JP6875112B2 - Joiner for outer wall material and joint structure of outer wall material using this joiner - Google Patents

Description

The present invention relates to a joiner for an outer wall material and a joint structure of an outer wall material using the joiner.

Patent Document 1 discloses a conventional joiner for an outer wall material. The outer wall material joiner described in Patent Document 1 is used in a so-called sealing-less construction method in which a sealing agent is not filled in the vertical joints between the outer wall materials arranged side by side.

In the structure of the outer wall of Patent Document 1, a backing siding portion is provided at the side end portion of one of the two outer wall materials arranged side by side, and the side end portion of the other outer wall material is provided with a backing siding portion. No step processing is done. In the structure of this outer wall, the side ends of the two outer wall materials are butted against each other, and the protruding portion of the joiner fixed to the wall base is inserted into the backing siding portion. Then, a packing material is interposed between the protruding portion of the joiner and the backing siding portion, and between the protruding portion and the side end surface of the other outer wall material to seal the seal.

Japanese Patent No. 5279086

However, when the joiner described in Patent Document 1 is used, the side end portion of one of the outer wall materials must be cut to form a backing siding portion, which requires time and effort for construction.

The present invention has been made in view of the above problems, and it is an object of the present invention to provide a joiner for an outer wall material and a joint structure of an outer wall material using the joiner, which can reduce the labor of construction while maintaining waterproofness. And.

The outer wall material joiner according to one aspect of the present invention is a vertically long joiner arranged on the back surface of a butt joint in which two outer wall materials arranged side by side are butted against each other, and is vertically long. In addition, a pair of left and right waterproofing materials that are pressed against the back surface of the side end portion of the outer wall material and a pair of left and right adhesive holders that can hold the adhesive that is adhered to the back surface of the butt joint of the outer wall material. It is characterized in that the pair of waterproofing materials are arranged between the pair of adhesive holding portions in a front view .

The outer wall material joiner is arranged behind the butt joint between the outer wall materials and has a vertically long concave groove that opens toward the butt joint between the pair of water blocking materials. Is preferable.

Further, in the outer wall material joiner, a plurality of the adhesive holding portions are provided along the longitudinal direction of the joiner, and the outer wall material is attached to the building frame between the adhesive holding portions. It is preferable that a space is provided to prevent interference with the material fixture.
Further, in the outer wall material joiner, the space has a first space and a second space, and the first space is formed to have a longer length in the longitudinal direction of the joiner than the second space. , It is preferable that the outer wall material attachment is arranged in the first space.

The joint structure of the outer wall material according to one aspect of the present invention is characterized in that the joiner for the outer wall material is arranged on the back surface of the butt joint between the outer wall materials.

Further, the joint structure of the outer wall material is such that at least one of the upper end surface and the lower end surface of the side end portion of the outer wall material near the joint portion, the portion corresponding to the water blocking material or the inside in the left-right direction from the other. It is preferable that a water blocking material is attached.

According to the present invention, since waterproofing can be achieved with a waterproof material that presses against the back surface of the side end portion of the outer wall material, the outer wall material can be easily joined by the so-called sealingless method.

It is a breaking perspective view of the joint structure of the outer wall material which concerns on Embodiment 1 of this invention. It is a breaking perspective view of the same as above. It is a breaking perspective view of the same as above. It is a perspective view which omitted the outer wall material of the joint structure of the outer wall material which concerns on Embodiment 2 of this invention. It is a breaking perspective view of the same as above. It is a horizontal sectional view of the same as above.

[Embodiment 1]
Hereinafter, an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

In FIGS. 1 to 3, reference numeral 2 indicates an outer wall material. The outer wall material 2 is a panel-type outer wall material having a rectangular shape when viewed from the front, and is installed on the outdoor side of the building frame 8 such as columns and structural panels. The outer wall material 2 of the present embodiment is fixed to the vertical furring strip 7 fixed to the pillar as the building frame 8 via the outer wall material attachment 5, or the outer wall material attachment to the pillar. It is fixed via 6.

