JP6607824B2 - Outer insulation structure - Google Patents

Description

  The present invention relates to a heat insulating structure for a wooden building, and in particular, thickens the heat insulating layer toward the upper layer of the wooden building where the temperature difference between the inside and outside of the room increases, and the heat insulating layer is less likely to sink due to its own weight. TECHNICAL FIELD The present invention relates to an outer heat insulating structure that prevents heat from being released.

  The following structure is known as an outer heat insulating structure attached to the outer wall of a conventional existing wooden building. As shown in FIG. 5A, the existing wall 101 includes an interior material 102, a spacer 103 fixed to the outer surface of the interior material 102, and a face material 104 fixed to the outer surface of the spacer 103. Yes. And the crosspiece 105 is being fixed to the face material 104 with the screw | thread 111 (refer FIG.5 (B)) as a reinforcing material. The upper heat insulating panel 106 and the lower heat insulating panel 107 are fixed to the face material 104 with an adhesive so as to sandwich the horizontal rail 105.

  As shown in FIG. 5 (B), the upper and lower heat insulating panels 106 and 107 are twice as thick as the horizontal beam 105, and there is a gap between the panels 106 and 107 on the outer surface of the horizontal beam 105. A heat insulating piece 108 for filling is embedded. A lateral trunk edge 109 is disposed outside the horizontal rail 105 along the gap filling thermal insulation piece 108, and the horizontal trunk edge 109 penetrates the gap filling thermal insulation piece 108 and reaches the horizontal rail 105. 110 is fixed. The horizontal bar 105 is fixed by a screw 111 that reaches the intermediate pillar 103.

  A wall covering material 112 is disposed so as to cover both the panels 106 and 107 and the horizontal trunk edge 109, and is fixed to the horizontal trunk edge 109 by a metal fixture (not shown). With this structure, an external heat insulating structure is realized with respect to the existing wall 101 (see, for example, Patent Document 1).

  Moreover, the following structure is known as a conventional wooden structure of an outer insulating layer. As shown in FIG. 6A, normally, a plurality of intermediate pillars 123 disposed between adjacent through pillars 121 and 122 are disposed on the outdoor side of the heat insulating panel 124, and A space between the pillars 122 is open to the indoor side. The heat insulating panel 124 includes a plate-shaped heat insulating material 124b, an interior surface material 124a attached to the main surface on the indoor side of the heat insulating material 124b, and an exterior surface material attached to the main surface on the outdoor side of the heat insulating material 124b. 124c. As shown in the drawing, an exterior material 125 is fixed to the side surface of the spacer 123 on the outdoor side.

  As shown in FIG. 6B, the base 126 is placed on the foundation 127 and fixed to the foundation 127 via anchor bolts or the like. The through pillar 121 is erected on the base 126. A receiving material 128 is fixed to the side surface of the base 126 on the outdoor side, and a part of the receiving material 128 is located on the upper surface of the foundation 127. On the other hand, between the adjacent through pillars 121 and 122, a body insert 129 is passed and fixed in the horizontal direction. The receiving material 130 is fixed to the side surface of the torso 129 on the outdoor side. As illustrated, the upper end side of the intermediate post 123 is fixed to the receiving material 130, and the lower end side of the intermediate post 123 is fixed to the receiving material 128 (see, for example, Patent Document 2).

Japanese Patent No. 5327665 JP-A-2015-209699

  As described above, as a heat insulation structure of the outer wall of a wooden building, a filled heat insulation structure in which a heat insulating material such as glass wool is filled between adjacent pillars or between the pillars and the pillars, and a polystyrene foam on the side surface on the outdoor side of the pillars and the pillars For example, there is an outer heat insulating structure in which foam panel heat insulating materials such as the above are bonded.

  5 (A) and 5 (B), in the outer heat insulating structure shown in FIGS. 5 (A) and 5 (B), a horizontal beam 105 as a reinforcing material is fixed to the outdoor side surface member 104 of the existing wall 101, and the upper heat insulating panel is sandwiched between the horizontal beam 105 106 and the lower heat insulation panel 107 are being fixed to the face material 104 via the adhesive agent. And in the arrangement | positioning area | region of the horizontal rail 105, the heat insulation piece 108 for gap filling and the horizontal trunk | drum 109 are further arrange | positioned on the outdoor side. With this structure, an outer heat insulation structure is realized with respect to the existing wall 101.

