Roof structure

Abstract

To provide a roof structure having excellent workability and capable of securing initial waterproof performance over a long period, by suppressing occurrence of water immersion between a panel and an eaves trough.SOLUTION: A roof structure 100 has a panel 11 and a trough member 30 provided along the edge part of the lower side in the slope direction of the panel 11. The roof structure 100 has a trough support part provided between the panel 11 and the trough member 30 and fixing a side wall part 33a to the edge part of the panel 11, and a belt-like draining member 60 covering a gap between the panel 11 and the trough member 30 from above and arranged along the longitudinal direction of the trough member 30. One end part of the draining member 60 in the width direction orthogonal to the longitudinal direction is fixed to the panel 11 at a part higher than a trough support part, the other end part in the width direction is suspended and arranged in the trough straddling the upper end of the side wall part 33a, and is elastically deformable from a shielding attitude covering the trough support part from above to an exposing attitude for exposing the trough support part.SELECTED DRAWING: Figure 3

Description

Technical Field

[0001] The present invention relates to a roof structure.

Background Art

[0002] Roof structures configured using plate-like panels for the roofs of buildings such as building roofs and eaves are widely known. For example, in the roof structure shown in FIG. 17, a gutter member 113 is provided at the end of a panel 111 supported by a column or the wall surface of a building, and the gutter member 113 receives rainwater flowing along the upper surface of the panel 111.

[0003] The panel 111 shown here is composed of a core member 115 such as a honeycomb core and a frame member 117 provided to surround the core member 115, sandwiched between two face plates (upper face plate 119A, lower face plate 119B). Outside the frame member 117, the gutter member 113 is arranged along the longitudinal direction of the frame member 117 (the depth direction in FIG. 17). The gutter member 113 is fixed to the side surface of the frame member 117 by screws 123, and the gap between the upper face plate 119A and the side wall 125 of the gutter member 113 is filled with a sealing material 127 to prevent rainwater from entering downward from the gap.

Prior Art Documents

Non-Patent Documents

[0004]

Non-Patent Document 1

Summary of the Invention

発明が解決しようとする課題

Problems to be Solved by the Invention

[0005] However, in the roof structure described above, installing the sealant 127 in the gap between the top plate 119A of the panel 111 and the gutter member 113 required a significant amount of labor. Furthermore, the sealant 127 is exposed to ultraviolet rays and ambient temperature, making it susceptible to deterioration. If the sealant 127 peels off due to aging or other factors, water will immediately seep in directly below, so countermeasures were necessary.

[0006] Therefore, the present invention aims to provide a roof structure that offers excellent workability, suppresses water infiltration between the panel and the gutter, and ensures initial waterproofing performance over a long period of time. [Means for solving the problem]

[0007] The present invention consists of the following configuration. A roof structure comprising a panel supported at an angle from a horizontal plane, and a gutter member provided along the lower edge of the panel, having a bottom wall and a pair of side walls rising from the bottom wall, with an open top, A gutter support portion is provided between the panel and the gutter member, and fixes one of the pair of side wall portions, which is positioned on the panel side, to the edge of the panel. A strip-shaped water drain member is provided to cover the gap between the panel and the gutter member from above, and is arranged along the longitudinal direction of the gutter member. Equipped with, The drain member has one end in the width direction perpendicular to the longitudinal direction fixed to the panel above the gutter support, and the other end in the width direction is positioned to hang down into the gutter, straddling the upper end of one of the pair of side walls located on the panel side, and is elastically deformable from a shielding position that covers the gutter support from above to an exposed position that exposes the gutter support. Roof structure. [Effects of the Invention]

[0008] According to the present invention, the ease of installation is excellent, and water infiltration between the panel and the gutter is suppressed, ensuring initial waterproofing performance over a long period of time. [Brief explanation of the drawing]

[0009] [Figure 1] Figure 1 is an overall diagram of the roof structure. [Figure 2] Figure 2 is a schematic perspective view of a panel, showing its internal structure with a portion of the panel cut out. [Figure 3] Figure 3 is a cross-sectional view of the panel and gutter member shown in Figure 1, cut along line III-III. [Figure 4] Figure 4 is a partially enlarged view of the vicinity of the upper recess shown in Figure 3. [Figure 5A] Figure 5A is a perspective view of the drainage component. [Figure 5B] Figure 5B is a cross-sectional view of the drainage member shown in Figure 5A, cut along the VV line. [Figure 6] Figure 6 is a process diagram illustrating the state in which the lower projection of the drain member is fitted into the lower recess. [Figure 7] Figure 7 is a partial cross-sectional view showing the upper projection inserted into the upper recess and the two parts fitted together. [Figure 8] Figure 8 is a partial cross-sectional view showing how the gutter member is attached to the panel. [Figure 9] Figure 9 is a schematic perspective view showing the area near the joints between panels of the roof structure. [Figure 10] Figure 10 is a schematic cross-sectional view taken along the line XX shown in Figure 9. [Figure 11] Figure 11 is a cross-sectional view of the main part of the second example of the roof structure configuration. [Figure 12] Figure 12 is a cross-sectional view of the main part of the third example of the roof structure configuration. [Figure 13] Figure 13 is a cross-sectional view of the main part of the fourth configuration example of the roof structure. [Figure 14] Figure 14 is a cross-sectional view of the main part of the fifth example of the roof structure configuration. [Figure 15] Figure 15 is a cross-sectional view of the main part of the sixth example of the roof structure configuration. [Figure 16] Figure 16 is a cross-sectional view of the main part of the seventh example of the roof structure. [Figure 17] FIG. 17 is a cross-sectional view showing the configuration of a conventional roof structure.

