JP3034797B2 - Roof structure with inner gutter - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a double-roofed roof structure having an inner gutter between a water-side roof part and a water-side roof part on a roof surface having a gradient in a flow direction of water. Things.

[0002]

2. Description of the Related Art Conventionally, a roof structure having an inner gutter between a water-side roof part and a water-lower roof part on a roof surface having a gradient in the flow direction of water has been disclosed in Japanese Utility Model Laid-Open No. 58-11527. Some are shown in the gazette. A roof having such an inner gutter type gutter is generally employed with the intention of improving the design of the roof and the building by eliminating the eaves gutter from the eaves tip of the roof. By the way, the roof structure having the inner gutter in this way has a feature that the design of the roof and the building is improved, but has the following problems. A substantially U-shaped gutter main body having an opening at the upper side and underwater,
Since the roof material of the roof part on the water side is connected via arabesque and a draining member, when the gutter body overflows due to clogging of the drop due to sediment or heavy rain, etc. There was a problem that rainwater entered the back side of the lower roof and caused a water leakage accident.
If the inner gutter is located inside the wall,
Water leaks indoors, and even outside, it is a direct cause of soiling and corroding the eaves ceiling. In addition, even if sealing or other waterproofing treatment is applied to the connection part with the draining member or roof material, the gutter body is generally made of long material, so long-term waterproofing action due to thermal expansion and contraction due to aging etc. There was a problem that we could not expect.

[0003]

The problem to be solved is that even if the gutter body overflows, the overflow water is prevented from leaking to the eaves ceiling, and the eaves ceiling becomes dirty or corroded. It is an object of the present invention to provide a double-roofed roof structure having an inner gutter which does not cause the generation of the roof.

[0004]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention has a drainage space between an outer roof and an inner roof, and a water-side roof part and a water-side roof part having a gradient in the flow direction of water. In a double-roofed roof structure in which an inner gutter portion is formed between the roof portions, the gutter main body extends downward at least from a substantially groove-shaped gutter portion having an upper opening and an opening end on the water bottom side. The underwater-side extension covers the upper-side upper end of the inner roof of the underwater-side roof.
Further, in the invention, it is preferable that the underwater-side extension portion forms a capillary action preventing space between the underwater roof portion and a roof material of an inner roof. In the present invention, the bottom of the gutter has a water gradient in a longitudinal direction. Further, in the present invention, the underwater roof portion is formed of a roof panel on which a roof material of an inner roof is previously laid. Further, in the present invention, the water-side roof portion is characterized in that a roof material is preliminarily covered with a roof panel, and a gutter main body is assembled below the water-side roof portion.

The gutter body in the present invention is made of a known metal material such as a surface-treated steel plate, a plated steel plate, a stainless steel plate, an aluminum alloy plate, a titanium alloy plate, a copper plate, etc., the surface of which is coated with an anticorrosive film or paint such as various synthetic resins. Roll forming, etc.
It is manufactured by bender molding, lamination molding of carbon fiber, or extrusion molding of resin. When the base material is a metal material, the thickness of the material is not particularly limited.
It is about 4 to 1.6 mm. The shape of the gutter portion of the gutter main body may be a so-called substantially groove shape having an open upper surface, and its specific form does not matter. When the gutter main body is connected in the longitudinal direction, it is performed by a known means such as binding or welding via a seal or packing. The gutter portion forming surface of the gutter body may be subjected to shallow rib processing or the like to prevent expansion and contraction noise and distortion. In addition, on the back of the gutter body, to prevent condensation and soundproofing,
If necessary, a backing material such as polyethylene foam may be provided. When the gutter main body is thin, the gutter main body is supported by fixing a steel-made support frame or the like formed substantially in the same shape as the gutter to a building frame or the like. However, when the gutter body is thick, part or all of the support frame can be omitted. This support frame is usually 1.2 to 3.2 mm
It is made of a stainless steel plate or plated steel plate having a thickness of about.

