Joint metal fitting for building outer wall

Abstract

To provide joint metal fittings for building outer wall that improve air permeability and water permeability at a joint part of a siding board, are easy to manufacture and inexpensive, and have superior workability and versatility.SOLUTION: Joint metal fittings 1 for building outer wall comprise: a first blade plate 14 which is provided between two members to be joined, and sets a joint width W therebetween; a second blade plate 24 which is connected to a base end side 14b of the first blade plate 14, extends obliquely toward an inward building structure skeleton 7 or auxiliary skeleton 8 so that a tip side 24a thereof is substantially aligned with a tip side 14a of the first blade plate 14, and located at a projection position O thereof; and a third blade plate 34 which is connected to the tip side 24a of the second blade plate 24, extends along an installation surface 9 for the inward building structure skeleton 7 or the auxiliary skeleton 8 so that a tip side 34a thereof is provided protruding more toward a tip side than a projection position P of the base end side 14b of the first blade plate 14, and fitted to the building structure skeleton 7 or the auxiliary skeleton 8 at a projection part 34c thereof.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present invention relates to a metal joint for building exterior walls that can be applied when using siding boards as exterior wall materials in exterior wall construction including exterior corners, interior corners, wall surfaces, window frames, and eaves of buildings. [Background technology]

[0002] When carrying out construction work on the exterior walls of buildings, siding boards such as those disclosed in the following Patent Documents 1 and 2 are widely used. Siding boards come in a wide variety of designs, textures, colors, sizes, and structures, and include siding boards for flat surfaces used to cladding the wall surfaces of building structural frames according to their installation location, as well as siding boards for corners used to cladding corners, including outside corners and inside corners, of building structural frames.

[0003] Furthermore, poor breathability and water permeability can cause the siding board to warp due to temperature differences, so there are siding boards with hollow holes that improve breathability and water permeability by providing a large number of hollow holes that run through the middle of the board thickness in the longitudinal direction, as shown in Patent Document 2. While the thickness of such siding boards was previously mainly 16 mm, thicker siding boards with a thickness of 18 mm have recently become mainstream.

[0004] Furthermore, when such siding boards are used to carry out exterior wall construction of a building, fittings for positioning the siding boards are attached to the pillars that form the building's structural frame via plates or other supporting frames. The most commonly used metal joints are those bent into a hat shape and called hat-shaped joiners, as shown in the following Patent Documents 1 and 2. Furthermore, even if siding boards with the aforementioned hollow holes are used, the desired breathability and water permeability cannot be achieved if the metal joints joining the siding boards are structured to block the aforementioned hollow holes. Therefore, as shown in Patent Document 2 below, hat-type joiners have been introduced that have a large number of ventilation and drainage holes, making them breathable and water-permeable. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Japanese Patent Application Publication No. 11-311010 [Patent Document 2] Japanese Patent Application Publication No. 10-37321 Summary of the Invention [Problem to be solved by the invention]

[0006] However, conventional hat-shaped joiners require bending the metal sheet three to four times, and when multiple ventilation and drainage holes are formed on the formed hat-shaped joiner using press punching or other processes, the labor required increases dramatically, which is a major factor in increasing the manufacturing and product costs of the joining hardware.

[0007] Furthermore, because the height of the hat section of a conventional hat-type joiner is designed for 16mm thick siding boards, if it is used as is on an 18mm thick siding board, a gap will form between the hollow hole in the siding board and the top of the hat section. Air that flows into this gap will push the caulking material filled in the upper part of the hat section outward, causing the caulking material to fall off or float. Therefore, to prevent this, it becomes necessary to increase the height of the hat part of the hat-type joiner and manufacture a separate one that is sized to accommodate 18mm thick siding boards.

[0008] The present invention was made based on these points, and its purpose is to provide a metal fitting for building exterior walls that is easy to work with and has excellent versatility, improving the air permeability and water permeability at the joints between siding boards and at the joints between siding boards and window frames or eaves, preventing air from flowing into the caulking material and preventing the caulking material from falling off or floating away, and that is easy to manufacture, keeps manufacturing and product costs low, and can be used with a single type of metal fitting to fit multiple siding boards of different thicknesses. [Means for solving the problem]

