JP3654829B2 - Wall structure in the ventilation structure in the wall - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a wall structure in an in-wall ventilation method in which a ventilation layer is provided between an outer wall panel and an inner wall portion constituting a wall body for ventilation.
[0002]
[Prior art]
In homes and the like, indoor air that contains a lot of water vapor tries to flow outside through the wall, but some of the air is blocked by the outer wall panel and stops inside the wall, which is the temperature difference between indoor and outdoor Condensation by And this dew adheres to a heat insulating material, the heat insulation performance falls, or it adheres to the pillar of an inner wall part, etc., and it has decayed. As a countermeasure, dew condensation in the wall body is prevented by a so-called ventilation construction method in which a ventilation layer is provided between the outer wall panel and the inner wall portion for ventilation.
[0003]
[Problems to be solved by the invention]
In the ventilation construction method, the vertical trunk edge is disposed in the ventilation layer, and a starter for receiving the lower end portion of the outer wall panel is fixed to the vertical trunk edge. Also, a ventilation gap is provided between the starter and the drainer provided on the foundation, and outside air flows into the ventilation layer from this ventilation gap.
[0004]
For this reason, there was a problem in that rainwater entered from the ventilation gap wets the lower end of the vertical trunk edge and the vertical trunk edge decays. In addition, in order to prevent condensation within the wall, it is necessary to allow sufficient outside air to flow into the ventilation layer, but the vertical width of the ventilation gap allows rainwater to enter the wall from the ventilation gap. In order to prevent this, it is set as small as about 7 mm, and there is a problem that it is not easy to align the position of the starter in the height direction according to this.
[0005]
In this case, it is conceivable to separately provide a member for waterproofing at the lower end of the vertical trunk edge and a member for positioning in the height direction of the starter, but this is because the number of members increases, There is a problem in that it takes time and effort to manage the members as the work is increased.
[0006]
An object of the present invention is to obtain a wall structure in a ventilation structure in a wall that can prevent the vertical trunk edge in the ventilation layer from getting wet and decay with a single member, and can also position the starter in the height direction. is there.
[0007]
[Means for Solving the Problems]
The wall structure in the in-wall ventilation construction method targeted by the present invention is provided with a ventilation layer 4 between the outer wall panel 2 and the inner wall portion 3, and a starter 5 for receiving the lower end portion of the outer wall panel 2 and the foundation 7. A ventilation gap 9 is provided between the drainage 8 extending from the inner wall portion 3 side to the outside of the outer wall panel 2 along the upper surface, and the ventilation gap 9 and the ventilation layer 4 are communicated with each other. Is fixed to the inner wall portion 3 in a state of being disposed in the ventilation layer 4, and the starter 5 is fixed to the vertical trunk edge 6.
[0008]
A water shielding plate 11 is disposed below the vertical trunk edge 6. The water shielding plate 11 is fixed to the inner wall portion 3 by extending upward from the water shielding portion 11b facing the lower end surface of the vertical trunk edge 6 and the inner wall portion 3 side end of the water shielding portion 11b. The fixed portion 11a, the height positioning portion 11d extending downward from the end on the inner wall 3 side of the water shielding portion 11b, and the starter 5 extending outward from the end on the outer wall panel 2 side of the water shielding portion 11b. And a receiving portion 11c for receiving the lower end surface 5b of the. The water shielding plate 11 is fixed in a state where the lower end of the height positioning portion 11 d is in contact with the drainer 8.
[0009]
More specifically, the lower end surface 5b of the starter 5 has a downward slope that becomes lower toward the outside of the outer wall panel 2. On the other hand, the receiving portion 11 c of the water shielding plate 11 is inclined downward according to the inclination of the lower end surface 5 b of the starter 5. Further, the lateral width W1 of the water shielding plate 11 is made larger than the lateral width W2 of the vertical trunk edge 6.
[0010]
[Effects of the invention]
In the wall structure in the wall ventilation structure according to the present invention, the fixing portion of the water shielding plate 11 in a state where the lower end of the height positioning portion 11d of the water shielding plate 11 is in contact with the drainer 8 (state of FIG. 1). 11 a is fixed to the inner wall 3. Under the present circumstances, the lower end surface of the vertical trunk edge 6 is made to face the water shielding part 11b of the water shielding board 11. FIG. Next, the starter 5 is fixed to the vertical trunk edge 6 in a state where the lower end surface 5 b of the starter 5 is received by the receiving portion 11 c of the water shielding plate 11. Thereafter, the lower end of the outer wall panel 2 is received by the starter 5 to hold the outer wall panel 2.
