JP3408625B2 - Waterproof structure around inner gutter and inner gutter on roof or balcony - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a waterproof structure for an inner gutter and a roof or balcony around the inner gutter.

[0002]

2. Description of the Related Art A unit building system is known as a system for increasing the industrial production rate of buildings. As for the unit building, for example, as described in Japanese Patent Laid-Open No. 55-152236, a single building is divided into a number of units to be factory-produced, and these are constructed and assembled at a construction site. It is a method building. For unit buildings, quality control and cost reduction are achieved by factory production.
In addition to having the advantage that each unit can be transported, it is possible to change the adjacency and combination of units in various ways according to the request of the owner and the environment of the construction site, so various floor plans and It has an excellent advantage of being able to provide the owner with a housing of a size. As a unit that composes a unit building, there are a room unit that composes each room such as a living room, a dining room, and a bedroom, a roof unit that composes a roof part of the building, a balcony unit that composes a balcony, etc. And called the "building unit"). To assemble, first install a plurality of lower floor room units on the foundation prepared in advance, connect them to each other to form a lower floor structure, and then, on the upper part of the lower floor structure, form a plurality of upper floor room units. It is carried out by a construction procedure in which the balcony units are stacked and connected to each other to form an upper floor skeleton, and a corresponding roof unit is placed on the upper floor skeleton and connected to each other.

By the way, the balcony is an outdoor floor that can be used as an extension of indoor life. However, when there is a room directly below, it is also a flat roof mounted on the upper part of the lower-floor room unit. It is indispensable to keep the floor from raining. Conventionally, as described in Japanese Utility Model Publication No. 57-47290, there is a gentle flow of the floor base plate (roof base plate) from the indoor side to the outdoor side in the balcony frame. It is installed in a tilted state so that it is generated, and a waterproof plate is attached to the upper surface of the installed floor base plate to perform waterproof construction. FIG. 23 is a conventional balcony unit (flat roof unit) embodying the one described in the above publication.
FIG. 24 is a plan view showing the waterproof structure of FIG.
It is sectional drawing which follows the -V line. As shown in these figures,
Conventionally, when waterproofing (raining) is applied to a balcony floor base (flat roof base), the asphalt roofing 2 is first laid on the upper surface of the floor base plates 1, 1, ... , Along the longitudinal direction of the balcony unit, a plurality of waterproof plates 3, 3, etc. such as vinyl chloride steel plates (polyvinyl chloride metal laminated plate) are attached in parallel, and the seam between the waterproof plates 3, 3 (joint 4) The drain groove member (gutter) 7 accommodating the fitting holding member (keeper) 6 is fitted into the recess 5 formed on the lower side of the waterproof plate 3 and the joint 4 between the waterproof plates 3 and 3. A joint material (joiner) 8 having a substantially T-shaped cross section inserted from above is closed, and the tip of the joint material 8 is fitted and fixed to the fitting holding member 6 in the drain groove member 7. In addition, normally, the fitting holding member 6,
The drain groove member 7 and the joint material 8 are also formed of a vinyl chloride steel plate like the waterproof plate 3. According to this waterproof structure,
The rainwater that pours onto the floor of the balcony is collected in the inner gutter 9 and then discharged downward through an unillustrated vertical gutter. At this time, even if rainwater enters through the gap (joint 4) between the waterproof plates 3 and 3, the rainwater flows through the drain groove member 7 into the inner gutter 9.

[0004]

By the way, in general, in a balcony, as shown in FIG. 25 (a), all or part of a balcony floor 10a is a protruding type projecting outward with respect to a lower floor building A1. There are a cantilever type and an overhang type, and a non-protruding type in which the balcony floor 10b does not project outward with respect to the lower-floor building A2, as shown in FIG. 26 (a). However, in the conventional balcony unit, regardless of whether it is a protruding type or a non-projecting type, the balcony floors 10a and 10b (floor base plates 1a and 1b) may be used.
Or the waterproof plates 3a, 3b) and the inner gutters 9a, 9b, a gap is created, and since the gap is not protected against rain, the drain holes of the inner gutters 9a, 9b are clogged. Or, for some reason, the inner gutters 9a, 9
If more water than the design precipitation of b flows, the inner gutter 9a,
Rainwater Wa, Wb may overflow from 9b. When such a situation occurs, in the protruding balcony unit, as shown in FIG. 25 (b), raindrops occur from the eave ceiling 11a, and molds and the like grow on the traces of the raindrop, so that the eaves ceiling 11a looks beautiful. May be damaged. On the other hand, in the non-protruding type balcony unit, as shown in FIG. 26 (b), rain drops from the indoor ceiling 11b to the indoor floor surface, so that the damage due to the rain drops is significantly greater than the former case.

The present invention has been made in view of the above circumstances, and even if rainwater overflows from the inner gutter, it is possible to reliably prevent the rainwater from entering the inside of the building or the eaves ceiling. It is an object of the present invention to provide a waterproof structure around an inner gutter that can be formed and an inner gutter of a roof or a balcony.

