JP2018066169A - Joint element of building wall, joint structure of building wall, and joint method of building wall - Google Patents

Abstract

PROBLEM TO BE SOLVED: To construct a building wall which is compatible to a sealing less construction method at external corners and internal corners of the building, with easy construction, having superior water blocking performance and appearance quality.SOLUTION: A joint element 1 for the building wall of this invention, which can be used for the exterior wall construction at the external corner 15a of the building 12 using siding boards 2, comprises a first male fitting part 5A to be arranged to enter at least in part into a first acceptance concave part 4A which is formed inside of the first masonry joint 3A, a second male fitting part 5B to be arranged to enter at least in part into a second acceptance concave part 4B which is formed inside of a second masonry joint 3B, a mounting seat plate 10A for the external corner in which a first alar plate 10a to be arranged to fit to a first side surface 20a of a substrate member 20 for a corner part and a second alar plate 10b to be arranged to fit a second surface 20b of the substrate member 20 for the corner part are connected in the state of a mountain crease. The first male fitting part 5A, the second male fitting part 5B and the mounting seat plate 10A for the external corner are constituted in one body member.SELECTED DRAWING: Figure 3

Description

  The present invention provides a joint for a building outer wall that can be used in a so-called sealing-less method for joining a siding board used as an outer wall material without a sealing material in exterior wall construction at the corner of a building or in a corner, and the joint. The present invention relates to a building outer wall joining structure and a building outer wall joining method executed when constructing the joint structure.

When building the outer wall of a building or the like, a siding board as disclosed in Patent Document 1 below is widely used. Various types of siding boards are available in various designs, textures and colors. In addition to the siding boards for flat surfaces used for exterior wall surfaces of building structures, the corners of building structures There is a corner siding board that is used to coat the corner including the corner.
When such a siding board is used to construct an outer wall of a building or the like, a sealing material is filled in a gap (joint) formed between adjacent siding boards and the siding boards are joined together. Many sealing methods as shown in Fig. 1 have been conventionally performed. However, recently it has been noticed that the construction is easy and the exterior quality of the exterior wall after construction is good, and the siding board is sealed by increasing the water-stopping property by attaching a dedicated joint to the inside of the joint. Sealing-less methods of joining without materials are becoming mainstream.

Further, as an example of the metal fitting attached to the joint portion, there is a metal fitting 103 called a “hat-shaped joiner” having a hat shape as shown in FIG. 7 (also in FIG. 8 of Patent Document 1 below). Disclosed). And this metal fitting 103 forms the recessed part 104 called a "shear" in the inside of the butt | matching part of the siding boards 101 and 102 to join, and it attaches using this recessed part 104. FIG.
Specifically, as shown in FIG. 7, a fitting convex portion 106 in which a vent hole 105 is formed inside the concave portion 104 and a wall surface portion on the surface side of the building structural frame 108 through a wood base 107 and the like. The joint fitting 103 is formed by integrally forming a mounting seat plate 109 attached to the base plate. And, at the corner of the building and the corner of the building, two plane siding boards and one corner siding board are joined, so there are multiple joints at positions that are very close in structure. A plurality of metal fittings 103 were used for each joint portion.

Japanese Patent Laid-Open No. 11-311010

In this way, in exterior wall construction at the corners and corners of buildings, a plurality of joint hardware is used individually for each joint even though there are multiple joints in the structure. For this reason, it has been necessary to perform a time-consuming installation work of the joint hardware several times.
In addition, in the above-described sealingless method, the construction is relatively easy and the appearance of the outer wall of the building after construction is excellent, but intrusion of rainwater or the like into the building becomes a problem. And if rainwater penetrates into the inside of the siding board and reaches the timber base and soaks into the building structure frame inside it, the building structure frame will be seriously damaged. Always sought.

  The present invention has been made on the basis of such points, and the object of the present invention is to cope with a sealingless construction method that is easy to construct and excellent in appearance after construction. In addition, it is possible to improve the workability and the water-stopping performance of the joint portion, and it is an inexpensive and easy-to-construction and low-part-number joint building wall joint, a building exterior wall joint structure including the joint, and the joint An object of the present invention is to provide a method for joining outer walls of a building which is executed when a structure is constructed.

  In order to achieve the above object, a building outer wall connector according to claim 1 of the present invention is arranged in a state in which a first board piece extending in a first direction and a second board piece extending in a second direction are crossed. A corner siding board, a first flat part siding board joined to the end of the first board piece via a first joint, and a second joint to the end of the second board piece The second flat surface siding board to be joined to the outer surface of the corner base material disposed at the corner of the building, the joint of the outer wall of the building, With respect to the first receiving recess formed at the inner side of the second joint and the first fitting convex portion arranged in a state where at least part of the first receiving recess is formed toward the first joint recess With at least a portion of it A second fitting convex portion, a first blade plate arranged along the first side surface of the corner portion base material facing the first joint, and a corner portion base facing the second joint A first vane disposed along the second side surface of the member, and a mounting seat for a corner that is bent and connected in an L shape in a mountain-folded state, and the first fitting The convex portion, the second fitting convex portion, and the protruding corner mounting seat plate are formed of an integral member.

  According to a second aspect of the present invention, there is provided a building exterior wall connector including a first plane portion siding board extending in a first direction and a second plane portion siding board extending in a second direction at each end. The first auxiliary base material extending in the first direction and the second direction extending in the second direction from the corner base material disposed at the corner of the building in a state of crossing through the third joint. 2 It is a building outer wall joint used when attached to each outer surface of the auxiliary base material, and at least a part thereof enters the third receiving recess formed inside the third joint. A third fitting convex portion disposed in a state, a first blade plate disposed along the outer surface of the first auxiliary base material, and a first member disposed along the outer surface of the second auxiliary base material. 2 blades are bent and connected in an L shape with a valley folded Includes a inlet corner for mounting seat plate and the said third fitting projections and internal corners for mounting seat plate is characterized in that it is constituted by an integral member.

  The building outer wall connector according to claim 3 is the building outer wall connector according to claim 1 or 2, wherein the first fitting convex portion, the second fitting convex portion, and the third fitting convex portion are: The first fitting protrusion formed by bending the same plate-like member as the protruding corner mounting seat plate or the inner corner mounting seat plate into a U shape, and bent into the U shape. The water stop material is disposed between the first receiving concave portion and the second receiving concave portion or between the third receiving concave portion and the outside of the first fitting convex portion and the third fitting convex portion. The space for this is formed.

  According to a fourth aspect of the present invention, there is provided a building outer wall connector according to the third aspect, wherein the space is formed to be smaller than the thickness of the water blocking material before being arranged. The water-stopping material is formed in a size that is accommodated in a compressed state when the water-material is disposed.

