JP2574192B2 - Double roof - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a roofing material laid on a lower supporting member such as a purlin or the like, and an outer roofing member via an upper supporting member such as a metal rafter. The present invention relates to a double-roofed roof to which materials are fixed. 2. Description of the Related Art Conventionally, as a double-roofed roof, Japanese Utility Model Application No.
As shown in JP-A-64733, there has been a construction in which a roofing material is laid on a main building, and an outer roofing material is fixed on a projecting portion of the roofing material with screws or bolts. Also, as shown in Japanese Patent Application Laid-Open No. 60-215963, metal rafters are fixed on a rooftop with a base material interposed therebetween, and cut and raised pieces provided on the upper wall of these rafters allow the metal plate to be removed from the metal plate. In some cases, a roofing material is fixed, and an underlaying material, also called a water leakage prevention plate, is laid only on the base material on the eaves side portion of the roof. Further, in a roof using a metal rafter, there has been a roof in which a hanging member is fixed on an upper wall of the rafter with bolts or the like, and a roof material is fixed by the hanging member. [0005] However, the conventional method of fixing the roofing material to the protruding portion of the underlaying material or the upper wall of the metal rafter by means of screws, bolts or the like, requires a penetration portion such as a screw or bolt. In the case of metal rafters with cut-and-raised pieces, water such as rainwater leaks into the room from the hole after the cut-and-raised pieces are provided. There was a problem that the base material was corroded by the leak and the leaked water. SUMMARY OF THE INVENTION The present invention solves the above-mentioned problems, and ensures that water leaks from an upper support member such as a metal rafter to the inside of a room and corrosion of members constituting a lower support member such as a base material caused by the leakage. It is an object of the present invention to provide a double-roofed roof that can be prevented from being damaged. [0007] A double-roofed roof according to the present invention is provided in an upper support member such as a metal rafter having a side wall bent below both side edges of an upper wall, or an upper support member and a purlin. A drain member is disposed between the lower support member such as a base material, and the upper support member is supported and fixed on the lower support member.
An under roofing material is laid, and an outer roofing material is fixed on an upper wall of an upper support member by a mounting member such as a screw. [0008] In the double-roofed roof according to the present invention, when water such as rainwater enters the inside of the outer roofing material, most of the entered water falls on the lowering material and flows down from the eaves as it is. Is discharged. Further, a part of the water entering the outside roofing material falls on the upper wall of the upper support member, and is a screw hole of a screw or a mounting member which is a mounting member for fixing the outside roofing material. The water enters the upper support member through a hole or the like after the cut-and-raised pieces are provided, and the entered water is received by a drainage member provided in the upper support member, flows down, and is discharged from the eaves. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a first embodiment of the present invention will be described with reference to FIG. In FIG. 1, (1) is a purlin made of C-type steel, and a base material (2) is laid on the purlin (1), and the lower support member () is formed by the purlin (1) and the base material (2). 3). On the base material (2), a plurality of metal rafters (4) as upper support members are arranged at required intervals, and these rafters (4) are orthogonal to the purlin (1), The slope is down toward the eaves. The rafters (4) have side walls (6) bent at right angles below both side edges of the upper wall (5), and a receiving portion projecting upward in the width direction is provided at an intermediate portion of these side walls (6). (8) are provided facing each other, and a flange (7) is provided on the lower edge of the side wall (6) to protrude outward in the width direction;
The protruding edge portion (7a) of the flange portion (7) projects outward in the width direction of the side wall (6). In the rafter (4), gutter-shaped drainage members (9) are disposed along the longitudinal direction thereof, and the drainage members (9) have widths on both side edges of the bottom plate (10). A side plate (11) protruding upward and outward in the direction is provided, and a V-shaped engaging portion (12) is engaged with the outer side in the width direction of the upper edge of the side plate (11). The upper part of the side plate (11) of the drainage member (9) is supported by the upper edge of the receiving part (8) of the rafter (4), and the lower edge of the engaging part (12) is received by the receiving part (8). The drainage member (9) is held in the rafter (4) by being supported on the upper surface and elastically supporting the outer edge of the engaging portion (12) on the side surface (6) facing the side wall (6) of the rafter (4). . In the above-described state, the rafters (4) support the flanges (7) on the base material (2), and fix the fixing members such as fixing screws and nails penetrating the flanges (7) from above. It is fixed on the base material (2) by a tool (13). The rafters (4) arranged at required intervals
Underlaying material (14) is laid between them. Underlaying material (1
4) The two side edges (15) are projected outward and upward, and the ridge (16) is projected from the middle part in the width direction to form the ridge (16).
The upper surface (16a) is formed at the same height as the upper wall (5) of the rafter (4), and the concave portion (17) is formed on both outer sides in the width direction of the lower edge of the ridge portion (16). The underlaying material (14) has the bottom surface of the concave portion (17) supported on the base material (2), and the flange portion (7) of the rafter (4) and the fixing tool (13) are supported by both sides. , And both side edges (15) are engaged and elastically held on the lower surface of the receiving portion (8) of the rafter (4). A screw (1) is placed on the upper wall (5) of the rafter (4).
