JP2011214243A - External heat insulation method for building and supporting fitting - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an external heat insulation method for a building, which uses a foamed resin board-based heat insulating material, and a supporting fitting.SOLUTION: The foamed resin board-based heat insulating material (3) is laid on the outdoor-side wall surface of a building frame wall (1) while a supporting bolt (2) protruding from the building frame wall passes therethrough; after that, a leg plate portion (10) of the supporting fitting (4) is thrust into the heat insulating material (3) so as to abut on the building frame wall (1); a nut (5) is fastened to the insertion end (2b) of the supporting bolt inserted through a through-hole (8) of a holding plate portion (9), so as to fix the supporting fitting (4); furring strips (6) are fixed to a coupling plate portion (11) of the supporting fitting (4); and an external facing material (7) is attached to the furring strips (6). The supporting fitting (4) is formed in such a shape that the leg height (h) of the leg plate portion (10) is equal in dimension to the thickness (t) of the heat insulating material (3); and the holding plate portion (9) is inhibited from biting into the heat insulating material (3), while the nut (5) is fastened to the insertion end (2b) of the supporting bolt (4).

Description

The present invention relates to an outer heat insulating method for implementing an outer heat insulating structure of a building in which a heat insulating material is interposed between the frame wall and an exterior material on the outdoor side of the wall, and to be used for the outer heat insulating method. It relates to the support bracket.

The heat insulation structure of buildings in Japan is generally an “inner heat insulation structure” in which a heat insulating material is laid on the indoor side of the frame wall, but the air conditioning efficiency of the room is poor because the frame wall is affected by the outside air temperature. Especially in winter, the enclosure wall itself becomes cold due to the low outside air temperature, which causes condensation on the indoor side of the enclosure wall due to the temperature difference from the room, causing mold and mites, as well as reducing the durability of the enclosure wall. There is a problem of doing.

Therefore, in recent years, an “outer heat insulating structure” in which a heat insulating material is interposed between the housing wall and the exterior material on the outdoor side of the housing wall has been proposed. According to this outer heat insulating structure, the housing wall itself is insulated from the outside air temperature, so the air conditioning efficiency in the room is high, and condensation of the housing wall is prevented in winter, and the housing wall is changed due to changes in the outside air temperature. It is also freed from the occurrence of cracks due to repeated contraction and expansion, and the durability can be greatly improved.

Japanese Patent No. 4087418 JP 2009-68188 A

The specific technique (hereinafter referred to as “prior art”) of the “outer heat insulating structure” disclosed in Patent Document 2 proposed by the present applicant is to fix a support bolt that protrudes substantially vertically from the casing wall to the casing wall. A step of laying the heat insulating material on the wall surface of the frame wall by disposing the heat insulating material along the frame wall and passing the support bolt through the heat insulating material; With the leg of the reinforcing bracket facing the heat insulating material and the insertion hole of the reinforcing metal fitting arranged on the extension line of the support bolt, the leg portion is inserted into the heat insulating material, so that the tip of the leg becomes the housing wall The step of fixing the reinforcing bracket by advancing the reinforcing bracket until it comes into contact with the screw and screwing the fastening nut onto the supporting bolt inserted into the insertion hole, and then the supporting bolt protruding to the outside of the heat insulating material Secure the support bracket using a nut at the tip. A step of a step of fixing the furring strip in the support fitting, and is configured to perform the step of attaching the exterior member to the barrel edge.

The embodiment of the prior art requires two kinds of metal fittings including a reinforcing metal fitting for reinforcing the supporting bolt and a supporting metal fitting for fixing the trunk edge between the supporting bolt and the trunk edge. There are restrictions for cost reduction, and management of parts inventory is also complicated.

And since the process for attaching two types of metal fittings sequentially is required, there exists a problem which should be improved also in the point of shortening of a construction period and construction cost.

Furthermore, in the case of the prior art, since the structure supports the outer wall weight and seismic load by the bending moment of the support bolt protruding from the reinforcing bracket, a large number of support bolts are implanted with a close spacing between the support bolts. It is necessary to fix a large number of reinforcing brackets.

By the way, in recent years, a foamed resin board-based heat insulating material has been provided as a heat insulating material for buildings, and has attracted attention. For example, the foamed resin board-based heat insulating material provided under the trade name “Fenova Board” (Sekisui Chemical Co., Ltd.) is a board-shaped heat insulating material in which phenolic resin is foamed. It has top-class thermal insulation performance.

Therefore, it is desirable to use a foamed resin board-based heat insulating material such as the above-mentioned “Phenova board” in the outer heat insulating structure.

