JP3623929B2 - Fixing structure of metal spacer and outer wall finishing material used for metal base material for outer wall finishing material - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention includes a metal spacer exterior wall finishing material for a metallic base material in the low-rise building steel frame and wooden, those related to the fixed structure of the outer wall finishing material. In the following description, the terms “base material” and “ventilation trunk edge” are used. Here, “base material” is used to collectively refer to the trunk edge disposed inside the outer wall finishing material. Further, the ventilating trunk edge refers to a trunk edge of a steel hollow square section through which air can flow, and is used as a typical example of the base material. Furthermore, the trunk edge generally refers to a horizontal member for attaching a siding board or board to a wall, but in the present invention, it is not limited to a horizontal arrangement, but a vertical arrangement as shown in the figure. Is also called the trunk edge.
[0002]
[Prior art]
Conventionally, in a low-rise building such as a steel frame or a wooden structure, a frame is constructed by assembling columns and beams, an inner wall is attached to the frame, a structural frame is constructed, and an outer wall finishing material is attached to the structural frame. In some cases, a heat insulating material may or may not be interposed between the structural frame and the outer wall finishing material, but in any case, a base material such as a ventilator rim is provided on the back of the outer wall finishing material. The outer wall finishing material is fixed to the structural frame via the base material. As the base material, a base material made of wood (trunk edge) or a base material made of lightweight shaped steel (trunk edge) is used, but each has the following advantages and disadvantages. FIG. 15 shows an example in which the outer wall finishing material 11 is fixed to the pillar material 2 with fasteners 6 and 12 through a base material (body edge) 9 made of wood.
[0003]
(A) Advantages and disadvantages when the base material of the finishing material is wood: (a) Advantages: Good workability. That is, (1) all the member surfaces (four surfaces) can be joined, and (2) a nail can be joined.
(B) Disadvantages; (1) Deformation of the wall surface due to aging of the wood (twist, warp, crack, etc.). (2) From the viewpoint of urban disaster prevention, it is not preferable to use wood as the base of the outer wall finishing material that may spread fire. Even if the outer wall finishing material is composed of a non-combustible material, if the wood base material spreads due to fire spreading, the outer wall finishing material falls off and the structural frame is exposed to the flame. If the structural enclosure is wood, it will cause further fire spread.
[0004]
(B) Advantages and disadvantages when the base material of the outer wall finishing material is a lightweight section steel (a) Advantages; (1) Since there is no secular change of the member, the wall surface is not deformed. (2) The steel base material does not burn. Therefore, if the outer wall finishing material is made of a noncombustible material, the risk of fire spread is considerably reduced even if the structural frame is made of wood.
(B) Cons: Workability is not better than wood. That is, (1) Since welding or a joint surface is limited, it must be a two-way bolt or tapping screw joint through a hardware. (2) Electrodeposition coating or rust prevention treatment is required.
[0005]
There are advantages and disadvantages in each of (A) and (B). Therefore, “The material used for the base material is a metal material (steel material or aluminum material), and the workability is similar to that of a base material for exterior wall finishing material made of wood. The realization of a base material for finishing materials exists as a problem to be solved.
[0006]
Further, in the above-described steel frame and wooden low-rise buildings, in many cases, the buildings are made to have a heat insulating structure. The conventional mounting structure for attaching the outer wall finishing material to (1) impairs the heat insulation performance of the heat insulating material due to the base material, and (1) troubles in construction work. In this respect as well, [0005] “The base material used is metal (steel or aluminum), and the workability is as good as the base material for wood exterior wall finishing.” Realization of the base material for finishing material exists as a common issue to be solved [0007]
The contents of [0006] will be described in detail. First, there are two types of heat insulation structures: lining heat insulation structure and external heat insulation structure. To explain this in brief, the former is the one in which the heat insulating material is placed inside the structural housing, and the latter is the heat insulating material outside the structural housing. Is to be placed. In other words, in the lining thermal insulation structure, the structural frame that easily conducts heat penetrates the thermal insulation layer, so the part of the wall on the outside wall facing the structural frame is likely to be at the same temperature as the outside air temperature. In addition, since there is a portion below the dew point temperature on an indoor wall surface having a high temperature in winter, there is a drawback that indoor condensation occurs in the portion.