[0011]
Thus, the water shielding plate 11 can shield the vertical trunk edge 6 from rain water and the like that has entered the ventilation layer 4 from the ventilation gap 9, and can reliably prevent the vertical trunk edge 6 from getting wet and decaying. Moreover, since the water shielding plate 11 can position the starter 5 in the height direction with respect to the drainer 8, the width in the vertical direction of the ventilation gap 9 formed between the starter 5 and the drainer 8 is set appropriately.
[0012]
Therefore, outside air can be sufficiently sent from the ventilation gap 9 into the ventilation layer 4 without providing other ventilation holes, and condensation in the wall 1 can be reliably prevented. In addition, since the position of the starter 5 in the height direction with respect to the drainer 8 is determined by the water shielding plate 11 disposed at each vertical body edge 6, only the horizontal level of the drainer 8 is set, and an appropriate horizontal level of the outer wall panel 2 is determined. You can get the level reliably. In addition, since only the water shielding plate 11 needs to be arranged, workability is improved.
[0013]
And since the water shielding effect and the positioning effect in the height direction of the starter 5 can be obtained by one water shielding plate 11, the number of members can be reduced, the construction cost can be reduced, and reliable. A ventilation construction method can be implemented.
[0014]
When the lower end surface 5b of the starter 5 is downwardly inclined and the receiving portion 11c of the water shielding plate 11 is downwardly inclined according to the inclination of the lower end surface 5b of the starter 5, the lower end surface 5b of the starter 5 is In addition to preventing rainwater from entering the indoor side, the receiving portion 11c of the water shielding plate 11 can surely come into surface contact with the lower end surface 5b of the starter 5, and the receiving portion 11c of the water shielding plate 11 allows the starter 5 to move. It can be taken accurately.
[0015]
When the horizontal width W1 of the water shielding plate 11 is larger than the horizontal width W2 of the vertical trunk edge 6, rainwater or the like that has entered the ventilation layer 4 from the ventilation gap 9 is below the vertical trunk edge 6 from the lateral direction of the vertical trunk edge 6. It can be reliably prevented from falling on the end surface or the lower peripheral surface.
[0016]
DETAILED DESCRIPTION OF THE INVENTION
1 to 4 exemplify a wall structure in a wall ventilation structure according to the present invention. As shown in FIG. 1, the wall body 1 includes an outer wall panel 2 and an inner wall portion 3, and a ventilation layer 4 is provided between the outer wall panel 2 and the inner wall portion 3.
[0017]
The outer wall panel 2 has a structure in which a heat insulating material 2a such as a gypsum board is covered with a metal surface plate 2b. As shown in FIG. 2, the inner wall portion 3 includes columns 3 a such as inter-columns, and a heat insulating material 3 b made of glass wool, a plastic foam plate, or the like disposed between the columns 3 a. A moisture-proof sheet and interior material (not shown) are provided on the indoor side (right side in FIG. 2) of the inner wall 3, and a moisture-permeable waterproof sheet 3 c is provided on the outdoor side of the inner wall 3.
[0018]
The lower end portion of the outer wall panel 2 is received and supported by a starter 5, and the starter 5 is fixed to a vertical trunk edge 6 disposed in the ventilation layer 4. The vertical trunk edge 6 is made of wood, metal, or the like, and is fixed to the column 3a of the inner wall 3 with screws or nails. On the foundation 7 on the lower side of the outer wall panel 2 and the ventilation layer 4, a drainer 8 is disposed, and the drainer 8 is fixed to the column 3 a of the inner wall 3. A vent gap 9 having a predetermined vertical width is provided between the starter 5 and the drainer 8, and the vent gap 9 communicates with the vent layer 4. Then, the outside air flows into the ventilation layer 4 from the ventilation gap 9 so that the inside of the ventilation layer 4 is ventilated. The vertical width of the ventilation gap 9 is, for example, about 7 mm.
