JP7791055B2 - Building materials - Google Patents

Description

This invention relates to a fitting in which a windbreak plate is installed below the joint of a shoji screen on the bottom frame.

In sliding windows with inner and outer shoji screens attached to the window frame, a windbreak plate is installed below the joint of the shoji screens on the bottom frame. The windbreak plate seals the gap between the shoji screen and the bottom frame, preventing rainwater and other water from seeping inside the room beyond the shoji screen. Patent Document 1 discloses a fixture with a windbreak plate (watertight block), which is fixed to an outer rail. Furthermore, in this document, plastic parts such as the windbreak plate are fixed to a metal profile with screws.

Japanese Patent Application Laid-Open No. 2005-139842

Recently, there has been a demand for improved insulation in windows from the perspective of energy conservation, and one approach is to have the rails that guide the shoji screens be an engaging structure consisting of two interior rail members, with a cavity formed between them. When a windbreak plate is fixed to a rail with such a composite structure, it is difficult to ensure airtightness and watertightness between the windbreak plate and the underside of the shoji screen with conventional structures.

The present invention was made in consideration of the above-mentioned problems, and aims to provide a fixture that improves thermal insulation while ensuring airtightness and watertightness between the windbreak board and the shoji screen.

In order to solve the above-mentioned problems and achieve the objectives, the fittings of the present invention comprise a lower frame, outer and inner rails that are attached to the lower frame and arranged parallel to each other in the projection direction, each rail having a roller receiving portion at its top, an outer shoji screen whose rollers are guided by the roller receiving portion of the outer rail and can slide in the longitudinal direction of the lower frame, an inner shoji screen whose rollers are guided by the roller receiving portion of the inner rail and can slide in the longitudinal direction of the lower frame, a windbreak plate attached to the lower frame below the joint between the outer and inner shoji screens when they are fully closed, and a windbreak plate that is attached to the lower surface of the joint between the outer and inner shoji screens and that can slide against the rollers of the outer rail. The exterior rail is comprised of an exterior rail member including an exterior sight wall and an interior rail member including an interior sight wall, which engage to form a cavity between them. The interior rail member comprises a first interior rail member provided on the closing side of the exterior screen and a second interior rail member provided on the opening side. The wind stopper is located between the first and second interior rail members and abuts against the airtight and watertight material when the exterior screen is fully closed.

In the fittings of the present invention, the exterior rail member and the interior rail member engage to form a cavity between them, improving thermal insulation. Furthermore, the windbreak plate abuts against the airtight and watertight material in the fully closed state, ensuring airtightness and watertightness.

FIG. 1 is a view of the fitting according to the present embodiment as seen from the inside of the room. FIG. This is a vertical cross-sectional view of the lower part of the building fixture at the windbreak plate and to the left of the windbreak plate. This is a vertical cross-sectional view of the lower part of the building fixture to the right of the windbreak. This is an oblique view of the central lower end of the fixture and its surrounding area from the inside of the room. An exploded oblique view of the lower frame and vertical frame. This is an oblique view of the wind stopper plate seen from diagonally above the outdoor side. This is an oblique view of the wind stopper plate viewed from diagonally below the indoor side. This is an oblique view of the end of the mating frame of the outer shoji screen and its surrounding area. This is an exploded oblique view of the end of the mating frame and its surrounding area in the outer shoji screen. FIG. This is an oblique view of the sliding member, airtight material, windbreak plate, and indoor rail member from the inner side of the outer screen. This is a vertical cross-sectional view of a windbreak plate, sliding member, airtight material and their surrounding areas in a building fixture. This is a partially cross-sectional oblique view of the windbreak plate and insect-proof block in the lower frame and their surrounding area.

Below, an embodiment of the building fixture according to the present invention will be described in detail with reference to the drawings. However, the present invention is not limited to this embodiment.

Figure 1 shows the fitting 10 of this embodiment as seen from inside the room. Figure 2 is a cross-sectional view of the fitting 10. Figure 3 is a vertical cross-sectional view of the lower part of the fitting 10 at the location of the wind stop plate 42 and a location to the left of the wind stop plate 42. Figure 4 is a vertical cross-sectional view of the lower part of the fitting 10 at the location to the right of the wind stop plate 42.

As shown in Figures 1 and 2, the fitting 10 according to this embodiment comprises an opening frame 12 fixed to an opening in the building frame, and two sliding screens, an outer screen 14 and an inner screen 15, which are slidably arranged inside the opening frame 12. In this embodiment, the fitting 10 is a sliding window in which the opening 16 formed inside the opening frame 12 can be opened and closed by sliding the screens 14, 15. The arrows in Figure 1 indicate the opening direction of each screen 14, 15.

The opening frame 12 forms a rectangular opening 16 by framing all four sides with an upper frame 18, a lower frame 20, and left and right vertical frames 22, 23. Each frame 18-22 is an extruded metal material, including aluminum, or an extruded resin material, such as polyvinyl chloride (PVC), and is configured to have a substantially uniform cross-section along its entire length. In this application, aluminum material is considered to include alloy materials. Each frame 18-22 may also be a composite structure, with a resin frame material attached to the interior side of the metal frame material, such as an aluminum-resin composite frame. Of these, the lower frame 20 is an aluminum-resin composite frame, which will be described later. The opening frame 12 is fixed to the building frame using fasteners 25, such as screws or nails (see Figure 3).