8) fixing the base (20) of the hanging member (19), and locking the outer roofing material (22) made of a metal plate by the locking portion (21) of the hanging member (19). The outer roofing material (22) is fixed on the upper wall (5) of the rafter (4) and supported on the ridges (16) of the underlaying material (14) to form the outer roofing material (14). It is roofed above. In addition,
The screw (18) and the hanging member (19) constitute an attachment member (23), and the screw (18) penetrates the base (20) of the hanging member (19) and the upper wall (5) of the rafter (4). And protrudes above the drainage member (9) in the rafter (4). In the double-roofed roof of the first embodiment having the above-described structure, when water such as rainwater enters the inside of the outer roofing material (22), most of the entered water falls on the lowering material (14). Fall directly. A part of the water that has entered the outside roofing material (22) falls on the upper wall (5) of the rafter (4), but most of the water that has fallen from the upper wall (5). It flows along the side walls (6) of the rafters (4), falls on the underlaying material (14), merges with the water dropped directly on the underlaying material (14), and It is discharged outside the roof from the eaves. Further, the rafter (4) has a receiving portion (8) formed at an intermediate portion of the both side walls (6) to reduce the widthwise dimension of the lower portion of the both side walls (6), and to provide the underlaying material (14). ), The side edges (15) protruding outward and upward are engaged and resilient to the lower surface of the receiving portion (8), so that the water flowing along the side wall (6) flows through the side wall (6) and the underlaying material ( Water does not leak from between the side edge portion (15) and the indoor side. Then, a part of the water that has fallen on the upper wall (5) of the rafter (4) falls into the rafter (4) through the hole through which the screw (18) of the upper wall (5) passes. Rafters (4)
It is received by the drainage member (9) provided inside, and is discharged out of the roof from the eaves of the drainage member (9). FIG. 2 shows a second embodiment of the present invention. In this embodiment, an upright portion (24) having an inverted V-shaped cross section is provided on a flange portion (7) of a metal rafter (4) as an upper support member. ) Are provided, and side plates (11) projecting at right angles on both side edges of the bottom plate (10) of the gutter-shaped drainage member (9) are engaged with the lower surface of the upright portion (24), and the drainage member (9) The only difference from the first embodiment is that the bottom plate (10) is supported on the base material (2). FIGS. 3A and 3B show different modifications of the metal rafter (4) and the drainage member (9) used in the present invention. FIG. 3A shows a projection (2) projecting from the outer surface of both side plates (11) of the drainage member (9) into a receiving recess (26) projecting from the upper inner surface of both sides (6) of the rafter (4).
7) is engaged. FIG. 3B shows a step (28) provided at the upper part of both side walls (5) of the rafter (4) to reduce the width of the upper part, and the widthwise lower part of the side plate (11) of the drainage member (9). Are provided with engaging portions (12) which are bent in the direction of the arrow, and these are engaged and supported by receiving portions (8) provided below the side walls (6) of the rafters (4). In the drainage member (9) of FIG. 3B, the bottom plate (10) is supported by the base material (2), and the base plate (29) is installed on the step (28) of the rafter (4). , And an outer roofing material (not shown) is laid on the step (28). Further, as shown in FIG. 4, the receiving portion (8) provided on the side wall (6) of the rafter (4) of the first embodiment engages with the engaging portion (12) of the drainage member (9) shown in FIG. ) May be engaged. Further, as shown in each of FIGS. 5A to 5D, the rafters (4) have the upper portion of the side wall (6) spread downward, and the cross section of the receiving portion (8) has the lower surface. Opened inverted U
The shape can be changed as appropriate, such as forming a letter-like shape, making the upper and lower portions of the side wall (6) extend downward, and providing a receiving portion (8) in which the middle portion of the side wall (6) is bent at a right angle inward in the width direction. As shown in FIGS. 6A to 6D, the cross section of the side edge portion (15) of the underlaying material (14) can be appropriately changed as shown in FIGS. As shown in A) and (B), there are no ridges or recesses, or ridges (16).
Although there is no recess, the protrusion may be provided at a plurality of positions in the width direction although not shown. In FIGS. 2 to 6, FIGS. 7 and 8, and FIGS. 9 and 10, the same reference numerals as those in FIG. 1 denote corresponding parts. In the present invention, the upper supporting member such as a metal rafter may be provided with a cut-and-raised piece for fixing the outer roofing material directly or via a suspension or the like on the upper wall. In the present invention, the underlaying material and the drainage member are made of a metal plate such as a thin steel plate or a synthetic resin plate.
