Ventilation frames and fittings

Abstract

To improve fireproof performance of a ventilation rail used for an intermediate rail of a sash of a fixture while ensuring drainage performance of the ventilation rail.SOLUTION: A ventilation rail 5 comprises: a first hollow part 6 having a ventilation passage 6A; a second hollow part 7 positioned below the first hollow part 6; a partition wall part 8 positioned between the first hollow part 6 and the second hollow part 7; a first exhaust port 71 which is provided in the partition wall part 8 and through which water is discharged from the first hollow part 6 toward the second hollow part 7; and a second exhaust port 72 which is provided in a lower wall part 9 of the second hollow part 7 positioned below the first exhaust port 71 so as to be shifted from the first exhaust port 71 in an indoor outer direction S and through which the water is discharged from the second hollow part 7 downward.SELECTED DRAWING: Figure 10

Description

[Technical Field]

[0001] The present invention relates to a ventilation frame used in the horizontal frame of a shoji screen in a building fixture, and to a building fixture equipped with a shoji screen having a ventilation frame. [Background technology]

[0002] Ventilation frames are sometimes used as the horizontal frames of shoji screens, which are building materials. The ventilation frames are incorporated into the frame body of the shoji screen and ventilate between the space outside the shoji screen and the space inside the screen. Conventionally, a ventilation device used as a ventilation frame in the upper frame of a shoji screen is known (see Patent Document 1).

[0003] In the conventional ventilation device described in Patent Document 1, the device body extending in the left-right direction has a ventilation passageway that connects the indoors and outdoors via a vent. However, in a ventilation frame with a ventilation passageway like the conventional ventilation device, water (e.g., rainwater) can enter the ventilation passageway through the vent. To address this, for example, providing a drainage outlet in the ventilation frame makes it possible to drain water from the ventilation passageway. However, in this case, in addition to the drainage performance of the ventilation frame, it is also necessary to consider the intrusion of flames into the drainage outlet from the perspective of the ventilation frame's fire prevention performance. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Publication No. 2019-128104 Summary of the Invention [Problem to be solved by the invention]

[0005] The present invention has been made in consideration of the above-mentioned conventional problems, and its purpose is to improve the fire prevention performance of ventilation frames used in the horizontal frames of shoji screens in building materials while ensuring the drainage performance of the ventilation frames. [Means for solving the problem]

[0006] The present invention is a ventilation frame used for the horizontal frame of a shoji door of a building material, a first hollow portion having a ventilation passage; a second hollow portion located below the first hollow portion; a partition wall portion located between the first hollow portion and the second hollow portion; a first drain port provided in the partition wall portion for draining water from the first hollow portion toward the second hollow portion; a second drain outlet provided in a lower wall portion of the second hollow portion located below the first drain outlet, the second drain outlet being shifted in the indoor / outdoor direction from the first drain outlet and draining water downward from the second hollow portion; It is a ventilation frame equipped with. The present invention also relates to a fitting including a shoji screen having the ventilation frame of the present invention. [Effects of the Invention]

[0007] According to the present invention, it is possible to improve the fire prevention performance of ventilation frames used in the horizontal frames of shoji screens in building materials while ensuring the drainage performance of the ventilation frames. [Brief explanation of the drawings]

[0008] [Figure 1] FIG. 2 is a front view showing the fitting of the present embodiment. [Figure 2] FIG. 2 is a vertical cross-sectional view showing the fitting of the present embodiment. [Figure 3] FIG. 2 is a cross-sectional view showing the fitting of the present embodiment. [Figure 4] This is a cross-sectional view of the ventilation frame and a pair of vertical frames of the first shoji screen of this embodiment. [Figure 5] FIG. 2 is a front view showing the upper part of the first shoji screen of this embodiment as viewed from the outside of the room. [Figure 6] FIG. 2 is a front view showing the upper part of the first shoji screen of this embodiment as seen from inside the room. [Figure 7] FIG. 7 is a vertical cross-sectional view of the first shoji screen of the present embodiment taken along line XX in FIG. 6. [Figure 8] FIG. 2 is a vertical cross-sectional view showing a first shoji screen according to the present embodiment. [Figure 9] This is a bottom view of the ventilation frame of this embodiment seen from below. [Figure 10] FIG. 2 is a vertical cross-sectional view showing a first shoji screen according to the present embodiment. [Figure 11] FIG. 10 is a vertical cross-sectional view showing the state in which the third heat-foaming material of the ventilation frame of this embodiment has foamed. [Figure 12] FIG. 10 is a vertical cross-sectional view showing the state in which the third heat-foaming material of the ventilation frame of this embodiment has foamed. DETAILED DESCRIPTION OF THE INVENTION

[0009] An embodiment of the ventilation frame and fittings of the present invention will be described with reference to the drawings. The ventilation frame of this embodiment is used as the horizontal frame of a shoji screen of a building fixture, and ventilates between the space outside the ventilation frame and the shoji screen and the space inside the room. The building fixture of this embodiment is equipped with a shoji screen having the ventilation frame of this embodiment, and is installed on the wall of a building. In the wall of the building, the building fixture and ventilation frame are arranged between the interior (indoors) and exterior (outdoors) of the building. Below, the ventilation frame and building fixture of this embodiment will be explained using the example of a case where the ventilation frame is used as the upper frame, which is the horizontal frame of a shoji screen.

