JPH0860756A - Gasket for outer wall panel and fitting/executing method thereof - Google Patents

Abstract

PURPOSE: To secure a good water stopping property by inserting a gasket into a joint section between outer wall panels, and molding the gasket with a mounting section and a pair of fin-like flexible pressing plates. CONSTITUTION: A joint section 22 constituted of a recess 21a and a gasket adherence face 21b is formed between end sections of exterior face materials 21 of outer wall panels 20 of building units 18A, 18B. A gasket 30 provided with a belt plate-like mounting section 32 and a pair of fin-like pressing plates 34 protruded at the center of the width direction of the mounting section 32 and brought into contact with the end section corners 21c of the exterior face materials 21 is inserted into the joint section 22. The gasket 30 can be located at the center of the joint section 22 regardless of the size of the joint width.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an outer wall panel gasket for waterproofing joints formed between outer wall panels of a building, and a method of mounting the same.

[0002]

2. Description of the Related Art When a plurality of outer wall panels are arranged side by side and attached to a portion which becomes an outer wall around a structure of a building, a gap called a joint is formed between the outer wall panel and an adjacent outer wall panel. If such a gap is left as it is, not only does the appearance look ugly, but rainwater also infiltrates through this gap, causing the interior to get wet, mold on the wall surface, and in the cold season. The invading rainwater freezes and expands in the wall, causing damage such as damage to the wall. So, from the past,
Various measures have been proposed to prevent water leakage in the joints of the outer wall, but the dry method of inserting a gasket into the joint gaps is to apply cement mortar or inject caulking agent (sealing agent). It is more widely used than the wet method of filling because it is easier to construct and does not have deterioration due to ultraviolet rays or cracks due to drying after construction.

As a gasket for waterproofing the joint portion of the outer wall in a dry manner, there are conventionally known gaskets of JP-A-3-233046, JP-A-3-275842 and JP-A-3-295.
Those described in Japanese Patent Publication No. 948 and the like are known.
FIG. 14 is a cross-sectional view showing a gasket mounting structure described in JP-A-3-275842. In the figure, reference numerals 1 and 1 denote two outer wall panels installed adjacent to each other, 2 denotes a joint between the outer wall panels 1 and 1, and 3 denotes a gasket inserted in the joint 2. The gasket 3 includes a long plate-shaped base portion 4 located in the joint portion 2,
A decorative plate 5 which is provided at one end of the base member 4 so as to intersect the base member 4 at a substantially right angle and covers the outside of the joint portion 2, and a tip provided at the other end of the base member 4 is elastically attached to the back surface of the outer wall panel 1. And a pressing portion 6 composed of left and right fin portions 6a, 6a to be brought into contact with. The gasket 3 includes the left and right fins 6a, 6a.
By elastically contacting the tip of the outer surface with the back surface of the outer wall panel 1, the outer wall panel 1 is held by the joint portion 2, and the joint portion 2 is hidden by the decorative plate 5.

To attach the gasket 3 to the joint portion 2, the pressing portion 6 or the decorative plate 5 is opposed to the joint portion 2 in a direction orthogonal to the outer wall panel 2, and in this state, the pressing portion 6 or the decorative portion is applied. While flexing the plate 5, the plate 5 is forcibly inserted into the joint portion 2, and the pressing portion 6 or the decorative plate 5 is elastically restored on the side opposite to the joint portion 2, so that the end portions of the outer wall panels 1 and 1 are made into the decorative plate 5. It is sandwiched between and the pressing portion 6. As a result, the gasket 30 is held in the joint portion 2, and the decorative plate 5 hides the joint portion 2.

FIG. 15 is a sectional view showing a gasket mounting structure described in Japanese Patent Laid-Open No. 3-295948. This gasket 13 is of a cylindrical tube type, and the gasket 13 is contracted by evacuation of the internal space 13a thereof, and in this state, the gasket 13 is inserted into the joint portion 12 between the outer wall panels 11 and, after the insertion, a vacuum is formed. The gasket 13 is elastically restored by stopping the pulling, and the outer wall panels 11, 11
The gasket 13 is closely attached to the end faces 11a, 11a opposed to each other to secure the waterproofness.

FIG. 16 is a sectional view showing a gasket mounting structure disclosed in Japanese Patent Laid-Open No. 3-23,046. This gasket 14 is of a deformed tube type, and the gasket 14 is contracted by evacuation of the internal space 14a, and in this state, inside the space portion 16a formed in the joint portion 16 between the outer wall panels 15 and 15. Gasket 14
After the insertion, the gasket 14 is elastically restored by stopping the vacuuming after the insertion, and the gasket 14 is adhered to the opposite end surfaces 15a, 15a of the outer wall panels 15, 15 to secure the waterproofness.

