Sliding sash outer door joint frame and sliding sash

Abstract

To provide a meeting stile of an outer sliding sash of a double sliding sash and a double sliding sash which are excellent in workability and capable of securing heat insulation.SOLUTION: A meeting stile 24A of an outer sliding sash 2A of a double sliding sash is the meeting stile 24A of the outer sliding sash 2A of the double sliding sash made of resin extruded profiles, and the cross-sectional shape orthogonal to the longitudinal direction of the meeting stile 24A of the outer sliding sash 2A, unlike the cross-sectional shape orthogonal to the longitudinal direction of a top rail, a lower rail, and a door head end stile of the outer sliding door 2A, is formed with first hollow H1 along an outdoor face 31 and second hollows H2, H4 along the aspect face.SELECTED DRAWING: Figure 4

Description

[Technical Field]

[0001] The present disclosure relates to a sliding sash and a sliding window frame for an outer door. [Background technology]

[0002] Conventionally, in sliding sashes, the upper frame, lower frame, door edge frame, and joint frame may be formed with the same cross-sectional shape. The following Patent Document 1 discloses a configuration in which an attachment is attached to the joint frame, and a hollow is formed between the joint frame and the attachment. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 2019-65493 Summary of the Invention [Problem to be solved by the invention]

[0004] The configuration described in Patent Document 1 has the problem that the attachment must be attached to the joining frame, which is time-consuming.

[0005] The present disclosure has been made in consideration of the above circumstances, and provides a sliding sash and an outer door frame for a sliding sash that are easy to work with and ensure thermal insulation. [Means for solving the problem]

[0006] The sliding sash door frame of one aspect of the present disclosure is a sliding sash door frame made of a resin extruded profile, and the cross-sectional shape perpendicular to the longitudinal direction of the sliding sash door frame is different from the cross-sectional shape perpendicular to the longitudinal direction of the upper frame, lower frame and door end frame of the sliding sash door frame, and a first hollow is formed along the outdoor surface, a second hollow is formed along the visible surface facing the outdoors, and a glass-side hollow is formed in which a core material is placed, and the glass-side hollow is positioned on the indoor side of the first hollow and on the glass side of the second hollow. The first hollow is formed along the plate portion located at the end of the outer door frame, and the first hollow, the second hollow, and the glass side hollow are formed in the outer door frame itself. . [Brief explanation of the drawings]

[0007] [Figure 1] Front view of the building fixture. [Figure 2] Vertical cross section of the building fixture. [Figure 3] Cross section of the building fixture. [Figure 4] Enlarged view of part A in Figure 3. [Figure 5] A perspective view of the top of the outer shoji screen joint frame seen from inside the house. [Figure 6] FIG. 6 is an exploded perspective view of FIG. 5. [Figure 7] A front view of the top of the outer shoji screen joint frame seen from inside the house. [Figure 8] An enlarged view of a key part of the cross section of the fitting of variant example 1. [Figure 9] An enlarged view of a key part of the cross section of the fixture of variant 2. DETAILED DESCRIPTION OF THE INVENTION

[0008] A sliding sash will be described below as an example of a fixture according to one embodiment with reference to the drawings. As shown in Figures 1 to 3, the sliding sash 100 is installed in an exterior wall opening Wa of the exterior wall of a building. The sliding sash 100 includes a frame 1, an outer shoji screen 2A, and an inner shoji screen 2B.

[0009] In the following description, the direction connecting the outdoor side and the indoor side is referred to as the indoor-outdoor direction. Of the view directions perpendicular to the indoor-outdoor direction, the horizontal direction is referred to as the width direction, and the vertical direction is referred to as the up-down direction.

[0010] As shown in Fig. 1, the frame body 1 is formed in a four-sided frame shape. The frame body 1 has an upper frame 11, a lower frame 12, and a pair of vertical frames 13. In this embodiment, the frame body 1 is made of resin, but it may also be made of a metal extrusion material such as an aluminum alloy, or an aluminum-resin composite (a configuration in which aluminum members and resin members are assembled).

[0011] The upper frame 11 and the lower frame 12 extend in the width direction. The vertical frame 13 extends in the up-down direction. The vertical frame 13 connects the widthwise end of the upper frame 11 to the end of the lower frame 12.

