JP4545179B2 - Exterior insulation method for building and reinforcing metal fittings for bolts - Google Patents

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 the exterior material on the outdoor side of the wall, and bolt reinforcement used for the outer heat insulating method. Related to brackets.

  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 interior 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.

JP 2000-73515 A JP-A-2005-90199 JP 2005-220628 A

  The “outer heat insulating structure” (hereinafter referred to as “prior art”) described in Patent Document 1 has a base end 2a of a support bolt 2 embedded in a building wall 1 of a building as shown in FIG. After the reinforcing metal fitting 6 is attached to the support bolt 2, the heat insulating material 3 is laid on the outside of the housing wall 1, and the exterior material 5 is attached to the outside of the heat insulating material 3 via the trunk edge 4. The body edge 4 is fixed to the tip 2b of the support bolt 2 penetrating the heat insulating material 3 via a nut 7, and the exterior material 5 is fixed to the body edge 4 via a screw 8.

  The reinforcing metal fitting 6 includes a cylindrical mounting portion 9 through which the support bolt 2 is inserted and a plurality of support plates 10 projecting from the mounting portion 9, and each support plate 10 extends from the tip 10 b of the bottom side 10 a to the support bolt. The strut structure is formed by forming a substantially straight hypotenuse 10c directed to the distal end side of No. 2, and is formed in a right triangle in which the base 10a and one side 10d along the mounting portion 9 intersect at a right angle. In addition, the reinforcing metal fitting 6 includes a case where two support plates 10 are provided in the diameter direction of the mounting portion 9 and two additional support plates 10 in the diameter direction perpendicular to the diameter direction in addition to the two support plates 10 in total. In some cases, a single support plate 10 is provided.

  In the outer heat insulation method according to this prior art, after fixing the support bolt 2 to the frame wall 1, the reinforcing metal fitting 6 is attached to the support bolt 2, and then the heat insulating material 3 is laid. Therefore, when the heat insulating material 3 is pressed from the outdoor side toward the frame wall 1 in order to lay the heat insulating material 3 with the reinforcing metal fitting 6 attached to the support bolt 2, as shown in FIG. The front end 2b of the bolt 2 penetrates the heat insulating material 3 to enter while forming the through hole 11, and similarly, the support plate 10 of the reinforcing bracket 6 enters the heat insulating material 3 while expanding the slit 12 to form the slit 12. Thus, the heat insulating material 3 is laid on the housing wall 1 in a state where the support bolt 2 and the reinforcing metal fitting 6 are passed through.

  However, since the reinforcing metal fitting 6 is provided with a plurality of support plates 10 in a protruding shape, the pressing resistance of the heat insulating material 3 is large, and it is difficult to perform the laying work well. In particular, when the heat insulating material 3 is configured in a cotton shape with flexible fibers such as glass wool, the outer edge of the support plate 10 must enter while pressing the cotton-like fibers of the heat insulating material 3 separately, At this time, since the heat insulating material 3 is flexibly deformed, it is actually difficult to cut and form the slit 12 as described above. For this reason, when the heat insulating material 3 is pressed against the reinforcing metal fitting 6, the heat insulating material 3 swells as shown in FIG. 12B, making it difficult to install the heat insulating material. Therefore, it is necessary to level the surface of the heat insulating material 3 by pressing such a bulge, but since the reinforcing metal fitting 6 is interposed between the housing wall 1 and the heat insulating material 3, as shown in FIG. There is a possibility that a hollow nest S is formed at a portion corresponding to the reinforcing metal fitting 6. For this reason, it is necessary to make the thickness of the support plate 10 as thin as possible so that the reinforcing metal fitting 6 can be cut into and intruded well with respect to the flexible heat insulating material 3. When fastened, there arises a problem that the support plate 10 is buckled and deformed as shown by a chain line in FIG.

  In addition, in the case of the prior art, the heat insulating material 3 cannot be made of a material that makes it difficult for the support plate 10 to enter, for example, a plate-like foam material, etc. There exists a fault that the selection range of the heat insulating material 3 is limited.

