Doors and fittings

Abstract

To provide a building component that can prevent water from entering the interior of a building due to rainwater falling into the gap between the lower frame and the shoji screen. [Solution] The lower frame 5 includes an outer sash rail 55 positioned on the outdoor side and an inner sash rail 54 positioned on the indoor side, an outer sash 4 that moves along the outer sash rail 55, and an inner sash 3 that moves along the inner sash rail 54. The outer sash 4 has a lower projection 442b that is spaced apart and faces the outer sash rail 55, and an airtight material 448 attached to the lower projection 442b that protrudes to the indoor side and contacts or is close to the outer sash rail 55.

Description

Technical Field

[0001] The present disclosure relates to fittings.

Background Art

[0002] Conventionally, in fittings having a slidable shoji such as a sliding door or a sliding window, those having a structure for preventing rainwater from entering from the outside are known. There is Patent Document 1 that discloses this type of technology. In Patent Document 1, a pressure equalizing space where the summons part space is at the same pressure as the outdoor space is provided, and even if rainwater accompanied by strong wind blows in from the gap between the lower frame and the inner shoji, it is blocked by an AT material having a height dimension that this rainwater cannot exceed. It is described that this can prevent rainwater from entering the indoor space from between the inner and outer summons frames and improve the watertight performance.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] Even with the configuration described in Patent Document 1, it is impossible to prevent water from entering through the gap between the lower frame and the shoji itself. Therefore, water that has entered through the gap between the lower frame and the shoji may accumulate inside the lower frame. When rainwater falls into the water accumulation in this state, the water shakes due to the impact of hitting the water surface of the water accumulation, and this may also cause water to enter the indoor side by hitting the airtight material arranged on the indoor side. In particular, in high-rise floors of buildings and the like, there is a risk that water may enter the indoor side together with air leakage due to strong winds on the outdoor side.

[0005] An object of the present disclosure is to provide a fitting that can prevent water from entering the indoor side due to rainwater falling into the gap between the lower frame and the shoji.

Means for Solving the Problems

[0006] To achieve the above objective, the joinery according to this disclosure comprises a lower frame having an outer sash rail positioned on the outdoor side and an inner sash rail positioned on the indoor side, an outer sash that moves along the outer sash rail, and an inner sash that moves along the inner sash rail, wherein the outer sash has a lower projection that is spaced apart and faces the outer sash rail on the outdoor side, and an airtight material attached to the lower projection that protrudes to the indoor side and contacts or is close to the outer sash rail. [Brief explanation of the drawing]

[0007] [Figure 1] This is a vertical cross-sectional view of the joinery according to the first embodiment. [Figure 2] This is a horizontal cross-sectional view of the joinery according to the first embodiment. [Figure 3] This is a front view of the interior and exterior sliding doors of the first embodiment of the building fittings, as seen from the interior side. [Figure 4] This is an enlarged view of the lower part of Figure 1. [Figure 5] This is a vertical cross-sectional view of the joinery according to the second embodiment. [Figure 6] This is a horizontal cross-sectional view of the joinery according to the second embodiment. [Figure 7] This is a front view of the interior and exterior sliding doors of the second embodiment of the building fittings, as seen from the interior side. [Figure 8] This is an enlarged view of the lower part of Figure 4. [Figure 9] This is a perspective view of the bottom frame. [Figure 10] This is a perspective view of the cover component from above. [Figure 11] This is a perspective view of the cover component from below. [Figure 12] This is a perspective view of the frames of the inner and outer shoji screens, seen from the opposite side in the left-right direction and from below. [Figure 13] This is a perspective view of the frames of the inner and outer shoji screens, seen from one side in the left-right direction and from below. [Figure 14] This is a bottom view of the frames of the inner and outer shoji screens, seen from below. [Figure 15] It is a perspective view of the frames of the inner sash and the outer sash as seen from the other side in the left - right direction and from above. [Figure 16] It is a perspective view of the frames of the inner sash and the outer sash as seen from the other side in the left - right direction and from below. [Figure 17] It is a sectional view taken along the line A - A of FIG. 7. [Figure 18] It is a side view of the inner sash and the outer sash as seen from one side in the left - right direction. [Figure 19] It is a sectional view taken along the line B - B of FIG. 7. [[ID=IS]] [Figure 20] It is a sectional view taken along the line C - C of FIG. 7. [Figure 21] It is a side view of the inner sash and the outer sash as seen from the other side in the left - right direction. [Figure 22] It is a sectional view taken along the line D - D of FIG. 7. [Figure 23] It is a sectional view taken along the line E - E of FIG. 7. [Figure 24] It is a vertical sectional view of the fitting of the third embodiment.

Mode for Carrying Out the Invention

[0008] (First Embodiment) As shown in FIGS. 1 and 2, the fitting 1 is a sliding sash provided in the opening 111 of the outer wall 11 of a building such as a building. The fitting 1 is a sash made of a metal such as aluminum. The fitting 1 has a frame body 2, an inner sash 3, and an outer sash 4. The direction connecting the inside and the outside of the room is referred to as the inside - outside direction of the room. In the drawings, the inside of the room is indicated by the reference numeral 12, and the outside of the room is indicated by the reference numeral 13. The horizontal direction orthogonal to the inside - outside direction of the room is referred to as the left - right direction. Regarding the left - right direction, when the fitting 1 is viewed from the inside of the room, the right - hand side may be referred to as one side, and the left - hand side may be referred to as the other side. Regarding the left - right direction, the central side in the left - right direction with respect to both sides in the left - right direction may be referred to as the inner side, and both sides in the left - right direction with respect to the center in the left - right direction may be referred to as the outer side. In the drawings, the left - right direction is indicated by the arrow X. In the drawings, the inside - outside direction of the room is indicated by the arrow Y.

[0009] The frame body 2 has an upper frame 21, a lower frame 5, a first vertical frame 22, and a second vertical frame 23. The first vertical frame 22 is arranged on one side in the left - right direction. The second vertical frame 23 is arranged on the other side in the left - right direction. As shown in FIGS. 1 to 3, the inner shutter 3 has a frame 31 and a glass panel 32. The frame 31 of the inner shutter 3 has an upper frame 33, a lower frame 6, a door - end frame 35, and a calling frame 36. The door - end frame 35 and the calling frame 36 are vertical frames. The outer shutter 4 has a frame 41 and a glass panel 42. The frame 41 of the outer shutter 4 has an upper frame 43, a lower frame 44, a door - end frame 45, and a calling frame 46. The door - end frame 45 and the calling frame 46 are vertical frames.

[0010] As shown in FIG. 4, the lower frame 5 has an indoor side plate portion 51, an outdoor side plate portion 52, a lower plate portion 53, an inner - shutter rail 54, an outer - shutter rail 55, an upper plate portion 56, an intermediate plate portion 57, and an inner - shutter rail lower plate portion 58. The indoor side plate portion 51 is provided along the indoor - side surface of the lower frame 5. An airtight material 511 is attached to the outdoor side of the upper end portion of the indoor side plate portion 51. A groove portion 512 for attaching the airtight material 511 is formed on the outdoor side of the upper end portion of the indoor side plate portion 51. The outdoor side plate portion 52 is provided along the outdoor - side surface of the lower frame 5. A drainage hole portion 521 penetrating in the indoor - outdoor direction is formed in the outdoor side plate portion 52. The outdoor side plate portion 52 is, for example, a screen - door rail.

[0011] The lower plate portion 53 is provided between the indoor side plate portion 51 and the outdoor side plate portion 52. The lower plate portion 53 has an indoor horizontal portion 531, an inclined portion 532, and an outdoor horizontal portion 533. The indoor horizontal portion 531 extends horizontally to the outdoors from the middle of the height direction of the indoor side plate portion 51. The inclined portion 532 extends in a direction that gradually slopes downward toward the outdoors from the outdoor end of the indoor horizontal portion 531. The inclined portion 532 has different inclination angles in each part in the indoor and outdoor directions. The outdoor horizontal portion 533 extends horizontally to the outdoors from the outdoor end of the indoor horizontal portion 531 and is connected to the middle of the height direction of the outdoor side plate portion 52. The upper side 522 of the outdoor side plate portion 52 protrudes above the outdoor horizontal portion 533. The upper side 522 of the outdoor side plate portion 52 corresponds to the rising portion in the claims. The holes 521 in the outdoor side plate portion 52 are positioned above the outdoor horizontal portion 533. The holes 521 in the outdoor side plate portion 52 correspond to the drainage holes in the claims.

