JPS623448Y2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to a watertight structure for a mullion-type curtain wall.

The present invention will be described below with reference to Examples.

The first diagram schematically showing the curtain wall of the present invention.
In Figures 1 and 2, mullions 2 made of a plurality of elongated sections are arranged in parallel at appropriate intervals on the outer surface of a floor slab 1 that constitutes the framework of a building, and welded to the indoor side of the mullions 1. Hook metal fittings 3 fixed by means such as
The angle member 4 attached to the outdoor end of the floor slab 1 is hooked and fixed using bolts or the like.

A curtain wall unit, such as a waist panel 5, manufactured in advance at a factory is attached to cover the outer end of the floor slab 1 with a vertical interval between the mullions 2. Note that 5A is a fireproof plate.

The above-mentioned waist panel 5 has upper and lower frames 6A made of shaped materials,
6B, the vertical frame 7, and a surface plate 8 made of a plate material are connected with screws or the like, and the inside is filled with a moisture-proof material 9 or the like. The waist panel 5 is attached between the mullions 2 using panel brackets 10 with an L-shaped cross section provided above and below the indoor side of the waist panel.

A facing material 1 such as glass is placed in the opening between the vertical sides of the waist panel 5 between the mullions 2 constructed as described above.
1 to form a window section. As shown in FIG. 1, the windows include a closing window A, a rotating window B, etc., and in this embodiment, the closing window will be explained. As can be seen from FIG. 3, face material fitting grooves 13 and 12 are formed in the lower frame 6B of the waist panel 5 located above the face material 11 and the upper frame 6A of the waist panel 5 located below it, respectively.

Prior to attaching the face material 11, a batten 14 is attached to cover the outer surface of the upper frame 6A, and an outer edge material 15 is attached to the inner surface of the mullion 2 facing both side edges of the opening. Next, the facing material 11 is fitted into the facing material fitting grooves 13 and 12, and both indoor side edges of the facing material 11 are pressed against the inner edge material 16 attached to the inner surface of the mullion 2. Since the above-mentioned batten 14, outer edge material 15, and inner edge material 16 are formed of shaped materials, they can be engaged with the upper frame 6A and the mullion 2 by snap fitting, making the installation work easy, and these can be installed from the indoor side. This is particularly advantageous for high-rise buildings. Face material fitting groove and edge material 15, 16
A glazing rope 17 (a string-like backup material made of rubber or the like) is inserted into the gap between the surface material 2 and the surface material 2, and caulked with a sealing material 18.

The structure of the present invention uses the batten 14, the outer edge material 15, and the inner edge material 16, so it is convenient for constructing a watertight curtain wall applying the equal pressure principle.

A watertight structure that applies the equal pressure principle consists of three elements: a rain partition formed on the outside of the building, an airtight part formed on the inside, and a space between the two that is made equal to the outside pressure. Ru. Specifically, an outside air inlet is provided in a part of the rain partition, and by actively introducing outside air, the pressure in the space is made equal to the outside pressure, and the wind pressure is reduced by an airtight part located on the indoor side. The structure described above prevents rainwater from entering indoors due to the difference in internal and external pressure. Therefore, the watertight structure applying the equal pressure principle does not require strict watertightness in the rain partition, and has the advantage of being extremely easy to construct compared to the conventional watertight structure.

(1) Watertight structure of window section Outside air inlets 19 and 20 are formed in the batten 14 and the upper frame 6A of the lower waist panel 5, respectively, and the outside air blown in from section C enters the face material fitting groove 12. , flows through the internal space D of the mullion 2 and instantly spreads into the face material fitting groove 13 of the lower frame 6B of the upper waist panel 5, forming an equal pressure space around the four peripheral edges of the face material 11. 21
is a notch for draining water.