  Even if the support plate 10 is configured to be able to enter while forming the slits 12 by pushing the fibers of the heat insulating material 3 made of fiber, the cotton-like fibers are restored to close the slits 12. Therefore, when the reinforcing metal fitting 6 has the bottom side 10a as in the prior art, as shown in FIG. 12A, the opening end 12a of the slit 12 is restored to the bottom side 10a while the oblique side 10c enters. There is a possibility of getting caught. In this case, if the heat insulating material 3 is forcibly and strongly pressed toward the housing wall 1, the vicinity of the opening end 12 a of the heat insulating material 3 rises and a gap is formed between the heat insulating material 3 and the heat insulating effect is reduced. There is.

  By the way, although the gist of the outer heat insulating structure is that the outside air temperature is not transmitted to the housing wall 1, in the case of the prior art, it is transmitted to the support bolt 2 and the reinforcing metal fitting 6 through the exterior material 5 and the trunk edge 4. The outside air temperature is not only transmitted to the housing wall 1 via the support bolt 2 and the hypotenuse 10c, but is also transmitted to the housing wall 1 via the mounting portion 9, and the mounting portion 9 and the hypotenuse 10c are connected at the bottom 10a. Therefore, there is a problem of facilitating such heat conduction.

  Further, the conventional reinforcing metal fitting 6 is formed by forming a cylindrical mounting portion 9 by bending a metal plate, forming a support plate 10 by punching the metal plate, and then fixing both by welding. However, there is a problem in that the production is complicated and not suitable for mass production, and the quality varies.

  In order to solve the above-described problems, the present invention provides an outer heat insulating method and a bolt reinforcing metal fitting which are fundamentally improved processes of the prior art. That is, in the prior art, the heat insulating material 3 is pressed against the housing wall 1 in a state where the reinforcing metal fitting 6 is attached to the support bolt 2 of the housing wall 1, and the reinforcing metal fitting 6 is immersed in the heat insulating material 3. In contrast to the above-mentioned various problems, outside of the present invention, the heat-insulating material is laid on the frame wall before attaching the reinforcing bracket to the support bolt by reversing the steps in the front and back. After that, the reinforcing metal fitting is inserted into the laid heat insulating material from the outdoor side and is attached to the support bolt. In addition, the bolt reinforcing bracket of the present invention is configured to be able to suitably enter from the outdoor side to the heat insulating material previously laid, thereby making it possible to perform the outer heat insulating method of the present invention satisfactorily. Features.

  Therefore, the outer heat insulation method of the present invention is configured as a first means in the outer heat insulating structure of a building in which an exterior material is attached in a state where a heat insulating material is interposed on the outdoor side of the wall of the wall. Fixing a support bolt projecting substantially vertically from the housing wall; and disposing the heat insulating material along the housing wall, and passing the support bolt through the heat insulating material, thereby attaching the heat insulating material to the housing wall. And a step of reinforcing the support bolt using a reinforcing metal fitting provided with a leg portion extending from the head portion having the insertion hole for the support bolt toward the housing wall; From the state where the legs of the reinforcing metal fittings are directed to the heat insulating material on the outside and the insertion holes are arranged on the extension lines of the support bolts, the legs are made to enter the heat insulating material until the tips of the legs come into contact with the housing wall Advance the reinforcement bracket and insert the hole A step of fixing a reinforcing metal fitting by screwing a fastening nut to the inserted support bolt, and a step of attaching an exterior material to the front end of the support bolt projecting to the outside of the heat insulating material via a trunk edge It is in the point which consists of.

