Spacer for mounting insulation material, and insulation structure

Abstract

To provide a spacer for mounting insulation materials with excellent workability that can secure ventilation space between insulation materials with flexibility and an exterior wall material while fixing the insulation material to a framework, and an insulation structure.SOLUTION: A spacer 1 for mounting insulation material is constructed by joining a wall surface fixing member 2 and an insulation material hanging member 3. The wall surface fixing member 2 comprises a space-retaining portion 22 that is fixed to a wall surface (exterior wall material 8), and an expansion guidance portion 23 and a joint shaft portion 24 that extend in a direction perpendicular to the wall surface. A peripheral surface of the expansion guidance portion 23 expands toward the space-retaining portion 22 side. The insulation material hanging member 3 comprises a joint cylinder portion 31 and a hanging portion 32, with a slit 33 formed in the joint cylinder portion 31. When the joint cylinder portion 31 is inserted into the joint shaft portion 24 and pressed against the wall surface side, a peripheral surface of the joint cylinder portion 31 expands along the expansion guidance portion 23 and is pressed against a surface of an insulation material 7 hung on the hanging portion 32, which has a hook-shaped tip portion 36. Thus, a ventilation space 9 is formed between the insulation material 7 and the wall surface.SELECTED DRAWING: Figure 4

Description

[Technical Field]

[0001] The invention disclosed in this application relates to a spacer for mounting an insulating material used in a thermal insulation construction method for the outer periphery of a building having a framework structure, and to a thermal insulation structure constructed using the spacer for mounting an insulating material. [Background technology]

[0002] A well-known thermal insulation method for the outer periphery of a steel-framed building involves erecting an interior wall base panel, which integrates a frame and insulating material, within the structural plane of the framework surrounded by the columns and beams of the outer periphery, or slightly inside the structural plane, and then applying an interior wall finishing material such as gypsum board or wallpaper to the interior wall base panel. Additionally, insulating material is also laid or erected on the exterior side of the interior wall base panel, thereby forming a double layer of insulating material inside and outside, thereby improving the building's insulating performance. The frame of the interior wall base panel is made of wood or lightweight steel, and the insulating material attached to the interior wall base panel is often a board-shaped insulating material made of a foamed resin molded product such as polystyrene foam, polyethylene foam, rigid urethane foam, or phenolic foam.

[0003] Insulation materials placed on the exterior side of interior wall base panels include board-shaped insulation materials similar to those described above, as well as fiber-based insulation materials formed into a flexible mat by filling inorganic fibers such as glass wool or rock wool into a bag made of resin film. When insulation materials placed on the exterior side are placed in contact with the back surface of the exterior wall material, condensation occurs between the exterior wall material and the insulation material, so a ventilation space is provided between the two. The present applicant has also proposed and put into practical use insulation construction methods (thermal insulation structures, wall structures, etc.) for peripheral areas having such double inner and outer insulation layers and a ventilation space behind the exterior wall material, for example, in Patent Documents 1 to 9. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Publication No. 02-108747 [Patent Document 2] Japanese Patent Application Publication No. 02-144437 [Patent Document 3] Japanese Patent Application Publication No. 10-237976 [Patent Document 4] Japanese Patent Application Publication No. 10-266417 [Patent Document 5] Japanese Patent Application Laid-Open No. 2010-037873 [Patent Document 6] Japanese Patent Application Laid-Open No. 2014-173257 [Patent Document 7] Japanese Patent Application Publication No. 2020-094449 [Patent Document 8] Patent Publication No. 2021-116559 [Patent Document 9] Patent Publication No. 2021-121709 Summary of the Invention [Problem to be solved by the invention]

[0005] The invention disclosed in this application was conceived to further improve the workability of the conventional thermal insulation construction methods described above, and aims to provide an insulation mounting spacer that is easy to work with, and that, when using fiber-based insulation as the insulation behind the exterior wall material, can secure an appropriate ventilation space between the insulation material and the exterior wall material while fixing the insulation material to the framework of the building frame, and an insulation structure that uses this insulation mounting spacer. [Means for solving the problem]

