JP5686979B2 - Thermal insulation structure of building - Google Patents

Description

The present invention also relates to a heat-insulating structure of the building.

  In a building such as a house, the outer peripheral part of the building may have a heat insulating structure in order to ensure heat insulating performance. As this type of heat insulating structure, a configuration is known in which a wall insulating material made of glass wool is disposed in a wall space between an outer wall panel provided on the outdoor side and an inner wall panel provided on the indoor side. (For example, Patent Document 1). Specifically, since long building materials such as pillars constituting the framework of the building are installed in the above-mentioned space in the wall, the heat insulating material in the wall avoids such long building material. Are disposed in the wall space.

  In addition, the outer wall panel includes an outer wall material that forms an outdoor surface, and a rectangular frame-shaped outer wall frame that is fixed to the back surface side (indoor surface side) of the outer wall material, and the outer wall frame is installed in the inner space. The outer wall panel is fixed to the building by being connected to the long building material.

JP 2008-115636 A

  By the way, as mentioned above, since the heat insulating material in a wall is arrange | positioned avoiding a long building material in the space in a wall, the heat insulation performance is not ensured in the installation site | part of a long building material. Therefore, in the same part, a long building material becomes a thermal bridge (heat bridge), and there exists a possibility of causing a heat insulation fall.

  Therefore, it is also conceivable to suppress a decrease in heat insulation around the long building material by, for example, winding a heat insulating material made of glass wool around the long building material, but as described above, the long building material has an outer wall panel. In this case, the outer wall frame is attached with glass wool interposed between the long building material and the outer wall frame. In such an attachment configuration, since the attachment position of the outer wall frame to the long building material varies depending on the compression state (the degree of compression) of the glass wool, it may be difficult to attach the outer wall frame to a predetermined position. That is, the attachment property of the outer wall frame may be impaired.

  Such a problem may also occur in a long building material installed on the indoor side of the building. The long building materials that make up the building framework are connected to each other, so when heat is transferred from the outside to the long building materials installed on the outdoor side, the heat is transferred to the long building material on the indoor side. It is assumed that Therefore, the long building material on the indoor side may become a thermal bridge, and various members such as an inner wall panel are attached to the building material.

The present invention has been made in view of the above circumstances, the principal of providing a heat insulating structure of the building can be achieved, improving the heat insulating properties without impairing the mounting of the member with respect to the elongated building materials It is the purpose.

  In order to solve the above-mentioned problems, in the heat insulating structure of the building of the first invention, a sheet-like heat insulating material is attached to the long building material constituting the skeleton of the building in a state of covering the building material. It is characterized by.

  According to this invention, the sheet-like heat insulating material is used as a heat insulating material which covers the elongate building material to which various members, such as a wall panel, are attached. Therefore, unlike the case where glass wool is used as such a heat insulating material, even if a heat insulating material is interposed between the building material and a member attached to the building material, it is possible to prevent variation in the mounting position. Thereby, heat insulation can be improved without impairing the attachment property of the member to the long building material.

  In the heat insulation structure of a building according to a second invention, in the first invention, the sheet-like heat insulating material is covered with a non-woven sheet provided in contact with the outer peripheral surface of the building material and the outer side of the non-woven sheet. An airtight sheet is provided.

  According to the present invention, since the airtight sheet is covered on the outside of the nonwoven fabric sheet provided in contact with the outer peripheral surface of the building material, a large number of air bubbles formed between the fibers of the nonwoven fabric sheet are caused by the airtight sheet. As a result, an air layer is formed inside the nonwoven fabric sheet. Thereby, since this sheet-like heat insulating material can obtain heat insulating performance by this air layer, it can be said that it is a practically preferable configuration when obtaining the sheet-like heat insulating material of the first invention.

  The heat insulation structure of a building according to a third invention is the heat insulation sheet of the second invention, wherein the airtight sheet is made of a heat shrinkable sheet that shrinks when heated, and the heat shrinkable sheet is heat shrunk in the sheet-like heat insulating material. It is attached to the building material in a state where it is in a closed state.

  According to this invention, since the airtight sheet | seat covered on the outer side of a nonwoven fabric sheet was comprised with the heat-shrinkable sheet, the adhesiveness of the nonwoven fabric sheet with respect to the outer peripheral surface of building materials can be improved by heat-shrinking a heat-shrinkable sheet.