[0019]
The surface plate 2b of the outer wall panel 2 has a fitting recess 2c formed by bending the plate surface into a U shape at the lower edge of the panel. The starter 5 is formed by bending a metal plate such as a steel plate. As shown in FIG. 1, the starter 5 extends in the vertical direction and is fixed to the vertical body edge 6 with screws or nails, and the fixing portion 5a. The lower end surface 5b is provided continuously from the lower end to the outdoor side (left side in FIG. 1), and the sealing portion 5c is provided upward from the tip (left end in FIG. 1) of the lower end surface 5b. And the upper part of the sealing part 5c enters into the fitting recessed part 2c of the outer wall panel 2. As shown in FIG. A waterproof packing 2d is disposed at the back of the fitting recess 2c to prevent rainwater from entering the wall 1 from between the outer wall panel 2 and the starter 5. The upper end portion of the fixed portion 5a is bent in a U shape on the outer wall panel 2 side.
[0020]
The lower end surface 5b of the starter 5 has a downward slope that becomes lower toward the outdoor side (outward of the outer wall panel 2), and prevents rainwater that has entered the upper side of the lower end surface 5b from flowing into the indoor side. The lower end of the outer wall panel 2 is received by the upper side of the lower end surface 5b of the starter 5.
[0021]
The drainer 8 is formed by bending a metal plate such as a steel plate. The drainer 8 extends in the vertical direction and is fixed to the column 3a of the inner wall portion 3 with screws or nails, and the lower end of the fixing portion 8a. An inclined surface portion 8b that is continuously provided outside and covers the front upper surface side (upper left side in FIG. 1) of the foundation 7, and a vertical surface portion 8c that is continuously provided downward from the tip of the inclined surface portion 8b and covers the front surface side of the foundation 7. Have That is, the inclined surface portion 8b of the drainer 8 extends from the inner wall portion 3 side toward the outer side of the outer wall panel 2 along the upper surface of the foundation 7, and has a downward inclination that becomes lower toward the outdoor side. Rainwater is drained to the outdoor side. The lower end portion of the vertical surface portion 8c is bent indoors to drain water. The inclined surface portion 8b can also be formed on a stepped inclined surface.
[0022]
A water shielding plate 11 of the present invention is disposed below the vertical trunk edge 6. The water shielding plate 11 is disposed to shield (shield) the vertical trunk edge 6 from rainwater that has entered the ventilation layer 4 from the ventilation gap 9 and to position the starter 5 in the height direction.
[0023]
That is, the water shielding plate 11 is formed by bending a metal plate such as an aluminum plate, as shown in FIG. 3, and extends vertically as shown in FIG. 1 to the pillar 3a of the inner wall 3 such as a screw or a nail. A fixed portion 11a fixed at the bottom, a water-impervious portion 11b connected to the outdoor side from the lower end of the fixed portion 11a, and covering the lower end surface by facing the lower end surface of the vertical trunk edge 6, and a water-impervious portion 11b A receiving portion 11c that is provided on the outdoor side from the front end of the base plate so that the lower end surface 5b of the starter 5 comes into contact with the surface, and a height positioning that extends downward from the lower end of the fixed portion 11a by a predetermined length L (FIG. 3). Part 11d.
[0024]
As shown in FIG. 4, the lateral width W <b> 1 of the water shielding plate 11 is larger than the lateral width W <b> 2 of the vertical trunk edge 6. The receiving portion 11 c of the water shielding plate 11 is inclined downward in accordance with the inclination angle of the lower end surface 5 b of the starter 5. The water shielding plate 11 may be formed of, for example, a synthetic resin.
[0025]
The water shielding plate 11 and the starter 5 are attached as follows. With the inclined surface 8b of the drainer 8 placed on the upper surface of the front portion of the foundation 7, the drainer 8 is fixed to the column 3a of the inner wall 3 and then transparent so as to cover the inner wall 3 and the outer side of the fixed part 8a of the drainer 8. A wet waterproof sheet 3c is attached. Next, in a state where the lower end of the height positioning portion 11 d of the water shielding plate 11 is in contact with the innermost side on the inclined surface portion 8 b of the drainer 8 (the state of FIG. 1), the water shielding plate 11 is placed on the inner wall portion 3. It fixes to the pillar 3a.
