Fitting and airtight material

Abstract

To provide an airtight material capable of reducing a dimension in the width direction, securing airtight performance, and reducing light leakage or the like, and a fitting using the airtight material.SOLUTION: A door, which is a fitting, includes a fitting frame and a sash. A lower frame 20, which is at least one of the frames of the fitting frame, includes a frame depth surface portion 21 that faces a depth surface of the sash, a protruding portion 22 that protrudes from the frame depth surface portion 21 in a depth direction, and an airtight material 50 that is attached to the protruding portion 22. The airtight material 50 has a base portion 51 that is attached to the protruding portion 22 and an air tight portion 55 that is attached to the base portion 51. The tight portion 55 includes an extension piece portion 56 that extends from a base portion 51 toward the sash, and a main tight piece 57 and a sub-tight piece 58 that are branched from a distal end of the extension piece portion 56. The main tight piece 57 and the sub-tight piece 58 come into contact with the sash at positions away from each other in the inner / outer circumferential direction of the sash when the sash is closed.SELECTED DRAWING: Figure 6

Description

[Technical field]

[0001] The present invention relates to fittings such as entrance doors and back doors for buildings, and airtight materials used in such fittings. [Background technology]

[0002] A known door has a door frame and a door, and has AT material (airtight material) attached to the upper and lower frames and left and right vertical frames of the door frame, so that the AT material comes into contact with the door when it is closed, thereby improving its airtightness and watertightness (see, for example, Patent Document 1). The sill of Patent Document 1 comprises a sill projected surface located below the bottom surface of the door, and a rising portion that protrudes upward from this sill projected surface and is located on the interior side of the door. The AT material attached to the sill includes a fixing portion fixed to the rising portion of the sill, a hollow portion continuous with the fixing portion, a subtite piece that protrudes diagonally upward to the exterior from the upper end of the exterior surface of the hollow portion, and a maintite piece that protrudes diagonally downward to the exterior from a position on the exterior surface of the hollow portion below the subtite piece. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2017-14776 A Summary of the Invention [Problem to be solved by the invention]

[0004] In the AT material for the lower frame of Patent Document 1, in order to ensure a predetermined airtight performance by the main tight piece, it is necessary to ensure a predetermined dimension, for example, 7 mm or more, in the height dimension from the lower end of the interior surface of the door to the base end of the main tight piece, i.e., the overlapping allowance of the main tight piece. For this reason, in the AT material for the lower frame of Patent Document 1, in which the base end of the subtite piece is arranged higher than the main tight piece, the height dimension from the lower end of the interior surface of the door to the base end of the subtite piece, i.e., the dimension of the AT material in the visible direction of the lower frame, is larger than 7 mm, for example, about 11 mm. For this reason, the height dimension of the rising part of the lower frame that holds the AT material, i.e., the visible dimension, is also large, which poses the problem of a large step between the lower frame visible surface and the dirt floor on the indoor side of the lower frame. In addition, since the two tight pieces protrude independently from different positions in the vertical direction on the exterior surface of the hollow part of the AT material, there is a possibility that the sub-tight piece, which has a smaller protruding dimension than the main tight piece, will not be in sufficient contact with the interior surface of the door. In such a case, the airtightness performance may be reduced and light may leak. For this reason, there is a demand for airtight materials that can reduce the dimensions in the visible direction, ensure airtight performance, and reduce light leakage, and for fittings that use such airtight materials.

[0005] An object of the present invention is to provide an airtight material that can reduce the dimensions in the front direction, ensure airtight performance, and reduce light leakage, and a fixture using this airtight material. [Means for solving the problem]

[0006] The fitting of the present invention is a fitting comprising a fitting frame having an upper frame, a lower frame and left and right vertical frames, and a shoji screen that is attached to the fitting frame so as to be able to be opened and closed on either the outside or inside of the room, wherein at least one of the frames of the fitting frame comprises a frame projected surface portion facing the projected surface of the shoji screen, a protrusion portion protruding in the projected direction from the frame projected surface portion, and an airtight material attached to the protrusion portion, wherein the airtight material has a base portion attached to the protrusion portion and a tight portion extending from the base portion, wherein the tight portion comprises an extension piece portion extending from the base portion toward the shoji screen, and a main tight piece and a subtight piece branched off from the tip of the extension piece portion, and wherein when the shoji screen is closed, the main tight piece and the subtight piece abut against the shoji screen at positions spaced apart in the inner and outer periphery directions of the shoji screen.

