JP3733551B2 - Outer insulation insulation method - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
TECHNICAL FIELD The present invention relates to an outer heat insulating method for constructing a wooden structure by bonding a plurality of heat insulating plates in order to insulate a room.
[0002]
[Prior art]
In general, the heat insulation method for wooden structures is constructed in order to block the indoor temperature from the outside. Conventionally, the heat insulation method (internal heat insulation method) and the external heat insulation method (outside heat insulation method) are used. ) Is known. As shown in FIG. 7, the inner heat insulating method uses glass wool 31, and an interior material 33 is disposed inside the glass wool 31 via a moisture-proof film 32, and a waterproof sheet 34 is attached to the outside of the glass wool 31. The exterior material 36 is attached via a fitting (not shown) so as to open the ventilation space 35.
[0003]
However, in the heat insulation layer constituted by inserting the glass wool 31, the glass wool 31 is cut and arranged by the main pillar 38, the inter-column 39 and the brace. And since the cut | disconnected glass wool 31 cannot be filled to the corner part of a column beam part in a cutting part, continuous construction was not able to be performed but the construction work had to take time. Moreover, the main pillar 38 and the intermediary pillar 39 themselves became a thermal bridge, and heat conduction with the glass wool 31 was hindered, so that heat could easily escape. Therefore, the heat insulation effect was to be reduced.
[0004]
For this reason, in order to improve the heat insulation effect, an outer-layer heat insulation method has recently been performed. For example, as disclosed in Japanese Patent Application Laid-Open No. 2001-3472, the outer heat insulation method is continuously stretched with a heat insulating plate 41 as a unit panel from the outside of a wooden structure. So that it can be installed. In order to improve the strength of the heat insulating plate 41 of the unit panel, as shown in FIG. 8, the four peripheral edges of the opposing metal face plate 42 are surrounded by a resin frame member 43, and foamed urethane is formed in the hollow portion inside. It is formed by firing and filling the heat insulating material 44. Furthermore, a concave surface 43a and a convex surface 43b are formed on both side surfaces of the frame member 43 so as to be fitted to each other, and the convex surface 43b is fitted to the concave surface 43a of the heat insulating plate 41 of the adjacent unit panel to continuously stretch the frame material 43. It can be set up.
[0005]
[Problems to be solved by the invention]
In the conventional external heat insulating method, the metal face plate 42 is integrally bonded to the heat insulating plate, so that the strength can be improved and the bonding between the heat insulating plates 41 and 41 of the adjacent unit panels is concave. The gap between the protrusion 43a and the protrusion 43b can be reduced, and the heat insulation effect can be improved. However, if rainwater spills on the outer surface of the heat insulating plate 41 of the unit panel due to rain or storm, or if it adheres and accumulates as dew condensation, a small amount of water droplets will form on the fitting surface between the concave surface 43a and the convex surface 43b. Since the flow cannot be prevented, there is a possibility that rainwater entering from the outside leaks at the joint between the heat insulating plates 41 and 41 of each unit panel.
[0006]
This invention solves the above-mentioned subject, and aims at providing the outer-layer heat insulation construction method which can improve a heat insulation effect and an airtight performance while aiming at prevention of water leakage.
[0007]
[Means for Solving the Problems]
In order to solve the above-described problems, the outer insulation method according to the present invention is performed as follows. That is,
A heat-insulating plate composed of a plurality of foamed plastic plates joined and assembled on the outside of the shaft assembly material of the wooden structure, and an outer covering that attaches the exterior material to the outside of the heat-insulating plate via a mounting bracket An insulation method,
The heat insulating plate has protrusions that can be engaged with each other at the vertical joints to be joined to the left and right adjacent heat insulating plates, and a drainage space is formed on a part of the engaging surface of each of the engaged protrusions. Is formed and assembled, and the lower end of the drainage space is opened outward,
The horizontal joint portion to be joined to the upper and lower adjacent heat insulating plates is formed with a gradient that slopes upward from the outside toward the inside,
A drainage groove connected to the horizontal joint portion is formed on the outer surface of the heat insulating plate.