[0006] In order to achieve the above-mentioned object, the invention disclosed in this application is an insulating material mounting spacer for securing a space of a predetermined width between a wall surface and an insulating material when flexible insulating material is arranged along the wall surface, the spacer including a wall fixing member fixed to the wall surface, and an insulating material hanging member joined to the wall fixing member, the wall fixing member having a predetermined axial length and including a space retaining portion fixed to the wall surface, and an expansion guide portion and a connecting shaft portion extending in a direction perpendicular to the space retaining portion and continuing from the space retaining portion, the expansion guide portion being formed so that its circumferential surface expands in diameter without steps from a connection point with the connecting shaft portion toward a connection point with the space retaining portion, and the insulating material hanging member has an axial length greater than that of the connecting shaft portion and is joined to the connecting shaft portion and a hanging portion that is continuous with the joining tubular portion and extends away from the wall surface. The joining tubular portion has a plurality of slits that extend in its axial direction and open toward the wall fixing member. When the joining tubular portion of the insulation hanging member is inserted into the joining tubular portion of the wall fixing member and the insulation is hung on the hanging portion of the insulation hanging member, and the insulation hanging member is pressed toward the wall fixing member, the peripheral surface of the joining tubular portion divided by the slits expands and curves along the expansion guide portion of the wall fixing member and is pressed against the surface of the insulation, thereby forming a space between the insulation and the wall surface with a width corresponding to the axial length of the space retaining portion.

[0007] In this invention, it is preferable that the peripheral surface of the expansion guide portion is formed in the shape of a rotating body with a generating line that is a curve that is convex toward the axis center, because this allows the peripheral surface of the joining tubular portion divided by the slits to expand more smoothly.

[0008] In addition, in this invention, the joining means for joining the heat insulating material hanging member and the wall fixing member when the portion divided by the slit is expanded may be formed using an appropriate concave-convex engagement form between a portion near the joining shaft and the inner peripheral surface of the joining tubular portion. In this way, after the peripheral surface of the joining tubular portion divided by the slit is fully expanded, the wall fixing member and the heat insulating material hanging member can be firmly joined to an extent that they do not easily separate.

[0009] In addition, in this invention, if a bent pointed tip is formed at the rear end of the hanging portion, safety is improved when hanging the insulation material on the hanging portion and it is also convenient when striking the rear end of the hanging portion with a hammer or the like.

[0010] Furthermore, in the present invention, the space retaining portion of the wall surface fixing member may be provided with a base portion having a cross-sectional area larger than that of the space retaining portion.

[0011] The invention of the thermal insulation structure disclosed in the present application is characterized in that the wall fixing member of the thermal insulation mounting spacer configured as described above is fixed to the back surface of the exterior wall material with the joint shaft portion facing the indoor side, the joint tubular portion of the thermal insulation hanging member is inserted into the joint shaft portion, a flexible thermal insulation material is hung on the hanging portion of the thermal insulation hanging member, the thermal insulation hanging member with the hung thermal insulation material is pressed toward the wall fixing member, and the peripheral surface of the joint tubular portion divided by the slit expands along the expansion guide portion of the wall fixing member and is pressed against the surface of the thermal insulation material, thereby forming a ventilation space with a width corresponding to the axial length of the space retaining portion between the thermal insulation material and the back surface of the exterior wall material. [Effects of the Invention]

[0012] When the insulation mounting spacer configured as described above is attached to a wall surface, a flexible insulation material is hung on the insulation hanging member, and the insulation hanging member is pressed against the wall surface, the peripheral surface of the joining tubular portion divided by the slit expands along the expansion guide portion of the wall fixing member and is pressed against the surface of the insulation material, thereby easily and reliably forming a space of a specified width between the insulation material and the wall surface. [Brief explanation of the drawings]