  Further, the outer heat insulation method of the present invention is configured as the second means in the outer heat insulating structure of a building in which an exterior material is attached in a state where a heat insulating material is interposed on the outdoor side of the wall of the wall. Fixing a support bolt projecting substantially vertically from the housing wall, disposing a first heat insulating material along the housing wall, and passing the support bolt through the first heat insulating material. A step of laying a heat insulating material on the wall surface of the frame wall, and a step of reinforcing the support bolt using a reinforcing metal fitting having a leg portion extending from the head having the insertion hole for the support bolt toward the frame wall ; From the state in which the legs of the reinforcing metal fitting are directed to the first heat insulating material on the outdoor side of the first heat insulating material and the insertion holes are arranged on the extension lines of the support bolts, by allowing the legs to enter the first heat insulating material, Reinforce until the tip of the leg is supported by the frame wall A step of fixing the reinforcing metal fitting by screwing a fastening nut to a support bolt inserted through the insertion hole, and disposing a second heat insulating material on the outdoor side of the first heat insulating material; A step of laminating the second heat insulating material on the first heat insulating material by penetrating the second heat insulating material through a tip end portion of a support bolt projecting to the outdoor side of the reinforcing metal fitting, and then the second heat insulating material. And a step of attaching an exterior material to the front end of the support bolt projecting to the outside of the door through the trunk edge.

  The bolt reinforcing metal fitting according to the present invention is configured as a means, and is inserted by being bent from the head having an insertion hole substantially at the center and spaced apart in the circumferential direction of the head. A plurality of legs extending in the axial direction of the hole, and the head and the legs are integrally provided by press-molding a single metal plate material.

  At this time, a flat plate portion for holding the heat insulating material from the outdoor side is provided at the head of the reinforcing metal fitting so that the heat insulating material is sandwiched between the flat plate portion and the housing wall in a state where the reinforcing metal fitting is fixed to the support bolt. It is composed.

  The legs of the reinforcing metal fittings have a cantilever structure extending from a base part connected to the head part to a free end, and the width w1 of the base and the width w2 of the front end are w1> w2. By forming, a taper edge which tapers the leg is provided on at least one side edge of both side edges.

  Further, the legs of the reinforcing metal fittings are arranged so that the width w is directed in the circumferential direction of the head, and are configured to incline outwardly from the base toward the tip with respect to the axis of the insertion hole. .

  In the case of the prior art, the reinforcing metal fitting 6 is first attached to the support bolt 2 and then the heat insulating material 3 is laid while being pressed against the reinforcing metal fitting 6, so that the heat insulating material 3 is preferably in close contact with the entire surface of the frame wall 1. However, according to the outer heat insulation method according to the first and second aspects of the present invention, the housing wall in which the support bolts 22 are projected before the reinforcing metal fittings 27 are mounted is difficult. Since the heat insulating material 23 is laid toward 21, there is an effect that the heat insulating material 23 can be easily laid in close contact with the entire surface of the housing wall 21 simply by penetrating the support bolt 22, and the heat insulating material. After laying 23, the leg 34 of the reinforcing metal member 27 is inserted into the heat insulating material 23 until the tip 38 comes into contact with the housing wall 21 while being inserted into the heat insulating material 23. Creates a cavity such as a nest inside Capacity is low, there is the advantage that can provide an excellent external insulation structure insulating effect.

  At this time, according to the outer heat insulating method according to the second aspect of the present invention, even when the surface of the first heat insulating material 23 a is recessed by the head 33 of the reinforcing metal fitting 27, the outer side of the first heat insulating material 23 a. Is covered with the second heat insulating material 23b, there is an effect that a perfect heat insulating layer can be formed with respect to the thickness (T1 + T2) of the two heat insulating materials 23a and 23b.

  The reinforcing metal fitting 27 of the present invention can form the reinforcing metal fitting 27 having the head 33 and the leg 34 integrally by press-molding a single metal plate material M. In the case of an outer heat insulation method that requires a metal fitting, the reinforcing metal fitting 27 can be provided at low cost, and the construction cost can be reduced.

  In addition, since the reinforcing metal member 27 can easily form the flat plate portion 35 on the head 33 by press-molding the metal plate material M, the heat insulating material 23 (or the second insulating material 23) can be provided with the reinforcing metal member 27 attached to the support bolt 22. One heat insulating material 23a) can be pressed from the outdoor side and can be sandwiched between the flat plate portion 35 and the housing wall 21, and the heat insulating material 23 (or the first heat insulating material 23a) can be securely fixed so as not to float. There is.

  Furthermore, by providing the taper edge 39 in which the leg part 34 of the reinforcing metal fitting 27 is tapered, the work of making the leg part 34 pierce and enter the heat insulating material 23 (or the first heat insulating material 23a) becomes easy. In addition, it is possible to prevent the formation of a cavity such as a nest in the heat insulating material 23 after the reinforcing metal fitting 27 is attached.

