JP2008255628A - Heat insulating wall structure of wooden building - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a heat insulating wall structure of a wooden building excelling in heat insulating performance, heat retaining performance and airtight performance and preventing an energy loss and the occurrence of dew condensation. <P>SOLUTION: The heat insulating wall structure of the wooden building comprises a pair of facing columnar holding bodies and a heat insulating member fitted between the holding bodies. A contact part between the holding body and a heat insulating panel has at least one crank-like bent part on a plane almost orthogonal to the pair of holding bodies and the heat insulating panel. A second heat insulating panel which covers the pair of holding bodies and the heat insulating member may be provided. The heat insulating member may be formed by laminating a plurality of panel-like heat insulating materials. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a heat insulating wall structure of a wooden building.

  The three main methods of heat insulation for wooden buildings are external heat insulation, filling heat insulation, and composite heat insulation.

  Outer insulation is a heat insulation method in which a heat insulating material is attached to the outside of a wall. In general, there are methods such as sticking a heat insulating board on the back of the outer wall material or taping with a plywood or plate-like heat insulating material.

Filling heat insulation is a heat insulation system in which a fiber heat insulating material such as glass wool is used as a filling heat insulating layer in spaces such as between columns, between columns, and between beams in a wooden building. Filling with fiber insulation only has problems with breathability, moisture proofing, and air tightness, so after filling with fiber insulation, stick a moisture proof / air tight sheet on the wall, or on the outside of the insulation layer It is necessary to form a ventilation layer and a moisture-permeable layer.

Composite heat insulation is a heat insulation system that combines outer heat insulation and filling heat insulation. In general, spaces such as between wooden columns, between columns, and between beams are filled with fiber-based heat insulating materials such as glass wool, and a moisture-proof and air-tight sheet is applied on the inside, and the outside is covered with a plate shape. Insulation is applied.

  Each of these heat insulation structures has advantages and problems, but has a feature that both can obtain high effects with respect to heat insulation and airtight performance.

In addition, the Ministry of Land, Infrastructure, Transport and Tourism has issued the “Next Generation Energy Saving Standards” (“Construction and Standards of the Architect for Rationalization of Energy Use for Houses” and “Guidelines for Design and Construction”) for the insulation wall structure. Yes. This is to improve the heat insulation performance and airtightness performance of houses, and reduce the energy consumption and energy loss of all houses by reducing the frequency of use of heating and cooling in each household and the energy loss of houses, thereby saving energy. To do.
JP-A-11-172800 JP 2005-120799 A JP 2003-41678 A

  By the way, there is a condensation problem such as surface condensation and internal condensation as one of the problems to be noted in wooden construction. In particular, internal condensation has been regarded as a problem since it causes decay and deterioration of wood and heat insulating materials and shortens the life of a building. There are various anti-condensation measures, but considering the whole wooden construction, it is considered that a heat insulation structure with high heat insulation performance, airtight performance and heat insulation performance is effective. In other words, if air containing water vapor is shielded from cold outside air and is not cooled in the building, and the inside of the building can be kept warm for a long time, air containing water vapor exists in the building. It is thought that condensation does not occur. In particular, the heat retaining performance is also important from the viewpoint of energy saving because it relates to the use of air conditioning. Speaking of air conditioning in a general house, this refers to partial air conditioning that is used for each room. However, since partial air conditioning produces air with different temperatures in the building, it has a problem that it tends to cause condensation. . Therefore, in order to keep the inside of the building at a constant temperature by air conditioning, there is no choice but to manage the entire building by air conditioning, but there is a problem that the energy cost is excessive.

  Moreover, even if it conforms to the above-mentioned next-generation energy saving standard, sufficient effects are not obtained in heat insulation performance, airtight performance, and heat retention performance, and there is a problem that the frequency of use of air conditioning is not reduced. In view of the above, development of a heat insulating wall structure of a wooden building excellent in heat insulating performance, heat retaining performance and airtight performance is eagerly desired.

