Bathroom ventilation structure

Abstract

To provide a bathroom ventilation structure that can restrain gas from flowing from the dressing room side to the bathroom side.SOLUTION: A bathroom ventilation structure 7 is fitted to a fixture 1 that comprises a frame body 2 including a sill 22 and sashes 3, 4 arranged inside the frame body 2. The sill 22 comprises: a sill body 5; a sill upper member 6 arranged in the upper side of the sill body 5; a ventilation passage 71 which, being arranged between the sill body 5 and the sill upper member 6, makes the bathroom and the dressing room communicate with each other and has an opening 712 that is open upwards; at least one sheet of blades 72, 73 that is arranged in the ventilation passage 71; and a movable closing member 9 that is arranged below the opening 712 of the ventilation passage 71 and is movable to a closed position to close the ventilation passage 71 or to an open position to open the ventilation passage 71.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present disclosure relates to a ventilation structure for a bathroom. [Background technology]

[0002] Conventionally, among fittings installed in an opening connecting a bathroom and a changing room, a bathroom ventilation structure is installed in the lower frame of a frame body (see, for example, Patent Document 1). In the ventilation structure described in Patent Document 1, the bathroom can be ventilated through a ventilation passage that connects the bathroom and changing room, and when water flows into the ventilation passage from the bathroom side, a slat installed in the ventilation passage rotates, thereby reducing the inflow of water into the changing room side. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent Publication No. 2021-155914 Summary of the Invention [Problem to be solved by the invention]

[0004] In the bathroom ventilation structure described in Patent Document 1, the rotating blades can reduce the inflow of water from the bathroom to the changing room, but for gases such as steam, the blades do not rotate, so it is not possible to prevent steam (gas) generated on the bathroom side from flowing into the changing room.

[0005] The present disclosure aims to provide a bathroom ventilation structure that can suppress the inflow of gas from the changing room side to the bathroom side. [Means for solving the problem]

[0006] The present disclosure relates to a bathroom ventilation structure installed in a fixture comprising a frame body having a lower frame and a shoji screen arranged within the frame body, wherein the lower frame has a lower frame main body and a lower frame upper member arranged above the lower frame main body, a ventilation passage arranged between the lower frame main body and the lower frame upper member, connecting a bathroom and a dressing room and having an opening that opens upward, at least one slat arranged in the ventilation passage, and a movable closing member arranged below the opening in the ventilation passage and movable between a closed position that closes the ventilation passage and an open position that opens the ventilation passage. [Brief explanation of the drawings]

[0007] [Figure 1] FIG. 2 is a view of the fitting of the first embodiment as seen from the bathroom side. [Figure 2] FIG. [Figure 3] FIG. 1 is a diagram showing a cross section of a building fixture. [Figure 4] FIG. 4 is an enlarged cross-sectional view showing a gap below the first slat and the second slat. [Figure 5] FIG. [Figure 6] This is an oblique view showing the state in which multiple ventilation units have been removed from the lower frame. [Figure 7] FIG. 2 is a perspective view of the ventilation unit as seen from below. [Figure 8] FIG. 2 is an exploded perspective view of the ventilation unit as viewed from above. [Figure 9] FIG. 2 is an exploded perspective view of the ventilation unit as seen from below. [Figure 10] FIG. 2 is an exploded perspective view of the end support cap. [Figure 11] FIG. 6 is a cross-sectional view taken along line AA in FIG. 5. [Figure 12] FIG. 6 is a cross-sectional view taken along line BB in FIG. 5. [Figure 13] This is a view from the front of the bathroom side showing the water-stopping material in contact with the waterproof pan. [Figure 14] FIG. 4 is an enlarged cross-sectional view of a portion where a movable closing member is disposed. [Figure 15]FIG. 10 is a perspective view showing the movable closing member removed from the lower frame. [Figure 16] FIG. [Figure 17A] A cross-sectional view showing a bathroom ventilation structure of a second embodiment. [Figure 17B] FIG. 10 is a perspective view showing the mounting structure of the slat mounting member of the second embodiment. [Figure 18] A cross-sectional view showing a bathroom ventilation structure of a third embodiment. [Figure 19] FIG. 10 is a cross-sectional view showing a movable closing member of a fourth embodiment. [Figure 20] FIG. 10 is a cross-sectional view showing a movable closing member of a fifth embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0008] Hereinafter, embodiments of the present disclosure will be described with reference to the drawings. In this specification, the term "visible direction" refers to the face direction of a glass panel in a fixture placed in an opening in a building. In the visible direction, the horizontal direction is referred to as the left-right direction. The term "visible direction" refers to the thickness direction of the glass panel (i.e., the depth direction). In this embodiment, a case where a glass panel is used as an example of a surface material will be described. The surface material is not limited to a glass panel.