[0012] The outer shoji 2A is positioned closer to the outside than the inner shoji 2B. The outer shoji 2A and the inner shoji 2B are mounted on the frame body 1 so that they can move in the width direction. When the outer shoji 2A and the inner shoji 2B are closed, the outer shoji 2A and the inner shoji 2B block the inside of the frame body 1.

[0013] The outer shoji 2A and the inner shoji 2B are sometimes collectively referred to as shoji 2. The shoji 2 has a frame 20 and glass 29.

[0014] The frame 20 is formed in a four-sided frame shape. The frame 20 has an upper frame 21, a lower frame 22, a door end frame 23, and a joint frame 24. The upper frame 21 and the lower frame 22 extend in the width direction. The door end frame 23 and the joint frame 24 extend in the vertical direction.

[0015] The frame 20 is made of resin and is formed from a resin extruded profile. The cross-sectional shape perpendicular to the width direction (longitudinal direction) of the upper frame 21, the cross-sectional shape perpendicular to the width direction (longitudinal direction) of the lower frame 22, and the cross-sectional shape perpendicular to the up-down direction (longitudinal direction) of the door end frame 23 are the same. The cross-sectional shape perpendicular to the up-down direction (longitudinal direction) of the door joint frame 24 is different from the cross-sectional shapes of the upper frame 21, the lower frame 22, and the door end frame 23, and the door joint frame 24 is a dedicated frame.

[0016] The end faces of the upper frame 21, lower frame 22, end frame 23, and joint frame 24 are each cut at 45° to the axial direction (length direction). The end frame 23 and joint frame 24 connect the widthwise end of the upper frame 21 and the widthwise end of the lower frame 22. The glass 29 is housed within the frame body 20.

[0017] The following describes the door frame 24 of the outer door 2A (hereinafter simply referred to as the "outer door frame 24A"). As shown in Figure 4, the outer door frame 24A has a first outer plate portion (the surface facing the outdoors) 31, an inner plate portion 32, a first connecting plate portion (the visible surface facing the outdoors) 33, a second connecting plate portion 34, a second outer plate portion 35, and a third connecting plate portion 36. In describing the outer door frame 24A and the door frame 24 of the inner door 2B (hereinafter simply referred to as the "inner door frame 24B") described below, the side closest to the glass 29 in the width direction is referred to as the glass side, and the opposite side (the side away from the glass 29) is referred to as the tail side.

[0018] The first outer plate portion 31 is disposed on the outdoor side of the glass 29. The first outer plate portion 31 is formed in a plate shape. The plate surface of the first outer plate portion 31 faces the indoor / outdoor direction. The first outer plate portion 31 is located on the outdoor side of the outer joint frame 24A.

[0019] The inner plate portion 32 is positioned on the indoor side of the glass 29. The inner plate portion 32 is formed in a plate shape. The plate surface of the inner plate portion 32 faces the indoor / outdoor direction. The inner plate portion 32 is located on the indoor side of the outer joint frame 24A.

[0020] The first connecting plate portion 33 connects the end portion of the first outer plate portion 31 on the door trailing edge side and the end portion of the inner plate portion 32 on the door trailing edge side. The first connecting plate portion 33 is formed in a plate shape. The plate surface of the first connecting plate portion 33 faces the width direction. The first connecting plate portion 33 is located closest to the door trailing edge side of the outer joint frame 24A.

[0021] The second connecting plate portion 34 connects the widthwise middle of the first outer plate portion 31 and the widthwise middle of the inner plate portion 32 .

[0022] The second connecting plate 34 is provided with a flange locking wall 340 that extends toward the glass side. An insertion groove 341 that is recessed toward the door tail side is formed by the glass-side end of the inner plate 32, the second connecting plate 34, and the flange locking wall 340. An attachment portion 343 of a flange 342 is inserted into and locked into the insertion groove 341.

[0023] The second outer plate portion 35 is disposed on the indoor side of the first outer plate portion 31 and faces the first outer plate portion 31. The glass-side end of the second outer plate portion 35 is connected to the second connecting plate portion 34. The door trailing edge-side end of the second outer plate portion 35 is connected to the first connecting plate portion 33. The second outer plate portion 35 is formed in a plate shape. The plate surface of the second outer plate portion 35 faces the indoor / outdoor direction.

