Corner ridge structure

Abstract

To provide corner ridge structure which can restrict deformation to a lower surface side in a vertical direction of a corner ridge cover.SOLUTION: Corner ridge structure 100 includes: multiple pairs of roof materials 11 which are arranged on each upper side of a pair of sheathing roof boards 4 and 5 positioned on both sides while sandwiching a corner ridge 6, extend in a roof lateral direction and are arranged in a plurality of stages in a roof longitudinal direction; and multiple corner ridge covers 20 which are arranged over a pair of roof materials 11 positioned on both sides of the corner ridge 6 in each of the stages of the multiple pairs of roof materials 11. Reinforcement members for restricting deformation to the lower surface side in the vertical direction of each of the corner ridge covers 20 are provided between the multiple corner ridge covers 20 and each of the sheathing roof boards 4 and 5.SELECTED DRAWING: Figure 1

Description

[Technical Field]

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

[0002] A conventional corner ridge structure is known that includes multiple pairs of roofing materials arranged on a pair of sheathing boards located on both sides of a corner ridge, each pair of roofing materials extending laterally on both sides of the corner ridge, and arranged in multiple rows in the vertical direction of the roof, and multiple corner ridge covers (see, for example, Patent Document 1 below). Each of these multiple corner ridge covers is arranged across the pair of roofing materials located on both sides of the corner ridge in each row (each row in the vertical direction of the roof) of the multiple pairs of roofing materials.

[0003] A pair of roofing materials located on either side of the corner ridge of each vertical roof step are positioned so that their corner-side edges are spaced apart from the corner ridge. The corner-side edges of the pair of roofing materials have vertical seams that extend parallel to the corner ridge (ridge line). The corner ridge cover has left and right vertical seams that extend parallel to the corner ridge (ridge line), and during installation, the corner ridge cover is slid from below water to above water along the corner ridge, causing these left and right vertical seams to engage with the vertical seams of the pair of roofing materials. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Utility Model Application Publication No. 7-4637 Summary of the Invention [Problem to be solved by the invention]

[0005] When applying the corner ridge structure to a building roof, it is conceivable to enlarge the corner ridge cover and use it as part of the design to improve the exterior design. However, if the corner ridge cover is enlarged, it will be used more frequently as a foothold for workers during roof installation, and snow will easily accumulate on the top surface of the corner ridge cover during snowfall. For this reason, it is necessary to improve the deformation resistance of the corner ridge cover against loads from the top surface.

[0006] However, the conventional corner ridge structure shown in Patent Document 1 has the problem that when a large amount of tread pressure or snow load acts on the top surface of the corner ridge cover, the corner ridge cover is pushed vertically downward (pushed into the space between the sheathing board and the corner ridge cover) and becomes deformed.

[0007] The present invention has been made to solve the above-mentioned problems, and aims to provide a corner ridge structure that can restrict deformation of the corner ridge cover toward its lower surface in the vertical direction. [Means for solving the problem]

[0008] The first invention comprises multiple pairs of roofing materials arranged on a pair of sheathing boards located on either side of a corner ridge, with pairs of roofing materials extending laterally on both sides of the corner ridge and arranged in multiple rows in the vertical direction of the roof; multiple corner ridge covers arranged across the pairs of roofing materials in each row of the multiple pairs of roofing materials; and reinforcing members arranged between the multiple corner ridge covers and each sheathing board to restrict deformation of each corner ridge cover toward its vertical underside.

[0009] This configuration, with the reinforcing members provided between the corner cover and each sheathing board, prevents deformation of the corner cover downward in the vertical direction, which can be prevented by, for example, treading loads when the top surface of the corner cover is used as a foothold during roof installation, or by snow loads acting on the top surface of the corner cover.

[0010] In the second invention, in the first invention, each of the pair of roof materials has one end in the horizontal direction of the roof located near the corner ridge and the other end located further outward in the horizontal direction of the roof than each corner ridge cover, and the corner ridge cover is arranged to cover from above the boundary position of the pair of roof materials at the step on which the corner ridge cover is located, and it is preferable that the reinforcing member includes a cover lower roof portion, which is the portion arranged below the corner ridge cover of each of the pair of roof materials.

[0011] With this configuration, the lower roof portion of the roofing material acts as a reinforcing member between the corner ridge cover and each sheathing board, thereby restricting the corner ridge cover's downward deformation in the vertical direction. In other words, in conventional corner ridge structures, one end of the roofing material is located away from the corner ridge, resulting in a large gap between the pair of roofing materials located on both sides of the corner ridge. This creates a large space below the corner ridge cover where no roofing material is present, reducing the corner ridge cover's deformation resistance. In contrast, with this configuration, by positioning one end of the roofing material near the corner ridge (by extending the roofing material to the corner ridge), a multi-layer structure can be created using the corner ridge cover and the roofing material. This restricts the corner ridge cover's downward deformation in the vertical direction. Note that "near the corner ridge" means either the same position as the corner ridge or a position slightly away (e.g., a few millimeters to a few centimeters).

[0012] In a third invention, as in the second invention, a plurality of spatial arrangement members are provided which are arranged in the space between the pair of sheathing boards and each of the plurality of pairs of roof materials, and each of the plurality of spatial arrangement members is arranged so that, when viewed from the vertical direction of the sheathing boards on which each spatial arrangement member is arranged, at least a portion of the spatial arrangement members overlaps with the corner ridge cover which is provided on the same level as each of the spatial arrangement members, and it is preferable that the reinforcing member is constituted by the roof portion under the cover of the plurality of pairs of roof materials and the plurality of spatial arrangement members.

[0013] With this configuration, by placing the spatial arrangement member in the space between the pair of sheathing boards and the roof material on its upper surface, even if the corner cover elastically deforms downward due to a load from the upper surface and presses down on the roof material, the deformation of the roof material is restricted by the spatial arrangement member, thereby restricting the deformation of the corner cover downward in the vertical direction.

[0014] In the fourth invention, in the third invention, it is preferable that the plurality of spatial arrangement members are arranged so that their respective lower surfaces abut the upper surfaces of the respective sheathing boards and their respective upper surfaces abut the lower surfaces of the roofing materials arranged at the same level as the respective spatial arrangement members.

[0015] This configuration allows the spatial arrangement members to be positioned between each sheathing board and the roof material above it without any gaps in the height direction (perpendicular to the sheathing boards). Therefore, when the corner cover elastically deforms downward due to a load from above and presses down on the roof material, the spatial arrangement members can reliably restrict deformation of the roof material. This in turn suppresses deformation of the corner cover downward in the vertical direction.

[0016] According to a fifth aspect of the present invention, in the third aspect, it is preferable that the plurality of spatial arrangement members are fixed to the upper surface of each of the sheathing boards with an adhesive.

[0017] This configuration prevents damage to the roofing material when a load acting from the top of the corner cover causes the roofing material to deform and come into contact with the spatial arrangement member. Specifically, if axial fixing members such as bolts or nails were used to secure the spatial arrangement member, there is a risk that the roofing material would come into contact with the axial fixing members and be damaged when the roofing material deforms and presses down on the spatial arrangement member. In particular, if the spatial arrangement member is made of an elastic member that can deform in the vertical direction, the spatial arrangement member will compress and deform under the load from the roofing material, but the axial fixing members will remain in place, causing them to protrude from the spatial arrangement member, exacerbating the above-mentioned problem. In contrast, this configuration secures the spatial arrangement member to each sheathing board with adhesive, thereby avoiding the problem of roofing material damage caused by the axial fixing members.