[0009] As shown in Figures 1 to 3, the fitting 1 of the first embodiment is installed in an opening formed in a modular bathroom (not shown) as a building. The fitting 1 is a so-called sliding shoji screen, and as shown in Figure 1, it comprises a frame 2, an inner shoji screen 3 (shoji screen) and an outer shoji screen 4 (shoji screen) fitted into the frame 2 so that they can be opened and closed, and a bathroom ventilation structure 7. In this embodiment, the sliding shoji screen that is located on the bathroom side X1 is referred to as the inner shoji screen 3, and the shoji screen that is located on the changing room side X2 is referred to as the outer shoji screen 4. The fitting 1 can open and close the opening within the frame 2 using the inner shoji screen 3 and outer shoji screen 4.

[0010] The frame 2 is installed in an opening formed in a unit bath (not shown) as a building. Inside the unit bath, a bathroom space is formed in which a waterproof pan 111, a bathtub (not shown), etc. are installed, as shown in Fig. 2. The opening of the unit bath connects the bathroom to a dressing room.

[0011] As shown in Figures 1 to 3, the frame body 2 is framed in a rectangular shape by an upper frame 21, a lower frame 22, and left and right vertical frames 23, 24. The upper frame 21 is formed in an elongated shape extending in the left-right direction at the upper part of the frame body 2. The lower frame 22 is formed in an elongated shape extending in the left-right direction at the lower part of the frame body 2. The left and right vertical frames 23, 24 extend in the up-down direction at both left-right end portions of the upper frame 21 and the lower frame 22.

[0012] The inner shoji screen 3 and the outer shoji screen 4 can slide within the frame body 2. Both the inner shoji screen 3 and the outer shoji screen 4 are sliding doors, and by sliding them left and right, the opening inside the frame body 2 can be opened or closed, forming what is known as a sliding shoji screen.

[0013] As shown in Figures 1 to 3, each of the inner shoji screens 3 comprises a rectangular frame body 35 formed by a long, narrow upper frame 31, a lower frame 32, a joint frame 33 (frame), and a door end frame 34 (frame), and a glass panel 36 (face material) fitted and fixed into the frame body 35. The glass panel 36 is fitted and fixed into the narrow frames (upper frame 31, lower frame 32, joint frame 33, and door end frame 34), and the inner shoji screen 3 has a sleek design.

[0014] Each outer shoji screen 4 is comprised of a rectangular frame body 45 formed by a long, narrow upper frame 41, a lower frame 42, a joint frame 43 (frame), and a door end frame 44 (frame), and a glass panel 46 (face material) fitted and fixed into the frame body 45. The glass panel 46 is fitted and fixed into the narrow frames (upper frame 41, lower frame 42, joint frame 43, and door end frame 44), and the outer shoji screen 4 has a clean design.

[0015] As shown in Figure 2, the upper frame 21 has an upper frame bathroom-side inlet 211 provided on the bathroom side X1 and an upper frame changing room-side inlet 212 provided on the changing room side X2. The upper frame bathroom-side inlet 211 and the upper frame changing room-side inlet 212 are arranged side by side in the viewing direction and are formed into a frame shape that opens downward. The upper end of the upper frame stile 31 of the inner shoji screen 3 is inserted into the upper frame bathroom-side inlet 211. The upper end of the upper frame stile 41 of the outer shoji screen 4 is inserted into the upper frame changing room-side inlet 212.

[0016] As shown in Figure 2, the lower frame 22 has a lower frame main body 5 and a lower frame slope member 6 (lower frame upper member) arranged above the lower frame main body 5. Both the lower frame main body 5 and the lower frame slope member 6 are formed in an elongated shape extending in the left-right direction and also extending a predetermined length in the projection direction. The lower frame 22 is provided with a bathroom ventilation structure 7.

[0017] The bathroom ventilation structure 7 comprises a lower frame body 5 and a lower frame slope member 6 that constitute the lower frame 22, a first slat 72, a second slat 73, and a water-stopping material 75.

