JP3716290B2 - Lateral joint structure in curtain wall - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a horizontal joint structure that prevents intrusion of rainwater or the like from a horizontal joint gap generated between outer wall panels in a curtain wall.
[0002]
[Prior art]
Conventionally, the waterproofness of the horizontal joint gap generated between the outer wall panels of the curtain wall is filled with a sealing material made of a polymer compound by an on-site wet method.
[0003]
[Problems to be solved by the invention]
In general, in urban areas with many narrow areas, construction without external scaffolding is required due to the short distance to the neighboring house, but in conventional joint construction, work is performed when filling the sealing material from the outside of the outer wall panel. It was necessary to assemble a foothold for this purpose and could not answer such a need. In addition, the filling operation takes time, and the construction time is considerably increased.
[0004]
The present invention has been made for the purpose of providing a dry horizontal joint structure excellent in workability and water-repellent property in place of such a conventional wet sealant.
[0005]
[Means for Solving the Problems]
In order to solve the above-mentioned problems, the present invention is provided in a horizontal joint gap formed between the upper and lower outer wall panels constituting the curtain wall, and passes through the horizontal joint gap from the upper outer side of the lower outer wall panel. A draining member that rises inside the lower end of the upper outer wall panel is engaged and fixed to an attachment member that is attached to the upper end of the lower outer wall panel , and is attached to the lower outer wall panel along the lateral direction. A curtain wall structure in which a water return portion for preventing jumping of rainwater or the like is formed at a rising portion of the draining member, wherein a cut long hole is formed in the mounting member, and the lower outer wall panel is mounted Insert the mounting member from the side with respect to the suspension bolt for hanging and fixing to the beam, and insert the suspension bolt into the cut long hole. By attaching order, characterized in that fixing the mounting member to the upper end of the lower exterior wall panels.
[0006]
Thereby, joint construction can be performed without requiring any work from the outside of the outer wall panel simply by attaching a draining member to the lower outer wall panel and installing the upper outer wall panel.
[0007]
Further , a projecting piece protruding inward from the lower frame in the upper outer wall panel is formed, and the space below the rising portion on the upper side of the projecting piece is made of wind, rainwater, etc. It is a decompression space to weaken the momentum.
[0008]
Further , the water return portion and the projecting piece are arranged vertically so as to overlap in the inner and outer directions.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
An embodiment of the present invention will be described in detail with reference to the drawings. FIG. 1 shows a horizontal joint structure in a horizontal joint gap between upper and lower outer wall panels. In the figure, (1) is an outer wall panel which is an outer wall component of the curtain wall, and is composed of a plate-like base material (2) and a rectangular frame-like frame material (3). The upper frame (4) and the left and right frames (5) and (5) in the frame material (3) are made of C-shaped steel. The lower frame (6) includes a vertical piece (7) disposed along the inner surface of the lower end of the substrate (2), and a horizontal piece (8) extending from the upper end of the vertical piece (7) toward the inside of the building. And a mounting piece (9) rising from the inner end of the horizontal piece (8).
[0010]
(10) is a joiner fixed to the upper surface of the flange of the beam (11) with a bolt (12). The vertical plate (13) of the joiner (10) is attached to the lower frame (6) of the upper outer wall panel (1). ) Is fixed by mounting bolts (14). Further, the upper frame (4) of the lower outer wall panel (1) is fixed to the horizontal plate (15) of the joiner (10) by the suspension bolt (16). (17) is a tightening nut screwed to the mounting bolt (14), (18) is a nut for preventing unscrewing screwed to the suspension bolt (16), and (20) is screwed to the suspension bolt (16). Combined tightening nut.
[0011]
In the horizontal joint gap (21) between the upper and lower outer wall panels (1) (1) arranged in this way, a draining member (31) is provided via a mounting member (30). The mounting member (30) is attached to the lower outer wall panel (1) before the upper outer wall panel (1) is built. Arranged at intervals. Further, the draining member (31) is arranged side by side so as to straddle these attachment members (30). Hereinafter, the structure of the attachment member (30) and the draining member (31) will be described in detail.