Embodiments for Carrying Out the Invention

[0010] Hereinafter, an embodiment of a roof structure according to the present invention will be described in detail with reference to the drawings.

[0011] <First Configuration Example> (Configuration of Roof Structure) FIG. 1 is an overall configuration diagram of a roof structure 100. The roof structure 100 includes a panel member 10, a gutter member 30 fixed to the panel member 10, and one or more (three in FIG. 1) frames 13 that suspend and fix the panel member 10. The panel member 10 is formed by connecting a plurality of (two in the illustrated example) panels 11 with one side of each facing each other. Here, the Y direction is the connection direction of the plurality of panels 11, the Z direction is the height direction of the roof structure 100, and the X direction is a direction orthogonal to the Y direction and the Z direction.

[0012] The frame 13 is made of, for example, a steel material such as H-shaped steel or a material such as an aluminum alloy, and is formed in an inverted L shape having a leg portion 13a and a beam portion 13b extending substantially horizontally from the upper portion of the leg portion 13a. The lower end of each leg portion 13a is fixed by being buried in the ground or the like. Note that the shape of the frame 13 shown in FIG. 1 is an example and is not limited to its shape and the arrangement form of each part.

[0013] The panel member 10 having a plurality of panels 11 is suspended from the beam portion 13b of the frame 13. The suspended panel members 10 are each inclined and arranged such that the height from the horizontal plane (XY plane) gradually increases in the direction (X direction) in which the beam portion 13b extends from the leg portion 13a. Also, adjacent panels 11 are connected at their opposing ends. Further, a long gutter member 30 is fixed to each panel 11 along the edge portion on the lower inclined side. The number of panels 11 constituting the panel member 10 is not limited to two and may be three or more, and the shapes and sizes of the connected panels 11 may be the same or different from each other.

[0014] Figure 2 is a schematic perspective view of panel 11, showing its internal structure with a portion of it cut out. In the following description, identical components or parts will be assigned the same reference numerals to simplify or omit their explanation. The panel 11 comprises a core member 15, a rectangular plate-shaped frame member 17 arranged around the core member 15 in a plan view, and an upper plate 19 and a lower plate 21 that sandwich and fix the core member 15 and the frame member 17 in the thickness direction.

[0015] The core member 15 is equipped with a honeycomb structure as its core material, which consists of aluminum or aluminum alloy walls arranged in a honeycomb pattern. The honeycomb structure of the core member 15 allows the panel 11 to be made lightweight yet highly rigid. Furthermore, because the core member 15 is sandwiched between the top panel 19 and the bottom panel 21, the durability of the panel 11 is improved, resulting in a high-strength, highly durable structure that is resistant to environmental loads such as sunlight and snow.

[0016] The frame member 17 is a frame whose outermost edge is at the same position as the outer edges of the top plate 19 and the bottom plate 21, or inside the outer edges. This frame member 17 is made of rod-shaped bodies such as an extruded product of aluminum or an aluminum alloy, or a solid square bar, and the ends of each rod-shaped body are combined to form a rectangle. Both ends of the core member 15 and the frame member 17 in the Z direction are bonded to the top plate 19 and the bottom plate 21 by adhesive 23 provided between the top plate 19 and the bottom plate 21.

[0017] The top plate 19 and the bottom plate 21 are made of aluminum or aluminum alloy sheet metal, but may also be made of iron sheet metal, stainless steel sheet metal, resin sheet metal, fiber-reinforced resin sheet metal such as CFRP, or sheet metal made by appropriately combining these materials.

[0018] The thickness of the core member 15 is approximately 3 mm to 300 mm. The thickness of the top plate 19 and the bottom plate 21 is 0.2 mm to 3.0 mm, preferably 1.5 mm to 2.5 mm, respectively. Multiple support bolts 25, such as stud bolts, are provided on the side of the top plate 19 that is fixed to the beam portion 13b (see Figure 1). Each support bolt 25 is provided at appropriate intervals according to the size and shape of the frame 13 and fastened to mounting brackets (not shown) provided on the beam portion 13b. In this way, the panel 11 is supported by the beam portion 13b of the frame 13.

[0019] Figure 3 is a cross-sectional view of the panel 11 and the gutter member 30 shown in Figure 1, taken along line III-III. The gutter member 30 is positioned along one side of the rectangular frame member 17 in the panel 11 when viewed from above. The gutter member 30 is a concave member having a bottom wall portion 31 and a pair of side wall portions 33a, 33b rising upward (in the Z direction) from both sides of the bottom wall portion 31 in a cross-section perpendicular to its longitudinal direction. In other words, the top of the bottom wall portion 31 of the gutter member 30 is open.

[0020] One of the pair of side wall portions 33a and 33b, the side wall portion 33a positioned on the panel 11 side, has a gutter connecting portion 35 on its outer surface facing the panel 11 that protrudes toward the panel 11. The gutter connecting portion 35 has a through hole 39 through which a fastening member such as a screw 37 is inserted to connect the gutter member 30 to the frame member 17 of the panel 11.

[0021] Ribs 41a and 41b may be provided near the upper edges of the side walls 33a and 33b of the gutter member 30, projecting inward from each other. Each rib 41a and 41b is formed continuously along the longitudinal direction of the gutter member 30, but can be omitted depending on the size and shape of the gutter member 30. In addition, a rib 41c is provided near the lower edge of the side wall 33a of the gutter member 30, projecting toward the panel 11.

