JP2004225305A - Drainage device of balcony - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a drainage device of a deck capable of draining water to the ground without dropping dew drops occurred at least in a gable beam and a front beam downward the deck. <P>SOLUTION: A condensation dew collecting groove 3g collecting condensation dew occurring in a hollow internal wall surface is provided to a deck side part of a hollow section 3a of the gable beam 3, at the same time, an auxiliary rain gutter 3e projected to the deck side is provided to the lower end section of the gable beam to connect the condensation collecting groove 3g to the auxiliary rain gutter 3e, the lower end section of a hollow section 7a of the front beam is connected to the auxiliary rain gutter 3e at the longitudinal end section of the front beam, and the condensation dew flowing into the auxiliary rain gutter from the insides of the gable bear and the front beam is drained to the ground through a rainwater guiding member. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a drainage device for a balcony in which members requiring strength, such as a girder beam and a front spar, are hollow members made of an aluminum alloy.
[0002]
[Prior art]
Members that require strength, such as a girder, a front girder, and a joist of a balcony, often use a hollow material made of an aluminum alloy that is excellent in strength, formability, lightness, appearance, and the like. On the other hand, since the hollow material made of aluminum alloy has high thermal conductivity, the outside air temperature decreases in the morning and evening, and condensed water may be generated in the hollow portion particularly in spring, summer and autumn.
[0003]
There are two types of balconies protruding from the building frame: pillared types that support the corners of the balconies with pillars erected on the ground, and pillarless types that do not have such pillars. In any case, a drainage device is provided for guiding rainwater falling on the deck to the ground without being dripped from the lower surface of the deck and draining the water.
[0004]
The drainage device of the balcony includes a rain gutter (rear gutter) provided on a joist with rainwater flowing from a vehicle-side end (rear end) of the deck upper surface or a rain gutter (rear gutter) provided on a rear end of the deck upper surface. ), Then flow down to the rain gutter (side gutter) provided on the girder, receive the rainwater flowing out from the girder side end (side end) of the deck upper surface with the side gutter, and the front girder side of the deck upper surface Rainwater flowing out from the end (front end) is received by a rain gutter (front gutter) provided at the front end of the deck upper surface, merges with the side gutter from the front gutter, and forms a standing gutter or a call gutter connected to the side gutter. One that drains to the ground via a rainwater guiding member such as a vertical gutter or a water conduction chain (see Patent Document 1). A collecting gutter is provided at a position one step lower than the side gutter of the vehicle body, and the rainwater collected on both side gutters is further reduced. There is known a device that collects water in a collecting gutter and drains it to the ground via a rainwater guide member (see Patent Document 2). Also, all rainwater flowing down from a deck side end to a side gutter is collected in a front gutter provided on a front girder, and the front gutter is drained to the ground via a rainwater guide member (Patent Document 3). Is also known.
[0005]
[Patent Document 1]
JP-A-58-40618 [Patent Document 2]
JP-A-8-209870 [Patent Document 3]
JP-A-12-27383
In particular, pillarless balconies may be installed so that the deck upper surface, and thus the girder, is slightly inclined so that the front girder side is slightly higher than the joist hanging side (hereinafter, this is referred to as a raised front). is there. The reason is that the front girder side slightly decreases due to aging or deterioration, and is designed to be horizontal when the anticipated decrease occurs. If it is installed horizontally from the beginning, the rain gutter of the girder will be inclined so that the front girder side will be lower than the joist side due to aging or deterioration (this is hereinafter referred to as falling forward).
[0007]
[Problems to be solved by the invention]
However, the conventional deck is not provided with any drainage means for dew water generated in the hollow portion of each component. At best, a resin cap is fitted into the hollow at the outdoor end of the girder. And since a cap does not have watertightness, in a conventional balcony, dew condensation water may drop below the balcony from a longitudinal end of a metal member having a hollow portion such as a girder, a front girder and a joist. There have been various problems when hanging laundry under the balcony or working or reading under the balcony.
