JPS6229572B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a curtain wall rain cover mechanism formed by sequentially attaching curtain wall units assembled into units with frames, surface materials, etc. in the vertical and horizontal directions on site. It is something.

Conventionally, this type of rain closure has been done by filling the joints between the units with a seal and maintaining watertightness through the adhesive strength of this seal, but this method is dependent on the material of the seal and the quality of the on-site seal construction. There is a problem that there is variation in performance due to the seal construction, and it is almost impossible to perform complete seal construction over the entire length, making it difficult to obtain a perfect seal function. Further, there were problems such as peeling or breaking due to deterioration of the seal, or stress being applied to the seal due to thermal expansion and contraction of the curtain wall, resulting in peeling or breaking of the seal. As described above, with conventional rain closures of this type, there is a great deal of concern about variations in seal performance and long-term performance maintenance, so improvements in this regard are currently desired.

As an improvement to this, a so-called open joint type curtain wall was proposed that utilized the equal pressure principle. This is shown in Figures 4 and 5.
As shown in the figure, a horizontal space c is formed between the upper and lower units a and b, a vertical space d is formed between the left and right units, and outside air is introduced into the horizontal space c, thereby connecting the horizontal space c and the inside and outside. By making the vertical space d closed with sealing materials e and f equal to the outside pressure,
This is an attempt to improve watertightness.

In this case, the horizontal space c forms a hanging wall g from the outdoor surface of the upper unit a, and a rising wall h from the indoor surface of the lower unit b, and the upper and lower units a, b and the hanging wall g, A horizontal space c is formed between the rising wall h, a seal i is applied between the rising wall h and the upper unit a, and a gap j is formed between the hanging wall g and the lower unit b to serve as an outside air introduction port. Ta. In this case, if raindrops adhere to the sealing material i, water leakage will occur when the pressure in the horizontal space c becomes higher than the pressure in the indoor side k, so the sealing material i should be positioned higher than the gap j. I had to punish him. For this reason, it was necessary to form tall hanging walls (g) and rising walls (h) at the upper and lower ends of the unit, which made the structure of the unit extremely complicated and also resulted in poor workability. Furthermore, it is difficult to guarantee that rainwater droplets that have kinetic energy and fly in from the gap j will not completely reach the seal part i.

This invention was made in view of the above circumstances, and involves forming a horizontally continuous space between the upper and lower curtain wall units, and sealing the space by attaching a sealing material between the upper and lower curtain wall units on the indoor side of the space. The space is communicated with the outdoor wall to make the pressure equal to the outside pressure, and a drainage material is interposed in this space to prevent and drain rainwater etc. from entering the room from the outside based on the principle of equal pressure. The draining material has a first wall part vertically arranged on the indoor side and has an air hole at the bottom, and a downward slope protruding from approximately the center of the first wall part towards the outdoor side. and a second wall projecting downward from the lower surface of the slope, and a tight material is interposed between the first wall and the lower frame of the upper unit. At the same time, a tight material is interposed between the second wall and the upper frame of the lower unit, and a drainage material is formed between the locking part formed at the lower end of the first wall and the lower end of the second wall. The present invention provides a rain closing mechanism for a curtain wall, which is engaged with an upper frame of a lower unit by a locking portion.

An embodiment of the present invention will be described in detail below with reference to the accompanying drawings.

Figure 2 shows the rain protection structure of the part that connects the opening unit A and the spandrel unit B. Waku 2,
A plurality of units consisting of a lower frame 3 and vertical frames 4, 4 are arranged in series in the horizontal direction, and the upper frame 2 and lower frame 3 are fixed to the frame 7 via anchor keys 5, 5 and bolts 6, 6, respectively. There is.

The opening units A constructed in this manner are laterally connected to each other via joint battens 8 as shown in FIG. At this time, the joint part eye plate 8 is formed in a substantially H-shape or square shape in cross section, and its 4
A tight material removal groove 8a' is provided at the tip of each of the two leg parts 8a, 8a..., and the main longitudinal frame 4 of each unit The space C formed between them is kept watertight.

On the other hand, in the vertical direction of the opening unit A, each of the units A and B is connected to the lower frame 3' or upper frame 2' of the adjacent spandrel unit B with a drainage member 10 interposed therebetween. In this case, the draining material 10 is provided with a first wall 10a that stands perpendicularly to the indoor side, and a downward slope protruding from approximately the center of the first wall 10a toward the outdoor side. and a second inclined portion 10b that protrudes downward from the lower surface of the inclined portion 10b on the outdoor side.
a third wall portion 10c projecting upward from the inclined portion 10b;
a fourth wall portion 10e projecting downward from the tip of the first wall portion 10a; The lower end of the lower frame 3 or the lower frame 3' of the spandrel unit B is air- and water-tightly sealed. Further, a tight material 11b is also interposed between the second wall portion 10d and the upper frame 2 or the upper frame 2' of the spandrel unit B to seal them both. A locking portion 10a'' formed at the lower end of the first wall portion 10a and a locking portion 10d' formed at the tip or lower end of the second wall portion 10d allow the upper frame 2 or the spandrel unit B to be A space D is formed between each unit A and B connected with the draining member 10 interposed in between, and this space D is connected to the above-mentioned vertical space. It is communicated with C.