  However, in the arrangement region of the upper heat insulation panel 106 and the lower heat insulation panel 107, a heat insulation effect can be obtained by the thick heat insulating material, but in the arrangement region of the horizontal rail 105, wood is mainly arranged in an overlapping manner. Specifically, in the outer heat insulating structure using the upper and lower heat insulating panels 106 and 107, the horizontal rail 105 and the horizontal trunk edge 109 are overlapped to support the upper and lower heat insulating panels 106 and 107 and the wall exterior material 112. . In the above-described outer heat insulating structure, the gap filling heat insulating piece 108 is disposed between the horizontal rail 105 and the horizontal trunk edge 109, but its thickness is significantly thinner than the upper and lower heat insulating panels 106 and 107, and the heat insulating effect is obtained. May be difficult to obtain and may become a thermal bridge.

  In addition, after processing the gap filling heat insulating piece 108 in accordance with the shape of the cross beam 105, it is necessary to embed it in the gap between the upper and lower heat insulating panels 106 and 107, which complicates the field work and makes it difficult to reduce the manufacturing cost. There is also. On the other hand, in order to solve the problem as a thermal bridge, when the thickness of the horizontal beam 105 is reduced and the thickness of the gap filling heat insulating piece 108 is increased, the horizontal beam 105 of the screw 110 that fixes the horizontal trunk edge 109 is moved to. There is a risk that a sufficient driving depth will not be secured. The wall exterior material 112 is fixed to the horizontal trunk edge 109, but there is a risk that sufficient attachment strength may not be obtained.

  6 (A) and 6 (B), as shown in FIG. 6 (B), in the arrangement region of the receiving members 128 and 130, a plurality of arrangements arranged on the outdoor side with respect to the heat insulation panel 124. In order to secure the attachment strength of the intermediate pillar 123 and the wall exterior material 112, the intermediate pillar 123 is fixed to the receiving members 128 and 130. With this structure, the base 126, the receiving material 128, and the intermediary column 123 become a continuous thermal bridge, and the trunk 129, the receiving material 130, and the intermediary column 123 become a continuous thermal bridge, and there is a problem that the heat insulation effect is reduced. .

  Furthermore, in the above-described outer heat insulating structure shown in FIGS. 5 and 6, since the heat insulating panels 101, 106, 107, and 124 are used, the heat insulating structure has the same thickness from the lower layer to the upper layer of the wooden building. ing. And in wooden buildings, especially during heating, warm air gathers upward in the room, so the higher the level of the wooden building, the greater the temperature difference from the outside, and the indoor heat is released to the outside. It is easy to cause condensation and the like. In addition, thick timber such as eaves is used for the upper layer of a wooden building, and if these timbers are not covered with a heat insulating material, there is a risk that it will be difficult to prevent the release of heat to the outdoors. is there.

  Moreover, as above-mentioned, in the heat insulation structure of all the same thickness toward the upper layer from the lower layer of a wooden building, there exists a subject that it is easy to thermally radiate in the upper layer where heat insulation thickness is required, and a heat insulation effect is easy to reduce. On the other hand, in order to solve this problem, when a heat insulation panel is selected according to the heat insulation thickness of the upper layer of the wooden building, the lower layer of the wooden building has a heat insulation thickness more than necessary, and the material cost is lower. There is a problem that the construction cost is difficult to increase. Furthermore, since the heat insulation panel becomes thicker, the horizontal rail 105 and the horizontal trunk edge 109 that support the heat insulation panel and the like become thicker, and it is necessary to take measures against the problem of the thermal bridge.

  The present invention has been made in view of the above circumstances, using a heat insulating material filled by blowing glass wool or the like, and increasing the thickness of the heat insulating material toward the upper layer of the wooden building, An object of the present invention is to provide an outer heat insulating structure that greatly reduces the settlement due to the weight of the material and improves the heat insulating effect.

