JP2004225457A - Balcony draining device and water collecting basin for the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a balcony draining device which prevents dripping of rainwater or condensation liquid water that has not been introduced into a rain gutter, from a deck. <P>SOLUTION: According to the balcony draining device, the rain gutter 15 opening upward is sequentially arranged under a floor joist bearer 4 from a lower side of a left end beam 2 to a lower side of a right end beam 2, and an eave soffit plate 17 extending along a lower side of each floor joist 11 of the deck in a manner declining from a lower surface of a front girder to an opening surface of the rain gutter, is sequentially arranged from a lower surface of the left end beam to a lower surface of the right end beam. Thus rainwater or condensation liquid water dripping from the deck or the floor joists, and rainwater or condensation liquid water dripping from the floor joist bearer, the end beams, and the front girder are all received by the eave soffit plate and converged to the rain gutter 15, and the rainwater or the condensation dew converged to the rain gutter is drained via a downpipe 25 to the ground. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a drainage device for a balcony made using a metal profile such as an aluminum alloy.
[0002]
[Prior art]
In balconies made of metal profiles, a drainage device is provided for guiding rain to the ground without draining rain falling on the deck below the deck.
However, the drainage device of the conventional balcony has a rain gutter (hereinafter, sometimes referred to as a rear gutter) formed by hanging the rain falling on the deck upper surface from the periphery of the deck, and a rain gutter (hereinafter, referred to as a gutter) formed on a girder beam. Or a rain gutter formed on the front girder (hereinafter sometimes referred to as a front gutter). Was to be drained to the ground.
[0003]
For example, Japanese Patent Application Laid-Open No. H11-163873 discloses that after receiving rainwater flowing out from the rear end portion of the deck upper surface (engine end), the rear gutter provided on the joist or the rear gutter provided on the rear deck material. The rainwater flowing down from the side gutter provided on the girder is received by the side gutter and flows out from the front end (front girder side end) on the deck upper surface. Rainwater is received by the front gutter provided on the front end deck material, merges with the side gutter from the front gutter, and rises above the ground via a storm gutter or a call gutter connected to the side gutter and a rainwater guiding member such as a vertical gutter or a water conveyance chain. The one described in Patent Literature 2 is provided with a collecting gutter at a position one step lower than the side gutter of the skeleton, and collects rainwater collected on both side gutters further into the collection gutter, and through a rainwater guiding member. In addition, the one described in Patent Document 3 is a deck All assembled into trough before provided to the front spar rain water was flowing down the side trough from the end, in which so as to drain to the ground through the rainwater guide member from the previous trough.
[0004]
[Patent Document 1]
JP-A-58-40618 [Patent Document 2]
JP-A-8-209870 [Patent Document 3]
JP-A-12-27383
[Problems to be solved by the invention]
The above prior arts all have a drainage function for rainwater that flows down from the periphery of the deck to the rain gutter, but rainwater that does not enter the rain gutter is dripped from the lower surface of the deck or the like. In other words, when the deck is constructed by abutting and connecting a plurality of deck materials, the rainwater on the upper surface of the deck passes down the minute gap between the deck materials, and goes down from the lower surface of the deck or around the joist to the lower part of the deck. Dropping is inevitable. In a balcony using a metal profile, rainwater is transmitted from a component such as a handrail, a lattice, or a panel above a deck to a girder, a joist or a front girder, or dew is generated. However, such rainwater or dew water often does not enter the gutter.
In a conventional balcony, no countermeasures are taken against such water leakage from the lower surface of the deck or dripping water from the girder or the front girder.
[0006]
Patent Document 4 describes a drainage device for a balcony in which an eaves top plate is provided below a joist and a drip plate provided near a front end of the eaves top plate flows down to a rain gutter. However, the eaves only cover the lower surface of the deck, and the rain gutter is exposed below the deck, which impairs the appearance of the balcony. In addition, although it has a drainage function for rainwater flowing down from the gap between the deck materials made of a gutter, rainwater flowing out from the periphery of the deck and rainwater flowing down through components above the deck, It does not have a drainage function for dew condensation water dropped from the front girder.
[0007]
[Patent Document 4]
JP-A-53-63717
The present invention has been made in view of the above points, and a first problem thereof is that rainwater or dew condensation water that does not enter a rain gutter provided on a balcony component such as a girder drip below a deck. It is an object of the present invention to provide a drainage device for balconies which is prevented from being used.
