Wall insulation joint members and wall insulation structures

Abstract

To provide a joint member 6 excellent in workability, which can easily hold wall heat insulating materials together regardless of the order of construction when board-like wall heat insulating materials made of foamed resin moldings are erected adjacent to each other. [Solution] The joint member 6 comprises a clamping piece 61 sandwiched between the side edges of adjacent wall insulation materials 2A, 2B, a pair of left and right backing pieces 62, 63 extending on one side and the other from the rear end edge of the clamping piece 61, a fixed surface pressing piece 64 extending from the front end edge of the clamping piece 61 so as to face the backing piece 62 on the first-construction side, and a movable surface pressing piece 65 positioned so as to face the backing piece 63 on the second-construction side in approximately the same plane as the fixed surface pressing piece 64, and the movable surface pressing piece 65 is attached so that it can move to a position where it does not extend beyond the other side of the clamping piece 61 when viewed from the front.

Description

[Technical Field]

[0001] The invention disclosed in this application relates to a joint member for wall insulation used in a thermal insulation method for the outer periphery of a steel-framed building, and to a wall insulation structure using the joint member. [Background technology]

[0002] A known wall insulation structure used on the periphery of a steel-framed building involves erecting an interior wall base panel, which integrates a frame and insulation material, within the structural plane of a framework surrounded by columns and beams at the periphery or on the interior side of the structural plane to form an insulation line, and then installing interior wall finishing materials such as gypsum board or wallpaper on the interior wall base panel. The frame of such an interior wall base panel is formed using wood or lightweight steel, and the insulation material is often a board-shaped insulation material made of a foamed resin such as polystyrene foam, polyethylene foam, rigid urethane foam, or phenolic foam. The present applicant has also proposed and put into practical use such wall insulation structures in which interior wall base panels are erected on the interior side of a framework, for example, in Patent Documents 1 and 2.

[0003] In such wall insulation structures, the interior wall base panels are fixed to the columns and beams that make up the framework via metal mounting members. Therefore, even if the interior wall base panels are erected slightly away from the framework, a thermal bridge is formed through the mounting members connecting the framework and the interior wall base panels, which can become a weakness in the insulation design. This is particularly a concern when lightweight steel, which has high thermal conductivity, is used for the frame that makes up the interior wall base panels. Furthermore, the gaps that form between the framework and the interior wall base panels around the mounting members are also likely to cause breaks in the insulation line.

[0004] The present applicant has developed a practical wall insulation structure in which boards made of rigid foamed resin, which are highly self-supporting and easily achieve uniform thermal insulation performance, are installed as they are within the structural surface of a frame frame without gaps. This wall insulation structure is disclosed, for example, in Patent Document 3. In this wall insulation structure, the lower and upper edges of the wall insulation are simply fixed to dedicated metal fittings attached to the foundation and under the beams, respectively, to hold the wall insulation in an upright position. Furthermore, the side edges of adjacent wall insulation materials are held flush and continuous using a joint member that is generally H-shaped in plan view and has back-to-back grooves that can hold the side edges. A similar shape of such a joint member, generally H-shaped in plan view, inserted between adjacent boards is disclosed, for example, in Figure 6(a) of Patent Document 2. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Japanese Patent Application Publication No. 10-266417 [Patent Document 2] Japanese Patent Application Publication No. 10-280587 [Patent Document 3] Japanese Patent Application Publication No. 2023-108965 Summary of the Invention [Problem to be solved by the invention]

[0006] In the aforementioned wall insulation structure, where board-shaped wall insulation materials are arranged side by side along the structural surface of the building, the wall insulation materials are erected sequentially in this order: first, the wall insulation material to be installed first is fixed, then its side edge is fitted from the side into the groove on one side of an approximately H-shaped joint member, and then the side edge of the wall insulation material to be installed later is inserted from the side into the groove on the other side of the joint member to position it. In other words, because the order of installation and the insertion direction of the wall insulation materials and joint member are regulated to one direction, installation must be done either clockwise or counterclockwise, which can make it difficult to insert the last piece of insulation into the groove of the approximately H-shaped joint member.

