JP2018131818A - Exterior wall structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an exterior wall structure with a sealing less structure to prevent masonry joints from standing out while maintaining waterproofness thereof.SOLUTION: A exterior wall structure is constructed by each of adjacent exterior wall members 4 being abutting on each other. A plurality of joiners 2 are arranged in an inner side of a pair of the exterior wall members 4 and are arranged across a masonry joint 8 between a pair of the exterior wall member 4. The joiners 2 comprises a pair of cut-off members 23 arranged in both sides of the masonry joint 8 separated apart from each other and being pressed-abutting to each of corresponding inner side surfaces of the pair of the exterior wall members 4. Each of adjacent end surfaces of the pair of the exterior wall members 4 is oblique toward an indoor/outdoor direction and parallel to each other.SELECTED DRAWING: Figure 5

Description

  The present invention relates to an outer wall structure. In particular, the present invention relates to a so-called sealingless outer wall structure (hereinafter referred to as a “sealingless structure”) in which no sealing is provided at joints between adjacent outer wall materials, and these outer wall materials are provided in abutment with each other.

  Conventionally, there is a sealingless structure for the purpose of improving design and saving construction.

  Patent Document 1 discloses an example thereof. In this outer wall structure, one back-end scraped portion of a pair of adjacent outer wall materials is joined to the other vertical end surface without step processing, and the back-end facing portion is fixed to a base material. A part of the joining accessory is inserted. Further, a packing material is interposed between the inserted portion of the joining accessory and the back-end scraped portion, and between the inserted portion of the joining accessory and the vertical end surface having no step. Thus, a sealing surface is formed. In this outer wall structure, both the end surface provided with the back-up scraped portion and the other vertical end surface are parallel to the indoor / outdoor direction.

Japanese Patent No. 5279086

  The outer wall structure described in Patent Document 1 provides waterproofness by forming a sealing surface with a joining accessory partially inserted into the back-end scraped portion and the back-end counter-cut portion and the vertical end surface. However, the end surface facing the adjacent outer wall material is parallel to the indoor / outdoor direction. For this reason, when the outer wall material shrinks in size and the joint is opened, there is a problem that a clear shadow is generated on the joint and is noticeable.

  This invention is made | formed in view of the said situation, The place made into the objective is to suppress that a joint is conspicuous in a sealingless structure, maintaining waterproofness.

  An outer wall structure according to an aspect of the present invention is an outer wall structure in which adjacent outer wall materials are provided to face each other, and is disposed on the indoor side of the pair of outer wall materials and straddles a joint between the pair of outer wall materials. The joiner is provided on both sides of the joint so as to be spaced apart from each other, and has a pair of water-stopping materials pressed against the indoor-side surfaces of the pair of outer wall materials. The adjacent end surfaces of the pair of outer wall materials are inclined with respect to the indoor / outdoor direction and are parallel to each other.

  Further, in the outer wall structure, it is preferable that the joiner is provided with a space for flowing water entering from the joint at a portion corresponding to the joint.

  In the outer wall structure, it is preferable that the joiner is bonded to an end portion of the outer wall material on the joint side.

  Further, the outer wall structure further includes an outer wall material attachment for attaching the outer wall material to a wall base, and the joiner has an adhesive installation portion provided with an adhesive, and the adhesive installation portion includes the outer wall material. It is preferable that a space for preventing interference with the fixture is provided.

  According to the outer wall structure of the present invention, in the sealingless structure, it is possible to suppress the water entering from the joint from spreading to the back side of the outer wall material and to suppress the joint from being noticeable.

FIG. 1 is a perspective view in which a part of the outer wall material of the outer wall structure according to one embodiment of the present invention is omitted. FIG. 2 is a perspective view of the above joiner. FIG. 3A is a plan view of the same outer wall plate. FIG. 3B is a front view of the same outer wall plate. FIG. 3C is a side view of the same outer wall plate. FIG. 4A is a plan view of the above-mentioned protruding corner member. FIG. 4B is a front view of the above-mentioned protruding corner member. It is a horizontal sectional view of an outer wall structure same as the above.