[0008]
In the external heat insulating structure, since the heat insulating material is located outside the structural housing, the structural housing is always the same as the indoor side, and no dew condensation occurs on the wall portion on the indoor side of the outer wall and inside the structural housing. On the other hand, a temperature difference equal to the difference between the outside air temperature and the room temperature occurs between the outdoor surface and the indoor surface of the heat insulating layer, but by inserting a moisture-proof airtight film between the structural housing and the heat insulating material, Since the humidity can always be equivalent to the outside air (the dew point temperature inside the heat insulating material is kept low), the heat insulating material does not condense and cause deterioration due to corrosion. From this point of view, for example, an outer insulation method tends to be frequently used in steel houses and the like.
[0009]
By the way, in the external heat insulation method, when the outer wall finishing material is joined to the structural housing using a fastener such as a screw or a nail, the base material presses the heat insulating material from above. In this case, since the heat insulating material is generally a material having no strength such as an inorganic fiber type or a foamed plastic type, the heat insulating material is pressed and deformed by the base material, and the heat insulating performance is lowered by reducing the cross-sectional area. At the same time, the uprightness of the base material cannot be ensured, and the beauty of the exterior wall finishing material is lost. For this reason, it is necessary to devise a structure or construction so that the base material does not deform the heat insulating material.
[0010]
Conventionally, in the external thermal insulation system, when joining the outer wall finishing material with a wooden base material to the structural frame, in order to prevent the base material from deforming and protecting the heat insulating material, cut the heat insulating material at the base material installation part. Although it lacks, in this construction method, the heat insulation function is impaired by the amount of the heat insulation material cut out. As another base material mounting structure, a hard plastic-type cylindrical spacer with a length corresponding to the thickness of the heat insulating material is placed in the heat insulating material, and the base material is installed through this cylindrical spacer, There is a construction method that prevents the material from being deformed by pressing the heat insulating material. However, in this case, due to the material of the cylindrical spacer, there is anxiety about the ability to retain the strength by joining the base material and the structural frame, and the plastic is a combustible material, so the outer wall finish when fire spread occurs. There is a concern about the collapse (or the spread of fire) of the structural frame due to the falling off of the material (incombustible material).
[0011]
[Problems to be solved by the invention]
As described above, in the case of mounting a base material for an outer wall finishing material on a structural frame in a steel or wooden low-rise building, the improvement of the base material from wood to metal and the base material Necessity of improvement in the structure for improving workability that becomes a neck in the case of being made of metal, and when the base material is attached to an external heat insulating material, the deformation prevention of the heat insulating material and the heat insulating performance It is an object of the present invention to improve the mounting structure of the base material for an outer wall finishing material that does not cause a decrease.
[0012]
[Means for solving problems]
In order to solve the above problems, the present invention is configured as follows.
[0013]
According to a first aspect of the present invention, there is provided an outer wall finishing material having a hollow rectangular cross section formed of a thin metal plate and having a plurality of working holes formed at a predetermined pitch on the front plate or the front plate and the rear plate of the hollow square shape. A spacer used when a metal base material is fixed to a structural housing using a fastener via a heat insulating material, and the spacer is made of a metal plate and has a length substantially the same as the thickness of the heat insulating material and A plurality of leg pieces to be placed on the heat insulating material and a fastener penetrating surface integrated with each leg piece are provided.
[0014]
A second invention is a metal spacer those of the first invention is characterized by comprising forming bent sheet metal plate of a predetermined shape on a side surface substantially U-shape.
[0015]
A third invention is characterized in that the leg piece in the metal spacer of the first or second invention is formed in a pointed shape.
[0016]
4th invention is characterized by the metal spacer as described in 1st-3rd invention consisting of a thin plate steel plate or an aluminum plate.
