JPH11280167A - Construction of joint portion - Google Patents

Abstract

PROBLEM TO BE SOLVED: To definitely cut off water at a discontinuous part of a waterproof sheet located at the rear surface side of an exterior finish material by bonding under pressure an end portion of the waterproof sheet laid at the rear side of both exterior finish materials to the backing along waterproof sheet respectively by dry type joint members fitted to a joint portion opened between exterior finishes. SOLUTION: An exterior finish material 1 is laid through an interior finish material consisting of gypsum board at the interior side of a backing frame 4 arranged to a rectangular shape and an exterior finish material 1 through an air vent backing materiel 5 forming an air vent layer 6 at the exterior finish side. Also, an air vent and waterproof sheet 3 is laid along the backing frame 4 between exterior finish side of the backing frame 4 and air vent backing material 5 and an end portion of the air vent waterproof sheet 3 is turned and inserted to the inside of a stepped portion 7 provided in one of the backing frame 4. And a dry joint member 2a is fitted to a joint portion opened between exterior finish members 1, and the end portion of the waterproof sheet 3 laid at the rear surface side of both the exterior members 1, 1 is bonded under pressure to the backing along the waterproof sheet 3. Next, a dry joint member 2b is fitted to the joint portion in such a manner that its tip comes into contact with the dry joint member 2a.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a joint structure which is opened between exterior materials of a building outer wall, and is provided on a back surface of the exterior material by a dry joint material fitted to the joint. And joint structures for ensuring watertightness by pressing the ends of the joints.

[0002]

2. Description of the Related Art Conventionally, as a wall structure, a ventilation layer 103 is sometimes formed on the back side of an exterior material 101. The ventilation layer 103 is intended to promote ventilation in the wall through the ventilation layer 103 and prevent dew condensation in the wall. When the gas permeable layer 103 is provided, a gas permeable waterproof sheet 105 is provided between the gas permeable layer 103 on the back surface side of the exterior material 101 and the base material 104 of the wall in case water leaks into the wall through the gas permeable layer 103. Is normal. The ventilated waterproof sheet 105 is provided for each outer wall panel, and a discontinuous portion of the waterproof sheet 105 is located between the outer wall panels. It only matched the outer wall panels.

[0003]

SUMMARY OF THE INVENTION An object of the present invention is to provide a joint between openings, which can reliably stop water at discontinuous portions of a waterproof sheet located on the back side of the exterior. Is to provide a structure.

[0004]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, according to the present invention, a dry joint material is fitted to an joint portion opened between the exterior materials, and the dry joint material is disposed on the back side of both exterior materials. The ends of the waterproof sheets to be pressed are pressed against the bases along which the respective waterproof sheets follow. According to this configuration, the end portions of the waterproof sheet can be hermetically sealed by the dry joint material, and water leakage from discontinuous portions of the waterproof sheet can be reliably prevented.

On the other hand, a first dry joint material and a second dry joint material are sequentially fitted in the joint portion opened between the exterior materials in the depth direction, and the first dry joint material is applied to the back surface of the exterior material by the first dry joint material. Press the end of the installed waterproof sheet against the substrate along which the waterproof sheet is placed,
It is also preferable to provide the second dry joint material with a surface portion located on the outer wall surface side. According to this configuration, the first dry joint material can securely provide a seal between the ends of the waterproof sheet, and the second joint material can have the function of the primary watertight material and the function of finishing the joint portion. In addition, it is easy to maintain the aesthetic appearance of the joint while improving the watertightness of the joint, and the use of a dry joint material eliminates the need for curing time and the like, and improves workability.

[0006] The first dry joint may be provided with a concave portion opened to the rear, and the tip of the second dry joint may be fitted into the concave portion. According to this configuration, since the second dry joint is fitted into the recess in the first dry joint, the second joint can be strongly pressed against the ground, and the first dry joint and the first dry joint can be joined together. Since the two dry jointing materials are integrated, they can be prevented from falling off.

Further, it is preferable that at least one end of the base along which the waterproof sheet is formed has a step, and a dry joint material is fitted to the step to press the waterproof sheet against the frame material. According to this configuration, since the dry joint is fitted to the step, if the dry joint is fitted until it comes into contact with the step, the dry joint can be securely installed, and the dry joint is deeply fitted. It is not too much, and the construction is easy and reliable.

