JP2012092555A - Heat-insulated structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a heat-insulated structure that dispenses with a member serving as a heat bridge in a thermal insulating board in case of fire and that prevents a fall of a wall surface member such as a mesh material superposed on the thermal insulating board, even when the thermal insulating board is melted to become hollowed out.SOLUTION: A heat-insulated structure includes a building frame 1, an adhesive layer 2, a thermal insulating board 3, an adhesive layer 4, an inorganic mesh material 5, and an exterior material 6. One end of a mesh material 7 is attached to the building frame 1 by means of a screw 8 and positioned along upper and lower end surfaces of the thermal insulating board 3, and the other end thereof goes round to a lateral surface on the adhesive layer 4 side of the thermal insulating board 3 so as to be fixed in an embedded state to the adhesive layer 4.

Description

  The present invention relates to a heat insulating structure in which a heat insulating plate is attached to a building frame.

  As means for imparting heat insulation to a building, a structure in which a heat insulating plate made of foamed resin or the like is attached to the wall surface of a building housing is generally known (see Patent Document 1).

  FIG. 5 is a schematic cross-sectional view showing an example of a so-called outer heat insulating structure in which a heat insulating plate is attached to the outer wall surface of the housing. In the figure, 1 is a frame such as a concrete wall, 2 is an adhesive layer, 3 is a heat insulating plate, 4 is an adhesive layer, 5 is a mesh material, 6 is an exterior material, and 10 is a screw. In such a structure, the heat insulating plate 3 is attached to the outer wall surface of the housing 1 via the adhesive layer 2, and the heat insulating plate 3 is fixed to the housing 1 with screws 10 penetrating the heat insulating plate 3. 3 is covered with a mesh material 5, then an adhesive is applied, the mesh material 5 is embedded in the adhesive layer 4 made of the adhesive, and finally the exterior material 6 is pasted by the adhesive layer 4, or The exterior material 6 is formed by applying finish mortar or the like to the surface of the adhesive layer 4.

JP 2009-228371 A

  When a fire occurs in a building having a heat insulating structure as illustrated in FIG. 5, the casing 1, the adhesive layers 2, 4, the mesh material 5, and the exterior material 6 made of concrete walls or the like usually have high incombustibility. Although the heat insulating plate 3 is made of the material, the heat insulating plate 3 is incombustible compared to the casing 1, the adhesive layers 2, 4, the mesh material 5 and the exterior material 6, so that only the heat insulating plate 3 is melted at a relatively early stage. The area occupied by the plate 3 becomes hollow. As a result, the wall member composed of the casing 1, the adhesive layer 4, the mesh material 5, and the exterior material 6 is supported only by the screws 10. However, since there are not many places fixed by the screw 10 for fixing the light heat insulating plate 3, the wall member may fall without being able to support the wall member only with the screw 10. Further, when the screw 10 is made of metal, it becomes a heat transfer path for transferring heat or cold between the housing 1 and the exterior material 6 to the other side, that is, a heat bridge (heat bridge). It is not preferable because it is easy to transfer heat to the surface, causing a combustion expansion, and easily causing condensation.

  As a member for fixing the heat insulating plate 3 to the housing 1, an anchor made of synthetic resin or the like is also used, which is preferable in that it has lower thermal conductivity than a metal screw 10 and does not become a thermal bridge. Since the anchor made of synthetic resin is inferior in nonflammability like the heat insulating plate 3, it easily melts when a fire occurs and the space between the housing 1 and the adhesive layer 4 is completely hollowed out. The wall member falls.

  In the event of a fire, the fall of the wall member such as the exterior material 6 itself is dangerous, and also causes the entire building to collapse. Therefore, even if the heat insulating plate 3 is melted and hollowed out, the wall member A structure that does not fall is desired.

  The problem of the present invention is that there is no member that becomes a thermal bridge in the heat insulating plate, and even if the heat insulating plate melts and becomes hollow in the event of a fire, wall surface members such as exterior materials laminated on the heat insulating plate do not fall, Moreover, it is providing the heat insulation structure excellent in heat insulation which does not produce condensation.

