Doors and fittings and methods for installing them

Abstract

To provide building components that can be easily assembled and installed at the construction site from their component state. [Solution] A sliding door having a frame on the inner circumference of a frame is housed in this joinery, and at least one of the frame and the frame is made of resin, the frame and the frame each having a horizontal member and a vertical member, and a first metal plate having a first plate portion for connecting the horizontal member and a second plate portion for connecting the vertical member is placed between the end face of the horizontal member and the end face of the vertical member of at least one of the resin horizontal members of the frame and the frame, and a second metal plate is housed inside at a position closer to the center in the extension direction than the end face of the horizontal member and the end face of the vertical member, and a first screw is screwed from the first plate portion of the first metal plate to the second metal plate housed in the horizontal member, and a second screw is screwed from the second plate portion of the first metal plate to the second metal plate housed in the vertical member, thereby connecting the horizontal member and the vertical member.

Description

Technical Field

[0001] The present disclosure relates to fittings and a method for installing fittings.

Background Art

[0002] Conventionally, there has been known a fitting in which a shoji with a frame made of resin assembled in four directions is stored on the inner peripheral side of a frame made of resin assembled in four directions. The frame of the shoji is welded in a state where the cut surfaces obtained by cutting the end faces of the upper frame, lower frame, door tip frame, and joining frame at an angle of 45° are abutted against each other (see, for example, Patent Document 1).

Prior Art Documents

Patent Documents

[0003] [[ID=第二十一]] [[ID=第二十二]]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] When joining resin parts of fittings such as frames by welding, assembly work in a factory is essential. In the case of products assembled in a factory like this, at the construction site, the finished products after being assembled in the factory are transported. However, since the finished products have a large product volume, there is a problem that the loading efficiency during transportation decreases and the transportation cost increases. Therefore, it is required that the fittings can be easily assembled and constructed from the component state at the construction site.

[0005] An object of the present disclosure is to provide a fitting and a method for installing the fitting that can be easily assembled and constructed from the component state at the construction site.

Means for Solving the Problems

[0006] This disclosure relates to a door fitting in which a sliding door having a frame body on the inner circumference of a frame is housed, and at least one of the frame body and the frame body is made of resin, wherein the frame body has an upper frame and a lower frame as horizontal members, and a pair of left and right vertical frames as vertical members, and the frame body has an upper frame and a lower frame as horizontal members, and a pair of left and right vertical frames as vertical members, and between the end face of the horizontal member of at least one of the resin-made horizontal members of the frame body and the frame body and the end face of the vertical member, there is a first plate portion connecting the horizontal member and a second plate portion connecting the vertical member. The present invention relates to a joinery device in which a first metal plate having a plate portion is arranged, and a second metal plate is housed inside the end face of the horizontal member and the end face of the vertical member at a position closer to the center in the extension direction, and a first screw is screwed from the first plate portion of the first metal plate to the second metal plate housed in the horizontal member, and a second screw is screwed from the second plate portion of the first metal plate to the second metal plate housed in the vertical member, thereby connecting the horizontal member and the vertical member.

[0007] This disclosure relates to a method for constructing a door or window, wherein a sliding door having a frame on the inner circumference of a frame is housed within the frame, and at least one of the frame and the frame is made of resin, wherein the frame has an upper frame and a lower frame as horizontal members, and a pair of left and right vertical frames as vertical members, and the frame has an upper frame and a lower frame as horizontal members, and a pair of left and right vertical frames as vertical members, and between the end face of the horizontal member of at least one of the resin-made horizontal members of the frame and the frame and the end face of the vertical member, there is a first plate portion connecting the horizontal member and a connecting plate portion connecting the vertical member. The present invention relates to a method for constructing a joinery, comprising: arranging a first metal plate having a second plate portion and housing the second metal plate inside a position closer to the center in the extension direction than the end face of the horizontal member and the end face of the vertical member; screwing a first screw from the first plate portion of the first metal plate to the second metal plate housed in the horizontal member, and screwing a second screw from the second plate portion of the first metal plate to the second metal plate housed in the vertical member, thereby connecting the horizontal member and the vertical member. [Brief explanation of the drawing]

[0008] [Figure 1] This is a view of the building fixture related to this disclosure, seen from the outside. [Figure 2] This is a view of the fixtures related to this disclosure, seen from the interior side. [Figure 3] This is a longitudinal cross-sectional view of the joinery related to this disclosure. [Figure 4] This is a cross-sectional view of the joinery related to this disclosure. [Figure 5] This is a perspective view showing the joinery related to this disclosure, disassembled into a frame and a sliding door. [Figure 6] This is an enlarged perspective view of section A of the frame, indicated by the arrow in Figure 5, as seen from above on the interior side. [Figure 7] This is an enlarged perspective view of part A of the frame, indicated by the arrow in Figure 5, as seen from below on the outside. [Figure 8] Figure 6 is a perspective view showing the disassembled connection between the horizontal and vertical members of the frame structure. [Figure 9] Figure 7 is a perspective view showing the disassembled connection between the horizontal and vertical members of the frame structure. [Figure 10A] This is a view of the corner member of the frame in the joinery relating to this disclosure, as seen from the side of the horizontal member. [Figure 10B] This is a view of the corner member of the frame in the joinery relating to this disclosure, as seen from the vertical member side. [Figure 10C] This is a view of the corner member of the frame in the building fixture relating to this disclosure, seen from the opposite side from the horizontal member. [Figure 11] These are longitudinal cross-sectional views taken at the position of line BB in Figures 10A to 10C, showing the connection between the horizontal and vertical members of the frame. [Figure 12] Figure 5 is an enlarged perspective view of section C of the frame, indicated by the arrow, as seen from below on the exterior side. [Figure 13] This is an enlarged perspective view of section C of the frame, indicated by the arrow in Figure 5, as seen from above on the interior side. [Figure 14] Figure 12 is a perspective view showing the disassembled connection between the horizontal and vertical members of the frame structure. [Figure 15] Figure 13 is a perspective view showing the disassembled connection between the horizontal and vertical members of the frame structure. [Figure 16A]This is a view of the corner member of the shoji frame in the fitting according to the present disclosure as seen from the side of the horizontal member. [Figure 16B] This is a view of the corner member of the shoji frame in the fitting according to the present disclosure as seen from the side of the vertical member. [Figure 16C] This is a view of the corner member of the shoji frame in the fitting according to the present disclosure as seen from the side opposite to the horizontal member. [Figure 17] This is a longitudinal sectional view obtained by cutting the connection portion between the horizontal member and the vertical member of the frame at the position of the D-D line in FIGS. 16A to 16C.

Embodiments for Carrying Out the Invention

[0009] Hereinafter, embodiments of the fitting of the present disclosure will be described in detail with reference to the drawings. As shown in FIGS. 1 to FIG. 4, the fitting 1 is attached to the inner peripheral surface of a rectangular opening 110 formed in the building structure 100. On the indoor side X2 of the fitting 1, a frame member 120 is provided over the entire periphery of the inner peripheral surface of the opening 110. As shown in FIGS. 3 and 4, the fitting 1 is fixed to the building structure 100 by screwing through a plurality of mounting brackets 1a attached to the outer peripheral surface of the fitting 1.

[0010] Here, the directions in each figure are defined as follows. In each figure, the direction indicated by the arrow X1-X2 indicates the indoor-outdoor direction of the fitting 1. X1 indicates the outdoor side of the fitting 1, and X2 indicates the indoor side of the fitting 1. The direction indicated by the arrow Y1-Y2 indicates the left-right direction of the fitting 1. Y1 indicates the right direction when the fitting 1 is viewed from the outdoor side X1, and Y2 indicates the left direction when the fitting 1 is viewed from the outdoor side X1. The direction indicated by the arrow Z1-Z2 indicates the up-down direction of the fitting 1. Z1 indicates the upward direction of the fitting 1, and Z2 indicates the downward direction of the fitting 1. <x

[0011] In this specification, the prospective direction refers to the direction along the indoor-outdoor direction X1-X2 in the fitting 1. The prospective plane is a plane arranged along the prospective direction. The finding direction refers to the direction orthogonal to the prospective direction and along the up-down direction and the left-right direction of the fitting 1. The finding plane is a plane arranged along the finding direction.

[0012] As shown in FIG. 5, the window fixture 1 has a frame body 2 and a shoji 3 housed on the inner peripheral side of the frame body 2. The window fixture 1 shown in this embodiment is an inward-opening window that opens the inner peripheral side of the frame body 2 by opening the shoji 3 toward the indoor side X2. However, for ease of understanding of the present disclosure, illustration of the mechanism related to the opening and closing operation of the shoji 3 and illustration of members such as airtight materials disposed between the frame body 2 and the shoji 3 are omitted.