[0010] Fig. 1 is a front view of the fitting 1 of this embodiment, showing the fitting 1 as seen from the inside of the room. Fig. 2 is a vertical cross-sectional view of the fitting 1 of this embodiment, and Fig. 3 is a horizontal cross-sectional view of the fitting 1 of this embodiment. As shown in the figure, the fitting 1 is a sliding window installed in an opening of a building, and comprises two sliding shoji screens 2 and 3 (first shoji screen 2 and second shoji screen 3), a screen door 4, and a frame 10 that surrounds the shoji screens 2 and 3 and the screen door 4. The first shoji screen 2 is an interior shoji screen (inner shoji screen) located on the inside of the room, and the second shoji screen 3 is an exterior shoji screen (outer shoji screen) located on the outside of the room. The screen door 4 slides left and right in the R direction on the outside of the shoji screens 2 and 3.

[0011] When the fitting 1 and ventilation frame 5 installed in a building are viewed from the front (see Figure 1), the up-down direction is the up-down direction, and the left-right direction is the left-right direction R. In Figure 1, the up-down direction is the vertical direction, and the left-right direction R is the horizontal direction. The indoor-outdoor direction S (see Figures 2 and 3) is the indoor-outdoor direction (indoor-outdoor direction) of the fitting 1 and ventilation frame 5 installed in a building. Furthermore, the indoor-outdoor direction S is the front-to-back direction (depth direction) when the fitting 1 and ventilation frame 5 installed in a building are viewed from the front, and in Figure 1, it is the horizontal direction perpendicular to the left-to-right direction R. In this way, the directions related to the fitting 1 and ventilation frame 5 are specified by the directions when they are installed in the building. Furthermore, the indoor side and the outdoor side of the fitting 1 and ventilation frame 5 are the indoor side and the outdoor side in the indoor-outdoor direction S when they are installed in the building.

[0012] The frame body 10 is a rectangular opening frame (window frame) and is installed in an opening in a building. The frame body 10 has four frames 11 to 13 (an upper frame 11, a lower frame 12, and a pair of vertical frames 13) that are combined with each other, and the four frames 11 to 13 form a rectangular opening 14. The upper frame 11 and the lower frame 12 are upper and lower horizontal frames of the frame body 10, and extend in the left-right direction R (horizontal direction) at the top and bottom of the frame body 10. The pair of vertical frames 13 are side frames located on the left and right sides of the frame body 10, and extend in the up-down direction (vertical direction) at the sides of the frame body 10. The ends of the upper frame 11, the lower frame 12, and the left and right vertical frames 13 are connected to form a frame of the frames 11 to 13.

[0013] The shoji screens 2 and 3 are movable sliding screens (panel bodies) that move by sliding, and are arranged to be movable (slidable) within the opening 14 of the frame body 10. The shoji screens 2 and 3 each have a rectangular frame body 20 and 30, and a panel 2A or 3A fixed to the inside of the frame body 20 or 30. The shoji screens 2 and 3 slide in the left-right direction R within the opening 14 of the frame body 10 in a double sliding manner. The movement of the shoji screens 2 and 3 opens and closes the opening 14 of the frame body 10. When the shoji screens 2 and 3 are closed, they are locked by a locking device 40. The locking device 40 is a crescent having a crescent lock and a crescent receiver, and is attached to the frame body 20 and 30 of the shoji screens 2 and 3, respectively.

[0014] The frames 20, 30 of the shoji screens 2, 3 each have four frames 21-23, 31-33 (upper frame 21, 31, lower frame 22, 32, pair of vertical frames 23, 33) that are combined with each other, and the four frames 21-23, 31-33 form rectangular openings 24, 34. The panels 2A, 3A of the shoji screens 2, 3 are rectangular glass panels (double glazing in this case), and are placed in the openings 24, 34 of the frames 20, 30, respectively, and fitted into the frames 20, 30. The frames 21-23, 31-33 are made of shaped members formed by extrusion molding, for example. The upper frames 21, 31 and the lower frames 22, 32 are horizontal frames at the top and bottom of the frames 20, 30, and extend in the left-right direction R (horizontal direction) at the top and bottom of the frames 20, 30.