[0008]
Conventionally, the gutter of the girder, the gutter of the front girder, and the gutter of the girder are all integrally formed with the girder, the front girder, and the girder. Therefore, in the balcony that is initially set up first, (a) most of the rain that has fallen on the deck upper surface collects in the gutters of the joists. Overflows and drops down the deck. (B) In the case where a vertical gutter is connected near the outdoor end of the girder, rainwater accumulates in the gutter of the girder even after the rainfall ends, and the drainage is not completely drained early. For this reason, if the water tightness of the end of the gutter of the gable beam is not good, water leaks easily from the end of the girder beam side. Then, when the deck becomes horizontal due to aging or the like, the drainage of the upper surface of the deck and the rain gutter of the girder decreases.
Also, if the deck where the vertical gutter is connected to the end of the girder on the skeleton side is installed horizontally, after the rain gutter of the girder falls down due to aging or deterioration, Rain water accumulates on the front girder side portion of the gutter, and similarly, drainage is reduced, and there is a problem that water leaks or drops from the front girder end of the girder.
[0009]
The present invention has been made in view of the above circumstances, and a first problem is that at least the dew condensation generated in the girder and the front spar is not dripped below the deck, and the groundwater is guided through the rainwater guiding member. To provide a deck drainage device capable of draining water.
A second object of the present invention is to make it possible to drain at least the dew water generated in the beam and the front spar by the minimum processing of the beam and the front spar.
A third object is to condense dew water generated in at least the girder and the front girder with rainwater that has fallen on the upper surface of the deck so that the water can be drained through a minimum gutter member.
[0010]
[Means for Solving the Problems]
In order to solve the above-mentioned problems, a drainage device for a deck according to the present invention is provided with a dew condensation groove for collecting dew condensation generated on the inner wall surface of the hollow part of the hollow part of the girder part. An auxiliary rain gutter protruding toward the deck is provided at the lower end of the front gutter so that the dew condensation groove communicates with the auxiliary rain gutter, and the lower end of the hollow portion of the front girder is formed at the longitudinal end of the front girder with the auxiliary gutter. And the condensed water flowing into the auxiliary rain gutter from inside the girder and the front girder is drained to the ground via a rain water guiding member.
With the above configuration, dew condensation water generated on the inner wall surface of the hollow portion of the girder gathers in the dew condensation groove and flows out to the auxiliary rain gutter. The dew water generated on the inner wall surface of the hollow portion of the front girder flows through the lower end of the hollow portion to the longitudinal end of the front girder, and flows out from the end to the auxiliary gutter. Condensed water that has flowed out to the auxiliary rain gutter is drained to the ground via a rainwater guide member. Therefore, the condensation water is prevented from dripping from the end of the girder or the front girder.
[0011]
Further, in the drainage device for a deck according to the present invention of claim 2, the lower end portion of the deck side vertical wall forming the dew condensation groove of the girder beam is bent to the opposite side to the deck, and the dew condensation groove is formed on the bent wall. A hole is provided to communicate with the auxiliary rain gutter, and between the longitudinal end surface and the bent wall at the lower end of the hollow portion of the front spar which is connected by abutting the longitudinal end surface to the deck-side vertical wall of the girder. A gap is formed, and in the gap, the hole of the bent wall and the lower end of the hollow portion of the front spar communicate with the auxiliary gutter.
With the above configuration, the dew condensation groove of the girder communicates with the gap formed by the bent wall of the girder with a hole, and the lower end of the hollow portion of the front girder connected by contacting the longitudinal end face with the deck side surface of the girder. The part faces the gap formed by the bent wall of the girder. The gap is connected to the auxiliary gutter. Therefore, the dew water generated on the inner wall surface of the hollow portion of the girder beam and the inner wall surface of the hollow portion of the front girder are both collected in the auxiliary rain gutter. The minimum processing that only requires a hole in the bent wall of the girder beam is sufficient.
[0012]
The bottom wall forming the hollow portion of the front spar is cut and raised downward near the longitudinal end thereof to form a locking piece, and a hole or notch is formed to open the hollow portion of the front spar downward, The locking piece is used for positioning and temporary holding by locking the front girder to the auxiliary gutter of the girder when connecting the girder to the girder, and the hole or notch is used for removing dew water generated in the hollow part of the girder. When used to flow into the auxiliary gutter of the girder, the connection work between the front girder and the girder can be performed quickly and stably, and the dew condensation generated in the hollow part of the girder Drainage to the auxiliary rain gutter is improved.