[0013] First, the frame body 2 will be described.

[0014] The frame body 2 is configured by rectangularly assembling an upper frame 21, a lower frame 22, and a pair of left and right vertical frames 23 and 24. The upper frame 21 extends in the left-right direction at the upper part of the frame body 2. The lower frame 22 extends in the left-right direction at the lower part of the frame body 2. The vertical frames 23 and 24 extend in the up-down direction at the left and right vertical parts of the frame body 2, respectively. The frame body 2 has a vertical-win structure in which the upper frame 21 and the lower frame 22 are disposed between the upper and lower ends of the pair of left and right vertical frames 23 and 24.

[0015] The upper frame 21 and the lower frame 22 constitute the horizontal members in the frame body 2. The vertical frames 23 and 24 constitute the vertical members in the frame body 2. The upper frame 21, the lower frame 22, and the vertical frames 23 and 24 are all hollow and have the same cross-sectional shape. The upper frame 21, which is a horizontal member, and the lower frame 22 are arranged symmetrically up and down, and the vertical frame 23 and the vertical frame 24, which are vertical members, are arranged symmetrically left and right. The upper frame 21, the lower frame 22, and the vertical frames 23 and 24 are all extrusion-molded products made of resin material along their respective extending directions, and are entirely made of resin.

[0016] As shown in FIGS. 3 and 4, the upper frame 21, the lower frame 22, and the vertical frames 23 and 24 have a substantially rectangular cross-sectional shape composed of an outer peripheral wall portion 21a, 22a, 23a, 24a, an inner peripheral wall portion 21b, 22b, 23b, 24b, an outdoor wall portion 21c, 22c, 23c, 24c, and an indoor wall portion 21d, 22d, 23d, 24d. In the central portion in the prospective direction of the outer peripheral wall portions 21a, 22a, 23a, 24a, recesses 211, 221, 231, 241 extending over the entire length in the extending direction of the upper frame 21, the lower frame 22, and the vertical frames 23 and 24 are formed.

[0017] Inside the upper frame 21, lower frame 22, and vertical frames 23, 24, two pairs of partition walls 21e, 22e, 23e, and 24e are formed, spaced apart in the depth direction. The partition walls 21e, 22e, 23e, and 24e are provided across the outer periphery walls 21a, 22a, 23a, 24a and the inner periphery walls 21b, 22b, 23b, 24b, and extend along the extension direction of the upper frame 21, lower frame 22, and vertical frames 23, 24. As a result, three hollow sections S1, S2, and S3 are formed inside the upper frame 21, lower frame 22, and vertical frames 23, 24, respectively, aligned in the depth direction from the outdoor side X1 to the indoor side X2. The recesses 211, 221, 231, and 241 are located between the pairs of partition walls 21e, 22e, 23e, and 24e.

[0018] In the upper frame 21, lower frame 22, and vertical frames 23, 24, the outermost of the three hollow sections S1, S2, S3, the hollow section S1 of the outermost X1 protrudes toward the inner circumference. As a result, the outer ends of the inner circumferential wall sections 21b, 22b, 23b, 24b corresponding to the hollow section S1 are formed to rise toward the inner circumference, forming door stop sections 212, 222, 232, 242 that contact and receive the closed sash 3 from the outer X1.

[0019] Next, the structure of the connection between the horizontal members, the upper frame 21 and the lower frame 22, and the vertical members, the vertical members 23 and 24, in the frame 2 will be described. The frame 2 has four connection points, but below, the structure of the connection between the lower frame 22 and the vertical frame 23 in section A, indicated by the arrow in Figure 5, will be described with reference to Figures 6 to 11.

[0020] As mentioned above, the upper frame 21 and the lower frame 22 are arranged symmetrically vertically, and the vertical frame 23 and the vertical frame 24 are arranged symmetrically horizontally. Therefore, the structure and description of the connection between the horizontal member, the lower frame 22, and the vertical member, the vertical frame 23, in section A also apply to the other connection points between horizontal and vertical members, namely the connection points between the upper frame 21 and the vertical frames 23 and 24, and the connection point between the lower frame 22 and the vertical frame 24.

[0021] The end faces 220 of the lower frame 22 are perpendicular to the extension direction of the lower frame 22. Similarly, the end faces 230 of the vertical frame 23 are perpendicular to the extension direction of the vertical frame 23. This eliminates the need to machine the end faces 220 and 230 of the lower frame 22 and vertical frame 23 to precise angles, such as when they are cut at a 45° angle and then assembled together, thus simplifying the manufacturing process.

[0022] As shown in Figures 6 to 9, the ends of the vertical frame 23 on the interior side X2, relative to the recesses 231 of the interior wall portion 23d and the outer wall portion 23a, extend along the direction of extension of the vertical frame 23 relative to other parts. The extended portion constitutes the extension portion 233 of the vertical frame 23. As shown in Figures 6 and 7, the extension portion 233 extends to approximately the same position as the outer wall portion 22a of the lower frame 22.

[0023] As shown in Figures 7 to 9, the end of the door stop portion 232 of the vertical frame 23 is cut out in a rectangular shape. This creates a notched step portion 234 on the inner circumference side and the outdoor side X1 of the end face 230 of the vertical frame 23. When the lower frame 22 and the vertical frame 23 are connected, the end of the door stop portion 222 of the lower frame 22 is accommodated in the notched step portion 234.

[0024] The end face 220 of the lower frame 22 and the end face 230 of the vertical frame 23 are positioned at a 90° angle, and a single resin frame-side corner member 4, which connects the lower frame 22 and the vertical frame 23, is positioned between these end faces 220 and 230. The frame-side corner member 4 is a corner member that connects the horizontal member and the vertical member in the frame 2. The frame-side corner member 4 abuts against the end face 220 of the lower frame 22 with a gasket 25, which is a sealing material, in between, and abuts against the end face 230 of the vertical frame 23 with a gasket 26, which is a sealing material, in between.

[0025] The frame-side corner members 4, positioned at the four connection points of the frame 2, have the same structure. The frame-side corner members 4, 4 positioned at both the left and right ends of the lower frame 22 are symmetrical, and the frame-side corner members 4, 4 positioned at both the upper and lower ends of the vertical frames 23, 24 are symmetrical.

[0026] As shown in Figures 7 to 10C, the frame-side corner member 4 has a corner member body 41 that fills the space between the end face 220 of the lower frame 22 and the end face 230 of the vertical frame 23. The corner member body 41 has a first side surface 41a facing the end face 220 of the lower frame 22, a second side surface 41b facing the end face 230 of the vertical frame 23, a third side surface 41c facing the outdoor side X1, a fourth side surface 41d located on the opposite side of the second side surface 41b, and a fifth side surface 41e facing the indoor side X2. In the corner member body 41, the end surface 41f opposite to the first side surface 41a is open. The first side surface 41a has a shape that follows the shape of the end face 220 of the lower frame 22. The second side surface 41b has a shape that follows the shape of the end face 230 of the vertical frame 23. The first side 41a, the second side 41b, the third side 41c, the fourth side 41d, and the fifth side 41e are orthogonal to each other.

[0027] The first side surface 41a has three protrusions 411a, 411b, and 411c projecting toward the lower frame 22. The second side surface 41b has three protrusions 412a, 412b, and 412c projecting toward the vertical frame 23. The protrusions 411a, 411b, and 411c pass through the gasket 25 and are inserted into the three hollow sections S1, S2, and S3 of the lower frame 22, respectively. The protrusions 412a, 412b, and 412c pass through the gasket 26 and are inserted into the three hollow sections S1, S2, and S3 of the vertical frame 23, respectively. As a result, the frame-side corner member 4 is positioned in the correct location between the end face 220 of the lower frame 22 and the end face 230 of the vertical frame 23, and connects the lower frame 22 and the vertical frame 23 so that they intersect at a right angle. In other words, the lower frame 22 and the vertical frame 23 are positioned in the correct location by the frame-side corner member 4.

[0028] A roughly L-shaped projection piece 413 is formed at the end of the outdoor-facing X1 of the second side surface 41b of the corner member body 41, and at the boundary with the first side surface 41a, projecting toward the notched step portion 234 of the vertical frame 23. As shown in Figure 7, the tip of the projection piece 413 is sandwiched between the door stop portion 222 of the lower frame 22 and the notched step portion 234 of the vertical frame 23 when the lower frame 22 and the vertical frame 23 are connected.

[0029] As shown in Figures 1, 7, and 9, the third side surface 41c of the corner member body 41 facing the outdoor side X1 is exposed in a rectangular shape towards the outdoor side X1 between the lower frame 22 and the vertical frame 23, and is positioned flush with the outdoor wall portion 22c of the lower frame 22 and the outdoor wall portion 23c of the vertical frame 23. The fourth side surface 41d of the corner member body 41, opposite to the second side surface 41b, is positioned flush with the outer peripheral wall portion 22a of the lower frame 22. A recess 414a is formed on the fourth side surface 41d, which is continuous with the recess 221 of the lower frame 22, and a recess 414b is formed on the end surface 41f, which is continuous with the recess 231 of the vertical frame 23.