[0022] The frame member 17 has recesses 43a and 43b formed indented toward the panel 11 side near the X-direction ends of the upper panel 19 and the lower panel 21. The internal spaces of the recess 43a on the upper panel 19 side (hereinafter also referred to as the upper recess UC) and the recess 43b on the lower panel 21 side may be filled with a sealant 45. The sealant 45 is gel-like or fluid during application and hardens after application to function as a solid seal. In other words, the space between the upper panel 19 and the frame member 17, and the space between the lower panel 21 and the frame member 17 are sealed watertight with the sealant 45, thereby more reliably preventing moisture from entering between the upper panel 19 and the lower panel 21 and the frame member 17. The sealant 45 may also be configured to fill the recess 43b on its own, or it may be hardened integrally with the water drainage member 60 described later.

[0023] Figure 4 is a partially enlarged view of the vicinity of the upper recess UC shown in Figure 3. The frame member 17 has a stepped portion 47 that faces the top plate 19 and defines an upper recess UC. The stepped portion 47 consists of a first surface portion 49 that forms the bottom surface of the recess UC of the upper recess and a second surface portion 51 that becomes the opposing wall of the top plate 19.

[0024] Furthermore, the frame member 17 has a third surface portion 53 extending downward in Figure 4 from the opening end of the upper recess UC in the second surface portion 51, and a fourth surface portion 55 that protrudes from the third surface portion 53 toward the opposite panel side below the second surface portion 51 and overlaps with the gutter connecting portion 35. An opening hole 57, which will be described in detail later, is formed in the third surface portion 53, and a lower recess LC is defined on the panel 11 side of the opening hole 57. In addition, a screw hole 59 that engages with the screw 37 is formed in the fourth surface portion 55.

[0025] The gutter connecting portion 35 provided on the gutter member 30 is superimposed on the fourth surface portion 55 of the frame member 17 from above. Then, a screw 37 inserted through a through hole 39 formed in the gutter connecting portion 35 is screwed into the screw hole 59, thereby fastening the gutter member 30 and the frame member 17 together. The gutter connecting portion 35, the fourth surface portion 55, and the screw 37 are provided between the panel 11 and the gutter member 30 and function as a gutter support portion that fixes the side wall portion 33a of the gutter member 30 to the edge of the panel 11.

[0026] Furthermore, the rib 41c of the gutter member 30 shown in Figure 3 abuts against a part of the lower plate 21 side of the frame member 17. As a result, the moment acting due to the weight of the gutter member 30 is absorbed by the frame member 17.

[0027] One end of the drain member 60 is fixed to the upper recess UC and the lower recess LC provided in the frame member 17, and is fixed to the panel 11. The drain member 60 is positioned to straddle the upper end of the side wall 33a so as to close the gap between the frame member 17 and the side wall 33a from above.

[0028] Figure 5A is a perspective view of the drain member 60. Figure 5B is a cross-sectional view of the drain member 60 shown in Figure 5A along the VV line. As shown in Figure 5A, the drain member 60 is formed in a strip shape with a uniform cross-sectional shape along its longitudinal direction. The drain member 60 can be made of a flexible and pliable material such as silicone rubber, synthetic rubber, or soft polyvinyl chloride, and is preferably an extruded product that is easy to manufacture.

[0029] As shown in Figure 5B, the cross-sectional shape of the drain member 60 perpendicular to the longitudinal direction is an inverted U shape overall, with an upper projection 63 and a lower projection 65 formed on one end of the thin plate-like piece 61 in the width direction WD. The upper projection 63 is fitted into the upper recess UC shown in Figure 4, and the lower projection 65 is fitted into the lower recess LC which has an opening hole 57 below the upper recess UC. In other words, the upper projection 63 and the upper recess UC, and the lower projection 65 and the lower recess LC each function as a fixing mechanism for fixing the drain member 60 to the panel 11. The upper recess UC and the lower recess LC are formed recessed inward on the side surface of the panel 11. In this way, the drain member 60 is fixed within the gap between the panel 11 and the gutter member 30, and can be installed with high space efficiency without protruding outward.

[0030] The lower projection 65 is formed at the tip of one end of the plate-like piece 61. The upper projection 63 is formed at a distance from the lower projection 65 corresponding to the position of the opening holes 57 of the upper recess UC and the lower recess LC. As shown in Figure 5B, the plate-like piece 61 has a base-side extension 61a extending from the position of the upper projection 63 toward the lower projection 65, and a tip-side extension 61b extending perpendicular to the extension direction of the base-side extension 61a to the tip of the other end. The tip-side extension 61b has a bent portion 61c that bends approximately parallel to the base-side extension 61a at its intermediate position, but the entire tip-side extension 61b may be formed flat if it is made of a material that is easily deformable. A stepped portion 61d is formed at the base of the upper projection 63 of the plate-like piece 61, which abuts against the end surface of the top plate 19 of the panel 11.

[0031] The upper projection 63 has a hollow portion 67 that is continuous in the longitudinal direction of the drain member 60, and the lower projection 65 similarly has a hollow portion 69 that is continuous in the longitudinal direction. This facilitates deformation during fitting. Furthermore, the upper projection 63 has straight grooves 63a and 63b with a trapezoidal cross-section that widen from the inside to the outside of the upper projection 63, which are formed continuously along the longitudinal direction of the drain member 60 on the surface that abuts the inner wall surface of the upper recess UC (upper and lower surfaces in Figure 5B). In other words, the cross-sectional shape of the straight grooves 63a and 63b is trapezoidal, widening from the groove bottom to the groove opening, and the angle between the groove bottom surface and the groove side surface (groove bottom angle) is obtuse. In addition, the upper projection 63 has a chamfered portion 63c formed at the corner of its tip (the tip in the direction of insertion into the upper recess 43a and the opening hole 57). Similarly, the lower projection 65 also has a chamfered portion 65a formed at the corner of the tip in the insertion direction.