  And since it press-molds the metal plate raw material M, it is possible to provide the rib 40 freely in the leg part 34, Moreover, the head 33 and the leg part 34 which were each shape | molded integrally from the metal plate, respectively. Regarding the configuration, since the leg portion 34 is configured so that the width w is arranged in the circumferential direction of the head portion 33, the leg portion 34 can be configured to incline outwardly, thereby supporting the leg portion 34. A structure that suitably opposes the moment in the bending direction of the bolt 22 is realized.

  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. 1, in the “outside heat insulating structure” of the present invention, the base end 22 a of the support bolt 22 is embedded in the building wall 21 of the building, and the heat insulating material 23 is laid on the outdoor side of the building wall 21. The exterior material 26 is attached to the outside of the heat insulating material 23 via the support 24 and the trunk edge 25. In the case of the illustrated embodiment, the heat insulating material 23 has a first heat insulating material 23a having a thickness T1 (for example, T1 = 100 mm) and a thickness T2 (for example, T2 = 25 mm) so that T1> T2. The first heat insulating material 23a is laid on the outdoor wall surface of the housing wall 21, and the second heat insulating material 23b is laid in a stacked manner on the first heat insulating material 23a.

  In the case of the illustrated example, the first heat insulating material 23a and / or the second heat insulating material 23b constituting the heat insulating material 23 are glass wool mainly composed of glass fiber, rock wool or stone wool mainly composed of slag fiber, or Although comprised by other fibrous materials, in this invention, both or one of the 1st heat insulating material 23a and the 2nd heat insulating material 23b is not restricted to a fiber type thing, For example, a plate-shaped foaming material etc. It is also possible to use something like this.

The support bolt 22 is reinforced by a reinforcing metal fitting 27, and a support tool 24 is fixed to the tip 22 b of the support bolt 22 penetrating the heat insulating material 23 via fixing nuts 28 and 29. A screw 30 is attached to the support tool 24. Thus, the body edge 25 is fixed, and the exterior material 26 is fixed to the body edge 25. In the case of the illustrated example, the support 24 is configured such that the position of the support bolt 22 in the radial direction can be adjusted by a long hole 31 penetrating in the vicinity of one end.

(Structure of reinforcing bracket)
As shown in FIGS. 2 to 5, the reinforcing bracket 27 is bent from the head portion 33 formed with an insertion hole 32 in the substantially central portion and spaced from the head portion 33 in the circumferential direction of the head portion 33. Thus, a plurality of (three in the illustrated example) leg portions 34 extending in the direction of the axis X of the insertion hole 32 are provided.

  As shown in FIGS. 4B and 5B, the head portion 33 of the reinforcing metal fitting 27 has a flat plate portion 35 orthogonal to the axis X and bends the periphery of the flat plate portion 35. A peripheral wall 36 is provided, and the overall shape is formed substantially in the shape of a dish or bowl.

  As shown in FIG. 3 (B), the leg portion 34 of the reinforcing bracket 27 has a cantilever structure extending from a base portion 37 connected to the peripheral wall 36 of the head portion 33 to a free end 38. By forming the width w1 of the base portion 37 and the width w2 of the distal end 38 so that w1> w2, the leg portion 34 is tapered on at least one side edge (both side edges in the illustrated example) of both side edges. A tapered edge 39 is provided.

  Further, as shown in FIG. 3A, the leg portion 34 of the reinforcing metal member 27 is disposed so that the width w extends in the circumferential direction of the head portion 33. Each leg portion 34 is formed with a rib 40 extending in the longitudinal direction. In the case of the illustrated example, the rib 40 is formed so as to be recessed from the inside of the leg portion 34 and bulge outward, but conversely, it is formed to be recessed from the outside of the leg portion 34 and bulge inward. Also good. Although not shown, similar ribs may be formed on the flat plate portion 35 of the head portion 33 of the reinforcing bracket 27. For example, a plurality of ribs arranged in the radial direction around the insertion hole 32 are provided. Can be provided.