[0012] The lower plate portion 58 of the inner sliding door rail extends upward from the boundary between the indoor horizontal portion 531 and the inclined portion 532 of the lower plate portion 53. The inner sliding door rail 54 extends upward from the upper end of the lower plate portion 58 of the inner sliding door rail. The inner sliding door rail 54 is located on the outdoor side of the indoor side plate portion 51. The roller 37 of the inner sliding door 3 travels left and right along the upper end of the inner sliding door rail 54. The outer sliding door rail 55 extends upward from the middle portion of the inclined portion 532 of the lower plate portion 53 in the indoor-outdoor direction. The outer sliding door rail 55 is located below the inner sliding door rail 54. The roller 47 of the outer sliding door 4 travels left and right along the upper end of the outer sliding door rail 55. The outer sliding door rail 55 has a hole 551 that penetrates in the indoor-outdoor direction.

[0013] The upper plate portion 56 is provided between the indoor side plate portion 51 and the lower plate portion 58 of the inner sliding door rail. The indoor end of the upper plate portion 56 is connected to the middle portion in the height direction of the indoor side plate portion 51. The outdoor end of the upper plate portion 56 is connected to the upper end of the lower plate portion 58 of the inner sliding door rail. The upper plate portion 56 is positioned above the indoor horizontal portion 531 of the lower plate portion 53, overlapping it with a gap in between.

[0014] The intermediate plate portion 57 protrudes outward from slightly below the upper end of the lower plate portion 58 of the inner sash rail. The intermediate plate portion 57 is positioned overlapping with the inclined portion 532 of the lower plate portion 53 and the indoor portion of the outdoor horizontal portion 533, with a gap in between. The intermediate plate portion 57 is positioned lower than the upper plate portion 56. The outdoor end of the intermediate plate portion 57 is positioned indoors and above the outer sash rail 55. An airtight seal 571 is attached to the outdoor end of the intermediate plate portion 57. A groove 572 for attaching the airtight seal 571 is formed at the outdoor end of the intermediate plate portion 57.

[0015] The lower frame 5 has a hollow lower frame portion 5a formed in it, surrounded by the indoor side plate portion 51, the lower plate portion 53, the lower plate portion 58 of the inner sash rail, and the upper plate portion 56. The lower frame 5 has an upper groove portion 5b formed in it, surrounded by the outdoor side surface of the indoor side plate portion 51, the indoor side surface of the inner sash rail 54, and the upper surface of the upper plate portion 56. The upper groove portion 5b opens upward. The lower frame 5 has a gap between rails portion 5c formed in it, surrounded by the upper surface of the lower plate portion 53, the outdoor side surface of the lower plate portion 58 of the inner sash rail, the indoor side surface of the outer sash rail 55, and the lower surface of the intermediate plate portion 57. The gap between rails portion 5c opens upward and to the outside. The lower frame 5 has an outdoor side groove portion 5e formed in it, surrounded by the outdoor side surface of the outdoor side plate portion 52, the outdoor side surface of the outer sash rail 55, and the upper surface of the lower plate portion 53.

[0016] As shown in Figure 4, the lower frame 44 of the outer sash 4 has an indoor side panel 441, an outdoor side panel 442, an upper panel 443, a lower panel 447, and a middle panel 446. The indoor side panel 441 is provided along the indoor side of the lower frame 44. The outdoor side panel 442 is provided along the outdoor side of the lower frame 44. The upper end of the indoor side panel 441 and the upper end of the outdoor side panel 442 are positioned at the same height. The lower end of the outdoor side panel 442 is positioned lower than the lower end of the indoor side panel 441. The upper panel 443, lower panel 447, and middle panel 446 are provided between the indoor side panel 441 and the outdoor side panel 442. The upper panel 443, middle panel 446, and lower panel 447 are positioned with spacing between them from top to bottom. The indoor ends of the upper plate section 443 and the middle plate section 446 are connected to the midpoint in the height direction of the indoor side plate section 441. The indoor end of the lower plate section 447 is connected to the lower end of the indoor side plate section 441. The outdoor ends of the upper plate section 443, the lower plate section 447, and the middle plate section 446 are connected to the midpoint in the height direction of the outdoor side plate section 442.

[0017] The bottom plate portion 447 is flat. The indoor end of the bottom plate portion 447 is connected to the lower end of the indoor side plate portion 441. The outdoor end of the bottom plate portion 447 is connected to the midpoint in the height direction of the outdoor side plate portion 442.

[0018] The lower part of the outdoor side plate portion 442 protrudes downward from the bottom plate portion 447. The portion of the lower part of the outdoor side plate portion 442 that protrudes downward from the bottom plate portion 447 is referred to as the lower protrusion portion 442b. The lower protrusion portion 442b is positioned opposite the outer sash rail 55 of the lower frame 5 at a distance from it. An airtight seal 448 is attached to the indoor side surface of the lower protrusion portion 442b. The airtight seal 448 is molded from an elastically deformable material such as resin. The airtight seal 448 protrudes indoors from the lower protrusion portion 442b. A groove 449 for attaching the airtight seal 448 is provided on the indoor side surface of the lower protrusion portion 442b. The airtight seal 448 has a fixing piece 448c that is attached to the groove 449 and a protruding piece 448d that protrudes indoors from the fixing piece 448c. The airtight seal 448 protrudes inward from the outdoor side plate portion 442 to a position below the door roller 47. The tip portion 448a of the airtight seal 448, that is, the tip of the protruding piece 448d, extends diagonally upward toward the indoor side.

[0019] The lower frame 44 has a glass groove 44a formed above the upper plate portion 443, surrounded by the indoor side plate portion 441, the outdoor side plate portion 442, and the upper plate portion 443. The glass groove 44a is a groove that opens upward. The lower edge of the glass panel 42 is fitted into the glass groove 44a. Glass retaining portions 441a and 442a are provided at the upper ends of the indoor side plate portion 441 and the outdoor side plate portion 442 to hold the glass panel 42 in place. The glass retaining portion 441a of the indoor side plate portion 441 extends from the upper end of the indoor side plate portion 441 toward the outdoors and then bends downward. The glass retaining portion 442a of the outdoor side plate portion 442 extends from the upper end of the outdoor side plate portion 442 toward the indoors and then bends downward. The glass retaining portion 441a of the indoor side panel 441 and the glass retaining portion 442a of the outdoor side panel 442 are positioned at the same height.

[0020] The bottom frame 44 has a void 44d formed in it, surrounded by an indoor side panel 441, an outdoor side panel 442, a middle panel 446, and a bottom panel 447. Below the void 44d, a roller member 471 is installed to support the roller 47 of the outer sliding door 4. The bottom panel 447 has roller holes 447e formed in it at intervals in the left-right direction. The roller holes 447e penetrate the bottom panel 447 in the vertical direction. The roller member 471 is positioned in the roller holes 447e. The roller member 471 is positioned above and below the bottom panel 447.

[0021] The lower frame 44 has a hollow section 44c formed in which an indoor side panel 441, an outdoor side panel 442, an upper panel 443, and an intermediate panel 446 are surrounded. The hollow section 44c is positioned below the glass groove section 44a via the upper panel 443. The hollow section 44c is positioned above the hollow section 44d via the intermediate panel 446.

[0022] The outer sash 4 is installed on the lower frame 5 as follows: The roller 47 is installed on the outer sash rail 55 of the lower frame 5. The lower side of the indoor side panel 441 of the lower frame 44 is positioned on the outdoor side of the intermediate panel 57 of the lower frame 5. The lower side of the indoor side surface of the indoor side panel 441 of the lower frame 44 is in contact with the airtight material 571 attached to the outdoor end of the intermediate panel 57 of the lower frame 5. The lower side of the outdoor side panel 442 of the lower frame 44 is positioned on the outdoor side of the outer sash rail 55 of the lower frame 5. The tip 448a of the airtight material 448 attached to the lower projection 442b of the lower frame 44 is in contact with or close to the outdoor side surface of the outer sash rail 55 above the hole 551 of the outer sash rail 55 of the lower frame 5. When the tip 448a of the airtight material 448 is in close proximity to the outdoor surface of the outer sash rail 55, for example, a small gap is formed between the tip 448a of the airtight material 448 and the outdoor surface of the outer sash rail 55. When the outer sash 4 moves left and right along the outer sash rail 55, the protruding piece of the airtight material 448 elastically deforms to maintain contact with or proximity to the indoor surface of the outer sash rail 55. The airtight material 448 is positioned above the hole 521 in the outdoor side plate portion 52 of the lower frame 5.

