Reinforcement, frame member with reinforcement, and folded plate roof structure

Abstract

To provide a reinforcing tool capable of forming a folded plate roof whose heat insulating properties are unlikely to deteriorate. [Solution] The present disclosure relates to a reinforcing element 3 that is arranged in a suspended state below a top plate 21 of a frame member 2 that includes a pair of legs 20 to which a folding plate 1 is attached and a top plate 21 that connects the pair of legs 20. The reinforcing element 3 includes a connecting portion 33 that is fixed to the top plate 21, and a contact portion 30 that is located below the connecting portion 33. The contact portion 30 is formed so that it can move up and down between a state in which it contacts a member 4 located below the reinforcing element 3 and a state in which it is separated from the member 4.

Description

[Technical Field]

[0001] The present disclosure relates to a reinforcement, a frame member with a reinforcement, and a folded-plate roof structure. More specifically, the present disclosure relates to a reinforcement used during installation of a folded plate, a frame member with a reinforcement, and a folded-plate roof structure. [Background technology]

[0002] Patent Document 1 describes a connector that is placed between opposing folded plates of a double folded-plate roof to connect these folded plates. This connector is arranged across the peaks of the lower folded plate and includes a frame member that is locked to a locking portion formed on the side of the peak of the lower folded plate, and a connecting member that connects the frame members arranged on adjacent peaks of the lower folded plate, and the frame member and the connecting member are joined by a fastener.

[0003] Such a connector has the effect of firmly connecting the upper and lower folding plates.

[0004] An example of a folding plate connector is disclosed in Patent Document 1. This folding plate connector includes a support member that is installed between the top surface of a frame member attached to the peak of a lower folding plate and the peak of that peak (see Figure 8 of Patent Document 1). [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Patent No. 5452970 Summary of the Invention [Problem to be solved by the invention]

[0006] However, in Patent Document 1, since the support member is in constant contact with the lower folding plate and the frame member arranged above it, a heat bridge is formed by the support member between the lower folding plate and the frame member, which causes a problem that the thermal insulation is likely to deteriorate.

[0007] The present disclosure aims to provide a reinforcement, a frame member with a reinforcement, and a folded-plate roof structure that can form a folded-plate roof that is less likely to lose its thermal insulation properties. [Means for solving the problem]

[0008] A reinforcing element according to one aspect of the present disclosure is arranged in a state suspended below a top plate of a frame member including a pair of legs to which a folded plate is attached and a top plate connecting the pair of legs. The reinforcing element includes a connecting portion fixed to the top plate and a contact portion located below the connecting portion. The contact portion is formed to be movable up and down between a state in which it is spaced apart from a member located below the reinforcing element and a state in which it is in contact with the member.

[0009] A frame member with a reinforcement according to one aspect of the present disclosure includes a frame member and a reinforcement. The frame member includes a pair of legs to which folded plates are attached, and a top plate connecting the pair of legs. The reinforcement includes a connecting portion fixed to the top plate and a contact portion located below the connecting portion, and is disposed in a suspended state below the top plate. The contact portion is formed to be movable up and down between a state in which it is spaced apart from a member located below the reinforcement and a state in which it is in contact with the member.

[0010] A folded-plate roof structure according to one aspect of the present disclosure comprises a folded plate, a frame member, and a reinforcing element. The folded plate comprises a valley portion and a pair of peak halves protruding on both sides of the valley portion. The frame member comprises a pair of legs to which the peak halves of the folded plate are attached, and a top plate portion connecting the pair of legs. The reinforcing element comprises a connecting portion fixed to the top plate portion and a contact portion located below the connecting portion, and is arranged in a suspended state below the top plate portion. The contact portion is formed to be movable up and down between a state in which it is spaced apart from a member located below the reinforcing element and a state in which it is in contact with the member. [Effects of the Invention]

[0011] The present disclosure has the advantage of being able to form a folded-plate roof whose thermal insulation properties are less likely to deteriorate. [Brief explanation of the drawings]

[0012] [Figure 1] FIG. 1 is a cross-sectional view showing an embodiment (first embodiment) of the folded-plate roof structure of the present disclosure. [Figure 2] FIG. 2 is a perspective view showing a folded plate used in the above embodiment. [Figure 3] FIG. 3 is a perspective view showing a tight frame used in the embodiment of the present invention. [Figure 4] FIG. 4 is a perspective view showing a heat insulating fitting used in the above embodiment. [Figure 5] FIG. 5 is a perspective view showing a frame member with a reinforcement tool used in the above embodiment. [Figure 6] FIG. 6 is a front view showing a reinforcing member used in the embodiment. [Figure 7] FIG. 7 is a rear view showing a reinforcing member used in the embodiment. [Figure 8] FIG. 8 is a side view showing a reinforcing member used in the embodiment. [Figure 9] FIG. 9 is a plan view showing a reinforcing member used in the embodiment. [Figure 10] FIG. 10 is a perspective view showing a part of a frame member with a reinforcement tool used in the above embodiment. [Figure 11] FIG. 11 is a perspective view showing a part of a frame member with a reinforcement tool used in the above embodiment. [Figure 12] FIG. 12 is a perspective view showing a part of a frame member with a reinforcement tool used in the above embodiment. [Figure 13] FIG. 13 is a cross-sectional view showing an embodiment (embodiment 2) of the folded-plate roof structure of the present disclosure. [Figure 14] FIG. 14 is a cross-sectional view showing an embodiment (third embodiment) of the folded-plate roof structure of the present disclosure. [Figure 15]FIG. 15 is a cross-sectional view showing an embodiment (fourth embodiment) of the folded-plate roof structure of the present disclosure. [Figure 16] FIG. 16 is a cross-sectional view showing an embodiment (embodiment 5) of the folded-plate roof structure of the present disclosure. DETAILED DESCRIPTION OF THE INVENTION

[0013] Embodiments of the present disclosure will be described with reference to the drawings. Note that the following embodiments are merely a portion of various embodiments of the present disclosure. Furthermore, the following embodiments can be modified in various ways depending on the design, etc., as long as the object of the present disclosure can be achieved. The drawings referred to below are schematic diagrams, and the dimensional ratios of the components in the drawings do not necessarily reflect the actual dimensional ratios. Arrows indicating directions in the drawings are merely shown to make the explanation easier to understand and have no substance.