  Embodiments of one aspect of the present invention are described below with reference to the accompanying drawings.

  The outer wall structure of the present embodiment includes a wall base 1, a joiner 2 fixed to the wall base 1, and a plurality of outer wall members 4 arranged on the outdoor side of the joiner 2.

  The wall foundation 1 is a portion that becomes the foundation of the outer wall material 4. The wall foundation 1 of the present embodiment includes a column 11 (including an inter-column) and a moisture permeable waterproof sheet (not shown) attached to the outdoor side of the column 11. The wall foundation 1 may have a vertical trunk edge or a horizontal trunk edge. The wall foundation 1 may be a face material in a 2 × 4 construction method.

  The joiner 2 is fixed to the wall base 1. The joiner 2 is disposed along a joint 8 (longitudinal joint) formed between the plurality of outer wall materials 4, thereby preventing rainwater entering through the joint 8 from entering the wall base 1. The joiner 2 is made of a metal material that is long in the vertical direction, and is formed by bending a metal plate. As shown in FIG. 2, the joiner 2 includes a groove portion 21, a pair of water-stopping material holding portions 22 extending in a flange shape from the outdoor side end portion of the groove-shaped portion 21, and a water blocking material holding portion 22. The adhesive installation part 24 extended along the indoor side surface of the outer wall material 4 and the water stop material 23 are provided.

  The groove portion 21 is formed in a U-shaped cross section that is open to the outdoor side. The groove portion 21 is continuous over the entire length of the wall base 1 in the vertical direction. The groove-shaped portion 21 is configured to be disposed at a portion corresponding to the joint 8 of the adjacent outer wall material 4, and receives rainwater that has entered from the joint 8 and serves as a drainage portion that forms a space 21 a that flows downward. It has a function. The groove portion 21 includes a bottom plate portion 211 that is fixed to the wall base 1 and a pair of side plate portions 212 that extend outward from the left and right sides of the bottom plate portion 211.

  The groove portion 21 is attached to the wall base 1 by screwing the bottom plate portion 211 to the wall base 1. Since rainwater flows down to the bottom plate portion 211, it is preferable to use a screw with a water stop function or a water stop washer such as a bonded washer as a fixing tool for screw fixing.

  The water stop material holding portion 22 is a portion that holds the water stop material 23. The pair of water blocking material holding portions 22 extends from the front end portion of the side plate portion 212 in a direction away from each other. The water blocking material holding portion 22 is formed over the entire length of the groove portion 21 in the length direction. A strip-shaped water-stopping material 23 is attached to the surface of the water-stopping material holding portion 22 on the outdoor side.

  The water stop material 23 is made of a soft material such as soft vinyl chloride resin, EPDM, or chloroprene silicon. When the outer wall material 4 is installed on the outdoor side of the joiner 2 in a state where the joiner 2 is attached to the wall base 1, the water blocking material 23 is configured to be in close contact with the indoor side surface of the outer wall material 4. .

  The adhesive installation part 24 extends from the tip of the water blocking material holding part 22 along the indoor side surface of the outer wall material 4. The adhesive installation portion 24 includes a plurality of plate-like portions 25 having a substantially rectangular shape in plan view, and a plurality of cutout portions 26 that partition the plurality of plate-like portions 25.

  When the outer wall material 4 is installed on the outdoor side of the joiner 2 with the adhesive 7 applied to the plate-like portion 25, the adhesive 7 is spread between the plate-like portion 25 and the outer wall material 4. At this time, since the outer wall material 4 and the water stop material 23 are in close contact with each other, when the adhesive 7 is cured in this state, the outer wall material 4 and the water stop material 23 are held in close contact with each other. Moreover, since the adhesive 7 is cured, the side end portion of the outer wall material 4 can be fixed, and the side end portion can be prevented from being lifted. In order to suppress this lifting, the adhesive 7 is preferably an inelastic adhesive.

