JP2880085B2 - Thermal insulation frame structure and method of construction - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a frame structure such as a two-by-four structure applied to a building such as a house and its application.
More specifically, the present invention relates to a heat-insulating skeleton structure in which a joint surface between standardized frame members is sealed with a soft seal member to improve heat-insulating efficiency, and a method of applying the same .

[0002]

2. Description of the Related Art In recent years, with the widespread use of cooling and heating equipment, various measures have been taken to improve the heat insulation efficiency of walls and roofs of buildings such as houses. For example, it is widely used to provide a heat insulating layer made of glass wool or synthetic resin foam between an exterior material and an interior material of a wall or a roof.

When a heat insulation layer is simply provided between an exterior material and an interior material, moisture generated by condensation is trapped inside and on the surface of the heat insulation layer. Or, the corrosion of the walls and the roof may be accelerated and the life of the building may be shortened.

In order to solve such inconveniences, a ventilation space through which outside air flows is provided between the heat insulating layer and the exterior material outside the heat insulating layer to prevent dew condensation occurring on the surface or inside the heat insulating layer, or A technique for promptly removing generated dew condensation has also been proposed (see Japanese Utility Model Laid-Open No. 5-42415).

FIG. 11 shows an example of such a case.
A middle plate 105 whose inner surface is connected and supported by a pillar or a beam 104 is disposed between the exterior material 102 and the interior material 103 which constitutes the above. Are formed. A ventilation space 107 through which the outside air flows is formed between the outer surface of the middle plate 105 and the exterior material 102, and a heat insulation space 108 through which the outside air does not flow is formed between the heat insulation layer 106 and the interior material 103. ing.

[0006]

The middle plate 1
In a 2 × 4 type frame structure in which so-called standardized frame members are joined to each other as materials for columns and beams 104 for connecting and supporting the inner surface of the frame 05, as shown in FIG. May be orthogonal to the middle plate 105 in some cases. In such a case, for example,
Despite the existence of the heat insulating layer 106 between the inner material 05 and the interior material 103, the gap 1 between the mutually joined surfaces of the frame members 109, 109
Water vapor transfer may occur between the intermediate plate 105 and the interior material 103 via the radiator 10. For this reason, during cooling of the room 111, the middle plate 1 is removed from the ventilation space 107 through which the humid outside air flows.
05, the end of the middle plate 105, the gap 110, the interior material 103,
Water vapor moves into the room 111, and conversely, during heating of the room 111, the interior material 103 and the gap 11 are removed from the humid room 111.
There is a problem that water vapor moves to the inner plate 105, the end of the middle plate 105, the end portion of the middle plate 105, and the ventilation space 107 to generate dew on the surface or inside.

[0007] The present invention, which has been proposed in order to solve the above problem, of course it can prevent drop of heat insulating effect, heat insulation can be suppressed surface condensation or internal condensation skeleton An object of the present invention is to provide a structure and a construction method thereof.

[0008]

The heat-insulating skeleton structure of the present invention is arranged at least inside the exterior material of a wall or a roof, and forms a ventilation space through which outside air flows between the exterior material and the exterior frame. a plate, connected to support the intermediate plate in contact with the inner surface of the insertion plate, a plurality of framework members which are standardized is joined
Comprising columns, and beams or the like, so as to contact the inner surface and the framework member of the insertion plate
Hard polyurethane foam formed by spraying
And the heat insulating layer made of Omu, a heat insulating building frame structure with, successively in orthogonal state to the intermediate plate, the <br/> bonding surface of the pre-Symbol framework material mutually, that is interposed soft sealing member Features. Further, the construction method of the present invention may be applied to at least a wall or a house.
Outside air circulates between the exterior material inside the exterior material of the root
Standardized with the middle plate arranged to form a ventilation space
A column, a beam, etc., in which a plurality of frame members are joined to each other,
The middle plate is connected and supported, and comes into contact with the inner surface of the middle plate and the frame material.
Insulation layer made of rigid polyurethane foam
This is a method of constructing a heat insulating frame structure formed by spraying.
Thus, the framing members are continuous with the middle plate in an orthogonal state.
A soft seal member is interposed on the joint surface of
You.