  The reinforcing metal fitting 27 configured as described above is formed by press-molding a single metal plate material M that is die-cut from a metal plate such as an iron plate or steel plate as shown in FIG. The entire leg portion 34 is integrally formed. The press molding may be performed in one step at the same time, but the formation of the rib 40 and the bending of the leg portion 34 by the molding of the peripheral wall 36 of the head 33 can be performed in separate steps. Therefore, it is possible to provide various variations in which the shape of the reinforcing metal fitting 27 is changed within a press-moldable range. For example, as shown in FIG. 5C, the head 33 is formed in a substantially spherical shape. A reinforcing bracket 27 can also be provided.

(First embodiment of the outer heat insulation method)
The outer heat insulating structure shown in FIG. 1 is achieved by carrying out the first embodiment of the outer heat insulating method shown in FIGS.

  First, as shown in FIG. 6, support bolts 22 projecting substantially perpendicularly from the housing wall 21 are fixed to the housing wall 21. That is, the support bolt 22 protrudes toward the outdoor side of the housing wall 21 by burying the base end 22 a in the housing wall 21. The support bolt 22 may be provided simultaneously with the construction of the housing wall 21 (advanced), or may be attached via an anchor fitting after the construction of the housing wall 21 (retrofitting). Incidentally, the required number of the support bolts 22 is arranged at a predetermined interval from each other, corresponding to the position where the trunk edge 25 is attached. The protruding length of the support bolt 22 is completely equal to the thickness T of the heat insulating material 23 (the sum of the thickness T1 of the first heat insulating material 23a and the thickness T2 of the second heat insulating material 23b in the first embodiment). It is formed so that it can penetrate.

  In this state, the first heat insulating material 23 a is arranged along the housing wall 21, and the first heat insulating material 23 a is passed through the first heat insulating material 23 a so that the first heat insulating material 23 a is placed on the outer wall surface of the housing wall 21. Lay down. That is, in the related art described above, the reinforcing metal fitting is attached prior to the installation of the heat insulating material, whereas in the present invention, the first heat insulating material 23a is installed on the housing wall 21 without the reinforcing metal fitting 27 attached. The

  Therefore, as shown in FIG. 6, the reinforcing metal fitting 27 is arranged from the outdoor side of the laid first heat insulating material 23a, the leg 34 is directed to the first heat insulating material 23a, and the insertion hole 32 of the head 33 is supported. As shown by the arrow F, it is advanced from the posture positioned on the extension line of the bolt 22 while being embedded in the first heat insulating material 23a. That is, as shown in FIG. 6, when the tip 34 b of the leg 34 is pierced into the first heat insulating material 23 a and advanced toward the housing wall 21, the insertion hole 32 of the head 33 is shown. Since the tip 22b of the support bolt 22 is inserted through the reinforcing bolt 27, the reinforcing bracket 27 is moved forward until the tip 38 of the leg 34 is subsequently supported by the housing wall 21. At this time, the leg portion 34 enters while the material of the first heat insulating material 23 a is preferably pushed away or cut by the tapered edge 39.

  Although not shown, a knife edge may be formed on the taper edge 39 in order to improve the entry function of the leg 34 with respect to the first heat insulating material 23a. In addition, the number of the leg portions 34 may be four or more with an interval in the circumferential direction of the head 33. In this case, there is a possibility that the tip 38 of the leg portion 34 may not land on the frame wall 21. For this reason, it is preferable to use three at regular intervals in the circumferential direction of the head 33 as shown in the figure.

  By the way, when the leg part 34 of the reinforcing metal fitting 27 enters and penetrates the first heat insulating material 23 a, when the first heat insulating material 23 a is made of a fibrous cotton-like material, the fiber fragment is the tip of the leg part 34. 38, and there is a possibility that a fiber fragment is sandwiched between the tip 38 of the leg 34 and the housing wall 21. Accordingly, as shown in FIG. 7, a cylindrical jig 41 is applied to the head 33 of the reinforcing metal fitting 27, and a hammer or the like is used to strike as shown by an arrow H, so that the fiber from the tip 38 of the leg 34 is obtained. It is preferable to eliminate the fragments.

