JP6546781B2 - Exterior material mounting structure - Google Patents

Description

  The present invention relates to an exterior material attachment structure for attaching an exterior material such as a curtain wall to a structural frame of a building.

  As an exterior material attachment structure which fixes exterior materials, such as a curtain wall which is a nonstructural member, to a structural frame of a building, a fixing plate (connection member) fixed to the exterior material and a fastening fastener fixed to the structural frame ( There is known a structure in which a mounting member is connected by a bolt (see Patent Documents 1 and 2 and Non-patent Document 1). The bolt is disposed at the back of the sheathing material through the fixing plate and the fixing fastener and fastened with a nut. In addition, the structural body to which the exterior material is attached is a main member for structural load resistance specified in the Building Standard Law Enforcement Order, and is a foundation, a foundation girder, a wall, a column, a diagonal member, a floor slab and the like.

Unexamined-Japanese-Patent No. 10-8610 Unexamined-Japanese-Patent No. 5-179737

Architectural Institute of Japan “Aseismatic Design and Construction Guidelines for Non-structural Members and their Commentary and Seismic Design and Construction Guidelines”, April 25, 2006, 2nd Edition, 2nd Edition, p. 632-634

A wind load always acts on non-structural members (curtain wall etc.), and after the building is completed, it is used as a connecting material (bolts and plates) for attaching non-structural members to the building frame until the building is dismantled In this case, a force for pushing the exterior material to the side of the structure (hereinafter referred to as positive pressure) and a force for pulling the exterior material to the outside of the building (hereinafter referred to as negative pressure) work in a complex manner.
In particular, when a typhoon or the like passes, strong wind blows on the exterior material for a long time, and positive pressure and negative pressure act on many times, and strong wind that pushes the exterior material to the structural housing acts In the vicinity of the angle of the building, there is a case where the wind direction is complexly changed at the corner and a building wind called separation flow is generated to try to peel off the exterior material. Therefore, in the case of the attachment joint of the exterior material in which the conventional fixing plate and the fixing fastener are connected by a bolt (hereinafter referred to as a connection bolt), the bolt shaft has a small cross-sectional area and a large amount of tensile force There is a risk of fatigue failure in order to act over.
Therefore, in order to prevent the fatigue failure of the connection bolt, it is necessary to reduce the stress level acting on the connection bolt, such as increasing the number of connection bolts or increasing the diameter of the connection bolt.
However, when the number of connection bolts is increased, the construction work increases, and it does not always work equally. In addition, if the member size is increased, the installation space of the mounting structure becomes large, and the design of the building and the usability on the indoor side deteriorate.
From this point of view, according to the present invention, without using the connecting bolt, the external load acting on the outer covering material is fixed between the fixing plate fixed to the outer covering material and the fixing fastener fixed to the structural housing. It is an object of the present invention to provide an exterior material attachment structure that can be transmitted to the vehicle. In the present specification, wind load and horizontal seismic load are defined as "external load" and will be described hereinafter.

  The present inventors do not use a connection bolt by joining the connecting member fixed to the exterior material and the mounting member fixed to the structural housing at the mounting joint of the non-structural member and the structural housing. In addition, it came to invent the exterior material attachment structure paying attention to the point which can transmit the external load which acts on the exterior material to a structure frame.

An exterior material attachment structure according to a first aspect of the present invention for solving the above-mentioned problems is an exterior material attachment structure for attaching a precast exterior material to a structural frame of a building, and an attachment member fixed to the structural frame A pair of left and right connection members fixed to the back surface of the exterior material , and the mounting member has a base plate portion fixed to the structural frame and a rising plate portion erected on the base plate portion. and said connecting member, and Zhang plate portion projecting from the rear of the outer member has a hanging plate section extending downwardly from said Zhang plate portion, the riser upper plate, said It consists of two plate materials, a first rising plate part arranged on the exterior material side and a second rising plate part arranged on the structural frame side, and the first rising plate is formed on both the front and back sides of the hanging plate part. plate portion, and the second standing upper plate portion is arranged so as to abut respectively the riser the hanging plate portion and the upper plate portion The combined wherein the are.
According to such a configuration, even when the exterior material is subjected to a negative pressure (a force that pulls the exterior material outward), the external load acting on the exterior material is provided from the drooping plate portion of the connection member to the attachment member It is not necessary to use a connecting bolt, since it is transmitted via the surface to the riser. By using the connecting member and the mounting member, it is possible to disperse and transmit the load from the exterior material, so it is possible to prevent the concentration of the load on the local part of the member.
In the exterior material mounting structure according to the second aspect of the present invention, the rising plate portion is provided at each of the outer end portions of the substrate portion that constitutes the mounting member provided at a position corresponding to the pair of left and right connection members. A locking plate portion is provided along a direction intersecting with the first and second locking plates, and the locking plate portion engages with the hanging plate portion of the connection member fixed to the exterior material. According to the configuration, when an external load in the horizontal direction acts on the exterior material, the connection member fixed to the exterior material is locked to the locking plate portion of the mounting member fixed to the structural frame, so the exterior It is possible to prevent the material from shifting in the horizontal direction (width direction).

The exterior material attachment structure of the third invention is an exterior material attachment structure for attaching a precast exterior material to a structural frame of a building, and is fixed to the attachment member fixed to the structural frame and the external material The mounting member includes a base plate portion fixed to the structure frame, and a rising plate portion provided upright on the base plate portion and having a slit formed downward from the upper end edge And the connecting member includes an overhanging portion projecting from the back surface of the outer covering material, and a locking portion provided at a tip end of the overhanging portion, and the locking portion is the outer covering It consists of a plate-like plate material of two sheets of the 1st latching | locking part arrange | positioned at the material side, and the 2nd latching | locking part arrange | positioned at the said structure frame side, The said overhang | projection part is inserted from the upper direction into the said slit. together, the standing upper portion is disposed on the riser between said first locking portion and the second locking portion The locking portion and the part is characterized by being engaged.
According to such a configuration, the external load transmitted through the outer covering material, even when the outer covering material is subjected to negative pressure, is between the locking portion of the connecting member and the rising plate portion of the mounting member. There is no need to use connecting bolts as they are transmitted by surface bonding. In addition, when an external load acts on the exterior material along the building outer wall, the side surface of the overhanging portion is joined to the fore-end surface of the slit of the rising plate portion, thereby moving in the horizontal direction (lateral direction) of the exterior material. Misalignment can be prevented. Therefore, if the connection member and the attachment member are used, the external load applied to the exterior material can be dispersed and transmitted, so that the load concentration on the local part of the member can be prevented.

