Spacer for attaching heat insulating material and heat insulation structure

Abstract

Provided are a heat insulation material mounting spacer and a heat insulation structure with excellent workability, which can secure a ventilation space between an outer wall material while fixing a heat insulation material having flexibility to a housing. 【Solution means】The heat insulation material mounting spacer 1 is configured by joining a wall surface fixing member 2 and a heat insulation material hanging member 3. The wall surface fixing member 2 includes a space holding portion 22 fixed to a wall surface (outer wall material 8), a spreading guide portion 23 extending in a direction perpendicular to the plane of the wall surface, and a joining shaft portion 24. The peripheral surface of the spreading guide portion 23 has an increasing diameter toward the space holding portion 22 side. The heat insulation material hanging member 3 includes a joining cylinder portion 31 and a hanging portion 32. A slit 33 is formed in the joining cylinder portion 31. When the joining cylinder portion 31 is inserted into the joining shaft portion 24 and pressed toward the wall surface side, the peripheral surface of the joining cylinder portion 31 spreads along the spreading guide portion 23 and presses against the surface of the heat insulation material 7 hung on the hanging portion 32 having a hook-shaped pointed tip portion 36. Thus, a ventilation space 9 is formed between the heat insulation material 7 and the wall surface.

Description

Technical Field

[0001] The invention disclosed in the present application relates to a spacer for attaching a heat insulating material used in a heat insulating method for an outer peripheral portion of a building having a frame structure, and a heat insulating structure constructed using the spacer for attaching a heat insulating material.

Background Art

[0002] As a heat insulating method adopted for the outer peripheral portion of a building having a steel frame structure, an inner wall base panel in which a frame body and a heat insulating material are integrated is built in the plane of the frame structure of the building body surrounded by the column members and beam members of the outer peripheral portion or slightly on the indoor side of the plane, and an inner wall finishing material such as a plaster board or wallpaper is constructed on the inner wall base panel. At the same time, a heat insulating material is also laminated or built on the outdoor side of the inner wall base panel to form a double-layer heat insulating layer inside and outside, thereby improving the heat insulating performance of the building. A heat insulating method is known. The frame body of the inner wall base panel is formed using wood or lightweight steel frame materials, and the heat insulating material assembled to the inner wall base panel is often a board-shaped heat insulating material made of a foamed resin molded body such as polystyrene foam, polyethylene foam, rigid urethane foam, or phenolic foam.

[0003] In addition to the board-shaped heat insulating material similar to the above, a fiber-based heat insulating material formed into a flexible mat shape by filling inorganic fibers such as glass wool or rock wool into a bag made of a resin film is also frequently used for the heat insulating material arranged on the outdoor side of the inner wall base panel. When the heat insulating material arranged on the outdoor side is arranged in contact with the back surface of the outer wall material, condensation occurs between the outer wall material and the heat insulating material, so a ventilation space is provided between the two. The applicant of the present application has also proposed and put into practical use a heat insulating method (heat insulating structure, wall structure, etc.) for the outer peripheral portion having such a double-layer heat insulating layer inside and outside and a ventilation space on the back of the outer wall material in, for example, Patent Documents 1 to 9.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Patent Document 2

Patent Document 3

Patent Document 4

Patent Document 5

Patent Document 6

Patent Document 7

Patent Document 8

Patent Document 9

Summary of the Invention

Problems to be Solved by the Invention

[0005] The invention disclosed in the present application was conceived to further improve the workability of the conventional heat insulation method. When using a fibrous heat insulation material as the heat insulation material behind the outer wall material, while fixing the heat insulation material to the building frame, it is possible to secure a ventilation space with an appropriate interval between the heat insulation material and the outer wall material. An object of the present invention is to provide a heat insulation material mounting spacer with excellent workability and a heat insulation structure using the heat insulation material mounting spacer.

