JPH0737737B2 - Roofing structure - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a roofing structure applied to various roofing materials (metal roofing, pressed roof tiles, roof tiles, natural slate, tiles, etc.) of buildings in cold regions with a large amount of snow. It is a thing.

[0002]

2. Description of the Related Art Conventionally, in this type of roofing structure, for example, JP-A-60-215963 and Japanese Utility Model Publication No.
Some of them have a structure as disclosed in, for example, JP-A 8-64733, JP-A-60-17820, or JP-A-60-19614.

In a roof used in a special environment where the joint portion of the roofing material is flooded, such as in the case of a suga leak in a cold area with a large amount of snow and a storm in which rainwater is dammed on the roof surface, For example, an inner layer material and an asphalt waterproof paper are laid on a base member including a steel frame, a wooden purlin, an ALC panel, a concrete skeleton, etc.
Roofing material such as tiles, natural slate or tiles.

9 and 10 show an example of the structure of the roof in the above-mentioned conventional building. In the figures, 1 is a purlin as a base member made of C-shaped steel, and 2 is a predetermined space on the purlin 1. There are a plurality of metal rafters that are arranged orthogonally to each other.

Each of these rafters 2 is composed of a substantially U-shaped channel member that opens downward, has a cross-sectional shape in which flanges 2a, 2a are projected outward at both lower ends thereof, and The flange portions 2a, 2a are supported and fixed on the purlin 1 by screws 3, 3.

The purlin 1 between the rafters 2 and 2 is provided.
An inner layer material 4 made of a heat insulating plate or the like is laid on the upper side, and both end side edges of the inner layer material 4 are respectively mounted on the flanges 2a and 2a which are extended to the lower ends of the rafters 2 and 2. It is supposed to be placed.

In the figure, reference numeral 50 indicates a secondary waterproof function made of a material such as asphalt roofing or asphalt felt laid on the lower surface side of the roof materials 8 and 8 so as to cover the rafters 2 and the inner layer material 4. This is an asphalt waterproof paper.

Reference numeral 6 in the drawing is a suspension as a holding member,
As shown in FIG. 11, it has a mounting hole 6a and a hooking portion 6b bent in a hook shape, and a screw 7 is inserted into the mounting hole 6a so as to be fixed to the upper surface of the rafter 2. In addition, the connecting portions 8a and 8b of the metal roofing members 8 and 8 which are connected to each other in the eaves direction and laterally roofed are hooked to the hooking portion 6b. ing.

However, in the roof having such a conventional structure, as shown in FIG. 10, the connecting edge portions 8a and 8b of the roofing materials 8 and 8 connected to each other in the eaves direction, for example, in a portion A near the eaves of the roof. Snow S accumulates on the ground, and the snow S melts to form a water pool W, which easily causes flooding.

As described above, when the connecting edge portions 8a and 8b of the roofing materials 8 and 8 are submerged by snow melting or the like, conventionally, the water that has penetrated into the insides (back surface side) of the roofing materials 8 and 8 is At present, it is discharged from the eaves by receiving it with the waterproof paper 50 and guiding it toward the eaves by the roof slope.

[0011]

However, in the roof having the above-mentioned conventional structure, not only is the waterproof paper 50 liable to be damaged, but also the connecting edge 8 of the roofing material 8,8.
When the water submerged in a and 8b enters the inside of the roofing materials 8 and 8, the waterproof paper 50 has a penetrating portion due to a screw for fixing the suspender 6, so that the penetrating portion is a waterproof defect portion. Then, as shown in FIG. 10, through the penetration point,
There is a problem that water leakage easily occurs inside the rafters 2 or between the outer side of the rafters 2 and the inner layer material 4 and the secondary waterproof function cannot be reliably exhibited.

An object of the present invention is to provide a roofing structure capable of reliably preventing water leakage to the indoor side even if the connecting portion of the roof material is submerged.

[0013]

In order to solve the above problems, the present invention provides a base member such as a purlin and a plurality of left and right members supported and fixed on the base member at predetermined intervals. Rafters having a groove with a substantially W-shaped cross-section, inner layer materials laid between the respective rafters, and right and left end edges of the face plate portion laid on each of the inner layer materials and bent downward. The water leakage prevention plates inserted into and engaged with the left and right groove portions that open above each of the adjacent rafters, the roof material laid so as to cover the water leakage prevention plates, and the roof materials inside And a holding member such as a hanging member fixed to the rafter so as to be held and fixed from the rafter, and a gutter member which is arranged on the base member so as to cover the lower outer peripheral surface of the rafter and which opens upward. It is what

The present invention also includes a base member such as a purlin,
A plurality of inner layer materials laid on the base member and having a groove at the center of the upper surface thereof, and a substantially W-shaped cross section having groove portions on the left and right which are fitted and supported and fixed in the groove portions of the respective inner layer materials. A rafter of a shape and the left and right edges of the face plate of the rafter, which are laid between the rafters, are bent downward so as to be engaged with the left and right grooves of the adjacent rafters. Water leakage prevention plate, and a roofing material laid so as to cover these water leakage prevention plates,
A holding member such as a hanging member fixed to the rafter so as to hold and fix these roofing materials from the inside, and a gutter member which is arranged in the groove portion of the inner layer material so as to cover the lower outer peripheral surface of the rafter and which opens upward. It is configured to include.