[0015] The pair of vertical frames 23, 33 are side frames located on the left and right sides of the frame bodies 20, 30, and extend in the up-and-down direction (vertical direction) on the left and right sides of the frame bodies 20, 30. Of the pair of vertical frames 23, 33, one vertical frame 23, 33 is a door end frame, and the other vertical frame 23, 33 is a door joint frame. The ends of the upper frames 21, 31, the lower frames 22, 32, and the left and right vertical frames 23, 33 are connected to each other to form a frame for the frames 21-23, 31-33. Here, a ventilation frame 5 is provided on the first frame 2, one of the two shoji screens 2, 3. The ventilation frame 5 is the upper frame 21 of the first shoji screen 2, and is provided on the frame body 20 of the first shoji screen 2 and extends in the left-right direction R along the upper edge of the first shoji screen 2.

[0016] Fig. 4 is a cross-sectional view of the ventilation frame 5 (upper frame 21) and a pair of vertical frames 23 of the first shoji screen 2 of this embodiment, omitting the internal structure of the ventilation frame 5 and vertical frames 23. Fig. 5 is a front view showing the upper part of the first shoji screen 2 of this embodiment as seen from the outside of the room, and Fig. 6 is a front view showing the upper part of the first shoji screen 2 of this embodiment as seen from the inside of the room.

[0017] As shown in the figure, the ventilation frame 5 has an exterior facing portion 5A located on the exterior side, an interior facing portion 5B located on the interior side, multiple exterior vents 5C located on the exterior side, multiple interior vents 5D located on the interior side, and a filter 5E. The exterior facing portion 5A is the exterior facing portion of the ventilation frame 5 that faces the outdoor space, and the indoor facing portion 5B is the interior facing portion of the ventilation frame 5 that faces the indoor space. The exterior vents 5C and the indoor vents 5D are each long through holes (vents) that extend vertically and open toward the interior of the ventilation frame 5 (internal space).

[0018] The multiple outdoor air vents 5C are formed at intervals along the length of the ventilation frame 5 (left-right direction R) and open from the outdoor facing part 5A of the ventilation frame 5 toward the space outside the ventilation frame 5. The multiple indoor air vents 5D are formed at intervals along the length of the ventilation frame 5 and open from the indoor facing part 5B of the ventilation frame 5 toward the space inside the ventilation frame 5. Air passes through and circulates inside and outside the ventilation frame 5 via the outdoor air vents 5C and the indoor air vents 5D. The filter 5E is positioned on the outdoor side of the indoor facing part 5B (inside the ventilation frame 5), extends in the length of the ventilation frame 5, and filters the air passing through the indoor air vents 5D.

[0019] FIG. 7 is a vertical cross-sectional view of the first shoji screen 2 of this embodiment taken along line XX in FIG. 6, and shows a schematic diagram of the internal structure of the ventilation frame 5. As shown in FIG. As shown in Figures 6 and 7, the ventilation frame 5 has two screw hole members 42 fixed to the inside by screws 41. The screw hole members 42 each have a screw hole 43 and are fixed to both longitudinal ends of the ventilation frame 5. The screw hole members 42 are screw receiving members that receive screws 44, and the screw holes 43 are tapping holes into which the screws 44 thread. The screws 44 are mounting screws that attach the vertical frame 23 of the first shoji screen 2 to the ventilation frame 5 at both longitudinal ends of the ventilation frame 5.

[0020] The screw hole members 42 and screw holes 43 extend in the longitudinal direction of the ventilation frame 5 from the end face in the longitudinal direction of the ventilation frame 5 toward the interior of the ventilation frame 5. The screw holes 43 have openings 45 arranged facing downward, and are open downward by the openings 45. The screws 44 are inserted into insertion holes (not shown) formed in the mounting wall portions 25 of each of the pair of vertical frames 23. The screws 44 are threaded into the screw holes 43 while cutting threads into the inner surfaces of the screw holes 43. As a result, the screws 44 are threaded into the screw holes 43 and fixed to the screw holes 43 and the screw hole members 42. The screws 44 bring the mounting wall portions 25 of the vertical frames 23 into close contact with the end face of the ventilation frame 5, and attach the end (here, the upper end) of the vertical frame 23 to the screw hole members 42 and the end of the ventilation frame 5.

[0021] FIG. 8 is a vertical cross-sectional view showing the first shoji screen 2 of this embodiment, and compared to the vertical cross-sectional view of the first shoji screen 2 shown in FIG. 7, part of the internal structure of the ventilation frame 5 including the screw hole member 42 is omitted. As shown in the figure, the ventilation frame 5 has two hollow sections 6, 7 (first hollow section 6 and second hollow section 7) separated vertically, a partition section 8 located between the first hollow section 6 and the second hollow section 7, and a lower wall section 9 located between the second hollow section 7 and the opening 24 of the frame body 20.

