Vent layer connection device, wooden building, and construction method of wooden building

Abstract

To provide a vent layer connection device capable of integrating vent layers.SOLUTION: A vent layer connection device is provided with a connection member arranged so as to seal a gap between a lower end part of outside wall finishing material and an outdoor end part of a foundation of a wooden building where outside wall vent layers are formed through a trunk edge between the outside wall finishing material and an outside wall substrate and an underfloor vent layer is formed through a foundation packing between the foundation and a base.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a ventilation layer connecting device, a wooden building, and a method for manufacturing a wooden building. [Background technology]

[0002] In wooden buildings, a stud may be placed between the exterior wall finishing material and the exterior wall base material to form an exterior wall ventilation layer, or a foundation gasket may be placed between the foundation and base to form an underfloor ventilation layer. Summary of the Invention [Problem to be solved by the invention]

[0003] The main object of the present invention is to provide an air layer connecting device, a wooden building, and a method for manufacturing a wooden building that can integrate air layers. [Means for solving the problem]

[0004] In order to solve the above problems, one aspect of the present invention is a ventilation layer connection device for a wooden building in which an exterior wall ventilation layer is formed by interposing furring strips between an exterior wall finishing material and an exterior wall base material, and an underfloor ventilation layer is formed by interposing foundation packing between the foundation and base, the device comprising: a connecting member that is arranged to close the gap between the lower end of the exterior wall finishing material and the outdoor end of the foundation, and that connects the exterior wall ventilation layer and the underfloor ventilation layer. This makes it possible to integrate the ventilation layers.

[0005] In the above aspect, the connecting member may include an outer plate portion disposed between the exterior wall finishing material and the furring strip and extending downward, and a bottom plate portion disposed on the foundation and extending from a lower end of the outer plate portion toward the interior of the building. This makes it possible to close the gap with the outer plate portion and the bottom plate portion.

[0006] In the above aspect, the outer plate portion may include an inclined portion inclined downward toward the exterior, which allows the outer plate portion to have a drainage function and improves the appearance.

[0007] In the above aspect, the bottom plate portion may be inclined downward toward the exterior, and a drain hole may be formed in the exterior end of the bottom plate portion or the lower end of the outer plate portion, thereby enabling drainage even if water droplets fall into the device.

[0008] In the above aspect, a pressing member may be further provided, which is disposed between the exterior wall finishing material and the exterior wall base material and has a lower end abutting against the bottom plate portion. This makes it possible to prevent the bottom plate portion from lifting up.

[0009] In the above aspect, an inner member may be further provided, the inner member being disposed between the furring strip and the base and having a lower end bent toward the outdoors. With this, even if water droplets fall into the device, the water droplets can be directed away from the underfloor ventilation layer.

[0010] Another aspect of the wooden building of the present invention is a wooden building in which furring strips are interposed between the exterior wall finishing material and the exterior wall base material to form an exterior wall ventilation layer, and foundation packing is interposed between the foundation and the base to form an underfloor ventilation layer, and the wooden building is equipped with an air ventilation layer connecting device that is arranged to close the gap between the lower end of the exterior wall finishing material and the outdoor end of the foundation and has a connecting member that connects the exterior wall ventilation layer and the underfloor ventilation layer. This makes it possible to integrate the ventilation layers.

[0011] In addition, in the method for manufacturing a wooden building according to another aspect of the present invention, the connecting member is attached to the lower end of the furring strip, and then the exterior wall finishing material is attached to the furring strip. This makes it possible to install a ventilation layer connecting device and integrate the ventilation layer.

[0012] In the above aspect, the gap between the connecting member and the foundation may be sealed with a sealant, thereby improving airtightness. [Effects of the Invention]

[0013] According to the present invention, it is possible to integrate the ventilation layer. [Brief explanation of the drawings]

[0014] [Figure 1] FIG. 1 is a cross-sectional view showing an example of a wooden building provided with an air layer connecting device. [Figure 2] FIG. 1 is a perspective view showing an example of a wooden building provided with a ventilation layer connecting device. [Figure 3] FIG. 10 is a side view showing an example of a connecting member of the ventilation layer connecting device. [Figure 4] FIG. 10 is a side view showing an example of an inner member of the ventilation layer connecting device. [Figure 5] FIG. 1 is a diagram illustrating ventilation paths in a wooden building. [Figure 6] FIG. 10 is a cross-sectional view showing a modified example of the ventilation layer connecting device. [Figure 7] FIG. 1 is a cross-sectional view showing an example of a wooden building provided with an air layer connecting device. [Figure 8] FIG. 1 is a cross-sectional view showing an example of a wooden building provided with an air layer connecting device. [Figure 9] FIG. 10 is a side view showing an example of a connecting member of the ventilation layer connecting device. [Figure 10] 10 is a side view showing an example of a pressing member of the ventilation layer connecting device. FIG. DETAILED DESCRIPTION OF THE INVENTION