The exterior material attachment structure of the fourth invention is an exterior material attachment structure for attaching a precast exterior material attached side by side vertically to a structural frame of a building, the attachment member being fixed to the structural frame And a pair of left and right first connection members fixed to the back surface of the lower exterior material , and a pair of left and right second connection members fixed to the upper surface of the exterior material , and the attachment member It has a substrate part fixed to the above-mentioned structure frame, and a rod-like locking part standingly arranged in the above-mentioned substrate part, and the above-mentioned first connecting member is the 1st overhang which overhangs from the back of the above-mentioned exterior material A plate portion, and a rising plate portion extending upward from the first protruding plate portion , wherein the second connection member is a second protruding plate portion protruding from the back surface of the exterior material; And a hanging plate portion extending downward from the second overhanging plate portion, wherein the rod-like locking portion is formed by Extends through a hole formed in ChoIzuruban portion, the standing upper portion, than the hanging plate portion disposed on the outer member side, the hanging plate portion and the standing upper plate portion engagement And a locking plate portion is provided at each of the outer end portions of the pair of left and right second overhanging plate portions along a direction intersecting the hanging plate portion, and the locking is performed. A plate portion is provided so as to cover an end portion of the rising plate portion .
According to such a configuration, the exterior members arranged vertically are locked to each other, and therefore, when the exterior members are subjected to negative pressure, the external load acting on one of the exterior members is the structure housing and the other Since it is distributed and transmitted to the exterior material, it is possible to prevent load concentration on the local part of the member. Further, according to the present invention, there is provided a second connection member provided at the lower end portion of the upper side exterior member, and one type of attachment member having the first connection member provided at the upper end portion of the lower side exterior member fixed to the structural frame. Since it is the exterior material attachment structure to join, the number of attachment members fixed to a structural frame can be reduced.

  According to the exterior material mounting structure according to the present invention, the external load acting on the exterior material is structured between the connection member fixed to the exterior material and the mounting member fixed to the structural frame without using the connection bolt. Can be transmitted to the body.

It is the perspective view which showed the exterior material attachment structure which concerns on 1st embodiment of this invention. It is sectional drawing which showed the exterior material attachment structure which concerns on 1st embodiment of this invention. It is the disassembled perspective view which showed the connection member and attachment member of the exterior material attachment structure which concern on 1st embodiment of this invention. It is the figure which showed the exterior material attachment structure which concerns on 2nd embodiment of this invention, Comprising: (a) is sectional drawing seen from the side direction, (b) is the II sectional view of (a), (c) ) Is a cross-sectional view taken along line II-II of (a). It is the perspective view which showed the exterior material attachment structure which concerns on 2nd embodiment of this invention. It is the disassembled perspective view which showed the connection member and the attachment member of the exterior material attachment structure which concern on 2nd embodiment of this invention. It is the perspective view which showed the hanging installation state of the exterior material of the exterior material attachment structure which concerns on 3rd embodiment of this invention. It is the perspective view which showed the hanging installation state of the exterior material of the exterior material attachment structure which concerns on 4th embodiment of this invention. It is the perspective view which showed the hanging installation state of the exterior material of the exterior material attachment structure which concerns on 5th embodiment of this invention. It is sectional drawing which showed the exterior material attachment structure which concerns on 6th embodiment of this invention. It is the perspective view which showed the exterior material attachment structure which concerns on 6th embodiment of this invention. It is the perspective view which showed the hanging installation state of the exterior material of the exterior material attachment structure which concerns on 6th embodiment of this invention.

First Embodiment
The exterior material attachment structure 1 which concerns on 1st embodiment is provided with the attachment member 10 (fastener for fixation) fixed to the structural housing 2, and the connection member 30 (fixing plate) fixed to the exterior material. The mounting member 10 has a substrate portion 11 fixed to the structural frame 2 and a rising plate portion 12 erected on the substrate portion 11, and the connecting member 30 projects from the back surface of the exterior material 3. It has an overhang plate portion 31 and a hanging plate portion 32 extending downward from the overhang plate portion 31. The rising plate 12 is disposed closer to the exterior material 3 than the hanging plate 32, and the rising plate 12 and the hanging plate 32 are engaged with each other. The exterior material attachment structure 1 eliminates the need for using a connection bolt by transmitting the external load acting on the exterior material 3 from the connection member 30 to the attachment member 10 via the surfaces of the respective members. It is. In the present embodiment, two rising plate portions 12 are provided in the interior and exterior direction of the building, and by pressing each on both the front and back sides of the hanging plate portion 32, a force (positive pressure) that pushes the exterior material 3 inward. And a force (negative pressure) for pulling the exterior material to the outside are transmitted to the structural housing 2.
In the present embodiment, the lateral direction (width direction) of the exterior material 3 is taken as the left-right direction, and the left and right when the outside is viewed from the inside of the building are used as a reference.

  As shown in FIG. 1, in the first embodiment, the structural housing 2 is made of, for example, a steel frame, and includes an outer peripheral beam along the outer peripheral wall surface of the building. The structural frame 2 is not limited to a steel frame, and may be another structure such as a reinforced concrete structure or a steel frame reinforced concrete structure. The exterior material 3 is, for example, an outer wall material such as a curtain wall, and is a member made of precast concrete in the present embodiment.

  The exterior material attachment structure 1 includes an attachment member 10 fixed to the structural housing 2 and a connection member 30 secured to the exterior material 3. The mounting member 10 and the connecting member 30 are locked to each other. The connecting members 30 are provided at a total of two places, one at a time, in the lateral width direction (both the left and right ends) of the exterior material at the lower end of the back surface of the exterior material 3. The mounting members 10 are provided at positions corresponding to the pair of left and right connecting members 30, 30.

As also shown in FIG. 2, the connection member 30 includes the overhanging plate portion 31 and the depending plate portion 32. The overhanging plate portion 31 is a portion projecting from the back surface of the exterior material 3 toward the structural housing 2 (inside of the building), and has a rectangular shape in plan view. The overhang plate portion 31 includes a buried portion 31 a and a protrusion 31 b. The buried portion 31 a is a portion to be buried in the exterior material 3. The deformed rebar 5 extending in the vertical direction penetrates through the buried portion 31a. The deformed rebar 5 is embedded in the exterior material 3 together with the embedded portion 31a. The protruding portion 31 b is a portion protruding from the back surface of the exterior material 3 and is orthogonal to the back surface.
The hanging plate portion 32 extends downward from the distal end portion (the distal end portion of the projecting portion 31 b) of the overhanging plate portion 31. The hanging plate portion 32 is orthogonal to the overhanging plate portion 31, and the connection member 30 has an L shape in a side view. The hanging plate portion 32 has a rectangular shape when viewed from the inside of the building.

