Roof structure

Abstract

To provide a roof structure excellent in workability.SOLUTION: A roof structure comprises: a roof body; a stringer arranged on a downstream side of the roof body; an upstream engaging member 70 fixed on an upstream support member 2a supporting an upstream side of the roof body with a machine screw 7a inserted in a width direction; a substrate member 71 bridged between the upstream support member and the stringer; and a ceiling member covering a lower part of the roof body, wherein the ceiling member has an end of the upstream side engaged on the upstream engaging member and an end of the downstream side fixed on the substrate member with the machine screw 7b penetrated from a lower side.SELECTED DRAWING: Figure 8

Description

[Technical field]

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

[0002] Conventionally, a roof structure including a plurality of pillars, a plurality of girders (underwater girders, abovewater girders, a pair of side girders) attached to the pillars, and a roof surface material attached to these girders has been known (see, for example, Patent Document 1). This roof structure has a ceiling material that covers the lower part of the roof surface material in a rectangular area surrounded by the girders. The ceiling material forms the ceiling surface of the roof structure, and a plurality of ceiling panels formed in elongated plate shapes are arranged between the underwater girders and the abovewater girders and connected to each other to form the ceiling surface. The ceiling panel arranged furthest belowwater is engaged at the underwater side to a mounting material fixed to the underwater girders, and the abovewater side is fixed to a support material provided between the underwater girders and the abovewater girders with a screw that enters from below. In addition, the other ceiling panels have their underwater ends engaged to the ceiling panel adjacent to the underwater side, and their abovewater ends fixed to the support material with a screw that enters from below. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2020-159129 A Summary of the Invention [Problem to be solved by the invention]

[0004] In the above-mentioned conventional roof structure, the underwater end of each ceiling panel is engaged with the mounting material or ceiling panel adjacent to the underwater side, and the abovewater end is fixed to the support material with a screw that enters from below, connecting multiple ceiling panels from the underwater side to the abovewater side. Therefore, the screw that fixes the ceiling panel that is the most abovewater to the support material is placed in a position close to the abovewater girders. In some cases, the abovewater side of the roof structure is installed along the exterior wall of the building, or a lattice or the like is installed under the abovewater girders, and if the screw that fixes the ceiling panel to the support material is placed in a position close to the abovewater girders or the exterior wall of the building, there is a problem that the exterior wall or lattice interferes with the work of turning the screw, making it difficult to tighten the screw straight or to tighten it firmly, resulting in poor workability.

[0005] The present invention has been made in consideration of the above problems, and an object of the present invention is to provide a roof structure with excellent workability. [Means for solving the problem]

[0006] In order to achieve this purpose, the roof structure of the present invention comprises a roof body, a girder provided on the belowwater side of the roof body, an above-water engaging member fixed to an above-water support member supporting the above-water side of the roof body by a screw that enters in a prospective direction, a base member spanned between the above-water support member and the girder, and a ceiling member covering the below of the roof body, wherein the above-water end of the ceiling member is engaged with the above-water engaging member and the below-water end is fixed to the base member by a screw that enters from below. Other features of the present invention will become apparent from the following detailed description of the present invention and the accompanying drawings. Effect of the Invention

[0007] According to the present invention, it is possible to provide a roof structure with excellent workability. [Brief description of the drawings]

[0008] [Figure 1]1 is a schematic diagram of a wall-mounted roof unit which is an example of an outdoor structure according to the present invention. [Diagram 2] A vertical cross-sectional view of a wall-mounted roof unit. [Diagram 3] A diagram showing how to place the ceiling panel on the angle iron. [Figure 4] FIG. 4 is a cross-sectional view showing a water-based engaging member. [Diagram 5] FIG. 2 is a cross-sectional view showing a ceiling panel. [Figure 6] FIG. 6(a) is a plan view of the ceiling panel to be placed furthest below the water, and FIG. 6(b) is a cross-sectional view of the ceiling panel to be placed furthest below the water. [Figure 7] A cross-sectional view showing a method of fixing the underwater side of a ceiling panel to be placed furthest below the water. [Figure 8] Figure 8(a) is a diagram showing a method of installing the above-water engagement member, Figure 8(b) is a diagram showing a method of installing the ceiling panel that will be placed furthest above the water, Figure 8(c) is a diagram showing a method of installing the ceiling panel that will be the second from the below-water side, and Figure 8(d) is a diagram showing a method of installing the ceiling panel that will be the third from the below-water side. [Figure 9] FIG. 13 is a schematic diagram of another example of an outdoor construction, an independently constructed roof unit. [Figure 10] FIG. 2 is a longitudinal section of an independently constructed roof unit. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] Hereinafter, a roof structure according to one embodiment of the present invention will be described with reference to the drawings. In this embodiment, as an example of a roof structure, a wall-mounted roof unit 1 that is attached to a building 2 and has a roof main body 3, one end of which is fixed to the exterior wall 2a of the building 2 and the other end of which is supported by a pillar 4, as shown in Figure 1, will be described as an example.

