JP2001011965A - Highly heat insulated structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a highly heat-insulated structure which can support the load of external walls and roof materials with a simple structure even when heat insulation materials are increased in thickness, and improve the heat insulation performance by the thick heat insulation materials. SOLUTION: By using a reinforcement member 30 provided with a frame work fitting part 30a to mount a frame work 21 on one end part, a furring strips fitting part 30c for furring strips 24 to fit a roof material 28, etc., on the other end part, and a section fitting part 30b with a heat insulation material 22 abutting on an intermediate part, the frame fitting part 30a is fixed to the frame 21, a heat insulation material 22 abuts thereon to hold the heat insulation material fitting part 30b, and the furring strips 24 are fitted to the furring strips fitting part 30c outside the heat insulation material 22. By transmitting the load applied to the furring strips 24 to the frame work 21 through the reinforcement member 30, the bending moment is prevented from being applied to a binding member, the bending moment is reduced to support the roof materials 28, and the roof materials 28 are prevented from being shifted even when the heat insulation material 22 is increased in thickness by an external heat insulation method.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a high heat-insulating structure, and more particularly, to a structure in which the thickness of a heat-insulating material is increased to improve the heat-insulating performance. is there.

[0002]

2. Description of the Related Art Architectural structures, such as wooden houses, are constructed by applying interior and exterior to a wooden or steel frame, and the frame can be a conventional method, a 2 × 4 method, a panel method, or the like. There are various things.

[0003] In order to keep the interior of a building structure equipped with such a frame comfortable, a heat insulating material has been installed, and one of them is an external heat insulating method.

In this external heat insulation method, a heat insulating material is attached to the outdoor side (outdoor side) of the frame, so that the frame itself is also compared with a so-called internal heat insulating method in which a heat insulating material such as glass wool is filled between the frames. It can be covered with a heat insulating material, is excellent in heat insulation and airtightness, is easy to construct, and has been widely used in recent years.

[0005] The structure of the roof part by this external heat insulation method is as follows:
As shown in FIG. 6 (a), a rafter 1b is arranged on a main house 1a to form a frame 1 of a roof portion, and a heat insulating material 2 is arranged on a rafter 1b constituting the frame 1 to form a nail or the like. A rafter 1b is fixed to the rafter 1b by a heat insulating material binding material 3 such as a screw, and outside the heat insulating material 2, a roof edge 4 for fixing a roof material penetrates the heat insulating material 2 with a body edge binding material 5 such as a nail or a screw. 1b,
A field board 6 and a roofing 7 are arranged outside the rim 4 and fixed to the rim 4 with nails, etc., and a roofing material 8 is arranged on the outermost side and fixed to the field board 6 with a roof binding material 9. It has become.

As shown in FIG. 1B, the structure of the outer wall portion by the outer heat insulation method is basically the same as that of the roof portion, and a base 11 is provided on a foundation 10. A pillar 12a and a stud are arranged thereon to form a frame 12, and a heat insulating material 13 is arranged outside the pillar 12a constituting the shaft 12 and a heat insulating material binding material 14, such as a nail or a screw, is attached to the pillar 12a. The outer edge 15 for fixing the outer wall material is fixed outside the heat insulator 13 and fixed to the column 12a by penetrating the heat insulator 13 with the outer edge binder 16 such as a nail or a screw. An outer wall member 17 is arranged and fixed to the body edge 15 by an outer wall binder 18.

In such an external heat insulation method, the heat insulating materials 2 and 1
3 is relatively soft and light, whereas the roof material 8 and the outer wall material 17 are heavy, so that the heat insulating materials 2 and 13 can hardly be expected to have a holding force as a structural material. The weight is applied to the heads of the waist ties 5 and 16, and a bending mom with the root of the waist ties 5 and 16 acting as a fulcrum acts.

For example, in the case of a roof portion, the rim 4 fixed by the rim binding material 5 is moved in a direction perpendicular to the roof surface (rafter 1b) due to the weight of the roof material 8, the base plate 6, and the roofing 7. Along with the roof surface (eave direction). At this time, since the body edge 4 is pushed in the eaves direction, the body edge binding material 5 group must support the load, and the load is W, and the distance between the rafter 1b and the body edge 4 (the thickness of the heat insulating material 2) is reduced. L, maximum bending moment M
Then, the bending moment applied to the waistline binder 5 becomes maximum at the joint with the rafter 1b, and M = W · L.