[0018] In a sixth aspect of the present invention, in any one of the second to fifth aspects of the present invention, each of the plurality of roofing materials has an underwater engaging portion located at the underwater edge of each roofing material and having a recess that opens to the abovewater side on the underside of each roofing material, and an abovewater engaging portion located at the abovewater edge of each roofing material and having a recess that opens to the belowwater side on the upper surface of each roofing material, and the underwater engaging portion and the abovewater engaging portion of roofing materials adjacent to each other in the roof vertical direction engage with each other by meshing with each other of the recesses, thereby enabling connection in the roof vertical direction. Each of the multiple corner ridge covers is connected to its above-water edge and has an above-water engaging portion that engages with the above-water engaging portions of a pair of roof materials located on both sides of the corner ridge at the same level as the corner ridge cover so as to overlap from the inside of the recesses, and it is preferable that the above-water engaging portions of the pair of roof materials and the above-water engaging portions of each corner ridge cover that overlap the inside of the recesses are configured to engage with the inside of the recesses of the below-water engaging portions of a pair of roof materials located on the adjacent level above the water on the level on which the pair of roof materials are located.

[0019] With this configuration, the above-water side engaging portion of the roof material and the above-water side engaging portion of the corner ridge cover that engages with the inside of the recess are engaged with the inside of the recess of the below-water side engaging portion of the roof material located on the adjacent tier above the water on which the corner ridge cover is located, thereby simplifying the engaging structure for attaching the corner ridge cover to the roof material and reducing the number of parts.

[0020] In the seventh invention, as in the sixth invention, each of the multiple corner ridge covers is provided with a pair of fixing members for fixing and supporting the pair of roof materials located on both sides of the corner ridge at the same level as each corner ridge cover to the portion of the pair of sheathing boards that is above the waterline than the pair of roof materials, and one of the pair of fixing members engages with the above-water side engaging portion of one of the pair of roof materials and the above-water side engaging portion formed on the corner ridge cover in a state where both engaging portions overlap, thereby being fixed to one of the pair of sheathing boards, and the other of the pair of fixing members engages with the above-water side engaging portion of the other of the pair of roof materials and the above-water side engaging portion formed on the corner ridge cover in a state where both engaging portions overlap, thereby being fixed to the other of the pair of sheathing boards.

[0021] With this configuration, the corner ridge cover is fixed to each of the pair of sheathing boards with a pair of fixing members, preventing the corner ridge cover from swinging around the fixing points as a fulcrum when subjected to external forces such as wind. Furthermore, by engaging the above-water side engaging portion of the roof material and the above-water side engaging portion formed on the corner ridge cover with the fixing members while both engaging portions overlap, a single fixing member can be used to fix both the roof material and the corner ridge cover. This reduces the number of parts required to fix the roof material and corner ridge cover, and simplifies the fixing structure.

[0022] In the eighth invention, in any one of the first to seventh inventions, it is preferable that each of the multiple corner ridge covers has, in a plan view, a pair of side edges located on both sides of the corner ridge, and that the pair of side edges extend in the vertical direction of the roof on each of the sheathing boards on which they are located.

[0023] This configuration allows a pair of side edges of the corner ridge cover, located on either side of the corner ridge, to extend vertically along the roof on each sheathing board, resulting in a generally diamond-shaped overall corner ridge cover in a plan view, providing an aesthetically pleasing corner ridge structure. Furthermore, when each side edge of the corner ridge cover is formed to extend vertically along the roof, the overall corner ridge cover becomes larger (i.e., the area of the top surface of the corner ridge cover increases) compared to, for example, when the side edges are formed parallel to the extension direction of the corner ridge. Increasing the size of the corner ridge cover reduces the number of corner ridge covers installed, thereby reducing material costs and installation labor per unit area compared to, for example, when corner ridge covers are made smaller to improve strength. This leads to cost reductions in terms of labor hours and material costs. However, increasing the size of the corner ridge cover increases the frequency with which the corner ridge cover is used as scaffolding during roofing installation and increases the amount of snow that accumulates on the top surface of the corner ridge cover due to snowfall. Therefore, the configuration of the present invention is particularly useful for ensuring the corner ridge cover's deformation resistance against loads from its top surface.

[0024] In the ninth invention, in the eighth invention, it is preferable that the corner ridge covers each further include a water-stopping material attached to an area adjacent to each of the pair of side edges on the underside thereof and extending along each of the side edges.

[0025] With this configuration, rainwater flowing into the corner ridge cover from below the pair of side edges can be stopped by the water-stopping material arranged along each side edge. Furthermore, because the pair of side edges extend vertically along the roof on each sheathing board, the water-stopping position of the water-stopping material can be positioned farther away from the corner ridge than if the side edges extended parallel to the corner ridge. This prevents rainwater from reaching the corner ridge (the boundary between the pair of sheathing boards) and infiltrating into the building.

[0026] In the tenth invention, in the eighth invention, it is preferable that the corner ridge covers further include a water-stopping material attached to the above-water end of the underside of each of the corner ridge covers at a location corresponding to the corner ridge.

[0027] With this configuration, rainwater flowing toward the corner ridge along the water-side engaging portion of the corner ridge cover can be stopped by the water-stop material, thereby preventing the rainwater from entering the building from the corner ridge (the boundary between a pair of sheathing boards).

[0028] In the 11th invention, in the 8th invention, it is preferable that the corner ridge cover further comprises a water-stopping material attached to the upper surface of the above-water side engagement portion on both ends of the corner ridge or at the location corresponding to the corner ridge.

[0029] With this configuration, rainwater flowing toward the corner ridge along the water-side engaging portion of the corner ridge cover is stopped by the water-stopping material provided at both ends of the corner ridge, and rainwater that slips through the water-stopping material is stopped by the water-stopping material provided at the point corresponding to the corner ridge of the water-side engaging portion, thereby preventing the rainwater from entering the building through the corner ridge (the boundary between a pair of sheathing boards). [Effects of the Invention]

[0030] According to the present invention, a corner ridge structure is provided that can restrict deformation of the corner ridge cover toward its lower surface in the vertical direction. [Brief explanation of the drawings]

[0031] [Figure 1] 1 is an external perspective view showing a roof having a corner ridge structure according to an embodiment of the present invention. FIG. [Figure 2] FIG. 2 is a cross-sectional view taken along line II-II in FIG. [Figure 3] FIG. 2 is a longitudinal cross-sectional view showing the roof material along the longitudinal direction of the roof. [Figure 4] This is a perspective view showing the corner ridge cover from the top side (surface side). [Figure 5]This is an oblique view showing the corner ridge cover from the underside (rear side). [Figure 6] FIG. 6 is a cross-sectional view taken along line VI-VI in FIG. 4. [Figure 7] FIG. 7 is an enlarged view of part VII in FIG. [Figure 8] FIG. 8 is a cross-sectional view taken along line VIII-VIII in FIG. [Figure 9] FIG. 10 is an explanatory plan view for explaining the configuration of a spatial arrangement member. [Figure 10] 1 is an explanatory diagram for explaining a construction method for a roof including a corner ridge structure according to an embodiment of the present invention. [Figure 11] 1 is an explanatory diagram for explaining a construction method for a roof including a corner ridge structure according to an embodiment of the present invention. [Figure 12] 1 is an explanatory diagram for explaining a construction method for a roof including a corner ridge structure according to an embodiment of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0032] Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings.