  In the outer heat insulating structure of the present invention, at least a foundation of a wooden building, a base fixed to the upper surface of the foundation, a plurality of vertical members fixed to the upper surface of the foundation, and fixed to the plurality of vertical members An outer heat insulating structure constructed on the outdoor side of the inner wall fixed via the vertical member and the horizontal member, the lower end side is fixed to the base, and the upper end side is the horizontal member A plurality of fusible materials fixed to the wooden building at the same height or above the material, a mesh material stretched over the plural fusking materials, and a space between the inner wall and the mesh material; A heat insulating material that covers a side surface on the outdoor side of the material, and the heat insulating material is characterized in that the upper layer is thicker than the lower layer of the wooden building.

  Further, in the outer heat insulating structure of the present invention, the cross member is an eaves girder, a plurality of rafters are fixed to the upper surface of the eaves girder, and the upper end side of the kushi material is the rafters on the outdoor side of the base. It is characterized by being fixed to.

  Further, in the outer heat insulating structure of the present invention, the cross member is a trunk, the eaves of the wooden building are formed above the trunk, and the upper end side of the plaster material is on the outdoor side of the base. It is fixed to the eaves end of.

  In the outer heat insulating structure of the present invention, the lower end side of the plaster material is fixed to the side surface on the outdoor side of the base, a part of the plaster material is disposed on the upper surface of the base body, and the mesh material is It is stretched on the outdoor side of the softening material, and has a space in which the heat insulating material is disposed between the base and the mesh material.

  The outer heat insulating structure of the present invention is constructed on the outdoor side of the inner wall of the wooden building, and the upper end side of the fusible material of the outer heat insulating structure is fixed to the wooden building located at the same height or above the cross member. . And the thickness of the heat insulating material of an outer-layer heat insulation structure is arrange | positioned so that the upper layer may become thicker than the lower layer of a wooden building. This structure makes it difficult for the thermal insulation to sink significantly due to its own weight even when the outer thermal insulation structure has been used for many years. Is greatly reduced, and the heat insulation performance is greatly improved.

  Further, in the outer heat insulating structure of the present invention, when the cross member is an eaves girder, the upper end side of the fusible member of the outer heat insulating structure is fixed to the rafter on the outdoor side of the base. With this structure, the heat insulating material is thicker in the upper layer than the lower layer of the wooden building, and the heat insulating material can cover the outdoor side of the eaves girder.

  Further, in the outer heat insulating structure of the present invention, even if the cross member is a torso and there is no rafter at a suitable position above it, the upper end of the fusuma material is utilized by using the eaves at a suitable position above the torso. The side can be fixed. With this structure, the heat insulating material is thicker in the upper layer than the lower layer of the wooden building, and the heat insulating material can cover the outdoor side of the torso.

  Moreover, in the outer-layer heat insulation structure of this invention, the lower end side of the plastering material is fixed to the side surface of the foundation on the outdoor side, and a part thereof is disposed on the upper surface of the foundation body. With this structure, there is a space for disposing a heat insulating material between the base and the mesh material, and the heat insulating performance as a wooden building can be improved.

It is sectional drawing explaining the wooden building in which the outer-layer heat insulation structure of one Embodiment of this invention was constructed | assembled. It is a perspective view explaining the wooden building in which the outer-layer heat insulation structure of one Embodiment of this invention was constructed | assembled. BRIEF DESCRIPTION OF THE DRAWINGS It is a perspective view explaining the wooden building in which (A) outer-layer heat insulation structure of one Embodiment of this invention was constructed | assembled, (B) It is sectional drawing explaining an outer-layer heat insulation structure. BRIEF DESCRIPTION OF THE DRAWINGS It is a perspective view explaining the wooden building in which (A) outer-layer heat insulation structure of one Embodiment of this invention was constructed | assembled, (B) It is sectional drawing explaining an outer-layer heat insulation structure. It is the (A) perspective view and (B) sectional view explaining the wooden building in which the conventional external thermal insulation structure was constructed. It is the (A) perspective view and (B) sectional view explaining the wooden building in which the conventional external thermal insulation structure was constructed.