[0008]

Embodiments of the present invention will be described below with reference to the drawings. In the first embodiment, the exterior material 1
The dry joint material 2 is fitted into the joint portion opening between the ends, and the end of the waterproof sheet 3 disposed on the back side of the exterior materials 1 and 1 is attached to the base 4 along which the waterproof sheet 3 extends by the dry joint material 2. Press.

On the outer wall, an interior base material made of gypsum board is provided on the interior side of the base frame 4 formed in a rectangular shape, and the exterior material 1 is provided on the exterior side via a ventilation base material 5 forming a ventilation layer 6. It is constituted by the outer wall panel. The outer wall panels are usually manufactured in a predetermined module, and each outer wall panel has a lower end fixed to a base or a trunk, and an upper end is fixed to a second floor floor beam or a roof beam. After the outer surfaces of the base frame 4 are brought into contact with each other between the adjacent outer wall panels, the outer walls are connected to each other by driving a diagonal nail from the interior side.

[0010] A breathable waterproof sheet 3 is provided between the exterior side of the base frame 4 and the ventilation base material 5, which has air permeability but does not allow water to permeate. The air-permeable waterproof sheet 3 is provided along the base frame 4, and its end is wrapped around the side surface of the base frame 4. A step 7 is provided on one base frame 4 of the outer wall panel, and the end of the ventilated waterproof sheet 3 is wrapped around the step 7 on the side where the step 7 is provided. Since the ventilated waterproof sheet 3 is provided for each outer wall panel, a discontinuous portion occurs at the joint of the outer wall panels in the ventilated waterproof sheet 3 after construction.

A first dry joint 2a is fitted to the step 7, and a second dry joint 2b is fitted to the surface thereof. A dry joint material is a fixed joint material formed of synthetic resin, rubber, or the like, and is a material which is fitted only to a joint portion and is completed in principle. The first dry joint material 2a of the present embodiment has a substantially T-shaped cross section and includes a lid 21 and legs 22 provided on the back surface of the lid 21. The left and right side surfaces of the legs 22 are elastic. A plurality of fins 23 are provided. The elastic fins 23 are provided at the tip of the leg 22 and near the center, respectively, and the elastic fin 23 near the center is formed wider. Although the end of the ventilation waterproof sheet 3 is wrapped around the step portion 7 as described above, the first dry joint material 2a is fitted, and the elastic fin 23 strongly presses them. 3 is pressed against the base frame 4 so that the watertightness of the discontinuous portion of the ventilation waterproof sheet 3 can be ensured. Further, since the end of the lid 21 is also in contact with the surface of the base frame 4 on the exterior side, the watertightness can be improved also by this.

The shape of the second dry joint 2b is substantially the same as that of the first dry joint 2a, except that the lid 21 has the narrowest width and the elastic fins 23 near the center in order. The width increases in the order of the elastic fins 23 at the tip. The lid 21 of the second dry joint material 2b has a dish-shaped cross section, and its center is slightly concave. As a result, when the dry joint material is fitted, the shape of the lid 21 is substantially U-shaped in cross section, so that the lid 21 is not easily dropped. The second dry joint material 2b functions as a primary joint material by preventing water leakage between the exterior materials 1 and 1.

Rear end of first dry joint material 2a (lid 21)
And the tip of the leg 22 of the second dry joint base material 2b is in contact with the second dry joint base member 2b, so that the first dry joint base member 2a can be prevented from falling off. The joint material 2a serves as a stop for the second dry joint material 2b, and the second dry joint material 2b is easily installed.