[0030] The fifth side surface 41e of the corner member body 41, which faces the indoor side X2, is covered by the indoor side X2 surface of the extension portion 233 of the vertical frame 23. Therefore, the frame-side corner member 4 is not visible from the indoor side X2. The end surface 41f of the corner member body 41 is open and is flush with the portion of the outer peripheral wall portion 23a of the vertical frame 23 that extends from the recess 231 to the outdoor side X1. The portion of the corner member body 41 that is on the indoor side X2 of the vertical frame 23 beyond the recess 231 is also covered by the outer peripheral surface of the extension portion 233 of the vertical frame 23. The second side surface 41b of the corner member body 41 protrudes laterally from the fifth side surface 41e and the end surface 41f, covering the end surface 233a of the extension portion 233 of the vertical frame 23. As a result, as shown in Figures 1, 2, 5, and 7, the connection between the lower frame 22 and the vertical frame 23, where the frame-side corner member 4 is located, forms a corner where the lower frame 22 and the vertical frame 23 intersect at right angles.

[0031] The corner member body 41 has a hollow structure. As shown in Figures 10C and 13, the interior of the corner member body 41 is divided into a grid by a plurality of partition walls 415a and 415b that extend vertically and horizontally. The partition walls 415a that extend vertically are provided across the opposing second side surface 41b and fourth side surface 41d of the corner member body 41 and are arranged parallel to each other with spacing in the depth direction. The plurality of partition walls 415b that extend horizontally are provided across the opposing third side surface 41c and fifth side surface 41e of the corner member body 41 and are arranged parallel to each other with spacing in the vertical direction. This increases the strength of the corner member body 41.

[0032] As shown in Figure 8, a U-shaped first frame-side metal plate insertion groove 416 is formed on the third side surface 41c of the corner member body 41. The first frame-side metal plate insertion groove 416 is a groove for inserting the first frame-side metal plate 51 into the interior of the corner member body 41 from the interior side X2. The first frame-side metal plate insertion groove 416 is formed to cut out from the fifth side surface 41e to the partition walls 415a and 415b inside the corner member body 41.

[0033] The first frame-side metal plate 51 is a first metal plate for connecting the horizontal member and the vertical member in the frame 2. As shown in Figures 8 and 9, the first frame-side metal plate 51 integrally comprises a first plate portion 511 arranged along the first side surface 41a of the corner member body 41, a second plate portion 512 arranged along the second side surface 41b of the corner member body 41, and a third plate portion 513 arranged along the fourth side surface 41d of the corner member body 41. The first plate portion 511 and the second plate portion 512 are bent perpendicularly to each other. The third plate portion 513 is bent in the same direction as the bending direction of the second plate portion 512 at the end of the first plate portion 511 opposite to the second plate portion 512. The third plate portion 513 is located at the end of the first plate portion 511 on the indoor side X2.

[0034] The first plate portion 511 and the second plate portion 512 each have three screw insertion holes 511a and 512a, respectively. The third plate portion 513 has one screw hole 513a with a female thread.

[0035] As shown in Figures 8 and 9, the first frame-side metal plate 51 is inserted from the indoor side X2 into the first frame-side metal plate insertion groove 416 of the corner member body 41 and housed inside the corner member body 41. As shown in Figure 11, inside the corner member body 41, the first plate portion 511 abuts along the first side surface 41a and is positioned parallel to the end face 220 of the lower frame 22. The second plate portion 512 abuts along the second side surface 41b and is positioned parallel to the end face 230 of the vertical frame 23. The third plate portion 513 abuts along the fourth side surface 41d. The first frame-side metal plate 51 housed inside the corner member body 41 is fixed to the corner member body 41 by screws 417 that pass through screw insertion holes 41d1 formed in the fourth side surface 41d and are screwed into screw holes 513a of the third plate portion 513.

[0036] As shown in Figures 6, 8, 9, and 11, second frame-side metal plates 52 are housed at both ends of the lower frame 22 and the vertical frame 23, respectively. The second frame-side metal plates 52 are second metal plates for connecting the horizontal members and vertical members in the frame 2. The second frame-side metal plates 52 are housed near the end face 220 of the lower frame 22 and the end face 230 of the vertical frame 23, respectively. Specifically, the second frame-side metal plate 52 of the lower frame 22 is located inside the lower frame 22, closer to the center in the extension direction of the lower frame 22 (left side in Figure 11) than the end face 220 of the lower frame 22. The second frame-side metal plate 52 of the vertical frame 23 is located inside the vertical frame 23, closer to the center in the extension direction of the vertical frame 23 (upper side in Figure 11) than the end face 230 of the vertical frame 23. In other words, the resin portion at the end of the lower frame 22 is interposed between the second frame-side metal plate 52 inside the lower frame 22 and the first side surface 41a of the frame-side corner member 4, and the resin portion at the end of the vertical frame 23 is interposed between the second frame-side metal plate 52 inside the vertical frame 23 and the second side surface 41b of the frame-side corner member 4. In the joinery 1, a group of connecting fittings 5 ​​that connects the horizontal member and the vertical member of the frame 2 is formed by one first frame-side metal plate 51 and two second frame-side metal plates 52, 52.

[0037] As shown in Figures 6, 8, and 11, the lower frame 22 and the vertical frame 23 are formed with second frame-side metal plate insertion grooves 223 and 235, respectively, for inserting the second frame-side metal plate 52. The second frame-side metal plate insertion groove 223 of the lower frame 22 extends linearly in the depth direction parallel to the end face 220 of the lower frame 22. The second frame-side metal plate insertion groove 223 is cut from the inner circumferential wall 22b of the lower frame 22 to the internal partition wall 22e, in a direction perpendicular to the extension direction of the partition wall 22e. The second frame-side metal plate insertion groove 235 of the vertical frame 23 extends linearly in the depth direction parallel to the end face 230 of the vertical frame 23. The second frame-side metal plate insertion groove 235 is cut from the inner peripheral wall portion 23b of the vertical frame 23 to the partition wall 23e inside the vertical frame 23, in a direction perpendicular to the extension direction of the partition wall 23e.

[0038] The second frame-side metal plate 52 is formed in a flat plate shape having a roughly L-shaped outer form with the outer end of the outdoor side X1 protruding outwards. The second frame-side metal plate 52 has three screw holes 52a formed in it, corresponding to the positions of the three screw insertion holes 511a and 512a formed in the first plate portion 511 and the second plate portion 512 of the first frame-side metal plate 51, respectively. Female threads are provided in the screw holes 52a.

[0039] As shown in Figures 8 and 9, the second frame-side metal plate 52 is inserted into the second frame-side metal plate insertion grooves 223 and 235 of the lower frame 22 and the vertical frame 23 from the inner circumference side of the frame 2, respectively, and is housed inside the lower frame 22 and the vertical frame 23. As shown in Figure 11, the second frame-side metal plate 52 housed in the lower frame 22 is positioned parallel to the first plate portion 511 of the first frame-side metal plate 51 inside the corner member body 41 inside the lower frame 22. The second frame-side metal plate 52 housed in the vertical frame 23 is positioned parallel to the second plate portion 512 of the first frame-side metal plate 51 inside the corner member body 41 inside the vertical frame 23.

[0040] The frame-side corner member 4, positioned at the corner between the lower frame 22 and the vertical frame 23, is fixed to the lower frame 22 and the vertical frame 23 by three first screws SC1 and three second screws SC2, as shown in Figures 8, 9, and 11.

[0041] The three first screws SC1 are inserted into the interior of the corner member body 41 from the end face 41f of the corner member body 41, which is positioned on the extending end face of the lower frame 22. One of these first screws SC1 passes through a screw insertion hole 233b formed in the extension portion 233 of the vertical frame 23 that covers the end face 41f of the corner member body 41. Inside the corner member body 41, the three first screws SC1 pass through three screw insertion holes 511a in the first plate portion 511 of the first frame-side metal plate 51 and three screw insertion holes 41a1 formed in the first side surface 41a of the corner member body 41, and are screwed into three screw holes 52a of the second frame-side metal plate 52 inside the lower frame 22. As shown in Figure 11, the head SC1a of the first screw SC1 seats on the first plate portion 511 of the first frame-side metal plate 51 inside the corner member body 41.