[0023] If rainwater enters the space between the outer sash 4 and the lower frame 5, puddles may form in the gap 5c between the rails of the lower frame 5 and in the outdoor gutter 5e. The surface of these puddles is shown in Figure 4 by the dashed line indicated by reference numeral 14. If rainwater falls further onto the water surface on the outdoor side of the outer sash 4 while puddles have formed, the energy of the fall may cause the water surface to ripple, potentially allowing water from the puddles to seep into the interior through gaps such as between the lower frame 44 of the outer sash 4 and the airtight seal 571 of the intermediate plate portion 57 of the lower frame 5. The airtight seal 448 attached to the outdoor side plate portion 442 of the lower frame 44 is in contact with or close to the outer sash rail 55 of the lower frame 5 within the puddle. As a result, the airtight seal 448 absorbs the aforementioned energy of the fall and prevents the puddle above the airtight seal 448 and on the outdoor side from rippled. As a result, it is possible to prevent water from puddles from seeping into the interior through the gap between the outer sash 4 and the lower frame 5. In other words, it is possible to prevent water from entering the interior due to rainwater falling into the gap between the lower frame 5 and the sashes 3 and 4. The airtight material 448 can suppress the intrusion of rainwater into the interior more effectively than the airtight material 448 by being in contact with or close to the outer sash rail 55. The airtight material 448 can seal the gap between the outer sash 4 and the lower frame 5 by being in contact with or close to the outer sash rail 55. This improves the sound insulation of the door 1.

[0024] As described above, the airtight material 448 is positioned above the holes 521 in the outdoor side plate portion 52 of the lower frame 5 and above the holes 551 in the outer sash rail 55. This prevents the airtight material 448 from obstructing drainage from the lower frame 5 and prevents the surface of puddles from rippling.

[0025] The airtight seal 448 may be provided only at both ends of the outdoor side plate portion 442 in the left-right direction. The left and right ends of the outdoor side plate portion 52 correspond to the ends of the outdoor side plate portion 442, i.e., the ends of the lower frame 44 on the door frame 45 side and the ends on the meeting frame 46 side. In this way, at both ends of the lower frame 44 in the left-right direction, the gap between the outdoor side plate portion 442 of the lower frame 44 and the outer sash rail 55 of the lower frame 5 is sealed by the airtight seal 448. In the middle of the lower frame 44 in the left-right direction, a gap is formed between the outdoor side plate portion 442 of the lower frame 44 and the outer sash rail 55 of the lower frame 5. As a result, at both ends of the lower frame 44 in the left-right direction, it is possible to prevent rainwater from entering the indoor side beyond the outer sash rail 55 through the gap between the outdoor side plate portion 442 of the lower frame 44 and the outer sash rail 55 of the lower frame 5. In the middle section of the lower frame 44 in the left-right direction, outside air can be introduced into the space between the lower frame 5 and the outer sash 4 or inner sash 3. This outside air enables the creation of an isobaric structure for the inner sash 3 and outer sash 4.

[0026] The airtight seal 448 may be provided along approximately the entire length of the outdoor side plate portion 442 in the left-right direction. By doing so, it is possible to prevent rainwater from entering the indoor side of the outer sash rail 55 through the gap between the outdoor side plate portion 442 of the lower frame 44 and the outer sash rail 55 of the lower frame 5 along approximately the entire length of the lower frame 44.

[0027] The lower frame 6 of the interior sliding door 3 has an indoor side panel 61, an outdoor side panel 62, an upper panel 63, and a lower panel 66. The indoor side panel 61 is provided along the indoor side of the lower frame 6. The outdoor side panel 62 is provided along the outdoor side of the lower frame 6. The upper panel 63 and the lower panel 66 are provided between the indoor side panel 61 and the outdoor side panel 62. The upper panel 63 is positioned above the lower panel 66 with a gap in between. The upper end of the indoor side panel 61 and the upper end of the outdoor side panel 62 are at the same height. The lower end of the indoor side panel 61 and the lower end of the outdoor side panel 62 are at the same height. The indoor ends of the upper panel 63 and the lower panel 66 are connected to the middle of the indoor side panel 61 in the height direction. The outdoor ends of the upper plate portion 63 and the lower plate portion 66 are connected to the intermediate portion in the height direction of the outdoor side plate portion 62.

[0028] The lower part of the outdoor side panel 62 protrudes downward from the bottom panel 66. The portion of the lower part of the outdoor side panel 62 that protrudes downward from the bottom panel 66 is referred to as the lower projection 62b. An airtight seal 623 is attached to the indoor side of the lower projection 62b. The airtight seal 623 is molded from an elastically deformable material such as resin. The airtight seal 623 protrudes indoors from the lower projection 62b. A groove 624 for attaching the airtight seal 623 is provided on the indoor side of the lower projection 62b. The airtight seal 623 protrudes indoors from the outdoor side panel 62 to a position below the door roller 37. The tip of the airtight seal 623 extends diagonally upward toward the indoor side.

[0029] The lower frame 6 has a glass groove 6a formed above the upper plate portion 63, surrounded by the indoor side plate portion 61, the outdoor side plate portion 62, and the upper plate portion 63. The glass groove 6a is a groove that opens upward. The lower edge of the glass panel 32 is fitted into the glass groove 6a. Glass retaining portions 611 and 621 for holding the glass panel 32 are provided at the upper ends of the indoor side plate portion 61 and the outdoor side plate portion 62. The glass retaining portion 611 of the indoor side plate portion 61 extends from the upper end of the indoor side plate portion 61 toward the outdoors and then bends downward. The glass retaining portion 621 of the outdoor side plate portion 62 extends from the upper end of the outdoor side plate portion 62 toward the indoors and then bends downward. The glass retaining portion 611 of the indoor side plate portion 61 and the glass retaining portion 621 of the outdoor side plate portion 62 are positioned at the same height.

[0030] In the lower frame 6, below the glass groove portion 6a, there is a void 6c surrounded by the indoor side plate portion 61, the outdoor side plate portion 62, the upper plate portion 63, and the lower plate portion 66. In the void 6c and below it, a roller member 371 that supports the roller 37 of the inner sliding door 3 is installed. In the lower plate portion 66, roller holes 66e are formed at intervals in the left-right direction. The roller holes 66e penetrate the lower plate portion 66 in the vertical direction. The roller member 371 is positioned in the roller holes 66e. The roller member 371 is positioned above and below the lower plate portion 66. The airtight material 623 protrudes inward from the outdoor side plate portion 62 to a position below the roller 37.

[0031] The inner sliding door 3 is installed on the lower frame 5 as follows: The roller 37 is installed on the inner sliding door rail 54 of the lower frame 5. The lower side of the indoor side panel 61 of the lower frame 6 is positioned on the outdoor side of the upper side of the indoor side panel 51 of the lower frame 5. The airtight seal 511 attached to the upper end of the indoor side panel 51 of the lower frame 5 is in contact with the lower side of the indoor side panel 61 of the lower frame 6. The lower side of the outdoor side panel 62 of the lower frame 6 is positioned on the outdoor side of the inner sliding door rail 54 of the lower frame 5. The tip of the airtight seal 623 attached to the lower end of the outdoor side panel 62 of the lower frame 6 is in contact with the indoor side of the inner sliding door rail 54.

[0032] As shown in Figure 1, the upper frame 21 has an indoor side panel 211, an outdoor side panel 212, an upper panel 213, a first visible panel 214, and a second visible panel 215. The indoor side panel 211 is provided along the indoor side of the upper frame 21. An airtight seal 216 is attached to the outdoor side of the lower end of the indoor side panel 211. A groove 217 for attaching the airtight seal 216 is formed on the outdoor side of the lower end of the indoor side panel 211. The upper panel 213 is provided between the indoor side panel 211 and the outdoor side panel 212. The first visible panel 214 and the second visible panel 215 extend downward from the middle of the upper panel 213 in the indoor-outdoor direction. The first visible panel 214 is positioned on the indoor side of the second visible panel 215. A sealing material 218 is attached to the lower end of the first visible plate portion 214. A groove 219 for attaching the sealing material 218 is formed on the outdoor side of the lower end of the first visible plate portion 214.