[0006]

In order to solve the above-mentioned problems, the invention according to claim 1 is provided with rainwater which is internally mounted along the outdoor side edge of the roof or balcony and flows on the roof surface or the balcony floor surface. An inner gutter which receives the water and which leads to the drain hole, the inner gutter extending along the longitudinal direction of the gutter body having a concave cross section, and projecting substantially horizontally from the upper end edge of the indoor side upright part of the gutter body to the indoor side. And a waterproof flange extending to the upper surface of the underwater side edge of the base plate that constitutes the base of the roof face plate part or the balcony floor, and the roof face plate part or the balcony floor
Along the depth direction of the roof plate or balcony floor,
One, a plurality of drains arranged at a predetermined distance from each other
A plurality of concave sections for receiving each underwater end of the member
It is characterized by having a groove receiving portion .

The invention according to claim 2 is the inner gutter according to claim 1, wherein the gutter body is such that the upper end edge of the outdoor side upright portion along the longitudinal direction is the roof surface or the balcony floor under the water. while being set higher than the surface, the upper edge of the indoor-side upright portion is characterized in that it is set slightly lower than the top surface or balcony Yukamen.

The invention according to claim 3 is the inner gutter according to claim 2, wherein the outdoor side upright part of the gutter body is provided with a front part.
Serial roof or balcony floor and overflow holes located substantially the same level is characterized in that it is bored.

The invention according to claim 4 is the same as claim 1,
2 or 3 the inner gutter described a waterproof structure for the inner trough around the roof or balcony is attached inside the outdoor-side side edge portion, of the waterproof flange in said trough, flange excluding said groove receiving portion portion, sandwiched close contact between a plurality of base plates juxtaposed in a direction perpendicular to the depth direction of the roof or balcony, and a plurality of waterproof plates waterproof covering the upper surface of each base plate a plurality of said grooves receiving portion, fitted respectively in the gap of the base plates, furthermore, water lower end portion of the drainage channel member is placed and fixed close contact with each groove receiving portion, the waterproof plate while being suspended is bent in said inside gutter at the roof surface plate portion or the balcony floor water bottom edge, the drainage groove member also in said inside gutter is bent at the water bottom edge Characterized by being hung.

Further, in the invention according to claim 5 , a waterproof sheet is laid around the inner gutter mounting portion along the outdoor side edge, and the inner gutter according to claim 1, 2 or 3 is provided on the waterproof sheet. A waterproof structure around the inner gutter of a roof or balcony to which is attached, wherein the waterproof sheet is laid extending to the upper surface of the underwater part of the roof plate or the base plate forming the base of the balcony floor. , waterproof flange in said gutter, said <br/> base plate, between the waterproof plate and the upper surface of the base plate waterproof coating
Wherein is sandwiched close contact state via a waterproof sheet, the waterproof plate is characterized in that it is suspended is bent in said inside gutter at the roof surface plate portion or the balcony floor of water lower edge .

Further, in the invention according to claim 6 , a waterproof sheet is laid around the inner gutter mounting portion along the outdoor side edge, and the inner gutter according to claim 1, 2 or 3 is provided on the waterproof sheet. A waterproof structure around the inner gutter of the roof or balcony to which is attached, in which the underwater base of the roof face plate part or the balcony floor is juxtaposed in a direction orthogonal to the depth direction of the roof or balcony. consists upper and lower ply of the upper base plate and the one or more sheets of the lower base plate, the waterproof sheet, is incorporated laid to extend to the upper surface of the lower base plate,
And it is sandwiched close contact with the upper base plate and lower base plate, of the waterproof flange in said trough, flange portions except the groove receiving portion, and a plurality of the upper base plate, each of the upper bottom is clamped to the upper surface of the base plate in close contact between the plurality of waterproof plates waterproof coating, a plurality of said grooves receiving unit,
Each is fitted into the gap of the upper base plates, furthermore, water lower end portion of the drain groove member in each groove receiving portion is placed and fixed contact state, the waterproof plate, the roof plate portion or the balcony floor while being bent by the water bottom edge being suspended in said inside trough, the water discharge groove member is also characterized in that it is suspended is bent in said inside gutter at the water bottom edge .

[0012]

The inner gutter according to claim 1 is provided with a waterproof flange along the longitudinal direction thereof, and the waterproof flange extends from the upper end edge of the indoor side upright part of the gutter body to the roof face plate part or the balcony floor. It extends to the bottom of the water . Thus is its, according to the inner trough of claim 1 wherein, than between the roof plate portion or balcony water bottom and the inner trough of the floor can be reliably watertight, any chance a situation overflowing from rainwater inner gutter Even if it occurs, it is possible to prevent rainwater from entering the building from between the underwater of the roof face plate portion or the balcony floor and the inner gutter.

Here, if the upper edge of the outdoor standing portion of the gutter body is set higher than the roof surface or the balcony floor surface in the underwater (inner gutter according to claim 2), the outdoor side of the inner gutter. It is possible to prevent rainwater from entering the building from between the upright portion and the wall panel.

In this case, if an overflow hole is provided at a predetermined portion of the outdoor side upright portion, preferably at a position substantially at the same level as the roof surface or the balcony floor surface (inner gutter according to claim 3), Can drain the overflowing rainwater.

Further, a waterproof sheet is laid in advance around the inner gutter mounting portion, and the waterproof sheet is laid on the laid waterproof sheet.
Alternatively, if the inner gutter described in 3 is attached and the waterproof flange of the inner gutter is sandwiched between the base plate and the waterproof plate with the above-mentioned waterproof sheet in close contact, a waterproof structure around the inner gutter is provided. It is doubled, and the waterproof performance is further improved (the waterproof structure according to claim 3).