However, such a foamed resin board-based heat insulating material is structurally extremely fragile, and easily collapses and shatters when subjected to external force. Therefore, it is difficult to apply the conventional technology such as Patent Document 2. It is. Since the outer heat insulation method of the prior art is a structure in which the legs of the reinforcing metal fittings are inserted while being pierced into the heat insulating material, when the foamed resin board type heat insulating material is used, the legs of the reinforcing metal fittings are collapsed due to the collapse of the heat insulating material. However, on the other hand, the collapse of the pierced part grows toward the surroundings and reduces the volume by shattering, resulting in a cavity part lacking heat insulating material around the reinforcing metal fittings. There is a problem.

In this regard, the foamed resin board heat insulating material has a sandwich structure in which thin face materials (PET non-woven fabric) are adhered to both front and back surfaces in order to maintain the shape retention of the board state. However, when the leg portion of the reinforcing metal fitting is pierced as described above, the face material is easily peeled off from the board, so that it is not possible to prevent the occurrence of a cavity due to the collapse inside the board. In addition, in the embodiment of the prior art, the head of the reinforcing metal fitting is buried in the heat insulating material, but when using a foamed resin board type heat insulating material, the head material of the reinforcing metal fitting is formed by a face material. Burial is prevented. When the nut is firmly tightened, the head is pressed against the heat insulating material, which causes the board to collapse.

In the present invention, two types of brackets composed of a reinforcing bracket and a supporting bracket as in the above-described prior art are constituted by one type of supporting bracket, and the supporting bracket has both a reinforcing function of supporting bolts and a connecting support function of the trunk edge. It is an object to make it possible to reduce the cost of parts and facilitate the management of parts inventory, and to shorten the construction period and reduce the construction cost.

Thus, one type of support fitting of the present invention has multiple functions, thereby contributing to the ease of construction of the outer heat insulation method.

At this time, in the prior art, as described above, the bending force of the support bolt protruding from the reinforcing bracket is used to support the outer wall load and the seismic load. Force) and the compressive force acting on the legs of the support bracket, and the support load per location is increased to reduce the number of support bolts and support brackets. It is an object to make it possible to reduce this.

Furthermore, the present invention makes it possible to use a foamed resin board-based heat insulating material having excellent heat insulating performance by improving the outer heat insulating method as in the prior art described above, and in particular, pierced the support fitting. It is an object of the present invention to prevent the collapse of the heat insulating material from growing toward the surroundings and to prevent the occurrence of a cavity portion lacking the heat insulating material.

Therefore, the place where the outer heat insulation construction method of the present invention is configured as a means is an outer heat insulating structure of a building formed by attaching an exterior material in a state where a foamed resin board type heat insulating material is interposed on the outdoor side of the frame wall, Fixing the support bolt projecting substantially vertically from the housing wall to the housing wall; disposing a heat insulating material along the housing wall; and pressing the heat insulating material against the housing wall to A step of laying the heat insulating material on the wall surface of the housing wall in a state of being penetrated, a holding plate portion having a through hole, a leg plate portion extending in the back surface direction of the holding plate portion, and the holding plate portion By using a support metal fitting having a connecting plate portion extending in the surface direction, the leg plate portion is pierced into a heat insulating material from a position where the through hole of the support metal fitting faces the support bolt. The tip of the leg plate is brought into contact with the housing wall and inserted into the through hole. Fixing the support fitting by fastening a nut to the insertion end portion of the support bolt, holding the surface of the heat insulating material by the holding plate portion of the fixed support fitting, and then connecting the support fitting It is in the point which consists of the process of adhering a trunk edge to a board part, and the process of attaching an exterior material to the trunk edge.

In this case, the support metal fitting is formed so that the leg length h of the leg plate portion extending from the back surface of the holding plate portion to the tip of the leg plate portion is equal to the thickness t of the heat insulating material, and is inserted into the insertion hole. In the state where the nut is fastened to the insertion end of the bolt, the leg plate portion prevents the holding plate portion from biting into the heat insulating material.

Furthermore, the holding plate portion of the support bracket constitutes the through hole by a long hole extending in the plate width direction of the leg plate portion, and the leg plate portion of the support bracket is a base provided continuously to the holding plate portion. The width W2 of the tip portion is formed such that W1 <W2 with respect to the width W1 of the portion, the root portion forms a substrate portion continuous over the width W1, and the tip portion extends from the tip edge. A bifurcated leg end portion is formed by a substantially V-shaped notch that is recessed, and when the leg plate portion is pierced into the heat insulating material, a slit corresponding to the width W2 is cut and formed in the heat insulating material, The substrate portion is configured to enter the slit.

Moreover, when the support metal fitting in the outer heat insulation method of the present invention is configured as a means, a rectangular flat plate-shaped holding plate portion having a through hole formed by bending a single metal plate, and the holding plate portion A leg plate portion bent from the both side edges to the back surface side, and a connecting plate portion bent from the both side edges of the holding plate portion to the front surface side, and the connecting plate portion is fixed for attaching the trunk edge A hole is provided, and a fixing screw inserted from the fixing hole is screwed into and screwed into the barrel edge with the barrel edge fitted between the pair of connecting plate portions.

