Fitting

Abstract

To provide building materials with excellent durability.SOLUTION: A fitting 1 includes a first inter-rail attachment 6A and a second inter-rail attachment 6B which are detachably attached to a region of a lower frame 23 between an outdoor-side rail and an indoor-side rail and arranged side by side in the left-right direction, and a reinforcing member 8 arranged between the first inter-rail attachment 6A and the second inter-rail attachment 6B. The first inter-rail attachment 6A has a first end piece 62A. The second rail-to-rail attachment has a second end piece 62B. The first inner sliding sash 5A and the second inner sliding sash 5B are closed when a right stile 54A of a first inner sliding sash 5A and a left stile 53B of the second inner sliding sash 5B abut against each other. The reinforcing member 8 faces at least a part of the right stile 54A and the left stile 53B in the depth direction when the first inner sliding sash 5A and the second inner sliding sash 5B are in the closed state.SELECTED DRAWING: Figure 3

Description

[Technical Field]

[0001] The present disclosure relates to building materials. [Background technology]

[0002] Conventionally, there are so-called flat rail structure fittings in which the upper surface of the lower frame is configured to be approximately flat. In flat rail structure fittings, attachments are placed on the sides of the rails that guide the shoji screen, thereby suppressing the occurrence of unevenness caused by the rails.

[0003] To make it easier to attach and detach an attachment, a knob is formed at the end of the attachment for the user to grip (for example, Patent Document 1). [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Publication No. 2019-70310 Summary of the Invention [Problem to be solved by the invention]

[0005] Incidentally, when a fixture is a so-called four-panel fixture that has an exterior rail, an interior rail, two exterior shoji screens placed on the exterior rail, and two interior shoji screens placed on the interior rail, two attachments may be placed adjacent to each other. In this case, the knobs of the attachments will be adjacent to each other.

[0006] In addition, when the inner screen is closed, the adjacent knobs may overlap with the butt joints of the inner screens in the indoor / outdoor direction. In this case, if the closed inner screen is pushed by the air inside the room, the butt joints of the inner screens may be displaced outside the room and come into contact with each knob.

[0007] However, the knob is required to be configured to be easy for the user to grip. To improve the ease of gripping, methods such as forming holes for fingers to pass through or making the knob thinner can be considered, but these methods may result in a decrease in the strength of the knob.

[0008] The knobs may be deformed or damaged when pressed against the inner shoji screen. The above-mentioned fixtures have room for improvement in terms of durability.

[0009] The present disclosure aims to provide building materials that are highly durable. [Means for solving the problem]

[0010] The fittings of the present disclosure comprise a lower frame, an outdoor rail attached to the lower frame and extending in the left-right direction, an indoor rail attached to the lower frame at a distance from the outdoor rail toward the indoor side and extending in the left-right direction, a first inner shoji screen and a second inner shoji screen respectively arranged on the indoor rail, a first inter-rail attachment and a second inter-rail attachment respectively detachably attached to the area of the lower frame between the outdoor rail and the indoor rail and arranged side by side in the left-right direction, and a reinforcing member arranged between the first inter-rail attachment and the second inter-rail attachment. The first inter-rail attachment has a first end part provided at the end of the first inter-rail attachment on the second inter-rail attachment side, the second inter-rail attachment has a second end part provided at the end of the second inter-rail attachment on the first inter-rail attachment side, the first inner shroud and the second inner shroud each have a butt frame and the butt frames are butted together to form a closed state, and the reinforcing member faces at least a part of the butt frame in the front direction when the first inner shroud and the second inner shroud are in the closed state. [Brief explanation of the drawings]

[0011] [Figure 1] FIG. 1 is a front view of a fixture according to one embodiment, viewed from the inside of the room. [Figure 2] A vertical cross-sectional view of the lower frame area. [Figure 3] This is a plan view of the area around the butt frame. [Figure 4] FIG. [Figure 5] FIG. [Figure 6] A vertical cross-sectional view of a lower frame to which a reinforcing member is fixed. DETAILED DESCRIPTION OF THE INVENTION

[0012] Hereinafter, an embodiment of the present disclosure will be described in detail with reference to the drawings. As shown in Fig. 1, a fitting 1 of this embodiment is installed in an opening 101 of a building 100. The fitting 1 is a sliding window, and includes a frame 2 and a plurality of (specifically, four) shoji screens 4, 5. The opening shape of the opening 101 is approximately rectangular.

