JP2000120200A - Thin curtain wall with uniform-pressure space of sufficient capacity - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a curtain wall maintaining a beautiful wall surface over a long period by forming between horizontally adjacent wall units a uniform- pressure space having a sufficient capacity and communicated to the outside, for smoothly draining rainwater failing on the wall surface. SOLUTION: Wall units each comprising an aluminum frame integrated with a steel frame are arranged adjacent to one another, both horizontally and vertically, to construct a curtain wall. A uniform-pressure space V separated by rain barriers 310 is provided at the vertical joint between the horizontally adjacent wall units and a middle ventilating cutoff cover 170 formed with ventilating holes communicating the uniform-pressure space V to outside air is mounted on the right and left frames 110, 120 of the aluminum frame. Since the uniform-pressure space V has a sufficient capacity and communicates with outside air, it does not enter into a decompressed condition that promotes entrance of rainwater.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION
The present invention relates to a curtain wall which is attached to a wall surface of a large building such as a building or an apartment house at a building site, and suppresses rainwater from entering vertical joints between wall units.

[0002]

2. Description of the Related Art In a building constructed of a steel frame, the construction period is shortened by attaching a curtain wall assembled in a factory at a construction site. As this type of curtain wall, for example, as shown in FIG. 1A, a wall unit is used in which an aluminum frame having a plurality of face plates 2 fixed to a steel frame 1 assembled in a frame shape is integrated. One wall unit has a size of about 2.5 m in width and about 4 m in height. After the wall unit is lifted by the crane 4 via the hanging member 3 provided on each wall unit and arranged at a predetermined location, the wall unit is stacked on the lower wall unit. Positioning protrusions 5 are provided on the top surface of the wall unit, and the positioning protrusions 5 are fitted into holes (not shown) provided on the bottom surface of the upper wall unit, so that the positioning protrusions 5 are positioned with respect to the lower wall unit. The upper wall unit is set in a predetermined positional relationship. Next, the back side of the wall unit is attached to the floor structure 7 of the building using the mounting bracket 6.

[0003]

In this type of curtain wall, in order to reduce the load applied to the vehicle body of the building,
Light weight is strongly required. Although the weight can be reduced by reducing the thickness of the curtain wall, the performance required for the curtain wall cannot be satisfied simply by reducing the thickness. That is, when a plurality of curtain walls are stacked in the horizontal direction and the vertical direction as shown in FIG. 1, a gap is generated at a joint between adjacent units. In order to prevent rainwater from entering the gap, it is necessary to incorporate a constant-pressure mechanism having a constant-pressure space having the same pressure as the outside air pressure. Also,
When the rainwater that has poured onto the wall collects and flows, it becomes a torrent and flows down and scatters on the wall, not only disturbing residents and pedestrians, but also part of the wall is easily stained by the rainwater, The result is a disfiguring result.

[0004]

SUMMARY OF THE INVENTION The present invention has been devised to solve such a problem, and has a specific cross-sectional shape on the left and right frames of an aluminum frame which is integrated with a steel frame to form a wall unit. By forming an equal-pressure space with sufficient volume when the wall units are abutted horizontally using aluminum extruded profiles, it is possible to collect a large amount of rainwater at specified locations on the wall and to prevent rainwater from penetrating into the interior of the wall. It is an object of the present invention to provide a wall unit which prevents the wall unit and maintains a beautiful wall surface for a long time. The curtain wall to which the present invention is directed is a wall unit obtained by integrating an aluminum frame with a steel frame, and forms a wall surface by arranging a plurality of wall units in a horizontal direction and a vertical direction. The aluminum frame of each wall unit is specifically made of a right frame, left frame,
A frame structure is provided in which the upper frame and the lower frame are connected in a quadrangular frame shape, and a plurality of intermediate frames made of extruded hollow aluminum members are interposed between the right frame and the left frame. The peripheral edge of the face plate is fixed to the plane portions of the upper frame, the lower frame, and the intermediate frame, and a plurality of face plates are provided in the vertical direction across the upper frame and the intermediate frame, and between the intermediate frame and the lower frame. The upper frame and the intermediate frame are each provided with a draining frame having a flowing water surface that is lowered toward the front. A gasket having an arc-shaped outer periphery and a hollow bulge is mounted on four sides of the frame structure.