[0007] The invention disclosed in this application was conceived in light of the above circumstances, and aims to propose a joint member with excellent workability that can easily hold adjacent wall insulation materials together regardless of the order of construction when self-supporting wall insulation materials made of foamed resin molded board materials, etc. are erected adjacent to each other along the structural surface of a framework, and a wall insulation structure using this joint member. [Means for solving the problem]

[0008] In order to achieve the above-mentioned object, the invention disclosed in this application adopts a basic configuration of a joint member that is interposed between adjacent board-shaped wall insulation materials and holds the wall insulation materials flush with each other, comprising a clamping piece that has a depth dimension that matches the thickness of the wall insulation materials and is sandwiched between the side edges of adjacent wall insulation materials, a front fixed portion provided on one side of the clamping piece, a fixed surface pressing piece that extends to one side from the front end edge of the clamping piece perpendicular to the clamping piece and opposite the front fixed portion, and a movable surface pressing piece that is arranged in approximately the same plane as the fixed surface pressing piece and is attached so that it can move from a position that does not extend beyond the other side of the clamping piece to a position that extends beyond the other side of the clamping piece.

[0009] In the joint member of the wall insulation material having this basic configuration, it is preferable that the pre-fixing portion is constituted by a backing piece on the pre-installation side that extends from the rear end edge of the clamping piece perpendicular to the clamping piece to one side of the clamping piece.

[0010] Alternatively, the leading fixing portion may be configured by a puncturing piece that protrudes from an appropriate position in the middle of the clamping piece in the depth direction to one side of the clamping piece, perpendicular to the clamping piece.

[0011] In addition, the joint member of the wall insulation material having the above-mentioned basic configuration may be provided with a backing piece on the post-installation side that extends from the rear end edge of the clamping piece perpendicular to the clamping piece to the other side of the clamping piece.

[0012] In addition, the joint member of the wall insulation material having the above-mentioned basic configuration can also be configured so that a portion of the movable surface pressing piece is overlapped on the fixed surface pressing piece, and the overlapping portion is axially attached via a pin node at one location, allowing the movable surface pressing piece to rotate approximately in the same plane as the fixed surface pressing piece.

[0013] In this case, it is more preferable that a temporary fixing means for fixing the movable surface pressing piece in a position protruding on the other side of the clamping piece is provided at the point of interference between the movable surface pressing piece and the clamping piece or the fixed surface pressing piece.

[0014] In addition, the wall insulation structure invention disclosed in this application is characterized in that the aforementioned joint members are interposed at the points where board-shaped wall insulation materials are installed adjacent to each other, thereby keeping the wall insulation materials flush with each other. [Effects of the Invention]

[0015] The joint member constructed as described above allows adjacent board-shaped insulation panels made of foamed resin to be installed side by side, and can be easily and accurately held in place, regardless of the order of installation, from either the left or right side. This allows for efficient construction of a wall insulation structure with continuous insulation lines within the structural surfaces of the outer perimeter of a steel-framed building. [Brief explanation of the drawings]

[0016] [Figure 1] 1 is a vertical cross-sectional view of the outer periphery of a steel-framed building to which the invention disclosed in the present application is applied. [Figure 2] 1A, 1B, and 1C are a front view, a top view, and a right side view, respectively, showing an exploded state of a joint member according to an embodiment of the invention disclosed in the present application. [Figure 3] 3A is a front view, FIG. 3B is a top view, and FIG. 3C is a right side view showing the connection of the joint member in FIG. 2. [Figure 4]4A and 4B are a front view and a cross-sectional view showing a state in which the joint member of FIG. 3 is interposed between adjacent portions of wall insulation. [Figure 5] 4 is a perspective view showing a procedure for interposing the joint member of FIG. 3 between adjacent portions of wall insulating material. [Figure 6] FIG. 10 is a perspective view showing another embodiment of the joint member. DETAILED DESCRIPTION OF THE INVENTION