For this reason, in the external heat insulation method, it is necessary to support the load W such as the roof material 8 by the frame 1 via the heat insulating material 2. However, in the heat insulating material 2 designed according to the conventional heat insulating standard,
The thickness is about 30 to 50 mm, and no problem occurs even if the load such as the roofing material 8 is supported on the frame 1 via the rim binding material 5 or the heat insulating material binding material 3. Similarly, the outer wall portion did not cause any particular problem.

[0010]

However, due to the revision of the energy conservation standards and the demand for improving the heat insulation performance of building structures, it is necessary to increase the thickness of the heat insulating material. It is necessary to increase the thickness of the heat insulating material to about 140 mm in the case of hard urethane foam, and to increase the thickness of the heat insulating material in the outer wall portion to about 70 mm in the case of hard urethane foam.

When the thickness of the heat insulating material 2 is increased, the distance L between the rafter 1b and the rim 4 increases, and the maximum bending moment M
In the case of an excessive load, the trunk ties 5 may be buckled due to an excessive load, or in a severe case, the roof material 8 etc. may slip down. When a heavy material such as that described above is used, it may be more noticeable.

Therefore, since the bending moment that can be withstood by the rim binding material 5 and the like is proportional to the cube of the diameter D, the support can be made by increasing the diameter D of the rim binding material 5 and the like and reducing the construction pitch. It is conceivable to increase the load,
In the case of commercially available nails, there is a limit to the maximum diameter of a 5-inch nail and the nail diameter can be increased, so a custom-made brim binding material is required. However, when these are driven into the frame, there is a problem that the frame is likely to be cracked.

[0013] Also, when the construction pitch of the body edge binding material or the like is reduced, the problem of cracks in the frame is expected.

SUMMARY OF THE INVENTION The present invention has been made in view of the problems of the prior art, and can support the load of an outer wall material or a roofing material with a simple structure even if the heat insulating material is made thicker. It is an object of the present invention to provide a high heat insulation structure that can improve the heat insulation performance.

[0015]

The high heat insulation structure according to claim 1 of the present invention for solving the problems of the prior art,
A highly heat-insulating structure for mounting an outer wall material or a roofing material on the outdoor side of a frame of a building structure via a heat insulating material, and a frame mounting portion attached to the frame at one end on the outdoor side of the frame. The outer wall material and the roof material are attached to the other end portion, and the edge portion of the joint portion of the heat insulating material is provided on both sides of one of the heat insulating material end surface and the other heat insulating material end surface at the intermediate portion thereof. And a reinforcing member that is provided with a cross-section material mounting portion abutted from above and that can transmit and support the load applied via the trunk edge to the shaft assembly.

According to this high heat insulation structure, a frame mounting portion is provided at one end for mounting to the frame, and a frame mounting portion for mounting the outer wall material and the roof material is provided at the other end. The intermediate portion has a cross-section material mounting portion in which one of the heat insulating material end faces and the other heat insulating material end face of the joint portion of the heat insulating material are abutted from both sides, and transmits a load applied via the body edge to the shaft assembly. Using a reinforcing member that can be used, the frame mounting part is fixed to the frame, the heat insulating material is applied so as to sandwich the heat insulating material mounting part, and the body edge is attached to the body edge mounting part outside the heat insulating material,
By transmitting the load applied to the rim to the frame via the reinforcing member, a bending moment is not applied to the tying member or the like, so that the outer wall material or the roof material can be supported by reducing the bending moment.

According to a second aspect of the present invention, in addition to the structure of the first aspect, at least one of the body edge mounting portion and the frame assembly mounting portion of the reinforcing member is thermally insulated. It is characterized by being covered with a material.

According to this high heat insulation structure, one or both of the body mounting portion and the frame mounting portion of the reinforcing member are covered with the heat insulating material. In order to further improve the heat insulation performance.

Further, a high heat insulating structure according to a third aspect of the present invention is characterized in that, in addition to the configuration according to the first or second aspect, the reinforcing member is made of plastic in which a metal plate is inserted. is there.