In the right frame and the left frame, a front side space portion and a back side space portion which form a plane portion for fixing a face plate are connected at a side portion via a gap, and a projection forming a mounting space for a rain barrier is provided. A projection formed on a side of the front space portion and forming a gasket mounting space has a cross-sectional shape formed on a side of the back space portion. The upper frame is integrated with the lower space that forms the flat part for fixing the face plate and the upper space that has the projections that form the gasket mounting space, and the inclined upper surface on which the flowing surface of the drain frame sits is lower. The mounting space formed on the upper side of the space portion and into which the mounting flat portion of the drain frame is fitted has a cross-sectional shape formed on the front surface of the upper space portion. The lower frame has a cross-sectional shape in which a lower space portion and an upper space portion forming a flat portion for fixing a face plate on the front surface are integrated, and a projection for mounting a gasket is formed on a lower surface of the upper space portion.

The wall units are arranged in a horizontal direction and a vertical direction such that the gaskets are pressed against each other. An equal pressure space is formed between horizontally adjacent wall units. The equal pressure space is defined by the front side space, the back side space and the side of the right frame and the left frame, and the back side is sealed by a gasket that is in close contact with each other, and the rain is inserted into the mounting space of the right and left frames. The front side is separated from the outside by a barrier. The head of the rain barrier is fitted into the mounting space of the right frame or the left frame, and the thin end faces the mounting space of the left frame or the right frame. The constant pressure space communicates with the outside air through the ventilation holes of the intermediate ventilation / waterproof cover attached to the side surfaces of the right frame and the left frame. Between the horizontally adjacent wall units, a drain / water blocking block is inserted and fixed between the drain frames mounted on the respective upper frames. The drain / water blocking block includes an elastic body that blocks horizontal running rainwater flowing on the drain frame and vertical running rainwater flowing vertically downward along the vertical joint. The constant pressure space communicates with the outside air even between the elastic bodies of the drainage / waterstop block.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An aluminum frame of a curtain wall according to the present invention comprises a right frame 110, a left frame 120 (FIG. 3), an upper frame 130 and a lower frame 140 made of extruded aluminum as shown in FIG. Are combined to form the frame structure 100. Since a plurality of face plates 200 are attached to the frame structure 100 to form a wall unit, an intermediate frame 15 for fixing the face plates 200 is provided.
0 is passed. The face plate 200 is a stainless steel, aluminum plate or the like having excellent corrosion resistance, and is usually 2.5 mx 1 m.
A plate material of about the size is used, and two or three intermediate frames 150 are inserted between the right frame 110 and the left frame 120 depending on the height of the curtain wall.
The right frame 110 and the left frame 120 have the same cross-sectional shape as shown in FIGS. The flat portions 111 and 121 are places where the face plate 200 is fixed, and the side portions 112 and 122 extend in the depth direction from the back surfaces of the flat portions 111 and 121, and
Rectangular front side space portions 113 and 123 are provided at the corners between the side portions 112 and 122 and the side portions 112 and 122.

On one side of the front side space portions 113 and 123, mounting projections 114 and 124 for mounting the rain barrier 310 (FIGS. 6 and 7) are provided. Mounting projection 114, 1
Reference numeral 24 denotes a position slightly retreated from the flat portions 111 and 121. When the face plate 200 is mounted on the flat portion,
Sealant filling space g between the mounting projections 114 and 124
To form a _1. Side portions 112 and 122 are front side space portions 11.
3, 123 and extends to the rear side,
On the sides of the frame 125, grooves 116 and 12 for attaching bolts for fixing to the steel frame 430 (FIG. 7).
6 is provided inside. Side portions 112, 12 connecting front side space portions 113, 123 and back side space portions 115, 125.
2 is slightly thicker to ensure strength. Mounting protrusions 117 and 127 for mounting the gasket 320 are connected to one side of the rear space portions 115 and 125, and the upper frame 130 and the lower frame 140 are connected to the inner surfaces of the rear space portions 115 and 125. Screw pockets 118, 12 for
8 are provided.

An upper frame 130 and a lower frame 140 are provided at the upper and lower ends of the right frame 110 and the left frame 120, respectively.
Are connected, and the number of intermediate frames 150 according to the height of the curtain wall is attached to the intermediate portion. The upper frame 130 is made of an extruded aluminum material having a sectional shape as shown in FIG. A flat portion 131 to which a face plate is attached is provided in a lower front part of the upper frame. A lower space portion 132 is provided on the back side of the flat portion 131, and an upper side of the lower space portion 132 is an inclined upper surface 133 slightly downward toward the front. Lower space 1
The forward angle of 32, groove defining the sealing material filling space g ₂ between the face plate 200 attached to the flat portion 131 is formed. Above the lower space 132, an upper space 134 partitioned by ribs is provided. A locking projection 135 is provided on the upper side of the front side of the upper space 134, and the lower part of the front side is slightly receded from the inclined upper surface 133 of the lower space 132. Accordingly, the mounting space g ₃ for mounting a draining frame 160 (FIG. 4) on the front of the upper space portion 135 is formed.