[0014] (1) Overview As shown in FIG. 1 , the folded-plate roof structure 6 of this embodiment includes a folded plate 1, a frame member 2, and a reinforcing element 3. The folded plate 1 includes a valley portion 10 and a pair of peak halves 11 protruding on both sides of the valley portion 10. The frame member 2 includes a pair of legs 20 to which the peak halves 11 of the folded plate 1 are attached, and a top plate portion 21 connecting the pair of legs 20. The reinforcing element 3 includes a connecting portion 33 fixed to the top plate portion 21 and a contact portion 30 located below the connecting portion 33. The reinforcing element 3 is disposed in a suspended state below the top plate portion 21. The contact portion 30 is formed to be movable up and down between a state in which it is spaced apart from and in contact with a member 4 located below the reinforcing element 3.

[0015] According to this embodiment, when the contact portion 30 moves upward and is separated from the member 4, a heat bridge is unlikely to be formed and the heat insulating properties are unlikely to be reduced. When the contact portion 30 moves downward and is in contact with the member 4, the frame member 2 can be supported and reinforced by the reinforcing tool 3.

[0016] (2)Details (Embodiment 1) 1 shows a folded-plate roof structure 6 of this embodiment. This folded-plate roof structure 6 is a double folded-plate roof structure. That is, the folded-plate roof structure 6 is formed by arranging an upper folded plate 1 and a lower folded plate 7 opposite each other in the vertical direction.

[0017] The folded plate roof structure 6 of this embodiment is formed by including folded plates 1, frame members 2, reinforcing members 3, and the like.

[0018] <Folded plate> As shown in Figure 2, the folded plate 1 is a metal roofing material formed by bending a metal plate such as a painted steel plate, a galvanized steel plate, or a Galvalume steel plate (registered trademark), and is formed long in the front-to-rear direction, which is the slope direction (flow direction) of the roof. The folded plate 1 has a generally U-shaped cross section and is formed with a valley portion 10 and half peaks 11 and 12 that protrude diagonally upward from both side ends (right end and left end) of the valley portion 10. A pair of steps 101 are formed in the valley portion 10 over approximately the entire length of the folded plate 1 in the longitudinal direction by bending.

[0019] One of the mountain half bodies 11 is composed of an oblique side portion 110 that protrudes diagonally upward from one side end of the valley portion 10 outward (opposite the valley portion 10), an apex 111 that protrudes approximately horizontally from the upper end of this oblique side portion 110 outward (opposite the valley portion 10), and an engaging portion 112 that has an approximately inverted U-shaped cross section and protrudes upward from the end of this apex 111.

[0020] The other half-mountain portion 12 has an oblique side portion 120 that protrudes diagonally upward and outward (opposite the valley portion 10) from the other side end of the valley portion 10, an apex portion 121 that protrudes approximately horizontally from the upper end of the oblique side portion 120 toward the outside (opposite the valley portion 10), and an engaging portion 122 that has an approximately inverted L-shaped cross section and protrudes upward from the end of the apex portion 121.

[0021] The oblique side portion 110 of one of the mountain half bodies 11 is provided with locking portions 113 and 114. The locking portions 113 and 114 are formed by bending a part of the oblique side portion 110 in a stepped shape and protruding from the back surface side. One of the locking portions 113 can be formed above the center of the oblique side portion 110 in the vertical direction, and the other locking portion 114 can be formed below the center of the oblique side portion 110 in the vertical direction. The locking portions 113 and 114 can be formed over the entire length of the folded plate 1 in the longitudinal direction.

[0022] In addition, locking portions 123, 124 are also provided on the oblique side portion 120 of the other mountain portion half 12. The locking portions 123, 124 are formed by bending a part of the oblique side portion 120 in a stepped shape and protruding from the back surface side. One locking portion 123 can be formed above the center of the oblique side portion 120 in the vertical direction, and the other locking portion 124 can be formed below the center of the oblique side portion 120 in the vertical direction. The locking portions 123, 124 can be formed over the entire length of the folded plate 1 in the longitudinal direction.

[0023] The lower folding plate 7 can be formed in the same manner as the folding plate 1. That is, the folding plate 1 and the lower folding plate 7 can use common members.

[0024] <Frame members> There are two types of frame members 2: tight frames 2A and insulating fittings 2B. The tight frames 2A are members for fixing the lower folded plate 7 to the roof substrate 60. The insulating fittings 2B are members for fixing the upper folded plate 1 to the tight frames 2A.

[0025] In the following description, the leg portions 20 of the frame member 2 include the leg portions 20A of the tight frame 2A and the leg portions 20B of the insulating fittings 2B. Furthermore, the top plate portions 21 of the frame member 2 include the top plate portions 21A of the tight frame 2A and the top plate portions 21B of the insulating fittings 2B.

[0026] <<Tight frame>> As shown in FIG. 3, the tight frame 2A is a metal member formed by bending a rectangular (strip-shaped) metal plate such as a steel plate, and is formed with a pair of legs 20A and a top plate 21A. The top plate 21A is formed in a rectangular shape in a plan view (viewed from above). The pair of legs 20A are formed to protrude diagonally downward from both side ends (right end and left end) of the top plate 21A toward the outside (opposite the top plate 21A). Therefore, the pair of legs 20A are arranged in a V-shape in a front view (viewed from the front), and the upper ends of the pair of legs 20A are connected by the top plate 21A.

[0027] Each of the pair of legs 20A has two engaging portions 22A, 23A. The engaging portions 22A, 23A are formed to protrude from the surface of the leg 20A and can be formed, for example, by cutting and raising a portion of the leg 20A. One engaging portion 22A can be formed above the center of the leg 20A in the vertical direction, and the other engaging portion 23A can be formed below the center of the leg 20A in the vertical direction.

[0028] The tight frame 2A also has fixing portions 24A. The fixing portions 24A protrude outward (toward the opposite side from the top plate portion 21A) from the lower ends of each of the pair of leg portions 20A. The tight frame 2A has a plurality of mating ridge portions 25A, each formed by a pair of leg portions 20A and the top plate portion 21A. The multiple mating ridge portions 25A are connected in the left-right direction via the fixing portions 24A. The tight frame 2A is formed so as to extend in the direction in which the multiple mating ridge portions 25A are lined up.

[0029] The tight frame 2A also has a fixing hole 210A. The fixing hole 210A is formed to penetrate the top plate portion 21A in the vertical direction. The fixing hole 210A is a hole for fixing the connecting portion 33 of the reinforcing tool 3.