[0007]

By the way, JP-A-3-
The conventional gasket 3 described in Japanese Patent No. 275842 (see FIG.
In 4), since the insertion work is performed from the direction orthogonal to the outer wall panel 1, the worker must move from the upper end to the lower end of the joint portion while pushing the gasket 3, and the scaffolding It was necessary and troublesome, and I had to pay attention to safety. In addition, the base portion 4
Since the tip of the holding portion 6 provided on the other side end is configured to be held by coming into contact with the back surface of the outer wall panel 1, the gasket 3 is forced while the holding portion 6 or the decorative plate 5 is bent. The position of the gasket 3 may not be positioned at the center of the joint portion 2 when it is flexed and pushed in, and it may meander and become unsightly.

Further, the conventional gasket 13 (FIG. 15) disclosed in Japanese Patent Laid-Open No. 3-295948 is the outer wall panel 1
Since it is mounted in a state of being sandwiched between the end surfaces 11a of the Nos. 1 and 11a, there is a concern that the surface side of the joint portion 12 is likely to have irregularities, which spoils the aesthetics of the building. Further, since the water stop line is only the contact surface between the end faces 11a and 11a and the gasket 13, there is a concern that the water stop performance may deteriorate.
Furthermore, in the actual site, the joint width dimension varies considerably due to the outer diameter of each outer wall panel used and the construction error of the building frame, etc. If the width is too wide, the gasket 13 is loosely fitted and watertightness cannot be ensured, and there is a fear that the gasket 13 may separate from the joint portion 12.

Further, in the conventional gasket 14 (FIG. 16) described in JP-A-3-233046, the joint portion 16 is used.
Since the space portion 16a for mounting the gasket 14 therein is required, the manufacturing of the outer wall panel 15 becomes complicated, and in addition, it cannot be used for the outer wall panel composed of a thin exterior surface material such as hard wood cement plate. There was also an inconvenience.

The present invention has been made in view of the above-mentioned circumstances. The worker can carry out the mounting work without much movement, and can easily position the joint at the center of the joint.
A gasket for outer wall panels that can easily smooth the surface side of joints, improve the reliability of water stoppage, and flexibly cope with large and small joint widths and the thickness of outer wall panels (exterior surface materials) And the installation and construction method thereof.

[0011]

In order to solve the above problems, the invention according to claim 1 is a gasket for an outer wall panel which is inserted into a joint between an outer wall panel and an adjacent outer wall panel. , A strip-shaped mounting portion arranged on the front surface side of the outer wall panel and having a width to cover the joint portion, and the tip end projecting at the center in the width direction of the back surface of the mounting portion, and each tip is outward in the width direction of the joint portion. It is characterized by comprising a pair of fin-shaped flexible pressing plates that extend obliquely so as to spread and each outer surface abuts a corner of an end portion of the outer wall panel on the back surface side of the joint portion.

According to a second aspect of the invention, there is provided the outer wall panel gasket according to the first aspect, wherein each of the pressing plates is provided with a warp portion that projects outward and warps toward the mounting portion side. It is characterized in that an extension fin portion extending to the front mounting portion side is provided at the tip end via a hinge.

According to a third aspect of the present invention, there is provided an outer wall panel gasket mounting method according to the first or second aspect,
The pair of pressing plates that expand outward of the outer wall panel gasket are forcibly closed, and are fitted into the U-shaped grooves provided in the jig, and in this state, the outer wall panel is provided on the front surface side of the outer wall panel. The gasket for the outer wall panel and the jig are inserted from one end to the other end in the longitudinal direction of the joint, with the outer cover panel positioning portion positioned and the jig on the back surface side of the outer wall panel. , The pressing plate of the gasket for the outer wall panel is disengaged from the U-shaped groove of the jig, and the elastic restoration action of the pressing plate causes the outer surface of the obliquely extending pressing plate to move toward the end of the outer wall panel on the back surface side of the joint portion. The feature is that it abuts on the corner of the part.

The invention according to claim 4 is the gasket for outer wall panel according to claim 1 or 2, wherein a tube portion having a hollow portion is integrally formed inside the pair of pressing plates. Is characterized by.

The invention according to claim 5 is the gasket for an outer wall panel according to claim 4, characterized in that the peripheral wall of the tube portion is constituted by a strip plate connected via a hinge.

The invention according to claim 6 is a method for mounting a gasket for an outer wall panel according to claim 4 or 5,
A pair of pressing plates are closed by evacuating the inside of the hollow part of the gasket for outer wall panel to shrink the tube part, and in this state, the cover part is located on the surface side of the joint part,
Insert the outer wall panel gasket into the joint, and after inserting,
By stopping the evacuation of the hollow portion and introducing the outside air, the tube portion is restored to open the pair of pressing plates,
Thus, the outer surface of the obliquely extending pressing plate is brought into contact with the corner of the end portion of the outer wall panel on the back surface side of the joint portion.