In this application, the "visible direction" refers to the indoor/outdoor direction of the fitting 10, that is, the direction from the inside of the room to the outside, or the opposite direction, and the "visible surface" refers to a surface extending along the visible direction. The "visible direction" refers to a direction perpendicular to the visible direction, and in the case of vertical frames 22, 23, etc. that are long in the vertical direction, it refers to the left-right direction that is perpendicular to the longitudinal direction, and in the case of bottom frames 20, etc. that are long in the horizontal direction, it refers to the up-down direction that is perpendicular to the longitudinal direction. The "visible surface" refers to a surface along the visible direction. Furthermore, "left" and "right" are based on the state as seen from the inside of the room, that is, the state shown in Figures 1 and 2.

As shown in Figure 3, the lower frame 20 has an outer rail 24 and an inner rail 26 aligned in the projection direction. The rails 24, 26 protrude inward (upward) from the projection surface on the inside of the frame of the lower frame 20 and extend the entire length of the frame. The outer rail 24 slidably guides the outer shoji screen 14 on the outside of the room. The inner rail 26 slidably guides the inner shoji screen 15.

The upper frame 18 also has similar rails on the inner surface of the frame, facing the rails 24 and 26. The vertical frames 22 and 23 are connected to the frames 18 and 20, for example, so as to cover the fore-end faces of the frames 18 and 20 (see Figures 1 and 2).

The outer shoji screen 14 is made up of an upper frame 28a, a lower frame 28b, a door edge frame 28c, and a joint frame 28d surrounding the screen, and a panel 30 placed on the inside. The panel 30 is a double-glazed glass panel, with a pair of glass panes 30a, 30b arranged facing each other at a distance, for example, via a spacer.

Each frame 28a-28d may be constructed from a single extruded metal or resin material, or may be a composite structure made from an extruded metal material such as aluminum and an extruded resin material such as polyvinyl chloride resin.

As shown in Figures 3 and 4, the lower stile 28b has an opening groove 32 on its lower projection surface that accommodates the outer rail 24, and a panel placement groove 33 on its upper projection surface that accommodates the lower edge of the panel 30. The opening groove 32 protrudes downward from the projection surface of the lower stile 28b and is formed between a pair of hanging pieces 32a, 32b that are aligned in the projection direction. The panel placement groove 33 is formed between a pair of protruding pieces formed on the lower stile 28b. The panel placement grooves 33 of the other stiles 28a, 28c, and 28d also accommodate the upper or side edges of the panel 30.

A sealant 34a protrudes from the lower end of the outdoor-side hanging piece 32a toward the indoor side, and a sealant 34b protrudes from the lower end of the indoor-side hanging piece 32b toward the outdoor side. The sealants 34a and 34b are held in place by pockets formed at the lower ends of the hanging pieces 32a and 32b. The sealants 34a and 34b face each other, sandwiching the upper end of the outer rail 24 between them to provide airtight and watertight sealing between the outdoor and indoor sides. The outer rail 24 is contacted by the sealants 34a and 34b from both the indoor and outdoor sides, providing a good balance. The sealants 34a and 34b are not limited to being completely waterproof or airtight, but may provide some degree of airtightness and waterproofing. The sealants 34a and 34b are, for example, mohair. The sealant 34b abuts against the side of the hook portion 54b at the engagement point between the hook portion 24ad and the hook portion 54b, as described below.

The rollers 17 of the outer shoji screen 14 are rotatably supported by the lower frame 28b, with their lower portions positioned in the opening grooves 32. The rollers 17 roll on the outer rails 24, allowing the outer shoji screen 14 to slide smoothly relative to the opening frame 12.

The inner shoji screen 15 can slide in a double-sliding manner relative to the outer shoji screen 14 by rolling the rollers 17 on the inner rail 26 of the lower frame 20. The inner shoji screen 15 may have the same or similar structure as the outer shoji screen 14. Therefore, for the inner shoji screen 15, components corresponding to those of the outer shoji screen 14 described above are given the same reference numerals, and detailed explanations will be omitted. The joint frame 28d of the inner shoji screen 15 and the joint frame 28d of the outer shoji screen 14 can be locked with a crescent 36 (see Figure 1), thereby holding the shoji screens 14 and 15 in a closed position.

In this embodiment, when the outer shoji screen 14 is in its leftmost position in Figures 1 and 2, the door end frame 28c abuts against the vertical frame 22 and is fully closed, and when the inner shoji screen 15 is in its rightmost position, the door end frame 28c abuts against the vertical frame 23 and is fully closed. A stopper 38 is provided at the rightmost end of the outer rail 24, which limits the movement of the door frame 28d when the outer shoji screen 14 is fully open. A stopper 40 is provided at the leftmost end of the inner rail 26, which limits the movement of the door frame 28d when the inner shoji screen 15 is fully open.

A windbreak plate 42 (see Figure 5) is attached to the approximate center of the visible surface of the lower frame 20. The windbreak plate 42 is a resin part that seals the gap between the rails 24, 26, preventing water and wind from entering the room through the gap between the joining sections of the shoji screens 14, 15, i.e., the gap between the joining frames 28d, 28d, thereby maintaining airtightness and watertightness between the interior and exterior.