In a preferred embodiment of the present invention, with respect to the center axis Z of the support bolt, the first axis X orthogonal to the center axis Z, and the second axis Y orthogonal to the center axis Z and the first axis X; The bracket is formed by bending the leg plate portion from the both side edges of the holding plate portion located at the first axis X toward the back surface side, and from the both side edges of the holding plate portion located at the second axis Y to the surface side. The connecting plate portion is bent toward the holding plate portion, and the holding plate portion forms the through hole by a long hole extending in parallel with the second axis Y.

The connecting plate portion is provided with a temporary fixing hole constituted by a long hole extending in parallel with the central axis Z of the support bolt, and is inserted from the temporary fixing hole in a state where a trunk edge is fitted between a pair of connecting plate portions. The temporary fixing screw is preferably configured to be screwed into the trunk edge.

It is preferable that the support fitting forms a substantially V-shaped notch from the leading edge of the leg plate portion, and forms a tapered edge along the notch.

According to the outer heat insulation method of the present invention described in claim 1 and claim 2, it is possible to use the foamed resin board heat insulating material 3 having extremely excellent heat insulating performance.

At this time, although the foamed resin board-based heat insulating material 3 is extremely fragile and easily collapses due to external force, according to the present invention, by using the characteristic support metal fitting 4, Collapse of the heat insulating material 3 can be minimized. That is, the foamed resin board type heat insulating material 3 is easily broken by the board portion 3a at the portion where the leg plate portions 10 and 10 of the support metal fitting 4 are pierced, but the support metal fitting 4 of the present invention has the leg plate. By forming the leg length h of the portion 10 equal to the thickness t of the heat insulating material 3, the holding plate portion 9 is configured to suitably hold the surface of the heat insulating material 3. Accordingly, the leg plate portions 10, 10 are pierced until they abut against the housing wall 1, and the holding plate portion 9 is thermally insulated by the leg plate portions 10, 10 while being firmly fixed to the support bolt 2 by fastening the nut 5. Intrusion into the material 3 is prevented, and the surface of the heat insulating material 3 is held by the holding plate portion 9. Thereby, since the collapse of the inside of the heat insulating material 3 is suppressed only to the piercing part of the leg plate part 10, the collapse does not cause a cavity portion that grows in the surroundings and shatters, and has a heat insulating performance. To prevent the loss of

In particular, in the outer heat insulating structure forming the dry-type ventilation layer, it is difficult to support the weight of the outer wall and the seismic load only by the bending moment of the support bolt 2 because the exterior material 7 is greatly displaced from the wall surface of the frame wall 1. On the other hand, according to the present invention, the support metal fitting 4 is constituted by a single metal fitting in which the holding plate portion 9 is provided with the leg plate portion 10 and the connection plate portion 11, and the connection plate portion 11 has the trunk edge 6. By adopting a configuration in which the outer wall is fixed, the weight of the outer wall and the seismic load are supported by a couple of axial force (pull-out force) acting on the support bolt 2 and compressive force acting on the leg plate portion 10. Accordingly, it is possible to configure so that the supporting load per place becomes large, and as a result, the number of supporting bolts 2 and supporting brackets 4 can be reduced, so that the material and construction cost can be reduced. Become.

Further, according to the third aspect of the present invention, when the leg plate portion 10 of the support metal fitting 4 is inserted into the heat insulating material 3, the bifurcated leg end portions 10b and 10b have a width W2 in the heat insulating material 3. The substrate portion 10a having a width W1 (W1 <W2) follows the slit S while entering the slit S. The through hole 8 of the holding plate portion 9 is constituted by a long hole 12 extending in the plate width direction of the leg plate portion 10. Therefore, if the support bolt 2 is displaced from the predetermined position of the through hole 8, the leg plate portion 10 is moved inside the slit S having the width W2, and the heat insulation is performed at the leading edge of the leg end portion 10b. By simply cutting the material 3 slightly, the through hole 8 and the support bolt 2 can be suitably positioned.

Moreover, the leg plate portion 10 can easily pierce the heat insulating material 3 with the bifurcated leg end portions 10b and 10b formed by the substantially V-shaped cutout portion 16 at the time of piercing. In a fixed state in which the leg end portions 10b and 10b are in contact with the housing wall 1 and the nut 5 is fastened to the holding plate portion 9, the leg end portions 10b and 10b having a wide width W2 are stably supported by the housing wall 1. Is done. In this supported state, the leg end portions 10b and 10b gradually increase in width from the tip toward the substrate portion 10a and are connected by the substrate portion 10a continuous over the width W1, so that the compression force as described above is prevented. Therefore, it does not easily buckle and deform.