[0024] The first outer plate portion 31, the first connecting plate portion 33, the second outer plate portion 35, and the second connecting plate portion 34 form an outdoor hollow (first hollow) H1. The outdoor hollow H1 is formed along the first outer plate portion 31 located on the most outdoor side of the outer joint frame 24A and the first connecting plate portion 33 located on the most trailing edge side of the outer joint frame 24A. The horizontal cross section of the outdoor hollow H1 is a rectangle that is long in the width direction. The outdoor hollow H1 is formed over approximately the entire length of the outer joint frame 24A in the vertical direction.

[0025] The third connecting plate portion 36 is disposed closer to the glass than the first connecting plate portion 33 and opposite the first connecting plate portion 33. The outdoor end of the third connecting plate portion 36 is connected to the second outer plate portion 35. The indoor end of the third connecting plate portion 36 is connected to the inner plate portion 32. The third connecting plate portion 36 is formed in a plate shape. The plate surface of the third connecting plate portion 36 faces the width direction.

[0026] The trailing edge side hollow H2 (second hollow) is formed by the second outer plate portion 35, the first connecting plate portion 33, the inner plate portion 32, and the third connecting plate portion 36. The trailing edge side hollow H2 is formed along the first connecting plate portion 33 located closest to the trailing edge of the outer joint frame 24A. The trailing edge side hollow H2 is located closer to the interior side than the outdoor side hollow H1. The horizontal cross section of the trailing edge side hollow H2 is a rectangle that is long in the indoor / outdoor direction. The trailing edge side hollow H2 is formed over approximately the entire length of the outer joint frame 24A in the vertical direction.

[0027] The second outer plate portion 35, the third connecting plate portion 36, the inner plate portion 32, and the second connecting plate portion 34 form a glass-side hollow H3. The horizontal cross section of the glass-side hollow H3 is approximately rectangular. The glass-side hollow H3 is positioned closer to the interior than the outdoor-side hollow H1 and closer to the glass than the trailing edge hollow H2. The horizontal cross section of the glass-side hollow H3 is approximately rectangular. The glass-side hollow H3 is formed over approximately the entire length of the outer joint frame 24A in the vertical direction. A approximately rectangular core material 39 is positioned inside the glass-side hollow H3.

[0028] A protrusion 32a is provided at the end of the inner plate 32 on the door trailing edge side. The protrusion 32a has extensions 321, 322 and a support plate 323. The protrusion 32a extends in the vertical direction. As shown in FIG. 6, an upper end 32c of the protrusion 32a is located below an upper end 32u of the inner plate 32. A lower end (not shown) of the protrusion 32a is located above a lower end (not shown) of the inner plate 32. An airtight material unit 5, which will be described later, is attached to the upper end 32u and lower end of the protrusion 32a.

[0029] As shown in Fig. 4, the extension portion 321 extends indoors from the trailing edge of the inner plate portion 32. The extension portion 321 is arranged on the same plane as the inner plate portion 32 in the indoor-outdoor direction. The extension portion 322 extends indoors from near the trailing edge of the inner plate portion 32. The extension portions 321, 322 are arranged opposite each other in the width direction. The indoor edge of the extension portion 321 and the indoor edge of the extension portion 322 are connected by a support plate portion 323.

[0030] The inner plate portion 32, the extension portion 321, the support plate portion 323, and the extension portion 322 form a trailing edge side hollow (second hollow) H4. The trailing edge side hollow H4 is formed along the extension portion 321 located closest to the trailing edge of the outer joint frame 24A. The horizontal cross section of the trailing edge side hollow H4 is approximately rectangular. The trailing edge side hollow H4 is positioned closer to the interior than the trailing edge side hollow H2. The trailing edge side hollow H4 is formed over approximately the entire length of the protrusion 32a in the vertical direction.

[0031] The outdoor side hollow H1, the trailing edge side hollow H2 and the trailing edge side hollow H4 are arranged in a row from the outdoor side to the indoor side along the visible surface of the outer joint frame 24A facing the outdoors.

[0032] A mohair engaging wall 324 extending toward the extending portion 322 is provided at the indoor end of the extending portion 321. A mohair engaging wall 325 extending toward the extending portion 321 is provided at the indoor end of the extending portion 322. The end of the mohair engaging wall 324 and the end of the mohair engaging wall 325 are arranged facing each other with a gap between them. A mohair mounting groove 326 is formed by the support plate 323 and the mohair engaging walls 324, 325.