The roofing material is made of metal horizontal roofing, vertical roofing shingles,
It is laid with a known material such as a tile or a slate. In the case where the roof material constituting the inner roof is a folded-plate roof, a glass fiber-based fire lining material may be provided on the back surface for fire protection. In addition, the roof material constituting the inner roof is preferably a metal roofing material of a vertical roof type because of the construction of drainage voids, but a synthetic resin, rubber, or asphalt waterproof sheet is stretched and fixed between the vertical rails. May be. The decorative cover is usually formed of the same material as the exterior material, but may be formed of a different material. The decorative cover is used when the gutter body does not have a rain gutter function, or when the material and color of the roof material and the gutter body are different and the extension of the gutter is to be covered to enhance the design. Therefore, when the gutter main body has a flashing function or is formed of the same material as the exterior material, the decorative cover may not be provided.

The construction of the present invention is generally performed in the following procedure. First, a water-drainable roof part is constructed on the water-drain side of the concave groove part for the building frame in which the concave groove part for installing the inner gutter is formed or in which the concave groove part can be formed. Subsequently, a gutter main body is installed in the concave groove portion, and a water-side roof portion is constructed on the water side.
In addition, the building frame in the present application is a steel frame such as a beam or a purlin,
It refers to a conventionally known building frame such as a concrete frame and a frame in which a steel frame is laid on a concrete structure, and is not particularly limited. Needless to say, a heat insulating material such as a wool cement board, glass wool, or a foamed resin board, or a fireproof member may be interposed on each of the roof portions as needed.

[0008]

1 to 3 illustrate one embodiment of a double-roofed roof structure having an inner gutter according to the present invention. The frame 1 is made of concrete, and has a groove 2 formed in a portion where the inner gutter is provided, that is, a ground surface 1a having a gradient in the flow direction of water. On the wood wool cement board 3 laid on the ground 1a, an inner shingle 19 under the water is laid in the direction of the eaves ridge via a waterproof sheet 4, and the adjacent inner shingles 19 on the left and right side edges are Rising part
A rafter / holding member 20 is provided between 19a and is fixed to the wood wool cement board 3 side by a fixing tool 21. The length of the rafter / holding member 20 extends in the girder direction over the water-side end of the inner roof plate 19 and the rafter / holding member 20. A fixed receiving member 22 is fixed to a state in which the elongated receiving bar 22 is mounted. In addition, a water return portion 19b is formed at a water-side end of the inner roof plate 19 on the water-lower side. Support part 22 on the upper surface of the receiving bar 22
On the a, the inclined surface portion 10d of the underwater extension portion 10c is mounted, and this support portion 22a is suspended from the underwater end and located on the inner roof surface portion 19c between the rafters and holding members 20. Folding part 22b
The hanging part 10e of the underwater extension 10c is fixed with a fixture 13, and the underwater extension part 10c covers the water-side roof part of the underwater inner roof plate 19 and A capillary action prevention space 11 is formed between the underwater extension 10c and the underwater roof part of the underwater inner roof panel 19. Then, the outer roof plate 24 extends over each of the rafters and holding members 20 on the underwater side, and the eave-side engaging portion 24a and the ridge-side engaging portion
The drainage space 25 is formed along the inner roof surface portion 19c between the outer roof plate 24 and the outer roof plate 24 while being fixed by the suspenders 6 while engaging and connecting the 24b. This drainage space under the water 25
Communicates with an opening (not shown) on the eaves side so that intrusion water can be drained from the eaves side.