According to this high heat insulation structure, the reinforcing member is made of plastic in which a metal plate is inserted. By covering the metal plate with plastic, heat conduction by the reinforcing material itself is suppressed as much as possible, and further heat insulation is achieved. We are trying to improve performance.

[0021]

Embodiments of the present invention will be described below in detail with reference to the drawings.

FIGS. 1 to 3 relate to an embodiment in which the high heat insulating structure of the present invention is applied to a roof portion. FIG. 1 (a) is a sectional view along a rafter, and FIG. 1 (b) is orthogonal to the rafter. 2 is a perspective view of one of the reinforcing members, FIG. 2 is a perspective view of one of the reinforcing members, and FIG.
FIG. 3 is an explanatory view of the construction process.

In this high heat insulation structure 20, a rafter 21b is arranged on a purlin 21a to form a frame 21 of a roof portion, and a heat insulator 22 is placed on the rafter 21b constituting the frame 21.
Is placed on the rafter 2 with the heat insulating binder 23 such as nails and screws.
1b, and a rim 24 for fixing the roof material is fixed to the rafter 21b through the heat insulating material 22 by a rim binding material 25 such as a nail or a screw outside the heat insulating material 22.
Rafter 21 forming framing 21 using reinforcing member 30
b can transmit and support the load applied on the waist edge 24.

In the high heat insulation structure 20, the body edge 2
4 and a roof board 27 and a roofing 27 are arranged and fixed to the rim 24 with nails or the like.
8 are arranged and fixed to the field board 26 with the roofing material binding material 29.

The reinforcing member 30 used in such a high heat insulating structure 20 to support the body edge 24 on the rafter 21b constituting the frame 21 is formed by bending a metal plate, for example, as shown in FIG. A horizontal plate-like frame assembly mounting part 3 made at one end
0a is formed, and a vertical heat insulating material mounting portion 30b is formed at a height corresponding to the thickness of the heat insulating material 22 continuously to the shaft assembly mounting portion 30a. An L-shaped body edge mounting portion 30c is formed at an end portion. Then, the shaft mounting portion 30 of the reinforcing member 30
The hole 30d for binding the reinforcing member is formed in each of the a and the waist edge attaching portion 30c so that the necessary number of reinforcing member binding members 31 such as nails can be attached based on a general tree structure design standard or the like. The number and arrangement are determined.

The reinforcing member 30 is made of a metal such as iron, stainless steel, copper or the like, a coated product thereof, a plastic in which the metal is inserted, a ceramic or the like which is usually used as a metal for a structure. In particular, FIG.
As shown in (b), in the case of a plastic in which a metal plate is inserted, heat conduction can be suppressed, heat insulation performance can be improved, and the occurrence of heat insulation defects can be prevented.

As described above, since the reinforcing member 30 needs to support the roof load applied through the trunk edge 24,
The thickness is determined, and if it is too thick, the weight increases and handling is inconvenient.
Those having a range of 7 to 5.0 mm are used.

The cross-sectional shape of the reinforcing member 30 is shown in FIG.
It is not limited to the one provided with the plate-shaped shaft assembly mounting portion 30a and the L-shaped body edge mounting portion 30c shown in (a) and (b), but the shaft assembly mounting portion 30a serving as a mounting portion to the shaft assembly. A heat insulating material mounting portion 30b to which the end surface of the heat insulating material 22 is applied from both sides;
4 only needs to be provided, and a frame assembly mounting portion 30a as shown in FIG.
And the body edge mounting portion 30c is formed in an L shape, or as shown in FIG.
The body edge mounting portion 30c may have a U-shape,
Further, a combination of these may be used. Depending on the difference in the position of the hole 30d for tightening the reinforcing member, it is appropriately selected in consideration of the workability such as the driving direction and the mounting direction of the reinforcing member tightening material 31 such as nails, screws, bolts and the like. Just do it.

Further, the depth (length) of the reinforcing member 30
Is set to be, for example, about 150 to 200 mm so as to prevent inconvenience in handling such as transportation, but may be continuous along the length of the rafter depending on the weight of the roof or the like.

A method for constructing the high heat insulating structure 20 using such a reinforcing member 30 will be described with reference to FIG.

