JPH0967888A - Drainage structure for curtain wall - Google Patents

Abstract

PROBLEM TO BE SOLVED: To drain rainwater which has penetrated in the hollow space of a mullion and improve the appearance of the lowest part, in a wall curtain separated from the ground at the lowermost part and protruded indoors from the lower external wall. SOLUTION: A water dripping frame 9 is fitted to the lowermost transom 5 and the body 41 of the seal receive member 40 is fitted to the water dripping frame 9 and the protruded part 42 is projected from the end face of the water dripping frame 9. A wet seal 45 is stuffed between water dripping frames adjacent to the right and left sides and the underface of the mullion to lead the rainwater in the hollow space of the mullion to the water dripping frame 9. And a drain hole 46 is opened in the water dripping frame 9. An eaves ceiling board is supported in the indoor side of the water dripping frame 9 and the lowermost part of the curtain wall is covered with the water dripping frame 9, the wet seal 45, and the eaves ceiling board.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure for draining rainwater that has infiltrated between spaces in a vertical curtain wall or rainwater that has infiltrated a connecting portion of left and right curtain wall units in a unit type curtain wall.

[0002]

2. Description of the Related Art As a unit type curtain wall drainage structure, for example, one disclosed in Japanese Patent Publication No. 1-29941 is known. This drainage structure forms a hollow between the vertical members of the curtain wall units that are adjacent to each other on the left and right, and rainwater at the connecting portion of the left and right curtain wall units flows down along the hollow to create a curtain wall unit at the bottom. A drainer plate and a waterproof sheet are attached between the lower member and the lower member to form a space portion communicating with the hollow portion, and the water is drained from the water drain hole of the space portion.

[0003]

When a curtain wall is installed from the roof of the building to the first floor, since the lowermost part of the curtain wall contacts the ground, the lower member can be attached to the ground for drainage as described above. , If the curtain wall is installed up to the floor above the first floor of the building, and the curtain wall protrudes outside from the outer wall of the floor where the curtain wall is not installed, the bottom of the curtain wall is separated from the ground, and Since the curtain wall projects outward from the lower outer wall, the lower member cannot be attached so as to face the lowermost portion of the curtain wall, so that drainage cannot be performed as described above.

Therefore, an object of the present invention is to provide a drainage structure for a curtain wall which can solve the above-mentioned problems.

[0005]

A drainage structure for a curtain wall according to the present invention is a curtain wall in which the lowermost part of the curtain wall is separated from the ground, and the curtain wall projects outward from the outer wall below. The draining frame is attached to the horizontal member at the bottom of the wall, the outdoor side edge of the eaves board is supported on the indoor side of this draining frame, and the sealing material receiving member is attached to the inner peripheral surface of the draining frame. The end portion of the material receiving member is projected from the end surface of the draining frame, and the wet sealing material is filled between the end surface of the draining frame adjacent to the left and right and the lower surface of the vertical member adjacent to the left and right, and the sealing material receiving member is used as a backup material. Then, the rainwater that has infiltrated between the adjacent left and right vertical members flows into the draining frame along the sealing member receiving member, and the draining frame is formed with drainage holes. A.

[0006]

[Operation] Rainwater that has infiltrated between adjacent vertical members on the left and right flows into the draining frame by the sealing material receiving member and is drained from the drainage holes of the draining frame, so the bottom of the curtain wall is far from the ground. In the curtain wall, rainwater that has infiltrated between the vertical members that are adjacent to the left and right can be drained. In addition, the bottom of the curtain wall is covered with a draining frame and eaves board, and the lower part of the adjacent vertical members on the left and right is covered with a wet sealing material, a draining frame, and an eaves board. It looks good.

[0007]

[Examples] As shown in FIG. 1, a plurality of uprights 2 are attached to a building frame 1 such as a floor slab with fasteners 3 at intervals in the left-right direction, and a plurality of intermediate spaces between the uprights 2 adjacent to each other on the left and right. A cubic curtain wall in which the unit blind 4, the lowermost blind 5, and an unillustrated uppermost blind are connected, and a panel 6 is mounted between the adjacent squares 2 on the left and right and the adjacent vertical stitches. 7 and the lowermost blind 5 is the lowermost lateral member of the curtain wall 7.