A case where the outer wall material 2 is attached to the outer surface of the building frame 8 via the vertical furring strip 7 will be described. The outer wall material attachment 5 used in this case has a rectangular plate-shaped fixing plate portion 50 fixed to the surface of the vertical furring strip 7. A screw hole through which the fixing screw 80 is inserted is formed through the center of the upper portion of the fixing plate portion 50 in the width direction. Further, a rectangular plate-shaped support piece 51 projects from a substantially central portion in the vertical direction of the surface (outdoor side surface) of the fixed plate portion 50. The support piece 51 supports the lower end of the outer wall material 2 (referred to as the upper outer wall material 2) located above the outer wall material attachment 5.

Both side portions in the left-right direction at the protruding end of the support piece 51 are lower bent pieces 53. The lower bent piece 53 is formed by bending the tip of the support piece 51 downward in a stepped manner, and is formed by the outer wall material 2 located below the outer wall material attachment 5 (referred to as the lower outer wall material 2). ) Is hooked on the back real part 21. The back solid portion 21 is formed at the back end portion of the upper end portion of the outer wall material 2.

On the other hand, the central portion in the left-right direction at the protruding end of the support piece 51 is an upper bent piece 52 bent upward. The upper bent piece 52 is inclined so as to be located upward toward the front side, and is configured to be locked in the locking groove 23 formed at the lower end of the outer wall material 2 on the upper side.

At this time, the surface material portion 22 provided on the lower edge of the surface side of the outer wall material 2 on the upper side overlaps with the back material portion 21 of the upper edge of the outer wall material 2 on the lower side in front view, and is on the upper side. Since the outer wall material 2 and the lower outer wall material 2 are joined together (this portion is called a siding joint portion), waterproofing is achieved between the outer wall materials 2 and 2 arranged one above the other.

Further, at both ends of the fixing plate portion 50 in the width direction (left-right direction), a pair of spacing holding plate portions 54 are formed so as to project to the outdoor side and maintain the spacing between the vertical furring strip 7 and the outer wall material 2. There is. The protruding end of each spacing plate portion 54 is bent outward in the width direction of the fixing plate portion 50, and the protruding end is in contact with the back surface of the outer wall material 2.

Next, a case where the outer wall material attachment 6 is attached to the building frame 8 without passing through the vertical furring strip 7 will be described. The outer wall material attachment 6 used in this case has a rectangular plate-like support on the substantially central portion of the surface (outdoor side surface) of the fixing plate portion 50 in the vertical direction, similarly to the outer wall material attachment 5 described above. The piece 61 is protruding. The support piece 61 supports the lower end of the outer wall material 2 on the upper side.

Both side portions in the left-right direction at the protruding end of the support piece 61 are lower bent pieces 63. The lower bent piece 63 is formed by bending the tip of the support piece 61 downward in a stepped manner, and the back solid portion 21 of the outer wall material 2 on the lower side is hooked. The back solid portion 21 is formed at the back end portion of the upper end portion of the outer wall material 2.

On the other hand, the central portion in the left-right direction at the protruding end of the support piece 61 is an upper bent piece 62 that is bent upward. The upper bent piece 62 is inclined so as to be located upward toward the front side, and is configured to be locked in the locking groove 23 formed at the lower end of the outer wall material 2 on the upper side.

Then, the outer wall materials 2 and 2 lined up on the left and right are joined by a sealingless method. The side end faces of the outer wall materials 2 and 2 are not stepped, and the end faces are joined by abutting, and the joiner 3 is arranged behind the abutting portion (hereinafter, butt joint portion).

The joiner 3 is formed in a substantially U-shape in a plan view that opens to the outdoor side, and is a member that is elongated in the vertical direction. The joiner 3 is made of, for example, an extruded product of aluminum or resin, or a bent steel plate. The joiner 3 has a concave groove 30. The concave groove 30 has a bottom plate portion 34 in contact with the building frame 8 and a pair of side plate portions 35 projecting forward from both ends in the width direction of the bottom plate portion 34. The concave groove 30 is formed by the bottom plate portion 34 and the pair of side plate portions 35 in a substantially U-shape in a plan view and opens to the outdoor side, and the upper and lower end portions are formed so as to open upward and downward, respectively. To. The concave groove 30 is arranged so as to open to the outdoor side on the back side of the left and right butt joints of the outer wall materials 2 and 2.