[0015]

That is, according to the above-described structure of the present invention, most of the water that has infiltrated from the connecting portion of the roofing material drops on the water leakage prevention plate, is guided to the eaves side, and is discharged from the eaves side. .

Further, since the side edge portions of the face plate portion of the water leakage prevention plate are respectively inserted and engaged in the left and right groove portions which open above the rafter, and the lower outer peripheral surface of the rafter is covered with the gutter member. Even if part of the water on the water leakage prevention plate that has infiltrated from the connection part of the roof material drips into the rafter, the water is received by the gutter member, guided to the eaves side, discharged from the eaves side, and rafters. Is not guided between the inner layer material and the inner layer material.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below with reference to the embodiments shown in FIGS.

In the illustrated embodiment according to the present invention, portions having the same structures as those of the conventional roofing structure shown in FIGS. 9 to 11 will be described using the same reference numerals.

1 to 3 show a first embodiment of a roofing structure according to the present invention. As shown in FIGS. 1 and 2, the roofing structure is arranged at a predetermined interval on a purlin 1 which is a base member. Each of the plurality of rafters 2 thus formed is formed in a substantially W-shaped cross section.

An inner layer material 4 is laid between each of the rafters 2 and 2, and each of the inner layer materials 4 and 4 is laid.
Flange portions 2b, 2b formed on both left and right end edges of the upper end portion are mounted on the upper surface of the flange portion 2b.
b and 2b are configured to be supported and fixed on the purlin 1 by a pair of fixing fittings 30 and 30 made of screws penetrating the inner layer materials 4 and 4, and these fixing fittings 3
By tightening 0 and 30, the rafter 2 is pressed and held on the purlin 1.

Further, a water leakage prevention plate 5 is laid on the inner layer material 4 laid between the respective rafters 2 and 2, and the water leakage prevention plate 5 applies asphalt to a metal plate, resin or paper. As shown in FIG. 3, vertical ribs 51 each having a trapezoidal cross section are formed on the face plate portion 5a at appropriate intervals in the left-right direction. The left and right edges 5b, 5b are bent downward at a right angle.

The left and right edges 5b, 5b of the water leakage prevention plate 5 are inserted into and engaged with the left and right grooves 21, 21 opening above the adjacent rafters 2, 2, respectively. In addition, a roof material 8 is laid so as to cover the water leakage prevention plate 5.

This roofing material 8 is held and fixed from the inside by a hanging member 6 as a holding member as in the conventional case, and this hanging member 6 is fixed to the central upper surface 2c of the rafter 2 via a screw 7. .

By the way, the height position of the central upper surface 2c of the rafter 2 is the same as the height of the flange portions 2b, 2b formed on both upper left and right upper edges of the rafter 2, or the height of the water leakage prevention plate 5 of the rafter 2. It is set higher by the height of the vertical ribs 51.

Reference numeral 10 in the drawing denotes a bottomed gutter member which is arranged so as to cover the lower outer peripheral surface of the rafter 2 and has an open top.

The gutter member 10 is provided with the fixing fittings 30, 3 as described above.
It is adapted to be pressed and held on the purlin 1 by rafters 2 by tightening 0.

FIG. 4 shows a second embodiment according to the present invention, in which the left and right upper end edges of the gutter member 10 which covers the lower outer peripheral surface of the rafter 2 are bent downward to extend right and left. It has a configuration in which the flange portions 10a and 10a are formed, and these flange portions 10a and 10a are fixed by the fixing fittings 30 and 30.

Further, FIG. 5 shows a third embodiment according to the present invention, in which a plurality of inner layer materials 4 are laid on the purlin 1 and a groove portion 41 is formed in the substantially central portion of the upper surface thereof. The rafter 2 having a substantially W-shaped cross section is fitted in the groove 41.

A fixed band 31 having a cross-sectional shape substantially the same as that of the rafter 2 as shown in FIG. 6 is applied to the rafter 2 from above, and the flange portion 3 of the fixed band 31 is applied.
By fixing 1a and 31a to the purlin 1 with fixing fittings 30 and 30 such as screws which are penetrated by the inner layer materials 4 and 4, the rafter 2 is pressed and held, and the gutter member 10 is fixed to the inner layer material by the rafter 2. The groove portion 41 of No. 4 is pressed and held.