  Hereinafter, an outer-layer heat insulating structure according to an embodiment of the present invention will be described in detail with reference to the drawings. In the description of the embodiment, the same reference numerals are used for the same members in principle, and repeated descriptions are omitted.

  FIG. 1 is a cross-sectional view showing an outline of the wooden building 1 of the present embodiment. The wooden building 1 has, for example, a one-story structure, and an outer heat insulating structure 3 is constructed on the outdoor side of the inner wall 2 (see FIG. 3B) of the wooden building 1. In FIG. 1, the outer heat insulating structure 3 is constructed for the inner walls 2 on the two lateral sides of the wooden building 1, but the outer heat insulating structure 3 is also applied to the inner walls 2 on other side surfaces not shown. Has been built. An outer wall panel 4 is attached to the outdoor side of the outer heat insulating structure 3. In the following description, for example, as vertical members of the wooden building 1, there are through pillars 5, inter-columns 6 and the like, and as cross members of the wooden building 1, eaves girder 11, torso 12, and shed beam 16. Etc.

  Although details will be described later, the outer heat insulating structure 3 is mainly composed of a plurality of outer insulating heat insulating woods (hereinafter referred to as “fushik materials 7”) arranged on the outdoor side of the through pillars 5 and the intermediary pillars 6. And a mesh material 8 disposed on the outdoor side of the softening material 7, and a heat insulating material 9 such as glass wool filled between the inner wall 2 and the mesh material 8. The mesh material 8 is not limited to the case where the mesh material 8 is disposed on the outdoor side surface of the softening material 7, and may be disposed on the indoor side of the softening material 7.

  As shown by sand-like hatching, in the thermal insulation structure 3, the thickness of the heat insulating material 9 increases toward the upper layer of the wooden building 1, for example, is constructed in an inverted triangular shape with respect to the inner wall 2. Yes. Here, in the wooden building 1, when the outer heat insulating structure 3 is not provided, the through pillar 5 and the intermediary pillar 6 are heated because a heat insulating material (not shown) is disposed between the pillars 5 and 6. Become a bridge. In addition, the base 10, the eaves girder 11 and the torso 12 of the wooden building 1 are not covered with the heat insulating material, and thus become a thermal bridge. And the through pillar 5, the interposition pillar 6, the base 10, the eaves girder 11, and the torso 12 are thick compared with other pillars, the exposed area becomes large, and the heat insulation performance as the wooden building 1 is deteriorated. End up.

  Therefore, in the wooden building 1 of the present embodiment, the lower end side of the filler material 7 is fixed to the base 10 with screws or the like, and the upper end side of the filler material 7 is fixed to the rafter 13 fixed to the upper surface of the eaves beam 11. It is fixed with screws. And since the heat insulating material 9 covers at least the through pillar 5, the intermediary pillar 6, the base 10, the eaves girder 11 and the trunk 12 from the outdoor side, the thermal bridge as the wooden building 1 is greatly reduced, and the heat insulating performance is improved. Greatly improved.

  In particular, when the wooden building 1 is heated, warm air flows to the upper layers of the room and gathers. Therefore, even when the lower layer where the resident lives is at an appropriate temperature, the upper layer of the room is warmer than the lower layer, and there is a difference in temperature between the indoor and the indoor. Occur. On the other hand, outside the wooden building 1, the ground is warmer and colder toward the sky, and the temperature is opposite to that in the room. And as the upper layer of the wooden building 1 becomes, the heat of the room is easily released to the outside due to the difference in temperature from the outside, but as described above, the thickness of the heat insulating material 9 increases toward the upper layer of the wooden building 1. By making the structure thicker, the heat insulating performance of the wooden building 1 is improved. In addition, in the lower layer of the wooden building 1, the temperature difference with the outdoors is smaller than that of the upper layer, and accordingly, the thickness of the heat insulating material 9 can be reduced, so that the material cost can be suppressed and the building cost can be reduced.