Here, as the soft sealing member, a soft urethane foam impregnated with asphalt or a caulking agent can be used.

As shown in FIG. 10, the soft seal member includes a ridge portion A, a connection portion B between the rafter and the ceiling joist, a connection portion C between the wall and the opening, a connection portion D between the floor joist and the wall, At the connection portion E between the balcony floor and the wall, at the connection portion F between the bay window sill and the wall, and at the connection portion G between the floor and the wall, between the joints of the frame members or between the joint surfaces of the frame members and other members. Can be set up.

Further, as the exterior material, metal siding, ceramic siding, ALC plate, ceramic plate and the like can be used, and as the interior material, gypsum board, synthetic resin middle plate, plywood and the like can be used.

As the heat insulating layer, rigid polyurethane foam, polyisocyanurate foam, phenol foam, polystyrene foam, ABS foam, polyethylene foam, polypropylene foam, polyolefin foam, EVA foam, PVC foam,
PVA foam, urea foam, epoxy foam,
An appropriate synthetic resin foam such as polyester foam and foam rubber can be selected.

According to the present invention, a soft seal member may be formed on a surface to be an interconnecting surface of the framing material or a surface to be joined to another member prior to the on-site construction. In this case, a soft seal member may be formed.
Further, the thickness of the frame member can be made slightly thinner in consideration of the thickness of the sealing member.

[0014] In this onset Ming is formed at least between the heat insulating layer of the inner surface of the plate in the wall and arranged inside of the outer package of the roof and the indoor and outdoor insulated, also the middle plate and the outer member When the outside air flows through the ventilation space, dew condensation is prevented from occurring on the heat insulating layer and the intermediate plate, and even if dew condensation occurs, it is quickly removed.

[0015] Here, the frame material which is in contact with the inner surface of the middle plate to connect and support the middle plate has a structure in which even if the middle plate has a mutual joining surface which is continuous in an orthogonal state or a joining surface with another member, Since the soft seal member is interposed in the gap between the joining surfaces, heat transfer through the gap is suppressed, and a decrease in heat insulation efficiency is suppressed as much as possible, and movement of water vapor can be prevented,
Dew condensation hardly occurs.

[0016]

FIG. 1 shows an embodiment of a framing frame structure applied to a wall 1 and a roof 2 of a building such as a house. For example, an exterior material 3 made of a ceramic plate and a gypsum constituting the wall 1 are shown. A middle plate 5 made of structural plywood is disposed between the interior material 4 composed of a board and a synthetic resin foam (a rigid polyurethane foam obtained by mixing a stock solution of isocyanate and a stock solution of resin; For example, the heat insulating layer 6 is formed by in-situ spraying of Achilles Aeron-R manufactured by Achilles Corporation. And the outer surface of the middle plate 5 and the exterior material 3
A ventilation space 8 is formed between the heat insulating layer 6 and the interior material 4 between the heat insulating layer 6 and the interior material 4, by the interposition of the body edge 7, through which the outside air enters from the lower opening and passes upward. No heat insulating space 9 is formed.

FIG. 2 is an enlarged view showing the vicinity of the upper portion of the wall 1, that is, the vicinity of the connection portion between the wall 1 and the roof 2. The upper frame serving as the beam 11 is provided on the vertical frame serving as the pillar 10. The beam 11 is joined horizontally with its long side in the cross-sectional shape being horizontal. A ceiling joist 12 is joined on the beam 11 with the short side in the cross-sectional shape being horizontal. The inner surface of the middle plate 5 is
The interior material 4 is joined to and supported by the ceiling joist 12 and the outer surface thereof is joined to the beam 11.

