then, the downward engaging protrusion 212 on the lower edge side of the first frame unit 10 (frame material 12) is engaged with the upward engaging protrusion 222 on the lower edge side of the second frame unit 10 (frame material 13) to connect them. For example, when the first frame unit 10 becomes approximately parallel to the second frame unit 10, the tip 212A of the downward engaging protrusion 212 on the lower edge side of the first frame unit 10 (frame material 12) is located slightly closer to the base of the engaging protrusion 222 than the tip 222A of the upward engaging protrusion 222 on the lower edge side of the second frame unit 10 (frame material 13). In this state, the first frame unit 10 becomes approximately flush with the second frame unit 10 by its own weight or by pressing the first frame unit 10 from above, and the downward engaging protrusion 212 on the lower edge side engages with the upward engaging protrusion 222 on the lower edge side. This forms the lower engaging portion 22. At this time, the downward engaging projection 211 on the upper edge side meshes with the upward engaging projection 221 on the upper edge side, forming the upper engaging portion 21. This connects the first frame unit 10 to the second frame unit 10.

[0055] The first frame unit 10 and the second frame unit 10, which are connected to each other, are restricted in their relative vertical movement with respect to each other by the restricting portion 23, thereby preventing unintentional disconnection of the first frame unit 10 and the second frame unit 10.

[0056] Although typical embodiments of the present invention have been described above, the present invention is not limited to these, and various design modifications are possible. It goes without saying that such modified versions (variations) of the design are also included in the technical scope of the present invention.

[0057] For example, in this embodiment, the downward engaging projection 211 on the upper edge side and the downward engaging projection 212 on the lower edge side are provided on the frame material 12, and the upward engaging projection 221 on the upper edge side and the upward engaging projection 222 on the lower edge side are provided on the frame material 13. Conversely, the downward engaging projection 211 on the upper edge side and the downward engaging projection 212 on the lower edge side may be provided on the frame material 13, and the upward engaging projection 221 on the upper edge side and the upward engaging projection 222 on the lower edge side may be provided on the frame material 12.

[0058] In the present embodiment, the lower restricting piece 231 is provided on the frame material 13, and the upper restricting piece 232 is provided on the frame material 12. Conversely, the lower restricting piece 231 may be provided on the frame material 12, and the upper restricting piece 232 may be provided on the frame material 13. [Explanation of symbols]

[0059] 1 Roof panels 10 Frame Unit 11~13 Frame material 14 Surface material 20 Connection structure 21 Upper engagement part 211 Downward engagement protrusion on upper edge 212 Downward engagement protrusion on lower edge 22 Lower engagement part 221 Upward engagement protrusion on upper edge 222 Upward engagement protrusion on lower edge 23 Regulatory Department 231 Lower regulation piece 232 Upper regulation piece 25 Connecting edge

Claims

1. A structure for connecting frame units of two or more roof panels by engaging engagement portions provided on the frame units of the roof panels, The first frame unit is provided at a connecting end edge with a downward engagement protrusion on an upper edge side and a downward engagement protrusion on a lower edge side, the downward engagement protrusion being formed in the up-down direction and extending in an edge direction, the second frame unit is provided at a connecting edge with an upwardly directed engagement protrusion on an upper edge side and an upwardly directed engagement protrusion on a lower edge side, the upwardly directed engagement protrusion being formed in a vertical direction and extending in an edge direction; a downward engaging protrusion on an upper edge side of the first frame unit and an upward engaging protrusion on an upper edge side of the second frame unit engage with each other to form an upper engaging portion, a downward engaging protrusion on a lower edge side of the first frame unit and an upward engaging protrusion on a lower edge side of the second frame unit engage with each other to form a lower engaging portion; A connection structure for frame units of roof panels, comprising:

2. The upper engagement portion and the lower engagement portion are a downward engagement protrusion on an upper edge side of the first frame unit engages with an upward engagement protrusion on an upper edge side of the second frame unit, The other end side of the first frame unit relative to the connecting end edge rotates downward, A downward engaging protrusion on the lower edge side of the first frame unit engages with an upward engaging protrusion on the lower edge side of the second frame unit.

2. The connection structure of claim 1, wherein said connecting member is configured as follows:

3. one of the first frame unit and the second frame unit includes an upper regulating piece between the upper engaging portion and the lower engaging portion, the upper regulating piece protruding toward a connection edge side, the other of the first frame unit and the second frame unit includes a lower limiting piece protruding toward a connection end edge side, the upper regulating piece abuts against an upper surface of the lower regulating piece to regulate the rotation direction of the first frame unit; 3. A connection structure for a frame unit of a roof panel according to claim 2.

4. a fitting protrusion protruding toward the connection edge side and a fitting groove opening toward the connection edge side are provided between the upper engaging portion and the lower engaging portion, The fitting protrusion and the fitting groove are fitted together to form a fitting portion; 3. A connection structure for a frame unit of a roof panel according to claim 1 or 2.

5. A frame unit for roof panels that connects adjacent frame units of roof panels to form a roof surface, The four sides are surrounded by frame material, The roof panel is provided with a lower engaging projection on an upper edge side and a lower engaging projection on a lower edge side, the lower engaging projection being formed in the vertical direction and extending in the edge direction at a connection edge between the frame unit of the adjacent roof panel and the frame unit; The connecting edge of the adjacent roof panel to the frame unit is provided with an upward engaging protrusion on the upper edge side and an upward engaging protrusion on the lower edge side, which are formed in the vertical direction and extend in the edge direction; A frame unit for roof panels characterized by:

6. A method for connecting two or more roof panel frame units, comprising the steps of: The downward engaging protrusion on the upper edge side of the first frame unit is engaged with the upward engaging protrusion on the upper edge side of the second frame unit; The other end side of the first frame unit relative to the connecting end edge is rotated downward, a downward engaging protrusion on a lower edge side of the first frame unit is engaged with an upward engaging protrusion on a lower edge side of the second frame unit to connect the first frame unit to the upward engaging protrusion on a lower edge side of the second frame unit; A method for connecting frame units of roof panels, comprising:

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