[0010] a pair of projections projecting from the upper end corner portion of the upper space 136, 136 is bent in the direction of the upper approach each other, a space g ₄ during which wears the gasket 320. One of the projections 136 protrudes to the front, splash stop fins 330 space g ₅ (FIG. 6) is attached is formed between the locking protrusion 135. The projection 137 protruding from the bottom wall of the lower space portion is bent to the rear side,
It has a wall unit in a space f ₁ the head 411 of the bolt 410 which is used to secure the steel frame 430 (FIG. 5) is housed. Also, the lower space 1
32, an upper frame 130 is provided on the inner surface of the upper space 134.
A screw pocket 138 is formed for accommodating a screw 421 (FIG. 2) used when connecting to the right frame 110 and the left frame 120. The lower frame 140 is shown in FIG.
The lower space 142 extending vertically and the upper space 143 extending horizontally are formed on the back side of the flat surface 141 to which the face plate 200 is attached, made of an extruded aluminum material having a cross-sectional shape as shown in FIG. It has. Lower space part 14
The second rear side 144 serves as a plane on which the splash fin 330 abuts.

[0011] projections 145 projecting from the bottom of the upper space portion 143 forms a space g ₄ for mounting the gasket 320. Projection 146 protruding from the upper side of upper space portion 143
Is a space f ₁ for accommodating the head 411 of the fixing bolt 410.
Work as Screw pockets 148 are formed on the inner surfaces of the lower space 142 and the upper space 143. The intermediate frame 150 is made of an extruded aluminum material having a sectional shape as shown in FIG. 3E, and includes an upper flat portion 151 and a lower flat portion 152 to which upper and lower face plates 200 are attached. The upper space portion 153 and the lower space portion 154 on the back side of the upper flat portion 151 and the lower flat portion 152 have a shape integrated via a rib, and the fixing bolt receiving space f ₁ is provided on the back side. Are formed. On the front side, the upper space 153 and the lower space 154 are separated. The upper side of the lower space part 154 facing the upper space part 153 is an inclined upper surface 155 slightly lowered forward. The front end portion of the inclined upper surface 155, the groove serving as a sealing material filling space g ₂ is formed. A groove is also formed at the rear end of the inclined upper surface 155, and works as a mounting space g ₃ for the drain frame 160 together with the groove on the upper space 153 side. Screw pockets 158 are also formed on the inner surfaces of the upper space 153 and the lower space 154.

Next, assembly of a curtain wall using the frames 110 to 150 will be described. Prior to the assembling work, the right frame 110 and the left frame 120 are, as shown in FIG. 2 (b), flat surfaces 111, 1 at a length interval in consideration of the width of the face plate 200 used for the curtain wall.
21, the front side space portions 113 and 123 are cut out. The upper and lower openings of the rear space portions 115 and 125 are closed by packing 341. The lower openings of the front side space portions 113 and 123 are closed by the packing 344. Upper frame 13
0, the lower frame 140 is connected at both ends to the right frame 110 and the left frame 120,
The plane portions 131, 141, the lower space portions 132, 142, and the upper space portions 134, 143 are cut off, leaving 7 and 147 (FIG. 2a). The packing 342 is applied to the cut end surfaces of the flat portions 131, 141, the lower space portions 132, 142, and the upper space portions 134, 143, and the openings are closed.

At the place where the intermediate frame 150 is assembled, cuts 119 and 129 (not shown) corresponding to the shape of the intermediate frame 150 are made on the right frame 110 and the left frame 120 as shown in FIG. An opening end surface of the intermediate frame 150 is also provided with a packing 34 having a similar shape.
It is closed with 3. Upper frame 1 with packing 342
Both ends of 30 are brought into contact with the side surfaces of right frame 110 and left frame 120, and screws 421 pierced through screw holes (not shown) of upper frame 130 are screw pockets 118 and 128 of right frame 110 and left frame 120. Then, a screw 421 pierced into a screw hole (not shown) of the right frame 110 and the left frame 120 is screwed into a screw pocket 138 of the upper frame 130 so that the upper frame 130 is moved relative to the right frame 110 and the left frame 120. It is fixed. Similarly, the lower frame 140 is connected to the right frame 11
0, fixed to the left frame 120.

