ty Thermal insulation renovation structure and thermal insulation renovation method

Abstract

To provide a heat insulation repair structure and a heat insulation repair method allowing an attachment state of a heat insulation repair part to an existing outer wall to be made a proper one.SOLUTION: A heat insulation repair part 50 is provided with: new heat insulation material 51 placed outside of an existing outer wall 10; new furring strips 52 placed outside of the new heat insulation material 51; new substrate material 53 arranged between an outer wall panel 18 and the new heat insulation material 51 and placed opposite to outside substrate material 15 through the outer wall panel 18 in an inside-to-outside direction; and fixtures to fix the heat insulation repair part 50 on the existing outer wall 10. The fixture includes a substrate fixture 54 inserted into the outside substrate material 15 from the outside of the new substrate material 53, and a heat insulation fixture 55 inserted into the new substrate material 53 through the new insulation material 51 from the outside of the new furring strip 52.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to a heat insulation renovation structure and a heat insulation renovation method including an existing outer wall of a building and a heat insulation renovation part.

Background Art

[0002] Conventionally, technologies for a heat insulation renovation structure and a heat insulation renovation method including an existing outer wall of a building and a heat insulation renovation part are known. For example, it is as described in Patent Document 1.

[0003] In Patent Document 1, a heat insulation renovation structure is disclosed in which a new heat insulating material (heat insulation renovation part) is attached to an existing outer wall having a floor slab (existing base material) and a mortar layer disposed on the outdoor side of the floor slab. In this heat insulation renovation structure, an anchor pin (fastening tool) is inserted from the outdoor side of the new heat insulating material through the mortar layer to the floor slab, thereby fixing the new heat insulating material to the existing outer wall.

[0004] However, since the existing base material of the existing outer wall cannot be visually recognized from the outdoor side, when an operator inserts the fastening tool, the fastening tool may be inserted into a location deviated from the target insertion location such as the existing base material. Particularly, when the existing outer wall is an outer wall composed of a steel column or the like, since the target insertion location (existing base or the like) is in a limited range, the fastening tool is likely to be inserted into a location unintended by the operator. Thus, when the fastening tool is inserted into an unintended location, the attachment state of the new heat insulating material (heat insulation renovation part) to the existing outer wall becomes unstable, which is not desirable.

Prior Art Documents

Patent Documents

[0005]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0006] This invention was made in view of the above circumstances, and the problem it aims to solve is to provide an insulation renovation structure and insulation renovation method that can provide a suitable attachment state for the insulation renovation section to the existing exterior wall. [Means for solving the problem]

[0007] The problems that this invention aims to solve are as described above, and the means for solving these problems will now be explained.

[0008] That is, claim 1 provides an insulation renovation structure comprising an existing exterior wall of a building and an insulation renovation section attached to the existing exterior wall, wherein the existing exterior wall comprises an existing frame section arranged on both sides of the existing steel columns of the building and on which existing insulation material is arranged, an existing exterior wall surface material arranged on the outdoor side of the existing frame section, and an existing base material arranged between the existing frame section and the existing exterior wall surface material, and the insulation renovation section comprises a new insulation material arranged on the outdoor side of the existing exterior wall, a new furring strip arranged on the outdoor side of the new insulation material, a new base material provided between the existing exterior wall surface material and the new insulation material and arranged opposite to the existing base material in the indoor-outdoor direction via the existing exterior wall surface material, and a fastener for fixing the insulation renovation section to the existing exterior wall, wherein the fastener includes a first fastener inserted from the outdoor side of the new base material into the existing base material, and a second fastener inserted from the outdoor side of the new furring strip into the new base material via the new insulation material.

[0009] In claim 2, the new base material is formed in the shape of a flat plate.

[0010] In claim 3, the existing exterior wall surface material constitutes a corner of the existing exterior wall, and the new base material is formed in a shape that is bent to conform to the existing exterior wall surface material that constitutes the corner.

[0011] In claim 4, the new insulation material and the new furring strip include two separate parts that correspond to two parts of the existing exterior wall material facing in different directions at the corner, and the relationship between the superior and inferior fit of the two parts of the new insulation material and the superior and inferior fit of the two parts of the new furring strip is opposite to that of the other.

[0012] In claim 5, the corner portion is either an inward corner or an outward corner.

[0013] Claim 6 provides a method for installing an insulation renovation section on an existing exterior wall of a building, which has an existing frame section arranged on both sides of an existing steel column of the building and on which existing insulation material is placed; an existing exterior wall surface material arranged on the outdoor side of the existing frame section; and an existing base material arranged between the existing frame section and the existing exterior wall surface material, comprising: a new base material placement step of placing a new base material on the outdoor side of the existing exterior wall surface material, facing the existing base material in the indoor-outdoor direction via the existing exterior wall surface material; a first fastener insertion step of inserting a first fastener into the existing base material from the outdoor side of the new base material; a new insulation material placement step of placing new insulation material on the outdoor side of the existing exterior wall; a new furring strip placement step of placing new furring strips on the outdoor side of the new insulation material; and a second fastener insertion step of inserting a second fastener into the new base material via the new insulation material from the outdoor side of the new furring strips. [Effects of the Invention]