First, the reinforcing member 30 is fixed with a reinforcing member binding material 31 such as a nail, a screw, or a bolt by mounting the frame mounting portion 30a of the reinforcing member 30 on the upper surface of the rafter 21b constituting the frame 21. Predetermined spacing, for example 450-2400mm
Attach them along the rafters 21b at approximately regular intervals (see (a)).

The arrangement of the reinforcing member 30 depends on the rafter 2
It is not limited to the case where the same direction is set along 1b,
The body edge mounting portion 30c may be arranged so as to alternately change the direction so that both sides of the body edge 24 can be fixed.

After that, the heat insulating material mounting portion 30 of the reinforcing member 30
The heat insulating material 22 is pressed against the b from both sides so as to be tightly contacted with no gap, and is fixed as before with a heat insulating material binding material 23 such as a nail or a screw having a sufficient length corresponding to the thickness of the heat insulating material 22.
The heat insulating material binding material 23 is mainly for fixing the heat insulating material 22 itself (see (b)).

As the heat insulating material 22, rigid urethane foam, polystyrene foam, polyethylene foam, phenol foam, plate-like glass wool or rock wool can be used, and those with or without a surface material on the front surface or the back surface can be used. Any of these may be used.

In the joint portion of the heat insulating material 22, there are a portion where the reinforcing member 30 is interposed and a portion where the reinforcing member 30 is not present.
Utilizing the elasticity of the heat insulating material 22 such as rigid urethane foam, the heat insulating material 22 may be pressed and adhered so as not to form a gap, or may be cut in advance by the thickness of the reinforcing member 30 or the like. .

After attaching the heat insulating material 22 to the heat insulating material mounting portion 30b of the reinforcing member 30 by pressing the heat insulating material 22 from both sides, the body edge mounting portion 30c of the reinforcing member 30 protruding above the joint portion of the heat insulating material 22 is provided. Then, a reinforcing member binding material 31 such as a nail, a screw, or a bolt is put into the reinforcing member binding hole 30d, and the body edge 24 is fixed.

At the intermediate portion where the reinforcing member 30 is not provided, the body edge 24 is fixed to the rafter 21b constituting the frame 21 by using the body edge binding material 25 as necessary. Thus, the waist edge 24 is connected to the waist edge mounting portion 3 of the reinforcing member 30.
After fixing to 0c, the outer periphery side attachment portion 30c of the reinforcing member 30 is covered with urethane spray or the like so that dew condensation or heat insulation loss does not occur.

The coating of the heat insulating material by the urethane spray or the like may be performed on the frame mounting portion 30a which is a mounting portion of the reinforcing member 30 to the rafter 21b, or only one of them may be used. good.

Next, on the rim 24, which is attached via the reinforcing member 30 and can directly support the load on the rafters 21b, the base plate 26 and the roofing are provided outside the rim 24 as before. 27 is arranged and fixed to the rim 24 with nails or the like, and a roofing material 28 is arranged on the outermost side and fixed to the field board 26 with a roofing material binding material 29.

According to the high heat insulation structure 20, the load on the roof (the base plate 26, the roofing 27, the roofing material 28, the snow when snowing, etc.) applied to the rim 24 is directly applied to the rafters via the reinforcing member 30. It is transmitted to and supported by 21b.

When such a reinforcing member 30 is used, the section modulus Z in the relational equation of bending moment resistance: M = σ · Z (σ is an allowable bending stress, Z is a section modulus) can be significantly improved. Thus, the bending resistance M can be greatly increased as compared with the case where only a conventional nail is used.

As described above, by using the reinforcing member 30, the rim 24 is formed.
Is supported by the rafters 21b, so that the load on the roof can be sufficiently supported even if the thickness of the heat insulating material 22 is increased, and the displacement of the roof material 28 can be prevented.

Even if the heat insulating material 22 is made thicker, the outer heat insulating method can be employed, so that the heat insulating performance can be improved.

Furthermore, since the high heat insulating structure 20 itself uses only the reinforcing member 30, the construction does not require skill, and the cost and the construction period can be reduced.

