JP2018003345A - Joint cover and joint structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a joint cover and a joint structure that can improve fire resistance performance.SOLUTION: A joint cover 1 is provided at a joint 20 formed between outer wall substrate materials 21 of a building, and comprises: an in-joint insert part 11 inserted into the joint 20; a joint outer part 12 located on an outdoor side of the joint 20; and a lock part 13 provided at an indoor-side place of the in-joint insert part 11 and locked to the outer wall substrate material 21. On both surface parts of the in-joint insert part 11 on sides facing a header of the outer wall substrate material 21, a thermally expanding fire-resistant material 14 is provided which expands, for example, by eight times when receiving heat of a predetermined temperature (for example, 200°C) or higher.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a joint cover that covers joints of an outer wall panel and a joint structure using the joint cover.

  When joints are generated on the outer wall of the building due to the panel method, etc., the joint structure that closes the joints is a wet waterproof joint structure using a sealing, a dry waterproof joint structure using a gasket, and a hat type joint material. 2. Description of the Related Art A dry-type waterproof joint structure that is fixed to a building frame such as a pillar with a screw or the like is conventionally known.

  Further, Patent Document 1 discloses a water stop structure in which the back side edges of the exterior face materials on both sides arranged adjacent to each other on the left and right are arranged on the front surface of the pillar of the building. In this water stop structure, the joint cover is attached to the joint by a dedicated concave-convex engagement in which one is a concave portion and the other is a convex portion.

JP 2014-0666036 A

  However, since the structure disclosed in Patent Document 1 is a structure in which the convex part on the other side is fitted into the concave part on one side, there is a drawback that it is difficult to perform mounting unless the mutual positional accuracy is sufficient. is there. Moreover, in the joint structure using the said sealing and a gasket, since these raw materials consist of resin, there exists a fault that it is not easy to ensure fireproof performance. Moreover, in the joint structure using the hat-type joint material, since the material can be a metal, it is easy to ensure fire resistance performance, but because it is fixed to the building housing with screws or the like as described above, There is a problem that the water stoppage performance decreases.

  An object of this invention is to provide the joint cover and joint structure which can improve fireproof performance in view of said situation.

  In order to solve the above-mentioned problem, the joint cover of the present invention is a joint cover provided on a joint formed between the outer wall base materials of a building, and the joint plug portion inserted into the joint, and the above It is characterized by comprising a joint exterior located on the outdoor side of the joint and a thermally expandable refractory material made of a refractory material that expands when receiving heat of a predetermined temperature or higher.

  If it is said structure, the said joint insertion part in the said joint cover and the said joint exterior can be formed with a nonflammable metal plate etc., and since the said heat-expandable fireproof material is provided, fireproof performance is improved. it can.

  The joint insertion part and the joint exterior may be integrally formed by bending a metal plate. According to this, compared with forming the said joint insertion part and the said joint exterior by welding etc., the preparation cost of a joint cover can be reduced.

  The heat-expandable refractory material may be provided on a surface portion of the joint insertion portion that faces a small edge of the outer wall base material. According to this, the said heat-expandable refractory material expand | swells at the time of a fire, and can interrupt | block a flame in the location of the edge of the said outer wall base material.

  The thermally expandable refractory material may be provided on a surface portion outside the joint facing the outdoor side surface of the outer wall base material. According to this, the said thermally expansible refractory material expand | swells at the time of a fire, and can interrupt a flame in the location between the said outer wall base material and the said joint exterior.

  You may provide the latching | locking part which latches the said joint cover to the said outer wall base material in the front end side of the said joint insertion part. Since the joint cover is locked to the outer wall base material by the locking portion, it is possible to avoid the problem of the water stoppage and the thermal bridge due to the formation of the through-hole when the screws are fastened with screws. Moreover, since it is not necessary to attach the conventional member for uneven | corrugated engagement to the wall side, attachment property can also be improved.

  The joint structure of the present invention is characterized in that any one of the joint covers described above is provided on the joint formed between the outer wall base materials of the building.