[0033] The upper frame 33 of the inner shoji screen 3 is positioned in the groove enclosed by the indoor side panel 211, the first visible panel 214, and the upper panel 213. The airtight material 216 attached to the indoor side panel 211 is in contact with the indoor side surface of the upper frame 33. The airtight material 331 attached to the outdoor side surface of the upper frame 33 is in contact with the indoor side surface of the first visible panel 214. The upper frame 43 of the outer shoji screen 4 is positioned in the groove enclosed by the first visible panel 214, the second visible panel 215, and the upper panel 213. The airtight material 218 attached to the first visible panel 214 is in contact with the indoor side surface of the upper frame 43. The airtight material 431 attached to the outdoor side surface of the upper frame 43 is in contact with the indoor side surface of the second visible panel 215.

[0034] As shown in Figure 2, the first vertical frame 22 has an indoor side panel 221, an outdoor side panel 222, an outer panel 223, a first rib 224, a second rib 225, an indoor fixing part 227, and an outdoor fixing part 228. The indoor side panel 221 is provided along the indoor side of the first vertical frame 22. The indoor fixing part 227 protrudes to the outdoors from the left-right outer end of the indoor side panel 221. The outdoor side panel 222 is provided along the outdoor side of the first vertical frame 22. The outdoor fixing part 228 protrudes to the indoor from the left-right outer end of the outdoor side panel 222. The outer panel 223 is provided along one left-right edge of the opening 111 of the outer wall 11. The indoor end of the outer panel 223 is connected to the left-right middle part of the indoor side panel 221. The outer end of the outer panel 223 is connected to the middle section of the outer side panel 222 in the left-right direction.

[0035] The first rib 224 protrudes inward in the left-right direction from the middle of the outer panel 223 in the indoor-outdoor direction. The position of the first rib 224 in the indoor-outdoor direction is approximately the same as the position of the inner sash rail 54 of the lower frame 5 in the indoor-outdoor direction. When the inner sash 3 is positioned in the closed position that closes the opening, the door frame 35 of the inner sash 3 is positioned to overlap with the first rib 224 in the left-right direction. The second rib 225 protrudes inward in the left-right direction from a position on the outdoor side of the first rib 224 in the middle of the outer panel 223 in the indoor-outdoor direction. When the inner sash 3 is positioned in the closed position that closes the opening, the door frame 35 of the inner sash 3 is positioned on the indoor side of the second rib 225. An airtight material 221a is attached to the indoor side panel 221.

[0036] As shown in Figure 2, the door frame 35 of the interior sliding door 3 has a groove bottom plate portion 351, a groove indoor side plate portion 352, a groove outdoor side plate portion 353, an indoor side plate portion 354, an outdoor side plate portion 355, an outer plate portion 356, an indoor side projection plate portion 357, and an outdoor side projection plate portion 358. The groove bottom plate portion 351 forms the bottom of the glass groove portion 35a of the door frame 35. The groove indoor side plate portion 352 forms the indoor side of the glass groove portion 35a. The groove outdoor side plate portion 353 forms the outdoor side of the glass groove portion 35a. The indoor side plate portion 354 extends from the middle of the groove bottom plate portion 351 in the indoor-outdoor direction to one side in the left-right direction. The outdoor side plate portion 355 extends to one side in the left-right direction from a position midway between the indoor and outdoor sides of the groove bottom plate portion 351, and on the outdoor side than the indoor side plate portion 354. The outer plate portion 356 is positioned on one side in the left-right direction of the indoor side plate portion 354 and the outdoor side plate portion 355, with its plate surface facing left-right. The indoor side plate portion 354 and the outdoor side plate portion 355 are connected to the midway point of the outer plate portion 356 in the indoor and outdoor directions. The indoor side protruding plate portion 357 protrudes to one side in the left-right direction from the indoor end of the outer plate portion 356. The outdoor side protruding plate portion 358 protrudes to one side in the left-right direction from the outdoor end of the outer plate portion 356.

[0037] When the inner sash 3 closes the opening, the airtight material 221a attached to the first vertical frame 22 comes into contact with the indoor surface of the indoor protruding plate portion 357. When the inner sash 3 closes the opening, the airtight material 358a attached to the outdoor protruding plate portion 358 comes into contact with the first vertical frame 22. The door frame 35 has a hollow door frame portion 35b formed in which a groove bottom plate portion 351, an indoor plate portion 354, an outdoor plate portion 355, and an outer plate portion 356 are surrounded.

[0038] The second vertical frame 23 has an indoor side panel 231, an outdoor side panel 232, an outer panel 233, a first rib 234, a second rib 235, a third rib 236, an indoor fixing part 237, and an outdoor fixing part 238. The indoor side panel 231 is provided along the indoor side of the second vertical frame 23. The indoor fixing part 237 protrudes to the outdoors from the left-right outer end of the indoor side panel 231. The outdoor side panel 232 is provided along the outdoor side of the second vertical frame 23. The outdoor fixing part 238 protrudes to the indoor from the left-right outer end of the outdoor side panel 232. The outer panel 233 is provided along the left-right edge of the opening 111 of the outer wall 11. The indoor end of the outer panel 233 is connected to the left-right middle part of the indoor side panel 231. The outer end of the outer panel 233 is connected to the middle section of the outer side panel 232 in the left-right direction.

[0039] The first rib 234 protrudes inward in the left-right direction from the middle of the outer panel 233 in the indoor-outdoor direction. When the outer sash 4 is positioned in the closed position to close the opening, the door frame 45 of the outer sash 4 is positioned on the outdoor side of the first rib 234. The second rib 235 protrudes inward in the left-right direction from a position on the outdoor side of the first rib 234 in the middle of the outer panel 233 in the indoor-outdoor direction. The position of the second rib 235 in the indoor-outdoor direction is approximately the same as the position of the outer sash rail 55 of the lower frame 5 in the indoor-outdoor direction. When the outer sash 4 is positioned in the closed position to close the opening, the door frame 45 of the outer sash 4 is positioned overlapping the second rib 235 in the left-right direction. The third rib 236 protrudes inward in the left-right direction from a position on the outdoor side of the second rib 235 in the middle of the outer panel 233 in the indoor-outdoor direction. When the outer sash 4 is positioned in the closed position that closes the opening, the door frame 45 of the outer sash 4 is positioned on the indoor side of the third rib 236. The third rib 236 can prevent rainwater from the outside from entering the room through the gap between the door frame 45 of the outer sash 4 and the second vertical frame 23. By positioning the third rib 236 on the outdoor side of the door frame 45 of the outer sash 4, the sound insulation of the door 1 can be improved. An airtight material 234a is attached to the first rib 234.

[0040] The door frame 45 of the outer sliding door 4 has a groove bottom plate portion 451, a groove indoor side plate portion 452, a groove outdoor side plate portion 453, an indoor side plate portion 454, an outdoor side plate portion 455, an outer plate portion 456, an indoor side projection plate portion 457, and an outdoor side projection plate portion 458. The groove bottom plate portion 451 forms the bottom of the glass groove portion 45a of the door frame 45. The groove indoor side plate portion 452 forms the indoor side of the glass groove portion 45a. The groove outdoor side plate portion 453 forms the outdoor side of the glass groove portion 45a. The indoor side plate portion 454 extends from the middle of the groove bottom plate portion 451 in the indoor-outdoor direction to the other side in the left-right direction. The outdoor side plate portion 455 extends to the other side in the left-right direction from a position midway between the indoor and outdoor sides of the groove bottom plate portion 451, on the outdoor side than the indoor side plate portion 454. The outer plate portion 456 is positioned on the other side in the left-right direction of the indoor side plate portion 454 and the outdoor side plate portion 455, with its plate surface facing left-right. The indoor side plate portion 454 and the outdoor side plate portion 455 are connected to the midway point of the outer plate portion 456 in the indoor and outdoor directions. The indoor side protruding plate portion 457 protrudes to the other side in the left-right direction from the indoor end of the outer plate portion 456. The outdoor side protruding plate portion 458 protrudes to the other side in the left-right direction from the outdoor end of the outer plate portion 456.

[0041] When the outer sash 4 closes the opening, the airtight material 234a attached to the first rib 234 of the second vertical frame 23 comes into contact with the indoor surface of the indoor protruding plate portion 457. When the outer sash 4 closes the opening, the airtight material 458a attached to the outdoor protruding plate portion 458 comes into contact with the outer plate portion 233 of the second vertical frame 23. The door frame 45 has a hollow door frame portion 45b formed in which a groove bottom plate portion 451, an indoor plate portion 454, an outdoor plate portion 455, and an outer plate portion 456 are surrounded.