[0013]
With the front end of the deck facing the rain gutter provided on the inner surface of the deck of the gable beam, the front girder end of the deck facing the rain gutter provided on the inner surface of the deck of the front girder, The rainwater flowing out from the front end of the front surface of the deck flows into the gutter of the girder (hereinafter referred to as the gutter gutter), and the rainwater flowing from the front girder end of the upper surface of the deck is drained by the front girder. Flowing into a rain gutter (hereinafter referred to as a front gutter), joining the gutter gutter from a notch or a hole formed at a longitudinal end portion of the front gutter, and rainwater joined to the gutter gutter; When the condensed water flowing into the auxiliary rain gutter of the girder is merged with the merger and drained from the merger to the ground via the rainwater guide member, the rain that has fallen on the deck upper surface and at least the wife Condensation water generated in the beam and front girder can be drained through a common rain gutter. Lowering appearance can be prevented by increasing wood.
[0014]
BEST MODE FOR CARRYING OUT THE INVENTION
Next, embodiments of the present invention will be described with reference to the drawings.
1 to 10 are views for explaining the components of the balcony along the order of the installation steps. FIG. 1 is a perspective view showing the state of attachment of the metal fittings to the frame, and FIG. 2 is a diagram showing the use of the metal fittings. FIG. 3 is a perspective view for explaining a step of attaching a joist, FIG. 3 is a perspective view for explaining a step of attaching a joist between base ends of the attached joist, and FIG. 4 is a view showing a positioning structure of the joist with respect to the joist. FIG. 5 is a perspective view illustrating the positional relationship between the end of the girder and the joist, FIG. 6 is a perspective view illustrating the process of attaching the front girder between the ends of the girder, and FIG. FIG. 8 is a perspective view showing the shape and structure of the front girder, FIG. 8 is a cross-sectional view of the front girder, FIG. 9 is a cross-sectional view showing the moving direction and positional relationship when the front girder is attached to the girder, and FIG. And FIG.
11 is a sectional view of a main part of a balcony provided with a drainage device according to the present invention, FIG. 12 is a sectional view taken along line XX of FIG. 11, FIG. 13 is a sectional view taken along line YY of FIG. 11, and FIG. FIG. 15 is a perspective view for explaining the attachment of the merger to the gutter gutter.
[0015]
[Configuration of balcony]
First, each component will be described in accordance with the order in which balconies are installed.
As shown in FIG. 1, two left and right front fittings 2 protruding outside in a frame 1 are fixed to a fixing plate 2a with screws at intervals corresponding to the width of a balcony. In this case, the metal fitting 2 is fixed upward, horizontal, or downward depending on whether the balcony is installed in a rising state, in a horizontal state, or in a falling state. .
[0016]
Next, as shown in FIG. 2 only for the right-hand metal fitting 2, each of the metal fittings 2 is inserted into the girder 3 and the screw s1 is screwed in, so that the girder 3 is fixed to the frame. More specifically, the girder 3 has a hollow portion 3a whose main body is formed in a rectangular tube shape, and the end of the girder 3 on the skeleton side of the girder 3 is attached to the fixing plate 2a of the girder 2. Until it abuts, it is nested into the hollow part 3a of the girder 3 and the screw s1 is inserted through the screw insertion hole 3c provided in the inner wall 3b forming the hollow part 3a of the girder 3 and screwed into the metal fitting 2. Fix by doing. After fixing, a hole closing seal 4 is attached to prevent rainwater from entering the screw insertion hole 3c. At the lower end of the inner wall 3b of the girder 3, an auxiliary rain gutter 3e to be dictated is integrally provided.
[0017]
Subsequently, as shown in FIG. 3, a joist rest 5 is fitted between end portions of the left and right girder beams 3 fixed to the skeleton 1 (sometimes referred to as base ends), and the coach screw is inserted. And fixed to the frame 1 by screws s2. In this case, as shown in FIGS. 2, 3, and 4, a rectangular locking piece 3d is formed by horizontally cutting and raising the end of the inner wall 3b of the end beam 3 on the skeleton side. As shown in FIG. 5, the joist rack 5 extends vertically from the upper end of the vertical wall 5a, which is in close contact with the skeleton, and substantially horizontally in the outdoor direction, and covers the skeleton side edge of the deck upper surface described later. It has a cover portion 5b and a joist receiver 5c extending stepwise in the outdoor direction from the lower end of the vertical wall 5a, and has a substantially U-shaped cross section as a whole. The joists 5 can be easily held in a horizontal state by being placed on the locking pieces 3d, and the screw s2 can be easily screwed into an accurate position while being held horizontally.