Means for Solving the Problems

[0006] In order to achieve the above object, the invention disclosed in the present application is a heat insulation material mounting spacer for securing a space with a predetermined width between a wall surface and a heat insulation material when the flexible heat insulation material is arranged along an appropriate wall surface. The heat insulation material mounting spacer includes a wall surface fixing member fixed to the wall surface and a heat insulation material hanging member joined to the wall surface fixing member. The wall surface fixing member includes a space holding portion having a predetermined axial length and fixed to the wall surface, and an expanding guide portion and a joining shaft portion that continuously extend in a direction perpendicular to the surface of the wall surface from the space holding portion. The expanding guide portion is formed such that its circumferential surface expands in diameter without a step from the connection portion with the joining shaft portion to the connection portion with the space holding portion. The heat insulation material hanging member includes a joining cylinder portion having an axial length larger than the axial length of the joining shaft portion and inserted into the joining shaft portion, and a hanging portion that continuously extends from the joining cylinder portion in a direction away from the wall surface. A plurality of slits extending in the axial direction and opening to the wall surface fixing member side are formed in the joining cylinder portion. When the joining cylinder portion of the heat insulation material hanging member is inserted into the joining cylinder portion of the wall surface fixing member and the heat insulation material is hung on the hanging portion of the heat insulation material hanging member, and the heat insulation material hanging member is pressed toward the wall surface fixing member side, the circumferential surface of the joining cylinder portion divided by the slits expands while curving along the expanding guide portion of the wall surface fixing member and is pressed against the surface of the heat insulation material, thereby forming a space with a width corresponding to the axial length of the space holding portion between the heat insulation material and the wall surface.

[0007] In this invention, it is preferable that the circumferential surface of the expanding guide portion is formed in a shape of a rotating body having a curve convex toward the axial center side as a generatrix, so that the circumferential surface of the joining cylinder portion divided by the slit can be expanded more smoothly.

[0008] In the present invention, a joining means for joining the heat insulating material hanging member and the wall surface fixing member when the portion divided by the slit is unfolded may be formed by using an appropriate concavo-convex engagement form between a vicinity portion of the joining shaft portion and an inner peripheral surface of the joining cylinder portion. According to this, after the peripheral surface of the joining cylinder portion divided by the slit is sufficiently unfolded, the wall surface fixing member and the heat insulating material hanging member can be firmly joined so as not to be easily separated.

[0009] In the present invention, when a pointed tip portion refracted at the rear end of the hanging portion is formed, the safety when hanging a heat insulating material on the hanging portion is improved, 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, a pedestal portion having a larger cross-sectional area than the space holding portion may be provided in the space holding portion of the wall surface fixing member.

[0011] The invention of the heat insulation structure disclosed in the present application is characterized in that the wall surface fixing member of the heat insulating material spacer configured as described above has the joining shaft portion fixed to the back surface of the outer wall material facing the indoor side, the joining cylinder portion of the heat insulating material hanging member is inserted into the joining shaft portion, a heat insulating material having flexibility is hung on the hanging portion of the heat insulating material hanging member, the heat insulating material hanging member with the heat insulating material hung thereon is pressed toward the wall surface fixing member side, and the peripheral surface of the joining cylinder portion divided by the slit is unfolded along the expansion guiding portion of the wall surface fixing member and pressed against the surface of the heat insulating material, thereby forming a ventilation space having a width corresponding to the axial length of the space holding portion between the heat insulating material and the back surface of the outer wall material.

Advantages of the Invention

[0012] Attach the spacer for attaching the heat insulating material configured as described above to the wall surface, hang a heat insulating material having flexibility on the heat insulating material hanging member, and press the heat insulating material hanging member toward the wall surface side. Then, the peripheral surface of the joint cylinder portion divided by the slit expands along the expansion guide portion of the wall surface fixing member and is pressed against the surface of the heat insulating material. Therefore, a space with a predetermined width can be easily and surely formed between the heat insulating material and the wall surface.