[0030] In this embodiment, the reinforcing member 3 is not fixed to the tight frame 2A, and therefore the fixing hole 210A is not used.

[0031] <<Insulating brackets>> As shown in Figure 4, the insulating fitting 2B is a metal member formed by bending a rectangular (strip-shaped) metal plate such as a steel plate, and is formed with a pair of legs 20B and a top plate 21B. The top plate 21B is rectangular in plan view (seen from above). The pair of legs 20B are formed to protrude diagonally downward from both side ends (right and left ends) of the top plate 21B toward the outside (the side opposite the top plate 21B). Therefore, the pair of legs 20B are arranged in a V-shape when seen from the front (seen from the front), and the upper ends of the pair of legs 20B are connected by the top plate 21B.

[0032] Each of the pair of legs 20B has two engaging portions 22B and 23B. The engaging portions 22B and 23B are formed to protrude from the surface of the leg 20B and can be formed, for example, by cutting and raising a portion of the leg 20B. One engaging portion 22B can be formed above the center of the leg 20B in the vertical direction, and the other engaging portion 23B can be formed below the center of the leg 20B in the vertical direction.

[0033] The insulating fitting 2B also has locking legs 26B. Locking legs 26B are formed to protrude downward from the lower end of each of the pair of legs 20B. A claw-like, roughly L-shaped engagement portion 27B is formed at the bottom of locking leg 26B and protrudes inward (toward the top panel 21B). A heat insulating member 28B is provided on the surface of engagement portion 27B. The heat insulating member 28B is made of an insulating material with lower thermal conductivity than metal, and can be, for example, a molded product or tape made of plastic such as nylon resin or ABS resin, or rubber. The heat insulating member 28B can be attached to engagement portion 27B by any method, such as fitting, bonding, or crimping.

[0034] Furthermore, a connecting piece 29B is provided to protrude from the outer surface of the locking leg portion 26B (the surface opposite to the top plate portion 21B). The connecting piece 29B is formed in a rectangular plate shape in a plan view, and a connecting bolt 290B is attached to the connecting piece 29B, which penetrates in the vertical direction.

[0035] The insulating fitting 2B also has a fixing hole 210B. The fixing hole 210B is formed to pass through the top plate portion 21B in the vertical direction. The fixing hole 210B is a hole for fixing the connecting portion 33 of the reinforcing tool 3.

[0036] <Reinforcement> The reinforcing element 3 is a member for reinforcing the frame member 2. The reinforcing element 3 has a symmetrical shape. The reinforcing element 3 is located between the top plate portion 21 of the frame member 2 and the member 4 provided below the reinforcing element 3, and supports the top plate portion 21 and suppresses deformation of the frame member 2 when a load is applied to the top plate portion 21 from above.

[0037] Figure 5 shows a frame member with reinforcement 5. The frame member with reinforcement 5 of this embodiment is formed by attaching a reinforcement 3 to an insulating metal fitting 2B. In this frame member with reinforcement 5, the reinforcement 3 is attached to the insulating metal fitting 2B before installation.

[0038] 6 to 9 show the reinforcement 3 before it is attached to the insulating metal fitting 2B. The reinforcement 3 comprises a metal reinforcement body 34 and a rubber or elastomer installation part 32. The reinforcement body 34 is formed by bending a metal plate such as a steel plate, and comprises a back panel 31, side panels 35, a front panel 36, and a bottom panel 37. The metal plate forming the reinforcement body 34 preferably has a thickness of 1.6 mm or more. If the thickness is less than this, the reinforcement body 34 will deform significantly due to the load, making it difficult to transmit the load to the tight frame 2A.

[0039] 7, the back panel 31 is formed in a flat plate shape, and has support legs 310 formed at the bottom of both left and right ends. A space is formed between the pair of support legs 310.

[0040] 8, the side panels 35 are formed in a flat plate shape and protrude forward from both left and right ends of the back panel 31. Abutment portions 350 are provided at the upper ends of each of the pair of side panels 35. The pair of abutment portions 350 are each provided near the center of the pair of side panels 35 in the front-rear direction.

[0041] As shown in Fig. 6, the front plate 36 is formed in a flat plate shape and protrudes to the right or left from the front end of each of the pair of side plates 35. The pair of front plates 36 face each other in the left-right direction. The pair of front plates 36 also face the rear plate 31 in the front-rear direction. The lower portions of the pair of front plates 36 are each formed as a support leg 360, and the pair of support legs 360 face the support legs 310 of the rear plate 31 in the front-rear direction.

[0042] 9, the bottom plates 37 are formed to protrude to the right or left from the lower ends of the pair of side plates 35. The pair of bottom plates 37 are formed in a plate shape and are disposed below the left support legs 310, 360 and the right support legs 310, 360, respectively.

[0043] The front and rear ends of the bottom plate 37 are formed as inclined portions 370. Each of the pair of inclined portions 370 is formed to protrude obliquely upward toward the tip (front end or rear end). The inclination angle of each of the pair of inclined portions 370 is approximately 10° with respect to the horizontal, but is not limited to this.

[0044] A cutout 371 is provided in each of the pair of bottom plates 37. The cutout 371 is formed in approximately the center of the bottom plate 37 in the front-to-rear direction. The cutout 371 is formed in an arc shape in a plan view, and is open to the upper surface, lower surface, and inner edge of the bottom plate 37. The cutout 371 is provided to avoid protrusions due to construction marks formed on the lower folded plate 7.

[0045] As shown in FIG. 3, a pair of protrusions 211A is provided on the upper surface of the top plate portion 21A of the tight frame 2A. When the lower folding plate 7 is installed on the tight frame 2A, the pair of protrusions 211A press the top portions 111 and 121, forming a convex installation mark. This installation mark appears when the lower folding plate 7 is installed properly on the tight frame 2A, but is not formed if the installation is poor. Furthermore, this makes it easy to identify the position of the tight frame 2A when installing the insulation fitting 2B. Therefore, the cutout portion 371 accommodates and avoids the convex installation mark that would appear on the top portions 111 and 121 of the lower folding plate 7. The insulation fitting 2B also has a pair of protrusions 211B for forming an installation mark on the top plate portion 21B.