The ridge-side engaging portion 24b of the outermost shingle 24 on the lower side of the water is engaged with the engaging portion 26a of the receiving fitting 26, and the receiving fitting 26 is located above the engaging portion 26a. The fixing portion 26b is fixed to the rafter and holding member 20 by the fixing device 8. Engagement part
26a is a U-shape opened downward, and the first support surface on the upper surface.
26c, a second support surface portion 26d formed on the water side of the fixing portion 26b, and a water side attachment portion 26f hanging on the water side of the second support surface portion 26d. The water return portion 18a is supported from the back side, and the water-return mounting portion 26e is suspended from the water-reverse end of the first support surface portion 26c.
The fixing portion 18c is fixed to the fixing portion 13 and the water return portion 18a is fixed to the water-side fixing portion 26f by the fixing member 38. In addition, the second support surface 26d of the receiving fitting 26 is pressed against the underwater extension 10c and the gutter 10a from the front side with the water-side mounting part 26f, whereby the movement of the gutter main body 10 is adjusted. ). The makeup cover 18 is
A water return portion 18a capable of covering the underwater opening portion 10a and the water-side mounting portion 26f, an upper surface portion 18b capable of covering the underwater extension portion 10c and the receiving metal 26, and an upper surface portion 18a.
b, a fixed portion 18c extending downward from the water-side end, and a fixed portion 18c
The lower part of the underwater rain presser part 18d is formed to extend from the lower end of the lower part to the lower part of the water and to cover the upper surface of the upper part of the outer roof plate 24 above the lower part of the water. Are fixed to the underwater mounting portion 26e with the fixing device 13 and the water return portion 18a is fixed to the water mounting portion 26f with the fixing device 38.
a, the underwater opening and the underwater extension 10c, that is, the uppermost outer roof part of the underwater roof, are covered and rain-dressed.

A water-side extending portion 10b of the gutter main body 10 is fixed to a water-end portion of the concave portion 2 on the water-side wood wool cement board 3 and a fixing portion 12 together with a fixing portion 14a of the arabesque and drainage member 14. Yes,
On the arabesque and draining member 14 and the wool cement board 3,
Similarly to the underwater side, the inner roof shingle 19 on the waterside is laid in the eaves ridge direction, and a rafter and holding member 20 is erected between the adjacent inner roof shingles 19 and fixed to the wool cement board 3 side. . Also,
A locking portion 19d at the underside end of the inner roof plate 19 is engaged with the engaged portion 14b at the underside end of the fixing portion 14a of the arabesque and draining member 14.

An outer roof plate 24 is attached to each rafter / holding member 20 on the water side, and its eave side engaging portion 24a and ridge side engaging portion 24b are provided.
Are fixed by the suspenders 6 in a state where they are engaged and connected to each other, and are laterally roofed. A drain space 25 is formed along the inner roof surface portion 19c between the outer roof plate 24 and the outer roof plate 24. The eaves side engaging portion 24a at the lower end of the outer roof slab 24 at the lower side of the upper side of the water
The rafter and presser member 20 protruding from the underwater end to the underwater side engages with an engagement flange portion 27a of a second arabesque and drainage member 27 fixed to the underwater end by a fixture 28. Between the second arabesque and draining member 27 and the arabesque and draining member 14, a drainage space 25 extends from the gutter 10a.
A rainwater flow-down space 29 is formed to reach the inside, and through this flow-down space 29, intruded water flows down from the drainage space 25 into the gutter 10a and is drained without delay.

FIGS. 4A to 4J show another variation of the cross-sectional shape of the inner gutter portion 9 in the roof structure having the inner gutter according to the present invention. In this embodiment, an example of a cross-sectional shape without the water-side extension 10b is shown by turning the water-side opening portion of the gutter portion 10a inward to form a water return. In each of these embodiments, it is desirable that the underwater extension 10c is fixed. In the embodiments (E) to (J), the water-side extension 10b and / or the water-side extension 10c are fixed. The support frame 15 and the support bracket 33 are
It will be formed in the form corresponding to the bottom part shape of a. 5A and 5B show another variation of the inner gutter 9 in the longitudinal direction, in which the gutter 10a has a water gradient in the longitudinal (girder) direction. In this example, the drainage of the gutter 10a is made smooth.

In each of the above-mentioned embodiments, the combination of the skeleton 1, the inner gutter 9 and the roof structure is free.
In addition, the frame 1 in the embodiment illustrated in FIG. 3 may be a steel frame. In addition, the inner roof plate 19 in the form illustrated in FIGS. 1 to 3 may be an existing tiled roof, and in this case, it can be used for repair of a tiled roof having an inner gutter. Further, when the material of the inner gutter portion 9 is different from the roof material, the decorativeness of the roof surface is improved by forming the decorative cover 18 with the same material as the roof material.