[0009]
A second object of the present invention is to provide a minimal drainage member without causing water entering a rain gutter provided in a balcony component member and water not entering the rain gutter to drop below a deck. The purpose of the present invention is to make it possible for drainage to be drained smoothly.
[0010]
A third object of the present invention is to provide a water collecting mass suitable for use in a balcony drainage device that solves the second problem.
[0011]
[Means for Solving the Problems]
In order to solve the first problem, the invention according to claim 1 provides a rain gutter below the joists that continuously opens from the lower side of the left girder to the lower side of the right girder. At the same time, an eaves top plate extending downward from the lower surface of the front girder to the opening of the rain gutter extending downward from the lower side of the joist of the deck is connected from the lower surface of the left girder to the lower surface of the right girder. Rainwater or dewdrops hanging from the deck or joist, the joists, the girder and the front girder are all received by the eaves top plate and merged with the raingutter. Rainwater or condensed water that has merged into the ground is drained to the ground through a vertical gutter.
With the above configuration, rainwater dripping through the minute gap between the deck materials, dew condensation water dripping from the joist, joist hanging, rainwater dripping from the girder or the front girder, connection between the girder and the joist or the front girder All the dew water leaking from the part is received by the eaves top plate, guided to rain gutters provided below the joists, and drained to the ground via vertical gutters.
[0012]
In order to solve the second problem, the invention according to claim 2 is characterized in that rainwater flowing from a front end of the deck upper surface flows into a rain gutter provided on the inner side surface of the deck of the girder beam, and a front girder side of the deck upper surface is provided. The rainwater flowing out from the end is caused to flow into the rain gutter provided on the inner surface of the deck of the front girder or the deck material at the front end, and from the longitudinal end of the gutter to join the gutter of the girder, A water collecting mass is attached to a joint between the rain gutter and the vertical gutter provided below the hook, and the rainwater that has joined the rain gutter of the girder is guided to the water collecting mass by the calling gutter, and the water from the calling gutter is discharged from the collecting gutter. It is characterized in that water and water in a rain gutter provided below the joist are merged in a water collecting mass and flow down to the vertical gutter.
In this case, the side gutter may be formed integrally with the girder or may be formed separately from the girder. Further, the girder beam may be either horizontally installed or installed to be inclined downward to the outdoor side. With the above configuration, the rainwater flowing out from the side end of the deck upper surface flows into the side gutter, and the rainwater flowing out from the front end of the deck upper surface flows into the front gutter, joins the side gutter, and flows into the side gutter. Rainwater is guided to the water collecting mass provided in the rear gutter via the call gutter, merges with the rainwater or dew water flowing into the rear gutter from the rear end of the eaves top plate at the water collecting mass, and passes through the vertical gutter. Drained to the ground.
[0013]
The drainage device for solving the second problem is mounted on the inner surface of the deck of the girder with a rain gutter formed separately from the girder so that the gutter side is higher and the front girder side is lower. The rainwater flowing out of the front end of the deck upper surface flows into the rain gutter, and the rainwater flowing into the rain gutter through a call gutter coupled near the front girder end of the rain gutter is collected into a collecting mass. It can be configured to merge.
With the above configuration, the rainwater flowing out from the front end of the deck upper surface and received by the side gutter smoothly flows toward the outdoor side end of the side gutter, and is smoothly guided in the rear gutter direction via the call gutter. Therefore, it is excellent in drainage.
[0014]
The drainage device for solving the second problem further has a rain gutter formed separately from the girder on the deck inner surface of the girder, and is inclined so that the joist side is higher and the front girder side is lower. Rainwater flowing out from the front end of the deck upper surface into the rain gutter of the girder, and rainwater flowing out from the front girder end of the deck upper surface is provided on the inner side surface of the deck of the front girder. A gutter or a rain gutter formed on a deck material at a front end thereof flows into the rain gutter from the longitudinal end of the gutter and merges with the gutter of the girder, and a front girder end of the gutter from the gutter. It is also possible to configure so as to join the water collecting mass via a call gutter connected to the vicinity.
