JP2000204686A - Ceiling part heat insulating structure of wood frame construction method building - Google Patents

Abstract

PROBLEM TO BE SOLVED: To effectively prevent a heat bridge of a ceiling part by erecting rafter receiving materials on an upper surface of a head connector, arranging a ceiling common joist on an upper surface of the head connector, and laying plate-like heat insulating materials on an upper surface of the ceiling common joist. SOLUTION: A sill 21 is arranged on a footing 20, end common joists or side common joists 50, 51 are erected on the sill 21, and a plate material 24 is laid on an upper surface of the common joists 50, 51. A common joist 25 is arranged on a floor surface of the second floor, and a plate material 26 is laid on the common joist 25. Vertical frames 28 are erected at prescribed intervals on wall surfaces of the first floor and the second floor to connect these by a head connector 29, and a plate material 30 is stretched in the surface direction on the outside of the vertical frames 28. A first rafter receiving material 33 and a second rafter receiving material 34 are erected on an upper surface of the head connector 29. A ceiling common joist 35 is butted against a side surface of the rafter receiving material 33 above the head connector 29 so as to abut to an under surface of the rafter receiving material 34. A plate material 40 is laid on an upper surface of the ceiling common joist 35, and first/second plate-like heat insulating materials 37, 38 are laid on the plate material 40 to thereby prevent a heat bridge of a ceiling part.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat insulation structure for a ceiling of a framed wall construction building.

[0002]

2. Description of the Related Art A framed wall construction method for a wooden house is generally called a two-by-four because a 2 × 4 in material is used for a stud.

[0003] Such a construction method has an advantage that the kind of the cross-sectional dimension of the constituent wood may be small.

FIG. 3 shows a heat insulating structure of a ceiling portion of a conventional framed wall construction building.

In this building, a wall 1 having a predetermined thickness is constituted by a frame material. Further, glass wool 8 is loaded in the wall body 1 and is covered with an outer wall subbing material 9. That is, in this building, an inner heat insulating structure is formed in the wall 1. On the other hand, the rafter 3 is supported by the head joint 2. In addition, ceiling joists 7 arranged at predetermined intervals
In between, glass wool 5 is loaded so as to abut against anti-skid 6 from the side. In addition, in FIG.
Reference numeral 10 denotes a moisture-proof material.

[0006]

However, in such a conventional framed wall construction building, the ceiling joists are disposed in the back space of the hut. Then, a thermal bridge occurs in this part. In order to avoid this, a plate-like heat insulating material or the like can be laid on the ceiling joist to improve the heat insulating property. However, the joist 3 is in the way, and the plate heat insulating material is brought into close contact with the roof. I couldn't do that. Therefore, there is a problem that a thermal bridge cannot be prevented simply by laying a plate-like heat insulating material thereon.

SUMMARY OF THE INVENTION In view of such circumstances, an object of the present invention is to provide a heat insulating structure for a ceiling of a framing wall construction building, which can effectively prevent a thermal bridge on a ceiling of the framing wall construction building. .

[0008]

SUMMARY OF THE INVENTION In order to achieve the above object, a ceiling heat insulation structure of a framed wall construction building according to the present invention is a ceiling heat insulation structure of a framed wall construction building, wherein a head connection structure is provided. A rafter receiving material having a predetermined height is erected on the upper surface, a ceiling joist is arranged on the upper surface of the head joint, and a plate-like heat insulating material is laid on the upper surface of the ceiling joist.

[0009] According to such a configuration, a space of a predetermined height can be secured above the ceiling joist by erecting the rafter receiver, and a plate-like heat insulating material can be installed in this space without notching. it can. Therefore, since there is no heat insulating structure in which a heat insulating material is inserted between the ceiling joists, the number of thermal bridges at the ceiling is reduced, and the heat insulating property is improved.

[0010] Further, a dry face material such as a veneer, a plywood, a fiberboard, a particle board or the like can be interposed between the ceiling joist and the plate-shaped heat insulating material.

[0011] Thereby, the surface strength of the plate-shaped heat insulating material can be improved.

The girder rafter receiving material is composed of a first rafter receiving material and a second rafter receiving material having different heights,
A tall first rafter receiving material is arranged outside the room. Thereby, the ceiling joist can be reliably held.