[0009] In order to achieve the above-mentioned object, the connecting hardware for building exterior walls according to claim 1 of the present invention is a connecting hardware for building exterior walls that can be used as a positioning member for siding boards when using siding boards as exterior wall materials in exterior wall construction including exterior corners, interior corners, wall surfaces, window frames and eaves of a building, and is characterized by comprising: a first vane that is placed between the two members to be joined and sets the joint width between them; a second vane that is connected to the base end edge of the first vane and extends diagonally toward the architectural structural body or auxiliary body attached to the architectural structural body located inward, with its tip edge located at a projected position that approximately coincides with the tip edge of the first vane; and a third vane that is connected to the tip edge of the second vane and extends along the installation surface of the architectural structural body or auxiliary body located inward, with its tip edge extending further toward the tip side than the projected position of the base end edge of the first vane, and is attached to the architectural structural body or auxiliary body at its protruding portion.

[0010] In addition, the connecting fittings for building exterior walls according to claim 2 are characterized in that, in the connecting fittings for building exterior walls described in claim 1, the normal height of the second vane from the installation surface is set to a dimension that corresponds to the use of multiple siding boards of different thicknesses.

[0011] Furthermore, the metal connector for a building exterior wall according to claim 3 is the metal connector for a building exterior wall according to claim 1, characterized in that a bond breaker is attached to the top surface of the first vane.

[0012] Furthermore, the connecting fittings for building exterior walls according to claim 4 are characterized in that, in the connecting fittings for building exterior walls described in claim 1, the connecting fittings for building exterior walls are composed of long members extending in the left-right or up-down direction, which are formed by bending a single sheet of plate material into a Z-shape.

[0013] Furthermore, the connecting fittings for building exterior walls according to claim 5 are characterized in that, in the connecting fittings for building exterior walls described in claim 1, when the connecting fittings for building exterior walls are used to join two siding boards for flat surfaces arranged in a plane, the opposite end face of one of the siding boards for flat surfaces is abutted against the tip edge of the first vane, and the opposite end face of the siding board for the other flat surface is abutted against the base edge of the first vane.

[0014] In addition, the construction fittings for building exterior walls according to claim 6 are characterized in that, in the building exterior wall connecting fittings described in claim 1, when the building exterior wall connecting fittings are used to connect two flat siding boards arranged in a cross-shaped manner at the corner of a building, the facing inner wall surface of one of the flat siding boards is abutted against the tip edge of the first vane, and the facing end surface of the other flat siding board is abutted against the base end edge of the first vane.

[0015] Furthermore, the connecting fittings for building exterior walls according to claim 7 are characterized in that, in the connecting fittings for building exterior walls according to claim 1, when the connecting fittings for building exterior walls are used to join a siding board for a flat portion and a siding board for a corner portion, the opposite end face of the siding board for the corner portion is butted against the tip edge of the first vane, and the opposite end face of the siding board for the flat portion is abutted against the base edge of the first vane.

[0016] In addition, the connecting fittings for building exterior walls according to claim 8 are characterized in that, in the connecting fittings for building exterior walls according to claim 1, when the connecting fittings for building exterior walls are used to join a siding board for flat surfaces to a window frame, the opposite outer surface of the window frame is abutted against the tip edge of the first vane, and the opposite end surface of the siding board for flat surfaces is abutted against the base end edge of the first vane.

[0017] In addition, the connecting fittings for building exterior walls according to claim 9 are characterized in that, in the connecting fittings for building exterior walls described in claim 1, when the connecting fittings for building exterior walls are used to join a siding board for a flat surface and an eaves soffit, the opposite underside of the eaves soffit is abutted against the tip edge of the first vane, and the opposite end face of the siding board for a flat surface is abutted against the base end edge of the first vane.

[0018] Furthermore, the connecting fittings for building exterior walls according to claim 10 are characterized in that, in the connecting fittings for building exterior walls described in claim 1, the ends of the connecting fittings for building exterior walls are provided with notches that allow the grooves formed between the second and third vanes of each building exterior wall to communicate when the connecting fittings for two building exterior walls are used in a crossed state. [Effects of the Invention]

[0019] The above means provides the following effects: The metal fitting for building exterior walls of the present invention is made up of only three components: a first wing plate provided between the two members to be joined, a third wing body attached to the building structural frame or auxiliary frame, and a second wing body connecting the two at an angle, making it possible to provide a metal fitting for building exterior walls that is easy to manufacture and inexpensive.