  In the heat insulation structure for a building of a fourth invention according to the third invention, in the state where the sheet-like heat insulating material is attached to the building material, the heat shrinkable sheet is heated in a direction perpendicular to the longitudinal direction of the building material. It is possible to shrink, and heat shrinkage is impossible in the longitudinal direction of the building material.

  According to the present invention, in the sheet-like heat insulating material attached to the building material, the heat-shrinkable sheet is not heat-shrinkable in the longitudinal direction of the building material. It is possible to avoid the inconvenience of shrinking in the longitudinal direction of the building material and exposing the longitudinal end portion of the building material.

  In the heat insulating structure for a building according to a fifth aspect of the present invention, in any one of the first to fourth aspects, the building material is made of a shape steel having an open cross section having a groove, and the groove of the shape steel has a heat insulation in the groove. A material is filled, and the sheet-like heat insulating material covers the shape steel in a state of closing the opening of the groove.

  According to the present invention, since the in-groove heat insulating material is filled in the groove portion of the shaped steel having an open cross section, it is possible to suppress a decrease in the heat insulating property in the groove portion. Moreover, since the sheet-like heat insulating material is attached to the shape steel in a state of closing the opening of the groove portion, it is possible to suppress the outside air from entering the groove portion of the shape steel through the opening. Therefore, the heat insulation fall can be further suppressed. In addition, the effect which prevents that the heat insulating material in a groove | channel falls outside from a groove part by plugging the opening of the groove part of a shape steel with a sheet-like heat insulating material is also acquired.

  A heat insulating structure for a building of a sixth invention is applied to a unit type building constructed by a plurality of building units having beams and columns as the building material in any of the first to fifth inventions, and is adjacent to the building. Each of the adjacent pillars or adjacent beams of the matching building unit is wound with the sheet-like heat insulating material in a state of surrounding each of the pillars or the beams together.

  According to the present invention, the adjacent pillars of adjacent building units or the adjacent beams are wrapped with the sheet-like heat insulating material in a state of surrounding each of the pillars or the beams together. Compared to the case of individually wrapping sheet-like insulation around columns or beams, the work man-hours can be reduced when wrapping sheet-like insulation, and the effect of insulating gaps between adjacent columns or between adjacent beams You can also get

  The building of the seventh invention is characterized in that the heat insulating structure of any one of the first to sixth inventions is used for the building material provided on the outer periphery of the building.

  Of the long building materials that make up the skeleton of the building, the building materials installed on the outer periphery of the building are portions that serve as heat entrances into the building. Therefore, in the present invention, paying attention to this point, the heat insulating structure according to the first to sixth inventions is used for the building material installed on the outer periphery of the building, and thereby the outer periphery of the building that becomes the entrance of heat to the building. The building material is suppressed from becoming a thermal bridge. In this case, it is possible to effectively suppress a decrease in the heat insulating property of the building.

  The heat insulating structure for a building according to an eighth aspect is characterized in that the heat insulating structure for a building according to any one of the first to sixth aspects is used for all the building materials constituting the skeleton of the building.

  According to the present invention, since the heat insulating structures of the first to sixth inventions are used for all building materials constituting the skeleton of the building, it is possible to suppress a decrease in heat insulating properties around all the building materials. In this case, the heat insulation can be further enhanced.

The cross-sectional view which shows the structure of a building outer peripheral part. The figure which shows the attachment location of the heat insulation sheet in a building. The cross-sectional view which shows the state which wound the heat insulation sheet around the pillar. The longitudinal cross-sectional view which shows the state which wound the heat insulation sheet around the big beam. The perspective view which shows a building unit. Sectional drawing which shows the state which wound the heat insulation sheet around H-section steel. The cross-sectional view which shows the state which put together the several pillar and was wound with the heat insulation sheet.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings. In the present embodiment, a unit type building is embodied as a building, and the unit type building is configured by connecting a plurality of building units to each other. First, the building unit will be described with reference to FIG. FIG. 5 is a perspective view showing the building unit.

  As shown in FIG. 5, the building unit 20 includes four columns 21 disposed at the four corners thereof, and four ceiling beams 22 and floor beams 23 that connect the upper end portion and the lower end portion of each column 21, respectively. And. A rectangular frame (frame) is formed by the pillars 21, the ceiling beams 22 and the floor beams 23. The column 21 is made of a square tube-shaped square steel. Moreover, the ceiling beam 22 and the floor beam 23 are made of channel steel having a U-shaped cross section, and are installed so that the openings thereof face each other.

