JP2002146928A - Cut-off structure of vetical joint between external wall panels - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent a cut-off structure from molding resulted from rainwater stagnated between cut-off lips or leaking of rain flowing down to the downstairs through the inside cut-off lip in the cut-off structure having a preformed sealing material loaded into a vertical joint between external wall panels constituting a building unit of a unit building and provided with the cut-off lips elastically contacted to the side end faces of the external wall panels forward, backward and sideways. SOLUTION: A drain piece 21 is loaded between frames 3 of the building unit 1. The drain piece 21 is so formed that the lower side is bent outward to horizontally project a receiving section 23 having an inverted L-shaped section 23 coming into contact with the front of the frame to the bent end, and the receiving section 23 has a continuous foam sponge 24 on the upper surface to contact to the lower end faces of the external wall panels. Water stagnated between the cut-off lips and water flowing down through the inside lip 22a is received by the receiving section 23 to discharge from the open-cell sponge 24.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a waterproof structure at a vertical joint of an outer wall of a building, and more particularly to an intersection A, B between an upper floor vertical joint a and a lower house of a building outer wall as shown in FIG. It relates to a water-stop structure of such a vertical underground end.

[0002]

2. Description of the Related Art FIG. 2 shows a waterproof structure of joints 2 formed between building units 1 of a unit building or between outer walls 5 of the building units 1 and between frames 3. The building unit 1 is made of a rectangular steel pipe. A plurality of studs are attached by bridging a beam (not shown) made of channel steel between the upper and lower ends of the frame 3 to be formed, and an inner wall panel (not shown) is further inside,
An outer wall panel 5 is attached to the outside via a waterproof sheet 4.

[0003] The waterproofing structure of the joint 2 is composed of an elastic secondary waterproofing material 6 made of rubber or resin, which is mounted between the frames 3.
And an elastic vertical joint type sealing material 8 also made of rubber or resin and provided with waterproof lips 7 on the front, rear, left and right sides.

FIGS. 3 and 4 show vertical joints a of the upper floor shown in FIG.
3 shows a water-stop structure at intersections A and B between the roof and the shed. The lower part (not shown) is attached to the beam member 11, and the lower part (not shown) is bent to the left in FIG. An irregular sealing material 13 is packed between the sheet metal 12 to be formed and the outer wall panel 5.

[0005]

When packing the sealing material, the filling may be insufficient for some operators. If the sealing material is insufficiently filled at the lower end of the fixed-shaped sealing material and a gap is formed at the lower end of the fixed-shaped sealing material, rainwater blows in from this and enters the inside. The water is stopped by the waterproof material, but it flows down and reaches the ceiling below the floor. In the drawing, “b” indicates a drop of rainwater flowing down.

[0006] Rainwater intrusion may occur more than between the side wall of the outer wall panel material. That is, since the side end surface of the outer wall panel material is usually uneven, even if the waterproof lip of the fixed seal material is in elastic contact with the panel material side end surface, there may be places or gaps with poor adhesion, which may cause rainwater. May enter by blowing. The infiltrated rainwater is normally stopped by the inner water stop lip 7, and between the water stop lips 7 (FIG. 2).
(C)), a part of the water enters the inside through the inner water-stop lip 7, and eventually reaches the ceiling as described above.

[0007] Water accumulated between the water stopping lips of the standard sealing material also causes mold, which tends to impair the sealing effect of the standard sealing material or cause mold to appear on the surface and impair the appearance. Also, if the waterproof function of the side end face of the outer wall panel material is impaired due to aging, water will penetrate into the outer wall panel material, causing mold and freezing in winter, causing cracks on the outer wall panel. Is predicted.

[0008] It is an object of the present invention to solve the above-mentioned problems and to provide a water-stop structure capable of preventing rain leakage due to rainwater penetrating through a fixed-shaped sealing material.

[0009]

According to a first aspect of the present invention, there is provided a water stopping structure having a fixed sealing material which is mounted on a vertical joint between outer wall panels and has water stopping lips elastically contacting an end face of the outer wall panel on front, rear, left and right sides. A drainage piece which is attached to the inside of the fixed-shaped sealing material at an appropriate distance from the sealing material and which is bent outward to extend to the lower end of the fixed-shaped sealing material is provided. A gap preventing member is provided between the lower end of the sealing member and the sealing member.

According to the present invention, the rainwater that has entered the inside of the fixed sealing material is received by the bent portion below the drainage piece,
The water discharged between the gap preventing material and the lower end of the fixed-grain fixed type sealing material is discharged to the outside, and the water collected between the water stopping lips of the fixed sealing material is similarly discharged to the outside through the gap between the gap preventing material and the lower end of the fixed grit fixed sealing material. Is discharged.