[0042] The three second screws SC2 are inserted through screw insertion holes 41d1 formed in the fourth side surface 41d of the corner member body 41, penetrate the partition wall 415b, and are housed inside the corner member body 41. Furthermore, inside the corner member body 41, the three second screws SC2 penetrate the three screw insertion holes 512a in the second plate portion 512 of the first frame-side metal plate 51 and the three screw insertion holes 41b1 in the second side surface 41b of the corner member body 41, and are screwed into the three screw holes 52a of the second frame-side metal plate 52 inside the vertical frame 23. As shown in Figure 11, the heads SC2a of the second screws SC2 seat on the second plate portion 512 of the first frame-side metal plate 51 inside the corner member body 41.

[0043] As the first screw SC1 and the second screw SC2 are tightened, the first screw SC1 and the second screw SC2 pull the second frame-side metal plates 52 inside the lower frame 22 and the vertical frame 23, respectively, toward the first frame-side metal plate 51. The second frame-side metal plate 52 inside the lower frame 22 clamps the partition wall 22e, which is the resin portion at the end of the lower frame 22, between itself and the first side surface 41a of the frame-side corner member 4, thereby bringing the lower frame 22 and the frame-side corner member 4 into close contact. The second frame-side metal plate 52 inside the vertical frame 23 clamps the partition wall 23e, which is the resin portion at the end of the vertical frame 23, between itself and the second side surface 41b of the frame-side corner member 4, thereby bringing the vertical frame 23 and the frame-side corner member 4 into close contact. As a result, the frame-side corner member 4 is fastened together between the first frame-side metal plate 51 and the two second frame-side metal plates 52, and fixed to the end face 220 of the lower frame 22 and the end face 230 of the vertical frame 23, connecting the horizontal member, the lower frame 22, and the vertical member, the vertical frame 23.

[0044] The lower frame 22 and the vertical frame 23 are clamped between the first plate portion 511 and the second plate portion 512 of the first frame-side metal plate 51 and the surface of the second frame-side metal plate 52, and are fastened with the first screw SC1 and the second screw SC2, thus minimizing the load effects such as deformation on the frame 2 itself. Therefore, deformation of the lower frame 22 and the vertical frame 23, and a decrease in strength due to stress relaxation of the resin material over time are less likely to occur. The partition walls 22e and 23e of the lower frame 22 and the vertical frame 23 are arranged perpendicular to the surface direction of the first frame-side metal plate 51 and the second frame-side metal plate 52, further increasing their durability against the load of tightening torque.

[0045] When constructing the frame 2, a first frame-side metal plate 51, having a first plate portion 511 for connecting the lower frame 22 and a second plate portion 512 for connecting the vertical frame 23, is placed between the end face 220 of the lower frame 22 and the end face 230 of the vertical frame 23. The second frame-side metal plate 52 is then housed inside the first frame-side metal plate 51 at a position closer to the center in the extension direction than the end face 220 of the lower frame 22 and the end face 230 of the vertical frame 23. Subsequently, a first screw SC1 is screwed from the first plate portion 511 of the first frame-side metal plate 51 to the second frame-side metal plate 52 housed in the lower frame 22, and then a second screw SC2 is screwed from the second plate portion 512 of the first frame-side metal plate 51 to the second frame-side metal plate 52 housed in the vertical frame 23. This connects the lower frame 22 and the vertical frame 23. The upper frame 21 and the left and right vertical frames 23 and 24, as well as the lower frame 22 and the vertical frame 24, are connected in the same manner.

[0046] After attaching the frame-side corner member 4, which houses the first frame-side metal plate 51, across the end face 220 of the lower frame 22 and the end face 230 of the vertical frame 23, the frame-side corner member 4 is fastened together with the first frame-side metal plate 51 and the second frame-side metal plates 52 of the lower frame 22 and the vertical frame 23 using the first screw SC1 and the second screw SC2, thereby connecting the lower frame 22 and the vertical frame 23 in an aesthetically pleasing manner. Similarly, frame-side corner members 4 can be placed between the upper frame 21 and the left and right vertical frames 23 and 24, and between the lower frame 22 and the vertical frame 24.

[0047] The frame 2, constructed in this manner, does not require assembly work in a factory and can be easily assembled at the construction site. Since there is no need to transport the finished frame 2 to the construction site, the volume of the product during transport can be kept small, and transportation costs are reduced.

[0048] When assembling and constructing the frame 2, horizontal members (upper frame 21 and lower frame 22) and vertical members (vertical frames 23, 24) with the second frame-side metal plate 52 already inserted may be prepared in advance, and the frame-side corner members 4 having the first frame-side metal plate 51 may be attached across the horizontal and vertical members. Alternatively, the frame-side corner members 4 having the first frame-side metal plate 51 may be attached across the horizontal and vertical members, and then the second frame-side metal plate 52 may be inserted into the interior of the horizontal and vertical members.

[0049] In the joinery 1 of this embodiment, the frame is not limited to that which constitutes an opening window. The frame may be a frame which constitutes a sliding window. The frame may be a frame which constitutes a double-hung window. The frame may be a frame which constitutes a fixed window. The frame may be a frame which constitutes a casement window.

[0050] Next, I will explain shoji screen 3.

[0051] As shown in Figures 3 and 4, the shoji screen 3 is constructed by housing a facing material P on the inner circumference of a frame body 30, which is formed by assembling an upper frame 31, a lower frame 32, and a pair of left and right vertical frames 33, 34 in a rectangular shape. In this embodiment, the facing material P is made up of three glass plates stacked with spacers in between, but the facing material P may be made up of one or two glass plates, or it may be made up of an opaque panel.

[0052] The upper frame 31 extends horizontally at the top of the frame body 30. The lower frame 32 extends horizontally at the bottom of the frame body 30. The vertical frames 33 and 34 extend vertically at the left and right vertical sections of the frame body 30, respectively. The frame body 30 has a vertically dominant structure in which the upper frame 31 and lower frame 32 are positioned between the upper and lower ends of a pair of left and right vertical frames 33 and 34.

[0053] The upper frame 31 and lower frame 32 constitute the horizontal members of the frame body 30. The vertical frames 33 and 34 constitute the vertical members of the frame body 30. The upper frame 31, lower frame 32, and vertical frames 33 and 34 are all hollow and have the same cross-sectional shape. The upper frame 31 and lower frame 32, which are horizontal members, are arranged symmetrically vertically, while the vertical frames 33 and 34, which are vertical members, are arranged symmetrically horizontally. The upper frame 31, lower frame 32, and vertical frames 33 and 34, like the frame body 2, are all extruded resin products made by extruding resin material along their respective extension directions.

[0054] As shown in Figures 3 and 4, the upper frame 31, lower frame 32, and vertical frames 33, 34 are composed of outer peripheral wall portions 31a, 32a, 33a, 34a, inner peripheral wall portions 31b, 32b, 33b, 34b, exterior wall portions 31c, 32c, 33c, 34c, and interior wall portions 31d, 32d, 33d, 34d. Recesses 311, 321, 331, 341 are formed in the center of the outer peripheral wall portions 31a, 32a, 33a, 34a in the depth direction, extending along the entire length in the extension direction of the upper frame 31, lower frame 32, and vertical frames 33, 34.

[0055] Inside the upper frame 31, lower frame 32, and vertical frames 33, 34, two partition walls 31e, 32e, 33e, and 34e are formed, each spaced apart in the depth direction. The partition walls 31e, 32e, 33e, and 34e are provided across the outer periphery walls 31a, 32a, 33a, 34a and the inner periphery walls 31b, 32b, 33b, 34b, and extend along the extension direction of the upper frame 31, lower frame 32, and vertical frames 33, 34. As a result, three hollow sections S11, S12, and S13 are formed inside the upper frame 31, lower frame 32, and vertical frames 33, 34, respectively, aligned in the depth direction from the exterior side X1 to the interior side X2. The recesses 311, 321, 331, and 341 are located between pairs of partition walls 31e, 32e, 33e, and 34e.

[0056] In the upper frame 31, lower frame 32, and vertical frames 33, 34, the hollow section S13, the innermost of the three hollow sections S11, S12, S13 (X2), protrudes toward the outer and inner periphery. As a result, the ends of the outer periphery walls 31a, 32a, 33a, 34a and inner periphery walls 31b, 32b, 33b, 34b corresponding to the hollow section S13, on the inner side X2, are formed to rise toward the outer and inner periphery. The parts rising toward the outer periphery constitute contact sections 312, 322, 332, 342 that abut against the frame 2 from the inner side X2 when the shoji screen 3 is closed. The parts rising toward the inner periphery constitute surface material support sections 313, 323, 333, 343 that support the surface material P housed on the inner side of the frame 30 from the inner side X2.

[0057] The exterior side X1 of the facing material P is supported by trim pieces 314, 324, 334, and 344 provided at the ends of the exterior side X1 of the inner peripheral wall portions 31b, 32b, 33b, and 34b. In the frame 30 shown in Figures 5, 12, 14, and 15, the facing material P and trim pieces 314, 324, 334, and 344 are not shown.