[0026]
And the vertical trunk edge 6 is fixed to the pillar 3a of the inner wall part 3 in the state which made the lower end surface of the vertical trunk edge 6 face the upper side of the water shielding part 11b of the water shielding board 11. FIG. In addition, as shown in FIG. 4, the vertical trunk edge 6 is located in the center part of the horizontal direction of the water shielding board 11, and the rain water which penetrate | invaded in the ventilation layer 4 from the ventilation gap 9 by this is the vertical trunk edge. 6 is prevented from falling on the lower end surface and the lower peripheral surface of the vertical trunk edge 6 from the lateral direction of the vertical axis 6.
[0027]
Next, the lower end surface 5 b of the starter 5 is received by the receiving portion 11 c of the water shielding plate 11. As a result, the position of the starter 5 in the height direction with respect to the drainer 8 is determined. In this state, the starter 5 is fixed to the vertical trunk edge 6. Thereafter, the lower end portion of the outer wall panel 2 is received by the lower end surface 5b of the starter 5 in a state where the sealing portion 5c of the starter 5 enters the fitting recess 2c of the outer wall panel 2, and the outer wall panel 2 is attached to the starter 5. Hold fixed.
[0028]
In this manner, the vertical body edge 6 can be shielded from rainwater entering from the ventilation gap 9 by the water shielding plate 11. In addition, since the water shielding plate 11 can position the starter 5 in the height direction with respect to the drainer 8, the vertical width of the ventilation gap 9 formed by the starter 5 and the drainer 8 becomes appropriate. Since the water shielding effect and the positioning effect in the height direction of the starter 5 can be obtained with one water shielding plate 11, the number of members can be reduced.
[Brief description of the drawings]
FIG. 1 is a longitudinal sectional view of a wall structure in a wall ventilation method according to the present invention.
FIG. 2 is a perspective sectional view showing the main part of the wall structure of the present invention.
FIG. 3 is a longitudinal sectional view of a water shielding plate according to the present invention.
FIG. 4 is a front view showing a positional relationship between a water shielding plate and a vertical trunk edge.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Wall body 2 Outer wall panel 3 Inner wall part 4 Ventilation layer 5 Starter 5b Lower end surface 6 Vertical trunk edge 7 Base 8 Drainage gap 9 Venting gap 11 Water shielding plate 11a Fixing part 11b Water shielding part 11c Receiving part 11d Height positioning part W1 Water shielding part Width of board W2 Width of vertical trunk edge

Claims (2)

A ventilation layer 4 is provided between the outer wall panel 2 and the inner wall 3,
A ventilation gap 9 is provided between a starter 5 that receives the lower end of the outer wall panel 2 and a drainer 8 that extends from the inner wall 3 side toward the outside of the outer wall panel 2 along the upper surface of the foundation 7. And the ventilation layer 4 are communicated,
In the wall structure in the in-wall ventilation structure in which the vertical trunk edge 6 is fixed to the inner wall portion 3 in a state of being disposed in the ventilation layer 4 and the starter 5 is fixed to the vertical trunk edge 6,
A water shielding plate 11 having a width W1 larger than a width W2 of the vertical trunk edge 6 is disposed below the vertical trunk edge 6 ,
The water shielding plate 11 faces the lower end surface of the vertical trunk edge 6 so as to cover the lower end surface, and extends upward from the end portion on the inner wall portion 3 side of the water shielding portion 11b. A fixed portion 11a fixed to the portion 3, a height positioning portion 11d extending downward from an end portion on the inner wall portion 3 side of the water shielding portion 11b, and an end portion on the outer wall panel 2 side of the water shielding portion 11b. A receiving portion 11c that extends toward the end and receives the lower end surface 5b of the starter 5,
The water shielding plate 11 is fixed in a state in which the lower end of the height positioning portion 11d is brought into contact with the drainer 8. The lower end surface 5b of the starter 5 has a downward slope that becomes lower toward the outside of the outer wall panel 2,
The wall structure in the in-wall ventilation structure according to claim 1, wherein the receiving portion (11c) of the water shielding plate (11) is inclined downward according to the inclination of the lower end surface (5b) of the starter (5) .

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