The heat insulating structure of the present invention comprises a housing of a building, a heat insulating plate made of a synthetic resin foam molded body attached to the wall of the housing, and an exterior material or an interior material laminated on the heat insulating plate via an adhesive layer. A heat insulation structure with at least
It is arranged along the upper end surface or the lower end surface of the heat insulating plate, one end is fixed to the housing with screws, the other end side wraps around the side surface of the heat insulating plate on the adhesive layer side, and at least part of the other end side Is provided with an inorganic mesh material embedded and fixed in the adhesive layer.

  Since the heat insulating structure of the present invention does not fix the heat insulating plate to the housing with a metal screw, there is no member that becomes a thermal bridge in the heat insulating plate, reduces the expansion of combustion in the event of fire, and prevents the occurrence of condensation can do. Further, even when the heat insulating plate is melted by a fire, the wall surface member laminated on the heat insulating plate is supported by the mesh material having one end fixed to the housing, so that the wall surface member is prevented from falling, Collapse of the entire building can be suppressed.

It is a cross-sectional schematic diagram of one Embodiment of the heat insulation structure of this invention. It is a perspective view which shows typically the heat insulation board and mesh material of other embodiment of the heat insulation structure of this invention. It is the perspective view and partial side view which show the example which attached the multiple heat insulation board illustrated to FIG.2 (c) to the up-down direction. It is a perspective view which shows the attachment form of the mesh material of other embodiment of the heat insulation structure of this invention. It is a cross-sectional schematic diagram of an example of the conventional heat insulation structure.

  The configuration of the present invention will be described below with reference to embodiments.

  FIG. 1 is a diagram schematically showing a cross section of an externally bonded heat insulating structure, which is a preferred embodiment of the heat insulating structure of the present invention. In the figure, 1 is a frame such as a concrete wall, 2 and 4 are adhesive layers, 3 is a heat insulating plate, 5 and 7 are mesh materials, 6 is an exterior material, and 8 is a screw.

  The structural feature of the present invention resides in that the casing 1 and the adhesive layer 4 are connected using a mesh material 7 made of an inorganic material. That is, the mesh material 7 is disposed along the upper end surface or the lower end surface of the heat insulating plate 3, and one end thereof wraps around the side surface of the heat insulating plate 3 on the case 1 side and is attached to the case 1 with screws 8. The other end side of the mesh material 7 wraps around the side surface of the heat insulating plate 3 on the adhesive layer 5 side, and is embedded and fixed in the adhesive layer 5.

  In this example, since the adhesive layer 2 (second adhesive layer) is formed on the entire wall surface of the casing 1 and the heat insulating plate 3 is attached to the casing 1 via the adhesive layer 2, the mesh Since one end of the material 7 is attached to the housing 1 with screws 8 and embedded in the adhesive layer 2, the mesh material 7 is more firmly fixed to the housing 1, which is preferable. Moreover, in this invention, you may fix the heat insulation board 3 to the housing | casing 1 using the member which does not become a thermal bridge, for example, a synthetic resin anchor. If the heat insulating plate 3 can be fixed with a synthetic resin anchor or the like, the adhesive layer 2 may not be used.

  As illustrated in FIG. 1, the heat insulating structure of the present invention includes a mesh material 7 fixed to the housing 1 and the adhesive layer 4, and the mesh material 7 is attached to the housing 1. Two or more places are preferable in the vertical direction of the casing 1 (up and down direction on the paper surface). Thereby, even if the heat insulating plate 3 melts and becomes hollow in the event of a fire, the member on the adhesive layer 4 side of the heat insulating plate 3, that is, in this example, the adhesive layer 4, the mesh material 5 (second inorganic mesh) Material) and a wall surface member made of the exterior material 7 are supported by the mesh material 7 and prevented from falling.