[0008]
Preferably, when the heat insulating plate is stretched on the shaft assembly, the mounting bracket may be tightened by screw means with a spacer piece interposed between the outer surface of the heat insulating plate.
[0009]
Furthermore, it is more preferable that the heat insulating plate is formed with a V-shaped straight line at a position along the center line of the shaft assembly material arranged to face the heat insulating plate.
[0010]
【The invention's effect】
The outer insulation method of the present invention can improve the heat insulation effect by using a foamed plastic plate that is excellent in heat insulation effect and airtightness, and can engage the protrusions of a plurality of heat insulation plates. Continuous construction is possible by stretching each heat insulating plate on the outside of the shaft assembly.
[0011]
In addition, since the drainage space is formed on the engagement surface between the protruding portions of the left and right adjacent heat insulating plates in the vertical joint, rainwater from the outside has infiltrated into the joint portion of each heat insulating plate, for example. Can flow into the drainage space and return to the outside.
[0012]
Further, the horizontal joint portion that joins the upper and lower adjacent heat insulating plates has a slope inclined upward from the outside toward the inside, and a drainage groove is formed on the outer surface of the heat insulating plate. Therefore, rainwater is less likely to enter the room and water leakage can be prevented without attaching waterproof paper or a moisture-proof sheet.
[0013]
In addition, when the mounting bracket that supports the exterior material is driven from the outside of the heat insulation plate toward the shaft assembly material, a spacer piece that slightly bites into the heat insulation plate is interposed, so that it passes through the screw hole and enters the room. Rainwater that is easy to enter penetrates into the heat insulating plate by the spacer piece and is blocked by the biting portion, making it difficult to reach the screw hole. Again, this prevents water leaking into the room without attaching waterproof paper or a moisture-proof sheet. it can. Moreover, by interposing a spacer piece, it is possible to provide a ventilation layer between the heat insulating plate and the exterior material, and it is easy to remove the vertical trunk edge and the horizontal trunk edge that are conventionally attached to the outside of the heat insulating plate. Can now be carried out.
[0014]
Furthermore, since a V-shaped straight line is formed along the center of the shaft assembly material on the outer surface of each heat insulating plate to be constructed, the center position of the shaft assembly material can be confirmed even after construction. Thus, the subsequent exterior work can be easily performed.
[0015]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment of the present invention will be described with reference to the drawings. In the outer-layer heat insulating method of the present embodiment, as shown in FIG. 1, EPS (made of expanded polystyrene) having excellent heat insulating effect is formed as a single EPS plate 1 on a heat insulating plate made of a foamed plastic plate, The EPS plate 1 is joined in the left-right direction and the up-down direction so as to be stretched from the outside of the shaft assembly material (hereinafter referred to as a column) 5 to the column 5.
[0016]
EPS is stipulated in JIS A 9511 “Foamed plastic heat insulating material” and has a very low thermal conductivity of about 0.032 kcal / (m · h · ° C.) and a high moisture resistance. Therefore, it is possible to delete the waterproof paper / moisture-proof sheet, which has been conventionally required, while being excellent in heat insulation effect and airtight performance.
[0017]
As shown in FIGS. 1 to 3, the single EPS plate 1 includes a heat insulating plate main body 11 and protrusions 12 </ b> A and 12 </ b> B that protrude outward from the left and right sides of the heat insulating plate main body 11. It is formed in a rectangular plate shape. One protrusion 12A formed on each single EPS plate 1 has an outer surface formed in the same plane as the heat insulating plate main body 11 and has a thickness of about ½ of the heat insulating plate main body 11 in the thickness direction. It is formed. The other protrusion 12B has an inner surface formed on the same surface as the heat insulating plate main body 11 and is formed about ½ of the heat insulating plate main body 11 in the thickness direction.
[0018]
The inner surface of the protruding portion 12A and the outer surface of the protruding portion 12A are formed as engaging surfaces 12a and 12a, respectively, and are opposed to the protruding portion 12A or 12B of the adjacent EPS plate 1 on both sides of the heat insulating plate main body portion 11. The engaging surfaces 12a and 12a are formed to be engageable with each other.