In order to solve the above problems, a heat insulating wall structure of a wooden building according to the present invention includes a pair of opposed columnar holders and a heat insulating member fitted between the holding bodies, and a contact portion between the holding body and the heat insulating member. Is characterized in that it has at least one or more crank-shaped bent portions on a surface substantially orthogonal to the pair of holding bodies and the heat insulating member. Although the detailed description of the crank-shaped bent portion will be described later, as shown in FIG. 1 or FIG. 2, the two corner portions are alternately connected to indicate a zigzag state. Thereby, since a heat insulation member and a holding body contact at least 3 surfaces, the close_contact | adherence with a holding body and a heat insulation member can be improved. Moreover, even if a gap is generated between the holding body and the heat insulating member, the moving speed of the air is easily reduced by the crank-shaped bent portion.

Moreover, you may provide the 2nd heat insulation panel which covers a pair of holding body and a heat insulation member. By providing this heat insulation panel, the heat insulation performance and heat insulation performance of the heat insulation wall structure can be further enhanced. As a sticking method, it is preferable to provide a sticking surface for sticking the second heat insulating panel on the holding body and stick the second heat insulating panel to the sticking surface. Further, the holding body may be provided with a second pasting surface located in parallel with the pasting surface. This second affixing surface is preferably attached to a wooden building pillar or a stud. In other words, the heat insulating wall structure according to the present invention is what is called an external heat insulation, which is attached to the outside of the outer wall structural material of a wooden building.

  Moreover, you may use multiple panel-shaped heat insulating materials for a heat insulating member. Although details of the heat insulating member will be described later, for example, one block-shaped heat insulating material may be molded to be a heat insulating member, or a plurality of panel heat insulating materials may be stacked and used as the heat insulating member.

  Further, on the surface side of the holding body in contact with the heat insulating member, the first side surface orthogonal to the bonding surface edge portion, the second side surface orthogonal to the second bonding surface edge portion, and the first side surface and the second side surface are connected. The connection surface may be a single surface orthogonal to the first side surface edge and the second side surface edge, or a group of surfaces in which a plurality of surfaces are orthogonal to each other in a bellows shape. Thereby, a crank-like bent portion appears in the cross-sectional shape of the contact portion between the holding body and the heat insulating member. When the connecting surface is one surface orthogonal to the first side surface edge and the second side surface edge, one crank-shaped bent portion appears, and a plurality of surfaces are a group of surfaces that are orthogonal to each other in a bellows shape In this case, two or more crank-shaped bent portions appear.

A heat insulating wall structure of a wooden building according to the present invention includes a pair of opposing columnar holding bodies and a heat insulating member fitted between the holding bodies, and a contact portion between the holding body and the heat insulating member includes a pair of holding bodies and Since at least one or more crank-shaped bent portions are provided on the surface substantially orthogonal to the heat insulating member, the airtightness of the holding body and the heat insulating member can be improved. Furthermore, even if a gap is generated in the contact portion between the holding body and the heat insulating member, the air moving speed can be reduced, so that energy loss and dew condensation can be prevented.

  Moreover, since a heat insulation member uses a some panel-shaped heat insulating material, it can use the existing heat insulation panel currently marketed generally, and can contribute to cost reduction.

  Further, on the surface side of the holding body in contact with the heat insulating member, the first side surface orthogonal to the bonding surface edge portion, the second side surface orthogonal to the second bonding surface edge portion, and the first side surface and the second side surface are connected. Since the connection surface is one surface orthogonal to the first side surface edge and the second side surface edge, or a group of surfaces in which a plurality of surfaces are orthogonal to each other in a bellows shape, a plurality of panels Each panel-like heat insulating material can be closely fitted between the first side surface, the second side surface, and the connecting surface of the pair of holding bodies, so that the heat insulating member can be easily installed. It is. Furthermore, it is possible to construct a heat-insulating structure with a thicker heat-insulating layer by using a commonly used heat-insulating panel, providing a heat-insulating wall structure with excellent heat-insulating performance, air-tightness performance, heat retention performance, and work efficiency. It becomes possible to do.

  The heat insulation wall structure 2 of the wooden building which concerns on this invention is demonstrated referring a figure. FIG.1 and FIG.3 is explanatory drawing which showed the heat insulation wall structure 2 of the wooden building which concerns on this invention, and FIG. 2 is the elements on larger scale of the holding body 4 vicinity of the heat insulation wall structure 2. FIG. In addition, these figures are only for demonstrating this invention, and do not limit this invention at all.

The heat insulating wall structure 2 of a wooden building according to the present invention includes a pair of opposing columnar holding bodies 4 and a heat insulating member 18 fitted between the holding bodies 4.

