JPS5936577Y2 - Connection part of curtain wall mullion body - Google Patents

Description

[Detailed explanation of the invention] This invention introduces outside air by using an outside air inlet that is formed mullionally or plainly in the fitting groove of the facing material (glass, panel, etc.) of the curtain wall. By making the pressure difference between the material fitting groove and the outside air close to equal pressure, the pressure difference prevents rainwater from entering from outside into the facing material fitting groove, thereby preventing water leakage from the curtain wall. This invention relates to a connecting part of a curtain wall mullion main body for the purpose of improving watertightness at the connecting part of the mullion main body.

The mullion main body of the curtain wall is formed to have an appropriate size in order to form an expansion/contraction allowance for thermal expansion/contraction and for convenience of transportation, and is installed taking into consideration the expansion/contraction allowance.

Conventionally, at the connecting part of the mullion main bodies of a curtain wall, there is a space between the end faces of the upper mullion main body and the lower mullion main body facing outdoors.
It was filled with an amorphous sealant such as a polysulfide sealant, and watertightness was maintained by adhesion between the sealant and the mullion body.

However, since the sealing material filling work is done on-site, the sealing material filling technology is affected by the construction conditions and work conditions, coupled with the complexity of the cross-sectional shape of the mullion body, resulting in the performance of the sealing material itself. With this type of sealant filling method, which relies heavily on water-tightness, it has become difficult to maintain stable watertightness.

In such a case, it may be possible to change the cross-sectional shape of the mullion body to a shape that facilitates the adhesion of the sealant, but this would be extremely difficult considering other conditions related to the mullion.

On the other hand, due to the structure of the curtain wall, consideration must always be given to the connecting parts of the mullion bodies to deal with expansion and contraction of the mullions due to heat.

For this reason, the sealing material is constantly subjected to forces such as compression, tension, or shearing, so there is a problem in that it is easily peeled off or broken.

This idea was made in order to solve the above problem, and was designed to be applied to the lower part of the indoor side of the part of the upper mullion main body facing outdoors, and the upper part of the indoor side of the lower mullion main body facing outdoors. a watertight eye board with a substrate to which the airtight eye board is applied, and an airtight eye board that is abutted to the lower part of the outdoor side of the part of the upper mullion main body facing the interior of the room and the upper part of the outdoor side of the part of the lower mullion main body facing the interior of the room. Furthermore, grooves formed on the upper and lower end surfaces of the watertight eye plate are engaged with notches formed at corresponding locations on the lower surface of the base of the upper mullion body and the upper surface of the base of the lower mullion body, and This invention proposes a connecting part of a curtain wall mullion main body in which positioning is achieved by engaging grooves formed on the end faces with notches formed at corresponding locations on the lower surface of the upper mullion and the upper surface of the lower mullion. This aims to improve the watertightness of the mullion main body connection part and to improve the workability of the mullion main body connection part.

Examples shown in the drawings will be described below.

Note that FIG. 1 is a cross-sectional view taken along the mullion center line showing the connection between the upper and lower mullions, and FIG. 2 is a cross-sectional view taken along the U-tt line in FIG.
The figure is an exploded perspective view showing the connecting portion of the mullion main body (however, the upper mullion main body, mullion auxiliary members, and ridges are omitted).

In Figures 1 to 3, 1 is an upper mullion main body, and 1' is a lower mullion main body, and these mullion main bodies 1゜1' also serve as joint pins 2 and brackets for attaching the mullions to the frame. They are vertically slidably connected via a joint sleeve 3.

Further, these mullion bodies 1, 1' are composed of a mullion base 1a, a portion 1b facing outdoors, and a reinforcing portion 1h facing indoors.

Reference numeral 8 denotes a mullion face material fitting groove, which is formed by the mullion auxiliary material 4 and the ridge 5 on both sides of the mullion base 1a.

In addition, in this embodiment, through the outside air inlet 4c provided by partially cutting out the protrusion 4a of the mullion auxiliary member 4,
Outside air is introduced into the space 6 formed by partitioning a part of the face material fitting groove 8 with the mullion auxiliary material, and then from the outside air inlet 4b formed by partially cutting out the mullion auxiliary material 4. Material fitting groove 8
Outside air is introduced into the inside to equalize the pressure of the outside air, which changes due to wind pressure, and the pressure inside the facing material fitting groove. It's okay.

Note that the mullion auxiliary material 4 and the ribbed edge 5 are approximately the same as the vertical end of the face material (glass) 10 that is fitted into the fitting groove 7 via the tight material 9 across the connection part of the mullion main body. It is the length.

Reference numeral 12 denotes a watertight mesh plate attached to the connecting portion of the mullion main body, and the watertight mesh plate 12 is made of a regular sealing material such as synthetic rubber such as chloroprene rubber or synthetic resin.

In addition to the watertight eye plate 12 being interposed at the connection between the upper mullion main body 1 and the lower mullion main body 1' as described above, an airtight eye plate 14 (described in detail later) is interposed on the indoor side. , an upper mullion main body 1 and a lower mullion main body 1' are connected.