[0020] Furthermore, when this metal fitting for the exterior wall of a building is installed between the two components it joins, a triangular space is created between the second wing and the two components, allowing air and moisture that flows through the hollow holes in the siding board to pass through this triangular space and be released to the outside through the gap formed between the siding board and the building's structural frame or auxiliary frame. This prevents the siding board from warping due to temperature differences, which was caused by the poor breathability and water permeability of conventional hat-type joiners.

[0021] Furthermore, if the normal height of the second vane from the installation surface is set to a dimension that corresponds to the use of multiple siding boards of different thicknesses, it will be possible to use it not only for the new installation of the currently widely used 18mm thick siding boards, but also for repair work on existing building exterior walls that have been fitted with the previously commonly used 16mm thick siding boards. In addition, the inflow of air into the caulking material, which was a problem when conventional hat-type joiners were used on 18mm thick siding boards, is prevented, which also prevents the caulking material from falling off or floating away due to the caulking material being pushed outward by the inflow of air.

[0022] Furthermore, when a bond breaker is applied to the top surface of the first vane, the caulking material is prevented from adhering to the metal fittings on the building's exterior wall, resulting in a two-sided bond where the caulking material adheres only to the two components being joined. This prevents damage such as peeling and cracking of the caulking material when the building moves due to an earthquake, which is a problem with three-sided bonding.

[0023] Furthermore, if the connecting fittings for the exterior walls of a building are formed from long members extending in the left-right or up-down direction by bending a single sheet of board material into a Z-shape, it will be possible to provide connecting fittings for the exterior walls of a building that are even easier to manufacture and less expensive.

[0024] Furthermore, when using a connecting fitting for the exterior wall of a building to join two siding boards for flat surfaces arranged in a plane, the two components to be joined can be accurately positioned and attached by simply butting the opposing end face of one of the siding boards for flat surfaces against the tip edge of the first wing of the connecting fitting for the exterior wall of the building installed in a predetermined position, and then abutting the opposing end face of the other siding board for flat surfaces against the base edge of the first wing.

[0025] Furthermore, when the connecting fittings for the exterior walls of a building are used to join two flat siding boards that are arranged in a cross-shaped position at the corner of the building, the two components to be joined can be accurately positioned and attached simply by butting the opposing inner wall surface of one of the flat siding boards against the tip edge of the first wing of the connecting fittings for the exterior walls of the building installed in the specified position, and then abutting the opposing end surface of the other flat siding board against the base edge of the first wing.

[0026] Furthermore, when using a connecting fitting for the exterior wall of a building to join a siding board for a flat section and a siding board for a corner section, the two components to be joined can be accurately positioned and attached simply by butting the opposing end face of the siding board for the corner section against the tip edge of the first wing of the connecting fitting for the exterior wall of the building installed in a predetermined position, and then abutting the opposing end face of the siding board for the flat section against the base edge of the first wing.

[0027] Furthermore, when using a connecting fitting for the exterior wall of a building to join a siding board for a flat surface to a window frame, the two components to be joined can be accurately positioned and attached simply by butting the opposing outer surface of the window frame against the tip edge of the first wing of the connecting fitting for the exterior wall of the building installed in a predetermined position, and abutting the opposing end surface of the siding board for a flat surface against the base edge of the first wing.

[0028] Furthermore, when using a connecting fitting for the exterior wall of a building to join a siding board for a flat surface to an eaves soffit, the two components to be joined can be accurately positioned and attached simply by butting the opposing underside of the eaves soffit against the tip edge of the first wing of the connecting fitting for the exterior wall of the building installed in the specified position, and abutting the opposing end face of the siding board for a flat surface against the base edge of the first wing.

[0029] Furthermore, if a notch is provided at the end of the connecting fittings of two building exterior walls so that the grooves formed between the second and third vanes of each wall communicate when the connecting fittings of two building exterior walls are used in a crossed position, water, etc. flowing down the groove of the connecting fitting of one of the building exterior walls will not be obstructed by the connecting fitting of the other building exterior wall and will not accumulate in the groove, but will be guided to the groove of the connecting fitting of the other building exterior wall that extends downward and communicates with the groove, and will be able to be drained downward. [Brief explanation of the drawings]