[0042] The meeting frame 36 of the interior sliding door 3 has a groove bottom plate portion 361, a groove indoor side plate portion 362, a groove outdoor side plate portion 363, an indoor side plate portion 364, an outdoor side plate portion 365, an outer plate portion 366, a smoke return portion 367, and an indoor projection portion 368. The groove bottom plate portion 361 forms the bottom of the glass groove portion 36a of the meeting frame 36. The groove indoor side plate portion 362 forms the indoor side of the glass groove portion 36a. The groove outdoor side plate portion 363 forms the outdoor side of the glass groove portion 36a. The indoor side plate portion 364 extends from the indoor-outdoor end of the groove bottom plate portion 361 to the other side in the left-right direction. The outdoor side plate portion 365 extends from the indoor-outdoor end of the groove bottom plate portion 351 to the other side in the left-right direction. The outer panel 366 is positioned between the indoor panel 364 and the outdoor panel 365. The indoor end of the outer panel 366 is connected to the other end of the indoor panel 364 in the left-right direction. The other end of the outdoor panel 365 in the left-right direction is connected to the outer panel 366. The outdoor end of the outer panel 366 protrudes further outward than the outer panel 366. An airtight seal 365a is attached to the outdoor side of the other end of the outdoor panel 365 in the left-right direction. It is connected to the other end of the outdoor panel 365 in the left-right direction. The smoke baffle 367 is connected to the outdoor panel 365. The indoor projection 368 is provided on the indoor side of the grooved indoor panel 362 and indoor panel 364.

[0043] The meeting stile 36 has a hollow meeting stile portion 36b surrounded by a groove bottom plate portion 361, an indoor side plate portion 364, an outdoor side plate portion 365, and an outer plate portion 366. The meeting stile 36 also has a hollow stile portion 36c surrounded by a groove indoor side plate portion 362, an indoor side plate portion 364, and an indoor projection portion 368.

[0044] As shown in Figure 2, the meeting stile 46 of the outer sash 4 has a groove bottom plate portion 461, a groove indoor side plate portion 462, a groove outdoor side plate portion 463, an indoor side plate portion 464, an outdoor side plate portion 465, an outer plate portion 466, and a smoke return portion 467. The groove bottom plate portion 461 forms the bottom of the glass groove portion 46a of the meeting stile 46. The groove indoor side plate portion 462 forms the indoor side of the glass groove portion 46a. When the inner sash 3 and the outer sash 4 close the opening and the meeting stile 36 of the inner sash 3 and the meeting stile 46 of the outer sash 4 overlap in the indoor-outdoor direction, the airtight material 365a attached to the outdoor side plate portion 365 of the meeting stile 36 of the inner sash 3 comes into contact with the indoor side surface of the groove indoor side plate portion 462 of the meeting stile 46 of the outer sash 4. The outdoor groove side plate portion 463 forms the outdoor side of the glass groove portion 46a. The indoor side plate portion 464 extends from the indoor-outdoor end of the groove bottom plate portion 461 to one side in the left-right direction. The outdoor side plate portion 465 extends from the indoor-outdoor end of the groove bottom plate portion 451 to one side in the left-right direction. The outer plate portion 466 is positioned between the indoor side plate portion 464 and the outdoor side plate portion 465. The indoor end of the outer plate portion 466 is connected to one side of the indoor side plate portion 464 in the left-right direction. The outdoor end of the outer plate portion 466 is connected to one side of the outdoor side plate portion 465 in the left-right direction. The smoke return portion 467 is connected to the outdoor side plate portion 455. The meeting stile 46 has a hollow section 46b formed within it, surrounded by a groove bottom plate section 461, an indoor side plate section 464, an outdoor side plate section 465, and an outer plate section 466.

[0045] (Second Embodiment) Figures 5 to 7 show the joinery 1B of the second embodiment. In the drawings of the second embodiment, components and areas similar to those of the first embodiment are indicated by the same reference numerals as in the first embodiment. As shown in Figures 5 and 8, the joinery 1B according to the second embodiment has an outside air introduction path 8 that introduces outside air into the bottom frame space 7 between the bottom frame 5 and the bottom stile 6 of the inner sash 3.

[0046] As shown in Figure 8, the lower frame 6 of the second embodiment has an indoor lower plate portion 64 and an outdoor lower plate portion 65 instead of the lower plate portion 66 of the lower frame 6 of the first embodiment. The indoor lower plate portion 64 protrudes outward from the middle of the height direction of the indoor side plate portion 61. The outdoor lower plate portion 65 protrudes inward from the middle of the height direction of the outdoor side plate portion 62. The indoor lower plate portion 64 and the outdoor lower plate portion 65 are positioned at the same height. The indoor lower plate portion 64 and the outdoor lower plate portion 65 are positioned below the upper plate portion 63. The indoor lower plate portion 64 and the outdoor lower plate portion 65 are spaced apart in the indoor and outdoor directions throughout the entire left-right direction. The space between the indoor lower plate portion 64 and the outdoor lower plate portion 65 is denoted as a slit 641. The slit 641 opens in the vertical direction and extends in the left-right direction.

[0047] The lower frame 6 has a lower void 6b formed below the upper plate portion 63, surrounded by the indoor side plate portion 61, the outdoor side plate portion 62, and the upper plate portion 63. The upper plate portion 63 is a partition that separates the lower void 6b from the interior of the glass groove portion 6a. The lower void 6b is a groove that opens downwards. The roller 37 of the inner sash 3 is installed in the lower void 6b. The roller 37 penetrates vertically through the slit 641 between the indoor lower plate portion 64 and the outdoor lower plate portion 65. The space above and below the indoor lower plate portion 64 and the outdoor lower plate portion 65 in the lower void 6b are connected via the slit 641 between the indoor lower plate portion 64 and the outdoor lower plate portion 65. Air circulates between the space above and below the indoor lower plate portion 64 and the outdoor lower plate portion 65 in the lower void 6b. The lower frame lower stile space 7 is the space formed by the combination of the interior of the upper groove portion 5b of the lower frame 5 and the interior of the lower space portion 6b of the lower stile 6.

[0048] The indoor side panel portion 61 of the lower frame 6 and the indoor side panel portion 51 of the lower frame 5, which form the lower frame lower space 7, are in contact via an airtight material 511. The outdoor side panel portion 62 of the lower frame 6 and the inner sliding door rail 54 of the lower frame 5 are in contact via an airtight material 623. The lower frame 5 and the lower frame 6 are in contact on the outdoor side via an airtight material 623 and on the indoor side via an airtight material 511.

[0049] As shown in Figures 8 and 9, the lower plate portion 58 of the inner sash rail of the lower frame 5 has a hole 581 that penetrates in the indoor / outdoor direction. In Figure 9, the intermediate plate portion 57 is partially omitted to show the hole 581 of the lower plate portion 58 of the inner sash rail. The lower plate portion 58 of the inner sash rail is provided continuously below the inner sash rail 54. The upper plate portion 56 of the lower frame 5 has a hole 561 that penetrates in the vertical direction.

[0050] The intermediate plate portion 57 has a hole 573 that penetrates vertically. The hole 573 is located near the outdoor end of the intermediate plate portion 57 in the indoor-outdoor direction, that is, adjacent to the inner sash rail 54. The hole 573 is formed to one side of the center in the left-right direction of the intermediate plate portion 57. For example, the hole 573 is formed near one end of the intermediate plate portion 57 in the left-right direction. The area near one end of the intermediate plate portion 57 in the left-right direction is the part below the inner sash 3 that closes the opening. The hole 573 connects the space between the rails 5c below the intermediate plate portion 57 and the space 5d above the intermediate plate portion 57.

[0051] As shown in Figure 9, the plan view shape of the hole 573, when viewed from above and below, is a rectangle extending in the left-right direction. Of the periphery of the hole 573, the portion corresponding to the longer side on the indoor side of the rectangle and along the inner sash rail 54 is denoted as the indoor edge 573a. Of the periphery of the hole 573, the portion corresponding to the longer side on the indoor side of the rectangle and opposite to the indoor edge 573a is denoted as the outdoor edge 573b. Of the periphery of the hole 573, the edges corresponding to the shorter side on the indoor side of the rectangle and connecting the indoor edge 573a and the outdoor edge 573b are denoted as side edges 573c, 573c. A radius (R) is formed at the corners between the outdoor edge 573b and the side edges 573c, 573c.