[0033] The mohair 37 is an airtight material that seals the gap between the outer joint frame 24A and the inner joint frame 24B. The mohair 37 has a mohair base portion 37a and a mohair main body portion 37b.

[0034] The mohair base portion 37a is arranged along the support plate portion 323, and its movement toward the indoor side is restricted by the mohair engaging walls 324, 325. The mohair main portion 37b is composed of multiple rows of fibers. Each fiber of the mohair main portion 37b extends from the mohair base portion 37a toward the indoor side and passes through the gap between the end of the mohair engaging wall portion 324 and the end of the mohair engaging wall portion 325. When the outer and inner joining frames 24A, 24B are closed, the tip of each fiber of the mohair main portion 37b abuts against or is arranged with a small gap between it and the outer plate portion 42 of the inner joining frame 24B, which will be described later.

[0035] At the indoor end of the extension 322, a smoke deflector 328 is provided that extends toward the glass side.

[0036] The inner joint frame 24B will now be described. In the configuration of the inner joint frame 24B, the same components as those of the outer joint frame 24A will be assigned the same reference numerals and will not be described.

[0037] The inner joint frame 24B has a first inner plate portion 41, an outer plate portion 42, a first connecting plate portion (the visible surface facing the interior) 43, a second connecting plate portion 44, and a second inner plate portion 45.

[0038] The first inner plate portion 41 is positioned on the indoor side of the glass 29 of the inner shoji screen 2B. The first inner plate portion 41 is formed in a plate shape. The plate surface of the first inner plate portion 41 faces the indoor / outdoor direction. The first inner plate portion 41 is located on the indoor side of the inner joint frame 24B.

[0039] The outer plate portion 42 is disposed on the outdoor side of the glass 29. The outer plate portion 42 is formed in a plate shape. The plate surface of the outer plate portion 42 faces the indoor / outdoor direction. The outer plate portion 42 is located on the outdoor side of the inner joint frame 24B.

[0040] The first connecting plate portion 43 connects the end portion of the first inner plate portion 41 on the door trailing edge side and the end portion of the outer plate portion 42 on the door trailing edge side. The first connecting plate portion 43 is formed in a plate shape. The plate surface of the first connecting plate portion 43 faces the width direction. The first connecting plate portion 43 is located closest to the door trailing edge side of the inner joint frame 24B.

[0041] The second connecting plate portion 44 connects the middle of the first inner plate portion 41 in the width direction to the middle of the outer plate portion 42 in the width direction.

[0042] The second connecting plate 44 is provided with a flange locking wall 340 that extends toward the glass side. An insertion groove 341 that is recessed toward the door tail side is formed by the glass-side end of the first inner plate 41, the second connecting plate 44, and the flange locking wall 340. An attachment portion 343 of a flange 342 is inserted into and locked into the insertion groove 341.

[0043] The second inner plate portion 45 is disposed on the outdoor side of the first inner plate portion 41 and faces the first inner plate portion 41. The glass-side end of the second inner plate portion 45 is connected to the second connecting plate portion 44. The door trailing edge-side end of the second inner plate portion 45 is connected to the first connecting plate portion 43. The second inner plate portion 45 is formed in a plate shape. The plate surface of the second inner plate portion 45 faces the indoor / outdoor direction.

[0044] The first inner plate portion 41, the first connecting plate portion 43, the second inner plate portion 45, and the second connecting plate portion 44 form an indoor hollow (fourth hollow) H11. The indoor hollow H11 is formed along the first inner plate portion 41 located closest to the indoor side of the inner joint frame 24B and the first connecting plate portion 43 located closest to the tail end of the inner joint frame 24B. The horizontal cross section of the indoor hollow H11 has a rectangular shape that is long in the width direction. The indoor hollow H11 is formed over substantially the entire length of the inner joint frame 24B in the vertical direction.

[0045] The second inner plate portion 45, the first connecting plate portion 43, the outer plate portion 42, and the second connecting plate portion 44 form a tail-end side hollow (third hollow) H12. The tail-end side hollow H12 is formed along the first connecting plate portion 43 located closest to the tail end of the inner joint frame 24B. The tail-end side hollow H12 is located closer to the exterior than the indoor side hollow H11. The horizontal cross section of the tail-end side hollow H12 is approximately rectangular. The tail-end side hollow H12 is formed over approximately the entire length of the inner joint frame 24B in the vertical direction. A core material 49 is arranged inside the tail-end side hollow H12.