[0015] Hereinafter, embodiments of the present invention will be described with reference to the drawings. In this specification and the drawings, elements similar to those described above with reference to the previous drawings will be designated by the same reference numerals, and detailed descriptions thereof may be omitted as appropriate.

[0016] [First embodiment] 1 and 2 are a cross-sectional view and a perspective view partially showing an example of a wooden building 100 provided with an air-permeable layer connecting device 1A according to the first embodiment. Of these, Fig. 2 shows the state before an exterior wall finishing material 8 is attached. Fig. 3 is a side view showing an example of a connecting member 2A of the air-permeable layer connecting device 1A. Fig. 4 is a side view showing an example of an inner member 3 of the air-permeable layer connecting device 1A. Fig. 5 is a diagram for explaining the ventilation path of the wooden building 100.

[0017] In the figure, the X1 direction indicates the indoor direction, the X2 direction indicates the outdoor direction, the Z1 direction indicates the upward direction, the Z2 direction indicates the downward direction, and the Y1-Y2 direction is the width direction.

[0018] The wooden building 100 comprises a concrete foundation 4 and a wooden base 5 placed on the foundation 4. A resin or rubber base packing 6 is interposed between the foundation 4 and the base 5, thereby forming an underfloor ventilation layer D1.

[0019] The underfloor ventilation layer D1 may be a ventilation hole or ventilation slit formed in the foundation packing 6 itself, or may be a gap formed between adjacent foundation packings 6. The indoor end of the underfloor ventilation layer D1 is connected to the underfloor space UF of the wooden building 100.

[0020] The wooden building 100 comprises an exterior wall base material 7 and an exterior wall finish material 8 placed on the outdoor side of the exterior wall base material 7. Between the exterior wall base material 7 and the exterior wall finish material 8, wooden furring strips 9 (ventilated furring strips) are interposed, thereby forming an exterior wall ventilation layer D2. The furring strips 9 are vertical furring strips that extend in the vertical direction. However, the furring strips 9 may also be horizontal furring strips.

[0021] The exterior wall base material 7 is a plate-like body including one or more layers, and includes a waterproof sheet on the outermost side. The exterior wall base material 7 may also include plywood. The exterior wall finishing material 8 is so-called siding, and is attached to the furring strips 9.

[0022] The exterior wall ventilation layer D2 is a space secured between the exterior wall base material 7 and the exterior wall finish material 8 by the interposition of the furring strips 9. The upper end of the exterior wall ventilation layer D2 is connected to the outdoor space through a gap 81a formed between the exterior wall finish material 8 and the eaves soffit 11 (see Figure 5).

[0023] A gap G is formed between the lower end of the exterior wall finishing material 8 and the outdoor end of the foundation 4. In this embodiment, a ventilation layer connection device 1A is provided to close this gap G and airtightly connect the underfloor ventilation layer D1 and the exterior wall ventilation layer D2.

[0024] The ventilation layer connecting device 1A includes a connecting member 2A and an inner member 3. The connecting member 2A and the inner member 3 are made of, for example, a steel plate and formed by bending. However, the connecting member 2A and the inner member 3 may also be made of aluminum.

[0025] As shown in Figure 3, the connecting member 2A includes an outer plate portion 21, a bottom plate portion 22 extending from the lower end of the outer plate portion 21 toward the indoor side, and an inner plate portion 23 extending upward from the indoor side end of the bottom plate portion 22.

[0026] The outer plate portion 21 and the bottom plate portion 22 of the connecting member 2A close the gap G and connect the underfloor ventilation layer D1 and the exterior wall ventilation layer D2 in an airtight manner. In this specification, the term "airtight" does not necessarily mean complete airtightness, but rather means adequately preventing gas leakage or having a certain level of airtightness or higher.

[0027] The outer plate portion 21 is a plate portion located on the outdoor side that extends mainly in the vertical direction. The outer plate portion 21 includes a vertical portion 212 that is located between the exterior wall finish material 8 and the furring strip 9, and an inclined portion 214 that is located below the exterior wall finish material 8.