The intermediate frame 150 is mounted on the right frame 11 with its open end closed by mounting the packing 343.
0, fit into cuts 119 and 129 of left frame 120. Then, the right frame 110 and the left frame 120
Screws 421 pierced into screw holes (not shown) are screwed into screw pockets 158, 158,.
Is fixed. The upper frame 130 and the lower frame 1
40, the right frame 110 and the left frame 120 where the intrusion of rainwater or the like is concerned before the intermediate frame 150 is fixed.
It is preferable to apply a water-repellent coating 351 to the surface portions near the upper ends of the flat portions 111 and 121. After the frames 110 to 150 are connected, the draining frame 160 and the face plate 200 are attached from the front side.
The drain frame 160 is made of extruded aluminum and has a substantially L-shaped shape as shown in FIG. The main surface of the drainer frame 160 is the mounting flat portion 1.
Water surface 1 opened at an angle slightly larger than the right angle to 62
It is 61.

The angle α between the mounting flat portion 162 and the flowing water surface 161 is such that the mounting flat portion 162 is
0, when accommodated in the mounting space g ₃ of the intermediate frame 150, flowing water surface 161 is set to be parallel to the inclined upper surface 133,155. If the water-repellent waterproofing agent is coated on the back surface of the mounting flat portion 162, the upper frame 130, the intermediate frame 150, and the drain frame 160
The rainwater is prevented from entering the space. Mounting flat part 1
Upper 163 and lower 164 62 is inserted into the groove formed by the protrusion defining the mounting space g _3. Running surface 1
61 stands upright from the mounting flat portion 162 at a position slightly above the lower end 164. A slightly thicker holding protrusion 165 is formed below the front end of the flowing water surface 161.
Pressing protrusion 165 serves to reinforce the draining frame 160, holding the upper end portion of the face plate 200 which is fixed so that there is no gap between the face plate 200 and the frame 110 to 150, a sealing material filling space g ₂ etc. Cover and water seal. In addition, since the holding protrusion 165 protrudes from the surface of the face plate 200, the rainwater R ₃ flowing to the flowing water surface 161 is dropped at a position away from the face plate 200, and the dripping of the face plate 200 is prevented.

As the face plate 200, a stainless steel plate, an aluminum plate, or the like having a thickness of about 1.5 to 3 mm, which is excellent in corrosion resistance, durability, design, and the like, is used. Depending on demand,
The face plate 200 may be subjected to various kinds of painting and coloring. The face plate 200 usually has a size of about 2.5 m × 1 m, depending on the specifications, and each frame 110 has an appropriate interval.
To 150 plane portions 111, 121, 131, 141, 1
51, 152 are fixed with stud bolts or the like. Face plate 2
00, the back of the face plate 200 and the upper frame 1
30, to fill the sealant 361 to fill the space g ₂ formed between the intermediate frame 150 (FIG. 5). The sealing material 362 is also filled in the sealing material filling space g ₁ (FIGS. 3A and 3B) formed between the right frame 110, the left frame 120, and the back surface of the face plate 200 (FIG. 7).

[0017] Next, fit the mounting plane section 162 of the draining frame 160 in the mounting space g _3, fixed to the frames 110 to 150 with screws 422 (Fig. 2). Thus, the lower frame 140 of the aluminum frame of the upper wall unit and the upper frame 1 of the lower wall unit
30 and the upper space 15 of the intermediate frame 150
3 and the lower open space 154, the front open space f ₂
(FIG. 5) has a bottom surface constituted by the running water surface 161 of the draining frame 160. In addition, if the waterproofing agent is coated on the back surface of the mounting flat portion 163, rainwater or the like does not enter the gaps between the frames 110 to 150 and the mounting flat portion 162.