Next, a second embodiment will be described.
Only matters different from the first embodiment will be described. The configuration of the outer wall panel is the same as that of the first embodiment. In the present embodiment, the first dry joint material 2a is formed to have a substantially U-shaped cross section, and a concave portion 24 opened rearward is formed. The second dry joint base material 2b is formed such that the leg portion 22 is formed relatively long and reaches from the vicinity of the outer wall surface to the inside of the step portion 7 of the base frame 4. The leg 22 is provided with an elastic fin 23 so as to be located near the back surface of the end of the exterior material 1 after construction, and the elastic fin 23 is also provided near the tip. First, the first dry joint 2a is fitted, and the end of the ventilation waterproof sheet 3 is pressed against the base frame 4 with the first dry joint 2a as in the above embodiment. Next, the tip of the second dry joint 2b is fitted into the recess 24 of the first dry joint 2a. The first dry joint material 2a is more strongly pressed against the base frame 4 by fitting the second dry joint material 2b, and the ventilation waterproof sheet 3
The watertightness of the end portion of is improved. In addition, the first dry joint base material 2
Since both a and the second dry joint material 2b are integrated, the dry joint material is less likely to fall off and the attachment is reliable.

In the first and second embodiments, the step 7 is formed on the base frame 4 and the first dry joint 2a is fitted therein. A gap may be formed between the base frames 4 of the panel, and the first dry joint material 2a may be fitted therein.

A third embodiment will be described. In the third embodiment, the ventilation base material 5 provided on the exterior side of the base frame 4 is attached slightly apart from the end of the base frame 4, and the ventilation base material 5 is provided on the exterior side end of the base frame 4. Absent.

In the first dry joint material 2a, the tip of the leg 22 is bifurcated, and a lip 25 extending outward is formed at the tip. Further, the central portion of the first dry joint material 2a is provided with a substrate 27 in a direction crossing the dry joint material.
At the end thereof, the leg portion 22 is formed on the front side, and a concave portion 24 is formed on the end side of which the locking portion 26 folded back is formed at the end portion. The second dry joint material 2b is the same as that of the first embodiment, but the tip is fitted in the concave portion 24 of the first dry joint material 2a. Since the elastic fins 23 are formed at the end of the second dry joint material 2b, the elastic fins 23 are engaged with the locking portions 26 of the concave portions 24 and are prevented from falling off.

The tip of the leg 22 of the first dry joint material 2a is in contact with the outer side end of the base frame 4. The end of the ventilation waterproof sheet 3 located on the surface side of the base frame 4 is located at the outer side end of the foundation frame 4, and the tip of the leg 22 of the first dry joint material 2 a forms the ventilation waterproof sheet 3. Since it is in pressure contact with the material, it is possible to prevent water from leaking into the gap between the ventilation waterproof sheets 3. Further, the first dry joint material 2a is the second dry joint material 2a.
As a result, the tip of the leg 22 is strongly pressed against the base frame 4, and the watertightness can be improved. In the present embodiment, since it is not necessary to form the stepped portion 7 as in the above-described embodiment, the number of steps can be reduced.
Since there is no longer any distinction between the left and right panels, the variety of panels can be reduced. In addition, the concave portion 2 of the first dry joint material 2a
The outside of 4 is in contact with the end face of the exterior material 1 so that the first dry joint material 2a is hard to fall off and is positioned. Further, the tip of the leg portion 22 is located at the corner formed by the ventilation base material 5 and the base frame 4, and the first dry joint material 2a is positioned.

Next, a fourth embodiment will be described. In the present embodiment, the joint structure is located between the column cover 9 provided on the exterior side of the column 11 and the exterior materials 1 and 1 of the outer wall panel. The configuration of the outer wall panel is the same as in the above embodiment. As shown in FIG. 4, the pillar cover 9 includes an exterior material 1 located on the surface of the pillar cover 9, a substrate 81 provided on the back surface of the exterior material 1 along the back surface, and an interior from an end of the substrate 81. The mounting plate 8 includes a leg piece 82 bent to the side and a leg portion 22 bent further outward. Mounting plate 8
Leg portion 83 abuts on base plate 10 located on the interior side. The base plate 10 is fitted into the gap between the base frame 4 and the pillar 11 of the adjacent outer wall panel, the tip of the base plate 10 abuts on the mounting base 12 having a wedge-shaped body, and is nailed and fixed to the mounting base 12. The mounting base 12 is long and is provided from the upper end to the lower end of the pillar 11.