[0014] The present invention provides the following effects:

[0015] The present invention offers the advantage of being able to achieve a suitable mounting condition to the existing exterior wall around the insulated floor. [Brief explanation of the drawing]

[0016] [Figure 1] A schematic plan and cross-sectional view showing a thermal insulation repair structure for an inner corner according to one embodiment of the present invention. [Figure 2]Similarly, a plan sectional decomposition schematic diagram. [Figure 3] A plan sectional schematic diagram showing the structure of the inner corner of an existing outer wall. [Figure 4] A plan sectional schematic diagram showing the conventional heat insulation repair structure of the inner corner when the screw insertion is successful. [Figure 5] A plan sectional schematic diagram showing the conventional heat insulation repair structure of the inner corner when the screw insertion fails. [Figure 6] A flowchart showing the heat insulation repair method according to an embodiment of the present invention. [Figure 7] A plan sectional schematic diagram showing the heat insulation repair structure of the outer corner according to another embodiment of the present invention. [Figure 8] Similarly, a plan sectional decomposition schematic diagram. [Figure 9] A plan sectional schematic diagram showing the structure of the outer corner of an existing outer wall.

Mode for Carrying Out the Invention

[0017] Hereinafter, the heat insulation repair structure according to an embodiment of the present invention will be described. Also, hereinafter, based on the arrows in the drawings, the front-rear direction and the left-right direction will be defined for the description.

[0018] The heat insulation repair structure is the structure of the part where the heat insulation repair is performed. Here, the heat insulation repair is a repair (reform) performed to improve the heat insulation performance of an existing building. In this embodiment, it is assumed that heat insulation repair has been performed on an existing building, for example, a detached house with a lightweight steel frame structure (hereinafter simply referred to as "house").

[0019] The places where heat insulation repair is performed in a house include various places such as inner walls partitioning adjacent spaces (rooms), outer walls partitioning the outdoor space, the floor part, the ceiling part, etc. The heat insulation repair structure according to this embodiment refers to the heat insulation repair structure performed at the corner of the outer wall among the various places. First, hereinafter, using FIG. 3, the structure of the inner corner 10a of the outer wall of the house (hereinafter referred to as "existing outer wall 10") that is the object of heat insulation repair will be described.

[0020] Figure 3 is a schematic plan view showing the structure of the inner corner 10a of the existing exterior wall 10. The inner corner 10a is formed to be convex in the indoor direction (to the right rear in this embodiment) when viewed from above. The inner corner 10a comprises a steel column 11, a panel frame 12, vertical battens 13, an indoor base material 14, an outdoor base material 15, a wall panel 16, insulation material 17, and an exterior wall panel 18.

[0021] The steel column 11 is a column made of metal. The steel column 11 is formed by joining two frame-shaped members that extend vertically. In a plan view, the steel column 11 has a roughly rectangular outer shape with its right side and rear side open, and is formed in a hollow manner.

[0022] The panel frame 12 is a rectangular metal frame. The panel frame 12 is made of, for example, thin steel. The panel frame 12 includes a first panel frame 121 and a second panel frame 122. The first panel frame 121 is positioned in front of the steel column 11. The rear side of the first panel frame 121 is fixed to the front side of the steel column 11 using bolts. The second panel frame 122 is positioned to the left of the steel column 11. The right side of the second panel frame 122 is fixed to the left side of the steel column 11 using bolts.

[0023] Thus, the first panel frame 121 and the second panel frame 122 are formed to extend forward and to the left, centered on the steel column 11, in a plan view. The angle on the outdoor side between the first panel frame 121 and the second panel frame 122 (i.e., the angle of the inner corner 10a) is formed to be 90 degrees in a plan view.

[0024] The vertical bars 13 are wooden members formed to extend vertically. Two vertical bars 13 are provided near the steel columns 11. The vertical bars 13 are fixed to the rear end of the right side of the first panel frame 121 and to the right end of the rear side of the second panel frame 122, respectively.

[0025] The indoor base material 14 is a wooden plywood placed near the wall panel material 16, which will be described later. The indoor base material 14 is formed in a board shape with the board surface facing inwards in a plan view. Two outdoor base materials 15 are provided near the steel column 11, corresponding to the right and rear sides of the steel column 11.

[0026] The outdoor base material 15 is a wooden plywood placed near the exterior wall panel 18, which will be described later. The outdoor base material 15 is formed in a board shape with the board surface facing in the indoor / outdoor direction in a plan view. Two outdoor base materials 15 are provided near the steel column 11 to correspond to the first panel frame 121 and the second panel frame 122. Hereafter, the outdoor base material 15 corresponding to the first panel frame 121 will be referred to as "first outdoor base material 151," and the outdoor base material 15 corresponding to the second panel frame 122 will be referred to as "second outdoor base material 152."