[0030] [Figure 1] FIG. 1 is a diagram showing a first embodiment of the present invention, and is a perspective view showing a part of a building on which an exterior wall is installed. [Figure 2] FIG. 1 is a diagram showing a first embodiment of the present invention, and is a cross-sectional plan view showing the installation state of a joint fitting for the exterior wall of a building of the present invention. [Figure 3] FIG. 1 shows a first embodiment of the present invention, and is an end view showing two types of metal connectors for building exterior walls according to the present invention. [Figure 4] FIG. 1 is a diagram showing the first embodiment of the present invention, and is a cross-sectional plan view showing the state in which the connecting hardware for the exterior wall of a building of the present invention is used to join two siding boards for flat surfaces arranged in a plane. [Figure 5] FIG. 1 is a diagram showing the first embodiment of the present invention, and is a cross-sectional plan view showing the state in which the connecting hardware for the exterior wall of a building of the present invention is used to connect two siding boards for flat surfaces that are arranged in a cross-shaped manner at the corner of a building. [Figure 6]FIG. 1 is a diagram showing the first embodiment of the present invention, and is a cross-sectional plan view showing the state in which the connecting hardware for the exterior wall of a building of the present invention is used to connect a siding board for a flat portion and a siding board for a corner portion. [Figure 7] FIG. 1 is a diagram showing the first embodiment of the present invention, and is a cross-sectional plan view showing the state in which the connecting hardware for the exterior wall of a building of the present invention is used to connect the left and right frames of a window frame to a siding board for a flat surface. [Figure 8] FIG. 1 is a diagram showing the first embodiment of the present invention, and is a side cross-sectional view showing the state in which the connecting hardware for the exterior wall of a building of the present invention is used to connect the upper and lower frames of a window frame to a siding board for a flat surface. [Figure 9] FIG. 1 is a diagram showing the first embodiment of the present invention, and is a side cross-sectional view showing the state in which the metal joint for the exterior wall of a building of the present invention is used to join a siding board for a flat portion and an eave soffit. [Figure 10] FIG. 10 is a diagram showing a second embodiment of the present invention, and is a perspective view showing an example of a case in which a notch is provided at the end of a metal joint for a building exterior wall of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0031] Below, using two examples, namely the first embodiment shown in Figures 1 to 9 and the second embodiment shown in Figure 10, we will explain the configuration of the connecting fittings for building exterior walls of the present invention, how to use the connecting fittings, and the construction procedure for installing building exterior walls using the connecting fittings. In the following explanation, the configuration of the building exterior wall fastener of the present invention will first be specifically explained using the first embodiment shown in Figures 1 to 9 as an example. Next, the use of the building exterior wall fastener of the present invention will be explained by dividing it into each part to be joined. Next, the construction procedure when installing a building exterior wall using the building exterior wall fastener of the present invention will be explained. Next, a second embodiment of the building exterior wall fastener, which differs in partial configuration from the above embodiment, will be explained, and finally, other embodiments will be mentioned.

[0032] [First embodiment] (1) Structure of the joint fittings for the building exterior wall (see Figures 1 to 3) The connecting fitting 1 for the exterior wall of a building of the present invention is a connecting fitting that is installed in a joint 3 and can be used as a positioning member for a siding board 2 when the siding board 2 is used as an exterior wall material in exterior wall construction including an outside corner 15, an inside corner 16, a wall surface 17, a window frame 18, and an eaves soffit 19 of a building 12. Specifically, it is used in joints 3 such as the corner portion of an outside corner 15 shown in A in Figure 1, the corner portion of an inside corner 16 shown in B in Figure 1, the flat portion that becomes the wall surface shown in C in Figure 1, the boundary portion between the left and right wall surfaces 17 of a window frame 18 shown in D in Figure 1, the boundary portion between the top and bottom wall surfaces 17 of a window frame 18 shown in E in Figure 1, or the boundary portion between an eaves soffit 19 or sloped roof 30 and the wall surface 17 below it shown in F in Figure 1.

[0033] The connecting metal fitting 1 for the building exterior wall of the present invention comprises a first vane 14 that is provided between two members to be joined and sets the joint width W between them; a second vane 24 that is connected to the base edge 14b of the first vane 14 and extends obliquely toward the base materials 20, 40 of the building structural frame 7 located inside or the auxiliary base material 21 that is the auxiliary frame 8 attached to the building structural frame 7, and whose tip edge 24a is located at a projection position O so that it nearly coincides with the tip edge 14a of the first vane 14; The third vane 34 is basically configured by a third vane 34 connected to the tip edge 24a of the first vane 14 and extending along the installation surface 9 of the auxiliary base material 21, which is the base material 20, 40 or auxiliary body 8 of the architectural structure body 7 located inward, and whose tip edge 34a protrudes further toward the tip side than the projection position P of the base end edge 14b of the first vane 14, and whose protruding portion 34c is attached to the auxiliary base material 21, which is the base material 20, 40 or auxiliary body 8 of the architectural structure body 7.