  Moreover, the building outer wall connector according to claim 5 is the building outer wall connector according to any one of claims 1 to 4, wherein the building outer wall connector is formed of a galvalume steel plate. To do.

  According to a sixth aspect of the present invention, there is provided a corner siding board in which a first board piece extending in a first direction and a second board piece extending in a second direction are crossed. A first plane part siding board joined to the end of the first board piece via a first joint, and a second plane part joined to the end of the second board piece via a second joint. A siding board, and a building exterior wall joint structure used in the case of being attached to an outer surface of a corner base material disposed at a corner of a building, each of the first direction and the second direction A corner siding board in which a recessed groove-shaped recess having a predetermined depth is formed inside the butt end, and a position facing the butt end having the recess of the corner siding board on the first joint side. Flat bump A position facing a butt end having a concave portion on the second joint side of the first siding board for the corner portion and a first siding board for forming the first receiving recess between the concave portion and the concave portion. A second siding board for forming a second receiving recess between the flat receiving end and the first recess, and a first fitting protrusion disposed in the first receiving recess, Outgoing corners arranged along the second fitting convex part arranged in the second receiving concave part, the first side face along the first direction of the corner portion base material, and the second side face along the second direction. A mounting seat for the building, and a joint of the building outer wall, between the first receiving recess and the first fitting protrusion, and between the second receiving recess and the second fitting protrusion. A water-stopping material accommodated in a compressed state in each formed space, and the building outer wall Connectors is characterized in that a bonding tool for building exterior walls according to any one of claims 1 or 3 to 5.

  According to a seventh aspect of the present invention, there is provided a structure for joining a building exterior wall, wherein a first plane portion siding board extending in a first direction and a second plane portion siding board extending in a second direction are formed at respective ends. A first auxiliary base material extending in the first direction and a second direction extending from the corner base material disposed in the corner of the building in a state of crossing through the third joint. It is a joint structure of the building outer wall used when it is attached to each outer surface of the second auxiliary base material, and a recessed portion having a predetermined depth is formed inside the butt end in the first direction. The first flat surface siding board and a flat joint surface at a position facing the abutting end of the first flat surface portion siding board having the concave portion, and a third joint is formed between the joint surface and the concave portion. Second plane part forming a receiving recess A siding board, a third fitting convex portion disposed in the third receiving concave portion, an outer corner mounting seat plate disposed along the outer surface of the first auxiliary base material and the outer surface of the second auxiliary base material And a water-stopping material accommodated in a compressed state in a space formed between the third receiving concave portion and the third fitting convex portion. A connector is the connector of the building in any one of the said Claims 2-5, It is characterized by the above-mentioned.

  The building outer wall joint structure according to claim 8 is the synthetic structure according to claim 6 or 7, wherein the water blocking material exhibits strong water blocking in a compressed state and has appropriate water absorption. It is formed of a rubber-based or synthetic resin-based elastic foam.

  Further, the building outer wall joint structure according to claim 9 is the building outer wall joint structure according to claim 8, wherein the water-stopping material is a semi-independent semi-continuous cell type mainly composed of ethylene / propylene / diene rubber (EPDM). It is characterized by being formed of a synthetic rubber foam.

  According to a tenth aspect of the present invention, a method for joining building outer walls uses a siding board at the corner of a building structural frame using the construction structure for building outer walls according to any one of the sixth, eighth and ninth aspects. A method of joining building outer walls, which is performed when performing outer wall construction, and a first side surface extending in a first direction and a second side of a corner base material located at a protruding corner of a building structural frame for performing outer wall construction. A fitting installation step for attaching the fitting on the outer wall of the building to the outside corner mounting seat plate in a state where the auxiliary housing is interposed directly or along the second side surface extending in the direction of the first fitting, and the first fitting A fixing bracket installation step of attaching a fixing bracket to an intermediate position of the protruding corner mounting seat plate that does not have a convex portion and a second fitting convex portion; and a first fitting convex portion and a second fitting of the joint of the building outer wall Water-stopping material covering and covering the water-stopping material so as to wrap around the joint In the placing step and the first fitting convex portion and the second fitting convex portion covered with the water-stopping material, the first receiving concave portion and the second receiving concave portion were fitted, respectively, to compress the water-stopping material. And a siding board installation step for attaching the siding board for the corner portion, the siding board for the first plane portion, and the siding board for the second plane portion using the fixing bracket. Is.

  The building outer wall joining method according to claim 11 is a case where an outer wall construction using a siding board at the corner of a building structural frame is performed using the building outer wall joining structure according to any one of claims 7 to 9. The outer surface of the first auxiliary base material extending in the first direction from the corner base material located at the corner of the building structure frame for performing the external wall construction, Joiner installation step for attaching the joint of the building outer wall to the corner mounting seat directly or via the auxiliary housing along the outer surface of the second auxiliary base material extending in the second direction And a fixing bracket installation step of attaching a fixing bracket to the remaining position of the mounting corner mounting seat without the third fitting convex portion, and a third fitting convex portion of the joint on the outer wall of the building. Water stop material installation process to cover and cover the water stop material A siding board for the first flat surface portion using the fixing bracket, with the third receiving concave portion fitted into the third fitting convex portion covered with the water-stopping material, and the water-stopping material being compressed. And a siding board installation step for attaching the siding board for the second flat surface portion.

And the following effects are acquired by the said means. In other words, according to the building outer wall connector of the present invention, a siding board can be used in which there are no recesses or gaps on the surface of the joint. The sealingless method can be applied. In addition, the mounting strength of the building joint is improved by providing large mounting seats that straddle the two side surfaces of the corner base material and the two outer surfaces of the first auxiliary base material and the second auxiliary base material. Installation work becomes easy.
In addition, when a plurality of fitting protrusions are provided on the mounting seat plate, the joint work of joints existing at extremely close positions can be performed at once using a single building connector. This makes it possible to reduce the number of parts and the number of mounting steps.

Further, when the building connector is formed by bending a single plate-like member, it is possible to provide a building connector that is easy to mold and inexpensive. In particular, when a building connector is formed using a material that is easy to form and inexpensive, such as a galvalume steel plate, the cost of parts can be further reduced.
In addition, when a space of a predetermined size is formed between the fitting convex part and the receiving concave part to place the water stop material in a compressed state, the water stop material is compressed in the compressed state using the space. Since it can be installed, the water-stopping property by the water-stopping material is improved, and the possibility that rainwater or the like entering from the joint part of the siding board enters the building can be reduced.