  In the embodiment illustrated in FIG. 1, in a structure in which a plurality of heat insulating plates 3 are mounted side by side in a vertical direction, the mesh material 7 is provided on the lower end side of each heat insulating plate 3 so that the lower end is wrapped in a U-shaped cross section. Although attached, the present invention is not limited to this structure. For example, the mesh material 7 may be disposed so as to wind up the upper end surface side of the heat insulating plate 3, and the end of the mesh material 7 on the housing 1 side and the end of the adhesive layer 4 side are upside down. It may be. FIG. 2A is a perspective view showing a form in which the end of the mesh material 7 on the housing 1 side and the end of the adhesive layer 4 side are upside down. In the figure, reference numeral 7a denotes an attachment end of the mesh material 7 to the housing 1.

  Moreover, in this invention, the mesh material 7 should just be attached to the housing 1 at one end, the other end wraps around the adhesive layer 4, and at least one part is embed | buried in the adhesive layer 4. FIG. In the present invention, since one end of the mesh material 7 is attached to the housing 1 with screws 8, sufficient strength is ensured, but the mesh material 7 is embedded in the adhesive layer 4 on the other end side. Therefore, it is preferable that the region embedded in the adhesive layer 4 is wider because the strength becomes higher. Therefore, the other end side of the mesh material 7 wraps around the opposite end face (upper end face in the case of FIG. 1) of the heat insulating plate 3 over the entire vertical direction of the heat insulating plate 3, and further turns to the case 1 side. It may be attached. That is, the mesh material 7 is along the side surface and the upper and lower end surfaces of the heat insulating plate 3 on the adhesive layer 4 side, both ends of the mesh material 7 are turned to the housing 1 side, and the both ends are fixed to the housing 1. Moreover, in the form which concerns, the mesh material 7 may be extended over the several heat insulation board 3 in the orthogonal | vertical direction. The perspective view of this form is illustrated in FIG. In the example of FIG. 4, a long mesh material 7 is arranged along the side surfaces of the three heat insulating plates 3 in the vertical direction, the upper end surface of the upper heat insulating plate 3, and the lower end surface of the lower heat insulating plate 3. Both end portions 7a and 7a are arranged along the housing 1 and attached to the housing 1 respectively.

  Furthermore, in the present invention, the width of the mesh material 7 (the length in the direction perpendicular to the paper surface of FIG. 1) may extend over the entire width of the heat insulating plate 3 or may be a part thereof.

  In FIG. 2, the heat insulation board 3 and the mesh material 7 of embodiment different from FIG. 1 are shown typically.

  FIG. 2A shows a form in which the mesh material 7 extends over the entire width of the heat insulating plate 3 and the other end opposite to the one end 7 a attached to the housing 1 is embedded in the adhesive layer 4. FIG. 2B is an example in which a plurality of mesh members 7 having a width smaller than the width of the heat insulating plate 3 are used in the width direction of the heat insulating plate 3, and the other side opposite to the one end 7 a attached to the housing 1. The end is in a form that turns into an end face on the opposite side of the heat insulating plate 3 and becomes an end portion 7 a attached to the housing 1. Further, FIG. 2 (c) shows a form in which the mesh material 7 covers the entire side surface of the heat insulating plate 3 on the adhesive layer 4 side, but the other end opposite to the one end 7 a attached to the housing 1 is the adhesive layer 4. It corresponds to the end of the side surface of the side heat insulating plate 3.