[0013] [Figure 1] 1 is an exploded perspective view showing the overall configuration of an insulating material mounting spacer according to one embodiment of the invention disclosed in the present application; [Figure 2] 4 is a partial cross-sectional view showing the joining structure between the wall fixing member and the heat insulating material hanging member of the heat insulating material mounting spacer. FIG. [Figure 3] 1 is an explanatory diagram showing an overall image of a heat insulating structure using the heat insulating material mounting spacer. FIG. [Figure 4] 3A to 3C are explanatory diagrams showing a method for installing a heat insulating material using the heat insulating material mounting spacer in a step-by-step manner. DETAILED DESCRIPTION OF THE INVENTION

[0014] Hereinafter, embodiments of the present invention will be described with reference to the drawings. The thermal insulation structure disclosed herein corresponds to a so-called external thermal insulation ventilation structure, in which a thermal insulation material is placed on the exterior side of the building frame at the periphery of a steel frame building, and a ventilation space is formed between the thermal insulation material and the exterior wall material. The thermal insulation material is typically a fiber-based thermal insulation material formed by filling inorganic fibers such as glass wool or rock wool into a resin film bag and forming it into a flexible mat shape. However, this invention is applicable not only to thermal insulation materials primarily composed of inorganic fibers, but also to thermal insulation materials formed into a mat or board shape that is flexible (expandable) in the thickness direction (e.g., soft foam resin or natural material (e.g., cellulose fiber, wool breath, recycled felt, etc.)).

[0015] Such insulation is fixed to the building frame by fastening its upper edge to beams or the like on the upper floor and hanging it down, or by gluing its side edges to columns or the like. In the invention disclosed herein, there are no particular limitations on the means for fixing the peripheral edge of the insulation to the building frame. The insulation mounting spacer disclosed herein is attached to a portion of the insulation arranged in this manner other than the peripheral edge, and serves to ensure a ventilation space of a predetermined width between the insulation and the exterior wall material.

[0016] In the following, when explaining the relative positions of parts and components and the direction of operation, the posture of the worker when fixing the insulation material from the indoor side of the structure toward the back side of the exterior wall material will be used as the reference, with the outdoor side being defined as the front and the indoor side as the rear.

[0017] 1 to 4 show an insulating material mounting spacer according to one embodiment of the present invention, and a method of installing insulating material using the insulating material mounting spacer. The insulating material mounting spacer 1 comprises a wall surface fixing member 2 fixed to the back surface of an exterior wall material 8, and an insulating material hanging member 3 joined to the wall surface fixing member 2.

[0018] The wall fixing member 2 is made of a metal material or a synthetic resin material having an appropriate rigidity. The wall fixing member 2 includes a base portion 21 fixed to the rear surface of the exterior wall material 8, a space retaining portion 22 protruding rearward (toward the interior side) from the base portion 21, and an expansion guide portion 23 and a joint shaft portion 24 that are continuous with the space retaining portion 22 and extend perpendicular to the surface of the exterior wall material 8.

[0019] The base 21 is a thin plate-like portion having a rectangular, circular or other appropriate front shape, and one side thereof is fixed to the back surface of the exterior building material 8 using, for example, an adhesive or double-sided tape. One side of the base 21 may have adhesive tape attached in advance.

[0020] The space retaining portion 22 is a portion that ensures the width of the ventilation space 9, which will be described later, by its axial length (the length of protrusion from the back surface of the exterior building material 8). While the space retaining portion 22 in the illustrated embodiment is generally cylindrical, its shape may be, for example, a polygonal pillar, or a series of thin portions arranged in parallel. In other words, the shape of the space retaining portion 22 is basically arbitrary as long as it has a certain protruding length and exhibits strength sufficient to prevent easy buckling or crushing due to compressive forces acting in the direction perpendicular to the surface of the exterior building material 8. Furthermore, if the end area on the exterior building material 8 side is sufficiently large, the base portion 21 can be omitted and the space retaining portion 22 can be directly fixed to the exterior building material 8.

[0021] The joining shaft 24 is a generally cylindrical section with a relatively smaller cross section than the space retaining section 22. By extending the joining shaft 24 from the space retaining section 22 toward the indoor side and inserting the heat insulating material hanging member 3 into the joining shaft 24, the heat insulating material hanging member 3 can be held by the wall fixing member 2. The axial length of the joining shaft 24 is set depending on factors such as the axial length of the joining tubular section 31 of the heat insulating material hanging member 3, which will be described later. Furthermore, the cross-sectional shape of the joining shaft 24 is not limited to the generally cylindrical shape shown in the example, as long as it is a shape that can fit together with the joining tubular section 31 of the heat insulating material hanging member 3, which will be described later.