Further, according to the joint structure of the building outer wall of the present invention, the joint of the building outer wall in which the fitting convex portion and the mounting seat plate are integrated, the receiving concave portion formed inward of the joint portion of the siding board, and the stop Applying a sealingless construction method, which is easy to construct and has an excellent appearance after construction, to the exterior wall construction at the corner of the building or at the corner of the building by combining the water material, the exterior wall with excellent water-stopping is low-cost and short-term It becomes possible to construct between.
As a water-stopping material, the main component is a synthetic rubber-based or synthetic resin-based elastic foam, such as ethylene / propylene / diene rubber (EPDM), which exhibits a strong water-stopping property in a compressed state and has an appropriate water absorption. When semi-independent and semi-open cell type synthetic rubber foam is used, the water-stopping property is further improved, preventing intrusion of rainwater into the building, and rainwater entering the water-stopping material in a bowl-shaped space It is also possible to obtain the action of discharging to the outside from the drain outlet at the lower end.

In addition, according to the method for joining building outer walls of the present invention, the building corner and the corner of the building are basically divided into four steps including a joint fitting installation step, a fixing bracket installation step, a waterstop material installation step, and a siding board installation step. Since the siding board can be joined at the same time, the troublesome filling process of the sealing material provided in the conventional sealing method is no longer required, and the workability of the outer wall construction at the corner and the corner of the building is improved. To do. In addition, the exterior quality of the building outer wall after construction is good because it can be applied to the sealing-less construction method, and the combination of the fitting convex part, the receiving concave part and the waterproofing material provided in the compressed state greatly increases the water-stopping property of the building outer wall. To improve.
In addition, when working on an outer wall that has multiple joints at the corner of the building or at the corner of the building, the work man-hours can be achieved by using a joint on the outer wall of the building in which multiple fitting projections and mounting seats are integrated. Thus, the working time can be shortened.

It is a figure which shows the 1st Embodiment of this invention, and is a perspective view which shows a part of building which applied the joining structure of the building outer wall of this invention. BRIEF DESCRIPTION OF THE DRAWINGS It is a figure which shows the 1st Embodiment of this invention, and is sectional drawing which shows a part of building outer wall to which the joining structure of the building outer wall of this invention is applied. It is a figure which shows the 1st Embodiment of this invention, and is a plane sectional view which shows the joining structure of the building outer wall of this invention. It is a figure which shows the 2nd Embodiment of this invention, and is a plane sectional view which shows the joining structure of the building outer wall of this invention. It is a figure which shows the 3rd Embodiment of this invention, and is a block diagram which shows the joining method of the building outer wall of this invention. It is a plane sectional view which shows an example of the joining structure of the building outer wall applied to a plane part. It is a figure which shows a prior art example, and is a plane sectional view which shows an example of the joining structure of the conventional building outer wall.

Hereinafter, the present embodiment will be described with reference to the three embodiments of the first embodiment shown in FIGS. 1 to 3, the second embodiment shown in FIG. 4, and the third embodiment shown in FIG. 5. The contents of the joint of the building outer wall, the joint structure of the building outer wall provided with the joint of the building outer wall, and the method of joining the building outer wall executed when constructing the joint structure of the building outer wall will be described in detail. .
In the following description, the first embodiment applied to the corner of the building is taken as an example, and the joint of the building outer wall of the present invention and the joint of the building outer wall of the present invention including the joint of the building outer wall are described. A specific structure of the structure and its operation will be described. Moreover, in 2nd Embodiment, the joining structure of the building outer wall provided with the joining tool of the building outer wall which differs in a structure from the said 1st Embodiment applied to the corner of a building, and the joining tool of this building outer wall The configuration and the operation thereof will be described based on the difference from the first embodiment.

In the third embodiment, the building outer wall joining method of the present invention is first described by taking as an example the case of building the building outer wall joining structure of the first embodiment shown in FIGS. Then, the case where the joint structure of the building outer wall of 2nd Embodiment shown in the said FIG. 4 is constructed is demonstrated based on the difference with the said aspect.
Furthermore, in another embodiment, reference is made to the structure of the joint structure of the building outer wall and the joint structure of the building outer wall, which is partially different from the above three embodiments.

(1) 1st Embodiment (refer FIGS. 1-3)
(A) Configuration of Building Outer Wall Joiner 1A of the building outer wall according to the present embodiment includes a first board piece 6A extending in the first direction A and a second board piece 6B extending in the second direction B. A corner siding board 2C arranged in a crossed and bent shape, and a first flat part siding board 2A joined to the end of the first board piece 6A via a first joint 3A. And the second plane siding board 2B joined to the end of the second board piece 6B via the second joint 3B, and the outer surface of the corner base material 20 disposed at the protruding corner 15a of the building 12 It is a connector of the building outer wall used when attaching to the 1st side surface 20a and 2nd side surface 20b which become.

  Specifically, the building outer wall connector 1A is arranged in a first fitting recess 4A formed at the inside of the first joint 3A so that at least a part thereof is inserted. 5A of 2nd fitting convex parts arrange | positioned in the state which at least one part entered with respect to 5 A of convex parts, and the 2nd receiving recessed part 4B formed inside the said 2nd joint 3B, and the said 1st The first wing plate 10a disposed along the first side surface 20a of the corner base material 20 facing the joint 3A, and the second side surface 20b of the corner base material 20 facing the second joint 3B. The second vane plate 10b arranged so as to be along is basically configured by including a protruding corner mounting seat plate 10A which is bent and connected in an L shape in a mountain-folded state.

Further, in the present embodiment, the first fitting convex portion 5A, the second fitting convex portion 5B, and the protruding corner mounting seat plate 10A are formed of an integral member, and as an example, a single galvalume steel plate is bent. The first fitting convex portion 5A, the second fitting convex portion 5B, and the protruding corner mounting seat plate 10A are formed.
Among these, the 1st fitting convex part 5A and the 2nd fitting convex part 5B are bending the said galvalume steel plate which is the same single plate-like member as the said mounting corner mounting seat board 10A by making a U-shape. Is formed.

  And the water stop which mentions later between the said 1st receiving recessed part 4A and the 2nd receiving recessed part 4B on the outer side of 5 A of 1st fitting convex parts and the 2nd fitting convex part 5B bent in the U shape. A space 27 having a U-shape in plan view for arranging the material 23 is formed. A rectangular space with a rectangular cross section is also formed inside the first fitting convex portion 5A and the second fitting convex portion 5B, and this space is used as a vent or the like.