[0046] A protrusion 32a is provided at the end of the outer plate 42 on the tail side. The protrusion 32a is arranged in a direction that is the inverse of the protrusion 32a provided on the outer joint frame 24A in the width direction and the indoor / outdoor direction. The outer plate 42, extension 321, support plate 323, and extension 322 form a tail side hollow (third hollow) H4. The tail side hollow H4 is formed along the first connecting plate 43 located closest to the tail side of the inner joint frame 24B. The tips of the fibers of the mohair body 37b of the mohair 37 attached to the mohair attachment groove 326 of the protrusion 32a abut against or are arranged with a slight gap between them.

[0047] The indoor side hollow H11, the trailing edge hollow H12 and the trailing edge hollow H4 are arranged in a row from the indoor side toward the outdoor side along the visible surface of the inner joint frame 24B facing the indoors.

[0048] A smoke deflector 421 is provided in the middle of the width of the outer plate portion 42. The smoke deflector 421 extends from the outer plate portion 42 to the exterior side, with its tip extending toward the glass side. The tip of the smoke deflector 421 is positioned opposite the tip of the smoke deflector 328, and closer to the exterior than the tip of the smoke deflector 328 of the outer joint frame 24A.

[0049] The airtight material units 5 attached to the upper and lower ends of the protrusion 32a will be described. The airtight material units 5 attached to the upper end 32c of the protrusion 32a of the outer joint frame 24A shown in Figure 5 will be used as an example. The upper end 32c of the protrusion 32a of the outer joint frame 24A is cut at an angle of 45° to the vertical direction. The upper end 32c of the protrusion 32a of the outer joint frame 24A is positioned lower than the upper end 32u of the inner plate portion 32.

[0050] The airtight material unit 5 has a support body 51 and fin portions 56 and 57. The support body 51 has a side wall portion 52, an insertion portion 53, an upper wall portion 54, and a front wall portion 55.

[0051] The side wall portion 52 is arranged to cover the surface 33a of the first connecting plate portion 33 of the outer joint frame 24A facing the door trailing edge from the door trailing edge side. The side wall portion 52 is formed with an insertion portion 53 as a recess that is recessed toward the glass side. As shown in Figure 6, the upper end portion of the first connecting plate portion 33 is formed with a notch 331 that is recessed downward. An engagement portion (not shown) provided on the insertion portion 53 is engaged with the notch 331 of the first connecting plate portion 33.

[0052] The upper wall portion 54 extends from the upper end of the side wall portion 52 toward the glass. The upper wall portion 54 is arranged along a substantially horizontal plane. The upper surface 54u of the upper wall portion 54 is located on the same plane as the upper surface 21u of the upper frame 21. The upper wall portion 54 has a first upper wall portion 541 and a second upper wall portion 542. When viewed from above, the first upper wall portion 541 is arranged closer to the end of the door than the upper surface 21u of the upper frame 21. The second upper wall portion 542 extends from the indoor end of the first upper wall portion 541 toward the glass. When viewed from above, the second upper wall portion 542 is arranged closer to the indoor side than the upper surface 21u of the upper frame 21.

[0053] The front wall portion 55 is connected to the indoor end of the side wall portion 52 and the indoor end of the second upper wall portion 542 of the upper wall portion 54. The front wall portion 55 is arranged so as to cover the indoor-facing surface 32b of the inner panel portion 32 of the outer joint frame 24A by a predetermined distance from the door tail side.

[0054] The fin portions 56, 57 are provided so as to protrude from the front wall portion 55 toward the indoor side. The fin portions 56, 57 are arranged spaced apart in the width direction. The fin portions 56, 57 are formed in a plate shape. The plate surfaces of the fin portions 56, 57 face the width direction. For example, the fin portions 56, 57 are formed from a resin such as synthetic rubber.

[0055] 7, fin portion 56 is disposed closer to the glass than fin portion 57. An upper end portion 56u of fin portion 56 and an upper end portion 57u of fin portion 57 are located at the same height as the upper surface of upper wall portion 54.