[0028] The inclined portion 214 is inclined downward and toward the outdoors. By providing the inclined portion 214, it is possible to direct rainwater that runs down the exterior wall finishing material 8 so that it does not hit the foundation 4 as much as possible.

[0029] The bottom plate portion 22 is a plate portion located on the lower side that extends mainly horizontally, and is placed on the foundation 4. The bottom plate portion 22 is inclined downward toward the outdoors. A drain hole 22a is formed at the outdoor end of the bottom plate portion 21.

[0030] The inclination of the bottom plate portion 22 and the drain holes 22a are formed so that, in the unlikely event that water droplets fall into the device, they can be drained outside.

[0031] Since the connecting member 2A is provided to airtightly connect the underfloor ventilation layer D1 and the exterior wall ventilation layer D2, the fewer the number of drainage holes 22a, the better. The spacing between the drainage holes 22a arranged in the width direction is preferably greater than the width of the furring strips 9, for example, and is further preferably greater than the spacing between the furring strips 9 arranged in the width direction.

[0032] The gap between the bottom plate portion 22 and the foundation 4 is sealed with a sealant. By sealing this gap, it is possible to improve the airtightness of the connecting portion (the inner space of the connecting member 2A) between the underfloor ventilation layer D1 and the exterior wall ventilation layer D2 formed by the connecting member 2A.

[0033] The inner plate portion 23 is a plate portion extending in the vertical direction and located on the indoor side. A large number of ventilation holes 23a are formed in the inner plate portion 23 along the width direction. The inner plate portion 23 is disposed opposite the outdoor surface of the foundation packing 6, i.e., so as to block the underfloor ventilation layer D1. The inner space of the connecting member 2A and the underfloor ventilation layer D1 are connected through the ventilation holes 23a.

[0034] The inner plate portion 23 is disposed below the outdoor end portion of the base 5. Specifically, the inner plate portion 23 is disposed so that its upper end is in contact with or close to the lower surface of the base 5. However, the inner plate portion 23 may be disposed below the inner member 3 (see FIG. 6).

[0035] By positioning the inner plate portion 23 below the base 5 or the inner member 3, even if an upward force acts on the bottom plate portion 22 due to a sealant filled in the gap between the bottom plate portion 22 and the foundation 4 or mortar applied to the outer surface of the foundation 4, the inner plate portion 23 will abut against the base 5 or the inner member 3, making it possible to prevent the bottom plate portion 22 from floating up.

[0036] 4, the inner member 3 is a plate-shaped member that extends mainly in the vertical direction, and the lower end is bent toward the exterior. The inner member 3 is disposed between the furring strip 9 and the base 5.

[0037] Specifically, the inner member 3 includes a vertical portion 31 that is positioned between the furring strips 9 and the base 5, and a bent portion 32 that is positioned below the furring strips 9 and bent toward the outdoors. The inner member 3 may be positioned between the furring strips 9 and the exterior wall base material 7, or may be positioned between the exterior wall base material 7 and the base 5.

[0038] By providing the bent portion 32, even if water droplets do fall into the device, they can be directed to a position as far away as possible from the underfloor ventilation layer D1. Furthermore, water droplets that fall from the bent portion 32 are guided by the bottom plate portion 22 toward the outdoors and are discharged from the drainage holes 22a.

[0039] A manufacturing method for a wooden building 100 equipped with an air-permeable layer connecting device 1A includes the steps of attaching an inner member 3 to the lower end of an exterior wall base material 7, attaching a furring strip 9 to the exterior wall base material 7, attaching a connecting member 2A to the lower end of the furring strip 9, and attaching an exterior wall finishing material 8 to the furring strip 9, in this order.

[0040] The method may further include a step of sealing the gap between the connecting member 2 and the foundation 4 with a sealant. This step may be performed before or after the step of attaching the exterior wall finishing material 8 to the furring strips 9.

[0041] [Second embodiment] 7 and 8 are a cross-sectional view and a front view partially showing an example of a wooden building 100 provided with an air layer connecting device 1B according to the second embodiment. FIG. 8 shows the state before the exterior wall finishing material 8 is attached. FIG. 9 is a side view showing an example of a connecting member 2B of the air layer connecting device 1B. FIG. 10 is a side view showing an example of a pressing member 92 of the air layer connecting device 1B. Configurations that overlap with those of the first embodiment are given the same numbers, and detailed explanations may be omitted.

