JP6629526B2 - Auxiliary member for exterior wall material and construction structure of exterior wall material - Google Patents

Description

  The present invention relates to an auxiliary member for an outer wall material fixed to a base of a wall and supporting the outer wall material so that the outer wall material can be positioned from below when the outer wall material is installed, and a construction structure of the outer wall material provided with the auxiliary member.

  Patent Literature 1 discloses a vertical tension auxiliary member that supports a lower end portion of a vertical external wall material. The vertical tension assisting member includes a vertical portion fixed to the body edge, and a horizontal locking portion protruding from the lower end of the vertical portion to the outdoor side and supporting the lower end of the outer wall material for vertical tension.

Japanese Utility Model Registration No. 3137021

  By the way, there is a possibility that joints between adjacent vertically extending outer wall materials and rainwater that has flowed around the lower end surface of the vertically extending outer wall material may flow through the vertically extending auxiliary member. Here, the vertical tension auxiliary member disclosed in Patent Document 1 supports the vertical external wall material in a state where the horizontal upper surface of the horizontal locking portion is in surface contact with the lower end surface of the vertical external wall material. For this reason, the rainwater that has flowed into the vertical tension auxiliary member may collect between the upper surface of the horizontal locking portion and the lower end surface of the vertical external wall material, and this water may be absorbed by the vertical external wall material.

  The present invention has been made in view of the above circumstances, and is an outer wall material auxiliary member that supports the outer wall material so that it can be positioned from below when the outer wall material is constructed, and water that accumulates in the auxiliary member is the outer wall material. An object of the present invention is to provide an outer wall material auxiliary member that can be prevented from being absorbed by a material, and a construction structure of the outer wall material provided with the auxiliary member.

  In order to achieve the above object, an exterior wall material auxiliary member of the present invention is an exterior wall material auxiliary member that is attached to a basement of a building and supports the exterior wall material so that it can be positioned from below when the exterior wall material is constructed. A fixing portion fixed to the wall base, a bottom portion protruding from a lower end portion of the fixing portion toward the outdoor side, and a protruding portion protruding upward from an outdoor end portion of the bottom portion, The projecting portion is configured such that an upper edge thereof is in line contact with a lower end surface of the outer wall material.

  Further, the bottom portion is inclined upward from a lower end portion of the fixing portion toward an outdoor side, and a portion including a boundary between the bottom portion and the fixing portion has a first portion extending from the bottom portion to the fixing portion. Preferably, a through hole is formed.

  Further, it is preferable that a vertical dimension from a lower end of the fixing portion to the upper edge of the protruding portion is 10 mm or more.

  Further, it is preferable that an angle formed by the fixing portion and the bottom portion is 30 ° or more and 75 ° or less.

  The first through-hole includes a first hole formed in the fixing portion, and a second hole formed in the bottom portion and continuous with the first hole, wherein the second hole is formed. It is preferable that the dimension of the bottom in the inclination direction is larger than the vertical dimension of the first hole.

  Further, it is preferable that a second through-hole is formed in a portion of the fixing portion above the first through-hole.

  Further, the construction structure of the outer wall material of the present invention is a construction structure of the outer wall material in which the outer wall material is constructed using the outer wall material auxiliary member described above, wherein the fixing portion of the outer wall material auxiliary member is a wall. The projection is attached to a base, and an upper edge of the protruding portion is in line contact with a lower end surface of the outer wall material.

  In addition, a water drain fixed to the wall base and provided below the outer wall material auxiliary member is provided. The water drain is inclined downward toward the outdoor side, and discharges water flowing on the upper surface to the outdoor side. It is preferable that a lower end of the fixing portion of the outer wall material auxiliary member be provided in contact with the upper surface of the water receiving portion.

  In addition, the wall base has a plurality of horizontal body edges on the outdoor side, the horizontal body edge has ventilation means, and the fixing portion has a structure in which the second through hole is located below a predetermined horizontal body edge. The space which is fixed to the predetermined lateral body edge so as to be located at the position and which is surrounded by the fixing part, the predetermined horizontal body edge and the water receiving part and communicates with the second through hole is a house of the outer wall material. It is preferable to communicate with the ventilation layer formed inside through the ventilation means.