The holding body 4 according to the present invention refers to a columnar member that can hold the heat insulating member 18. As for the material of the holding body 4, generally used wood is preferable, but resin or the like can also be used. When the holder 4 is a plastic resin, the weight can be reduced. Other materials can be used, but may be set as appropriate in consideration of thermal conductivity, heat insulation performance, and the like. Further, as shown in FIG. 3, the holding body 4 may be provided on a base for the holding body, or may be provided with a girder. Various conditions may be imposed on the holding structure of the heat insulating member 18. It may be set as appropriate in consideration. In FIG. 3, a pair of holding bodies 4 are provided on the holding body base for convenience of explanation, but a plurality of holding bodies 4 may be installed side by side.

Moreover, although the heat insulation wall structure 2 of the wooden building which concerns on this invention is good to attach the holding body 4 to either the pillar 24 of wooden construction, or the stud 26, for example, either the pillar 24 of wooden construction, or the stud 26 May be used as the holding body 4. Moreover, the method which combined both may be used. In addition, about the method and attachment tool which attach the holding body 4 to the pillar 24 and the space | interval pillar 26, the bolt, a nut, screw biz, L type, or a U-shaped metal fitting etc. which are generally used conventionally are used. An attachment method may be used and is not particularly limited.

  In addition, as shown in FIG. 2, the holding body 4 has a cut surface shape of a contact portion between the holding body 4 and the heat insulating panel 20 when the pair of holding bodies 4 and the heat insulating panel 20 are cut substantially orthogonally. A shape having at least one crank-shaped bent portion 6 is preferable. As shown in FIG. 2, the crank-shaped bent portion 6 refers to a state in which two corner portions are alternately connected to form a zigzag shape (hereinafter, the crank-shaped bent portion 6 is unless otherwise specified). The cut surface shape of the contact portion between the holding body 4 and the heat insulating panel 20 when the pair of holding bodies 4 and the heat insulating panel 20 are cut substantially orthogonally has two corners alternately connected in a zigzag shape. Refers to the state). In FIG. 2, the corners of the crank-shaped bent portion 6 are all provided at a right angle, but it is not always necessary to have a right angle. If it is not a right angle, it should be an obtuse angle. Moreover, the crank-shaped bent part 6 is good to be located in the opposing surface side of a pair of holding body 4, so that the corner | angular part located in a room inner side is good. That is, as shown in FIG. 1, the space between the pair of holding bodies 4 is narrower on the indoor side than on the outdoor side with the crank-shaped bent portion 6 as a boundary. This is because the heat insulating member 18 is fitted from the outside of the building, and if the outdoor side between the pair of holding bodies 4 is narrower than the indoor side, the heat insulating member 18 cannot be fitted into the holding body 4 closely. Because.

  The holding body 4 may have any shape as long as it has a crank-shaped bent portion 6. However, as shown in FIG. 5 or FIG. 10, the first side surface 12, the second side surface 14, and the connecting surface 16 that connects the first side surface 12 and the second side surface 14 may be used. 5 and 6 are explanatory views showing an embodiment of the holding body 4. The affixing surface 8 is a surface to which the second heat insulating panel 22 is affixed, and refers to a surface facing the outdoor side when the heat insulating wall structure 2 is installed. The 2nd sticking surface 10 is a surface located in parallel with the sticking surface 8, and points out the surface which faces a room inner side at the time of heat insulation wall structure 2 installation. The first side surface 12 refers to a surface orthogonal to the edge portion of the pasting surface 8, and the second side surface 14 refers to a surface orthogonal to the edge portion of the second pasting surface 10. The connection surface 16 refers to a surface connecting the first side surface 12 and the second side surface 14. And if the connection surface 16 is one plane, it will become a shape as shown in FIG. 5, and one crank-shaped bending part 6 will appear. If the connection surface 16 is a surface group in which a plurality of surfaces are orthogonal to each other in a bellows shape, the shape is as shown in FIG. 6, and a plurality of crank-shaped bent portions 6 appear. Further, as shown in FIG. 4, the first side surface 12 or the second side surface 14 may have a large width. In addition, as for the surface which does not contact the heat insulation member 18 of the holding body 4, the bonding surface 8 edge part and the 2nd bonding surface 10 edge part may be tied by one plane.