[0042] 9, the connecting member 2B includes an outer plate portion 21 and a bottom plate portion 22 extending toward the interior of the room from a lower end of the outer plate portion 21. The connecting member 2B does not include an inner plate portion 23 in which the above-described ventilation holes 23a are formed.

[0043] The outer panel portion 21 includes a vertical portion 212 arranged between the exterior wall finishing material 8 and the furring strip 9, an inclined portion 214 extending from the lower end of the vertical portion 212 toward the exterior and downward, and a vertical portion 216 extending downward from the outdoor end of the inclined portion 214.

[0044] The indoor end of the bottom plate portion 22 may have a slight bend as shown in FIG. 9, or may not have any bend.

[0045] 7, 8, and 10, the ventilation layer connecting device 1B further includes a pressing member 92 for pressing the connecting member 2B downward, in addition to the connecting member 2B and the inner member 3. The pressing member 92 is made of wood, for example.

[0046] The holding member 92 is disposed between the exterior wall base material 7 and the exterior wall finish material 8, similar to the furring strip 9, and its lower end abuts against the bottom plate portion 22 of the connecting member 2B. This makes it possible to prevent the bottom plate portion 22 from lifting up.

[0047] The holding member 92 is disposed between adjacent furring strips 9 and attached to the lower end of the exterior wall base material 7. The holding member 92 has, for example, a height approximately equal to that of the base 5 and a width approximately equal to that of the furring strips 9.

[0048] As shown in Figure 10, the pressing member 92 includes an intervening portion 94 that is positioned between the exterior wall base material 7 and the exterior wall finishing material 8, and a thin-walled portion 96 that is located below the intervening portion 94 and is thinner than the intervening portion 94.

[0049] The indoor surface of the thin portion 96 is recessed relative to the indoor surface of the interposed portion 94, forming a step. On the other hand, the outdoor surface of the thin portion 96 is flush with the outdoor surface of the interposed portion 94.

[0050] In other words, a notch 96a is formed on the indoor side of the thin portion 96. This notch 96a is formed to avoid the bent portion 32 of the inner member 3.

[0051] A lower surface 962 of the thin portion 96 abuts against the bottom plate portion 22 of the connecting member 2B. The lower surface 962 of the thin portion 96 is inclined downward and toward the outdoors in accordance with the inclination of the bottom plate portion 22.

[0052] The manufacturing method of a wooden building 100 equipped with the ventilation layer connecting device 1B includes the same steps as in the case of the ventilation layer connecting device 1A, and further includes a step of attaching a retaining member 92 after the step of attaching the connecting member 2B to the lower end of the furring strip 9 and before the step of attaching the exterior wall finishing material 8 to the furring strip 9.

[0053] Specifically, in the process of attaching the pressing member 92, the pressing member 92 is inserted from above between the connecting member 2B and the inner member 3, and the pressing member 92 is attached to the exterior wall base material 7 with the lower surface 962 of the pressing member 92 abutting against the bottom plate portion 22 of the connecting member 2B.

[0054] [Effect of ventilation layer connecting device] According to the embodiment described above, as shown in Fig. 5, by connecting the underfloor ventilation layer D1 and the exterior wall ventilation layer D2 using the ventilation layer connecting device 1, the entire wooden building 100 can be enclosed in an air layer. This also facilitates the movement of air within the underfloor space UF of the wooden building 100. Furthermore, relatively dry air can be taken in through the gap 81a formed between the exterior wall finishing material 8 and the eaves 11. Furthermore, by providing an intake and exhaust vent in the indoor floor IF, air at a stable temperature can be taken into the room.

[0055] Furthermore, by connecting the underfloor ventilation layer D1 and the exterior wall ventilation layer D2 with the ventilation layer connecting device 1, heated air convection occurs, realizing natural ventilation. That is, when sunlight hits the exterior wall finishing material 8 and the air in the exterior wall ventilation layer D2 is heated, an ascending air current is generated, which moves the air in the underfloor space UF, which is connected to the exterior wall ventilation layer D2 via the underfloor ventilation layer D1.

[0056] This effect is particularly pronounced in the summer. In other words, in the summer, the air in the exterior wall ventilation layer D2 is heated and rises, drawing in the air in the underfloor space UF, which is cooler than the outdoors, achieving efficient ventilation and cooling the building. In addition, as the air in the exterior wall ventilation layer D2 on the sunny side is heated and rises, the unheated air in the exterior wall ventilation layer D2 on the shaded side can be drawn into the underfloor space UF. In this way, in the summer, the entire house can be kept cool by ventilating widely and releasing heat.