  After setting the reinforcing bracket 27 in this manner, as shown in FIG. 8, the head 33 is fastened by screwing the fastening nut 42 onto the support bolt 22 inserted from the insertion hole 32 of the reinforcing bracket 27. Then, the reinforcing bracket 27 is fixed to the support bolt 22.

  In a state where the reinforcing metal fitting 27 is attached to the support bolt 22, the first heat insulating material 23 a is pressed by the flat plate portion 35 of the reinforcing metal fitting 27 and is sandwiched between the flat plate portion 35 and the frame wall 21. The peripheral wall 36 of the head 33 is held so as to bite the surface of the first heat insulating material 23a. Accordingly, the first heat insulating material 23a is preferably laid on the entire surface of the housing wall 21 without generating a hollow nest or the like, and cannot be moved in either the plane direction or the outdoor direction of the housing wall 21. Fixed.

  The support bolt 22 is strongly reinforced and supported by a reinforcing metal fitting 27 integrally coupled by a fastening nut 42, and can suitably support the load of the trunk edge 25 and the exterior member 26 to be attached in a later process. At this time, the moment in the bending direction of the support bolt 22 can be suitably countered by the leg portion 34 inclined outwardly from the head 33 toward the tip. In this regard, in order to sufficiently reinforce the support bolt 22, it is necessary to apply the fastening force of the fastening nut 42 to the head 33, and a considerable load acts on the leg 34. Since the leg portion 34 is reinforced by the rib 40 itself, there is no fear of buckling due to the fastening force of the fastening nut 42, and the leg portion 34 has a sufficiently durable structure.

  After attaching the reinforcing metal fittings 27 to all the support bolts 22 in the construction area, as shown in FIG. 8, the second heat insulating material 23b is disposed outside the first heat insulating material 23a, and the reinforcing metal fitting 27 is arranged outside the outdoor area. The 2nd heat insulating material 23b is laminated | stacked on the 1st heat insulating material 23a by making the front-end | tip part of the protruding support bolt 22 penetrate the 2nd heat insulating material 23b. Thereafter, as shown in FIG. 1, the support 24 is fixed to the front end 22 b of the support bolt 22 that penetrates the second heat insulating material 23 b and protrudes to the outdoor side via fixing nuts 28 and 29. After fixing the body edge 25 to the body edge 25 with the screws 30, the exterior material 26 is fixed to the body edge 25 to complete the outer heat insulating structure.

(Accessory parts)
FIG. 9 shows a flange 44 that prevents the adjacent corner portions 43 of the heat insulating material 23 (the first heat insulating material 23a and / or the second heat insulating material 23b) laid on the housing wall 21 from being turned over. In the case of the illustrated example, the flange 44 is formed by bending a metal plate material that has been die-cut from a single metal plate, but may be formed by injection molding with a synthetic resin material. The rod 44 has a leg portion 46 suspended from a plate-shaped head portion 45, and a sawtooth-shaped retaining means 47 is provided on the leg portion 46.

  Then, it is comprised so that the adjacent corner part 43 may be hold | suppressed from the surface by the head 45 by inserting the leg part 46 with respect to the adjacent corner part 43 of the heat insulating material 23 currently laid. The flange 44 may be used for pressing the surface of the joint edge portion 48 of the heat insulating material 23 in addition to the adjacent corner portion 43.

(Second embodiment of outer heat insulation method)
The outer heat insulating structure of the first embodiment described above with reference to FIG. 1 has described the composite laminated structure using the first heat insulating material 23a and the second heat insulating material 23b with respect to the heat insulating material 23, but the outer heat insulating structure of the present invention. As in the second embodiment shown in FIG. 10, it is also possible to adopt a configuration using a single-layer heat insulating material 23 having a thickness T.