  In the auxiliary member for an outer wall material according to the present invention, since the upper edge of the protrusion is in line contact with the lower end surface of the outer wall material, rainwater flowing from the outer wall material stays between the outer wall material and the protrusion of the auxiliary member. Hateful. Therefore, the outer wall material is less likely to be wet by the rainwater accumulated between the outer wall material and the auxiliary member.

FIG. 1 is a cross-sectional view of an external wall material construction structure using an external wall material auxiliary member according to an embodiment of the present invention. FIG. 2 is a sectional view taken along line AA of FIG. 1. FIG. 3 is an enlarged view of a portion B in FIG. 4A is a front view of the outer wall member auxiliary member, FIG. 4B is a side view of the outer wall member auxiliary member, and FIG. 4C is a plan view of the outer wall member auxiliary member. It is a front view of the auxiliary member for exterior wall materials of other examples of embodiment. It is a perspective view for explaining the ventilation path in the construction structure of the outer wall material of the embodiment of the present invention. 7A to 7D are side views of an outer wall material auxiliary member of a modified example.

  Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. FIG. 1 shows a construction structure of an outer wall material using an outer wall material auxiliary member (outer wall material support member) 1 of the present embodiment. This outer wall structure includes a wall base 2, an auxiliary member 1, and an outer wall material 3 provided in a building. In the following, the auxiliary member 1 for outer wall material is simply referred to as “auxiliary member 1”. In addition, hereinafter, the outdoor direction indicated by an arrow D1 in FIG. 1 will be described as the front, and the indoor direction indicated by an arrow D2 will be described as the rear.

  The wall base 2 of the present embodiment includes a base 20, a plurality of pillars 21, a moisture-permeable waterproof sheet 22, and a plurality of horizontal rims 23.

  The base 20 is provided on a foundation 60. As shown in FIG. 2, on the base 20, the plurality of column members 21 are provided side by side in the left-right direction (the longitudinal direction of the base 20), and each column member 21 is supported by the base 20. Note that each pillar 21 may be a tubular pillar, a through pillar, or a stud.

  As shown in FIG. 1, the construction of the outer wall material according to the present embodiment includes a drainer (base drainer) 4. FIG. 3 is an enlarged view of a portion B in FIG. The drainer 4 includes a plate-shaped fixing portion 40 arranged along the front surface of the base 20, a plate-shaped water receiving portion 41 protruding forward from a lower end of the fixing portion 40, and a front end of the water receiving portion 41. And a plate-shaped draining portion 42 protruding downward from the portion (outside end).

  The fixing portion 40 is fixed to the base 20 from the outdoor side using a fixing tool such as a screw or a nail, and thereby the drainer 4 is attached to the wall foundation 2.

  As shown in FIG. 1, a moisture-permeable waterproof sheet 22 is provided on a front surface of a base base 24 including a base 20 and the plurality of pillars 21. The lower end of the moisture-permeable waterproof sheet 22 is provided so as to be located in front of the fixing portion 40 of the drainer 4.

  As shown in FIG. 3, the water receiving portion 41 of the drainer 4 is located on the foundation 60, and its front end protrudes more outdoors than the front surface of the foundation 60. The draining part 42 of the drainer 4 covers the front of the upper end of the foundation 60.

  As shown in FIG. 1, the horizontal torso edges 23 are arranged in a plurality of rows in the vertical direction on the outdoor side of the foundation base 24 (the base 20 and the plurality of pillars 21). In other words, the wall base 2 of the present embodiment includes a plurality of rows of horizontal trunk lines provided in a line in the left-right direction in the vertical direction.