[0013] In this specification, "visible direction" refers to the direction in which the surfaces of the face materials of the shoji screens 4 and 5 of the fitting 1 placed in the opening 101 extend. "Left-right direction" refers to the horizontal direction in the visible direction, and refers to the left-right direction when the fitting 1 is viewed from inside the room. "Visible direction" refers to the thickness direction (i.e., the depth direction) of the face materials 49 and 59 of the shoji screens 4 and 5. "Visible direction" also refers to the direction from inside the room to outside.

[0014] The frame body 2 is a frame body provided along the periphery of the opening 101. The frame body 2 is formed in a rectangular frame shape. The frame body 2 is made of aluminum, aluminum-resin composite, or resin shaped material. The frame body 2 has an upper frame 21, a pair of left and right vertical frames 22, and a lower frame 23.

[0015] The upper frame 21 is a long member extending in the left-right direction above the opening 101. Each vertical frame 22 is a long member extending in the up-down direction at both ends of the left-right direction of the opening 101. The lower frame 23 is a long member extending in the left-right direction below the opening 101. As shown in FIG. 2, the lower frame 23 has an exterior rail 25 extending in the left-right direction, and an interior rail 26 that is spaced apart on the interior side of the room from the exterior rail 25 and extends in the left-right direction. Note that in FIG. 2, the left vertical frame 53B of the inner shoji screen 5B and the left vertical frame 43B of the outer shoji screen 4B (both described below) are omitted from the illustration.

[0016] The outdoor rail 25 and the indoor rail 26 each extend across the entire left-right area of the bottom frame 23. The outdoor rail 25 and the indoor rail 26 each protrude upward.

[0017] The multiple shoji screens 4, 5 include a first outer shoji screen 4A and a second outer shoji screen 4B, each of which is arranged on the outdoor rail 25, and a first inner shoji screen 5A and a second inner shoji screen 5B, each of which is arranged on the indoor rail 26. The first inner shoji screen 5A is arranged to the left of the second inner shoji screen 5B. The first outer shoji screen 4A is arranged to the left of the second outer shoji screen 4B.

[0018] The first outer shoji 4A and the second outer shoji 4B are sometimes collectively referred to as the "outer shoji 4." The first inner shoji 5A and the second inner shoji 5B are sometimes collectively referred to as the "inner shoji 5." Furthermore, the symbol for each component of the first outer shoji 4A is suffixed with A, and the symbol for each component of the second outer shoji 4B is suffixed with B. The symbol for each component of the first inner shoji 5A is suffixed with A, and the symbol for each component of the second inner shoji 5B is suffixed with B.

[0019] The outer shoji screen 4 has a frame body 41 and a face material 49.

[0020] The frame 41 is a component that forms the outer edge of the outer shoji screen 4. The frame 41 is formed in a rectangular frame shape. The frame 41 is made of aluminum, aluminum-resin composite, or resin shaped material. The frame 41 has an upper frame 42, a left vertical frame 43, a right vertical frame 44, and a lower frame 45.

[0021] The upper frame 42 is a long member extending in the left-right direction that forms the upper edge of the outer shoji screen 4. The left vertical frame 43 is a long member extending in the up-down direction that forms the left edge of the outer shoji screen 4. The right vertical frame 44 is a long member extending in the up-down direction that forms the right edge of the outer shoji screen 4. The lower frame 45 is a long member extending in the left-right direction that forms the lower edge of the outer shoji screen 4. A pair of left and right door rollers 46 are provided on the underside of the lower frame 45 (see Figure 2). The door rollers 46 are arranged on the exterior rail 25. The door rollers 46 roll on the exterior rail 25 when the outer shoji screen 4 is moved in the left-right direction.