Further, the waterproof flange of the inner gutter according to claim 1, 2 or 3 is provided with a plurality of drainage members, and therefore a plurality of base plates are arranged side by side in a direction orthogonal to the depth direction of the roof or the balcony. , A waterproof plate is attached to the upper surface of each base plate, and a drainage groove member is fitted in the gap between the base plates to form a roof face plate portion or under the water on the balcony floor,
If this inner gutter is applied, the lower part of the water and the inner gutter can be reliably joined together with the help of caulking material, etc., and water tightness can be ensured (waterproof structure according to claim 4 ). Even if a situation such as an overflow occurs, it is possible to prevent rainwater from entering the building from between the lower part of the water and the inner gutter.

Further, in advance, laying a waterproof sheet in the inner gutter mounting portion around claim on the crowded floors tarp 1
Or 3 Attach the inner trough of the described water bottom base of the roof plate portion or the balcony floor, the structure of the upper and lower ply of the plurality of upper base plate and a singular or a plurality of lower base plate, the The waterproof sheet is extended to the upper surface of the lower base plate and laid, and the upper base plate and the lower base plate are tightly sandwiched,
Of the waterproof gutter of the inner gutter, the flange part excluding the groove receiving part is tightly sandwiched between a plurality of upper base plates and a plurality of waterproof plates on these upper surfaces, and the plurality of groove receiving parts are attached. ,
If they are fitted in the gaps between the upper base plates, respectively, and further, the underwater side end portions of the drainage groove members are placed and fixed in the groove receiving portions in a close contact state, the waterproof structure around the inner gutter becomes double. Since the waterproof structure between the drain groove member and the groove receiving portion is surely complete, the waterproof performance can be further improved (the waterproof structure according to claim 6 ).

Incidentally, if the underwater side edges of the waterproof plate and the drain groove member are bent so as to hang down in the inner gutter, good drainage can be achieved.

[0019]

Embodiments of the present invention will be described below with reference to the drawings.

First Embodiment FIG. 1 is an exploded perspective view showing the construction of a balcony B1 according to the first embodiment of the present invention in an exploded manner, FIG. 2 is a plan view of the balcony B1, and FIG. 2 is a vertical sectional view around the inner gutter viewed from the XX arrow direction, FIG. 4 is a vertical sectional view around the inner gutter viewed from the YY arrow direction in FIG. 2, and FIG. 2 is a vertical cross-sectional view seen from the direction of arrow ZZ of FIG. The balcony B1 of this example is a non-protruding balcony unit, which is separately assembled from a room unit in a factory in a state close to a substantially finished product, and then transported to a construction site, and the upper part of the room unit A on the lower floor. It has been installed and fixed to the above, and after being connected to the adjacent upper-floor room unit C, the construction of the rain ward is completed. That is, the balcony B1 is generally configured by attaching floor base plates 21, 21, ... And wall panels 31, 31, ... To structures such as the floor frame 20 and the wall frame 30 and the like, and further, the waterproof plates 41, 41. ,, drainage groove members (gutter) 42, 42, ..., joint material (joiner) 43, 43, ..., fitting holding members (keeper) 44, 4
4, ..., Asphalt roofing 45, inner gutter 50, and other rain-stopping members are also attached and waterproofed. As shown in FIG. 1, the floor frame 20 has a rectangular outer frame in which four long and short floor girders 22, 22, ... Made of channel steel are arranged on four sides to form a rectangular outer frame. A plurality of small beams 23, 23, ... Are bridged between the floor girders 22, 22 on the side) to form a rectangular floor framework, and wooden floor joists 24, 24, ... Are provided on the upper surface of the floor framework. Beams 23, 23, ...
It is configured to be attached in a state orthogonal to.

Here, for convenience of explanation, the waterproof structure of the balcony will be described separately for the waterproof structure for the balcony floor and the waterproof structure for the inner gutter. First, the waterproof structure of the balcony floor will be described. On the floor frame 20, as shown in FIG.
In the state where a plurality of floor base plates 21, 21, ... Such as particle boards are arranged in parallel along the beam direction (longitudinal direction) L of the balcony B1, as shown in FIG.
The upper surfaces of 4, 24, ... Are nailed and fixed. Here, as shown in FIG. 5, between the floor base plates 21 and 21 adjacent to the girder direction L of the balcony B1, between these side edge portions, a gap G along the end direction (depth direction) H of the balcony B1, G, ... Are formed. Floor base plates 21, 21, ...
Asphalt roofing 45 is laid as a secondary (lower) waterproof layer on the upper surface of G and the gaps G, G, ... Between them. Within each gap G,
A recess is formed by the asphalt roofing 45,
Drain groove members 42, 42, ... Having a concave cross section for guiding the rainwater that has entered the gap G are fitted in the recesses. A fitting holding member 44 that receives the joint material 43 is housed in each drain groove member 42.

Each drain groove member 42 is provided on both side edges in the width direction of the main body 421 having a shallow groove, and the floor base plates 21 and 21 on both sides.
Flanges 422 and 422 to be mounted on the side edge of the drain holding member 42.
The main body 421 has a size that can be accommodated in the main body 421 with play, and has a fitting concave portion 441 that receives the tip of the joint material 43 and faces upward. Each fitting holding member 44 is formed by bending a vinyl chloride steel plate, and is provided with a spring property. On the upper surface of the asphalt roofing 45, waterproof plates 41, 41, ... Of vinyl chloride steel plates, etc. are superposed on the floor base plates 21, 21 ,.
The lateral edges in the width direction are attached so as to be located on the drain groove members 42, 42. Each of the waterproof plates 41 is made of caulking material (watertight material) such as butyl rubber, and the asphalt roofing 45 and the flanges 42 of the drain groove members 42, 42.
It is adhered to 2, 422 in a watertight state to form a primary (upper) waterproof layer.