The mounting member 10 is placed on a support 4 that projects from the structural frame 2 toward the outside of the building (the exterior material 3 side). The support base 4 includes a cantilever bracket 4a connected to a side surface of a flange of a beam, a receiving plate 4b provided on the cantilever bracket 4a, a reinforcing plate 4c, and a leg plate 4d for supporting the receiving plate 4b. Is equipped. The reinforcing plate 4c extends from the lower side of the cantilever bracket 4a to the web of the beam. The leg plate 4d is placed on the cantilever bracket 4a, and at its upper end, the support plate 4b is horizontally supported. In the receiving plate 4b, bolt through holes 4e (see FIG. 2) are formed. A high tension bolt 13 for fixing the mounting member 10 is inserted into the bolt through hole 4 e. The bolt through hole 4 e is a long loose hole formed to be larger in diameter than the shaft portion of the high tension bolt 13.
The mounting member 10 includes a substrate portion 11 and a rising plate portion 12. The substrate unit 11 is disposed horizontally and is mounted on the receiving plate 4 b. The substrate unit 11 has a rectangular shape in plan view. A bolt through hole 11a (see FIGS. 2 and 3) is formed in a portion of the substrate portion 11 closer to the inside of the building. The substrate portion 11 is fixed to the receiving plate 4b via a high tension bolt (HTB) 13 inserted into the bolt through hole 11a. The bolt through hole 11 a is a loose hole formed to be larger in diameter than the shaft portion of the high tension bolt 13. The installation position of the mounting member 10 can be adjusted by the bolt through hole 4 e and the bolt through hole 11 a being loose holes. In the present embodiment, both of the bolt through hole 4e and the bolt through hole 11a are loose holes, but the present invention is not limited to this. If at least one of the bolt through holes 4e and the bolt through hole 11a is a loose hole Just do it.

The rising plate portion 12 is provided upright on the substrate portion 11. The rising plate portion 12 is disposed orthogonal to the surface of the substrate portion 11 and in parallel to the back surface of the exterior material 3. The rising plate portion 12 is formed of two plate members of a first rising plate portion 12a and a second rising plate portion 12b. The first rising plate 12 a and the second rising plate 12 b are welded to the surface of the substrate 11.
As shown in FIG. 3, the first rising plate 12a and the second rising plate 12b both have a rectangular shape in a front view and are formed in the same size. The first rising plate 12 a rises from the outer end of the substrate 11. The second rising plate portion 12 b is located on the inner side of the building than the first rising plate portion 12 a. The distance between the plane including the outer surface of the second rising plate 12b and the plane including the inner surface of the first rising plate 12a is substantially equal to the thickness dimension of the hanging plate 32 of the connecting member 30. is there. That is, the hanging plate portion 32 can be inserted between the first rising plate portion 12a and the second rising plate portion 12b. When the hanging plate portion 32 is inserted between the first rising plate portion 12a and the second rising plate portion 12b, the first rising plate portion 12a is located outside the building than the hanging plate portion 32 (exterior material The second rising plate 12b is disposed on the inner side of the building (the side of the structural frame 2) than the hanging plate 32. In addition, the inner surface of the first rising plate 12a is in surface contact with the outer surface of the depending plate 32, and the outer surface of the second rising plate 12b is in contact with the inner surface of the depending plate 32. It will be. As a result, the rising plate 12 and the hanging plate 32 are engaged.
The left-right width dimension of the first rising plate portion 12 a and the left-right width dimension of the second rising plate portion 12 b are both approximately half of the left-right width dimension of the substrate portion 11. Of the pair of left and right mounting members 10 provided on the exterior member 3, the first rising plate portion 12a is disposed on the left side of the left mounting member 10 (shown on the left front side in FIG. 1). The rising plate portion 12b is disposed on the right side. On the other hand, in the right mounting member 10 (shown on the right side in FIG. 1), the first rising plate portion 12a is disposed on the right side, and the second rising plate portion 12b is disposed on the left side.

  As shown in FIG. 1, at one end of the substrate 11 which is orthogonal to the back surface of the exterior material, a locking plate 14 is provided standing on the substrate and connecting the substrate and the upright. ing. The locking plate portion 14 is provided at the outer end of each of the pair of left and right mounting members 10 provided on the exterior material 3, that is, at the outer end of the first rising plate portion 12 a. Alternatively, the locking plate portion 14 is provided at each end portion of the opposing substrate portion 11 in the pair of attachment members 10 and 10 fixed to the exterior material 3. The locking plate portion 14 is disposed along a direction (in the present embodiment, an orthogonal direction) intersecting the rising plate portion 12. The locking plate portion 14 is disposed such that the connecting member fixed to the outer covering material is always surface-joined when the outer covering material moves in the horizontal direction, and the outer covering material 3 is prevented from moving in the horizontal direction. It is a member of The locking plate portion 14 is provided so as to cover the end of the hanging plate portion 32. The locking plate portion 14 prevents the exterior material 3 from being displaced in the horizontal direction (lateral direction) by bringing the connection member 30 fixed to the exterior material into contact with the end face (small end surface) of the hanging plate portion 32. ing. The locking plate portion 14 has a right triangle shape. Two sides of the locking plate portion 14 orthogonal to each other are welded to the base plate portion 11 and the first rising plate portion 12a.

According to the exterior material attachment structure 1 configured as described above, when the exterior material 3 receives a negative pressure (a force that pulls the exterior material outward), the external load acting on the exterior material 3 is the connection member 30. Is transmitted from the hanging plate portion 32 to the first rising plate portion 12 a of the mounting member 10 via the surface and is transmitted to the structural housing 2. On the other hand, when the exterior material 3 receives a positive pressure (a force that pushes the exterior material inward), the external load acting on the exterior material 3 is a second standing of the attachment member 10 from the hanging plate portion 32 of the connection member 30. It is transmitted to the upper plate 12 b via a surface and transmitted to the structural housing 2. As a result, the external load can be dispersed and transmitted, and the load concentration on the local part of the member can be prevented. Further, since the hanging plate portion 32 of the connecting member 30 transmits the external load by pressing the rising plate portion 12 of the mounting member 10, the fastening member such as the connection bolt can be omitted. The number of connecting members can be reduced. Furthermore, high tensile stress does not act on one member (connection bolt) as in the prior art.
Further, when installing the exterior material 3, the hanging plate portion 32 of the connection member 30 can be engaged with the rising plate portion 12 of the mounting member 10 only by hanging the exterior material 3 vertically, so that fastening is achieved. There is no need for a member tightening process. Therefore, construction becomes easy, and construction time and construction time can be reduced.
Furthermore, in the present embodiment, since the hanging plate portion 32 of the connecting member 30 is locked to the locking plate portion 14 of the mounting member 10, the force for moving the exterior material 3 in the lateral direction is applied. Even in this case, the exterior material 3 can be prevented from being displaced in the lateral direction.
Therefore, the exterior material attachment structure according to the present embodiment is a fastener structure that bears the weight of the exterior material (vertical force) and horizontal seismic load (surface external force, in-plane force).