The drainage piece of the present invention may be provided separately from the secondary water blocking material inside the secondary water blocking material 6 shown in FIG. 2 or formed to have the same length as the secondary water blocking material. May be provided instead of the secondary water blocking material.

In the former case, since the water blocking structure at the longitudinal underground end is composed of a fixed sealing material, a secondary water blocking material, and a drainage piece, the watertightness is improved, and the water blocking is more reliably performed. On the other hand, in the latter case, the structure is simplified because the drainage piece also serves as the secondary water blocking material.

The gap preventing material of the present invention may be sponge rubber inserted between the lower end of the standard sealing material and the bent end below the drainage piece. An open-cell sponge inserted between the lower bent end is used. By adhering the open-cell sponge to the lower end of the standard sealing material and the bent end of the drainage piece, it is possible to prevent rainwater from invading from between the lower end of the standard sealing material and the bent end of the drainage piece below. It is.

Accordingly, the invention according to claim 2 is characterized in that, in the invention according to claim 1, the gap preventing member is an open-cell sponge. This open-cell sponge may be attached to the lower end of the fixed-shaped sealing material or may be attached to the bent end. May be inserted into the gap between the drain piece and the bent end of the drainage piece.

The invention according to claim 3 is the invention according to claim 1 or 2
In the invention according to the invention, the drainage piece is provided with a receiving portion extending laterally to the bent end for a predetermined length and reaching below the outer wall panel. According to the present invention, the water flowing between the outer wall panel side end surface and the water stop lip of the fixed sealing material is stopped by the receiving portion, and drained through the gap preventing member and the lower end of the vertical joint fixed sealing material.

According to a fourth aspect of the present invention, in the invention according to the third aspect, the outer wall panel is attached to the outside of the frame constituting the building unit, the drainage piece is attached to the joint between the frames, and the receiving portion is provided. It is applied to a frame or frame and extends laterally below the outer wall panel.
According to the present invention, it is possible to prevent rainwater that has entered the inside of the fixed-shaped sealing material from flowing down from the frame side.

According to a fifth aspect of the present invention, in the invention according to the fourth aspect, the receiving portion is formed to have an L-shaped cross section with a hanging portion hanging downward, and the hanging portion contacts the frame,
A rigid body having an inverted L-shape, preferably a metal plate, is attached to at least the lower surface of the receiving portion, preferably the lower surface and the side surface of the receiving portion, inside the receiving portion.

According to the present invention, since the receiving portion has rigidity, it can be kept pressed against the frame or the waterproof sheet, and the sealing performance can be further improved.

[0019]

FIG. 5 shows an example of a drainage piece.
This drainage piece 21 is made of rubber or resin and has elasticity,
A water stop lip 22a is provided at the front, rear, left and right of the rising portion 22, and a lip 22b is provided to prevent the drain piece from being tilted or twisted when the drain piece is loaded, and the lower portion is bent outward and bent. A receiving portion 23 having an inverted L-shaped cross section is formed at an end so as to extend a predetermined length laterally. Drainage piece 2 shown
1 is provided in the portion A of FIG. 1 so that the receiving portion 23 is horizontal. However, when the receiving portion 23 is provided in the portion B, the drainage piece 21 is formed at the same angle as the slope of the roof 9 of the shed. It is formed inclining with respect to.

The receiving portion 23 has an open-cell sponge 24 as a gap preventing material attached to the upper surface, a metal plate 25 having an L-shaped cross section attached inside, and a lip 2 on the outside of the hanging portion 23a.
3b is provided to project sideways up and down. In the drawing, reference numeral 26 denotes a U-shaped groove formed in the hanging portion 23a, through which the receiving portion 23 is fixed to the frame 3 by a set screw (not shown).

When constructing the portion A in FIG. 1, the drainage piece 21 is first loaded into the joint 2 between the frames 3 as shown in FIG.
3 is pressed against the lower end surface of the outer wall panel 5 via the open-cell foam sponge 24. The lower surface 3 is pressed against the lower surface of the frame.
3 is fixed.

Next, as shown in FIG. 6 and FIG. 7, the secondary waterproof material 6 is loaded into the joint between the frames, and then the fixed sealing material 8 is loaded into the joint 2 between the outer wall panels. Under the receiving part, the beam 11 is attached via a sheet metal 27 which is put on the roof 9 of the shed, and these constructions may be performed before the construction of the secondary waterproofing material 6 or the fixed sealing material 8, It may be done later.