[0058] Next, the structure of the connection between the horizontal members, the upper frame 31 and lower frame 32, and the vertical members, the vertical frame 33 and 44, in the frame body 30 will be described. The frame 3 has four connection points, but below, the structure of the connection between the upper frame 31 and the vertical frame 33 at section C, indicated by the arrow in Figure 5, will be described with reference to Figures 12 to 17.

[0059] As mentioned above, the upper frame 31 and the lower frame 32 are arranged symmetrically vertically, and the vertical frame 33 and the vertical frame 34 are arranged symmetrically horizontally. Therefore, the structure and description of the connection between the horizontal member, the upper frame 31, and the vertical member, the vertical frame 33, in section C also apply to the other connection points between horizontal and vertical members, namely the connection points between the lower frame 32 and the vertical frames 33 and 34, and the connection point between the upper frame 31 and the vertical frame 34.

[0060] The end faces 310 of the upper frame 31 are perpendicular to the extension direction of the upper frame 31. Similarly, the end faces 330 of the vertical frame 33 are perpendicular to the extension direction of the vertical frame 33. This eliminates the need to process the end faces 310 and 330 of the upper frame 31 and vertical frame 33 to precise angles, such as when they are cut at a 45° angle and then assembled together, thus simplifying the manufacturing process.

[0061] As shown in Figures 13, 14, and 15, the end portion X2 on the interior side of the outer peripheral wall portion 33a of the vertical frame 33 and the interior wall portion 33d extend along the direction of extension of the vertical frame 33 relative to other parts. The extended portion constitutes the extension portion 334 of the vertical frame 33. As shown in Figure 13, the extension portion 334 extends to approximately the same position as the outer peripheral wall portion 31a of the upper frame 31.

[0062] As shown in Figures 12 and 14, the end of the panel support portion 333 of the vertical frame 33 is notched in a rectangular shape. This creates a notched step portion 335 at the end of the panel support portion 333. The notched step portion 335 is the part that accommodates the end of the panel support portion 313 of the upper frame 31 when the upper frame 31 and the vertical frame 33 are connected.

[0063] The end face 310 of the upper frame 31 and the end face 330 of the vertical frame 33 are positioned perpendicular to each other, and a single resin frame-side corner member 6 is positioned between these end faces 310 and 330 to connect the upper frame 31 and the vertical frame 33. The frame-side corner member 6 is a corner member that connects the horizontal member and the vertical member of the frame 30. The frame-side corner member 6 abuts against the end face 310 of the upper frame 31 with a gasket 35, which is a sealing material, in between, and abuts against the end face 330 of the vertical frame 33 with a gasket 36, which is a sealing material, in between.

[0064] The frame-side corner members 6 positioned at the four connection points of the frame body 30 have the same structure. The frame-side corner members 6, 6 positioned at both the left and right ends of the upper frame 31 are symmetrical left to right, and the frame-side corner members 6, 6 positioned at both the upper and lower ends of the vertical frames 33, 34 are symmetrical up and down.

[0065] As shown in Figures 12 to 16C, the frame-side corner member 6 has a corner member body 61 that fills the space between the end face 310 of the upper frame 31 and the end face 330 of the vertical frame 33. The corner member body 61 has a first side surface 61a facing the end face 310 of the upper frame 31, a second side surface 61b facing the end face 330 of the vertical frame 33, a third side surface 61c facing the exterior side X1, a fourth side surface 61d located on the opposite side of the second side surface 61b, and a fifth side surface 61e facing the interior side X2. In the corner member body 61, the end surface 61f opposite to the first side surface 61a is open. The first side surface 61a has a shape that follows the shape of the end face 310 of the upper frame 31. The second side surface 61b has a shape that follows the shape of the end face 330 of the vertical frame 33. The first side surface 61a, the second side surface 61b, the third side surface 61c, the fourth side surface 61d, and the fifth side surface 61e are orthogonal to each other.

[0066] The first side surface 61a has two protrusions 611a and 611b projecting toward the upper frame 31. The second side surface 61b has two protrusions 612a and 612b projecting toward the vertical frame 33. The protrusions 611a and 611b penetrate the gasket 35 and are inserted into the hollow sections S11 and S13 of the upper frame 31, respectively. The protrusions 612a and 612b penetrate the gasket 36 and are inserted into the hollow sections S11 and S13 of the vertical frame 33, respectively. As a result, the frame-side corner member 6 is positioned in the correct location between the end face 310 of the upper frame 31 and the end face 330 of the vertical frame 33, and connects the upper frame 31 and the vertical frame 33 so as to intersect at a right angle. In other words, the upper frame 31 and the vertical frame 33 are positioned in the correct location by the frame body side corner member 6.

[0067] The ends of the second side 61b and fourth side 61d of the corner member body 61, on the indoor side X2, each have protruding portions 613 and 614 that project in the vertical direction. The protruding portion 613 projecting from the second side 61b is positioned to fill the gap between the contact portion 312 of the upper frame 31 and the extension portion 334 of the vertical frame 33, as shown in Figures 12 and 13. A covering plate portion 613a is formed at the tip of the protruding portion 613 to cover the end face 334a of the extension portion 334 of the vertical frame 33. As shown in Figure 13, the covering plate portion 613a is positioned flush with the outer circumferential surface of the contact portion 312 of the upper frame 31. The protruding portion 614 projecting from the fourth side 61d is provided along the convex portion 612b projecting from the second side 61b. As shown in Figure 12, the protruding portion 614 is sandwiched between the end face 310 of the upper frame 31 and the notched step portion 336 of the vertical frame 33, while the upper frame 31 and the vertical frame 33 are connected.

[0068] As shown in Figure 12, the third side surface 61c of the corner member body 61 facing the exterior side X1 is exposed towards the exterior side X1 between the upper frame 31 and the vertical frame 33, and is positioned flush with the exterior wall portion 31c of the upper frame 31 and the exterior wall portion 33c of the vertical frame 33. The fourth side surface 61d of the corner member body 61, opposite to the second side surface 61b, is positioned flush with the outer peripheral wall portion 31a of the upper frame 31. A recess 615a is formed on the fourth side surface 61d, which is continuous with the recess 311 of the upper frame 31, and a recess 615b is formed on the end surface 61f, which is continuous with the recess 331 of the vertical frame 33.

[0069] The fifth side surface 61e of the corner member body 61 facing the interior side X2 is covered by the extension 334 of the vertical frame 33. Therefore, the frame-side corner member 6 is not visible from the interior side X2. The end surface 61f of the corner member body 61 opposite to the first side surface 61a is open and is positioned flush with the outer peripheral wall portion 33a of the vertical frame 33. The portion of the corner member body 61 on the interior side X2 corresponding to the abutment portion 332 of the vertical frame 33 is also covered by the extension 334 of the vertical frame 33. As a result, as shown in Figures 1, 5, 12, and 13, the connection between the upper frame 31 and the vertical frame 33 where the frame-side corner member 6 is positioned forms a corner where the upper frame 31 and the vertical frame 33 intersect at right angles.

[0070] The corner member body 61 has a hollow structure, similar to the corner member body 41 of the frame-side corner member 4. As shown in Figures 16C and 17, the interior of the corner member body 61 is divided into a grid by multiple partition walls 616a and 616b that extend vertically and horizontally. The partition walls 616a that extend vertically are provided across the opposing second side surface 61b and fourth side surface 61d of the corner member body 61 and are arranged parallel to each other with spacing in the depth direction. The multiple partition walls 616b that extend horizontally are provided across the opposing third side surface 61c and fifth side surface 61e of the corner member body 61 and are arranged parallel to each other with spacing in the vertical direction. This increases the strength of the corner member body 61.

[0071] As shown in Figures 12, 14, and 15, a U-shaped first frame-side metal plate insertion groove 617 is formed on the third side surface 61c of the corner member body 61. The first frame-side metal plate insertion groove 617 is a groove for inserting the first frame-side metal plate 71 into the interior of the corner member body 61 from the exterior side X1. The first frame-side metal plate insertion groove 617 is formed to penetrate the partition wall 616a inside the corner member body 61 from the third side surface 61c.

[0072] The first frame-side metal plate 71 is a first metal plate for connecting the horizontal member and the vertical member in the frame 30. As shown in Figures 14 and 15, the first frame-side metal plate 71 is formed by an L-shaped piece integrally having a first plate portion 711 positioned along the first side surface 61a of the corner member body 61 and a second plate portion 712 positioned along the second side surface 61b of the corner member body 61. The first plate portion 711 and the second plate portion 712 are bent perpendicularly to each other. Two screw insertion holes 711a and 712a are formed in the first plate portion 711 and the second plate portion 712, respectively.