Further, the space 27 formed outside the first fitting convex portion 5A and the second fitting convex portion 5B is formed to be smaller than the thickness of the water-stopping material 23 before being arranged, When the material 23 is arranged, the water stop material 23 is formed in a size that can be accommodated in a compressed state.
In the present embodiment, the length (width dimension) in the first direction A of the first blade 10a of the mounting corner mounting seat 10 is the first length of the first side surface 20a of the corner base material 20. It is set as an example so as to be the same length as the length (width dimension) in the direction A. Similarly, the length (width dimension) in the second direction B of the second blade 10b is the length (width) in the second direction B of the second side face 20b of the corner base material 20 in the present embodiment. It is set as an example so as to be the same length as (dimension).

In addition, on the mounting corner mounting seat 10 </ b> A, the joint 1 </ b> A of the outer wall of the building is a column member serving as the corner base material 20 which is a part of the building structural housing 7, and the auxiliary housing 8 serving as an intermediate member. A mounting hole (not shown) for mounting with screws 17 is formed at 8 etc.
(B) Structure of Building Exterior Wall Joining Structure A building exterior wall joining structure 11A according to the present embodiment uses the above-described building exterior wall joint 1A to construct the above-described three types of siding boards 2A, 2B, and 2C. 12 is a joint structure of an outer wall of a building that is used when installed at twelve protruding corners 15a.

  Specifically, the building outer wall joining structure 11A has a recess groove-shaped recess 29C, 29C having a predetermined depth inside the butted ends 28C, 28C in the first direction A and the second direction B, respectively. The corner part siding board 2C and the corner part siding board 2C having the flat abutting end 28A at a position opposite to the abutting end 28C having the concave part 29C on the first joint 3A side are provided. 29C at a position facing the butt end 28C having the first receiving recess 4A forming the first receiving recess 4A and the recess 29C on the second joint 3B side of the corner siding board 2C. A second flat surface siding board 2B having a flat butt end 28B and forming a second receiving recess 4B with the recess 29C; Spaces formed between the fitting 1A, the first receiving recess 4A and the first fitting protrusion 5A, and the second receiving recess 4B and the second fitting protrusion 5B. 27, 27 is provided with a water stop material 23 accommodated in a compressed state.

The thicknesses of the corner siding board 2C, the first planar siding board 2A, and the second planar siding board 2B are, for example, 14 mm to 21 mm. The lengths (width dimensions) of the first direction A and the second direction B of the corner portion siding board 2C are the first direction A and the second direction of the columnar base material 20. The length is set to be slightly shorter than the length (width dimension) of B, and accordingly, the first joint 3A described above is located at a position opposite to the first side surface 20a and the second side surface 20b of the corner base material 20. And the second joint 3B are respectively positioned.
The length (width dimension) in the first direction A of the first plane portion siding board 2A and the length (width dimension) in the second direction B of the second plane portion siding board 2B are for the corner portion. When the siding board 2C is set as the starting point, the predetermined size is cut in advance. However, when the corner siding board 2C is set as the end point, the siding board 2C has an appropriate size cut at the site. .

Further, the dimensions of the recesses 29C and 29C formed at the abutting ends 28C at both ends of the corner portion siding board 2C are the same as the first fitting protrusions 5A and the second fitting protrusions in the above-described building outer wall connector 1A. It becomes a predetermined dimension in consideration of the size of 5B and the thickness of the water stop material 23, and is set to a dimension capable of accommodating the water stop material 23 in a compressed state as described above.
As the water-stopping material 23, a synthetic rubber-based or synthetic resin-based elastic foam which exhibits a strong water-stopping property in a compressed state and has an appropriate water absorption can be adopted, and ethylene / propylene / diene rubber (EPDM) is mainly used as a suitable material. A semi-independent semi-open cell type product name “Epto Sealer” manufactured by Nitto Denko Corporation, which is a semi-independent semi-open cell type synthetic rubber foam as an ingredient, can be applied. Further, as a synthetic resin-based elastic foam, a product name “green seal” which is a functional sealing foam (polyether-based polyurethane foam (PUF)) manufactured by Toyo Quality One Co., Ltd. is applicable as an example.

  In addition, in the present embodiment, the corner siding board is utilized by utilizing the remaining space of the protruding corner mounting seat 10A that does not have the first fitting convex portion 5A and the second fitting convex portion 5B. Two fixing brackets 9 for supporting 2C, one fixing bracket 9 for supporting the end portion of the first plane portion siding board 2A near the first joint 3A, and the second plane portion. One fixing bracket 9 for supporting the end portion of the siding board 2B near the second joint 3B is provided as a middle member.

Further, one auxiliary casing 8 having the same dimensions as the first side surface 20a and the second side surface 20b is provided as an intermediate member, one for each of the first side surface 20a and the second side surface 20b of the corner base material 20. It has been.
Furthermore, in this embodiment, a moisture-permeable waterproof sheet 25 is pasted between the corner base material 20 and the two auxiliary casings 8 and 8. The moisture-permeable waterproof sheet 25 is a sheet that does not allow liquid water to pass through but allows gas vapor (humidity) or dry air to pass through.
Incidentally, as the moisture permeable waterproof sheet 25, a polyethylene non-woven sheet having a thickness of about 0.1 to 0.5 mm defined in Japanese Industrial Standard JIS A6111 is applicable as an example.

Further, as shown in FIG. 6, another planar siding board 2D is joined to the end portion in the first direction A of the first planar siding board 2A, and the second planar siding board 2B Another planar siding board (not shown) is also joined to the end in the second direction B.
Further, in these joint portions, the same groove-shaped concave portion 29D as provided for the first joint 3A and the second joint 3B described above and the flat butt end 28D of the other flat portion siding board 2D. A receiving recess 4D can be formed, and a joint outer wall having a shape as shown in FIG. 6 is provided, which includes a fitting protrusion 5D that fits into the receiving recess 4D and a mounting seat plate 10D having a shorter length. The tool 30 can be installed. It should be noted that a joint fitting 103 having a hat-shaped fitting convex portion 106 as shown in FIG. 7 may be applied as the building outer wall joint 30 applied to the joint 3D of the flat portion.

Next, in addition to the function of the building outer wall joint 1A and the building outer wall joint structure 11A according to the present embodiment configured as described above, rainwater or the like when rainwater or the like enters the building outer wall joint structure 11A. The flow of these will be described. The corner portion siding board 2C, the first flat surface portion siding board 2A, and the second flat surface portion siding board 2B are joined together with almost no gap therebetween. However, rainwater and the like enter the inner spaces of the siding boards 2C, 2A, and 2B even from a slight gap formed between the first joint 3A and the second joint 3B.
Rainwater or the like that has entered through the gap reaches the first receiving concave portion 4A and the second receiving concave portion 4B, and the first fitting convex portion 5A and the second fitting arranged in the receiving concave portions 4A and 4B. It reaches the surface of the water blocking material 23 accommodated in a compressed state in the spaces 27 formed between the joint convex portions 5B.

