JP3531292B2 - Joint structure of exterior wall panel and exterior wall panel with gasket - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention
TECHNICAL FIELD The present invention relates to a joint structure of an outer wall panel configured by attaching an outer wall panel such as a panel or a PC panel, and an outer wall panel with a gasket used for the joint structure.

[0002]

2. Description of the Related Art Conventionally, when a plurality of ALC panels or PC panels are vertically and horizontally attached to a frame of a building to form an outer wall, the watertightness and airtightness of joints formed between the small edges of each panel are required. As a sealing method for securing, a method of fixing a gasket made of an elastic body such as rubber to the joint of the panel and inserting it into the joint, or inserting a backup material such as foamed resin into the joint after mounting the panel, There is a method of filling the sealing material on the outdoor side.

However, in any of the construction methods, the physical and chemical characteristics are deteriorated due to the secular change of the materials used,
Also, due to mechanical vibrations such as earthquakes and typhoons, cracks and peeling locally occur at the joint interface between the sealing material and the panel edge surface, and as a result, the sealing performance deteriorates. If the cracks and peeling of the sealing material become large, rainwater will enter the indoor side, so it will be necessary to repair or replace the sealing material.

As a method for preventing rainwater from entering the indoor side even when the sealing property is incomplete due to the cracks or the like, Japanese Patent Application Laid-Open No. 7-11727 discloses a method of communicating with the inner hollow portion as a backup material. A joint that uses a hollow gasket with multiple holes, inserts this gasket into the joint part, fills the sealing material on the outdoor side, and has a drain port that communicates with the hollow part of the gasket at the lower end of the joint. A structure has been proposed. According to this method, rainwater that has entered through cracks in the sealing material enters between the gasket and the sealing material and enters the hollow portion of the gasket through the communication hole.
Eventually, the water is drained to the outside through the drainage port.

However, according to this method, since the gasket has few communication holes and the gasket also serves as a backup material, the sealing material filled in the joints directly contacts the gasket. It is inevitable to block the communication hole. Further, when the atmospheric pressure in the hollow portion of the gasket becomes negative with respect to the outside air due to strong wind and rain, there is a problem that the rainwater flows back from the drain port to reduce the sealing effect.

Further, since the linear gaskets are connected at the intersections of the vertical joints and the horizontal joints by using the cross-shaped gaskets, all the gaskets are integrally connected. Therefore, mechanical vibrations such as earthquakes and typhoons are caused. There was a defect that the cracks of the sealing material and the damage of the gasket itself were apt to be caused by the influence of. Further, since the construction is performed on site, the work of connecting the cross-shaped gasket to the linear gasket at the intersection of the vertical joint and the horizontal joint is troublesome, and there is a risk that the hollow portion of the gasket is displaced.

[0007]

SUMMARY OF THE INVENTION In view of such conventional circumstances, the present invention is capable of collecting rainwater that has entered from joints immediately and reliably and draining it, is less affected by mechanical vibration, and is watertight even after many years of use. And the deterioration of airtightness is extremely small,
An object is to provide a joint structure of an outer wall panel that can be easily installed on site, and a gasket-equipped outer wall panel used for the joint structure.

[0008]

In order to achieve the above object, the joint structure of an outer wall panel provided by the present invention is such that a gasket is inserted into a joint portion of an outer wall composed of a plurality of panels, and the joint is installed on the outdoor side of the gasket. A joint structure filled with a sealing material, wherein the gasket is composed of a hollow tubular gasket body, and a sealing support portion integrally formed along the gasket body at intervals with ribs on the gasket body. The gasket body is pressed against the facing front edge of the panel with the sealing support facing the outdoor side, and there is a gap between at least one side edge of the sealing support and the front edge. The sealing material filled in the joints on the outdoor side of the section, the gasket body, and the sealing support section make it possible to create vertical and horizontal joints. In cross water path communicating is formed, it is characterized in that the lower end of the vertical joint comprising a water path and communication with drain port.