According to the support metal fitting 4 of the present invention described in claim 4, a rectangular plate-shaped holding plate portion 9 having a through hole 8 formed by bending a single metal plate, and the holding plate portion 9. Leg plate portions 10 and 10 bent from the both side edges to the back surface side, and connection plate portions 11 and 11 bent from the both side edges of the holding plate portion 9 to the front surface side. A fixing hole 15 for attaching the trunk edge is provided in the body, and a fixing screw 19 inserted from the fixing hole 15 in a state where the trunk edge 6 is fitted between the pair of connecting plate portions 11 and 11 is screwed into the trunk edge 6 and screwed. Since one type of support metal fitting 4 is arranged between the housing wall 1 and the trunk edge 6 via the support bolt 2, two types that are separate and independent as in the prior art. Compared to the technology using metal fittings, it contributes to the reduction of parts costs and the ease of parts inventory management. In addition, since one type of support metal fitting 4 has both the reinforcement function of the support bolt 2 and the connection support function of the trunk edge 6, it contributes to the ease of construction of the outer heat insulation method, shortening the construction period, and the construction cost. Can be reduced.

And according to this invention of Claim 5, the support metal fitting 4 bends and forms the said leg board parts 10 and 10 toward the back surface side from the both-sides edge of the holding board part 9 located in the 1st axis line X. As shown in FIG. The connecting plate portions 11 and 11 are bent from both side edges of the holding plate portion 9 located on the second axis Y toward the surface side, and the holding plate portion 9 extends in parallel with the second axis Y. Since the through hole 8 is constituted by the long hole 12, when the leg plate portions 10, 10 of the support metal fitting 4 are inserted into the heat insulating material 3, the support bolt 2 is displaced from a predetermined position of the through hole 8. In this case, there is an effect that the support fitting 4 can be positioned in a predetermined position by moving the support fitting 4 in the longitudinal direction of the long hole 12. At this time, since the longitudinal direction of the long hole 12 is formed so as to coincide with the width direction of the leg plate portions 10, 10, even if the leg plate portion 10 is already inserted into the heat insulating material 3, When the leg plate portion 10 is moved in the longitudinal direction of the hole 12, the heat insulating material 3 is cut by the side edges of the leg plate portion 10, so that the support fitting 4 can be easily positioned.

According to the present invention described in claim 6, the connecting plate portions 11, 11 are provided with a temporary fixing hole 13 constituted by a long hole 14 extending in parallel with the central axis Z of the support bolt 2, and a pair of connecting plates. Since the temporary fixing screw 18 inserted from the temporary fixing hole 13 is screwed into the trunk edge 6 in a state where the trunk edge 6 is fitted between the portions 11 and 11, it is fixed to the support bolt 2. The trunk edge 6 is inserted into the connecting plate portions 11 and 11 and temporarily fixed with the temporary fixing screws 18 with respect to the large number of support fittings 4 and 4 arranged in the state, and is inserted through the elongated holes 14. The barrel edge 6 can be positioned at a predetermined position by moving and adjusting in the direction of the central axis Z. After positioning in this way, the fixing screw 19 is screwed into the barrel edge 6 from the fixing hole 15 and screwed. This makes it possible to finally fix the trunk edge 6 and It becomes easy.

According to the seventh aspect of the present invention, since the support fitting 4 forms the substantially V-shaped notch 16 from the tip edge of the leg plate portion 10, the leg plate portions 10, 10 are connected to the heat insulating material 3. It is possible to pierce easily and to suppress the internal collapse of the heat insulating material 3 to a minimum.

It is a perspective view shown in the state which decomposed | disassembled each member for implementing the outer heat insulation construction method of this invention. It is a perspective view which shows one Embodiment of the support metal fitting used for the outer heat insulation construction method of this invention. It is a perspective view which shows the state which laid the heat insulating material of the foaming resin board type | system | group on the housing wall. It is sectional drawing which shows the state which laid the heat insulating material of the foaming resin board type | system | group on the housing wall, (A) is sectional drawing corresponding to the YY line of FIG. 2, (B) is XX line of FIG. FIG. It is a perspective view explaining the method of fixing a support metal fitting to a support bolt. It is sectional drawing which shows the state which fixed the support metal fitting to the support volt | bolt, (A) is sectional drawing corresponding to the said YY line, (B) is sectional drawing corresponding to the said XX line. It is a perspective view explaining the method of adhering a trunk edge to a support metal fitting. It is sectional drawing which shows the state which fixed the trunk edge to the support metal fitting, and attached the exterior material to this trunk edge, (A) is sectional drawing corresponding to the said YY line, (B) is said XX line | wire. It is sectional drawing corresponding to. It is sectional drawing which shows embodiment using two types of support metal fittings from which the leg length of the leg part differed. The embodiment which used the reinforcement cylinder material between the holding plate part of a support metal fitting and a housing wall is shown, (A) is a sectional view showing an outer heat insulation structure, and (B) is a perspective view showing a reinforcement cylinder material. .