Here, a gap of about 0.5 mm to 3 mm is often opened between the mutually joined surfaces of the beam 11 made of the frame material and the ceiling joist 12, in which case the gap is formed on the inner surface of the intermediate plate 5. Continuous in orthogonal state. In order to close this gap, the beam 11
A soft seal member 13 is provided between the joint surfaces of
Is provided in advance.

The soft seal member 13 has a thickness of 5 mm.
A sheet made of a soft urethane foam having a thickness of about 20 mm and impregnated with asphalt is used, but the present invention is not limited to this, and a general caulking agent may be filled between the joint surfaces between the beam 11 and the ceiling joist 12. .

The upper surface of the ceiling material 14 is
2 and connected to and supported by it. In the roof 2, a middle plate 5 is disposed inside a roof material 15, which is an exterior material, via a rim 7, and the inside of the middle plate 5 is joined to and supported by a rafter 16. . And the middle plate 5
A ventilation space 8 communicating with the ventilation space 8 in the wall 1 is formed between the roofing material 15 and the roofing material 15, and a heat insulating layer 6 made of the same rigid polyurethane foam as described above is sprayed on the inner surface of the intermediate plate 5 by in-situ spraying. Is formed.

FIG. 3 is an enlarged view of the vicinity of the intermediate portion of the wall 1, that is, the vicinity of the connecting portion between the wall 1 and the floor 17, and a pair of left and right lateral joists in the wall 1 outside the interior material 4. 18, the side joists 18 'are arranged so as to be joined to each other with their long sides in the cross-sectional shape being vertical, and a floor material 19 is stretched on the upper surface thereof. Above the side joist 18 and the attached side joist 18 ', a lower frame 20 is connected to a floor member 19 with its long side horizontal. Also, in contact with the lower surface of the side joist 18 and the side joist 18 ', the head joint 21, the upper frame 22
Are arranged so as to be joined to each other with their long sides in the cross-sectional shape being horizontal.

Here, the middle plate 5
Where a continuous gap is expected to be generated in an orthogonal state on the inner surface of the lower frame 20, that is, between the joining surfaces of the lower frame 20 and the flooring material 19, the side joist 1
8. The same soft seal members 13, 13, 13 as previously described are interposed between the joint surface between the side joist 18 'and the head joint 21 and the joint surface between the head joint 21 and the upper frame 22. .

FIG. 4 is an enlarged view of the vicinity of the window of the wall 1, and a pair of left and right frame members arranged between the interior material 4 and the middle plate 5 in the wall 1 to connect and support them. Magsa 2
A window frame 25 is fitted between the window frame 3 and the window frame 24 which is located below the window frame 24 and also connects and supports the interior material 4 and the intermediate plate 5. The sash 26 fitted and continuous to the outside protrudes outward from the exterior material 3 through an opening formed in the exterior material 3.

In such a structure near the window, the fitting portion between the opening of the exterior material 3 and the sash 26 is sealed by the caulking agent 27 over the entire circumference, and the flange portion 26a of the sash 26 and the middle plate 5 A waterproof tape 28 is interposed between the joining surfaces between the outer surface and the outer surface.

FIG. 5 shows a ventilation space 8 formed between the exterior material 3 and the middle plate 5 in the wall 1, and a plurality of ventilation spaces 8 arranged between the exterior material 3 and the middle plate 5. The ventilation space 8 is divided into a plurality by the body edge 7. And each trunk 7 and Magsa 2
By providing a gap of about 30 mm between the window 3 and the window sill 24, the outside air flowing upward from below the window can be diverted to the left and right below the window sill 24 as shown by the arrow to rise. .

FIG. 6 is an enlarged view showing the vicinity of the lower portion of the wall 1, and a base 31 a is installed on a concrete foundation 29 via a spacer 30. A pair of left and right side joists 31b and side joists 31c installed with the long sides vertical and on the base 31a installed with the long sides horizontal in the cross-sectional shape
Are joined to each other, on which a floor material 32 is stretched. The lower frame 33 is connected to the floor material 32 and is installed with its long side horizontal.