[0056] The lower end 57d of the fin portion 57 reaches a lower position than the lower end 56d of the fin portion 56. The lower end 56d of the fin portion 56 abuts against the upper end 37u of the mohair 37 of the outer joining frame 24A or is slightly inserted downward from the upper end 37u of the mohair 37 into the fibers of the mohair main body 37b. The lower end 57d of the fin portion 57 is inserted downward from the upper end 37u of the mohair 37 of the outer joining frame 24A into the fibers of the mohair main body 37b. The lower end 57d of the fin portion 57 may be in a position where it abuts against the upper end 37u of the mohair 37. Since the mohair main body 37b and fin portions 56, 57, which are airtight materials, are continuous in the vertical direction, airtightness between the outer joint frame 24A and the inner joint frame 24B is ensured over the entire vertical length of the outer joint frame 24A and the inner joint frame 24B.

[0057] The airtight material unit 5 provided on the upper end 32c of the protruding portion 32a of the outer joint frame 24A is provided in an upside-down orientation at the lower end of the protruding portion 32a of the outer joint frame 24A. The airtight material unit 5 provided on the outer joint frame 24A is provided on the inner joint frame 24B in an upside-down orientation toward the indoor / outdoor direction.

[0058] In the outer sash 2A of the sliding sash 100 configured in this manner, the outdoor-side hollow H1 is formed along the first outer plate portion 31 located closest to the outside of the outer sash frame 24A, and along the first connecting plate portion 33 located closest to the trailing edge of the outer sash frame 24A. The trailing edge hollow H2 and trailing edge hollow H4 are formed along the first connecting plate portion 33 located closest to the trailing edge of the outer sash frame 24A. The outdoor-side hollow H1, trailing edge hollow H2, and trailing edge hollow H4 are formed in the outer sash frame 24A itself. This allows the hollows to be formed without using attachments, eliminating the need to attach attachments to the outer sash frame 24A and making the hollows easier to form.

[0059] In the inner shoji screen 2B of the sliding sash 100, the indoor side hollow H11, the tail-end side hollow H12, and the tail-end side hollow H4 are formed along the first connecting plate portion 43 located closest to the tail end of the inner joint frame 24B. The indoor side hollow H11, the tail-end side hollow H12, and the tail-end side hollow H4 are formed in the inner joint frame 24B itself. This allows the hollows to be formed without using an attachment, eliminating the need to attach an attachment to the inner joint frame 24B and making it easier to form the hollows.

[0060] (Variation 1) A sliding sash according to Modification 1 of the embodiment described above will be described mainly with reference to Figure 8. In the description of the modification shown below, the same members as those described above will be given the same reference numerals, and their description will be omitted.

[0061] As shown in FIG. 8, the outer joint frame 24C has ribs 361 and 362 instead of the third connecting plate portion 36 of the outer joint frame 24A. The ribs 361 and 362 are arranged on the glass side of the first connecting plate portion 33 and opposite the first connecting plate portion 33. The ribs 361 and 362 are formed in a plate shape. The plate surfaces of the ribs 361 and 362 face the width direction. The rib 361 extends from the second outer plate portion 35 toward the interior side. The rib 362 extends from the inner plate portion 32 toward the exterior side. The ribs 361 and 362 increase the rigidity of the outer joint frame 24C.

[0062] A tail-end side hollow (second hollow) H5 is formed by the second outer plate portion 35, the first connecting plate portion 33, the inner plate portion 32, and the second connecting plate portion 34. The tail-end side hollow H5 is formed along the first connecting plate portion 33 located closest to the tail end of the outer joint frame 24C. The tail-end side hollow H5 is formed over substantially the entire length of the outer joint frame 24C in the vertical direction.

[0063] An intermediate plate portion 311 is provided to connect the first outer plate portion 31 and the second outer plate portion 35. The intermediate plate portion 311 is disposed closer to the glass than the first connecting plate portion 33 and closer to the door end than the second connecting plate portion 34. The intermediate plate portion 311 is formed in a plate shape. The plate surface of the intermediate plate portion 311 faces the width direction.

[0064] An outdoor hollow (first hollow) H6 is formed by the first outer plate portion 31, the intermediate plate portion 311, the second outer plate portion 35, and the second connecting plate portion 34. The outdoor hollow H6 is formed along the first outer plate portion 31 located closest to the outdoor side of the outer joint frame 24C.