[0019]
And the vertical joint part 2 formed by the joining surface of the EPS plates 1 and 1 adjacent in the left-right direction is formed in a crank shape, and the adjacent EPS plates 1 and 1 are engaging surfaces of the respective projecting portions 12A and 12B. When engaging with 12a * 12a, groove part 13a * 13a for forming one rectangular hole-shaped drainage space 13 is formed in each engaging surface 12a * 12a, respectively. As shown in FIG. 4, the lower end of the drainage space 13 is bent and formed so that the discharge port 13 b can be arranged outward.
[0020]
The shape of the protrusions 12A and 12B is not limited to the above. For example, one of the EPS plates 1 has protrusions protruding from the central portion with steps from both sides of the heat insulating plate main body 11. The other EPS plate 1 that is formed and adjacent may be provided with a recess that can be fitted to the protruding protrusion of one EPS plate 11 in the protruding portion on the same surface as both surfaces of the heat insulating plate main body 11. . In this case, after the projecting convex portion of one EPS plate 1 and the concave portion of the other EPS plate 1 are fitted, a groove portion that forms a drainage space 13 between one surface of the projecting convex portion and one surface of the concave portion. What is necessary is just to form 13a * 13a.
[0021]
Further, on the outer surface of the EPS plate 1, a vertical V-shaped straight line (hereinafter referred to as a V line) at a position along the center line of the column 5 when the EPS plate 1 is stretched on the column 5. 14 is formed. Thus, after the plurality of EPS plates are stretched on the pillar 5, the position of the pillar 5 can be confirmed when performing exterior work.
[0022]
Further, as shown in FIG. 3, one EPS plate 1 is arranged on the outer side surface of the EPS plate 1 in the vertical direction from the upper horizontal joint portion 3 to the lower end portion so as to be parallel to the V line 14. Long drainage grooves 16 and short drainage grooves 17 arranged in a part in the vertical direction from the upper horizontal joint portion 3 are formed. As a result, the rainwater flowing outside the EPS plate 1 or the rainwater flowing from the horizontal joint 3 is likely to flow downward along the long drainage grooves 16 and the short drainage grooves 17 and can prevent the rainwater from entering the room.
[0023]
In addition, as shown in FIG. 1, the protruding portion 12 </ b> B can be engaged with the protruding portion 12 </ b> A of the adjacent EPS plate 1 on the EPS plate 1 </ b> A disposed at the end of the corner (corner portion) of the structure. The side surface which is formed only on one side and is not projected is joined to the side portion of the EPS plate 1A which is orthogonally opposed, and the waterproof tape 7 is stuck in the corner of the joint portion.
[0024]
As shown in FIG. 4, the horizontal joint portion 3 formed by the joint surfaces of the EPS plates 1, 1 adjacent in the vertical direction has a gradient surface 15 inclined upward from the outer surface side to the inner surface side of the EPS plate 1. It is formed. This gradient surface 15 is formed in two steps of an outer gradient surface 15a and an inner gradient surface 15b disposed at a position higher than the outer gradient surface 15a with the drainage space 13 therebetween. And 15a and the gradient surface 15b are formed in the connection surface 15c which inclines slightly back, and guides the rainwater which has entered from the outside to the outside.
[0025]
The outer gradient surface 15a and the inner gradient surface 15b may be directly connected to each other so as to exclude the connection surface 15c.
[0026]
The EPS plate 1 is stretched on the column 5 by tightening a screw 22 via a mounting bracket 21 for mounting the exterior material 20. The mounting bracket 21 is conventionally used for mounting the exterior material 20, and as shown in FIG. 6, the main body portion 21a formed in a rectangular plate shape in plan view and the main body portion 21a rise from the main body portion 21a. A mounting portion 21b for mounting two adjacent exterior materials 20 and 20 in the vertical direction is provided with a wall formed between the main body portion 21a and the body portion 21a penetrating the EPS plate 1 and being fixed to the pillar 5. It has a plurality of screw holes 21c (see FIG. 6) through which the screws 22 for wearing are inserted.