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings.

(Configuration of outer heat insulation structure)
As shown in FIG. 8, in the “outside heat insulating structure” of the present invention, the base end 2 a of the support bolt 2 is embedded in the building wall 1 of the building, and the heat insulating material 3 is laid on the outdoor side of the building wall 1. The support fitting 4 is fixed to the support bolt 2 with a nut 5 in a state where the support fitting 4 is pierced into the heat insulating material 3, and after fixing the trunk edge 6 to the support fitting 4, an exterior material 7 is attached to the trunk edge 6. Thus, the outer heat insulating structure by the dry-type ventilation layer construction method is configured.

The heat insulating material 3 is a foamed resin board type heat insulating material. For example, a board-shaped heat insulating material obtained by foaming a phenol resin provided as a trade name “Fenova Board” (Sekisui Chemical Co., Ltd.) is used for heat insulation. It has a board part 3a that has excellent performance but is fragile and easily disintegrates, and has a sandwich structure in which thin face materials 3b and 3c (for example, PET nonwoven fabric) are laminated and adhered to both front and back surfaces of the board part 3a. ing.

As shown in FIGS. 1 and 2, the support metal fitting 4 is formed by bending a metal plate such as a single steel plate to form a rectangular flat plate-shaped holding plate portion 9 having a through hole 8 and the holding plate. A leg plate portion 10 bent from both side edges of the plate portion 9 to the back surface side and a connecting plate portion 11 bent from both side edges of the holding plate portion 9 to the front surface side are provided.

In the case of the illustrated embodiment, as shown in FIG. 2, the center axis Z of the support bolt 2, the first axis X orthogonal to the center axis Z, and the second axis orthogonal to the center axis Z and the first axis X With respect to the axis Y, the support bracket 4 is formed by bending a pair of leg plate portions 10 and 10 from both side edges of the holding plate portion 9 located on the first axis X toward the back surface side, A pair of connecting plate portions 11, 11 are bent from both side edges of the holding plate portion 9 positioned toward the surface side. In the case of the illustrated example, the trunk edge 6 is arranged in the vertical direction by setting the first axis X to the vertical direction and the second axis Y to the horizontal direction. However, when the trunk edge 6 is arranged in the horizontal direction, The first axis X may be the horizontal direction and the second axis Y may be the vertical direction.

The through hole 8 of the holding plate portion 9 has an inner diameter through which the support bolt 2 is inserted, and is constituted by a long hole 12 extending in the plate width direction of the leg plate portions 10, 10, that is, parallel to the second axis Y. ing.

The connecting plate portions 11 and 11 are provided with a temporary fixing hole 13 at a substantially central portion in the width direction. The temporary fixing hole 13 includes a long hole 14 extending in parallel with the central axis Z, and Fixing holes 15 and 15 are provided on both sides of the stop hole 13.

As shown in FIG. 2, the leg plate portions 10 and 10 are formed such that the width W2 of the distal end portion is W1 <W2 with respect to the width W1 of the root portion provided continuously to the holding plate portion 9. The base portion forms a substrate portion 10a continuous over the width W1, and the distal end portion is formed of a bifurcated leg end portion 10b, 10b by a substantially V-shaped cutout portion 16 recessed from the distal end edge. A tapered edge 17 is formed along the notch 16 inside the leg end portions 10b and 10b.

As described above, the outer heat insulating structure based on the support metal fitting 4 in which the holding plate portion 9 is integrally provided with the leg plate portion 10 and the connecting plate portion 11 has the holding plate portion 9 in a state where the leg plate portion 10 is inserted into the heat insulating material 3. Is fixed to the support bolt 2 with a nut 5, and the trunk edge 6 is fixed to the connecting plate portion 11, and the exterior end 7 is attached to the trunk edge 6. The parts 10b and 10b are pressed against the housing wall 1 and the support fitting 4 is fixed in a stable state. The outer wall weight and the seismic load are supported by a couple of axial force (pull-out force) acting on the support bolt 2 and compressive force acting on the leg plate portion 10, so that the support load per location is large. Therefore, the number of the support bolts 2 and the support fittings 4 can be reduced, and the material / construction cost can be reduced.

(Configuration of the outer insulation method)
As shown in FIG. 1, first, support bolts 2 projecting substantially vertically from the housing wall 1 are fixed to the housing wall 1. Although not shown, specifically, an anchor (not shown) is embedded in the housing wall 1, and the base end 2a of the support bolt 2 is implanted in the anchor. The support bolts 2 are arranged vertically and horizontally with a predetermined interval on the wall surface of the housing wall 1.