[0018]
After the girder 3 and the joist hanger 5 are fixed to the skeleton 1, as shown in FIG. 5, a seal such as filling a caulking material 6 between the upper end of the girder 3 and the joist hanger 5 and the wall of the skeleton. Processing is performed.
[0019]
After the joists 5 are attached, as shown in FIG. 6, the front girder 7 is inserted between the left and right end portions of the girder 3 on the outdoor side (this may be referred to as the tip), and the end face in the longitudinal direction is attached to the girder. 3 are connected in a state of contact with the opposing surface on the distal end side, that is, the inner wall 3b. More specifically, as shown in FIG. 7, the front spar 7 has a hollow portion 7 a whose main body is formed in a rectangular tube shape, and is open to the upper surface above an inner wall 7 b forming the hollow portion. Further, a front rain gutter 7c that opens in the longitudinal direction is integrally formed, and a joist receiver 7d is formed below the inner wall 7b.
[0020]
Then, as shown in FIG. 6, the inner wall 7b faces the skeleton side, and as shown in FIG. 7, one side 8a of the L-shaped front girder mounting bracket 8 is inserted into the end of the hollow portion 7a. The side 8b is fixed to the inner wall 7b with the screw s3 in a state where the side 8b is positioned on the opening surface of the hollow portion 7a (see FIG. 6), and the front spar 7 is located between the end portions of the end beam 3 as shown in FIG. It fits down from above and is mounted on an auxiliary rain gutter 3e projecting below the inner wall 3b of the girder 3.
At this time, as shown in FIG. 8, the longitudinal end of the lower wall 7e forming the hollow portion 7a of the front spar 7 is cut and raised downward to form the locking piece 7f. As shown, when the front girder 7 is lowered, the locking pieces 7f are fitted and locked into the auxiliary rain gutters 3e of the girder 3 so that the front girder 7 is connected to the right and left before the girder 3 is connected. It can be stably held at the correct position between the end beams 3 on both sides.
[0021]
As shown in FIG. 6, the longitudinal end surface of the front spar 7 and the other side 8 b of the bracket 8 located on the end surface are brought into contact with the opposing surface of the tip of the end beam 3, that is, the inner wall 3 b, and the other side 8 b and the inner wall 3b, the screw s4 penetrates through the hole in the inner wall from the hollow portion 3a of the girder 3 and is screwed into the screw hole on the other side 8b of the bracket 8, so that the front spar 7 is Linked to
[0022]
Before the connection, a sealing material 11 is attached to both longitudinal end surfaces of the front spar 7, and in the connected state, a high watertightness is obtained at the contact surface between the girder 3 and the front spar 7. Also, after the sealing material 11 is attached to the end face of each girder 3, the girder cap 9 is fitted to the hollow part 3 a of the girder 3, and the tip of the hollow part 3 a of the girder is sealed. , High watertightness is obtained.
[0023]
As described above, after the left and right girder beams 3, the joists 5 and the front spar 7 are connected to the outdoor side surface of the skeleton 1 in a rectangular frame shape, the opposing surfaces of the both girder beams 3, ie, the inner wall 3b surface, As shown in FIGS. 10 and 11, a gutter gutter 12 formed separately from the girder 3 is attached so that the front girder side is lower than the skeleton side, that is, it is attached in a downwardly inclined state.
[0024]
As shown in FIGS. 10, 12, 13, and 14, the gutter gutter 12 includes an outer vertical wall 12a, a bottom wall 12b extending horizontally inward from the lower end of the outer vertical wall with a required width, and a bottom wall 12b. It has an inner vertical wall 12c extending in the vertical direction at the inner end, and the outer vertical wall 12a stands up to a position higher than the inner vertical wall 12c. The outer vertical wall 12a, the bottom wall 12b, and the inner vertical wall 12c have a groove 12d that is opened upward by a portion above the bottom wall and that opens in the longitudinal direction of the gutter gutter. Further, supporting edges 10e; 10f, 12g extending horizontally inward are provided at the upper end of the outer vertical wall 12a and the upper and lower ends of the inner vertical wall 12c. In addition, screw holes 12h and 12i are provided in the outer vertical wall 12a and the inner vertical wall 12c forming the groove 12d.