[0033] [Overall configuration] 1 is an external perspective view showing a roof 1 equipped with a corner ridge structure 100 according to an embodiment of the present invention. This corner ridge structure 100 comprises multiple pairs of roofing materials 11 arranged in multiple rows in the vertical direction of the roof, with a corner ridge 6 sandwiched between each pair of roofing materials 11; multiple corner ridge covers 20 arranged to cover the upper side of the corner ridge 6 on each row of the multiple pairs of roofing materials 11; and multiple spatial arrangement members 30 arranged in the space behind each corner ridge cover 20.

[0034] The roof 1 includes two sloped roof sections 2, 3 arranged adjacent to each other with a ridge 6 in between. The two sloped roof sections 2, 3 are arranged so that their respective slope directions A1, A2 intersect at 90° to each other in a plan view. The slope directions A1, A2 of each sloped roof section 2, 3 correspond to the roof longitudinal direction of each sloped roof section 2, 3, and the direction perpendicular to the roof longitudinal direction corresponds to the roof lateral direction.

[0035] The pair of sheathing boards 4, 5 respectively constitute the roof underlayment materials of the sloped roof portions 2, 3. The pair of sheathing boards 4, 5 are supported from below by a plurality of rafters (not shown) that form the framework of the roof 1.

[0036] Each pair of roofing materials 11 on each tier consists of a one-side roofing material 111 placed on the top surface of one of the sheathing boards 4 and an other-side roofing material 112 placed on the top surface of the other sheathing board 5. The one-side roofing material 111 and the other-side roofing material 112 are each arranged to extend laterally across the roof on each of the sheathing boards 4, 5. In the following description, when there is no need to particularly distinguish between the one-side roofing material 111 and the other-side roofing material 112, they will simply be referred to as roofing material 11.

[0037] Each of the roof materials 11 is positioned so that one end in the roof lateral direction is located near the corner ridge 6 and the other end is located outside the corner ridge cover 20 in the roof lateral direction. The cover lower roof portion 11U (see Figure 2), which is the portion of each roof material 11 positioned below the corner ridge cover 20, functions as a reinforcing member that restricts deformation of each corner ridge cover 20 toward its lower surface in the vertical direction.

[0038] 2 is a cross-sectional view taken along line II-II in FIG. 1, and FIG. 3 is a vertical cross-sectional view showing the roof material along the vertical direction of the roof.

[0039] As shown in Figures 2 and 3, the roofing material 11 has a roofing material main body 11a extending laterally across the roof (perpendicular to the plane of the paper in each figure), an above-water side engaging portion 11b formed along the entire above-water side edge of the roofing material main body 11a, and an below-water side engaging portion 11c formed along the entire below-water side edge of the roofing material main body 11a.

[0040] The above-water side engaging portion 11b of the roofing material 11 is formed by bending the end of the roofing material 11 upward into a substantially U-shape so as to form a recess 11d that opens to the below-water side on the upper surface side of the roofing material main body 11a. That is, in this example, the above-water side engaging portion 11b is formed by a substantially U-shaped bent piece having the recess 11d.

[0041] The underwater engaging portion 11c of the roofing material 11 is formed by bending the end of the roofing material 11 downward into a substantially U-shape so as to form a recess 11e that opens above the water on the underside of the roofing material body 11a. That is, in this example, the underwater engaging portion 11c is formed by a substantially U-shaped bent piece having the recess 11e.

[0042] The roof materials 11 are connected to each other in the vertical direction of the roof by the recesses 11e of the below-water side engaging portions 11c of adjacent roof materials 11 meshing (engaging) with the recesses 11d of the above-water side engaging portions 11b (see Figure 2).

[0043] In this example, the recesses 11d, 11e of the belowwater engaging portion 11c and the abovewater engaging portion 11b are used not only to connect adjacent roof materials 11 together, as shown in Figure 2, but also to fix the corner ridge cover 20 together with the roof material 11 to each sheathing board 4, 5 using the fixing member 40 described later.

[0044] [Corner ridge cover configuration] Next, the corner ridge cover 20 will be described in detail with reference to Fig. 1 and Fig. 4 to Fig. 6. Fig. 4 is a perspective view of the corner ridge cover 20 as seen from the top side (front side), and Fig. 5 is a perspective view of the corner ridge cover 20 as seen from the bottom side (back side). Fig. 6 is a cross-sectional view taken along line VI-VI in Fig. 4.

[0045] As shown in Figure 1, the corner ridge cover 20 is arranged across a pair of roofing materials 11 (one-side roofing material 111 and the other-side roofing material 112) located on both sides of the corner ridge 6 in each row of multiple pairs of roofing materials 11. More specifically, the multiple corner ridge covers 20 are arranged so as to cover from above the boundary (edges on the boundary side) between the pair of roofing materials 11 located on both sides of the corner ridge 6 in the row on which each corner ridge cover 20 is located. Each corner ridge cover 20 is fixed to each sheathing board 4, 5 together with the pair of roofing materials 11 located on the same row as the corner ridge cover 20 by fixing members 40, which will be described later.

[0046] As shown in Figures 4 to 6, the corner ridge cover 20 has a cover main body portion 21, an above-water side engagement portion 22 provided along the above-water side edge of the cover main body portion 21, and an below-water side engagement portion 23 provided along the below-water side edge of the cover main body portion 21.

[0047] The cover main body 21 has a first cover plate 211 facing the upper surface of the one-side roof material 111, and a second cover plate 212 facing the upper surface of the other-side roof material 112. The first cover plate 211 and the second cover plate 212 are connected in a mountain shape with the intersecting line of their upper surfaces as the ridge line.

[0048] The above-water edge of the cover main body 21 is an L-shaped edge made up of the above-water edge of the first cover plate 211 and the above-water edge of the second cover plate 212, and is arranged line-symmetrically with respect to the ridge 6 (see Figure 1) in plan view. The below-water edge of the cover main body 21 is an L-shaped edge made up of the below-water edge of the first cover plate 211 and the below-water edge of the second cover plate 212, and is arranged line-symmetrically with respect to the ridge 6 in plan view.

[0049] In addition, the side edges 21a, 21b (in this example, these coincide with the side edges of the entire corner ridge cover 20) on both sides of the corner ridge 6 (see Figure 1) of the cover main body 21 extend in the vertical direction of the roof (i.e., in a direction parallel to the slope directions A1, A2 of each sloped roof section 2, 3) on the sheathing boards 4, 5 on which they are located. One side edge 21a connects one end of the above-water side edge and one end of the below-water side edge of the cover main body 21. The other side edge 21b connects the other ends of the above-water side edge and one end of the below-water side edge of the cover main body 21.

[0050] The abovewater side engaging portion 22 is formed along the entire abovewater side edge of the cover main body 21. Specifically, the abovewater side engaging portion 22 has a first engaging portion 22a (see FIG. 4) formed along the abovewater side edge of the first cover plate 211, and a second engaging portion 22b formed along the abovewater side edge of the second cover plate 212. Each engaging portion 22a, 22b is formed by bending the end of the corner ridge cover 20 upward in a substantially U-shape so as to form a recess 22c on the upper surface side of the cover main body 21 that opens to the belowwater side of each sloped roof portion 2, 3. That is, in this example, the abovewater side engaging portion 22 is formed by a substantially U-shaped bent piece having the recess 22c.