[0007] The airtight material of the present invention is an airtight material that is attached to a door frame in which a shoji screen is attached so that it can be opened and closed on either the outside or inside of the room, and is characterized in that it has a base portion that is attached to the door frame and a tight portion extending from the base portion, and the tight portion comprises an extending piece portion that extends from the base portion toward the shoji screen, and a main tight piece and a sub-tight piece that are branched off from the tip of the extending piece portion and abut against the shoji screen at positions spaced apart in the inner and outer periphery directions when the shoji screen is closed. Effect of the Invention

[0008] According to the present invention, it is possible to provide an airtight material that can reduce the dimensions in the front direction, ensure airtight performance, and reduce light leakage, and a fixture using this airtight material. [Brief description of the drawings]

[0009] [Figure 1] FIG. 2 is an interior view showing a back door, which is a fixture according to the embodiment. [Diagram 2] FIG. 2 is a vertical cross-sectional view showing the back door of the embodiment. [Diagram 3] FIG. 2 is a cross-sectional view showing the back door of the embodiment. [Figure 4]FIG. 4 is a perspective view showing a corner portion of the door frame of the embodiment. [Diagram 5] FIG. 4 is an exploded perspective view showing a corner portion of the door frame according to the embodiment. [Figure 6] FIG. 2 is a diagram showing the airtight material of the embodiment. [Figure 7] FIG. 2 is a diagram showing the airtight material of the embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0010] Hereinafter, an embodiment of the present invention will be described with reference to the drawings. As shown in Figures 1 to 3, the back door (hereinafter referred to as door 1), which is a fixture of the present invention, is a so-called single-leaf door, and is composed of a door frame 2, which is a fixture frame fixed to an opening in the exterior wall of a building, and a door 8, which is a shoji screen supported by this door frame 2 so that it can be opened and closed. The door 1 of this embodiment is a door 1 for renovation, in which a new door frame 2 is arranged on the inner periphery of an existing door frame 2B, as shown in Figures 2 and 3. In each figure, hatching showing a cross section is omitted. In addition, in the airtight material 50, the hard resin part is shown with hatching, and the soft resin part is shown without hatching.

[0011] 1, the door 8 is a full glass type door that is configured by framing an upper frame 81, a lower frame 82, a vertical frame 83 on the hanging side, and a vertical frame 84 on the door end side, and holds a surface material such as glass 85. Note that the door 8 is not limited to a full glass type, and various types of doors for back door use can be used, such as doors with lift-up and down screens and those with various lattices.

[0012] [Door Frame] 2 and 3, the door frame 2 is fixed to the building's framework, which includes beams 91, a floor 92, and pillars 93 and 94, via an existing door frame 2B. The existing door frame 2B includes an existing upper frame 10B, an existing lower frame 20B, and existing vertical frames 30B and 40B. As shown in Figure 1, the door frame 2 has an upper frame 10, a lower frame 20, and left and right vertical frames 30, 40. Note that the vertical frame 30 located on the left side in the interior view of Figure 1 is the vertical frame on the hanging side, and the vertical frame 40 located on the right side of Figure 1 is the vertical frame on the door end side. As shown in Figure 3, a hinge 4 that connects the door 8 so that it can be opened and closed is attached to the vertical frame 30 on the hanging side. The hinge 4 is a general hinge such as a flag hinge. A lever handle 5 and a lock case are attached to the vertical frame 40 on the door end side.

[0013] 2, the upper frame 10 is made of an aluminum extrusion material having a hollow frame body 11 and a retaining piece 12 extending downward from the bottom surface of the frame body 11. A retaining groove that opens to the outside of the room is formed in the retaining groove, and an airtight material (AT material) 50 described later is engaged in this retaining groove. The upper frame 10 is fixed to the beams 91, which form the building's structural frame, with screws 15 via spacers 13 and the existing upper frame 10B.