[0018] The lower frame body 5 extends in the projection direction so as to straddle the waterproof pan 111 in the bathroom and the dressing room side floor material 112 in the dressing room. The upper surface of the lower frame body 5 is formed in a stepped shape.

[0019] The lower frame body 5 has a hollow lower end hollow portion 51 provided at the lower end of the lower frame body 5 and extending in the projection direction, a bathroom-side extension portion 52 extending from the upper surface of the bathroom-side X1 end of the lower end hollow portion 51 toward the bathroom side X1, a step portion 53 extending upward from the changing room side X2 end of the lower end hollow portion 51, a changing room side extension portion 54 extending from the upper end of the step portion 53 toward the changing room side X2, and a protruding piece 55 protruding from the upper end of the step portion 53 toward the bathroom side X1. The bathroom-side X1 end of the bathroom-side extension portion 52 is located on the upper surface of the bathroom waterproof pan 111. The changing room side X2 end of the changing room side extension portion 54 is located on the upper surface of the changing room side floor material 112.

[0020] The lower frame slope member 6 is formed as a long plate extending in the left-right direction and extends a predetermined length in the projection direction. The lower frame slope member 6 is positioned above the lower frame main body 5, forming a space K that forms a ventilation passage 71 between it and the lower frame main body 5. The ventilation passage 71 is provided between the lower frame main body 5 and the lower frame slope member 6, and connects the bathroom and the dressing room.

[0021] 2, the lower frame slope member 6 has a changing room side extension portion 60, a guide recess 61, a bathroom side extension portion 62, a sloped slope portion 63, and a changing room side end sloped protrusion piece 64. The changing room side extension portion 60, the guide recess 61, the bathroom side extension portion 62, and the sloped slope portion 63 are arranged in this order from the changing room side X2 toward the bathroom side X1.

[0022] As shown in Figure 2, the guide recess 61 is formed in a frame shape with a recessed upper side. The guide recess 61 is located below the inner shoji screen 3 and the outer shoji screen 4. The lower end protrusion 3a of the inner shoji screen 3 and the lower end protrusion 4a of the outer shoji screen 4 are located in the guide recess 61. The guide recess 61 guides the lower ends of the inner shoji screen 3 and outer shoji screen 4, which can slide.

[0023] The changing room-side extending portion 60 extends horizontally toward the changing room side X2 for a predetermined length from the end of the guide recess 61 on the changing room side X2. The bathroom-side extending portion 62 extends horizontally toward the bathroom side X1 for a predetermined length from the end of the guide recess 61 on the bathroom side X1. The sloped portion 63 extends downwardly toward the bathroom side X1 for a predetermined length from the end of the bathroom side X1 of the bathroom-side extending portion 62 on the bathroom side X1.

[0024] The changing room side end inclined protruding piece 64 protrudes downward at the end of the changing room side X2 of the changing room side extending portion 60. The changing room side end inclined protruding piece 64 inclines downward as it moves from the changing room side X2 toward the bathroom side X1.

[0025] The lower frame slope member 6 is positioned in the projection direction away from the upper end of the step portion 53 of the lower frame main body 5 toward the bathroom side X1. The lower frame slope member 6 is positioned with a space K between it and the lower frame main body 5.

[0026] Space K forms a ventilation passage 71 that connects the bathroom and the changing room. The ventilation passage 71 forms a ventilation mechanism and is formed extending in the projection direction of the fixture 1. The ventilation passage 71 has a bathroom-side opening 711 formed on the bathroom side X1 and a changing room-side opening 712 formed on the changing room side X2.

[0027] The bathroom-side opening 711 is an opening provided on the bathroom side X1 of the ventilation passage 71, and is formed on the bathroom side X1 between the waterproof pan 111 and the end of the lower frame slope member 6 on the bathroom side X1. The changing room-side opening 712 is an opening provided on the changing room side X2 of the ventilation passage 71, and is formed between the end of the lower frame slope member 6 on the changing room side X2 and the step portion 53 of the lower frame main body 5. The changing room-side opening 712 opens upward. The bathroom ventilation structure 7 ventilates the bathroom through the ventilation passage 71. A movable closing member 9 is arranged below the changing room-side opening 712 in the ventilation passage 71. Details of the movable closing member 9 will be described later.