[0017]

According to the first aspect of the present invention, the outer covering portion of the gasket covers the front surface side of the joint portion, and on the back surface side of the joint portion, the diagonally extending outer surface of the gasket pressing plate is the corner of the end portion of the outer wall panel. Elastically contact with the outer wall panel, and the outer wall panel is sandwiched between the mounting portion and the pressing plate, whereby the gasket is fixed. Moreover, in this case, even if the joint width is large or small, the pressing piece is elastically deformed and stably contacts the corner of the outer wall panel. Therefore, the gasket is positioned at the center of the joint portion regardless of the joint width.

According to the second aspect of the present invention, when the joint width is small, the pressing plate comes into contact with the corner of the outer wall panel at a position close to the front mounting portion in a state where the pressing plate is not opened so much. Therefore, in this case, the tip of the extended fin portion contacts the back surface of the outer wall panel, and water tightness with the outer wall panel is secured at this portion. Further, when the joint width is large, it contacts the corner of the outer wall panel at a position distant from the cover part with the pressing plate wide open. Therefore, in this case, the extended fin portion is in contact with the back surface of the outer wall panel in a state where the extended fin portion is bent at the hinge (thin wall) portion, and this portion secures waterproofness with the outer wall panel.

According to the third aspect of the invention, the gasket can be inserted from one end side in the longitudinal direction of the joint portion of the outer wall panel (for example, in the case of the vertical joint portion of the outer wall panel, the upper side of the building). Unlike the case of inserting the gasket from the front surface side or the back surface side of the panel into the joint, it is not necessary for the operator to sequentially move from one end side to the other end side of the outer wall panel while inserting the gasket.

In the invention according to claim 4, since the tube portion is integrally provided inside the pressing plate, when the inside of the hollow portion is decompressed and the tube portion is contracted, the pressing plate is closed and the decompression of the hollow portion is stopped. , Restoring and opening the holding plate. Therefore, the pressing plate can be inserted into the joint with the pressing plate closed, and after the insertion, the pressing plate can be opened and the pressing plate can be applied to the corner of the outer wall panel.

According to the fifth aspect of the invention, since the peripheral wall of the tube portion is constituted by the strip plate connected via the hinge, the bending of the hinge allows the tube portion to be easily collapsed.

Further, in the invention according to claim 6, by vacuuming the tube portion, the pressing plate of the gasket is closed,
After inserting the gasket in the joint in that state, the work can be completed simply by stopping the evacuation.

[0023]

Embodiments of the present invention will be described below with reference to the drawings. First Embodiment FIG. 1 is a cross-sectional view showing the structure of a gasket which is the first embodiment of the present invention, FIG. 2 is a cross-sectional view showing the structure of joints to which the gasket is attached, and FIG. It is sectional drawing which shows the state which mounted the same gasket in the joint part of a width dimension.

First, the target joint portion will be described first. In FIG. 2, 18A and 18B are building units that are horizontally adjacent to each other to form a building such as a house, and these building units 18A and 18B are
In the factory, a large beam (not shown) made of grooved steel is bridged between the upper and lower ends of the four corner pillars 19 made of square steel pipe in advance, and a plurality of small beams are inserted between the large beams to form a box-shaped body. After mounting a plurality of studs (studs) on the frame, a ceiling panel or a floor panel is attached to the beam, and an inner wall panel, a boundary wall panel, an outer wall panel 20 and the like are attached to the stud. Here, the steel columns 19 and the girders are galvanized to prevent rust. Each outer wall panel 20
Is composed of an exterior surface material 21, a vertical reinforcing bar 23 and a horizontal reinforcing bar (not shown) vertically and horizontally arranged on the back surface side of the external surface material 21, and the outer wall panel 20 of the building unit 18A and the building unit 18A. The outer wall panel 20 of 18B is adjacently installed so as to be located in substantially the same plane, and constitutes the outer wall portion of the building.

In this example, the exterior surface material 21 includes an ALC plate such as a hard wood chip cement plate having a thickness of 10 to 20 mm,
It is thinner than concrete slabs. The gasket of the present invention is suitable for the joint portion of the thin exterior facing material 21, although it may be thick, of course, so the thin exterior facing material 21 will be described as an example here. The reinforcing vertical rails 23 and the horizontal reinforcing rails are made of steel and are galvanized to prevent rust.

Between the ends of the exterior facing materials 21 and 21 constituting the outer wall panels 20 and 20 of both building units 18A and 18B, there is a joint portion 22 that extends straight in the vertical direction of the building.
On the end surface of each exterior surface member 21 constituting the joint portion 22,
The recess 21a is formed and a notch that forms the gasket contact surface 21b is formed. 21c indicates joint 2
2 is the back side corner. The outermost reinforcing vertical bar 23 is arranged at a position retracted inward from the end of the exterior surface material 21, and is aligned with the pillar 19 at that position, and an appropriate space is provided on the rear surface side of the end portion of the exterior surface material 21. 24 is open. Although not shown, a waterproof sheet such as urethane foam is interposed between the outermost reinforcing vertical bar 23 and the pillar 19.