  Each horizontal waist edge 23 of the lower horizontal waist edge row is disposed along the front surface of the base 20 via the moisture-permeable waterproof sheet 22, and is fixed to the base 20 from the outdoor side using a fixing tool such as a screw or a nail. Installed. In addition, each of the horizontal torso edges 23 of the horizontal torso edge row other than the lowermost row is disposed along the front surface of the plurality of column members 21 via the moisture-permeable waterproof sheet 22, and using a fixing tool such as a screw or a nail, It is attached to a plurality of pillars 21 from the outdoor side.

  As shown in FIG. 2, ventilation gaps 25 are formed between the horizontal body edges 23 arranged in the left-right direction in each horizontal body edge row. Each ventilation gap 25 is ventilation means for connecting the upper part and the lower part of each horizontal trunk line. The ventilation means is not limited to the ventilation gap 25, and may be, for example, a hole or a notch vertically penetrating the horizontal body edge 23 having substantially the same length as the entire wall instead of the horizontal body edge row arranged in the left-right direction. You may.

  As shown in FIG. 1, the auxiliary member 1 of the present embodiment is used at the time of starting to stretch the outer wall material 3. In addition, the auxiliary member 1 is provided not only between the base portions of the building but also, for example, between two outer wall materials 3 that are vertically arranged between a predetermined floor of a building of two or more floors and a floor above the building, When constructing the upper outer wall material 3, the upper outer wall material 3 may be supported so as to be positionable from below.

  4A to 4C are a front view, a side view, and a plan view of the auxiliary member 1 of the present embodiment. The auxiliary member 1 is made of metal. Specifically, the auxiliary member 1 is formed from a galvalume steel plate (registered trademark). In addition, the auxiliary member 1 may be formed from other materials such as a steel plate and a galvanized steel plate.

  The auxiliary member 1 is a long member extending in the left-right direction. The thickness (plate thickness) of the auxiliary member 1 is preferably 0.35 mm or more and 1.2 mm or less, and is 0.8 mm in the present embodiment.

  As shown in FIG. 3, the auxiliary member 1 includes a fixed portion 10 arranged along the front surface of a predetermined horizontal torso edge 23 (in the illustrated example, the lowermost horizontal torso edge 23), and a lower end of the fixed portion 10. A bottom portion 11 protruding forward from the portion, and a protruding portion 12 projecting upward from a front end of the bottom portion 11 in parallel with the fixing portion 10 and in line contact with the lower end surface of the outer wall material 3.

  The auxiliary member 1 has a groove 13 opened upward. The groove 13 includes a protruding portion 12, a bottom portion 11, and a lower end portion of the fixed portion 10 facing the protruding portion 12.

  The fixing portion 10 is formed in a rectangular plate shape having a thickness direction parallel to the front-back direction and extending in the left-right direction. The fixing portion 10 is fixed to the lowermost row of the horizontal torso edge 23 and the base 20 from the outdoor side using a fixing tool 61 such as a nail or a screw. Thereby, the auxiliary member 1 is attached to the wall foundation 2. The fixing tool 61 of the present embodiment is fixed to the base 20 by sequentially passing through the horizontal torso edge 23, the moisture-permeable waterproof sheet 22, and the fixing portion 40 of the drainer 4 from the outdoor side, but only to the horizontal torso edge 23. It may be fixed. Further, the auxiliary member 1 of the present embodiment is formed with a hole 70 for passing the fixing tool 61 through the fixing portion 10, but the hole 70 may be omitted. In this case, the fixing tool 61 penetrates the fixing part 10 by being driven into the fixing part 10.

  The bottom portion 11 is formed in a rectangular plate shape protruding forward from a lower end portion of the fixed portion 10, and is formed over the entire length of the fixed portion 10 in the left-right direction.

  The bottom 11 is inclined upward from the lower end of the fixing part 10 toward the front (outdoor side). It is preferable that the angle θ formed by the fixing portion 10 and the bottom portion 11 is set to 30 ° or more and 75 ° or less. The angle θ in the present embodiment is 60 °.

  The lower end of the fixing part 10 (the lower end of the boundary 14 between the bottom part 11 and the fixing part 10) is in contact with the upper surface of the water receiving part 41 of the drainer 4. For this reason, when the worker attaches the auxiliary member 1 to the wall base 2, the vertical position of the auxiliary member 1 can be determined such that the lower end of the fixing portion 10 contacts the upper surface of the water receiving portion 41.