[0012]
First, the attachment member (30) is made of an aluminum plate, and the attachment piece (32) fixed to the upper frame (4) in the lower outer wall panel (1) and the outer end of the attachment piece (32). The upright vertical piece (33) and the support piece (34) joined to the upper end of the vertical piece (33) are integrally formed.
[0013]
As shown in FIG. 2, the attachment piece (32) is formed with a long cut hole (35) for insertion of the suspension bolt (16) opened from the center to the side portion. Accordingly, with the tightening nut (20) loosened, the mounting piece (32) is inserted from the side, the suspension bolt (16) is inserted into the long cut hole (35), and the tightening nut (20) is inserted in this state. By tightening, the mounting piece (32) is fixed to the upper frame (4).
[0014]
The mounting piece (32) is formed with two screw holes (36) and (36). As shown in FIG. 3, the screws (37) and (37) are provided where there are no suspension bolts (16). ) Are inserted into the screw holes (36) and (36) and tightened to be fixed to the upper frame (4). Furthermore, the inner front end of the mounting piece (32) is bent downward to form a turning piece (39), and the turning piece (39) abuts against the inner surface of the upper frame (4), The mounting piece (32) prevents rattling and rotation.
[0015]
The support piece (34) rises from the outside of the lower outer wall panel (1) to the inside of the vertical piece (7) of the lower frame (6) in the upper outer wall panel (1) through the horizontal joint gap (21). ing. The lower end of the support piece (34) is bent outward to be a first locking claw (40), and the upper end is bent inward to be a second locking claw (41). Yes. In addition, a pair of waterproof materials (42) (42) made of a foaming agent or the like is attached to the upper surface of the support piece (34).
[0016]
On the other hand, the draining member (31) is made of an aluminum plate and has a decorative piece (50) disposed on the outer side of the lower outer wall panel (1) and a horizontal joint gap (21) from the upper end of the decorative piece (50). An inclined piece (51) penetrating through and an upright piece (52) rising from the inner end of the inclined piece (51) are integrally formed.
[0017]
The decorative piece (50) is formed in a stepped shape having a lateral groove at the center thereof, and a lower end thereof is bent inward to form a first engagement groove (54). The upper end of the rising piece (52) is bent in an L shape inward to form a second engagement groove (55). As a result, as shown in FIG. 4, the draining member (31) is engaged with the first engaging groove (54) of the draining member (31) hooked on the first locking claw (40) of the mounting member (30). Is rotated in the direction of the arrow in the figure, and the draining member (31) is engaged by engaging the second engaging groove (55) of the draining member (31) with the second locking claw (41) of the mounting member (30). Is pressed against the waterproof material (42) of the support piece (34) of the mounting member (30), and can be engaged and fixed with one touch without using screws or the like.
[0018]
Also, the adjacent end portions of the draining members (31) and (31) adjacent to each other are engaged and fixed together with one mounting member (30), thereby the mounting member necessary for mounting the draining member (31). Cost can be reduced by reducing the number of (30). Moreover, in this case, the gap between the adjacent draining members (31) (31) is closed by the mounting member (30), and between the end of the draining members (31) (31) and the mounting member (30). Since the waterproof material (42) (42) is interposed in the rainwater, it is possible to prevent rainwater from entering from the connecting portion. In addition to the end portion of the draining member (31), for example, the central portion may be attached to the attachment member (30). In this case, the mounting strength of the draining member (31) can be improved.
[0019]
The rising piece (52) is provided with a water return piece (56) projecting outwardly at almost the center of its outer surface, so that rainwater entering from the lateral joint gap (21) jumps over the rising piece (52). Is preventing. Further, the vertical piece (7) is placed in a space communicating with the horizontal joint gap (21) between the rising piece (52) and the vertical piece (7) of the lower frame (6) in the upper outer wall panel (1). By arranging the protruding piece (58) bent at the lower end inward and the water return piece (56) vertically so as to overlap inward and outward as shown in the figure , the horizontal joint gap (21) A decompression space (57) is formed to weaken the momentum of wind and rainwater that has entered from the inside and prevent entry into the building.
