JP2755892B2 - Watertight structure of unit curtain wall - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a watertight structure at an intersection of curtain wall units in a unit type curtain wall comprising a plurality of curtain wall units.

[0002]

2. Description of the Related Art In recent years, unit-type curtain walls constructed by transporting a plurality of factory-produced curtain wall units to a construction site and joining them to a floor slab of a building or a cubicle attached between the floor slabs have been developed. Since it has the advantage that the quality and the on-site construction work are reduced and the construction period can be shortened, it has been widely used.

[0003] In this unit type curtain wall, there is a problem that it is difficult to reliably and efficiently perform watertightness and airtightness at joints between the curtain wall units. That is, generally, there are two methods of securing watertightness, a wet method and a dry method. The wet method is a method of caulking joints between curtain wall units attached to a building using a putty-like filler,
There has been a problem that the number of work on the construction site has increased and the construction period has been prolonged, and the watertightness has varied depending on the skill of the worker, and there has been a problem that the quality cannot be maintained at a constant level.

[0004] On the other hand, the dry type means that a sealing material is attached in advance around a frame of a curtain wall unit, and when each unit is attached to a building, the sealing materials of adjacent units or the sealing material and the frame are brought into close contact with each other. This is a method to increase watertightness. This dry method has the advantage of improving the on-site workability and shortening the construction period. On the other hand, the sealing material bends at the corners (corners) of the frame with a curvature, so that the unit is vertically and horizontally oriented. At the intersections adjacent to each other in the direction, there is a problem that the sealing material of each unit does not completely adhere to each other, and complete watertightness cannot be maintained.

[0005] Further, in any of the methods, when an interlayer displacement occurs in a building due to an earthquake, a strong wind, or the like, each curtain wall unit comes into contact with and separates from each other, so that there is a problem that the watertightness between the units is reduced.

Therefore, the applicant of the present invention fits the vertical frame and the upper frame of one of the adjacent curtain wall units into the concave portions of the vertical frame and the lower frame of the other curtain wall, and fits into the concave portions. By providing a sealing material in the portion where the seal has been provided, a watertight structure has been devised which can reliably seal even if interlayer displacement occurs and does not reduce watertightness. That is, as shown in FIG. 6, among the four curtain wall units 60 arranged at the intersection, between the units 60 adjacent in the horizontal direction, the vertical frame 64 of one unit 60 and the other unit 60 A protruding piece 67 is formed extending into the recess 66 of the vertical frame 65, and the protruding piece 67 and the inner surface of the recess 66 are arranged so as to overlap in the indoor and outdoor directions.
8 is brought into close contact with the concave portion 66 to form a watertight structure. Also,
Between the curtain wall units 60 vertically adjacent to each other, a protruding piece 72 is formed in the upper frame 69 of the lower unit 60 so as to extend into the recess 71 of the lower frame 70 of the upper unit 60. The sealing material 74 fitted in the upper groove 73 is brought into close contact with the inner surface of the concave portion 71 to form a watertight structure.

Further, each curtain wall unit 60
At the intersection where is adjacent, the sealing material 74 attached to the projecting piece 72 of the unit 60 is attached to the end face of the projecting piece 72 and the upper frame 6.
The seal member 74 is provided so as to extend to the end face 9 to form a watertight structure.

[0008]

However, in the watertight structure shown in FIG. 6, the vertical frame 65 of the curtain wall unit 60 is not provided.
And the concave portion 71 of the lower frame 70 is continuous, and the lower end surface of the projecting piece 67 fitted in the concave portion 66 is in contact with the upper surface of the sealing material 74 fitted in the concave portion 71. . For this reason, when each curtain wall unit 60 comes into contact with or separates from each other due to interlayer displacement, the projection 67 may be caught by the seal member 74 and may not return to the original state, and there is a possibility that the protrusions may not sufficiently follow the interlayer displacement.

An object of the present invention is to provide a unit-type curtain wall watertight structure which can reduce the on-site work, shorten the construction period, improve the reliability of watertightness and airtightness, and sufficiently follow interlayer displacement. To provide.