  As shown in FIGS. 4A to 4C, a plurality of first through holes 15 are provided in a portion including a boundary 14 between the bottom portion 11 and the fixing portion 10 in the left-right direction. Each of the first through holes 15 functions as a drain hole that penetrates the auxiliary member 1 and drains rainwater that has entered the groove 13.

  Each first through-hole 15 is formed from the fixing part 10 to the bottom part 11 as shown in FIG. However, each first through hole 15 is not formed in the protruding portion 12. For this reason, each of the first through holes 15 is less noticeable when viewed from the outdoor side. Specifically, each first through hole 15 is formed from a rear end to a front end of the bottom 11 and a first hole 16 formed at a lower end of the fixing portion 10. It is composed of a lower end and a continuous second hole portion 17.

  As described above, the bottom 11 of the present embodiment is inclined upward toward the outdoor side (front), that is, inclined downward toward the indoor side (rear). Further, the angle formed between the fixed portion 10 and the bottom portion 11 is set to 75 ° or less. For this reason, when rainwater flows into the bottom 11, the rainwater smoothly flows along the upper surface of the bottom 11 to the lower end, and is then discharged from the first through-hole 15.

  The angle formed between the fixed portion 10 and the bottom portion 11 is set to 30 ° or more. For this reason, even if rainwater accumulates in the groove 13, the rainwater is unlikely to rise due to surface tension, so that the outer wall material 3 is hardly wet.

  In addition, although the first through hole 15 of the present embodiment has a rectangular shape, the shape is not particularly limited.

  As shown in FIG. 3, each first through-hole 15 has a dimension L2 in the tilt direction of the bottom 11 of the second hole 17 larger than the vertical dimension L1 of the first hole 16. The upper edge of the second hole 17 is located higher than the upper edge of the first hole 16. For this reason, when rainwater in the groove 13 enters, the rainwater is easily discharged from the first through-hole 15 to the outside. In the present embodiment, the dimension L1 of the first hole 16 is 4 mm, and the dimension L2 of the second hole 17 is 9.5 mm.

  As shown in FIG. 3 and FIG. 4A, a second through-hole (vent) 18 is provided in the fixing portion 10 of the auxiliary member 1 at a portion protruding below the lowermost horizontal torso edge 23 in the left-right direction. Are formed. Each second through hole 18 is located above each first through hole 15.

  The space 51 surrounded by the fixing portion 10 of the auxiliary member 1, the lowermost horizontal waist edge 23, and the water receiving portion 41 communicates with the plurality of second through holes 18. Thus, the space 51 communicates with the inside of the groove 13 of the auxiliary member 1 via the plurality of second through holes 18.

  The second through hole 18 of the present embodiment is formed at a position different from the first through hole 15 in the left-right direction, and portions of the auxiliary member 1 whose strength is reduced by the hole processing are dispersedly arranged. . Note that the second through-hole 18 and the first through-hole 15 may be formed at the same position in the left-right direction. Further, the second through-hole 18 of the present embodiment is formed in a rectangular shape, but may have another shape. FIG. 5 shows an example in which the circular second through hole 18 is provided in the auxiliary member 1.

  As shown in FIGS. 3 and 4A, the protruding portion 12 of the auxiliary member 1 protrudes vertically upward from the front end of the bottom portion 11, and is formed in a rectangular plate shape parallel to the fixing portion 10. The protrusion 12 is formed over the entire length of the bottom 11 in the left-right direction.

  The protruding portion 12 has an upper edge 19 that is in line contact with the lower end surface of the outer wall material 3. The upper edge 19 of the present embodiment is a horizontal upper end surface of the protrusion 12. Note that the upper edge 19 may be an upper end surface inclined with respect to the horizontal.