Since the water-stopping material 23 exhibits extremely high water-stopping properties by being arranged in a compressed state, the infiltration of the rainwater or the like further is restricted. A part of rainwater or the like that has reached the surface of the water stop material 23 is absorbed in the water stop material 23, flows in the water stop material 23 downward in the longitudinal direction Z, and is provided at the lower end of the space 27. It is discharged to the outside from the drainage port 33 shown in FIG.
Furthermore, even if rainwater or the like may enter the space between the siding boards 2C, 2A and 2B and the mounting corner mounting seat 10A through the water-stopping material 23, the moisture-permeable waterproof sheet 25 This prevents rainwater or the like from entering the corner base material 20 side.

Further, according to the present embodiment, since the siding board 2 with no recesses or gaps on the surface of the joint portion can be used, the sealing for joining the siding board 2 without a sealant during the outer wall construction of the projecting corner 15a of the building 12 is possible. The less method can be applied. Moreover, the mounting strength of the building joint 1A of the building is improved by providing an L-shaped large-sized corner mounting seat 10A extending over the two side surfaces 20a, 20b of the corner base material 20, and the siding board The installation work of 2 becomes easy.
Further, by providing a plurality of fitting projections 5A, 5B to the above-mentioned mounting corner mounting seat 10A, it is possible to perform the joint operation of the joints 3A, 3B existing at extremely close positions in a single building. It is possible to carry out at once using the outer wall connector 1A, and it is possible to reduce the number of parts and the number of mounting steps. Further, since the building outer wall connector 1A is formed by bending a single plate-like member, it is possible to provide a building outer wall connector that is easy to form and inexpensive.

(2) Second embodiment (see FIG. 4)
(A) Structure of Building Exterior Wall Joiner A building exterior wall joint 1B according to the present embodiment includes a first plane portion siding board 2A extending in a first direction A and a second plane extending in a second direction B. The building siding board 2 </ b> B is a joint for a building outer wall disposed at the corner 15 b of the building 12 in a state of being joined in an L shape via a third joint 3 </ b> C formed at each end. And in embodiment of illustration, the 1st auxiliary | assistant base material 21 and 2nd direction which are extended in the 1st direction A from the pillar material used as the base material 20 for corner parts arrange | positioned in the corner 15b of the building 12 The joint of the building outer wall used when attaching to each outer surface of the 2nd auxiliary | assistant base material 22 extended to B is shown in figure.

  Specifically, the building outer wall connector 1B has a third fitting protrusion disposed in a state where at least a part thereof enters a third receiving recess 4C formed inside the third joint 3C. Part 5C, a first blade 10a disposed along the outer surface of the first auxiliary base material 21, and a second blade 10b disposed along the outer surface of the second auxiliary base material 22, Is basically configured by including a corner mounting seat plate 10B which is bent and connected in an L shape in a valley folded state.

In the present embodiment as well, as in the first embodiment, the third fitting convex portion 5C and the mounting corner mounting seat 10B are formed of an integral member. As an example, a single galvalume steel plate is bent. Thus, the third fitting convex portion 5C and the mounting corner mounting seat plate 10B are formed.
Among these, the 3rd fitting convex part 5C is formed by bend | folding the said galibarium steel plate which is the same plate-shaped member as the said mounting corner mounting seat board 10B in the U shape, and this space is Used as a vent or the like.

A space having a U-shape in plan view for disposing the water-stopping material 23 between the third receiving concave portion 4C and the third fitting convex portion 5C bent in a U-shape. 27 is formed. Further, a hook-shaped space having a rectangular cross section is also formed inward of the third fitting convex portion 5C.
The size of the space 27 formed outside the third fitting convex portion 5C and the accommodation state of the water stop material 23 arranged in the space 27 are the same as those described in the first embodiment. It is the same. The mounting corner mounting seat 10B is also provided with a mounting hole (not shown) similar to that provided in the outgoing corner mounting seat 10A. The first auxiliary base material 21 and the second auxiliary base material 22 are attached directly or via auxiliary housings 8 and 8 as intermediate members as in the illustrated embodiment.

(B) Configuration of Building Exterior Wall Joining Structure The building exterior wall joining structure 11B according to the present embodiment uses the building exterior wall joining tool 1B described above to connect the two types of siding boards 2A and 2B described above to the building 12. It is a joint structure of the building outer wall used when installing in the entrance corner 15b.
Specifically, the building outer wall joining structure 11B includes a first plane portion siding board 2A in which a recessed groove 29A having a predetermined depth is formed in the first direction A inward of the butted end 28A. The first flat siding board 2A has a flat joining surface at a position facing the butting end 28A having the recess 29A, and a third receiving recess 4C is formed between the joining surface and the recess 29A. Stops accommodated in a compressed state in a space 27 formed between the second flat section siding board 2B, the building outer wall connector 1B, the third receiving recess 4C and the third fitting protrusion 5C. The water material 23 is basically provided.

The thickness and length (width dimension) of the first plane portion siding board 2A and the second plane portion siding board 2B are the same as those in the first embodiment described above, and for the first plane portion. The dimensions of the recess 29A formed at the butt end 28A of the siding board 2A and the usage example of the water stop material 23 are the same as those described in the first embodiment.
In addition, in the present embodiment, as in the first embodiment, the first plane is utilized by utilizing the remaining space that does not have the third fitting convex portion 5C in the mounting corner mounting seat 10B. One fixing bracket 9 for supporting the end portion near the third joint 3C of the siding board 2A for the section, and the end portion near the third joint 3C of the siding board 2B for the second plane section. Two fixing brackets 9 in total, each having one fixing bracket 9, are provided as intermediate members.

Further, one auxiliary housing 8 is provided as an intermediate member for each of the outer surface of the first auxiliary base material 21 and the outer surface of the second auxiliary base material 22, and the outer surfaces of the two auxiliary housings 8, 8. On the other hand, the structure to which the connector 1B of the building outer wall is attached is adopted.
Further, in the present embodiment, as in the first embodiment, a moisture permeable waterproof sheet 25 is provided between the first auxiliary base material 21 and the second auxiliary base material 22 and the two auxiliary casings 8 and 8. Attached. The configuration and usage example of the moisture permeable waterproof sheet 25 are the same as those described in the first embodiment.
Further, although not shown in the drawings, the end of the first plane portion siding board 2A in the first direction A and the end portion of the second plane portion siding board 2B in the second direction B are not shown. Other siding boards similar to those described in the first embodiment are joined, and these joints are connected to separate building outer wall joints similar to those described in the first embodiment. 30 can be installed.