  In the joint structure, the outer wall base material is composed of a first base plate on the outdoor side and a second base plate on the indoor side, and the indoor side corner of the small edge of the first base plate is cut out, and the first lower base plate The locking portion may be locked in a recess formed by the notch that can be formed so that the edge of the base plate and the second base plate are substantially flush with each other. According to this, the joint cover can be easily attached to the joint using the recess formed in the joint.

  Alternatively, in the joint structure, the outer wall base material is composed of a first base plate on the outdoor side and a second base plate on the indoor side, and the gap between the fore edges of the second base plate is larger than the fore edge of the first base plate. The locking portion may be locked to the stepped portion. According to this, the joint cover can be easily attached to the joint using the step portion formed on the joint.

  In the joint structure, a first waterproof material is affixed to an outdoor side surface of the outer wall base material, and the joint cover is attached so that the joint exterior is located on the outdoor side of the first waterproof material. A waterproof surface in which the first waterproof material and the second waterproof material are continuous may be formed by covering the outside with a second waterproof material. According to this, since the waterproof surface which the said 1st waterproof material and 2nd waterproof material continue is formed, the waterproofness of an outer wall can be improved.

  The joint cover according to the present invention can improve fire resistance. Moreover, if it is the joint structure in which the said 1st waterproof material and a 2nd waterproof material form the waterproof surface which continues, there exists an effect that the waterproofness of an outer wall can be improved.

It is explanatory drawing which showed the joint cover concerning embodiment of this invention. It is a perspective view of the joint cover of FIG. FIG. 2 is a schematic horizontal sectional view of an outer wall showing a joint structure using the joint cover of FIG. 1, in which FIG. 1 (A) shows before the joint cover is attached, and FIG. 1 (B) shows after the joint cover is attached. ing. FIG. 4 is a schematic horizontal sectional view showing a column arrangement portion in the joint structure of FIG. 3. FIG. 4 is a schematic horizontal sectional view in which an exterior material is arranged in the joint structure of FIG. 3. It is the outline horizontal sectional view of the outer wall which showed the joint structure of other embodiment using the joint cover of FIG. 1, the figure (A) shows before mounting | wearing of the joint cover, and the figure (B) is the joint cover. It shows after wearing. It is explanatory drawing which showed the joint cover of other embodiment of this invention. It is explanatory drawing which showed the joint cover of other embodiment of this invention.

Embodiments of the present invention will be described below with reference to the accompanying drawings.
As shown in FIG. 1 and FIG. 2, the joint cover 1 according to this embodiment includes a joint plug 11 inserted into a joint 20 formed between outer wall base materials 21 of a building, and the joint 20. The joint exterior 12 located outside, the latching | locking part 13 which latches the said joint cover 1 to the said outer wall base material 21, and the thermally expansible refractory material 14 are provided.

  Further, the joint cover 1 is formed by bending a long metal plate having a thickness of about 0.35 mm and a predetermined width so as to be folded on the center line in the width direction, thereby forming the joint insertion portion 11. In addition, the joint exterior 12 is formed by being bent in a direction of approximately 90 degrees with the joint joint 11 on the line between the width direction center line and the long side. That is, by bending the metal plate, the joint insertion part 11 and the joint exterior 12 are integrally formed so as to form a substantially T shape. Furthermore, the edge of the joint exterior 12 which is the long side is bent so as to be directed to the outer wall side, and the edge is not exposed to the outdoor side of the outer wall.

  The width of the joint exterior 12 is made larger than the width of the joint 20, for example, 80 mm or less, and is covered with a waterproof tape (second waterproof material) having a width of 100 mm, which will be described later. .

  The said locking part 13 is a piece-like thing provided in the front end side (indoor side) of the said joint insertion part 11, and is dotted and arranged by the longitudinal direction of the said joint insertion part 11 at intervals. The Moreover, the said latching | locking part 13 consists of the substantially hook-shaped metal latching pieces 13a each provided in the both ends of the front-end | tip of the said joint insertion part 11, These latching pieces 13a are carried out by the rivet (caulking) 13b. It is fixed to the joint joint 11. The part of the both locking pieces 13a farthest from the joint insertion part 11 is inclined in a direction approaching the joint exterior 12 side, and the locking part 13 from the outdoor side toward the indoor side. It is easy to insert in the joint. The distance between both ends of the farthest portion is wider than the width of the joint 20, and the locking piece 13 a is elastic so that the distance between both ends of the farthest portion is narrower than the width of the joint 20. Have. That is, the locking portion 13 has a width that is wider than the width of the joint 20 and has elasticity that can be narrower than the width of the joint 20.