Next, as shown in FIG. 1, the gasket 30 of this example is arranged on the front surface side of the exterior surface material 21 and is connected to the joint portion 2.
2 is a strip-shaped surface-mounting portion 32 having a width that covers the surface of 2, and the tip end of the surface-mounting portion 32 is provided so as to project in the center of the back surface of the surface-mounting portion 32 in the width direction and extends diagonally so as to spread outward in the width direction of the joint portion 22. Outer side 3
4a is provided with a pair of fin-shaped flexible pressing plates 34, 34 that come into contact with the corners 21c at the ends of the exterior surface material 21 on the back surface side of the joint portion 22.

Curved lips 33 are formed at both ends in the width direction of the cover 32 to improve the adhesion to the surfaces of the exterior facing materials 21 and 21. On the other hand, the pressing plate 3
In order to improve the adhesion to the back surfaces of the exterior surface materials 21 and 21, the tip end of 4 is provided with a warp portion 36 that protrudes outward and warps back to the mounting portion 32 side. Further, the pair of pressing plates 34, 34 are symmetrical with respect to the center line (plane) in the width direction of the mounting part 32, and the roots thereof are parallel to each other and integrated with the mounting part 32. A concave groove 38 is formed between the portions in order to improve the flexibility of the pressing plate 34.

Next, the material of the gasket 30 will be described. In this example, the main part of the gasket 30, that is, the pressing plates 34, 34 and the back surface side portion 32b of the mounting portion 32 elastically contact (elastically contact) the end portion of the exterior surface material 21 from the front surface side and the back surface side. Contact) to increase the waterproofness, E
PDM (ethylene-propylene-diene-terpolymer)
The rubber elastic body (hardness: 55 to 75 degrees) is used as a material. On the other hand, the surface of the surface mounting portion 32 is provided with the same makeup as the surface of the exterior surface material 21 in order to ensure the appearance continuity of the outer wall. It is made of a rubber elastic material such as CSM (chlorothrophonated polyethylene), which has excellent film adhesion. The gasket 30 has a common mouth portion of the EPDM extruder and the CSM extruder,
It is formed as a multi-layer integrally molded product.

In order to attach the gasket 30 to the joint portion 22, the worker needs to construct the building units 18A, 18 under construction.
Step right above the joint 22 of B and insert the lower end of the gasket 30 into the upper end of the joint 22. At this time, the pressing piece 34 that is opened outward in the natural state is brought into a closed state as shown in FIG. 2 by some means (for example, it may be picked by hand). Then, in this state, the joint 22 is inserted.
When the pressing plate 34 is inserted into the joint portion 22 in a closed state and the restraint of the pressing plate 34 is released, the mounting portion 32 of the gasket 30 is removed.
Covers the front surface side of the joint portion 22, and on the back surface side of the joint portion 22, the pressing plate 34 opens outward, and the inclined outer surface 34a forms the corners 21c, 21 of the end portions of the exterior facing materials 21, 21.
The outer surface members 21 and 21 are elastically contacted with c, and thereby the outer surface members 21 and 21 are sandwiched between the mounting portion 32 and the pressing plates 34 and 34, whereby the lower end portion of the gasket 30 is held at the upper end portion of the joint portion 22. After that, if the gasket 30 is dropped vertically into the joint portion 22, the gasket 30 will be attached to the mounting portion 32.
The exterior surface members 21, 21 are sandwiched between the pressing plates 34, 34 and the slide plates 34, 34 and are slid downward to be mounted.

There are several ways of inserting the gasket 30, and as shown in FIG. 3A, when the joint portion 22 has a small width, the opening angle of the pair of pressing plates 34, 34 remains small, Corners 21c, 21c on the back surface of the exterior facing materials 21, 21
At the portion near the roots of the pressing plates 34, 34, the outer surface 3
4a and 34a hit. Further, as shown in FIG. 3C, when the joint portion 22 has a wide width, the pair of pressing plates 3
The opening angle of 4, 34 becomes large, and the exterior surface materials 21, 21
The outer side surfaces 34a, 34a hit the corners 21c, 21c of the rear surface of the outer plate 34 at the portions near the tips of the pressing plates 34, 34 (at this time, the warp portion 36 also corners 21 of the rear surface of the exterior surface material 21).
It may hit c, 21c). Further, as shown in FIG. 3B, when the joint portion 22 has a medium width, the opening angle of the pair of pressing plates 34, 34 becomes medium, and the exterior surface material 2
At the corners 21c, 21c on the back surface of the 1, 21, the pressing plate 34,
The outer surfaces 34a, 34a abut at the intermediate portion of 34. In any case, the cover 32 and the pair of pressing plates 34, 34
Since the ends of the exterior facing materials 21, 21 are sandwiched by
Due to this elastic contact, the gasket 30 is connected to the joint portion 22.
And the mounting portion 32 is positioned at the center of the joint portion 22. This is because the pair of pressing plates 34 and 34 are formed symmetrically with respect to the center line (plane) in the width direction of the cover part 32, so that the state in which the cover part 32 is present at the center of the joint part 22 is mechanical. Because it is the most stable. Note that, under a constant joint width, the gasket 30 is inserted and attached in the mode shown in FIG. 3C when the exterior facing material 21 is thick, and when the exterior facing material is thin, the gasket 30 is inserted in the manner shown in FIG. ), And when the exterior surface material is in the middle position, it is mounted in the manner shown in FIG.