[0025]
As one method for facilitating the mounting of the gutter gutter 12 in a downwardly inclined state, the height from the upper surface of the auxiliary gutter 3e of the girder 3 to the upper surface of the joist receiver 5d of the joist holder 5 is 3 is designed to be larger than the height from the upper surface of the auxiliary rain gutter 3e to the upper surface of the joist receiver 7d of the front girder 7.
The gutter gutter 12 is bridged between the joist hanger 5d and the front girder 7 after being connected in a rectangular frame shape, and the outer vertical wall 12a of the gutter gutter abuts on the inner wall 3b of the girder beam 3, and The lower supporting edge 10g of the inner vertical wall 12c at both ends of the gutter gutter 12 in the longitudinal direction is placed on the joist receiver 5d of the joist hanger 5 and the joist receiver 7d of the front spar 7, and these joist receivers 5d , 7d are fixed to both ends of the gutter gutter by screws s5 screwed into them from below. Therefore, the gutter gutter 12 is mounted in a downwardly inclined state.
[0026]
In this case, as shown in FIG. 10, at both ends in the longitudinal direction of the gutter gutter 12, two gauze gutter openings 13 a and 13 b having the same shape and dimensions are screwed into the screw holes 12 h and 12 i by screws s 6. Installed. The gutter gutter opening 13a, 13b is formed of a rectangular plate 13, and the height thereof is slightly larger than the depth of the groove 12d, that is, the distance from the bottom wall 12b to the support edge 10f.
As shown in FIGS. 10 and 12, the gutter gutter opening 13a attached to the end of the gutter gutter 12 on the skeleton side is attached so that the lower side thereof is aligned with the bottom wall 12b. The longitudinal end of the groove 12d is sealed, and the upper end of the gutter gutter opening 13a protrudes above the support edge 10f. As shown in FIGS. 10 and 13, the gutter gutter opening 13b attached to the front girder end of the gutter gutter 12 is mounted so that its upper side coincides with the support edge 10f, and The longitudinal end of the groove 12d is sealed.
[0027]
When the gutter gutter 12 comes into contact with the inner surface of the girder beam 3 and is hung between the joist 5 and the front girder 7 and is fixed by the screw s5 at the support edge 12g, the support edge 12f is attached to the deck material. It is used to mount and support the 14 deck front end portions.
[0028]
Next, at the intermediate position in the longitudinal direction between the joist hanger 5 and the front girder 7, a plurality of known joists 13 long in a direction perpendicular to the joist hanger 5 and the front girder 7 are arranged in parallel with the girder beam 3 at a required interval. It is passed over and fixed. The joist 13 has a height equal to the height of the inner vertical wall 12 c of the gutter gutter 12, and its two longitudinal ends are respectively placed on the joist receiver 5 d of the joist holder 5 and the joist receiver 7 d of the front spar 7, and the screw s 5 It is fixed by similar screws. Therefore, the upper surface of the supporting edge 12f of the gutter gutter 12 and the upper surface of each joist 13 are all present on one common downward slope.
[0029]
Then, the known deck members 14 are sequentially mounted on the common inclined surface in the direction from the skeleton side to the front spar side as follows. That is, the first deck material is placed on the supporting edge 12f of the joist 13 and the gutter gutter 12, and is slid in the direction of the skeleton 1. At this time, as shown in FIG. 11, the end of the gutter gutter 12 on the skeleton side is provided with a gutter gutter opening 13a protruding above the support edge 12f. It is stopped by the rain gutter small mouth blocking 13a. In other words, the gutter gutter opening 13a functions as a starter for installing the deck material, and the deck material is accurately positioned only by sliding the first deck material in the direction of the frame, and the other deck materials that follow are sequentially connected to the joists 13a. By simply placing the deck material on the supporting edge 12f of the gutter 12 and sliding in the direction of the frame 1, all the deck materials are easily and quickly positioned at predetermined positions as designed, and inserted between the deck materials. The screw s6 to be formed is screwed into a screw hole formed in the joist 13 in advance, so that the deck member 14 can be fixed smoothly.