The joiner 3 is fixed to the building frame 8 with a fixture such as a screw or a nail that penetrates the bottom plate portion 34, which is the bottom portion of the concave groove 30. Since the recessed groove 30 is used as a rainwater drainage portion as described later, it is preferable to attach a water blocking washer such as a bonded washer to the fixture, or to use a screw with a water stop function as the fixture.

The front ends of the plate portions 35 on both sides of the joiner 3, that is, the left and right opening edges of the recessed groove 30, are provided with water blocking material holding portions 37, 37 to which the water blocking materials 31, 31 are attached, respectively. The water blocking material 31 is made of, for example, a soft vinyl chloride resin, a soft material such as EPDM or chloroprene silicon, and has a plate-shaped base end portion 31a that is long in the vertical direction and along the outer wall surface, and the base end portion. It has a fin-shaped portion 31b that protrudes from the center of the 31a in the left-right direction to the outside of the opening surface of the concave groove 30 over the entire length of the joiner 3 in the vertical direction and is pressed against the back surface of the outer wall material 2. It is preferable that the protruding end of the fin-shaped portion 31b is inclined toward the center of the opening of the concave groove 30.

On the other hand, the water blocking material holding portion 37 is composed of a pair of water blocking material holding grooves 37a formed in a substantially U-shaped cross section. The openings of the pair of water blocking material holding grooves 37a face each other. The tips of the pair of water blocking material holding grooves 37a are extended so as to approach each other, and hold the left and right end portions 31a of the base end portion 31a of the water blocking material 31 fitted in the water blocking material holding groove 37a. ing. In the present embodiment, the water blocking material 31 is held by fitting the base end portion 31a of the water blocking material 31 into the water blocking material holding groove 37a. For example, the water blocking material 31 is attached to the back surface of the base end portion 31a. It may be attached to the water blocking material holding portion 37 by means such as the attached double-sided adhesive tape.

One of the pair of water blocking materials 31 and 31 is in close contact with the back surface of one of the outer wall materials 2 and 2 arranged side by side, and the other water blocking material 31 is in close contact with the back surface of the other outer wall material 2. This prevents rainwater that has entered the indoor side from the butt joint between the outer wall material 2 and the outer wall material 2 from spreading to the left and right along the back surface of the outer wall material 2. Further, due to the shrinkage of the outer wall material 2, a gap is generated at the butt joint portion, and even if rainwater is blown from this gap, it can be received by the concave groove 30. As described above, the lower end of the concave groove 30 is open downward, and the invading rainwater is flowed downward by the concave groove 30 and discharged to the outside, so that the concave groove 30 does not spread to the left or right. When the lower end of the joiner 3 is located below the lower end of the lowermost outer wall material 2, the lower end of the concave groove 30 does not have to be opened downward.

As shown in FIG. 1, it is preferable to attach a water blocking material 36 for preventing lateral running of water to the upper end surface of the back solid portion 21 near the side end portion of the outer wall material 2. The water blocking material 36 is made of, for example, a soft vinyl chloride resin, a soft material such as EPDM or chloroprene silicon, and is located at a portion of the outer wall material 2 in contact with the water blocking material 31 at the upper end, or is an outer wall from this portion. It is preferable that the materials 2 are located close to the abutting surface of the materials 2. As a result, it is possible to prevent the rainwater that has entered the butt joint portion from laterally running along the back solid portion 21, and it is possible to guide the rainwater to the concave groove 30. As a result, it is possible to prevent the water that has entered the butt joint portion from flowing out to the outside in the left-right direction of the water blocking material 31.

Further, adhesive holding portions 32 are formed at the front ends of the left and right side plate portions 35, respectively, over the entire vertical direction of the joiner 3. The adhesive holding portion 32 is formed so as to spread outward in the left-right direction of the side plate portion 35, and is located outside the water-stopping material 31 in the left-right direction. Further, each adhesive holding portion 32 has an adhesive holding groove 32a that opens to the outdoor side and is filled with the adhesive 33.