[0034] Furthermore, the height H of the second vane 24 in the normal direction from the installation surface 9 is set to a dimension that corresponds to the use of a plurality of siding boards 2 having different board thicknesses t. Incidentally, in this embodiment, two types of building exterior wall fastening fittings 1 are used so that they can be used for both a siding board 2 with a hollow hole 4 having a plate thickness t of 18 mm and a siding board 2 with a hollow hole 4 having a plate thickness t of 16 mm: a building exterior wall fastening fitting 1A shown in Figure 3(a) in which the height H in the normal direction of the second vane 24 is, for example, 22 mm; and a building exterior wall fastening fitting 1B shown in Figure 3(b) in which the height H in the normal direction of the second vane 24 is, for example, 8 mm.

[0035] Here, the connecting fitting 1A of the building exterior wall shown in Figure 3(a) is a connecting fitting used when attaching the third vane 34 to the base materials 20, 40 of the architectural structural body 7, and has dimensions when the gap S of the space portion 27 formed between the architectural structural body 7 and the siding board 2 is 15 mm. On the other hand, the connecting fitting 1B for the building exterior wall shown in Figure 3(b) is a connecting fitting for use when an auxiliary base material 21, which is a 15 mm thick auxiliary body 8, is provided on the base materials 20, 40 of the building structural body 7, and a third vane 34 is attached to this auxiliary base material 21, and its dimensions take into account the thickness of the auxiliary base material 21.

[0036] In addition, the length L1 of the first vane 14 of the connecting fittings 1A and 1B of the building exterior wall shown in Figures 3(a) and (b) is 10 mm, the same as the joint width W of the joint 3, and the length L2 of the third vane 34 is set, as an example, to 30 mm extending 20 mm from the tip edge 14a of the first vane 14 toward the tip. After the siding board 2 is installed, the joints 3 are filled with caulking material 29 as shown in Figure 2. At this time, in this embodiment, a tape-shaped bond breaker 5 is provided as an example to prevent the caulking material 29 from adhering to the top surface 14c of the first vane 14 of the connecting fitting 1 of the building exterior wall.

[0037] In this embodiment, the building exterior wall connector 1 is made of a long member extending in the left-right direction X or the up-down direction Z, formed by bending a single sheet of plate material, for example, a 0.3 mm thick Galvanized Steel (registered trademark), into a Z-shape. This member is easy to form, inexpensive, and can be cut to an appropriate length to suit the site.

[0038] (2) Use of metal fittings for building exterior walls (see Figures 1 and 4 to 9) Next, the manner in which the metal fitting 1 for building exterior walls of the present invention is used will be explained, dividing it into parts of the building 12 where the metal fitting 1 for building exterior walls of the present invention is installed. (A) When used to join flat siding boards arranged in a flat plane (see Figures 1 and 4) For example, in the wall surface 17 indicated by C in FIG. 1, it is used to join two siding boards 2F, 2F for flat portions arranged in a plane as shown in FIG. In this case, the building exterior wall connecting fitting 1A shown in Figure 3(a) is installed in a predetermined position, and one flat portion siding board 2F is attached with the opposing end face butting against the tip edge 14a of the first vane 14, and the other flat portion siding board 2F is attached with the opposing end face abutting against the base edge 14b of the first vane 14. The third vane 34 is then attached to a pillar or other material serving as a flat portion base material 40 using screws 11 or the like.

[0039] (B) When used to join flat siding boards arranged in a cross pattern at the corners of a building (see Figures 1 and 5). For example, at an inside corner 16 indicated by B in FIG. 1, two siding boards 2F, 2F for flat surfaces are joined in a crossed state as shown in FIG. In this case, the building exterior wall connecting fitting 1A shown in Figure 3(a) is installed in a predetermined position, and the facing inner wall surface 2a of one flat siding board 2F is attached with the leading edge 14a of its first vane 14 butting against the facing inner wall surface 2a, and the facing end face of the other flat siding board 2F is attached with the base edge 14b of the first vane 14. The third vane 34 is then attached to a beam 22 or the like near a pillar or the like, which serves as the corner base material 20, using screws 11 or the like.