After the above construction is completed, the sealing material 13 is loaded into the gap between the lower end of the outer wall panel on the extension of the receiving portion 23 and the sheet metal 27. The water-stop structure of the present embodiment is configured as described above, and the rainwater that has entered between the water-stop lips 7 of the fixed-shaped sealing material 8 continues to fall down and is connected to the open-cell sponge 24 and the lower end of the vertical-sealed ground-type sealing material 8. Is discharged from outside
In addition, it passes through the inner water stop lip 7 and passes through the fixed sealing material 8.
Similarly, the water that has entered the inside of the container is also transmitted down, reaches the receiving portion 23, and is discharged to the outside through the space between the open-cell sponge 24 and the lower end of the longitudinal joint type sealing material 8.

[0024]

According to the first aspect of the present invention, the rainwater that has entered between the water stopping lips of the fixed sealing material is discharged to the outside through the discharging means, passes through the inside water stopping lip, and enters the inside of the fixed sealing material. Even in such a case, after the water flows down and is stopped at the bent portion of the drainage piece, the water is discharged through the space between the gap preventing material and the lower end of the vertical joint type fixed sealing material 8, thereby preventing rain from leaking downstairs. Can be prevented,
In addition, since water does not accumulate between the water stop lip, mold is prevented from occurring, preventing the appearance of mold from being damaged by mold and preventing water from penetrating into the outer wall panel material However, it is possible to prevent the occurrence of cracks and mold on the outer wall panel material due to the freezing.

When the open-cell sponge is used as the gap preventing member as in the invention according to claim 2, it is possible to prevent rainwater from entering from outside without impairing the drainage function. In the invention according to the third aspect, the water flowing down between the water stop lips is received by the receiving portion, discharged, and can be prevented from flowing downward.

In the invention according to the fourth aspect, the receiving portion is applied to the frame, so that water that has entered the inside of the fixed-shaped sealing material can be prevented from running down the frame or the waterproof sheet.

In the invention according to claim 5, since the receiving portion pressed against the frame or the waterproof sheet has rigidity, the sealing performance can be reliably maintained.

[Brief description of the drawings]

FIG. 1 is a schematic diagram of a unit building having a shed.

FIG. 2 is a cross-sectional view showing a water stop structure of a vertical joint.

FIG. 3 is an enlarged perspective view of a portion A shown in FIG.

FIG. 4 is a longitudinal sectional view of a portion A shown in FIG.

FIG. 5 is a perspective view of a drainage piece attached to a vertical joint of a frame.

FIG. 6 is a cross-sectional view of a water stop structure according to the present invention.

FIG. 7 is a vertical cross-sectional view showing a water blocking structure at a vertical underground end.

[Explanation of symbols]

 1. Building unit 2. Joint 3. Frame 4. Waterproof sheet 5. Outer wall panel 6. Secondary waterstop 7. Waterproof lip 8. Standard sealing material 9. Roof 11.・ Beam material 12, 27 ・ ・ Sheet metal 13 ・ ・ Sealing material 21 ・ ・ Drainage piece 22 ・ ・ Rising part 22a ・ ・ Water stop lip 22b 、 23b ・ ・ Rip 23 ・ ・ Receiving part 23a ・ ・ Hanging part 24 ・ ・Foam sponge 25 ・ ・ Metal plate 26 ・ ・ U groove

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 2E001 DA01 DA02 DH12 DH35 FA04 FA52 GA53 GA60 GA67 GA72 HB01 HD11 HE01 HE02 LA01 LA03 LA09 MA02 MA04

Claims (5)

[Claims] 1. A watertight structure having a fixed sealing material 8 mounted on longitudinal joints 2 between outer wall panels 5 and formed in front, rear, left and right, with water stopping lips 7 elastically contacting an end surface on the outer wall panel 5 side. The drainage piece 21 is attached inside the seal member 8 at an appropriate interval, and the lower part is bent outward to extend to the lower end of the standard sealant 8.
A gap preventing member 24 between the bent end of the first member and the lower end of the fixed-shaped sealing material.
A watertight structure for vertical joints between outer wall panels, characterized in that: 2. The waterproof structure for vertical joints between outer wall panels according to claim 1, wherein the gap preventing member is a continuous foam sponge. 3. The outer wall panel according to claim 1, wherein the drainage piece is provided with a receiving portion extending laterally at a bent end for a predetermined length to reach a lower portion of the outer wall panel. Waterproof structure of vertical joint. 4. An outer wall panel 5 is attached to an outer side of a frame 3 constituting the building unit 1, a drainage piece 21 is mounted on a joint 2 between the frames 3, and a receiving portion 23 is applied to the frame 3, and The watertight structure for vertical joints between outer wall panels according to claim 3, wherein the structure extends laterally below the panel 5. 5. A hanging part 23 in which a receiving part 23 hangs downward.
a, the hanging portion 23a is in contact with the frame 3 and a rigid body 25 having an inverted L shape is provided at least on the lower surface of the receiving portion inside the receiving portion 23. The waterproof structure for vertical joints between outer wall panels according to claim 4.