[0057] On the other hand, in winter, the air is dry and it is difficult for an updraft to occur in the exterior wall ventilation layer D2, so the air flow decreases, but because there is little convection, a layer of air envelops the entire house and keeps it warm. In other words, in winter, the house can be enveloped in warm air with little ventilation.

[0058] In addition, in order to connect the underfloor ventilation layer D1 and the exterior wall ventilation layer D2, the gap G between the lower end of the exterior wall finishing material 8 and the outdoor end of the foundation 4 can be blocked, thereby preventing rats and insects from entering through the gap G.

[0059] Furthermore, by closing the gap G, the conventional base flashing is no longer necessary, allowing for greater freedom in design around the lower end of the exterior wall finishing material 8. For example, by providing an inclined portion 214 on the outer plate portion 21 of the connecting member 2A or 2B, it is possible to achieve a simple and stylish appearance while still providing the flashing function.

[0060] As shown in Fig. 6, a conventional base flashing 12 may be further provided together with the ventilation layer connecting device 1C. In this example, the connecting member 2C is formed in a U-shape and does not have the inclined portion 214 (see Fig. 1). Also, in this example, the drainage hole 22a (see Fig. 3) may be formed in the lower end of the outer panel portion 21.

[0061] Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and it goes without saying that various modifications can be made by those skilled in the art. [Explanation of symbols]

[0062] 1 (1A to 1C) ventilation layer connecting device, 2 (2A to 2C) connecting member, 21 outer plate portion, 212 vertical portion, 214 inclined portion, 216 vertical portion, 22 bottom plate portion, 22a drainage hole, 23 inner plate portion, 23a ventilation hole, 3 inner member, 31 vertical portion, 32 curved portion, 4 foundation, 5 base, 6 foundation packing, 7 exterior wall underlayment material, 8 exterior wall finishing material, 9 furring strip, 92 holding member, 94 interposition portion, 96 thin portion, 962 underside, 96a notch, D1 underfloor ventilation layer, D2 exterior wall ventilation layer, G gap

Claims

1. A connecting member for a wooden building in which a furring strip is interposed between an exterior wall finishing material and an exterior wall base material to form an exterior wall ventilation layer, and a foundation packing is interposed between a foundation and a base to form an underfloor ventilation layer, the connecting member being arranged to close the gap between the lower end of the exterior wall finishing material and the outdoor end of the foundation, and connecting the exterior wall ventilation layer and the underfloor ventilation layer; A ventilation layer connecting device comprising:

2. The connecting member is An outer panel portion disposed between the exterior wall finishing material and the furring strip and extending downward; A bottom plate portion extending from a lower end of the outer plate portion toward the interior and disposed on a foundation; Including, The ventilation layer connecting device according to claim 1 .

3. The outer plate portion includes an inclined portion inclined toward the exterior and downward. The ventilation layer connecting device according to claim 2 .

4. The bottom plate portion is inclined downward toward the exterior, and a drain hole is formed in the exterior end portion of the bottom plate portion or the lower end portion of the outer plate portion. The ventilation layer connecting device according to claim 2 .

5. The exterior wall finishing material and the exterior wall base material are disposed between the pressing member, and the lower end of the pressing member abuts against the bottom plate portion. The ventilation layer connecting device according to claim 2 .

6. The inner member is arranged between the furring strip and the base, and has a lower end bent toward the exterior. The ventilation layer connecting device according to claim 1 .

7. A wooden building in which a furring strip is interposed between the exterior wall finishing material and the exterior wall base material to form an exterior wall ventilation layer, and a foundation packing is interposed between the foundation and the base to form an underfloor ventilation layer, a ventilation layer connecting device provided with a connecting member that is arranged to close the gap between the lower end of the exterior wall finishing material and the outdoor end of the foundation and connects the exterior wall ventilation layer and the underfloor ventilation layer; A wooden building equipped with:

8. The method for manufacturing a wooden building according to claim 7, After the connecting member is attached to the lower end of the furring strip, Attach the exterior wall finishing material to the furring strip. Manufacturing methods for wooden buildings.

9. The gap between the connecting member and the foundation is sealed with a sealant. The method for manufacturing a wooden building according to claim 8.

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