And the water stop similar to 1st Embodiment mentioned above is exhibited also by the joining structure 1B of the building outer wall connector 1B and building outer wall by this embodiment comprised in this way, The building 12 of FIG. A sealing-less construction method in which a concave portion or a gap does not appear on the surface of the joint portion can be applied during the construction of the outer wall of the corner 15b. In addition, by providing a large corner mounting seat 10B that crosses the first auxiliary base material 21 and the second auxiliary base material 22 arranged so as to intersect each other in an L shape. The mounting strength of the building outer wall connector 1B is improved, and the mounting operation of the siding board 2 is facilitated.
Furthermore, since the building outer wall connector 1B is formed by bending a single plate-like member as in the first embodiment, it is possible to provide a building outer wall connector that is easy to form and inexpensive. Become.

(3) Third embodiment (see FIG. 5)
Next, (A) the case where the outer wall construction of the projecting corner of the building is performed using the building outer wall joint structure 11A according to the first embodiment described above, and the building outer wall according to the second embodiment described above. The method for joining the building outer walls according to the present embodiment will be specifically described separately for (B) the case where the outer wall construction of the corner of the building is performed using the joint structure 11B.
The building outer wall joining method described here is a siding board joining method executed when the outer wall construction is performed at the corner 15a and the corner 15b of the building 12 using the siding board 2. It is a method of joining building outer walls based on a sealingless construction method that does not use materials.

(A) When performing exterior wall construction at the corner of a building (see Figs. 3 and 5)
The building outer wall joining method described here is for the case where the outer wall construction using the siding board 2 is performed on the projecting corner 15a of the building structural frame 7 using the building outer wall joining structure 11A according to the first embodiment described above. This is a method of joining building outer walls.
Specifically, a connector installation step P2 for attaching the connector 1A on the outer wall of the building, a fixture installation step P3 for installing the fixture 9, and a water stop material installation step P4 for installing the water stop material 23 in the space 27, The building exterior wall joining method according to the present invention is basically configured by including four steps including a siding board installation step P5 for attaching the siding board 2.
Moreover, in this Embodiment, the joining method of a building outer wall is comprised by the total 5 process provided with the moisture-permeable waterproof sheet sticking process P1 which pastes the moisture-permeable waterproof sheet 25 as a pre-process of the said connector installation process P2. ing. Hereinafter, these steps will be specifically described.

<Moisture permeable waterproof sheet application process>
The moisture permeable waterproof sheet attaching step P1 is a step of attaching the moisture permeable waterproof sheet 25 to the surface of the building structure 7.
That is, in the present embodiment, the moisture permeable waterproof sheet 25 is pasted so as to cover the first side surface 20a and the second side surface 20b of the pillar material which is the corner base material 20 located at the protruding corner 15a of the building structural body 7. To do.

<Connector installation process>
In the connector installation step P2, the two auxiliary casings 8 and 8 are arranged along the first side surface 20a extending in the first direction A and the second side surface 20b extending in the second direction B of the corner base material 20. This is a process of attaching the fitting 1A on the outer wall of the building while facing the mounting seat 10A for the corner in the interposed state.
That is, the auxiliary casings 8 and 8 are respectively attached to the moisture-permeable waterproof sheets 25 attached to the first side surface 20a and the second side surface 20b of the corner base material 20, and the outer wall of the building is attached to the outer surfaces of these auxiliary casings 8 and 8. Attach the mounting corner mounting seat 20A in the connector 1A using screws 17 or the like. In addition, the attachment position of the said connecting tool 1A of the said building outer wall assumes the position of 4 A of 1st receiving recessed parts and the 2nd receiving recessed part 4B which are formed with respect to the siding boards 2C, 2A, 2B to be joined. The positioning is determined so that the first fitting convex portion 5A and the second fitting convex portion 5B are positioned.

<Fixing bracket installation process>
The fixing fitting installation step P3 is a step of attaching the fixing fitting 9 to the remaining position of the protruding corner mounting seat plate 10A that does not have the first fitting convex portion 5A and the second fitting convex portion 5B.
That is, in the present embodiment, a total of four fixing members 9, such as one on each side of the first fitting convex portion 5A and one on the left and right sides of the second fitting convex portion 5B, are used. And attach.

<Waterproofing material installation process>
The waterstop material installation step P4 is a step of covering and covering the waterstop material 23 so as to surround the first fitting convex portion 5A and the second fitting convex portion 5B of the connector 1A on the outer wall of the building.
That is, the water stop material 23 is installed in a state of being folded into a U shape in accordance with the outer shape of the first fitting convex portion 5A and the second fitting convex portion 5B.

<Siding board installation process>
In the siding board installation step P5, the first receiving concave portion 4A and the second receiving concave portion 4B are fitted into the first fitting convex portion 5A and the second fitting convex portion 5B covered with the water blocking material 23, respectively. It is a step of attaching the corner siding board 2C, the first flat part siding board 2A, and the second flat part siding board 2B by using the fixing fitting 9 in a state where the water stop material 23 is compressed. .
In this case, the mounting positions of the three siding boards 2C, 2A, and 2B are generally determined by the first fitting convex portion 5A and the second fitting convex portion 5B in the building outer wall connector 1A. Fine adjustment by adjusting the locking position. And the relative position of the 1st fitting convex part 5A and the 2nd fitting convex part 5B with respect to 4A of 1st receiving recessed parts and the 2nd receiving recessed part 4B is made into a left-right symmetric position, and the compression state of the water stop material 23 becomes uniform. To.

And according to the joining method of the exterior wall of this aspect comprised in this way, the troublesome filling process of the sealing material provided in the conventional sealing construction method becomes unnecessary, and in the exit corner 15a of the building 12 Workability of outer wall construction is improved. Moreover, since it can respond | correspond to a sealing-less construction method, the external appearance quality of the building outer wall 13 after construction is favorable, The said 1st fitting convex part 5A and 1st receiving recessed part 4A, 2nd fitting convex part 5B, and 2nd receiving The combination of the recessed portion 4B and the water blocking material 23 accommodated in the space 27 in a compressed state greatly improves the water blocking performance of the building outer wall 13.
In addition, in the projecting corner 15a of the building 12, when the outer wall construction has a plurality of joints 3A and 3B, the building in which the plurality of fitting convex portions 5A and 5B and the projecting corner mounting seat plate 10A are integrated. By using the outer wall connector 1A, it is possible to reduce the man-hours for the outer wall work and shorten the work time.