[0073] As shown in Figures 14 and 15, the first frame-side metal plate 71 is inserted from the outside X1 into the first frame-side metal plate insertion groove 617 of the corner member body 61 and housed inside the corner member body 61. As shown in Figure 17, inside the corner member body 61, the first plate portion 711 abuts along the first side surface 61a and is positioned parallel to the end surface 310 of the upper frame 31. The second plate portion 712 abuts along the second side surface 61b and is positioned parallel to the end surface 330 of the vertical frame 33.

[0074] As shown in Figures 12, 14, 15, and 17, second frame-side metal plates 72 are housed at both ends of the upper frame 31 and the vertical frame 33, respectively. The second frame-side metal plates 72 are second metal plates for connecting the horizontal member and the vertical member in the frame 30. The second frame-side metal plates 72 are housed near the end face 310 of the upper frame 31 and the end face 330 of the vertical frame 33, respectively. Specifically, the second frame-side metal plate 72 of the upper frame 31 is located inside the upper frame 31, closer to the center in the extension direction of the upper frame 31 (to the right in Figure 17) than the end face 310 of the upper frame 31. The second frame-side metal plate 72 of the vertical frame 33 is positioned inside the vertical frame 33, closer to the center in the extension direction of the vertical frame 33 (lower side in Figure 17) than the end face 330 of the vertical frame 33. That is, the resin portion at the end of the upper frame 31 is interposed between the second frame-side metal plate 72 in the upper frame 31 and the first side surface 61a of the frame-side corner member 6, and the resin portion at the end of the vertical frame 33 is interposed between the second frame-side metal plate 72 in the vertical frame 33 and the second side surface 61b of the frame-side corner member 6. In the joinery 1, one first frame-side metal plate 71 and two second frame-side metal plates 72, 72 constitute a group of connecting fittings 7 that connect the horizontal member and the vertical member of the frame 30 of the shoji screen 3.

[0075] As shown in Figures 12, 14, and 17, the upper frame 31 has second frame-side metal plate insertion grooves 315 and 336 formed therein for inserting the second frame-side metal plate 72. The second frame-side metal plate insertion groove 315 of the upper frame 31 extends linearly in the depth direction parallel to the end face 310 of the upper frame 31. The second frame-side metal plate insertion groove 315 is cut from the inner circumferential wall portion 31b of the upper frame 31 to the internal partition wall 31e, in a direction perpendicular to the extension direction of the partition wall 31e. The second frame-side metal plate insertion groove 336 of the vertical frame 33 extends linearly in the depth direction parallel to the end face 330 of the vertical frame 33. The second frame-side metal plate insertion groove 336 is cut from the inner peripheral wall portion 33b of the vertical frame 33 to the internal partition wall 33e, in a direction perpendicular to the extension direction of the partition wall 33e.

[0076] As shown in Figures 14 and 15, the second frame-side metal plate 72 is formed in a flat shape and has two screw holes 72a that correspond to the positions of the two screw insertion holes 711a and 712a formed in the first plate portion 711 and the second plate portion 712 of the first frame-side metal plate 71. Female threads are provided in the screw holes 72a.

[0077] As shown in Figures 14 and 15, the second frame-side metal plate 72 is inserted from the inner circumference of the frame 30 into the second frame-side metal plate insertion grooves 315 and 336 of the upper frame 31 and vertical frame 33, respectively, and is housed inside the upper frame 31 and vertical frame 33. As shown in Figure 17, the second frame-side metal plate 72 housed in the upper frame 31 is positioned parallel to the first plate portion 711 of the first frame-side metal plate 71 inside the corner member body 61 within the upper frame 31. The second frame-side metal plate 72 housed in the vertical frame 33 is positioned parallel to the second plate portion 712 of the first frame-side metal plate 71 inside the corner member body 61 within the vertical frame 33.

[0078] The frame-side corner member 6, positioned at the corner between the upper frame 31 and the vertical frame 33, is fixed between the upper frame 31 and the vertical frame 33 by two first screws SC11 and two second screws SC12, as shown in Figures 14, 15, and 17.

[0079] The two first screws SC11 are inserted into the corner member body 61 from the end face 61f of the corner member body 61, which is positioned on the elongating end face of the upper frame 31. Inside the corner member body 61, the two first screws SC11 pass through two screw insertion holes 711a in the first plate portion 711 of the first frame-side metal plate 71 and two screw insertion holes 61a1 formed in the first side surface 61a of the corner member body 61, and are screwed into two screw holes 72a of the second frame-side metal plate 72 inside the upper frame 31. The heads SC11a of the two first screws SC11 seat on the first plate portion 711 of the first frame-side metal plate 71 inside the corner member body 61.

[0080] The two second screws SC12 are inserted through screw insertion holes 61d1 formed in the fourth side surface 61d of the corner member body 61, penetrate the partition wall 616b, and are housed inside the corner member body 61. Inside the corner member body 61, the two second screws SC12 penetrate two screw insertion holes 712a in the second plate portion 712 of the first frame-side metal plate 71 and two screw insertion holes 61b1 formed in the second side surface 61b of the corner member body 61, and are screwed into two screw holes 72a in the second frame-side metal plate 72 inside the vertical frame 33. The heads SC12a of the two second screws SC12 seat on the second plate portion 712 of the first frame-side metal plate 71 inside the corner member body 61.

[0081] As the first screw SC11 and the second screw SC12 are tightened, the first screw SC11 and the second screw SC12 pull the second frame-side metal plates 72 inside the upper frame 31 and the vertical frame 33, respectively, toward the first frame-side metal plate 71. The second frame-side metal plate 72 inside the upper frame 31 clamps the partition wall 31e of the upper frame 31 between itself and the first side surface 61a of the frame-side corner member 6, bringing the upper frame 31 and the frame-side corner member 6 into close contact. The second frame-side metal plate 72 inside the vertical frame 33 clamps the partition wall 33e of the vertical frame 33 between itself and the second side surface 61b of the frame-side corner member 6, bringing the vertical frame 33 and the frame-side corner member 6 into close contact.

[0082] As a result, the frame-side corner member 6 is fastened together between the first frame-side metal plate 71 and the two second frame-side metal plates 72, and fixed to the end face 310 of the upper frame 31 and the end face 330 of the vertical frame 33, connecting the horizontal member, the upper frame 31, and the vertical member, the vertical frame 33. The upper frame 31 and the vertical frame 33 are clamped between the first plate portion 711 and the second plate portion 712 of the first frame-side metal plate 71 and the surface of the second frame-side metal plate 72, and are fastened with the first screw SC11 and the second screw SC12, so that the frame 30 itself is not subjected to much load influence such as deformation. Therefore, deformation of the upper frame 31 and the vertical frame 33, and a decrease in strength due to stress relaxation of the resin material over time are less likely to occur. Since the partition walls 31e and 33e of the upper frame 31 and the vertical frame 33 are arranged perpendicular to the plane direction of the first frame-side metal plate 71 and the second frame-side metal plate 72, the durability against tightening torque loads is further enhanced.

[0083] When constructing the frame 30 of the shoji screen 3, a first frame-side metal plate 71 having a first plate portion 711 connecting to the upper frame 31 and a second plate portion 712 connecting to the vertical frame 33 is placed between the end face 310 of the upper frame 31 and the end face 330 of the vertical frame 33, and a second frame-side metal plate 72 is housed inside at a position closer to the center in the extension direction than the end face 310 of the upper frame 31 and the end face 330 of the vertical frame 33. Subsequently, the first screw SC11 is screwed from the first plate portion 711 of the first frame-side metal plate 71 to the second frame-side metal plate 72 which is housed in the upper frame 31, and the second screw SC12 is screwed from the second plate portion 712 of the first frame-side metal plate 71 to the second frame-side metal plate 72 which is housed in the vertical frame 33. This connects the upper frame 31 and the vertical frame 33. The upper frame 31 and the left and right vertical frames 33 and 34, and the lower frame 32 and the vertical frame 34 are connected in the same manner.

[0084] After attaching the frame-side corner member 6, which houses the first frame-side metal plate 71 inside, across the end face 310 of the upper frame 31 and the end face 330 of the vertical frame 33, the frame-side corner member 6 is fastened together with the first frame-side metal plate 71 and the second frame-side metal plates 72 of the upper frame 31 and vertical frame 33 using the first screw SC11 and the second screw SC12, thereby connecting the upper frame 31 and vertical frame 33 and creating a visually appealing connection at the corner between the upper frame 31 and vertical frame 33. Similarly, frame-side corner members 6 can be placed between the lower frame 32 and the left and right vertical frames 33 and 34, and between the upper frame 31 and vertical frame 34.