[0022] The first hollow section 6 and the second hollow section 7 are adjacent to each other in the vertical direction, with a partition wall 8 sandwiched between them. The partition wall 8 is a partition wall (partition wall) that separates the first hollow section 6 and the second hollow section 7, and divides the interior of the ventilation frame 5 into upper and lower sections, separating the first hollow section 6 and the second hollow section 7 in the vertical direction. The first hollow section 6 is an upper hollow section located above the second hollow section 7 and the partition wall 8, and is defined above the partition wall 8. The second hollow section 7 is a lower hollow section located below the first hollow section 6 and the partition wall 8, and is defined below the partition wall 8.

[0023] The partition wall 8 is a lower part of the first hollow section 6 and an upper part of the second hollow section 7. The partition wall 8 separates the interior (internal space) of the first hollow section 6 from the interior (internal space) of the second hollow section 7 in the vertical direction, separating the first hollow section 6 from the second hollow section 7. The partition wall 8 and the lower wall section 9 are arranged facing each other and spaced apart in the vertical direction. The lower wall section 9 is a lower part of the second hollow section 7, and is located below the first hollow section 6 and the partition wall 8, along the indoor-outdoor direction S. The second hollow section 7 is defined between the partition wall 8 and the lower wall section 9.

[0024] The first hollow section 6 of the ventilation frame 5 is a ventilation hollow section used for ventilation, and has a ventilation passage 6A that can be opened toward the outdoor side and the indoor side of the ventilation frame 5. The ventilation passage 6A is the internal space of the first hollow section 6, and is provided inside the first hollow section 6, between the outdoor air vent 5C and the indoor air vent 5D. The outdoor air vent 5C and the indoor air vent 5D are open toward the inside of the first hollow section 6 and the ventilation passage 6A, and are also open toward the outdoor space and the indoor space of the ventilation frame 5 (first hollow section 6 and ventilation passage 6A).

[0025] The ventilation frame 5 ventilates between the space on the outdoor side of the ventilation frame 5 and the first shoji screen 2 and the space on the indoor side through the ventilation passage 6A of the first hollow portion 6. Air flows between the space on the outdoor side of the ventilation frame 5 and the space on the indoor side through the outdoor vent 5C, the ventilation passage 6A, and the indoor vent 5D. Air also flows from the space on the outdoor side of the ventilation frame 5 to the space on the indoor side through the outdoor vent 5C, the ventilation passage 6A, and the indoor vent 5D, and also flows from the space on the indoor side of the ventilation frame 5 to the outdoor space.

[0026] The ventilation frame 5 is equipped with an opening / closing mechanism 50 that opens and closes the ventilation passage 6A (see FIG. 7). The opening / closing mechanism 50 has an opening / closing member 51 that opens and closes the outdoor air vent 5C, an operating member 52 that operates the opening / closing member 51, and a connecting member 53 that connects the operating member 52 to the opening / closing member 51. The opening / closing member 51 and the connecting member 53 are arranged in the ventilation passage 6A inside the first hollow portion 6, and the operating member 52 is slidably arranged on the indoor-side facing portion 5B of the ventilation frame 5 (see FIG. 6). By moving the operating member 52 in one direction or the other along the length of the ventilation frame 5, the connecting member 53 and the opening / closing member 51 move in one direction or the other along the length of the ventilation frame 5. The opening / closing member 51 has a plurality of openings 54 formed at intervals along the length of the ventilation frame 5.

[0027] When the opening / closing member 51 is moved by the operating member 52 to a position where the opening 54 of the opening / closing member 51 overlaps with the outdoor air vent 5C, the opening 54 opens the outdoor air vent 5C and the ventilation passage 6A opens. Also, when the opening / closing member 51 is moved by the operating member 52 to a position where the opening 54 of the opening / closing member 51 does not overlap with the outdoor air vent 5C, the opening / closing member 51 closes the outdoor air vent 5C and the ventilation passage 6A closes. In this way, the opening / closing mechanism 50 is operated by the operating member 52 to open and close the ventilation passage 6A.

[0028] FIG. 9 is a bottom view of the ventilation frame 5 of this embodiment as seen from below. As shown in FIGS. 7 and 9, the ventilation frame 5 is provided with a plurality of heat-foaming materials 61-64 (first heat-foaming material 61, second heat-foaming material 62, third heat-foaming material 63, and fourth heat-foaming material 64). The heat-foaming materials 61-64 are thermally expandable fire-resistant materials (e.g., expandable graphite) that foam and expand when heated by heat such as a fire. The heat-foaming materials 61-64 extend in the longitudinal direction of the ventilation frame 5, are attached to various parts of the ventilation frame 5, and are attached to various parts of the ventilation frame 5. The first heat-foaming material 61, third heat-foaming material 63, and fourth heat-foaming material 64 are provided in various parts of the ventilation frame 5, extending over the entire longitudinal direction of the ventilation frame 5.