With the above configuration, rainwater flowing out from the front end of the deck upper surface is received by the side gutter, and the rainwater smoothly flows toward the outdoor side end of the side gutter, and is guided smoothly toward the rear gutter through the call gutter. The rainwater flowing out from the front girder end of the deck upper surface is received by the front gutter, and the rainwater merges with the side gutter, and is smoothly guided from the side gutter to the collection gutter of the rear gutter through the call gutter. It is excellent in drainage because it joins.
[0015]
The water collecting mass for solving the third problem includes a concave portion that opens on the upper surface, a coupling cylindrical portion that projects downward from the bottom of the concave portion and penetrates vertically, and is connected to a vertical gutter; And a positioning piece that fits into the lower elbow of the call gutter and that stands on the bottom surface of the coupling tube at intervals around the hole of the coupling cylinder portion.
According to the above configuration, the water collecting mass is attached to the joint between the rain gutter and the vertical gutter provided below the joist, and the lower elbow of the call gutter connected to the gutter's rain gutter is inserted into the concave portion of the water collecting mass. The positioning piece can be fitted to the lower elbow and fixed at a predetermined position, and the water flowing through the call gutter and the water collected by the rain gutter provided below the joist are joined by the water collecting mass and set up. Run down the gutter.
[0016]
BEST MODE FOR CARRYING OUT THE INVENTION
Next, a preferred embodiment of the present invention will be described with reference to the drawings.
1 is a vertical sectional view of a balcony provided with a drainage device according to the present invention, FIG. 2 is a sectional view taken along line XX of FIG. 1, FIG. 3 is a perspective view of a water collecting mass, and FIG. FIG. 5 and FIG. 5 are cross-sectional views taken along line YY in FIG.
[0017]
Attachment fittings 1 (see FIG. 2) are fixed to predetermined positions on the left and right sides of the outer wall surface of the frame B by screwing or welding, and the attachments are attached to the hollow portion 2a of the girder beam 2 made of a hollow profile. The girder 2 extending in the direction away from the skeleton B is mounted horizontally by inserting and screwing the screw S1 into the tip fitting 1 from the center of the deck of the girder 2. At a plurality of locations between the left and right metal fittings 1, the joist fixing brackets 3 (see FIG. 1) are fixed to the skeleton B, and the joist fixing 4 is screwed into the joist fixing brackets 3 by screws S2. Mounted horizontally.
[0018]
The joist rack 4 includes a front portion 4a in which a screw S2 is passed through the center portion of the bracket against the front surface of the joist fixing bracket, a drain portion 4b bent upward from the front portion toward the skeleton side, and a A lower surface 4c, which is horizontally bent from the lower end to the skeleton side and covers the lower surface of the joist fixing bracket 3, and a joist mounting portion 4d, which projects from the lower end of the front portion in the outdoor direction and mounts a joist 5 described later, are integrally formed. Have. The joist hanger 4 is fixed to the joist hanger fixing bracket 3 in a state where both longitudinal ends of the joist hanger 4 are in contact with opposing surfaces of the end of the end beam 2 on the skeleton side.
[0019]
The girder beam 2 may be one in which rain gutters (side gutters) are integrally formed on the opposing surfaces thereof as in the conventional product. However, in the preferred embodiment of the present invention, the girder beams 2 The rain gutter (side gutter) 5 formed separately from each girder is attached by, for example, screws, although the mounting method is not limited.
The side gutter 5 includes an outer vertical wall 5a abutting on the inner side surface of the deck of the girder 2, a bottom wall 5b extending inward from the middle of the outer vertical wall in the height direction, and an outer vertical wall of the bottom wall. An inner vertical wall 5c extending in the vertical direction on the side opposite to the wall, a groove 5d formed by the outer vertical wall 5a, the bottom wall 5b, and the inner vertical wall 5c, and an upper end of the outer vertical wall Protrusions 5f, 5g, and 5h are formed at the upper and lower ends of the portion and the inner vertical wall, and are bent horizontally toward the center of the deck.
The side gutter 5 is tilted so that the front girder 6 side is lower than the joist hanging side of the girder 2, and the outer vertical wall 5 a and the inner side wall 2 b of the girder 2 are screwed (not shown). It is fastened and attached. The protruding edge 5h at the lower end of the inner vertical wall 5c of the side gutter 5 is placed on a joist mounting portion 4d with a joist, and the protruding edge 5h and the joist mounting portion 4d are fastened by a bolt nut S3. I have.