Brief Description of the Drawings

[0013]

Figure 1

Figure 2

Figure 3

Figure 4

Embodiments for Carrying Out the Invention

[0014] Hereinafter, embodiments of the invention disclosed in the present application will be described with reference to the drawings. The heat insulation structure disclosed in the present application corresponds to a so-called external heat insulation ventilation structure in which a heat insulating material is arranged on the outdoor side of the building frame in the outer peripheral portion of a building having a steel frame structure, and a ventilation space is formed between the heat insulating material and the outer wall material. As the heat insulating material, a fiber-based heat insulating material mainly formed by filling inorganic fibers such as glass wool and rock wool into a bag made of a resin film to form a flexible mat shape is used. However, the present invention is applicable not only to heat insulating materials mainly composed of inorganic fibers, but also to heat insulating materials formed by molding, for example, soft foamed resins and natural materials (cellulose fibers, wool felt, recycled felt, etc.) into a mat shape or a board shape having flexibility (expandability) in the thickness direction.

[0015] Such heat insulation materials are fixed to the building structure by fixing the upper edge portion to a beam material or the like on the upper floor and suspending it, or by adhering the side edge portion to a column material or the like. In the invention disclosed in the present application, the means for fixing the peripheral edge portion of the heat insulation material to the building structure is not particularly limited. And the spacer for attaching the heat insulation material disclosed in the present application is attached to a portion other than the peripheral edge portion of the heat insulation material arranged in such a manner, and functions to secure a ventilation space with a predetermined width between the heat insulation material and the outer wall material.

[0016] In the following, when explaining the relative positional relationship of parts and members and the direction of operation, the posture of the worker when fixing the heat insulation material from the indoor side of the building structure toward the back surface of the outer wall material is used as a reference, and the outdoor side is defined as the front and the indoor side is defined as the rear for explanation.

[0017] Figs. 1 to 4 show a spacer for attaching a heat insulation material according to an embodiment of the invention disclosed in the present application and a method for installing the heat insulation material using the spacer for attaching the heat insulation material. This spacer 1 for attaching the heat insulation material includes a wall surface fixing member 2 fixed to the back surface of the outer wall material 8 and a heat insulation material hanging member 3 joined to the wall surface fixing member 2.

[0018] The wall surface fixing member 2 is formed of a metal material or a synthetic resin material having appropriate rigidity. The wall surface fixing member 2 includes a pedestal portion 21 fixed to the back surface of the outer wall material 8, a space holding portion 22 protruding rearward (indoors) from the pedestal portion 21, and an expanding guide portion 23 and a joining shaft portion 24 that continuously extend in a direction perpendicular to the surface of the outer wall material 8 from the space holding portion 22.

[0019] The pedestal portion 21 is a thin plate-shaped portion having a rectangular, circular or other appropriate front shape, and one side thereof is fixed to the back surface of the outer wall material 8 using, for example, an adhesive, a double-sided tape, or the like. An adhesive tape may be pre-stuck on one side of the pedestal portion 21.

[0020] The space holding part 22 is a part that secures the width of the ventilation space 9, which will be described later, by its axial length (the protruding length from the back surface of the outer wall material 8). The space holding part 22 in the exemplary embodiment has a substantially cylindrical shape, but its shape may be, for example, polygonal cylindrical, or may be a form in which a plurality of thin parts are arranged in parallel. That is, the shape of the space holding part 22 is basically arbitrary within the range that has a certain protruding length and exhibits strength such that it is not easily buckled or crushed by the compressive force acting in the direction perpendicular to the surface of the outer wall material 8. Also, if the end face area on the outer wall material 8 side is sufficiently large, the pedestal part 21 can be omitted and the space holding part 22 can be directly fixed to the outer wall material 8.

[0021] The joining shaft part 24 is a substantially cylindrical part having a relatively smaller cross-section than the space holding part 22. By extending the joining shaft part 24 from the space holding part 22 toward the indoor side and inserting the heat insulating material hanging member 3 into the joining shaft part 24, the heat insulating material hanging member 3 can be held by the wall surface fixing member 2. The axial length of the joining shaft part 24 is set in consideration of, for example, the balance with the axial length of the joining cylinder part 31 of the heat insulating material hanging member 3, which will be described later. Also, the cross-sectional shape of the joining shaft part 24 is not limited to the substantially cylindrical shape as illustrated, as long as it fits with the joining cylinder part 31 of the heat insulating material hanging member 3, which will be described later.