[0022] The face material 49 is a rectangular plate material held inside the frame 41. The face material 49 is made of, for example, glass.

[0023] Each inner shoji screen 5 has a frame 51 and a surface material 59.

[0024] The frame 51 is a component that forms the outer edge of the outer shoji screen 4. The frame 51 is formed in a rectangular frame shape. The frame 51 is made of aluminum, aluminum-resin composite, or resin shaped material. The frame 51 has an upper frame 52, a left vertical frame 53, a right vertical frame 54, and a lower frame 55.

[0025] The upper frame 52 is a long member extending in the left-right direction that forms the upper edge of the inner shoji screen 5. The left vertical frame 53 is a long member extending in the up-down direction that forms the left edge of the inner shoji screen 5. The right vertical frame 54 is a long member extending in the up-down direction that forms the right edge of the inner shoji screen 5. The lower frame 55 is a long member extending in the left-right direction that forms the lower edge of the inner shoji screen 5. A pair of left and right door rollers 56 are provided on the underside of the lower frame 55. The door rollers 56 are arranged on the interior rail 26. The door rollers 56 roll on the interior rail 26 when the inner shoji screen 5 is moved left and right.

[0026] The face material 59 is a rectangular plate material held inside the frame 51. The face material 59 is made of, for example, glass.

[0027] When the outer shoji screen 4 and the inner shoji screen 5 are closed, the right vertical frame 44A of the first outer shoji screen 4A and the left vertical frame 53A of the first inner shoji screen 5A face each other in the forward direction, and the left vertical frame 43B of the second outer shoji screen 4B and the right vertical frame 54B of the second inner shoji screen 5B face each other in the forward direction.

[0028] When the inner shoji screen 5 is in the closed state, the right vertical frame 54A of the first inner shoji screen 5A and the left vertical frame 53B of the second inner shoji screen 5B are butted together in the left-right direction. The right vertical frame 54A and the left vertical frame 53B when the inner shoji screen 5 is in the closed state are sometimes collectively referred to as the "gable portion 58." The right vertical frame 54A and the left vertical frame 53B each correspond to abutting frames.

[0029] As shown in FIG. 3, a vibration stopper 541 is attached to the underside of the right vertical frame 54A, and a vertical frame-side fin 57A extending downward is provided at the outdoor end of the vibration stopper 541. A vibration stopper 531 is attached to the underside of the left vertical frame 53B, and a vertical frame-side fin 57B extending downward is provided at the outdoor end of the vibration stopper 531. In other words, the right vertical frame 54A has a vertical frame-side fin 57A. The left vertical frame 53B has a vertical frame-side fin 57B. The bottom frames 55 each have a bottom frame-side fin 57 extending downward from the outdoor end of the bottom frame 55. The vertical frame-side fin 57A, the vertical frame-side fin 57B, and the bottom frame-side fin 57 each cover the indoor rail 26 from the outdoor side. This suppresses vibration of the inner shoji screen 5. Note that in Fig. 3, the portion of the lower frame 55 other than the lower frame side fins 57 is not shown.

[0030] The fixture 1 is provided with an inter-rail attachment 6 that is removably attached to the area of the lower frame 23 between the exterior rail 25 and the interior rail 26.

[0031] The inter-rail attachment 6 is a component that fills the space between the exterior rail 25 and the interior rail 26 and flattens the upper surface of the lower frame 23. The inter-rail attachment 6 is elongated and extends in the left-right direction. The upper surface of the inter-rail attachment 6 is flat. The inter-rail attachment 6 has an attachment main body 61 and an end part 62.

[0032] The attachment main body 61 is formed of a metal material such as aluminum. The attachment main body 61 has an elongated shape. The upper surface of the attachment main body 61 is flat. The attachment main body 61 has a U-shaped cross section. The structure of the attachment main body 61 is not particularly limited, and may be, for example, a structure having a hollow portion formed in the middle (a so-called "hollow structure").