[0046] Furthermore, since the reinforcing device main body 34 is provided with a pair of bottom plates 37, the lower end surfaces of the pair of support legs 310 and the pair of support legs 360 can be prevented from directly hitting the lower folded plate 7, thereby preventing damage to the lower folded plate 7. Furthermore, even if the reinforcing device 3 is slightly misaligned from its predetermined position, the bottom plates 37 act as an auxiliary means to position it above the tight frame 2A, ensuring that the load can be transmitted to the tight frame 2A and making it difficult for the reinforcing device 3 to sink significantly into the lower folded plate 7.

[0047] The reinforcing element 3 has a connecting portion 33. As shown in Fig. 9, the connecting portion 33 is formed integrally with the reinforcing element main body 34. The connecting portion 33 has a fixing plate 330 and a narrow portion 331.

[0048] The fixing plate 330 is formed into a rectangular plate shape in a plan view. The dimension of the fixing plate 330 in the front-rear direction is smaller than the dimension between the rear plate 31 and the front plate 36. The dimension of the fixing plate 330 in the left-right direction is also smaller than the dimension between the pair of side plates 35. The fixing plate 330 is located approximately in the center between the pair of side plates 35, and approximately in the center of the reinforcement device 3 in the front-rear direction.

[0049] The fixed plate 330 has a connecting hole 332. The connecting hole 332 is provided in approximately the center of the fixed plate 330 in a plan view. The connecting hole 332 passes through the fixed plate 330 in the vertical direction. A burring portion 333 that protrudes upward is provided at the opening edge of the connecting hole 332. The burring portion 333 is formed by performing a burring process when forming the connecting hole 332 (see FIGS. 6 and 7).

[0050] Before the reinforcing tool 3 is attached, the fixing hole 210B of the insulating metal fitting 2B is tapered, and the burring portion 333 of the reinforcing tool 3 and the tapered fixing hole 210B are combined and crimped together. This allows the reinforcing tool 3 to be attached to the insulating metal fitting 2B.

[0051] The narrow portion 331 is formed in the shape of a rectangular plate in a plan view. The left-right dimension of the narrow portion 331 is smaller than the left-right dimension of the fixed plate 330. The front end of the narrow portion 331 is connected to approximately the center of the rear end of the fixed plate 330. The rear end of the narrow portion 331 is connected to approximately the center of the upper end of the back plate 31. In other words, the fixed plate 330 is arranged like a cantilever at the narrow portion 331.

[0052] The installation portion 32 is made of the same material as the waterproof packing and has cushioning properties (elasticity). The installation portion 32 is formed in a flat plate shape and is provided over the entire lower surface of the bottom plate 37, as shown in Figures 10 and 12. Since the inclined portions 370 at the front and rear ends of the bottom plate 37 are inclined obliquely upward, the front and rear ends of the installation portion 32 are also inclined obliquely upward. The lower surface of the installation portion 32 forms the contact portion 30 of the reinforcement 3.

[0053] The installation portion 32 can be formed by attaching, for example, a foam rubber packing of about 2 mm, and is provided as a measure against heat bridges and to prevent the lower folding plate 7 from being damaged.

[0054] The shape of the reinforcing member body 34 resembles a C-beam in plan view, and it is a simple shape with maximum size. The space between the pair of side panels 35 of the reinforcing member body 34 can be filled with a heat insulating material such as glass wool.

[0055] <Frame member with reinforcement> The frame member 5 with reinforcement comprises the frame member 2 and the reinforcement 3. The frame member 5 with reinforcement shown in Figure 5 is formed by attaching the reinforcement 3 to the insulation fitting 2B. The reinforcement 3 is attached to the underside of the top plate portion 21B of the insulation fitting 2B. The reinforcement 3 is connected to the top plate portion 21B only at the connecting portion 33. Therefore, the reinforcement 3 is arranged below the top plate portion 21B in a state where it is suspended by the connecting portion 33.

[0056] The reinforcing member 3 and the top plate portion 21B are joined by a crimping portion 50. The crimping portion 50 is a hole formed by crimping the burring portion 333 and the fixing hole 210B. That is, the connecting hole 332 of the fixing plate 330 is burred to form the burring portion 333 that protrudes from the upper surface.

[0057] The upper surface of the fixing plate 330 of the connecting portion 33 is brought into contact with the lower surface of the top plate portion 21B, and at the same time, the burring portion 333 is inserted into the fixing hole 210B. A jig is inserted from above the fixing hole 210B and crimped to join them.

[0058] At this time, the crimped portion 50 is formed in a tapered shape from top to bottom. This joining structure improves the attachment strength between the top plate portion 21B and the reinforcing member 3, ensuring strength that makes it difficult for the reinforcing member to come off even when subjected to movements such as shaking and vibration.

[0059] Furthermore, since the crimping portion 50 does not protrude from the upper surface of the top plate portion 21B, the upper surface of the top plate portion 21B is formed as a flat surface.

[0060] In this embodiment, the insulating metal fitting 2B and the reinforcing element 3 are connected by a narrow portion 331 having a small (thin) width dimension (dimension in the left-right direction), which makes it difficult for the reinforcing element 3 to move in conjunction with the movement of the insulating metal fitting 2B.

[0061] Furthermore, the insulating metal fitting 2B and the reinforcing tool 3 are connected only by the crimping portion 50. The connecting portion 33, which is connected to the crimping portion 50, is located above the rear plate 31, front plate 36, and abutment portion 350 of the reinforcing tool 3, and a gap is provided between the insulating metal fitting 2B and the reinforcing tool 3, making it difficult for the reinforcing tool 3 to move in conjunction with the movement of the insulating metal fitting 2B.

[0062] On the other hand, the reinforcing element 3 must be in contact with the inside of the insulation metal fittings 2B to receive the compressive load (positive pressure load) from above and transmit it to the tight frame 2A. Therefore, the abutment portion 350, rear panel 31, and front panel 36 are in contact with the underside of the top plate portion 21B to transmit the load to the tight frame 2A. That is, the width dimensions of the reinforcing element 3 in the left-right direction and the front-rear direction are optimally set to the maximum size possible for installation on the inside of the left-right direction and the front-rear direction of the top plate portions 21A and 21B of the tight frame 2A and the insulation metal fittings 2B, because these are the areas where the frame strength is strongest. Therefore, in the folded-plate roof structure 6 of this embodiment, the reinforcing element 3 is preferably installed in the same position as the insulation metal fittings 2B and the top plate portions 21B and 21A of the tight frame 2A. In this case, when the back panel 31, front panel 36, and abutment portion 350 of the reinforcing element 3 come into contact with the underside of the top panel portion 21B due to a compressive load from above, the compressive load can be transmitted to the tight frame 2A on the downward extension line of the back panel 31, front panel 36, and side panel 35, so the reinforcing element 3 can be positioned with the greatest strength.