[0051] As shown in Figure 2, when the corner ridge cover 20 is assembled to the top of the roofing material 11, the abovewater-side engaging portion 22 engages so as to overlap with the inside (inside the recess) of the recess 11d of the abovewater-side engaging portion 11b of the roofing material 11. Then, as shown by the two-dot chain line in Figure 2, the underwater-side engaging portion 11c of the next roofing material 11 adjacent to the abovewater side engages from the outside (from the underwater side) with the abovewater-side engaging portion 22 of the corner ridge cover 20 and the abovewater-side engaging portion 11b of the roofing material in this engaged state, and the underwater-side engaging portion 23 of the corner ridge cover 20 located on the same level as the roofing material 11 engages with the underwater-side engaging portion 11c of this next roofing material 11 from the outside of the recess.

[0052] 5 and 6, the underwater engagement portion 23 of this corner ridge cover 20 is formed along the entire underwater edge of the cover main body 21. Specifically, the underwater engagement portion 23 has a first engagement portion 23a formed along the underwater edge of the first cover plate 211 and a second engagement portion 23b formed along the underwater edge of the second cover plate 212. Each engagement portion 23a, 23b is formed by bending the end of the corner ridge cover 20 downward in a substantially U-shape to form a recess 23c on the underside of the cover main body 21 that opens to the abovewater side of each sloped roof section 2, 3 (see FIG. 1). That is, in this example, the underwater engagement portion 23 is formed by a substantially U-shaped bent piece having the recess 23c.

[0053] [Configuration of water-stopping material provided on corner ridge cover] 5 and 6, a pair of first water-stopping materials 46 and one second water-stopping material 47 are attached to the corner ridge cover 20. These first water-stopping materials 46 and second water-stopping materials 47 have the function of preventing rainwater and the like from infiltrating into the corner ridge 6 when the corner ridge cover 20 is assembled on the roof material 11 (the state shown in FIG. 1). The first water-stopping materials 46 and second water-stopping materials 47 are fixed to the surface of the corner ridge cover 20 via an adhesive or the like.

[0054] Specifically, each of the pair of first water-stopping materials 46 extends from the underside of the cover main body 21 of the corner ridge cover 20 to the upper surface of the above-water-side engagement part 22. The first water-stopping material 46 has a lower-side water-stopping part 46a (see FIG. 5) arranged along a pair of side edges 21a, 21b on the underside of the cover main body 21 of the corner ridge cover 20, an upper-side water-stopping part 46b (see FIG. 4) arranged on the upper surface of the above-water-side engagement part 22 of the corner ridge cover 20, and a connecting part 46c with a U-shaped cross section that connects the lower-side water-stopping part 46a and the upper-side water-stopping part 46b. The lower-side water-stopping part 46a extends along the entire underside of the cover main body 21 along parts adjacent to the edges 21a, 21b. When the corner ridge cover 20 is assembled (as shown in Figure 1), the lower surface-side waterproofing portion 46a is sandwiched between the lower surface of the cover main body 21 and the upper surface of the roof material 11, and comes into close contact with these surfaces. When the corner ridge cover 20 is assembled, the upper surface-side waterproofing portion 46b is sandwiched between the inner surface of the recess of the above-water side engaging portion 11b of the roof material 11 and the upper surface of the above-water side engaging portion 22 of the corner ridge cover 20, and comes into close contact with these surfaces.

[0055] The second water-stopping material 47 is provided at the above-water end of the connecting boundary (the location corresponding to the corner ridge 6) between the first cover plate portion 211 and the second cover plate portion 212 of the corner ridge cover 20. In this example, the second water-stopping material 47 is provided from the underside of the cover main body portion 21 to the upper side of the above-water engaging portion 22. Specifically, the second water-stopping material 47 has a lower-surface-side water-stopping portion 47a (see FIG. 5) that covers the above-water end of the location corresponding to the corner ridge 6 on the underside of the cover main body portion 21, an upper-surface-side water-stopping portion 47b (see FIG. 4) that is substantially L-shaped in plan view and covers the center of the upper surface of the above-water engaging portion 22, and a connecting portion 47c that has a U-shaped cross section that connects these two water-stopping portions 47a, 47b. When the corner ridge cover 20 is assembled (as shown in Figure 1), the lower surface-side waterproofing portion 47a is sandwiched between the lower surface of the cover main body 21 and the upper surfaces of the pair of roof materials 11 on both sides of the corner ridge 6, and comes into close contact with each of these surfaces. When the corner ridge cover 20 is assembled, the upper surface-side waterproofing portion 47b is sandwiched between the inner surfaces of the recesses of the above-water side engaging portions 11b of the pair of roof materials 11 on both sides of the corner ridge 6 and the upper surfaces of the above-water side engaging portions 22 of the corner ridge cover 20, and comes into close contact with each of these surfaces.

[0056] [Configuration of fixing parts] Next, the pair of fixing members 40 will be described with reference to Figures 1, 2 and 7. Figure 7 is an enlarged cross-sectional view of part VII in Figure 2.

[0057] As shown in Figure 1, each corner ridge cover 20 is fixed to each sheathing board 4, 5 together with a pair of roofing materials 112 located on the same level as each corner ridge cover 20 by a pair of fixing members 40. The fixing members 40 are not limited to being used to fix the corner ridge cover 20 and the roofing material 11 together, but can also be used to fix only the roofing material 11 (see Figure 11 described below).

[0058] As shown in Figure 7, each fixing member 40 has a rectangular fixed plate portion 41 that is fixed to each sheathing board 4, 5, an engaging plate portion 42 that is located below the waterline of the fixed plate portion 41 and at a predetermined height from the top surface of the sheathing boards 4, 5, an engaging piece 44 that is folded back in a U-shape from the tip of the engaging plate portion 42 to its underside to form an engaging groove 43 that opens above the waterline between the engaging plate portion 42 and the engaging plate portion 42, and a connecting plate portion 45 that connects the above-water edge of the engaging plate portion 42 and the below-water edge of the fixed plate portion 41.

[0059] One fixing member 40 engages with the above-water side engaging portion 11b of the one-side roof material 111 (see Figure 1) and the above-water side engaging portion 22 of the corner ridge cover 20, with both engaging portions 11b, 22 overlapping. Specifically, the engaging groove 43 of one fixing member 40 engages with both engaging portions 11b, 22 from the outside (below-water side) (similar to the other fixing member 40 shown in Figure 7). One fixing member 40 is then fixed by a fastener 49 to a portion of the top surface of the sheathing board 4 above the one-side roof material 111 to be fixed thereto.

[0060] The other fixing member 40 engages with the above-water engaging portion 11b of the other-side roof material 112 (see Figure 2) and the above-water engaging portion 22 of the corner ridge cover 20, with both engaging portions 11b, 22 overlapping. Specifically, the engaging groove 43 of the other fixing member 40 engages with both engaging portions 11b, 22 from the outside (below-water side) (see Figure 7). The other fixing member 40 is then fixed by fasteners 49 to a portion of the top surface of the sheathing board 5 above the other-side roof material 112 to be fixed thereto.

[0061] [Details of spatial arrangement components] Next, spatial arrangement member 30 will be described in detail with reference to Figures 1, 2, 8, and 9. Figure 8 is a cross-sectional view taken along line VIII-VIII in Figure 1. Figure 9 is an explanatory plan view for explaining the configuration of spatial arrangement member 30 in Figure 1.