[0010] In the following explanation, when the constructed roof unit 1 is viewed toward the building 2, the direction that is up and down is referred to as the up-down direction, the direction that is left and right and runs along the exterior wall 2a of the building 2 is referred to as the left-right direction, and the direction toward the building 2 side and the side opposite the building is referred to as the prospective direction. Even for each part of the roof unit 1, or even for each member that constitutes the roof unit 1 in a standalone state, the directions will be specified and explained in terms of the up-down, left-right, and prospective directions in the constructed roof unit 1 state.

[0011] As shown in Figures 1 and 2, the roof unit 1 of this embodiment comprises a roof main body 3 having one end fixed to the exterior wall 2a of the building 2 and having a slope that gradually decreases in height in the direction away from the building 2, a girder 5 provided on the belowwater side of the roof main body 3, two pillars 4 erected from the ground and to which both ends of the girder 5 are connected, a side girder 6 that is spanned between the upper ends of each pillar 4 and the building 2 and connected to the roof main body 3, and a ceiling structure 7 that covers the area formed below the roof main body 3 by the girder 5 and side girder 6 joined by the pillars 4 and the exterior wall 2a.

[0012] The roof body 3 has a rafter hanger 3a fixed to the exterior wall 2a of the building 2, a plurality of rafters 3b that are spaced apart in the width direction and span between the rafter hanger 3a and the girder 5, and a roof surface material 3c that spans between adjacent rafters 3b. In this embodiment, the exterior wall 2a of the building 2 corresponds to an above-water support member that supports the above-water side of the roof body 3.

[0013] The girder material 5 has a girder body 50 with both ends abutted against the side surfaces of the supports and fixed thereto, and a gutter 51 fixed to the above-water side of the girder body 50. The girder body 50 and the gutter 51 are formed, for example, from metal (e.g., aluminum alloy) shaped members formed by extrusion molding, and each has hollow portions 50a, 51a that run through in the longitudinal direction and have a rectangular cross section, as shown in Fig. 2. The girder body 50 has a substantially rectangular cross section, and the gutter 51 is attached along the longitudinal direction to the lower part of the surface 50b of the girder body 50 that faces above the water.

[0014] The gutter 51 has a gutter fixing part 51b fixed to face the surface 50b of the girder body 50 facing the water side, a flat lower surface part 51c extending from the lower end of the gutter fixing part 51b to the water side, a gutter outer wall part 51d extending upward from the water side end of the lower surface part 51c, a flat bottom surface part 51e facing the upper part of the lower surface part 51c with a gap, a groove lower wall part 51f connecting the water side end of the bottom surface part 51e to the gutter fixing part 51b with an inclined surface, and a groove upper wall part 51g connecting the water side end of the bottom surface part 51e to the gutter outer wall part 51d with an inclined surface. The bottom surface part 51e, the groove lower wall part 51f, and the groove upper wall part 51g form a concave drainage groove 51h that opens upward with the bottom surface part 51e as the bottom. A hollow portion 51a is provided between the bottom surface portion 51e, the groove lower wall portion 51f, and the groove upper wall portion 51g and the gutter fixing portion 51b, the lower surface portion 51c, and the gutter outer wall portion 51d.

[0015] The underwater ends of the rafters 3b and roof surface material 3c of the roof body 3 are connected to the gutter outer wall portion 51d so as to cover the upper part of the gutter outer wall portion 51d and extend further downwater than the gutter outer wall portion 51d.

[0016] The ceiling structure 7 has above-water retaining members 70 attached to the exterior wall 2a, a base member 71 that is bridged between the exterior wall 2a and the girder material 5, a ceiling member 72 that covers the area between the above-water retaining members 70 and the girder body 50 from below, and angle members 73 (Fig. 3) that are attached to the left and right side girders 6, respectively. The above-water retaining members 70 and the base member 71 are shaped members made of metal (e.g., aluminum alloy) formed by extrusion molding.