[0030]
Then, the end of the first deck material on the skeleton side is covered with the cover 5b of the joist 5 (see FIG. 11). Further, the deck front end of each deck material 14 is placed on the support edge 12f as described above, and faces the groove 12d of the gutter gutter 12, and the deck front end of the deck material and The groove 12d is covered by fixing the deck cover 15 to the supporting edge 12e formed at the upper end of the outer vertical wall 12a of the gutter 12 with the decorative screw s7 (see FIGS. 12 and 13). Further, the outdoor side end of the last deck material faces the front rain gutter 7c of the front girder 7.
[0031]
[Configuration of drainage device]
The balcony is provided with a drainage device described below. That is, both ends of the upper surface of the deck in the direction of the frontage of the deck face the groove 12d of the gutter gutter 12, and the end of the groove 12d of the gutter gutter 12d on the skeleton side and the outdoor side are sealed by the gutter gutter small mouth closing 13a and 13b. Have been. A hole 12j for rainwater fall is provided in the bottom of the groove 12d near the outdoor end of the gutter gutter 12, and the upper end of the rainwater fall tube 16 is connected to the hole. Therefore, the rainwater flowing out from both ends in the frontage direction of the deck flows through the downwardly flowing gutter gutter 12 toward the outdoor side end, and flows down from the rainwater drop hole 12j to the rainwater fall tube 16.
[0032]
On the other hand, the outdoor side end of the deck upper surface faces the front rain gutter 7c of the front girder 7 (see FIG. 11), and as shown in FIGS. 7 and 9, at least one end of the front rain gutter 7c in the longitudinal direction. Is cut off over a length not exceeding the width of the groove 12d of the gutter gutter, thereby forming a rainwater falling hole 7e. Since the bottom of the front gutter 7c is located slightly higher than the supporting edge 12f of the gutter gutter (see FIGS. 11 and 13), the rainwater flowing into the front gutter 7c from the upper surface of the deck flows through the hole 7e. The water flows down into the groove 12d of the rain gutter 12, merges with the rain water flowing in from the front end of the deck, and flows down into the rain water fall tube 16 from the rain water fall hole 12j. The rainwater that has flowed down to the rainwater fall tube 16 falls into the merger 16a as illustrated in FIG.
[0033]
The bottom wall 3f of the hollow portion 3a of the girder 3 is inclined downward toward the deck side, and a condensation collecting groove 3g is formed in the deck side portion, and dew condensation generated on the inner wall surface of the hollow portion 3a is condensed. It gathers in the groove 3g. The auxiliary rain gutter 3e protrudes from the deck side end of the bottom wall 3f to the deck side, and a bent wall 3h recessed in the opposite direction to the deck is formed at the lower end of the inner vertical wall 3a of the end beam 3. A gap 3i is formed outside the bent wall, and holes 3j are formed at a plurality of places spaced apart in the longitudinal direction of the bent wall 3h so as to communicate the dew condensation groove 3g with the auxiliary rain gutter 3e. Therefore, the dew condensation water collected in the dew condensation groove 3g flows out to the auxiliary rain gutter 3e through the hole 3j.
[0034]
The front girder 7 is connected with its longitudinal end face abutting on the inner vertical wall 3b of the girder, and the lower end of the longitudinal end face of the front girder 7 faces the gap 3i. Therefore, the lower end of the hollow portion 7a of the front spar communicates with the auxiliary rain gutter 3e through the gap 3i. Further, as described above, since the locking piece 7f is engaged in the auxiliary rain gutter 3e, the hole 7g adjacent to the locking piece also communicates with the auxiliary rain gutter 3e. Therefore, the dew water generated on the inner wall surface of the hollow portion of the front spar 7 also flows out to the auxiliary rain gutter 3e via the hole 7g and the gap 3i.
In addition, both ends of the auxiliary rain gutter 3e in the longitudinal direction are sealed by watertight small-mouth members 9 '.
[0035]
The merger 16a is formed in a front L-shaped cylindrical shape, and is opened on the upper surface of the vertical portion of the L shape, and on the upper surface and the lower surface of the horizontal portion. Then, the upper opening of the horizontal part is connected to the hole formed in the bottom of the auxiliary rain gutter 3e via the packing 16b by a screw s8, and the lower part of the rain water fall tube 16 is connected to the upper opening of the vertical part. Is inserted. Thus, the rainwater flowing down from the gutter gutter 12 through the rainwater fall tube 16 and the condensed water generated in the girder 3 and the front girder 7 and flowing out to the auxiliary gutter 3e are combined into the merger 15b.