[0040] (C) When used to join a siding board for a flat section and a siding board for a corner section (see Figures 1 and 6) For example, this is the case when joining a siding board 2F for a flat portion and a siding board 2C for a corner portion as shown in FIG. 6 at an external corner 15 indicated by A in FIG. In this case, the building exterior wall connecting fitting 1A shown in Figure 3(a) is installed in a predetermined position, and the corner siding board 2C is attached with the opposing end face butting against the tip edge 14a of the first vane 14, and the flat siding board 2F is attached with the opposing end face abutting against the base edge 14b of the first vane 14. The third vane 34 is then attached to the corner base material 20, such as a pillar material, using screws 11 or the like.

[0041] (D) When joining flat siding boards to the left and right sides of a window frame (see Figures 1 and 7) For example, in the side regions of the left and right frames 18L, 18R of the window frame 18 shown as D in Figure 1, the left and right frames 18L, 18R are joined to siding boards 2F for the left and right flat portions as shown in Figure 7. In this case, the building exterior wall connecting fitting 1A shown in Figure 3(a) is installed in a predetermined position, and the facing outer surfaces of the left and right frames 18L, 18R of the window frame 18 are butted against the leading edge 14a of the first vane 14, and the facing end faces of the flat siding board 2F are attached to the base edge 14b of the first vane 14. The third vane 34 is then attached using screws 11 or the like to a stud or other intermediate window frame base material 50 for attaching the window frame 18.

[0042] (E) When joining flat siding boards to the top and bottom of a window frame (see Figures 1 and 8) For example, in the area above or below the upper and lower frames 18U, 18D of the window frame 18 shown as E in Figure 1, the upper and lower frames 18U, 18D are joined to siding boards 2F for the flat surfaces above and below them, as shown in Figure 8. In this case, the building exterior wall connecting fitting 1A shown in Figure 3(a) is installed in a predetermined position, and the opposing outer surfaces of the upper and lower frames 18U, 18D of the window frame 18 are butted against the leading edge 14a of the first vane 14, and the opposing end faces of the flat siding board 2F are attached to the base edge 14b of the first vane 14. The third vane 34 is then attached using screws 11 or the like to a horizontally extending batten or the like that serves as the window frame base material 50 for attaching the window frame 18.

[0043] (F) When joining a siding board for a flat surface below the eaves (see Figures 1 and 9) For example, in the area below the eaves soffit 19 indicated by F in FIG. 1, the eaves soffit 19 and a siding board 2F for a flat portion are joined as shown in FIG. In this case, the building exterior wall connecting fitting 1B shown in Figure 3(b) is installed in a predetermined position, and the facing underside 19a of the eaves soffit 19 is attached with the leading edge 14a of the first vane 14 butting against it, and the facing end face of the flat portion siding board 2F is attached with the base edge 14b of the first vane 14. Then, the third vane 34 is attached using screws 11 or the like to the auxiliary base material 21 or the like attached to the flat portion base material 40 in order to attach the eaves soffit 19.

[0044] (3) Construction procedure for installing building exterior walls (see Figures 2 and 4 to 10) When installing the building exterior wall 13, the moisture-permeable waterproof sheet 25 is first attached to the wall surface 17 of the assembled building structural body 7. The moisture-permeable waterproof sheet 25 is a sheet-like member that does not allow liquids such as rainwater to pass through but allows gases such as water vapor (moisture) and dry air to pass through. Specifically, a polyethylene nonwoven fabric sheet having a thickness of about 0.1 to 0.5 mm, as specified in the Japanese Industrial Standard JISA6111, can be used as the moisture-permeable waterproof sheet 25.

[0045] Next, the required number of metal joints 1 for building exterior walls of the present invention are installed in predetermined positions in the orientations shown in Figs. 4 to 9 on the building structural body 7 on which the moisture-permeable waterproof sheet 25 has been attached. In this case, the auxiliary structure 8 is attached to the necessary locations on the outer surface of the architectural structural body 7 to which the breathable waterproof sheet 25 has been attached, and the third wing 34 of the connecting fitting 1 of the building exterior wall is fixed to the base materials 20, 40 that make up the architectural structural body 7 and the auxiliary base material 21 that makes up the auxiliary structure 8 using screws 11 or the like.