[0014] 2, 4, and 5, the bottom frame 20 includes a frame projected surface portion (bottom frame projected surface portion) 21 that faces the lower surface, i.e., the projected surface, of the door 8, and a protrusion portion (bottom frame protrusion portion) 22 that protrudes upward (in the projected direction of the bottom frame 20) from the frame projected surface portion 21. Since the door 8 of this embodiment is opened and closed toward the outside of the room with respect to the door frame 2, the protrusion portion 22 protrudes toward the inside of the room with the door 8 in the closed position. A fixing piece 211 having a generally L-shaped cross section is formed on the underside of the frame projected surface portion 21, and a spacer 212 is disposed between the fixing piece 211 and the upper surface of the earthen floor 92. Then, a screw 215 is inserted through an opening formed in the frame projected surface portion 21 and screwed into the earthen floor 92 via the fixing piece 211 and the spacer 212, whereby the lower frame 20 is fixed to the earthen floor 92. The opening of the frame projected surface portion 21 is closed with a cap 26.

[0015] As shown in Figure 6, the protrusion 22 has an indoor facing surface portion 221 extending upward from the indoor side edge of the frame facing surface portion 21, a screw hole portion 222 extending upward from the frame facing surface portion 21 and located on the outdoor side of the indoor side facing surface portion 221 to define a screw hole, an outdoor side facing surface portion 223 extending upward from the screw hole portion 222 and located on the outdoor side of the indoor side facing surface portion 221, a facing surface portion 224 connecting the upper ends of the indoor side facing surface portion 221 and the outdoor side facing surface portion 223, an upper retaining piece 225 extending to the outdoor side from the inner circumferential end (upper end) of the outdoor side facing surface portion 223 and bent further downward, and a lower retaining piece 226 extending to the outdoor side from the screw hole portion 222 and bent further upward. A holding groove for holding the airtight material 50 described later is formed between the upper holding piece 225 and the lower holding piece 226. The upper surface of the upper holding piece 225 is at the same height as the upper surface of the projecting surface portion 224, that is, it is made flush. An opening is formed in the projection surface 224, and as shown in Fig. 2, a screw 25 is inserted from the opening and screwed into the floor 92 via the frame projection surface 21 and the existing lower frame 20B, thereby fixing the lower frame 20 to the floor 92. The opening of the projection surface 224 is closed with a cap 24.

[0016] 3, the vertical frame 30 on the hanging side, like the upper frame 10, is made of an aluminum extrusion material with a hollow frame body 31 and a retaining piece 32 extending inward from the inner peripheral projected surface of the frame body 31. A retaining groove that opens to the outside of the room is formed in the retaining piece 32, and an airtight material 61 is engaged in this retaining groove. The vertical frame 30 is fixed to a pillar 93, which is the building's structural body, with a screw 35 via a spacer 33 and an existing vertical frame 30B.

[0017] The vertical frame 40 on the door end side, like the top frame 10 and the vertical frame 30, is made of an aluminum extrusion material with a hollow frame body 41 and a retaining piece 42 that extends inward from the inner peripheral projected surface of the frame body 41. A retaining groove that opens to the outside of the room is formed in the retaining groove, and an airtight material 62 is engaged with this retaining groove. The vertical frame 40 is fixed to a pillar 94, which is the building's structural body, with screws 45 via a spacer 43 and an existing vertical frame 40B.

[0018] 4 and 5, a water-stopping sponge 70, which is a water-stopping material, is disposed between the lower end faces (small edges) of the airtight materials 61, 62 attached to the vertical frames 30, 40 and the upper surface of the airtight material 50 attached to the lower frame 20. The water-stopping sponge 70 is a sponge that uses ethylene-propylene rubber (EPDM) or the like, and is crushed and compressed between the lower end faces of the airtight materials 61, 62 and the upper surface of the airtight material 50 to prevent gaps from occurring between the airtight materials 61, 62 and the airtight material 50, and forms a continuous airtight and watertight line between the airtight materials 61, 62 and the airtight material 50.