The curtain wall 7 is mounted on a floor above the first floor portion A, the curtain wall 7 projects outward from the outer wall 8 of the first floor portion A, and the lowermost portion of the curtain wall 7 is separated from the ground. Moreover, it projects more outward than the outer wall 8 below. A drainer frame 9 is attached to the lower part of the lowermost seamless member 5, and an eaves-top board 10 is attached across the drainer frame 9 and the outer wall 8.

As shown in FIG. 2, the upright 2 is a divided upright having two hollow uprights 20 fitted and connected to each other and having a hollow portion 21, and the uprights 20 are vertically adjacent members on the left and right. The vertical member 22 of the cuboid member 20 has a U-shaped outer side of the vertical plate 22 facing outward and has a concave groove 23 for mounting the panel inward, and a plurality of overlapping fittings are provided on the facing surfaces of the vertical plates 22. The pieces 24 are integrally provided so as to face each other, and the fitting portions of the overlapping fitting pieces 24 are sealed with a sealing material 25.

Since the cuboid 2 is a divided cuboid as described above, the rainwater a infiltrates into the hollow portion 21 from the fitting portion of the two cuboid members 20 as shown in FIG.

As shown in FIGS. 2 and 3, the lowermost seamless stitch 5 is abutted on the vertical plate 22 of the cuboid 20 toward the outside of the room and is connected by screws. The panel-mounting upward concave groove 26 of the lowermost seamless 5 is continuous with the concave groove 23 of the vertical member 20, and the drain block 27 is fitted and fixed to the lowermost portion of the concave groove 23 of the vertical member 20 as shown in FIG. The rainwater flowing along the concave groove 23 of the cuboid 20 flows into the upward concave groove 26 of the lowermost seamless 5 by the drainage block 27.
The rainwater that has flowed into the upward groove 26 is drained to the outside of the room through a drain hole 28 formed in the bottom of the upward groove 26 as shown in FIG.

As shown in FIG. 3, the water draining frame 9 is provided with an outdoor riser plate 31 and an indoor riser plate 32 integrally at the outdoor and inner ends of the lower horizontal plate 30, and the outdoor riser plate 31 thereof.
, The upper horizontal plate 33 is integrally provided toward the indoor side, the upper horizontal plate 33 is integrally provided with a mounting piece 34, and the eaves board support piece 35 is integrally provided on the indoor side end portion of the lower horizontal plate 30. It is provided for the purpose.

The lower surface 29 of the lowermost seamless member 5 has the same height as the lowermost surface 2a of the vertical 2, and a downward U-shaped mounting member 36 is mounted on the lower surface 29 with a screw 37. The attachment member 36 is attached to the attachment piece 34 of the draining frame 9 and the indoor side rising plate 3
2 is fixed by a screw 38, and a wet sealing material 39 is filled between the upper horizontal plate 33 and the lower surface 29 of the lowermost seamless member 5,
The eaves board 10 is supported by the eaves board support piece 35 of the draining board 9.

As shown in FIG. 2, the longitudinal end portion of the draining frame 9 projects outwardly from the vertical plate 22 of the upright 20 and the dimension between the end faces of the draining frames 9 adjacent to the left and right is the plane of the vertical 2. It is smaller than the inward dimension.

A seal receiving member 40 is provided near the longitudinal end of the water draining frame 9, and this seal receiving member 4 is provided.
0 projects outwardly from the end surface of the draining frame 9, and the dimension between the end surfaces of the seal receiving members 40 adjacent to the left and right is small.

As shown in FIGS. 3 and 4, the seal receiving member 40 includes the lower lateral plate 30 of the water draining frame 9 and the outdoor side rising piece 3.
1, an upper horizontal plate 33, a main body portion 41 contacting the indoor side rising plate 32 (inner peripheral surface of the draining frame 9), and a projection portion 42 integrally provided on both left and right side surfaces of the main body 41, the seal receiving A concave groove 43 that is continuous in the left-right direction is formed on the upper surface of the member 40 near the indoor side. As a result, the seal receiving member 40 is left-right misaligned and can be attached to the left and right draining frames 9, respectively.

In the seal receiving member 40, the main body 41 is inserted into the inner peripheral surface of the draining frame 9 so that one protruding portion 42 protrudes from the end surface of the draining frame 9, and the inner peripheral surface of the draining frame 9 and the protruding portion 42. A wet seal ring material 44 is filled between the seal receiving member 40 and the seal receiving member 40, and the seal receiving member 40 is attached to the inner peripheral surface of the draining frame 9, and the attaching portion is watertight.