[0020]
A front spar 6 is connected between the outdoor side ends of the left and right girder beams 2. More specifically, the front spar 6 is made of a hollow material, a side 7a of a front spar fixing bracket 7 having an L-shaped cross section is inserted into the hollow portion 6a, and a screw S4 penetrating through an inner wall 6b of the front spar 6 is formed. Is screwed into one side 7 a, and the other side 7 b of the front girder fixing bracket 7 abuts on the facing surface of the outdoor side end of the girder 2, that is, the inner vertical wall 2 b, and the outdoor side end of the hollow portion 2 a of the girder 2 By screwing the screw S5 through the inner vertical wall 2b from the portion and screwing it into the other side 7b of the front girder fixing bracket, the longitudinal end surface of the front girder 6 is joined to the inner surface of the deck of the end beam 2 in close contact. .
[0021]
At the lower part of the inner surface of the deck of the front girder 6, a joist mounting portion 6c is protruded over the entire length in the longitudinal direction of the front girder, and an inner vertical wall 5c at an end opposite to the frame of the side gutter 5 is provided. Is mounted on the joist mounting portion 6c, and the protruding edge 5h and the joist mounting portion 6c are fastened by the bolt nut S3.
[0022]
The groove 5d of the side gutter 5 has the end face on the joist hanging side and the end face on the front girder side sealed with the fore-edge closing 8a, 8b. Thereby, the longitudinal end of the side gutter 5 is sealed, and a side gutter that opens only upward is configured. A rainwater drop 5i is formed in the bottom wall 5b near the front girder end of the groove 5d, and the rainwater drop 5i is connected to the upper end of the call gutter 10 via the upper elbow 9a. Is extended to a position near the lower part of the joist rack 4, and a lower elbow 9b is connected to a lower end thereof.
[0023]
A joist 11 is arranged between the end beams 2 at a required interval, and one end of each joist is mounted on the joist mounting portion 4d of the joist rack 4 and the other end is mounted on the joist mounting portion 6c of the front spar 6. The side gutter 5 is fastened to the joist 4 and the front spar 6 by the same bolt nut S3. The upper surface of each joist is on a common inclined plane with the protruding edge 5g of the upper end of the inner vertical wall 5c of the side gutter attached to the left and right girder beams.
[0024]
In this state, the first deck material 12 is placed on the upper surface of each of the joists 11 and the protruding edge 5g on the skeleton side, and abuts on the fore block 8a which projects slightly above the protruding edge 5g in the framing direction and serves as a starter. Slide until stopped. After that, as in the conventional case, the other deck members 12 are sequentially placed and adhere to each other, and are fixed to the joists by the same method as in the conventional case.
[0025]
In FIG. 1, reference numeral 13 denotes a draining plate fixed to the skeleton above the joists and inclined downward in the outdoor direction, and the front end of which is formed in a groove 12a formed in the deck material 12 at the rear end (most skeleton side). Has been inserted. Therefore, the rainwater flowing out from the end of the deck on the skeleton side flows down into the groove 5d of the side gutter 5 via the groove 12a.
In FIG. 1, reference numeral 14 denotes a rain gutter which is fixed to the inner surface of the deck of the front girder and receives rainwater flowing out from the front end of the deck material 12 at the front end (most outdoor side). Is facing the groove 5d of the side gutter 5. Therefore, the rainwater flowing out from the outdoor end of the deck flows down through the front gutter 14 into the groove 5d of the side gutter 5.
[0026]
With the above configuration, rain falling on the upper surface of the deck is collected in the side gutter 5 in any case, and is guided from the upper elbow 9a to the lower elbow 9b via the call gutter 10.
[0027]
A rear gutter 15 having a length substantially equal to the distance between the girder beams 2 on both sides is attached near the outdoor side surface of the frame B below the joist rack 4. The rear gutter 15 is formed in a substantially C-shaped cross section, and the upper fixing portion 15a is connected to the lower surface portion 4c of the joist mount 4 with a screw or a bolt nut S6, and the vertical portion 15b is brought into contact with the outer surface of the frame. A groove 15e that is open in the upward and outdoor directions is formed by the bottom portion 15c, the upright wall 15d provided at the tip thereof, and the vertical portion 15b. Both ends in the longitudinal direction of the groove 15 e are sealed by a fore-end closing 16.