[0033] The end part 62 is a part that is operated by fingers or the like when attaching or detaching the inter-rail attachment 6. The end part 62 is provided at the longitudinal end of the attachment main body 61, more specifically, at both ends. The end part 62 is made of, for example, resin. It is preferable that the end part 62 is made of a flame-retardant material. The end part 62 has an operating part 63.

[0034] The operating part 63 is the part that is held by the user when attaching or detaching the inter-rail attachment 6. The operating part 63 is rectangular in plan view. The operating part 63 has a flat surface on the top surface. The top surface of the attachment main body 61 and the top surface of the operating part 63 are substantially flush with each other. The operating part 63 has a hole 64 into which a finger or the like can be inserted.

[0035] The hole 64 opens upward. When attaching or detaching the inter-rail attachment 6, the user can insert a finger or the like into the hole 64 and lift up and move the inter-rail attachment 6. The hole 64 penetrates the end part 62 from the top surface of the end part 62 toward the bottom of the attachment main body 61.

[0036] The inter-rail attachment 6 includes a first inter-rail attachment 6A and a second inter-rail attachment 6B. The first inter-rail attachment 6A and the second inter-rail attachment 6B are arranged side by side in the left-right direction. The first inter-rail attachment 6A is arranged on the left side of the second inter-rail attachment 6B. The first inter-rail attachment 6A and the second inter-rail attachment 6B have the same longitudinal dimension.

[0037] Note that each component of the first inter-rail attachment 6A has an A suffix attached to the reference numeral, and each component of the second inter-rail attachment 6B has a B suffix attached to the reference numeral. Also, the attachment body 61 of the first inter-rail attachment 6A will be referred to as the "first attachment body 61A." The attachment body 61 of the second inter-rail attachment 6B will be referred to as the "second attachment body 61B." The end part 62 of the first inter-rail attachment 6A will be referred to as the "first end part 62A." The end part 62 of the second inter-rail attachment 6B will be referred to as the "second end part 62B."

[0038] In the first inter-rail attachment 6A, the end part 62 is provided at the end of the first attachment body 61A on the second inter-rail attachment 6B side (i.e., the right end). In the second inter-rail attachment 6B, the end part 62 is provided at the end of the second attachment body 61B on the first inter-rail attachment 6A side (i.e., the left end).

[0039] The fitting 1 is provided with a plurality of inner rail attachments 7 that are detachably attached to the area of the bottom frame 23 that is adjacent to the indoor side of the indoor rail 26. The inner rail attachments 7 are elongated and extend in the left-right direction, similar to the inter-rail attachments 6. It is preferable that each inter-rail attachment 6 and each inner rail attachment 7 have the same longitudinal dimension.

[0040] The first end part 62A and the second end part 62B are located near the center in the left-right direction of the lower frame 23. At least a portion of the first end part 62A and the second end part 62B and at least a portion of the joint part 58 (more specifically, at least a portion of the vertical stile-side fins 57A and the vertical stile-side fins 57B) overlap in the front direction.

[0041] The inner shoji screen 5 may be displaced toward the outside of the room due to the air pressure inside the room. If the end part 62 and the gable part 58 overlap in the forward direction, the gable part 58 displaced toward the outside of the room may press against the end part 62. However, the end part 62 has a hole 64 for inserting fingers and is relatively thin, making it difficult to give it high strength. Therefore, if the end part 62 is pressed hard by the gable part 58, it may be deformed or damaged.

[0042] Therefore, the fitting 1 is provided with a reinforcing member 8 that is arranged between the first inter-rail attachment 6A and the second inter-rail attachment 6B.

[0043] The reinforcing member 8 is formed, for example, from resin. As shown in Figures 4 and 5, the reinforcing member 8 has a reinforcing main body portion 81, a fixing portion 85, a connecting portion 82, an indoor-side convex portion 86, and an outdoor-side convex portion 87. The entire reinforcing member 8 is molded as a single unit.