[0022] The expansion guide portion 23 provided between the space retaining portion 22 and the connecting shaft portion 24 has a peripheral surface that expands in diameter without any steps from the connection point with the connecting shaft portion 24 to the connection point with the space retaining portion 22. The peripheral surface can be, for example, a smooth conical shape, but in the illustrated embodiment, it is formed into a conical shape that is pointed on the indoor side, or more specifically, into a revolution shape (so-called horn or trumpet shape) with a generatrix that is an arc-shaped curve that is convex toward the axis. However, the front shape of the expansion guide portion 23 (cross-sectional shape in the direction perpendicular to the axis) is not necessarily limited to a circle and may be, for example, an ellipse or polygon.

[0023] At the connection point between the joint shaft portion 24 and the expansion guide portion 23, an annular groove 25 is formed around the outer circumferential surface along a plane perpendicular to the axis.

[0024] The heat insulating material hanging member 3 is made of a metal material or a synthetic resin material that has appropriate rigidity and appropriate plasticity or elastoplasticity. The material may be the same as or different from that of the wall fixing member 2. The heat insulating material hanging member 3 comprises a tubular joint portion 31 that is inserted into the joint shaft portion 24 of the wall fixing member 2, and a hanging portion 32 that is continuous with the tubular joint portion 31 and extends rearward (away from the exterior building material 8).

[0025] In the illustrated embodiment, the joint tube portion 31 has a generally cylindrical shape that can be inserted onto the connecting shaft portion 24 of the wall fixing member 2, and a hollow portion that is sufficiently longer than the joint shaft portion 24 is formed inside it. The inner diameter of the hollow portion is preferably such that it can be lightly fitted onto the joint shaft portion 24. The joint tube portion 31 is formed with a plurality of slits 33 (four in the illustrated embodiment) that extend axially from the middle portion near the hanging portion 32 and open towards the wall fixing member 2. Furthermore, an annular protrusion 34 is formed on the inner peripheral surface near the rear end (closed end on the indoor side) of the slits 33, going around the inner peripheral surface along a plane perpendicular to the axis.

[0026] The hanging portion 32 is joined to the connecting tubular portion 31 in a generally coaxial manner at the rear (indoor side) of the portion (tubular portion 35) where the slit 33 is not formed. A pointed tip 36 bent like a hook is formed at the rear end of the hanging portion 32.

[0027] Here, the length of each part will be specifically described with reference to FIG. 2 . Letting A be the axial length of the hollow portion of the joint tubular part 31, B be the length of the slit 33, and C be the axial length of the tubular part 35 where the slit 33 is not formed, then [A = B + C]. The axial length C of the tubular part 35 is set to be at least equal to or greater than the axial length D of the joint shaft part 24 of the wall fixing member 2, i.e., [C ≥ D]. There are no particular restrictions on the length B of the slit 33, as long as it exceeds the axial length D of the joint shaft part 24. However, as a guideline, it is set to approximately 2 to 3 times the axial length D of the joint shaft part 24 or approximately 3 to 4 times the outer diameter E of the joint tubular part 31. The combined length F of the tubular part 35 and the hanging part 32 is set to be less than the thickness of the insulating material 7, more specifically, approximately 1 / 2 to 2 / 3 of the thickness of the insulating material 7.

[0028] A method for placing the heat insulating material 7 on the back surface of the exterior wall material 8 using the heat insulating material mounting spacer 1 configured in this manner will be described.

[0029] First, as shown in Figure 3(a), a plurality of wall fixing members 2 are attached to the rear surface of the exterior building material 8 at appropriate intervals both vertically and horizontally. An adhesive or adhesive tape is used for this attachment. This work may be performed with the wall fixing members 2 and the heat insulating material hanging members 3 already joined together, or after the plurality of wall fixing members 2 are attached to the exterior building material 8, the heat insulating material hanging members 3 may be joined to those wall fixing members 2.