[0085] The frame 30 of the shoji screen 3, constructed in this manner, does not require assembly work in a factory and can be easily assembled and installed at the construction site. Since there is no need to transport the finished frame 30 to the construction site, the volume of the product during transport can be kept small, and transportation costs are reduced.

[0086] When assembling and constructing the frame 30, horizontal members (upper frame 31 and lower frame 32) and vertical members (vertical frame 33, 34) with the second frame-side metal plate 72 already inserted may be prepared in advance, and the frame-side corner members 6 having the first frame-side metal plate 71 may be attached across the horizontal and vertical members. Alternatively, the frame-side corner members 6 having the first frame-side metal plate 71 may be attached across the horizontal and vertical members, and then the second frame-side metal plate 72 may be inserted into the interior of the horizontal and vertical members.

[0087] In the joinery 1 of this embodiment, the second frame-side metal plates 52, 72 housed inside the frame 2 and frame 30 are not limited to being inserted from the inner periphery of the frame 2 and frame 30. The second frame-side metal plates 52, 72 may be inserted from the visible surface of the frame 2 and frame 30 facing the exterior X1 or interior X2.

[0088] In the joinery 1 of this embodiment, the structure for connecting the horizontal member and the vertical member using connecting fittings 5, 7 and corner members (frame-side corner member 4, frame-side corner member 6) is not limited to being applied to both the frame 2 and the frame 30 of the sliding door 3. The connection structure between the horizontal member and the vertical member described above may be applied only to the frame 2 or only to the frame 30 of the sliding door 3.

[0089] In the joinery 1 of this embodiment, the shoji screen is not limited to those that constitute a casement window. The shoji screen may also constitute a sliding window. The shoji screen may also constitute a double-hung window. The shoji screen may also constitute a fixed window. The shoji screen may also constitute a casement window.

[0090] In this embodiment, the frame 2 has a vertically dominant structure, but the frame may also have a horizontally dominant structure in which a pair of left and right vertical frames are positioned between the left and right ends of the upper and lower frames. Furthermore, in this embodiment, the frame 30 has a vertically dominant structure, but the frame may also have a horizontally dominant structure in which a pair of left and right vertical frames are positioned between the left and right ends of the upper and lower frames.

[0091] In this embodiment, the example of the joinery 1 shows that both the frame 2 and the frame 30 of the sliding door 3 are made of resin. However, the frame 2 may be made of resin and the frame may be made of a metal such as aluminum, or the frame 30 may be made of resin and the frame may be made of a metal such as aluminum. Corner members can be provided in the same way on metal frames or frame bodies.

[0092] The following effects are achieved according to the joinery 1 and the method of installing joinery 1 of this embodiment.

[0093] The joinery 1 of this embodiment is a joinery 1 in which a shoji screen 3 having a frame 30 on the inner circumference side of a frame 2 is housed, and at least one of the frame 2 and the frame 30 is made of resin, the frame 2 has an upper frame 21 and a lower frame 22 as horizontal members, and a pair of left and right vertical frames 23 and 24 as vertical members, the frame 30 has an upper frame 31 and a lower frame 32 as horizontal members, and a pair of left and right vertical frames 33 and 34 as vertical members, and between the end faces of at least one of the resin horizontal members of the frame 2 and the frame 30 (end face 220 of the lower frame 22, end face 310 of the upper frame 31) and the end faces of the vertical members (end face 230 of the vertical frame 23, end face 330 of the vertical frame 33), there are first plate portions 511 and 711 that connect the horizontal members and second plate portions that connect the vertical members A first metal plate (first frame-side metal plate 51, first frame-side metal plate 71) having plate portions 512, 712 is arranged, and a second metal plate (second frame-side metal plate 52, second frame-side metal plate 72) is housed inside at a position closer to the center in the extension direction than the end faces of the horizontal member and the end faces of the vertical member, respectively. First screws SC1, SC11 are screwed from the first plate portions 511, 711 of the first metal plates 51, 71 to the second metal plates 52, 72 housed in the horizontal member, and second screws SC2, SC12 are screwed from the second plate portions 512, 712 of the first metal plates 51, 71 to the second metal plates 52, 72 housed in the vertical member, thereby connecting the horizontal member and the vertical member. According to this, at least one of the frame 2 and the frame 30 of the sliding door 3 can be easily assembled and installed at the construction site from their component parts. Since it is not necessary to transport the finished frame 2 or frame 30 to the construction site, the volume of products to be transported can be kept small, and transportation costs can be reduced. Moreover, since it is not necessary to directly drive screws into the upper frame 21, lower frame 22 and vertical frames 23, 24 of the resin frame 2, or the upper frame 31, lower frame 32 and vertical frames 33, 34 of the frame 30, there is no risk of deformation due to the tightening torque of screws acting on each component, or a decrease in strength due to stress relaxation over time, which is characteristic of resin materials.

[0094] In this embodiment, corner members (frame-side corner member 4, frame-side corner member 6) are attached across the end faces of the horizontal members and the vertical members. The corner members 4 and 6 house the first metal plates 51 and 71 inside and are fastened together between the first metal plates 51 and 71 and the second metal plates 52 and 72 of the horizontal and vertical members, respectively, using first screws SC1 and SC11 and second screws SC2 and SC12. As a result, the corner members 4 and 6 are positioned between the horizontal and vertical members, which improves the appearance of each connection point of the frame 2 or frame 30.

[0095] In this embodiment, the corner members 4 and 6 have first metal plate insertion grooves (first frame-side metal plate insertion groove 416, first frame-side metal plate insertion groove 617) into which the first metal plates 51 and 71 are inserted. With this configuration, the corner members 4 and 6 that house the first metal plates 51 and 71 can be easily constructed by inserting the first metal plates 51 and 71 through the first metal plate insertion grooves 416 and 617.

[0096] In this embodiment, the horizontal and vertical members each have hollow portions S1, S2, S3, S11, S12, S13 extending along their respective extension directions, and the corner members 4 and 6 have protrusions 411a, 411b, 411c, 412a, 412b, 412c, 611a, 611b, 612a, 612b that are inserted into the hollow portions S1, S2, S3, S11, S12, S13 of the horizontal and vertical members, respectively. This allows the corner members 4 and 6 to be easily positioned at the appropriate location between the end face of the horizontal member and the end face of the vertical member. Therefore, the horizontal and vertical members can be positioned at the appropriate location where they intersect at a predetermined angle via the corner members 4 and 6.

[0097] In this embodiment, the horizontal and vertical members each have second metal plate insertion grooves (second frame-side metal plate insertion grooves 223, 235 and second frame-side metal plate insertion grooves 315, 337) into which the second metal plates 52, 72 are inserted. This allows the second metal plates 52, 72 to be easily accommodated inside the horizontal and vertical members.

[0098] In this embodiment, the end faces of the horizontal members and the vertical members are surfaces perpendicular to the extension direction of the horizontal and vertical members. This eliminates the need for precise cutting at a 45° angle as in the conventional method, making it easier to process the horizontal and vertical members.

[0099] The method for constructing the joinery 1 of this embodiment is a method for constructing joinery 1 in which a shoji screen 3 having a frame body 30 is housed on the inner circumference side of a frame body 3, and at least one of the frame body 2 and the frame body 30 is made of resin, wherein the frame body 2 has an upper frame 21 and a lower frame 22 as horizontal members, and a pair of left and right vertical frames 23 and 24 as vertical members, and the frame body 30 has an upper frame 31 and a lower frame 32 as horizontal members, and a pair of left and right vertical frames 33 and 34 as vertical members, and between the end faces of at least one of the resin horizontal members of the frame body 2 and the frame body 30 (end face 220 of the lower frame 22, end face 310 of the upper frame 31) and the end faces of the vertical members (end face 230 of the vertical frame 23, end face 330 of the vertical frame 33), there are first plate portions 511, 711 that connect the horizontal members, and vertical A first metal plate (first frame-side metal plate 51, first frame-side metal plate 71) having second plate portions 512, 712 for connecting members is arranged, and a second metal plate (second frame-side metal plate 52, second frame-side metal plate 72) is housed inside at a position closer to the center in the extension direction than the end faces of the horizontal member and the end faces of the vertical member, respectively. First screws SC1, SC11 are screwed from the first plate portions 511, 711 of the first metal plates 51, 71 to the second metal plates 52, 72 housed in the horizontal member, and second screws SC2, SC12 are screwed from the second plate portions 512, 712 of the first metal plates 51, 71 to the second metal plates 52, 72 housed in the vertical member, thereby connecting the horizontal member and the vertical member. According to this, at least one of the frame 2 and the frame 30 of the sliding door 3 can be easily assembled and installed at the construction site from their component parts. Since it is not necessary to transport the finished frame 2 or frame 30 to the construction site, the volume of products to be transported can be kept small, and transportation costs can be reduced. Moreover, since it is not necessary to directly drive screws into the upper frame 21, lower frame 22 and vertical frames 23, 24 of the resin frame 2, or the upper frame 31, lower frame 32 and vertical frames 33, 34 of the frame 30, there is no risk of deformation due to the tightening torque of screws acting on each component, or a decrease in strength due to stress relaxation over time, which is characteristic of resin materials.