A joint material 43 made of a vinyl chloride steel plate is applied to each joint (gap) M of the waterproof plates 41, 41. Each joint material 43 has a substantially T-shaped cross section, and has a fitting protrusion 431 having a spring property that is fitted and fixed in the fitting recess 441 of the fitting holding member 44 at the center of the lower surface. The joint M of the waterproof plates 41, 41 is sealed. The waterproof plates 41, 41, ... And the joint material 43, 4 of the waterproof plates 41, 41
3, and ... form the balcony waterproof floor of this example. In addition, this balcony waterproof floor is covered with cross beams 23, 2
, 3 are slanted between the girder-side floor girders 22, 22 so that a gentle flow is generated from the indoor side to the outdoor side.

Next, the waterproof structure around the inner gutter will be described. 6A and 6B are views showing the configuration of the inner gutter used in this example, FIG. 6A is a plan view, and FIG. 6B is a partial perspective view.
The same figure (c) is a right side view, the same figure (d) and the same figure (e) are sectional views, and FIGS. 7 to 10 are views showing the procedure for waterproofing the inner gutter. As shown in FIGS. 7 (a) and 7 (b), a gutter receiving portion 60 for accommodating the inner gutter 50 so as not to be seen from the outside is provided on the outdoor side edge portion along the beam direction L of the balcony B1. The gutter receiving portion 60 is defined by the wall panel 31, the outermost floor joist 24a, and the floor frame 20 into a box shape. The inner gutter 50 is for guiding rainwater flowing on the balcony floor surface to the drain hole, and as shown in FIG. 6, a long bottom plate 51 and contour edges on the long side and short side of the bottom plate. An outdoor side standing plate 52, an indoor side standing plate 53, end standing plates 54, 54, which are bent and erected respectively, and a floor base plate 21 that protrudes substantially horizontally from the upper edge of the indoor side standing plate 53 to the indoor side. , 21, ... And a waterproof flange 55 extending to the upper surface of the lower part of the water, and the bottom plate 51 is provided with a drainage hole (gutter drop opening) 56. In this example, the inner gutter 50 is also made of a vinyl chloride steel plate.

The waterproof flange 55 includes the floor base plate 21,
The drainage groove member 4 fitted in the gaps G, G, ...
Has a plurality of groove receiving portions 57 having a concave cross-section for receiving the water-side end portions of the groove receiving portions 5, 42, ...
7, 57, ... Are adjacent to the drain groove member 42 from the drain groove member 42.
A predetermined distance corresponding to the distance up to 2 is provided so as to be separated from each other. In addition, the outdoor side standing plate 52 has its upper edge at the balcony floor surface under the water (waterproof plates 41, 41, ...
The upper side edge of the indoor standing plate 53 is set slightly lower than the balcony floor surface.

On the waterproof flange 55, the waterproof plates 41, 4 are provided.
, Are covered, and the underwater side ends of the drain groove members 42, 42, ... Are placed on the gutter receiving portions 57, 57 ,. Then, between the waterproof flange 55 and the waterproof plates 41, 41, ..., and the gutter receiving portions 57, 5
, And the drain groove members 42, 42, ... Are watertightly closed with a caulking material such as butyl rubber. Here, in the waterproof plates 41, 41, ..., the edge portions on the lower water side are bent and hung down in the inner gutter 50 to form draining pieces 41a, 41a ,. ... Also, the underwater side edge portion is bent and hung down in the inner gutter 50 so that the draining piece 42a,
42a, ... Also, the joint material 43, 43, ...
Also, the edge portion on the lower side of the water is bent down into the inner gutter 50 to form a draining piece.

Next, the waterproof construction procedure of this example will be described with reference to FIGS. First, in the factory,
When producing the balcony unit, the rain gutter members up to the inner gutter 50, the asphalt roofing 45, and the drain groove members 42, 42, ... Are attached (FIGS. 7 and 8). Next, after the balcony unit having the above-mentioned configuration is carried into the field and installed at a predetermined assembly place, the drain groove members 42, 4
The fitting holding members 44, 44, ... Are accommodated in the 2, ... (FIG. 9), and then the waterproof plates 41, 41 ,.
0). Next, the position of the fitting recess 441 of the fitting holding member 44 is aligned with each joint M of the waterproof plates 41, 41, and in this state, the joint M of the waterproof plates 41, 41 is closed with the joint material 43. The fitting protrusion 431 on the lower surface of the material 43 is fitted to the fitting holding member 4
4 is fitted and fixed in the fitting recess 441 (FIG. 5). Thereby, the joint M of the waterproof plates 41, 41 can be sealed.

As described above, according to the configuration of this example, since the waterproof flange 55 extending from the upper edge of the indoor side standing plate 53 of the inner gutter 50 to the lower part of the water on the balcony floor is provided, the water on the balcony floor is A space between the lower part and the inner gutter 50 can be closed in a watertight state. Therefore, rainwater should be fed into the gutter 50.
Even if a situation occurs in which the water overflows, rainwater can be prevented from entering the building from between the lower part of the water and the inner gutter 50. Further, since the upper edge of the outdoor side standing plate 52 is set higher than the floor surface under the water, rainwater does not enter the building from between the outdoor side standing plate 52 of the inner gutter 50 and the wall panel 31. Can be prevented.