[0019] 2 and 3, an existing frame 95 is provided on the indoor side of the existing upper frame 10B and the existing vertical frames 30B and 40B. An indoor covering material 100 that hides the existing upper frame 10B and the existing vertical frames 30B and 40B is attached to the inner periphery of the frame 95. An existing exterior wall material 96 is provided on the outdoor side of the beams 91 and the columns 93, 94. An exterior cover material 110 is attached to the outdoor surfaces of the upper frame 10 and the vertical frames 30, 40. The exterior cover material 110 is arranged across the outdoor surfaces of the upper frame 10 and the vertical frames 30, 40 and the exterior wall material 96 so that the existing upper frame 10B and the existing vertical frames 30B, 40B are not exposed to the outdoor side. As shown in FIG. 2, on the indoor side of the lower frame 20, on the upper surface of the earthen floor 92, a slope-shaped step-eliminating member 120 that reduces the step between the protruding portion 22 and the earthen floor 92 is fixed with screws 121.

[0020] [Airtight material] Next, the airtight material 50 attached to the protruding portion 22 of the lower frame 20 will be described with reference to Figures 6 and 7. The airtight material 50 attached to the upper frame 10 has the same configuration as the airtight material 50 of the lower frame 20, and therefore a description thereof will be omitted. Also, the airtight materials 61, 62 attached to the vertical frames 30, 40 are the same as those of the conventional ones, and therefore a description thereof will be omitted. The airtight material 50 has a base portion 51, a tight portion 55, and a lip portion 59. The base portion 51 includes an engagement portion 52 made of hard resin and a hollow portion 53 made of soft resin. The tight portion 55 and the lip portion 59 formed continuously with the hollow portion 53 are also made of soft resin. The airtight material 50 can be made of various hard and soft resins that are thermoplastic elastomers (TPE), such as hard PVC (polyvinyl chloride) and soft PVC. The engagement portion 52 comprises a plate portion 521 arranged along the outdoor side of the upper holding piece 225 and the lower holding piece 226, and an engagement piece 522 protruding from the plate portion 521 toward the indoor side and engaging with the upper holding piece 225 and the lower holding piece 226. The hollow forming portion 53 includes an inner peripheral surface portion 531 extending from the upper end of the plate portion 521 to the outside of the room, an outer peripheral surface portion 532 extending from the lower end of the plate portion 521 to the outside of the room, and an outer surface portion 533 connecting the inner peripheral surface portion 531 and the outer peripheral surface portion 532. The hollow forming portion 53 and the plate portion 521 form a hollow portion having a rectangular cross section.

[0021] The tight portion 55 includes an extension piece 56 extending from the base portion 51 to the outside of the room, and a main tight piece 57 and a sub-tight piece 58 branched off from the tip of the extension piece 56. The extension piece 56 extends from the corner where the inner peripheral surface 531 and the exterior surface 533 are joined. As shown in Figs. 5 and 6, the extension piece 56 is formed at an angle of about 10 degrees diagonally upward with respect to the inner peripheral surface 531 when the water-stopping sponge 70 is in a free state where it is not pressed against the inner peripheral surface 531. Also, as shown in Figs. 4 and 7, when the water-stopping sponge 70 is pressed and crushed by the lower end surfaces of the airtight materials 61 and 62, the upper surface of the hollow forming portion 53 and the upper surface of the extension piece 56 are in a horizontal plane, that is, in a state of being flush (flush). Also, the upper surface of the hollow forming portion 53 is provided at a position slightly higher than the upper surfaces of the projected surface 224 and the upper holding piece 225. However, since the difference in height between them is very small, about 0.5 mm, the upper surface of the hollow forming portion 53 and the upper surfaces of the projected surface 224 and the upper holding piece 225 can be considered to be almost flush. Further, a groove is formed on the underside of the base end of the extending piece 56 that is joined to the hollow forming portion 53, and the thickness dimension (height dimension) of the base end of the extending piece 56 is made smaller than the other parts of the extending piece 56. This groove allows the extending piece 56 to easily deform into the horizontal state shown in FIG.

[0022] The main tight piece 57 branches off from the tip of the extension piece 56 and extends diagonally downward. The main tight piece 57 is curved in an arc shape in cross section, and the tip of the main tight piece 57 extends downward at an angle of approximately 50 degrees with respect to the horizontal direction relative to the base end connected to the extension piece 56. As shown in Fig. 2, the main tight piece 57 extends so as to be positioned below the bottom surface of the door 8 when in a free state where it is not in contact with the door 8. As shown in Fig. 7, this main tight piece 57 is formed with a length that brings it close to the lip portion 59 when in contact with the interior surface of the bottom frame 82 of the door 8. A groove is also formed in the base end of the main tight piece 57, allowing it to easily deform downward when it comes into contact with the door 8.