[0062] Each of the multiple spatial arrangement members 30 is arranged below (on the back side of) the cover lower roof portion 11U located on the back side of the multiple corner ridge covers 20 (see FIG. 2). When viewed from the vertical direction of the sheathing boards 4, 5, each spatial arrangement member 30 is arranged so as to overlap with the corner ridge cover 20 provided on the same row (see FIG. 1). In this example, each spatial arrangement member 30 is arranged so that a portion of it overlaps with the corner ridge cover 20, but this is not limited to this, and each spatial arrangement member 30 may be arranged so that the entirety of it overlaps with the corner ridge cover 20. Each spatial arrangement member 30 functions as a reinforcing member together with the cover lower roof portion 11U of the roof material 11 (see FIG. 2).

[0063] Specifically, as shown in Fig. 1, two spatial arrangement members 30 are arranged for each corner ridge cover 20. One spatial arrangement member 30 is arranged so as to be sandwiched between one sheathing board 4 and the cover-underside roof portion 11U (see Fig. 2) of the roof material 111 on one side, and the other spatial arrangement member 30 is arranged so as to be sandwiched between the other sheathing board 5 and the cover-underside roof portion 11U (see Fig. 2) of the roof material 112 on the other side.

[0064] In this example, each spatial arrangement member 30 is formed in the shape of a trapezoidal plate, and is made of, for example, semi-rigid or rigid urethane foam.

[0065] Specifically, as shown in Figures 2 and 9, each spatial arrangement member 30 has a lower surface 30a (see Figure 2), an upper surface 30b, a corner ridge side end face 30c (see Figure 9) located on the corner ridge 6 side, an anti-corner ridge side end face 30d located on the opposite side from the corner ridge 6 side, an abovewater side end face 30e, and an belowwater side end face 30f.

[0066] As shown in Fig. 2, each spatial arrangement member 30 is arranged so that its lower surface 30a abuts against the upper surface of each of the sheathing boards 4, 5 (only sheathing board 5 is shown in Fig. 2), and its upper surface 30b abuts against the lower surface of the roof material 11 arranged on the same level as each spatial arrangement member 30. In this example, the lower surface 30a of each spatial arrangement member 30 is fixed to the upper surface of each of the sheathing boards 4, 5 with an adhesive.

[0067] 8, a first recess 30g for accommodating the head of the fastener 49 of the fixing member 40 is formed in the lower surface 30a of the spatial arrangement member 30 in a portion that covers the head of the fastener 49 of the fixing member 40. Furthermore, a second recess 30h for accommodating the fixed plate portion 41 of the fixing member 40 is formed continuously on the above-water side of the first recess 30g.

[0068] As shown in Figure 9, both the above-water end face 30e and the below-water end face 30f are formed to extend in the horizontal direction of the roof on each sheathing board 4, 5 on which each spatial arrangement member 30 is arranged. The below-water end face 30f is arranged so as to abut against or with a small gap between it and the above-water end of the roof material 11 arranged on the adjacent below-water stage. The distance in the vertical direction of the roof between the above-water end face 30e and the below-water end face 30f is set to, for example, about 50% to 60% of the dimension of the roof material 11 in the vertical direction of the roof.

[0069] The corner ridge side end face 30c is formed to extend parallel to the extension direction of the corner ridge 6 (the vertical direction in FIG. 9). The corner ridge side end face 30c is located at the same position as the corner ridge 6 or at a position slightly spaced apart from the corner ridge 6 in a plan view.

[0070] The anti-corner ridge side end face 30d is formed to extend in the vertical direction of the roof on each sheathing board 4, 5. The anti-corner ridge side end face 30d is located outward in the horizontal direction of the roof than the side edges 21a, 21b of the corner ridge cover 20.

[0071] [Assembly procedure] 10 to 12 are explanatory diagrams for explaining a method of constructing a roof 1 including the above-mentioned corner ridge structure 100. When constructing this roof 1, the roofing materials 11 and corner ridge covers 20 are placed in order, one layer at a time, from the belowwater side toward the abovewater side. For ease of understanding, in Figs. 10 to 12, the components to be constructed at each construction stage are indicated by thick lines.

[0072] Specifically, as shown in Figure 10, first, the worker places a pair of spatial arrangement members 30 on the upper surface of each sheathing board 4, 5 adjacent to the topmost roof material 11 that has already been installed, and then fixes the pair of spatial arrangement members 30 to each sheathing board 4, 5 with adhesive.

[0073] After this fixing operation is completed, as shown in Figure 11, the worker places the next pair of roofing materials 11 so as to cover the upper sides of the pair of spatial arrangement members 30, and fixes the pair of roofing materials 11 to each of the sheathing boards 4, 5 using a pair of fixing members 40. In the work of placing the pair of roofing materials 11, the underwater side engaging portion 11c of each roofing material 11 is engaged with the abovewater side engaging portion 11b of the roofing material 11 that has already been installed from the belowwater side (see arrow K1 in Figure 11). In addition, in the work of fixing the pair of roofing materials 11 using the pair of fixing members 40, the engaging pieces 44 (see Figure 7) of each fixing member 40 are engaged with the abovewater side engaging portion 11b of the pair of roofing materials 11 from the belowwater side (see arrow K2 in Figure 11), so that the pair of roofing materials 11 are supported by each fixing member 40 so as to hang against the roof slope, and then each fixing member 40 is fixed to each of the sheathing boards 4, 5 with fasteners 49.

[0074] After the installation of the next pair of roofing materials 11 is completed, as shown in Fig. 12, a corner ridge cover 20 is placed to cover the boundary between the pair of roofing materials 11, and the corner ridge cover 20 is fixed to the sheathing boards 4, 5 together with the pair of roofing materials 11 using a pair of fixing members 40. When placing the corner ridge cover 20, the underwater engagement portion 23 of the corner ridge cover 20 is engaged with the underwater engagement portion 11c (see Figs. 2 and 3) of the pair of roofing materials 11 on the same tier as the corner ridge cover 20 so that they overlap from the outside of the recess (from the direction K3 in Fig. 12), and the abovewater engagement portion 22 of the corner ridge cover 20 is engaged with the abovewater engagement portion 11b of the pair of roofing materials 11 on the same tier so that they overlap from the inside of the recess (from the direction K4 in Fig. 12). Then, in the fixing work after the placement work of the corner ridge cover 20 is completed, the engagement pieces 44 (see Figure 7) of the pair of fixing members 40 are engaged with the above-water side engagement portion 11b of the roof material 11 and the above-water side engagement portion 22 of the corner ridge cover 20 in a state where these engagement portions 11b, 22 overlap. Then, after this engagement work is completed, each fixing member 40 is fixed to each sheathing board 4, 5 with a fastener 49. Thereafter, the series of work steps shown in Figures 10 to 12 described above are repeated.

[0075] (Action and effect) As described above, in the corner ridge structure 100 of this embodiment, reinforcing members (in this example, the cover lower roof portion 11U and the spatial arrangement member 30) are provided between the multiple corner ridge covers 20 and each of the sheathing boards 4, 5 to restrict deformation of each corner ridge cover 20 toward its lower surface in the vertical direction.

[0076] This configuration restricts deformation of the corner cover 20 downward in the vertical direction by providing reinforcing members between the corner cover 20 and each sheathing board 4, 5. Therefore, deformation of the corner cover 20 due to, for example, treading loads when the top surface of the corner cover 20 is used as scaffolding during roof 1 construction, or snow loads acting on the top surface of the corner cover 20, can be prevented.

[0077] Specifically, the reinforcing member includes a cover lower roof portion 11U, which is a portion of each roof material 11 that is arranged below the corner ridge cover 20.