[0027] The first outdoor base material 151 is positioned so as to abut against the rear end of the left side of the first panel frame 121 and is fixed using screws or the like. The second outdoor base material 152 is positioned so as to abut against the right end of the front side of the second panel frame 122 and is fixed using screws or the like.

[0028] The wall panel 16 is a flat, plate-shaped member that is exposed to the interior (room). Wallpaper is applied to the interior side of the wall panel 16. The wall panel 16 is installed with its surface facing in the in-interior / out-of-interior direction and is fixed to the vertical battens 13 and the interior base material 14 using screws or the like.

[0029] The insulation material 17 is a component that has thermal insulation properties. The insulation material 17 is made of, for example, glass wool. The insulation material 17 is installed inside the panel frame 12 and the steel column 11.

[0030] The exterior wall panel 18 is a flat plate-shaped member that is exposed to the outdoors. The exterior wall panel 18 is formed with its surface facing in the direction of indoors or outdoors in a plan view. The exterior wall panel 18 is provided to have two faces (orientations) corresponding to the first panel frame 121 and the second panel frame 122. Hereinafter, the exterior wall panel 18 corresponding to the first panel frame 121 will be referred to as the "first exterior wall panel 181," and the exterior wall panel 18 corresponding to the second panel frame 122 will be referred to as the "second exterior wall panel 182."

[0031] The rear end of the first exterior wall panel 181 is positioned to abut against approximately the entirety of the first outdoor base material 151, facing each other. The first exterior wall panel 181 is fixed to the first outdoor base material 151 using screws or the like. The right end of the second exterior wall panel 182 is positioned to abut against approximately the entirety of the second outdoor base material 152, facing each other. The second exterior wall panel 182 is fixed to the second outdoor base material 152 using screws or the like.

[0032] When the existing exterior wall 10 (inner corner 10a) configured as described above is subjected to insulation improvements, the insulation improvement section 50, which includes the new insulation material 51 described later, is attached to the existing exterior wall 10 (added on). This improves the insulation performance of the exterior wall portion of the house.

[0033] Here, the inner corner 10a of the existing exterior wall 10 is a relatively difficult place for workers to perform insulation repairs. In other words, when insulation repairs are performed on the existing exterior wall 10, workers need to fix the insulation repair section 50 to the existing exterior wall 10 from the outside using screws. However, when workers insert screws, there is a possibility that the screws may be accidentally inserted in a location that is not connected to the exterior base material 15.

[0034] To explain in more detail, for example, Figure 4 shows a conventional insulation repair structure for the inner corner 10a (when the screw insertion is successful). In this conventional insulation repair structure for the inner corner 10a, a screw is inserted from the new furring strip exposed to the outside, through the new insulation material, to the outdoor-side base material 15 inside the inner corner 10a, thereby attaching the insulation repair section to the existing exterior wall 10.

[0035] However, as mentioned above, the outdoor base material 15 of the existing exterior wall 10 is not visible from the outside, and the screws need to be inserted in a direction that is inclined toward the exterior wall panel 18. Therefore, when a worker inserts a screw, as shown in Figure 5, the screw may be mistakenly inserted in a location other than the outdoor base material 15. In particular, in light steel frame houses, the existing exterior wall 10 is made up of steel columns 11, etc. (i.e., there are many metal members), so the target insertion location (outdoor base material 15) is limited to a specific range, and the screw is easily inserted in a location unintended by the worker. Thus, as shown in Figure 5, if the screw is not inserted into the outdoor base material 15, the attachment of the insulation renovation section 50 to the existing exterior wall 10 becomes unstable, which is undesirable.

[0036] In contrast, in the thermal insulation renovation structure for an inner corner 10a according to one embodiment of the present invention, by using a new base material 53 described later, when the thermal insulation renovation section 50 including the new insulation material 51 described later is attached to the existing exterior wall 10, the screws are prevented from being inserted into the outdoor base material 15.

[0037] The following describes the thermal insulation renovation structure of the inner corner 10a (i.e., the structure of the thermal insulation renovation section 50 attached to the inner corner 10a) using Figures 1 and 2. The thermal insulation renovation section 50 comprises new insulation material 51, new furring strips 52, new base material 53, base fasteners 54, and insulation material fasteners 55.

[0038] The new insulation material 51 is a component that has thermal insulation properties. The new insulation material 51 is placed on the exterior side of the exterior wall panel 18. The new insulation material 51 is constructed in a plate shape, for example, using glass wool board. In a plan view, the new insulation material 51 is formed with the plate surface facing in the indoor / outdoor direction. The new insulation material 51 can be divided into two parts corresponding to the first exterior wall panel 181 and the second exterior wall panel 182. Hereinafter, the part of the new insulation material 51 corresponding to the first exterior wall panel 181 will be referred to as the "first new insulation material 511," and the part of the new insulation material 51 corresponding to the second exterior wall panel 182 will be referred to as the "second new insulation material 512."

[0039] The first new insulation material 511 is positioned opposite the first exterior wall panel 181 in the panel surface direction and is formed to abut almost seamlessly via the new base material 53, which will be described later. The second new insulation material 512 is positioned opposite the second exterior wall panel 182 in the panel surface direction and is formed to abut almost seamlessly via the new base material 53, which will be described later.