  Since the mesh material 5 is a member used for the purpose of reinforcing the adhesive layer 4, the side surface of the heat insulating plate 3 on the side of the adhesive layer 4 is covered with the mesh material 7 as shown in FIG. In such a case, the mesh material 5 is also responsible for the action of the mesh material 5, so it is not necessary to use the mesh material 5. However, since the level | step difference produced between the adjacent heat insulation boards 3 may affect the adhesive bond layer 4, it is preferable to cover the boundary of the adjacent heat insulation board 3 with a mesh material with such a form. FIG. 3A is a perspective view showing the heat insulating plate 3 and the mesh material 7 in a state where the two heat insulating plates 3 are attached in the vertical direction using the mesh material 7 of FIG. 2C. ), The mesh material 9 covers the boundary between the heat insulating plates 3 and 3 adjacent to each other in the vertical direction. FIG. 3B is a partial side view of FIG. 3A viewed from the direction of arrow A. In addition, when using the mesh material 5, since the mesh material 5 covers the level | step difference produced between the adjacent heat insulation boards 3, the mesh material 9 as shown in FIG. 3 which covers a boundary is unnecessary.

  Next, the construction method of the heat insulation structure of this invention is demonstrated. In the present invention, the mesh material 7 may be attached at the construction site, or may be brought into the construction site in the state of being attached to the heat insulating plate 3 in advance, that is, in the form of FIGS. 2 (a) to 2 (c). A method of attaching the mesh material 7 to the heat insulating plate 3 in advance is not particularly limited, but at least a metal member that becomes a thermal bridge is not used. In addition, since the mesh material 7 is finally fixed in the heat insulating structure by the adhesive layer 4, the mesh material 7 is attached to the heat insulating plate 3 when the mesh material 7 is attached to the housing 1. Temporary fixing to the extent that it does not come off from the heat insulating plate 3 may be used.

  The construction method of the heat insulation structure of FIG. 1 will be described. First, an adhesive is applied to the housing 1 to form an adhesive layer 2, a mesh material 7 is placed on the upper end surface of the lower heat insulating plate 3, one end is embedded in the adhesive layer 2, and at the same time, the screws 1 are attached to the housing 1. After the attachment, the next heat insulating plate 3 is placed on the mesh material 7 and the side surface thereof is attached to the adhesive layer 2. Furthermore, after attaching the heat insulating plate 3 to the housing 1 through the adhesive layer 2 while attaching the mesh material 7 in sequence, the other end of the mesh material 7 protruding from between the heat insulating plates 3 adjacent to the upper and lower sides is insulated upward. Along the side of the plate 3. Next, the wall surface of the heat insulating plate 3 is covered with the mesh material 5 and temporarily fixed, and then an adhesive is applied to form the adhesive layer 4, and at the same time, the mesh material 5 is embedded in the adhesive layer 4. Finally, the exterior material 6 is pasted through the adhesive layer 4 or formed by coating.

  Further, when the heat insulating structure of FIG. 1 is turned upside down, that is, when the mesh material 7 is configured to wrap the upper end surface of the heat insulating plate 3 in a reverse U-shaped cross section, one end of the mesh material 7 is first put into a housing. After attaching to 1 with screws 8, the heat insulating plate 3 may be attached below the mesh material 7.

  2 (a) and 2 (b), when the mesh material 7 is previously attached to the heat insulating plate 3 and installed in the construction site, the mesh material 7 is attached to the upper and lower sides of the heat insulating plate 3 at the ends. Since 7a protrudes, the heat insulation board 3 with the mesh material 7 of FIG. 2 (a) or FIG.2 (b) is used for every other heat insulation board in the perpendicular direction of the housing 1. FIG. Specifically, after the adhesive layer 2 is formed on the casing 1, the heat insulating plate 3 with the mesh material 7 of FIG. 2A or 2B is attached to the casing 1 via the adhesive layer 2. Then, the attachment end 7 a of the mesh material 7 is fixed along the housing 1, and then the heat insulating plate 3 to which the mesh material 7 is not attached is attached to the housing 1 through the adhesive layer 2. Subsequent processes are the same as the construction method of the heat insulation structure of FIG.

  2C, when the attachment end 7a of the mesh material 7 protrudes only on one of the upper and lower sides of the heat insulating plate 3, the heat insulating plate is directed with the attachment end 7a facing upward. The process of attaching 3 to the housing 1 via the adhesive layer 2 and attaching the attachment end 7a to the housing 1 with screws 8 may be repeated in order from the bottom. Thereafter, the mesh material 9 is attached as necessary, and thereafter, the construction method of the heat insulating structure in FIG. 1 is the same.