Next, the lower frame 20 will be described in more detail.
As shown in Figures 3 and 4, the lower frame 20 is constructed by connecting an outdoor lower frame 44 and an indoor lower frame 46 via filler material 48. The outdoor lower frame 44 and the indoor lower frame 46 are both made of aluminum. Pockets 47a, 47b that hold the filler material 48 are formed where the outdoor lower frame 44 and the indoor lower frame 46 face each other. The filler material 48 is a type of resin material and prevents heat transfer between the outdoor lower frame 44 and the indoor lower frame 46.

The exterior lower frame 44 has an upper wall 44a, a lower wall 44b, an exterior wall 44c, and an interior wall 44d. These four walls form a lower cavity 44e with a slightly larger cross-sectional area. The portion of the upper wall 44a closest to the interior of the room is slightly inclined downward toward the exterior, but the portion near the outer rail 24 is horizontal.

The outdoor rail member 24a extends upward from a location slightly outside the room from the center of the upper wall 44a in the forward direction. The outdoor rail member 24a is made of aluminum and is integral with the upper wall 44a. The outdoor rail member 24a has a standing wall 24aa that forms the outdoor visible wall of the outer rail 24, a bent portion 24ab that protrudes slightly toward the room from the upper end of the standing wall 24aa, a roller receiving portion 24ac that protrudes slightly upward from the bent portion 24ab, and a hook portion 24ad provided at the tip of the bent portion 24ab. The hook portion 24ad is located close to the indoor side and at a lower position than the roller receiving portion 24ac, and is shaped to open upward. The top cross section of the roller receiving portion 24ac is semicircular arc shaped.

A screw hole 44f is provided on the underside of the upper wall 44a, near a location below the protruding point of the outdoor rail member 24a. A small positioning piece 44g protruding upward is provided on the upper surface of the upper wall 44a, slightly indoors from the protruding point of the outdoor rail member 24a. A fixing piece 44h is provided at the lower indoor end of the outdoor lower frame 44, for fixing to the frame with a fixing device 25. The upper wall 44a bends slightly downward from the connection point with the outdoor rail member 24a, extending outdoors, and a screen rail 44i extends upward from the outdoor end.

The indoor-side lower frame 46 has a projection plate 46a, an indoor-side sight plate 46b, and a middle lower plate 46c. The indoor-side sight plate 46b intersects with the indoor-side end of the projection plate 46a to form a T-shape and is in surface contact with the frame. The middle lower plate 46c protrudes downward from approximately the middle of the projection plate 46a, with its tip abutting the stepped surface of the frame. A pocket 47b is provided below the outdoor-side end of the projection plate 46a. An outdoor-side rail member 26a extends upward from the outdoor-side end of the projection plate 46a. The outdoor-side rail member 26a has a standing wall 26aa, a bent portion 26ab, a roller receiving portion 26ac, and a hook portion 26ad, which correspond to the standing wall 24aa, bent portion 24ab, roller receiving portion 24ac, and hook portion 24ad of the outdoor-side rail member 24a described above. Roller receiving portion 24ac and roller receiving portion 26ac are at the same height. A small positioning piece 46d protruding upward is provided on the upper surface of the projection plate 46a, slightly inside the room from the protruding point of the exterior rail member 26a. Positioning piece 46d has the same shape as positioning piece 44g described above.

The exterior lower frame 44 is provided with a first attachment 50 (see Figure 3) and a second attachment 52 (see Figure 4). The first attachment 50 and the second attachment 52 are separated by the location of the wind stopper plate 42 (in other words, the location facing the joining frame 28d of the outer shoji screen 14 and inner shoji screen 15 when fully closed), with the first attachment 50 on the left and the second attachment 52 on the right. The first attachment 50 is made of resin, and the second attachment 52 is made of aluminum. The attachments 50, 52 and the third attachment 60, described below, are extruded sections configured to have a substantially uniform cross section along their entire length.

As shown in FIG. 3, the first attachment 50 includes a projection plate 50a, an indoor lower plate 50b, an outdoor lower plate 50c, and a first indoor rail member 54. The projection plate 50a is positioned slightly above the positioning piece 44g so as to abut the outdoor surface of the outdoor rail member 26a. A small gap may be maintained between the projection plate 50a and the outdoor rail member 26a. The projection plate 50a is slightly inclined downward toward the outdoor side. The indoor lower plate 50b protrudes from the underside of the projection plate 50a and abuts the upper surface of the upper wall 44a at its tip. The tip of the indoor lower plate 50b has a protrusion facing the indoor side, which snap-fits with a protrusion formed in the pocket 47a. The outdoor lower plate 50c protrudes downward from the outdoor end of the projection plate 50a and abuts the upper surface of the upper wall 44a at its tip. The tip of the outdoor lower plate 50c has a protrusion facing the outdoor side, which snap-fits into the protrusion formed on the positioning piece 44g.

The first indoor rail member 54 extends upward from the end of the projection plate 50a. The first indoor rail member 54 has a standing wall 54a and a hook portion 54b. The standing wall 54a and the outdoor lower plate 50c are in a straight line and intersect with the outdoor end of the projection plate 50a to form a T. The hook portion 54b is located on the outdoor side of the upper end of the standing wall 54a and is shaped to open downward.

The hook portions 24ad and 54b are engaged with each other, with the outer rail member 24a and the first inner rail member 54 forming roughly the left half of the outer rail 24. A first upper cavity 55a is formed between the standing wall 24aa and the standing wall 54a. The first attachment 50 is positioned so that the outer lower frame 44 and filler material 48 are not visible from the inside of the room. The first attachment 50 has a desirable design, for example, a wood grain finish.