[0040] The rear surface of the first new insulation material 511 is formed to abut against the right end of the front surface of the second new insulation material 512. Also, the right side of the second new insulation material 512 is formed to abut against the first exterior wall panel 181. In this way, the arrangement of the first new insulation material 511 and the second new insulation material 512 is formed so that the second new insulation material 512 is superior to the first new insulation material 511.

[0041] The new furring strips 52 are wooden members formed to extend vertically. The new furring strips 52 are positioned on the outdoor side of the new insulation material 51. The new furring strips 52 are formed in a flat plate shape with the board surface facing in the indoor / outdoor direction in a plan view. Two new furring strips 52 are provided, corresponding to the first new insulation material 511 and the second new insulation material 512. Hereafter, the new furring strip 52 corresponding to the first new insulation material 511 will be referred to as the "first new furring strip 521," and the new furring strip 52 corresponding to the second new insulation material 512 will be referred to as the "second new furring strip 522."

[0042] The first new furring strip 521 is formed to face and abut against the first new insulation material 511 in the board surface direction. The second new furring strip 522 is formed to face and abut against the second new insulation material 512 in the board surface direction. Furthermore, the rear side surface of the first new furring strip 521 is formed to abut against the second new insulation material 512. Also, the right side surface of the second new furring strip 522 is formed to abut against the rear end of the left side surface of the first new furring strip 521. In this way, the fitting of the first new furring strip 521 and the second new furring strip 522 is formed so that the first new furring strip 521 is superior to the second new furring strip 522.

[0043] In this way, the superiority or inferiority of the fit of the first new furring strip 521 and the second new furring strip 522 is configured such that the superiority or inferiority of the fit of the first new insulation material 511 and the second new insulation material 512 is reversed. According to this, even if an excessive load is applied to the new base material 53 (especially the tip portions of the first part 531 and the second part 532 of the new base material, which will be described later), deformation of the new base material 53 can be suppressed.

[0044] The new base material 53 is a flat metal plate-shaped member placed between the exterior wall panel 18 and the new insulation material 51. The new base material 53 is formed to a thickness of approximately 2 mm. The new base material 53 is formed in a curved shape (specifically, L-shaped) when viewed from above. The new base material 53 has a portion that extends forward from the curved portion (center) when viewed from above, and a portion that extends to the left. Hereinafter, the portion that extends forward will be referred to as the "first portion 531 of the new base material," and the portion that extends to the left will be referred to as the "second portion 532 of the new base material."

[0045] The first portion 531 of the new base material is positioned between the first new insulation material 511 and the second new insulation material 512 and the first exterior wall panel 181, and is in contact with them. Furthermore, the portion of the first portion 531 of the new base material that is close to the center in a plan view (the base end of the first portion 531 of the new base material) is provided so as to face the first outdoor base material 151 of the existing exterior wall 10 via the first exterior wall panel 181. In other words, the base end of the first portion 531 of the new base material is provided so as to overlap with the first outdoor base material 151 in the indoor-outdoor direction (left-right direction).

[0046] In contrast, the portion of the first part 531 of the new base material that is farther from the center in a plan view (the tip of the first part 531 of the new base material) is provided so as not to overlap with the first outdoor base material 151 in the indoor-outdoor direction (left-right direction).

[0047] The second portion 532 of the new base material is positioned between the second new insulation material 512 and the second exterior wall panel 182, and is in contact with them. Furthermore, the portion of the second portion 532 of the new base material that is closer to the center in a plan view (the base end of the second portion 532 of the new base material) is provided so as to face the second outdoor base material 152 of the existing exterior wall 10 via the second exterior wall panel 182. In other words, the base end of the second portion 532 of the new base material is provided so as to overlap with the second outdoor base material 152 in the indoor-outdoor direction (front-to-back direction).

[0048] In contrast, the portion of the second part 532 of the new base material that is farther from the center in a plan view (the tip of the second part 532 of the new base material) is provided so as not to overlap with the second outdoor base material 152 in the indoor / outdoor direction (front-to-back direction).

[0049] The base fasteners 54 are mainly screws, nails, and other components used to fix the new base material 53 to the existing exterior wall 10. The base fasteners 54 are inserted into the interior of the existing exterior wall 10 via the exterior wall panel 18, from the exterior side of the new base material 53 toward the interior. The base fasteners 54 are inserted from the first portion 531 and the second portion 532 of the new base material 53, respectively. Hereinafter, the base fastener 54 inserted from the first portion 531 of the new base material will be referred to as the "first base fastener 541," and the base fastener 54 inserted from the second portion 532 of the new base material will be referred to as the "second base fastener 542."

[0050] The first base fastener 541 is inserted from the base end of the first portion 531 of the new base material toward the interior (right). In this way, the first base fastener 541 is inserted so as to penetrate the first exterior base material 151 of the existing exterior wall 10. The second base fastener 542 is inserted from the base end of the second portion 532 of the new base material toward the interior (rear). In this way, the second base fastener 542 is inserted so as to penetrate the second exterior base material 152 of the existing exterior wall 10.