From this state, when the heat insulating material 3 is disposed along the housing wall 1 and the heat insulating material 3 is pressed toward the housing wall 1, the support bolt 2 attaches the heat insulating material 3 as shown in FIGS. 3 and 4. By passing through, the heat insulating material 3 is laid on the wall surface of the frame wall 1.

Thereafter, from the position where the through hole 8 of the support metal fitting 4 faces the support bolt 2, the legs of the leg plate portions 10, 10 formed in a sharp shape through the notch portions 16 as shown in FIGS. 5 and 6. When the end portions 10b and 10b are pierced into the heat insulating material 3, the leg end portions 10b and 10b are formed by cutting a wide slit S having the width W2 from the face material 3b of the heat insulating material 3 toward the board portion 3a. Then, the substrate portion 10a having a width W1 (W1 <W2) enters the slit S. When the front ends of the leg plate portions 10 and 10 are brought into contact with the housing wall 1, the support bolt 2 is inserted into the through hole 8, and therefore, by tightening the nut 5 to the insertion end portion 2 b of the support bolt 2, The support metal fitting 4 is fixed. At this time, when the leg plate portions 10 and 10 are inserted into the heat insulating material 3 and entered to a predetermined depth, the support bolt 2 is inserted into the through hole 8, so that the nut 5 is screwed into the insertion end portion 2b, The nut 5 may be tightened until the tips of the leg plate portions 10 and 10 abut against the housing wall 1 while the support metal fitting 4 is advanced by the screwing of the nut 5.

Since the through hole 8 formed in the holding plate portion 9 of the support metal fitting 4 is constituted by the long hole 12, if the support bolt 2 is displaced from the predetermined position in the direction of the second axis Y, the long hole is formed. The support fitting 4 can be moved in the longitudinal direction of 12 and positioned at a predetermined position. At this time, the leg plate portion 10 is positioned inside the slit S having a wide width W2, and has gaps of the slit S on both sides of the leg end portions 10b and 10b. Since the longitudinal direction and the width direction of the leg plate portions 10 and 10 coincide with each other, the leg plate portion 10 is moved in the longitudinal direction of the long hole 12 even when the leg plate portion 10 is already stabbed into the heat insulating material 3. Thus, the position of the support fitting 4 can be easily adjusted by slightly cutting the heat insulating material 3 at the tip portions of the leg end portions 10b and 10b.

As shown in FIG. 6, the leg lengths h of the leg plate portions 10 and 10 are formed to be equal to the thickness t of the heat insulating material 3 including the face materials 3b and 3c (that is, h = t). Even if the nut 5 is firmly fastened to the insertion end portion 2b of the support bolt 2 in a state where the tip portions of the leg plate portions 10 and 10 are in contact with the housing wall 1, the holding plate portion 9 bites into the heat insulating material 3. The holding plate portion 9 holds the heat insulating material 3 along the surface of the face material 3b.

The foamed resin board-based heat insulating material 3 collapses with the board portion 3 a where the leg plate portions 10, 10 are pierced as chips, but the holding plate portion 9 does not bite into the heat insulating material 3. Since the surface of the board part 3a is held via 3b, the collapsing part of the board part 3a does not grow around. Further, around the support bolt 2, a broken piece of the board portion 3 a is held by the pair of leg plate portions 10, 10 on the back surface side of the holding plate portion 9. Accordingly, the inside of the board portion 3a located around the pierced portion is not shattered to reduce the volume, so that a cavity portion is not generated.

After the installation of the heat insulating material 3 and the fixing of the support fitting 4 over a predetermined area of the frame wall 1, as shown in FIG. 7, the connecting plate portions 11 and 11 of the arranged support fittings 4 and 4 are connected to the body edges. 6 is inserted. At this time, if the connecting plate portions 11 of the support brackets 4 and 4 arranged in line are not positioned on the straight line due to irregularities in the support bolts 2 and 2 arranged in a straight line, etc. The nut 5 of the support bracket 4 which has been displaced is moved along the elongated hole 12 in a loosened state, adjusted so as to be positioned on a predetermined straight line, and after tightening the nut 5 again, 6 is inserted into the connecting plate portions 11 and 11 of each support fitting 4. Also in this case, as described above, since the longitudinal direction of the long hole 12 and the width direction of the leg plate portions 10 and 10 are formed to coincide with each other, the heat insulating material 3 is cut at the side edges of the leg plate portions 10 and 10. Thereby, the support metal fitting 4 can be moved easily.