Therefore, spaces C and D are formed around each unit A or B. Spaces C and D are the lower frame 3 that covers the outdoor side of the draining material 10.
Alternatively, the air introduction holes 12, 12' provided in the hanging walls 3a, 3a' of 3', the upper frame 2 and the lower frame 3',
A slit-shaped gap between the lower frame 3 and the upper frame 2' communicates with the outside, and the insides of the spaces C and D are formed to have the same pressure as the outside air pressure.

In addition, drainage holes 13 and 14 are provided in the lower part of the inclined part 10b of the draining material 10 and the second wall part 10d, respectively, and the rainwater that has entered the space D through these drainage holes 13 and 14 is drained to the outside. It is designed to be discharged. In addition, rainwater falling from the drainage hole 14 falls on the upper surface of the upper frame 2 or 2', flows in the longitudinal direction, falls within the space C, and reaches the lower space D.
From there it is discharged to the outside. Also, the first wall portion 10
An air hole 15 is provided in the lower part of the wall 10a, and this air hole 15 allows the sealing members 16 and 17, which are attached to the inside of each unit A and B, and which engage with each other, to connect with the first wall portion 10a. The space E formed between them is similarly communicated with the outside to prevent rainwater from entering the space E, or even if rainwater should enter, it can be discharged to the outside using the same pressure principle as described above. There is.

According to the embodiment of the rain protection mechanism of the present invention configured as described above, the horizontally continuous drainage material 10 is interposed between each of the curtain wall units A and B, and the left and right curtain wall units A and A A vertically continuous joint part batten 8 is interposed to form spaces C and D that communicate with each other around the entire circumference of each unit A and B, and these spaces C and D
Since the inside of spaces C and D are formed at the same pressure as the outside air pressure, it is possible to prevent rainwater etc. from entering the room from the outside due to the equal pressure principle, and in the event that the space Even if rainwater enters the interiors of C and D, the rainwater can be quickly discharged to the outside. Furthermore, the installation is extremely simple, as it only needs to be assembled between each curtain wall unit A and B, which are assembled on site, and the construction time can be significantly shortened compared to construction using conventional sealing materials. can.

As explained above, according to the rain closure mechanism of the present invention, since the horizontally continuous space is communicated with the outdoor wall and the pressure is made equal to the outside pressure, all water intrusion is prevented due to the pressure difference. In the unlikely event that rainwater enters due to kinetic energy, etc., it can be blocked by the draining material and drained immediately. Therefore, as described above, safe watertight performance can be achieved without rainwater hitting the sealing material on the indoor wall. It is possible to maintain the performance of the seal, and there is no variation in the performance of the seal like in rain cover mechanisms using conventional sealing materials.In addition, there may be gaps in the interior sealing material due to long-term use or poor installation. Even in the event of rain, the draining material blocks rainwater, preventing water from leaking into the interior walls, and maintaining a stable rain control function over a long period of time. In particular, according to the present invention, the draining material 10 has a structure that is easy to install, and the horizontal space D is partitioned by the first wall portion 10a to form the space E, so that watertightness is extremely improved. This effect can be obtained.

Also, when compared with the conventional example shown in Figs. 4 and 5, in the conventional example, there is a gap formed on the outdoor side of the horizontally continuous space that serves as an outside air inlet, and a gap between the indoor and outdoor spaces. In the past, it was necessary to form a large height difference between the seals formed at the upper and lower ends of the unit, but with this invention, this can be done with almost the same height, and the upper and lower ends of the unit There is no need to form tall hanging walls or rising walls. This makes the structure of the unit relatively simple and improves workability.

[Brief explanation of the drawing]

FIG. 1 is a schematic front view of an embodiment of the present invention;
FIG. 2 is a sectional view taken along the - line in FIG. 1, FIG. 3 is a sectional view taken along the - line in FIG. 1, and FIGS. 4 and 5 are explanatory diagrams showing a conventional example. In the figure, A...opening unit, B...spandrel unit, C, D, E...space, 1
...Glass, 2, 2'...Top frame, 3,3'...Bottom frame, 4...Vertical frame, 5...Anchor, 6...Bolt, 7...Structure, 8...Joint part plate , 8
a...Legs, 8a'...Tight material mounting groove, 9...
...Tight material, 10... Draining material, 10a... 1st
Wall part, 10a'...Tight material mounting groove, 10
a''...Locking part, 10b...Slope part, 10d...Second wall part, 10c...Third wall part, 10d'...Locking part, 11a, 11b...Tight material, 12, 1
2'... Air introduction hole, 13, 14... Drain hole, 1
5...Air hole, 16, 17...Sealing material.

Claims (1)

[Claims] 1. In a curtain wall in which a plurality of curtain wall units are installed adjacently, a horizontally continuous space D is formed between the upper and lower parts of the curtain wall units, and the indoor sides of this space are sealed with sealants 16 and 17. At the same time, a first wall part 10a having an air hole 15 at the bottom, which opens the outdoor side to the outside air and stands perpendicular to the indoor side in the space, and approximately the center of this first wall part. A draining material 10 is constructed of a sloped part 10b that protrudes downward from the side toward the outside, and a second wall part 10d that protrudes downward from the lower surface of the sloped part. A tight material is interposed between the first wall and the lower frame of the unit, a tight material is interposed between the second wall and the upper frame of the lower unit, and a draining material is interposed between the second wall and the upper frame of the lower unit. is a curtain wall that is engaged with the upper frame of the lower unit by a locking part formed at the lower end of the first wall and a locking part formed at the lower end of the second wall. Shumai mechanism.