The space surrounded by the projection plate 50a, the indoor lower plate 50b, the outdoor lower plate 50c, and the upper wall 44a forms the second upper cavity 55b. The space surrounded by the projection plate 50a, the indoor lower plate 50b, the outdoor rail member 26a, the pocket 47a, and the filler material 48 forms the third upper cavity 55c.

As shown in Figure 4, the second attachment 52 has a projection plate 52a, an indoor lower plate 52b, an outdoor lower plate 52c, and a second indoor rail member 56. The projection plate 52a corresponds to the projection plate 50a of the first attachment 50, but protrudes slightly shorter toward the indoor side than the projection plate 50a, and does not abut against the outdoor surface of the outdoor rail member 26a, ensuring a gap 58. The second attachment 52 is made of aluminum and has high thermal conductivity, but is thermally insulated due to the gap 58, and heat is not transferred between the outdoor lower frame 44 and the indoor lower frame 46.

The indoor-side lower plate 52b and the outdoor-side lower plate 52c have the same shape as the indoor-side lower plate 50b and the outdoor-side lower plate 50c, and their lower ends engage with the side of the pocket 47a and the positioning piece 44g. The second indoor-side rail member 56 has approximately the same shape as the first indoor-side rail member 54, and has a standing wall 56a and a hook portion 56b.

The hook portions 24ad and 56b engage with each other, with the outer rail member 24a and the second inner rail member 56 forming roughly the right half of the outer rail 24. A first upper cavity 55a is formed between the standing wall 24aa and the standing wall 56a. The second attachment 52 is not visible from the inside of the room when the inner screen 15 is fully closed, so no special design treatment is required. Because the second attachment 52 is made of aluminum, it has better weather resistance than plastic materials and is less susceptible to deterioration even when placed in a location exposed to the outside air and sunlight.

As shown in Figure 3, a third attachment 60 is provided on the indoor side lower frame 46. The third attachment 60 is provided over the entire longitudinal length of the indoor side lower frame 46. The third attachment 60 is made of resin and has the same color, pattern, and texture as the first attachment 50 described above.

The third attachment 60 has a projection plate 60a, an indoor lower plate 60b, an outdoor lower plate 60c, a frame abutment piece 60d, and a third indoor rail member 62. The third indoor rail member 62 forms the indoor portion of the inner rail 26.

The frame abutment piece 60d has an angled shape with a visible portion and a recessed portion that fits along the corner of the frame, and the recessed portion is fixed to the frame with a fastener 25. The recessed plate 60a extends from a position slightly above the positioning piece 46d to the end of the frame abutment piece on the outside of the room. The recessed plate 60a is slightly inclined downward toward the outside of the room.

The indoor-side lower plate 60b protrudes downward from the indoor-side end of the projection plate 60a, with its tip abutting the upper surface of the projection plate 46a. The tip of the indoor-side lower plate 60b has a protrusion facing the indoor side, which engages with a protrusion formed on the indoor-side projection plate 46b in a snap-fit manner. The outdoor-side lower plate 60c protrudes downward from the outdoor-side end of the projection plate 60a, with its tip abutting the upper surface of the projection plate 46a. The tip of the outdoor-side lower plate 60c has a protrusion facing the outdoor side, which engages with a protrusion formed on the positioning piece 46d in a snap-fit manner.

The third indoor rail member 62 extends upward from the upper end of the projection plate 60a. The third indoor rail member 62 has the same shape as the first indoor rail member 54 described above, and has a standing wall 62a and a hook portion 62b. The standing wall 62a and the outdoor lower plate 60c are in a straight line and intersect with the outdoor end of the projection plate 60a to form a T. The hook portion 62b is located on the outdoor side of the upper end of the standing wall 62a and is shaped to open downward.

Hook portion 26ad and hook portion 62b are engaged with each other, with the outer rail member 26a and the third inner rail member 62 forming the inner rail 26. A fourth upper cavity 55d is formed between the vertical wall 26aa and the vertical wall 62a. A fifth upper cavity 55e is formed in the space surrounded by the projection plate 60a, the indoor lower plate 60b, the outdoor lower plate 60c, and the projection plate 46a.

The lower frame 20 has a first upper cavity 55a formed in the outer rail 24 and a fourth upper cavity 55d formed in the inner rail 26, improving thermal insulation. The lower frame 20 has an interior groove 64 with the projection board 60a as its base and the vertical wall 62a and the interior lower board 60b as its two walls; an intermediate groove 66 with the projection board 50a as its base and the vertical wall 54a and vertical wall 26aa as its two walls; and an exterior groove 68 with the upper wall 44a as its base and the screen rail 44i and vertical wall 24aa as its two walls. Rain can seep into the exterior groove 68 via the exterior shoji screen 14. Water can also seep into the interior groove 64 and intermediate groove 66 during wet cleaning, etc. The fitting 10 has drainage openings to drain water that seeps into these grooves 64, 66, and 68 to the outside of the room, and the water is discharged outside via a drain valve 71 or similar.

Figure 5 is a perspective view of the lower central end of the fitting 10 and its surrounding area, as viewed from the inside of the room. Figure 6 is an exploded perspective view of the lower frame 20 and vertical frames 22, 23. A notch 75 is formed near the right end of the outdoor rail member 24a for positioning and securing the stopper 38. A notch 77 is formed near the left end of the outdoor rail member 26a for positioning and securing the stopper 40.