  A plurality of small ceiling beams 24 are bridged at predetermined intervals between the large ceiling beams 22 on the long side of the building unit 20. Similarly, a plurality of floor beams 25 are bridged between the large floor beams 23 on the long side of the building unit 20 at predetermined intervals. A ceiling material (not shown) is supported on the lower surface of each ceiling beam 24, and a floor material (not shown) is supported on each floor beam 25.

  Next, the structure of the outer peripheral part (outer wall part) of the building 10 in this embodiment is demonstrated based on FIG. FIG. 1 is a cross-sectional view showing the configuration of the outer periphery of the building.

  As shown in FIG. 1, in the outer peripheral part of the building 10, the outer wall panel 31 is provided in the outdoor side, and the inner wall panel 32 and the glass wool 33 are provided in the indoor side. The outer wall panel 31 includes an outer wall member 35 that forms an outdoor surface, and an outer wall frame 36 and a bracket 37 that are fixed to the back surface side (indoor surface side) of the outer wall member 35. The outer wall material 35 is made of an exterior material such as a ceramic siding.

  The outer wall frame 36 is configured by connecting a plurality of frame materials made of lightweight steel frames having a U-shaped cross section in a rectangular frame shape. The outer wall frame 36 has an upper end fixed to the ceiling beam 22 and a lower end fixed to the floor beam 23. The bracket 37 is a long member made of a lightweight steel frame material, and is provided so as to extend in the vertical direction at the end portion in the width direction of the outer wall material 35. The bracket 37 is fixed to the column 21 with a bolt or the like.

  The inner wall panel 32 includes an inner wall member 38 that forms an indoor surface, and an inner wall frame 39 that is fixed to the back side of the inner wall member 38. The inner wall material 38 is formed of, for example, a gypsum board. The inner wall frame 39 is fixed to the outer wall frame 36 of the outer wall panel 31 via a wooden brick (not shown). Between the adjacent inner wall members 38, a connecting member 41 that forms an inner wall surface that is flush with the inner wall member 38 is provided. The connecting material 41 is assembled after the building unit 20 is installed at the construction site.

  The glass wool 33 is disposed in an inner wall space 49 between the outer wall panel 31 (specifically, the outer wall member 35) and the inner wall panel 32 (specifically, the inner wall member 38 and the connecting member 41). In FIG. 1, a plurality of glass wools 33 are arranged in the wall space 49. The wall space 49 is partitioned from the outside by a ceiling girder 22 at its upper end and by a floor girder 23 at its lower end. The glass wool 33 is disposed so as to avoid the columns 21 installed in the wall space 49, and specifically, is disposed between the adjacent columns 21 in the building unit 20. Moreover, between the adjacent pillars 21 of the adjacent building unit 20, the glass wool 43 as a heat insulating material between pillars is arrange | positioned. Therefore, heat insulation is secured by the glass wool 33 and 43 in the outer peripheral portion of the building 10.

  By the way, in the outer peripheral part of the building 10, since the glass wool 33 is not provided in the installation part of the pillar 21, it is possible that the pillar 21 becomes a thermal bridge in the installation part of the pillar 21, and the heat insulation property falls. Therefore, it is conceivable to suppress a decrease in heat insulating property by wrapping glass wool around the pillar 21. In that case, the bracket 37 is attached to the pillar 21 in a state where the glass wool is interposed between the pillar 21 and the bracket 37. Therefore, the mounting position of the bracket 37 with respect to the column 21 varies depending on the compression state of the glass wool, and as a result, it may be difficult to mount the bracket 37 at a predetermined position.

  In addition, since the ceiling beam 22 and the floor beam 23 installed on the outer periphery of the building 10 are installed outside the wall space 49, the installation site of these beams 22 and 23 is the same as the installation site of the column 21. Heat insulation by glass wool 33 is not made. Therefore, each of the large beams 22 and 23 is easily a thermal bridge, and an outer wall frame 36 is attached to each of the large beams 22 and 23. Therefore, the above-mentioned problem is a problem that may occur not only for the pillar 21 provided on the outer peripheral portion of the building 10 but also for the large beams 22 and 23.