[0029] The first heated foaming material 61 is provided in the upper groove 5F of the ventilation frame 5 and expands within the upper groove 5F. The second heated foaming material 62 and the third heated foaming material 63 are provided inside the first hollow portion 6 and expand inside the first hollow portion 6. The second heated foaming material 62 is located on the outdoor side of the screw hole member 42 and attached to the screw hole member 42, and expands on the outdoor side of the screw hole member 42. The third heated foaming material 63 is provided above the partition wall portion 8 and attached to the partition wall portion 8, and expands above the partition wall portion 8. The fourth heated foaming material 64 is provided below the second hollow portion 7 and the lower wall portion 9 and attached to the lower wall portion 9, and expands between the ventilation frame 5 (lower wall portion 9) and the panel 2A.

[0030] FIG. 10 is a vertical cross-sectional view showing the first shoji screen 2 of this embodiment, in which the main parts of the opening and closing mechanism 50 are omitted from the vertical cross-sectional view of the first shoji screen 2 shown in FIG. As shown in the figure, water (e.g., rainwater) may enter the ventilation passage 6A inside the first hollow portion 6 through the outdoor vent 5C of the ventilation frame 5. In this case, the water is drained through the drainage path 70 of the ventilation frame 5, downward toward the outside of the ventilation frame 5. The second hollow portion 7 of the ventilation frame 5 is a drainage hollow portion used for drainage, and is located in the drainage path 70.

[0031] The ventilation frame 5 is provided with two drainage openings 71, 72 (first drainage opening 71, second drainage opening 72) located in the drainage path 70. The first drainage opening 71 is an upper drainage opening located above the second drainage opening 72 and the lower wall portion 9, and is provided in the partition wall portion 8. The second drainage opening 72 is a lower drainage opening located below the first drainage opening 71 and the partition wall portion 8, and is provided in the lower wall portion 9. The first drainage opening 71 is formed at both end portions of the partition wall portion 8 in the longitudinal direction of the ventilation frame 5 (see FIG. 6), and the second drainage openings 72 are formed at both end portions of the lower wall portion 9 in the longitudinal direction of the ventilation frame 5 (see FIG. 9). At each of the both end portions in the longitudinal direction of the ventilation frame 5, the first drainage opening 71 and the second drainage opening 72 are formed at the same position in the longitudinal direction of the ventilation frame 5, with their positions in the longitudinal direction of the ventilation frame 5 aligned.

[0032] The partition wall portion 8 is located above the second drain outlet 72 and the lower wall portion 9, and the lower wall portion 9 is located below the first drain outlet 71 and the partition wall portion 8. The first drain outlet 71 is a through-hole (drainage hole) that penetrates the partition wall portion 8 and is open toward the inside of the first hollow portion 6 and the inside of the second hollow portion 7. The first hollow portion 6 and the second hollow portion 7 are connected to each other by the first drain outlet 71. When water enters the inside of the first hollow portion 6, the water is drained from the first hollow portion 6 downward toward the second hollow portion 7 through the first drain outlet 71. In addition, the water is drained from the second hollow portion 7 downward toward the second hollow portion 7 and the ventilation frame 5 through the second drain outlet 72.

[0033] The first drain outlet 71 and the second drain outlet 72 are positioned at different positions in the indoor-outdoor direction S, and are formed so as to be completely offset in the indoor-outdoor direction S. Therefore, the second drain outlet 72 is provided in the lower wall portion 9 of the second hollow portion 7 so as to be offset in the indoor-outdoor direction S from the first drain outlet 71. The second drain outlet 72 is a through-hole (drainage hole) that penetrates the lower wall portion 9 and is open to the interior of the second hollow portion 7 and the space below the second hollow portion 7. The space below the second hollow portion 7 is the opening 24 of the frame body 20, which is the outside of the ventilation frame 5. The second drain outlet 72 penetrates the lower wall portion 9 in the vertical direction and is open to the opening 24 of the frame body 20 below. The second hollow portion 7 is in communication with the opening 24 of the frame body 20 via the second drain outlet 72.

[0034] The drainage path 70 of the ventilation frame 5 extends to the opening 24 of the frame body 20, passing through the inside of the first hollow portion 6, the first drain outlet 71, the inside of the second hollow portion 7, and the second drain outlet 72 in that order. When water enters the ventilation passage 6A inside the first hollow portion 6, the water is drained from inside the first hollow portion 6 through the first drain outlet 71 to inside the second hollow portion 7. When water enters inside the second hollow portion 7, the water is drained from inside the second hollow portion 7 through the second drain outlet 72 to the outside of the ventilation frame 5 below the second hollow portion 7. In this way, the water is drained into the opening 24 of the frame body 20.