  Further, as shown on the right side surface of the wooden building 1, when the rafter 13 has a slightly overhanging structure than the outer wall panel 4, the upper end side of the covering material 7 is fixed to the eaves 14. Thus, the outer heat insulating structure 3 can be constructed. And although the outer heat insulating structure 3 is not constructed in the wooden building 1 above the eaves 14, the heat insulating material 9 covers up to the torso 12 below the eaves 14, so that the wooden building 1 is a little. Thermal insulation performance is improved.

  In addition, in the right side surface of the wooden building 1, as in the case of the left side surface, when the rafter 13 extends to a place where the outer heat insulating structure 3 can be constructed, the outer heat insulating structure is extended to the upper layer of the wooden building 1. It is possible to construct 3.

  FIG. 2 is a perspective view showing an outline of the wooden building 1 according to the present embodiment and showing a state before the softening material 7 of the outer heat insulating structure 3 is fixed. FIG. 3 (A) is a perspective view showing the outline of the wooden building 1 of the present embodiment and showing a state in which the wiping material 7 of the outer heat insulating structure 3 is fixed. FIG. 3B is an enlarged cross-sectional view showing a part of the outer heat insulating structure 3 of the wooden building 1 shown in FIG. FIG. 4A is a perspective view showing an outline of the wooden building 1 of the present embodiment and a state in which the heat insulating material 9 is filled. FIG. 4B is an enlarged cross-sectional view showing a part of the outer heat insulating structure 3 of the wooden building 1 shown in FIG.

  2, it is the perspective view which looked at the wooden building 1 shown in FIG. 1 from the left back, and has illustrated some wooden buildings 1. In FIG. The base 10 is placed on the foundation concrete 15 so as to have a space on the outdoor side, and is fixed to the foundation concrete 15 via an anchor bolt or the like. A through pillar 5 is erected on the upper surface of the base 10 at regular intervals, and the lower end side of the through pillar 5 is fixed to the base 10 with screws or the like. Similarly, a plurality of intermediate pillars 6 are set up at regular intervals between adjacent through pillars 5, and the lower end side of the intermediate pillars 6 is fixed to the base 10 with screws or the like. On the other hand, the upper ends of the through pillars 5 and the inter-columns 6 are fixed to the eaves girder 11 and the roof beam 16 with screws or the like.

  The plurality of rafters 13 are fixed to the upper surfaces of the eaves girder 11 and the purlin 17 with screws or the like at the same intervals as the adjacent through pillars 5 and the intermediary pillars 6. For example, one end side of the rafter 13 protrudes from the inner wall 2 (see FIG. 3A) on the left side surface of the wooden building 1 and is used as a fixing region for the fusking material 7. On the other hand, one end side of the eaves girder 11 and the main building 17 protrudes from the inner wall 2 (see FIG. 3A) on the rear side surface of the wooden building 1, and the rafters 13 fixed to the protruding region are soft materials. 7 is used as a fixed area.

  As shown in FIG. 3A, a plurality of fusible materials 7 are fixed to the base 10 and the rafter 13 so as to surround the outdoor side of the inner wall 2 of the wooden building 1. As described above, the filler material 7 is wood that constitutes the framework of the outer heat insulating structure 3. The lower end side of the plaster material 7 is fixed to the outdoor side surface of the base 10 with screws or the like, and a part of the lower end side of the plaster material 7 is arranged on the upper surface of the foundation concrete 15 on the outdoor side from the base 10. On the other hand, the filler material 7 is disposed, for example, at the same interval as the adjacent through pillars 5 and the intermediate pillars 6, and the upper end side of the filler material 7 is fixed to the rafter 13 with screws or the like.

  As shown in FIG. 3B, the inner wall 2 includes, for example, an interior board material 2A, a heat insulating material 2B such as glass wool, and a structural plywood 2C. The interior board material 2A is fixed from the indoor side to the through-pillar 5 and the inter-column 6 with screws or the like, and the structural plywood 2C is fixed to the through-column 5 and the inter-column 6 from the outdoor side with screws. The heat insulating material 2B is between the adjacent through pillars 5 and the intermediary pillars 6 and is filled in a region sandwiched between the interior board material 2A and the structural plywood 2C.