[0013] Further, by contacting the upper surface of the rafter receiving material,
A girder packing made of a foamed synthetic resin is provided between one rafter and an adjacent rafter. Thereby, the gap between rafters can be eliminated.

[0014]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to embodiments shown in the drawings.

FIG. 1 shows a wooden two-story framed wall construction building provided with a ceiling insulation structure according to one embodiment of the present invention.

In this building, a foundation 21 is placed on a foundation 20.
Is set on the base 21 and the end joist or the side joist 5
0 and 51 are erected. Further, the plate material 24 is laid on the upper surfaces of the joists 50 and 51.

The plate member 24 is made of a woody material such as structural plywood or particle board.
On the other hand, a joist 25 is provided on the floor of the second floor. Also, on the joist 25, similarly, plate materials 26 such as a particle board and a structural plywood are laid.

Further, vertical frames 28 are erected at predetermined intervals on the walls on the first and second floors, and these are connected by a head link 29. Outside the vertical frame 28, similarly, a plate material 30 such as a structural plywood or a particle board is stretched in a plane direction. In addition, it is preferable that an airtight tape is interposed between the outer joint portion of the plate member 30 and the base 21 and the foundation 20. This airtight tape is a sealing material made of a so-called foamed synthetic resin having appropriate cushioning properties and adhesiveness. Outside these plate members 30, a plate-like heat insulating material 31 made of a foamed synthetic resin is stretched. That is, an external heat insulating structure is configured.

The plate-shaped heat insulating material 31 may be made of any foam, for example, polystyrene foam, polypropylene foam, polyethylene foam, polyurethane foam, phenol foam, acrylic foam, carbonate-based inorganic foam, Hydroxide inorganic foam,
Examples thereof include carbonate-based inorganic foams and silicate-based inorganic foams. Organic foams such as polystyrene foam and polypropylene foam are preferred when workability based on lightness is to be enhanced, and inorganic foams are preferred when nonflammability is important. These foams can be produced by an extrusion method or a bead method for an organic foam, or a batch method for an inorganic foam. Although the expansion ratio is arbitrary, it is preferably, for example, 20 to 60 times.

The plate material 30 and the plate-like heat insulating material 31 spreading in the plane direction
For example, an adhesive is used to join the two. Examples of the type of the adhesive include a vinyl acetate resin emulsion-based adhesive, an epoxy-based adhesive, and a urethane-based adhesive. Further, the plate-shaped heat insulating material 31 and the plate material 30 may be connected by a needle material such as a stapler, but it is necessary to prevent the penetration of a metal such as a needle because the metal penetrates a heat insulating defect. By providing such a heat insulating material, in this building, an external heat insulating structure is formed outside the vertical frame 28.

On the other hand, a first rafter receiving member 33 and a second rafter receiving member 34 stand on the upper surface of the head tie 29 on the ceiling of the second floor as shown in FIG. Has been established.
Note that these rafter receiving members 33 and 34 are long objects extending in the horizontal direction. Although the first rafter receiving material 33 is formed to be taller than the second rafter receiving material 34,
The rafter receiving member 34 is lifted up and arranged. As a result, the ceiling joist 3
Five support areas are secured. The ceiling joist 35 is abutted against the side surface of the first rafter receiving member 33 above the head joint 29 and is in contact with the lower surface of the second rafter receiving member 34. In this way, by securing the mounting position of the ceiling joist 35, the falling of the ceiling joist 35 is prevented. Further, on the upper surface of the ceiling joist 35, a plate material 40 such as a particle board or a structural plywood is laid in a plane. In the embodiment, a particle board is employed.

When such plate members 40 are laid out,
A first plate heat insulating material 37 made of a foamed synthetic resin is laid, and a second plate heat insulating material 38 is laid above the first plate heat insulating material 37. Therefore, in the ceiling, double insulation 3
7, 38, the thickness of the heat insulating layer is made sufficiently thick.