[0022] The expanding guide part 23 provided between the space holding part 22 and the joining shaft part 24 is formed such that its peripheral surface expands in diameter without a step from the connection location with the joining shaft part 24 toward the connection location with the space holding part 22. Its peripheral surface can be, for example, a smooth conical shape, but in the exemplary embodiment, it is formed in a conical shape with the indoor side being pointed, and more specifically, a rotating body shape (so-called horn shape, trumpet shape) with an arc-shaped curve convex toward the axis as the generatrix. However, the front shape (cross-sectional shape in the direction perpendicular to the axis) of the expanding guide part 23 is not necessarily limited to a circular shape, and may be, for example, an elliptical shape or a polygonal shape.

[0023] An annular groove 25 is formed at the connection location between the joining shaft part 24 and the expanding guide part 23, which runs around the outer peripheral surface along the plane perpendicular to the axis.

[0024] The heat insulation material hanging member 3 is formed of a metal material or a synthetic resin material having appropriate rigidity and appropriate plasticity or elastoplasticity. The material may be the same as or different from that of the wall surface fixing member 2. The heat insulation material hanging member 3 includes a joining cylinder portion 31 inserted into the joining shaft portion 24 of the wall surface fixing member 2, and a hanging portion 32 continuously extending rearward (in a direction away from the outer wall member 8) from the joining cylinder portion 31.

[0025] In an exemplary form, the joining cylinder portion 31 has a substantially cylindrical shape that can be inserted into the connection shaft portion 24 of the wall surface fixing member 2, and a hollow portion that is sufficiently longer than the joining shaft portion 24 is formed inside thereof. The inner diameter of the hollow portion is preferably such that it can be lightly inserted into the joining shaft portion 24. A plurality of (four in the exemplary form) slits 33 extending in the axial direction from an intermediate portion near the hanging portion 32 and opening to the side of the wall surface fixing member 2 are formed in the joining cylinder portion 31. Further, an annular protrusion 34 that goes around the inner peripheral surface along an axis-orthogonal plane is formed on the inner peripheral surface near the rear end (the closed end on the indoor side) of the slit 33.

[0026] The hanging portion 32 is coupled coaxially with the joining cylinder portion 31 behind (on the indoor side) of a portion (cylindrical portion 35) where the slit 33 is not formed. A pointed tip portion 36 bent in a hook shape is formed at the rear end of the hanging portion 32.

[0027] Here, while referring to FIG. 2, the lengths of each part will be specifically described. Assuming that the axial length of the hollow portion of the joining cylinder portion 31 is A, the length of the slit 33 is B, and the axial length of the cylindrical portion 35 where the slit 33 is not formed is C, then [A = B + C]. And the axial length C of the cylindrical portion 35 is set to be at least equal to or greater than the axial length D of the joining shaft portion 24 of the wall surface fixing member 2, that is, [C ≧ D]. The length B of the slit 33 has no particular limitation within a range exceeding the axial length D of the joining shaft portion 24, but is set to be about 2 to 3 times the axial length D of the joining shaft portion 24 or about 3 to 4 times the outer diameter E of the joining cylinder portion 31 as a guide. Also, the combined length F of the cylindrical portion 35 and the hanging portion 32 is set to be less than the thickness of the heat insulation material 7, more specifically, about 1 / 2 to 2 / 3 of the thickness of the heat insulation material 7.

[0028] <00> A method of disposing the heat insulating material 7 on the back surface of the outer wall material 8 using the heat insulating material attachment spacer 1 configured as described above will be described.

[0029] First, as shown in FIG. 3(a), a plurality of wall surface fixing members 2 are attached to the back surface of the outer wall material 8 with appropriate intervals provided vertically and horizontally. For this attachment, an adhesive or an adhesive tape is used. This operation may be performed in a state where the wall surface fixing member 2 and the heat insulating material hanging member 3 are joined in advance, or after attaching the plurality of wall surface fixing members 2 to the outer wall material 8, the heat insulating material hanging member 3 may be joined to those wall surface fixing members 2.