[0028]
The lower surface of the double beams 2 and the lower surface of the front girder 6 are on a common horizontal plane, and the upper end of the upright wall 15d of the rear gutter 15 is thicker than the common horizontal plane. At a position lower by a distance equal to. As shown in FIGS. 1 and 2, the eaves top plate 17 is connected between the lower surface of the left girder 2 and the lower surface of the right girder 2. The eaves top plate 17 is composed of a metal spandrel with a shallow groove used for an outer wall of a building or an eaves or an indoor ceiling plate, and has one longitudinal end screwed to the lower surface of the front spar 6 or an eaves top plate. And the other end of the eave-top is placed on the upper end of the upright wall 15d of the rear gutter 15 by screwing or the end of the eave-top. It is fixed by a screw or the like S7 via a cover member 19 covering the portion. Watertightness is secured between the eaves-top plates by overlapping the eaves-top plates on the outside of the groove of the eaves-top plate and connecting them with screws S8 at the overlapped portion.
[0029]
In this case, the skeleton side end of each eave top plate 17 is terminated near the front girder end of the groove 15 e of the rear gutter 15, and the lower surface of the front girder 6 and the upright wall 15 d of the rear gutter 15 are formed. Due to the difference in the height of the upper end, the eaves top plate 17 is mounted with the groove facing upward and inclined downward in the rear gutter direction, and therefore has drainage. The eave top plate extends from the lower surface of the girder 2 and the lower surface of the front spar 6 so as to block the entire lower part of the deck, and the rear gutter 15 blocks the lower part of the joist. Therefore, even if the rainwater falling on the deck upper surface may pass through the minute gap between the deck materials, or the condensed water may drop from the metal members such as the joists, the girder beams, the front girders and the joists. Even so, all of the rainwater or dew condensation is collected in the rear gutter 15 by the eaves top plate.
[0030]
Further, a hole is formed below the lower elbow 9bc in the bottom wall of the groove 15e of the rear gutter 15, and a water collecting mass 20 is attached to the hole. As shown in FIGS. 3 to 5, the water collecting mass 20 has a concave portion 21 that opens upward in the center, has mounting portions 22 on both sides of the upper surface of the concave portion, and also has a downward portion from the central bottom of the concave portion. It has a connecting cylindrical portion 23 that protrudes and penetrates in the vertical direction. A plurality of positioning pieces 24 are provided on the bottom surface of the concave portion 21 so as to stand along a circular arc having a common center with the hole around the hole of the cylindrical portion 23. Then, as shown in FIG. 5, the lower end of the lower elbow 9 b is inserted into the concave portion 21 of the water collecting mass, and the lower end of the lower elbow 9 b is inserted into the positioning piece 24 between the positioning piece 24 and the bottom surface of the concave portion 21. Are fitted to form. The upper end of the vertical gutter 25 is connected to the lower end of the connecting cylindrical portion 23 of the water collecting mass 20.
[0031]
In this way, the rainwater guided through the call gutter 10 and the water flowing on the upper surface of the eaves top plate 17 join at the water collecting mass 20 and are drained to the ground via the vertical gutter 25. . Therefore, the underside of the deck is concealed by the eaves top plate, and the joists and the gutters are not exposed, so that the appearance of the bottom surface of the balcony is improved.
[0032]
In the above embodiment, since the side gutter is formed separately from the girder and is attached to the girder so as to be inclined downward in the outdoor direction, drainage of rainwater flowing out from the deck upper surface is good. However, the present invention is also applicable to a balcony having a conventional structure in which a side gutter is integrally formed with a girder. In addition, the end of the eaves top on the girder beam side covers up to the middle of the lower surface of the girder beam, but is arranged so as to cover the entire lower surface of the girder beam as in the case of the front girder. Is also good. Further, the mounting structure for the joist hanging frame, the shape of the eaves top plate, and the mounting structure for the girder and the front girder are merely examples, and other known mounting structures may be adopted.
[0033]
【The invention's effect】
As described above, according to the first aspect of the present invention, water that has not entered the rain gutter of the balcony component is received by the eaves top plate, collected from the eaves top plate by the rear gutter, and is passed through the vertical gutter. Since the water is drained to the ground, water does not drip from the bottom of the deck, the girder or the front spar.