As a modification of the above-mentioned first embodiment,
As a measure against clogging of the drainage hole (gutter drop opening) 56, if an overflow hole (not shown) is provided at a predetermined portion of the outdoor standing plate 53, preferably at a position substantially at the same level as the balcony floor surface, it overflows. Rainwater can be discharged to the outside. Further, asphalt roofing may be inserted as a secondary waterproofing layer between the gutter receiving portion 60 and the inner gutter. In this case, if asphalt roofing is laid down from the gutter receiving portion 60 to the upper surface of the floor base plate 21 below the water, and a secondary waterproofing layer may be provided between the waterproof flange 55 of the inner gutter 50 and the floor base plate 21. Furthermore, the waterproof performance can be improved.

Second Embodiment Next, a second embodiment of the present invention will be described. Figure 11
Is a balcony B2 according to the application of the second embodiment of the present invention.
12 is a plan view of the balcony B2 of FIG. 12, FIG. 13 is a vertical cross-sectional view of the inner gutter viewed from the direction of the arrow X′-X ′ of FIG. 12, and FIG. FIG. 13 is a vertical sectional view of the inner gutter viewed from the direction of the arrow Y′-Y ′ in FIG. 12. The waterproof structure around the inner gutter of the balcony B2 according to this example is greatly different from that of the balcony B1 according to the first embodiment, except that the underwater base of the balcony floor is a lower base plate 71 and upper base plates 72, 72 ,. Of the asphalt roofing 46 as a secondary waterproof layer between the gutter receiving portion 61 and the inner gutter 50 and between the lower base plate 71 and the upper base plates 72, 72 ,. This is the point inserted. In each drawing of the second embodiment, the same components as those in the first embodiment are designated by the same reference numerals to simplify the description.

That is, in the balcony B2 of this example, a lower base plate 71, upper base plates 72, 72, ..., Floor base plates 73, 73 ,. , ... are attached to form a schematic structure, and further, waterproof plates 41, 41, ..., Drain member (gutter) 4 are provided.
2,42, ..., joint fillers (joiner) 43, 43, ... (Fig.
5, the same applies hereinafter) , fitting holding members (keepers) 44, 4
4, ..., Asphalt roofing members 46, 47, and rain gutter members such as an inner gutter 50 are also attached for waterproofing. In the floor frame 70, as shown in FIG. 11, the floor frame is composed of floor girders 22, 22, ... And girders 23, 23 ,.
It is the same as that of the first embodiment in that it is composed of the following, but on the upper surface of the floor framework, in addition to the usual floor joists 24, 24, ...
The difference from the first embodiment is that 0 and 80 are also provided. The installation of the underwater floor joists 80, 80 is related to the fact that the floor base plate in the lower water has a double structure.

Here, for convenience of description, the waterproof structure of the balcony floor not including the lower part of the water and the waterproof structure around the inner gutter including the lower part of the water will be described separately. First, the waterproof structure of the balcony floor that does not include the lower part of the water will be described. As shown in FIG. 11, floor base plates 73, 73, such as particle boards, are provided on the area of the floor frame 70 that does not include the gutter receiving portion and the underwater portion.
, Are arranged in parallel along the beam direction (longitudinal direction) L of the balcony B2, as shown in FIG.
The floor joists 24, 24, ... Are nailed and fixed to the upper surface. These floor base plates 73, 73, ...
Although the floor base plates 21, 21, ... In the embodiment have the same width (same dimension in the girder direction) and the same thickness, they are shorter and smaller than those in the first embodiment in that they are not extended to the lower part of the water. is there.

Asphalt roofing 47 is laid as a secondary waterproof layer in the upper surfaces of the floor base plates 73, 73, ... And between the floor base plates. A recess is formed by an asphalt roofing 47 in each gap, and the drain groove member 42 accommodating the fitting holding member 44 is formed in the recess.
42, ... Are fitted (FIGS. 19 to 21). On the upper surface of the asphalt roofing 47, waterproof plates 41, 41, ...
, And the side edges in the width direction are located above the drain groove members 42, 42 (FIGS. 11 and 22). Each waterproof plate 41 is
Water-tightly bonded to the asphalt roofing 47 and the flanges of the drain members 42, 42 with caulking material 1
Configure the next waterproof layer. Each joint M of the waterproof plates 41, 41 is
It is sealed by a joint material 43 made of vinyl chloride steel plate.

Next, the waterproof structure around the inner gutter including the lower part of the water will be described. In the lower part of the water of this example, FIG.
As shown in 4, the floor joists 24, 2 in the area not under the water
A pair of underwater floor joists 80, 80, which are as thin as one base plate than 4, 4, are attached in parallel while maintaining an interval of about the lateral width of the inner gutter 50. The pair of underwater floor joists 80 and 80 also have a relationship in which the outermost floor joist and the second outermost floor joist face each other. And
By one underwater floor joist 80 which is the outermost floor joist,
The gutter receiving portion 61 is defined, and the underwater floor joist 80 on the other side abuts the normal floor joist 24 which is the third floor joist from the outermost side to form a step portion.