  So, in this embodiment, it is supposed that a heat insulation sheet will be attached in the state which covered the outer peripheral surface with respect to the pillar 21 and the big beams 22 and 23 which were installed in the building outer peripheral part, respectively. In this case, for example, even if the bracket 37 is attached to the pillar 21 in a state where a heat insulating sheet is interposed between the pillar 21 and the bracket 37, it is possible to prevent variation in the attachment position. Therefore, it is possible to suppress the pillar 21 from becoming a thermal bridge and deteriorating the heat insulating property without impairing the mounting property of the bracket 37. This is a characteristic part of the present embodiment, and the characteristic configuration will be described below.

  In FIG. 2, the attachment location of the heat insulation sheet in the building 10 is shown. In FIG. 2, (a) is a front view showing the mounting location, and (b) is a plan view. As shown in FIGS. 2 (a) and 2 (b), the building 10 of this embodiment is a two-story building including a first floor portion 11 and a second floor portion 12, and a plurality of floors 11 and 12 (FIG. 2). In (b), four building units 20 are arranged side by side. In this embodiment, in each of these building units 20, a heat insulating sheet is attached to each column 21 and each large beam 22, 23 arranged on the outer periphery of the building, and in FIG. 23 are hatched.

  Next, the attachment structure of the heat insulation sheet with respect to the pillar 21 and the large beams 22 and 23 installed in the outer peripheral part of a building is demonstrated.

  First, the attachment structure of the heat insulation sheet with respect to the pillar 21 is demonstrated based on FIG. FIG. 3 is a cross-sectional view showing a state in which the heat insulating sheet is wound around the pillar 21. As shown in FIG. 3, a heat insulating sheet 45 is attached to the column 21 installed on the outer periphery of the building in a state of covering the outer peripheral surface of the column 21. In other words, the heat insulating sheet 45 is wound around the column 21. The heat insulating sheet 45 is formed to have substantially the same length as the length of the column 21, and is wound around the entire length of the column 21.

  The heat insulating sheet 45 includes a non-woven sheet 46 and a heat shrink film 47 superimposed on the surface of the non-woven sheet 46, and is constituted by a laminate sheet in which the non-woven sheet 46 and the heat shrink film 47 are bonded together. Has been. The nonwoven fabric sheet 46 is a sheet material formed by intertwining resin fibers such as polyester, and has a thickness of, for example, 80 to 200 μm. Here, as a fiber which comprises the nonwoven fabric sheet 46, polypropylene, polyethylene, a polyethylene terephthalate, etc. can be used besides polyester.

  The heat-shrinkable film 47 is made of a plastic film that shrinks and deforms when heated and has airtightness, and is made of, for example, a polystyrene film. In the present embodiment, the heat shrink film 47 is formed of a uniaxially stretched plastic film, and the shrink direction is unidirectional. The thickness of the heat shrink film 47 is set to 30 to 60 μm, for example. In addition, as a material of the heat shrink film 47, polyethylene terephthalate, polypropylene, or the like can be used in addition to polyethylene.

  The heat insulating sheet 45 is wound around the column 21 in a state where the nonwoven fabric sheet 46 is in close contact with the outer peripheral surface of the column 21. That is, the heat insulating sheet 45 is wound so that the nonwoven fabric sheet 46 is disposed on the inner peripheral side and the heat shrink film 47 is disposed on the outer peripheral side. The heat insulating sheet 45 is wound around the pillar 21 such that the shrink direction of the heat shrink film 47 is the same as the short direction of the pillar 21, and in the wound state, the heat shrink film 47 is heat shrunk in the same direction. Yes. Due to the heat shrinkage of the heat shrink film 47, the inner nonwoven fabric sheet 46 is pressed toward the outer peripheral surface of the column 21 and is in close contact with the outer peripheral surface. In addition, the heat insulating sheet 45 is joined by bonding or the like with the end portions that are the surplus portions being overlapped with each other while being wound around the column 21.

  In the state where the heat insulating sheet 45 is wound around the column 21, air bubbles are formed in the gaps between the fibers of the nonwoven fabric sheet 46, and the air bubbles are blocked from the outside by a heat-shrinkable film 47 having airtightness. Therefore, in this case, an air layer independent of the outside is formed on the nonwoven fabric sheet 46. And in this embodiment, it becomes the structure by which the heat insulation performance is provided to the heat insulation sheet 45 by this air layer, and it is possible to obtain the outstanding heat insulation effect though it is a sheet form (thin film form).