Second Embodiment
As shown in FIGS. 4 to 6, the exterior material attachment structure 1 a according to the second embodiment differs from the first embodiment in the shapes of the attachment member 10 a and the connection member 30 a.

The connecting member 30 a has a protruding portion 35 protruding from the back surface of the exterior material 3 and a locking portion 36 provided at the tip of the protruding portion 35.
The overhanging portion 35 in the present embodiment is preferably a rectangular flat steel material or a square steel pipe having a large cross section coefficient and high rigidity structural performance. The overhanging portion 35 is a portion projecting from the back surface of the exterior material 3 toward the structural housing 2 (inside of the building), and is orthogonal to the back surface of the exterior material 3. When the overhanging portion 35 is a square steel pipe, the overhanging portion 35 includes a buried portion 35 a embedded in the exterior material 3 and a projecting portion 35 b projecting from the back surface of the exterior material 3. A hook-shaped pullout preventing plate 37 is provided at the base end (the outer end of the building) of the buried portion 35a.
The pullout prevention plate 37 has a rectangular shape in a front view. On the surface inside the building of the pullout prevention plate 37, a first deformed reinforcing bar 6a for pullout prevention is embedded. The first deformed rebar 6 a extends in the vertical direction and is welded to the inner surface of the pullout preventing plate 37. Two first deformed reinforcing bars 6a are provided so as to sandwich the buried portion 35a from the left and right. A second deformed reinforcing bar 6b for preventing withdrawal is embedded in a portion closer to the back of the exterior material 3 than the first deformed bar 6a. Two second deformed bars 6b are provided so as to sandwich the buried portion 35a from the left and right, and are welded to the side surfaces of the buried portion 35a.

The locking portion 36 is provided at the tip (the end inside the building) of the overhanging portion 35. As shown in FIG. 4, the locking portion 36 includes a first locking portion 36 a and a second locking portion 36 b. The first locking portion 36 a is a bowl-shaped plate member surrounding the overhanging portion 35 and has a square outer periphery. The first locking portion 36a is welded to the base end portion of the protruding portion 35b (the portion intersecting with the back surface portion of the exterior material 3). The building outer side of the first locking portion 36 a is buried in the back of the exterior material 3. The inside of the building of the first locking portion 36 a protrudes from the back surface of the exterior material 3. The inner surface of the first locking portion 36 a is exposed on the back surface of the exterior material 3 and is parallel to the back surface of the exterior material 3.
The second locking portion 36b is formed of a hook-shaped plate provided at the tip of the projecting portion 35b (the end on the inner side of the building of the overhang 35), and is positioned on the inside of the building than the first locking portion 36a. . The second locking portion 36 b has a rectangular shape in a front view (long rectangular shape). The distance between the outer surface of the second locking portion 36b and the inner surface of the first locking portion 36a is the thickness dimension of the rising plate portion 16 of the mounting member 10a and the thickness of the two sliding members 18 described later. It is approximately equal to the distance obtained by adding the height dimension. That is, the rising plate portion 16 and the two sliding members 18 can be inserted between the first locking portion 36a and the second locking portion 36b.

The mounting member 10 a is placed on the support 7. The support base 7 is made of a grooved steel having a U-shaped cross section, and is provided on a beam which is the structural frame 2. The support base 7 is disposed such that the grooved steel web 7 a is on the upper side, and the web 7 a is a support surface. The lower ends of the flanges 7b, 7b at both ends of the web 7a are welded to the beam. Bolt through holes 7c (see (b) and (c) in FIG. 4) are formed in the web 7a. A high tension bolt 13 for fixing the mounting member 10a is inserted into the bolt through hole 7c. The bolt through holes 7 c are long holes in which the shaft portion of the high tension bolt 13 can move. The elongated holes extend in the left-right direction.
The mounting member 10 a is formed of an angled member including the substrate portion 15 and the rising plate portion 16. The substrate unit 15 is disposed horizontally and is placed on the web 7 a. The substrate unit 15 has a rectangular shape in plan view. A bolt through hole 15a (see (b) in FIG. 4) is formed in a portion closer to the inside of the building of the substrate portion 15. The substrate portion 15 is fixed to the support 7 via a high tension bolt 13 inserted into the bolt through hole 15a. The bolt through holes 15a are long holes. The long holes extend in the inward and outward directions of the building. In addition, in this embodiment, although the bolt through-hole 7c and the bolt through-hole 15a are long holes, it is not limited to this. For example, at least one of the bolt through hole 7c and the bolt through hole 15a may be a loose hole.

  The rising plate portion 16 is a plate-like portion rising from the substrate portion 15. The rising plate portion 16 is disposed orthogonal to the substrate portion 15 and in parallel with the back surface of the exterior material 3. The rising plate portion 16 is welded to the surface of the substrate portion 15. At the center in the left-right direction of the rising plate portion 16, a slit 17 cut downward from the upper end edge is formed. The width dimension of the slit 17 is substantially equal to the width dimension of the overhanging portion 35 of the mounting member 10a. The depth dimension of the slit 17 is a length that can absorb the required length for the behavior of the exterior material 3, the thermal elongation of the exterior material 3, and the construction error. The overhanging portion 35 is inserted into the slit 17 from above. When the overhanging portion 35 is inserted into the slit 17, a part of the rising plate portion 16 (right and left side portions of the slit 17) is positioned between the first locking portion 36a and the second locking portion 36b. . The sliding member 18 is provided in the gap between the first locking portion 36 a and the rising plate portion 16 and in the gap between the second locking portion 36 b and the rising plate portion 16. The inner surface of the first locking portion 36a and the outer surface of the rising plate portion 16 make surface contact via the sliding member 18, and the outer surface of the second locking portion 36b and the inner surface of the rising plate portion 16 Is in surface contact via the sliding member 18.