[0030] Then, as shown in Figures 3(b) and 4(a), the insulating material 7 is pressed against the multiple insulating material mounting spacers 1 fixed to the exterior wall material 8, and the pointed tip 36 of the hanging portion 32 is forced to bite into the insulating material 7, thereby fastening the insulating material 7. Because the pointed tip 36 of the hanging portion 32 is bent like a hook, even if a worker presses the insulating material 7 against the insulating material mounting spacer 1 from the indoor side, the pointed tip 36 is unlikely to pierce the worker's hand. Furthermore, by pointing the pointed tip 36 upward, the insulating material 7 is held in a more stable state.

[0031] Once the hanging portion 32 has been inserted to an appropriate depth into the thermal insulation 7, the rear end of the hanging portion 32 is lightly struck with a hammer or the like from the indoor side, as shown in FIG. 4(b). The bent tip 36 of the hanging portion 32 is convenient for facilitating this striking. When the thermal insulation hanging member 3 is pushed toward the wall fixing member 2 by the strike, the circumferential surface of the connecting tubular portion 31, divided by the slit 33, gradually curves and protrudes radially outward along the expansion guide portion 23 of the wall fixing member 2, as shown in FIG. 4(c), unfolding into an umbrella shape (or petal shape), and the unfolded portion presses against the outdoor surface of the thermal insulation 7. When the thermal insulation hanging member 3 is pushed into a position where the connecting shaft portion 24 of the wall fixing member 2 fits into the tubular portion 35 of the connecting tubular portion 31, the circumferential surface of the connecting tubular portion 31, divided by the slit 33, fully unfolds and presses against the surface of the thermal insulation 7. In this way, a ventilation space 9 having a width equivalent to the axial length of the space retaining portion 22 (including the thickness of the base portion 21, if any) is formed between the exterior wall material 8 and the insulation material 7.

[0032] When the circumferential surface of the connecting tubular portion 31 divided by the slits 33 expands to an extent that it is approximately perpendicular to the axis of the connecting tubular portion 31, the annular protrusion 34 formed on the inner circumferential surface of the connecting tubular portion 31 climbs over the connecting shaft portion 24 of the wall fixing member 2 and engages with the annular groove 25, thereby joining the heat insulating material hanging member 3 and the wall fixing member 2 to an extent that they will not easily separate. However, the means for joining the heat insulating material hanging member 3 and the wall fixing member 2 is not limited to the engagement form between the annular groove 25 and the annular protrusion 34 as shown in the example, but can be configured using any appropriate concave-convex engagement form, such as an engagement form between a protrusion (convex portion) and a groove (concave portion) that are not continuous in the circumferential direction, a form in which multiple sets of protrusions and grooves that are spaced apart in the axial direction engage with each other, or a form in which the positional relationship between the protrusions and grooves is reversed inside and outside. Furthermore, the position at which these protrusions and recesses engage is not limited to the connection point between the expansion guide portion 23 and the connecting shaft portion 24, but can be selected appropriately within the range of, for example, a nearby portion of the connecting shaft portion 24 including the indoor end of the connecting shaft portion 24 (this ``nearby portion'' also includes the position of the annular groove 25 mentioned above) and the corresponding inner surface of the connecting tube portion 31.

[0033] As explained above, by employing the insulation mounting spacer 1 according to the invention disclosed herein, the work of placing the insulation 7 on the outdoor side of the building frame and forming the ventilation space 9 between the insulation 7 and the exterior wall material 8 can be performed easily and quickly from the indoor side. The insulation mounting spacer 1 can be attached to the exterior wall material 8 using adhesive or adhesive tape, and the insulation 7 can be attached to the insulation mounting spacer 1 simply by hitting it with a hammer, making the work extremely easy and safe. Thus, an externally insulated and ventilated structure with the ventilation space 9 on the back side of the exterior wall material 8 can be suitably realized, preventing condensation inside the wall and optimizing insulation efficiency.