[0044] The reinforcing body portion 81 is positioned opposite the gable portion 58 in the projection direction, and more specifically, is positioned so as to overlap the boundary between the first inner shoji screen 5A and the second inner shoji screen 5B in the projection direction. In other words, when the inner shoji screen 5 is closed, the reinforcing body portion 81 is positioned so as to face at least one of the right vertical frame 54A and the left vertical frame 53B in the projection direction, and more specifically, is positioned so as to face both the right vertical frame 54A and the left vertical frame 53B in the projection direction. The reinforcing body portion 81 has a substantially rectangular parallelepiped shape. The reinforcing body portion 81 is, for example, solid. Note that the reinforcing body portion 81 does not have a hole penetrating it. The reinforcing body portion 81, the first end part 62A, and the second end part 62B have their exterior ends aligned.

[0045] The connection portions 82 are portions that are connected to the inter-rail attachment 6. The connection portions 82 are provided as a pair on the left and right sides of the reinforcing main body portion 81. The connection portions 82 are provided so as to protrude from each of the left and right faces of the reinforcing main body portion 81. Each connection portion 82 is provided with a protrusion 83 that protrudes from the connection portion 82 in the forward direction.

[0046] Further, a notch 65A is provided at the right end of the first end part 62A (operating part 63). A connecting part 82 is inserted into the notch 65A. The peripheral edge of the notch 65A and the protrusion 83 are engaged. This connects the first inter-rail attachment 6A (first end part 62A) to the fixing part 85. A notch 65B is provided at the left end of the second end part 62B (operating part 63). A connecting part 82 is inserted into the notch 65B. The peripheral edge of the notch 65B and the protrusion 83 are engaged. This connects the second inter-rail attachment 6B (second end part 62B) to the fixing part 85.

[0047] The fixing portions 85 are portions that are fixed to the lower frame 23. The fixing portions 85 are provided in a pair on the left and right of the reinforcing main body portion 81. Each fixing portion 85 protrudes in the left-right direction from the lower part of the reinforcing main body portion 81. Each fixing portion 85 is U-shaped (approximately U-shaped) when viewed in the left-right direction. The upper surface of each fixing portion 85 is flat. Each fixing portion 85 has a cutout at a portion that overlaps with each connecting portion 82. Each fixing portion 85 is provided with a screw hole 85a that penetrates the fixing portion 85 in the up-down direction. A screw B is inserted into each screw hole 85a (see Figure 6). The reinforcing member 8 is fixed to the lower frame 23 by the screw B.

[0048] The first end part 62A (operating part 63) abuts against the left side surface of the reinforcing member 8 and is placed on the upper surface of the fixed part 85. The second end part 62B (operating part 63) abuts against the left side surface of the reinforcing member 8 and is placed on the upper surface of the fixed part 85. As a result, the fixed part 85 is covered by the first end part 62A and the second end part 62B and cannot be seen.

[0049] The indoor-side convex portion 86 protrudes toward the indoor side from the reinforcing main body portion 81. The indoor-side convex portion 86 has, for example, a truncated quadrangular pyramid shape that is convex toward the indoor side. When the inner shoji screen 5 is in the closed state, the indoor-side convex portion 86 faces at least a part of the vertical stile-side fins 57A and the vertical stile-side fins 57B.

[0050] It should be noted that the reinforcing member 8 does not need to be in constant contact with at least a portion of the right vertical frame 54A and the left vertical frame 53B when the inner shoji screen 5 is in the closed state. The reinforcing member 8 may be in close proximity to at least a portion of the right vertical frame 54A and the left vertical frame 53B when the inner shoji screen 5 is in the closed state. It is sufficient that the reinforcing member 8 is in contact with at least a portion of the right vertical frame 54A and the left vertical frame 53B when the inner shoji screen 5 is displaced to the outside of the room.