An outer wall panel with a gasket provided by the present invention comprises a panel which is an outer wall material and two gaskets attached to two adjacent front faces of the panel, the gasket being a hollow tubular gasket body, Along with the gasket body and at intervals, it is integrally formed with the gasket body via ribs and is composed of a sealing support part that supports the sealing material filled in the joint part, and this sealing support part faces the outdoor side of the panel. wherein with gasket <br/> Tsu preparative is attached to the panel Te, ceiling support
The width of the port part is the joint of the outer wall where the gasket should be inserted.
Formed slightly smaller than the width of the part and inserted into the joint
When at least one side edge of the sealing support
It is characterized in that a gap is formed between the flannel edge surface .

Particularly, in a preferred embodiment of the present invention,
The gaskets are two linear gaskets respectively attached to two adjacent facets of the panel, and the two linear gaskets are attached to the corners of the panel so that the gasket body and the sealing support are continuous. It consists of one corner gasket.

[0011]

In the present invention, the gasket 2 inserted into the joint portion of the outer wall, as shown in FIG. 1, is a hollow tubular gasket body 3 made of an elastic body, and the gasket body 3 along the gasket body 3 and at intervals. And a sealing support 4 integrally formed with a rib 5 therebetween. The gasket 2 is inserted between the small surface 1a of the adjacent panel 1 of the outer wall (joint portion), so that the hollow tubular gasket body 3 is deformed and pressed against both small surfaces 1a to secure the sealing property. To do. Also, the sealing support unit 4
Since the sealing material 10 is filled on the outdoor side, it has a double seal structure, and there is no need to insert a backup material separately.

With the gasket 2 inserted in the joint,
A water path 6 is formed between the gasket body 3, the sealing support 4, and the sealing material 10. Therefore, even if rainwater enters through the cracks in the sealing material 10,
The water droplets collect on the water path 6 and flow along the water path 6 which is continuous in the vertical and horizontal directions between the vertical joint and the horizontal joint,
Eventually, it will not be flooded indoors because it will be drained from the drain provided at the lower end of the vertical joint. The water path 6 may be on one side as shown in FIG. 1 or may be on both sides with the rib 5 interposed therebetween.

As shown in FIG. 2, a simple method of continuously connecting the water path 6 in the vertical and horizontal directions is to remove the sealing support portion 4 of the gasket 2 inserted in the horizontal joint at the intersection of the vertical joint and the horizontal joint, and remove it. The gasket 2 inserted in the vertical joint may be entirely cut at the same intersection, and its end may be brought into contact with the gasket main body 3 of the horizontal joint from above and below. As a result, water drops flowing through the water path 6 of the gasket 2 inserted in the vertical joint above the intersection and the water path 6 of the gasket 2 inserted in the horizontal joint both pass through the intersection of the joints and reach the bottom of the intersection. Gasket 2 inserted in the vertical joint of
It flows into the water pass 6 of. In this case, it is necessary to close the opening at the intersection of the gasket body 3.

Although both ends in the joint width direction of the sealing support portion 4 may be in contact with the fore edge surface 1a of the panel 1, the width of the sealing support portion 4 is adjusted so that the intruded water droplets easily enter the water path 6. Is slightly smaller than the width of the joint portion formed by the two adjacent fore edge surfaces 1a,
As shown in FIG. 1, it is preferable to form a slight gap between at least one side end of the sealing support 4 and the forefront surface 1a.

Sealing material 1 of the sealing support 4
The outer surface to support 0 is preferably an arc shape curved in the direction of the gasket body 3 as shown in FIG. As a result, when the sealing material 10 is filled in the joint portion,
The sealing support portion 4 has a substantially arcuate shape in which the joint width direction central portion projects to the outdoor side, and the sealing material 10 is filled in a drum shape in cross section along this, so that the adhesive strength between the sealing material 10 and the panel 1 is large. Kikuru, sealing material 1
It is possible to prevent 0 peeling and cracking.

Further, a fin is provided between the gasket body 3 and the sealing support portion 4 of the gasket 2 along the gasket body, and the fin and the sealing support are brought into contact with the facing surface of the opposing panel. A water path can be formed between the parts, and at the same time, an isobaric space can be formed between the fin and the gasket body. By doing so, the water droplets that have flowed into the water path do not enter the isobaric space inside the fins, and it is possible to achieve even higher water tightness.