[0010]

The present invention comprises two vertical frames,
In a unit-type curtain wall using a curtain wall unit in which a panel is attached to a frame formed by an upper frame and a lower frame, a watertight structure for waterproofing an intersection of each curtain wall unit is provided. At the corner, while being in close contact with the sealing material for the intersection of another curtain wall unit laterally adjacent at the intersection, it is fitted into a recess formed in the frame of another curtain wall unit adjacent upward. Attach the intersection sealing material configured to be in close contact with the inner surface of the recess, and extend the protruding piece to one vertical frame of each curtain wall unit up to the other vertical frame of the other unit adjacent in the horizontal direction. The projecting piece is arranged outside the concave portion in which the crossing seal material is fitted. .

[0011]

In the present invention, when each curtain wall unit is installed, at the intersection, the sealing materials for the intersections of the respective units are closely adhered to each other in the horizontal direction, and the sealing materials for the intersections in the vertical direction. Fits into the recesses of the upper unit and closely adheres to each other, whereby the watertightness at the intersection is ensured. In addition, since the protruding piece extending from the vertical frame of each curtain wall unit to the vertical frame of another adjacent unit is arranged outside the recess in which the sealing material for the intersection is fitted, the protruding piece is made of a sealing material. Therefore, even if interlayer displacement occurs, the protruding piece does not catch on the sealing material even when interlayer displacement occurs, and the followability to interlayer displacement is improved. Further, by providing a sealing material in close contact with the vertical frame on this protruding piece, watertightness between the vertical frames of each unit is also ensured.

[0012]

An embodiment of the present invention will be described below with reference to the drawings. As shown in FIG. 1, a curtain wall unit 1 to which the watertight structure of the present embodiment is applied includes a glass 10 on a frame 9 assembled into a rectangular frame by vertical frames 5 and 6, an upper frame 7 and a lower frame 8. And the like are attached.

The vertical frame 5 of each curtain wall unit 1
As shown in FIG. 2, a recess 11 is formed on the side of the other unit 1 adjacent to the horizontal direction on the side of the vertical frames 5 and 6 on the side closer to the room. On the outside of the vertical frames 5 and 6,
A holding portion 12 for the glass 10 is provided, and a concave portion 13 having a width smaller than the concave portion 11 is formed on the indoor side of the holding portion 12 so as to open toward the vertical frames 5 and 6 of the adjacent unit 1. Have been.

Of these vertical frames 5, 6, the projecting pieces 14, 15 constituting the recesses 11, 13 of one vertical frame 5 are extended to the other vertical frame 6 side of the adjacent unit 1, and 6 are arranged on the indoor side of the projecting piece 16 constituting the recess 11 and on the indoor side of the projecting piece 17 constituting the recess 13, that is, outside the recesses 12 and 13. Then, a seal member 18 for a wind barrier is attached to the projection 14, and the projection 15 is
A sealing material 19 for a rain barrier is attached, and each of the sealing materials 18 and 19 is brought into close contact with each of the protruding pieces 16 and 17 to form each barrier, and the vertical frames 5 and 6 of each unit 1 are formed.
The watertightness of the joints between them is secured.

On the other hand, in the lower frame 8 of each curtain wall unit 1, as shown in FIG.
13 and the positions in the indoor and outdoor directions are the same,
2 that is continuous with
0, 21 are formed. The upper frame 7 of each curtain wall unit 1 has concave portions 20, 21 of the lower frame 8.
Protrusions 22 and 23 extended to the inside are formed. A sealing member 24 for a wind barrier and a sealing member 25 for a rain barrier are attached to the exterior side surfaces of the protruding pieces 22 and 23, respectively. , Each barrier is constituted, and the watertightness of the joint between the upper frame 7 and the lower frame 8 of each unit 1 is secured.