(B) When performing exterior wall construction at the corner of a building (see Figs. 4 and 5)
The building outer wall joining method described here is for the case where the outer wall construction using the siding board 2 is performed on the corner 15b of the building structural frame 7 using the building outer wall joining structure 11B according to the second embodiment described above. This is a method of joining building outer walls.
Specifically, as in the case of (A) the outer wall construction at the corner of the building described above, the connector installation step P2, the fixing bracket installation step P3, the water stop material installation step P4, and the siding board installation step P5 The building outer wall joining method is basically configured by including the four steps, and in this embodiment, the building outer wall joining method is a total of five steps including the moisture permeable waterproof sheet attaching step 1 added thereto. It is configured. Hereinafter, these steps will be specifically described.

<Moisture permeable waterproof sheet application process>
The moisture permeable waterproof sheet attaching step P1 is a step of attaching the moisture permeable waterproof sheet 25 to the surface of the building structure 7.
In other words, in the present embodiment, the first auxiliary base material 21 extending in the first direction A and the second direction B extend from the corner base material 20 positioned at the corner 15b of the building structural body 7. A moisture permeable waterproof sheet 25 is attached so as to cover the outer surface of the second auxiliary base material 22.

<Connector installation process>
The connector installation step P2 includes an outer surface of the first auxiliary base material 21 extending in the first direction A and an outer surface of the second auxiliary base material 22 extending in the second direction B from the corner portion base material 20. This is a step of attaching the joint fitting 1B on the outer wall of the building with the auxiliary seat 8 interposed therebetween so as to reach the corner mounting seat 10B.
That is, the auxiliary casings 8 and 8 are respectively attached on the moisture-permeable waterproof sheets 25 attached to the outer surfaces of the first auxiliary base material 21 and the second auxiliary base material 22, and the outer wall of the building is attached to the outer surfaces of these auxiliary casings 8 and 8. The mounting corner mounting seat 20B in the connector 1B is mounted using screws 17 or the like. In addition, adjustment of the attachment position of the connector 1B of a building outer wall is performed similarly to the case where the outer wall construction of the projecting corner of the building of (A) mentioned above is performed.

<Fixing bracket installation process>
The fixing bracket installation step P3 is a step of mounting the fixing bracket 9 on the remaining position of the corner mounting seat 10B that does not have the third fitting convex portion 5C.
That is, in the present embodiment, a total of two fixing brackets 9 are attached using screws or the like, one at a time near both ends of the mounting corner mounting base plate 10B separated from the third fitting convex portion 5C.

<Waterproofing material installation process>
The water-stopping material installation step P4 is a step of covering and covering the water-stopping material 23 so as to wrap around the third fitting convex portion 5C of the connector 1B on the outer wall of the building.
That is, the water stop material 23 is installed in a state of being folded in a U shape in accordance with the outer shape of the third fitting convex portion 5C.

<Siding board installation process>
In the siding board installation step P5, the third fitting convex portion 5C covered with the water-stopping material 23 is fitted into the third receiving concave portion 4C to compress the water-stopping material 23, and the fixing bracket 9 is a step of attaching the first flat surface portion siding board 2A and the second flat surface portion siding board 2B.
The adjustment of the mounting position of the two siding boards 2A, 2B performed in this case is performed in the same procedure as that in the case of the outer wall construction of the projecting corner of the building (A) described above.

  And also by the method for joining the building outer walls according to this aspect configured as described above, the same action and effect as the case of performing the outer wall construction of the projecting corner of the building of (A) described above are exhibited, and the third fitting is performed. The combination of the convex portion 5C and the third receiving concave portion 4C and the water stop material 23 accommodated in the space 27 in a compressed state greatly improves the water stoppage of the building outer wall 13.

(4) Other Embodiments The building outer wall connector 1, the building outer wall bonding structure 11 and the building outer wall bonding method of the present invention are not limited to those of the above-described three embodiments, and the gist of the description. It is possible to change within.
For example, when the exit corner 15a and the entrance corner 15b of the building 12 are formed in a curved shape, the shapes of the exit corner mounting seat plate 10A and the entrance corner mounting seat plate 10B are curved in accordance with the shape. It is possible to have a different shape.
Similarly, when the projecting corner 15a and the entering corner 15b of the building 12 are formed to intersect with each other at an angle other than 90 °, the projecting corner mounting seat plate 10A and the entrance corner mounting seat are matched to the shape. It is possible to make a bent shape in which the crossing angle of the plate 10B is adjusted.
Further, as described in part in the above-described embodiment, the auxiliary casing 8 is omitted and the protruding corner mounting seat plate 10A is directly attached to the corner base material 20, or the corner mounting seat plate 10B. Can be directly attached to the first auxiliary base material 21 and the second auxiliary base material 22.

  The building outer wall joint, the building outer wall joint structure, and the building outer wall joining method according to the present invention are the manufacturing field of the building field and the building outer wall joint and siding board used in the outer wall construction. -It can be used in fields of use, etc., and can be applied to the ceiling-less construction method especially at the corners and corners of buildings.

DESCRIPTION OF SYMBOLS 1 Connector of building outer wall 2 Siding board 3 Joint 4 Receiving recessed part 5 Fitting convex part 6 Board piece 7 Building structural frame 8 Auxiliary frame (intermediate member)
9 Fixing bracket (intermediate member)
DESCRIPTION OF SYMBOLS 10 Mounting seat board 10a 1st blade board 10b 2nd blade board 11 Joint structure of building outer wall 12 Building 13 Building outer wall 15a Outer corner 15b Incoming corner 17 Screw 20 Corner part base material 20a First side surface 20b Second side surface 21 First Auxiliary base material 22 Second auxiliary base material 23 Waterproof material 25 Moisture permeable waterproof sheet 27 Space 28 Butt end 29 Recess 30 Building outer wall connector 33 Drain port A First direction B Second direction P1 Moisture permeable waterproof sheet Pasting process P2 Joiner installation process P3 Fixture installation process P4 Water-stopping material installation process P5 Siding board installation process Z Longitudinal direction

Claims (11)