[0030] Then, as shown in FIGS. 3(b) and 4(a), the heat insulating material 7 is pressed against the plurality of heat insulating material attachment spacers 1 fixed to the outer wall material 8, and the heat insulating material 7 is fixed by causing the pointed tip portion 36 of the hanging portion 32 to bite into the heat insulating material 7. Since the pointed tip portion 36 of the hanging portion 32 is refracted in a hook shape, even if an operator presses the heat insulating material 7 against the heat insulating material attachment spacer 1 from the indoor side, it is difficult for the pointed tip portion 36 to pierce the hand. Further, by turning the pointed tip portion 36 upward, the holding state of the heat insulating material 7 becomes more stable.

[0031] When the hanging part 32 is inserted to an appropriate depth inside the heat insulating material 7, as shown in Fig. 4(b), gently strike the rear end of the hanging part 32 with a hammer or the like from the indoor side. The pointed tip 36 of the hanging part 32 is bent, which is convenient for making this strike easier. When the heat insulating material hanging member 3 is pushed toward the wall surface fixing member 2 by the strike, as shown in Fig. 4(c), the peripheral surface of the joint cylinder part 31 divided by the slit 33 gradually curves along the expanded guide part 23 of the wall surface fixing member 2 while pressing outward in the radial direction, expands in an umbrella shape (or petal shape), and the expanded part is pressed against the outdoor surface of the heat insulating material 7. When the heat insulating material hanging member 3 is pushed in until the joint shaft part 24 of the wall surface fixing member 2 fits into the cylindrical part 35 of the joint cylinder part 31, the peripheral surface of the joint cylinder part 31 divided by the slit 33 fully expands and is pressed against the surface of the heat insulating material 7. In this way, a ventilation space 9 with a width corresponding to the axial length of the space holding part 22 (when there is a pedestal part 21, the dimension including its thickness) is formed between the outer wall material 8 and the heat insulating material 7.

[0032] When the peripheral surface of the joint cylinder part 31 divided by the slit 33 expands to such an extent that it is substantially orthogonal to the axis of the joint cylinder part 31, the annular protrusion 34 formed on the inner peripheral surface of the joint cylinder part 31 engages with the annular groove 25 by getting over the joint shaft part 24 of the wall surface fixing member 2, thereby joining the heat insulating material hanging member 3 and the wall surface fixing member 2 in such a way that they are not easily separated. However, the joining means between the heat insulating material hanging member 3 and the wall surface fixing member 2 is not limited to the engaging form of the annular groove 25 and the annular protrusion 34 as exemplified. For example, it can be configured using an appropriate uneven engaging form such as an engaging form of a protrusion (convex part) and a groove (concave part) that are not continuous in the circumferential direction, a form in which a plurality of sets of protrusions and grooves provided at intervals in the axial direction engage with each other, a form in which the positional relationship between the protrusion and the groove is reversed inside and outside, etc. Also, the position where these unevennesses are engaged is not limited to the connection part between the expanded guide part 23 and the joint shaft part 24. For example, in the vicinity of the joint shaft part 24 including the indoor side end of the joint shaft part 24 (this "vicinity" also includes the position of the annular groove 25 described above), and the inner peripheral surface of the corresponding joint cylinder part 31, it can be appropriately selected within the range.

[0033] As described above, if the spacer 1 for attaching the heat insulating material according to the invention disclosed in the present application is adopted, the work of arranging the heat insulating material 7 on the outdoor side of the building body and forming the ventilation space 9 between the heat insulating material 7 and the outer wall material 8 can be easily and quickly carried out by the work from the indoor side. For the work of attaching the spacer 1 for attaching the heat insulating material to the outer wall material 8, an adhesive or an adhesive tape can be used, and for the work of attaching the heat insulating material 7 to the spacer 1 for attaching the heat insulating material, it is only necessary to tap with a hammer, so the workability is extremely good and the safety is also high. Thus, an external heat insulation and ventilation structure having a ventilation space 9 on the back side of the outer wall material 8 can be preferably realized, and dew condensation prevention in the wall body and optimization of the heat insulation efficiency can be achieved.