The material of such a gasket has elasticity required for the gasket body to press-contact with the small surface of the panel, and hardness required for the sealing support portion to function as a backup material for the sealing material, thus ensuring durability. As long as it is an excellent material, rubber, urethane, silicone, ethylene propylene polymer, etc. can be used.

In a preferred embodiment of the present invention, the above-mentioned gasket is installed in the factory in the horizontal and vertical directions of the panel in advance.
Attach it to one of the front edges. As shown in FIG. 3, the preferred form of the gasket to be attached to the panel is, as shown in FIG. 3, two linear gaskets 2a and 2a respectively attached to two adjacent front facets 1a and 1a of the panel 1 and a corner portion 1b of the panel 1. The linear gasket 2a and the corner gasket 2b are formed so that the gasket body 3 and the sealing support portion 4 are continuous with each other.

The gasket may be attached to the panel by using an adhesive, or by inserting the ridge 9 provided on the gasket main body 3 into the groove of the panel 1 as shown in FIG. 1, or by using them together. By using this panel with a gasket, the gasket can be accurately fixed at a specified position on the panel, and at the same time, by simply mounting each panel on the frame with the gasket facing the same direction, the relative position of another panel can be improved. Since the gasket can be accurately and surely crimped to the small edge surface, the on-site construction is extremely simplified and no skill is required.

In the gasket according to the present invention, the shape of the gasket main body may be a hollow tubular shape, but in particular, a hollow circular tubular shape is used so that the abutting portion is not locally deformed when it is pressed against the small surface of the panel. Since it is preferable that the gasket is fixed to the panel in advance, only a part of the fixing side (base portion) can be formed in a planar shape as shown in FIG.

[0021]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. The gasket-equipped panel of this embodiment is a factory in which a rubber gasket having elasticity is attached in an L-shape in advance in the factory along two horizontal and vertical facets of the ALC panel and the corners thereof. That is, as shown in FIG. 3, the L-shaped gasket has two linear gaskets 2a and 2a attached to two adjacent front facets 1a and 1a of the panel 1 and a corner portion 1b of the panel 1, respectively. It is composed of a corner gasket 2b attached along the side.

As shown in FIG. 4, the linear gasket 2a has a hollow body as a whole and has a substantially circular tubular shape, and a part of the gasket body 3 has a flat base 3a in the longitudinal direction.
The gasket body 3 includes a rib 5a extending flush with the base 3a and a sealing support 4 integrally connected to the gasket 5 via a rib 5b parallel to the rib 5a. The sealing support part 4 is formed along the length direction of the gasket main body 3 with a gap of about the radius thereof from the gasket main body 3. Further, the sealing support portion 4 has a curved arc shape toward the gasket body 3 side, and its width is slightly smaller than the width of the joint portion into which the gasket is inserted.

As shown in FIG. 5, the corner gasket 2b has the same structure as that of the straight gasket 1a except that it is bent in an L-shape along the corner 1b of the panel 1. However, in the corner portion 1b of the corner gasket 2b, the side edges of the sealing support portion 4 are orthogonal to each other, and the circular pipe portion of the gasket main body 3 is continuous with the straight pipe portion with a curved surface having a curvature as small as possible. It is preferable to configure as follows. The straight gasket 2a and the corner gasket 2b are integrally connected by inserting one end of the gasket body 3 into the end of the other gasket body 3.

Therefore, when the linear gasket 2a and the corner gasket 2b are connected to each other, the respective gasket bodies 3 and the sealing support portions 4 are continuous to form one L-shaped gasket.
This L-shaped gasket is attached to the front face 1a and the corner 1b of the panel 1 as shown in FIG. 3. In this case, the ridge 9 provided on the flat base 3a of the gasket body 3 is attached to the panel 1.
It is preferable that the flat surface of the base portion 3a of the gasket main body 3 and the rib 5a flush with the base portion 3a of the gasket main body 3 is coated with an adhesive to be fixed to the panel 1 by adhesion.