  The outer heat insulating method for constructing the outer heat insulating structure of the second embodiment is the same as that in which the first heat insulating material 23a is laid on the housing wall 21 provided with the support bolts 22 protruding from the first embodiment described above. A single-layer heat insulating material 23 is laid by the method, and then the reinforcing metal fitting 27 is made to enter the single-layer heat insulating material 23 by the same method as the first metal heat insulating material 23a is made to enter the first heat insulating material 23a in the first embodiment. Then, the support bolt 22 is fixed with a fastening nut 42. Thereafter, the method of attaching the support 24, the trunk edge 25, and the exterior material 26 is the same as in the first embodiment.

  Since the outer heat insulating construction method of the present invention is configured to lay the heat insulating material 23 first and then attach the reinforcing metal fitting 27, in the case of the first embodiment, as shown in FIG. The cavity S is generated corresponding to the portion pressed by the reinforcing bracket 27. In this regard, in the case of the first embodiment, since the second heat insulating material 23b covers the hollow portion S, there is an advantage that an outer heat insulating layer having a predetermined thickness T1 + T2 can be secured.

  On the other hand, in the case of the second embodiment, as shown in FIG. 10, the heat insulating material 23 leaves the cavity S generated in the portion pressed by the reinforcing metal fitting 27 as it is, so that it is compared with the first embodiment. Then, it is inferior in that a perfect outer heat insulating layer cannot be secured. However, as compared with the prior art, even in the case of the second embodiment, the heat insulating material 23 is laid on the entire wall surface of the housing wall 21, and a nest as in the prior art does not occur at the location facing the housing wall 21. The outer heat insulating structure which is at least much better than the prior art is possible.

It is a longitudinal cross-sectional view which shows 1st Embodiment of the outer heat insulation structure which concerns on this invention. The preferable example of the reinforcement metal fitting for bolts used for the outer heat insulation construction method of the present invention is shown, (A) is a top view and (B) is a front view. The reinforcing metal fitting is shown, (A) is a bottom view, (B) is a rear view. The reinforcement metal fitting is shown, (A) is a right view, (B) is an AA line sectional view. The reinforcing metal fittings are shown, (A) is a plan view showing the unfolded state of the metal plate material before press forming, (B) is a front view showing a partial cross section of the press-formed reinforcing metal fittings, and (C). It is a front view which shows another specific example of a reinforcement metal fitting. 1 is a cross-sectional view showing a first embodiment of an outer heat insulating method according to the present invention, and a step of allowing a reinforcing metal fitting to enter the first heat insulating material after laying the first heat insulating material on the frame wall. In 1st Embodiment of an outer heat insulation construction method, it is sectional drawing which shows the process of hitting the reinforcement metal fitting which penetrated the 1st heat insulating material. In 1st Embodiment of an outer heat insulation construction method, it is sectional drawing which shows the process of fixing a reinforcement metal fitting to a support bolt with a fastening nut, and continuing laying the 2nd heat insulating material. It is a perspective view which shows the bag as an accessory used for the outer heat insulation structure which concerns on this invention. It is a longitudinal cross-sectional view which shows 2nd Embodiment of the outer heat insulation structure which concerns on this invention. It is a longitudinal cross-sectional view which shows the outer heat insulation structure which concerns on a prior art. In the prior art, a method of laying by pressing a heat insulating material against a reinforcing metal fitting is shown. (A) is a cross-sectional view showing a state in which the reinforcing metal fitting is cut and entered into the pressed heat insulating material, and (B) is a pressing operation. It is sectional drawing which shows a state in case a reinforcement metal fitting does not enter into the heat insulating material favorably.

Explanation of symbols

21 Housing Wall 22 Support Bolt 22a Support Bolt Base End 22b Support Bolt Tip 23 Heat Insulating Material 23a First Heat Insulating Material 23b Second Heat Insulating Material 24 Supporting Tool 25 Body Edge 26 Exterior Material 27 Reinforcing Bracket 28, 29 Fixing Nut 32 Insertion Hole 33 Head 34 Leg 35 Flat Plate 36 Peripheral Wall 37 Base 38 Tip 39 Tapered Edge 40 Rib 42 Fastening Nut

Claims (6)