As described above, according to the configuration of this example, since the gasket 30 is held by the joint portion 22 in a state where the mounting portion 32 is positioned at the center of the joint portion 22, the gasket 30 is prevented from meandering. , Looks good. At this time, the surface mounting portion 32 of the gasket 30 and the exterior surface materials 21, 32
Contact the surface of the gasket 30, and press the pressing plates 34, 3 of the gasket 30.
4 and the back surfaces of the exterior surface materials 21, 21 are in contact with each other,
Two water shutoff lines are configured to improve reliability of water shutoff performance.

Further, the pressing plates 34, 34 which are open to the outside
Opens and closes according to the width of the joint portion 22 and the thickness of the outer wall panel (exterior surface material), so that the range in which the width of the joint portion 22 and the thickness of the outer wall panel (exterior surface material) can be increased is widened. Also,
Even if there is a slight misalignment in the front-rear direction (a method orthogonal to the surface of the outer wall panel) between the exterior surface materials 21, 21 on both sides of the joint portion 22, the surface-side mounting portion 32 of the gasket 30 and the back-side pressing plate. Since the end portion of the exterior surface material 21 can be sandwiched with 34, water can be surely stopped, and the curved lips 33, 33 at both ends of the surface mounting portion 32 absorb the deviation, so that the joint portion 22 Can be finished smoothly. If the depth of the notch provided on the end surface of the exterior surface material 21 is set to be about the same as the thickness of the mounting portion 32, the joint portion 22 is formed.
Can be made smoother.

The gasket 30 of this example can be applied not only to the joint portion 22 formed by arranging the exterior surface materials 21, 21 (outer wall panels 20, 20) in substantially the same plane, but also as shown in FIG. Two building units 18A, 1
8B exterior facing materials 21, 21 (outer wall panels 20, 20)
When the above are crossed with each other to form the entry corner, the invention can also be applied to the joint portion 22a generated in the entry corner.

On the side of the building unit 18B, a concave portion 21a is provided on the end surface of the exterior surface material 21, and a spacer 25 for forming a gasket contact surface 25a is fixed to the end surface by screws 26. . Then, the gasket contact surface 25c formed by the spacer 25
And the gasket contact surface 21b at the end of the exterior surface member 21 on the side of the building unit 18A are formed on the same plane, and the surface mounting portion 32 of the gasket 30 is adhered thereto. Other than that, it is substantially the same as that shown in FIG. 3, and therefore its explanation is omitted.

Second Embodiment Next, as a second embodiment, a gasket 30 is prepared by using a jig.
A method of mounting the will be described. As shown in FIG.
This jig 40 has a cross-sectional shape in which opposite U-shaped groove portions 42, 42 are integrally provided on both sides of a central U-shaped groove portion 41, and is an elongated body having the same length as the gasket 30. Is configured as. In addition, as a material of the jig 40,
A material that can maintain the above-mentioned cross-sectional shape, for example, a synthetic resin plate such as a hard vinyl chloride resin or a metal plate such as a vinyl chloride steel plate is suitable.

To mount the gasket 30 on the joint portion 22, first, as shown in FIG. 5, a pair of pressing plates 34, 34 of the gasket 30 are placed in the U-shaped groove portion 41 at the center of the jig 40.
Is forcibly closed and fitted. At that time, the cord 45 is placed in the space between the pair of pressing plates 34, 34 and the U-shaped groove portion 41.
The detachment block 46 is fixed to the tip of the string 45 by passing through. The detachment block 46 enters between the jig 40 and the gasket 30 by pulling the cord 45, and as it enters, the space is expanded by, for example, the action of the wedge-shaped portion at the tip thereof, and the gasket 30 is opened. U-shaped groove 41
To get rid of.

After the gasket 30 is fitted into the jig 45 in this way, as shown in FIG. 6, an operator rides on the joint portion 22 of the building unit 18A, 18B in the middle of construction,
The jig 40 and the gasket 30 are inserted together into the joint portion 22 from above. At that time, the surface mounting portion 32 of the gasket 30 is positioned on the surface side of the exterior surface material 21, and the exterior surface material 21
The jig 40 is positioned on the back surface side of the, the removal block 46 is positioned at the lower end, and the string 45 is pulled out from above and inserted. Jig 4
0 is inserted into the space 24 on the back surface side of the joint portion 22.