[0017]
The fifth invention is characterized in that the thin plate-plated steel plate or the aluminum plate in the fourth invention has a plate thickness of 1.6 mm or less.
[0018]
In the sixth invention, the metal spacer legs in the first to fifth inventions are placed on the heat insulating material arranged on the outer surface of the structural housing, and the fastener penetration surface in the metal spacer is the first one. A fastener that is applied to the rear plate of the base material having a hollow cross-sectional shape according to the invention, and is inserted through the work hole of the base material, passes through the rear plate of the base material and the fastener penetration surface, and is applied to the structural housing. The fixed structure of the outer wall finishing material characterized by having been installed.
[0019]
According to a seventh aspect of the present invention, the engagement piece is foldable on the base end side surface of the leg piece of the metal spacer according to the first to sixth aspects, and the hollow angular shape according to the first aspect is provided. An engagement hole is opened at a position corresponding to the work hole on the rear plate of the base material, and the engagement hole of the metal spacer is inserted into the engagement hole, and the engagement hole is operated by a springback or the like. A fastener that is inserted into the front and back face plates of the base material through the working hole and the engagement hole, respectively, through the fastener penetrating surface of the metal spacer and is placed in the structural housing. To do.
[0020]
According to an eighth aspect of the present invention, a leg piece insertion hole for a metal spacer is formed in the rear plate of the hollow base material having a hollow cross section as described in the first aspect, and the work hole of the base material is passed through the insertion hole. The fastener for inserting the inserted metal spacer leg piece according to the first to fifth inventions into a heat insulating material arranged on the outer surface of the structural housing and inserting it through the work hole of the front plate of the base material, It is characterized in that it is placed in the structural frame through the fastener penetration surface of the metal spacer and the rear plate of the base material.
[0021]
[Action]
According to the first to eighth inventions, the outer wall is formed of a thin metal plate and has a hollow square cross section, and a plurality of work holes are formed at a predetermined pitch in the hollow square front plate or the front plate and the rear plate. When joining the base material for the finishing material to the structural frame with the fastener through the heat insulating material, the metal spacer is combined and joined, so it is not necessary to cut or deform the heat insulating material for the base material. In addition to preventing cross-sectional defects to the minimum and improving the heat insulation performance, it becomes possible to combine with an inorganic fiber-based heat insulating material that is easily deformed, thereby improving the fire prevention performance. Furthermore, since it is a metal spacer, it is reliable in terms of proof stress holding ability and incombustibility, and can be smoothly attached to the base material.
[0022]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[0023]
1 to 4 are broken perspective views showing a mounting structure of a structural housing and an outer wall finishing material in a steel house as Embodiment 1. FIG. In each figure, an inner wall material 4 such as a plaster board and a structural surface material 5 such as a plywood are naild or placed on both flanges 3 of a column material 2 such as a stud (intercolumn) made of thin steel plate steel or a wooden column material 2a. The structural housing 1 is constructed by fixing with a fastener (not shown) such as a drill screw. On the outside of the structural face material 5, a base material made of square steel having a hollow square cross section made of a thin plate-plated steel plate having a thickness of about 1.6 mm or less is provided through a moisture-proof and airtight film (not shown). 7 is arranged vertically or horizontally, and the ventilator edge 7 is fixed to the structural surface material 5 and the pillar material 2 or the wooden pillar material 2a with a fastener 6. In the present invention, in particular, a plurality of work holes 8 are formed at a predetermined pitch in the front plate 10 a of the hollow square ventilation trunk edge 7. Then, the ventilation trunk edge 7 is applied to the outside of the structural face material 5, and the fastener 6 is driven through the work hole 8. At this time, the fastener 6 passes through the rear plate 10 of the ventilating trunk edge 7 and is placed on the flange 3 of the steel column 2 or the wooden pillar 2a. It is fixed to the wooden pillar 2a.