[0063] In this embodiment, the inclined portion 370 is machined to have an angle of approximately 10° (more specifically, between 10° and 15°). This makes it difficult for the bottom plate 37 of the reinforcing member 3 to become tense when the insulating metal fitting 2B tilts in the front-to-rear direction, allowing the insulating metal fitting 2B to move smoothly and tilt in the front-to-rear direction.

[0064] <Folded plate roof structure> As shown in Figure 1, the folded plate roof structure 6 of this embodiment is a double folded plate roof structure and includes a folded plate 1, a tight frame 2A, a lower folded plate 7, and a frame member 5 with reinforcement (reinforcement 3 and heat insulating metal fittings 2B). The folded plate roof structure 6 is formed as follows.

[0065] First, the tight frame 2A is fixed onto the roof substrate 60. At this time, the fixing portion 24A of the tight frame 2A is placed on the roof substrate 60, and the fixing portion 24A is joined to the roof substrate 60 by welding or the like, thereby fixing the tight frame 2A to the roof substrate 60.

[0066] The roof underlayment 60 is a horizontal member arranged almost horizontally, and is at least one member selected from the group consisting of purlins, girders, beams, and rafters. The tight frames 2A can be arranged along the longitudinal direction of the roof underlayment 60, and the tight frames 2A can be provided over almost the entire length of the roof underlayment 60 in the longitudinal direction (the direction perpendicular to the slope of the roof).

[0067] Next, one lower folded plate 7 is erected on a plurality of roof underlayments 60 arranged side by side in the inclination direction of the roof. At this time, the lower folded plate 7 is placed so as to cover from above the tight frame 2A attached to the roof underlayment 60, and the valley portion 10 of the lower folded plate 7 is positioned between adjacent fitting ridge portions 25A of the tight frame 2A, and it is placed on the roof underlayment 60 or on the fixing portion 24A of the tight frame 2A.

[0068] Furthermore, one of the mountain halves 11 of the lower folding plate 7 is connected to one of the adjacent leg portions 20A, and the other mountain halves 12 of the lower folding plate 7 are connected to the other adjacent leg portion 20A. In this case, the upper locking portions 114, 124 provided on the oblique sides 110, 120 are locked to the tip (lower end) of the upper engagement portion 22A provided on the leg portion 20A, and the lower locking portions 113, 123 provided on the oblique sides 110, 120 are locked to the tip (lower end) of the lower engagement portion 23A provided on the leg portion 20A. In this way, the mountain halves 11, 12 on both sides of the lower folding plate 7 are locked and held to the tight frame 2A. Furthermore, the tops 111, 121 of the mountain halves 11, 12 of the lower folding plate 7 are positioned above the top plate portion 21A of the tight frame 2A.

[0069] In this way, the plurality of lower folded plates 7 are sequentially placed on the roof substrate 60. Then, the fitting portions 112 and fitted portions 122 of the lower folded plates 7 adjacent to each other in the left-right direction are seam-fastened (seam-fastened) to form and join the seam-fastened portions 70, thereby laying the lower folded plates 7 adjacent to each other in the left-right direction (the longitudinal direction of the roof substrate 60) while connecting them, thereby forming a lower folded-plate roof in which the peak portions 71 and the valley portions 10 are alternately connected continuously in the left-right direction.

[0070] After arranging the multiple lower folded plates 7 as described above, the frame member 5 with reinforcement is attached. The frame member 5 with reinforcement is provided above the lower folded plate 7, corresponding to the position of the tight frame 2A. To attach the frame member 5 with reinforcement, first, the insulation fittings 2B, with the spacing between the legs 20B elastically widened slightly, are brought close to the peaks 71 of the lower folded-plate roof from above, and the legs 20B are positioned on both sides of the peaks 71. Thereafter, the spacing between the legs 20B is narrowed, so that the engaging portions 27B of the engaging legs 26B engage with the undersides of the engaging portions 113, 123 formed on the sides of the peaks 71.

[0071] At this time, the engaging portion 27B is engaged with the engaging portions 113, 123 via the insulating member 28B, with the insulating member 28B interposed between the engaging portion 27B and the engaging portions 113, 123. This prevents a heat bridge between the insulating fitting 2B and the folded plate 1 and lower folded plate 7 connected to it, preventing a decrease in the thermal insulation properties of the roof. In this way, the insulating fitting 2B can be attached by elastically sandwiching and spanning the peaks 71.

[0072] As described above, the reinforcing member 3 can be placed at the same time as the insulating metal fittings 2B are attached. The reinforcing member 3 is placed above the tops 111, 121 of the lower folded plate 7. Here, the contact portion 30 on the underside of the reinforcing member 3 is not in contact with the tops 111, 121. A gap of 1 to 5 mm is formed between the contact portion 30 and the tops 111, 121 of the lower folded plate 7.

[0073] Furthermore, the reinforcing member 3 is arranged so that the pair of support legs 310 and the pair of support legs 360 straddle the seam fastening portion 70 in the left-right direction. That is, the seam fastening portion 70 is arranged between the pair of support legs 310 and between the pair of support legs 360. Here, a slanted portion 362 at an angle of approximately 45° is formed in the front plate 36, and the left-right dimension of the support leg 360 below the slanted portion 362 is reduced. This allows the front plate 36 to fully withstand the compressive load from above, while preventing the support legs 360 from coming into contact with the seam fastening portion 70.

[0074] In FIG. 1, the seam fastening portion 70 protrudes to the left, but even if the seam fastening portion 70 protrudes to the right and faces the opposite direction, the seam fastening portion 70 can be positioned between the pair of support legs 310, 360.

[0075] A plurality of frame members 5 with reinforcement can be arranged in a row along the longitudinal direction of one peak 71. In this case, the frame members 5 with reinforcement can be arranged at intervals the same as the intervals between the tight frames 2A (for example, the intervals between the purlins). Adjacent frame members 5 with reinforcement in a direction perpendicular to the longitudinal direction of the peak 71 are connected by connecting members 75 at their insulating fittings 2B. In this case, the left and right ends of the connecting members 75 are connected to connecting pieces 29B by connecting bolts 290B.