A corner siding board disposed in a state in which a first board piece extending in a first direction and a second board piece extending in a second direction cross each other; and a first joint at an end of the first board piece A first plane part siding board joined via a second board part and a second plane part siding board joined via a second joint to the end of the second board piece. A fitting for the outer wall of a building used when attaching to the outer surface of the corner base material,
A first fitting convex portion arranged in a state where at least part of the first receiving concave portion formed inside the first joint is inserted;
A second fitting convex portion arranged in a state in which at least a part thereof enters the second receiving concave portion formed inward of the second joint;
Arranged along the first side face of the corner base material facing the first joint and along the second side of the corner base material facing the second joint. A second vane plate, and a mounting seat plate for a corner that is connected in a mountain-folded state,
The first and second fitting protrusions, the second fitting protrusion and the mounting corner mounting seat are constituted by an integral member. The first plane portion siding board extending in the first direction and the second plane portion siding board extending in the second direction intersect with each other via a third joint formed at each end. Used when attaching to the outer surfaces of the first auxiliary base material extending in the first direction and the second auxiliary base material extending in the second direction from the corner base material disposed in the corner. A building exterior wall joint,
A third fitting convex portion arranged in a state where at least part of the third receiving concave portion is formed inward of the third joint,
A first slat disposed along the outer surface of the first auxiliary base material and a second slat disposed along the outer surface of the second auxiliary base material are connected in a valley-folded state. A mounting seat for a corner,
The joint of the building outer wall, wherein the third fitting convex portion and the corner mounting seat are made of an integral member. The first fitting convex portion, the second fitting convex portion, and the third fitting convex portion are formed of the same single plate-like member as the protruding corner mounting seat plate or the inner corner mounting seat plate. It is formed by bending into a shape,
The first fitting convex part and the second fitting convex part and the third fitting convex part bent in the U-shape are respectively located between the first receiving concave part and the second receiving concave part or The joint for building outer walls according to claim 1 or 2, wherein a space for disposing a waterstop material is formed between the third receiving recess and the third receiving recess.   The space is formed to be smaller than the thickness of the water blocking material before being arranged, and is formed to have a size that can be accommodated in a compressed state when the water blocking material is arranged. The building outer wall connector according to claim 3, wherein   The building outer wall connector according to any one of claims 1 to 4, wherein the building outer wall connector is formed of a galvalume steel plate. A corner siding board disposed in a state in which a first board piece extending in a first direction and a second board piece extending in a second direction cross each other; and a first joint at an end of the first board piece A first plane part siding board joined via a second board part and a second plane part siding board joined via a second joint to the end of the second board piece. It is a joint structure of the building outer wall used when it is attached to the outer surface of the corner base material,
A corner siding board in which a recessed portion having a predetermined depth in the shape of a scribing groove is formed inward of each of the butted ends in the first direction and the second direction;
For the first flat surface portion having a flat butt end at a position facing the butt end having the concave portion on the first joint side of the siding board for the corner portion and forming a first receiving concave portion with the dent portion. With siding board,
For the second flat portion having a flat butt end at a position opposite to the butt end having the concave portion on the second joint side of the corner siding board and forming a second receiving dent portion with the concave portion. With siding board,
A first fitting convex portion disposed in the first receiving concave portion, a second fitting convex portion disposed in the second receiving concave portion, and a first side surface along a first direction of the corner portion base material; A fitting for the outer wall of the building having a mounting seat for a projected corner disposed along the second side surface along the second direction;
Water stop accommodated in a compressed state in each space formed between the first receiving recess and the first fitting protrusion and between the second receiving recess and the second fitting protrusion. With materials,
The building outer wall joint structure according to claim 1, wherein the building outer wall joint is the building outer wall joint according to claim 1. A building in a state in which the first plane portion siding board extending in the first direction and the second plane portion siding board extending in the second direction intersect with each other via a third joint formed at each end. When attaching to the outer surface of each of the first auxiliary base material extending in the first direction and the second auxiliary base material extending in the second direction from the corner base material disposed at the corner of the corner It is a joint structure of the building outer wall used,
A siding board for a first plane portion in which a recessed portion having a predetermined depth is formed inside the butted end in the first direction;
For the second planar portion having a flat joining surface at a position facing the butted end of the first planar portion siding board having a recess, and forming a third receiving recess between the joining surface and the recess. With siding board,
A third fitting convex portion disposed in the third receiving concave portion; and an outer corner mounting seat plate disposed along the outer surface of the first auxiliary base material and the outer surface of the second auxiliary base material. A joint on the outer wall of the building,
A waterstop material accommodated in a compressed state in a space formed between the third receiving concave portion and the third fitting convex portion,
The building outer wall joint structure according to any one of claims 2 to 5, wherein the building outer wall joint is the building joint according to any one of claims 2 to 5.   The said water stop material exhibits strong water stop in a compression state, and is formed by the synthetic rubber type | system | group or a synthetic resin type elastic foam provided with moderate water absorption, The claim 6 or 7 characterized by the above-mentioned. Bonding structure of building outer wall.   9. The joint structure of a building outer wall according to claim 8, wherein the water blocking material is formed of a semi-independent semi-open cell type synthetic rubber foam mainly composed of ethylene / propylene / diene rubber (EPDM). . A method for joining building outer walls, which is executed when an outer wall construction using a siding board is performed at the corner of a building structural frame using the joint structure of building outer walls according to claim 6 or 8, 9. And
Directly or by interposing an auxiliary housing along the first side surface extending in the first direction and the second side surface extending in the second direction of the corner base material located at the corner of the building structure housing that performs the outer wall construction A fitting installation step for attaching the fitting on the outer wall of the building by addressing the mounting seat for the corner in the
A fixing fitting installation step of attaching a fixing fitting to the remaining position of the mounting corner mounting seat plate that does not have the first fitting convex portion and the second fitting convex portion;
A water-stopping material installation step of covering and covering the water-stopping material so as to enclose the first fitting convex portion and the second fitting convex portion of the joint of the building outer wall;
With respect to the first fitting convex portion and the second fitting convex portion covered with the water-stopping material, the first receiving concave portion and the second receiving concave portion are fitted, respectively, and the water-stopping material is compressed, A siding board installation step for attaching a siding board for a corner portion, a siding board for a first flat surface portion, and a siding board for a second flat surface portion using a fixing bracket, and joining the outer walls of the building Method. A method for joining building outer walls, which is performed when an outer wall construction using a siding board is performed at a corner of a building structure using the joint structure of building outer walls according to any one of claims 7 to 9,
The outer surface of the first auxiliary base material extending in the first direction and the second auxiliary base material extending in the second direction from the corner base material located at the corner of the building structure frame for performing the outer wall construction A connector installation step for attaching a connector on the outer wall of the building by directing the auxiliary seat to the corner in a state where the auxiliary housing is interposed directly along the outer surface,
A fixing bracket installation step of attaching a fixing bracket to the remaining position of the mounting corner mounting plate not having the third fitting protrusion;
A waterproofing material installation step of covering and covering the waterproofing material so as to wrap around the third fitting convex part of the joint of the building outer wall;
A siding board for the first flat surface portion using the fixing bracket, with the third receiving concave portion fitted into the third fitting convex portion covered with the water-stopping material, and the water-stopping material being compressed. And a siding board installation step for attaching the siding board for the second flat surface portion.

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