The rafter 39 is supported by the vertical frame 31 and the first receiving member 33. In addition, between one rafter 39 and an adjacent rafter 39, a girder packing 45 made of a plate-like foam synthetic resin is disposed so as to surround the horizontal direction. The girder packing 45 is made of a plate-like heat insulating material 31, 37,
Although it may be made of the same material as 38, it is preferable to have appropriate cushioning properties and flexibility. By arranging such girder packing 45,
The gap between the rafters 39 can be eliminated. Note that FIG.
In the figure, reference numerals 41 and 46 indicate airtight tapes. By adhering such air-tight tapes 41 and 46, the heat-insulating airtightness of the joint between the plate member 30 and the first rafter receiving member 33 and the gap between the plate member 40 and the first and second rafter receiving members 33 and 34 are obtained. Can improve the heat-insulating airtightness.

In a building provided with such a ceiling heat insulating structure, plate heat insulating materials 37 and 38 for heat insulating the ceiling.
There is no need to partially cut out. Moreover, the plate-shaped heat insulating material 3
Since it is possible to double-lay 7, 38, the heat insulating performance can be sufficiently improved even when a thin heat insulating material is used. In addition, since the plate-like heat insulating material 31 on the wall side can also be extended to the vicinity of the rafter 39, the heat insulating performance on the wall side can be sufficiently exhibited.

Although the embodiment of the present invention has been described above, the present invention is not limited to the above embodiment. For example,
In the above embodiment, the first rafter receiving member 33 and the second rafter receiving member 34 are erected, but one rafter receiving member may be provided. In this case, the rafter receiving material on the shorter side is omitted.

Further, in the above-described embodiment, the construction method in which the vertical frame 28 and the plate member 30 are attached on site when constructing the wall and the floor has been described. However, the construction method can be applied to a panel construction method.

According to the present invention, the structure previously constituted on the floor of the first floor or the floor of the second floor is employed as it is on the ceiling, so that it is necessary to newly provide members having extra dimensions. Components can be shared. Therefore, it can be constructed inexpensively. Further, even in cold regions, sufficient heat insulation performance can be exhibited.

By adopting such a structure, the heat insulation performance of the ceiling can be improved even in a so-called two-by-four building.

[0029]

As described above, according to the heat insulation structure of the ceiling of the framed wall construction according to the present invention, the rafter receiving material is erected on the upper surface of the head joint of the building whose wall is formed by the framework. By doing so, it is possible to secure a space above the ceiling joist,
By utilizing this space, the plate-shaped heat insulating material can be laid without notching. Therefore, since there is no heat insulating structure in which a heat insulating material is inserted between the ceiling joists, the number of thermal bridges at the ceiling is reduced, and the heat insulating property is improved. Thereby, sufficient heat insulating performance can be exhibited, and an optimum heat insulating structure can be provided as a heat insulating structure in a cold region.

The present invention is also effective for buildings having external heat insulation.

[Brief description of the drawings]

FIG. 1 is a sectional view of a main part of a framed wall construction building provided with a heat insulating structure according to an embodiment of the present invention.

FIG. 2 is a cross-sectional view showing an enlarged part of FIG.

FIG. 3 is a cross-sectional view of a roof on which a conventional girder heat insulation structure is installed.

[Explanation of symbols]

 33 1st rafter receiving material 34 2nd rafter receiving material 35 Ceiling joist 37 1st plate heat insulation material 38 2nd plate heat insulation material 39 rafter 40 plate material 45 girder packing

Claims (5)

[Claims] 1. A ceiling insulation structure for a framed wall construction building, wherein a rafter receiving material having a predetermined height is erected on an upper surface of a head joint, and a ceiling joist is arranged on an upper surface of the head joint. A heat insulating structure for a ceiling of a framed wall construction, wherein a plate-like heat insulating material is laid on an upper surface of a ceiling joist. 2. A heat insulating structure for a ceiling of a framed wall construction, wherein a dry surface material is interposed between the ceiling joist and the plate-like heat insulating material. 3. The dry panel according to claim 1, wherein the veneer is a veneer, a plywood, a fiberboard,
The girder heat insulation structure of a building according to claim 2, wherein the structure comprises at least one kind of particle board. 4. The rafter receiving material comprises a first rafter receiving material and a second rafter receiving material having different heights, and the tall first rafter receiving material is arranged outside the room. The ceiling heat insulation structure of a framed wall construction building according to claim 1, characterized in that: 5. A girder packing made of a synthetic foam resin is disposed between one rafter and an adjacent rafter in contact with an upper surface of the rafter receiving material. A heat insulating structure for a ceiling of a framed wall building according to any one of the above.