[0051] The insulation fasteners 55 are mainly screws, nails, and other components used to fix the new insulation material 51 to the new base material 53. The insulation fasteners 55 are inserted from the outdoor side of the new furring strips 52 toward the indoor side, through the new insulation material 51 to the new base material 53. The insulation fasteners 55 are inserted from the first new furring strip 521 and the second new furring strip 522, respectively. Hereinafter, the insulation fastener 55 inserted from the first new furring strip 521 will be referred to as the "first insulation fastener 551," and the insulation fastener 55 inserted from the second new furring strip 522 will be referred to as the "second insulation fastener 552."

[0052] The first insulation fastener 551 is inserted from the first new furring strip 521 toward the interior (right). The first insulation fastener 551 is inserted through the first new insulation material 511 and through the tip of the first part 531 of the new base material. The first insulation fastener 551 is also inserted through the first exterior wall panel 181 and further reaches the inside of the first panel frame 121. The second insulation fastener 552 is inserted from the second new furring strip 522 toward the interior (rear). The second insulation fastener 552 is inserted through the second new insulation material 512 and through the tip of the second part 532 of the new base material. The second insulation fastener 552 is also inserted through the second exterior wall panel 182 and further reaches the inside of the second panel frame 122.

[0053] With this type of insulation renovation structure for the inner corner 10a, unlike the conventional insulation renovation structure for the inner corner 10a shown in Figure 4, for example, not only the outdoor-side base material 15 but also a relatively large base material (new base material 53) on the outdoor side of the exterior wall panel 18 is used. This makes it easier to reach the base material fasteners 54 and insulation material fasteners 55 to the base material (new base material 53 and outdoor-side base material 15). As a result, the attachment state of the insulation renovation section 50 to the existing exterior wall 10 can be made more favorable.

[0054] Furthermore, the new base material 53 is attached to the outdoor base material 15 by base material fasteners 54 (first base material fastener 541 and second base material fastener 542) inserted in two mutually perpendicular directions. In addition, the new furring strips 52 and the new insulation material 51 are attached to the new base material 53 by insulation material fasteners 55 (first insulation material fastener 551 and second insulation material fastener 552) inserted in two mutually perpendicular directions. This allows the new insulation material 51 to be firmly fixed to the new base material 53 (and consequently to the existing exterior wall 10).

[0055] The following describes how to install the thermal insulation repair section 50 in the corner section 10a (hereinafter referred to as the "thermal insulation repair method") using the flowcharts in Figures 1, 2, and 6.

[0056] First, in the new base material placement step shown in step S11, the new base material 53 is positioned so as to abut the exterior wall panel 18 of the existing exterior wall 10 from the outside. In this case, a portion of the new base material 53 is positioned so as to face the exterior-side base material 15 inside the existing exterior wall 10 in the indoor-outdoor direction via the exterior wall panel 18.

[0057] Next, in the first fastener insertion step shown in step S12, the base fastener 54 is inserted from the outdoor side of the new base material 53 into the outdoor base material 15. In this case, the first base fastener 541 and the second base fastener 542 of the base fastener 54 are inserted in two directions that are perpendicular to each other.

[0058] Next, in the new insulation material placement process shown in step S13, the new insulation material 51 is placed so that it abuts against the exterior wall panel 18 of the existing exterior wall 10 from the outside side via the new base material 53. In this case, the new insulation material 51 (first new insulation material 511 and second new insulation material 512) is arranged such that the second new insulation material 512 is positioned above the first new insulation material 511.

[0059] Next, in the new furring strip placement process shown in step S14, the new furring strips 52 are positioned so that they abut the new insulation material 51 from the outside. In this case, the new furring strips 52 (first new furring strip 521 and second new furring strip 522) are positioned such that the first new furring strip 521 is positioned over the second new furring strip 522.

[0060] Next, in the second fastener insertion step shown in step S15, the insulation fastener 55 is inserted into the new base material 53 via the new insulation material 51, from the outdoor side of the new furring strip 52 toward the indoor side. In this case, the first insulation fastener 551 and the second insulation fastener 552 of the insulation fastener 55 are inserted in two directions that are perpendicular to each other.

[0061] With this insulation renovation method, the insulation renovation section 50 is attached to the inner corner section 10a. In this way, when the worker inserts the base fastener 54 and the insulation material fastener 55, unlike the conventional insulation renovation structure of the inner corner section 10a shown in Figure 4, for example, the base fastener 54 and the insulation material fastener 55 are inserted perpendicular to the exterior wall panel 18. This makes the worker's work easier and makes it easier to reach the base fastener 54 and the insulation material fastener 55 with the base material (new base material 53 and outdoor base material 15).

[0062] Furthermore, since a relatively large base material (new base material 53) is used in addition to the outdoor base material 15, the base fasteners 54 and insulation fasteners 55 can be easily brought into contact with the base material (new base material 53 and outdoor base material 15). In this way, the above-described insulation renovation method makes it possible to achieve a favorable attachment state of the insulation renovation section 50 to the existing exterior wall 10.