[0032] (Installation procedure for drainage components) Next, the procedure for installing the drainage member 60 on the panel 11 and its effects will be explained in order. The following procedure assumes manual work by an operator, but it may also be carried out using appropriate machinery. Figure 6 is a process diagram showing the state in which the lower projection 65 of the drain member 60 is fitted into the lower recess LC. At the lower inclined end of panel 11, the water drain member 60 is attached to panel 11 before the gutter member 30 is attached to panel 11. Specifically, first, the upper recess UC between the top plate 19 and the second surface portion 51 of panel 11 is filled with sealant 45.

[0033] Next, the lower projection 65 of the drainage member 60 is inserted into the opening 57 formed in the third surface portion 53 that is exposed outward in the X direction of the panel 11, and the lower projection 65 is fitted into the lower recess LC. Since the lower projection 65 is hollow, it is easily deformable and can be easily fitted into the lower recess LC through the opening 57. This fitting operation is performed along the Y direction of the panel 11. As a result, the strip-shaped drainage member 60 is temporarily fixed to the panel 11 along its entire length.

[0034] Next, the water drain member 60, which is temporarily fixed to the panel 11, is pushed upward in the direction of arrow P1 in Figure 6, and the upper projection 63 is inserted into the upper recess UC. Figure 7 is a partial cross-sectional view showing the upper projection 63 inserted into the upper recess UC and the two parts fitted together. When the upper projection 63 is pushed into the upper recess UC, the upper projection 63 is inserted into the upper recess UC while elastically deforming due to the hollow portion 67, and the sealing material 45 filled in the upper recess UC flows into the straight grooves 63a and 63b. Then, the end face 19a of the top plate 19 is pushed until it abuts against the stepped portion 60d of the drain member 60, and the upper projection 63 is inserted into the upper recess UC. In this way, the drain member 60 is fitted sequentially along the edge of the panel 11 in the Y direction. In this way, the drain member 60 is fixed to the panel 11 by the sealing material 45 adhering the upper projection 63 to the upper recess UC along the entire length of the drain member 60.

[0035] As described above, when installing the drain member 60 on the panel 11, the worker temporarily fixes the drain member 60 to the lower recess LC of the panel 11, and then pushes the upper projection 63 into the upper recess UC to fix it in place. This procedure allows the worker to easily complete the fitting and bonding work without touching the sealant 45 that has been pre-filled in the upper recess UC. If the drain member 60 and the panel 11 were to be bonded together with the sealant 45 using a single recess and projection, the worker would have to support the drain member 60, remove the sealant 45 overflowing from the recess, and simultaneously insert the projection along the outer edge of the panel 11 and remove the overflowing sealant 45 from the recess. In such a work environment, the overflowing sealant 45 is likely to adhere to the worker's hands, and when the worker touches the panel 11, the sealant 45 on their hands may contaminate the panel 11. As a result, additional work of cleaning various parts of the panel 11 becomes necessary.

[0036] However, by using two upper and lower recesses (upper recess UC, lower recess LC) and protrusions (upper protrusion 63, lower protrusion 65) as in this configuration, and joining the water drain member 60 to the panel 11 in stages, with the lower section for temporary fastening and the upper section for permanent joining, the water drain member 60 can be installed with good workability without imposing a burden on the worker. In addition, when the upper protrusion 63 is inserted into the upper recess UC, any sealant 45 that overflows from the gap between the upper protrusion 63 and the upper recess UC is contained in the straight grooves 63a and 63b, preventing it from overflowing to the base of the upper protrusion 63. Even if the sealant 45 reaches the base of the upper protrusion 63, the flow path of the sealant 45 below the second surface 51 is blocked by the lower protrusion 65. Furthermore, there is a possibility that the sealant 45 may protrude from between the end face 19a of the top plate 19 and the stepped portion 61d of the drain member 60, but even in that case, the only surface that needs to be cleaned is the top surface of the panel 11.

[0037] Then, after a predetermined time, the sealant 45 hardens, and the drain member 60 is firmly fixed to the panel 11.

[0038] The upper projection 63 has obtuse angles on both the inclination of one side wall (groove bottom angle θ1) and the inclination of the other side wall (groove bottom angle θ2) of the straight grooves 63a and 63b. Therefore, compared to the case of dovetail grooves with acute angles, nests are less likely to form in the straight grooves 3a and 63b. As a result, the upper projection 63 and the inner wall surface of the upper recess UC are securely bonded by the sealing material 45. Consequently, the drain member 60 can be securely fixed, and high sealing performance can be ensured.

[0039] Even if the sealing material 45 is not provided, the upper projection 63 is fixed to the upper recess UC by fitting with the upper recess UC, so the drain member 60 can be stably supported.

[0040] Furthermore, it is preferable that the stepped portion 61d of the water drain member 60 and the end face 19a of the top plate 19 abut against each other, so that the upper surfaces of both are at the same height. In this case, the upper surfaces of the top plate 19 and the water drain member 60 are flush with each other, allowing rainwater flowing over the panel 11 to be smoothly transferred to the water drain member 60 and guided into the gutter of the gutter member 30 shown in Figure 3.