[0023] The subtite piece 58 branches off from the tip of the extension piece 56 and extends obliquely upward. The tip of the subtite piece 58 extends upward at an angle of approximately 50 degrees from the horizontal direction relative to the base end connected to the extension piece 56. 6, the Subtite piece 58 is formed with a length such that when in a free state where it is not in contact with the door 8, the height position of its tip nearly coincides with the height position of the upper surface of the water-stopping sponge 70. A recess is also formed at the base end of the Subtite piece 58 between it and the maintite piece 57, so that when the Subtite piece 58 comes in contact with the door 8, it can easily deform in the upward direction.

[0024] In the airtight material 50 of this embodiment, the protruding dimension of the subtite piece 58, i.e., the length from the base end to the tip of the subtite piece 58 branched off from the extension piece 56, is set shorter than the extension dimension of the extension piece 56, i.e., the length from the base end connected to the base part 51 of the extension piece 56 to the tip from which the main tight piece 57 and the subtite piece 58 branch off. Also, the extension dimension of the extension piece 56 is set shorter than the protruding dimension of the main tight piece 57, i.e., the length from the base end to the tip of the main tight piece 57 branched off from the extension piece 56. The base end of the extension piece 56 is connected to the base piece 51 so as to be deformable, specifically by a concave groove, so as to be bendable. The base end of the main tight piece 57 is connected to the extension piece 56 and the subtite piece 58 so as to be deformable, specifically by two concave grooves, so as to be bendable. The base end of the subtite piece 58 is connected to the extension piece 56 and the main tight piece 57 so as to be deformable, specifically by a concave groove, so as to be bendable.

[0025] The lip portion 59 extends obliquely downward toward the outside of the room from the corner where the outer peripheral surface portion 532 and the exterior surface portion 533 are joined. The lip portion 59 extends such that the tip of the lip portion 59 faces downward at an angle of approximately 20 degrees with respect to the horizontal direction with respect to the base end portion connected to the hollow forming portion 53.

[0026] [Effects of the embodiment] According to the door 1 of this embodiment, the airtight material 50 has the main tight piece 57 and the sub tight piece 58 branched off from the extension piece 56, so the dimension of the airtight material 50 in the visible direction can be made smaller than when each tight piece is provided independently from the base part 51. This reduces the restrictions on attaching the airtight material 50 to the frame, and allows it to be attached to the frames of various building materials. When the door 8 is closed and the main tight piece 57 abuts against the indoor surface of the bottom frame 82 of the door 8, the main tight piece 57 is pushed toward the indoor side and deforms downward, so that the tip side of the extension piece 56 connected to the main tight piece 57 deforms downward, and the tip side of the subtite piece 58 moves to the outdoor side, i.e., toward the door 8. This allows the main tight piece 57 and the subtite piece 58 to abut against the door 8 reliably. In other words, because the main tight piece 57 and the subtite piece 58 are branched off from the extension piece 56, when the main tight piece 57 abuts against the door 8, it acts to move the subtite piece 58 to the outdoor side, i.e., in the direction of abutting against the door 8, and the main tight piece 57 and the subtite piece 58 work together to allow the subtite piece 58 to abut against the door 8 reliably. As a result, the main tight piece 57 abuts against the lower end side of the interior surface of the lower frame 82, and the sub-tight piece 58 abuts against the interior surface of the lower frame 82 at a position higher than the main tight piece 57, i.e., on the inner circumference side, thereby forming a double tight line, improving the airtight performance of the airtight material 50 and reducing light leakage from between the door frame 2 and the door 8.

[0027] The main tight piece 57 is designed so that when it is free, its tip is on the outer periphery side of the projected surface of the door 8, i.e., on the frame projected surface portion 21 side. Therefore, even if the door frame 2 is deformed, for example, into a barrel shape or parallelogram when viewed from the inside of the room due to construction errors when attaching the door frame 2 to the main body side (beams 91, floor 92, pillars 93, 94) and the door 8 moves upward relative to the sill 20, the main tight piece 57 can be allowed to overlap the door 8 with a specified dimension, ensuring sealing performance and improving construction followability.