As shown in Figure 6, the lower end of the vertical frame 22 and the edge of the lower frame 20 are fixed with multiple screws 87 via gasket 85. The lower end of the vertical frame 23 is fixed to the edge of the lower frame 20 in a similar manner. In Figure 6, reference numeral 71 denotes a drain valve, reference numeral 98 denotes an insect-proof block, and reference numeral 97 denotes a component mounting hole for attaching the insect-proof block 98.

Next, the windbreak plate 42 and its surrounding area will be described in more detail.
Figure 7 is a perspective view of the wind stop plate 42, viewed from diagonally above on the outdoor side. Figure 8 is a perspective view of the wind stop plate 42, viewed from diagonally below on the indoor side. The wind stop plate 42 is made of a soft resin material that is moderately elastically deformable. The wind stop plate 42 has a base plate 70, from which eight fin-shaped thin plates 72a, 72b, 72c, 72d, 72e, 72f, 72g, and 72h (representatively referred to as thin plates 72) protrude upward. The portion of the base plate 70 closest to the indoor side is slightly thicker, and two hollow portions 70a are formed in this portion.

The thin plates 72 protrude upward. The rightmost thin plate 72a and the leftmost thin plate 72h are located at both the left and right ends of the base plate 70. The portion of each thin plate 72 closest to the interior of the room is slightly higher, with the second-from-the-right thin plate 72b and the second-from-the-left thin plate 72g being particularly higher in this area. The other thin plates 72a, 72c-72f, and 72h are identical in shape. The right-side thin plates 72a-72d and the left-side thin plates 72e-72h are slightly spaced apart and are symmetrically shaped and arranged symmetrically.

Two slits 73a, 73b are formed in each thin plate 72. Slit 73a is formed along the indoor edge of the rising portion 78 (described below), and slit 73b is formed near the outdoor edge of the higher portion closer to the room. The portion between slits 73a and 73b elastically deforms as it abuts against the underside of the outer shoji screen 14, while the higher portion closer to the room than slit 73b elastically deforms as it abuts against the underside of the inner shoji screen 15.

Side plates 74, which are continuous with the thin plates 72a, 72h, are provided on both the left and right ends of the wind stopper plate 42. The side plates 74 are roughly L-shaped, with portions protruding downward from both ends of the base plate 70 and portions extending upward at the exterior end. The portions of the side plates 74 closer to the room are slightly narrower due to the formation of cutouts 74a. Grid-shaped leg plates 76, together with the side plates 74, protrude downward from the underside of the portion of the base plate 70 that is further exterior than the cutouts 74a. The central leg plates 76 reach the exterior end and form an exterior support 76a.

A rising portion 78 protrudes upward from the exterior end of the base plate 70. An engagement piece 80 is formed at the exterior end of the side plate 74, further outside than the rising portion 78. The engagement piece 80 is roughly square in side view, with its upper exterior end being rounded. A slit 82 is formed between the rising portion 78 and the engagement piece 80. The lower ends of the two engagement pieces 80 are connected by an exterior side plate 84. The underside of the exterior side plate 84 is connected to the exterior support 76a. A low, edging-like protrusion 86 is provided from the top of the engagement piece 80 to the exterior end face of the side plate 74.

Both ends of the rising portion 78 are continuous with the side panels 74. The indoor-side upper surface 78a of the rising portion 78 is slightly higher than the outdoor-side upper surface 78b, and the two are connected by a gently curved surface via an inclined surface 78c. Two recesses 78e are formed on the outdoor side of the rising portion 78, separated by a support pillar 78d that connects the upper part to the outdoor side panel 84. Two recesses 78g are formed on the outdoor side of the rising portion 78, surrounded by the side panels 74, leg panels 76, outdoor support pillars 76a, and outdoor side panel 84. The recesses 78g are open on the outdoor side and below, but the outdoor side is covered by the standing wall 24aa and the lower side by the upper wall 44a.

The outside portion of the wind stopper plate 42 is secured to the outdoor rail member 24a by the engagement piece 80 fitting into the lower portion of the bent portion 24ab of the outdoor rail member 24a (see Figure 13). A slit 82 is formed between the engagement piece 80 and the rising portion 78, allowing the engagement piece 80 to tilt slightly in the forward direction, making it easy to insert into the lower portion of the bent portion 24ab.

Furthermore, the projected width of the wind stop plate 42, in its natural state before being assembled to the fixture 10, is slightly larger than the projected width between the vertical wall 24aa of the outdoor rail member 24a of the outer rail 24 and the vertical wall 26aa that forms the outdoor visible surface of the inner rail 26. When the wind stop plate 42 is pushed into this space and assembled, it is clamped and fixed in place in an elastically compressed state. Furthermore, the wind stop plate 42 is positioned between the first attachment 50 and the second attachment 52, preventing it from shifting left or right. In this way, the wind stop plate 42 can be easily attached to and detached from the sill 20 without the use of screws or nails.