  Returning to the description of FIG. 1, the bracket 37 of the outer wall panel 31 is fixed to the column 21 around which the heat insulating sheet 45 is wound with a bolt or the like. That is, the bracket 37 is fixed to the column 21 with the heat insulating sheet 45 interposed between the bracket 37 and the column 21.

  Next, the attachment structure of the heat insulation sheet 45 with respect to the big beams 22 and 23 is demonstrated based on FIG. FIG. 4 is a longitudinal sectional view showing a state in which the heat insulating sheet 45 is wound around the large beams 22 and 23.

  Since the method of winding the heat insulating sheet 45 around the beams 22 and 23 is basically the same as the method of winding the column 21, here, differences will be mainly described. As shown in FIG. 4, long beams made of glass wool are provided in the groove portions 52 (specifically, the inner space surrounded by the web and the flange) of the ceiling beam 22 and the floor beam 23 arranged on the outer periphery of the building 10. An inner heat insulating material 51 is disposed so as to fill the groove 52. The heat insulating sheet 45 is formed to have almost the same length as the lengths of the large beams 22 and 23, and is attached to the entire longitudinal direction of the large beams 22 and 23. The heat insulating sheet 45 is wound around the large beams 22 and 23 so as to close the openings 52 a of the groove portions 52 of the large beams 22 and 23, so that the in-beam heat insulating material 51 disposed in the groove portions 52 is exposed to the outside from the groove portions 52. It is prevented from falling off. In this winding state, the in-beam heat insulating material 51 is held in the groove portion 52 in a state compressed by the heat insulating sheet 45.

  Next, an operation procedure when the heat insulating sheet 45 is attached to the column 21 and the large beams 22 and 23 will be described.

  In the present embodiment, after the frame of the building unit 20 is manufactured in the manufacturing factory, the column 21 and the large beams 22 and 23 (hereinafter abbreviated as columns) to be insulated in the frame (that is, installed on the outer periphery of the building). 21) and the like. In this attachment operation, first, an operation of winding the heat insulating sheet 45 around the pillar 21 or the like is performed. In this winding operation, the heat insulating sheet 45 is wound in a state where the nonwoven fabric sheet 46 is in contact with the outer peripheral surface of the column 21 or the like. After the heat insulating sheet 45 is wound, the end portions that are the surplus portions of the wound heat insulating sheet 45 are overlapped and bonded with an adhesive or the like. Thereby, the heat insulation sheet 45 is temporarily fixed to the pillar 21 grade | etc.,.

  After the bonding operation is completed, the heat insulating sheet 45, specifically, the heat shrink film 47 is heated by a hot air heater or the like. By this heating operation, the heat shrink film 47 is heat shrunk in the winding direction, and the nonwoven fabric sheet 46 is brought into close contact with the outer peripheral surface of the column 21 along with the heat shrink. Thereby, the attachment work of the heat insulation sheet 45 is complete | finished. And after attachment of the heat insulation sheet 45, various members, such as the bracket 37 of the outer wall panel 31, are attached to a unit frame, and the building unit 20 is completed.

  Note that it is not always necessary to attach the heat insulating sheet 45 after manufacturing the frame of the building unit 20, and the heat insulating sheet 45 may be attached when the columns 21 and the large beams 22 and 23 are in a single state before the frame is manufactured. Moreover, the heat insulation sheet 45 does not necessarily need to be wound around the column 21 and attached, and the attachment method is arbitrary. For example, the heat insulating sheet 45 may be formed in a cylindrical shape in advance, and the cylindrical heat insulating sheet 45 may be attached by covering the column 21 or the like (in other words, inserting the column 21 or the like inside the heat insulating sheet 45). .

  As mentioned above, according to the structure of this embodiment explained in full detail, the following outstanding effects are acquired.

  The heat insulating sheet 45 was attached to the column 21 and the like in a state of covering the column 21 and the like. That is, the heat insulating sheet 45 was used as a heat insulating material that covers the column 21 to which the bracket 37 or the like is attached. Therefore, unlike the case where glass wool is used as the heat insulating material, even if the heat insulating sheet 45 is interposed between the column 21 or the like and the bracket 37 or the like and the bracket 37 or the like is attached to the column 21 or the like, the mounting position varies. Can be prevented. Thereby, heat insulation can be improved without impairing the attachment of the bracket 37 or the like to the column 21 or the like.