Next, the construction of the outer wall using this gasketed panel at a construction site will be described. First of all, the two front faces of the L-shape of each panel where the gasket is not fixed are the L of the adjacent panels already attached to the building frame.
The panels are aligned in the same direction so that they come into contact with the gasket body that is fixed in the shape of a letter, and are attached to the building frame in sequence. Then, the gasket body attached to each panel is pressure-fixed to the edge surface of the adjacent panel where the gasket is not attached, and the gasket is inserted and attached to the vertical joint and the horizontal joint at the same time when the panel is attached. In addition, it is preferable to fill the pressure contact portion between the front surface of the panel where the gasket is not fixed and the gasket main body that is fixed to the adjacent panel with a resin or the like because the airtightness can be further improved.

At this time, at the intersection of the vertical joint and the horizontal joint,
As shown in FIG. 6, the two straight gaskets 2a and the corner gaskets 2b are connected to each other and attached to one panel.
The letter gaskets are continuous and the corner gasket 2
On the outside of the curved portion of the gasket body 3 of b, the gasket bodies 3 of the two linear gaskets 2a similarly attached to another panel are pressure-welded. It is preferable that the ends of the gasket body 3 that are pressed against the corner gaskets 2b of the two linear gaskets 2a be closed with resin or the like.
Further, the sealing support portion 4 of the corner gasket 2b and the gasket body 3 are attached to the corner gasket 2b.
The sealing support portions 4 of the two linear gaskets 2a, which are in contact with each other, face each other with a slight gap.

As shown in FIG. 1, the gasket inserted into the joint portion is deformed and pressed so that the circular tubular portion of the hollow tubular gasket body 3 is crushed and compressed by the fore edge surface 1a of the panel 1, and the panel is pressed. A good sealing property is secured between the first small edge surface 1a. When the sealing material 10 is filled on the outdoor side of the sealing support portion 4, the sealing material 10 is filled along the arcuately curved sealing support portion 4,
Since the cross section is formed in a drum shape, the contact area with the forefront surface of the panel 1 is increased, and the panel 1 is firmly adhered to the forefront surface.

A water path 6 is formed between the gasket body 3, the sealing support 4 and the sealing material 10. The water path 6 is continuous in the vertical and horizontal directions at the intersecting joint portion as shown in FIG. 6, and water droplets can freely flow in the vertical direction and the horizontal direction.
Therefore, the water droplets that have entered from the cracks or the like of the sealing material 10 gather on the water path 6 and flow along the water path 6 that is continuous in the vertical and horizontal directions, and finally are drained from the drain port provided at the lower end of the vertical joint.

Although the drainage port may be formed by notching a sealing material to expose the water path to the outside, it is preferable to provide a drainage gutter 11 made of plastic or stainless steel as shown in FIG. That is, the sealing support 4 and the ribs of the gasket 2 are cut and removed at the lower end of the vertical joint, and the root 11a of the drain gutter 11 is inserted and fixed to the portion of the water path 6. The drain gutter 11 is bent in a hook shape, and its tip portion 11b hangs outward and downward from the panel 1 and is open to the outside.

By providing a backflow prevention mechanism at the vertical tip portion 11b of the drain gutter 11, it is possible to prevent backflow of rainwater even if the atmospheric pressure becomes higher than the atmospheric pressure of the water path 6 due to a typhoon or the like. As the backflow prevention mechanism, as shown in FIG. 7, between the lower screen 12 and the upper orifice 14, a lightweight ball 1 having a diameter slightly larger than the inner diameter of the orifice 14 is provided.
There is a structure in which 3 is charged. Normally, the ball 13 is placed on the screen 12 so that water droplets can flow down from the water path 6, but when the external pressure increases, the ball 1
3 rises to block the orifice 14 and prevent backflow of rainwater.

As another backflow prevention mechanism, a plate butterfly valve provided under the screen or a water seal such as a siphon or a trap can be used, but it is small and lightweight and operates with a small pressure difference. The structure having

In FIG. 7, the base portion 1 is formed at the lower end of the vertical joint.
Although an example in which a drain gutter 11 is provided on top of No. 5 is shown, if there is an opening such as a window and it is necessary to drain the water above it, at the lower end of the vertical joint close to the opening such as the window. The drain gutter 11 should be installed. Reference numeral 16 shown in FIG. 7 is a usual hollow circular tubular gasket which has been conventionally used as a backup material.