[0078] With this configuration, the cover lower roof portion 11U of the roof material 11 is interposed as a reinforcing member between the corner ridge cover 20 and each sheathing board 4, 5, thereby restricting deformation of the corner ridge cover 20 downward in the vertical direction. That is, with this configuration, the edge of the roof material 11 is not formed away from the corner ridge 6 as in the conventional case, but is extended to the vicinity of the corner ridge 6 (by positioning one end of the roof material 11 near the corner ridge 6), making it possible to construct a multi-layer structure using the corner ridge cover 20 and the roof material 11. This makes it possible to restrict deformation of the corner ridge cover 20 downward in the vertical direction.

[0079] Furthermore, in this embodiment, the corner ridge structure 100 includes a plurality of spatial arrangement members 30 arranged in the spaces between the pair of sheathing boards 4, 5 and each of the plurality of pairs of roof materials 11. When viewed from the vertical direction of the sheathing boards 4, 5, each of the plurality of spatial arrangement members 30 is arranged so that at least a portion of the spatial arrangement members 30 overlaps with the corner ridge cover 20 provided on the same level as the respective spatial arrangement member 30, and these plurality of spatial arrangement members 30 function as the reinforcing members.

[0080] According to this configuration, by disposing the spatial arrangement member 30 in the space between the pair of sheathing boards 4, 5 and the roof material 11 above them, even if the corner ridge cover 20 elastically deforms downward due to a load from above and presses down on the roof material 11, the deformation of the roof material 11 is restricted by the spatial arrangement member 30. Therefore, it is possible to restrict the deformation of the corner ridge cover 20 downward in the vertical direction.

[0081] In this embodiment, the multiple spatial arrangement members 30 are arranged so that their respective lower surfaces abut the upper surfaces of the respective sheathing boards 4, 5, and so that their respective upper surfaces abut the lower surfaces of the roofing materials 11 arranged on the same level as the respective spatial arrangement members 30.

[0082] With this configuration, the spatial arrangement members 30 are arranged without any gaps in the height direction (direction perpendicular to the sheathing boards 4, 5) between each sheathing board 4, 5 and the roof material 11 above it. Therefore, when the corner ridge cover 20 elastically deforms downward due to a load from above and presses down on the roof material 11, the deformation of the roof material 11 can be reliably restricted by the spatial arrangement members 30. Therefore, the deformation of the corner ridge cover 20 downward in the vertical direction can be restricted.

[0083] In this embodiment, the plurality of spatial arrangement members 30 are fixed to the upper surfaces of the sheathing boards 4 and 5 with adhesive.

[0084] This configuration prevents damage to the roof material 11 when a load acting from above on the corner ridge cover 20 causes the roof material 11 to deform and press down on the spatial arrangement member 30. In other words, if axial fixing members such as bolts or nails were used to secure the spatial arrangement member 30, when the roof material 11 deforms and presses down on the spatial arrangement member 30, the spatial arrangement member 30 would be compressed and deformed, but the axial fixing members would remain in place, causing the axial fixing members to protrude from the spatial arrangement member 30, which could result in the roof material 11 coming into contact with the axial fixing members and being damaged. In contrast, in this embodiment, the spatial arrangement members 30 are fixed to the sheathing boards 4, 5 with adhesive, thereby avoiding the problem of damage to the roof material 11 caused by the axial fixing members.

[0085] In addition, in this embodiment, each corner ridge cover 20 has an above-water side engaging portion 22 connected to its above-water side edge portion and engaging with the above-water side engaging portions 11b of a pair of roof materials 11 located on both sides of the corner ridge 6 at the same level as the corner ridge cover 20 so as to overlap from the inside of their recesses, and the above-water side engaging portions 11b of the pair of roof materials 11 and the above-water side engaging portions 22 of each corner ridge cover 20 overlapping the inside of their recesses are configured to engage with the inside of the recesses of the below-water side engaging portions 11c of a pair of roof materials 11 located on the adjacent level above the water side of the level on which the pair of roof materials 11 are located (see Figure 7).

[0086] According to this configuration, the above-water side engagement portion 11b of the roof material 11 and the above-water side engagement portion 22 of the corner ridge cover 20, which engages with the inside of its recess, are engaged with the inside of the recess of the below-water side engagement portion 11c of the roof material 11 arranged on the adjacent above-water level, thereby simplifying the engagement structure for attaching the corner ridge cover 20 to the roof material 11 and reducing the number of parts.

[0087] Furthermore, in this embodiment, the corner ridge structure 100 is equipped with a pair of fixing members 40 for fixing and supporting each corner ridge cover 20, together with a pair of roofing materials 11 located on both sides of the corner ridge 6 at the same level as each corner ridge cover 20, to portions of the pair of sheathing boards 4, 5 above the pair of roofing materials 11. One fixing member 40 is fixed to one sheathing board 4 by engaging with the above-water-side engaging portion 11b of one roofing material 111 and the above-water-side engaging portion 22 of the corner ridge cover 20 in a state where both engaging portions 11b, 22 overlap. The other fixing member 40 is fixed to the other sheathing board 5 by engaging with the above-water-side engaging portion 11b of the other roofing material 112 and the above-water-side engaging portion 22 of the corner ridge cover 20 in a state where both engaging portions 11b, 22 overlap.

[0088] With this configuration, the corner ridge cover 20 is fixed to each of the pair of sheathing boards 4, 5 with a pair of fixing members 40, which prevents the corner ridge cover 20 from swinging around the fixing points as a fulcrum when subjected to external forces such as wind. Furthermore, by engaging the above-water-side engaging portion 11b of the roof material 11 and the above-water-side engaging portion 22 of the corner ridge cover 20 with the fixing member 40 while these engaging portions 11b, 22 overlap, a single fixing member 40 can be used to fix both the roof material 11 and the corner ridge cover 20. This reduces the number of parts required to fix the roof material 11 and the corner ridge cover 20 and simplifies the fixing structure.

[0089] Each of the multiple corner ridge covers 20 has a pair of side edges 21a, 21b located on both sides of the corner ridge 6, and the pair of side edges 21a, 21b extend in the vertical direction of the roof on each of the sheathing boards 4, 5 on which they are located.

[0090] This configuration provides an aesthetically pleasing corner ridge structure, with the entire corner ridge cover 20 having a generally diamond shape. Furthermore, when the side edges 21a, 21b of the corner ridge cover 20 on both sides of the corner ridge 6 are formed to extend in the vertical direction of the roof, the overall corner ridge cover 20 becomes larger (i.e., the area of the top surface of the corner ridge cover 20 increases) compared to, for example, when the side edges 21a, 21b are formed parallel to the extension direction of the corner ridge 6. Increasing the size of the corner ridge cover 20 reduces the number of corner ridge covers 20 installed, thereby reducing material costs and installation labor per unit area compared to, for example, when corner ridge covers 20 are formed small for increased strength. This leads to cost reductions in terms of labor hours and material costs. However, increasing the size of the corner ridge cover 20 increases the frequency with which the corner ridge cover 20 is used as scaffolding during the installation of the roofing material 11 and increases the amount of snow that accumulates on the top surface of the corner ridge cover 20 due to snowfall. Therefore, for a corner ridge cover 20 having such a shape, it is particularly important to ensure resistance to deformation caused by a load from the upper surface side, and the configuration in which the reinforcing member described above is provided is particularly useful.

[0091] In addition, in this embodiment, a first water-stopping material 46 (more specifically, a lower surface side water-stopping portion 46a of the first water-stopping material 46) extending along each edge is attached to the area adjacent to the pair of side edges 21a, 21b on the underside of the corner ridge cover 20.