Here, the inner surface of the middle plate 5 is joined to and supported by the lower frame 33, the base 31a and the side joist 31b, and the outer surface of the interior material 4 is joined to the lower frame 33. It is connected and supported. Then, a place where it is expected that a continuous gap is generated in the inner surface of the middle plate 5 in a perpendicular state, that is, the beam 3
3 and the floor material 32, the base 31a and the frame material 31
The same soft seal members 13, 13 as described above are interposed between the joint surfaces of the members b and 31c.

The under-floor portion is a sand layer 35, a moisture-proof polyethylene film 36, and a holding mortar 3 on a crushed stone layer 34.
7 are sequentially laminated, and a spray plate 39 supported on a large pulley 38 is located immediately below the floor material 32, and the upper surface of the spray plate 39 has the same structure as described above. A heat insulating layer 6 made of a rigid polyurethane foam is formed by in-situ spraying.

FIG. 7 is an enlarged view of the vicinity of the center ridge of the roof 2.
The middle plate 5 is arranged via a through hole, and the inner surface of the middle plate 5 is connected to and supported by a rafter 16 made of a framed material. A ventilation space 8 communicating with the ventilation space 8 in the wall 1 is formed between the middle plate 5 and the roofing material 15. Further, a heat insulating layer 6 made of the same rigid polyurethane foam as described above is formed on the inner surface of the intermediate plate 5 by spraying on site,
A purlin 40 is buried in the heat insulating layer 6.

As shown in FIG. 8, the rafter 16 can also be joined to a pair of left and right frame members 16a and 16b which are installed with their long sides in the cross-sectional shape vertical.
It is expected that a gap continuous between the joining surfaces in a state orthogonal to the middle plate 5 is generated. Therefore, the same soft sealing member 13 as described above is also provided between the joining surfaces of the frame members 16a and 16b.
13 is provided in advance. When the rafter 16 is composed of a pair of left and right I-shaped braids 16c, 16d as shown in FIG. 9, the soft seal members 13, 13 are provided between the joining surfaces at the upper and lower ends.

Next, the operation of the heat-insulating skeleton structure of the embodiment having the above-described structure will be described. In this heat-insulating skeleton structure, a middle plate 5 is arranged inside the exterior material 3 and the roof material 15 constituting the wall 1 and the roof 2, and a heat-insulating layer 6 made of the same rigid polyurethane foam as described above is provided on the inner surface thereof. By being formed, indoor and outdoor are insulated. In particular,
Since the heat insulating space 9 is formed between the heat insulating layer 6 and the interior material 4 in the wall 1, the heat insulating effect is increased accordingly.

The middle plate 5 and the exterior material 3 or the roof material 15
A ventilation space 8 is formed between the air passages and the outside air flows through the ventilation space 8. For this reason, even if the temperature gradient in the heat insulating layer 6 becomes large due to the heating of the room and the dew condensation easily occurs in the heat insulating layer 6 and the middle plate 5, the dew condensation of the outside air flowing through the ventilation space 8 causes the dew condensation. It is prevented beforehand, and if condensation forms, it is quickly removed.

Here, among the frame members that are in contact with the inner surface of the middle plate 5 and that connect and support the middle plate 5, the space between the mutually joined surfaces or between the joined surfaces with other members is orthogonal to the inner surface of the middle plate 5. Continuous portions in the state, that is, between the joint surfaces between the beam 11 and the ceiling joist 12, between the joint surfaces between the lower frame 20 and the floor material 19, the side joists 18, the attached side joists 18 ', the head joint 21, and the upper frame 22. Between the joint surfaces of the roof 2, between the joint surfaces of the beams 33 and the floor material 32, and between the joint surfaces of the base 31 a and both of the frame members 31 b and 31 c. A soft seal member 13 in which a sheet made of a soft urethane foam having a thickness of about 5 mm to 20 mm and impregnated with asphalt is crushed and interposed between the mutually joined surfaces 16b. For this reason, the heat transfer from the room side to the ventilation space 8 side or the heat transfer from the ventilation space 8 side to the room side through the gap between the joint surfaces during the cooling and heating of the room is suppressed, and the heat insulation efficiency is reduced. Is suppressed as much as possible.