As shown in FIG. 7A, when the jig 40 and the bracket 30 are inserted into the joint portion 22, the string 45 is pulled up from above. Then, the separation block 46 is forcedly inserted between the gasket 30 and the jig 40, so that the gasket 30 is separated from the jig 40. And
Due to the elastic restoring action of the pair of pressing plates 34, 34, the pressing plates 34, 34 open outward as shown in FIG.
Outer side surfaces 34a, 34a of 4, 34 are the exterior surface materials 21,2.
Hit the corners 21c, 21c on the back side of 1 and put the gasket 30
Is set correctly. After that, the jig 40 may be removed, or may be left behind and used for another purpose.

When the jig 40 is used in this way, the gasket 30 can be easily inserted from above. Therefore, it is not necessary to provide a scaffold on the outer periphery of the building, and the work can be performed easily and safely.

Third Embodiment Next, a third embodiment of the present invention will be described. Figure 8
It is sectional drawing which shows the structure of the gasket 50 which is 3rd Example of this invention. In the gasket 50 of this example, a tube portion 51 having a hollow portion 55 is integrally formed inside the pair of pressing plates 34, 34. In this case, the tube portion 51 has a substantially rhombic cross section, two sides of which are constituted by the pressing plates 34, 34, and the remaining two sides are connected via hinges (thin portions) 52, 52, 53. It is composed of strips 51a, 51a. A polymer film (not shown) such as high-density polyethylene is heat-welded to the lower end surface of the tube portion 51 to close one end side of the hollow portion 55. In addition, each part other than the above,
Since it is the same as the corresponding units in FIG. 1, the same reference numerals are given and the description thereof is omitted.

In order to mount the gasket 50 of this example on the joint portion 22, an operator may
Ride directly above the joint portion 22 of the 18B, first, the tube portion 5
The inside of the hollow portion 55 is evacuated from the upper end of 1 with a vacuum pump or the like, and the inside of the hollow portion 55 is depressurized from the outside. Then, the tube portion 51 contracts and is bent by the hinges 52, 52, 53 of the rhombic tube portion 51, whereby the hollow portion 55 contracts and the tube portion 51 collapses. Then, the pair of pressing plates 34, 34 are closed. Therefore, in this state, as shown in FIG. 9, the mounting portion 32 is positioned on the surface side of the joint portion 22, and the gasket 50 is provided on the upper end portion of the joint portion 22.
The pressing plates 34, 34 at the lower end are inserted. Then, the gasket 50 is dropped vertically to the lower end of the joint portion 22. When the gasket 50 reaches the lower end of the joint portion 22, the evacuation of the hollow portion 55 is stopped. Then, the outside air is introduced, and the pressing plates 34, 34 and the band plates 51a, 51
The tube portion 51 is restored by the elasticity of a, the pair of pressing plates 34, 34 are opened, and the pressing plates 34, 34 extending obliquely are formed.
The outer side surfaces 34 a, 34 a of the outer surface surface of the joint portion 22 are brought into contact with the corners 21 c, 21 c of the end portions of the exterior surface material 21, 21. Also in this case, as shown in FIG. 10, the opening degree of the pressing plates 34, 34 is adjusted in accordance with the width of the joint portion 22 in exactly the same manner as shown in the above-described first embodiment (FIG. 3). Then, the gasket 50 is attached to the joint portion 22. Note that the lower end portion after vacuum suction may be left closed or opened again.

According to the insertion method by evacuation in this example, the operation of inserting the gasket can be simplified. In particular, since part of the peripheral wall of the tube portion 51 is constituted by the strip plates 51a and 51a connected by the hinges 52 and 53, the hinge 52,
By bending 53, the tube portion 51 is easily crushed, and the depressurizing operation for closing the pressing plates 34, 34 is facilitated. On the other hand, the restoring force of the tube portion 51 (hence, the pressing plates 34, 34) after vacuum suction also becomes large, and the outer side surfaces 34a, 34a of the pressing plates 34, 34 on the rear surface side of the joint portion 22, the exterior surface material 21, 21 corner 21
It can be strongly brought into contact with the c and 21c, and the waterproofness can be improved.

Fourth Embodiment FIG. 11 shows a gasket 60 according to a fourth embodiment of the present invention.
3 is a cross-sectional view showing the configuration of FIG. Gasket 60 of this example
However, the difference from the gasket 50 of the third embodiment is that the recessed groove 38 (see FIG. 8) between the base portions of the pressing plates 34, 34 is eliminated. By providing the tube portion 51,
Pressing plate 3 for the vacuum type gasket
The force for closing 4, 34 can be set large. Therefore, like the gasket 60 of this example, the pressing plate 3
Even if the concave groove 38 is not provided between the root portions of the pressure plates 34 and 34, the pressing plates 34 and 34 can be closed.