  The heat-expandable refractory material 14 is made of, for example, a resin, rubber, or the like that expands about eight times when receiving heat of a predetermined temperature (for example, 200 ° C.) or more. It is provided on both surface portions of the joint plug 11 that faces the forehead. About this thermally expansible refractory material 14, it can fix to the surface part of the said joint insertion part 11 easily by using the thing by which the one side was made into the adhesion surface.

  In the joint structure shown in FIGS. 3A and 3B, the joint 20 is formed between the adjacent outer wall panels 2 and 2. Each outer wall panel 2 includes the outer wall base material 21 and a panel frame 22 that supports the outer wall base material 21. For example, the outer wall base material 21 is fixed to the panel frame 22 by a tapping screw. Yes. The outer wall base material 21 includes a first base plate 21a having fire resistance provided on the outdoor side (for example, a thin ALC having a thickness of 35 mm) and a second base plate 21b having fire resistance provided on the indoor side ( For example, a reinforced gypsum board having a thickness of 15 mm). The interior corners of the first base plate 21a are cut out (chamfered), and the recesses 20a are formed by the cutouts so that the first base plate 21a and the second base plate 21b can be substantially flush with each other. The locking portion is locked. Note that a thermal expansion refractory material 26 similar to the thermal expansion refractory material 14 is also provided at a portion of the panel frame 22 located in the vicinity of the edge of the second base plate 21b.

  In the joint structure, a waterproof sheet (first waterproof material) 25 is attached to the outdoor side surface of the first base plate 21 a in the outer wall base material 21. The joint cover 1 is mounted so that the joint exterior 12 is located on the outdoor side of the waterproof sheet 25. The exterior side of the joint joint 12 is covered with a waterproof tape (second waterproof material) 27 having adhesiveness, and a waterproof surface is formed in which the waterproof sheet 25 and the waterproof tape 27 are continuous. . The waterproof sheet 25 may be a moisture permeable waterproof sheet having moisture permeability.

  If it is said joint cover 1, since it latches to the outer wall base material 21 by the said latching | locking part 13, the problem of the water stop and the thermal bridge by the formation of a through-hole at the time of fastening with a screw | thread etc. can be avoided. Moreover, since the said joint insertion part 11 and the joint exterior 12 can be formed with a nonflammable metal plate etc., and since a thermally expansible refractory material is provided, fire resistance can be improved. Furthermore, since there is no need to attach a conventional dedicated member for concave-convex engagement to the wall side, the attachment can be improved.

  When the joint insertion part 11 and the joint exterior 12 are integrally formed by bending a metal plate, compared to forming the joint insertion part and the joint exterior by welding or the like. The manufacturing cost of the joint cover 1 can be reduced.

  When the heat-expandable refractory material 14 is provided on the surface portion of the joint insertion part 11 facing the small edge of the outer wall base material 21, the heat-expandable refractory material 14 expands in the event of a fire, and the outer wall It is possible to block the flame at the small edge of the base material 21.

  When the locking portion 13 has a width wider than the joint 20 and has elasticity that can be narrower than the width of the joint 20, the locking portion 13 is pushed into the joint 20, The joint cover 1 can be easily locked to the joint 20.

  Further, in the joint structure, as described above, when the waterproof surface in which the waterproof sheet 25 and the waterproof tape 27 are continuous is formed, the waterproof property of the outer wall can be enhanced.

  In addition, the joint structure has a structure in which the locking portion 13 is locked in the recess 20a formed by the notch that can make the fore ends of the first base plate 21a and the second base plate 21b substantially flush with each other. Therefore, the joint cover 1 can be easily attached to the joint 20. The notch (chamfering) at the corner of the first base plate 21a on the indoor side originally existed as a chamfer for the outdoor surface of the thin ALC used as the first base plate 21a. By using the inside out, the recess 20a is obtained by the notch without requiring any special processing.

