JP7745348B2 - Sliding sash outer door joint frame and sliding sash - Google Patents

Description

This disclosure relates to the sash frame of an outer sliding door and to a sliding sash.

Traditionally, in sliding sash shoji screens, the upper frame, lower frame, door edge frame, and joint frame have sometimes been formed with the same cross-sectional shape. Patent Document 1 below discloses a configuration in which an attachment is attached to the joint frame, creating a hollow space between the joint frame and the attachment.

JP 2019-65493 A

The configuration described in Patent Document 1 requires the attachment to be attached to the joiner frame, which is a time-consuming task.

This disclosure was made in consideration of the above circumstances, and provides a sliding sash and a sliding door frame for an outer sliding door that are easy to work with and ensure thermal insulation.

The joint frame of the outer screen of a sliding sash according to one aspect of the present disclosure is a joint frame of the outer screen of a sliding sash made of extruded resin material, and the cross-sectional shape perpendicular to the longitudinal direction of the joint frame of the outer screen is different from the cross-sectional shape perpendicular to the longitudinal direction of the upper frame, lower frame and door end frame of the outer screen, 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 in which a core material is placed is formed, and the glass-side hollow is positioned on the indoor side of the first hollow and on the glass side of the second hollow, and the first hollow is formed along the plate portion located closest to the door end of the joint frame of the outer screen, and the first hollow, the second hollow and the glass-side hollow are formed in the joint frame of the outer screen itself .

Front view of the building fixture. Vertical cross section of the building fixture. Cross section of the building fixture. FIG. 4 is an enlarged view of part A in FIG. 3 . A perspective view of the top of the outer shoji screen joint frame seen from inside the house. FIG. 6 is an exploded perspective view of FIG. 5 . A front view of the top of the outer shoji screen joint frame seen from inside the house. An enlarged view of a key part of the cross section of the fixture of variant example 1. An enlarged view of a key part of the cross section of the fixture of variant 2.

The following describes a sliding sash 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 on the exterior wall of a building. The sliding sash 100 comprises a frame 1, an outer shoji screen 2A, and an inner shoji screen 2B.

In the following description, the direction connecting the outdoor side and the indoor side will be referred to as the indoor-outdoor direction. Of the viewing directions perpendicular to the indoor-outdoor direction, the horizontal direction will be referred to as the width direction, and the vertical direction will be referred to as the up-down direction.

As shown in Figure 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 metal extrusions such as aluminum alloy, or an aluminum-resin composite (a configuration in which aluminum members and resin members are assembled).

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 .

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

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

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 edge frame 23, and a joint frame 24. The upper frame 21 and the lower frame 22 extend in the width direction. The door edge frame 23 and the joint frame 24 extend in the vertical direction.

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

The end faces of the upper frame 21, lower frame 22, door end frame 23, and joint frame 24 are each cut at a 45° angle to the axial direction (length direction). The door 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.

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

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

The inner plate portion 32 is located 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.

The first connecting plate portion 33 connects the trailing edge side end of the first outer plate portion 31 to the trailing edge side end of the inner plate portion 32. 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 trailing edge side of the outer joint frame 24A.

The second connecting plate portion 34 connects the widthwise center of the first outer plate portion 31 and the widthwise center of the inner plate portion 32.

The second connecting plate 34 is provided with a flange locking wall 340 that extends toward the glass side. The glass-side end of the inner plate 32, the second connecting plate 34, and the flange locking wall 340 form an insertion groove 341 that is recessed toward the door tail. The mounting portion 343 of the flange 342 is inserted into and locked into the insertion groove 341.

The second outer plate portion 35 is positioned indoors relative to the first outer plate portion 31, facing 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 indoors and outdoors.

The outdoor hollow (first hollow) H1 is formed by 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. The outdoor hollow H1 is formed along the first outer plate portion 31 located on the outermost side of the outer joint frame 24A and the first connecting plate portion 33 located on the outer end side of the outer joint frame 24A. The horizontal cross section of the outdoor hollow H1 is rectangular and elongated 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.

The third connecting plate portion 36 is positioned closer to the glass than the first connecting plate portion 33, facing 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.

The trailing edge 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 hollow H2 is formed along the first connecting plate portion 33, which is located closest to the trailing edge of the outer joint frame 24A. The trailing edge hollow H2 is located closer to the interior than the outdoor side hollow H1. The horizontal cross section of the trailing edge hollow H2 is rectangular and elongated in the indoor/outdoor direction. The trailing edge hollow H2 is formed over approximately the entire length of the outer joint frame 24A in the vertical direction.

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 the glass-side hollow H3. The horizontal cross section of the glass-side hollow H3 is approximately rectangular. The glass-side hollow H3 is located 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 roughly rectangular core material 39 is located inside the glass-side hollow H3.