[0017] The above-water engaging member 70 has approximately the same length as the rafter hanger 3a, and is disposed below and parallel to the rafter hanger 3a and fixed to the exterior wall 2a. As shown in Fig. 4, the above-water engaging member 70 has a hollow portion 70a penetrating in the longitudinal direction, and is provided with an above-water facing wall portion 70b that faces the exterior wall 2a on the above-water side of the hollow portion 70a, an upper fixing portion 70c that protrudes above the hollow portion 70a, a base material fixing portion 70d that protrudes below the water side from the hollow portion 70a, and a ceiling member engaging portion 70e.

[0018] The upper fixing part 70c is connected to the above-water facing wall part 70b, protrudes upward, and is arranged to face the exterior wall 2a. The upper and lower ends of the above-water facing wall part 70b and the upper end of the upper fixing part 70c are provided with exterior wall abutment pieces 70f that protrude toward the exterior wall 2a and abut against the exterior wall 2a. The above-water locking member 70 is fixed to the upper fixing part 70c, which faces the rafter hanger 3a in a state substantially parallel to the exterior wall abutment piece 70f abutting the exterior wall 2a, by a screw 7a that enters from the below-water side to the above-water side in the prospective direction.

[0019] The upper surface portion 70g forming the upper surface of the hollow portion 70a is horizontal when the above-water engaging member 70 is attached to the outer wall 2a, and the base material fixing portion 70d is connected to the upper surface portion 70g and extends horizontally below the water. The lower surface forming portion 70h forming the lower surface of the hollow portion 70a has a step such that the below-water side is higher than the above-water side. In other words, the lower side of the above-water engaging member 70 has a recess 70i that is recessed upward.

[0020] The ceiling member locking portion 70e is connected to the end of the underwater side (recess side) of the lower surface forming portion 70h and extends horizontally below the water surface. The base material fixing portion 70d and the ceiling member locking portion 70e, which protrude below the water surface beyond the hollow portion 70a, protrude below the water surface, such that the base material fixing portion 70d protrudes longer than the ceiling member locking portion 70e.

[0021] The base member 71 is a metal (e.g., aluminum alloy) shaped member formed by extrusion, and has a rectangular cross section and a square pipe shape penetrating in the longitudinal direction, as shown in Fig. 3. As shown in Fig. 2, the base member 71 is placed on the flat connecting member 8 that protrudes above the water side from the gutter outer wall portion 51d of the gutter 51 and is fixed to the underside portion 51c, and the base member fixing portion 70d of the above-water engaging member 70, and is fastened with screws to the connecting member 8 and the base member fixing portion 70d. A plurality of base members 71 are provided between the left and right side girders 6, and are arranged at appropriate intervals from each other in the left-right direction.

[0022] The angle members 73 are attached to the lower ends of the left and right side beams 6. The angle members 73 are arranged such that one plate portion 73a of the two plate portions 73a, 73b having an L-shaped cross section is fixed to the opposing surfaces of the left and right side beams 6, the other plate portion 73b is positioned at the lower end of the fixed plate portion 73a, and the other plate portion 73b protrudes to the opposing side. The left and right ends of the ceiling member 72 are placed on the protruding plate portions 73b.

[0023] The ceiling member 72 is composed of multiple plate-shaped ceiling panels 74, 75 that are long in the width direction. The multiple ceiling panels 74, 75 are arranged in the prospective direction, and two adjacent ceiling panels 74, 75 are configured so that the above-water ends of the ceiling panels 74, 75 located below the water are engaged with the below-water sides of the ceiling panels 74 located above the water.

[0024] As shown in Figures 5 and 6, the multiple ceiling panels 74, 75 have panel surface portions 74a, 75a that form a substantially flat surface as a whole. Of the multiple ceiling panels 74, 75, the ceiling panels 74 except for the ceiling panel 75 that is disposed furthest below the water surface are provided with belowwater extension pieces 74b that are connected to the belowwater end of the panel surface portion 74a and extend below the water surface to a position higher than the panel surface portion 74a. There is a step between the panel surface portion 74a and the belowwater extension piece 74b, and the underwater side of the ceiling panel 74 is provided with a recess 74c that is recessed upward.