[0028] A water-stopping sponge 70 is arranged at the joint between the airtight material 50 of the lower frame 20 and the airtight materials 61, 62 of the vertical frames 30, 40, so that water can be prevented from entering through the joint between the airtight material 50 and the airtight materials 61, 62, improving the water-stopping performance.

[0029] When the main tight piece 57 abuts against the door 8, as shown in Fig. 7, a space surrounded on three sides by the extension piece 56, the main tight piece 57, and the exterior surface 533 can be formed, so that the inflow of outside air can be suppressed and the heat insulating performance of the airtight material 50 can be improved. Furthermore, since the airtight material 50 has a lip portion 59, when the main tight piece 57 abuts against the door 8, the tip of the main tight piece 57 approaches the lip portion 59, so that the area of ​​the outside air communication part of the space surrounded by the extension piece 56, the main tight piece 57, and the exterior surface 533 becomes smaller, and a space into which outside air is more difficult to inflow can be formed. Therefore, in the airtight material 50, in addition to the hollow portion defined by the hollow forming portion 53 and the engagement portion 52, a space that can be considered as a hollow portion is formed on the exterior side thereof, so that the heat insulating performance can be improved.

[0030] Since the airtight material 50 is attached to the protruding portion 22 of the sill 20, the height dimension of the protruding portion 22 can also be reduced. Therefore, the step between the existing sill 20B or the earthen floor 92 and the sill 20 can be reduced, making it possible to provide the door 1 with easy access.

[0031] [Variations] The fittings of the present invention are not limited to the back door of the above embodiment, but may be front doors for use in apartments, etc. Also, they are not limited to front doors or back doors, but may be windows such as outward opening windows or inward opening windows with a sliding screen that opens and closes to the outside or inside of the window frame, sliding windows using sliding hinges, or stepped windows or continuous windows that combine multiple windows. The fixtures are not limited to fixtures for renovation that are attached to the inner circumference of the existing door frame 2B, but may also be newly installed front doors, back doors, various types of windows, etc., as long as the shoji (door) can be opened and closed in the forward direction relative to the fixture frame.

[0032] If the left and right ends of the seal portion 55 sag when the door 1 is installed, end support members 75 made of sponge or the like may be placed in the space surrounded by the exterior surface portion 533, the extension piece portion 56, and the main seal piece 57 at the left and right ends of the airtight material 50, as shown by the two-dot chain line in Fig. 6. That is, the left and right ends of the airtight material 50 are pressed downward by the airtight materials 61, 62 and the water-stopping sponge 70 attached to the vertical frames 30, 40, so that the left and right ends of the seal portion 55 may sag more than necessary. In this case, by supporting the lower surface of the extension piece portion 56 with the end support members 75, the sagging of the left and right ends of the seal portion 55 can be improved, and the seal portion 55 can be brought into close contact with the water-stopping sponge 70 to improve the sealing performance.

[0033] In the above embodiment, the airtight material 50 having the branched main tight piece 57 and subtite piece 58 is attached to the lower frame 20 and the upper frame 10, but it may be attached to the vertical frames 30, 40. That is, the airtight material 50 may be attached to one or more of the upper frame 10, the lower frame 20, and the vertical frames 30, 40 that constitute the door frame 2. Since the dimensions of the airtight material 50 in the direction perpendicular to the longitudinal direction and the projection direction, that is, the dimensions of the frame to which the airtight material 50 is attached in the projection direction (inner and outer periphery directions of the fixture), can be reduced, a frame with a small projection dimension can be used, airtight performance can be ensured, light leakage can be reduced, and design can be improved.

[0034] The configuration of the airtight material is not limited to the airtight material 50 of the above embodiment. For example, the airtight material may not have a lip portion 59, and the base portion 51 may not have a hollow portion. In other words, the airtight material may have a main tight piece 57 and a subtight piece 58 branched off from the extension piece portion 56.