In the outer heat insulating structure of the building, in which the exterior material is attached with the heat insulating material interposed on the outdoor side of the frame wall,
Fixing the support bolt (22) protruding substantially vertically from the housing wall (21) to the housing wall;
A heat insulating material (23) is disposed along the housing wall (21), and the heat insulating material is passed through the support bolt (22), whereby the heat insulating material (23) is attached to the wall surface of the housing wall (21). Laying process,
Support bolt using a reinforcing bracket (27) provided with a leg (34) extending from the head (33) having the insertion hole (32) of the support bolt (22) toward the housing wall (21) Regarding the step of reinforcing (22); on the outdoor side of the heat insulating material (23), the leg (34) of the reinforcing metal fitting (27) is directed to the heat insulating material and the insertion hole (32) is arranged on the extension line of the support bolt. From the state, by moving the leg portion (34) into the heat insulating material (23), the reinforcing metal fitting (27) is advanced until the tip of the leg portion abuts the housing wall (21), and the insertion hole (32) Fixing the reinforcing bracket (27) by screwing the fastening nut (42) to the inserted support bolt (22);
Thereafter, a step of attaching the exterior material (26) to the front end portion of the support bolt (22) protruding to the outdoor side of the heat insulating material (23) via the trunk edge (25). Outside insulation method. In the outer heat insulating structure of the building, in which the exterior material is attached with the heat insulating material interposed on the outdoor side of the frame wall,
Fixing the support bolt (22) protruding substantially vertically from the housing wall (21) to the housing wall;
A first heat insulating material (23a) is disposed along the housing wall (21), and the first heat insulating material (23a) is passed through the housing wall by passing the support bolt (22) through the first heat insulating material. Laying on the wall of (21);
The support bolt is attached using a reinforcing metal fitting (27) in which a leg (34) extends from a head (33) having an insertion hole (32) of the support bolt (22) toward a housing wall (21). Regarding the step of reinforcing; the leg part (34) of the reinforcing metal fitting (27) is directed to the first heat insulating material on the outdoor side of the first heat insulating material (23a), and the insertion hole (32) is arranged on the extension line of the support bolt. From the state, by moving the leg portion (34) into the first heat insulating material (23a), the reinforcing metal fitting (27) is advanced until the tip of the leg portion is supported by the frame wall (21), and the insertion hole Fixing the reinforcing bracket (27) by screwing the fastening nut (42) onto the support bolt (22) inserted from (32);
A second heat insulating material (23b) is disposed on the outdoor side of the first heat insulating material (23a), and a tip end portion of a support bolt (22) protruding to the outdoor side of the reinforcing metal fitting (27) on the second heat insulating material. By laminating the second heat insulating material (23b) to the first heat insulating material (23a),
And a step of attaching the exterior material (26) to the front end of the support bolt (22) protruding from the outdoor side of the second heat insulating material (23b) via the trunk edge (25). Outside insulation method. Reinforcing metal fittings (27) in the outer heat insulation method according to claim 1 or 2,
A head (33) having an insertion hole (32) in the substantially central portion, and an axial direction (X) of the insertion hole (32) by being bent from the head with a space in the circumferential direction of the head. A bolt reinforcing bracket comprising: an extending leg (34); and the head (33) and the leg (34) are integrally provided by press-molding a single metal plate material.   A flat plate portion (35) for pressing the heat insulating material from the outdoor side is provided on the head (33) of the reinforcing metal fitting (27), and the heat insulating material is fixed to the support bolt (22) in a state where the heat insulating material is fixed to the flat plate portion. 4. The bolt reinforcing bracket according to claim 3, wherein the bolt reinforcing bracket is configured to be sandwiched between (35) and a housing wall (21).   The leg part (34) of the reinforcing metal fitting (27) has a cantilever structure extending from a base part connected to the head part (33) to a free end, and has a base width w1 and a front end width w2. The taper edge (39) tapering the leg (34) is provided on at least one side edge of both side edges by forming w1> w2. 4. The bolt reinforcing bracket according to 4.   The leg part (34) of the reinforcing metal fitting (27) is arranged so that the width w is directed in the circumferential direction of the head part (33), and is directed from the base part to the tip with respect to the axis (X) of the insertion hole (32). 6. The bolt reinforcing bracket according to claim 3, wherein the bolt reinforcing bracket is configured to incline outwardly.

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