[0041] Next, attach the gutter member 30 to the panel 11. Figure 8 is a partial cross-sectional view showing how the gutter member 30 is attached to the panel 11. When the drain member 60 is fixed to the panel 11, the tip extension 61b of the plate-shaped piece 61 on the side away from the panel 11 hangs down. The worker lifts this hanging tip extension 61b in the direction of arrow P2 in Figure 8 and fixes the gutter member 30 to the panel 11 from above. Specifically, the worker lifts the tip extension 61b of the drain member 60 to expose the fourth surface 55 formed on the frame member 17 of the panel 11. Then, the gutter connecting portion 35 of the gutter member 30 is placed on top of the fourth surface 55, the through hole 39 of the gutter connecting portion 35 is aligned with the screw hole 59 of the fourth surface 55, and the gutter connecting portion 35 and the fourth surface 55 are fastened together with a screw 37.

[0042] The fastening of the screw 37 can be performed from above the panel 11 by inserting a tool such as a screwdriver from the direction of arrow AC in Figure 8. After fastening, by lowering the lifted tip extension 61b back to its original position, the gap between the panel 11 and the gutter member 30 is covered from above by the water drain member 60, as shown in Figure 3.

[0043] As described above, one end of the water drain member 60 in the width direction (X direction) perpendicular to its longitudinal direction (Y direction) is fixed to the panel 11 above the gutter support portion (gutter connecting portion 35, fourth surface portion 55). The other end in the width direction (X direction) is positioned to hang down into the gutter, straddling the upper end of the side wall portion 33a. When the state in which the gutter support portion is covered from above (the plate-shaped piece 61 shown by the dashed line in Figure 8) is considered the "shielding position" of the water drain member 60, and the state in which the gutter support portion is exposed (the plate-shaped piece 61 shown by the solid line in Figure 8) is considered the "exposed position" of the water drain member 60, the water drain member 60 is able to undergo elastic deformation from at least the shielding position to the exposed position.

[0044] In this context, "exposed" means that there is nothing obstructing the fourth surface portion 55 or the gutter connecting portion 35 above, and that a tool such as a screwdriver can easily access the positions of the through hole 39 and the screw hole 59. This includes a state in which there is space through the gap between the plate-like piece 61 into which a worker can insert a tool. In other words, "exposed" means a state in which a worker can fasten the screw 37.

[0045] With this roof structure configuration, the gutter member 30 can be attached only from the upper side of the panel 11, eliminating the need for fastening work from the lower side of the panel 11, thus improving workability. In addition, the flashing member 60 ensures that water flowing over the panel 11 is reliably guided into the gutter of the gutter member 30 without leaking between the panel 11 and the gutter member 30. Furthermore, when attaching the gutter member 30 to the panel 11, the gutter connection portion 35 and the four-sided portion 55 can be easily exposed by lifting up the flashing member 60. As a result, the worker can easily perform the fastening work with screws 37 in a comfortable posture, improving the ease of installation of the gutter member 30. Moreover, after installation, the gap between the panel 11 and the gutter member 30 is covered from above by the flashing member 60, reliably preventing water leakage.

[0046] In this configuration, the drain member 60 is provided with an upper projection 63 and a lower projection 65, which are arranged in two stages. However, as will be described later, depending on the longitudinal length of the drain member 60 and the construction conditions, the lower projection 65 may be omitted, and the connection may be made using only the upper projection 63. Alternatively, a configuration combining a two-stage area and a single-stage area may be used. Furthermore, depending on the installation conditions, the lower projection 65 and the lower recess LC may be joined using a sealing material 45, and the upper projection 63 and the upper recess UC may be fitted together for temporary fastening.

[0047] (Drainage from the joints between panels) Figure 9 is a schematic perspective view showing the vicinity of the joints between the panels 11 of the roof structure. Figure 9 is an enlarged view of the PA section in Figure 1. Figure 10 is a schematic cross-sectional view taken along the line XX shown in Figure 9. As shown in Figure 9, a cover member 71 is provided along the joint between the ends of adjacent panels 11 on the upper surface of the panels 11. Below the cover member 71, a semi-cylindrical catch pan 73 is positioned. The catch pan 73 receives rainwater that seeps out from the joint between the panels 11 and drains it from the downward-sloping end as indicated by arrow P3.

[0048] Furthermore, corner covers 75 are provided at the corners between the ends of adjacent panels 11, covering the outside of the drainage member 60. In Figure 9, the drainage member 60 and the corner cover 75 are shown by dashed lines. As shown in Figure 10, rainwater flowing out from the end of the catch pan 73 hits the tip extension 61b of the drainage member 60 and flows down into the gutter below for discharge. In this way, the drainage member 60 is positioned with a gap between it and the side wall 33a of the gutter member 30 on the panel 11 side, so that not only the surface exposed to the outside of the panel 11 but also the surface facing inward from the panel 11 has a secondary drainage guiding effect that directs rainwater to the gutter member 30.

[0049] <Example Configuration 2> Figure 11 is a cross-sectional view of the main part of the second example of the roof structure configuration. The roof structure in this configuration is the same as the first configuration example described above, except that the arrangement of the gutter member 30 and the flashing member 60A is different.

[0050] The gutter member 30 in this configuration does not have a rib 41a (Figure 4) that protrudes from the inside of the gutter on the side wall portion 33a. Therefore, the tip extension portion 61b of the water drain member 60A is in close contact with the inner wall surface of the side wall portion 33a of the gutter member 30.

[0051] According to this, even if the amount of rainwater increases to the point of overflowing from the gutter member 30, the gap between the gutter member 30 and the panel 11 is covered by the tip extension 61b, so the rainwater in the gutter will not penetrate into the panel 11. It is preferable that the tip extension 61b and the side wall 33a are simply in contact, but if necessary, a part or all of them may be joined or bonded to each other.