[0046] Next, the position of the attached metal fittings 1 on the exterior wall of the building is measured in the left-right direction X and the up-down direction Z using a tape measure or the like, and based on the measured values, a parts diagram is created showing the layout and cutting position that will result in the best yield relative to the raw material of the siding board 2. Next, the siding board 2 is pre-cut using an NC cutter, hand cutter, etc. in a factory based on the created parts drawing. Then, fixing brackets 53 for attaching the siding board 2 to the building structural body 7 and auxiliary body 8 on which the moisture-permeable waterproof sheet 25 has been attached are attached using screws 11, etc.

[0047] Next, a bond breaker 5 is applied to the top surface 14c of the first vane 14 of the building exterior wall connector 1, and a water-stopping material (not shown) is installed as needed, enveloping the building exterior wall connector 1. As the water-stopping material, a synthetic rubber or synthetic resin elastic foam that exhibits strong water-stopping properties when compressed and has moderate water absorption properties can be used. Next, the cut siding boards 2 are arranged on the wall surface 17 of the building 12 based on the created layout drawing, and are attached to the wall surface 17 using the fixing brackets 53 described above. Finally, the joints 3 of the installed siding boards 2 are filled with caulking material 29, completing the installation of the building exterior wall 13.

[0048] Furthermore, with the building exterior wall connecting fitting 1 of this embodiment configured in this manner, good breathability and water permeability can be achieved at the joints between the siding boards 2, 2 and at the joints between the siding board 2 and the window frame 18 or eaves 19, thereby preventing the occurrence of warping of the siding board 2, which previously occurred due to poor breathability and water permeability. Furthermore, since air can be prevented from flowing into the caulking material 29, the caulking material 29 can be prevented from falling off or floating up due to the upward movement of the caulking material 29 caused by the air flowing in. Furthermore, the building exterior wall connecting fitting 1 according to this embodiment has a simple structure, making it easy to manufacture, and is economical as it keeps manufacturing and product costs low.It can also be used for multiple siding boards 2 of different thicknesses, making it easy to work with and versatile.

[0049] [Second embodiment] Next, we will explain a second embodiment of the building exterior wall connector 1 of the present invention. The building exterior wall connector 1' according to the second embodiment is a building exterior wall connector 1 suitable for use in construction locations where connectors 1, 1 of two building exterior walls are arranged in a crossed state, such as around a window frame 18. Specifically, the connecting fitting 1' of this building exterior wall has a notch 51 formed at its end, and this notch 51 is configured to connect the V-shaped grooves 52, 52 formed between the second blade 24 and the third blade 34 of the connecting fittings 1', 1 of the two intersecting building exterior walls.

[0050] As a result, for example, water 55 (condensation water, rainwater) flowing down the groove 52 in the building exterior wall connecting fitting 1' arranged horizontally at the top of the window frame 18 will not be obstructed by the building exterior wall connecting fittings 1, 1 arranged vertically on the left and right sides of the window frame 18, but will be guided through the notch 51 formed at the end of the building exterior wall connecting fitting 1' to the grooves 52, 52 in the building exterior wall connecting fittings 1, 1 arranged vertically, and will flow downward to be drained. Furthermore, according to the building exterior wall connector fitting 1' of this embodiment configured in this manner, in addition to the effects of the building exterior wall connector fitting 1 of the first embodiment described above, the problem of drainage being stagnant at the connection between the connector fittings 1', 1 of two intersecting building exterior walls is also solved.

[0051] [Other embodiments] The metal connector 1 for building exterior walls of the present invention is not limited to the above-described embodiment, and can be modified within the scope of the description. For example, the dimensions of each part of the connecting fittings 1 for the exterior wall of a building are not limited to the dimensions described in the above-mentioned embodiment, but can be changed appropriately depending on the thickness t of the siding board 2 used, the size of the gap S in the space 27 between the building structure body 7 and the siding board 2, the joint width W, etc. Furthermore, by adjusting the inclination angle of the second blade 24, the height H of the second blade 24 in the normal direction from the installation surface 9 can be appropriately changed to suit the dimensions of the site. [Industrial Applicability]

[0052] The metal fittings for building exterior walls of the present invention can be used in the construction field where exterior wall construction of buildings is carried out, and in the manufacturing and use of metal fittings for building exterior walls used in such exterior wall construction, and are particularly applicable when it is desired to use metal fittings for building exterior walls that improve the air permeability and water permeability at the joints of siding boards, and that are easy to manufacture and install and inexpensive. [Explanation of symbols]