[0025] The underwater extension piece 74b is provided with a central wall portion 74d that rises upward from near the center in the projection direction, and a panel extension portion 74e that extends underwater from the upper end of the central wall portion 74d. The recess 74c of the ceiling panel 74 has the same shape as the recess 70i of the above-water engagement member 70, and the extension amount of the underwater extension piece 74b toward the central wall portion 74d and the extension amount of the panel extension portion 74e are formed to be the same as the protrusion amount from the hollow portion 70a of the base material fixing portion 70d and the ceiling member engagement portion 70e.

[0026] The above-water end of the panel surface portion 74a of each ceiling panel 74, 75 is provided with an insertion portion 74f, 75b that rises upward and fits into the recess 74c of the adjacent ceiling panel 74 on the above-water side or the recess 70i of the above-water engagement member 70. The insertion portions 74f, 75b are formed so that when they fit into the recess 74c of the ceiling panel 74 or the recess 70i of the above-water engagement member 70 and the upper ends of the insertion portions 74f, 75b abut against the recesses 74c, 70i, the lower surfaces of the panel surface portions 74a, 75a are at the same height as the lower surface of the lower surface forming portion 70h.

[0027] The above-water side portion of the panel surface portion 74a, 75a of each ceiling panel 74, 75 is provided with an above-water wall portion 74g, 75c extending upward, below the water side further than the insertion portion 74f, 75b, and the upper end side of the above-water wall portion 74g, 75c is provided with an engagement piece 74h, 75d extending above the water side and engaging with the adjacent ceiling panel 74 or above-water engaging member 70 on the above-water side.

[0028] The above-water side of each of the ceiling panels 74, 75 is locked with the engagement pieces 74h, 75d placed on the below-water extension piece 74b of the adjacent ceiling panel 74 on the above-water side or the ceiling member locking portion 70e of the above-water locking member 70, and the insertion portions 74f, 75b entering the recesses 74c of the ceiling panel 74 or the recesses 70i of the above-water locking member 70 with their upper ends abutting the recesses 74c, 70i. With the above-water side locked, the ceiling panel 74 has the panel extension portion 74e abutting the underside of the base member 71, and is fixed to the base member 71 by the screws 7b entering from below.

[0029] The ceiling panel 75 arranged furthest below the water is provided with an underwater extension piece 75e extending upward from the underwater end of the panel surface portion 75a. A panel locking piece 75f protruding slightly below the water is provided at the upper end of the underwater extension piece 75e. The ceiling panel 75 is also provided with a hole 75g in the panel surface portion 75a through which the vertical gutter 11 extending from the bottom surface portion 51e of the gutter 51 penetrates.

[0030] 7, the ceiling panel 75 is fixed by an engaging and fixing member 9 with its above-water side engaged with the adjacent ceiling panel 74. The engaging and fixing member 9 has an engaging portion 9a that engages with the panel engaging piece 75f, and is fixed by a screw 7c that enters the lower surface portion 51c of the gutter 51 from below. The engaging and fixing member 9 is covered by a cover material 10 that is attached from below. The ceiling structure 7 is attached to the exterior wall 2 a of the building 2 with the roof body 3 supported by the pillars 4 together with the girders 5 and side girders 6 .

[0031] First, as shown in Fig. 8(a), the above-water engaging member 70 is fixed to the exterior wall 2a with a screw 7a that enters in the prospective direction, and the connecting member 8 is attached to the lower surface portion 51c of the gutter 51. In addition, angle members 73 are attached to the left and right side girders 6.

[0032] Next, the base member 71 is placed on the connecting member 8 and the base material fixing portion 70d of the above-water engaging member 70, and the base member 71 is fastened to the connecting member 8 and the base material fixing portion 70d with screws.

[0033] Next, the ceiling panel 74 is positioned from below above the angle irons 73 on both sides and below the water than the above-water engaging members 70, and then the ceiling panel 74 is moved toward the above-water engaging members 70. At this time, the ceiling panel 74 is tilted so that the left end is higher, and the higher end is moved above the angle irons 73 first while being positioned to the left of the mounting position in the left-right direction, for example as shown in Figure 3, and then the right end is pushed up to a position higher than the angle irons, and then returned to the mounting position and positioned on the plate portion 73b of the angle iron 73.