[0020]
FIG. 5 shows a state in which the outer wall panel (1) is installed. The lower outer wall panel (1) is installed after the draining member (70) is attached to the foundation (61), and the upper outer panel ( In 1), the water draining member (31) is attached to the lower outer wall panel (1) and then built. Thereby, joint construction can be performed without requiring any work from the outside of the outer wall panel (1).
[0021]
【The invention's effect】
As described above, according to the present invention, the draining member is attached to the lower outer wall panel and the upper outer wall panel is built, and joint work is performed without requiring any work from the outside of the outer wall panel. Therefore, it is not necessary to build a work scaffolding as in the conventional joint construction, and it is possible to meet the demands of construction without a scaffold in a narrow area, and the construction time can be greatly shortened. .
[0022]
In addition, the extremely simple structure that only forms the water return part at the rising part of the draining member can prevent rainwater that has entered from the horizontal joint gap from jumping over the rising part and entering the inside of the building. A high water-stopping property can be ensured without requiring a troublesome operation of filling the horizontal joint gap with a watertight material.
[0023]
In addition, since a decompression space is formed between the rising part and the lower end of the upper outer wall panel, this weakens the force of wind and rainwater entering the decompression space from the side joint gap, thereby preventing intrusion into the building. It can be surely prevented.
[0024]
Moreover, workability can be improved by engaging and fixing the draining member without using a screw or the like for the mounting member. Furthermore, by fixing the mounting member using the suspension bolts and fastening nuts for hanging the lower outer wall panel, a member for fixing the mounting member is not required and the number of parts is reduced. be able to.
[Brief description of the drawings]
FIG. 1 is a longitudinal sectional view of a horizontal joint structure in a horizontal joint gap between upper and lower outer wall panels according to an embodiment of the present invention.
FIG. 2 is a perspective view of an attachment member fixed using a suspension bolt.
FIG. 3 is a perspective view of an attachment member fixed by screws.
FIG. 4 is a perspective view for explaining a mounting operation of a draining member.
FIG. 5 is a perspective view showing a built-in state of the outer wall panel.
[Explanation of symbols]
(1) Exterior wall panel
(6) Lower frame
(11) Beam
(16) Hanging bolt
(21) Horizontal joint gap
(30) Mounting member
(31) Draining member
(42) Waterproof material
(52) Rise piece
(56) Water return piece
(57) Depressurized space
(58) Projection

Claims (3)

A draining member which is provided in a horizontal joint gap generated between the upper and lower outer wall panels constituting the curtain wall and rises from the upper end outside of the lower outer wall panel through the horizontal joint gap to the lower end inside of the upper outer wall panel Is engaged with and fixed to an attachment member attached to the upper end of the lower outer wall panel, and is attached along the lateral direction to the lower outer wall panel. A curtain wall structure having a water return portion for preventing
A long cut hole is formed in the mounting member, and the mounting member is inserted from the side into a hanging bolt for hanging and fixing the lower outer wall panel to the beam. A horizontal joint structure in a curtain wall, wherein a lower bolt is inserted and a fastening nut is tightened in this state to fix the attachment member to an upper end of the lower outer wall panel. A projecting piece projecting inward from the lower frame in the upper outer wall panel is formed, and the space below the rising portion on the upper side of the projecting piece has a momentum such as wind and rainwater entering from the lateral joint gap. The horizontal joint structure in the curtain wall according to claim 1, which is a reduced pressure space for weakening. The horizontal joint structure in the curtain wall according to claim 2, wherein the water return portion and the projecting piece are arranged vertically so as to overlap in the inner and outer directions.

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