  In the above embodiment, the outer heat insulating structure has been described as an example, but the heat insulating structure of the present invention is also applied to the inner heat insulating structure, and the material of each member is appropriately selected according to the form of the heat insulating structure. Is done. For example, when the heat insulating structure of the present invention is used for a lining heat insulating structure, an interior material is used instead of the exterior material 6 of FIG. Hereinafter, specific examples of each member will be described.

  The casing 1 in the heat insulating structure of the present invention is, for example, a concrete wall.

  The adhesive used for the adhesive layer 2 is preferably a non-flammable adhesive, and specifically, a resin mortar obtained by mixing a re-emulsifying powder resin such as vinyl acetate resin or acrylic resin and cement is preferably used. . Here, the resin component ratio to cement is preferably 20% by mass or less from the viewpoint of nonflammability. The specific composition of the resin mortar is 30% by mass of cement, 60% by mass of fine aggregate, 6% by mass of re-emulsified powder resin of ethylene / vinyl acetate copolymer, and 4% of other additives such as glass fiber. % Resin mortar.

  The heat insulating plate 3 is a synthetic resin foam molded body, and preferably has excellent water resistance and heat insulating properties. Specifically, for example, a foam having closed cells such as a polystyrene foam, a polyethylene foam, a polypropylene foam, a polyurethane foam, and a phenol foam is preferable. In particular, extruded polystyrene (trade name “Styrofoam” manufactured by Dow Chemical Co., Ltd.) is suitable in terms of its high heat insulation and low water absorption.

  The mesh materials 5, 7, and 9 are all inorganic mesh materials, and may be the same material or different materials. Specifically, a metal mesh material or a glass mesh material is preferably used. In addition, since the metal mesh material is composed of a thin metal material, even if it is used as the mesh material 7, it does not substantially become a thermal bridge. Therefore, it can be used in the present invention, but as the mesh materials 5, 7, 9 A glass mesh material is more preferably used.

  The adhesive used for the adhesive layer 4 is preferably a nonflammable adhesive, and the same material as the adhesive 2 is preferably used.

  As the exterior material 6 in the case of the heat insulation structure with an outer layer, for example, a mortar tile or the like may be mentioned, but a finish mortar may be applied and formed. Examples of the interior material in the case of the lining heat insulating structure include wallpaper and cloth.

  Although it does not specifically limit as the screw 8, In this invention, since the screw 8 which concerns is used in order to attach the mesh material 7 to the housing 1, the metal screw generally used in the construction site can be used. Moreover, even if it is not metal, as long as it can fix the mesh material 7 to the housing 1 with sufficient intensity | strength, it can be used.

  1: Housing, 2, 4: Adhesive layer, 3: Thermal insulation plate, 5, 7, 9: Mesh material, 7a: Mounting end, 6: Exterior material, 8, 10: Screw,

Claims (4)

The heat insulating structure includes at least a housing of the building, a heat insulating plate made of a synthetic resin foam molded body attached to the wall of the housing, and an exterior or interior material laminated on the heat insulating plate via an adhesive layer. And
It is arranged along the upper end surface or the lower end surface of the heat insulating plate, one end is fixed to the housing with screws, the other end side wraps around the side surface of the heat insulating plate on the adhesive layer side, and at least part of the other end side Comprising an inorganic mesh material embedded and fixed in the adhesive layer.   The heat insulating structure according to claim 1, wherein a second inorganic mesh material is embedded over the entire area of the adhesive layer.   The heat insulating structure according to claim 1, wherein the other end side of the inorganic mesh material covers all the side surfaces of the heat insulating plate on the adhesive layer side.   The heat insulation structure of any one of Claims 1-3 in which a 2nd adhesive bond layer interposes between the said heat insulation board and a housing.

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