  The upper edge 19 of the protruding portion 12 is located below the upper edge of the fixing portion 10. The vertical dimension L3 from the lower end of the fixing portion 10 of the auxiliary member 1 to the upper edge 19 of the projecting portion 12 is 10 mm or more, and a relatively large interval is provided between the upper edge 19 and the lower end of the fixing portion 10. Can be. For this reason, even if rainwater accumulates in the groove 13 of the auxiliary member 1, the rainwater hardly contacts the outer wall material 3 supported by the upper edge 19 of the protrusion 12. The vertical dimension L3 of this embodiment is set to 13 mm.

  The outer wall material 3 of the present embodiment is a vertically extending outer wall material that is provided vertically with respect to the wall foundation 2. Note that the outer wall material 3 may be an outer wall material for horizontal stretching.

  As shown in FIG. 2, a plurality of outer wall members 3 are arranged in the left-right direction along the front surfaces of a plurality of upper and lower horizontal trunk rows. As the outer wall material 3, for example, ceramic siding is used. The outer wall material 3 may be another conventionally known outer wall material 3 such as a metal siding or a wooden siding.

  As shown in FIG. 1, each outer wall member 3 is driven by a plurality of fasteners 62 such as screws or nails from the outdoor side while being placed on the upper edge 19 of the protruding portion 12 of the auxiliary member 1. By fixing the tool 62 to the horizontal waist edge 23, the tool 62 is attached to the wall foundation 2. Further, the outer wall members 3 adjacent to each other in the left-right direction are jointed with each other as shown in FIG.

  Note that each outer wall material 3 may be attached to the wall base 2 using a fastener or the like instead of the fixing tool 62. Further, in a state where each outer wall material 3 is attached to the wall base 2, the load of each outer wall material 3 may or may not be supported by the auxiliary member 1. That is, the auxiliary member 1 only needs to support at least the outer wall material 3 so that it can be positioned from below when the outer wall material 3 is constructed.

  As shown in FIG. 1, a ventilation layer (ventilation space) 50 is provided between the exterior wall material 3 and the moisture-permeable waterproof sheet 22 attached to the indoor side of the exterior wall material 3, specifically, the front surface of the base 24. Is formed. In the ventilation layer 50, a plurality of horizontal trunk rows are arranged. As described above, each horizontal trunk row is provided with the ventilation gap 25 (see FIG. 2) penetrating vertically. Therefore, the ventilation layer 50 is a continuous space in the vertical direction.

  The ventilation layer 50 is arranged in this order through the space 51 between the lowermost row of the lateral rim 23 and the water receiving portion 41 of the drainer 4, the plurality of second through holes 18, and the plurality of first through holes 15. The outer wall material 3 communicates with the outdoor space, and is ventilated as shown by the arrow in FIG. Therefore, the first through hole 15 also functions as a vent.

  By the way, as shown in FIG. 2, when rainwater enters the joint 52 formed between the outer wall materials 3 adjacent in the left-right direction, the rainwater flows down along the joint 52 and flows to the auxiliary member 1. Could be reached. Also, rainwater that has flowed down the front surface of the outer wall material 3 may wrap around the lower end surface of the outer wall material 3 and reach the auxiliary member 1. When rainwater flows through the auxiliary member 1 in this manner, rainwater accumulates between the outer wall member 3 and the auxiliary member 1, and the rainwater may touch the outer wall member 3.

  Here, in the auxiliary member 1 of the present embodiment, as shown in FIG. 3, only the upper edge 19 of the protrusion 12 is in contact with the outer wall material 3, and the upper edge 19 (the upper end surface of the protrusion 12) Is in line contact with the lower end surface of the outer wall material 3 (in a linear manner). For this reason, the contact area of the auxiliary member 1 with the outer wall member 3 is extremely small, so that the rainwater flowing from the outer wall member 3 hardly stays between the outer wall member 3 and the auxiliary member 1.

  The drainer 4 receives rainwater dropped from the front or lower end surface of the outer wall material 3 and rainwater discharged from the first through hole 15 of the auxiliary member 1 on the upper surface of the water receiving portion 41. The rainwater flows to the outdoor side along the upper surface of the inclined water receiving portion 41, travels along the front surface of the drainage portion 42, and then falls from the lower edge of the drainage portion 42.