The air-permeable waterproof sheet 3 is provided on the surface of the base plate 10, and the air-permeable waterproof sheet 3 is also provided on the surface of the base frame 4 of the adjacent outer wall panel as in the above-described embodiment.
The first dry joint 2a is fitted between the side surface of the base frame 4 of the adjacent outer wall panel and the end surface of the base plate 10 located on the exterior side of the pillar 11. As a result, the air-permeable waterproof sheet 3 is pressed against the base frame 4 and the base plate 10 to maintain water tightness. The first dry joint material 2a has an elastic fin 23 formed only on one side surface.

The construction procedure of the joint structure according to the present embodiment will be described. First, the outer wall panel is erected, and then the mounting base 12 is attached to the adjacent base frame 4
Driving between one side and mounting. Next, the base plate 10 is brought into contact with the mounting base 12 and fixed by nailing the end. The air-permeable waterproof sheet 3 is provided on the base plate 10 in advance, and the air-permeable waterproof sheet 3 is also provided on the base frame 4 of the outer wall panel. Next, the first dry joint base material 2a is fitted and installed in the gap between the base plate 10 and the adjacent base frame 4, and then the column cover 9 is fixed by nailing the leg portion 83 to the end of the base plate 10. I do. Finally, the exterior material 1 of the pillar cover 9 and
A second dry joint material 2b is fitted and attached between the exterior materials 1 and 1 of the outer wall panel.

In the present specification, the base includes all of the base frame 4, the base plate 10, and the like. In the above embodiment, a pair of dry joint materials is used. However, one dry joint material may have both the function of pressing the end of the ventilation waterproof sheet 3 and the function of stopping water on the surface.

[0023]

The present invention is as described above. According to the first aspect of the present invention, the ends of the waterproof sheet can be hermetically sealed by the dry joint material, and water leakage from the discontinuous portion of the waterproof sheet can be prevented. It can be reliably prevented.

According to the second aspect of the present invention, the first dry jointing material reliably seals between the waterproof sheet ends,
Since the second joint material can have the function of the primary watertight material and the function of finishing the joint part, it is easy to maintain the beautiful appearance of the appearance while improving the watertightness of the joint part,
Since dry jointing material is used, curing time and the like are unnecessary, and workability is improved.

Further, according to the third aspect of the present invention, since the second dry joint material is fitted into the recess in the first dry joint material, the second joint material can be strongly pressed against the ground. Since the first dry joint material and the second dry joint material are integrated, they can be prevented from falling off.

According to the fourth aspect of the present invention, since the dry joint is fitted to the step, the dry joint can be reliably installed if the dry joint is fitted until the dry joint abuts on the step. The dry joint material is not fitted too deeply, so that the construction is easy and reliable construction is possible.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view showing a first embodiment of the present invention.

FIG. 2 is a sectional view showing a second embodiment of the present invention.

FIG. 3 is a sectional view showing a third embodiment of the present invention.

FIG. 4 is a sectional view showing a fourth embodiment of the present invention.

FIG. 5 is a cross-sectional view showing the structure of a conventional joint.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Exterior material 2 Dry joint material 24 Concave part 3 Waterproof sheet 4 Base (base frame) 7 steps

 ────────────────────────────────────────────────── ─── Continued on the front page (72) Inventor Masao Kajiwara 1-4-1 Shinsenri Nishimachi, Toyonaka-shi, Osaka National Housing Industry Co., Ltd.

Claims (4)

[Claims] 1. A dry joint material is fitted to an joint portion opened between exterior materials, and the dry joint material is provided on the end of a waterproof sheet disposed on the back side of both exterior materials, on a base along which each waterproof sheet extends. Joint structure characterized by being pressed against 2. A joint comprising a first dry joint and a second dry joint which are sequentially fitted in a depth direction to joints opened between the exterior materials, wherein the first dry joint is a back surface of the exterior material. The end portion of the waterproof sheet disposed on the side is pressed against the ground along which the waterproof sheet extends, and the second dry joint material has a surface portion located on the outer wall surface side. Construction. 3. The joint according to claim 2, wherein the first dry joint has a concave portion opened rearward, and a tip of the second dry joint is fitted into the concave. Structure. 4. A step is formed on at least one end of the base along which the waterproof sheet extends, and a dry joint material is fitted to the step to press the waterproof sheet against the frame material. The joint structure according to claim 1, 2 or 3, wherein: