Joint member of wall thermal insulation material and wall thermal insulation structure

Abstract

The present invention provides a joint member (6) which, when erecting members of board-like wall thermal insulation material (2) formed from molded resin foam bodies adjacent to each other, is capable of easily holding the members of wall thermal insulation material (2) together regardless of the order in which the members are constructed, and which is excellent in workability. The joint member (6) is provided with: a sandwiched piece (61) to be sandwiched between the lateral edges of mutually adjacent members of wall thermal insulation material (2A, 2B); a pair of left and right backing pieces (62, 63) projecting out to one side and the other side, respectively, from a rear-end edge of the sandwiched piece (61); a fixed front-pressing piece (64) protruding out from a front-end edge of the sandwiched piece (61) so as to face the backing piece (62) on the side to be constructed first; and a movable front-pressing piece (65) disposed in substantially the same plane as the fixed front-pressing piece (64) so as to face the backing piece (63) on the side to be constructed second. The movable front-pressing piece (65) is attached so as to be movable to a position where the movable front-pressing piece (65) does not stick out on the other side of the sandwiched piece (61) in a front view.

Description

Joint members and wall insulation structures for wall insulation materials

[0001] The invention disclosed in this application relates to a joint member for wall insulation material used in insulation methods for the outer perimeter of steel-framed buildings, and to a wall insulation structure using the joint member.

[0002] A known wall insulation structure for the exterior of steel-framed buildings involves constructing an interior wall base panel, which integrates a frame and insulation material, within the structural plane of the framing enclosed by the columns and beams of the exterior, or on the indoor side of said structural plane, to form an insulation line. This interior wall base panel is then covered with interior wall finishing materials such as gypsum board or wallpaper. Here, "insulation line" refers to a conceptual boundary line (interface) formed by placing insulating materials on the exterior walls, roof, ceiling, under the floor, etc., to block heat transfer between the inside and outside of the building and maintain a comfortable indoor environment. 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 insulating material made of foamed resin molded products such as polystyrene foam, polyethylene foam, rigid urethane foam, or phenolic foam. The applicant has also proposed and put into practical use a wall insulation structure in which such an interior wall base panel is constructed on the indoor side of the framing, 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 structural frame via metal mounting members. Therefore, even if the interior wall base panels are erected at a slight distance from the structural frame, a thermal bridge is formed via the mounting members connecting the structural frame and the interior wall base panels, which can become a weakness in the insulation design. This concern is particularly greater when lightweight steel sections with high thermal conductivity are used for the frame that makes up the interior wall base panels. In addition, the gaps formed between the structural frame and the interior wall base panels around the installation points of the mounting members themselves tend to become breaks in the insulation line.

[0004] Therefore, the applicant of the present application has commercialized a wall insulation structure in which a board material made of a rigid foamed resin molded body with excellent self - standing properties and easy to obtain uniform heat insulation performance is built into the framework of the wall structure without gaps as a wall insulation material alone. For example, it is disclosed in Patent Document 3 and the like. In that wall insulation structure, the lower edge and the upper edge of the wall insulation material are simply fixed to dedicated metal fittings respectively attached under the foundation and under the beam, thereby holding the wall insulation material in an upright state. Further, the side edges of adjacent wall insulation materials in the lateral direction are held flush and continuously using a joint member having a substantially H - shaped cross - section in plan view, in which the concave groove portions capable of sandwiching the side edges are joined back - to - back. A joint member having a substantially H - shaped cross - section in plan view interposed at an adjacent portion between such board materials is disclosed, for example, in FIG. 6(a) of Patent Document 2, which has a similar shape.

[0005] Japanese Patent Application Laid - Open No. 10 - 266417, Japanese Patent Application Laid - Open No. 10 - 280587, Japanese Patent Application Laid - Open No. 2023 - 108965

[0006] In the above - mentioned wall insulation structure in which board - shaped wall insulation materials are adjacent to each other in the lateral direction along the framework of the structure, first, after fixing the wall insulation material on the side of the first construction, one concave groove portion of a substantially H - shaped joint member is fitted laterally into the side edge thereof, and then the side edge of the wall insulation material on the side of the subsequent construction is inserted laterally into the other concave groove portion of the joint member for positioning. Thus, the wall insulation materials are sequentially built in. That is, since the order of construction and the insertion direction of the wall insulation material and the joint member are defined in one direction, it becomes a chasing construction (one - way construction) either clockwise or counterclockwise, and it is often difficult to insert the last piece into the concave groove of the substantially H - shaped joint member.

[0007] The invention disclosed in the present application is conceived in view of such circumstances. When building a self - standing wall insulation material made of a board material of a foamed resin molded body or the like adjacent to each other along the framework of the building structure, the purpose is to propose a joint member with excellent workability that can easily hold adjacent wall insulation materials regardless of the order of construction, and a wall insulation structure using such a joint member.

[0008] To achieve the aforementioned objective, the present invention discloses a joint member interposed at a location where board-shaped wall insulation materials are installed adjacent to each other, for holding the wall insulation materials flush with each other, and the basic configuration of the joint member comprising: a clamping piece having a depth dimension matching the thickness of the wall insulation material and sandwiched between the side edges of adjacent wall insulation materials; a front fixing portion provided on one side of the clamping piece; a fixed front pressing piece extending out to one side from the front end edge of the clamping piece perpendicular to the clamping piece and facing the front fixing portion; and a movable front pressing piece arranged in substantially the same plane as the fixed front pressing piece and attached so as to be able to move from a position where it does not protrude to the other side of the clamping piece to a position where it protrudes to the other side of the clamping piece.

[0009] In the joint member of the wall insulation material relating to this basic configuration, the pre-fixing portion is preferably composed of a backing piece on the pre-installed side that extends from the rear end edge of the clamping piece perpendicular to the clamping piece and protrudes to one side of the clamping piece.

[0010] Alternatively, the pre-fixing portion may be composed of a puncture piece that protrudes from a suitable intermediate position in the depth direction of the clamping piece, perpendicular to the clamping piece, and to one side of the clamping piece.

[0011] Furthermore, the joint member of the wall insulation material relating to the basic configuration described above may also include a backing piece on the post-installation side that extends from the rear end edge of the clamping piece perpendicularly to the clamping piece and protrudes to the other side of the clamping piece.

[0012] Furthermore, the joint member of the wall insulation material relating to the basic configuration described above can also be configured such that a portion of the movable surface retaining piece overlaps the fixed surface retaining piece, and the overlapping portion is pivotally attached via a single pin joint, thereby allowing the movable surface retaining piece to rotate in substantially the same plane as the fixed surface retaining piece.

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

[0014] Furthermore, the wall insulation structure invention disclosed in this application is characterized in that the aforementioned joint member is interposed at the location where board-shaped wall insulation materials are installed adjacent to each other, thereby holding the wall insulation materials flush with each other.

[0015] By using the joint members configured as described above, when installing board-shaped wall insulation materials made of foamed resin molded bodies adjacent to each other, the adjacent wall insulation materials can be installed from either the left or right, regardless of the order of installation, and can be held in place easily and with precision. This makes it possible to efficiently construct a wall insulation structure with continuous insulation lines without gaps within the structural frame of the outer perimeter of a steel-framed building.

[0016] This is a longitudinal cross-sectional view of the outer perimeter of a steel-framed building to which the invention disclosed in this application is applied. This is a three-view drawing showing the disassembled state of a joint member according to an embodiment of the invention disclosed in this application, where (a) is a front view, (b) is a top view, and (c) is a right side view. This is a three-view drawing showing the connected state of the joint member of Figure 2, where (a) is a front view, (b) is a top view, and (c) is a right side view. These are a front view (a) and a cross-sectional view (b) showing the joint member of Figure 3 interposed in an adjacent location to the wall insulation material. This is a perspective view showing the procedure for interposing the joint member of Figure 3 in an adjacent location to the wall insulation material. This is a perspective view showing another embodiment of the joint member and its interposition procedure.

[0017] Figure 1 shows an overview of a wall insulation structure applied to the outer perimeter of a steel-framed building. This wall insulation structure forms an insulation line between the structural frame 1 and the interior wall substrate 31 by installing board-shaped wall insulation material 2 closer to the interior side within the structural plane of the structural frame 1, which is surrounded by columns (not shown) and beams 11 of the outer perimeter. In Figure 1, reference numeral 4 denotes the exterior wall material, reference numeral 5 denotes the foundation, reference numeral 12 denotes the panel frame assembled within the structural plane of the structural frame 1, reference numeral 32 denotes the floor member of the first floor, reference numeral 33 denotes the ceiling member of the first floor, and reference numeral 34 denotes the floor member of the second floor. In this invention, the "board-shaped wall insulation material" is assumed to be a flat, plate-shaped molded product with a thickness of several centimeters to more than ten centimeters made of foamed resin such as polystyrene foam, polyethylene foam, rigid urethane foam, or phenolic foam, and possessing sufficient rigidity to be self-supporting (not deform irregularly).

[0018] The wall insulation material 2 is installed over approximately the entire length of the beam under the floor on each floor. In the example configuration of the first floor, the lower edge of the wall insulation material 2 is fixed to a position in contact with or close to the top of the foundation 5 via appropriate mounting means, and the upper edge of the wall insulation material 2 is fixed to a position in contact with or close to the underside of the beam 11 via appropriate mounting means. In the invention disclosed herein, the detailed arrangement of the connection between the foundation 5, the beam 11 and the wall insulation material 2 is not particularly limited.

[0019] The essential part of the invention disclosed in this application lies in a joint member interposed at a location where multiple wall insulation materials 2 are installed adjacent to each other in the lateral 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 relationships and directions of operation of each part of the joint member, the viewpoint in Figure 4(a) (a viewpoint directly facing the indoor surface of the wall insulation material 2) as seen from the indoor side of the joint member 6 interposed at an adjacent location of the wall insulation material 2 will be used as the reference point to specify the depth direction (front-to-back direction / front-to-back direction), the lateral direction (left-to-right direction), and the height direction (up-and-down direction).

[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 pre-installed side that extends from the rear end edge (outdoor side edge) of the clamping piece 61 perpendicular to the clamping piece 61 and protrudes to one side of the clamping piece 61; a backing piece 63 on the post-installed side that extends from the rear end edge (outdoor side edge) of the clamping piece 61 perpendicular to the clamping piece 61 and protrudes to the other side of the clamping piece 61; a fixed front retaining piece 64 that extends from the front end edge (indoor side edge) of the clamping piece 61 perpendicular to the clamping piece 61 and protrudes to one side so as to face the backing piece 62 on the pre-installed side; and a movable front retaining piece 65 that is arranged in substantially the same plane as the fixed front retaining piece 64 and is attached so as to be able to move from a position where it does not protrude to the other side of the clamping piece 61 to a position where it protrudes to the other side of the clamping piece 61.

[0021] The joint member 6 shown in the example is integrally processed by cutting and bending thin steel plates or aluminum plates, and the thickness of each part is the same (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 a hard synthetic resin with low thermal conductivity or hard processed paper (fiberboard). In that case, the thickness of each part does not have to be the same.

[0022] The clamping piece 61 is a flat, thin plate in the shape of a roughly elongated rectangle, and its depth dimension (short side dimension in the example embodiment) is formed to match the thickness of the wall insulation material 2. The thickness of adjacent wall insulation materials 2 are basically the same.

[0023] In the exemplary configuration, the backing piece 62 on the pre-installed side is approximately square in front view and protrudes to one side (the left side in Figure 4(a)) from the upper half of the clamping piece 61. This pre-installed backing piece 62 constitutes the "pre-fixing portion provided on one side of the clamping piece" as described in the claims. On the other hand, in the exemplary configuration, the backing piece 63 on the later-installed side is approximately square in front view, similar to the backing piece 62 on the pre-installed side, and protrudes to the other side (the right side in Figure 4(a)) from the lower half of the clamping piece 61, and is positioned on the same plane as the backing piece 62 on the pre-installed side. However, the front shape of both backing pieces 62 and 63, and the dimensions of their protrusions to the left and right, respectively, do not necessarily have to be the same, and the position of the protrusions in the vertical direction is not particularly limited.

[0024] In the example configuration, the fixed front retaining piece 64 is approximately square in shape and the same size as the backing piece 62 on the previously installed side. It protrudes to one side from the upper half of the clamping piece 61 and is positioned to overlap with the backing piece 62 on the previously installed side when viewed from the front. The distance between the fixed front retaining piece 64 and the backing piece 62 on the previously installed side is set to match the thickness of the wall insulation material 2. Note that the front shape and dimensions of this fixed front retaining piece 64 do not need to be the same as the opposing backing piece 62 on the previously installed side.

[0025] In the example configuration, the movable front retaining piece 65 is approximately square in shape and slightly larger than the fixed front retaining piece 64. One corner of the movable front retaining piece 65 overlaps with the corner of the fixed front retaining piece 64 closest to the clamping piece 61 (the lower right corner in the example configuration), and the overlapping portion is pivotally attached via a pin joint 66. For example, a pop rivet (blind rivet) can be used for this pin joint 66. As a result, the movable front retaining piece 65 is held so that it can rotate around the pin joint 66 in approximately the same plane as the fixed front retaining piece 64 with appropriate frictional resistance. Here, the expression "approximately" in the same plane is used to mean that there is a step (plane misalignment) of one plate thickness between the fixed front retaining piece 64 and the movable front retaining piece 65.

[0026] The rotation range of the movable front retaining piece 65 is set to include a position in which it does not extend beyond the clamping piece 61 to the other side (right side) and, in a front view, completely opens the backing piece 63 on the post-installation side (this is called the "open position"), and a position in which it extends beyond the clamping piece 61 to the other side and overlaps the backing piece 63 on the post-installation side in a front view (this is called the "opposing position"). In the example embodiment, in the front view of Figure 4(a), the state in which the movable front retaining piece 65 is to the lower left of the pin joint 66 is the open position, and the state in which it is to the lower right of the pin joint 66 is the opposing position, and it rotates approximately 90 degrees between these two positions. However, there is no particular inconvenience even if the movable front retaining piece 65 rotates beyond 90 degrees, and in the example embodiment, it is possible to rotate 360 ​​degrees.

[0027] When the movable front retaining 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 matches the thickness of the wall insulation material 2, similar to the fixed front retaining piece 64 described above. Therefore, this joint member 6 employs a correction means to compensate for a dimensional difference equivalent to one sheet of sheet thickness. Specifically, the movable front retaining piece 65 is pushed out to the back side by about one sheet of sheet thickness near the diagonal position with the pin node 66 to form a hemispherical bulge 67, and the distance between the back top surface of this bulge 67 and the backing piece 63 on the later-installed side matches the thickness of the wall insulation material 2. Note that multiple such bulges may be formed.

[0028] As an alternative correction method to the stamping deformation, for example, the middle part of the movable front pressing piece 65 may be bent in a mountain-valley shape by the thickness of one sheet of metal so that a part of it is in the same plane as the fixed front pressing piece 64, or a sheet of metal of the same thickness may be attached to an appropriate place 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 retaining piece 65 be held in place so that it does not easily move from its opposing position. Therefore, the joint member 6 is also provided with a temporary fixing means for holding the movable front retaining piece 65 in the opposing position. In the exemplary embodiment, the portion of the movable front retaining piece 65 that interferes with the front end edge of the clamping piece 61 in the opposing position is pushed out on the back side by about the thickness of one plate to form a hemispherical projection 68, and the back top surface of the projection 68 is pressed against the front end edge of the clamping piece 61 to make it difficult to rotate.

[0030] Furthermore, instead of the extrusion deformation shown in the example, this temporary fastening means may be modified by, for example, cutting and raising a claw on the back side of the movable front pressing piece 65 and hooking it onto the front edge of the clamping piece 61, or by forming a projection on the front edge of the clamping piece 61 and hooking it onto the lower edge of the movable front pressing piece 65 in the opposite position. Also, if the movable front pressing piece 65 can be held in the open position by a similar temporary fastening means, the workability when installing the wall insulation material 2B on the later-installed side in the installation procedure described later will be improved.

[0031] Figure 5 shows the procedure for installing the wall insulation material 2 using the joint member 6 configured in this way. First, the lower and upper edges of the wall insulation material 2A on the pre-installed side are fixed to the foundation 5 and beam member 11, respectively, by appropriate means. Then, the groove formed by the backing piece 62, clamping piece 61, and fixed front pressing piece 64 of the joint member 6 on the pre-installed side is fitted from the side of the wall insulation material 2A to an appropriate intermediate position in the height direction of its side edge. Next, the wall insulation material 2B on the later-installed side is installed while supporting the movable front pressing piece 65 in the open position. At this time, since the entire backing piece 63 on the later-installed side is open to the front, the wall insulation material 2B on the later-installed side can be brought adjacent to the wall insulation material 2A on the pre-installed side by pushing it in from the front, rather than from the side as in the conventional method. Once the wall insulation material 2B on the later-installed side is in contact with the backing piece 63 on the later-installed side and positioned, the movable front pressing piece 65 is rotated to the opposing position to press down on the surface of the wall insulation material 2B on the later-installed side, and the lower and upper edges of the wall insulation material 2B are then fixed to the foundation 5 and beam member 11, respectively, by appropriate means. In this way, the surfaces of adjacent wall insulation materials 2A and 2B can be installed with precision. In areas where adjacent wall insulation materials 2A and 2B are to be installed in reverse order from left to right, the joint member 6 can be used in a state where it is rotated 180 degrees in a front view.

[0032] Figure 6 is a perspective view showing another embodiment of the joint member. Parts that have the same function or operation as those in the previously described embodiment are denoted by the same reference numerals. This joint member 60 is formed such 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 pre-installed side in the previously described embodiment, it is equipped with a puncture piece 69 that protrudes from the clamping piece 61 perpendicularly to one side. The puncture piece 69 is positioned set back from the front edge of the clamping piece 61 by about 1 / 2 to 2 / 3 of the thickness of the wall insulation material 2 in the depth direction. In the exemplary embodiment, two notches extending in the depth 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 puncture piece 69 is formed to have a roughly triangular front shape with its tip sharply pointed, and is inserted into the side edge of the wall insulation material 2. This puncture piece 69 constitutes the "pre-fixing portion provided on one side of the clamping piece" as described in the claim.

[0033] Furthermore, the movable front retaining piece 65 in this joint member 60 differs slightly in its front shape from that of the previously described embodiment, and the position of the pin node 66 is also positioned higher than in the previously described embodiment, but the basic structure, function, and manner of rotation are the same as in the previously described embodiment.

[0034] Furthermore, this joint member 60 does not have the backing piece 63 on the post-construction side as in the embodiment described above. This joint member 60 is used in a part where the wall insulation material 2 is erected in a way that prevents it from falling backward, such as by contacting an appropriate support member 13 located at the rear (outdoor side). Examples of such support members 13 include studs, furring strips, braces, etc., installed within the structural plane of the building frame.

[0035] In this case, the wall insulation material 2A on the first-installed side is erected in the predetermined position and fixed by appropriate means. Then, while aligning the fixed surface pressing piece 64 of the joint member 60 along the surface of the wall insulation material 2A, the puncture piece 69 is inserted into an appropriate location in the middle of the height direction of the side edge of the wall insulation material 2A and fixed. The puncture piece 69 has an appropriate visible dimension in the vertical direction and is formed to be parallel to the fixed surface pressing piece 64, so when the puncture piece 69 is inserted into the side edge of the wall insulation material 2A, its movement in the front-to-back direction is restrained. Next, while supporting the movable surface pressing piece 65 in the open position, the wall insulation material 2B on the second-installed side is erected adjacent to it. Since this second-installed wall insulation material 2B is erected in a state where it does not fall backward, by rotating the movable surface pressing piece 65 to press the surface of the second-installed wall insulation material 2B, the surfaces of the adjacent wall insulation materials 2A and 2B can be made flush. The position, number, and frontal shape of the puncture fragments 69 can be changed as appropriate.

[0036] As described above, by using the joint member of the invention disclosed herein, a wall insulation structure with seamlessly continuous insulation lines can be efficiently constructed within the structural frame of the outer perimeter of a steel-framed building. It is efficient because tape or adhesive is not required when temporarily fixing adjacent wall insulation materials together (tape may be used to seal them after installation to ensure airtightness), and a certain level of construction accuracy can be ensured regardless of the worker's skill. Furthermore, even if the structural frame deforms due to earthquakes or vibrations, the wall insulation material can maintain its self-supporting state without being affected. This joint member can be used not only for plates made of foamed resin material, but also for areas where sound-absorbing materials, fire-resistant coatings, interior base materials, etc., formed in a similar board or panel shape are to be installed continuously.

[0037] The technical scope of the invention disclosed herein should not be interpreted restrictively by the exemplary embodiments, but rather conceptually based on the claims. The example of the insulation structure for a steel-framed building is merely an example, and when implementing the invention disclosed herein, the detailed shape, dimensions, structure, material, quantity, combination with other elements, relative positional relationships, etc., of components not specifically identified in the claims can be modified as appropriate, within a range that yields substantially equivalent or better effects than those of the exemplary form.

[0038] The embodiments and other matters disclosed herein can also be understood as the technical concepts described in the following appendix.

[0039] (Note 1) A joint member for wall insulation materials, which is interposed at a location where board-shaped wall insulation materials are installed adjacent to each other to hold the wall insulation materials flush with each other, comprising: a clamping piece having a depth dimension that matches the thickness of the wall insulation material and is sandwiched between the side edges of adjacent wall insulation materials; a front fixing portion provided on one side of the clamping piece; a fixed front pressing piece extending out to one side from the front end edge of the clamping piece perpendicular to the clamping piece and facing the front fixing portion; and a movable front pressing piece arranged in substantially the same plane as the fixed front pressing piece and attached so as to be able to move from a position that does not protrude to the other side of the clamping piece to a position that protrudes to the other side of the clamping piece.

[0040] (Note 2) A joint member for wall insulation material as described in Note 1, characterized in that the pre-fixing portion is composed of a backing piece on the pre-installed side that extends from the rear end edge of the clamping piece perpendicular to the clamping piece and protrudes to one side of the clamping piece.

[0041] (Note 3) A joint member for wall insulation material as described in Note 1, characterized in that the pre-fixing portion is composed of a puncture piece that protrudes from a suitable intermediate position in the depth direction of the clamping piece, perpendicular to the clamping piece, to one side of the clamping piece.

[0042] (Supplementary Note 4) In the joint member of the wall heat insulating material described in any one of Supplementary Notes 1 to 3, a back support piece on the post-construction side that projects from the rear edge of the clamping piece to the other side of the clamping piece at right angles to the clamping piece is provided. A joint member for a wall heat insulating material, characterized by this.

[0043] (Supplementary Note 5) In the joint member of the wall heat insulating material described in any one of Supplementary Notes 1 to 4, a part of the movable front pressing piece is overlapped with the fixed front pressing piece, and the overlapping part is axially attached through a single pin joint, so that the movable front pressing piece is configured to be able to rotate in substantially the same plane as the fixed front pressing piece. A joint member for a wall heat insulating material, characterized by this.

[0044] (Supplementary Note 6) In the joint member of the wall heat insulating material described in Supplementary Note 5, a temporary fixing means for fixing the movable front pressing piece at a position projecting to the other side of the clamping piece is provided at an interference portion between the movable front pressing piece and the clamping piece or the fixed front pressing piece. A joint member for a wall heat insulating material, characterized by this.

[0045] (Supplementary Note 7) At a location where board-shaped wall heat insulating materials are built adjacent to each other, a joint member of the wall heat insulating material described in any one of Supplementary Notes 1 to 6 is interposed, whereby the wall heat insulating materials are held flush with each other. A wall heat insulating structure, characterized by this.

[0046] 1 Frame of the building body 11 Beam material 12 Panel frame 13 Support member 2, 2A, 2B Wall heat insulating material 31 Inner wall base 32 First floor member 33 First floor ceiling member 34 Second floor member 4 Outer wall material 5 Foundation 6, 60 Joint member 61 Clamping piece 62 Back support piece on one side (left side) 63 Back support piece on the other side (right side) 64 Fixed front pressing piece 65 Movable front pressing piece 66 Pin joint 67 Bulging portion 68 Protrusion 69 Piercing piece

Claims

1. A joint member for wall insulation materials, which is interposed at a location where board-shaped wall insulation materials are installed adjacent to each other to hold the wall insulation materials flush with each other, comprising: a clamping piece having a depth dimension that matches the thickness of the wall insulation material and is sandwiched between the side edges of adjacent wall insulation materials; a front fixing portion provided on one side of the clamping piece; a fixed front pressing piece extending to one side from the front end edge of the clamping piece perpendicular to the clamping piece and facing the front fixing portion; and a movable front pressing piece arranged in substantially the same plane as the fixed front pressing piece and attached so as to be able to move from a position that does not protrude to the other side of the clamping piece to a position that protrudes to the other side of the clamping piece.

2. A joint member for wall insulation material according to claim 1, characterized in that the pre-fixing portion is composed of a backing piece on the pre-installed side that extends from the rear end edge of the clamping piece perpendicular to the clamping piece and protrudes to one side of the clamping piece.

3. A joint member for wall insulation material according to claim 1, characterized in that the pre-fixing portion is composed of a puncture piece that protrudes from a suitable intermediate position in the depth direction of the clamping piece, perpendicular to the clamping piece, to one side of the clamping piece.

4. A joint member for wall insulation material as described in claim 1, characterized in that it comprises a backing piece for the post-installation side that extends from the rear end edge of the clamping piece perpendicular to the clamping piece and protrudes to the other side of the clamping piece.

5. A joint member for wall insulation material as described in claim 1, characterized in that a portion of the movable surface retaining piece is superimposed on the fixed surface retaining piece, and the overlapping portion is pivotally attached via a single pin joint, thereby enabling the movable surface retaining piece to rotate in substantially the same plane as the fixed surface retaining piece.

6. A joint member for wall insulation material as described in claim 5, characterized in that a temporary fixing means for fixing the movable front retaining piece to a position that protrudes to the other side of the clamping piece is provided at the point of interference between the movable front retaining piece and the clamping piece or the fixed front retaining piece.

7. A wall insulation structure characterized in that a joint member for wall insulation material described in any one of claims 1 to 6 is interposed at the location where board-shaped wall insulation material is installed adjacent to each other, thereby holding the wall insulation material flush with each other.

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