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 and 322 and a support plate 323. The protrusion 32a extends in the vertical direction. As shown in FIG. 6, the upper end 32c of the protrusion 32a is located below the upper end 32u of the inner plate 32. The lower end (not shown) of the protrusion 32a is located above the lower end (not shown) of the inner plate 32. An airtight material unit 5, described below, is attached to the upper end 32u and lower end of the protrusion 32a.

As shown in Figure 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 end of the extension portion 321 and the indoor end of the extension portion 322 are connected by a support plate portion 323.

The inner plate portion 32, extension portion 321, support plate portion 323, and extension portion 322 form the trailing edge hollow (second hollow) H4. The trailing edge 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 hollow H4 is approximately rectangular. The trailing edge hollow H4 is positioned closer to the interior than the trailing edge hollow H2. The trailing edge hollow H4 is formed over approximately the entire length of the protrusion 32a in the vertical direction.

The outdoor-side hollow H1, trailing-end hollow H2, and trailing-end hollow H4 are arranged in a row from the outdoor side toward the indoor side along the visible surface of the exterior joint frame 24A facing the outdoors.

A mohair engagement wall 324 is provided at the indoor end of extension 321, extending toward extension 322. A mohair engagement wall 325 is provided at the indoor end of extension 322, extending toward extension 321. The ends of mohair engagement wall 324 and mohair engagement wall 325 are positioned opposite each other with a gap between them. A mohair attachment groove 326 is formed by support plate 323 and mohair engagement walls 324, 325.

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.

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 engagement walls 324 and 325. The mohair main body portion 37b is composed of multiple rows of fibers. Each fiber of the mohair main body portion 37b extends from the mohair base portion 37a toward the indoor side and passes through the gap between the end of the mohair engagement wall portion 324 and the end of the mohair engagement wall portion 325. When the outer and inner joint frames 24A and 24B are closed, the tip of each fiber of the mohair main body portion 37b abuts against or is positioned with a small gap between it and the outer plate portion 42 of the inner joint frame 24B (described below).

A smoke deflector 328 extending toward the glass side is provided at the indoor end of the extension 322.

The following describes the inner joint frame 24B. Components of the inner joint frame 24B that are similar to those of the outer joint frame 24A are given the same reference numerals and will not be described again.

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.

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

The outer plate portion 42 is located on the outdoor side of the glass 29. The outer plate portion 42 is formed in a plate shape. The 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.

The first connecting plate portion 43 connects the trailing edge side end of the first inner plate portion 41 to the trailing edge side end of the outer plate portion 42. 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 trailing edge side of the inner joint frame 24B.

The second connecting plate portion 44 connects the widthwise center of the first inner plate portion 41 and the widthwise center of the outer plate portion 42.

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

The second inner plate portion 45 is positioned facing the first inner plate portion 41 and closer to the exterior than 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.

The indoor hollow (fourth hollow) H11 is formed by 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. 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 is rectangular and elongated in the width direction. The indoor hollow H11 is formed over approximately the entire length of the inner joint frame 24B in the vertical direction.

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

A protrusion 32a is provided on the end of the outer plate 42 on the tail side. The protrusion 32a is positioned in an inverted orientation in the width direction and indoor/outdoor direction of the protrusion 32a provided on the outer joint frame 24A. A tail side hollow (third hollow) H4 is formed by the outer plate 42, extension 321, support plate 323, and extension 322. 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 positioned with a slight gap between them and the edge 342 of the outer joint frame 24A.

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 interior.

A smoke deflector 421 is provided in the middle of the width of the outer panel 42. The smoke deflector 421 extends from the outer panel 42 toward the exterior, 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, closer to the exterior than the tip of the smoke deflector 328 of the outer joint frame 24A.

The airtight material units 5 attached to the upper and lower ends of the protrusion 32a will be described. An airtight material unit 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 a 45° angle relative 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.

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.

The side wall portion 52 is positioned to cover the surface 33a facing the tail end of the first connecting plate portion 33 of the outer joint frame 24A from the tail end side. The side wall portion 52 has an insertion portion 53 formed as a recess that is recessed toward the glass side. As shown in Figure 6, the upper end of the first connecting plate portion 33 has a notch 331 that is recessed downward. A locking portion (not shown) provided on the insertion portion 53 locks into the notch 331 of the first connecting plate portion 33.

The upper wall portion 54 extends from the upper end of the side wall portion 52 toward the glass pane. 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 located 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 pane. When viewed from above, the second upper wall portion 542 is located closer to the interior than the upper surface 21u of the upper frame 21.

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 positioned 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.

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 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.

As shown in Figure 7, the fin portion 56 is positioned closer to the glass than the fin portion 57. The upper end portion 56u of the fin portion 56 and the upper end portion 57u of the fin portion 57 are located at the same height as the upper surface of the upper wall portion 54.

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 inserted slightly downward from the upper end 37u of the mohair 37 into the fibers of the mohair main body portion 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 portion 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. The airtight mohair main body 37b and fin sections 56, 57 are continuous in the vertical direction, ensuring airtightness between the outer joint frame 24A and the inner joint frame 24B over the entire vertical length of the outer joint frame 24A and the inner joint frame 24B.