[0014]

G. Effects of the Invention According to the first aspect, even if the gutter body overflows due to clogging of the outlet due to sediment, heavy rain, etc., the rainwater flows through the inner gutter portion and the lower extension portion and the lower roof portion. Guided on the roofing material of the inner roof, no water leakage accidents occur. As a result, fouling and corrosion of the eaves ceiling are also prevented. H. According to the second aspect, the capillary phenomenon between the underwater extension of the inner gutter and the roof material is prevented, so that the performance of the rain is further improved. I. According to the third aspect, it is not necessary to adjust the level of the inner gutter portion in the girder direction, so that the workability is improved. J. According to claim 4, since the roof material of the underwater roof covered by the underwater extension of the inner gutter is panelized, the construction of the underwater roof and the construction of the inner gutter are almost the same. Excellent workability because it can be done without time lag. k. According to the fifth aspect, the roof material of the water-side roof portion is formed into a panel, and the inner gutter portion is integrally assembled, so that the workability is excellent. In particular, in combination with the invention of claim 4, the workability is extremely excellent.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view illustrating another embodiment of a roof structure having an inner gutter according to the present invention.

FIG. 2 is a partially enlarged longitudinal sectional view of FIG.

FIG. 3 is a partially enlarged perspective view of FIG. 1;

4A to 4J are cross-sectional views illustrating another variation of the cross-sectional shape of the inner gutter portion in the roof structure having the inner gutter according to the present invention.

FIG. 5 is a cross-sectional view illustrating another variation of the longitudinal direction of the inner gutter portion.

FIG. 6A is a cross-sectional view of FIG.
(B) is a sectional view of (B)-(B) of FIG. 5.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Body 1a Under ground 2 Groove part 3 Wood wool cement board 4 Waterproof sheet 6 Hanger 8,12,13,21,23,28,38 Fixture 9 Inner gutter part 10 Gutter body 10a Gutter part 10c Extending under water Part 10d Inclined surface part 10e Hanging part 11 Capillary phenomenon prevention space 14 Arabesque and draining member 14a Fixing part 14b Engagement part 18 Makeup cover 18a Water return part 18b Top part 18c Fixing part 19 Inner shingle 19a Rise of inner shingle 19b Water return section of inner roof panel 19c Inner roof surface section 19d Locking section 20 Rafter and holding member 22 Receiving section 22a Receiving section support section 22b Folding section 24 Outer roof panel 24a Eave side engaging section 24b Building side engaging section 25 Drainage space 26 Receiving bracket 26a Engagement part 26b Fixing part 26c First support surface part 26d Second support surface part 26e Underwater attachment part 26f Above water attachment part 27 Arabesque and draining member 27a Engagement flange part 29 Downflow space

Continuation of front page (58) Field surveyed (Int.Cl. ⁷ , DB name) E04D 3/00 E04D 13/064

Claims (5)

(57) [Claims] 1. A double-roofed roof having a drainage space between an outer roof and an inner roof and having an inner gutter between a water-side roof part and a water-lower roof part having a gradient in the flow direction of water. In the structure, the gutter main body includes a substantially groove-shaped gutter portion that opens at least in an upper portion and an extension portion that extends to the underwater side from an opening end on the underwater side. A roof structure having an inner gutter, wherein the roof structure covers an upper end above the water of an inner roof in a water roof part. 2. The inner gutter according to claim 1, wherein the underwater extension forms a capillary action preventing space between the underwater roof and a roof material of an inner roof. Roof structure. 3. The roof structure having an inner gutter according to claim 1, wherein the bottom of the gutter has a water gradient in a longitudinal (girder) direction. 4. The roof structure having an inner gutter according to claim 1, wherein the underwater roof part is formed of a roof panel on which a roof material of an inner roof is previously laid. . 5. The roof panel according to claim 1, wherein the roof part on the water side is a roof panel in which a roof material is preliminarily laid and a gutter main body is assembled below the water part. Roof structure with inner gutter.