[0035] The partition wall portion 8 of the ventilation frame 5 has a rising portion 80 including the outdoor-side edge of the partition wall portion 8, an upper step portion 81 including the indoor-side edge of the partition wall portion 8, a vertical wall portion 82 protruding downward from the outdoor-side edge of the upper step portion 81, and a bottom surface portion 83 located between the rising portion 80 and the vertical wall portion 82. The rising portion 80 is located on the outdoor side of the bottom surface portion 83 and protrudes upward from the outdoor-side edge of the bottom surface portion 83, reaching the outdoor-side edge of the partition wall portion 8. The upper step portion 81 and the bottom surface portion 83 are arranged along the indoor-outdoor direction S, and the vertical wall portion 82 is arranged along the up-down direction.

[0036] The upper step portion 81 is located on the indoor side of the vertical wall portion 82, and is formed from the upper edge of the vertical wall portion 82 toward the indoor side from the upper edge of the vertical wall portion 82 to the indoor side edge of the partition wall portion 8. The bottom surface portion 83 is located at the lowest bottom of the partition wall portion 8, and the upper step portion 81 and the vertical wall portion 82 are located above the bottom surface portion 83. The vertical wall portion 82 protrudes upward from the indoor side edge of the bottom surface portion 83 and is located between the bottom surface portion 83 and the upper step portion 81. The vertical wall portion 82 is formed at a position offset in the indoor-outdoor direction S (here, on the indoor side) from the second drain outlet 72, and the first drain outlet 71 is provided in the vertical wall portion 82 and penetrates the vertical wall portion 82 in the indoor-outdoor direction S.

[0037] The second drain outlet 72 is formed in a portion of the lower wall portion 9 closer to one side in the indoor-outdoor direction S, and faces in the up-down direction a portion of the partition wall portion 8 that is located on one side in the indoor-outdoor direction S of the vertical wall portion 82. The bottom surface portion 83 is located on one side of the vertical wall portion 82 in the indoor-outdoor direction S, and is disposed above the second drain outlet 72. The vertical wall portion 82 protrudes upward from the bottom surface portion 83 at a position on the other side in the indoor-outdoor direction S of the second drain outlet 72, and connects to the upper stage portion 81. Here, the one side in the indoor-outdoor direction S is the outdoor side, and the other side in the indoor-outdoor direction S is the indoor side. The bottom surface portion 83 and the second drain outlet 72 face each other in the up-down direction.

[0038] The vertical wall portion 82 is formed at a position closer to the room than the second drain outlet 72. The surface of the vertical wall portion 82 on the second hollow portion 7 side is arranged facing the room side (the opposite side from the second drain outlet 72) inside the second hollow portion 7. When viewed from the inside of the first hollow portion 6 toward the inside of the second hollow portion 7, the first drain outlet 71 of the vertical wall portion 82 penetrates the vertical wall portion 82 toward the room side and is open inside the second hollow portion 7 toward the room side.

[0039] The screw hole member 42 and the third heated foaming material 63 are provided inside the first hollow portion 6. The screw hole member 42 is fixed to the inside of the first hollow portion 6 (here, the upper portion 81 of the partition wall portion 8) with screws 41 and is arranged on the upper side of the partition wall portion 8. The third heated foaming material 63 is attached to the bottom surface portion 83 of the partition wall portion 8, contacts the rising portion 80, and is arranged away from the vertical wall portion 82 and the first drain outlet 71 on the outdoor side. The screw holes 43 of the screw hole member 42 and the openings 45 of the screw holes 43 are located above the bottom surface portion 83 of the partition wall portion 8 and the third heated foaming material 63, away from the bottom surface portion 83 of the partition wall portion 8 and the third heated foaming material 63, and face the bottom surface portion 83 of the partition wall portion 8 and the third heated foaming material 63 in the vertical direction.

[0040] 11 and 12 are longitudinal cross-sectional views showing the state in which the third heated foaming material 63 of the ventilation frame 5 of this embodiment has foamed, with the main parts of the opening / closing mechanism 50 omitted and the foamed third heated foaming material 63 shown schematically by dashed lines. Fig. 11 shows the longitudinal end of the ventilation frame 5, and Fig. 12 shows the longitudinal center of the ventilation frame 5.