[0035] [Summary of the invention] The fitting of the present invention is a fitting comprising a fitting frame having an upper frame, a lower frame and left and right vertical frames, and a shoji screen that is attached to the fitting frame so as to be able to be opened and closed on either the outside or inside of the room, wherein at least one of the frames of the fitting frame comprises a frame projected surface portion facing the projected surface of the shoji screen, a protrusion portion protruding in the projected direction from the frame projected surface portion, and an airtight material attached to the protrusion portion, wherein the airtight material has a base portion attached to the protrusion portion and a tight portion extending from the base portion, wherein the tight portion comprises an extension piece portion extending from the base portion toward the shoji screen, and a main tight piece and a subtight piece branched off from the tip of the extension piece portion, and wherein when the shoji screen is closed, the main tight piece and the subtight piece abut against the shoji screen at positions spaced apart in the inner and outer periphery directions of the shoji screen. According to the fitting of the present invention, two pieces, a main piece and a sub piece, are provided in the airtight material, and each piece is provided by branching off from a single extension piece, so that the dimension of the airtight material in the viewing direction can be made smaller than when each piece is provided independently from the base, and each piece can be reliably abutted against the shoji screen. Also, because each piece is abutted against the shoji screen at a position separated in the inner and outer periphery directions, the main piece and the sub piece form a double tight line on the outer and inner periphery of the shoji screen, improving the airtight performance of the airtight material and reducing light leakage from between the fitting frame and the shoji screen.

[0036] In the building fixture of the present invention, it is preferable that the base portion has an inner surface portion that is continuous with the extension piece portion, and the protrusion portion has a projecting surface portion that is approximately flush with the inner surface portion. According to the present invention, the inner surface of the base part of the airtight material and the projected surface of the protrusion to which the airtight material is attached are made to be approximately flush with each other, thereby eliminating any steps that would be an obstacle when opening the shoji screen to enter or exit.

[0037] In the building fixture of the present invention, it is preferable that the tip of the main tight piece is located on the outer periphery side of the projecting surface of the shoji screen. According to the present invention, even if the distance between the frame projected surface of the frame to which the airtight material is attached and the projected surface of the shoji screen varies in the longitudinal direction of the frame due to deformation of the frame during construction, the main tight piece can be reliably abutted against the shoji screen by locating the tip of the main tight piece on the outer periphery, i.e., on the frame projected surface side, of the projected surface of the shoji screen, and the overlapping area of ​​the main tight piece can be secured, ensuring airtightness and watertightness without being affected by construction errors.

[0038] In the fitting of the present invention, it is preferable that a water-stopping material is disposed at the joint between the airtight material attached to the bottom frame of the fitting frame and the airtight material attached to the vertical frame of the fitting frame. According to the present invention, a water-stopping material such as a sponge is provided at the joint between the airtight material of the lower frame and the airtight material of the vertical frame, thereby preventing water from entering between the airtight materials and improving the water-stopping performance.

[0039] In the building fixture of the present invention, it is preferable that the airtight material has a space surrounded on three sides by the base portion, the extension piece portion, and the main tight piece. According to the present invention, the airtight material is provided with a space surrounded on three sides by the base part, the extension piece, and the main airtight piece, so that an end support member can be placed to prevent the airtight part from sagging. Furthermore, because this space is surrounded on three sides, it is possible to suppress the inflow of outside air and to use it as an insulating space, which contributes to improving the insulating performance of the building material.

[0040] In the fittings of the present invention, the fitting frame is a door frame, the shoji screen is a door that is opened and closed toward the outside of the room relative to the door frame, the bottom frame of the door frame comprises a bottom frame projected surface portion that faces the bottom surface of the door, and a bottom frame protruding portion that protrudes in the visible direction from the bottom frame projected surface portion, and the tight portion comprises the extension piece portion that extends from the base portion toward the shoji screen, the main tight piece branching off from the tip of the extension piece portion and extending diagonally downward toward the outside of the room, and the subtight piece branching off from the tip of the extension piece portion and extending diagonally upward toward the outside of the room, and it is preferable that when the shoji screen is closed, the main tight piece and the subtight piece abut against the indoor surface of the shoji screen at positions spaced apart in the vertical direction. According to the present invention, since the airtight material with a small visible dimension is provided on the bottom frame of the door frame, the visible dimension (height dimension) of the bottom frame protrusion can also be made small. Therefore, when opening the door and entering or exiting the door, the step of the bottom frame is small, making it possible to enter or exit smoothly.