A lower base plate 71 such as a particle board is placed and fixed between the pair of underwater floor joists 80, 80. This lower base plate 71 is in the beam direction L of the balcony B2.
It is a long single plate (Fig. 11), and when the indoor side surface is applied to the side surface of the normal floor joist 24 that constitutes the above-mentioned step portion, the outdoor side surface is the outermost underwater surface. Floor joist 8
The width dimension is set to be substantially flush with the outdoor side surface of 0 (FIG. 13). At the same time, the thickness dimension is set so that the upper surface of the lower base plate 71 and the upper surface of the floor joist 24 forming the step portion are substantially flush with each other (the same figure).

An asphalt roofing 46 is laid on the upper surface of the lower base plate 71, and an upper base plate 72 such as a particle board is placed on the asphalt roofing 46 as shown in FIGS. 11 and 13. , 7
2, ... are placed and fixed in a state in which a plurality of sheets are arranged in parallel along the beam direction L of the balcony B2. Here, the size of each upper base plate 72 in the end direction (depth direction) H is set to be the same as that of the lower base plate 71, and the beam direction L
Are set to have the same size and thickness as the floor base plate 73. Then, as shown in FIG. 11, the floor base plate 73 and the upper base plate 72 are superposed in the end direction H, and are arranged as if they were one floor base plate. Therefore, the underfloor plate 7 in which the drain groove members 42, 42, ... Are on the same straight line as each other.
It is fitted in the gaps 3, 3 and the gaps between the upper base plates 72, 72.

The asphalt roofing 46 serves as a secondary waterproofing layer over a wide range from a portion corresponding to the upper end of the outdoor standing plate 52 of the inner gutter 50 to the upper surface of the lower base plate 71, and if necessary, It is also laid while using caulking material. The inner gutter 50 is stored in a fitted state in a gutter receiving portion 61 in which the asphalt roofing 46 is laid while the waterproof flange 55 is placed on the upper surface of the upper base plates 72, 72, .... ing.

On the waterproof flange 55, the waterproof plates 41, 4 are provided.
, Are covered, and the underwater side ends of the drain groove members 42, 42, ... Are placed on the gutter receiving portions 57, 57 ,. Then, between the waterproof flange 55 and the waterproof plates 41, 41, ..., and the gutter receiving portions 57, 5
, And the drain groove members 42, 42, ... Are watertightly closed with caulking material. Here, the waterproof plate 41,
, 41, ... are water-draining pieces 41a, 41a, ...
In the drainage gutter members 42, 42, ...
It hangs down inside to form draining pieces 42a, 42a, .... Further, the joint material 43, 43, ... Also has the edge portion on the lower water side bent and hung down in the inner gutter 50 to form a draining piece.

Next, the waterproof construction procedure of the balcony floor of this example will be described with reference to FIGS. Figure 1
Reference numeral 5 shows a balcony unit before waterproofing, which has been assembled to a state close to a finished product in a factory, and has ordinary floor base materials 73, 73, ... And a lower base material 71 under the water. , Normal floor base materials 73, 73,
, And a lower base material 71 under the water. A gutter receiving portion 61 is also defined at the outdoor side edge portion, and an unillustrated sluice for connecting the inner gutter 61 and a gutter (not shown) is attached to the lower surface of the gutter receiving portion 61. ing. In such a configuration, first, the asphalt roofing 46 is laid on the gutter receiving portion 61 (FIG. 16). At this time, the asphalt roofing 46 is made to sufficiently and uninterruptedly reach the upper surface of the lower base material 71 under the water (the same figure). After this, the inner gutter 50 is attached to the gutter receiving portion 61.
It is housed inside, and its drain hole 56 is connected to the upper opening of a gutter (not shown) (FIG. 17).

Next, the outdoor side edge portions of the upper base plates 72, 72, ... Are connected to the lower base plate 71 (strictly speaking, the lower base plate 71).
While inserting it diagonally from above into the gap between the upper asphalt roofing 46) and the waterproof flange 55 of the inner gutter 50, the lower base plate (strictly speaking, the asphalt roofing 46)
On top of. Then, while sliding each upper base plate 72 to the left and right, the indoor side end face thereof is superposed on the outdoor side end face of the floor base plate 73 (FIG. 18). Next, the asphalt roofing 47 is seamlessly laid on the floor base plates 73, 73, ... And the upper base plates 72, 72 ,.
9) At this time, the drain groove member 4 is provided in the recess of the asphalt roofing 47 which is continuously linearly formed from the gap between the floor base plates 73, 73 to the gap between the upper base plates 72, 72.
2, 42, ... Are fitted (FIG. 20). Then, the fitted drainage groove members 42, 42, ... Are slid in the gap, and the water draining pieces 42a, 42a, .. are closely opposed to the indoor side standing plate 53 of the inner gutter 50 from within the inner gutter 50. It is hung down to the state (Fig. 20). At this time, each drain groove member 42
The caulking material is filled with water so as to prevent a gap from being formed between the groove receiving portion 57 and the groove receiving portion 57 of the waterproof flange 55 which receives the water. Up to this point is the work in the factory.