The slide member 18 has a front view gate-like shape, and is provided with a slit 18a which is cut upward from the lower end edge. The width dimension of the slit 18a is substantially equal to the width dimension of the overhanging portion 35 of the mounting member 10a. The overhanging portion 35 is disposed in the slit 18a. After the sliding member 18 locks the connection member 30a to the mounting member 10a, the gap between the first locking portion 36a and the rising plate portion 16, the second locking portion 36b, and the rising plate portion 16 It is inserted in both of the gaps respectively.
The sliding material is a sheet having a small coefficient of friction, such as Teflon (registered trademark) or stainless steel. Further, by interposing the slip material, the behavior of the exterior material can be made smooth, and the noise generated by the friction of the metal can be prevented.

According to the exterior material attachment structure 1a having the above-described configuration, by using a circular steel or rectangular steel for the overhang portion, even a narrow-diameter, small-section steel is provided with high axial rigidity. Can be realized. Also, when the exterior material 3 receives a negative pressure, the external load acting on the exterior material 3 is from the second locking portion 36b of the connection member 30a to the rising plate portion 16 of the mounting member 10a via a surface. And transmitted to the structural housing 2. On the other hand, when the exterior material 3 receives a positive pressure, the external load acting on the exterior material 3 has a surface from the first locking portion 36a of the connection member 30a to the rising plate portion 16 of the mounting member 10a. And transmitted to the structural housing 2. As a result, the external load can be dispersed and transmitted, and the load concentration on the local part of the member can be prevented. Furthermore, since the locking portion 36 of the connecting member 30a transmits the external load by pressing the rising plate portion 16 of the mounting member 10a, a fastening member such as a connection bolt can be omitted. The number of connecting members can be reduced. Furthermore, high tensile stress does not act on one member (connection bolt) as in the prior art.
Further, when installing the exterior material 3, the locking portion 36 of the connection member 30 a can be engaged with the rising plate portion 16 of the mounting member 10 a simply by hanging down the exterior material 3 vertically, so fastening is achieved. There is no need for a member tightening process. Therefore, construction becomes easy, and construction time and construction time can be reduced.
Furthermore, in the present embodiment, the overhanging portion 35 of the connection member 30 is inserted into the slit 17 of the rising plate portion 16 of the mounting member 10a and is locked to the locking plate portion 14 of the mounting member 10a. Therefore, the sheath material 3 can be prevented from being displaced in the lateral direction with respect to a force (a force generated in the lateral direction due to an earthquake) that generates the sheath material 3 in the lateral direction, and the force can be supported. Even when a force to move is applied, the exterior material 3 can be prevented from being displaced in the width direction.
By the way, the external force of the exterior material 3 may be determined by the wind force, and may be determined by the in-plane seismic force. Since the overhanging portion 35 embedded in the exterior material 3 is a square shape, the section coefficient in the direction in which the external force is large can be set more easily than the round shape, and therefore, the size can be easily changed.
Further, in the case where the overhanging portion is in the shape of a square tube, the inside of the overhanging portion is hollow, and by being in the shape of a square tube, a lightweight and highly rigid connecting member can be realized.

Third Embodiment
As shown in FIG. 7, the exterior material attachment structure 1b according to the third embodiment differs from the first embodiment in the shapes of the attachment member 10b and the connection member 30b. More specifically, the hanging plate portion 41 of the connecting member 30b is formed of two plate members spaced apart inward and outward from the building, and the rising plate portion 21 of the mounting member 10b is formed of one plate member. It has become.

The mounting member 10 b is mounted on the support 4, and includes a substrate portion 20 and a rising plate portion 21. Since the support stand 4 and the board | substrate part 20 are the same structures as 1st embodiment, the same code | symbol is attached | subjected and description is abbreviate | omitted.
The rising plate portion 21 is formed of a single plate member erected on the substrate portion 20. The rising plate portion 21 is disposed orthogonal to the surface of the substrate portion 20 and in parallel with the back surface of the exterior material 3. The rising plate 21 is welded to the surface of the substrate 20.

  A locking plate portion 14 for preventing the exterior material 3 from moving in the left-right direction is provided at one end portion in the left-right direction of the substrate portion 20 (one end portion in the lateral width direction of the exterior material) . The locking plate portion 14 is provided at the outer end of the pair of left and right mounting members 10 b provided on the exterior material 3. The locking plate portion 14 is disposed along the direction (in the present embodiment, the orthogonal direction) intersecting the rising plate portion 21. The locking plate portion 14 is provided so as to cover the end of the second hanging plate portion 41 b. The locking plate portion 14 abuts on the end surface (small end surface) of the second hanging plate portion 41 b, thereby suppressing the movement of the hanging plate portion 41 and preventing the exterior material 3 from being displaced.

The connection member 30 b includes the projecting plate portion 40 and the hanging plate portion 41. The overhanging plate portion 40 and the depending plate portion 41 are respectively divided, and the connection member 30b is a first member including the first overhanging plate portion 40a and the first depending plate portion 41a, and the second overhanging plate portion 40b. And a second member consisting of a second depending plate portion 41b.
The hanging plate portion 41 is composed of two plate members of a first hanging plate portion 41a and a second hanging plate portion 41b. The first hanging plate portion 41a and the second hanging plate portion 41b both have a rectangular shape in a front view, and are formed in the same size. The second hanging plate portion 41b is located more inside than the first hanging plate portion 41a. The distance between the plane including the outer surface of the second depending plate 41b and the plane including the inner surface of the first depending plate 41a is the thickness dimension of the rising plate 21 of the mounting member 10b and the slip of two sheets It is approximately equal to the distance obtained by adding the thickness dimension of the material 18. That is, the rising plate portion 21 can be inserted between the first hanging plate portion 41a and the second hanging plate portion 41b. When the rising plate portion 21 is inserted between the first hanging plate portion 41a and the second hanging plate portion 41b, the first hanging plate portion 41a is located outside the building than the rising plate portion 21 (exterior material 3 It arrange | positions on the side, and the 2nd suspension board part 41b will be arrange | positioned rather than the rising board part 21 inside a building (structural frame 2 side). A sliding member (not shown) is interposed between the first hanging plate portion 41 a and the rising plate portion 21. A sliding member (not shown) is also interposed between the second hanging plate portion 41 b and the rising plate portion 21. That is, the inner surface of the first hanging plate portion 41 a makes surface contact with the outer surface of the rising plate portion 21 through the sliding member, and the outer surface of the second hanging plate portion 41 b and the inner surface of the rising plate portion 21. And will come into surface contact via the sliding member. Thus, the hanging plate portion 41 and the rising plate portion 21 are engaged.
The overhanging plate portion 40 is formed of two plate members of a first overhanging plate portion 40a and a second overhanging plate portion 40b. The first overhanging plate portion 40a supports the first depending plate portion 41a, and the second overhanging plate portion 40b supports the second depending plate portion 41b.