[0051] The outdoor protrusion 87 protrudes from the reinforcing main body 81 to the outdoor side. The outdoor protrusion 87 is connected to the lower part of the reinforcing main body 81. The outdoor protrusion 87 extends along the lower edge of the outdoor side of the reinforcing main body 81. The vertical dimension of the outdoor protrusion 87 is smaller than the vertical dimension of the reinforcing main body 81. The outdoor protrusion 87 is, for example, in the shape of a rectangular plate with a plate surface extending horizontally.

[0052] As shown in Figure 6, the exterior protrusion 87 faces at least a portion of the exterior rail 25, and more specifically, abuts against the interior surface of the exterior rail 25. The vertical dimension of the exterior protrusion 87 is smaller than the vertical dimension of the reinforcing main body 81, so that when the exterior screen 4 is moved on the exterior rail 25, contact between the exterior protrusion 87 and the bottom frame 45 of the exterior screen 4 is avoided. Furthermore, the exterior protrusion 87 does not need to be in constant abutment with the exterior rail 25. The exterior protrusion 87 may be in close proximity to at least a portion of the exterior rail 25.

[0053] The stile-side fin 57 overlaps with a portion of the first end part 62A and the second end part 62B in the projection direction. However, the stile-side fin 57 overlaps with the attachment main body 61 in the projection direction. Therefore, when the inner shoji screen 5 is displaced toward the outside of the room, the stile-side fin 57 abuts against the attachment main body 61. This prevents the stile-side fin 57 from pressing against the first end part 62A and the second end part 62B.

[0054] According to the fitting 1 of this embodiment, the following effects are achieved.

[0055] According to this embodiment, the fitting 1 is provided with a reinforcing member 8 arranged between the first inter-rail attachment 6A and the second inter-rail attachment 6B. When the first inner shoji screen 5A and the second inner shoji screen 5B are in the closed state, the reinforcing member 8 faces at least a part of the gable portion 58 (the right vertical frame 54A and the left vertical frame 53B).

[0056] According to this configuration, the reinforcing member 8 and at least a portion of the gable portion 58 face each other in the projection direction, so when the gable portion 58 is displaced toward the outside of the room, the gable portion 58 comes into contact with the reinforcing member 8 (reinforcing main body portion 81). At that time, the force that attempts to be transmitted from the gable portion 58 to the end part 62 can be received by the reinforcing member 8, so the transmission of force from the gable portion 58 to the end part 62 can be suppressed. This makes it possible to suppress deformation of the end part 62. Therefore, a fitting 1 with excellent durability can be provided.

[0057] According to this embodiment, the reinforcing member 8 is fixed to the lower frame 23 by screws B.

[0058] If the position of the reinforcing member 8 shifts toward the outside of the room when the reinforcing member 8 is pushed toward the outside of the room by the gable portion 58, it is thought that the end part 62 would be more likely to receive the force from the gable portion 58. However, with this configuration, it is possible to prevent the position of the reinforcing member 8 from shifting when the reinforcing member 8 is pushed by the gable portion 58. This allows the reinforcing member 8 to more reliably receive the force from the gable portion 58, and therefore deformation of the end part 62 can be more reliably prevented.

[0059] According to this embodiment, the reinforcing member 8 has an outdoor protrusion 87 that protrudes further toward the outdoor side than the first end part 62A and the second end part 62B, and the outdoor protrusion 87 faces at least a portion of the outdoor rail 25.

[0060] According to this configuration, when the reinforcing member 8 is pushed from the indoor side by the joint portion 58, the reinforcing member 8 abuts against the outdoor rail 25. In this case, the reinforcing member 8 is supported from the outdoor side by the outdoor rail 25. This makes it possible to prevent the reinforcing member 8 from shifting position when the reinforcing member 8 is pushed from the outdoor side by the joint portion 58.

[0061] According to this embodiment, the reinforcing member 8 has an indoor-side convex portion 86 that protrudes further toward the indoor side than the first end part 62A and the second end part 62B.