[0034] The above-water side of the ceiling panel 74 is locked when the engagement piece 74h of the ceiling panel 74 is placed on the ceiling member locking portion 70e of the above-water locking member 70, the insertion portion 74f enters the recess 70i of the above-water locking member 70, and its upper end abuts against the recess 70i. Therefore, the ceiling panel 74 moves at least by the extension amount of the engagement piece 74h extending from the above-water wall portion 74g to the above-water side.

[0035] Next, the panel extension 74e of the ceiling panel 74 is brought into contact with the lower surface of the base member 71, and the panel extension 74e is fixed to the base member 71 by the screws 7b that enter from below. Next, a new ceiling panel (hereinafter referred to as a new ceiling panel) 74 is attached to the underwater side of the already installed ceiling panel (hereinafter referred to as an existing ceiling panel) 74.

[0036] Specifically, the new ceiling panel 74 is positioned from below above the angle members 73 on both sides and below the water than the existing ceiling panel 74, and then the new ceiling panel 74 is moved toward the existing ceiling panel 74. At this time, as shown in Fig. 8(b), the engagement piece 74h of the new ceiling panel 74 is placed on the belowwater extension piece 74b of the existing ceiling panel 74, and the insertion part 74f enters the recess 74c of the existing ceiling panel 74, and with its upper end abutting the recess 74c, the abovewater side of the ceiling panel 74 is locked.

[0037] Next, as shown in Fig. 8(c), the panel extension 74e of the ceiling panel 74 is abutted against the underside of the base member 71, and the ceiling panel 74 is fixed to the base member 71 by screws 7b entering from below. In this way, as shown in Fig. 8(d), the new ceiling panel 74 is engaged with the existing ceiling panel 74 from above the water and fixed to the base member 71.

[0038] 7, the ceiling panel 75 furthest below the water is positioned above the angle irons 73 on both sides from below, below the water than the existing ceiling panel 74, and then the ceiling panel 75 is moved toward the existing ceiling panel 74. At this time, the engagement piece 75d of the ceiling panel 75 is placed on the belowwater extension piece 74b of the existing ceiling panel 74, and the insertion part 75b enters the recess 74c of the existing ceiling panel 74, and with its upper end abutting the recess 74c, the abovewater side of the ceiling panel 75 is locked.

[0039] Next, the upper end of the underwater extension piece 75e of the ceiling panel 75 is abutted against the base member 71, and the engaging and fixing member 9 is engaged with the panel locking piece 75f and fixed to the lower surface portion 51c of the gutter 51 by a screw 7c that enters from below.

[0040] Finally, the cover material 10 is engaged with the engaging and fixing member 9 from below and fixed to the lower surface portion 51c of the groove 51 by the screw 7d that enters from below, and the cap 10a is engaged with the cover material 10 so as to cover the screw 7d.

[0041] According to the roof unit 1 of this embodiment, the above-water fastening member 70 to which the ceiling panel 74 on the most above-water side is fastened is fixed by the screw 7a that enters from the below-water side toward the above-water side, so even if the above-water fastening member 70 supporting the above-water side of the roof body 3 is fixed to the exterior wall 2a, the exterior wall 2a does not hinder the above-water fastening member 70 when fastening it. In addition, since the above-water end of the ceiling panel 74 on the most above-water side is fastened to the above-water fastening member 70 and the below-water end is fixed to the base member 71 by the screw 7b that enters from below, it is possible to arrange the position where the above-water ceiling panel 74 on the base member 71 is fixed at a position farther away from the exterior wall 2a. Therefore, when the screw 7b that fastens the above-water ceiling panel 74 is fastened, the sash frame 2b provided on the exterior wall 2a does not hinder the screw fastening work, so that the above-water ceiling panel 74 is easy to install, and it is possible to provide a roof unit 1 with excellent workability.

[0042] In addition, because the ceiling member 72 is composed of multiple ceiling panels 74, 75 arranged side by side in the prospective direction, each ceiling panel 74, 75 is smaller than when the entire area under the roof main body 3 is covered with a single ceiling member. This makes it easier to handle the individual ceiling panels 74, 75, and provides excellent workability. In addition, because the number of ceiling panels 74 can be adjusted to match the size of the roof main body 3, a highly versatile roof unit 1 can be provided.

[0043] In addition, it is possible to cover the underside of the roof body 3 simply by engaging the above-water end of the ceiling panel 74 located below the water side of two adjacent ceiling panels 74 with the below-water end of the ceiling panel 74 located above the water side, and fixing the below-water end of the ceiling panel 74 located below the water side with screws 7b that enter the base member 71 from below.