[0052] <Example 3 configuration> Figure 12 is a cross-sectional view of the main part of the third example of the roof structure configuration. The roof structure in this configuration is the same as the first configuration example described above, except that a return portion 61e is provided at the tip of the tip extension portion 61b of the flashing member 60B.

[0053] The return portion 61e of the water drain member 60B is formed by bending the tip of the tip-side extension portion 61b so that it protrudes toward the panel 11. This return portion 61e prevents splashes of rainwater flowing into the gutter of the gutter member 30 from entering the gap between the gutter member 30 and the panel 11. The protruding length of the return portion 61e can be set to any length within the range until it contacts the side wall portion 33a of the gutter member 30.

[0054] <Example 4> Figure 13 is a cross-sectional view of the main part of the fourth configuration example of the roof structure. In the first configuration example of the flashing member 60 described above, the upper projection 63 and the lower projection 65 were pushed into the upper recess UC and the lower recess LC, which are recessed inward on the side surface of the panel 11, and fitted into these recesses from the side of the panel 11. However, the direction of pushing is not limited to this. In the roof structure of this configuration, a recess opening upward is provided at the end of the panel 11 on the gutter member 30 side, and the flashing member 60C is pushed into this recess from above and fitted into it.

[0055] In this case, the drain member 60C has a plate-shaped piece 61 and a projection 81 provided on the plate-shaped piece 61. The plate-shaped piece 61 has a base-end extension 83 extending from the projection 81 toward the panel 11 and a tip-end extension 85 extending from the projection 81 toward the gutter member 30. In addition, a sealant 45 may be filled into the recess 43a between the upper plate 19 and the stepped portion 47 of the frame member 17. The gutter member 30 is positioned with a predetermined gap between it and the side wall portion 33a on the panel 11 side, and the gutter connecting portion 35 and the fourth surface portion 55 are fastened together by screws 37.

[0056] In this case, the gutter member 30 is fixed to the end of the panel 11 by fastening screws 37, and then the projection 81 of the water drain member 60C is inserted into the vertical recess VC, which is the gap between the end of the panel 11 and the side wall portion 33a of the gutter member 30. The projection 81 has a hollow portion 87 and is easily deformable, so when inserted into the vertical recess VC, it elastically deforms and fits snugly against the inner wall surface of the vertical recess VC without any gaps.

[0057] In this configuration, the assembly procedure involves fastening the panel 11 and the gutter member 30 with screws 37, and then fitting the projection 81 of the water drain member 60C into the vertical recess VC. As mentioned above, the water drain member 60 is made of an elastic material, so by pulling the projection 81 upward from the vertical recess VC as shown in Figure 13, the water drain member 60C can be easily detached from the panel 11.

[0058] In other words, the water drain member 60C is positioned so that its tip extension 85 straddles the upper end of the side wall 33a and hangs down into the gutter. The water drain member 60C can then be removed from the vertical recess VC by lifting the tip extension 85 upward from its shielding position, which covers the gutter connection 35 and the fourth surface 55 from above.

[0059] As described above, by detaching the water drain member 60 from the vertical recess VC, access to the screw 37 becomes possible, allowing various maintenance tasks to be performed. Furthermore, since the vertical recess VC is formed with an upward opening at the end of the panel 11 on the gutter member 30 side, the water drain member 60C can be easily inserted from above the vertical recess VC, and the fitting of the projection 81 and the vertical recess VC can be performed with good workability.

[0060] Furthermore, since the base end extension 83 of the plate-shaped piece 61 of the water drain member 60C is positioned to cover the top plate 19, rainwater flowing on the panel 11 is guided along the top surface of the water drain member 60C into the gutter of the gutter member 30. As a result, rainwater does not enter between the panel 11 and the gutter member 30.

[0061] Furthermore, if a sealing material 45 is provided, and the sealing material 45 filled in the recess 43a has not yet hardened when the projection 81 is fitted, the sealing material 45 can adhere and fix the projection 81 to the vertical recess VC.

[0062] <Example 5> Figure 14 is a cross-sectional view of the main part of the fifth example of the roof structure configuration. In this configuration, another panel 11A is provided on the opposite side of the gutter member 30 from the panel 11 side in the first configuration example. The additional panel 11A is positioned at an angle so that the gutter member 30 is on the downward slope side, and rainwater flowing on the upper surface of the panel 11A is directed onto the gutter member 30.

[0063] In this case, the panel 11A and the gutter member 30 are not mechanically fastened together; they are only connected by the water drain member 60 on the panel 11A side hanging down into the gutter from above the side wall portion 33b of the gutter member 30. Therefore, even if the panel 11 and panel 11A are supported separately and move relative to each other due to wind, rain, snow, etc., they can move with each other, so large localized stresses do not occur. Thus, a configuration with excellent durability against external forces can be achieved.

[0064] <Example 6> Figure 15 is a cross-sectional view of the main part of the sixth example of the roof structure configuration. This configuration is the same as the first configuration example, except that the lower projection 65 of the water drain member 60 is omitted. The water drain member 60D is fixed to the panel 11 by fitting the upper projection 63 into the upper recess UC. In this case, the lower recess LC on the panel 11 side may be omitted. This configuration makes it easier to fix the water drain member 60D and improves workability.

[0065] <Example 7> Figure 16 is a cross-sectional view of the main part of the seventh example of the roof structure. In the configuration examples described above, the gutter member 30 is attached to the panel 11 by installing the gutter member 30 from the top side of the panel 11. However, in this configuration, the gutter member 30 is installed from the bottom side of the panel 11. Therefore, the side wall portion 33a of the gutter member 30 in this configuration is provided with a gutter connecting portion 36 that protrudes toward the panel 11 on the bottom side of the panel 11, and a rib 41d that protrudes toward the panel 11 on the top side of the panel 11. In addition, the frame member 17 has the fourth surface portion 55 described above and a rib 41c that overlaps with the gutter connecting portion 36.