[0052] The inner sliding door rail 54 has a hole 541 that penetrates in the indoor-outdoor direction. The hole 541 is formed near the lower end of the inner sliding door rail 54. The hole 541 is located above the upper plate portion 56. The left-right position of the hole 541 is the same as the left-right position of the hole 573 in the intermediate plate portion 57. That is, the hole 541 of the inner sliding door rail 54 is formed to one side of the left-right center of the inner sliding door rail 54. For example, the hole 541 is formed near one end in the left-right direction of the inner sliding door rail 54. The hole 541 connects the space 5d above the intermediate plate portion 57 to the inside of the upper groove portion 5b on the indoor side of the inner sliding door rail 54. The hole 541 is an elongated hole that extends in the left-right direction.

[0053] A cover member 59 is attached to the lower frame 5. The cover member 59 is inserted into the hole 573 of the intermediate plate portion 57 and is also provided at the corner between the outdoor side surface of the inner sash rail 54 of the lower frame 5 and the upper surface of the intermediate plate portion 57, positioned above the hole 573 of the intermediate plate portion 57 and on the outdoor side of the hole 541 of the inner sash rail 54. The cover member 59 does not block the hole 573 of the intermediate plate portion 57 and the hole 541 of the inner sash rail 54. The cover member 59 is made of resin, for example. The cover member 59 has a fixing portion 591, a cover portion 592, and a connecting rib 593. The fixing portion 591 is inserted into the intermediate plate portion 57 from above. The cover portion 592 is provided at the corner between the outdoor side surface of the inner sash rail 54 of the lower frame 5 and the upper surface of the intermediate plate portion 57. Refer to Figure 11 for the connecting rib 593.

[0054] As shown in Figures 10 and 11, the plan view shape of the fixing portion 591 is a C shape along the outdoor edge 573b and the outdoor portion of the side edges 573c, 573c of the periphery of the hole 573 of the intermediate plate portion 57. Refer to Figure 9 for the periphery of the hole 573 of the intermediate plate portion 57. The portion of the fixing portion 591 that is positioned along the outdoor edge 573b of the hole 573 is denoted as the outdoor plate portion 591a, and the portions that are positioned along the side edges 573c, 573c of the hole 573 are denoted as the side portions 591b, 591b. A claw portion 594a that protrudes outward in the outdoor direction is formed on the lower portion of the outdoor plate portion 591a. A claw portion 594b that protrudes outward in the left-right direction is formed on the lower portion of the side portions 591b, 591b. The upper edges of the side sections 591b, 591b are gradually sloped upward from the outdoor side towards the indoor side.

[0055] The cover portion 592 is connected to the upper side of the fixing portion 591. The cover portion 592 has an upper plate portion 592a, an outdoor plate portion 592b, and side plate portions 592c, 592c. The upper plate portion 592a is a flat plate with a rectangular surface. The upper plate portion 592a is positioned with its longer side extending in the left-right direction and is inclined so that the indoor side is higher than the outdoor side. The outdoor plate portion 592b extends downward from the outdoor edge of the upper plate portion 592a, i.e., the edge that is positioned lower. The side plate portions 592c, 592c extend downward from the left-right edges of the upper plate portion 592a. The left-right edges of the outdoor plate portion 592b are connected to the rear edges of the side plate portions 592c, 592c. When viewed from both the indoor and outdoor directions, the shape of the outdoor plate portion 592b is a rectangle extending in the left-right direction. The shape of the side panels 592c, 592c when viewed from the left and right is trapezoidal. The upper edges of the side panels 592c, 592c gradually extend upward from the outdoor side towards the indoor side. The lower edges of the outdoor panel 592b and the lower edges of the side panels 592c, 592c are horizontal. The left-right dimension of the cover 592 is larger than the left-right dimension of the fixing part 591. The indoor-outdoor dimension of the cover 592 is larger than the indoor-outdoor dimension of the fixing part 591.

[0056] The upper plate portion 592a of the cover portion 592 is connected to the outdoor plate portion 591a and the upper edges of the side portions 591b, 591b of the fixing portion 591. The outdoor plate portion 592b of the cover portion 592 is positioned on the outdoor side of the outdoor plate portion 591a of the fixing portion 591. The side plate portions 592c, 592c of the cover portion 592 are positioned on the left and right outer sides of the side portions 591b, 591b of the cover member 59. The lower edge of the cover portion 592 is positioned above the lower edge of the fixing portion 591. The connecting rib 593 is positioned midway between the cover portion 592 and the fixing portion 591 in the left and right direction. The connecting rib 593 is flat. The connecting rib 593 is positioned with its plate surface facing left and right. The upper edge and the outdoor edge of the connecting rib 593 are connected to the cover portion 592 and the fixing portion 591.

[0057] The cover member 59 is attached to the lower frame 5 as follows. The fixing part 591 is inserted from above into the hole 573 of the intermediate plate part 57. The claws 594a and 594b of the fixing part 591 elastically deform and pass through the hole 573. The elastic deformation of the claws 594 is restored and they are positioned in the intermediate plate part 57, preventing the fixing part 591 from being pulled upward. The outdoor plate part 592b of the cover member 59 is positioned on the outdoor side of the hole 573. The side plate parts 592c, 592c of the cover member 59 are positioned on both sides of the hole 573 in the left-right direction. The lower edge 592d of the cover part 592 is in contact with the upper surface of the intermediate plate part 57. The indoor side edge 592e of the upper plate part 592a is in contact with the outdoor side surface of the inner sash rail 54 above the hole 541 of the inner sash rail 54. The indoor-side edges 592f of the side plate portions 592c, 592c of the cover portion 592 contact the outdoor-side surface of the inner sash rail 54 on the outside in the left-right direction of the hole portion 541.

[0058] By allowing air to pass through the holes 573 in the intermediate plate portion 57, the holes 541 in the inner sliding door rail 54, and the inside of the cover member 59, the air in the space between the rails 5c of the lower frame 5 can reach the upper groove portion 5b of the lower frame 5.

[0059] The outside air introduction path 8 introduces outside air from the space 5c between the rails of the lower frame 5 into the lower frame space 7. The outside air introduction path 8 is composed of the cover member 59, the hole 573 in the intermediate plate 57, and the hole 541 in the inner sash rail 54. The outside air introduction path 8 is a path that goes from the space 5c between the rails of the lower frame 5, through the inside of the cover member 59, through the hole 573 in the intermediate plate 57, through the hole 541 in the inner sash rail 54, and reaches the lower frame space 7. The outside air introduction path 8 can allow the air from the space 5c between the rails of the lower frame 5 to reach the lower frame space 7.

[0060] As described above, the outdoor side plate portion 62 of the lower frame 6 and the inner sliding rail 54 of the lower frame 5 are in contact via an airtight seal 623. The airtight seal 623 is provided only at both ends of the lower frame 6 in the longitudinal direction, i.e., in the left-right direction, and not in the middle portion in the left-right direction. Therefore, at both ends of the lower frame 6 in the left-right direction, the gap between the outdoor side plate portion 62 of the lower frame 6 and the inner sliding rail 54 of the lower frame 5 is sealed by the airtight seal 623. In the middle portion of the lower frame 6 in the left-right direction, a gap is formed between the outdoor side plate portion 62 of the lower frame 6 and the inner sliding rail 54 of the lower frame 5. As a result, at both ends of the lower frame 6 in the left-right direction, it is possible to prevent rainwater from entering the lower frame space 7 through the gap between the outdoor side plate portion 62 of the lower frame 6 and the inner sliding rail 54 of the lower frame 5. In the middle section of the lower frame 6 in the left-right direction, outside air can be introduced into the lower frame space 7.

[0061] As shown in Figures 8 and 15 to 17, a hole 631 is formed in the upper plate portion 63 of the lower frame 6, penetrating in the vertical direction. Outside air introduced into the lower frame space 7 is introduced into the glass groove portion 6a of the lower frame 6 through the hole 631. The glass groove portion 6a of the lower frame 6 is connected to the glass groove portions 35a and 36a of the door frame 35 and meeting frame 36. Refer to Figure 6 for the glass groove portions 35a and 36a of the door frame 35 and meeting frame 36. Outside air introduced into the glass groove portion 6a of the lower frame 6 is also introduced into the glass groove portions 35a and 36a of the door frame 35 and meeting frame 36. The glass grooves 35a and 36a of the door frame 35 and meeting frame 36 are connected to the glass groove 33a of the upper frame 33. The outside air introduced into the glass grooves 35a and 36a of the door frame 35 and meeting frame 36 is introduced into the glass groove 33a of the upper frame 33. As a result, the inside of the glass grooves 6a, 35a, 36a, and 33a of the lower frame 6, door frame 35, meeting frame 36, and upper frame 33 are at the same pressure as the outside air.