[0076] After the frame member 5 with reinforcements has been arranged as described above, the folded plate 1 is installed. First, one folded plate 1 is placed above the lower folded plate 7. At this time, the folded plate 1 is placed so as to cover from above the insulation fittings 2B attached to the lower folded plate 7, and the valley portions 10 of the folded plate 1 are positioned above the joint members 75 between adjacent insulation fittings 2B in the left-right direction. Furthermore, one peak half 11 of the folded plate 1 is connected to the adjacent insulation fitting 2B, and the other peak half 12 of the folded plate 1 is connected to the other adjacent insulation fitting 2B. In this case, the upper locking portions 114, 124 provided on the oblique sides 110, 120 are locked onto the tips (lower ends) of the upper engaging portions 22B provided on the leg portions 20B of the insulation fitting 2B, and the lower locking portions 113, 123 provided on the oblique sides 110, 120 are locked onto the tips (lower ends) of the lower engaging portions 23B provided on the leg portions 20B. In this way, the peak halves 11, 12 on both sides of the folded plate 1 are locked and held by the insulation fitting 2B. In addition, the apexes 111, 121 of the peak halves 11, 12 of the folded plate 1 are positioned above the top plate portion 21A of the insulation fitting 2B.

[0077] In this way, multiple folded plates 1 are sequentially placed on the lower folded plate roof. Then, the fitting portions 112 and fitted portions 122 of adjacent folded plates 1 in the left-right direction are seam-fastened (seam-fastened) to form seam-fastened portions 130 and joined together, thereby laying adjacent folded plates 1 in the left-right direction (the longitudinal direction of the roof substrate 60) while connecting them, and an upper folded plate roof can be formed in which peaks 131 and valleys 10 are alternately connected continuously in the left-right direction.

[0078] In addition, the space between the upper folding plate 1 and the lower folding plate 7 can be filled with a heat insulating material 133 such as rock wool to improve the heat insulating properties.

[0079] In the folded plate roof structure 6 of this embodiment, the contact portion 30 of the reinforcement 3 is formed so as to be movable up and down between a state in which it is spaced apart from and a state in which it is in contact with the member 4 located below the reinforcement 3. In other words, the contact portion 30 is formed so as to be movable up and down between a state in which it is spaced apart from and a state in which it is in contact with the tops 111, 121 of the lower folded plate 7, which is the member 4 located below the reinforcement 3.

[0080] In the folded plate roof structure 6 of this embodiment, under normal conditions (when no load is applied from above to the upper folded plate 1), the contact portion 30 of the reinforcement 3 is spaced apart from the tops 111, 121 of the lower folded plate 7, which is the member 4 located below the reinforcement 3.

[0081] On the other hand, when a load is applied from above to the upper folded plate 1 due to snow accumulation or the like, the insulation fittings 2B deform and the reinforcing members 3 move downward (downward), and as a result, the contact portions 30 also move downward. This downward movement causes the contact portions 30 to come into contact with the tops 111, 121 of the lower folded plate 7. The load applied from above to the upper folded plate 1 is then transmitted to the insulation fittings 2B, the reinforcing members 3, the lower folded plate 7, and the tight frame 2A. Therefore, in the folded-plate roof structure 6 of this embodiment, the insulation fittings 2B, the reinforcing members 3, and the tight frame 2A can support the upper folded plate 1 against a load applied from above.

[0082] Furthermore, when the accumulated snow melts and the load from above on the upper folded plate 1 is eliminated, the insulating metal fittings 2B deform and the reinforcing members 3 move upward (upward), and accordingly, the contact portions 30 also move upward. This upward movement causes the contact portions 30 to separate from the apexes 111, 121 of the lower folded plate 7. When the contact portions 30 are separated from the lower folded plate 7, the upper folded plate 1 thermally expands and contracts in the front-to-rear direction (longitudinal direction), and therefore, even if the insulating metal fittings 2B move so as to tilt in the front-to-rear direction, the contact portions 30 are less likely to come into contact with the lower folded plate 7, and noise can be reduced.

[0083] (Embodiment 2) As shown in FIG. 13, a folded-plate roof structure 6A according to this embodiment differs from the folded-plate roof structure 6 according to the first embodiment in the configuration in which a reinforcing member 3A is provided.

[0084] Hereinafter, the same components as those in the first embodiment will be denoted by the same reference numerals and the description thereof will be omitted as appropriate. The components described in the second embodiment can be applied in appropriate combination with the components described in the first embodiment.

[0085] In the folded-plate roof structure 6A of this embodiment, a reinforcing member 3A is provided on the tight frame 2A to which the lower folded plate 7 is attached. That is, a frame member 5A with a reinforcing member is used instead of the tight frame 2A of embodiment 1. The other configurations are the same as those of embodiment 1.

[0086] The frame member 5A with reinforcement has a reinforcement 3A attached to a tight frame 2A. The reinforcement 3A is formed so that the vertical dimension of the reinforcement body 34 is longer than the reinforcement body 34 of the reinforcement 3 of the first embodiment.

[0087] The reinforcing element 3A is attached to the top plate portion 21A of the tight frame 2A by a connecting portion 33. That is, a crimping portion 50 is formed by a connecting hole 332 of the connecting portion 33 of the reinforcing element 3A and a fixing hole 210A of the top plate portion 21A, and the fixing plate 330 of the connecting portion 33 is fixed to the underside of the top plate portion 21A.

[0088] The reinforcing element 3A is attached in a suspended state to the underside of the top panel portion 21A of the tight frame 2A. The contact portion 30 of the reinforcing element 3A is formed so as to be movable up and down between a state in which it is spaced apart from the roof substrate 60, which is the member 4 located below the reinforcing element 3A, and a state in which it is in contact with the roof substrate 60.

[0089] In the folded plate roof structure 6A of this embodiment, under normal conditions (when no load is applied from above to the lower folded plate 7), the contact portion 30 of the reinforcing element 3A is spaced apart from the roof underlayment 60, which is the component 4 located below the reinforcing element 3.

[0090] On the other hand, when a load is applied from above to the lower folded plate 7 due to snow accumulation or the like, the tight frame 2A deforms and the reinforcing element 3A moves downward (downward), and as a result, the contact portion 30 of the reinforcing element 3A also moves downward. This downward movement causes the contact portion 30 to come into contact with the roof substrate 60. The load applied from above to the lower folded plate 7 is then transmitted to the roof substrate 60 by the reinforcing element 3A. Therefore, in the folded-plate roof structure 6A of this embodiment, the tight frame 2A can be supported by the reinforcing element 3A.