(2) Watertight structure of the waist panel As mentioned above, the waist panel 5 is made up of the upper and lower frames 6 of the form material.
Since A, 6B, the vertical frame 7, and the surface plate 8 made of plate material are connected with screws, rainwater easily enters through the joints due to capillary action and pressure differences. In order to prevent this, an outside air inlet 23 is provided in the lower frame 6B of the waist panel 5 (space E between the lower frame 6B and the surface plate 8),
(Space F between the vertical frame 7 and the top plate 8) and (Space G between the upper frame 6A and the top plate 8) to form an equal pressure space. Furthermore, even if rainwater enters the inside of the mandrel, it will be discharged from the inlet 23 by gravity.

Furthermore, since there is also a space between the left and right recesses 24 of the mullion 2 and the side surfaces of the face material 11 and waist panel 5 fitted therein, the watertight structure of this portion will be explained.
The right side of Fig. 4 shows the watertight structure of the facing panel, and the left side shows the watertight structure of the waist panel. As shown in the figure, an extending flange 2A is formed by extending the outdoor side of the mullion 2 laterally.

(3) Watertight structure of face plate portion Providing the outside air inlet 25 on the extending flange 2A makes the internal space equal pressure with the outside air, but at the same time rainwater carried by the kinetic energy of the wind intrudes into the inside. . To prevent this, if a part of the outer edge material 15 covers the outdoor side of the outside air inlet 25, the outside air introduction path H passing through the inlet becomes curved, allowing air to enter but making it difficult for rainwater to enter. . Also, on the indoor side of the extending flange 2A, in the width direction of the mullion 2 and inlet 2.
It is advantageous if another outside air introduction port 26 is provided at a position on the outer edge member 15 that is offset from the outside air introduction path H since the outside air introduction path H is further curved. FIG. 4 further shows the inner edge material 16.
An inlet 27 is also provided. Note that the outside air inlet 26 of the outer edge material 15 is not required, and the outside air entering from the outside air inlet 26 is caused to flow up and down along the outer edge material 15.
It can also be introduced into the internal space D from the contact portions with the upper and lower frames 6A, 6B. By bending the outside air introduction route in this way, rainwater will hardly enter the space between the mullion 2 and the facing material 11, and even if splashes of rainwater enter the space, the pressure within the space will be equal to the outside air. Due to gravity drainage. Furthermore, the outside air introduced from the outside air introduction path H also spreads to the upper and lower face material fitting grooves 13 and 12. Incidentally, 22 is a gasket constituting an airtight part on the indoor side.

(4) Watertight structure of waist panel An elastic molded sealing material 29 fitted into the C-shaped channel 28 of the vertical frame 7 is provided between the vertical frame 7 of the waist panel 5 and the outdoor surface of the extension flange 2A. The gap between them is sealed over almost the entire height of the waist panel 5. A portion (not shown) of the tongue-shaped portion of the molded sealing material 29 is cut out to measure the equal pressure between the outside air and the internal space.

As described above, in the present invention, since the outside air inlet is provided in the mullion, outside air can be actively introduced into the mullion, and rainwater can be prevented from entering according to the equal pressure theory. Furthermore, since the outside of the outside air inlet is covered with an outer edge material, only outside air can be introduced while preventing rainwater from flying in due to the kinetic energy of the wind. Moreover, this outside air inlet is not visible from the outside of the building, so it does not degrade the appearance.

[Brief explanation of drawings]

Figures 1 and 2 are a front view and a vertical sectional view schematically showing the curtain wall of the present invention, Figure 3 is a sectional view taken along the - line in Figure 1, and Figure 4 is taken along the - line in Figure 1. FIG. 1... frame (floor slab), 2... mullion, 2A
... Extending flange, 11 ... Face material, 15 ... Outer edge material, 25 ... Outside air introduction port, H ... Outside air introduction path.

Claims (1)

[Scope of utility model registration request] It is a watertight structure of a curtain wall in which mullions are arranged in parallel on the outer surface of a building frame, and face materials are attached between the mullions through outer edge materials, and the outdoor portion of the mullions 2 is attached to the side. Extend flange 2
A and an outside air inlet 25 is bored in the extending flange, and an outer edge member 15 that engages with the mullion is placed in a covering manner on the outdoor side of the inlet, so that air can pass through the inlet. A watertight curtain wall structure with an outside air introduction path H configured in a meandering manner.