[0034]

As described in the foregoing, in this onset bright, it is thermally insulated and the indoor and outdoor by the heat insulating layer of the inner surface of the plate in which is arranged inside of at least the wall or roof of the outer package, also the middle plate and the outer By allowing the outside air to flow through the ventilation space formed between the material and the material, it is possible to prevent the occurrence of dew condensation on the heat insulating layer and the middle plate, and even if the dew condensation occurs, it is quickly removed.

Here, the frame material that is in contact with the inner surface of the middle plate and supports the middle plate is connected to the middle plate even if the middle plate has a continuous joining surface that is continuous in an orthogonal state or a joining surface with another member. Since the soft seal member is interposed in the gap between the joining surfaces, heat transfer from the room side to the ventilation space side or heat transfer from the ventilation space side to the room side through the gap is suppressed. .

Therefore, according to the present invention, it is possible not only to prevent dew condensation on the heat insulating layer, but also to suppress a decrease in heat insulating efficiency as much as possible.

[Brief description of the drawings]

FIG. 1 is an explanatory view of one embodiment of the present invention , and is a cross-sectional view of a part of a wall or a roof.

FIG. 2 is an explanatory view of one embodiment of the present invention , and is an enlarged cross-sectional view near the upper part of a wall.

FIG. 3 is an explanatory view of one embodiment of the present invention , and is an enlarged cross-sectional view near a middle portion of a wall.

FIG. 4 is an explanatory view of one embodiment of the present invention , and is an enlarged sectional view near a window of a wall.

FIG. 5 is an explanatory view of one embodiment of the present invention , and is a front view in which an exterior material near a window on a wall is removed.

FIG. 6 is an explanatory view of one embodiment of the present invention , and is an enlarged sectional view near a lower portion of a wall.

FIG. 7 is an explanatory view of one embodiment of the present invention , and is an enlarged sectional view near a ridge.

FIG. 8 is a sectional view taken along line VIII-VIII of FIG. 7;

FIG. 9 is an enlarged sectional view of another embodiment of the rafter shown in FIG. 8;

FIG. 10 is a schematic view of a skeleton structure showing application portions of an embodiment of the present invention.

FIG. 11 is a sectional view corresponding to FIG. 1 showing a conventional example.

FIG. 12 is a cross-sectional view corresponding to FIG. 1, showing another conventional example.

[Explanation of symbols]

 1 Wall 2 Roof 3 Exterior material 4 Interior material 5 Middle plate 6 Heat insulation layer 7 Body edge 8 Ventilation space 9 Heat insulation space 10 pillars

Claims (2)

(57) [Claims] 1. A arranged inside at least the wall or the exterior material of the roof, the intermediate plate to form a ventilation space that outside air flows between the該Gaiso material, the intermediate plate in contact with the inner surface of the insertion plate Supporting the connection , standard
Pillars plurality of framework members which are of, which are joined, a beam or the like, so as to contact the inner surface of the framework material of the insertion plate, the field spray
A thermal insulating building frame structure comprising a cross <br/> thermal layer comprising a rigid polyurethane foam formed, the way, the continuous orthogonal state to the intermediate plate, the bonding surface of the pre-Symbol framework material mutually, soft seal A heat insulating skeleton structure characterized by interposing members. 2. At least inside a wall or roof cladding
To form a ventilation space through which outside air circulates with the exterior material.
Pillars in which a plurality of standardized frame members are joined to each other,
The middle plate is connected to and supported by a beam or the like, and the rigid polyurethane is contacted with the inner surface of the middle plate and the frame member.
A tanfoam insulation layer is formed by spraying on site
A method of constructing a heat insulating frame structure , wherein the frame members are connected to each other in a state orthogonal to the middle plate.
Heat insulation characterized by interposing a soft seal member on the surface
Construction method of frame structure.