The airtight material unit 5 attached to the upper end 32c of the protrusion 32a of the outer joint frame 24A is installed in an upside-down orientation at the lower end of the protrusion 32a of the outer joint frame 24A. The airtight material unit 5 attached to the outer joint frame 24A is installed in an upside-down orientation at the inner joint frame 24B.

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

In the inner shoji screen 2B of the sliding sash 100, 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 located closest to the trailing edge of the inner joint frame 24B. The indoor side hollow H11, the trailing edge hollow H12, and the trailing edge hollow H4 are formed in the inner joint frame 24B itself. This allows the hollows to be formed without using attachments, eliminating the need to attach attachments to the inner joint frame 24B and making it easier to form the hollows.

(Variation 1)
A sliding sash according to a first modified example of the embodiment described above will be described mainly with reference to Fig. 8. In the description of the following modified example, the same members as those described above will be assigned the same reference numerals, and their description will be omitted.

As shown in Figure 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 positioned closer to the glass than 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 in 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.

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

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 positioned 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.

The first outer plate portion 31, the intermediate plate portion 311, the second outer plate portion 35, and the second connecting plate portion 34 form an outdoor hollow (first hollow) H6. 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.

The first outer plate portion 31, the first connecting plate portion 33, the second outer plate portion 35, and the intermediate plate portion 311 form a corner hollow (fifth hollow) H7 located at the corner of the outer joint frame 24C. The corner hollow H7 is formed along the first outer plate portion 31 located closest to the exterior 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.

The inner joint frame 24D has an intermediate plate portion 46 that connects 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.

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

The outer plate portion 42, the second connecting plate portion 44, the second inner plate portion 45, and the intermediate plate portion 46 form the glass-side hollow H14. A core material 50 is disposed inside the glass-side hollow H14.

In the outer screen 2A of the sliding sash 100 configured in this manner, the outdoor hollow H6 is formed along the first outer plate portion 31 located closest to the exterior of the outer joint frame 24C. The corner hollow H7 is formed along the first outer plate portion 31 located closest to the exterior of the outer joint frame 24C, and along the first connecting plate portion 33 located closest to the trailing edge of the outer joint 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 joint frame 24C. The outdoor hollow H6, corner hollow H7, trailing edge hollow H5, and trailing edge hollow H4 are formed in the outer joint frame 24C itself. This allows the hollows to be formed without the use of attachments, eliminating the need to attach an attachment to the outer joint frame 24C and facilitating the formation of the hollows.

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 means that the hollows are formed without using attachments, eliminating the need to attach attachments to the inner joint frame 24D and making it easier to form the hollows.

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

The inner joint frame 24F has an intermediate plate portion 47 that connects 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.

The second inner plate portion 45, second connecting plate portion 44, first inner plate portion 41, and intermediate plate portion 47 form an indoor-side hollow (fourth hollow) H15. The indoor-side hollow H15 is formed along the first inner plate portion 41, which is located on the indoor-side furthest side of the inner joint frame 24F.

The second inner plate portion 45, intermediate plate portion 47, first inner plate portion 41, and first connecting plate portion 43 form a corner hollow (sixth hollow) H16 located at the corner of the inner joint frame 24F. The corner hollow H16 is formed along the first inner plate portion 41 located closest to the interior 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.

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

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 trailing edge of the inner joint frame 24F. The trailing edge hollow H13 and trailing edge hollow H4 are formed along the first connecting plate portion 43 located on the trailing edge of the inner joint frame 24F. The indoor side hollow H15, corner hollow H16, trailing edge hollow H13, and trailing edge hollow H4 are formed in the inner joint frame 24F itself. This allows the hollow to be formed without the use of an attachment, eliminating the need to attach an attachment to the inner joint frame 24F and facilitating the formation of the hollow.

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., without departing from the spirit of this disclosure.

For example, in the embodiment, an indoor side hollow H11, a trailing edge hollow H12, and a 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.

2...Shoji screen, 2A...Outer shoji screen, 2B...Inner shoji screen, 21...Upper frame, 22...Lower frame, 23...Door edge 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 (outdoor surface), 33...First connecting panel (outdoor-facing surface), 43...First connecting panel (indoor-facing surface), H1...Outdoor hollow (first hollow), H2...End-of-door hollow (second hollow), H4...End-of-door hollow (second hollow, third hollow), H5...End-of-door hollow (second hollow), H6...Outdoor hollow (first hollow), H7...Corner hollow (fifth hollow), H11...Indoor hollow (fourth hollow), H12...End-of-door hollow (third hollow), H13...End-of-door hollow (third hollow), H15...Indoor hollow (fourth hollow), H16...Corner hollow (sixth hollow)

Claims (3)

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. 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. A sliding sash as described in claim 2, wherein the inner shoji door joint frame has a fourth hollow formed along the interior surface.