In the high heat insulation structure 20, the body edge 24
Through the heat insulating material 22 with a thick and long nail etc.
It is not necessary to fix the rafters 21b by using a large number of them, and the rafters 21b can be prevented from cracking.

Next, another embodiment of the high heat insulation structure will be described with reference to FIG. 4. The same portions as those already described are denoted by the same reference numerals and description thereof will be omitted.

In this high heat insulation structure 40, even if the thickness of the heat insulating material 22 is the same, the height from the purlin 21a to the upper surface of the roofing material 28 can be reduced, and the rafter 21b is provided at the joint of the heat insulating material 22. A cut-out portion 22a is formed, and the cut-out portion 22a is brought into contact with the upper surface and the side surface of the rafter 21b, and the upper end surface 22b above the cut-out portion 22a is reinforced.
It is mounted so as to be pressed against the heat insulating material mounting portion 30b.

Therefore, the height of the heat insulating material mounting portion 30b of the reinforcing member 30 is also set to a size corresponding to the height of the upper end face 22b above the notch 22a.

The other structure is the same as that of the already described high heat insulating structure 20.

With such a high heat insulating structure 40, the same operation and effect as those of the high heat insulating structure 20 described above can be obtained, and the thickness of the roof can be reduced.

Next, an embodiment in which this high heat insulating structure is applied to an outer wall portion will be described with reference to a horizontal sectional view shown in FIG. 5. FIG. 5A shows a case where the present invention is applied to a wooden frame. FIG. 3B shows a case where the present invention is applied to a steel structure frame.

In the high heat insulating structure 50 of the outer wall portion, the frame mounting portion 30a of the reinforcing member 30 is attached to the pillar 51a or the stud 51b constituting the wooden or steel frame 51.
If it is made of steel, it is fixed with a reinforcing member binding material 31 such as a screw or a bolt or by welding or the like, and is attached at predetermined intervals in the vertical direction of the shaft assembly 51.

Then, the heat insulating material 22 is pressed against both sides of the reinforcing member 30 so as to be in close contact with the heat insulating material mounting portion 30b, and the heat insulating material binding material 2 is formed as before.
Fix with 3.

Thereafter, the waist edge 24 is vertically arranged on the waist edge mounting portion 30c protruding outside the heat insulating material 22 of the reinforcing member 30, and is attached to the shaft set 51 with the waist edge binding material 25 and the waist edge mounting. At the portion 30c, it is attached using the reinforcing member binding material 31.

Then, the outer wall material 52 is attached to the outside of the body edge 24 with the outer wall material binding material 53 to complete the process.

In the case of such a high heat insulating structure 50 of the outer wall portion, similarly to the case of the roof portion, the bending moment resistance can be greatly improved by the reinforcing member 30 and even if the thickness of the heat insulating material 22 is increased. The load of the outer wall material 52 and the like can be supported, the displacement of the outer wall material 52 can be suppressed, and the outer heat insulation method can be employed, so that the heat insulation performance can be improved.

Further, the waist edge 24 is made thicker and longer.
It is not necessary to use a large number of
There is no occurrence of cracking of the frame 51 or the like.

Furthermore, since the high heat insulating structure 50 itself uses only a reinforcing member, the construction does not require skill, and the cost and the construction period can be reduced.

The frame to which the high heat insulation structure is applied is a frame used for a building, and is generally used, for example, by a conventional method, a 2 × 4 method, a panel method, or the like. The invention can be applied to any of the frames, and the frame of the roof portion may be any of a Japanese hut and a Western hut.

The outer wall material and the roof material may be any ones as long as they are generally used. For example, the outer wall material may be mortar, tile, siding, ALC, or the like.
Bricks, iron plates and the like can be mentioned, and as roofing materials, tiles, asbestos slate, colonial, iron plate and the like can be mentioned.

Furthermore, in addition to ordinary nails, binding materials for fixing the heat insulating material, the rim, the rafter, the outer wall material, the roof material, etc.
Wood screws, screw nails, bolts, screws, etc. may be used, and not limited to metal, but may be ceramic or plastic.