The eaves-side end of the eaves-side underdraining material and drainage member are superimposed on the eaves-side end of the eaves-side underdrainage and drainage members, and connected in the eaves-ridge direction. The outer roofing material is not limited to a metal plate such as a steel plate, but may be a natural slate, a tile, or the like. There is no limitation, and only the main house or a concrete slab or a slab with a base material laid on the concrete slab may be used. Further, according to the present invention, an upper support member such as a metal rafter is placed on a holding plate fixed on a lower support member with bolts and nuts while holding a drainage member therein, and the bolt, the nut and the holding member are provided. The upper support member may be fixed on the lower support member by positioning the drainage member above the plate and clamping the flange portion of the upper support member between the holding plate and the wedge plate. Then, in this case, the left and right underlaying materials laid in advance on the lower support member, the lower support member is sandwiched by the holding plate, and the left and right side roofing members protrude upward. Installed inside the holding plate. As described above, according to the present invention, the present invention can be applied to an upper support member such as a metal rafter whose side walls are bent below both side edges of an upper wall, or an upper support member and a purlin, a base material, etc. A drainage member is disposed between the lower support member and the upper support member, and an upper support member is supported and fixed on the lower support member, a lower roofing material is laid, and a mounting member such as a screw is mounted on an upper wall of the upper support member. Since the outer roofing material is fixed by the above, the following effects can be obtained. That is, the double-roofed roof according to the present invention
When water, such as rainwater, enters the inside of the outer roofing material, most of the water that has entered falls on the roofing material, flows down and is discharged from the eaves. A part of the water entering the outer roofing material falls on the upper wall of the upper support member, and is a screw hole or a mounting member of a screw which is a mounting member for fixing the outer roofing material. The water enters the upper support member through a hole or the like after the cut-and-raised piece is provided, and the entered water is received by the drainage member provided in the upper support member, flows down, and is discharged from the eaves. Therefore, it is possible to reliably prevent water leakage into the lower support member and corrosion of a portion constituting the lower support member such as a base material caused thereby.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a partial sectional front view showing a double-roofed roof according to a first embodiment of the present invention. FIG. 2 is a sectional front view showing a metal rafter and a drainage member of a double-roofed roof according to a second embodiment of the present invention. FIGS. 3A and 3B are cross-sectional views each showing a drainage member placed in different metal rafters of the present invention. FIG. 4 is a cross-sectional view of the metal rafter according to the first embodiment of the present invention, in which different drainage members are inserted. FIGS. 5A, 5B, 5C, and 5D are cross-sectional views showing further different modifications of the metal rafters used in the present invention. FIGS. 6 (A), (B), (C) and (D) are cross-sectional views showing different modifications of the side edges of the underlaying material used in the present invention. FIGS. 7A and 7B are cross-sectional front views showing different modifications of the underlaying material used in the present invention. [Description of Signs] (1) Purlin (2) Base material (3) Lower support member (4) Metal rafter (upper support member) (5) Upper wall (6) Side wall (7) Flange (7a) Projecting edge Part (8) Receiving part (9) Drainage member (10) Bottom plate (11) Side plate (12) Engagement part (13) Fixture (14) Underlay material (15) Side edge part (16) Ridge part (16a) ) Upper surface (17) Recess (18) Screw (19) Hanger (20) Base (21) Locking part (22) Outer roofing material (23) Mounting member (24) Standing part (26) Receiving recess (27) Convex Part (28) Step (29) Field board

Claims (1)

(57) [Claims] [Claim 1] A drainage member is disposed in an upper support member such as a metal rafter whose side walls are bent below both side edges of an upper wall, and a purlin, a base material and the like are provided. The upper support member is supported and fixed on a lower support member, a lower roofing material is laid, and an outer roof material is fixed on an upper wall of the upper support member by a mounting member such as a screw. Thatched roof. 2. A drainage member is provided between an upper support member such as a metal rafter whose side walls are bent below both side edges of an upper wall and a lower support member such as a purlin and a base material. A double-roofed roof, wherein the upper support member is supported and fixed on the member, a lower roofing material is laid, and an outer roofing material is fixed on an upper wall of the upper support member by a mounting member such as a screw. . 3. The upper support member projects a flange portion projecting outward in the width direction below both side walls, and these flange portions are supported and fixed on the lower support member by a fixing tool. The double-roofed roof according to claim 1 or 2 , wherein the roof is covered with the fixture and disposed between the upper support members. 4. The upper support member is provided with receiving portions projecting inward in the width direction on both side walls, and these receiving portions engage and support engaging portions provided on both side plates of the gutter-shaped drainage member. Item 4. The double-roofed roof according to item 1 or 3. 5. The upper support member has an upright portion protruding upward from the flange portion along the longitudinal direction, the drainage member has a side plate engaged in the upright portion, and the bottom plate has a lower plate mounted on the lower support member. The double-roofed roof according to claim 2 , which is supported. 6. The underlaying material has a projection that projects upward at the same height as the upper wall of the upper support member, and a recess that abuts the lower support member on the outer side in the width direction of the lower edge of the projection. Is formed in a series ,
The double-roofed roof described . 7. The upper support member is provided with receiving recesses protruding inward in the width direction on both side walls, and the flange portion is supported and fixed on the lower support member by a fixing tool. An upright portion protruding outward and upward is formed, disposed between the upper support members so as to cover the fixture, and the upright portion is engaged with the receiving recess . The double-roofed roof according to 3, 4, 5 or 6.