[0034] The technical scope of the invention disclosed herein should not be construed as being limited by the exemplified embodiments, but should be construed conceptually based on the claims. The names of elements used in the claims and the specification are for convenience in making the invention easier to understand, and the names do not unnecessarily limit the concepts or properties of the elements. When implementing the invention disclosed herein, the detailed shape, dimensions, structure, materials, quantity, connection form with other elements, relative positional relationship, etc. of elements not specifically specified in the claims may be appropriately modified within the scope of utilizing an operating principle substantially equivalent to the exemplified embodiments or within the scope of obtaining effects substantially equivalent to or greater than those of the exemplified embodiments.

[0035] Furthermore, the embodiments and other matters disclosed in this specification can also be understood as the technical ideas described in the following supplementary notes. (Appendix 1) A spacer for mounting a heat insulating material, which is used to secure a space of a predetermined width between a wall surface and the heat insulating material when the heat insulating material is arranged along a suitable wall surface, The wall fixing member is fixed to the wall surface, and the heat insulating material hanging member is joined to the wall fixing member. The wall surface fixing member includes a space retaining portion having a predetermined axial length and fixed to the wall surface, and an expansion guide portion and a joint axial portion that are continuous with the space retaining portion and extend in a direction perpendicular to the wall surface, the expansion guide portion is formed so that its peripheral surface expands in diameter without any steps from a connection point with the joining shaft portion toward a connection point with the space retaining portion, The heat insulating material hanging member includes a joint tubular portion having an axial length greater than that of the joint shank portion and inserted into the joint shank portion, and a hanging portion that is continuous with the joint tubular portion and extends in a direction away from the wall surface, The joint tube portion has a plurality of slits formed therein that extend in the axial direction and open toward the wall surface fixing member, When the connecting tubular portion of the heat insulating material hanging member is inserted into the connecting tubular portion of the wall fixing member and the heat insulating material is hung on the hanging portion of the heat insulating material hanging member, and the heat insulating material hanging member is pressed toward the wall fixing member, the peripheral surface of the connecting tubular portion divided by the slit unfolds while curving along the expansion guide portion of the wall fixing member and is pressed against the surface of the heat insulating material, thereby forming a space between the heat insulating material and the wall surface with a width corresponding to the axial length of the space retaining portion. A spacer for mounting a heat insulating material configured as follows. (Appendix 2) In the spacer for mounting heat insulating material described in Appendix 1, The peripheral surface of the expansion guide portion is formed in the shape of a body of revolution with a curved line that is convex toward the axis as its generating line. A spacer for mounting a heat insulating material. (Appendix 3) In the spacer for mounting heat insulating material described in Appendix 1 or 2, When the portion divided by the slit is expanded, a joining means for joining the heat insulating material hanging member and the wall surface fixing member is formed between a portion near the joining shaft portion and the inner peripheral surface of the joining tubular portion using an appropriate concave-convex engagement form. A spacer for mounting a heat insulating material. (Appendix 4) In the spacer for mounting a heat insulating material according to any one of appendices 1 to 3, A bent pointed portion is formed at the rear end of the hook portion. A spacer for mounting a heat insulating material. (Appendix 5) In the spacer for mounting a heat insulating material according to any one of appendices 1 to 4, The space retaining portion of the wall surface fixing member is provided with a base portion having a cross-sectional area larger than that of the space retaining portion. A spacer for mounting a heat insulating material. (Appendix 6) The wall surface fixing member of the heat insulating material mounting spacer according to any one of claims 1 to 5 is fixed to the back surface of an exterior wall material with the joint shaft portion facing the indoor side, The joint tubular portion of the heat insulating material hanging member is inserted into the joint shaft portion, A flexible insulating material is hung on the hanging portion of the insulating material hanging member, The heat insulating material hanging member on which the heat insulating material is hung is pressed toward the wall fixing member, and the peripheral surface of the joint tubular portion divided by the slit unfolds along the expansion guide portion of the wall fixing member and is pressed against the surface of the heat insulating material, thereby forming a ventilation space with a width corresponding to the axial length of the space retaining portion between the heat insulating material and the rear surface of the exterior wall material. A heat-insulating structure characterized by: [Industrial Applicability]