[0028] The lower frame body 5 has a protruding piece 55 that protrudes from the upper end of the step portion 53 toward the bathroom side X1. The protruding piece 55 protrudes from the upper end of the step portion 53 of the lower frame body 5 toward the changing room side opening 712 so as to block part of the changing room side opening 712. The protruding piece 55 is formed in an L-shape that opens downward. The protruding piece 55 can, to a certain extent, prevent water that has broken through the two first and second slats 72 and 73 in the ventilation passage 71 and flowed into the changing room side X2 from overflowing from the changing room side opening 712.

[0029] 2, a first blade 72, a second blade 73, and a movable closing member 9 are arranged in the ventilation passage 71. The first blade 72 and the second blade 73 are attached to a blade attachment member 81. By being attached to the blade attachment member 81, the first blade 72 and the second blade 73 are integrally formed.

[0030] Therefore, when providing the first vane plate 72 and the second vane plate 73 in the ventilation passage 71, they can be attached as a single unit to the lower frame main body 5, making attachment easy. Furthermore, by integrating the first vane plate 72 and the second vane plate 73, variation in attachment position can be suppressed. As a result, by suppressing variation in attachment position by integrating the first vane plate 72 and the second vane plate 73, even when the first vane plate 72 and the second vane plate 73 rotate, the tip of the first vane plate 72 and the tip of the second vane plate 73 can be easily attached at a position where they reliably abut against the underside of the lower frame slope member 6.

[0031] As shown in Fig. 4, the slat mounting member 81 is provided above the lower frame main body 5. A gap S is formed between the slat mounting member 81 and the lower frame main body 5, thereby forming a gap S between the first slat 72 and the second slat 73 and the lower frame main body 5. The slat mounting member 81 is fixed to the lower frame slope member 6 with a gap S formed between it and the lower frame main body 5.

[0032] The first slat 72 and the second slat 73 are attached to the slat mounting members 81 in each of the three ventilation units 8, and are fixed to the lower frame slope member 6 via the slat mounting members 81. The three ventilation units 8 are arranged side by side in the left-right direction (longitudinal direction) on the upper surface of the lower frame main body 5, as shown in Figures 5 and 6.

[0033] As shown in Figures 7 to 9, each ventilation unit 8 has a lower frame slope member 6, a slat mounting member 81 to which a first slat 72 and a second slat 73 are attached, a pair of end support caps 82 (end support members), and an intermediate support member 83.

[0034] The slat mounting member 81 is positioned below the lower frame slope member 6 and extends in the left-right direction (longitudinal direction) of the lower frame slope member 6. The slat mounting member 81 is fixed to the lower frame slope member 6 via a pair of end support caps 82 and an intermediate support member 83, with a gap S (see Figure 4) formed between it and the lower frame main body 5. The formation of the gap S between the slat mounting member 81 and the lower frame main body 5 allows water to flow smoothly from the dressing room side X2 to the bathroom side X1 through the gap S between the slat mounting member 81 and the lower frame main body 5.

[0035] 8 and 9, the pair of end support caps 82 are attached to both left-right (longitudinal) ends of the lower frame slope member 6. Each of the pair of end support caps 82 is formed to extend in the projection direction.

[0036] As shown in Fig. 10, the end support cap 82 has an end support cap main body 821 (outer support member member) and a core material 822 that is disposed inside the end support cap main body 821 and extends in the projection direction. The core material 822 is housed in a housing portion that opens upward and extends in the projection direction on the bathroom side X1 of the end support cap 82. By disposing the core material 822 on the inside of the end support cap main body 821, the strength of the lower frame slope member 6 is reinforced, and it can support the load when the bathroom side X1 of the lower frame slope member 6 is stepped on with a foot.

[0037] As shown in Figures 8 and 9, the pair of end support caps 82 are fitted onto the left and right ends of the lower frame slope member 6. Each of the pair of end support caps 82 has a space-forming support portion 825. The space-forming support portion 825 is arranged between the lower frame slope member 6 and the lower frame main body 5 so as to form a space K (see Figure 4) between the lower frame slope member 6 and the lower frame main body 5. By arranging the space-forming support portions 825 between the pair of end support caps 82 and the lower frame slope member 6, the pair of end support caps 82 support the lower frame slope member 6 on the upper surface of the lower frame main body 5 at both left and right ends of the ventilation unit 8, as shown in Figure 11.