Of the left and right connecting members 30b, 30b, in the left connecting member 30b (shown on the left front side in FIG. 7), the second member is disposed on the left side, and the first member is disposed on the right side. On the other hand, in the connection member 30b on the right side (shown on the right side in FIG. 7), the second member is disposed on the right side, and the first member is disposed on the left side. That is, the second member is disposed outside the pair of left and right connecting members 30b, 30b, and the first member is disposed inside the pair of left and right connecting members 30b, 30b.
The base end portions of the first overhanging plate portion 40a and the second overhanging plate portion 40b are embedded in the exterior material 3 (not shown). In the embedded portion (not shown), a deformed reinforcing bar (not shown) extending in the vertical direction is fixedly penetrated.

Fourth Embodiment
As shown in FIG. 8, the exterior material attachment structure 1c according to the fourth embodiment differs from the first embodiment in the shapes of the attachment member 10c and the connection member 30c. More specifically, the hanging plate portion 43 of the connecting member 30c is formed of two plate members spaced apart inward and outward from the building, and the rising plate portion 21 of the mounting member 10c is formed of one plate member. It has become. Moreover, what is different from the third embodiment is that the two hanging plate portions 43, 43 are supported by one projecting plate portion 42.

The mounting member 10 c is placed on the support 4. The mounting member 10 c includes a base portion 22 and a rising plate portion 23. The support 4 and the substrate unit 22 have the same configuration as in the first embodiment.
The rising plate portion 23 is formed of a single plate material. The rising plate portion 23 is disposed orthogonal to the surface of the substrate portion 20 and in parallel with the back surface of the exterior material 3. The rising plate portion 23 is welded to the surface of the substrate portion 22.

The connecting member 30 c is provided with a projecting plate portion 42 and a hanging plate portion 43. The overhanging plate portion 42 has the same shape as the overhanging plate portion 31 of the first embodiment.
The hanging plate portion 43 is formed of two plate members of a first hanging plate portion 43a and a second hanging plate portion 43b. The first hanging plate portion 43a and the second hanging plate portion 43b have the same shape and the same size. The second hanging plate portion 43 b hangs down from the tip (inner end) of the overhanging plate portion 42. The first hanging plate portion 43a is located on the outer side of the building than the second hanging plate portion 43b. The distance between the outer surface of the second hanging plate 43b and the inner surface of the first hanging plate 43a is the thickness of the rising plate 21 of the mounting member 10c and the thickness of the two sliding members 18 And a distance approximately equal to That is, the rising plate portion 23 can be inserted between the first hanging plate portion 43a and the second hanging plate portion 43b. When the rising plate portion 23 is inserted between the first hanging plate portion 43a and the second hanging plate portion 43b, the first hanging plate portion 43a is disposed outside the building than the rising plate portion 23, The second hanging plate portion 43 b is disposed on the inner side of the building than the rising plate portion 23.
Further, a sliding member (not shown) is interposed between the first hanging plate portion 43 a and the rising plate portion 23. A sliding member (not shown) is also interposed between the second depending plate 43 b and the rising plate 23. As a result, the inner surface of the first hanging plate portion 43a and the outer surface of the rising plate portion 23 are in surface contact via the sliding member, and the outer surface of the second hanging plate portion 43b and the inner surface of the rising plate portion 23 The surface comes into surface contact via the sliding member. Thus, the hanging plate portion 43 and the rising plate portion 23 are engaged.

  A locking plate portion 14a is provided at an end portion in the left-right direction of the connection member 30c. The locking plate portion 14 a is provided at an end portion on the outside of the pair of left and right connection members 30 c provided on the exterior material 3. The locking plate portion 14 a is disposed along a direction (in the present embodiment, an orthogonal direction) intersecting the hanging plate portion 43. The locking plate portion 14 a has a vertically-long rectangular shape, and is provided so as to cover the end of the rising plate portion 23. By bringing the locking plate portion 14a into contact with the end face (small end face) of the rising plate portion 23, the movement of the hanging plate portion 43 is suppressed to prevent the exterior material 3 from being shifted in the lateral direction. .

(Fifth embodiment)
As shown in FIG. 9, the exterior material attachment structure 1d according to the fifth embodiment differs from the first embodiment in the shape of the attachment member 10d. Specifically, the rising plate portion 25 of the mounting member 10d is formed of two plate members spaced apart inward and outward directions of the building, and the lateral width dimension of the rising plate portion 25 is the left and right of the substrate portion 24. It is the same point as the width dimension. The connecting member 30 d includes a projecting plate portion 44 and a hanging plate portion 45. The connecting member 30d has the same shape as the connecting member 30 of the first embodiment.

The mounting member 10 d is placed on a support 4 that projects from the structural frame 2 toward the building exterior (the exterior material 3 side). The mounting member 10 d includes a substrate portion 24 and a rising plate portion 25. The support 4 and the substrate unit 24 have the same configuration as in the first embodiment.
The rising plate portion 25 is composed of two plate members (a first rising plate portion 25 a and a second rising plate portion 25 b) erected on the substrate portion 24. The first rising plate 25a and the second rising plate 25b have the same shape and the same size. The first rising plate 25 a rises from the outer end of the substrate 24. The second rising plate portion 25 b is located on the inner side of the building than the first rising plate portion 25 a. The distance between the outer surface of the second rising plate 25b and the inner surface of the first rising plate 25a is determined by the thickness of the hanging plate 45 of the connecting member 30d and the two sliding members (not shown). And the thickness dimension of. That is, the hanging plate portion 45 is inserted between the first rising plate portion 25a and the second rising plate portion 25b. The first rising plate portion 25 a is disposed outside the building with the hanging plate portion 45, and the second rising plate portion 25 b is disposed inside the building with the hanging plate portion 45.
A sliding member (not shown) is interposed between the hanging plate portion 45 and the first rising plate portion 25a, and a sliding member (not shown) is interposed between the hanging plate portion 45 and the second rising plate portion 25b. ) Is interposed. The inner surface of the first rising plate 25a is in surface contact with the outer surface of the depending plate 45 via the sliding member, and the outer surface of the second rising plate 25b and the inner surface of the depending plate 45 are It will be in surface contact via the sliding material. Thus, the rising plate 25 and the hanging plate 45 are engaged.
The left-right width dimension of the first rising plate portion 25 a and the left-right width dimension of the second rising plate portion 25 b are both equal to the left-right width dimension of the substrate portion 11. That is, although the first rising plate portion 12a and the second rising plate portion 12b of the first embodiment are arranged to be offset to the left and right in the front view, the first rising plate portion 25a and the second rising plate portion 12b of the first embodiment The second rising plate portion 25 b is disposed at a position where it overlaps in a front view.