[0044] The bottom surface portion 51e and the lower surface portion 51c forming the bottom of the drainage groove 51h of the gutter 51 need to be provided with a vertical gutter 11 to drain water that has entered the drainage groove 51h, and the ceiling panel 75 located below the gutter 51 and located on the most downstream side also needs to be provided with a hole 75g through which the vertical gutter 11 penetrates. In this case, for example, in the case of a structure in which a plurality of ceiling panels 74 are sequentially attached from the downstream side as in the conventional case, the member corresponding to the above-water engaging member 70 to which the ceiling panel 74 to be attached first is engaged is arranged on the downstream side and located below the gutter 51, so that the processing to form the hole 75g through which the vertical gutter 11 penetrates is complicated. On the other hand, in the roof unit 1 of this embodiment, the flat panel surface portion 75a of the bottom surface portion 51e of the drainage groove of the ceiling panel 75 is located below the bottom surface portion 51e forming the bottom of the drainage groove 51h, so that the hole 75g through which the vertical gutter 11 penetrates can be easily formed. The ceiling member may be composed of one ceiling panel. In this case, one ceiling panel constituting the ceiling member becomes the ceiling panel located below the gutter, and a hole through which the vertical gutter passes is formed in the panel surface of the ceiling panel.

[0045] Moreover, unlike the other ceiling panels 74, the ceiling panel 75 furthest below the water does not have a panel extension, and is fixed by engaging an engaging and fixing member 9 having an engaging portion 9a that engages a panel engaging piece 75f that protrudes slightly below the water. Therefore, with the ceiling panel 75 attached, the panel surface portion 75a of the ceiling panel 75 can be provided to a position closer to the girder main body 50. This expands the area where the panel surface portion 75a of the ceiling panel 75 faces the bottom surface portion 51e of the gutter 51, and a hole 75g through which the vertical gutter 11 provided from the bottom surface portion 51e of the gutter 51 penetrates can be provided in the flat panel surface portion 75a of the ceiling panel 75.

[0046] In the above embodiment, the roof structure is described as a wall-mounted roof unit 1 attached to the building 2, which has a roof body 3 whose one end is fixed to the exterior wall 2a of the building 2 and whose other end is supported by a support 4, but the present invention is not limited to this. For example, as shown in Figs. 9 and 10, the roof unit 1a may be independently constructed and supported by four supports 4. More specifically, the roof unit 1a may have four supports 4, two girders 5, 5a and two side girders 6 attached between the upper ends of the supports 4, and the roof body 3 attached to the girders 5, 5a and side girders 6. In this case, for example, the above-water engaging member 70 is fixed to the girder 5a arranged on the above-water side by a screw 7a that enters in the expected direction, and the ceiling panels 74, 75 are sequentially attached from the above-water side to the below-water side. In such a roof unit 1a, even if a lattice or the like is provided under the above-water side girder 5a, when the above-water engaging member 70 supporting the above-water side of the roof main body 3 is fixed to the above-water side girder 5a, the lattice or the like does not hinder the fixing of the above-water engaging member 70, making construction easy.

[0047] The above-mentioned embodiment is for the purpose of facilitating understanding of the present invention, and is not intended to limit the present invention. The present invention can be modified or improved without departing from the spirit of the present invention, and it goes without saying that the present invention includes equivalents thereof. The present embodiment includes at least the following inventions.

[0048] This roof structure comprises a roof body, a girder provided on the belowwater side of the roof body, an abovewater engaging member fixed to an abovewater support member supporting the abovewater side of the roof body by a screw entering in a prospective direction, a base member spanned between the abovewater support member and the girder, and a ceiling member covering the below of the roof body, wherein the abovewater end of the ceiling member is engaged with the abovewater engaging member and the belowwater end is fixed to the base member by a screw entering from below.

[0049] According to such a roof structure, the above-water fastening member to which the ceiling member is fastened is fixed by a screw that enters from the below-water side toward the above-water side, so even if the part to which the above-water support member that supports the above-water side of the roof body is fixed is a girder or an exterior wall with a lattice, it does not interfere with the screw fastening. Also, since the above-water end of the ceiling member is fastened to the above-water fastening member and the below-water end is fixed to the base member by a screw that enters from below, the position to fasten the ceiling member to the base member can be located at a position farther away from the part to which the above-water fastening member is fixed. Therefore, since there are no obstacles around when tightening the screws to fasten the ceiling member, it is possible to provide a roof structure that is easy to install the ceiling member and has excellent workability.