[0066] The gutter connecting portion 36 and the rib 41c have through holes 39 through which fastening members such as screws 37 for connecting the gutter member 30 to the frame member 17 of the panel 11 are inserted. The fourth surface portion 55 and the rib 41d have interlocking concave and concave shapes. The fourth surface portion 55 and the rib 41d may also be fastened together with screws (not shown).

[0067] With this configuration, the gutter member 30 can be fixed to the panel 11 by fastening the gutter connecting portion 36 and the rib 41c with a screw 37 while the fourth surface portion 55 and the rib 41d are engaged in a temporary fixing state. In this way, the gutter member 30 can be attached to the panel 11 not only from above, but also from below.

[0068] As described above, the following matters are disclosed in this specification: (1) A roof structure comprising a panel supported at an angle from a horizontal plane, and a gutter member provided along the lower edge of the panel, having a bottom wall and a pair of side walls rising from the bottom wall, with an opening at the top, A gutter support portion is provided between the panel and the gutter member, and fixes one of the pair of side wall portions, which is positioned on the panel side, to the edge of the panel. A strip-shaped water drain member is provided to cover the gap between the panel and the gutter member from above, and is arranged along the longitudinal direction of the gutter member. Equipped with, The drain member has one end in the width direction perpendicular to the longitudinal direction fixed to the panel above the gutter support, and the other end in the width direction is positioned to hang down into the gutter, straddling the upper end of one of the pair of side walls located on the panel side, and is elastically deformable from a shielding position that covers the gutter support from above to an exposed position that exposes the gutter support. Roof structure. With this roof structure, the flashing member covers the space between the panel and the gutter member from above, ensuring that water flowing over the panel is reliably guided into the gutter without leaking between the panel and the gutter member. Furthermore, when attaching the gutter member to the panel, the flashing member can be lifted upwards to access the gutter support, improving ease of installation. In addition, maintenance of the gutter member after attachment to the panel can be easily performed with good workability by moving the flashing member by elastically deforming it.

[0069] (2) The roof structure according to (1), further comprising a fixing mechanism for fitting the drainage member and the panel together by a pushing operation. This roof structure allows for easy installation because attaching the gutter components to the panels involves a simple process of fitting the flashing components into place by pushing them into the panels.

[0070] (3) The fixing mechanism is The recess provided in the gutter support portion, The roof structure according to (2), wherein the drain member is provided and has a projection that fits into the recess. This roof structure allows the flashing member to be securely fixed to the panel by fitting the recessed and protruding parts together.

[0071] (4) The recess has an upper recess and a lower recess arranged in two stages, vertically in the thickness direction of the panel, The roof structure according to (3), wherein the projection has an upper projection that fits into the upper recess and a lower projection that fits into the lower recess. This roof structure allows one of the two sets of protrusions and recesses, arranged in upper and lower tiers, to be used for temporary fastening of the flashing member, while the other can be used for permanent fixing of the flashing member. As a result, the flashing member can be held in a stable position by temporary fastening while being joined to the panel, improving work efficiency and enabling stable installation.

[0072] (5) The roof structure according to (4), wherein a sealing material is provided inside the upper recess. With this roof structure, the upper projection is secured by a sealant provided in the upper recess, ensuring that rainwater leaks are reliably prevented from entering the upper surface of the panel. Furthermore, even if sealant leaks from the upper recess during installation of the flashing members onto the panel, the leaked sealant is less likely to adhere to the hands of workers. Therefore, it is possible to suppress the amount of sealant that adheres to panels and other surfaces that workers touch, making the cleaning of the sealant after installation much easier.

[0073] (6) The roof structure according to (5), wherein, in a cross-sectional view in the direction of insertion into the upper recess, the upper projection has a trapezoidal groove formed along the longitudinal direction on the surface that abuts the inner wall surface of the upper recess, widening from the inside to the outside of the projection, and the groove bottom angle is obtuse. According to this roof structure, when the upper projection is inserted into the upper recess, the sealing material provided in the upper recess is pushed out from within the recess and enters the groove of the upper projection. This prevents excess sealing material from spilling into the panel. Furthermore, since the sealing material that enters the groove fills the trapezoidal cross-section groove without creating voids, the upper projection and the inner wall surface of the upper recess can be securely bonded. As a result, the flashing member is securely fixed and high sealing performance can be ensured between the upper projection and the upper recess.

[0074] (7) The roof structure according to any one of (3) to (5), wherein the recess is formed in the side surface of the panel so as to be recessed inward from the panel. According to this roof structure, the flashing member can be fixed to the panel by pushing the protruding part into the recess from the side of the panel.

[0075] (8) The roof structure according to any one of (3) to (5), wherein the recess is formed to open upward at the end of the panel on the gutter member side. With this roof structure, the flashing member can be fixed to the panel by pushing the protruding part into the recessed part from above the panel.

[0076] (9) The roof structure according to any one of (1) to (8), wherein a space is formed between the portion of the drain member that hangs down into the gutter and the side wall portion of the gutter member that is positioned on the panel side. With this roof structure, for example, if a catch pan is installed between multiple panels to collect rainwater, the rainwater that flows into the catch pan can be drained using the space between the side wall and the flashing member.