[0063] In the following, as another embodiment of the present invention, a thermal insulation renovation structure for the corner portion 20a of an existing exterior wall 20 will be described.

[0064] First, using Figure 9, we will explain the structure of the outer corner 20a of the existing exterior wall 20 that was the subject of the insulation renovation. Note that the outer corner 20a differs from the inner corner 10a in that it is formed to protrude outwards in a plan view. In other words, the structure of the outer corner 20a is generally similar to that of the inner corner 10a, except for the difference in the point and direction of the protrusion, so we will omit a detailed explanation below by showing the relationship with the member described for the inner corner 10a.

[0065] In other words, as shown in Figure 9, the corner section 20a comprises a steel column 21, a panel frame 22 (first panel frame 221 and second panel frame 222), vertical battens 23, outdoor base material 25 (first outdoor base material 251 and second outdoor base material 252), wall board material 26, insulation material 27, and exterior wall panels 28 (first exterior wall panel 181 and second exterior wall panel 182).

[0066] The steel columns 21, panel frames 22 (first panel frame 221 and second panel frame 222), vertical battens 23, outdoor base materials 25 (first outdoor base material 251 and second outdoor base material 252), wall boards 26, insulation material 27, and exterior wall panels 28 (first exterior wall panel 281 and second exterior wall panel 282) correspond to the steel columns 11, panel frames 12 (first panel frame 121 and second panel frame 122), vertical battens 13, outdoor base materials 15 (first outdoor base material 151 and second outdoor base material 152), wall boards 16, insulation material 17, and exterior wall panels 18 (first exterior wall panel 181 and second exterior wall panel 182) of the inner corner 10a, respectively.

[0067] Next, using Figures 7 and 8, we will explain the thermal insulation renovation structure of the outer corner 20a of the existing exterior wall 20 (i.e., the structure of the thermal insulation renovation section 60 attached to the outer corner 20a). Since the structure of the thermal insulation renovation section 60 of the outer corner 20a is generally similar to the structure of the thermal insulation renovation section 50 of the inner corner 10a, we will omit a detailed explanation below by showing the relationship with the components described for the thermal insulation renovation section 50.

[0068] In other words, as shown in Figures 7 and 8, the insulation renovation section 60 comprises new insulation material 61 (first new insulation material 611 and second new insulation material 612), new furring strips 62 (first new furring strips 621 and second new furring strips 622), new base material 63 (first part of new base material 631 and second part of new base material 632), base fasteners 64 (first base fastener 641 and second base fastener 642), and insulation material fasteners 65 (first insulation material fastener 651 and second insulation material fastener 652).

[0069] New insulation material 61 (first new insulation material 611 and second new insulation material 612), new furring strips 62 (first new furring strips 621 and second new furring strips 622), new base material 63 (first part of new base material 631 and second part of new base material 632), base fasteners 64 (first base fasteners 641 and second base fasteners 642), and insulation material fasteners 65 (first insulation material fasteners 651 and second insulation material fasteners 652) are used for insulation renovation. This corresponds to the new insulation material 61 (first new insulation material 511 and second new insulation material 512) of part 50, new furring strips 52 (first new furring strips 521 and second new furring strips 522), new base material 53 (first part of new base material 531 and second part of new base material 532), base fasteners 54 (first base fastener 541 and second base fastener 542), and insulation material fasteners 55 (first insulation material fastener 551 and second insulation material fastener 552).

[0070] Note that, unlike the insulation renovation section 50, the new insulation material 61 (first new insulation material 611 and second new insulation material 612) and new furring strips 62 (first new furring strips 621 and second new furring strips 622) of the insulation renovation section 60 shown in Figure 7 do not have the opposite relationship in terms of the relative positions of the materials in terms of their fit, but they can be configured to be reversed. Although a detailed explanation is omitted, the method for attaching the insulation renovation section 60 to the outer corner 20a (insulation renovation method) is the same as the method for attaching the insulation renovation section 50 to the inner corner 10a (insulation renovation method) (see Figure 6).