[0017] Figure 1 shows an overview of a wall insulation structure applied to the perimeter of a steel-frame building. This wall insulation structure forms an insulation line between the framework 1 and an interior wall substrate 31 by erecting board-shaped wall insulation material 2 on the indoor side within the structural surface of the framework 1, which is surrounded by columns (not shown) and beams 11 at the perimeter. In Figure 1, reference numeral 4 denotes exterior wall material, 5 denotes foundation, 12 denotes panel frames assembled within the structural surface of the framework 1, 32 denotes first-floor floor members, 33 denotes first-floor ceiling members, and 34 denotes second-floor floor members. In this invention, the "board-shaped wall insulation material" refers to a flat, plate-like molded product several centimeters to several tens of centimeters thick made of foamed resin such as polystyrene foam, polyethylene foam, rigid urethane foam, or phenolic foam, which is rigid enough to be self-supporting (i.e., does not deform irregularly).

[0018] The wall insulation 2 is installed over almost the entire under-beam dimension of each floor. In the first floor portion of the exemplary embodiment, the lower edge of the wall insulation 2 is fixed via appropriate mounting means to a position abutting or close to the top edge of the foundation 5, and the upper edge of the wall insulation 2 is fixed via appropriate mounting means to a position abutting or close to the underside of the beam 11. Note that the invention disclosed in this application does not particularly limit the detailed fit of the joint between the foundation 5 or beam 11 and the wall insulation 2.

[0019] The main feature of the invention disclosed in this application is a joint member that is interposed where multiple sheets of wall insulation 2 are installed adjacent to each other in the horizontal direction (the direction perpendicular to the surface in Figure 1). One embodiment of the joint member is shown in Figures 2 and 3, and its usage is shown in Figures 4 and 5. In the following, when describing the positional relationship of each part of the joint member and the direction of operation, the depth direction (front-to-back and front-to-back directions), horizontal direction (left-to-right directions), and height direction (up-and-down directions) will be specified based on the viewpoint of Figure 4(a) in which the joint member 6 interposed between adjacent sheets of wall insulation 2 is viewed from the indoor side (the viewpoint facing the indoor-side surface of the wall insulation 2).

[0020] The illustrated joint member 6 comprises a clamping piece 61 that is sandwiched between the side edges of adjacent wall insulation materials 2, a backing piece 62 on the first construction side that extends from the rear edge (outdoor edge) of the clamping piece 61 to one side of the clamping piece 61, perpendicular to the clamping piece 61, a backing piece 63 on the second construction side that extends from the rear edge (outdoor edge) of the clamping piece 61 to the other side of the clamping piece 61, perpendicular to the clamping piece 61, a fixed surface pressing piece 64 that extends to one side from the front edge (indoor edge) of the clamping piece 61, perpendicular to the clamping piece 61, so as to face the backing piece 62 on the first construction side, and a movable surface pressing piece 65 that is arranged in approximately the same plane as the fixed surface pressing piece 64 and is attached so as to be movable from a position that does not extend beyond the other side of the clamping piece 61 to a position that extends beyond the other side of the clamping piece 61.

[0021] The joint member 6 illustrated in the example has its respective parts integrally processed by cutting and bending thin steel or aluminum plates, and all parts have the same plate thickness (approximately 0.5 mm to 1.0 mm). However, instead of metal plates with high thermal conductivity, the material of the joint member 6 can also be hard synthetic resin with low thermal conductivity, hard processed paper (fiber board), etc. In that case, the plate thickness of all parts does not need to be the same.

[0022] The clamping piece 61 is in the form of a flat, thin plate of a substantially long rectangle, and is formed so that its depth dimension (short side dimension in the illustrated embodiment) matches the plate thickness of the wall insulation material 2. Note that the plate thicknesses of adjacent wall insulation materials 2 are basically the same.

[0023] In the illustrated embodiment, the backing piece 62 on the first-installation side has a generally square shape in front view and protrudes to one side (the left side in FIG. 4(a)) from the upper half of the clamping piece 61. This backing piece 62 on the first-installation side constitutes the "first fixing portion provided on one side of the clamping piece" described in the claims. Meanwhile, the backing piece 63 on the second-installation side has a generally square shape in front view, similar to the backing piece 62 on the first-installation side, in the illustrated embodiment, and protrudes to the other side (the right side in FIG. 4(a)) from the lower half of the clamping piece 61, and is disposed on the same plane as the backing piece 62 on the first-installation side. However, the front shapes and protruding dimensions to the left and right of both backing pieces 62, 63 do not necessarily have to be the same, and the protruding positions in the up-down direction are not particularly limited.

[0024] In the illustrated embodiment, the fixed front pressing piece 64 has a substantially square shape and is the same size as the backing piece 62 on the first-installation side, and protrudes to one side from the upper half of the clamping piece 61, and is arranged so as to overlap the backing piece 62 on the first-installation side when viewed from the front. The opposing distance between the fixed front pressing piece 64 and the backing piece 62 on the first-installation side is set to match the plate thickness of the wall insulation material 2. Note that the front shape and dimensions of this fixed front pressing piece 64 do not need to be the same as those of the opposing backing piece 62 on the first-installation side.

[0025] In the illustrated embodiment, the movable surface holding piece 65 has a substantially square shape that is slightly larger than the fixed surface holding piece 64. One corner of the movable surface holding piece 65 overlaps a corner of the fixed surface holding piece 64 that is closest to the clamping piece 61 (the lower right corner in the illustrated embodiment), and the overlapping portion is axially attached via a pin node 66. This pin node 66 is, for example, a pop rivet (blind rivet). This allows the movable surface holding piece 65 to be held so as to be able to rotate with appropriate frictional resistance around the pin node 66 in substantially the same plane as the fixed surface holding piece 64. Note that the expression "substantially" in the present specification is used to mean that a difference in level (a plane misalignment) equivalent to one plate thickness occurs between the fixed surface holding piece 64 and the movable surface holding piece 65.

[0026] The rotation range of the movable front pressing piece 65 is set to include a position where it does not extend beyond the clamping piece 61 to the other side (right side) and where it completely opens the backing piece 63 on the later-installed side in a front view (this is referred to as the "open position"), and a position where it extends beyond the clamping piece 61 to the other side and overlaps the backing piece 63 on the later-installed side in a front view (this is referred to as the "opposing position"). In the illustrated embodiment, when viewed from the front in FIG. 4(a), the movable front pressing piece 65 is in the open position when it is located to the lower left of the pin joint 66, and in the opposed position when it is located to the lower right of the pin joint 66, and it rotates approximately 90 degrees between these positions. However, there is no particular problem if the movable front pressing piece 65 rotates beyond 90 degrees, and in the illustrated embodiment, it is possible to rotate 360 ​​degrees.

[0027] When the movable front holding piece 65 is in the opposing position, it is desirable that the distance between it and the backing piece 63 on the later-installed side match the plate thickness of the wall insulation material 2, just like the fixed front holding piece 64 described above. Therefore, this joint member 6 employs a correction means for filling in the dimensional difference equivalent to one plate thickness. Specifically, the movable front holding piece 65 is embossed on the back side near a position diagonal to the pin node 66 by approximately one plate thickness to form a hemispherical bulge 67, and the distance between the top surface of the back side of the bulge 67 and the backing piece 63 on the later-installed side matches the plate thickness of the wall insulation material 2. Note that such bulges may be formed in multiple locations.

[0028] As an alternative to stamping deformation, other correction means may be used, for example, by bending the middle part of the movable front pressing piece 65 in a mountain-valley shape by the thickness of one plate, and deforming part of it so that it is flush with the fixed front pressing piece 64, or by attaching a plate piece of the same thickness to an appropriate location on the back surface of the movable front pressing piece 65.

[0029] Furthermore, after the wall insulation material 2 is installed using this joint member 6, it is desirable that the movable front pressing piece 65 be held so that it does not easily move from the opposing position. Therefore, this joint member 6 is also provided with temporary fastening means for holding the movable front pressing piece 65 in the opposing position. In the illustrated embodiment, the portion of the movable front pressing piece 65 that interferes with the front end edge of the clamping piece 61 in the opposing position is stamped out on the back side by about one plate thickness to form a hemispherical protrusion 68, and the top surface of the back side of the protrusion 68 is pressed against the front end edge of the clamping piece 61 to make it difficult to rotate.