Of the left and right end portions of the mounting member 10d, at the end portions on the outer side of the left and right mounting members 10d and 10d, a locking plate portion 14a for preventing the exterior material 3 from moving in the left and right direction is provided. It is done. The locking plate portion 14 a extends along a direction (in the present embodiment, an orthogonal direction) intersecting the rising plate portion 25. The locking plate portion 14 a has a vertically-long rectangular shape, and is provided so as to cover an end portion of the hanging plate portion 45. The locking plate portion 14a abuts on the end face (small end face) of the hanging plate portion 45, thereby suppressing the movement of the hanging plate portion 45 and preventing the exterior material 3 from being displaced.
Also in the exterior material attachment structures 1b, 1c, and 1d according to the third to fifth embodiments as described above, the same function and effect as those of the first embodiment can be obtained.

Sixth Embodiment
As shown in FIGS. 10 to 12, the exterior material attachment structure 101 according to the sixth embodiment includes an attachment member 110 fixed to the structural housing 2 and a first connection member 120 secured to the lower exterior material 3 a. And the second connection member 130 fixed to the upper exterior material 3 b. The first connection member 120 is locked to the mounting member 110, and the second connection member 130 is locked to the first connection member 120. The first connection members 120 are respectively provided at the left and right end portions of the upper end portion of the rear surface of the lower exterior material 3a. The second connection members 130 are respectively provided at the left and right end portions of the lower end portion of the back surface of the upper exterior member 3 b. The mounting members 10 are provided at positions corresponding to the pair of left and right first connection members 120, 120.

The mounting member 110 is placed on the support 4. The support 4 has the same configuration as that of the first embodiment. The mounting member 110 includes a substrate portion 111 and a rod-like locking portion 112.
The substrate portion 111 is a rectangular plate and is welded onto the receiving plate 4 b of the support 4. The rod-like locking portion 112 is provided upright on the substrate portion 111 and has a cylindrical shape. The rod-like locking portion 112 is inserted into the locking hole 123 formed in the first connection member 120.

The first connection member 120 is a load receiving member for transmitting an external load acting on the exterior material 3 a to the structural housing 2. The first connection member 120 includes a first projecting plate portion 121 and a rising plate portion 122.
The first overhanging plate portion 121 is a portion projecting from the back surface of the exterior material 3 a toward the structural housing 2 (inside of the building), and extends in the horizontal direction. The first overhang plate portion 121 has a rectangular shape in a plan view. The first overhang plate portion 121 includes a buried portion 121 a and a protruding portion 121 b. The buried portion 121a is a portion to be buried in the exterior material 3a. The deformed rebar 5 extending in the vertical direction penetrates through the buried portion 121a. The deformed rebar 5 is embedded in the exterior material 3a together with the embedded portion 121a.
The projecting portion 121 b is a portion projecting from the back surface of the exterior material 3 and is orthogonal to the back surface. The protruding portion 121 b is placed on the substrate portion 111 of the mounting member 110. A locking hole (a hole) 123 is formed in the projecting portion 121 b. The locking hole 123 has an inner diameter equal to the outer diameter of the rod-shaped locking portion 112. The rod-like locking portion 112 is inserted into the locking hole 123. As a result, the first connection member 120 is engaged with the mounting member 110, and the lateral movement of the exterior material 3a is suppressed.
The rising plate portion 122 is a plate member standing on the first projecting plate portion 121. The rising plate portion 122 is orthogonal to the surface of the first overhanging plate portion 121 and is welded to the surface of the first overhanging plate portion 121. The rising plate portion 122 is provided at the proximal end portion of the protruding portion 121b, and is disposed in contact with the back surface of the exterior material 3a. The rising plate portion 122 extends above the upper end of the exterior material 3a. As shown in FIGS. 10 and 11, the upper end portion of the rising plate portion 122 extends to a height overlapping the hanging plate portion 132 of the second connection member 130. Further, the upper end portion of the rising plate portion 122 is inserted between the hanging plate portion 132 and the exterior material 3 b.

The second connection member 130 includes a second overhanging plate portion 131 and a drooping plate portion 132. The second overhanging plate portion 131 is a portion projecting from the back surface of the exterior material 3 b toward the structural frame 2 (inside of the building) and extends in the horizontal direction. The second overhanging plate portion 131 includes a buried portion 131a and a projecting portion 131b. The buried portion 131a is a portion to be buried in the exterior material 3b. The deformed rebar 5 extending in the up-down direction is penetrated and fixed to the buried portion 131a. The deformed rebar 5 is embedded in the exterior material 3b together with the embedded portion 131a. The protruding portion 131 b is a portion protruding from the back surface of the exterior material 3 b and protrudes orthogonal to the back surface.
The hanging plate portion 132 extends downward from the tip end portion (the tip portion of the projecting portion 131 b) of the second overhanging plate portion 131 and is orthogonal to the second overhanging plate portion 131. The second connection member 130 is L-shaped in a side view. The hanging plate portion 132 has a rectangular shape when viewed from the inside of the building. The separation distance between the outer surface of the hanging plate portion 132 and the back surface of the exterior material 3 b is substantially equal to the thickness dimension of the rising plate portion 122 of the first connection member 120. The rising plate portion 122 is disposed on the building outer side (the exterior material 3b side) than the hanging plate portion 132, and the exterior material 3b is disposed on the building outer side (the facing material 3b side) than the hanging plate portion 132. Become. Then, the inner surface of the rising plate 122 and the outer surface of the depending plate 132 come into surface contact, and the outer surface of the rising plate 122 and the back of the exterior material 3 b come into surface contact. As a result, the rising plate portion 122 is engaged with the hanging plate portion 132 and the exterior material 3b.