The vertical frame 5 of each curtain wall unit 1
At the upper corner (corner) of the frame to which the upper frame 6 and the upper frame 7 are connected, as shown in FIG.
0, 31 are attached. These sealing materials 30, 31
Are arranged along the end surface of the upper frame 7 from the concave portions 13 and 21 on the outdoor side of the frame 9 to the concave portions 12 and 20 on the indoor side, and further bent upward along the end surface of the protruding piece 22 of the upper frame 7. While being bent horizontally along the upper surface of the protruding piece 22,
The protrusion 22 is fitted into the groove 22A on the upper surface.

As shown in FIGS. 2 and 5, a seal member 32 is attached to the protruding piece 14 for closing the contact surfaces when the seal members 30 and 31 are brought into close contact with each other.

In this embodiment, a frame 9 composed of vertical frames 5, 6, an upper frame 7, and a lower frame 8 is provided at a factory.
A curtain wall unit 1 is manufactured by attaching a panel made of glass 10 or the like to each unit.
19, 24, 25, 30, 31, 32 are attached.

Then, these curtain wall units 1 are transported to a construction site and mounted on a floor slab or a slab of a building. At this time, the vertical joints and the horizontal joints of each unit 1 are sealed by the seal members 18, 19, 24, and 25 to ensure watertightness.

On the other hand, at the intersection, as shown in FIGS. 1 and 5, the seal members 30, 31 of the adjacent curtain wall units 1 are in close contact with each other to ensure watertightness in the lateral direction. Projection piece 2 of upper frame 7 of side unit 1
2, the seal members 30 and 31 are extended into the concave portions 11 of the vertical frames 5 and 6 of the upper unit 1 and are tightly attached to the inner surfaces of the upper units 1 so that the water seals in the vertical direction. Nature is secured. Furthermore, since the sealing member 32 attached to the projecting piece 14 of the vertical frame 5 blocks the sealing surfaces of the sealing members 30 and 31 at the intersection, the watertightness is further improved.

When interlayer displacement occurs due to an earthquake, strong wind, or the like, the curtain wall units 1 come into contact with and separate from each other.
At this time, as shown in FIGS. 2 and 3, the projecting pieces 14, 15, 22, and 23 of one adjacent unit 1 are connected to the other unit 1.
Between the concave portions 11 and 13 and between the concave portions 20 and 21, the interlayer displacement is absorbed. Further, even if interlayer displacement occurs, each of the projecting pieces 14, 15, 22, 23 is completely recessed.
As long as it does not deviate from 0, 21, etc., water tightness is also ensured.

According to this embodiment, the following effects can be obtained. That is, the projecting piece 14 of the vertical frame 5 extended to the vertical frame 6 side of the adjacent curtain wall unit 1,
Since the sealing member is provided not in the recess 11 of the vertical frame 6 but in the outside of the recess 11, that is, on the outer surface side of the protrusion 16 constituting the recess 11 as in the related art, the lower end surface of the protrusion 14 is fitted into the recess 11. 30 and 31 can be configured not to contact. For this reason, even if the projecting piece 14 moves due to interlayer displacement, the projecting piece 14 is not caught by the sealing materials 30 and 31 and does not return to its original state unlike the conventional case, and follows the interlayer displacement reliably and quickly. This can also prevent the curtain wall unit 1 from being damaged.

The vertical joints and horizontal joints of each curtain wall unit 1 are provided with sealing members 18, 19, 24, 25 attached to protruding pieces 14, 15, 22, 23 extending to the adjacent unit 1 side. Protrusions 16, 17 and recess 2
Since the watertightness is ensured by being closely attached to 0, 21, the joint portion can be reliably waterproofed, and the watertightness is not impaired even if interlayer displacement occurs.

Further, at the intersection of the units 1, the sealing members 30 and 31 for the intersection are brought into close contact with each other in the horizontal direction, and the sealing materials 30 and 31 of the lower unit 1 with the concave portions of the upper unit 1 in the vertical direction. Since water tightness is ensured by closely adhering to the inside, waterproofing can be ensured even at the intersection. In addition, since each of the seal members 30 and 31 is formed of an elastic sponge or the like, even if interlayer displacement occurs, waterproofing can be achieved by appropriately deforming the seal members 30 and 31.

