JPH055331A - Wall surface structure for two-by-four construction house - Google Patents

Abstract

PURPOSE:To enable execution of ventilation to the open air through release of closure of a space inside plywood for structure and to prevent the occurrence of corrosion owing to humidity in the space by providing a ventilation part formed in the plywood for structure on which treatment for preventing entrance of rainwater and other water is previously applied. CONSTITUTION:A draft hole is previously formed in plywood 3 for structure. A draft hole metal A comprising a draft hole part (a), a flange part (b), a pent-roof-form part (c), and an insect net (d) is firmly engaged with the draft hole in a state that the pent-roof-form part (c) is located on the outer wall side, and the inside and the outside of the plywood 3 are intercommunicated. Air flowing through a gap B between the plywood 3 and an outer wall material 8 flows through the draft hole part (a) to the interior and the exterior of the plywood 3. The air is bled through other draft hole or air in the gap B flows to the inside of the plywood 3 owing to a temperature difference at the inside of the plywood 3, and reversely the air flows out to the gap B. This structure discharges humidity at the inside of the plywood 3 to the outside owing to movement of air, prevents the occurrence of corrosion, and reversely prevents entrance of rainwater by means of the draft hole.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wall structure of a house constructed by a two-by-four method.

[0002]

2. Description of the Related Art The two-by-four construction method is called a frame wall construction method. First, a floor frame is made, then a wall frame is assembled and then erected, and then a floor frame on the upper floor is made above the wall frame. A horizontal structure and a vertical structure form a box structure, which is constructed sequentially from below.

Explaining the details of the actual structure of the wall framework, columnar frame members are nailed to the structural plywood to form the wall framework, and the wall framework is erected so that the structural plywood is located outside. Fill the frame material with heat insulating material such as glass wool,
Gypsum board is attached to the inner surface of the building, and the outside of the wall framework is formed by extending outer wall materials at appropriate intervals through furring strips that are nailed to form the wall surface of the house.

[0004]

A large number of flat dense chambers formed by the above-described structural plywood, frame material and gypsum board are formed on the wall surface of the wall frame by the two-by-four method. If the moisture inside the closed chamber condenses due to changes in the outside air temperature, the structural plywood, the heat insulating material, the frame material and the like will be rotted. Of course, if the heat insulating material and the like are sufficiently dried at the time of construction, there is little possibility of dew condensation at the beginning of construction, but there is a risk that moisture will invade due to secular change and dew condensation may be promoted to accelerate corrosion.

[0005]

In view of the above problems, the present invention is an improvement of the structure of the wall frame structure in a two-by-four construction house. That is, the wall surface structure according to the present invention is such that a ventilation hole is formed at an appropriate portion of the structural plywood and an invasion preventing mechanism for the falling water drop of the structural plywood wall surface is attached to the ventilation hole.

[0006]

[Function] The ventilation holes open the closed chamber of the wall that is partitioned by the structural plywood, the frame material and the gypsum board, and the air in the chamber is convected through the ventilation holes. Is not generated, and the corrosion associated therewith is also prevented. Further, the ventilation hole for preventing convection by providing a water droplet invasion mechanism in the ventilation hole does not serve as an entrance for water droplets such as rainwater.

[0007]

Embodiments of the present invention will now be described with reference to the drawings. FIG. 1 is a cross-sectional view of a wall frame in the two-by-four method, FIGS. 2 and 3 are water hole penetration preventing metal fittings, and FIGS. 4 and 5 show other examples of the air hole metal fittings.

In the two-by-four construction method, a wall frame is formed by connecting a plurality of vertical frame members 2 between edge frame members 1 (lower frame member and upper frame member) to form a frame member, and structural plywood 3 is attached to the frame member. This wall frame is installed in the floor frame 4 so that the plywood 3 is on the outside, and the heat insulating material 5 such as glass wool is provided between the frame members 1.
The outer wall surface of the two-by-four construction house is formed by filling the gypsum board 6 on the inner surface, and the outer wall material 8 on the outer side of the wall frame via the furring strip 7 to form the outer wall surface of the house. In the above-mentioned structural plywood 3, ventilation holes are preliminarily formed, and appropriate ventilation fittings are attached to the ventilation holes. The vent hole metal fitting A has a collar portion b formed on the base end side of the vent hole portion a which is tightly fitted into the bore hole, and the tip end portion of the vent hole portion a is an eaves-like portion c, and the eaves-like portion c An insect-proof net d is stretched in the lower vent hole, and is attached to the vent hole of the structural plywood 3 in advance.

When the vent hole metal fittings are attached to the structural plywood 3 so that the eaves-shaped portion c is on the outer wall side and the conventional piling is performed, the inside and outside of the plywood 3 are communicated with each other. The air flowing in the space B between the outer wall member 3 and the outer wall member 8 enters the inside and outside of the plywood 3 through the ventilation hole portion a, and escapes from other ventilation hole metal fittings (the ventilation holes are provided above and below), or Means that the air in the void B enters the inside of the structural plywood or the air inside flows out into the void B due to the temperature difference inside the structural plywood 3.

Therefore, the moisture inside the structural plywood 3 is released to the outside by the movement of the air, and the corrosion due to the moisture is prevented in advance. If the vent hole metal fitting itself has sufficient strength, it is possible to sufficiently supplement the structural strength that is reduced by forming the vent holes in the plywood.

The ventilation holes provided in the structural plywood 3 are frame members 1,
It is only necessary to provide at least one in the space surrounded by 2, but if a plurality of them are provided, the air flow in the space is improved and the effect is doubled.

Further, the vent hole metal fitting is not limited to the above embodiment, and as shown in FIGS. 4 and 5, a brim portion b1 is provided around the eave-shaped portion c1 and a screw is provided on the outer peripheral surface of the vent hole portion a1. It is possible to select any structure, such as engraving a groove and screwing the inner collar portion b2 onto the screw to mount it on the structural plywood 3 or forming the insect net d inside.

[0013]

As described above, according to the present invention, when the wall surface of the house is formed by the two-by-four method as described above, the structural plywood is provided with the ventilation part which is pre-treated to prevent rainwater and other water droplets from entering. The inner space of the structural plywood which has been opened is released from the air, and ventilation with the outside air is made possible to prevent corrosion due to moisture in the space.

[Brief description of drawings]

FIG. 1 is an explanatory diagram of an internal structure of a wall surface according to an embodiment of the present invention.

FIG. 2 is a cross-sectional view of a wall surface equipped with a metal fitting that serves as a water intrusion prevention mechanism.

FIG. 3 is a perspective view of the metal fitting.

FIG. 4 is a cross-sectional view of a wall surface to which another embodiment of the metal fitting is attached.

5 is a perspective view of the metal fitting of FIG. 4. FIG.

[Explanation of symbols]

 1 Edge Frame Material 2 Vertical Frame Material 3 Structural Plywood 4 Floor Frame 5 Heat Insulation Material 6 Gypsum Board 7 Furring Edge 8 Outer Wall Material A, A1 Vent Metal Fitting a, a1 Vent Hole b, b1, b2 Collar part c, c1 eaves Shaped part d, d1 insect repellent net

Claims (1)

Claim: What is claimed is: 1. A two-by-four construction method house comprising a structural plywood provided with ventilation holes at appropriate places, and said ventilation holes provided with a mechanism for preventing intrusion of water drops on the outer wall of the structural plywood. Wall structure in.