[0036] The invention disclosed in this application can be widely used not only in the thermal insulation structures around the periphery of buildings as exemplified above, but also in construction areas where flexible mat-like covering or shielding materials are placed with a predetermined space between them and an appropriate wall surface. [Explanation of symbols]

[0037] 1 Insulation mounting spacer 2 Wall fixing member 21 Base 22 Space holding part 23 Expansion guide 24 Joint shaft part 25 Annular groove 3. Heat insulation material attachment member 31 Joint cylinder part 32 Hanging part 33 Slit 34 Annular protrusion 35 Cylindrical part 36 Pointed tip 7. Insulation 8 Exterior wall materials 9 Ventilation space

Claims

1. A spacer for mounting a heat insulating material, which is used to secure a space of a predetermined width between a wall surface and the heat insulating material when the heat insulating material is arranged along a suitable wall surface, The wall fixing member is fixed to the wall surface, and the heat insulating material hanging member is joined to the wall fixing member. The wall surface fixing member includes a space retaining portion having a predetermined axial length and fixed to the wall surface, and an expansion guide portion and a joint axial portion that are continuous with the space retaining portion and extend in a direction perpendicular to the wall surface, the expansion guide portion is formed so that its peripheral surface expands in diameter without any steps from a connection point with the joining shaft portion toward a connection point with the space retaining portion, The heat insulating material hanging member includes a joint tubular portion having an axial length greater than that of the joint shank portion and inserted into the joint shank portion, and a hanging portion that is continuous with the joint tubular portion and extends in a direction away from the wall surface, The joint tube portion has a plurality of slits formed therein that extend in the axial direction and open toward the wall surface fixing member, When the connecting tubular portion of the heat insulating material hanging member is inserted into the connecting tubular portion of the wall fixing member and the heat insulating material is hung on the hanging portion of the heat insulating material hanging member, and the heat insulating material hanging member is pressed toward the wall fixing member, the peripheral surface of the connecting tubular portion divided by the slit unfolds while curving along the expansion guide portion of the wall fixing member and is pressed against the surface of the heat insulating material, thereby forming a space between the heat insulating material and the wall surface with a width corresponding to the axial length of the space retaining portion. A spacer for mounting a heat insulating material configured as follows.

2. 2. The spacer for attaching a heat insulating material according to claim 1, The peripheral surface of the expansion guide portion is formed in the shape of a body of revolution with a curved line that is convex toward the axis as its generating line. A spacer for mounting a heat insulating material.

3. The spacer for attaching a heat insulating material according to claim 1 or 2, When the portion divided by the slit is expanded, a joining means for joining the heat insulating material hanging member and the wall surface fixing member is formed between a portion near the joining shaft portion and the inner peripheral surface of the joining tubular portion using an appropriate concave-convex engagement form. A spacer for mounting a heat insulating material.

4. The spacer for attaching a heat insulating material according to claim 1 or 2, A bent pointed portion is formed at the rear end of the hook portion. A spacer for mounting a heat insulating material.

5. The spacer for attaching a heat insulating material according to claim 1 or 2, The space retaining portion of the wall surface fixing member is provided with a base portion having a cross-sectional area larger than that of the space retaining portion. A spacer for mounting a heat insulating material.

6. The wall surface fixing member of the heat insulating material mounting spacer according to claim 3 is fixed to the back surface of the exterior wall material with the joint shaft portion facing the indoor side, The joint tubular portion of the heat insulating material hanging member is inserted into the joint shaft portion, A flexible insulating material is hung on the hanging portion of the insulating material hanging member, The heat insulating material hanging member on which the heat insulating material is hung is pressed toward the wall fixing member, and the peripheral surface of the joint tubular portion divided by the slit unfolds along the expansion guide portion of the wall fixing member and is pressed against the surface of the heat insulating material, thereby forming a ventilation space with a width corresponding to the axial length of the space retaining portion between the heat insulating material and the rear surface of the exterior wall material. A heat-insulating structure characterized by:

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