[0062] As described above, the door frame 35 has a hollow door frame portion 35b surrounded by a groove bottom plate portion 351, an indoor side plate portion 354, an outdoor side plate portion 355, and an outer plate portion 356. The outer plate portion 356 is a partition portion that separates the hollow door frame portion 35b from the area outside the hollow door frame portion 35b in the left-right direction. As shown in Figures 13, 16, and 18, the outer plate portion 356 has an outer hole portion 356a that penetrates in the left-right direction. The outer hole portion 356a introduces outside air into the hollow door frame portion 35b. As shown in Figure 19, the groove bottom plate portion 351 has a hole portion 351a that penetrates in the left-right direction. The hole portion 351a connects the inside of the hollow door frame portion 35b to the inside of the glass groove portion 35a. The door frame 35 allows outside air to be introduced into the glass groove 35a through the outer hole 356a, the hollow part of the door frame 35b, and the hole 351a.

[0063] As shown in Figure 8, the lower frame 44 of the outer sliding door 4 has an indoor lower plate portion 444 and an outdoor lower plate portion 445 instead of the lower plate portion 447 of the first embodiment.

[0064] The indoor bottom plate section 444 has a first plate section 444a, a second plate section 444b, and a third plate section 444c. The first plate section 444a protrudes outward from the lower end of the indoor side plate section 441. The second plate section 444b protrudes downward from the outdoor side end of the first plate section 444a. The third plate section 444c protrudes outward from the lower end of the second plate section 444b. The outdoor bottom plate section 445 protrudes inward from the middle of the outdoor side plate section 442 in the height direction. The third plate section 444c of the indoor bottom plate section 444 and the outdoor bottom plate section 445 are positioned at the same height. The indoor bottom plate section 444 and the outdoor bottom plate section 445 are positioned below the middle plate section 446. As shown in Figures 12 to 14, the indoor bottom plate section 444 and the outdoor bottom plate section 445 are positioned with a gap between them in the indoor and outdoor directions. The distance between the indoor bottom plate section 444 and the outdoor bottom plate section 445 is denoted as the slit 444d.

[0065] The lower space 44b, located below the middle plate 446 and surrounded by the indoor side plate 441, the outdoor side plate 442, and the upper plate 443, is where the rollers 47 of the outer sliding door 4 are installed. The lower space 44b is a groove that opens downwards. The rollers 47 pass through the slit 444d between the indoor lower plate 444 and the outdoor lower plate 445 in the vertical direction. The rollers 47 are positioned above and below the indoor lower plate 444 and the outdoor lower plate 445. The lower frame 44 has a hollow space 44c formed in it, surrounded by the indoor side plate 441, the outdoor side plate 442, the upper plate 443, and the middle plate 446. The hollow space 44c is positioned below the glass groove 44a via the upper plate 443. As shown in Figure 17, the upper plate 443 has a hole 443a that passes through in the vertical direction. The hole 443a connects the hollow portion 44c to the interior of the glass groove portion 44a. The hollow portion 44c is positioned above the lower hollow portion 44b via the intermediate plate portion 446.

[0066] As shown in Figure 23, a hole 461a is formed in the groove bottom plate portion 461 of the meeting frame 46 of the outer sash 4, penetrating in the left-right direction. A hole 466a is formed in the outer plate portion 466, penetrating in the left-right direction. The hole 466a in the outer plate portion 466 introduces outside air into the hollow portion 46b of the meeting frame. The hole 461a in the groove bottom plate portion 461 allows air from the hollow portion 46b of the meeting frame to be introduced into the glass groove portion 46a.

[0067] As shown in Figures 13, 15, and 21, the outer plate portion 456 of the door frame 45 of the outer sliding door 4 has an outer hole 456a that penetrates in the left-right direction. The outer hole 456a introduces outside air into the hollow portion 45b of the door frame. As shown in Figure 18, the groove bottom plate portion 451 has a hole 451a that penetrates in the left-right direction. The hole 451a connects the inside of the hollow portion 45b of the door frame to the inside of the glass groove portion 45a. The door frame 45 can introduce outside air into the glass groove portion 45a through the outer hole 456a, the hollow portion 45b of the door frame, and the hole 451a. The outer plate portion 456 is a partition portion that separates the hollow portion 45b of the door frame from the area outside the hollow portion 45b in the left-right direction.

[0068] As shown in Figures 13, 16, and 18, the outer plate portion 356 of the door frame 35 of the inner sliding door 3 has an outer hole 356a that penetrates in the left-right direction. The outer hole 356a introduces outside air into the hollow portion 35b of the door frame. As shown in Figure 15, the groove bottom plate portion 351 has a hole 351a that penetrates in the left-right direction. The hole 351a connects the inside of the hollow portion 35b of the door frame to the inside of the glass groove portion 35a. The door frame 35 can introduce outside air into the glass groove portion 35a through the outer hole 356a, the hollow portion 35b of the door frame, and the hole 351a. The outer plate portion 356 is a partition portion that separates the hollow portion 35b of the door frame from the area outside the hollow portion 35b in the left-right direction.

[0069] The meeting frame 36 of the inner sliding door 3 is not provided with an indoor projection 368 as in the first embodiment. As shown in Figure 20, the groove bottom plate portion 361 of the meeting frame 36 does not have a hole connecting the glass groove portion 36a and the hollow portion 36b of the meeting frame. The meeting frame 36 may have a hole for introducing outside air or a hole connecting the glass groove portion 36a and the hollow portion 36b of the meeting frame.

[0070] The second embodiment of the door 1B, like the first embodiment, is provided with an airtight seal 448 attached to the lower projection 442b of the lower frame 44 of the outer sash 4, which protrudes inward. The tip 448a of the airtight seal 448 is in contact with or close to the outer sash rail 55 of the lower frame 5. The second embodiment of the door 1B provides the same effects as the door 1 of the first embodiment.

[0071] The lower frame 5 is provided with an airtight seal 511 on the outdoor side surface of the indoor side panel 51, which is located on the indoor side. The airtight seal 511 is in contact with the indoor side surface of the indoor side panel 61, which is the indoor side of the lower frame 6 of the inner sash 3. The lower frame 6 of the inner sash 3 is provided with an airtight seal 623 on the indoor side surface of the outdoor side panel 62, which is the outdoor side. The airtight seal 623 is in contact with the outdoor side surface of the inner sash rail 54 of the lower frame 5. The lower frame 5 and the lower frame 6 are in contact on the outdoor side via the airtight seal 623 and on the indoor side via the airtight seal 511. This prevents rainwater from entering the lower frame space 7 through the gap between the lower frame 5 and the lower frame 6. The lower frame 5 has an outside air introduction path 8 formed therein to introduce outside air into the lower frame space 7. Therefore, even if the bottom frame 5 and the bottom rail 6 are in contact via airtight materials 511 and 623, outside air can be introduced into the bottom frame-bottom rail space 7, and the bottom frame-bottom rail space 7 can be made to equal pressure with the outside air. This prevents rainwater from outside from being drawn into the bottom frame-bottom rail space 7. Since the door 1 can prevent rainwater from entering the bottom frame-bottom rail space 7, it can prevent rainwater from entering the interior of the building from the bottom frame-bottom rail space 7.

[0072] The outside air intake path 8 is connected to the lower frame space 7 through the holes 573 in the intermediate plate portion 57 formed in the lower frame 5 and the holes 541 in the inner sash rail 54. The lower frame 5 has a cover member 59 positioned above the holes 573 in the intermediate plate portion 57 and the holes 541 in the inner sash rail 54 to form the outside air intake path 8. This prevents rainwater from entering the interior through the holes 573 in the intermediate plate portion 57 and the holes 541 in the inner sash rail 54.

[0073] When rainwater enters the lower frame space 7, it is easier for rainwater to enter the interior from both ends of the lower frame space 7 than from the middle part in the left-right direction. In the above embodiment, the airtight material 623 of the lower frame 6 is provided only at both ends in the longitudinal direction of the lower frame 6. Therefore, it is possible to prevent rainwater from entering the interior without providing airtight material 623 along the entire length of the lower frame 6. Outside air can be introduced into the lower frame and lower frame space 7 from the area where the airtight seal 623 is not provided between the lower frame 5 and the lower frame 6. Therefore, even if the amount of outside air introduced into the lower frame and lower frame space 7 from the outside air introduction path 8 is small, outside air is still introduced into the lower frame and lower frame space 7, thus maintaining an isobaric structure.