First, a temporary fixing screw 18 made of a tapping screw, a drill screw or the like is inserted from the temporary fixing hole 13 in a state where the body edge 6 is fitted in the connecting plate portions 11, 11 of the support fittings 4, 4 arranged in a straight line. Screw into the barrel edge 6. The temporary fixing screw 18 is screwed so as to be movable along the long hole 14 constituting the temporary fixing hole 13, not in the completely fastened state. The barrel edge 6 is moved in the direction of the center axis Z through the long hole 14 with the barrel edge 6 temporarily fixed with the temporary fixing screw 18 to all the support fittings 4 and 4 arranged in a straight line. Then, after adjusting the position in the entry / exit direction, a fixing screw 19 made of a tapping screw or a drill screw or the like is screwed into the fixing hole 15 of the connecting plate portion 11, 11 of each support fitting 4 and screwed. Thereby, the trunk edge 6 is fixed to a predetermined position.

Thereafter, the exterior insulation method is completed by attaching the exterior material 7 to the fixed body edges 6 and 6 via connecting fittings (not shown), and the exterior insulation structure as shown in FIG. 8 is completed. To do.

(Second Embodiment)
As in the second embodiment shown in FIG. 9, the support bracket 4 of the present invention has two types of leg lengths h1 and h2 (h1 <h2) with respect to the leg length h of the leg plate portions 10 and 10 as necessary. Three or more types of support brackets 4a and 4b can be prepared.

At the site where the outer heat insulation method is applied, the wall surface of the frame wall 1 is not necessarily formed so that the entire surface is the same plane, and the wall surface 1b retreats with respect to the wall surface 1a as indicated by an arrow H in the figure. There may be irregularities in and out. When constructing the outer insulation method according to the present invention for renovation of an existing building, it is expensive to repair the irregularity of the entrance and exit by plastering work, so that there are multiple types corresponding to the existing wall surfaces 1a and 1b. It is advantageous in terms of cost to prepare the existing support brackets 4a and 4b.

In this case, also in the above-described embodiment in which one type of the support metal 4 is used, the trunk edges 6, 6 in the direction of entering and exiting are provided via the long holes 14 of the temporary fixing holes 13 provided in the connecting plate portion 11 of the support metal 4. It is possible to adjust the position.

However, as shown in FIG. 9, when one continuous heat insulating material 3 is disposed across the wall surfaces 1a and 1b, the heat insulating material 3 is laid in a state of being lifted from the retreated wall surface 1b. For this reason, if the support metal fitting 4 is advanced until the front-end | tip part of the leg-plate parts 10 and 10 contact | abuts to this wall surface 1b, the holding board part 9 will press the heat insulating material 3 strongly. As described above, the foamed resin board-based heat insulating material 3 is extremely fragile. Therefore, if it is strongly pressed, the board portion 3a may be collapsed to reduce the heat insulating performance.

In this regard, according to the second embodiment shown in FIG. 9, the support plate 4b having the long leg length h2 is provided on the receded wall surface 1b, so that the holding plate portion 9 of the support bracket 4b covers the surface of the heat insulating material 3. There is an advantage that the heat insulating material 3 can be suitably held along the surface without being pressed.

(Third embodiment)
In the third embodiment shown in FIG. 10, the reinforcing cylinder member 20 is extrapolated to the support bolt 2 before the support fitting 4 is inserted into the heat insulating material 3. The reinforcing cylinder member 20 is formed such that the axial length L is equal to the leg length h of the leg plate portions 10 and 10 of the support fitting 4 and the thickness t of the heat insulating material 3 (that is, L = h = t). After the reinforcing cylindrical member 20 is inserted into the heat insulating material 3 while being extrapolated to the support bolt 2, the leg plate portions 10 and 10 of the support fitting 4 are pierced into the heat insulating material 3, and the tips of the leg plate portions 10 and 10 are inserted. When abutting against the housing wall 1, the holding plate portion 9 is abutted against the end surface of the reinforcing cylinder member 20.

When the pair of leg plate portions 10 and 10 of the support metal fitting 4 are bent with a thin metal plate, if the nut 5 is firmly tightened, the leg plate portions 10 and 10 may be deformed and buckled. Since the part 9 bites into the heat insulating material 3 and presses down the foamed resin board heat insulating material 3, there is a possibility that the inside of the board part 3a is collapsed and the heat insulating performance is lowered.

In this regard, according to the third embodiment shown in FIG. 10, even if the nut 5 is firmly tightened, the holding plate portion 9 is supported by the reinforcing cylinder member 20, so that it does not bite into the heat insulating material 3. . In this case, although the number of parts is increased by the reinforcing cylindrical member 20, it is possible to reduce the total cost by thinning the metal plate forming the support bracket 4, and in particular, preventing the internal collapse of the heat insulating material 3 This is advantageous.