[0027]
In the present embodiment, a rectangular plate-like spacer piece 24 formed slightly larger than the mounting bracket 21 is interposed between the mounting bracket 21 and the EPS plate 1 as shown in FIGS. Is done. The spacer piece 24 is formed of a metal material or a resin material, and is tightened with the mounting bracket 21 from the outside, so that the spacer piece 24 pushes the EPS plate 1 side slightly (about 0.5 mm). Cut into one surface (see Fig. 1). At this time, the EPS plate 1 is slightly bitten by the pillar 5 also on the indoor side (see FIG. 1). By this biting in, rainwater that has flowed from above or from the side flows along the outer periphery of the spacer piece 24, making it difficult to enter the screw hole 21b.
[0028]
Note that a ventilation space 25 is formed between the EPS plate 1 and the exterior member 20 in a state where the two exterior members 20 and 20 are attached to the mounting bracket 21. Since the mounting bracket 21 is not mounted on the EPS plate 1 to a predetermined size, conventionally, the vertical space edge and the horizontal body edge are generally attached to the outside of the EPS plate 1 so that the ventilation space 25 has a predetermined size. Was set to be. However, in the present embodiment, by providing the spacer piece 24, it is possible to secure the ventilation space 25 having a dimension set between the EPS board 1 and the exterior member 20, so The torso can be deleted.
[0029]
In addition, the shape of the spacer piece 24 is not limited to the above-described form, and may be a disc shape instead of a rectangular plate shape as long as it is formed larger than the mounting bracket 21. It may be.
[0030]
Next, a method for stretching the EPS plate 1 from the outside of the column 5 will be described.
[0031]
The outer heat insulation method in the present embodiment mainly describes the wall side of the structure, but of course can also be applied to the roof side.
[0032]
Column 5 includes a base installed on foundation concrete (not shown), a main vertical column standing upright in the vertical direction, and a vertical column, a horizontal column erected in the horizontal direction, and the like. A plurality of them are installed.
[0033]
First, a single EPS plate 1 is installed at the lower end of the column 5 (main vertical column), placed on the foundation with a drainage on the foundation, and the mounting piece 21 is screwed between the spacer pieces 24. Fasten at 22 and attach to column 5.
[0034]
Then, the EPS plate 1 having the inclined surface 15 formed so that the lower surface of the EPS plate 1 can be engaged with the upper surface of the EPS plate 1 is sequentially joined together with the spacer piece 24 and the mounting bracket 21 to form a column. 5 is stretched.
[0035]
When the EPS plate 1 is stretched in the longitudinal direction along one column 5 (main longitudinal column), the following is performed on both sides of the stretched EPS plate 1 so as to engage with the protrusions 12A and 12B. The rows of EPS plates 1 are sequentially joined and stretched.
[0036]
In addition, if a sealing material is stuck to the junction part of each EPS board 1A adjacent to the left-right direction and an up-down direction, while being able to improve a heat insulation effect further, the prevention of the further water leakage from the outside can also be aimed at.
[0037]
When the EPS plate 1 </ b> A is all stretched outside the pillar 5, the exterior members 20 are mounted in order in the vertical direction so as to engage with the mounting portions 21 b of the respective mounting brackets 21.
[0038]
As described above, in the outer-layer heat insulating method of the present embodiment, the heat insulating effect can be improved by using the EPS plate 1 excellent in the heat insulating effect and the airtight performance as the heat insulating plate, and the protrusions of the plurality of EPS plates 1 can be improved. By continuously engaging the EPS plates 1 on the outside of the column 5 by engaging the portions 12 with each other, continuous construction is possible.
[0039]
Moreover, since the drain spaces 13 are formed on the engagement surfaces 12a and 12a in the protruding portions 12A and 12B of the adjacent left and right EPS plates 1 and 1 in the vertical joint portion 2, the joining of the EPS plates 1 is performed. Even if rainwater from the outside enters the part, it can flow into the drainage space 13 and return to the outside.