The positioning piece 44g of the outdoor lower frame 44 has been cut out in the area where the wind stop plate 42 will be positioned, preventing interference. The underside of the wind stop plate 42 is shaped to match the slope of the upper wall 44a and abuts the upper surface of the upper wall 44a. The indoor-facing portion of the hook portion 24ad of the outdoor rail member 24a has been cut out in the area where the wind stop plate 42 will be positioned, leaving only the downward piece 24ada (see Figure 14). The downward piece 24ada abuts the upper surface of the outdoor horizontal plate 84. The outdoor horizontal plate 84 abuts against the indoor-facing surface of the standing wall 24aa. The upper edge 78h (see Figure 14) of the rising portion 78 abuts against the indoor-facing surface that continues from the roller receiving portion 24ac to the downward piece 24ada. The upper edge 78h is the part that forms the indoor-side upper surface 78a, the outdoor-side upper surface 78b, and the inclined surface 78c on the upper surface.

Figure 9 is a perspective view of the end of the joint frame 28d of the outer shoji screen 14 and its surrounding area. Figure 10 is an exploded perspective view of the end of the joint frame 28d of the outer shoji screen 14 and its surrounding area. Figure 11 is a perspective view of the airtight material 92.

As shown in Figures 9 and 10, the outer shoji screen 14's joint frame 28d and bottom frame 28b form a fastening structure in which their ends meet at a 45-degree angle. The fastening structure formed by the joint frame 28d and bottom frame 28b is provided with a sliding member 88. The sliding member 88 straddles the rail, with a portion sliding against the rail's recessed surface to prevent the shoji screen from shifting in the recessed direction, making it a useful part for guiding the shoji screen when moving it. The sliding member 88 also covers the inside of the opening groove 32 to prevent it from being exposed. A sliding member 88 is also provided in the fastening structure formed by the joint frame 28d and bottom frame 28b of the inner shoji screen 15.

The sliding member 88 has a fixing piece 88a that is fixed to the visible surface of the joint frame 28d with a screw 90, and an arch portion 88b with a downward opening that roughly follows the opening groove 32. A portion of the arch portion 88b fits into the opening groove 32, and the ceiling of this portion is provided with an engagement portion 88c that engages with an airtight material (airtight and watertight material) 92. The airtight material 92 is a part that abuts against the wind stopper plate 42 when the outer shoji screen 14 is fully closed, maintaining airtightness and watertightness between the interior and exterior of the room; however, in this embodiment, it will be referred to simply as the "airtight material" to avoid complication.

As shown in Figure 11, the airtight material 92 is symmetrical in the front-to-back direction (indoor/outdoor direction) and left-to-right directions. Because the airtight material 92 is symmetrical, it can be used even if it is inverted in the front-to-back direction when attached to the sliding member 88. The airtight material 92 has a narrow left-to-right width. The airtight material 92 has an upper engaging portion 92a and a pair of airtight pieces 92b, 92b that protrude downward from the engaging portion 92a. Engaging recesses 92c are formed on both sides of the upper surface of the engaging portion 92a, thereby forming a relatively convex engaging protrusion 92d at the bottom of the engaging portion 92a. The claws of the engaging portion 88c engage with the top and bottom of the engaging protrusion 92d, thereby fixing the airtight material 92 to the ceiling, which is the innermost part of the opening of the arch portion 88b.

The airtight pieces 92b are thin, plate-shaped, and moderately flexible. They protrude downward within the open groove of the arch portion 88b (see Figure 9). A pair of airtight pieces 92b are aligned in the forward direction, separated by a narrow slit 93. A notch 92ba is formed on the opposing side of each pair of airtight pieces 92b. The upper half of each notch 92ba is shaped like a 90-degree arc, and the two notches 92ba form a semicircular arc. This semicircular arc shape roughly conforms to the roller support portion 24ac (see Figure 13). The outer lower surface 94a of each airtight piece 92b, located on the outer side in the forward direction, is slightly higher than the inner lower surface 94b on the inner side, and the two surfaces are connected by a gently curved surface via an inclined surface 94c. The shape of this lower surface 94 corresponds to the upper surface of the rising portion 78. The airtight material 92 may be fixed to a location other than the sliding member 88, but considering the position, posture, and engagement mode with the engaging portion 88c, it is preferable to fix it to the sliding member 88.

Figure 12 is an oblique view of the sliding member 88, airtight material 92, windbreak plate 42, and first indoor rail member 54, viewed from the inner periphery of the outer shoji screen 14. Components other than the sliding member 88, airtight material 92, windbreak plate 42, and first indoor rail member 54 are omitted from Figure 12. Figure 13 is a vertical cross-sectional view of the windbreak plate 42, sliding member 88, airtight material 92, and their surrounding areas in the building fixture 10. In Figures 12 and 13, the airtight material 92 is shown with dark dots and the windbreak plate 42 with light dots for easy identification. Although Figure 13 may appear to show interference between the frame material and the thin plate 72 of the windbreak plate 42, in reality, there is no interference because the thin plate 72 elastically tilts.

As shown in Figures 12 and 13, the wind stop plate 42 is located below the joint between the outer and inner shoji screens 14 and 15 when the screens are fully closed. As described above, the airtight material 92 is fixed to the arch portion 88b of the sliding member 88 so that the two airtight pieces 92b protrude downward. The two cutout portions 92ba are located across the roller receiving portion 24ac, and the airtight pieces 92b are in contact with the top of the roller receiving portion 24ac.

The wind stop plate 42 is located between the first indoor rail member 54 and the second indoor rail member 56 (see Figure 5), and abuts against the airtight material 92 on the underside of the outer shoji screen 14 when it is fully closed, providing airtight and watertight protection. This ensures airtight and watertight protection between the wind stop plate 42 and the outer shoji screen 14.