[0065] A corner hollow (fifth hollow) H7 located at the corner of the outer joint frame 24C is formed by the first outer plate portion 31, the first connecting plate portion 33, the second outer plate portion 35, and the intermediate plate portion 311. The corner hollow H7 is formed along the first outer plate portion 31 located closest to the outside of the outer joint frame 24C and the first connecting plate portion 33 located closest to the tail end of the outer joint frame 24C.

[0066] In the inner joint frame 24D, an intermediate plate portion 46 is provided to connect the outer plate portion 42 and the second inner plate portion 45. The intermediate plate portion 46 is positioned closer to the glass than the first connecting plate portion 43. The intermediate plate portion 46 is formed in a plate shape. The plate surface of the intermediate plate portion 46 faces the width direction.

[0067] A tail-end-side hollow (third hollow) H13 is formed by the outer plate portion 42, the intermediate plate portion 46, the second inner plate portion 45, and the first connecting plate portion 43. The tail-end-side hollow H13 is formed along the first connecting plate portion 43 located closest to the tail end of the inner joint frame 24D.

[0068] A glass-side hollow H14 is formed by the outer plate portion 42, the second connecting plate portion 44, the second inner plate portion 45, and the intermediate plate portion 46. A core material 50 is disposed inside the glass-side hollow H14.

[0069] In the outer sash 2A of the sliding sash 100 configured in this manner, the outdoor-side hollow H6 is formed along the first outer plate portion 31 located closest to the exterior of the outer sash frame 24C. The corner hollow H7 is formed along the first outer plate portion 31 located closest to the exterior of the outer sash frame 24C, and along the first connecting plate portion 33 located closest to the trailing edge of the outer sash frame 24C. The trailing edge hollow H5 and trailing edge hollow H4 are formed along the first connecting plate portion 33 located closest to the trailing edge of the outer sash frame 24C. The outdoor-side hollow H6, corner hollow H7, trailing edge hollow H5, and trailing edge hollow H4 are formed in the outer sash frame 24C itself. This allows the hollows to be formed without using attachments, eliminating the need to attach attachments to the outer sash frame 24C and making the hollows easier to form.

[0070] In the inner shoji screen 2B of the sliding sash 100, the indoor side hollow H11, the tail-end side hollow H13, and the tail-end side hollow H4 are formed along the first connecting plate portion 43 located closest to the tail end of the inner joint frame 24D. The indoor side hollow H11, the tail-end side hollow H13, and the tail-end side hollow H4 are formed in the inner joint frame 24D itself. This allows the hollows to be formed without using an attachment, eliminating the need to attach an attachment to the inner joint frame 24D and making it easier to form the hollows.

[0071] (Variation 2) A sliding sash according to the second modification of the embodiment shown above will be described mainly with reference to FIG. As shown in Figure 9, the outer joint frame 24E has an intermediate plate portion 311 that connects the first outer plate portion 31 and the second outer plate portion 35. A third connecting plate portion 36 is provided on the glass side of the first connecting plate portion 33, facing the first connecting plate portion 33. The outer joint frame 24E has an outdoor side hollow (first hollow) H6, a corner hollow (fifth hollow) H7, a trailing edge side hollow (second hollow) H2, and a trailing edge side hollow (second hollow) H4 formed therein.

[0072] In the inner joint frame 24F, an intermediate plate portion 47 is provided to connect the second inner plate portion 45 and the first inner plate portion 41. The intermediate plate portion 47 is positioned closer to the glass than the first connecting plate portion 43 and closer to the door tail than the second connecting plate portion 44. The intermediate plate portion 47 is formed in a plate shape. The plate surface of the intermediate plate portion 47 faces the width direction.

[0073] An indoor hollow (fourth hollow) H15 is formed by the second inner plate portion 45, the second connecting plate portion 44, the first inner plate portion 41, and the intermediate plate portion 47. The indoor hollow H15 is formed along the first inner plate portion 41 located closest to the indoor side of the inner joint frame 24F.

[0074] A corner hollow (sixth hollow) H16 located at the corner of the inner joint frame 24F is formed by the second inner plate portion 45, the intermediate plate portion 47, the first inner plate portion 41, and the first connecting plate portion 43. The corner hollow H16 is formed along the first inner plate portion 41 located closest to the interior side of the inner joint frame 24F and the first connecting plate portion 43 located closest to the tail end of the inner joint frame 24F.