The adhesive 33 here adheres to the back surface of the outer wall material 2 and adheres and fixes the joiner 3 and the outer wall material 2 so as to straddle the vertical joint of the abutted outer wall material 2 so as to straddle the jointer 3 and the outer wall material 2. Since the end portions of the outer wall material 2 are firmly fixed via the adhesive 33, even if the outer wall material 2 shrinks in size over time, the side end portions of the outer wall material 2 are prevented from being separated from each other. Therefore, the gap between the butt joints does not expand, the waterproof property can be maintained, and there is no problem in appearance. Further, even if the outer wall material 2 absorbs water and expands at the initial stage after construction, and the side ends of the outer wall material 2 are pressed against each other at the abutting portion and try to rise to the outdoor side, the joiner 3 as described above. By adhering and fixing the outer wall material 2 and the outer wall material 2, this floating can be prevented and the waterproof property can be improved.

It is preferable that the adhesive 33 is not filled in the adhesive holding groove 32a located near the joint portion between the outer wall materials 2 and 2 adjacent to each other. This is to prevent the adhesive 33 from being pressed and protruding from the joint portion of the outer wall material 2 when the outer wall material 2 is constructed.

The water blocking material 31 is shipped from the factory in a state of being attached to the joiner 3 in advance. The adhesive 33 is filled in the adhesive holding groove 32a at the construction site. The adhesive 33 may be shipped in a state of being attached to the joiner 3 in advance in the same manner as the water blocking material 31.

The adhesive holding portion 32 is preferably located on the outer side in the left-right direction of the water blocking material 31, but may be arranged on the inner side of the water blocking material 31.

When the adhesive holding portion 32 for holding the adhesive 33 is provided on the joiner 3 and the joiner 3 and the outer wall material 2 are adhesively fixed, the joiner 3 does not have to be fixed to the building skeleton 8. In this case, the joiner 3 is fixed via the outer wall material 2 by constructing the outer wall material 2 in a state of being temporarily fixed to the outer surface of the building frame 8 with double-sided adhesive tape or an adhesive.

[Embodiment 2]
Next, the second embodiment will be described with reference to FIGS. 4 to 6. Since this embodiment is almost the same as that of the first embodiment, the same parts will be designated by the same reference numerals and description thereof will be omitted, and different parts will be mainly described.

The outer wall material joiner 3 (hereinafter referred to as joiner 3) of the present embodiment is attached to the building skeleton 8 as shown in FIG. The building frame 8 of the present embodiment includes columns 81 (including studs), structural plywood 82 arranged on the outdoor side of the columns, and a moisture-permeable waterproof sheet 83 provided on the outdoor side surface of the structural plywood 82. It is composed of the provided wall base.

Like the joiner 3 of the first embodiment, the joiner 3 is a metal member elongated in the vertical direction, and is formed by bending a metal plate. The joiner 3 has a concave groove 30 formed in a substantially U-shape in a plan view having an opening on the outdoor side, a water blocking material holding portion 37 formed at an end portion of the concave groove 30 on the outdoor side, and a water blocking material. A plurality of adhesive holding portions 32 extending from the holding portion 37 are provided.

As shown in FIG. 5, the concave groove 30 has a bottom plate portion 34 and a pair of side plate portions 35 projecting forward from both ends in the width direction of the bottom plate portion 34, as shown in FIG. The joiner 3 is attached to the building skeleton 8 by screwing the fastener inserted through the bottom plate portion 34 into the building skeleton 8.

The water blocking material holding portion 37 is composed of a pair of flange pieces 370 extending in a direction away from each other from the outdoor end portion of the bottom plate portion 34. A strip-shaped water blocking material 36 is attached to the water blocking material holding portion 37. The water blocking material holding portion 37 is continuously formed over the entire length of the concave groove 30 in the length direction.