[0062]

According to the high heat insulation structure of the first aspect of the present invention, as described above in detail with the embodiments, the one end is provided with the frame mounting portion for mounting to the frame.
At the other end, a rim attachment portion for a rim for attaching the outer wall material or the roof material is provided, and one end face of one of the heat insulating materials and the other end face of the other heat insulating material of the joint portion of the heat insulating material are provided on both sides at an intermediate portion thereof. Using a reinforcing member that has a section material joint mounting part that is abutted from and can transmit and support the load applied via the trunk edge to the frame,
The frame mounting part is fixed to the frame, the heat insulating material is applied so as to sandwich the insulating material joint mounting part, and the body edge is attached to the outside of the heat insulating material, so the load applied to the body edge is reinforced. It can be transmitted directly to the frame via the member, so that the bending moment does not act on the binding material or the like, and the outer wall material or the roof material can be supported by reducing the bending moment.

Thus, even if the heat insulating material becomes thicker, the external heat insulating method can be applied to the roof portion and the outer wall portion.

Further, the structure is simple and no skill is required for the work.

Further, the cost is low and the construction period is not long.

According to the high heat insulation structure of the present invention, one or both of the body edge mounting portion and the frame assembly mounting portion of the reinforcing member are covered with the heat insulating material.
Heat insulation defects due to the reinforcing member can be prevented from occurring at the joints of the heat insulating material, and the heat insulating performance can be further improved.

Further, according to the high heat insulation structure of the third aspect of the present invention, since the reinforcing member is made of a plastic in which a metal plate is inserted, the reinforcing material itself is covered by covering the metal plate with the plastic. Can minimize heat conduction and further improve heat insulation performance.

[Brief description of the drawings]

FIG. 1 shows an embodiment in which a high heat-insulating structure of the present invention is applied to a roof portion, (a) is a cross-sectional view along a rafter,
(B) is sectional drawing of the direction orthogonal to a rafter.

FIG. 2 is a perspective view of one of the reinforcing members according to an embodiment in which the high heat insulating structure of the present invention is applied to a roof portion, (a) is a perspective view thereof, and (b) to (d) are cross-sectional views of the respective members. It is.

FIG. 3 is an explanatory view of a construction process according to an embodiment in which the high heat insulation structure of the present invention is applied to a roof portion.

FIG. 4 is a cross-sectional view in a direction perpendicular to rafters according to another embodiment in which the high heat insulating structure of the present invention is applied to a roof portion.

FIG. 5 is a horizontal cross-sectional view according to an embodiment in which the high heat insulating structure of the present invention is applied to an outer wall portion, where (a) is a case of a wooden frame, and (b) is a case of a steel frame. Are respectively shown.

FIG. 6 is a cross-sectional view of a conventional heat insulating structure, and FIG.
Shows the case of the roof portion, and (b) shows the case of the outer wall portion.

[Description of Signs] 20 High heat insulating structure 21 Frame 21a Purlin 21b Rafter 22 Heat insulating material 22a Notch 22b Upper end surface 23 Heat insulating material binding material 24 Body edge 25 Body edge binding material 26 Field plate 27 Roofing 28 Roof material 29 Roof material binding Material 30 Reinforcement member 30a Frame assembly attachment portion 30b Heat insulation material attachment portion 30c Body edge attachment portion 30d Hole 31 Reinforcement member binding material 40 High heat insulation structure 50 High heat insulation structure 51 Frame assembly 51a Column 51b Stud column 52 Exterior wall material 53 Exterior wall material 53

Claims (3)

[Claims] 1. A high heat insulation structure in which an outer wall material or a roofing material is attached to the outdoor side of a frame of a building structure via a heat insulating material, and is attached to the frame at one end on the outdoor side of the frame. The other end is provided with a waist edge mounting portion to which the outer wall material and the roof material are mounted, and at the intermediate portion between the one heat insulating material end face of the joint portion of the heat insulating material and the other heat insulating material. A highly heat-insulating structure comprising a cross-section mounting portion for contacting a material end face from both sides and a reinforcing member capable of transmitting and supporting a load applied via a trunk to a frame. 2. The high heat insulation structure according to claim 1, wherein at least one of the body edge mounting portion and the frame assembly mounting portion of the reinforcing member is covered with a heat insulating material. 3. The high heat insulating structure according to claim 1, wherein said reinforcing member is made of plastic in which a metal plate is inserted.