  Here, the lower end of the fixing portion 10 of the auxiliary member 1 (the boundary 14 between the fixing portion 10 and the bottom portion 11) is in contact with the upper surface of the water receiving portion 41. For this reason, the rainwater existing near the first through hole 15 is likely to be brought into contact with the rainwater on the water receiving portion 41 and pulled toward the water receiving portion 41. Therefore, the rainwater staying in the vicinity of the first through hole 15 is easily discharged.

  Further, each first through hole 15 is formed from the bottom 11 of the auxiliary member 1 to the fixing part 10. For this reason, even if rainwater infiltrates into the ventilation layer 50 between the outer wall material 3 and the wall foundation 2, even if the rainwater flows over a portion of the water receiving portion 41 on the indoor side with respect to the auxiliary member 1, The rainwater is discharged to the outside through a first hole 16 formed in the fixing portion 10 and a second hole 17 formed in the bottom 11.

  The auxiliary member 1 of the present embodiment described above has the following features. The auxiliary member 1 is an auxiliary member that is attached to a wall base 2 of a building and supports the outer wall material 3 from below when positioning the outer wall material 3. The auxiliary member 1 includes a fixing part 10 fixed to the wall base 2, a bottom part 11 protruding from the lower end of the fixing part 10 toward the outdoor side, and a protruding part protruding upward from the outdoor end of the bottom part 11. Unit 12. The protrusion 12 is configured such that the upper edge 19 is in line contact with the lower end surface of the outer wall material 3.

  The auxiliary member 1 having this feature is configured such that the upper edge 19 of the protrusion 12 is in line contact with the lower end surface of the outer wall material 3. For this reason, between the outer wall material 3 and the protruding portion 12 of the auxiliary member 1, the rainwater flowing from the outer wall material 3 does not easily stay. Thereby, the outer wall member 3 is less likely to be wet by the rainwater accumulated between the outer wall member 3 and the auxiliary member 1.

  Further, the auxiliary member 1 of the present embodiment has the following additional features. The bottom portion 11 is inclined upward from the lower end portion of the fixing portion 10 toward the outdoor side. A first through hole 15 is formed in a portion including the boundary 14 between the bottom portion 11 and the fixing portion 10 from the bottom portion 11 to the fixing portion 10.

  In the auxiliary member 1 having this feature, rainwater that has entered between the protruding portion 12 and the fixing portion 10 is discharged from the first through hole 15. For this reason, it is difficult for rainwater to collect between the protruding portion 12 and the fixing portion 10, and the outer wall material 3 is more difficult to get wet. Further, since the first through-hole 15 is formed from the bottom 11 to the fixing part 10, when viewed from the outdoor side, compared with the case where the first through-hole 15 is formed only in the bottom 11, The first through-hole 15 becomes less noticeable, and the opening area of the first through-hole 15 is increased, so that drainage of rainwater between the protrusion 12 and the fixing part 10 can be improved.

  Further, the auxiliary member 1 of the present embodiment has the following additional features. The vertical dimension L3 from the lower end of the fixing part 10 to the upper edge 19 of the protruding part 12 is 10 mm or more.

  Even if rainwater accumulates between the protruding portion 12 and the fixing portion 10, the auxiliary member 1 having this characteristic is likely to be located downward and away from the outer wall material 3. For this reason, the outer wall material 3 supported from below by the upper edge 19 of the protruding portion 12 is more difficult to wet.

  Further, the auxiliary member 1 of the present embodiment has the following additional features. The angle θ formed by the fixing portion 10 and the bottom portion 11 is 30 ° or more and 75 ° or less.