  Since metal has a high thermal conductivity, when a steel frame is used as a long building material, it tends to be a thermal bridge, and the thermal insulation is likely to deteriorate. In that respect, since the heat insulation sheet 45 is attached to the pillar 21 etc. which consists of steel frame materials (specifically steel), said effect can be acquired as a big effect.

  The heat insulation sheet 45 was comprised from the nonwoven fabric sheet 46 provided in the state contacted to outer peripheral surfaces, such as the pillar 21, etc., and the heat-shrink film 47 covered on the outer side of the nonwoven fabric sheet 46. As shown in FIG. In this case, a large number of air bubbles are formed between the fibers of the nonwoven fabric sheet 46, and the air bubbles are blocked from the outside by the heat shrink film 47, thereby forming an air layer inside the nonwoven fabric sheet 46. . Thereby, this heat insulation sheet 45 can obtain heat insulation performance by this air layer. Therefore, it can be said that it is a practically preferable structure when obtaining a sheet-like heat insulating material (heat insulating sheet 45).

  Since the heat-shrinkable film 47 that shrinks when heated as an airtight sheet covered from the outside of the non-woven fabric sheet 46 is used, the heat-shrinkable film 47 is heated and shrunk so that the non-woven sheet 46 adheres to the outer peripheral surface of the column 21 and the like. Can be increased.

  In a state where the heat insulating sheet 45 is attached to the pillar 21 or the like, the heat shrinkable film 47 can be thermally shrunk in a direction orthogonal to the longitudinal direction of the pillar 21 or the like and cannot be heat shrunk in the longitudinal direction of the pillar 21 or the like. did. Thereby, it can avoid that the heat insulation sheet 45 shrinks to the longitudinal direction of the pillar 21 grade | etc., By heat shrinking the heat shrink film 47, and the problem that the longitudinal direction edge part of the pillar 21 grade | etc., Arises arises.

  The heat insulation sheet 45 was comprised with the lamination sheet by which the nonwoven fabric sheet 46 and the heat-shrink film 47 were accumulated and bonded together. In this case, unlike the case where the nonwoven fabric sheet 46 and the heat shrink film 47 are configured as separate bodies and the nonwoven fabric sheet 46 and the heat shrink film 47 are respectively wound around the pillars 21 and the like, the number of work steps for winding the heat insulating sheet 45 is reduced. Reduction can be achieved.

  The in-beam heat insulating material 51 was filled in the groove portions 52 of the large beams 22 and 23, and the heat insulating sheet 45 was wound around the large beams 22 and 23 so as to close the openings 52a of the groove portions 52. In this case, the heat insulation property in the groove part 52 can be suppressed by the in-beam heat insulating material 51 filled in the groove part 52. Moreover, since the heat insulation sheet 45 is wound around the large beams 22 and 23 so as to block the opening 52a of the groove portion 52, it is possible to prevent outside air from entering the groove portions 52 of the large beams 22 and 23 through the opening 52a. Therefore, the heat insulation fall can be further suppressed. Further, by closing the opening 52a of the groove portion 52 with the heat insulating sheet 45, an effect of preventing the in-beam heat insulating material 51 from dropping out from the opening 52a of the groove portion 52 is also obtained.

  The heat insulation sheet 45 was attached to the pillar 21 etc. which were installed in the building outer peripheral part. Of the columns 21 and beams 22 to 25 constituting the skeleton of the building 10, the columns 21 and the large beams 22 and 23 installed on the outer periphery of the building are portions serving as heat entrances to the building 10. In that respect, by setting it as such a structure, since it can suppress that the pillar 21 etc. of the building outer peripheral part used as the entrance and exit of a heat | fever become a thermal bridge, the heat insulation fall of the building 10 can be suppressed effectively.

  The present invention is not limited to the above embodiment, and may be implemented as follows, for example.