In this case, the upper and lower end surfaces of the bases of the upper and lower side mullion bodies 1 and 1' are respectively formed to slope downward toward the outdoor side (
(See Figure 1).

Note that the watertight mesh board has cutouts 1c and 1c formed at the lower and upper ends of the mullion bodies 1 and 1', respectively, and in the center of the upper and lower end surfaces of the base plate 12a of the watertight mesh board 12,
Grooves 12d, 12d are formed, and these grooves 12a,
12a and the notches 1c, 1c of the upper and lower mullion main bodies 1, 1', the watertight eye plate 12 and the mullion main bodies 1, 1' are engaged, and both are supported and fixed in a predetermined position.

Further, the outdoor side surface of the substrate 12a is formed so as to be pressed against the portion facing the side material fitting groove 8 of the indoor side surface 11, 11' of the outdoor portion 1b of the mullion main body 1, 1', It is being

With the above, the watertight eye plate 12 is attached to a predetermined position,
Rainwater is prevented from entering the face material fitting groove 8 inside the mullion from outside the mullion.

In this case, the watertight mesh plate 12 protrudes like a flange so as to surround the front surface of the intermediate portion of the substrate 12a, and has a contour shape that matches the outdoor portion 1b of the mullion main bodies 1, 1'. A hole 12c provided in the support part 12b is fitted into a joint pin 2 before the upper mullion main body 1 is installed, thereby firmly supporting and fixing the watertight eye plate in a predetermined position.

Notches 1d and 1d formed at the upper and lower ends of the base of the mullion body prevent rainwater that has entered the face material fitting groove 8 side of the mullion for some reason from flowing toward the room along the edge of the upper mullion body 1. This is a cutout for draining water to prevent this.

Reference numeral 16 denotes a gap closing plate for closing the joint gap between the upper and lower mullion main body bases, and is provided as necessary.

In other words, in the curtain wall of the above embodiment, the four circumferences of the facing material 10 are formed by the facing material fitting grooves 8 and the facing material fitting grooves (not shown) which are continuously formed between the facing material fitting grooves 8 and are formed seamlessly. A space with the same pressure as the outside air is formed, but when the pressure inside the wall material fitting grooves 8 on the left and right sides of a mullion differs, the pressure that is created between the wall material fitting grooves on the four circumferences of the left and right side materials, such as at the corner of a building, etc. It closes the airflow caused by the difference and closes the gaps in order to balance the air pressure with the outside pressure in each equal pressure space.

The airtight mesh plate 14 prevents air from entering and exiting between the indoor side and the panel fitting groove 8, and the airtight mesh plate 14 has grooves 14a in the center of the upper and lower end surfaces, respectively.

14a are provided to form a substantially H-shape, and these grooves 14a,
14a are engaged with the notches le and 1e provided in the bases 1a of the upper and lower mullion bodies 1 and 1' (FIG. 1).

In addition, in order to ensure airtightness between the mullion main body 1, 1' and the ridge 5, the airtight mesh plate 14 is in contact with both sides of the airtight mesh board 140, as shown in FIGS. 2 and 3. The gaskets 13, 13 are fitted into the gasket fitting grooves 1f, 1f formed in the reinforcing portion 1h of the mullion main body (this will be explained as the mullion main body reinforcing portion 1h since it is common to the upper and lower mullion main bodies 1, 1'). These packings 13t13&i mullion body 1,1
′ extends over the entire length of .

Further, as shown in FIG. 2, a sealing material fitting groove 5a formed on the inner side surface of the rim 5 is fitted with a second sealing material 15, and this sealing material 15 is made to have the same length as the airtight mesh plate 14 or a little longer than that. .

In the above configuration, the rim 5 and the seal 13 are the mullion body 1.
, 1' maintains airtightness in the longitudinal direction, and the mullion body 1
, 1' and the airtight eye plate 14 are in contact with each other, the sealing material 15 and the airtight eye plate 14, and the mulloidal reinforcing portion 1h that is located between the airtight eye plate 14 and the gasket 13 and forms the gasket groove 1f.
The portion 1g, the sealing material 15, and the packing 13 are brought into contact with each other, and the sealing material 15 and the airtight eye plate 14 are in contact with each other at the part where the packing 13 is cut, thereby ensuring airtightness.

The water-tight eye plate 12, air-tight eye plate 14, gap closing plate 16 and joint pin 2 are attached at the lower end of the upper mullion main body 1 or the lower mullion main body 1' in advance using adhesive or the like at the factory.
Installation is extremely easy if it is attached to the top end of the frame.

In the watertight structure of the embodiment configured as described above, the upper mullion main body 1 and the lower mullion main body 1' are connected to each other using the watertight eye plate 12 and the gap closed using joint materials such as the joint pin 2 and the joint sleeve 3. After the battens 16 and the airtight battens 14 are sandwiched and connected, the mullion auxiliary members 4 are attached to the mullion bodies 1, 1'.