As shown in FIGS. 5 and 6, a wet seal material 45 is filled between the opposing end surfaces of the draining frames 9 adjacent to each other on the left and right sides and the lower surface of the upright 2, and the adjacent seals are formed by the wet seal material 45. The space between the material receiving members 40 and the space between the lower surface of the upright 2 are sealed, and the lower part of the upright 2 is hidden by the eaves board 10 and the wet sealing material 45 so that they cannot be seen from below. As shown by the dotted line in FIG. 3, the wet sealing material 45 is filled over the lower surface of the projecting portion 42 and the outdoor portion, and the indoor portion of the wet sealing material 45 projects above the concave groove 43 to form the dam portion 45a. There is.

As described above, the hollow portion 2 of the cube 2 is
The rainwater that has entered the inside of 1 drops into the protruding portion 42 of the adjacent seal member receiving member 40, flows into the draining frame 9 through the groove 43, and the drain hole 46 formed in the lower horizontal plate 30 of the draining member 9
More drained. In addition, the adjacent seal material receiving member 40
The rainwater on the projecting portion 42 is blocked by the weir portion 45a of the wet sealing material 45 higher than the concave groove 43 and does not flow to the indoor side, so the rainwater does not flow to the eaves board 10.

Although the above embodiment is a vertical curtain wall, the same applies to a unit curtain wall. For example, as shown in FIG. 7, the drainer frame 9 is attached to the lower horizontal member (lower horizontal member) 51 of the lowermost curtain wall unit 50, and the right and left curtain wall units 5 are attached.
Dry seal material 5 that seals between 0 vertical members (vertical members) 52
The rainwater in the hollow portion 54 on the back surface of 3 is made to flow into the draining frame 9 by the seal receiving member 40, and is drained from the drain hole 46.

[0021]

The rainwater that has infiltrated between the left and right adjacent vertical members flows into the draining frame by the sealing material receiving member and the wet sealing material, and is drained from the drain holes of the draining frame. Therefore, in the curtain wall where the lowermost part of the curtain wall is far from the ground, rainwater that has infiltrated between the vertical members adjacent to the left and right can be drained without flowing to the eaves board,
Does not wet the eaves board. Also, the bottom of the curtain wall is covered with a draining frame and eaves board,
The lower parts of the vertical members adjacent to each other on the left and right are covered with the wet sealing material, the draining frame, and the eaves board, so that the appearance of the lowermost part of the curtain wall looks good.

[Brief description of drawings]

FIG. 1 is a bottom vertical sectional view of a curtain wall.

FIG. 2 is an enlarged cross-sectional view taken along line BB of FIG.

FIG. 3 is an enlarged vertical sectional view of the lowermost portion of the curtain wall.

FIG. 4 is a perspective view showing a state in which a sealing material receiving member is attached to the draining frame.

FIG. 5 is a perspective view of a seal portion at the bottom of the curtain wall.

FIG. 6 is a front view of a seal portion at the bottom of the curtain wall.

FIG. 7 is a front view of the lowermost seal portion in the case of a unit type curtain wall.

[Explanation of symbols]

2 ... upright, 5 ... bottomless, 7 ... curtain wall, 8
... Outer wall, 9 ... Draining frame, 10 ... Eave board, 20 ... Standing material, 21 ... Hollow part, 23 ... Recessed groove, 40 ... Seal material receiving member, 41 ... Main body part, 42 ... Projection part, 43 ... Groove, 45 ... Wet sealing material.

Claims (1)

[Claims] 1. In a curtain wall in which the lowermost part of the curtain wall is separated from the ground, and the curtain wall projects more to the outside of the room than the outer wall below, a drainer frame is attached to the lateral member at the lowest part of the curtain wall. The outdoor side edge of the eaves board is supported on the indoor side portion of the draining frame, the sealing material receiving member is attached to the inner peripheral surface of the draining frame, and the end portion of the sealing material receiving member is projected from the end surface of the draining frame, Rainwater that has been filled between the vertical members adjacent to the left and right by filling a wet sealing material between the end faces of the draining frames adjacent to the left and right and the lower surfaces of the vertical members adjacent to the left and right, and using the sealing material receiving member as a backup material. The drainage structure of the curtain wall, wherein the drainage hole is formed in the drainage frame so that the water flows into the drainage frame along the sealing material receiving member.