[0091] Furthermore, when the snow melts from its accumulated state and the load from above on the lower folded plate 7 is no longer present, the tight frame 2A deforms and the reinforcing element 3A moves upward (moves upward), and as a result, the contact portion 30 also moves upward. This upward movement causes the contact portion 30 to move away from the roof underlayment 60. When the contact portion 30 is separated from the roof underlayment 60, the lower folded plate 7 thermally expands and contracts in the front-to-back direction (longitudinal direction), and as a result, even if the tight frame 2A moves so as to tilt in the front-to-back direction, the contact portion 30 is less likely to come into contact with the roof underlayment 60, which makes it possible to reduce noise such as friction.

[0092] (Embodiment 3) As shown in FIG. 14, a folded-plate roof structure 6B according to this embodiment differs from the folded-plate roof structures 6, 6A according to the first or second embodiment in the configuration of the single-fold folded-plate roof.

[0093] Hereinafter, the same components as those in the first or second embodiment will be denoted by the same reference numerals and will not be described. The components described in the third embodiment can be applied in appropriate combination with the components described in the first or second embodiment.

[0094] The folded plate roof structure 6B of this embodiment is a single folded plate roof in which the folded plate 1, the frame member 5 with reinforcement, and the heat insulating material 133 are removed from the double folded plate roof of embodiment 2. In addition, instead of the lower folded plate 7 of embodiment 2, a folded plate 1 of the same form is used and attached to the tight frame 2A. A backing material 136 is provided on the underside of the folded plate 1. The other configurations are the same as those of embodiments 1 and 2.

[0095] (Embodiment 4) As shown in Fig. 15, the folded-plate roof structure 6C according to this embodiment differs from the folded-plate roof structures 6 and 6A according to embodiments 1 and 2 in the configuration of the single-folded-plate roof. The folded-plate roof structure 6C according to this embodiment also differs from the folded-plate roof structures 6, 6A, and 6B according to embodiments 1 to 3 in the configuration in which the folded plate 1 and the tight frame 2A are joined by retaining clips 135.

[0096] Hereinafter, the same components as those in the first to third embodiments will be denoted by the same reference numerals and will not be described. The components described in the fourth embodiment can be applied in appropriate combination with the components described in the first to third embodiments.

[0097] In the folded plate roof structure 6C of this embodiment, a normal folded plate without the locking portions 113, 114, 123, and 124 is used as the folded plate 1. The tight frame 2A also uses a normal tight frame without the engaging portions 22A and 23A. Adjacent folded plates 1 in the left-right direction are joined by retaining clips 135.

[0098] (Embodiment 5) As shown in FIG. 16, a folded-plate roof structure 6D according to this embodiment differs from the folded-plate roof structure 6 according to the first embodiment in the configurations of the lower folded plates 7 and tight frames 2A.

[0099] Hereinafter, the same components as those in the first embodiment will be denoted by the same reference numerals and the description thereof will be omitted as appropriate. The components described in the fifth embodiment can be applied in appropriate combination with the components described in the first embodiment.

[0100] In the folded plate roof structure 6D of this embodiment, a normal folded plate without the locking portions 113, 114, 123, and 124 is used as the lower folded plate 7. The tight frame 2A also uses a normal tight frame without the engaging portions 22A and 23A. Adjacent folded plates 1 in the left-right direction are joined by retaining clips 135.

[0101] (3) Summary As described above, the first aspect is a reinforcing element (3) that is arranged in a suspended state below the top plate (21) of a frame member (2) that includes a pair of legs (20) and a top plate (21) that connects the pair of legs (20). The reinforcing element (3) includes a connecting portion (33) that is fixed to the top plate (21) and a contact portion (30) that is located below the connecting portion (33). The contact portion (30) is formed so as to be movable up and down between a state in which it is spaced apart from and a state in which it is in contact with a member (4) that is located below the reinforcing element (3).

[0102] According to this embodiment, when the contact portion 30 moves upward and is separated from the member 4, a heat bridge is unlikely to be formed and the heat insulating properties are unlikely to be reduced. Furthermore, when the contact portion 30 moves downward and is in contact with the member 4, the frame member 2 can be supported and reinforced by the reinforcing member 3.

[0103] The second aspect is the reinforcing member (3) according to the first aspect, in which the connecting portion (33) includes a fixed plate (330) and a narrow portion (331) whose dimension in the left-right direction is smaller than that of the fixed plate (330). The fixed plate (330) is fixed to the lower surface of the top plate portions (21), (21). The narrow portion (331) is not fixed to the frame member (2).

[0104] According to this embodiment, the movement of the frame member (2) in the front-rear direction is less likely to be transmitted to the reinforcing member (3), and the frame member (2) can be stably supported.

[0105] The third aspect is the reinforcing member (3) according to the first or second aspect, which has a width dimension smaller than the left-right dimension of the top plate portion (21).

[0106] According to this embodiment, the reinforcing element (3) can be easily accommodated between the pair of legs (20), and the pair of legs (20) are less likely to come into contact with the reinforcing element (3).

[0107] The fourth aspect is the reinforcing member (3) according to any one of the first to third aspects, and has an installation portion (32) that is larger than the front-rear dimension of the top plate portion (21). The contact portion (30) is formed on the lower surface of the installation portion (32).

[0108] According to this embodiment, even if the frame member (2) moves in the front-to-rear direction when the contact portion (30) moves downward and contacts the member (4), the installation portion (32) is long in the front-to-rear direction, so that the frame member (2) can be stably supported.

[0109] The fifth aspect is the reinforcing tool (3) according to the fourth aspect, in which the front end and rear end of the installation portion (32) are inclined obliquely upward.

[0110] According to this embodiment, even if the frame member (2) moves in the front-to-rear direction when the contact portion (30) moves downward and contacts the member (4), the installation portion (32) can tilt in the front-to-rear direction to support the frame member (2), thereby enabling stable support of the frame member (2).

[0111] The sixth aspect is a frame member (5) with a reinforcement, which includes a frame member (2) and a reinforcement (3). The frame member (2) includes a pair of legs (20) to which a folding plate (1) is attached, and a top plate (21) connecting the pair of legs (20). The reinforcement (3) includes a connecting portion (33) fixed to the top plate (21) and a contact portion (30) located below the connecting portion (33), and is disposed in a suspended state below the top plate (21). The contact portion (30) is formed to be movable up and down between a state in which it is spaced apart from and a state in which it is in contact with a member (4) located below the reinforcement (3).