[0041] The airtight material of the present invention is an airtight material that is attached to a door frame in which a shoji screen is attached so that it can be opened and closed on either the outside or inside of the room, and is characterized in that it has a base portion that is attached to the door frame and a tight portion extending from the base portion, and the tight portion comprises an extending piece portion that extends from the base portion toward the shoji screen, and a main tight piece and a sub-tight piece that are branched off from the tip of the extending piece portion and abut against the shoji screen at positions spaced apart in the inner and outer periphery directions when the shoji screen is closed. According to the airtight material of the present invention, two pieces, a main piece and a sub piece, are provided in the airtight section, and each piece is provided by branching off from a single extension section, so that the dimension of the airtight material in the viewing direction can be made smaller than when each piece is provided independently from the base section, and each piece can be reliably abutted against the shoji screen. Also, each piece can be abutted against the shoji screen at positions spaced apart in the inner and outer periphery directions, and the main piece and the sub piece can form double tight lines on the outer and inner periphery of the shoji screen, improving the airtight performance of the airtight material and reducing light leakage from between the fitting frame and the shoji screen. [Explanation of symbols]

[0042] 1...door, 2...door frame, 8...door, 10...upper frame, 20...lower frame, 21...frame projected surface portion, 22...protruding portion, 30...vertical frame, 40...vertical frame, 50...airtight material, 51...base portion, 52...engagement portion, 53...hollow forming portion, 55...tight portion, 56...extension piece portion, 57...main tight piece, 58...subtight piece, 59...lip portion, 70...water-stopping sponge, 75...end support member, 224...projected surface portion, 531...inner surface portion.

Claims

1. A fitting frame having an upper frame, a lower frame, and left and right vertical frames; A door that is attached to the door frame so as to be openable and closable on either the outside or inside of the door frame. At least one of the frames of the fittings is A frame projection surface portion facing the projection surface of the shoji screen; A protruding portion protruding in a prospective direction from the frame prospective surface portion; An airtight material attached to the protruding portion, The airtight material has a base portion attached to the protrusion and a tight portion extending from the base portion, The tight portion includes an extension piece portion extending from the base portion toward the shoji side, and a main tight piece and a sub-tight piece branched from a tip of the extension piece portion, When the door is closed, the main tight piece and the sub tight piece abut against the door at positions spaced apart from each other in the inner and outer periphery directions of the door. A fixture characterized by:

2. In the fitting according to claim 1, The base portion has an inner circumferential surface portion provided continuously with the extension piece portion, The protrusion has a projection surface that is substantially flush with the inner peripheral surface. A fixture characterized by:

3. In the fitting according to claim 1, The tip of the main tight piece is located on the outer periphery side of the projected surface of the screen. A fixture characterized by:

4. In the fitting according to claim 1, A water-stopping material is disposed at the joint between the airtight material attached to the bottom frame of the door frame and the airtight material attached to the vertical frame of the door frame. A fixture characterized by:

5. In the fitting according to claim 1, The airtight material has a space surrounded on three sides by the base portion, the extension piece portion, and the main tight piece. A fixture characterized by:

6. In the fitting according to claim 1, The fixture frame is a door frame, The shoji screen is a door that opens and closes toward the outside of the room relative to the door frame, The bottom frame of the door frame is A lower frame projection surface portion facing the lower surface of the door; A lower frame protruding portion protruding in a prospective direction from the lower frame prospective surface portion, The tight portion includes the extension piece portion extending from the base portion toward the shoji side, the main tight piece branching off from the tip of the extension piece portion and extending obliquely downward toward the outside of the room, and the sub-tight piece branching off from the tip of the extension piece portion and extending obliquely upward toward the outside of the room, When the door is closed, the main tight piece and the sub tight piece abut against the interior surface of the door at positions spaced apart in the vertical direction. A fixture characterized by:

7. An airtight material that is attached to a door frame to which a shoji screen is attached so as to be openable and closable on either the outside or inside of the room, A base portion attached to the door frame; a tight portion extending from the base portion, The tight portion is An extension piece portion extending from the base portion to the shoji side; A main tight piece and a sub tight piece are branched from the tip of the extension piece portion and are brought into contact with the screen at positions spaced apart in the inner and outer periphery directions of the screen when the screen is closed. An airtight material characterized by:

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