8 and 9 show another specific example of the gasket according to the present invention. In the gasket 2c shown in FIG. 8, the fins 7 are integrally provided along the gasket body 3 between the gasket body 3 and the sealing support portion 4 on the gasket body 3 and the sealing support portion 4 via the ribs 5a and 5b. is there. By forming the width of the fins 7 so as to abut the facing edge face of the panel, when the gasket 2c is inserted into the joint, the gap between the fin 7 and the gasket body 3 abutting the facet face of the panel. An isobaric space is formed at. Therefore, the fin 7 and the sealing support 4
Water droplets that have entered the water path between and become less likely to enter the inside of the fin 7 that is the isobaric space, and the watertightness can be further improved.

In the gasket 2d shown in FIG. 9, the gasket body 3 and the sealing support portion 4 are integrally provided by being supported by a rib 5 both in the vicinity of the central portion in the joint width direction. Through holes 8 are formed at desired intervals. By using this gasket 2d, a slight gap is formed between both side ends of the sealing support portion 4 and the fore edge surface of the panel, and water paths can be formed on both sides of the rib 5. Moreover, since the two water paths are communicated with each other by the plurality of through holes 8, it is possible to reduce the water immersion pressure of the water droplets flowing through the water paths and improve the water tightness.

Although only the straight gaskets are shown in FIGS. 8 and 9, the corner gaskets corresponding to them are
As in the case of the corner gasket of FIG. 5 with respect to the straight gasket of FIG. 4, the basic structure of the gasket body, sealing support, ribs, etc. is the same, and the structure is bent in an L shape along the corners of the panel. Just do it.

[0036]

According to the joint structure of the outer wall panel of the present invention, since the double seal structure of the gasket and the sealing material is obtained, excellent watertightness and airtightness can be secured.
Moreover, since the sealing support is integrated with the gasket body, it is not necessary to use a backup material separately for filling the sealing material during on-site construction.

Further, since a water path can be formed between the gasket main body of the gasket inserted in the joint portion, the sealing support portion and the sealing material, rainwater may enter the joint portion due to cracks in the sealing material. However, water drops can be reliably collected in the water path, and can be discharged to the outside through the water path communicating with the vertical and horizontal joints through the drain port at the lower end of the water path.

Moreover, if the sealing support portion is curved toward the gasket body side and formed into an arc shape, the cross section of the filled sealing material can be formed into an hourglass shape, so that the adhesive strength between the sealing material and the panel is increased and the sealing material is increased. It is possible to prevent peeling and cracking. Further, by providing a fin between the gasket body and the sealing support to form an isobaric space, water drops passing through the water path do not enter inside the fin, and a more reliable seal can be achieved.

Further, according to the gasket-equipped outer wall panel of the present invention, since the gasket composed of the gasket body and the sealing support is fixed to the front face of the panel in advance at the factory, the gasket-equipped panel is constructed on the spot. It is only necessary to attach the sealant to the sealant and fill it with the sealing material, which simplifies the on-site construction and securely fixes the gasket inserted in the joint portion to the predetermined position of the facing edge of the panel.

In addition, according to the present invention, at the intersection of the vertical joint and the horizontal joint, since the gasket is not integrated in a cross shape in the vertical and horizontal directions at the intersection, the gasket is strong against mechanical vibration due to an earthquake or a typhoon, and therefore Very little deterioration of watertightness and airtightness even after many years of use.

[Brief description of drawings]

FIG. 1 is a schematic sectional view showing a main part of a joint structure according to the present invention.

FIG. 2 is a schematic front view showing a gasket connection state at an intersection of a joint structure according to the present invention.

FIG. 3 is a schematic perspective view of an outer wall panel with a gasket according to the present invention.

FIG. 4 is a schematic perspective view showing a specific example of a linear gasket according to the present invention. FIG. 5 is a schematic perspective view showing a specific example of a corner gasket according to the present invention.

FIG. 6 is a schematic front view showing a connection state of a linear gasket and a corner gasket at an intersection of a joint structure according to the present invention.