[0074] A hole 631 is formed in the upper plate portion 63 of the lower frame 6, connecting the lower void portion 6b with the inside of the glass groove portion 6a. Therefore, outside air can be introduced into the inside of the glass groove portion 6a, and the inside of the glass groove portion 6a can be made to equal pressure with the outside air. The glass groove portion 6a of the lower frame 6 is connected to the glass groove portions 35a and 36a of the door frame 35 and meeting frame 36, so outside air can be introduced into the glass groove portions 35a and 36a of the door frame 35 and meeting frame 36. The inside of the glass groove portions 35a and 36a of the door frame 35 and meeting frame 36 can also be made to equal pressure with the outside air.

[0075] The bottom plate portion 351 of the door frame 35 of the inner sliding door 3 is provided with a hole 351a that allows outside air to be introduced into the glass groove portion 35a. Outside air can also be introduced into the glass groove portion 35a of the door frame 35. The inside of the glass groove portion 35a of the door frame 35 can also be made to be at the same pressure as the outside air.

[0076] (Third embodiment) As shown in Figure 24, the door 1C according to the third embodiment differs from the door 1 of the first embodiment in its outside air intake path 8. The outside air intake path 8C of the door 1C according to the third embodiment is composed of the hole 581 in the lower plate portion 58 of the inner sash rail, the hollow portion 5a of the lower frame, and the hole 561 in the upper plate portion 56. See also Figure 9 for the holes 581 in the lower plate portion 58 of the inner sash rail, the hollow portion 5a of the lower frame, and the holes 561 in the upper plate portion 56. The outside air introduction path 8C is a path through which air flows from the space between the rails 5c of the lower frame 5, through the holes 581 in the lower plate portion 58 of the inner sash rail, into the hollow portion 5a of the lower frame, and through the holes 561 in the upper plate portion 56 to reach the lower frame lower stile space 7. The outside air introduction path 8C allows the air in the space between the rails 5c of the lower frame 5 to reach the lower frame lower stile space 7. The joinery 1C according to the third embodiment does not have the cover member 59 of the joinery 1B according to the second embodiment.

[0077] The door 1C of the third embodiment, like the first embodiment, is provided with an airtight material 448 attached to the lower projection 442b of the lower frame 44 of the outer sash 4 and protruding inward. The tip 448a of the airtight material 448 is in contact with or close to the outer sash rail 55 of the lower frame 5. The door 1C of the third embodiment provides the same effects as the door 1 of the first embodiment.

[0078] In the door 1C according to the third embodiment, as in the second embodiment, the bottom frame 5 and the bottom rail 6 are in contact via airtight materials 511 and 623. This prevents rainwater from entering the bottom frame-bottom rail space 7 through the gap between the bottom frame 5 and the bottom rail 6. The bottom frame 5 has an outside air introduction path 8C formed therein to introduce outside air into the bottom frame-bottom rail space 7. Therefore, even though the bottom frame 5 and the bottom rail 6 are in contact via airtight materials 511 and 623, outside air can be introduced into the bottom frame-bottom rail space 7, making the bottom frame-bottom rail space 7 equal in pressure with the outside air. This prevents rainwater from being drawn into the bottom frame-bottom rail space 7. Since door 1C can prevent rainwater from entering the bottom frame-bottom rail space 7, it can prevent rainwater from entering the interior from the bottom frame-bottom rail space 7.

[0079] In the door 1C according to the third embodiment, the intermediate plate portion 57 protrudes outward from a position slightly below the upper end of the lower plate portion 58 of the inner sash rail. The outdoor end of the intermediate plate portion 57 is positioned on the indoor side and above the outer sash rail 55. An airtight seal 571 is attached to the outdoor end of the intermediate plate portion 57. A groove 572 for attaching the airtight seal 571 is formed at the outdoor end of the intermediate plate portion 57. The airtight seal 571 is in contact with the indoor side surface of the indoor side plate portion 441 of the lower frame 44 of the outer sash 4.

[0080] This disclosure is not limited to the embodiments described above and can be modified as appropriate. For example, the joinery 1,1B may be a resin sash or a composite sash of metal and resin, such as an aluminum-resin composite sash. The glass panels 32,42 may be single-pane glass or double-pane glass. The building in which the joinery 1,1B is installed may be a detached house or the like, in addition to a building. The form of the airtight material 448 attached to the lower frame 44 of the outer sash 4 may be other than those described above.

[0081] The outdoor side plate portion 52 of the lower frame 5 does not necessarily have to have a hole 521. The airtight material 448 attached to the lower frame 44 of the outer sash 4 may be positioned lower than or at the same height as the hole 521 of the outdoor side plate portion 52. The outdoor side plate portion 52 of the lower frame 5 does not necessarily have to be positioned on the outdoor side of the outdoor side plate portion 442 of the lower frame 44.

[0082] The outside air intake paths 8,8C are configured to introduce outside air from the space 5c between the rails of the lower frame 5 into the lower frame space 7. However, outside air from areas other than the space 5c between the rails may be introduced, as long as the configuration introduces outside air from the outdoor side of the inner sash rail 54 into the lower frame space 7.

[0083] The airtight seal 623, which is attached to the outdoor side plate portion 62 of the lower frame 6 and contacts the inner sliding door rail 54 of the lower frame 5, may be provided along the entire length of the lower frame 6. By doing so, it is possible to prevent rainwater from entering the lower frame space 7 through the gap between the outdoor side plate portion 62 of the lower frame 6 and the inner sliding door rail 54 of the lower frame 5 along the entire length of the lower frame 6.

[0084] The lower space 6b provided below the glass groove 6a of the lower frame 6 does not need to be open downwards except for the area where the door roller 37 is placed. The position and shape of the holes for introducing outside air into the glass groove provided in the frame may be set as appropriate. Whether or not there are holes for introducing outside air into the glass groove provided in the frame may also be set as appropriate.

[0085] The glass panels 32 and 42 may be fixed to the glass groove by a sealing material or by a glazing channel.

[0086] As described above, the airtight seal 511 is provided on the outdoor side surface of the indoor side panel 51 of the lower frame 5 and is in contact with the indoor side surface of the indoor side panel 61 which is the indoor side of the lower frame 6 of the inner sash 3. The airtight seal may be provided on the indoor side surface of the indoor side panel 61 which is the indoor side of the lower frame 6 of the inner sash 3 and may be in contact with the outdoor side surface of the indoor side panel 51 of the lower frame 5. The airtight seal 623 is provided on the indoor side surface of the outdoor side panel 62 which is the outdoor side of the lower frame 6 of the inner sash 3 and is in contact with the outdoor side surface of the inner sash rail 54 of the lower frame 5. The airtight seal may be provided on the outdoor side surface of the inner sash rail 54 of the lower frame 5 and may be in contact with the indoor side surface of the outdoor side panel 62 which is the outdoor side of the lower frame 6 of the inner sash 3. [Explanation of symbols]

[0087] 1,1B,1C Joinery, 2 Frame, 3 Inner shoji screen, 4 Outer shoji screen, 5 Bottom frame, 44 Bottom rail, 55 Outer shoji screen rail, 442 Outdoor side panel, 442b Lower protrusion, 448 Airtight material, 521 Hole, 522 Upper side

Claims

1. A lower frame equipped with an exterior shoji rail positioned on the outdoor side and an interior shoji rail positioned on the indoor side, The outer shoji screen moves along the aforementioned outer shoji screen rail, The system includes an inner sliding door that moves along the inner sliding door rail, The outer sash has a lower projection that is spaced apart and faces the outer sash rail, A door or window fitting having an airtight material attached to the lower protrusion and protruding inward so as to contact or be in close proximity to the outer sliding door rail.

2. The lower frame is positioned on the outdoor side of the lower protrusion and includes a rising portion that protrudes upward, A drain hole is formed in the aforementioned rising portion. The joinery according to claim 1, wherein the airtight material is positioned above the drain hole.

3. The joinery according to claim 1 or 2, wherein the airtight material is provided only at both ends in the longitudinal direction of the lower protrusion.

4. The joinery according to claim 1 or 2, wherein the airtight material is provided over substantially the entire length of the lower protrusion.

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