[0071] As described above, in the thermal insulation renovation structure according to one embodiment of the present invention, An insulation renovation structure comprising existing exterior walls 10 and 20 of a building and insulation renovation sections 50 and 60 attached to the existing exterior walls 10 and 20, The aforementioned existing exterior walls 10 and 20 are Panel frames 12 and 22 (existing frame sections) are arranged on both sides of the steel columns 11 and 21 (existing steel columns) of the aforementioned building, and insulation material 17 (existing insulation material) is placed on them, The exterior wall panels 18 and 28 (existing exterior wall surface material) are arranged on the outdoor side of the aforementioned panel frames 12 and 22 (existing frame portion), The outdoor base material 15-25 (existing base material) is positioned between the panel frame 12-22 (existing frame portion) and the exterior wall panel 18-28 (existing exterior wall surface material), It has, The aforementioned insulation modification sections 50 and 60 are The new insulation materials 51 and 61 (new insulation materials) are to be placed on the outdoor side of the existing exterior walls 10 and 20, The new furring strips 52 and 62 (new furring strips) are arranged on the outdoor side of the new insulation material 51 and 61 (new insulation material), The new base materials 53 and 63 are provided between the exterior wall panels 18 and 28 (existing exterior wall surface material) and the new insulation material 51 and 61 (new insulation material), and are positioned opposite the exterior base materials 15 and 25 (existing base materials) in the indoor-outdoor direction via the exterior wall panels 18 and 28 (existing exterior wall surface material), Fixing devices for fixing the aforementioned insulation renovation sections 50 and 60 to the existing exterior walls 10 and 20, It is equipped with, The aforementioned fixing device is The base fasteners 54-64 (first fasteners) are inserted from the outdoor side of the new base material 53-63 (new base material) into the outdoor base material 15-25 (existing base material), The insulation fasteners 55 and 65 (second fasteners) are inserted from the outdoor side of the new furring strips 52 and 62 (new furring strips) through the new insulation material 51 and 61 (new insulation material) into the new base material 53 and 63 (new base material), It includes.

[0072] This configuration allows for a favorable attachment of the insulation renovation sections 50 and 60 to the existing exterior walls 10 and 20.

[0073] Furthermore, in insulation renovation structures, The aforementioned new base materials 53 and 63 (new base materials) are formed in a flat plate shape.

[0074] This configuration allows for a relatively small gap between the existing exterior walls 10 and 20 and the new insulation materials 51 and 61 (new insulation materials) in the areas where the new base materials 53 and 63 (new base materials) are not interposed. This makes it possible to achieve a favorable attachment state of the insulation renovation sections 50 and 60 to the existing exterior walls 10 and 20.

[0075] Furthermore, in insulation renovation structures, The aforementioned exterior wall panels 18 and 28 (existing exterior wall surface material) constitute the corners of the existing exterior walls 10 and 20. The new base materials 53 and 63 (new base materials) are formed in a shape that is bent to conform to the exterior wall panels 18 and 28 (existing exterior wall surface materials) that constitute the corner.

[0076] With this configuration, when attaching the insulation renovation sections 50 and 60 to the existing exterior walls 10 and 20, the first base fastener 541 and the second base fastener 542 of the base fastener 54, and the first insulation material fastener 551 and the second insulation material fastener 552 of the insulation material fastener 55, can be inserted in two directions that intersect each other in a plan view. This makes it possible to achieve a suitable attachment state of the insulation renovation sections 50 and 60 to the existing exterior walls 10 and 20.

[0077] Furthermore, in insulation renovation structures, The aforementioned new insulation material 51 (new insulation material) and the aforementioned new furring strip 52 (new furring strip) are, The aforementioned corner includes two separate parts that correspond to two parts of the exterior wall panel 18 (existing exterior wall surface material) that face in different directions, The relationship between the superior and inferior fit of the two parts of the new insulation material 51 (new insulation material) (first new insulation material 511 and second new insulation material 512) and the superior and inferior fit of the two parts of the new furring strip 52 (new furring strip) (first new furring strip 521 and second new furring strip 522) is configured to be opposite to that of the other.

[0078] This configuration prevents deformation of the new base material 53 (especially the tip portions of the first and second parts of the new base material 531 and 532) even when excessive load is applied to it. This allows for a more favorable attachment of the insulation renovation sections 50 and 60 to the existing exterior walls 10 and 20.

[0079] Furthermore, in insulation renovation structures, The aforementioned corner portion is either an inner corner portion 10a or an outer corner portion 20a.

[0080] This configuration allows for a favorable attachment state of the insulation renovation section 50 to the inner corner 10a of the existing exterior wall 10, or to the outer corner 20a of the existing exterior wall 20.

[0081] This configuration allows for a favorable attachment state of the thermal insulation renovation section 60 to the corner portion 20a of the existing exterior wall 20.

[0082] Furthermore, in insulation renovation structures, Panel frames 12 and 22 (existing frame sections) are positioned on either side of the building's steel columns 11 and 21 (existing steel columns), and insulation material 17 (existing insulation material) is placed on them. The exterior wall panels 18 and 28 (existing exterior wall surface material) are arranged on the outdoor side of the aforementioned panel frames 12 and 22 (existing frame portion), The outdoor base material 15-25 (existing base material) is positioned between the panel frame 12-22 (existing frame portion) and the exterior wall panel 18-28 (existing exterior wall surface material), A method for insulating a building, which involves attaching insulating renovation sections 50 and 60 to the existing exterior walls 10 and 20 of a building, A new base material placement step (step S11) is performed by placing new base materials 53-63 (new base materials) on the outdoor side of the exterior wall panels 18-28 (existing exterior wall surface material), facing the outdoor base materials 15-25 (existing base materials) in the indoor-outdoor direction via the exterior wall panels 18-28 (existing exterior wall surface material), Step S12 is a first fastener insertion step in which the fasteners 54-64 (first fasteners) for the base are inserted from the outdoor side of the new base material 53-63 (new base material) into the outdoor base material 15-25 (existing base material), Step S13 is a new insulation material placement step in which new insulation materials 51 and 61 (new insulation materials) are placed on the outdoor side of the existing exterior walls 10 and 20, A new furring strip placement step (step S14) is performed in which new furring strips 52-62 (new furring strips) are placed on the outdoor side of the new insulation material 51-61 (new insulation material), The second fastener insertion step (step S15) involves inserting the insulation fasteners 55-65 (second fasteners) from the outdoor side of the new furring strips 52-62 (new furring strips) through the new insulation material 51-61 (new insulation material) into the new base material 53-63 (new base material), It is equipped with the following features.