  (1) In the above-described embodiment, a laminate sheet in which the nonwoven fabric sheet 46 and the heat shrink film 47 are laminated and bonded as the heat insulating sheet 45 is configured to be wound around the pillar 21 or the like. Alternatively, the nonwoven fabric sheet 46 and the heat shrink film 47 may be configured separately, and the nonwoven fabric sheet 46 may be wound around the pillar 21 and the like, and then the heat shrink film 47 may be wound around the nonwoven fabric sheet 46. Even in this case, if the heat-shrinkable film 47 is heated and shrunk, the non-woven fabric sheet 46 can be brought into close contact with the surface of the column 21 or the like as in the above embodiment.

  Further, the heat-shrinkable film 47 is not necessarily used as the air-tight sheet that covers the outside of the nonwoven fabric sheet 46, and an air-tight sheet that does not have heat-shrinkability may be used. In short, if the sheet placed on the outer side of the nonwoven fabric sheet 46 is an airtight sheet, the air bubbles formed in the fibers of the nonwoven fabric sheet 46 can be blocked from the outside, so that heat insulation performance can be imparted.

  (2) In the above embodiment, the heat insulating structure of the present invention is applied to the pillars 21 and the large beams 22 and 23 as long building materials provided on the outer periphery of the building 10, but instead of or in addition to this, You may apply this heat insulation structure to the elongate building materials installed in the other outer edge parts in the building 10, such as the roof side (the ceiling side of the second floor part 12) of the building 10, the floor side of the first floor part 11, etc. For example, when a heat insulating material made of glass wool is provided on the floor portion of the first floor portion 11, the heat insulating property of the floor portion is ensured by the heat insulating material. Specifically, a heat insulating material is disposed in each region partitioned by the floor beam 25 in the underfloor space surrounded by the floor beam 23. In this case, since the heat insulating material is not disposed at the installation site of the floor beam 23 and the floor beam 25, the floor beams 23 and 25 may become thermal bridges, and heat may enter and exit between the indoor and the outdoor. . Therefore, it can be considered that the heat insulating structure of the present invention is applied to each of the floor beams 23 and 25 (building materials). In this case, since the heat insulation fall around the floor beams 23 and 25 can be suppressed, the heat insulation can be enhanced in the floor portion of the first floor portion 11.

  (3) Also, instead of or in addition to applying the heat insulation structure of the present invention to the long building material provided on the outer periphery of the building, the long building material installed on the indoor side in the building 10 The heat insulating structure of the invention may be applied. For example, it is conceivable to apply the heat insulation structure to all building materials of each building unit 20, that is, to all the columns 21 and all the beams 22 to 25 of each building unit 20. Since the building unit 20 is configured by connecting the columns 21 and the beams 22 to 25 to each other, when heat from the outside is transmitted to the columns 21 and the large beams 22 and 23 installed on the outer periphery of the building, the heat is transmitted. It may be transmitted to the pillar 21 and the beams 22 to 25 installed on the indoor side of the building 10. That is, it is conceivable that the indoor pillar 21 and the beams 22 to 25 can also become thermal bridges. In that respect, if it was set as the structure which attaches the heat insulation sheet 45 to all the pillars 21 and all the beams 22-25 about each building unit 20 in this way, it was installed not only in the building materials installed in the building outer peripheral part but in the indoor side. Since it can also suppress that a building material turns into a thermal bridge, the heat insulation fall can be suppressed further. Thereby, the heat insulation can be further improved.

  (4) In the above embodiment, the in-beam heat insulating material 51 is provided in the groove portions 52 of the large beams 22 and 23 made of channel steel, and the heat insulating sheet 45 is wound around the large beams 22 and 23 so as to close the openings 52a of the groove portions 52. However, as shown in FIG. 6, the in-beam heat insulating material 62 is provided in each groove portion 61 of the large beam 60 made of an H-shaped groove, and the heat insulating sheet 45 is wound around the large beam 60 so as to close the opening 61 a of each groove portion 61. Also good. Even in this case, it is possible to further suppress the deterioration of the heat insulating property at the site where the large beam 60 is installed, and to prevent the upper-beam inner heat insulating material 62 from falling off the groove 61.