[0040]
Further, the horizontal joint portion 3 that joins the upper and lower adjacent EPS plates 1 is formed with a slope surface 15 that is inclined upward from the outside toward the inside, and the outer surface of the EPS plate 1 has an upper surface. Since a plurality of long drainage grooves 16 and short drainage grooves 17 connected to the horizontal joint portion 3 are formed, rainwater is unlikely to enter the room, and water leakage can be prevented without attaching waterproof paper or a moisture-proof sheet. it can.
[0041]
Further, when the mounting bracket 21 that supports the exterior material 20 is driven from the outside of the EPS plate 1 toward the column 5, a spacer piece 24 that slightly bites into the EPS plate 1 is interposed, so that the screw hole 21c. The rainwater that easily enters the room through the space piece is cut off by the biting portion when the spacer piece 24 bites into the EPS plate 1, and it is difficult to reach the screw hole 21c. It is possible to prevent water leakage into the room without any problems. In addition, by interposing the spacer piece 24, a ventilation space 25 can be provided between the EPS plate 1 and the exterior material 20, and a vertical trunk edge and a horizontal trunk that are conventionally attached to the outside of the EPS plate 1. Easy installation except for the edges.
[0042]
Furthermore, since the V line 14 is formed along the center of the column 5 on the outer surface of each EPS plate to be constructed, the center position of the column 5 can be confirmed even after the construction. The exterior construction work can be easily performed.
[Brief description of the drawings]
FIG. 1 is a horizontal cross-sectional view showing a vertical joint including a corner portion of an outer heat insulating construction plate of the present invention.
FIG. 2 is a partial longitudinal sectional view showing an EPS plate in FIG.
3 is a front view showing an outer surface of the EPS plate in FIG. 1. FIG.
4 is a partial longitudinal sectional view showing a horizontal joint portion of the heat insulation method in FIG. 1; FIG.
FIG. 5 is a partial elevational view showing a mounting state of the mounting bracket and the spacer piece.
6 is a view taken in the direction of arrow V in FIG.
FIG. 7 is a partial horizontal sectional view showing a conventional inner heat insulation method.
FIG. 8 is a perspective view showing a single heat insulating plate of a conventional outer heat insulating method.
[Explanation of symbols]
1 ... EPS board (foamed plastic board)
2 ... Vertical joint 3 ... Horizontal joint 5 ... Pillar (shaft assembly)
DESCRIPTION OF SYMBOLS 11 ... Thermal insulation board main-body part 12A * 12B ... Projection part 12a ... Engagement surface 13 ... Drainage space 13a ... Groove part 14 ... V line 15 ... Gradient surface 20 ... Exterior material 21 ... Mounting bracket 22 ... Screw 24 ... Spacer piece 25 ... Ventilation space

Claims (3)

A heat-insulating plate composed of a plurality of foamed plastic plates joined and assembled on the outside of the shaft assembly material of the wooden structure, and an outer covering that attaches the exterior material to the outside of the heat-insulating plate via a mounting bracket An insulation method,
The heat insulating plate has protrusions that can be engaged with each other at the vertical joints to be joined to the left and right adjacent heat insulating plates, and a drainage space is formed on a part of the engaging surface of each of the engaged protrusions. Is formed and assembled, and the lower end of the drainage space is opened outward,
The horizontal joint portion to be joined to the upper and lower adjacent heat insulating plates is formed with a gradient that slopes upward from the outside toward the inside,
An outer heat insulating method, wherein a drainage groove connected to the upper side of the horizontal joint is formed on the outer surface of the heat insulating plate. 2. The mounting bracket is tightened by screw means with a spacer piece interposed between the outer surface of the heat insulating plate when the heat insulating plate is stretched on the shaft assembly. Outer insulation insulation method. 3. The outer heat insulation according to claim 1, wherein a V-shaped straight line is formed on the heat insulating plate at a position along a center line of the shaft assembly material arranged to face the heat insulating plate. Construction method.

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