The plurality of adhesive holding portions 32 extend from the tip of the water blocking material holding portion 37 along the back surface of the outer wall material 2. The adhesive holding portion 32 is formed in a substantially rectangular shape in a plan view. The adhesive 33 can be applied to the adhesive holding portion 32, and the adhesive 33 can be held on the back side of the outer wall material 2.

When the outer wall material 2 is installed with the adhesive 33 applied to the adhesive holding portion 32, the adhesive 33 is pushed between the adhesive holding portion 32 and the outer wall material 2 as shown in FIG. Can be unfolded. At this time, the outer wall material 2 and the water blocking material 36 are in close contact with each other, and if the adhesive 33 is cured in this state, it is possible to prevent the side end portion of the outer wall material 2 from rising and rainwater from the butt joint. Even if the siding infiltrates, rainwater can flow down along the concave groove 30 without infiltrating the skeleton side.

Further, as shown in FIG. 4, a space 38 is formed between the plurality of adhesive holding portions 32 arranged in the vertical direction in the present embodiment. The space 38 of the present embodiment has a first space 380 and a second space 381. The first space 380 is formed to be longer in the vertical direction than the second space 381, but the width in the horizontal direction is the same. As shown in FIG. 5, the first space 380 is formed so that a portion corresponding to the siding joint portion of the outer wall material 2 is located, and the outer wall material attachment 6 is arranged in the first space 380. Will be done.

As described above, according to the joiner 3 of the present embodiment, the area of the adhesive holding portion 32 can be increased even if the outer wall material attachment 6 for attaching the outer wall material 2 to the building frame 8 is arranged adjacent to each other. Therefore, it is possible to further prevent the side end portion of the outer wall material 2 from rising. Further, since the area of the adhesive 33 can be increased, the back surface of the outer wall material 2 and the water blocking material 31 can be more firmly adhered to each other, and the water stopping property can be improved.

〔effect〕
As described above, the outer wall material joiner 3 of the above-described embodiment is a vertically long joiner 3 arranged on the back surface of a butt joint portion in which two outer wall materials 2 arranged side by side are butted against each other. A pair of left and right water blocking materials 31 that are long in the vertical direction and are pressure-welded to the back surface of the side end portion of the outer wall material 2 are provided.

According to this configuration, the waterproof material 31 that presses against the back surface of the side end portion of the outer wall material 2 can be waterproof against water ingress from the butt joint. Therefore, the outer wall material 2 can be easily joined by the so-called sealing-less method.

In addition, the outer wall material joiner 3 of the above embodiment has the following additional configurations. That is, the outer wall material joiner 3 of the above embodiment is arranged behind the butt joint between the outer wall materials 2 and has a pair of water blocking materials having a vertically long concave groove 30 that opens toward the butt joint. It is prepared between 31. The term "between the pair of water blocking materials 31" as used herein means the space between the pair of water blocking materials 31 in the front view.

According to this configuration, most of the rainwater that infiltrates from the butt joint can be received by the concave groove 30, while the rainwater that tries to spread along the back surface of the outer wall material 2 is blocked by the water blocking material 31. Can be done. As a result, the waterproof property at the butt joint is improved.

In addition, the outer wall material joiner 3 of the above embodiment has the following additional configurations. That is, the outer wall material joiner 3 of the above embodiment includes an adhesive holding portion 32 capable of holding the adhesive 33 adhered to the back surface of the butt joint portion of the outer wall material 2.

According to this configuration, even if the outer wall material 2 shrinks in size over time, the side ends of the outer wall material 2 are prevented from being separated from each other, so that the gap between the abutting portions does not expand and the waterproof property is maintained. Is possible, and there is no problem in appearance. Further, it is possible to prevent the outer wall material 2 from absorbing water and expanding at the initial stage after construction, and the side end portion at the butt joint portion of the outer wall material 2 from being lifted.

In addition, the outer wall material joiner 3 of the above embodiment has the following additional configurations. That is, in the outer wall material joiner 3 of the above embodiment, a plurality of adhesive holding portions 32 are provided along the longitudinal direction of the joiner 3, and the outer wall material 2 is provided between the adhesive holding portions 32. A space 38 is provided to prevent interference with the outer wall material fixture 6 that attaches the siding to the building frame.