  Here, if the angle formed by the fixing portion 10 and the bottom portion 11 is small, the water level of the rainwater accumulated between the protruding portion 12 and the fixing portion 10 tends to rise, and the outer wall material 3 may be wet with the rainwater. As described above, when the angle θ formed between the fixing portion 10 and the bottom portion 11 is 30 ° or more, the rainwater accumulated between the protrusion 12 and the fixing portion 10 is prevented from rising due to surface tension. For this reason, the outer wall material 3 is more difficult to wet. When the angle θ between the fixing portion 10 and the bottom portion 11 is 75 ° or less, rainwater on the bottom portion 11 easily flows toward the first through hole 15 due to the inclination of the bottom portion 11. For this reason, the rainwater collected between the protruding portion 12 and the fixing portion 10 is also easily discharged.

  Further, the auxiliary member 1 of the present embodiment has the following additional features. The first through-hole 15 has a first hole 16 formed in the fixing portion 10 and a second hole 17 formed in the bottom 11 and continuous with the first hole 16. The dimension L2 of the bottom 11 of the second hole 17 in the tilt direction is larger than the vertical dimension L1 of the first hole 16.

  In the auxiliary member 1 having this feature, since the dimension L2 of the second hole 17 is larger than the dimension L1 of the first hole 16, rainwater between the protrusion 12 and the fixing part 10 is easily discharged to the outside. And smooth drainage can be realized.

  Further, the auxiliary member 1 of the present embodiment has the following additional features. A second through hole 18 is formed in a portion of the fixing portion 10 above the first through hole 15.

  The auxiliary member 1 having this feature can ventilate through the first through hole 15 and the second through hole 18.

  The construction structure of the outer wall material according to the present embodiment has the following features. This is a construction structure of the outer wall material on which the outer wall material 3 is constructed using the auxiliary member 1 described above. The fixing part 10 of the auxiliary member 1 is attached to the wall foundation 2. The upper edge 19 of the protrusion 12 is in line contact with the lower end surface of the outer wall material 3.

  In the construction structure of the outer wall material having this feature, since the upper edge 19 of the protrusion 12 of the auxiliary member 1 is in line contact with the lower end surface of the outer wall material 3, the outer wall material 3 and the protrusion 12 of the auxiliary member 1 In addition, rainwater flowing from the outer wall material 3 is less likely to stay. For this reason, it becomes difficult for the outer wall member 3 to get wet with rainwater accumulated between the outer wall member 3 and the auxiliary member 1.

  The construction structure of the outer wall material according to the present embodiment has the following additional features. The construction structure of the outer wall material includes a drainer fixed to the wall base 2 and provided below the auxiliary member 1. The drainer 4 includes a water receiving portion 41 that is inclined downward toward the outdoor side and discharges water flowing on the upper surface to the outdoor side. The lower end of the fixing portion 10 of the auxiliary member 1 contacts the upper surface of the water receiving portion 41.

  The construction structure of the outer wall material having this feature is such that when the worker attaches the auxiliary member 1 to the wall foundation 2, the lower end of the fixing portion 10 of the auxiliary member 1 is in contact with the upper surface of the water receiving portion 41. Can be positioned vertically. For this reason, the auxiliary member 1 can be easily attached to the wall base 2.

  The construction structure of the outer wall material according to the present embodiment has the following additional features. The wall base 2 has a plurality of horizontal waist edges 23 on the outdoor side, and the horizontal waist edges 23 have ventilation means (gap 25 for ventilation). The fixing portion 10 is fixed to the predetermined horizontal body edge 23 such that the second through hole 18 is located below the predetermined horizontal body edge 23 (the lowermost horizontal body edge 23). A space 51, which is surrounded by the fixed portion 10, the predetermined lateral waist edge 23 and the water receiving portion, and communicates with the second through-hole 18, is provided to the ventilation layer 50 formed on the indoor side of the outer wall material 3 through ventilation means. It is characterized by communicating.

  In the construction structure of the outer wall material having this feature, the ventilation layer 50 formed on the indoor side of the outer wall material 3 includes the ventilation means, the space 51, the second through hole 18, and the first through hole of the horizontal body edge 23. The ventilation layer 50 is ventilated by communicating with the outside through the hole 15.