DESCRIPTION OF SYMBOLS 1 Housing wall 2 Support bolt 2a Base end 2b of support bolt Insertion end part 3 of support bolt Thermal insulation material 3a Board part 3b, 3c Face material 4 Support metal fitting 5 Nut 6 Trunk edge 7 Exterior material 8 Through hole 9 Holding plate part 10 Leg plate Part 11 Connection plate part 12 Long hole 13 Temporary fixing hole 14 Long hole 15 Fixing hole 16 Notch part 17 Edge 18 Temporary fixing screw 19 Fixed screw 20 Reinforcing cylinder material

Claims (7)

It is an external heat insulating structure of a building in which an exterior material (7) is attached in a state where a foamed resin board type heat insulating material (3) is interposed on the outdoor side of the frame wall (1),
Fixing a support bolt (2) protruding substantially vertically from the housing wall to the housing wall (1);
The heat insulating material (3) is disposed along the housing wall (1), and the heat insulating material (3) is passed through the support bolt (2) by pressing the heat insulating material against the housing wall. Laying on the wall of the frame wall (1),
A holding plate portion (9) having a through hole (8), a leg plate portion (10) extending in the back surface direction of the holding plate portion (9), and a surface direction of the holding plate portion (9). By using a support fitting (4) having a connecting plate part (11) provided;
From the position where the through hole (8) of the support metal fitting (4) faces the support bolt (2), the leg plate portion (10) is pierced into the heat insulating material (3) so that the tip of the leg plate portion is removed. The support metal fitting was fixed by abutting the housing wall (1) and fastening the nut (5) to the insertion end (2b) of the support bolt inserted through the through hole (8). A step of holding the surface of the heat insulating material (3) by the holding plate portion (9) of the support fitting (4);
Thereafter, the step of fixing the trunk edge (6) to the connecting plate portion (11) of the support fitting (4),
A method for externally insulating a building, comprising the step of attaching an exterior material (7) to the trunk edge (6). The support bracket (4) has the leg length (h) of the leg plate portion (10) from the back surface of the holding plate portion (9) to the tip of the leg plate portion (10) equal to the thickness (t) of the heat insulating material (3). And is held by the leg plate portion (10) with the nut (5) fastened to the insertion end (2b) of the support bolt (4) inserted through the insertion hole (8). The exterior heat insulating method for a building according to claim 1, wherein the plate portion (9) is configured to prevent biting into the heat insulating material (3). The holding plate portion (9) of the support fitting (4) constitutes the through hole (8) by a long hole (12) extending in the plate width direction of the leg plate portion (10),
The leg plate part (10) of the support metal fitting (4) has a width (W2) at the tip end thereof that satisfies W1 <W2 with respect to the width (W1) of the root part provided continuously to the holding plate part (9). The base part forms a substrate part (10a) continuous over the width (W1), and the tip part is a substantially V-shaped notch part (16) recessed from the tip edge. To form a bifurcated leg end (10b, 10b),
When the leg plate portion (10) is pierced into the heat insulating material (3), a slit (S) corresponding to the width (W2) is cut and formed in the heat insulating material (3), and the substrate is formed in the slit (S). The exterior heat insulating method for a building according to claim 1 or 2, wherein the part (10a) is configured to enter. It is a support bracket in the outer heat insulation method according to claim 1, 2, or 3,
The support fitting (4) is formed by bending a single metal plate to form a rectangular flat plate-shaped holding plate portion (9) having a through hole (8), and both sides of the holding plate portion (9). A leg plate portion (10, 10) formed bent from the edge to the back side, and a connecting plate portion (11, 11) bent from the both side edges of the holding plate portion (9) to the surface side,
The connecting plate part (11) is provided with a fixing hole (15) for attaching a trunk edge, and the fixing hole (15) is inserted in a state where the trunk edge (6) is fitted between a pair of connecting plate parts (11, 11). The fixing bracket (19) inserted from (1) is screwed into the trunk edge (6) and screwed into the body edge (6). A central axis Z of the support bolt (2), a first axis X orthogonal to the central axis Z, and a second axis Y orthogonal to the central axis Z and the first axis X;
The support bracket (4) is formed by bending the leg plate portions (10, 10) from both side edges of the holding plate portion (9) located on the first axis X toward the back surface side, and the second axis Y The connecting plate portions (11, 11) are bent from both side edges of the holding plate portion (9) located at the surface side,
The outside of the building according to claim 4, wherein the holding plate portion (9) comprises the through hole (8) by a long hole (12) extending in parallel with the second axis Y. Support metal fittings in the insulation method. The connecting plate portion (11, 11) is provided with a temporary fixing hole (13) constituted by a long hole (14) extending in parallel with the central axis Z of the support bolt (2), and a pair of connecting plate portions (11 , 11) with the barrel edge (6) inserted, the temporary fixing screw (18) inserted from the temporary fixing hole (13) is screwed into the barrel edge (6). The support metal fitting in the outer heat insulation construction method of the building of Claim 4 or 5 characterized by the above-mentioned. The building according to claim 4, 5 or 6, wherein the support bracket (4) is formed by forming a substantially V-shaped notch (16) from a tip edge of the leg plate portion (10). Support metal fittings in the outer insulation method.

Images