  Further, the opposing surfaces of the pair of holding bodies 4 may have opposing shapes. Even when the first side surface 12, the second side surface 14, and the coupling surface 16 are provided on the opposing surface side of the pair of holding bodies 4, the opposing surfaces may be in a shape facing each other. Thereby, when a plurality of panel-like heat insulating materials are stacked to form the heat insulating member 18, the heat insulating panel 20 can be closely fitted between the holding bodies 4. For example, when the first side surfaces 12 of the opposing surface have different sizes or shapes, there are places where the heat insulating panel 20 and the connecting surface 16 do not contact each other, but such a case is possible if the opposing surfaces are opposed to each other. No.

  In addition, in order to make the holding body 4 into the shape as shown in FIG. 5 or FIG. 6, there are methods of forming by cutting a square bar or connecting or combining a plurality of members. Although the holding body 4 formed by any method can be used, since the present invention aims to improve the airtightness of the heat insulating wall structure 2, there is a possibility that a gap is formed in the forming method in which a plurality of members are connected and combined. It is better to be integrally formed.

Next, as the heat insulating member 18 according to the present invention, it is preferable to use a panel-like or block-like member made of phenol foam, urethane foam, or polystyrene foam as a raw material. The heat insulating member 18 refers to all the members that are fitted between the pair of holding bodies 4 and constitute the heat insulating layer. The heat insulating panel 20 refers to a panel-like heat insulating material. Although a fiber-based heat insulating material can be used as the heat insulating member 18, in order to obtain a heat insulating performance equivalent to that of the panel material with the fiber heat insulating material, the thickness of the heat insulating layer needs to be several times that of the panel material. There is. In addition, compared with the heat insulating panel 20, the fiber heat insulating material has a problem that internal condensation is likely to occur, and it is easily affected by the weather and season when the fiber heat insulating material is filled. good.

  Further, the shape of the heat insulating member 18 may be a shape in which the holding body 4 and the heat insulating member 18 are in close contact with each other at the crank-shaped bent portion 6, and may be appropriately set according to the shape of the holding body 4. For example, in the case of the holding body 4 shown in FIG. 5, one block-like heat insulating material is processed and formed, or a plurality of panel-like heat insulating materials are stacked as shown in FIGS. There is a way to install. In FIG. 1, the heat insulation panels 20 are fitted one by one between the first side surfaces 12 and the second side surfaces 14, but a plurality of heat insulation panels 20 may be used. What is necessary is just to set suitably the number of the heat insulation panels 20 inserted | inserted between. Further, as shown in FIG. 4, the heat insulating member 18 may be provided only between the first side surfaces 12 and between the connecting surfaces 16 without providing the heat insulating members 18 between the second side surfaces 14. Also at this time, the number of heat insulating panels 20 to be installed may be set as appropriate.

  Moreover, the heat insulation wall structure 2 which concerns on this invention may affix the 2nd heat insulation panel 22 which covers a pair of holding body 4 and the heat insulation member 18. FIG. As the second heat insulation panel 22, it is preferable to use a panel material made of phenol foam, urethane foam, or polystyrene foam as a raw material. The second heat insulation panel 22 may be made of the same material as that of the heat insulation member 18 or may be different, and may be set as appropriate.

  The above is the description of the heat insulating wall structure 2 of the wooden building according to the present invention, but various conditions and settings can be changed without departing from the object of the present invention. In the above description, the heat insulating structure has been mainly described. However, as shown in FIG. 1, it is natural that a ventilation layer, an exterior material, a decorative material, and the like may be provided. Needless to say, auxiliary members such as used airtight tape, packing, putty, etc. may be used as appropriate.

  Next, the enforcement method of the heat insulation wall structure 2 of the wooden building which concerns on this invention is demonstrated. In addition, these description does not limit this invention at all.

First, the heat insulation wall structure 2 is assembled. First, a frame is formed by the base for the holding body, the holding body 4 and the girder. The installation location of the holding body 4 is provided at a position corresponding to the pillar 24 or the pillar 26 of the wooden building to which the two heat insulating wall structures are to be attached. In addition, as for the dimensions of the base for the holding body, the holding body 4 and the girder used this time , the base used a square bar having a cross section of 120 mm × 90 mm, and the girder used a square bar having a cross section of 120 mm × 120 mm. The base and girder lengths are set appropriately. The holding body 4 has a shape as shown in FIG. 5, the application surface 8 is 30 mm wide, the second application surface 10 is 60 mm wide, the first side surface 12 is 60 mm wide, the second side surface 14 is 60 mm wide, and the connection surface 16 is 15 mm wide.