[0092] With this configuration, rainwater that attempts to flow into the cover from the underside of the pair of side edges 21a, 21b of the corner ridge cover 20 can be stopped by the first water-stopping materials 46 arranged along each of the side edges 21a, 21b. Furthermore, because the pair of side edges 21a, 21b extend in the vertical direction of the roof, the water-stopping position of the first water-stopping materials 46 can be positioned farther away from the corner ridge 6 than, for example, when each of the side edges 21a, 21b extends parallel to the corner ridge 6. This prevents rainwater from reaching the corner ridge 6 (the boundary between the pair of sheathing boards 4, 5) and infiltrating into the building.

[0093] In addition, in this embodiment, a second water-stopping material 47 (more specifically, the underside water-stopping portion 47a of the second water-stopping material 47) is attached to the water-side end portion of the underside of each corner ridge cover 20 at a location corresponding to the corner ridge 6.

[0094] With this configuration, rainwater flowing toward the corner ridge 6 along the water-side engaging portion 22 of the corner ridge cover 20 can be stopped by the water-stop material 47. Therefore, the rainwater can be prevented from entering the building through the corner ridge 6 (the boundary between the pair of sheathing boards 4, 5).

[0095] In addition, in this embodiment, an upper surface side water-stopping portion 46b of the first water-stopping material 46 is attached to both ends of the upper surface of the above-water side engagement portion 22 of the corner ridge cover 20 that sandwich the corner ridge 6, and an upper surface side water-stopping portion 47b of the water-stopping material 47 is attached to the location on the upper surface of the above-water side engagement portion 22 that corresponds to the corner ridge 6.

[0096] With this configuration, rainwater flowing along the water-side engagement portion 22 of the corner ridge cover 20 toward the corner ridge 6 is stopped by the upper water-stopping portion 46b of the first water-stopping material 46 provided at both ends sandwiching the corner ridge 6, and rainwater that slips through the first water-stopping material 46 is stopped by the upper water-stopping portion 47b of the water-stopping material 47 provided at a position corresponding to the corner ridge 6 of the water-side engagement portion 22, thereby preventing the rainwater from entering the building through the corner ridge 6 (the boundary position between a pair of sheathing boards 4, 5).

[0097] The specific embodiments described above mainly include inventions having the following configurations.

[0098] The first invention comprises multiple pairs of roofing materials arranged on a pair of sheathing boards located on either side of a corner ridge, with pairs of roofing materials extending laterally on both sides of the corner ridge and arranged in multiple rows in the vertical direction of the roof; multiple corner ridge covers arranged across the pairs of roofing materials in each row of the multiple pairs of roofing materials; and reinforcing members arranged between the multiple corner ridge covers and each sheathing board to restrict deformation of each corner ridge cover toward its vertical underside.

[0099] In the second invention, in the first invention, each of the pair of roof materials has one end in the horizontal direction of the roof located near the corner ridge and the other end located further outward in the horizontal direction of the roof than each corner ridge cover, and the corner ridge cover is arranged to cover from above the boundary position of the pair of roof materials at the step on which the corner ridge cover is located, and it is preferable that the reinforcing member includes a cover lower roof portion, which is the portion arranged below the corner ridge cover of each of the pair of roof materials.

[0100] In a third invention, as in the second invention, a plurality of spatial arrangement members are provided which are arranged in the space between the pair of sheathing boards and each of the plurality of pairs of roof materials, and each of the plurality of spatial arrangement members is arranged so that, when viewed from the vertical direction of the sheathing boards on which each spatial arrangement member is arranged, at least a portion of the spatial arrangement members overlaps with the corner ridge cover which is provided on the same level as each of the spatial arrangement members, and it is preferable that the reinforcing member is constituted by the roof portion under the cover of the plurality of pairs of roof materials and the plurality of spatial arrangement members.

[0101] In the fourth invention, in the third invention, it is preferable that the plurality of spatial arrangement members are arranged so that their respective lower surfaces abut the upper surfaces of the respective sheathing boards and their respective upper surfaces abut the lower surfaces of the roofing materials arranged at the same level as the respective spatial arrangement members.

[0102] According to a fifth aspect of the present invention, in the third aspect, it is preferable that the plurality of spatial arrangement members are fixed to the upper surface of each of the sheathing boards with an adhesive.

[0103] In a sixth aspect of the present invention, in any one of the second to fifth aspects of the present invention, each of the plurality of roofing materials has an underwater engaging portion located at the underwater edge of each roofing material and having a recess that opens to the abovewater side on the underside of each roofing material, and an abovewater engaging portion located at the abovewater edge of each roofing material and having a recess that opens to the belowwater side on the upper surface of each roofing material, and the underwater engaging portion and the abovewater engaging portion of roofing materials adjacent to each other in the roof vertical direction engage with each other by meshing with each other of the recesses, thereby enabling connection in the roof vertical direction. Each of the multiple corner ridge covers is connected to its above-water edge and has an above-water engaging portion that engages with the above-water engaging portions of a pair of roof materials located on both sides of the corner ridge at the same level as the corner ridge cover so as to overlap from the inside of the recesses, and it is preferable that the above-water engaging portions of the pair of roof materials and the above-water engaging portions of each corner ridge cover that overlap the inside of the recesses are configured to engage with the inside of the recesses of the below-water engaging portions of a pair of roof materials located on the adjacent level above the water on the level on which the pair of roof materials are located.

[0104] In the seventh invention, as in the sixth invention, each of the multiple corner ridge covers is provided with a pair of fixing members for fixing and supporting the pair of roof materials located on both sides of the corner ridge at the same level as each corner ridge cover to the portion of the pair of sheathing boards that is above the waterline than the pair of roof materials, and one of the pair of fixing members engages with the above-water side engaging portion of one of the pair of roof materials and the above-water side engaging portion formed on the corner ridge cover in a state where both engaging portions overlap, thereby being fixed to one of the pair of sheathing boards, and the other of the pair of fixing members engages with the above-water side engaging portion of the other of the pair of roof materials and the above-water side engaging portion formed on the corner ridge cover in a state where both engaging portions overlap, thereby being fixed to the other of the pair of sheathing boards.

[0105] In the eighth invention, in any one of the first to seventh inventions, each of the multiple corner ridge covers has, in a plan view, a pair of side edges located on both sides of the corner ridge, and it is preferable that the pair of side edges extend in the vertical direction of the roof on each of the sheathing boards on which they are located.

[0106] In the ninth invention, in the eighth invention, it is preferable that the corner ridge covers each further include a water-stopping material attached to an area adjacent to each of the pair of side edges on the underside thereof and extending along each of the side edges.

[0107] In the tenth invention, in the eighth invention, it is preferable that the corner ridge covers further include a water-stopping material attached to the above-water end of the underside of each of the corner ridge covers at a location corresponding to the corner ridge.

[0108] In the 11th invention, in the 8th invention, it is preferable that the corner ridge cover further comprises a water-stopping material attached to the upper surface of the above-water side engagement portion on both ends of the corner ridge or at the location corresponding to the corner ridge.

[0109] (Other embodiments) The corner ridge structure 100 according to the embodiment of the present invention has been described above, but the present invention is not limited to this, and the following embodiment can be adopted, for example.

[0110] (1) In the above embodiment, the reinforcing member is composed of the spatial arrangement member 30 and the cover lower roof portion 11U of the roof material 11 (see Figure 2), but this is not limited to this and may be composed of, for example, either the spatial arrangement member 30 or the roof material 11.