Next, after the balcony unit having the above-mentioned configuration is carried into the field and installed at a predetermined assembly place, the fitting holding members 44, 44, ... Are housed in the drain groove members 42, 42 ,. 21) After that, asphalt roofing 47
The waterproof plates 41, 41 are covered on the upper surface of the so that the side edges in the width direction thereof are located above the drain groove members 42, 42. Then, each waterproof plate 41 is slid in the end-to-end direction H, and the draining piece 41a on the underwater side is hung down from the inside of the inner gutter 50 so as to face and face the indoor standing plate 53 of the inner gutter 50 (FIG. 22). At this time, caulking material is filled to make watertight so that no gap is created between each waterproof plate 41 and the waterproof flange 55 that receives the waterproof plate. Next, the waterproof plates 41, 41
The position of the fitting concave portion of the fitting holding member 44 is aligned with each joint M of the joint M, and in this state, the joint M of the waterproof plates 41, 41 is made of joint material.
The fitting projection on the lower surface of the joint material, and the fitting holding member 4
It is fitted and fixed in the fitting recess of No. 4. This completes the waterproofing of the balcony floor.

As described above, according to the configuration of this example, since the inner gutter 50 is provided with the waterproof flange having the same configuration as that of the first embodiment, the same effect as that described in the first embodiment can be obtained. be able to. In addition, asphalt roofing as a secondary waterproof layer is laid in a wide range from under the inner gutter to under the water, so that it is between the waterproof plate and the inner gutter (waterproof flange) or the drain groove member. Even if a caulking break occurs between the inner gutter and the inner gutter (groove receiving part), it is possible to more reliably prevent water leakage.

Although the embodiment of the present invention has been described in detail above with reference to the drawings, the specific structure is not limited to this embodiment, and there are design changes and the like within a range not departing from the gist of the present invention. Also included in the present invention. For example, the secondary waterproofing layer is not limited to asphalt roofing, but may be another waterproof sheet. The caulking material is not limited to butyl rubber. In addition, in the above-mentioned embodiment, the installation of the inner gutter (see FIG.
Although the case where the upper base material is attached after 7) is described (FIG. 18), it is of course possible to install the inner gutter after the upper base material is attached instead. Further, in the above embodiment, the inner gutter, the asphalt roofing, and the drain groove member are factory-installed. However, it is optional depending on the situation whether the arbitrary rain-sealing member is factory-installed or locally installed.
The present invention can be applied not only to balconies but also to flat roofs. Further, in the case of using a single waterproof plate, or in the case of a waterproof structure in which no joint gap is created, the groove receiving portion of the waterproof flange can be omitted.

[0044]

As described above, according to the configuration of the present invention, the waterproof flange can be used to seal between the underwater portion of the roof face plate portion or the balcony floor and the inner gutter. Therefore, even if rainwater overflows from the inner gutter, it is possible to prevent the rainwater from entering the building from between the lower part of the water and the inner gutter. In addition, if asphalt roofing as a secondary waterproof layer is laid in a wide range from under the gutter to under the gutter, the waterproof between the gutter of the roof face plate part or the balcony floor and the gutter will be improved. Even if some inconvenience occurs in the processing, it is possible to reliably prevent water leakage.

[Brief description of drawings]

FIG. 1 is an exploded perspective view showing an exploded configuration of a balcony according to a first embodiment of the present invention.

FIG. 2 is a plan view showing the configuration of the balcony.

FIG. 3 is a cross-sectional view showing a waterproof structure around an inner gutter viewed from the direction of arrow XX in FIG.

FIG. 4 is a cross-sectional view showing a waterproof structure around an inner gutter viewed from the direction of the arrow Y-Y in FIG.

5 is a vertical sectional view as seen from the direction of arrow Z-Z in FIG.

FIG. 6 is a diagram showing a configuration of an inner gutter used in the embodiment,
The figure (a) is a plan view, the figure (b) is a partial perspective view, the figure (c) is a right side view, and the figures (d) and (e) are sectional views.

FIG. 7 is a diagram showing a waterproof construction procedure for the inner gutter according to the embodiment.

FIG. 8 is a diagram showing a waterproof construction procedure for the inner gutter according to the embodiment.

FIG. 9 is a view showing a waterproof construction procedure for the inner gutter according to the embodiment.

FIG. 10 is a diagram showing a waterproof construction procedure for the inner gutter according to the embodiment.

FIG. 11 is an exploded perspective view showing an exploded configuration of a balcony B2 according to the application of the second embodiment of the present invention.

FIG. 12 is a plan view showing the configuration of the balcony.

FIG. 13 is a vertical cross-sectional view around the inner gutter viewed from the X′-X ′ arrow direction of FIG. 12.

14 is a vertical cross-sectional view around the inner gutter viewed from the direction of the arrow Y′-Y ′ in FIG.

FIG. 15 is a perspective view showing the vicinity of the gutter mounting portion of the balcony unit before waterproofing, which is assembled to a state close to a substantially completed product.

FIG. 16 is a view showing a waterproofing procedure for the inner gutter according to the embodiment and showing how an asphalt roofing is laid on a gutter mounting portion or the like.

FIG. 17 is a view showing a waterproof construction procedure around the inner gutter in the embodiment, showing a state in which the inner gutter is installed in the gutter receiving portion.

FIG. 18 is a view showing a waterproofing procedure for the inner gutter according to the embodiment and showing how the upper base plate is placed on the lower base plate.

FIG. 19 is a view showing a waterproofing procedure for the inner gutter according to the embodiment and showing how asphalt roofing is laid on a floor base plate or the like.

FIG. 20 is a view showing a waterproofing procedure for the inner gutter according to the embodiment and showing how the fitting holding member is attached.