  Next, the heat insulation panel 20 having a thickness of 60 mm made of phenol foam is fitted between the holding bodies 4. This time, two heat insulation panels 20 having different widths were used in an overlapping manner. One heat insulation panel 20 is fitted between the first side surfaces 12, and the other is fitted between the second side surfaces 14, and the heat insulation panel 20 fitted between the first side surfaces 12 is the second side surface. The width is slightly longer than that of the heat insulating panel 20 fitted between them. These heat insulation panels 20 are first fitted between the second side surfaces 14, and then the heat insulation panels 20 are fitted between the first side surfaces 12.

  Next, the heat insulating wall structure 2 is attached to the pillar 24 or the interposition pillar 26. A 120-150 mm screw biz was used to fix the holding body 4 and the pillar 24, and an L-shaped metal fitting was used to fix the holding body 4 and the inter-column 26, but the fixing tool and the connecting tool may be appropriately set. .

  Next, the second heat insulating panel 22 is attached to the holding body 4. As the second heat insulating panel 22, a panel-shaped heat insulating material having a thickness of 50 mm made of phenol foam was used. After affixing the second heat insulating panel 22, the outer wall material holding member is attached to the holding body 4, and the outer wall material is attached to the outer wall holding material. Moreover, when providing a heat insulation layer in the ceiling part of a building, a plywood board is provided on a beam and a foundation | substrate, and the heat insulation panel 20 should just be attached on this plywood board.

  The above process is repeated to provide a heat insulating layer on the entire outer wall of the wooden building. In addition, this time, after attaching the heat insulation panel 20 to the holding body 4, the heat insulation panel 20 is attached to the pillar 24 or the interposition pillar 26. The work process for constructing the heat insulation wall structure 2 may be appropriately set in consideration of work efficiency and the like.

It is explanatory drawing which showed one Embodiment of the heat insulation wall structure of the wooden building which concerns on this invention. It is the elements on larger scale which showed the holding body vicinity in FIG. It is explanatory drawing which showed one Embodiment of the heat insulation wall structure of the wooden building which concerns on this invention. It is explanatory drawing which showed one Embodiment of the heat insulation wall structure of the wooden building which concerns on this invention. It is explanatory drawing which showed one Embodiment of the holding body which concerns on this invention. It is explanatory drawing which showed one Embodiment of the holding body which concerns on this invention.

Explanation of symbols

2 Insulating wall structure 4 Holding body 6 Crank-shaped bent portion 8 Attaching surface 10 Second attaching surface 12 First side surface 14 Second side surface 16 Connecting surface 18 Insulating member 20 Insulating panel 22 Second insulating panel 24 Column 26

Claims (6)

  It consists of a pair of opposing columnar holders and a heat insulating member fitted between the holders, and a contact portion between the holder and the heat insulating panel is a surface substantially orthogonal to the pair of holders and the heat insulating panel. Above, the heat insulation wall structure of the wooden building characterized by having at least 1 or more crank-shaped bending part.   The heat insulating structure for a wooden building according to claim 1, wherein a second heat insulating panel that covers the pair of holding bodies and the heat insulating member is attached to the pair of holding bodies.   The said holding body has the sticking surface which affixes said 2nd heat insulation panel, and the 2nd sticking surface located in parallel with this sticking surface, The heat insulation of the wooden building of Claim 2 characterized by the above-mentioned. Construction.   The heat insulating structure for a wooden building according to any one of claims 1 to 3, wherein the holding body is attached to a pillar or a stud of a wooden building.   The heat insulating wall structure of a wooden building according to any one of claims 1 to 4, wherein the heat insulating member is formed by stacking a plurality of panel heat insulating materials.   On the surface side of the holding body in contact with the heat insulating member, a first side surface orthogonal to the pasting surface edge, a second side surface orthogonal to the second pasting surface edge, the first side surface and the second side A connecting surface connecting the side surfaces, and the connecting surface is one surface orthogonal to the first side surface edge and the second side surface edge, or a group of surfaces in which a plurality of surfaces are orthogonal to each other in a bellows shape. The heat insulation wall structure of the wooden building in any one of Claims 1-5 characterized by the above-mentioned.

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