[0024]
After fixing the ventilator rim 7 to the structural housing 1 as described above, the outer wall finish material 11 is applied to the ventilator rim 7 and a fastener 12 such as a drill screw is driven into the ventilator rim 7 to finish the outer wall. The material 11 is fixed to the structural housing 1 through the ventilator edge 7 to complete the low-rise building.
[0025]
The operation of the first embodiment is that the base material (that is, the ventilation drum edge) 7 of the outer wall finishing material 11 is a thin steel plate, so that it is lighter than the wooden drum and is not corroded. Due to the presence of 8, it is possible to perform construction with fasteners such as screws or nails as in the case of a wooden trunk. Moreover, since the thin plate-plated steel plate is used for the ventilation trunk edge 7, it can construct without rust prevention processing as well as nonflammability.
[0026]
The anticorrosion property of the trunk edge will be further described. As a specific example of the thin plate plated steel sheet used for the ventilator rim 7 having a high rust prevention effect of the present embodiment, a trade name Superdimer (Zn-11% Al-3% Mg-0.2% Si) according to the present applicant is used. Are suitable. This is a product obtained by adding Al, Mg, Si to the conventional hot dip galvanizing and improving the corrosion resistance by the combined effect of these additive elements. That is, in addition to the conventional Al addition, the trade name Super Zinc ( (Composition, Zn-5% Al-0.1% Mg) and trade name Daima Zinc (composition, Zn-11% Al-l3% Mg), Mg and the effect was clarified in addition to the compound addition, Rust prevention effect is enhanced. Si enhances the workability of the plating layer containing Al, and at the same time, enhances the corrosion inhibition effect by the combined action with Mg. Furthermore, the corrosion resistance of Superdimer, as seen from the rate of reduction of the plating layer in the salt spray test, is extremely high, at least 15 times that of the hot-dip galvanized steel sheet and 5-8 times that of the hot-dip zinc-5% aluminum alloy-plated steel sheet. . In addition, an aluminum plate or the like can be used as the corrosion resistant metal in the present invention.
[0027]
5 to 7 show a second embodiment, FIG. 5 is a cutaway perspective view showing a structure for attaching a structural housing and an outer wall finishing material in a steel house of an external heat insulation system, and FIG. 6 is an enlarged cross-sectional view of a main part. 7 is a diagram of a metal spacer. In the second embodiment, in the structural housing 1 in which the inner wall material 4 and the structural face material 5 are fixed to both flanges 3 of the pillar material 2, the heat insulating material 14 is disposed outside the structural face material 5 via the moisture-proof and airtight film 13. Further, from the top of the protective sheet 15 disposed on the surface of the heat insulating material 14, the same ventilation trunk edge 7 as shown in the first embodiment is applied, and the fastener 6 is driven to construct the ventilation trunk edge 7. It adheres to the housing 1.
[0028]
As the material of the heat insulating material 14, a heat insulating material having no strength such as inorganic fiber type (asbestos) or foam plastic type (styrene foam) is generally used. When joining with the fastener 6, a spacer is necessary so that the heat insulating material 14 is not deformed. From this viewpoint, in the second embodiment, a metal spacer 16 is previously placed on the heat insulating material 14, and the ventilator edge 7 is formed. The heat insulating material 14 is not deformed by being pushed by the ventilator rim 7 by being arranged at the position of the metal spacer 16.
[0029]
In the second embodiment, the metal spacer 16 is formed by cutting a thin steel plate into a predetermined shape and bending it, and has a length substantially the same as the thickness of the heat insulating material 14 as shown in the figure, and is applied to the heat insulating material 14. A plurality of leg pieces 17 to be provided and a fastener penetrating surface 18 integral with each leg piece 17 are provided to form a substantially U-shaped side surface. The leg piece 17 has a sharpened tip by forming a notch 19 in a mountain shape on a metal plate so that the leg piece 17 can be easily placed on the heat insulating material 14. In addition, the insertion hole 19a may or may not be provided in the fastener penetration surface 18. Furthermore, the thin steel plate which is the material of the metal spacer 16 may use a trade name Superdimer, an aluminum plate, etc., which is the same lightweight as the ventilator edge 7 and has a high corrosion resistance.