[Fifth Embodiment] FIG. 12 shows a gasket 70 according to a fifth embodiment of the present invention.
3 is a cross-sectional view showing the configuration of FIG. Like the gasket 70 of this example, an extension fin portion 57 that extends toward the surface mounting portion 32 side may be provided at the tip of the warp portion 36 via the hinge 57a. In this case, as shown in FIG.
When the width of 2 is small, the exterior surface materials 21, 2 are placed at a position close to the mounting portion 32 in a state where the pressing plates 34, 34 are not opened so much.
The corners 21c and 21c of 1 are contacted. Therefore, the tip of the extension fin portion 57 comes into contact with the back surface of the exterior facing material 21, and the waterproofness with the exterior facing materials 21 and 21 is secured at this portion. Further, as shown in FIG. 13C, when the joint portion 22 has a large width, the corners 21 of the exterior facing materials 21, 21 are located far from the cover portion 32 with the pressing plates 34, 34 being wide open.
Contact c, 21c. Therefore, in this case, the extended fin portions 57, 57 contact the back surfaces of the exterior facing materials 21, 21 in a state where the extension fins 57, 57 are bent at the hinges 57a, 57a (see FIG. 12), and at this portion, the exterior facing materials 21, 21 The waterproofness of is secured. In the case of the intermediate state, as shown in FIG. 13B, the state becomes an intermediate state between the state shown in FIG. 13A and the state shown in FIG. 13C. As described above, according to the gasket 70 of this example, the extended fin portion 5 that is always in contact with the back surface side of the exterior surface material 21.
Since No. 7 is provided, it is possible to secure a still better water cutoff regardless of the size of the joint portion 22.

Although the embodiment of the present invention has been described in detail above with reference to the drawings, the specific structure is not limited to this embodiment, and there are design changes and the like within a range not departing from the gist of the present invention. Also included in the present invention. For example, the reinforcing bar of the outer wall panel and the pillar of the building unit are not limited to the steel frame type, but may be a wood type. However, in the case of wood, it is desirable to apply painting and antiseptic treatment. The direction of inserting the gasket into the joint portion is not limited to from above, and may be from the front surface of the exterior surface material.
Further, the extension fin portion (see FIG. 12) may be provided in the embodiment (see FIG. 1) in which the vacuum is not drawn.

As a material of the gasket, instead of a rubber elastic body such as CSM, another kind of high hardness rubber or a metal plate may be used on the surface side portion of the mounting portion. Alternatively, a hard EPDM (for example, a hardness of 75 to 100) is applied to the surface side portion of the cover part.
On the other hand, the pressing plate and the back surface side portion of the mounting portion may be made of soft EPDM (for example, hardness 55 to 75 degrees). As a single layer molded product,
Of course, the whole may be made of a single rubber elastic body. Also,
An adhesive material such as butyl rubber tape may be attached in advance to the contact portion between the pressing plate 34 of the gasket and the exterior surface material. This makes it possible to further improve the waterproof property after attachment. it can.

[0048]

As described above, according to the structure of the invention described in claim 1, a pair of flexible pressing pieces are provided so as to extend obliquely outward on the back surface of the gasket.
Regardless of the joint width, the gasket can be positioned in the center of the joint, the meandering of the gasket can be prevented, and the appearance from the outside can be improved.
In particular, the holding plate that is open to the outside opens and closes according to the joint width and the thickness of the outer wall panel (exterior surface material), so the range that can accommodate large and small joint widths and the thickness of the outer wall panel (exterior surface material) expands. . In addition, even if there is a slight misalignment in the front-rear direction (direction orthogonal to the surface of the outer wall panel) between the panels on both sides of the joint, the panels are sandwiched between the surface-side mounting part of the gasket and the back-side pressing plate. Therefore, the deviation can be absorbed and the joint can be finished smoothly.

According to the second aspect of the present invention, since the extended fin portion which is always in contact with the back surface side of the panel is provided at the tip of the pressing plate, the size of the joint portion and the thickness of the outer wall panel (exterior surface material) can be reduced. Nevertheless, good water stopping performance can be secured.

According to the third aspect of the invention, an operator can work from one end side in the longitudinal direction of the joint portion of the panel. Therefore, when this gasket is attached to the vertical joint of the outer wall panel, the worker can work while staying at the upper end of the joint, and the worker can move up and down by providing a scaffold on the outer periphery of the building. You can work easily and safely without having to proceed.

According to the fourth aspect of the invention, the pressing plate can be opened or closed by adjusting the internal pressure of the tube portion, and the work of inserting the gasket into the joint portion can be facilitated. it can.

According to the fifth aspect of the invention, since the tube portion itself is easily crushed, the depressurizing operation for closing the pressing plate becomes easy.

According to the sixth aspect of the invention, the gasket can be easily attached to the joint portion only by inserting the gasket while drawing a vacuum.

[Brief description of drawings]

FIG. 1 is a sectional view showing a structure of a gasket which is a first embodiment of the present invention.