The indoor-side upper surface 78a, inclined surface 78c, and outdoor-side upper surface 78b, which form the upper surface of the rising portion 78 of the wind stopper plate 42, elastically abut against the outer-side lower surface 94a, inclined surface 94c, and inner-side lower surface 94b, which form the lower surface of the indoor-side airtight piece 92b, respectively, to provide airtight and watertight properties. Rather than being simple flat surfaces, both surfaces are curved with inclined surfaces 78c and 94c interposed between them, providing high airtight and watertight properties.

There is a slit 93 between the two airtight pieces 92b on the indoor and outdoor sides, giving them an independent structure. Therefore, when the indoor airtight piece 92b comes into contact with the wind stopper plate 42, it may undergo some elastic deformation, but this deformation does not affect the outdoor airtight piece 92b.

The outer shoji screen 14 has a sealing material 34b that protrudes to the outside of the room where it straddles the outer rail 24 and abuts against the rising portion 78 that forms the indoor-facing wall of the wind stopper 42, providing airtight and watertight sealing. As shown in Figure 12, the indoor-facing surface 78f of the rising portion 78 is flush with the indoor-facing surface of the standing wall 54a of the first indoor-facing rail member 54. Although not shown in Figure 12, the indoor-facing surface 78f of the rising portion 78 is flush with the indoor-facing surface of the standing wall 56a of the second indoor-facing rail member 56. This ensures that the indoor-facing rail members 54, 56, and the rising portion 78 form a flush surface, preventing uneven contact pressure and sealing action of the sealing material 34b when the outer shoji screen 14 slides.

As shown in Figure 13, the fitting 10 is equipped with a screen door 96 that is guided longitudinally by a screen door rail 44i. The left and right vertical frames 96a of the screen door 96 are provided with insect seals 96b extending vertically on the interior facing surfaces. The insect seals 96b protrude toward the interior facing surfaces. Depending on the relative positions of the outer shoji screen 14 and the screen door 96, the insect seals 96b abut against the exterior facing surfaces of the door end frame 28c and the door joint frame 28d of the outer shoji screen 14, preventing the entry of insects and foreign objects.

Figure 14 is a partially sectional perspective view of the wind stop plate 42 and insect block 98 and their surrounding areas on the lower frame 20. As shown in Figures 13 and 14, a component mounting hole 97 is formed in the upright wall 24aa that forms the exterior facing surface of the exterior rail member 24a at a position that overlaps with the wind stop plate 42. The insect block 98 is fixed to the exterior rail member 24a by fitting a protrusion 98a that protrudes indoors into the component mounting hole 97. This allows the exterior facing surface of the insect block 98 to be fixed so that it can abut against the insect seal 96b. The insect block 98 is positioned outside the exterior rail member 24a and to roughly fill the space below the joint frame 28d. The exterior facing surface of the insect block 98 abuts against the insect seal 96b, further preventing the intrusion of insects and foreign objects.

The component mounting hole 97 has a certain degree of airtightness and watertightness due to the projection 98a fitting into it, but the wind stop plate 42 provides even greater airtightness and watertightness. That is, the component mounting hole 97 is exposed to the recess 78g of the wind stop plate 42 on the indoor side of the standing wall 24aa, but the recess 78g is a closed space formed by the side plate 74, leg plate 76, outdoor support 76a, outdoor side plate 84, and standing wall 24aa. Therefore, the wind stop plate 42 separates the component mounting hole 97 from the indoor space, ensuring airtightness and watertightness.

The present invention is not limited to the above-described embodiments, and can of course be freely modified without departing from the spirit of the present invention.

The fixture of the present invention comprises a lower frame, outer and inner rails that are attached to the lower frame and arranged parallel to each other in the projection direction, each rail having a roller receiving portion at its top, an outer shoji screen whose rollers are guided by the roller receiving portion of the outer rail and can slide in the longitudinal direction of the lower frame, an inner shoji screen whose rollers are guided by the roller receiving portion of the inner rail and can slide in the longitudinal direction of the lower frame, a windbreak plate attached to the lower frame below the joint between the outer and inner shoji screens when they are fully closed, and a windbreak plate that is designed so that the underside of the joint of the outer shoji screen straddles the roller receiving portion of the outer rail. The exterior rail is comprised of an exterior rail member including an exterior sight wall and an interior rail member including an interior sight wall, which engage to form a cavity between them. The interior rail member comprises a first interior rail member provided on the closing side of the exterior screen and a second interior rail member provided on the opening side. The wind stopper is located between the first and second interior rail members and abuts against the airtight and watertight material when the exterior screen is fully closed.

In this type of fixture, the exterior rail member and the interior rail member engage to form a cavity between them, improving insulation. Furthermore, the windbreak plate abuts against the airtight and watertight material when fully closed, ensuring airtight and watertight properties.

In the fittings of the present invention, the outer shoji screen may have a sealant that protrudes from the indoor side of the two hanging pieces that straddle the outer rail to the outdoor side and abuts against the indoor side wall of the wind stopper. This further improves airtightness and watertightness.

In the fittings of the present invention, the windbreak plate has a raised portion on its upper surface that abuts against the airtight and watertight material, and the raised portion and the interior rail member may have their interior facing surfaces on the same plane. This prevents uneven contact pressure and sealing action of the sealing material when the exterior screen slides.