The rain barrier 3 made of soft rubber, soft synthetic resin, or the like is used to waterproof each part of the wall unit on which the face plate 200 and the drain frame 160 are mounted.
10, the gasket 320 and the splash fin 330 are attached. As shown in FIG. 6A, the rain barrier 310 includes legs 312 extending from the head 311. The head 311 is hollow so as to be easily elastically deformed. The leg portion 312 becomes a thin portion 313 whose thickness is reduced in the middle. Protrusions 314 and 314 for retaining are formed on the head 311. The head 311 is shown in FIG.
The right frame 11 of one wall unit as shown in FIG.
The mounting space g ₆ defined by the mounting protrusions 114 of FIG.
a). The tip of the thin portion 313 is inserted into the rain barrier mounting space g ₆ (FIG. 3B) of the left frame 120 of the other adjacent wall unit. Of course, fitted to the head 311 in the mounting space g ₆ of the left frame 120, may be fitted a thin portion 313 in the mounting space g ₆ of the right frame 110.

The thin portion 313 is easily elastically deformed by wind pressure or the like because of its high flexibility, and forms a gap between the thin portion 313 and the mounting projection 124 that allows outside air to enter. As a result, the front side space portion 11 of the right frame 110 and the left frame 120
A portion surrounded by 3,123 and the back space portions 115, 125 becomes an equal pressure space V having the same pressure as the atmosphere. However, since the thin portion 313 has an elastic restoring force that tends to approach the mounting protrusion 124 side, the gap between the thin portion 313 and the mounting protrusion 124 does not become large enough to allow rainwater to enter. Since the constant pressure space V is provided between the front space portions 113 and 123 and the back space portions 115 and 125, a volume necessary for obtaining a sufficient equal pressure effect is secured, and the wall unit is thin. And rainwater intrusion can be suppressed. In this regard, in the curtain wall employing the conventional method, in order to secure the volume of the equal pressure space V, the wall unit itself has to be thickened, and as a result, the weight is increased and it is applied to the body of the building. The load tends to increase.
Outside air enters the constant pressure space V from a gap between the mounting protrusion 124 and the rain barrier 310, but also enters through a vent hole 173 (FIG. 8) provided in the intermediate ventilation / waterproof cover 170 (FIG. 2B). .

As shown in FIG. 8, the intermediate ventilation / waterproof cover 170 is a metal piece having an L-shaped cross section.
10, a contact surface 171 applied to the back surface of the front space portions 113 and 123 of the left frame 120. The bent portion 172 bent at a right angle from the contact surface 171 is
It is pressed against 2. A ventilation hole 173 is formed substantially at the center of the bent portion 172 in the height direction, and screw holes 174 and 174 are formed above and below the ventilation hole 173. Vent 1
73 is provided in the vertical direction substantially central portion of the bent portion 172, since the opening in the upper portion of the front open space f ₂ of the intermediate frame 150 as shown in FIG. 5, between the rainwater from the vent holes 173 is equal pressure V Do not invade. Intermediate frame 1
At the place where 50 is attached, the intermediate ventilation and waterproof cover 17
0 is inserted from the side between the front side space portions 113 and 123 and the back side space portions 115 and 125 of the right frame 110 and the left frame 120, and the intermediate ventilation / waterproof cover 170 is screwed with the screw 421 to the right frame 110 and the left frame 120. Stick to In a state where the intermediate ventilation / waterproof cover 170 is fixed, the equal pressure space V between the wall units is
Communicate with the outside air through Therefore, the constant pressure space V does not enter a reduced pressure state that promotes the intrusion of rainwater or the like, and the intrusion of rainwater or the like is reliably prevented in combination with the operation of the rain barrier 310. In addition, since it has a sufficient volume, an equal pressure effect for preventing intrusion of rainwater is sufficiently exhibited.

As shown in FIG. 6 (b), the gasket 320 has a hollow bulging portion 321 and is a quadrangular frame-shaped member composed of each side corresponding to the outer peripheral edge of the aluminum frame. It is. The bulging portion 321 has a substantially arc-shaped outer peripheral surface 3.
22 and a head 323 on the mounting side. Head 3
On 23, projections 324 and 324 for retaining are formed. The gasket 320, the right frame 110, left frame 120, the upper frame 130, the head 323 is inserted into the gasket installation space g ₄ provided on the lower frame 140. Thereby, the four sides of the aluminum frame are bordered by the gasket 320 as shown in FIG.

The splash fin 330 is mounted on the upper frame 1
6 has a length substantially equal to the width of the head 30 and has legs 332 extending from the head 331 as shown in FIG. Head 331 has a hollow shape so as to be easily inserted into the mounting space g ₅ of the upper frame 130. A flange 333 is provided between the head 331 and the leg 332.
The flange portion 333 is seated on the front surface of the locking projection 135,
The posture of the attached splash fin 330 is stabilized. When the wall units are vertically stacked, the ends of the legs 332 abut against the lower frame 140 of the aluminum frame of the upper wall unit from the rear side (FIG. 5), and the gap between the upper wall unit and the lower wall unit is formed. Close up.