According to this configuration, even if the outer wall material attachment 5 for attaching the outer wall material 2 to the building frame 8 is arranged adjacent to each other, the area of the adhesive holding portion 32 can be increased, so that the outer wall material is further increased. It is possible to prevent the side end of 2 from rising. Further, since the area of the adhesive 33 can be increased, the back surface of the outer wall material 2 and the water blocking material 31 can be more firmly adhered to each other, and the water stopping property can be improved.

Further, the joint structure of the outer wall material of the above embodiment is characterized in that the joiner 3 for the outer wall material is arranged on the back surface of the butt joint portion between the outer wall materials 2.

According to this configuration, even if the butt joint is not sealed, the waterproof material 31 that presses against the back surface of the side end of the outer wall material 2 can be waterproof against the ingress of rainwater from the butt joint. it can.

In addition, the joint structure of the outer wall material of the above embodiment includes the following additional configurations. That is, the joint structure of the outer wall material of the above embodiment is located at least one of the upper end surface and the lower end surface of the side end portion of the outer wall material 2 near the joint portion, which corresponds to the water blocking material 31 or inward in the left-right direction. , Another water blocking material 36 is attached. The term "portion corresponding to the water blocking material 31" as used herein means a portion of the outer wall material 2 that overlaps with the water blocking material 31 when viewed from the front.

According to this configuration, it is possible to prevent rainwater that has entered the butt joint portion from traveling laterally along at least one of the upper end surface and the lower end surface of the outer wall material 2, and it is possible to guide the rainwater to the concave groove 30. ..

〔application〕
In the above embodiment, the outer wall material 2 is a flat panel type, but one outer wall material 2 may have an L-shaped horizontal cross section arranged at the protruding corner of the building. Further, when the outer wall material 2 is attached and fixed to the protruding corner portion of the building via a protruding corner base material having an L-shaped horizontal cross section and a long vertical cross section, the above is applied to both ends of the protruding corner base material, respectively. The joiner 3 may be provided integrally. The construction of the outer wall of the protruding corner can be made easier.

2 Outer wall material 3 Joiner 5, 6 Outer wall material fixture 8 Building frame 30 Concave groove 31 Water stop material 32 Adhesive holder 33 Adhesive 38 Space

Claims (6)

A long vertical joiner placed on the back of a butt joint where two outer wall materials lined up on the left and right are butted against each other.
A pair of left and right water stopping material of each pressure contact with the back surface of the side edge portions of and above of the outer wall material by elongated in the up and down direction,
It is provided with a pair of left and right adhesive holding portions capable of holding the adhesive to be adhered to the back surface of the butt joint of the outer wall material , respectively.
A joiner for an outer wall material , wherein the pair of water blocking materials are arranged between the pair of adhesive holding portions in a front view. The claim is characterized in that the outer wall materials are arranged behind the butt joints and a concave groove long in the vertical direction that opens toward the butt joints is provided between the pair of water blocking materials. Joiner for outer wall material according to 1. A plurality of the adhesive holding portions are provided along the longitudinal direction of the joiner, and in order to prevent interference with the outer wall material fixture that attaches the outer wall material to the building frame between the adhesive holding portions. The joiner for an outer wall material according to claim 1 or 2 , wherein the space is provided. The space has a first space and a second space, and the first space is formed to have a longer length in the longitudinal direction of the joiner than the second space. The joiner for an outer wall material according to claim 3, wherein the outer wall material attachment is arranged. A joint structure of an outer wall material, wherein the joiner for an outer wall material according to any one of claims 1 to 4 is arranged on the back surface of a butt joint between the outer wall materials. It is characterized in that another water blocking material is attached to at least one of the upper end surface and the lower end surface of the side end portion of the outer wall material near the joint portion at the portion corresponding to the water blocking material or inside in the left-right direction from the portion corresponding to the water blocking material. 5. The joint structure of the outer wall material according to claim 5.

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