[0077] (10) The roof structure according to any one of (1) to (8), wherein the portion of the drain member that hangs down into the gutter is in close contact with one of the pair of side walls that is positioned on the panel side. This roof structure ensures that the flashing material and the side wall are in close contact, preventing rainwater from entering between the gutter and the panel in the event of overflow from the gutter.

[0078] (11) The roof structure according to any one of (1) to (10), wherein the other end of the flashing member in the width direction is provided with a return portion that extends toward one of the gutter side walls of the pair of side walls that is located on the panel side. This roof structure prevents rainwater that has flowed into the gutter from splashing back into the gutter and seeping into the gap between the gutter and the panel, thanks to the return section.

[0079] (12) The roof structure according to any one of (1) to (11), wherein the panel comprises a plate-shaped core member, a frame member surrounding the side surface of the core member, and an upper plate and a lower plate that sandwich and fix the core member and the frame member in the thickness direction. This roof structure results in a high-strength, highly durable panel structure that is resistant to environmental stresses such as sunlight and snowfall.

[0080] (13) The roof structure according to (12), wherein the core member is a honeycomb structure in which walls made of aluminum or aluminum alloy are erected in a honeycomb pattern. This roof structure results in a lightweight yet highly rigid panel structure.

[0081] (14) The roof structure according to (12) or (13), wherein the flashing material is made of a material selected from silicone rubber, synthetic rubber, or soft polyvinyl chloride. According to this roof structure, the flashing is made of a flexible elastic material, which can be easily elastically deformed by workers, thereby improving work efficiency. [Explanation of Symbols]

[0082] 10 Panel members 11 panels 11A Panel 13 frames 13a Legs 13b Beam section 15 Core members 17 Frame members 19 Top plate 19a End face 21 Bottom plate 23 Adhesive 25 Support bolts 30 Gutter parts 31 Bottom wall 33a Side wall part 33b Side wall part 35,36 Gutter connection section 37 screws 39 Through hole 40 Drainage components 41a, 41b, 41c, 41d Ribs 43a Recess (upper recess) 43b Recess 45. Sealant 47 Stepped section 49 First page 51 Second surface part 53 Third side part 55 Fourth side 57 Opening hole 59 screw holes 60, 60A, 60B, 60C drainage components 60d stepped section 61 Plate-like pieces 61a Proximal extension part 61b Tip side extension part 61c Bend part 61d Stepped section 61e Return section 63 Upper projection 63a straight groove 63b Straight groove 63c Chamfered section 65 Lower protrusion 65a Chamfered section 67,69 Hollow part 71 Cover component 73 Catch Pan 75 Corner Cover 81 Protrusion 83 Proximal extension part 85. Protruding part at the tip 87 Hollow part 100 Roof structure LC lower recess UC upper recess VC (Vertical recess) WD width direction θ1, θ2 Groove bottom angle

Claims

1. A roof structure comprising a panel supported at an angle from a horizontal plane, and a gutter member provided along the lower edge of the panel, having a bottom wall and a pair of side walls rising from the bottom wall, with an open top, A gutter support portion is provided between the panel and the gutter member, and fixes one of the pair of side wall portions, which is positioned on the panel side, to the edge of the panel. A strip-shaped water drain member is provided to cover the gap between the panel and the gutter member from above, and is arranged along the longitudinal direction of the gutter member. Equipped with, The drain member has one end in the width direction perpendicular to the longitudinal direction fixed to the panel above the gutter support, and the other end in the width direction is positioned to hang down into the gutter, straddling the upper end of one of the pair of side walls located on the panel side, and is elastically deformable from a shielding position that covers the gutter support from above to an exposed position that exposes the gutter support. The system includes a fixing mechanism that allows the drainage member and the panel to be fitted together by a pushing operation. The aforementioned fixing mechanism is The recess provided in the gutter support portion, The drain member is provided with a projection that fits into the recess, Roof structure.

2. The recess has an upper recess and a lower recess arranged in two stages, vertically in the thickness direction of the panel. The projection has an upper projection that fits into the upper recess and a lower projection that fits into the lower recess. The roof structure according to claim 1.

3. A sealing material is provided inside the upper recess. The roof structure according to claim 2.

4. In a cross-sectional view of the upper projection in the insertion direction into the upper recess, the surface that abuts the inner wall surface of the upper recess has a trapezoidal groove formed along its longitudinal direction, widening from the inside to the outside of the projection, and the groove bottom angle is obtuse. The roof structure according to claim 3.

5. The recess is formed on the side surface of the panel, recessed inward from the panel. The roof structure according to claim 1.

6. The recess is formed to open upward at the end of the panel on the gutter member side. The roof structure according to claim 1.

7. A space is formed between the portion of the drain member that hangs down into the gutter and one of the side walls of the gutter member that is positioned on the panel side. The roof structure according to claim 1.

8. The portion of the drain member that hangs down into the gutter is in close contact with one of the pair of side walls that is positioned on the panel side. The roof structure according to claim 1.

9. The other end of the drain member in the width direction is provided with a return portion that extends toward one of the gutter side walls located on the panel side of the pair of side walls. The roof structure according to claim 1.

10. The panel comprises a plate-shaped core member, a frame member surrounding the side surface of the core member, and an upper plate and a lower plate that sandwich and fix the core member and the frame member in the thickness direction. A roof structure according to any one of claims 1 to 9.

11. The roof structure according to claim 10, wherein the core member is a honeycomb structure in which walls made of aluminum or an aluminum alloy are erected in a honeycomb-like manner.

12. The drain member is made of a material selected from silicone rubber, synthetic rubber, or soft polyvinyl chloride. The roof structure according to claim 10.

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