[0062] If a clearance exists between the gable portion 58 and the reinforcing member 8, the airtightness and fire-blocking performance of the fitting 1 may be reduced. However, with this configuration, the indoor-side convex portion 86 and the gable portion 58 (fin 57) can be brought close to or into contact with each other. This makes it possible to prevent a clearance from occurring between the outer screen 4 and the reinforcing member 8.

[0063] According to this embodiment, the first end part 62A and the second end part 62B have holes 64A, 64B, respectively, into which fingers can be inserted.

[0064] According to this configuration, the first inter-rail attachment 6A and the second inter-rail attachment 6B can be easily attached and detached.

[0065] On the other hand, it is considered difficult to ensure the strength of such end parts 62. However, the reinforcing member 8 can suppress deformation of such end parts 62. In fittings 1 equipped with end parts 62 for which it is difficult to ensure the strength, it is possible to preferably ensure the strength.

[0066] According to this embodiment, when the first inner shroud 5A and the second inner shroud 5B are in the closed state, the boundary between the first inner shroud 5A and the second outer shroud 4B and the reinforcing member 8 overlap when viewed from the front.

[0067] According to this configuration, the reinforcing member 8 can receive the force from the palm portion 58 in a well-balanced manner, and therefore can more suitably protect both the first end part 62A and the second end part 62B.

[0068] Although one embodiment of the fittings of the present disclosure has been described above, the fittings of the present disclosure can be modified as appropriate.

[0069] In the above embodiment, the material of the reinforcing member 8 is resin, but there is no particular limitation as long as it is possible to ensure the strength of the reinforcing member 8. The reinforcing member 8 may be made of, for example, metal.

[0070] In the above embodiment, the reinforcing main body portion 81 is formed as a solid body, but the present invention is not limited to this as long as the strength of the reinforcing member 8 can be ensured.

[0071] In the above embodiment, the reinforcing member 8 is fixed to the lower frame 23 by screws, but this is not particularly limited as long as the reinforcing member 8 can be sufficiently fixed to the lower frame 23. The reinforcing member 8 may be fixed to the lower frame 23 by, for example, engaging the reinforcing member 8 with the lower frame 23.

[0072] In the above embodiment, the inter-rail attachments 6 and the inner rail attachments 7 have the same longitudinal dimension, but the longitudinal dimensions thereof may be different from each other.

[0073] In the above embodiment, the reinforcing member 8 overlaps the boundary between the right vertical stile 54A and the left vertical stile 53B in the front direction, but this is not limited to this. The reinforcing member 8 may be positioned so as to be able to sufficiently withstand the force from the gable portion 58. Furthermore, the outdoor end positions of the reinforcing main body 81, the first end part 62A, and the second end part 62B are aligned, but this is not limited to this as long as the reinforcing member 8 can sufficiently withstand the force from the gable portion 58.

[0074] In the above embodiment, the first end part 62A and the second end part 62B partially overlap with the joint portion 58 in the front direction, but the first end part 62A and the second end part 62B and the joint portion 58 do not need to overlap with the joint portion 58 in the front direction. It is preferable that the first end part 62A and the second end part 62B and the joint portion 58 do not overlap with each other in the front direction as much as possible.

[0075] In the above embodiment, the indoor side convex portion 86 has a quadrangular pyramid shape that is convex toward the outdoor side, but the shape of the indoor side convex portion 86 is not particularly limited.

[0076] In the above embodiment, the outdoor side convex portion 87 has a rectangular plate shape with the plate surface extending in the horizontal direction, but the shape of the outdoor side convex portion 87 is not particularly limited.