[0075] In the outer screen 2A of the sliding sash 100 configured in this manner, the outdoor-side hollow H6 is formed along the first outer plate portion 31 located closest to the exterior of the outer sash frame 24C. The corner hollow H7 is formed along the first outer plate portion 31 located closest to the exterior of the outer sash frame 24C, and along the first connecting plate portion 33 located closest to the trailing edge of the outer sash frame 24C. The trailing edge hollow H2 and trailing edge hollow H4 are formed along the first connecting plate portion 33 located closest to the trailing edge of the outer sash frame 24E. The outdoor-side hollow H6, corner hollow H7, trailing edge hollow H2, and trailing edge hollow H4 are formed in the outer sash frame 24E itself. This allows the hollows to be formed without using attachments, eliminating the need to attach attachments to the outer sash frame 24E and allowing for easy formation of the hollows.

[0076] In the inner shoji screen 2B of the sliding sash 100, the indoor-side hollow H15 is formed along the first inner plate portion 41 located on the indoor side of the inner joint frame 24F. The corner hollow H16 is formed along the first inner plate portion 41 located on the indoor side of the inner joint frame 24F, and along the first connecting plate portion 43 located on the rear-end side of the inner joint frame 24F. The rear-end side hollow H13 and rear-end side hollow H4 are formed along the first connecting plate portion 43 located on the rear-end side of the inner joint frame 24F. The indoor-side hollow H15, corner hollow H16, rear-end side hollow H13, and rear-end side hollow H4 are formed in the inner joint frame 24F itself. This allows the hollows to be formed without using an attachment, eliminating the need to attach an attachment to the inner joint frame 24F and making the hollows easier to form.

[0077] The shapes and combinations of the components shown in the above-described embodiments are merely examples, and various modifications can be made based on design requirements, etc., within the scope of the present disclosure.

[0078] For example, in the embodiment, the indoor side hollow H11, the trailing edge hollow H12, and the trailing edge hollow H4 are formed along the first connecting plate portion 43 of the inner joint frame 24B of the inner shoji screen 2B, but the present invention is not limited to this. Hollows do not have to be formed along the visible surface of the inner shoji screen facing the interior of the room. [Explanation of symbols]

[0079] 2...Shoji screen, 2A...Outer shoji screen, 2B...Inner shoji screen, 21...Upper frame, 22...Lower frame, 23...Door frame, 24...Sash frame, 24A, 24C...Outer shoji frame (sash frame for outer shoji screen), 24B, 24D...Inner shoji frame (sash frame for inner shoji screen) 31...First outer panel portion (outdoor surface), 33...First connecting panel portion (outdoor facing surface), 43...First connecting panel portion (indoor facing surface), H1...Outdoor side hollow (first hollow), H2...Door end side hollow (second hollow), H4...Door end side hollow (second hollow, third hollow), H5...Door end side hollow (second hollow), H6...Outdoor side hollow (first hollow), H7...Corner hollow (fifth hollow), H11...Indoor side hollow (fourth hollow), H12...Door end side hollow (third hollow), H13...Door end side hollow (third hollow), H15...Indoor side hollow (fourth hollow), H16...Corner hollow (sixth hollow)

Claims

1. A sliding sash outer door frame made of resin extrusion material. The cross-sectional shape perpendicular to the longitudinal direction of the outer door frame is different from the cross-sectional shapes perpendicular to the longitudinal direction of the upper frame, lower frame and door frame of the outer door frame. The first hollow is formed along the outdoor side, A second hollow is formed along the exterior facing side. A hollow space is formed on the glass side where the core material is placed. the glass-side hollow is disposed closer to the interior than the first hollow and closer to the glass than the second hollow, The first hollow is formed along the board portion located closest to the end of the outer door frame. The first hollow, the second hollow and the glass side hollow are formed in the outer screen door frame of a sliding sash.

2. An outer sash having the outer sash joint frame of the sliding sash according to claim 1; Equipped with an inner shoji screen, The inner sliding door frame is made of extruded plastic material, and a third hollow is formed along the visible surface facing the interior of the house.

3. 3. A sliding sash according to claim 2, wherein the inner shoji door has a fourth hollow formed along the indoor surface of the door frame.

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