[0041] As shown in the figure, when the third heated foaming material 63 is heated and foamed by heat such as a fire, it expands in the ventilation passage 6A inside the first hollow section 6. The third heated foaming material 63 expands on the upper side of the partition wall section 8, covering the first drain outlet 71 and the vertical wall section 82 on the first hollow section 6 side and blocking the first drain outlet 71. The third heated foaming material 63 also blocks the inside of the first hollow section 6 and the ventilation passage 6A. At both longitudinal ends of the ventilation frame 5, the third heated foaming material 63 covers the screw holes 43 and the screws 44 of the screw hole member 42 and blocks the open portions 45 of the screw holes 43 and the screw holes 43.

[0042] As described above, in the ventilation frame 5 and the fitting 1 of this embodiment, the first drain outlet 71 and the second drain outlet 72 ensure the drainage performance of the ventilation frame 5. Furthermore, the first drain outlet 71 and the second drain outlet 72 are offset in the indoor-outdoor direction S. Therefore, even if flames enter the second hollow portion 7 through the opening 24 of the frame body 20 and the second drain outlet 72 in the event of a fire, the flames can be prevented from entering the first hollow portion 6 through the first drain outlet 71. This improves the fire resistance of the ventilation frame 5. Therefore, the ventilation frame 5 can achieve both drainage performance and fire resistance.

[0043] By providing the first drain outlet 71 in the vertical wall portion 82 of the partition wall portion 8, even if flames enter the second drain outlet 72, it is difficult for the flames to enter the first hollow portion 6 from the inside of the second hollow portion 7 through the first drain outlet 71. This improves the fire prevention performance of the ventilation frame 5. The vertical wall portion 82 protrudes upward from the bottom surface portion 83 of the partition wall portion 8 at a position closer to the indoor side than the second drain outlet 72. Therefore, the drainage path 70 of the ventilation frame 5 meanders, turning back in the indoor / outdoor direction S from the second drain outlet 72 toward the inside of the first hollow portion 6, which makes it possible to prevent flames from entering the first hollow portion 6 from the second drain outlet 72 through the first drain outlet 71.

[0044] By blocking the first drain outlet 71 with the heated and foamed third heated foam material 63, it is possible to prevent flames from entering the first hollow portion 6 from inside the second hollow portion 7 through the first drain outlet 71, thereby improving the fire prevention performance of the ventilation frame 5. Furthermore, by blocking the ventilation passage 6A with the third heated foam material 63, it is possible to suppress flames from passing through the ventilation passage 6A. The third heated foam material 63 blocking the screw holes 43 of the screw hole member 42 protects the screw holes 43 and the screws 44, suppressing damage to the screw holes 43 and the screws 44. This prevents the vertical frame 23 from coming off the ventilation frame 5.

[0045] The third heated foaming material 63 may be provided over the entire bottom surface 83 of the partition wall 8 in the indoor-outdoor direction S so as to contact the vertical wall 82. Even in this case, water can be drained from the first drain outlet 71 formed in the vertical wall 82, ensuring the drainage path 70 of the ventilation frame 5.

[0046] The ventilation frame 5 may be used on a frame other than the upper frame 21 (for example, the lower frame 22). When the ventilation frame 5 is the lower frame 22, the ventilation frame 5 extends in the left-right direction R along the lower edge of the first shoji screen 2 and drains air toward the lower sill 12. The ventilation frame 5 may be provided on either one of the two shoji screens 2, 3 (for example, the second shoji screen 3), or on both of the two shoji screens 2, 3. The fitting 1 may be a fitting other than a sliding window, and the ventilation frame 5 may be used on the frame of a shoji screen other than a sliding shoji screen. The present invention can be applied to the frame of a shoji screen of various fittings.

[0047] As mentioned above, the ventilation frame is A ventilation frame used as a horizontal frame for a sliding door in a building. a first hollow portion having a ventilation passage; a second hollow portion located below the first hollow portion; a partition wall portion located between the first hollow portion and the second hollow portion; a first drain port provided in the partition wall portion for draining water from the first hollow portion toward the second hollow portion; a second drain outlet provided in a lower wall portion of the second hollow portion located below the first drain outlet, the second drain outlet being shifted in the indoor / outdoor direction from the first drain outlet and draining water downward from the second hollow portion; It is a ventilation frame equipped with. Therefore, the drainage performance of the ventilation frames used in the horizontal frames of the shoji screens of building materials can be ensured while the fire prevention performance of the ventilation frames can be improved.

[0048] The partition wall portion has a vertical wall portion formed at a position shifted from the second drain outlet in the indoor / outdoor direction and arranged along the up-down direction, The first drain port is provided in the vertical wall portion. Therefore, it becomes difficult for flames to enter the inside of the first hollow portion from the inside of the second hollow portion through the first drain outlet, thereby improving the fire prevention performance of the ventilation frame.