  The notch portion 26 is located between the plate-like portions 25. The joiner 2 of the present embodiment includes a long cut portion 261 and a short cut portion 262 as the plurality of cut portions 26. The long notch 261 has the same width in the left-right direction as the short notch 262, but is longer in the up-down direction. At the height position corresponding to the long notch portion 261, the joint portion of the outer wall material 4 aligned in the vertical direction is positioned, and the outer wall material attachment 3 is disposed at a position corresponding to the long notch portion 261. The That is, the long notch 261 forms a space for preventing interference with the outer wall material attachment 3. Thereby, even if it forms the adhesive installation part 24 wide and secures the adhesion allowance of the adhesive 7, the interference with the outer wall material fixture 3 and the adhesive installation part 24 can be avoided.

  As shown in FIG. 1, the outer wall material attachment 3 is a member for attaching the outer wall material 4 to the wall base 1. The outer wall material fixture 3 is configured to hold the outer wall material 4 in a state of being separated from the wall base 1, and forms a ventilation layer between the outer wall material 4 and the wall base 1. The outer wall material fixture 3 includes a fixed plate portion 31 that is fixed to the wall base 1 and a support piece 32 that supports the outer wall material 4. The support piece 32 protrudes from the fixed plate portion 31 toward the outdoor side. The support piece 32 is configured to be able to support both the outer wall material 4 disposed below the support piece 32 and the outer wall material 4 disposed above the support piece 32. The outer wall material fixture 3 is attached to positions corresponding to both ends of the outer wall material 4 in the left-right direction.

  The outer wall material 4 is attached via an outer wall material fixture 3 fixed to the wall base 1. The outer wall materials 4 arranged in the left-right direction are joined by abutment and have a so-called sealingless structure. The outer wall structure of this embodiment includes an outer wall plate 5 and a protruding corner member 6 having an L-shaped horizontal section as a plurality of outer wall members 4.

  3A to 3C show the outer wall plate 5 of the present embodiment. The outer wall plate 5 is a rectangular panel material having a width in the vertical direction and a length in the horizontal direction. The outer wall plate 5 of the present embodiment is disposed so that the longitudinal direction is parallel to the left-right direction, and is stretched. The outer wall plate 5 is made of, for example, a ceramic siding material or a metal siding material. As shown in FIG. 3C, a male part 52 is formed at the upper end of the outer wall plate 5. The male part 52 protrudes upward from the upper end surface of the panel body 51. A female real part 53 is formed at the lower end of the outer wall plate 5. The female real part 53 is joined to the male real part 52 of the outer wall plate 5 that is arranged adjacent to the lower side.

  As shown in FIG. 3A, the end surface in the longitudinal direction of the outer wall plate 5 of the present embodiment is inclined with respect to the surface 54 constituting the outer wall surface (the outer surface of the outer wall plate 5), that is, with respect to the indoor / outdoor direction. Is inclined. An angle a formed by the end surface of the outer wall plate 5 of the present embodiment and the outer surface 54 of the outer wall plate 5 is formed at about 45 °. The angle formed by the end surface of the outer wall plate 5 and the outer surface 54 of the outer wall plate 5 is preferably 45 ° or more and less than 90 °, and particularly preferably 45 ° or 60 °.

  As shown in FIG. 4A, the protruding corner member 6 is formed in a substantially L shape in plan view. As shown in FIG. 4B, a male part 62 is formed at the upper end of the protruding corner member 6. The male part 62 protrudes upward from the upper end surface of the protruding corner member main body 61. Further, a female real part 63 is formed at the lower end of the protruding corner member 6. The female real part 63 is jointly joined to the male real part 62 of the protruding corner member 6 that is disposed adjacent to the lower side.