[0034]
According to the invention of claim 2, the water that has entered the rain gutter of the balcony component is collected by the collecting gutter through the call gutter, and the water that did not enter the rain gutter of the balcony component is rear gutter by the eaves top plate. After being collected, the water is merged with the water collecting mass, so that the water is smoothly drained with a minimum number of drainage members and drainage channels. Further, since the upper elbow, the gutter and the lower elbow are concealed by the eaves top plate, they do not impair the appearance of the balcony.
[0035]
According to the third aspect of the present invention, since the rain gutter of the girder is inclined downward in the outdoor direction, the rainwater flowing into the gutter of the girder from the side end of the upper surface of the deck smoothly flows into the call gutter. And drainage is improved.
[0036]
According to the invention of claim 4, the rainwater flowing out from the side end of the deck upper surface and the rainwater flowing out from the front girder end of the deck upper surface are received by the front gutter inclined in the outdoor direction, and the rainwater is Since it is smoothly guided from the gutter to the water collecting mass of the rear gutter via the call gutter and merges, rainfall on the balcony and dew condensation generated on the balcony can be drained through a minimum common drainage path. .
[0037]
According to the invention of claim 5, attachment to the rain gutter provided below the joist of the water collecting mass and connection with the lower elbow of the call gutter and the vertical gutter can be easily performed.
[Brief description of the drawings]
FIG. 1 is a longitudinal sectional view of a balcony provided with a drainage device according to the present invention.
FIG. 2 is a sectional view taken along line XX of FIG.
FIG. 3 is a perspective view of a water collecting mass.
FIG. 4 is a plan view of a water collecting mass.
FIG. 5 is a sectional view taken along the line YY of FIG. 4;
[Explanation of symbols]
B frame 4 joist hanging 5 side gutter 6 girder 9a upper elbow 9b lower elbow 10 call gutter 11 joist 12 deck material 14 front gutter 15 rear gutter 17 eaves top plate 20 water collecting mass 21 concave portion 22 mounting portion 23 connecting cylinder portion 24 positioning Piece 25 standing gutter

Claims (5)

Below the joists, a rain gutter is provided that continuously opens from the lower side of the left girder to the lower side of the right girder. An eaves top plate that extends down and slopes down to the opening of the gutter is provided continuously from the lower surface of the left girder to the lower surface of the right girder,
Rainwater or dewdrops hanging from the deck or joist, the joists, the girder and the front girder are all received by the eaves top plate and joined to the rain gutter,
A drainage device for a balcony, comprising draining rainwater or dew condensation water that has joined the rain gutter to the ground through a vertical gutter. The rainwater flowing out from the front end of the deck upper surface flows into the rain gutter provided on the inner surface of the deck of the girder, and the rainwater flowing out of the front girder end of the upper surface of the deck receives the rainwater flowing out of the front girder inside the deck or the front end. Into the rain gutter provided in the deck material, and join the gutter from the longitudinal end of the gutter to the rain gutter of the girder, and gather at the junction between the rain gutter provided below the joist and the vertical gutter. A water trough is attached, and the rainwater that has joined the rain gutter of the girder is guided to the water collecting trough by a call gutter, and water from the call gutter and water from the rain gutter provided below the joist are collected. The drainage device for a balcony according to claim 1, wherein the drainage device joins the troughs and flows down to the vertical gutter. A rain gutter molded separately from the girder is attached to the inner surface of the girder with a slant so that the joist side is higher and the front girder side is lower. The rainwater flowing into the rain gutter and flowing through the rain gutter connected to the front girder end of the rain gutter near the front girder side end thereof is combined with the water collecting mass. Balcony drainage device described. A rain gutter molded separately from the girder is attached to the inner surface of the girder with a slant so that the joist side is higher and the front girder side is lower. The rainwater flowing into the rain gutter and flowing out from the front girder end of the upper surface of the deck is flown into the rain gutter provided on the deck inner surface of the front girder or the rain gutter formed on the deck material at the front end. The gutter is joined to the gutter from the longitudinal end of the gutter, and the gutter is joined to the water collecting mass via a call gutter connected near the front girder end of the gutter. The drainage device for a balcony according to claim 2, wherein: A concave portion that is open on the upper surface, a coupling cylindrical portion that projects downward from the bottom of the concave portion and penetrates in the vertical direction, and a gap around the hole of the coupling cylindrical portion on the bottom surface of the concave portion; 5. The water collecting mass for a drainage device for a balcony according to claim 2, further comprising a positioning piece which is raised and held and fitted to a lower elbow of the call gutter.

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