[0053] 1. Building exterior wall joints 1´ Building exterior wall joints 2. Siding boards 2C Corner siding board 2F Siding board for flat area 2a Inner wall surface 3 Joint 4 Hollow Hole 5 Bond Breaker 7 Architectural structure frame 8 Auxiliary frame 9 Installation surface 11 Bis 12 Buildings 13 Building exterior walls 14 1st wing plate 14a Tip edge 14b Base edge 14c Top 15 Corner 16 Inside corner (corner part) 17 Wall 18 Window Frame 19 Eaves 19a Bottom side 20 Corner base material 21 Auxiliary base material 22 Beam material 24 Second wing plate 24a Tip edge 24b Base edge 25 Breathable waterproof sheet 27 Space section 29 Caulking material 30 Sloped Roof 34 Third wing plate 34a Tip edge 34c protruding part 40 Base material for flat areas 50 Window frame base material 51 Notch 52 Groove 53 Fixing bracket 55 water X Left / right direction Z vertical direction W joint width H (normal to the second blade) L1 (first blade) length L2 (third wing) length O Projection position P projection position t Plate thickness S Gap

Claims

1. In exterior wall construction work including building corners, inside corners, walls, window frames and eaves, when using siding boards as exterior wall materials, this is a joint metal fitting for the exterior wall of a building that can be used as a positioning member for the siding board, A first blade is provided between the two members to be joined and sets the joint width between them; a second vane connected to the base end edge of the first vane and extending obliquely toward the building structure skeleton located inward or the auxiliary skeleton attached to the building structure skeleton, with its tip edge substantially coinciding with the tip edge of the first vane, and located at the projected position; a third vane connected to the tip edge of the second vane, extending along the installation surface of the architectural structural body or auxiliary body located inward, with its tip edge projecting further toward the tip side than the projected position of the base end edge of the first vane, and attached to the architectural structural body or auxiliary body at its projecting portion.

2. The connecting hardware for building exterior walls as described in claim 1, characterized in that the height of the second vane in the normal direction from the installation surface is set to a dimension that corresponds to the use of multiple siding boards of different thicknesses.

3. 2. The metal joint for a building exterior wall according to claim 1, wherein a bond breaker is attached to the top surface of the first vane.

4. The connecting fitting for the building exterior wall as described in claim 1, characterized in that the connecting fitting for the building exterior wall is composed of a long member extending in the left-right or up-down direction, formed by bending a single plate material into a Z-shape.

5. The connecting hardware for the building exterior wall described in claim 1, characterized in that when the connecting hardware for the building exterior wall is used to connect two siding boards for flat surfaces arranged in a plane, the connecting hardware is used with the opposing end face of one of the siding boards for flat surfaces abutted against the tip edge of the first vane and the opposing end face of the other siding board for flat surfaces abutted against the base edge of the first vane.

6. The connecting hardware for the building exterior wall described in claim 1, characterized in that when the connecting hardware for the building exterior wall is used to connect two siding boards for flat surfaces arranged in a cross-shaped manner at the corner of a building, the connecting hardware is used with the tip edge of the first vane abutting the opposing inner wall surface of one of the siding boards for flat surfaces and the base edge of the first vane abutting the opposing end surface of the other siding board for flat surfaces.

7. The connecting hardware for the building exterior wall described in claim 1, characterized in that when the connecting hardware for the building exterior wall is used to connect a siding board for a flat portion and a siding board for a corner portion, the connecting hardware is used with the opposing end face of the siding board for the corner portion butted against the tip edge of the first vane and the opposing end face of the siding board for the flat portion abutted against the base end edge of the first vane.

8. The connecting hardware for the building exterior wall described in claim 1, characterized in that when the connecting hardware for the building exterior wall is used to connect a siding board for a flat portion to a window frame, the connecting hardware is used with the opposing outer surface of the window frame abutted against the tip edge of the first vane and the opposing end surface of the siding board for a flat portion abutted against the base end edge of the first vane.

9. The connecting hardware for the building exterior wall described in claim 1, characterized in that when the connecting hardware for the building exterior wall is used to connect a siding board for a flat portion to a siding soffit, the opposite underside of the soffit is abutted against the tip edge of the first vane, and the opposite end face of the siding board for a flat portion is abutted against the base end edge of the first vane.

10. A connecting fitting for a building exterior wall as described in claim 1, characterized in that the end of the connecting fitting for the building exterior wall has a notch that allows the grooves formed between the second and third vanes of each of the two building exterior wall connecting fittings to communicate when the connecting fittings for the two building exterior walls are used in a crossed state.

Images