[0030]
In the second embodiment, when the metal spacer 16 is placed on the heat insulating material 14, the tips of the leg pieces 17 abut against the structural face material 5 (that is, the moisture-proof and airtight film 13), and the fastener penetration surface 18 and the surface of the heat insulating material 14. Are aligned at the same height, and the rear plate 10 of the ventilator rim 7 is applied to the fastener penetration surface 18. In the same manner as in the first embodiment, the fastener 6 is driven through the work hole 8 of the ventilation trunk edge 7. At this time, the fastener 6 passes through the rear plate 10 of the ventilating trunk edge 7 and the fastener through surface 18 of the metal spacer 16 and is placed on the flange 3 of the columnar column 2 or the wooden column 2a. The heat insulating material 14 is not deformed by the pressing force of the air vent edge 7, and therefore the heat insulating material 7 is formed without the deterioration of the heat insulating performance due to the deformation of the heat insulating material 14 or the appearance of the outer wall finishing material 11. It is fixed to the material 2 or the wooden pillar 2a.
[0031]
8 to 10 show the third embodiment. In the third embodiment, the coupling structure between the ventilator edge 7 and the metal spacer 16a is different. That is, in the second embodiment, since the rear plate 10 of the ventilator rim 7 does not have a hole, the ventilator rim 7 and the fastener penetration surface 18 of the metal spacer 16a can be integrated only by placing the fastener 6. It was. On the other hand, in the third embodiment, the rear plate 10 of the ventilator rim 7 is also provided with an engagement hole 20 at a position corresponding to the front work hole 8, and correspondingly, a metal spacer An engagement piece 21 that can be engaged with the engagement hole 20 by the action of a spring back is also integrally formed at the base end of the leg piece 17 of 16a.
[0032]
With further described, in the embodiment 3, the length h of the opposing two sides of the operation hole 8 of the ventilation furring strip 7, the length h ₁ of the opposed two sides of the engagement hole 20 of the vent furring strip 7, a metallic spacer The length h ₂ of at least two opposing sides of the rectangular fastener penetrating surface 18 in 16a is provided in a dimensional relationship of h> h ₂ > h ₁ .
[0033]
From the above dimensional relationship, as shown in FIG. 9, a metal spacer 16 a can be inserted through the work hole 8 from the front of the ventilation barrel edge 7, and the leg piece 17 can be driven into the heat insulating material 14 through the engagement hole 20. . At this time, the end edge portion of the fastener penetrating surface 18 is engaged with the side edge of the engagement hole 20 due to the dimensional relationship of dimension h ₂ > h ₁ . Further, the engagement piece 21 in the metal spacer 16a has a triangular shape so that the leg piece 17 is expanded in diameter as shown in FIG. 9, and the engagement piece top portion 21a and the lower surface of the fastener penetration surface 18 are formed. A gap 22 that is substantially the same as the thickness of the rear plate 10 of the ventilator rim 7 is formed therebetween. Further, the engagement piece 21 is in the same plane as the leg piece 17 at the time of punching and forming the thin steel plate shown in FIG. 11, but when it is bent and formed into a lateral U shape as shown in FIG. It is slightly offset toward the inner side when viewed from the inner edge of the engagement hole 20 of the ventilating cylinder edge 7 through the line 23.
[0034]
Therefore, as shown in FIG. 9, when the leg piece 17 of the metal spacer 16a is pushed in by the heat insulating material 14 through the engagement hole 20 of the ventilation trunk edge 7, the inclined surface of the engagement piece 21 slightly offset is a guide and Thus, the engagement piece 21 is bent further inwardly against the elasticity by the inner edge of the engagement hole 20 and passes through the engagement hole 20, and the triangular engagement piece top portion 21 a is engaged with the engagement hole 20. After passing, the engagement piece 21 returns to the original state of being slightly offset by the action of the spring back, and as shown in FIGS. 9 and 10, the engagement hole of the ventilation drum edge 7 located in the gap 22 The ventilator edge 7 and the metal spacer 16a can be integrated by sandwiching the outer edge of 20 between the engagement piece top 21a and the fastener through surface 18.