The lower end of the merger 16a is connected to the upright gutter 19 through the elbow 17a, the call gutter 18, and another elbow 17b, so that it flows down near the frame as in the conventional case and is drained to the ground. .
[0036]
FIG. 11 exemplifies a case of a pillarless type balcony. To drain the rainwater fall tube 16 from the rainwater fall tube 16 provided near the front girder 7 to the ground, the rainwater fall tube 16 is fitted with an elbow 17a, a call gutter 18 and It is desirable to connect to the upright gutter 19 provided near the skeleton through the elbow 17b from the viewpoint of both appearance and prevention of obstacles. However, even in the case of a pillarless balcony or a pillared balcony, In particular, the lower end of the rainfall fall tube 16 may be connected to a vertical gutter or water supply chain provided vertically below or near the pillar.
[0037]
FIG. 11 illustrates a case in which the upper surface of the deck is descended. However, it is needless to say that a good drainage property can be obtained even in a deck which is elevated because the gutter gutter is attached to the depression. Nor.
[0038]
As described above, the gutter gutter 12 is formed separately from the girder beam 3, so that the balcony can be raised, leveled, or lowered, so that the gutter gutter can be moved down to the girder beam in any case. It is possible to install it, so even if the installation angle of the balcony changes due to aging etc., the rain always falling on the deck top surface will flow toward the outdoor end of the gutter gutter, and the outdoor end Water can be drained from the vicinity to the ground, and even when the amount of rainfall is large, it is possible to reliably prevent overflow from the end of the girder beam on the skeleton side. However, the present invention is also applicable to a structure in which the gutter of the gable beam is formed integrally with the girder beam.
Also, if the depth of the auxiliary rain gutter is set appropriately, the rainfall fall tube 16, the hole 3i and the merging device 16a may be provided at any position in the longitudinal direction of the girder beam, and may cause water leakage from the auxiliary rain gutter. There is no.
[0039]
【The invention's effect】
As described above, according to the first aspect of the present invention, a dew condensation groove for collecting dew condensation generated on the inner wall surface of the hollow portion is provided at the deck side portion of the hollow portion of the girder, and the lower end portion of the girder projects toward the deck. An auxiliary rain gutter is provided to communicate the dew condensation groove with the auxiliary rain gutter, while the lower end of the hollow portion of the front girder is communicated with the auxiliary rain gutter at the longitudinal end of the front girder, and the inside of the girder beam and the front girder Since the condensed water flowing into the auxiliary rain gutter from inside is drained to the ground via the rainwater guiding member, at least the condensed water generated in the girder and the front girder is dripped from the end of the girder or the front girder. It can be drained to the ground without letting it go.
[0040]
According to the invention of claim 2, a hole is formed in a lower end portion of the vertical wall on the deck side of the girder beam, the hole being formed on the bent wall formed on the opposite side to the deck so that the dew condensation groove communicates with the auxiliary rain gutter. A gap is formed between the longitudinal end face and the bent wall at the lower end of the hollow part of the front girder connected to the vertical wall by contacting the longitudinal end face with the hole of the bent wall and the hollow of the front girder at the gap. Since the lower end of the section is connected to the auxiliary gutter, the condensed water generated on the inner wall surface of the hollow part of the girder and the inner wall surface of the hollow part of the front girder are collected together in the auxiliary gutter. Since it is only necessary to provide a hole in the bent wall, the number of processes can be reduced.
[0041]
Further, according to the third aspect of the present invention, the locking piece is formed on the bottom wall forming the hollow portion of the front spar, and the hole or notch for opening the hollow portion of the front spar downward is formed. When the front girder is connected to the girder, it is used for positioning and temporary holding by locking to the auxiliary gutter of the girder, and the hole or notch is used to condense water generated in the hollow part of the girder. Since it is used to flow into the auxiliary gutter, the connection work between the front girder and the girder can be performed stably and quickly, and the auxiliary gutter for dew condensation generated in the hollow portion of the front girder. Drainage to the drain is improved.