Further, each of the sealing members 18, 19, 24, 2
5, 30 to 32 are pre-installed in the factory and are dry seal materials, so that workability at the time of construction at the construction site is improved and the construction period can be shortened. In addition, since it is manufactured in a factory, a high-quality and uniform sealing material can be obtained, the durability can be increased, and the watertightness can be improved.

The present invention is not limited to the above-described embodiment, but includes modifications and improvements as long as the object of the present invention can be achieved. For example, in the above-described embodiment, the crossing sealing materials 30 and 31 are provided separately from the other sealing materials, but the portion arranged on the upper surface of the projecting piece 22 of the upper frame 7 of the crossing sealing material 30 is moved upward. The sealing member 24 is formed so as to extend in the longitudinal direction of the frame 7 and to be integrated with the other sealing member 31 for the intersection, and to seal the sealing member 24 for the intersection 3.
0 and 31 may be shared. However, when the sealing material 24 and the crossing sealing materials 30 and 31 are separated from each other as in the above-described embodiment, when the sealing material 24 is adapted to various curtain wall units 1 having different longitudinal dimensions of the upper frame 7, the sealing material 24 is not used. Since only the length needs to be adjusted, there is an advantage that it can be easily handled.

In the above embodiment, the projecting piece 14 of the vertical frame 5 is used.
And a sealing material 32 for closing the contact surfaces of the sealing materials 30 and 31.
Is provided, but the sealing material 32 may not be provided. However, there is an advantage that the watertightness is further improved by disposing the sealing material 32. Further, the shapes of the vertical frames 5 and 6, the upper frame 7 and the lower frame 8, and the sealing materials 18, 19, 24,
The materials, shapes, and the like of 25, 30 to 32 are not limited to those in the above-described embodiment, and may be set as appropriate for implementation.

[0028]

According to the watertight structure of the unit-type curtain wall of the present invention, the on-site work can be reduced, the construction period can be shortened, the reliability of watertightness and airtightness can be improved, and the interlayer displacement can be reduced. Has the effect of being able to sufficiently follow.

[Brief description of the drawings]

FIG. 1 is a partially cutaway perspective view showing a main part of an embodiment of the present invention.

FIG. 2 is a plan sectional view of the embodiment.

FIG. 3 is a longitudinal sectional view of the embodiment.

FIG. 4 is an exploded perspective view of the embodiment.

FIG. 5 is a perspective view of the embodiment.

FIG. 6 is a perspective view showing a background art of the present invention.

[Explanation of symbols]

 1 Curtain wall unit 5,6 Vertical frame 7 Upper frame 8 Lower frame 9 Frame 11,13,20,21 Depression 14,15,16,17,22,23 Projection 18,19,24,25,32 Sealing material 30 , 31 Sealing material for intersection

Claims (1)

(57) [Claims] 1. A unit type in which a curtain wall unit comprising a frame formed by assembling two vertical frames, an upper frame, and a lower frame and a panel is attached adjacently in a vertical direction and a horizontal direction to form a wall surface. In the curtain wall,
Each curtain wall unit has a watertight structure for waterproofing the intersections adjacent to each other in the vertical direction and the horizontal direction. A sealing material for the intersection is attached to the upper corner of the frame of the curtain wall unit, and the sealing material is provided in the horizontal direction. It is configured to be in close contact with the sealing material for the intersection of the other adjacent curtain wall unit, and to be fitted into the recess formed in the frame of the other adjacent curtain wall unit in the vertical direction and to be in close contact with the inner surface of the recess. In one vertical frame of each curtain wall unit, a protruding piece is formed extending to the other vertical frame of another curtain wall unit adjacent in the horizontal direction, and this protruding piece is fitted with the crossing seal material. The watertight structure of the unit-type curtain wall, wherein the watertight structure is arranged outside the recessed portion.