[0034] It should be noted that the technical scope of the invention disclosed in the present application should not be construed as being limited by the illustrated embodiments, but should be conceptually construed based on the description in the claims. The names of the components used in the claims and the specification are for convenience of specifically understanding the invention, and the names do not limit the concept and properties of the components more than necessary. When implementing the invention disclosed in the present application, the detailed shape, dimensions, structure, material, quantity, combination form with other elements, relative positional relationship, etc. of the components not specifically specified in the claims can be appropriately modified within the range of using the operating principle substantially equivalent to the illustrated embodiment or within the range of obtaining an operating effect substantially equivalent to or more than that of the illustrated embodiment.

[0035] In addition, the embodiments and other matters disclosed in this specification can also be grasped as the technical idea shown in the following supplementary note. (Supplementary Note 1) A spacer for attaching a heat insulating material for securing a space with a predetermined width between the wall surface and the heat insulating material when arranging a flexible heat insulating material along an appropriate wall surface, comprising a wall fixing member fixed to the wall surface and a heat insulating material hanging member joined to the wall fixing member. The wall fixing member includes a space holding portion having a predetermined axial length and fixed to the wall surface, and an expansion guiding portion and a joining shaft portion that are continuous with the space holding portion and extend in a direction perpendicular to the surface of the wall surface. The expansion guiding portion is formed such that its circumferential surface expands in diameter without a step from the connection portion with the joining shaft portion to the connection portion with the space holding portion. The heat insulating material hanging member includes a joining cylinder portion having an axial length larger than the axial length of the joining shaft portion and inserted into the joining shaft portion, and a hanging portion that is continuous with the joining cylinder portion and extends in a direction away from the wall surface. A plurality of slits extending in the axial direction thereof and opening toward the wall fixing member side are formed in the joining cylinder portion. When the joining cylinder portion of the heat insulating material hanging member is inserted into the joining cylinder 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 side, the circumferential surface of the joining cylinder portion divided by the slit expands while curving along the expansion guiding portion of the wall fixing member and is pressed against the surface of the heat insulating material, thereby forming a space having a width corresponding to the axial length of the space holding portion between the heat insulating material and the wall surface. A spacer for attaching a heat insulating material configured as described above. (Appendix 2) In the spacer for attaching a heat insulating material according to Appendix 1, The circumferential surface of the expansion guiding portion is formed in a shape of a rotating body having a curve convex toward the axial center as a generatrix. A spacer for attaching a heat insulating material, characterized in that. (Appendix 3) In the spacer for attaching a heat insulating material according to Appendix 1 or 2, Joining means for joining the heat insulating material hanging member and the wall fixing member when the portion divided by the slit expands is formed using an appropriate uneven engagement form between a vicinity portion of the joining shaft portion and an inner circumferential surface of the joining cylinder portion. A spacer for attaching a heat insulating material, characterized in that. (Appendix 4) In the spacer for attaching a heat insulating material according to any one of Appendices 1 to 3, A pointed tip portion that is bent is formed at the rear end of the hanging portion. A spacer for attaching a heat insulating material, characterized by this. (Appendix 5) In the spacer for attaching a heat insulating material according to any one of Appendices 1 to 4, A pedestal portion having a cross-sectional area larger than that of the space holding portion is provided in the space holding portion of the wall surface fixing member. A spacer for attaching a heat insulating material, characterized by this. (Appendix 6) The wall surface fixing member of the spacer for attaching a heat insulating material according to any one of Appendices 1 to 5 is fixed to the back surface of the outer wall material with the joining shaft portion facing the indoor side, The joining cylinder portion of the heat insulating material hanging member is inserted into the joining shaft portion, A heat insulating material having flexibility is hung on the hanging portion of the heat insulating material hanging member, The heat insulating material hanging member with the heat insulating material hung thereon is pressed toward the wall surface fixing member side, and the peripheral surface of the joining cylinder portion divided by the slit is expanded along the expanding guiding portion of the wall surface fixing member and pressed against the surface of the heat insulating material, whereby a ventilation space having a width corresponding to the axial length of the space holding portion is formed between the heat insulating material and the back surface of the outer wall material. A heat insulation structure, characterized by this.