[0030] Note that, instead of the embossed deformation as illustrated, this temporary fastening means may be, for example, a claw piece cut out and raised on the back side of the movable front pressing piece 65 to hook onto the front edge of the clamping piece 61, or a protrusion may be formed on the front edge of the clamping piece 61 to hook onto the lower edge of the opposing movable front pressing piece 65. Furthermore, if the movable front pressing piece 65 can be held in the open position using a similar temporary fastening means, the ease of installation of the wall insulation material 2B on the later-installed side can be improved in the installation procedure described below.

[0031] Figure 5 shows the procedure for erecting wall insulation 2 using joint member 6 configured as described above. First, the lower and upper edges of the wall insulation 2A on the first-installed side are fixed to the foundation 5 and beam 11, respectively, by appropriate means. Then, the groove formed by the first-installed backing piece 62, clamping piece 61, and fixed front retaining piece 64 of joint member 6 is inserted from the side of the wall insulation 2A into an appropriate position in the middle of the side edge in the height direction. Next, while supporting the movable front retaining piece 65 in the open position, the wall insulation 2B on the second-installed side is erected. At this time, because the backing piece 63 on the second-installed side is entirely open to the front, the wall insulation 2B on the second-installed side can be pushed in from the front, rather than from the side as in the conventional method, to be adjacent to the wall insulation 2A on the first-installed side. Once the later-installed wall insulation 2B is positioned by abutting against the later-installed backing piece 63, the movable surface pressing piece 65 is rotated to the opposing position to press down the surface of the later-installed wall insulation 2B, and then the lower and upper edges of the wall insulation 2B are fixed to the foundation 5 and beam 11 by appropriate means. In this way, the surfaces of adjacent wall insulations 2A, 2B can be precisely aligned when erected. In addition, in locations where adjacent wall insulations 2A, 2B need to be erected in reverse order, the joint member 6 can be used by being flipped 180 degrees when viewed from the front.

[0032] FIG. 6 is a perspective view showing another embodiment of a joint member. Parts with the same functions or actions as those of the previously described embodiment are designated by the same reference numerals. This joint member 60 is formed so that the depth dimension of the clamping piece 61 is slightly smaller than the thickness of the wall insulation material 2. Instead of the backing piece 62 on the first-installation side in the previously described embodiment, a piercing piece 69 protrudes from the clamping piece 61 to one side, perpendicular to the clamping piece 61. The piercing piece 69 is located at a depthwise recessed position from the front edge of the clamping piece 61 by approximately 1 / 2 to 2 / 3 of the thickness of the wall insulation material 2. In the illustrated embodiment, two notches extending in the depthwise direction are formed near the top and bottom of the clamping piece 61, and the upper and lower portions are bent to one side. The piercing piece 69 is formed so that its tip is sharply pointed and has a roughly triangular front shape, and is inserted into the side edge of the wall insulation material 2. This piercing piece 69 constitutes the "fixed tip portion provided on one side of the clamping piece" described in the claims.

[0033] Furthermore, the movable front pressing piece 65 in this joint member 60 has a slightly different front shape from that of the previously described embodiment, and the position of the pin joint 66 is also positioned higher than in the previously described embodiment, but the basic structure, function, and rotational manner are the same as those of the previously described embodiment.

[0034] It should be noted that this joint member 60 does not have the backing piece 63 on the post-installation side in the previously described embodiment. This joint member 60 is used in areas where the wall insulation 2 is erected in a manner that will prevent it from tipping backward, for example by abutting against an appropriate support member 13 placed at the rear (outdoor side). Examples of such support members 13 include studs, furring strips, and diagonal braces that are installed within the structural surface of the framework.