Further, a claw portion 22 is cut out on the center upper surface 2c of the rafter 2, and the use of the screw 7 becomes unnecessary by fitting the hanger 6 to the claw portion 22. There is.

By the way, reference numeral 23 in the drawing denotes a drain port formed on the inner side wall or the bottom surface of the left and right groove portions 21, 21 of the rafter 2 with a predetermined interval, and rainwater flowing into the left and right groove portions 21, 21 of the rafter 2. The water is easily drained into the gutter member 10.

Furthermore, FIGS. 7 and 8 show a fourth embodiment according to the present invention, which has the structure of the third embodiment.

[0033]

As is apparent from the above description, according to the present invention, the side edge portions of the face plate portion of the water leakage prevention plate are respectively inserted and engaged in the left and right groove portions that open above the rafters, and the lower portion of the rafters. Since the outer peripheral surface is covered with the gutter member, even if part of the water on the water leakage prevention plate that has entered from the connection part of the roof material drops into the rafters, the water is received by the gutter member and eaves Side, it is discharged from the eaves side and is not guided between the rafter and the inner layer material, which ensures water leakage to the indoor side even if the roof material connection part is flooded. Can be prevented.

[Brief description of drawings]

FIG. 1 is a partial perspective view showing a first embodiment of a roofing structure according to the present invention.

FIG. 2 is likewise an enlarged cross-sectional view of a main part.

FIG. 3 is an explanatory view of a water leakage prevention plate.

FIG. 4 is an enlarged cross-sectional view of an essential part showing a second embodiment according to the present invention.

FIG. 5 is an enlarged cross-sectional view of an essential part showing a third embodiment according to the present invention.

FIG. 6 is a perspective view showing a fixing member of the same.

FIG. 7 is an enlarged sectional view of an essential part showing a fourth embodiment according to the present invention.

FIG. 8 is a perspective view showing a fixing member of the same.

FIG. 9 is a cross-sectional view showing a conventional roofing structure.

FIG. 10 is a vertical sectional side view showing a conventional roofing structure in an enlarged manner.

FIG. 11 is a perspective view of a hanger used to hold a roofing material.

[Explanation of symbols]

1 ... Base member (main building), 2 ... Rafter, 2b, 2b
... Flange part, 21, 21 ... Groove part, 4 ... Inner layer material, 5 ... Water leakage prevention plate, 5a ... Face plate part, 5
b, 5b ... Both ends, 6 ... Holding member (hanger), 8
... Roofing materials, 8a, 8b ... Connection edge parts, 10 ...
・ Gutter member, 10a, 10a ... Flange part, 30, 3
0 ... Fixing metal fittings, 50 ... Waterproof paper.

Claims (7)

[Claims] 1. A base member such as a purlin, a plurality of rafters having a substantially W-shaped cross section having left and right groove portions supported and fixed on the base member at predetermined intervals, respectively, and between the respective rafters. The inner layer material laid on each of them, and the left and right end edges of the face plate portion laid on each of the inner layer materials are bent downward to form the left and right groove portions above the adjacent rafters, respectively. Water leakage prevention plates that are plugged in and engaged, roof materials laid so as to cover these water leakage prevention plates, and retention of suspension members that are fixed to the rafters to retain and fix these roof materials from the inside A roofing structure comprising: a member; and a gutter member which is arranged on the base member and covers the lower outer peripheral surface of the rafter and which opens upward. 2. The roofing structure according to claim 1, wherein the gutter member is pressed and held on the base member by rafters. 3. The roofing structure according to claim 1, wherein the left and right upper end edges of the gutter member are bent downward to form a flange portion extending leftward and rightward. 4. An underlayer member such as a purlin, a plurality of inner layer materials laid on the underlayer member and having a groove portion at a substantially central portion of its upper surface, and fitted and supported in the groove portions of each of the inner layer materials. A fixed rafter having a substantially W-shaped cross section having left and right fixed grooves, and an upper part of each of the adjacent rafters which are laid between the rafters and are bent downward at both left and right edge portions of the face plate part. Water leak prevention plates inserted into and engaged with the left and right groove portions that open to, roof materials laid so as to cover these water leak prevention plates, and the rafters to hold and fix these roof materials from the inside. A roofing structure comprising: a fixed holding member such as a hanging member; and a gutter member which is arranged in a groove portion of the inner layer material and opens upward so as to cover a lower outer peripheral surface of the rafter. 5. The roofing structure according to claim 1, 2 or 4, characterized in that drainage ports are provided in the left and right groove portions of the rafter at predetermined intervals. 6. The roofing structure according to claim 1, wherein a plurality of vertical ribs are provided at appropriate intervals on the face plate portion of the water leakage prevention plate. 7. The roofing structure according to claim 4 , wherein the gutter member is pressed and held in the groove portion of the inner layer material by rafters.