The head 4 of the anchoring bolt 410 fixation bolt housing space f ₁ provided on the rear side of the frame 110 to 150
11, and the leg portion 412 is projected to the rear side (FIGS. 5 and 7). The legs 412 projecting from the fixed bolt housing space f _1, inserted into the bolt hole of the steel frame 430 assembled to the frame type (FIGS. 5, 7) (not shown), fastening the nut 413. Thus, factory assembly of the wall unit is completed. The assembled wall unit is transported to a building site and attached to a building vehicle via a conventional mounting bracket 6 (FIG. 1). When mounting the wall units, the vertically adjacent wall units are stacked as shown in FIG. The gaskets 320, 320 located between the upper wall unit and the lower wall unit are crushed by the weight of the upper wall unit and closely adhere to each other, thereby closing the gap between the horizontal joints. In addition, the splash fins 33
Since the abutment 0 comes in contact with the lower frame 140 of the aluminum frame from the back, splashes splashed by the rainwater on the drain frame 160 and the like are prevented from entering the inside of the wall from the gap between the upper and lower wall units.

As shown in FIG. 7, between the horizontally adjacent wall units, the left and right gaskets 320, 32
0 are crimped on each other to close gaps in vertical joints between horizontally adjacent units. In front of the gaskets 320, an equal pressure space V having a sufficient volume and communicating with the outside air is provided. Furthermore, the equal-pressure space V has a rain barrier 310 that allows invasion of outside air but prevents infiltration of rainwater.
Partitioned by. A drain / water stop block 180 is attached to a location where the corners of the four wall units gather (FIG. 10). The drain / water blocking block 180 is a component formed by bending a stainless steel plate into a predetermined shape by sheet metal processing, and includes an inclined surface 181 that is seated on the water flowing surface 161 of the drain frame 160 in a state of being in close contact as shown in FIG. A vertical surface 182 rises from the rear end of the inclined surface 181, and a horizontal groove 183 into which the locking projection 135 of the upper frame 130 is fitted from the rear side is formed.
Is formed on the way. The front end of the inclined surface 181 is turned downward to form a fitting portion 184 into which the front end of the flush surface 161 of the draining frame 160 fits. On the lower surface of the inclined surface 181 and the rear surface of the vertical surface 182 that are in contact with the flowing water surface 161 of the drain frame 160 and the mounting flat portion 162,
It is preferable to coat an appropriate water stopping agent in order to prevent intrusion of water. The water stopping agent is a drain / water stopping block 180 made of stainless steel plate and an aluminum drain frame 1.
It is also effective in preventing electrolytic corrosion due to metal contact with the metal layer 60.

A soft elastic body 185 such as a foamed resin or foamed rubber having high compressibility is adhered to a corner formed by the inclined surface 181 and the vertical surface 182. Soft elastic body 185
Acts as a dam that blocks vertical joints between horizontally adjacent wall units from the space above the drain frame 160 attached to each wall unit. The uniform pressure space V is formed by the soft elastic body 18 of the drain / water stop block 180.
It communicates with the outside air even between 5,185. The soft elastic body 185 is provided with a screw hole 186 for screw insertion. The screw 424 inserted into the screw hole 186 is used for draining frame 1
60 through a hole (not shown) of the right frame 110,
Screw pockets 118 and 128 of the left frame 120 (FIG. 3)
a) or (b). As a result, drainage and
The water blocking block 180 is attached, and absorbs gap displacement between adjacent wall units in the event of an earthquake or the like. The screw holes 186 are not opened to the outside because the lower frame 140 of the aluminum frame of the upper wall unit stacked on the screw holes 186 is pressed (FIG. 5).

The curtain wall attached as described above reliably prevents rainwater from entering the inside of the wall and maintains a beautiful wall for a long period of time. That is, the rainwater hitting the wall surface collides with the face plate 200 and flows down, as well as vertical joints between horizontally adjacent wall units, and horizontal joints between vertically adjacent wall units and between the upper and lower face plates 200. Some things get into the space. As shown in FIG. 12, most of the rainwater entering the vertical joints is blocked by the rain barrier 310, does not enter the equal pressure space V, and flows down as outflow water R along the outer surface of the rain barrier 310. Here, since the equal-pressure space V has a sufficient volume and communicates with the outside air, the constant-pressure space V does not enter a decompressed state that promotes rainwater intrusion. Therefore, the rain barrier 31
There is almost no rainwater entering the constant pressure space V against zero.