[0050] In such a roof structure, the ceiling member is characterized in that it is composed of a plurality of ceiling panels arranged side by side in the prospective direction. According to this roof structure, the ceiling member is composed of multiple ceiling panels, so each ceiling panel is smaller than when the entire area under the roof body is covered with a single ceiling member, making it easier to handle and easier to install. In addition, the number of ceiling panels can be adjusted according to the size of the roof body, so a highly versatile roof structure can be provided.

[0051] Such a roof structure is characterized in that two adjacent ceiling panels among the multiple ceiling panels have the above-water side of the ceiling panel located below the water surface engaged with the below-water side of the ceiling panel located above the water surface, and the below-water side end of the ceiling panel located below the water surface is fixed by a screw that enters the base member from below.

[0052] With this type of roof structure, it is possible to easily cover the underside of the roof body with the ceiling members by simply engaging the above-water side of each of the multiple ceiling panels with the below-water side of the ceiling panel located above the water and fixing the below-water end of the ceiling panel located below the water with screws that enter the underlying member from below.

[0053] Such a roof structure is characterized in that the girder is provided with a gutter forming a drainage channel with a flat bottom, and the ceiling panel among the plurality of ceiling panels that is positioned furthest below the water is positioned below the gutter, and the flat surface of the ceiling panel is located below the bottom.

[0054] A vertical gutter must be provided at the bottom of the gutter drain to drain water that has entered the drain, and if a ceiling panel is present below the gutter, a hole must be provided in the ceiling panel through which the vertical gutter can penetrate. In this case, the ceiling panel that is placed below the gutter and below the bottom of the drain drain and is placed furthest below the water has a flat surface that is located below the bottom of the drain drain, so it is easy to form a hole through which the vertical gutter can penetrate.

[0055] Such a roof structure is characterized in that the above-water support member is fixed to the outer wall of a building adjacent to the roof structure.

[0056] According to this type of roof structure, even if the portion where the above-water support member is fixed is the exterior wall of the building where the roof structure is installed, the position where the ceiling member is fixed to the base member is located farther away from the exterior wall, so the exterior wall does not get in the way when tightening the screws that fix the ceiling member. This makes it possible to provide a roof structure that is easy to attach the ceiling member and has excellent workability. [Explanation of symbols]

[0057] 1 roof unit, 1a roof unit, 2 building, 2a exterior wall, 3 roof body, 5 girder, 5a girder above the water, 7a screw going in the direction of the view, 7b screw entering from below, 51 groove, 51c lower surface portion, 51e bottom surface portion, 51h Drainage groove, 70 Water retaining member, 71 Base member, 72 Ceiling member, 74 ceiling panel, 75 ceiling panel, 75a panel surface portion,

Claims

1. A roof body, A girder material provided on the underwater side of the roof body; An above-water engaging member is fixed to an above-water side member, which is either an exterior wall of a building supporting the above-water side of the roof body or a girder member arranged on the above-water side of the roof body, by a screw that enters in the prospective direction; A base member that is bridged between the above-water side member and a girder provided on the below-water side; A ceiling member covering the lower part of the roof body; A roof structure having: The ceiling member is composed of a plurality of ceiling panels arranged side by side in a prospective direction, When, of the two adjacent ceiling panels in the plurality of ceiling panels, the ceiling panel on the underwater side is not the ceiling panel disposed furthest underwater, The above-water side of the ceiling panel located on the underwater side is engaged with the below-water side of the ceiling panel located on the above-water side, and the underwater end of the ceiling panel located on the underwater side is fixed by a screw that enters the base member from below, and The screw that enters the base member from below is covered by an above-water end of the ceiling panel that is located on the below-water side of the ceiling panel that is fixed by the screw that enters the base member from below, The girder provided on the downstream side of the water is provided with a gutter forming a drainage groove having a flat bottom, A roof structure characterized in that the above-water end of the ceiling panel positioned furthest above the water is engaged with the above-water engaging member, and the below-water end of the ceiling panel positioned furthest below the water is fixed to the gutter by a screw entering from below.

2. 2. The roof structure of claim 1, A roof structure characterized in that the ceiling panel among the plurality of ceiling panels that is positioned furthest below the water is positioned below the gutter, and a flat surface of the ceiling panel is located below the bottom.

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