  A locking plate portion 134 is provided at the left and right direction end of the second connection member 130. The locking plate portion 134 is provided at the outer end of the second connection members 130 and 130 provided on the left and right of the exterior material 3. The locking plate portion 134 is disposed along a direction (in the present embodiment, an orthogonal direction) intersecting the hanging plate portion 132. The locking plate portion 134 has a right triangle shape. The two side portions orthogonal to each other of the locking plate portion 134 are respectively welded to the second overhanging plate portion 131 and the hanging plate portion 132. The locking plate portion 134 is provided to cover the end of the rising plate portion 122. By bringing the locking plate portion 134 into contact with the end face (small end face) of the rising plate portion 122, the movement of the rising plate portion 122 is suppressed.

According to the exterior material attachment structure 101 configured as described above, when the exterior material 3b receives a negative pressure (a force that pulls the exterior material outward), the external load acting on the exterior material 3b is a second connection. It is transmitted through the surface from the hanging plate portion 132 of the member 130 to the rising plate portion 122 of the first connection member 120, and then from the first overhanging plate portion 121 of the first connection member 120 via the mounting member 110. Is transmitted to the structural housing 2. On the other hand, when the exterior material 3b receives a positive pressure (a force that pushes the exterior material inward), the external load acting on the exterior material 3b is the rising plate portion of the first connection member 120 from the back surface of the exterior material 3b. The light is transmitted to the surface 122 via the surface, and then transmitted from the first overhanging plate portion 121 of the first connection member 120 to the structural housing 2 via the mounting member 110. This enables the external load to be distributed and transmitted. Furthermore, since the drooping plate portion 132 of the second connection member 130 and the back surface of the exterior material 3b transmit the external load by pressing the rising plate portion 122 of the first connection member 120, such as a connection bolt While being able to omit a fastening member, the number of connection members can be reduced.
In addition, when installing the exterior members 3a and 3b, it is only necessary to vertically suspend the exterior members 3a and 3b, so that the process of tightening the fastening members becomes unnecessary. Therefore, construction becomes easy, and construction time and construction time can be reduced.
Furthermore, in the present embodiment, since the rising plate portion 122 of the first connection member 120 is locked to the locking plate portion 134 of the second connection member 130, the exterior material 3b may be moved in the lateral direction. Even when a force is applied, the upper exterior material 3b can be prevented from being laterally displaced with respect to the lower exterior material 3a.

As mentioned above, although the form for implementing this invention was demonstrated, this invention is not the meaning limited to the said embodiment, A design change is suitably possible in the range which does not deviate from the meaning of this invention. For example, in the said embodiment, although the exterior material 3 is products made from precast concrete, it is not limited to this, What is necessary is just a thing made from the precast shape | molded previously. The exterior material 3 may be an outer wall material made of, for example, a plate material made of stainless steel.
Moreover, in the said embodiment, although the latching board part was provided in the one end part of the board | substrate part which comprises the attachment member fixed to a structural frame, the one end part of the connection member fixed to the exterior material If it can stop, it may replace with a latching board part and may be a projection part. The mounting member is fixed to the steel aggregate of the structural frame by welding, but may be fixed to the concrete frame by an anchor bolt or the like.

1 Exterior material mounting structure 2 Structural frame 3 Exterior material 10 Mounting member 11 Substrate portion
12 rising plate portion 12a first rising plate portion 12b second rising plate portion 14 locking plate portion 30 connecting member 31 overhanging plate portion 32 hanging plate portion 101 exterior material mounting structure 110 mounting member 111 substrate portion 112 bar-shaped engagement member Stop portion 120 first connection member 121 first extension plate portion 122 rising plate portion 130 second connection member 131 second extension plate portion 132 hanging plate portion 134 locking plate portion

Claims (4)

An exterior material attachment structure for attaching a precast exterior material to a structural frame of a building,
And a pair of left and right connection members fixed to the back surface of the exterior material.
The mounting member includes a substrate portion fixed to the structural frame, and a rising plate portion erected on the substrate portion.
The connecting member has an overhanging plate portion projecting from the back surface of the exterior material, and a hanging plate portion extending downward from the overhanging plate portion.
The rising plate portion includes two plate members, a first rising plate portion disposed on the exterior material side and a second rising plate portion disposed on the structural frame side.
The first rising plate portion and the second rising plate portion are disposed in contact with both the front and back surfaces of the hanging plate portion , and the rising plate portion and the hanging plate portion are engaged. Exterior material attachment structure characterized by At the respective outer end portions of the base plate portion constituting the mounting member provided at positions corresponding to the pair of left and right connecting members, a locking plate portion along a direction intersecting the rising plate portion Is provided,
The exterior material mounting structure according to claim 1, wherein the locking plate portion engages with the hanging plate portion of the connection member fixed to the exterior material. An exterior material attachment structure for attaching a precast exterior material to a structural frame of a building,
And a connecting member fixed to the exterior member, and a mounting member fixed to the structure housing,
The mounting member has a substrate portion fixed to the structural frame, and a rising plate portion provided upright on the substrate portion and having a slit formed downward from the upper end edge ,
The connecting member has a protruding portion protruding from the back surface of the exterior material, and a locking portion provided at the tip of the protruding portion.
The locking portion includes two hook-shaped plate members, a first locking portion disposed on the exterior material side and a second locking portion disposed on the structural housing side.
The projecting portion is inserted into the slit from above, and the rising plate portion is disposed between the first locking portion and the second locking portion, and the rising plate portion and the locking portion An exterior material attachment structure characterized in that the parts are engaged. An exterior material attachment structure for attaching a precast exterior material to be attached side by side to a structural frame of a building,
A mounting member fixed to the structural frame, a pair of left and right first connection members fixed to the back surface of the lower exterior material , and a pair of left and right second connection members fixed to the back surface of the upper exterior material Equipped with
The mounting member has a base portion fixed to the structural frame, and a rod-like locking portion provided upright on the base portion.
The first connection member includes a first projecting plate portion projecting from a back surface of the lower exterior material and a rising plate portion extending upward from the first projecting plate portion .
The second connection member has a second projecting plate portion projecting from the back surface of the exterior material, and a hanging plate portion extending downward from the second projecting plate portion.
The rod-shaped locking portion passes through a hole formed in the first projecting plate portion,
The standing upper portion, than the hanging plate portion disposed on the outer member side, the hanging plate portion and the standing upper portion is engaged,
A locking plate is provided at the outer end of each of the pair of left and right second projecting plates along a direction intersecting the hanging plate, and the locking plate is formed by the locking plate. An exterior material attachment structure provided so as to cover an end portion of the rising plate portion .

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