  The end face adjacent to the outer wall plate 5 in the protruding corner member 6 is inclined with respect to the surface 64 constituting the outer wall surface (the outer surface of the protruding corner member 6), that is, inclined in the indoor / outdoor direction. The angle b formed between the end face of the protruding corner member 6 and the outer surface 64 of the protruding corner member 6 of the present embodiment is formed at about 45 °. The angle b formed by the end face of the protruding corner member 6 and the outer surface 64 of the protruding corner member 6 is preferably 45 ° or more and less than 90 °, and particularly preferably 45 ° or 60 °.

  When the outer wall plate 5 and the protruding corner member 6 having such a configuration are attached to the outer wall member fixture 3, the adjacent end surfaces of the outer wall plate 5 and the protruding corner member 6 are parallel to each other as shown in FIG. And inclined with respect to indoor and outdoor directions. In other words, the depth direction of the joint 8 is inclined with respect to the outer wall surface. For this reason, when facing the outer wall surface, the side surface (end surface of the outer wall plate 5) is visible on the back side of the joint 8, and the joint 8 looks shallow, so the joint 8 between the outer wall plate 5 and the protruding corner member 6 is Inconspicuous.

  In the outer wall structure of the present embodiment, the adhesive installation portion 24 of the joiner 2 is bonded to the back surface of the outer wall plate 5 and the protruding corner member 6, so that even if dimensional shrinkage occurs in the outer wall plate 5 or the like, the joint 8 The structure is difficult to spread. However, even if the joint 8 expands due to dimensional shrinkage of the outer wall plate 5 or the like, the side face of the joint 8 can be seen when facing the outer wall surface, so that the joint 8 is suppressed from conspicuous.

  In addition, as shown in FIG. 5, the joiner 2 is arranged so that the groove-shaped portion 21 straddles the joint 8 between the outer wall materials 4 from the indoor side, and the pair of water-stopping material holding portions 22 includes the outer wall plate 5 and The water stop material 23 is held in pressure contact with the protruding corner member 6. For this reason, even if rainwater enters from the joint 8, the rainwater can be received by the groove-shaped portion 21, and the rainwater runs sideways along the indoor side surfaces of the outer wall plate 5 and the protruding corner member 6. However, rainwater can be poured into the groove 21. As a result, even if it is a sealingless structure, it is possible to prevent water from entering the wall substrate 1.

〔effect〕
As described above, the outer wall structure of the present embodiment is an outer wall structure in which the adjacent outer wall materials 4 are provided in contact with each other. The outer wall structure includes a joiner 2 disposed so as to straddle the joint 8 between the pair of outer wall materials 4 from the indoor side. The joiner 2 is disposed on the indoor side of the pair of outer wall members 4 and is disposed so as to straddle the joint 8 between the pair of outer wall members 4. The joiner 2 has a pair of water blocking members 23 that are in pressure contact with the indoor side surfaces of the pair of outer wall members 4. Adjacent end faces of the pair of outer wall materials 4 are inclined with respect to the indoor / outdoor direction and are parallel to each other.

  According to this configuration, when the joint 8 between the pair of outer wall members 4 is viewed from the front side of the outer wall member 4, the joint 8 is deeper because the side surface of the joint 8 is located on the inner side of the joint 8. can not see. For this reason, the joint 8 can be made inconspicuous. Furthermore, since the joiner 2 is arranged so as to straddle the joint 8 on the indoor side of the pair of outer wall materials 4, the water stop material 23 is pressed against each outer wall material 4, so that rainwater entering from the joint 8 is prevented. It can suppress spreading on the back side of the outer wall material 4.

  The outer wall structure of the present embodiment has the following additional configuration. That is, in the outer wall structure of the present embodiment, the joiner 2 is provided with a space 21 a that allows water that enters from the joint 8 to flow downward in a portion corresponding to the joint 8.

  According to this configuration, rainwater that has passed through the joint 8 can be effectively flowed downward, and the rainwater can be further suppressed from spreading to the back side of the outer wall material 4.

  The outer wall structure of the present embodiment has the following additional configuration. That is, in the outer wall structure of the present embodiment, the joiner 2 is bonded to the end portion of the outer wall material 4 on the joint 8 side.