[0112] According to this embodiment, when the contact portion 30 moves upward and is separated from the member 4, a heat bridge is unlikely to be formed and the heat insulating properties are unlikely to be reduced. When the contact portion 30 moves downward and is in contact with the member 4, the frame member 2 can be supported and reinforced by the reinforcing member 3.

[0113] A seventh aspect is a frame member (5) with reinforcement according to the sixth aspect, in which the frame member (2) is composed of at least one of a tight frame (2A) or a heat insulating metal fitting (2B).

[0114] According to this embodiment, when the contact portion (30) moves downward and contacts the member (4), the reinforcing member (3) can support and reinforce the tight frame (2A) or the insulating metal fitting (2B).

[0115] The eighth aspect is a frame member (5) with reinforcement according to the sixth or seventh aspect, which has a crimping portion (50) that fixes the connecting portion (33) and the top plate portion (21) together.

[0116] According to this embodiment, the upper surface of the top plate portion (21) is likely to be flat, making it easier to install the folded plate (1).

[0117] The ninth aspect is a folded-plate roof structure (6) comprising a folded plate (1), a frame member (2), and a reinforcing element (3). The folded plate (1) comprises a valley portion (10) and a pair of peak halves (11) protruding on both sides of the valley portion (10). The frame member (2) comprises a pair of legs (20) to which the peak halves (11) of the folded plate (1) are attached, and a top plate portion (21) connecting the pair of legs (20). The reinforcing element (3) comprises a connecting portion (33) fixed to the top plate portion (21) and a contact portion (30) located below the connecting portion (33), and is disposed in a suspended state below the top plate portion (21). The contact portion (30) is formed to be movable up and down between a state in which it is spaced apart from and a state in which it is in contact with a member (4) located below the reinforcing element (3).

[0118] According to this embodiment, when the contact portion 30 moves upward and is separated from the member 4, a heat bridge is unlikely to be formed and the heat insulating properties are unlikely to be reduced. When the contact portion 30 moves downward and is in contact with the member 4, the frame member 2 can be supported and reinforced by the reinforcing member 3.

[0119] The tenth aspect is a folded plate roof structure (6) according to the ninth aspect, wherein the member (4) located below the reinforcing member (3) is at least one selected from the group consisting of a purlin, a girder, a beam, and a rafter.

[0120] According to this embodiment, when the contact portion (30) moves upward and is separated from the beams, purlins, and rafters, heat bridges are less likely to form and thermal insulation is less likely to deteriorate. When the contact portion (30) moves downward and is in contact with the beams, purlins, and rafters, the frame member (2) can be supported and reinforced by the reinforcing element (3).

[0121] The eleventh aspect is a folded plate roof structure (6) according to the ninth or tenth aspect, in which the member (4) located below the reinforcing member (3) is a lower folded plate (7) installed below the folded plate (1).

[0122] According to this embodiment, when the contact portion 30 moves upward and is separated from the lower folding plate 7, a heat bridge is unlikely to be formed and the thermal insulation is unlikely to be reduced. When the contact portion 30 moves downward and is in contact with the lower folding plate 7, the frame member 2 can be supported and reinforced by the reinforcing member 3. [Explanation of symbols]

[0123] 1. Folded plate 2 Frame members 3 Reinforcement 4. Components 5 Frame members with reinforcement 6 Folded plate roof structure 7 Lower folding plate 10 Valley 11 Mountain Half Body 20 Legs 21 Top plate 30 Contact area 32 Installation part 33 Connecting part 330 Fixed plate 331 Narrow width section 50 Crimping part

Claims

1. A reinforcing tool arranged in a suspended state below a top plate portion of a frame member comprising a pair of legs to which a folded plate is attached and a top plate portion connecting the pair of legs, a connecting portion fixed to the top plate portion and a contact portion located below the connecting portion, The contact portion is formed to be movable up and down between a state in which it is spaced from a member located below the reinforcing tool and a state in which it is in contact with the member. Reinforcement.

2. The connecting portion includes a fixed plate and a narrow portion having a dimension smaller in the left-right direction than the fixed plate, The fixing plate is fixed to the lower surface of the top plate portion, The narrow portion is not fixed to the frame member. The reinforcement device according to claim 1 .

3. The width dimension is smaller than the left-right dimension of the top plate portion. The reinforcement device according to claim 1 .

4. an installation portion that is larger than the dimension of the top plate portion in the front-rear direction; The contact portion is formed on the lower surface of the installation portion. The reinforcement device according to claim 1 .

5. The front end and rear end of the installation portion are inclined obliquely upward. The reinforcement according to claim 4.

6. A frame member with a reinforcement, comprising a frame member and a reinforcement, The frame member includes a pair of legs to which the folded plate is attached and a top plate portion connecting the pair of legs, the reinforcing member includes a connecting portion fixed to the top plate portion and a contact portion located below the connecting portion, and is disposed in a suspended state below the top plate portion; The contact portion is formed to be movable up and down between a state in which it is spaced from a member located below the reinforcing tool and a state in which it is in contact with the member. Frame members with reinforcements.

7. The frame member is composed of at least one of a tight frame or an insulating metal fitting.

7. The frame member with reinforcements according to claim 6.

8. A crimping portion is provided to fix the connecting portion and the top plate portion.

7. The frame member with reinforcements according to claim 6.

9. A folded plate roof structure comprising a folded plate, a frame member, and a reinforcing member, The folded plate includes a valley portion and a pair of peak halves protruding on both sides of the valley portion, The frame member includes a pair of legs to which the mountain portion halves of the folded plate are attached, and a top plate portion connecting the pair of legs, the reinforcing member includes a connecting portion fixed to the top plate portion and a contact portion located below the connecting portion, and is disposed in a suspended state below the top plate portion; The contact portion is formed to be movable up and down between a state in which it is spaced from a member located below the reinforcing tool and a state in which it is in contact with the member. Folded plate roof structure.

10. The member located below the reinforcement is at least one selected from the group consisting of a purlin, a girder, a beam, and a rafter. The folded plate roof structure according to claim 9.

11. The member located below the reinforcing tool is a lower folded plate installed below the folded plate, The folded plate roof structure according to claim 9.

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