[0027] Even also rainwater from entering the equal pressure space V if, rainwater R ₁ which has entered flows down the inside between same pressure V (Fig. 1
2) Drainage provided for each unit at the top and bottom
The water flows out onto the inclined surface 181 at the outside air opening between the soft elastic bodies 185 and 185 of the water blocking block 180. The effluent R ₂ in which the effluent R and the intruding water R ₁ have joined is a soft elastic body 1
Since 85 acts as a dam, it flows along the inclined surface 181 of the drain / water blocking block 180 without spreading in the horizontal direction, and is discharged away from the wall surface. The amount of the effluent R ₂ is determined by the wall unit 1 because the drain / water stop block 180 is provided for each stage of the wall unit.
It becomes the quantity per sheet. In other words, rainwater R and entering water R ₁ flows down along the vertical joints is not a large amount, such as overflows in the horizontal direction. Even if the amount becomes large, it is blocked by the soft elastic body 185 of the drain / water blocking block 180 and does not flow out toward the adjacent drain frame 160.

On the other hand, the horizontal joint between the upper and lower wall units,
Lower space 154 and upper space 1 of intermediate frame 150
The rainwater R ₃ that has fallen in between
The water is discharged along 60 running water surfaces 161. The amount of discharge at this time is suppressed to a small amount per one face plate 200.
Even if a case that a large amount of rainwater R ₃ showering, since horizontal runs of rainwater R ₃ flowing on the water flow surface 161 of the draining frame 160 in the horizontal direction is restricted by the soft elastic body 185, rainwater R ₃ is a vertical joint It does not flow into the outer surface of the rain barrier 31. In addition, the equal pressure space V is provided with the intermediate ventilation / waterproof cover 17.
0 and the soft elastic bodies 185 and 185 of the drain / water blocking block 180 communicate with the outside air. Therefore, the constant pressure space V is not depressurized and does not suck the surrounding rainwater.

[0029]

As described above, in the building using the curtain wall according to the present invention, the rainwater hitting the wall surface is subjected to the running surface 161 of the drain frame 160 and the inclined surface of the drain / water stop block 180. Is discharged to the front of the wall and does not enter the inside of the wall. In addition, since the equal pressure space V having a sufficient volume and communicating with the outside air is provided between the horizontally adjacent wall units, rainwater flowing down along the outer surface of the vertical joint rain barrier 310 is also prevented. , Is discharged smoothly. Therefore, the occurrence of corrosion due to intruded water is suppressed, and a beautiful wall surface is maintained for a long period of time. In addition, since the constant pressure space V having a sufficient volume is formed in spite of the reduced thickness, a constant pressure effect effective for preventing rainwater from entering is exerted.

[Brief description of the drawings]

FIG. 1 is an explanatory view of an operation for constructing a wall surface using a conventional curtain wall.

FIG. 2 is a view showing assembly of a frame constituting a curtain wall according to the present invention (a) and installation of various packings (b).

FIG. 3 is a sectional view of a right frame (a), a left frame (b), an upper frame (c), a lower frame (d), and an intermediate frame (e) used in a curtain wall according to the present invention.

FIG. 4 is a perspective view of a drain frame mounted on the upper frame and the intermediate frame.

FIG. 5 is a side sectional view in which wall units are vertically stacked.

FIG. 6 is a sectional view of a rain barrier (a), a gasket (b), and a splash fin (c).

FIG. 7 is a plan sectional view in which wall units are horizontally butted.

FIG. 8 is a perspective view of an intermediate ventilation / waterproof cover having a ventilation hole for communicating the constant pressure space with the outside air.

FIG. 9 is a diagram illustrating the installation of a rain barrier, a gasket, and a splash fin.

FIG. 10 is a diagram illustrating mounting of a drainage / waterstop block.

FIG. 11 is a perspective view of a drainage / waterstop block.