[0035]
After the ventilation trunk edge 7 and the metal spacer 16a are integrated, the fastener 6 is driven through the work hole 8 and the fastener insertion hole 19a of the fastener penetration surface 18, and the ventilation trunk edge 7 is fixed to the structural housing 1. . At this time, there is no problem that the heat insulating material 14 is pushed by the ventilator edge 7 and deformed by the action of the metal spacer 16a.
[0036]
13 and 14 show a fourth embodiment. The fourth embodiment is different from the third embodiment in the connection structure between the ventilator edge 7 and the metal spacer 16a. That is, in Embodiment 3, it is set as the structure which opens the leg piece insertion hole 25 of the metal spacer 16 in the rear surface board 10 of the ventilation trunk edge 7, and inserts the leg piece 17 in this.
[0037]
Therefore, in the fourth embodiment, the metal spacer 16 is passed through the work hole 8 of the ventilator rim 7, the both leg pieces 17 are inserted into the leg piece insertion holes 25 provided in the rear plate 10, and the leg pieces 17 are insulated. By placing the fastener 12 through the work hole 8 and penetrating the fastener through surface 18 of the metal spacer 16 and the rear plate 10 of the ventilation trunk edge 7 into the structural surface material 5 through the work hole 8, The ventilation trunk edge 7 can be fixed to the structural face material 5 without pressing and deforming the heat insulating material 14.
[0038]
In addition, as shown in FIGS. 8 and 13, the orientation of the leg pieces 17 when placing the metal spacers 16, 16 a may be placed in any position in the vertical arrangement and the horizontal arrangement, respectively. In the fourth embodiment shown in FIG. 13, the arrangement of the insertion holes of the two leg piece insertion holes 25 is changed in accordance with the arrangement of the leg pieces 17.
[0039]
【The invention's effect】
According to the present invention, a base material for an outer wall finishing material, which is constituted by a thin metal plate and has a hollow square cross section, and a plurality of work holes are opened at a predetermined pitch in the hollow square front plate or the front plate and the rear plate. When joining to the structural housing using the fastener and the heat insulating material, the metal spacer according to claim 1 is used for joining, so that the base material is a fastener without pressing and deforming the heat insulating material. The outer wall finishing material can be fixed to the structural frame, and the cross-sectional defect of the heat insulating material can be kept to a minimum to improve the heat insulating performance, and it can be combined with an easily deformable inorganic fiber heat insulating material, thereby improving the fire prevention performance. Furthermore, since it is a metal spacer, it is reliable in terms of proof stress holding ability and incombustibility, and can be smoothly attached to the base material.
[Brief description of the drawings]
FIG. 1A is a cutaway perspective view showing a mounting structure for a structural housing and an outer wall finishing material according to Embodiment 1 of the present invention, and FIG. 1B is a cross-sectional view taken along line AA in FIG.
The
2A is a cutaway perspective view of a first modification of FIG. 1, and FIG. 2B is a cross-sectional view taken along line BB of FIG.
3A is a cutaway perspective view of a second modification of FIG. 1, and FIG. 3B is a cross-sectional view taken along the line CC of FIG.
[Fig. 4]
(A) is a fracture | rupture perspective view of the 3rd modification of FIG. 1, (b) is DD sectional drawing of (a).
FIG. 5 is a cutaway perspective view showing a mounting structure of a structural housing and an outer wall finishing material in a steel house of an external heat insulation system as Embodiment 2 of the present invention.
6 is an enlarged cross-sectional view of a main part of FIG.
7A, 7B, 7C, and 7D are a side view, a front view, a plan view, and a bottom view of a metal spacer, respectively.
FIGS. 8A and 8B are broken perspective views showing a mounting structure for a structural housing, a heat insulating material, and an outer wall finishing material according to Embodiment 3 of the present invention. FIGS.