[0083] This configuration allows for a favorable attachment of the insulation renovation sections 50 and 60 to the existing exterior walls 10 and 20.

[0084] Although embodiments of the present invention have been described above, the present invention is not limited to the above configuration, and various modifications are possible within the scope of the invention as described in the claims.

[0085] For example, the building to which the thermal insulation renovation structure and thermal insulation renovation method according to one embodiment of the present invention are adopted is not limited to a detached house made of light steel frame. Also, the existing exterior wall is not limited to the corners.

[0086] Furthermore, the structures of the existing exterior walls 10 and 20 and the insulation renovation sections 50 and 60 described above are not limited to those described above. For example, the new base materials 53 and 63 (new base materials) are not limited to L-shaped ones in plan view, but can take on various shapes, such as straight ones. The new base materials 53 and 63 (new base materials) are not limited to being arranged along two sides of the exterior wall panel, but may be arranged along one side or three or more sides.

[0087] In this embodiment, the insulation renovation sections 50 and 60 are attached to the existing exterior walls 10 and 20 using two types of fasteners, but the invention is not limited to this, and three or more types of fasteners may be used. [Explanation of symbols]

[0088] 10 Existing exterior wall 11 Steel columns 12 Panel Frame 15. Outdoor underlayment 17. Insulation 18 Exterior wall panels 50 Insulation Renovation Department 51 New insulation materials 52 New furring strips 53 New base material 54 Fixing devices for the base 55 Fixing devices for insulation

Claims

1. An insulation renovation structure comprising the existing exterior wall of a building and an insulation renovation section attached to the existing exterior wall, The aforementioned existing exterior wall is The existing frame section, where the existing insulation material is placed, is located on both sides of the existing steel columns of the aforementioned building. The existing exterior wall surface material is positioned on the outdoor side of the existing frame portion, An existing base material is placed between the existing frame portion and the existing exterior wall surface material, It has, The aforementioned insulation renovation section is, A new insulation material is placed on the exterior side of the existing exterior wall, A new furring strip is placed on the exterior side of the aforementioned new insulation material, A new base material is provided between the existing exterior wall material and the new insulation material, and is positioned opposite the existing base material in the indoor / outdoor direction via the existing exterior wall material, Fixing device for fixing the aforementioned insulation renovation section to the existing exterior wall, It is equipped with, The aforementioned fixing device is A first fastener is inserted into the existing base material from the outdoor side of the new base material, A second fastener is inserted from the outdoor side of the new furring strip through the new insulation material into the new base material, including, Thermal insulation renovation structure.

2. The aforementioned new base material is formed in a flat plate shape. The thermal insulation renovation structure according to claim 1.

3. The aforementioned existing exterior wall surface material constitutes the corner of the aforementioned existing exterior wall, The new base material is formed in a shape that is bent to conform to the existing exterior wall surface material that constitutes the corner. The thermal insulation renovation structure according to claim 1.

4. The aforementioned new insulation material and the aforementioned new furring strips are, The aforementioned corner includes two separate parts that correspond to two parts of the existing exterior wall material that face in different directions, The relative advantages and disadvantages of the fitting of the two parts of the new insulation material and the relative advantages and disadvantages of the fitting of the two parts of the new furring strip are configured to be opposite to each other. The thermal insulation renovation structure according to claim 3.

5. The aforementioned corner is either an inside corner or an outside corner. The thermal insulation renovation structure according to claim 3.

6. The existing frame section, where the existing insulation material is placed, is located on both sides of the existing steel columns of the building. The existing exterior wall surface material is positioned on the outdoor side of the existing frame portion, An existing base material is placed between the existing frame portion and the existing exterior wall surface material, A method for installing an insulation renovation section on the existing exterior wall of a building having the following characteristics: A new base material placement step involves placing a new base material on the outdoor side of the existing exterior wall surface material, facing the existing base material in the indoor / outdoor direction via the existing exterior wall surface material, The first fastening device insertion step involves inserting the first fastening device into the existing base material from the outdoor side of the new base material, A new insulation material placement step involves placing new insulation material on the outdoor side of the existing exterior wall, A new furring strip placement step is to place new furring strips on the outdoor side of the new insulation material, The process of inserting the second fastener into the new base material via the new insulation material from the outdoor side of the new furring strip, Equipped with, Methods for improving insulation.