[0100] In this embodiment, corner members (frame-side corner member 4, frame-side corner member 6) containing the first metal plates 51, 71 are attached between the end faces of the horizontal members and the end faces of the vertical members. Then, the corner members 4, 6 are fastened together with the first metal plates 51, 71 and the second metal plates 52, 72 of the horizontal and vertical members respectively using first screws SC1, SC11 and second screws SC2, SC12 to connect the horizontal and vertical members. As a result, the corner members 4, 6 are positioned between the horizontal and vertical members, which improves the appearance of each connection point of the frame 2 or frame 30.

[0101] This disclosure includes the following joinery and methods for installing joinery.

[0102] <Aspect 1> A sliding door having a frame on the inner circumference of a frame is housed within a frame, and at least one of the frame and the frame is made of resin, The frame comprises an upper frame and a lower frame as horizontal members, and a pair of left and right vertical frames as vertical members. The frame body comprises an upper frame and a lower frame as horizontal members, and a pair of left and right vertical frames as vertical members. A first metal plate is positioned between the end face of at least one of the resin horizontal members of the frame and the frame and the end face of the vertical member, having a first plate portion for connecting the horizontal member and a second plate portion for connecting the vertical member, and a second metal plate is housed inside at a position closer to the center in the extension direction than the end face of the horizontal member and the end face of the vertical member. A joinery device in which the horizontal member and the vertical member are connected by a first screw being threaded from the first plate portion of the first metal plate to the second metal plate housed in the horizontal member, and a second screw being threaded from the second plate portion of the first metal plate to the second metal plate housed in the vertical member.

[0103] <Aspect 2> A corner member is attached between the end face of the horizontal member and the end face of the vertical member. The joinery according to embodiment 1, wherein the corner member houses the first metal plate inside and is fastened together with the first metal plate and the second metal plates of the horizontal member and the vertical member by the first screw and the second screw.

[0104] <Aspect 3> The building fitting according to embodiment 2, wherein the corner member has a first metal plate insertion groove into which the first metal plate is inserted.

[0105] <Aspect 4> The horizontal member and the vertical member each have a hollow portion extending along the direction of extension. The joinery according to embodiment 2 or 3, wherein the corner member has a protrusion that is inserted into the hollow portion of the horizontal member and the vertical member, respectively.

[0106] <Aspect 5> The joinery according to any one of embodiments 1 to 4, wherein the horizontal member and the vertical member each have a second metal plate insertion groove into which the second metal plate is inserted.

[0107] <Aspect 6> The joinery according to any one of embodiments 1 to 5, wherein the end face of the horizontal member and the end face of the vertical member are surfaces perpendicular to the extension direction of the horizontal member and the vertical member.

[0108] <Aspect 7> A method for installing a door or window, wherein a sliding door having a frame on the inner circumference of a frame is housed within the frame, and at least one of the frame and the frame is made of resin, The frame comprises an upper frame and a lower frame as horizontal members, and a pair of left and right vertical frames as vertical members. The frame body comprises an upper frame and a lower frame as horizontal members, and a pair of left and right vertical frames as vertical members. A first metal plate is placed between the end face of at least one of the resin horizontal members of the frame and the frame and the end face of the vertical member, having a first plate portion for connecting the horizontal member and a second plate portion for connecting the vertical member. A second metal plate is housed inside the end face of the horizontal member and the end face of the vertical member, at a position closer to the center in the extensional direction. A method for installing a joinery, comprising screwing a first screw from the first plate portion of the first metal plate to the second metal plate housed in the horizontal member, and screwing a second screw from the second plate portion of the first metal plate to the second metal plate housed in the vertical member, thereby connecting the horizontal member and the vertical member.

[0109] <Aspect 8> After attaching a corner member containing the first metal plate between the end face of the horizontal member and the end face of the vertical member, The method for installing a joinery according to embodiment 7, wherein the corner member is fastened together with the first metal plate and the second metal plates of the horizontal member and the vertical member using the first screw and the second screw, thereby connecting the horizontal member and the vertical member. [Explanation of Symbols]

[0110] 1 Door / window, 2 Frame, 21 Upper frame (horizontal member), 22 Lower frame (horizontal member), 23,24 Vertical frame (vertical member), 220 End face of lower frame, 223,235 Second frame side metal plate insertion groove (second metal plate insertion groove), 230 End face of vertical frame, 3 Shoji screen, 30 Frame, 31 Upper frame (horizontal member), 32 Lower frame (horizontal member), 33,34 Vertical frame (vertical member), 310 End face of upper frame, 315,337 Second frame side metal plate insertion groove (second metal plate insertion groove), 330 End face of vertical frame, 4 Frame side corner member (corner member), 411a, 411b, 411c, 412a, 412b, 412c protrusions, 416 first frame-side metal plate insertion groove (first metal plate insertion groove), 51 first frame-side metal plate (first metal plate), 52 second frame-side metal plate (second metal plate), 511 first plate section, 512 second plate section, 6 frame-side corner member (corner member), 611a, 611b, 612a, 612b protrusions, 617 first frame-side metal plate insertion groove (first metal plate insertion groove), 71 first frame-side metal plate (first metal plate), 72 second frame-side metal plate (second metal plate), 711 first plate section, 712 second plate section, S1, S2, S3, S11, S12, S13 Hollow section, SC1, SC11 First thread, SC2, SC12 Second thread

Claims

1. A sliding door having a frame on the inner circumference of a frame is housed within a frame, and at least one of the frame and the frame is made of resin, The frame comprises an upper frame and a lower frame as horizontal members, and a pair of left and right vertical frames as vertical members. The frame body comprises an upper frame and a lower frame as horizontal members, and a pair of left and right vertical frames as vertical members. A first metal plate is positioned between the end face of at least one of the resin horizontal members of the frame and the end face of the vertical member, having a first plate portion for connecting the horizontal member and a second plate portion for connecting the vertical member, and a second metal plate is housed inside at a position closer to the center in the extension direction than the end face of the horizontal member and the end face of the vertical member. A joinery device in which the horizontal member and the vertical member are connected by a first screw being threaded from the first plate portion of the first metal plate to the second metal plate housed in the horizontal member, and a second screw being threaded from the second plate portion of the first metal plate to the second metal plate housed in the vertical member.

2. A corner member is attached between the end face of the horizontal member and the end face of the vertical member. The joinery according to claim 1, wherein the corner member houses the first metal plate inside and is fastened together with the first metal plate and the second metal plates of the horizontal member and the vertical member by the first screw and the second screw.

3. The joinery according to claim 2, wherein the corner member has a first metal plate insertion groove into which the first metal plate is inserted.

4. The horizontal member and the vertical member each have a hollow portion extending along the direction of extension. The joinery according to claim 2 or 3, wherein the corner member has a protrusion that is inserted into the hollow portion of the horizontal member and the vertical member, respectively.

5. The joinery according to any one of claims 1 to 3, wherein the horizontal member and the vertical member each have a second metal plate insertion groove into which the second metal plate is inserted.

6. The joinery according to any one of claims 1 to 3, wherein the end face of the horizontal member and the end face of the vertical member are surfaces perpendicular to the extension direction of the horizontal member and the vertical member.

7. A method for installing a door or window, wherein a sliding door having a frame on the inner circumference of a frame is housed within the frame, and at least one of the frame and the frame is made of resin, The frame comprises an upper frame and a lower frame as horizontal members, and a pair of left and right vertical frames as vertical members. The frame body comprises an upper frame and a lower frame as horizontal members, and a pair of left and right vertical frames as vertical members. A first metal plate is placed between the end face of at least one of the resin horizontal members of the frame and the frame and the end face of the vertical member, having a first plate portion for connecting the horizontal member and a second plate portion for connecting the vertical member. A second metal plate is housed inside the end face of the horizontal member and the end face of the vertical member, at a position closer to the center in the extensional direction. A method for installing a joinery, comprising screwing a first screw from the first plate portion of the first metal plate to the second metal plate housed in the horizontal member, and screwing a second screw from the second plate portion of the first metal plate to the second metal plate housed in the vertical member, thereby connecting the horizontal member and the vertical member.

8. After attaching a corner member containing the first metal plate between the end face of the horizontal member and the end face of the vertical member, The method for installing a joinery piece according to claim 7, wherein the corner member is fastened together with the first metal plate and the second metal plates of the horizontal member and the vertical member using the first screw and the second screw, thereby connecting the horizontal member and the vertical member.

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