  FIG. 4 shows a structure part in which the pillar 3 is arranged on the indoor side of the joint 20. In the structure where the pillars 3 are arranged, the outer wall panels 2 and 2 are fixed to the pillars 3 using, for example, fasteners 4. FIG. 5 shows an example of a structure in which an exterior material 23 (for example, ceramic siding) is fixed to the outdoor side of the outer wall base materials 21 and 21 by a fixing bracket 28.

  Next, other embodiments will be described. As shown in FIGS. 6A and 6B, in the joint structure of this embodiment, the outer wall base material 21 is composed of a first base plate 21a on the outdoor side and a second base plate 21b on the indoor side. Become. And the latching | locking part 13 of the said joint cover 1 is latched by the step part 20b which can make the space | interval between the foreheads of the said 2nd baseplate 21b larger than between the foreheads of the said 1st baseplate 21a. According to this, the joint cover 1 can be easily attached to the joint 20 using the step portion 20 b formed on the joint 20. Here, a thin ALC is not used as the first base plate 21a, and a reinforced gypsum board is used as both the first base plate 21a and the second base plate 21b to reduce the weight of the outer wall. .

  In the joint cover 1 shown above, the thermally expandable refractory material 14 is provided on the surface portion of the joint insertion portion 11 on the side facing the fore edge of the outer wall base material 21, but is not limited thereto. . As shown in FIG. 7, the thermally expandable refractory material 14 may be provided on a surface portion of the joint exterior 12 facing the outdoor side surface of the outer wall base material 21. According to this, the said heat-expandable refractory material 14 expand | swells at the time of a fire, and a flame can be interrupted | blocked in the location between the said outer wall base material 21 and the said joint exterior 12.

  Moreover, in the joint cover 1 shown above, the joint insertion part 11 has a substantially T shape in which the two bent surface portions of the metal plate are close to each other, but is not limited thereto. As shown in FIG. 8, the two bent surface portions of the metal plate forming the joint insertion portion 11 may be separated from each other to form a substantially hat shape. In addition, the joint insertion part 11 may be a metal plate bent into a substantially mountain shape with a sharpened indoor side, or a metal plate bent into a substantially Ω shape with a wide indoor side.

  As mentioned above, although embodiment of this invention was described with reference to drawings, this invention is not limited to the thing of embodiment shown in figure. Various modifications and variations can be made to the illustrated embodiment within the same range or equivalent range as the present invention.

DESCRIPTION OF SYMBOLS 1: Joint cover 2: Outer wall panel 11: Joint insertion part 12: Joint exterior 13: Locking part 13a: Locking piece 13b: Rivet 14: Thermally expansible refractory material 20: Joint 20a: Concave part 20b: Step part 21 : Outer wall base material 21a: First base plate 21b: Second base plate 22: Panel frame 23: Exterior material 25: Waterproof sheet (first waterproof material)
27: Waterproof tape (second waterproof material)

Claims (7)

  A joint cover provided on a joint formed between the outer wall base materials of the building, the joint insertion part inserted into the joint, the joint outside located on the outdoor side of the joint, and heat of a predetermined temperature or more And a thermally expandable refractory material made of a refractory material that expands when subjected to heat.   2. The joint cover according to claim 1, wherein the joint insertion portion and the joint exterior are integrally formed by bending a metal plate.   The joint cover according to claim 1 or 2, wherein the thermally expandable refractory material is provided on a surface portion of the joint insertion portion facing a small edge of the outer wall base material. .   The joint cover according to claim 1 or 2, wherein the thermally expandable refractory material is provided on a surface portion outside the joint facing the outdoor side surface of the outer wall base material.   The joint cover according to any one of claims 1 to 4, further comprising: a locking portion that locks the joint cover to the outer wall base material at a distal end side of the joint insertion portion. And joint cover.   A joint structure according to any one of claims 1 to 5, wherein joint joints according to any one of claims 1 to 5 are provided on joints formed between outer wall base materials of buildings.   The joint structure according to claim 6, wherein a first waterproof material is affixed to an outdoor side surface of the outer wall base material, and the joint cover is disposed so that the joint exterior is located on the outdoor side of the first waterproof material. A joint structure is formed, wherein a waterproof surface in which the first waterproof material and the second waterproof material are continuous is formed by covering the outside of the joint with a second waterproof material.

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