FIG. 7 is a schematic cross-sectional view of a lower end portion of a joint structure to which a drain gutter according to the present invention is attached.

FIG. 8 is a schematic perspective view showing another specific example of the linear gasket according to the present invention.

FIG. 9 is a schematic perspective view showing still another specific example of the linear gasket according to the present invention.

[Explanation of symbols]

1 panel 1a Edge face 1b corner 2 gasket 2a Straight gasket 2b corner gasket 3 Gasket body 3a base 4 Sealing support section 5 ribs 6 water passes 7 fins 8 through holes 9 ridges 10 Sealant 11 drainage gutter 12 screens 13 balls 14 Orifice 15 Foundation 16 gasket

─────────────────────────────────────────────────── ─── Continuation of front page (56) References JP-A-5-302368 (JP, A) JP-A-2-304141 (JP, A) JP-A-62-72844 (JP, A) 118506 (JP, U) (58) Fields surveyed (Int.Cl. ⁷ , DB name) E04B 1/684 E04B 2/94

Claims (9)

(57) [Claims] 1. A joint structure in which a gasket is inserted into a joint portion of an outer wall composed of a plurality of panels, and a sealing material is filled on the outdoor side of the gasket, wherein the gasket is a hollow tubular gasket body, It consists of a sealing support part that is integrally formed on the gasket body along the gasket body and at intervals with a rib interposed between the gasket body and the gasket support body. In addition, there is a gap between at least one side edge of the sealing support part and the edge face, and the sealing material filled in the joint part on the outdoor side of the sealing support part and the gasket body and the sealing support part provide vertical joints. A water path is formed between the vertical joint and the horizontal joint, and communicates with the water path at the lower end of the vertical joint. A joint structure for outer wall panels, which is equipped with a drainage port. 2. A gasket body and a sealing support portion, wherein each of the gaskets is curved along a corner of the panel in the same direction as that of the linear gasket sandwiched between two adjacent facets of each panel. 2. The joint structure of the outer wall panel according to claim 1, further comprising a corner gasket that connects two linear gaskets along the edge faces on both sides of the corner so as to be continuous. 3. An outer surface of the sealing support portion is curved toward the gasket main body side and formed into an arc shape, and a cross-section of the sealing material filled on the outdoor side of the sealing support portion has a drum shape. The joint structure of the outer wall panel according to claim 1 or 2. 4. The joint structure for an outer wall panel according to claim 1, wherein the drainage port is a drainage gutter provided with a backflow prevention mechanism. 5. A panel, which is an outer wall material, and two gaskets attached to two adjoining facets of the panel, wherein the gasket is a hollow tubular gasket body, and a gasket body is provided along the gasket body and at an interval. are integrally formed via a rib, is composed of a sealing support portion for supporting the sealing material filled in the joints, the <br/> gasket toward the sealing support portion outdoor side of the panel the panel Attached and
The width of the ring support part is the outer wall where the gasket should be inserted.
It is formed slightly smaller than the width of the joint and is inserted into the joint
At least one side of the sealing support when
An outer wall panel with a gasket, characterized in that a gap is formed between the edge and the edge of the panel. 6. In addition to two gaskets respectively attached to two adjacent front faces of the panel, one corner gasket attached to a corner of the panel is provided, and the corner gasket includes a gasket body and a sealing support. The gasket-equipped outer wall panel according to claim 5, wherein the two gaskets are connected so that the parts are continuous. 7. A sealing material for a sealing support part
The supporting outer surface is curved toward the gasket body to form an arc.
The outer wall panel with a gasket according to claim 5 , wherein the outer wall panel with a gasket is formed. 8. The vicinity of the central portion of the gasket body in the joint width direction
The sealing support part has a rib that has a through hole.
Body-formed, with both side edges of the sealing support
Characterized by forming a gap between the front edge of the panel
The outer wall panel with gasket according to claim 5 or 7 . 9. A gasket body and a sealing support part
A joint panel between which the gasket should be inserted
A fin with a width that can abut the edge face is located along the gasket body.
The gasket body and / or the sealing support.
Characterized in that it is integrally provided via a sleeve,
An outer wall panel with a gasket according to any one of Items 5 to 7 .