  Also, as shown in FIGS. 4A and 4B, mesh material 8 made of mesh is stretched on the outdoor side surface of the filler material 7 so that the heat insulating material 9 filled by the blowing method does not leak. Has been passed. As described above, the filler material 7 is fixed to the base 10 and the rafter 13 by screws or the like, but the filler materials 7 are connected to each other by the mesh material 8.

  As shown in FIG. 3 (B), a structure in which at least a part of the base 10 is covered with the heat insulating material 9 is realized by having a space filled with the heat insulating material 9 between the base 10 and the mesh material 8. Is done. In addition, by having a space filled with the heat insulating material 9 between the eaves girder 11 and the mesh material 8, a structure in which most of the eaves girder 11 is not a thermal bridge is realized.

  Note that, as shown in FIG. 3A, the structural plywood 2C having a substantially triangular shape with respect to the rafter 13 and the roof beam 16 is also formed on the rear side surface of the wooden building 1 in accordance with the inclination angle of the rafter 13. It is fixed with screws. With this structure, there is a space in which the heat insulating material 9 is filled between the structural plywood 2C and the mesh material 8, so that a structure in which most of the roof beam 16 does not become a thermal bridge is realized.

  As shown in FIG. 4A, in the outer heat insulating structure 3 of the wooden building 1, the heat insulating material 9 is filled in the space between the inner wall 2 and the mesh material 8 by a blowing method. Examples of the heat insulating material 9 include glass wool, cellulose fiber, and rock wool. In this embodiment, for example, glass wool is used. The heat insulating material 9 is filled with air from the upper layer to the lower layer of the outer heat insulating structure 3. However, by using the mesh material 8, the air is released to the outside, and the heat insulating material 9 is exposed to the outer heat insulating structure 3. It is filled from the lower layer. As described above, when the heat insulating material 9 is pumped from the upper layer of the outer heat insulating structure 3, the heat insulating material 9 is stacked and filled in a dense state, and the structure is difficult to sink. In addition, the mesh material 8 can be arrange | positioned with respect to the side surface perimeter of the wooden building 1 by arrange | positioning so that the corner part of the wooden building part 1 may be covered.

  As shown in FIG. 4B, the outer heat insulating structure 3 has an inverted triangular shape, and the heat insulating material 9 increases in thickness from the lower layer to the upper layer. On the side of the illustrated wooden building 1, the upper end side of the filler material 7 is fixed to the rafter 13 disposed on the upper surface of the eaves girder 11, and the fixing location is at least the same height or eaves girder By being positioned above 11, the side surface of the eaves girder 11 on the outdoor side is covered with the heat insulating material 9 almost to the upper end.

  Here, as described above, the heat insulating material 9 is stacked and filled in a dense state, and is difficult to sink, but the outer heat insulating structure 3 has been used for many years, so that the heat insulating material 9 has its own weight. Will sink. And the amount of sinking of the upper heat insulating material 9 is less than that of the lower heat insulating material 9. The outer heat insulating structure 3 has an inverted triangular shape. The width of the outer heat insulating structure 3 increases toward the upper layer. In other words, the upper insulating material 9 sinks more than the lower insulating material 9 because the cross-sectional area increases. Less. That is, for example, compared to the case of the outer heat insulating structure having the same width from the lower layer to the upper layer, in the outer heat insulating structure 3 of the present embodiment, the amount by which the upper heat insulating material 9 sinks is significantly reduced. The

  Furthermore, as described above, the lower end side of the fusible material 7 is fixed to the outdoor side surface of the base 10 with screws or the like, and the space between the base 10 and the mesh material 8 is filled with the heat insulating material 9. have. And the heat insulating material 9 is reliably filled also into the narrow clearance gap between the said base 10 and the mesh material 8 unlike the heat insulation panel material by filling with the blowing method.