Industrial Applicability

[0036] The invention disclosed in the present application can be widely used not only in the heat insulation structure of the outer periphery of a building as exemplified, but also in a construction site where a flexible mat-like covering material or shielding material is arranged with a predetermined space provided between the material and an appropriate wall surface.

Explanation of Signs

[0037] 1 Spacer for attaching a heat insulating material 2 Wall surface fixing member 21 Pedestal portion 22 Space holding portion 23 Expanding guiding portion 24 Joining shaft portion 25 Annular groove 3 Heat insulation material hanging member 31 Joint cylinder part 32 Hanging part 33 Slit 34 Annular protrusion 35 Cylindrical part 36 Pointed tip part 7 Heat insulation material 8 Outer wall material 9 Ventilation space

Claims

1. A heat insulation material mounting spacer for securing a space of a predetermined width between a wall surface and a heat insulation material when the flexible heat insulation material is arranged along the appropriate wall surface, comprising a wall surface fixing member fixed to the wall surface and a heat insulation material hanging member joined to the wall surface fixing member, wherein the wall surface fixing member includes a space holding portion having a predetermined axial length and fixed to the wall surface, and a spreading guide portion and a joining shaft portion that continuously extend in a direction perpendicular to the surface of the wall surface from the space holding portion, wherein the spreading guide portion is formed such that its peripheral surface expands in diameter without a step from the connection location with the joining shaft portion to the connection location with the space holding portion, wherein the heat insulation material hanging member includes a joining cylinder portion having an axial length larger than the axial length of the joining shaft portion and inserted into the joining shaft portion, and a hanging portion that continuously extends from the joining cylinder portion in a direction away from the wall surface, wherein a plurality of slits extending in the axial direction and opening to the wall surface fixing member side are formed in the joining cylinder portion, wherein when the joining cylinder portion of the heat insulation material hanging member is inserted into the joining shaft portion of the wall surface fixing member and the heat insulation material is hung on the hanging portion of the heat insulation material hanging member, and the heat insulation material hanging member is pressed toward the wall surface fixing member side, the peripheral surface of the joining cylinder portion divided by the slit expands while curving along the spreading guide portion of the wall surface fixing member and is pressed against the surface of the heat insulation material, thereby forming a space having a width corresponding to the axial length of the space holding portion between the heat insulation material and the wall surface A heat insulation material mounting spacer configured as described above.

2. The heat insulation material mounting spacer according to claim 1, wherein the peripheral surface of the spreading guide portion is formed in a shape of a rotating body having a curve convex toward the axis as a generatrix. A heat insulation material mounting spacer characterized by the above.

3. The heat insulation material mounting spacer according to claim 1 or 2, wherein joining means for joining the heat insulation material hanging member and the wall surface fixing member when the portion divided by the slit expands is formed using an appropriate concave-convex engagement form between a vicinity location of the joining shaft portion and an inner peripheral surface of the joining cylinder portion. A heat insulation material mounting spacer characterized by the above.

4. The heat insulation material mounting spacer according to claim 1 or 2, wherein a pointed tip portion bent at an extending end of the hanging portion in a direction away from the wall surface is formed. A heat insulation material mounting spacer characterized by the above.

5. In the spacer for attaching a heat insulating material according to claim 1 or 2, a pedestal portion having a cross-sectional area larger than that of the space holding portion is provided in the space holding portion of the wall surface fixing member. The spacer for attaching a heat insulating material is characterized by this.

6. The wall surface fixing member of the spacer for attaching a heat insulating material according to claim 3 is fixed to the back surface of the outer wall material with the joining shaft portion facing the indoor side, the joining cylinder portion of the heat insulating material hanging member is inserted into the joining shaft portion, a heat insulating material having flexibility is hung on the hanging portion of the heat insulating material hanging member, the heat insulating material hanging member on which the heat insulating material is hung is pressed toward the wall surface fixing member side, and the peripheral surface of the joining cylinder portion divided by the slit is expanded along the expanding guide portion of the wall surface fixing member and pressed against the surface of the heat insulating material, whereby a ventilation space having a width corresponding to the axial length of the space holding portion is formed between the heat insulating material and the back surface of the outer wall material. The heat insulation structure is characterized by this.

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