In the fittings of the present invention, the exterior rail member may have a bent portion that protrudes from the exterior visible wall toward the interior of the room, and the windbreak plate may be fixed to the exterior rail member by fitting a portion of the windbreak plate below the bent portion. This fixing method is simple, as it simply involves fitting a portion of the windbreak plate below the bent portion, and does not require fasteners such as screws.

In the fittings of the present invention, the windbreak plate may be sandwiched in an elastically compressed state between the outer rail member of the outer rail and the inner rail. This type of fixing method is simple, as it simply involves pressing the windbreak plate against the fitting, and does not require fasteners such as screws.

In the fittings of the present invention, the first indoor rail member may be made of a resin material, and the second indoor rail member may be made of an aluminum material. Since the first indoor rail portion corresponds to the indoor space, it is preferable to use a resin material that has excellent heat insulation and design properties. Since the second indoor rail portion corresponds to the outdoor space, it is preferable to use an aluminum material that has excellent weather resistance.

In the fittings of the present invention, a sliding member that straddles the outer rail and slides against the outer rail may be provided on the underside of the outer screen, and the airtight/watertight material may be fixed to the sliding member. The position and shape of the sliding member are suitable for attaching the airtight/watertight material.

The fixture of the present invention includes a screen door rail located on the exterior side of the outer rail; a screen door that is guided by the screen door rail and can slide longitudinally of the lower frame; an insect-proof sealant attached to the interior facing surface of the screen door's vertical stile; a component mounting hole formed on the exterior facing surface of the exterior rail member in a position that overlaps with the wind stop plate; and an insect-proof block fixed to the component mounting hole so as to abut against the insect-proof sealant; the wind stop plate may serve as a partition between the component mounting hole and the interior space. In this way, the wind stop plate can also serve as a partition for the component mounting hole of the insect-proof block.

10 fittings, 14 outer shoji screen, 15 inner shoji screen, 17 roller, 20 bottom frame, 24 outer rail, 24a outdoor rail member, 24aa standing wall, 24ab bent portion, 24ac roller receiving portion, 24ad hook portion, 26 indoor rail, 26aa standing wall, 28b bottom frame, 28c door edge frame, 28d joint frame, 34a, 34b sealing material, 42 wind stop plate, 50 first attachment, 52 second attachment, 60 third attachment, 54 first indoor rail member, 56 second indoor rail member, 62 third indoor rail member, 62a standing wall, 78 rising portion, 78a indoor upper surface, 78b outdoor upper surface, 78c inclined surface, 78f indoor facing surface, 80 Engagement piece, 88: Sliding member, 92: Airtight material (airtight and watertight material), 92b: Airtight piece, 92ba: Notch, 94a: Outer lower surface, 94b: Inner lower surface, 94c: Sloped surface, 96: Screen, 96b: Insect seal, 97: Part mounting hole, 98: Insect block.

Claims (8)

The bottom frame and
An outer rail and an inner rail are provided on the lower frame, are arranged side by side in the projection direction, and have roller receiving portions at their tops;
An outer sash whose rollers are guided by the roller receiving portions of the outer rails and can slide in the longitudinal direction of the lower frame;
An inner shoji screen whose rollers are guided by the roller receiving portions of the inner rails and can slide in the longitudinal direction of the lower frame;
A windbreak plate provided in the lower frame at a position below the joint between the outer and inner shoji screens in a fully closed state;
An airtight and watertight material is provided so as to straddle the roller receiving portion of the outer rail on the underside of the joint portion of the outer shoji;
A fixture having
The outer rail is formed by engaging an outdoor rail member including an outdoor sight wall with an indoor rail member including an indoor sight wall, forming a cavity therebetween,
The indoor rail member includes a first indoor rail member provided on the closing direction side of the outer screen and a second indoor rail member provided on the opening direction side,
The wind stopper is located between the first indoor rail member and the second indoor rail member, and abuts against the airtight and watertight material when the outer screen is fully closed. The exterior shoji screen has a sealing material that protrudes from the interior side of the two hanging pieces that straddle the exterior rail to the exterior side and abuts against the interior side visible wall of the wind stopper. The windbreak plate has a rising portion whose upper surface abuts against the airtight and watertight material,
The fixture according to claim 2, wherein the rising portion and the indoor rail member have indoor facing surfaces on the same plane. The outdoor rail member has a bent portion that protrudes from the outdoor sight wall toward the indoor side,
The fixture according to claim 1, wherein the windbreak plate is fixed to the outdoor rail member by a portion of the windbreak plate being inserted into a lower portion of the bent portion. The fixture according to claim 1, wherein the wind stopper is sandwiched in an elastically compressed state between the outdoor rail member of the outer rail and the inner rail. the first interior rail member is made of a resin material,
The fixture according to claim 1, wherein the second indoor rail member is made of aluminum. A sliding member is provided on the underside of the outer screen to straddle the outer rail and slide against the outer rail,
The fitting according to claim 1, wherein the airtight and watertight material is fixed to the sliding member. A screen rail provided on the outdoor side of the outer rail;
A screen door that is guided by the screen door rail and can slide in the longitudinal direction of the lower frame;
An insect-proof seal material provided on the indoor side of the vertical frame of the screen door;
a component mounting hole formed on the outdoor surface of the outdoor rail member at a position overlapping with the windbreak plate; and an insect-proof block fixed to the component mounting hole so as to abut against the insect-proof sealing material;
and
The fitting according to claim 1, wherein the windbreak plate separates the component mounting hole from the indoor space.