  7A to 7D show modifications of the auxiliary member 1. In the auxiliary member 1 shown in FIG. 7A, the angle θ formed between the fixed portion 10 and the bottom portion 11 is 30 °. In the auxiliary member 1 shown in FIG. 7B, the angle θ between the fixed portion 10 and the bottom portion 11 is 75 °. In the auxiliary member 1 shown in FIG. 7C, the bottom 11 is formed in an arc-shaped cross section. Further, the protruding portion 12 is continuous with the bottom portion 11, and no boundary line with the bottom portion 11 appears. In the auxiliary member 1 shown in FIG. 7D, the vertical length of the protruding portion 12 is shorter than the auxiliary member 1 of the embodiment. Other configurations of the auxiliary member 1 shown in FIGS. 7A to 7D are the same.

  In addition, the construction structure of the auxiliary member 1 and the outer wall material of the present embodiment can be appropriately changed in design without departing from the gist of the present invention.

θ Angle between the fixing part and the bottom part 1 Auxiliary member for outer wall material 10 Fixing part 11 Bottom part 12 Projecting part 14 Boundary 15 First through hole 18 Second through hole 19 Top edge 2 Wall base 23 Horizontal trunk edge 25 Ventilation gap 3 Exterior wall material 4 Drainer 41 Water receiving part 50 Vent layer

Claims (8)

An outer wall material auxiliary member that is attached to a wall base of a building and supports the outer wall material so that it can be positioned from below when constructing the outer wall material,
A fixing portion fixed to the wall foundation,
A bottom protruding from the lower end of the fixing portion toward the outdoor side,
A projection protruding upward from the outdoor end of the bottom,
The protrusion is configured such that an upper edge is in line contact with a lower end surface of the outer wall material ,
The bottom portion is inclined upward from a lower end portion of the fixing portion toward an outdoor side,
An auxiliary member for an outer wall material , wherein a first through hole is formed in a portion including a boundary between the bottom portion and the fixing portion, from the bottom portion to the fixing portion . The auxiliary member for an outer wall material according to claim 1, wherein a vertical dimension from a lower end of the fixing portion to the upper edge of the protrusion is 10 mm or more. The auxiliary member for an outer wall material according to claim 1 or 2, wherein an angle formed by the fixing portion and the bottom portion is 30 ° or more and 75 ° or less. The first through hole,
A first hole portion formed in the fixing portion;
A second hole formed in the bottom portion and continuous with the first hole;
The auxiliary member for an outer wall material according to any one of claims 1 to 3, wherein a size of the second hole in the inclined direction of the bottom is larger than a vertical size of the first hole. The auxiliary | assistant for exterior wall materials as described in any one of Claims 1-4 in which the 2nd through-hole is formed in the part above the said 1st through-hole of the said fixing | fixed part. Element. An outer wall material construction structure in which an outer wall material is constructed using the outer wall material auxiliary member according to any one of claims 1 to 5,
The fixing portion of the outer wall material auxiliary member is attached to a wall base,
An outer wall material construction structure, wherein an upper edge of the protruding portion is in line contact with a lower end surface of the outer wall material. A drainer fixed to the wall base and provided below the outer wall material auxiliary member,
The drainer is
Includes a water receiving part that slopes downward toward the outdoor side and discharges water flowing on the upper surface to the outdoor side,
The construction structure of an outer wall material according to claim 6, wherein a lower end of the fixing portion of the outer wall material auxiliary member is in contact with the upper surface of the water receiving portion. The wall base has a plurality of horizontal body edges on the outdoor side, and the horizontal body edge has ventilation means,
The fixing portion is fixed to the predetermined horizontal body edge such that a second through hole formed in a portion of the fixing portion above the first through hole is located below the predetermined horizontal body edge. ,
A space surrounded by the fixing portion, the predetermined lateral trunk edge and the water receiving portion and communicating with the second through-hole is provided to the ventilation layer formed on the indoor side of the outer wall material through the ventilation means. The construction of an outer wall material according to claim 7, wherein the construction is in communication.

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