9 is an enlarged cross-sectional view of a main part of FIG. 8, showing a state in which a metal spacer is placed on a heat insulating material.
10 is an enlarged cross-sectional view of the main part of FIG. 8, showing a state where a fastener is further placed after a metal spacer is placed on a heat insulating material.
FIG. 11 is a plan view of a state in which a thin steel plate is punched into a predetermined shape when forming a metal spacer according to the third embodiment.
12A, 12B, 12C, and 12D are a side view, a front view, a plan view, and a bottom view of a metal spacer formed by bending the thin steel plate of FIG.
FIGS. 13A and 13B are broken perspective views showing a mounting structure for a structural housing, a heat insulating material, and an outer wall finishing material according to Embodiment 4 of the present invention. FIGS.
14 is an enlarged cross-sectional view of a main part of FIG.
FIG. 15 is a perspective view of an example in which a wooden trunk edge is fixed to a structural frame in a conventional building.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Structural frame 2 Column material 3 Flange 4 Inner wall material 5 Structural surface material 6 Fastener 7 Base material (ventilation trunk edge)
8 Working hole 9 Wooden base material 10 Rear panel 10a Front panel 11 Outer wall finishing material 12 Fastener 13 Moisture-proof and airtight film 14 Thermal insulation material 15 Protective sheet 16 Metal spacer 17 Leg piece 18 Fastener penetration surface 19 Notch 19a Insertion hole 20 Engagement hole 21 Engagement piece 22 Gap 23 Bending piece 25 Leg piece insertion hole

Claims (8)

A metal base material of the outer wall finishing material in which a plurality of work holes are opened at a predetermined pitch on the front plate or the front plate and the rear plate of the hollow square shape of the cross section, which is configured by a thin metal plate and having a hollow square shape in cross section. via a heat insulating material, and a spacer for use in securing the structural frame with a fastener inserted through the operation hole, the spacer is constituted by a metal plate, substantially the same length as the thickness of the heat insulating material And a plurality of leg pieces to be placed on the heat insulating material and a fastener penetration surface integrated with each leg piece. 2. The metal spacer according to claim 1 , wherein the metal spacer is formed by bending a thin metal plate having a predetermined shape into a substantially U-shaped side surface. The metal spacer according to claim 1 or 2 , wherein the leg piece in the metal spacer is formed in a pointed shape. The metal spacer according to any one of claims 1 to 3 , comprising a thin plate-plated steel plate or an aluminum plate. The thin plate-plated steel plate or aluminum plate according to claim 4 has a plate thickness of 1.6 mm or less. The leg piece of the metal spacer according to any one of claims 1 to 5 is placed on a heat insulating material arranged on an outer surface of the structural housing , and a fastener penetration surface in the metal spacer is set to claim 1. The fastener to be inserted from the working hole of the base material was placed on the structural body through the rear plate of the base material and the fastener penetrating surface. A fixing structure for exterior wall finishing materials. An engagement piece is formed on the base side surface of the leg piece of the metal spacer according to any one of claims 1 to 5 so as to be bendable, and after the hollow rectangular base material according to claim 1 An engagement hole is opened at a position corresponding to the work hole on the face plate, and the engagement piece of the metal spacer is inserted into the engagement hole and engaged with the engagement hole by the action of a spring back or the like. The outer wall finishing material is characterized in that fasteners inserted through the working holes and engagement holes respectively opened on the front and rear face plates of the base material are placed through the fastener penetration surface of the metal spacer and placed on the structural housing. Fixed structure. A leg piece insertion hole for a metal spacer is formed in the rear plate of the base material having a hollow cross-sectional shape according to claim 1, and is inserted into the insertion hole through the work hole of the base material. The fastener of the metal spacer according to any one of the above is inserted into a heat insulating material disposed on the outer surface of the structural housing and inserted through a work hole in the front plate of the base material. A fixing structure for an outer wall finishing material, wherein the structure penetrates a fastener penetration surface and a rear plate of a base material and is placed in a structural frame.

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