FIG. 12 is a diagram for explaining a flowing state of rainwater that has poured down;

[Explanation of symbols]

100: frame structure 110: right frame 1
20: Left frame 111, 121: Flat part 112, 122: Side part
113, 123: Front side space portion 114, 124: Mounting projection 115, 125: Back side space portion 116, 126: Groove portion 117 for mounting fixing bolt
127: Mounting projection 118, 128: Screw pocket 119, 129: Cut 130: Upper frame 140: Lower frame 13
1,141: plane portion 132, 142: lower space portion
133: inclined upper surface 134, 143: upper space portion
135, 145: locking projection 136, 146: projection for mounting gasket 137, 147: projection for mounting fixing bolt 138, 148: screw pocket 150: intermediate frame 151: upper flat portion 15
2: Lower flat portion 153: Upper space portion 154: Lower space portion 15
5: Inclined upper surface 160: Draining frame 161: Running water surface 16
2: Flat surface part for mounting 163: Upper end 164: Lower end 170: Intermediate ventilation / waterproof cover 171: Contact surface 1
72: bent portion 173: vent hole 174: screw hole 180: drain / water blocking block 181: inclined surface 1
82: vertical surface 183: groove portion 184: fitting portion 185: soft elastic body 186: screw hole 200: face plate 310: rain barrier 311: head 312: leg portion 313: thin portion 314: retaining projection 320: gasket 321 : Bulging part 322: arc-shaped outer peripheral surface 323: head 324: retaining projection 330: splash fin 331: head 332: leg 333: flange 341-34
4: packing 351: water-repellent coating 36
1,362: sealing material 410: fixation bolt 411: Head 412: leg 413: nut 421 to 424 bis 430: Steel frames g _1, g _2: sealant filling space g _3: mounting of draining frame space g _4: gasket mounting space g _5: installing space splash stop fin g _6: rain barrier mounting space f _1: fixing bolt housing space f _2: the front open space V: between same pressure R: rainwater flowing down the outer surface of the rain barrier (longitudinal Ri rainwater) R _1: rainwater R ₂ has entered between same pressure: rainwater R ₃ flowing down merge to: horizontal joint, rainwater Furikon in between the upper and lower space portions of the intermediate frame (horizontal running rainwater)

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Akira Takahashi 1-1-12 Minato, Chuo-ku, Tokyo Nisshin Sogo Construction Materials Co., Ltd. (72) Inventor Tsuguharu Kitagawa 1-1-12 Minato, Chuo-ku, Tokyo (72) Inventor Hiroshi Kawagishi 1-25-1, Nishi-Shinjuku, Shinjuku-ku, Tokyo F-term (reference) 2E001 DA01 DA02 DA03 DA06 EA06 FA04 FA52 FA53 GA13 GA44 GA46 GA65 GA72 HB03 HB04 HD01 HE02 HF02 KA01 LA09 LA13 2E002 NA04 NB03 NC01 PA04 PA09 RA03 SA01 SA02 UA01 UA02 UB01 UB02 UB04 WA19 XA11 XA16

Claims (2)

[Claims] 1. An extruded 4 piece made of hollow aluminum extruded material
A frame structure in which a plurality of intermediate frames made of hollow aluminum extruded shape members are extended to the left and right in a rectangular frame shape, a face plate in which a plurality of vertical frames are provided with a peripheral edge fixed to a plane portion of the frame structure, A drain frame provided above the face plate and between the upper and lower face plates, and having a flowing water surface that is lowered forward, and a gasket that is mounted on four sides of the frame structure and has a hollow bulge with an arc-shaped outer periphery. Each wall unit is equipped with a right frame and a left frame that constitute a frame structure. A front side space part and a back side space part with a flat part for fixing the face plate on the front surface are connected at the side part through a gap. The projections forming the mounting space for the rain barrier are formed on the side of the front space portion, and the projections forming the mounting space for the gasket are formed on the side of the rear space portion, and have a cross-sectional shape. In the direction When a number of wall units are abutted, an equal pressure space is formed between the adjacent wall units, which is defined by the front side space portion, the side side portion and the back side space portion of the right frame and the left frame. The back side of the equal pressure space is sealed by the gaskets attached to each other being crimped to each other, the front side of the equal pressure space is partitioned by a rain barrier extending to the mounting space of the right frame and the left frame, and the right frame and the left frame are separated. A thin curtain wall having a sufficient volume of a constant-pressure space, characterized in that the constant-pressure space communicates with the outside air through a ventilation hole provided in an intermediate ventilation / waterproof cover attached to the back of the front space portion. 2. The thin curtain according to claim 1, wherein the intermediate ventilation / waterproof cover has a ventilation hole substantially at the center in the height direction of the back surface applied to the back surface of the front space portion of the right frame and the left frame. Wall.