FIG. 2 is a cross-sectional view showing a structure of a joint portion to which the gasket is attached.

FIG. 3 is a cross-sectional view showing a state in which the gasket is attached to joints of various width dimensions.

FIG. 4 is a cross-sectional view showing a state in which the gasket is mounted on joints having various width dimensions.

FIG. 5 is an explanatory view for explaining a gasket mounting method according to a second embodiment of the present invention, in which (a) is a cross-sectional view showing a state in which a pressing plate of the gasket is fitted in a jig;
(B) is a perspective view showing the same state.

FIG. 6 is an explanatory view for explaining a method of mounting the gasket, FIG. 6A shows a state in which the gasket and the jig assembled in the state of FIG. 5 are inserted into the joint portion of the outer wall panel of the building. FIG. 3B is a perspective view showing the state after the insertion is completed.

7 (a) is a cross-sectional view of the state of FIG. 6 (b) seen from above, and FIG. 7 (b) is a state in which the same gasket is removed from the jig by pulling up the cord from the state shown in (a). It is sectional drawing which shows the state made to detach.

FIG. 8 is a sectional view showing a structure of a gasket which is a third embodiment of the present invention.

FIG. 9 is a cross-sectional view for explaining a method of constructing the gasket.

FIG. 10 is a sectional view for explaining the operation of the gasket.

FIG. 11 is a sectional view showing a structure of a gasket which is a fourth embodiment of the present invention.

FIG. 12 is a sectional view showing still another modification of the other embodiment of the present invention.

FIG. 13 is a sectional view showing a structure of a gasket which is a fifth embodiment of the present invention.

FIG. 14 is a cross-sectional view showing a mounted state of a conventional gasket.

FIG. 15 is a cross-sectional view showing a mounted state of another conventional gasket.

FIG. 16 is a cross-sectional view showing a mounted state of still another conventional gasket.

[Explanation of symbols]

 20 outer wall panel 21 exterior surface material (part of outer wall panel) 21c angle 22 joint portion 30, 50, 60, 70 gasket 32 surface mounting portion 34 pressing plate 34a outer side surface 36 warp portion 40 jig 41 U-shaped groove portion 51 tube 51a Strip plate 52, 53, 57a Hinge 55 Hollow part 57 Extension fin part

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification code Internal reference number FI Technical display location E04B 2/56 605 E 6951-2E 611 B 6951-2E M 6951-2E 642 F 6951-2E 644 C 6951-2E D 6951-2E 2/94 E04F 13/08 Y 9127-2E

Claims (6)

[Claims] 1. A gasket for an outer wall panel inserted into a joint between an outer wall panel and an adjacent outer wall panel, the gasket having a width that is arranged on the front surface side of the outer wall panel and covers the joint. -Shaped surface-mounting portion, and the tip end of the outer wall is provided so as to project at the center in the width direction of the rear surface of the surface-mounting portion and each tip extends obliquely so as to spread outward in the width direction of the joint portion, and each outer surface is the outer wall on the rear surface side of the joint portion. A gasket for an outer wall panel, comprising a pair of fin-shaped flexible pressing plates that come into contact with the corners of the ends of the panel. 2. A warp portion protruding outwardly at the tip of each of the pressing plates and curving back to the front mounting portion side is provided, and an extension fin portion extending to the front mounting portion side via a hinge is provided at the front end of the warping portion. The gasket for an outer wall panel according to claim 1, wherein 3. A pair of pressing plates extending outward of the outer wall panel gasket are forcibly closed and fitted into U-shaped grooves provided in a jig, and in this state, the surface of the outer wall panel The outer wall panel gasket and the jig on the back side of the outer wall panel, and the outer wall panel gasket and the jig from one end to the other end in the longitudinal direction of the joint. After the insertion, after inserting, the pressing plate of the gasket for the outer wall panel is removed from the U-shaped groove of the jig, and the elastic restoring action of itself causes the outer surface of the obliquely extending pressing plate to be on the rear surface side of the joint portion. The method of mounting a gasket for an outer wall panel according to claim 1, wherein the outer wall panel is brought into contact with an edge corner of the outer wall panel. 4. The gasket for an outer wall panel according to claim 1, wherein a tube portion having a hollow portion is integrally formed inside the pair of pressing plates. 5. The gasket for an outer wall panel according to claim 4, wherein the peripheral wall of the tube portion is formed of a strip plate connected via a hinge. 6. A vacuum is drawn inside the hollow portion of the outer wall panel gasket to shrink the tube portion to close the pair of pressing plates, and in this state, the mounting portion is positioned on the surface side of the joint portion, After inserting the gasket for the outer wall panel into the section, after the insertion, the vacuuming of the hollow section is stopped and the outside air is introduced to restore the tube section and open the pair of pressing plates. The outer surface of the plate is brought into contact with the corner of the end portion of the outer wall panel on the back surface side of the joint portion.
Installation method of the gasket for outer wall panel described.