[0042]
The front end of the deck faces the rain gutter of the girder, and the front girder side end of the deck faces the rain gutter of the front girder. The rainwater flowing from the front girder end of the upper surface of the deck flows into the rain gutter of the front girder, and the cutout or hole formed at the longitudinal end of the rain gutter of the front girder flows into the rain gutter. The rain gutter of the girder is merged with the rain gutter of the girder, and the condensed water flowing into the auxiliary gutter of the girder is merged with the merger. Through the common rain gutter, it is possible to drain the rain that has fallen on the deck and at least the condensate generated in the girder and the front girder through a common rain gutter. Even if it has a drainage function, it does not impair the beauty of the balcony.
[Brief description of the drawings]
FIG. 1 is a perspective view showing a state where a leading metal fitting is attached to a skeleton.
FIG. 2 is a perspective view illustrating a step of attaching a girder beam using a leading metal fitting.
FIG. 3 is a perspective view illustrating a step of attaching a joist between base ends of the attached girder beams.
FIG. 4 is a sectional view of a main part showing a positioning structure of a joist with respect to the girder beam.
FIG. 5 is a perspective view illustrating the positional relationship between the end of the girder and the joist.
FIG. 6 is a perspective view illustrating a process of attaching a front spar between leading ends of a girder.
FIG. 7 is a perspective view showing the structure of a front spar.
FIG. 8 is a sectional view of a front spar.
FIG. 9 is a cross-sectional view showing a mounting positional relationship of the front spar with respect to the girder.
FIG. 10 is a perspective view showing the shape and structure of the gutter gutter, partially broken away.
FIG. 11 is a sectional view of a main part of a balcony provided with a drainage device according to the present invention.
FIG. 12 is a sectional view taken along line XX of FIG. 11;
FIG. 13 is a sectional view taken along line YY of FIG. 11;
FIG. 14 is an enlarged sectional view taken along the line ZZ in FIG. 11;
FIG. 15 is a perspective view for explaining attachment of a drop cylinder and a merger to a gutter gutter.

Claims (4)

On the deck side portion of the hollow portion of the gable beam, a dew condensation collecting groove for collecting dew condensation generated on the inner wall surface of the hollow portion is provided, and an auxiliary rain gutter protruding toward the deck is provided at a lower end portion of the gable beam, The dew condensation groove is communicated with the auxiliary rain gutter, the lower end of the hollow portion of the front girder is communicated with the auxiliary rain gutter at the longitudinal end of the front girder, and from inside the girder beam and the front girder to the auxiliary rain gutter. A drainage device for a balcony, wherein the condensed water that has flowed in is drained to the ground via a rainwater guide member. The lower end of the deck-side vertical wall forming the dew-collection groove of the gable beam is bent to the opposite side to the deck, and a hole is provided in the bent wall to allow the dew-collection groove to communicate with the auxiliary rain gutter. A gap is formed between the longitudinal end face and the bent wall at the lower end of the hollow portion of the front spar that is connected to the side vertical wall by contacting the longitudinal end face with the hole of the bent wall and the front of the bent wall at the gap. The drainage device for a balcony according to claim 1, wherein a lower end portion of a hollow portion of the girder communicates with the auxiliary rain gutter. The bottom wall forming the hollow portion of the front spar is cut and raised downward near the longitudinal end thereof to form a locking piece, and a hole or notch is formed to open the hollow portion of the front spar downward, The locking piece is used for positioning and temporary holding by locking the front girder to the auxiliary gutter of the girder when connecting the girder to the girder, and the hole or notch is used for removing dew water generated in the hollow part of the girder. The drainage device for a balcony according to claim 1 or 2, wherein the drainage device is used to flow into an auxiliary rain gutter of the girder. With the front end of the deck facing the rain gutter provided on the inner surface of the deck of the gable beam, the front girder side end of the deck facing the rain gutter provided on the inner surface of the deck of the front girder, The rainwater flowing out of the front end of the deck upper surface flows into the gutter of the girder, and the rainwater flowing out of the front girder end of the upper surface of the deck flows into the rain gutter of the front girder. The notch or hole formed at the longitudinal end of the gutter gutter merged into the gutter gutter, the rainwater merged with the girder gutter and the auxiliary gutter of the girder. The drainage device for a balcony according to any one of claims 1 to 3, wherein the condensed water and the condensate water are merged, and the condensate is drained from the merger to the ground via a rainwater guide member.

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