FIG. 21 is a view showing a waterproofing procedure for the inner gutter according to the embodiment and showing how the fitting holding member is housed in the groove of each drain groove member.

FIG. 22 is a view showing a waterproofing procedure for the inner gutter according to the embodiment and showing a state in which a waterproof plate is covered.

FIG. 23 is a plan view showing a waterproof structure of a conventional balcony unit.

24 is a sectional view taken along the line VV of FIG.

FIG. 25 is a diagram for explaining the conventional technique.

FIG. 26 is a diagram for explaining the conventional technique.

[Explanation of symbols]

B1, B2 Balcony 21, 73 Floor base plate (base plate) 24a Outermost floor joist 41 Waterproof plate 41a Waterproof plate draining piece 42 Drain member 42a Drain member draining piece 45, 46, 47 Asphalt roofing (waterproof sheet) 50 Inner gutter 52 Outdoor side standing plate (outdoor side standing part) 53 Indoor side standing plate (indoor side standing part) 55 Waterproof flange 56 Drain hole 57 Groove receiving part 60, 61 Gutter receiving part (inner gutter mounting part) 71 Lower side Base plate 72 Upper base plate 80 Underfloor floor joist

Claims (6)

(57) [Claims] 1. An inner gutter that is internally mounted along the edge of the roof or balcony on the outdoor side and receives rainwater flowing on the roof surface or the balcony floor surface and guides it to a drain hole, the inner gutter having a concave cross section. Along the longitudinal direction of the gutter body, and
The gutter body has a waterproof flange that protrudes substantially horizontally from the upper edge of the indoor side upright portion to the indoor side and extends to the upper surface of the underwater side edge of the base plate that constitutes the base of the roof face plate part or the balcony floor. However , if it is on the roof surface plate or balcony floor,
Along the depth direction of the roof plate or balcony floor,
One, a plurality of drains arranged at a predetermined distance from each other
A plurality of concave sections for receiving each underwater end of the member
An inner gutter having a groove receiving portion . 2. The gutter body is configured such that an upper edge of an outdoor standing portion along a longitudinal direction is set higher than a roof surface or a balcony floor surface in a submerged area, while an upper edge of an indoor standing portion is the roof surface. Alternatively, the inner gutter according to claim 1, which is set to be slightly lower than a floor surface of the balcony. 3. The inner gutter according to claim 2, wherein an overflow hole is formed in the standing portion on the outdoor side of the gutter body at a position substantially at the same level as the roof surface or the balcony floor surface. . 4. A waterproof structure around the inner gutter of a roof or a balcony in which the inner gutter according to claim 1, 2 or 3 is internally attached to an outer side edge portion, wherein a waterproof flange of the inner gutter is provided. Among them, a plurality of base plates in which the flange portion excluding the groove receiving portion is juxtaposed in a direction orthogonal to the depth direction of the roof or balcony, and a plurality of waterproof plates for waterproofly covering the upper surface of each base plate. And a plurality of the groove receiving portions are respectively fitted in the gaps between the base plates, and further, the underwater side end portion of the drain groove member is brought into a close contact state with each groove receiving portion. Placed and fixed, the waterproof plate is bent at the lower water edge of the roof face plate portion or the balcony floor and hung down in the inner gutter, while the drain groove member is also attached to the lower water edge. It is bent and bent so that it hangs in the inner gutter. Waterproof structure around the inner gutter of the roof or balcony. 5. A waterproof sheet is laid around the inner gutter mounting portion along the outdoor side edge portion, and the waterproof sheet is placed on the waterproof sheet.
A waterproof structure around the inner gutter of a roof or balcony to which the inner gutter according to 2 or 3 is attached, wherein the waterproof sheet is on a lower surface of a roof plate or a base plate constituting a base of a balcony floor below the water. The waterproof flange of the inner gutter is tightly sandwiched between the base plate and a waterproof plate that covers the upper surface of the base plate through the waterproof sheet, and the waterproof flange A watertight structure around the inner gutter of the roof or the balcony, wherein the plate is bent at the underwater side edge of the roof face plate portion or the balcony floor and hangs down in the inner gutter. 6. A waterproof sheet is laid around the inner gutter mounting portion along the outdoor side edge portion, and the waterproof sheet is placed on the waterproof sheet .
A waterproof structure around the inner gutter of the roof or balcony to which the inner gutter described in 2 or 3 is attached, in which the underwater base of the roof face plate portion or the balcony floor is orthogonal to the depth direction of the roof or balcony. It is composed of two upper and lower upper base plates and a single or a plurality of lower base plates that are arranged side by side, and the waterproof sheet is laid extending to the upper surface of the lower base plate. In addition, the waterproof gland of the inner gutter, which is sandwiched between the upper base plate and the lower base plate in close contact with each other, includes a plurality of upper base plates and respective upper and lower base plates. The upper surface of the base plate is tightly sandwiched between a plurality of waterproof plates for waterproof coating, and the plurality of groove receiving portions are fitted into the gaps between the upper base plates, respectively, and further, the groove receiving portions are provided with The underwater end of the drainage gutter is tight The waterproof plate is mounted and fixed in a worn state, and the waterproof plate is bent at the edge of the lower water portion of the roof face plate portion or the balcony floor and hung down in the inner gutter, while the drain groove member is also the lower water portion. A waterproof structure around an inner gutter of a roof or a balcony, which is bent at an edge and hangs inside the inner gutter.