[0035] In this case, the first-installed wall insulation 2A is installed in a predetermined position and secured by appropriate means. The fixed surface retaining piece 64 of the joint member 60 is then aligned along the surface of the wall insulation 2A, while the puncture piece 69 is pierced into the appropriate vertical midpoint of the side edge of the wall insulation 2A to secure it in place. The puncture piece 69 has an appropriate vertical clearance and is parallel to the fixed surface retaining piece 64. Therefore, when the puncture piece 69 is pierced into the side edge of the wall insulation 2A, movement in the front-to-back direction is restricted. Next, while the movable surface retaining piece 65 is supported in the open position, the second-installed wall insulation 2B is installed adjacent to it. Since the second-installed wall insulation 2B is installed without tipping backward, the movable surface retaining piece 65 is rotated to press down the surface of the second-installed wall insulation 2B, allowing the surfaces of the adjacent wall insulations 2A and 2B to be flush with each other. The position, number, front shape, etc. of the puncturing pieces 69 can be changed as appropriate.

[0036] As described above, the joint member of the present invention allows for efficient construction of wall insulation structures with continuous, gap-free insulation lines within the structural surfaces of the framework of the outer perimeter of a steel-framed building. This is efficient because it eliminates the need for tape or adhesives to temporarily fasten adjacent wall insulation pieces together (though tape may be used to seal the wall insulation pieces after installation to ensure airtightness). This ensures a certain level of construction accuracy regardless of the skill of the worker. Furthermore, even if the framework of the framework is deformed by earthquakes or vibrations, the wall insulation pieces remain freestanding without being affected. This joint member can also be used in areas where similar board- or panel-shaped sound-absorbing materials, fire-resistant coating materials, interior underlayment materials, etc. are continuously installed, in addition to panels made of foamed resin.

[0037] The technical scope of the invention disclosed in this application should not be interpreted as being limited by the illustrated embodiments, but should be interpreted conceptually based on the claims. The illustrated configuration of the insulation structure of a steel-framed building is one example, and when implementing the invention disclosed in this application, the detailed shape, dimensions, structure, material, quantity, connection form with other elements, relative positional relationship, etc. of the components not specifically specified in the claims can be appropriately modified within the scope of obtaining effects substantially equivalent to or greater than those of the illustrated embodiments.

[0038] The embodiments and other matters disclosed in this specification can also be understood as the technical ideas described in the following supplementary notes.

[0039] (Appendix 1) A joint member that is interposed between board-shaped wall insulation materials and installed at a location where the board-shaped wall insulation materials are installed adjacent to each other, and holds the wall insulation materials flush with each other, a clamping piece having a depth dimension corresponding to the thickness of the wall insulation material and sandwiched between the side edge portions of the adjacent wall insulation materials; a first fixing portion provided on one side of the clamping piece; a fixed front pressing piece that extends to one side from the front end edge of the clamping piece perpendicular to the clamping piece so as to face the front fixed portion; and a movable surface pressing piece that is disposed in approximately the same plane as the fixed surface pressing piece and is attached so as to be movable from a position where it does not protrude from the other side of the clamping piece to a position where it protrudes from the other side of the clamping piece. A joint member for wall insulation.

[0040] (Appendix 2) In the joint member of the wall insulation material described in Appendix 1, The front fixing portion is constituted by a backing piece on the front construction side that extends from the rear end edge of the clamping piece perpendicular to the clamping piece to one side of the clamping piece. A joint member for wall insulation.

[0041] (Appendix 3) In the joint member of the wall insulation material described in Appendix 1, The tip fixing portion is constituted by a puncture piece that protrudes from a suitable position in the middle of the clamping piece in the depth direction to one side of the clamping piece, perpendicular to the clamping piece. A joint member for wall insulation.

[0042] (Appendix 4) In the joint member of the wall insulation material described in any one of Supplementary Note 1 to Supplementary Note 3, A backing piece on the post-installation side is provided, which extends from the rear end edge of the clamping piece perpendicular to the clamping piece to the other side of the clamping piece. A joint member for wall insulation.

[0043] (Appendix 5) In the joint member of the wall insulation material described in any one of Supplementary Note 1 to Supplementary Note 4, A portion of the movable surface pressing piece is overlapped with the fixed surface pressing piece, and the overlapping portion is pivotally attached via a pin joint at one location, so that the movable surface pressing piece can rotate approximately in the same plane as the fixed surface pressing piece. A joint member for wall insulation.