  (5) In the said embodiment, although the heat insulation sheet 45 was each wound around each pillar 21 and each large beam 22,23, the adjacent pillars 21 in adjacent building units 20 or adjacent large beams 22,23 are put together. It may be wound around by the heat insulating sheet 45. In FIG. 7, the cross-sectional view of each pillar 21 in the part to which the four building units 20 were connected is shown. In FIG. 7, the columns 21 of the four adjacent building units 20 are gathered and installed, and a heat insulating sheet 45 is wound around the columns 21 so as to surround the columns 21 together. The heat insulating sheet 45 is wound around each column 21 after the building unit 20 is installed at the construction site. In this case, as compared with the case where the heat insulating sheet 45 is individually wound around each column 21, it is possible to reduce the work man-hours when winding the heat insulating sheet 45 and to obtain an effect of insulating the gap between the adjacent columns 21. .

  Further, four column covers 65 are provided on the outer periphery of these four columns 21 (that is, the outer periphery of the heat insulating sheet 45) so as to surround each column 21, and each column cover 65 is attached to the column 21 with a screw or the like. It has been. Specifically, the column cover 65 is attached to the column 21 with the heat insulating sheet 45 interposed between the column cover 65 and the column 21. In this case, it is possible to suppress the four pillars 21 from becoming thermal bridges without impairing the mountability of the pillar cover 65.

  (6) In the above embodiment, the present invention is applied to building materials (columns 21 and large beams 22, 23) made of steel frame (specifically, steel shapes), but the present invention may be applied to building materials made of wood. .

  (7) In the above embodiment, the heat shrink film 47 is directly heated by a hot air heater or the like, but this is changed and the heat shrink film 47 is indirectly heated by heating the column 21 or the like by a hot air heater or the like. You may make it heat.

  (8) In the above embodiment, the heat-shrinkable film 47 is composed of a uniaxially stretched plastic film. However, it may be modified to be composed of a biaxially stretched plastic film that can be thermally contracted in different two directions. Even in this case, the nonwoven fabric sheet 46 can be brought into close contact with the surface of the column 21 or the like by the heat shrinkage of the heat shrink film 47.

  (9) In the above embodiment, an example of application to a unit type building has been described. However, the present invention is also applied to buildings having other structures such as a building constructed by a steel frame construction method and a building constructed by a conventional wooden construction method. The invention can be applied.

  DESCRIPTION OF SYMBOLS 10 ... Building, 20 ... Building unit, 21 ... Pillar as building material, 22 ... Ceiling beam as building material and shape steel, 23 ... Floor beam as building material and shape steel, 45 ... Heat insulation sheet as sheet-like heat insulating material, 46 ... Nonwoven fabric sheet, 47 ... Heat-shrinkable film as an airtight sheet and a heat-shrinkable sheet, 51 ... In-beam heat insulating material as in-groove heat insulating material, 52 ... Groove portion, 62 ... In-beam heat insulating material as in-groove heat insulating material.

Claims (5)

The long building materials that make up the skeleton of the building,
An outer wall panel having an outer wall material and a mounting bracket fixed to the indoor surface side,
In the building material, a heat insulating material is attached in a state of covering the entire longitudinal direction of the building material,
The mounting bracket is a heat insulating structure of a building attached to the building material with the heat insulating material interposed between the building material,
The heat insulating material is a sheet-like heat insulating material having a non-woven sheet provided in contact with the outer peripheral surface of the building material and an air-tight sheet laminated and bonded to the outer surface of the non-woven fabric sheet. Heat insulation structure of the building. The airtight sheet comprises a heat shrinkable sheet that shrinks when heated,
2. The heat insulating structure for a building according to claim 1 , wherein the sheet-like heat insulating material is attached to the building material in a state in which the heat shrinkable sheet is heat shrunk. In a state in which the sheet-like heat insulating material is attached to the building material, the heat shrinkable sheet is heat shrinkable in a direction orthogonal to the longitudinal direction of the building material, and is not heat shrinkable in the longitudinal direction of the building material. The heat insulating structure for a building according to claim 2 , wherein the structure is insulated. The building material is made of a shape steel having an open section having a groove,
The groove portion of the shape steel is filled with a heat insulating material in the groove,
The heat insulating structure for a building according to any one of claims 1 to 3 , wherein the sheet-like heat insulating material covers the shape steel in a state where the opening of the groove is closed. Applied to a unit type building constructed by a plurality of building units having beams and columns as the building material,
2. The sheet-like heat insulating material is wound around adjacent columns or adjacent beams of adjacent building units in a state of surrounding the columns or the beams together. The heat insulation structure of the building as described in any one of thru | or 4 .

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