  According to this configuration, it is possible to prevent the adjacent outer wall materials 4 from being separated due to aging shrinkage of the outer wall material 4, and to suppress the conspicuousness of the joint 8. Since the edge part of the adjacent outer wall material 4 can be fixed to the joiner 2, it can suppress that the edge part of the adjacent outer wall material 4 floats up.

  The outer wall structure of the present embodiment has the following additional configuration. That is, the outer wall structure of the present embodiment further includes an outer wall material attachment 3 for attaching the outer wall material 4 to the wall base 1. The joiner 2 has an adhesive installation portion 24 that receives the adhesive 7. The adhesive installation part 24 has a space for preventing interference with the outer wall material fixture 3.

  According to this configuration, even if the outer wall material fixture 3 is arranged, the area of the adhesive installation portion 24 can be widened to ensure a wide bonding allowance with the outer wall material 4. In addition, since the outer wall material 4 is attached by the outer wall material fixture 3 and the joiner 2 fixed to the wall base material 1 is bonded to the back surface of the outer wall material 4, the back surface of the outer wall material 4 and the wall base material The distance between 1 and 1 can be kept even more. For this reason, the compressibility of the water stop material 23 can be maintained, and the fall of water stop can be suppressed.

〔application〕
Although the joiner 2 of the said embodiment had the adhesive agent installation part 24, the adhesive agent installation part 24 does not need to be. In this case, when the dimensional shrinkage of the outer wall material 4 occurs, there is a possibility that the joint width between the plurality of outer wall materials 4 may increase. It can be lost. In addition, since the water stop material 23 is pressed against the back surface of the outer wall material 4, the distance between the joiner 2 and the back surface of the outer wall material 4 does not change even if the outer wall material 4 shrinks. For this reason, there is no influence on the compressibility of the water stop material 23, and it can suppress that water stoppage falls.

  The outer wall structure of the above embodiment includes the outer wall plate 5 and the protruding corner member 6 as the outer wall member 4, but may include a pair of adjacent outer wall plates 5 as the outer wall member 4. That is, the outer wall member 4 is not limited to the outer wall plate 5 and the protruding corner member 6.

  In the outer wall material fixture 3, the ventilation layer is formed between the wall base 1 and the outer wall material 4, but the ventilation layer may not be formed. Further, the ventilation layer may not be formed by the outer wall material fixture 3. For example, the vertical body edge may be hit against the wall base 1 and the ventilation layer may be formed by the vertical body edge. Moreover, the outer wall material attaching tool 3 may not be provided, and the outer wall material 4 may be fixed to the vertical trunk edge via a fixing tool.

  In addition, the configuration of the above-described embodiment can be appropriately modified as long as it does not depart from the gist of the present invention.

2 Joiner 21a Space 23 Water stop material 24 Adhesive installation part 3 Outer wall material fixture 4 Outer wall material 7 Adhesive 8 Joint

Claims (4)

It is an outer wall structure in which adjacent outer wall materials are provided to face each other,
It is arranged on the indoor side of the pair of outer wall materials, and includes a joiner arranged so as to straddle the joint between the pair of outer wall materials,
The joiner is provided on both sides of the joint so as to be separated from each other, and has a pair of water-stopping materials pressed against the indoor-side surfaces of the pair of outer wall materials,
Adjacent end faces of the pair of outer wall materials are inclined with respect to the indoor / outdoor direction and are parallel to each other. 2. The outer wall structure according to claim 1, wherein the joiner is provided with a space for flowing water entering from the joint at a portion corresponding to the joint. The outer wall structure according to claim 1 or 2, wherein the joiner is bonded to an end of the outer wall material on the joint side. Further comprising an outer wall material attachment for attaching the outer wall material to a wall base;
The joiner has an adhesive installation portion on which an adhesive is provided,
The outer wall structure according to claim 3, wherein the adhesive installation portion is provided with a space for preventing interference with the outer wall material attachment.

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