As described above, according to this embodiment, the outdoor portions 1b, 1b and the batten board 12a are overlapped to prevent raindrops having kinetic energy from entering the indoor side from the gaps in the mullion joints. However, some raindrops enter the indoor side due to capillary action, and such raindrops do not reach the airtight material 14 and can be prevented.

In other words, it flows downward within the face material fitting groove 8 and is appropriately discharged from the blind portion.

This is caused by capillary action between the mullion body 1゜1' and the watertight eye plate 1.
Even if there is rainwater that enters the face material fitting groove 8 from between the
Since the inside of the face material fitting groove 8 is configured to have the same pressure as the outside air, the air falls through the face material fitting groove 8 due to gravity, is guided to the lower side, and is easily drained from the drain hole formed in the face material fitting groove 8. This is because that.

If the upper and lower ends of the base of the mullion main body are provided with slopes and notches 1d that face the outdoors as in the embodiment, rainwater that flows along the upper and lower ends of the base 1a toward the airtight batten 14 will be eliminated, further improving watertightness. do.

Note that rainwater that reaches the groove 12d connected to the lower end of the upper mullion main body 1 due to capillary action can be cut off by placing a space between the groove 12d and the notch 1c as shown in FIG.
Watertightness is further improved.

In addition, the face material fitting groove 8 has the same pressure as the outside air due to the outside air introduction port 4c provided in the mullion auxiliary member 4 or the outside air introduction port provided in an open position. It is highly unlikely that rainwater will enter the groove 8.

The watertight structure of this invention, which is constructed as described above, relies on watertightness only by filling sealing material between the ends of the upper and lower mullioned bodies of the mullioned body connection part and adhering it, unlike the conventional sealing method. Moreover, since the watertight eye plate 12 is placed across the indoor sides of the parts facing the outdoors of the upper and lower mullions, no force is applied due to the expansion and contraction of the mullions 1 and 1'. Since this watertight mesh board 12 is in contact with the indoor side of the part facing the outdoors of the mullion and is located in a place that is not exposed to direct sunlight, there is no risk of damage or deterioration, and the initial performance can be maintained over a long period of time. It is easy to construct, is unaffected by weather conditions during construction, and its performance is not affected by the quality of construction technology.

Furthermore, according to this invention, both the upper and lower sides of the vertical body 1°1'
Since there is no need to fill the joints with sealant, it is possible to narrow the gap between the joints to the extent that they do not touch when the mullions are stretched to their maximum due to heat, which is good in terms of design. It has excellent effects such as

In addition, airtight eyelets are provided in the gaps that occur in the connecting parts of the mullion main body facing the interior of the room. Since the internal pressure can be maintained, the watertightness of the entire curtain wall will not be compromised at the joints of the mullion bodies.

Further, since the watertight eye plate and the airtight eye board are engaged using the notches formed at the base of the mullion main body, installation and positioning are easy.

[Brief explanation of the drawing]

Figure 1 is a sectional view taken along the center line of the mullion showing the connection between the upper and lower mullions, Figure 2 is a sectional view taken along the line ■-■ in Figure 1, and Figure 3 is an exploded view showing the connection between the mullions. FIG. In the figure, 1... upper mullion body, 1'.
...lower mullion body, 1a...base of curved mullion main body,
1b...The part of the mullion body facing the outdoors, 1h.
...Reinforcement part 1c that constitutes the part of the mullion body facing the interior. 1e...notch, 4...mullust auxiliary material,
4c... Outside air inlet, 5... Ribbed edge, 8
...Face material fitting groove, 10. -0... Face material, 12.
...Watertight plate, 12d...Curved groove, 14...
・It is an airtight batten.

Claims (1)

[Scope of utility model registration request] At the connection of the gero mullion main body to the curtain wall, which controls the rain by introducing outside air into the facing material fitting grooves formed on both sides of the mullion, the interior of the part of the upper mullion main body facing outdoors A watertight eye board with a substrate that extends over and abuts the lower part of the side surface and the upper part of the indoor side surface of the part of the lower mullion body facing the outdoors, and the outdoor gauge part of the part of the upper mullion body facing the indoor part. The upper mullion main body also includes airtight eye plates that span over and abut against the upper portions of the outdoor surfaces of the portions of the lower mullion body that face the interior of the room, and grooves formed in the upper and lower end surfaces of the watertight eye plates are connected to the upper mullion body. The grooves formed on the upper and lower end surfaces of the airtight batten are engaged with the notches formed at corresponding locations on the lower surface of the base and the upper surface of the base of the lower mullion body, and the grooves formed on the upper and lower end surfaces of the airtight batten are engaged with the grooves formed on the lower surface of the base of the upper mullion body and the lower mullion body. A connecting part of a curtain wall mullion main body that is positioned by engaging with a notch formed at a corresponding location on the upper surface of the base.