[0049] The partition wall portion has a bottom surface portion located on one side of the vertical wall portion in the indoor / outdoor direction and arranged above the second drain outlet, The vertical wall portion protrudes upward from the bottom surface portion at a position on the other side of the second drain outlet in the indoor / outdoor direction. Therefore, the drainage path of the ventilation frame meanders from the second drain outlet toward the inside of the first hollow section, turning back in the indoor / outdoor direction, thereby preventing flames from entering the inside of the first hollow section through the second drain outlet and the first drain outlet.

[0050] The ventilation frame is provided inside the first hollow portion and includes a heat-foaming material that blocks the first drain outlet when heated and foams. Therefore, the heated foam material can prevent flames from entering the inside of the first hollow portion through the first drain outlet from the inside of the second hollow portion, thereby improving the fire prevention performance of the ventilation frame.

[0051] The heat-foaming material closes the ventilation passage when heated and foamed. Therefore, the heated foam material can prevent flames from passing through the ventilation passage of the ventilation frame.

[0052] The ventilation frame includes a screw hole member fixed inside the first hollow portion, The screw hole member has a screw hole into which a screw that attaches the vertical frame of the shoji screen to the ventilation frame is screwed, The heat-foaming material seals the screw holes when heated and foamed. Therefore, the heat-foaming material can protect the screw holes in the screw hole member and prevent damage to the screw holes, thereby preventing the vertical frame from coming off the ventilation frame.

[0053] The fixtures are fitted with shoji screens with ventilation frames. Therefore, the drainage performance of the ventilation frames used in the horizontal frames of the shoji screens of building materials can be ensured while the fire prevention performance of the ventilation frames can be improved. [Explanation of symbols]

[0054] 1···door, 2···first shoji screen, 2A···panel, 3···second shoji screen, 3A···panel, 4···screen door, 5···ventilation frame, 5A···outdoor facing part, 5B···indoor facing part, 5C···outdoor vent, 5D···indoor vent, 5E···filter, 5F···upper groove part, 6···first hollow part, 6 A... ventilation passage, 7... second hollow section, 8... partition section, 9... lower wall section, 10... frame body, 11... upper frame, 12... lower frame, 13... vertical frame, 14... opening, 20... frame body, 21... upper frame, 22... lower frame, 23... vertical frame, 24... opening, 25... mounting wall section, 30... frame body, 31... Upper frame, 32 Lower frame, 33 Vertical frame, 34 Opening, 40 Locking device, 41 Screw, 42 Screw hole member, 43 Screw hole, 44 Screw, 45 Opening portion, 50 Opening / closing mechanism, 51 Opening / closing member, 52 Operating member, 53 Connecting member, 54 Opening port, 61 First heated foam material, 62 Second heated foam material, 63 Third heated foam material, 64 Fourth heated foam material, 70 Drainage path, 71 First drain outlet, 72 Second drain outlet, 80 Rising portion, 81 Upper portion, 82 Vertical wall portion, 83 Bottom portion, R Left / right direction, S Indoor / outdoor direction.

Claims

1. A ventilation frame used as a horizontal frame for a sliding door in a building. a first hollow portion having a ventilation passage; a second hollow portion located below the first hollow portion; a partition wall portion located between the first hollow portion and the second hollow portion; a first drain port provided in the partition wall portion for draining water from the first hollow portion toward the second hollow portion; a second drain outlet provided in a lower wall portion of the second hollow portion located below the first drain outlet, the second drain outlet being shifted in the indoor / outdoor direction from the first drain outlet and draining water downward from the second hollow portion; A ventilation frame equipped with

2. The ventilation frame according to claim 1, The partition wall portion has a vertical wall portion formed at a position shifted from the second drain outlet in the indoor / outdoor direction and arranged along the up-down direction, The first drain outlet is a ventilation frame provided in the vertical wall portion.

3. In the ventilation frame according to claim 2, The partition wall portion has a bottom surface portion located on one side of the vertical wall portion in the indoor / outdoor direction and arranged above the second drain outlet, The vertical wall portion is a ventilation frame that protrudes upward from the bottom surface portion at a position on the other side of the second drain outlet in the indoor / outdoor direction.

4. The ventilation frame according to any one of claims 1 to 3, A ventilation frame provided with a heat-foaming material that is provided inside the first hollow portion and that blocks the first drain outlet when heated and foams.

5. The ventilation frame according to claim 4, The heat-foaming material is a ventilation frame that blocks the ventilation passage when heated and foamed.

6. The ventilation frame according to claim 4 or 5, a screw hole member fixed inside the first hollow portion; The screw hole member has a screw hole into which a screw that attaches the vertical frame of the shoji screen to the ventilation frame is screwed, The heat-foaming material is a ventilation frame that seals the screw holes when heated and foamed.

7. A fitting comprising a shoji screen having a ventilation frame according to any one of claims 1 to 6.

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