[0077] [Aspect 1] a lower frame, an outdoor rail provided on the lower frame and extending in the left-right direction; an indoor rail provided on the lower frame at a distance from the outdoor rail toward the indoor side and extending in the left-right direction; a first inner shoji screen and a second inner shoji screen respectively disposed on the indoor rail; a first inter-rail attachment and a second inter-rail attachment respectively detachably attached to a region of the lower frame between the outdoor rail and the indoor rail and disposed side by side in the left-right direction; and a reinforcing member disposed between the first inter-rail attachment and the second inter-rail attachment, The first inter-rail attachment has a first end part provided at the end of the first inter-rail attachment on the side of the second inter-rail attachment, and the second inter-rail attachment has a second end part provided at the end of the second inter-rail attachment on the side of the first inter-rail attachment, the first inner shoji screen and the second inner shoji screen each have a butt frame that butts together to form a closed state, and the reinforcing member faces at least a part of the butt frame in the front direction when the first inner shoji screen and the second inner shoji screen are in the closed state. [Aspect 2] The building fixture described in aspect 1, wherein the reinforcing member is fixed to the lower frame with screws. [Aspect 3] The building fixture described in claim 1 or 2, wherein the reinforcing member has an outdoor convex portion that protrudes further outside the room than the first end part and the second end part, and the outdoor convex portion faces at least a portion of the outdoor rail. [Aspect 4] The fitting according to any one of aspects 1 to 3, wherein the reinforcing member has an interior convex portion that protrudes further toward the interior than the first end part and the second end part. [Aspect 5] The fitting according to any one of aspects 1 to 4, wherein at least one of the first end part and the second end part has a hole through which a finger can be inserted. [Aspect 6] A fitting as described in any one of aspects 1 to 5, wherein when the first inner shoji screen and the second inner shoji screen are in a closed state, the boundary between the first inner shoji screen and the second inner shoji screen and the reinforcing member overlap when viewed from the front. [Explanation of symbols]

[0078] 1: Building material, 5A: First inner shoji screen, 5B: Second inner shoji screen, 6A: First inter-rail attachment, 6B: Second inter-rail attachment, 8: Reinforcement member, 23: Lower frame, 25: Outdoor rail, 26: Indoor rail, 54A: Right vertical stile (butt stile), 53B: Left vertical stile (butt stile), 62A: First end part, 62B: Second end part, 64: Hole, 86: Indoor convex part, 87: Outdoor convex part, 100: Building, 101: Opening, B: Screw.

Claims

1. The bottom frame and An exterior rail provided on the lower frame and extending in the left-right direction; An indoor rail that is provided on the lower frame at a distance from the outdoor rail toward the indoor side and extends in the left-right direction; A first inner sash and a second inner sash are respectively arranged on the indoor rail; a first inter-rail attachment and a second inter-rail attachment that are detachably attached to a region of the lower frame between the outdoor rail and the indoor rail and are arranged side by side in the left-right direction; a reinforcing member disposed between the first inter-rail attachment and the second inter-rail attachment; Equipped with the first inter-rail attachment has a first end piece provided at an end of the first inter-rail attachment on the second inter-rail attachment side, the second inter-rail attachment has a second end piece provided at an end of the second inter-rail attachment on the first inter-rail attachment side, The first inner shoji screen and the second inner shoji screen each have a butt frame, and the butt frames are butted together to form a closed state, The reinforcing member is a fixture that faces at least a portion of the butt frame in the forward direction when the first inner sash and the second inner sash are in a closed state.

2. The fixture according to claim 1 , wherein the reinforcing member is fixed to the lower frame with screws.

3. The reinforcing member has an outdoor-side convex portion that protrudes toward the outdoor side further than the first end part and the second end part, The fixture according to claim 1 or 2, wherein the outdoor convex portion faces at least a part of the outdoor rail.

4. The fixture according to claim 1 or 2, wherein the reinforcing member has an interior convex portion that protrudes toward the interior of the room beyond the first end part and the second end part.

5. The fixture according to claim 1 or 2, wherein at least one of the first end part and the second end part has a hole through which a finger can be inserted.

6. The fixture described in claim 1 or 2, wherein when the first inner shoji screen and the second inner shoji screen are in a closed state, the boundary between the first inner shoji screen and the second inner shoji screen and the reinforcing member overlap when viewed in the forward direction.

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