  With this structure, most of the outdoor side of the eaves girder 11, the torso 12 and the roof beam 16 which are disposed on the upper layer of the wooden building 1 and easily become a thermal bridge are covered with the heat insulating material 9, and the heat insulating material 9 is covered for a long time. It becomes a structure that is hard to sink even when used. And as the wooden building 1 goes to the upper layer, the temperature difference from the outside increases, and measures for heat dissipation are necessary. Although the influence as a thermal bridge becomes large, the countermeasure is realized by the outer heat insulating structure 3 of the present embodiment. Similarly, although the thickness as the heat insulating material 9 is reduced, the heat insulating performance as the wooden building 1 is improved by covering part of the side surface of the base 10 on the outdoor side with the heat insulating material 9.

  Although not shown, after the above-described blowing method is completed, a ventilating trunk edge is fixed with screws or the like to sandwich the mesh material 8 on the outdoor side surface of the filler material 7, The moisture permeable waterproof sheet and the outer wall panel 4 are fixed.

  In the outer heat insulating structure 3, the lower end side of the filler material 7 is fixed to the base 10, and a part thereof is disposed on the upper surface of the foundation concrete 15. Further, the fusible material 7 is connected to each other by the mesh material 8, and the heat insulating material 9 is filled between the inner wall 2 and the mesh material 8 in a dense state. That is, the outer heat insulating structure 3 becomes an integrated structure through the heat insulating material 9 and the mesh material 8 filled in a dense state, and thus has a structure excellent in earthquake resistance. For example, even when a roll due to an earthquake is applied to the outer heat insulating structure 3, the individual fusible materials 7 are shaken in the same direction via the mesh material 8, so that the structure is strong in earthquake resistance.

  Moreover, although not shown in figure, it may be a case where several pieces of the fusible material 7 are fixed to the wood constituting the bay window frame of the wooden building 1 with screws or the like. 3 is further integrated with a sturdy portion of the wooden building 1 other than the base 10 to provide a structure excellent in earthquake resistance.

  Moreover, although the case of the inverted triangle shape was demonstrated as a shape of the outer-layer heat insulation structure 3, it is not limited to this case. The shape of the outer heat insulating structure 3 may be, for example, a trapezoidal shape. Even in this case, the heat insulating material 9 obtains the above-described effect because the upper layer is thicker than the lower layer of the wooden building 1. be able to. In addition, various modifications can be made without departing from the scope of the present invention.

DESCRIPTION OF SYMBOLS 1 Wooden building 2 Inner wall 2A Interior board material 2B Thermal insulation material 2C Structural plywood 3 Outer thermal insulation structure 4 Outer wall panel 5 Street pillar 6 Intermediary pillar 7 Overlay material 8 Mesh material 9 Thermal insulation material 10 Base 11 Girder 12 Trunk 13 Rafter 14 Eaves 15 Foundation concrete 16 Hut beam 17 Purlin

Claims (4)

Comprising at least a foundation of a wooden building, a base fixed to the upper surface of the foundation, a plurality of vertical members fixed to the upper surface of the base, and a cross member fixed to the plurality of vertical members, In the outer heat insulating structure constructed on the outdoor side of the inner wall fixed through the vertical member and the cross member,
The lower end side is fixed to the base, the upper end side is the same height as the cross member or a plurality of fusible materials fixed to the wooden building above, the mesh material stretched across the plural fusible materials, A heat insulating material that is filled between an inner wall and the mesh material and covers a side surface on the outdoor side of the cross member, and the thickness of the heat insulating material is thicker in the upper layer than in the lower layer of the wooden building Outer insulation structure characterized by that.   The cross member is an eaves girder, and a plurality of rafters are fixed to an upper surface of the eaves girder, and an upper end side of the plaster material is fixed to the rafters on the outdoor side of the base. The outer heat insulating structure according to 1.   The cross member is a trunk, the eaves of the wooden building are formed above the torso, and the upper end side of the softening material is fixed to the eaves on the outdoor side of the base. The outer insulation structure according to claim 1.   The lower end side of the filler material is fixed to the side surface of the foundation on the outdoor side, a part of the filler material is disposed on the upper surface of the foundation body, and the mesh material is stretched on the outdoor side of the filler material, The outer heat insulating structure according to any one of claims 1 to 3, wherein a space in which the heat insulating material is disposed is provided between the base and the mesh material.

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