[0111] (2) In the above embodiment, an example was described in which one end of the roof material 11 in the lateral direction of the roof is located near the corner ridge 6, but this is not limited to this, and the roof material 11 may be located near the side edges 21a, 21b of the corner ridge cover 20. In this case, the roof material 11 does not function as a reinforcing member because it does not fit under the corner ridge cover 20, but for example, a spatial arrangement member acting as a reinforcing member may be placed in the space below the corner ridge cover 20. In this case, it is preferable that the spatial arrangement member be placed on each sheathing board 4, 5 so as to abut against the underside of the corner ridge cover 20.

[0112] (3) In the above embodiment, the spatial arrangement member 30 is arranged so that a portion thereof overlaps with the corner ridge cover 20 provided at the same level as the spatial arrangement member 30 when viewed from the vertical direction of each sheathing board 4, 5. However, this is not limited to this, and the entire spatial arrangement member 30 may be arranged so as to overlap with the corner ridge cover 20.

[0113] (4) Furthermore, in the above embodiment, water-stopping materials (the upper surface side water-stopping portion 46b of the first water-stopping material 46 and the upper surface side water-stopping portion 47b of the water-stopping material 47) are arranged at both ends of the upper surface of the above-water side engagement portion 22 of the corner ridge cover 20 that sandwich the corner ridge 6 and at the location corresponding to the corner ridge 6, but this is not limited to this, and water-stopping materials may be arranged at only one of the locations.

[0114] (5) Furthermore, in the above embodiment, the lower surface side water-stopping portion 46a and the upper surface side water-stopping portion 46b are integrally formed by the first water-stopping material 46, but this is not limited to this, and the lower surface side water-stopping portion 46a and the upper surface side water-stopping portion 46b may be formed as separate bodies.

[0115] (6) In the above embodiment, the reinforcing member is configured to suppress deformation due to a load acting from the upper surface of the corner ridge cover 20, but this is not limited thereto, and the reinforcing member may also suppress deformation due to deterioration of the corner ridge cover 20 over time or deformation due to sunlight, etc. Restricting such deformation improves the appearance of the corner ridge cover 20. [Explanation of symbols]

[0116] A1: Slope direction (vertical direction of roof) A2: Slope direction (vertical direction of roof) 1: Roof 4: Field board 5: Field board 6: Corner ridge 11: Roofing materials 11U: Lower roof part of cover 11a: Roofing material body 11b: Above water side engaging part 11c: Lower side engagement part 11d: recess 11e: recess 20: Corner ridge cover 21a: Side edge 21b: Side edge 22: Above water side engaging part 22c: Recess 23: Lower side engagement part 23c: recess 30: Spatial arrangement component 30a: Bottom surface 30b:Top surface 40: Fixing member 46: First waterproof material 47: Second waterproofing material 49: Fastener 100: Corner ridge structure

Claims

1. A plurality of pairs of roofing materials are arranged on a pair of sheathing boards located on both sides of a corner ridge, and the pairs of roofing materials extend in the horizontal direction of the roof on both sides of the corner ridge, and are arranged in multiple stages in the vertical direction of the roof; A plurality of corner covers arranged across the pair of roof materials at each stage of the plurality of pairs of roof materials; A corner ridge structure is provided with reinforcing members respectively arranged between the plurality of corner ridge covers and each of the sheathing boards to restrict deformation of each corner ridge cover toward its lower surface in the vertical direction.

2. In the corner ridge structure according to claim 1, Each of the pair of roof materials has one end in the roof width direction located near the corner ridge and the other end located outside the corner ridge cover in the roof width direction, The corner cover is arranged to cover from above the boundary position between the pair of roof materials at the step where the corner cover is located, A corner ridge structure in which the reinforcing member includes a cover lower roof portion, which is a portion arranged below the corner ridge cover of each of the pair of roof materials.

3. In the corner ridge structure according to claim 2, a plurality of space arrangement members disposed in the spaces between the pair of sheathing boards and each of the plurality of pairs of roofing materials; Each of the plurality of spatial arrangement members is arranged so that, when viewed from the vertical direction of the sheathing board on which each of the spatial arrangement members is arranged, at least a portion of the spatial arrangement members overlaps with the corner ridge cover provided on the same level as each of the spatial arrangement members, The reinforcing member is a corner ridge structure composed of the cover lower roof portions of the plurality of pairs of roof materials and the plurality of spatial arrangement members.

4. In the corner ridge structure according to claim 3, The plurality of spatial arrangement members are arranged so that their respective lower surfaces abut the upper surfaces of the sheathing boards and their respective upper surfaces abut the lower surfaces of the roof materials arranged at the same level as the respective spatial arrangement members.

5. In the corner ridge structure according to claim 3, A corner ridge structure in which each of the plurality of spatial arrangement members is fixed to the upper surface of each of the sheathing boards with an adhesive.

6. In the corner ridge structure according to any one of claims 2 to 5, Each of the roofing materials is an underwater engaging portion located at the underwater edge of each roofing material and having a recess that opens to the abovewater side on the underside of each roofing material; The roofing materials are constructed so that they can be connected in the vertical direction of the roof by engaging the underwater side engaging parts with the abovewater side engaging parts of adjacent roofing materials in the vertical direction of the roof through the meshing of the recesses. Each of the multiple corner ridge covers is connected to its above-water edge and has an above-water side engaging portion that engages with the above-water side engaging portions of a pair of roof materials located on both sides of the corner ridge at the same level as the corner ridge cover so as to overlap from the inside of their recesses, and the above-water side engaging portions of the pair of roof materials and the above-water side engaging portions of each corner ridge cover that overlap the inside of their recesses are configured to engage with the inside of the recesses of the below-water side engaging portions of a pair of roof materials located on the adjacent level above the water on the level on which the pair of roof materials are located.

7. The corner ridge structure according to claim 6, The roofing material is then fixed to the roofing material on both sides of the corner ridge at the same level as the corner ridge cover, and the roofing material is fixed to the roofing material on the opposite side of the corner ridge at the same level as the corner ridge cover. One of the pair of fixing members is engaged with the above-water side engaging portion of one of the pair of roof materials and the above-water side engaging portion formed on the corner ridge cover in a state where both engaging portions overlap, and is fixed to one of the pair of sheathing boards, A corner ridge structure in which the other of the pair of fixing members engages with the above-water side engaging portion of the other of the pair of roof materials and the above-water side engaging portion formed on the corner ridge cover in a state in which the two engaging portions overlap, and is fixed to the other of the pair of sheathing boards.

8. The corner ridge structure according to any one of claims 1 to 5, Each of the plurality of corner ridge covers has a pair of side edges located on both sides of the corner ridge in a plan view, A corner ridge structure in which the pair of side edges extend in the vertical direction of the roof on each of the sheathing boards on which they are located.

9. The corner ridge structure according to claim 8, The corner ridge structure further includes a water-stopping material attached to an area adjacent to each of the pair of side edges on the underside of each of the plurality of corner ridge covers and extending along each of the side edges.

10. The corner ridge structure according to claim 8, A corner ridge structure further comprising a water-stopping material attached to the above-water end of the underside of each of the plurality of corner ridge covers at a location corresponding to the corner ridge.

11. The corner ridge structure according to claim 8, A corner ridge structure further comprising water-stopping materials attached to the upper surface of the above-water engaging portion of each corner ridge cover at both ends sandwiching the corner ridge or at locations corresponding to the corner ridge.

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