[0044] (Appendix 6) In the joint member of the wall insulation material described in Appendix 5, A temporary fixing means for fixing the movable surface pressing piece to a position protruding on the other side of the clamping piece is provided at the interference point between the movable surface pressing piece and the clamping piece or the fixed surface pressing piece. A joint member for wall insulation.

[0045] (Appendix 7) A wall insulation structure characterized in that a wall insulation joint member described in any one of Appendices 1 to 6 is interposed at the location where board-shaped wall insulation materials are installed adjacent to each other, thereby keeping the wall insulation materials flush with each other. [Explanation of symbols]

[0046] 1 Frame frame 11 Beam material 12 panel frame 13 Support member 2(2A, 2B) Wall insulation 31 Interior wall base 32 First floor floor members 33 First floor ceiling components 34 Second floor floor material 4 Exterior wall materials 5 Basics 6, 60 Joint members 61 Pincer piece 62 Backing piece on one side (left side) 63 Backing piece on the other side (right side) 64 Fixed outer presser piece 65 Movable outer presser piece 66 pin nodes 67 Bulge 68 Protrusion 69 Puncture piece

Claims

1. A joint member that is interposed at a location where board-shaped wall insulation materials are installed so as to be adjacent to each other in the horizontal direction along the structural surface of the outer periphery of a building, and that holds the wall insulation materials flush with each other, a clamping piece having a depth dimension corresponding to the thickness of the wall insulation material and sandwiched between the side edge portions of the adjacent wall insulation materials; When the adjacent portions of the wall insulation materials are viewed from the indoor side of the structural frame, a pre-fixing portion is formed by a backing piece on the pre-construction side that extends from the outdoor edge of the clamping piece perpendicular to the clamping piece to either the left or right side of the adjacent portions; a fixed surface pressing piece that extends to one side from the indoor side edge of the clamping piece perpendicular to the clamping piece so as to face the front fixed part; The wall insulation material is then fitted with a support rod, which supports the support rod and the wall insulation material. The support rod is then fitted with a support rod, which supports the support rod and the wall insulation material. A joint member for wall insulation, comprising:

2. The joint member for the wall insulation material according to claim 1, A backing piece on the post-installation side is provided, which extends from the outside edge of the clamping piece perpendicular to the clamping piece to either the left or right side of the adjacent area. A joint member for wall insulation.

3. A joint member that is interposed at a location where board-shaped wall insulation materials are installed so as to be adjacent to each other in the horizontal direction along the structural surface of the outer periphery of a building, and that holds the wall insulation materials flush with each other, a sandwiching piece sandwiched between side edge portions of adjacent wall insulation materials; When the adjacent portions of the wall insulation materials are viewed from the indoor side of the structural frame, a leading fixing portion is formed by a puncture piece that protrudes from a suitable position in the middle of the depth direction of the clamping piece perpendicular to the clamping piece to either the left or right side of the adjacent portions; a fixed surface pressing piece that extends to one side from the indoor side edge of the clamping piece perpendicular to the clamping piece so as to face the front fixed part; The wall insulation material is then fitted with a support rod, which supports the support rod and the wall insulation material. The support rod is then fitted with a support rod, which supports the support rod and the wall insulation material. A joint member for wall insulation, comprising:

4. In the joint member of the wall insulation material described in claim 1, 2 or 3, A portion of the movable surface pressing piece is overlapped with the fixed surface pressing piece, and the overlapping portion is pivotally attached via a pin joint at one location, so that the movable surface pressing piece can rotate approximately in the same plane as the fixed surface pressing piece. A joint member for wall insulation.

5. In the joint member of the wall insulation material described in claim 4, A temporary fixing means for fixing the movable surface pressing piece to the position protruding from the other side of the clamping piece is provided at the interference point between the movable surface pressing piece and the clamping piece or the fixed surface pressing piece. A joint member for wall insulation.

6. A wall insulation structure characterized in that the wall insulation boards are maintained flush with each other by interposing a wall insulation joint member as described in claim 1, 2 or 3 at the locations where the wall insulation boards are installed adjacent to each other.

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