[0038] The left and right ends of the changing room side portion 815 of the slat mounting member 81 are fixed to the underside of each of the pair of end support caps 82 with screws 823. This allows the slat mounting member 81 to be fixed to the end support caps 82 with a gap S (see Figure 4) formed between it and the lower frame body 5. The space-forming support portion 825 on the changing room side X2 of the end support cap 82 is positioned on the upper surface of the lower frame body 5.

[0039] As shown in FIGS. 8 and 9, the intermediate support member 83 is formed at the center of the lower frame slope member 6 in the left-right direction, extending in the projection direction.

[0040] 8, the intermediate support member 83 has a central support member main body 831 and a core material 832 that is disposed inside the central support member main body 831 and extends in the projection direction. The core material 832 is housed in a housing section that opens upward and extends in the projection direction on the bathroom side X1 of the intermediate support member 83. By disposing the core material 832 on the inside of the central support member main body 831, the strength of the lower frame slope member 6 is reinforced, and it can support the load when the bathroom side X1 of the lower frame slope member 6 is stepped on with a foot.

[0041] As shown in Figures 8 and 9, each intermediate support member 83 has a space-forming support portion 835. The space-forming support portion 835 is arranged between the lower frame slope member 6 and the lower frame main body 5 so as to form a space K between the lower frame slope member 6 and the lower frame main body 5. As a result, by arranging the space-forming support portion 835 between the lower frame slope member 6 and the lower frame main body 5, the intermediate support member 83 supports the lower frame slope member 6 on the upper surface of the lower frame main body 5 in the center of the ventilation unit 8 in the left-right direction, as shown in Figure 12.

[0042] As shown in Figures 8, 9 and 12, the intermediate support member 83 is fitted into the left-right center of the underside of the lower frame slope member 6. The left-right center of the changing room side portion 815 of the slat mounting member 81 is fixed to the underside of the intermediate support member 83 with a screw 833. The space-forming support portion 835 on the changing room side X2 of the intermediate support member 83 is positioned on the upper surface of the lower frame main body 5, as shown in Figure 12. As a result, the intermediate support member 83 supports the left-right center of the ventilation unit 8 on the upper surface of the lower frame main body 5.

[0043] In this embodiment, one intermediate support member 83 is provided, but this is not limiting. The number of intermediate support members 83 is set according to the left-right length of the ventilation unit 8. For example, if the left-right length of the ventilation unit 8 is long enough to be supported by a pair of end support caps 82, it is not necessary to provide an intermediate support member 83, and if the left-right length of the ventilation unit 8 is long, two or more intermediate support members 83 may be provided.

[0044] 4, the slat mounting member 81 has a slat mounting member main body 811 extending in the projection direction, a first slat mounting portion 812 (slat mounting portion), a second slat mounting portion 813 (slat mounting portion), and a water-stopping material mounting portion 814. The slat mounting member 81 is arranged at the end of the lower frame main body 5 on the bathroom side X1, and protrudes from the end of the lower frame main body 5 on the bathroom side X1 toward the bathroom side X1.

[0045] The first slat mounting portion 812 is provided at the lower end of the bathroom side X1 of the slat mounting member main body 811. The first slat mounting portion 812 is formed in a C-shape that opens toward the bathroom side X1 and extends in the left-right direction. The rotation shaft 72a of the first slat 72 is attached to the first slat mounting portion 812.

[0046] The second slat mounting portion 813 is provided at the upper end of the slat mounting member main body 811 on the changing room side X2. The second slat mounting portion 813 is formed in a C-shape that opens toward the bathroom side X1 and extends in the left-right direction. The rotation shaft 73a of the second slat 73 is attached to the second slat mounting portion 813.

[0047] The water-stopping material mounting portion 814 is provided on the underside of the portion that protrudes from the lower end of the first slat mounting portion 812 toward the bathroom side X1. The water-stopping material mounting portion 814 is formed in a groove shape that opens downward and extends in the left-right direction. The water-stopping material 75 is attached to the water-stopping material mounting portion 814.

[0048] As shown in Figure 4, the first slat 72 and the second slat 73 are attached to the slat mounting member 81, and receive water flowing into the ventilation passage 71 from the bathroom side X1, reducing the amount of water flowing into the changing room side X2.

[0049] The first slat 72 and the second slat 73 are arranged, for example, on the bathroom side X1 from the position where the inner shoji screen 3 is arranged in the direction of view of the ventilation passage 71. In the lower part of the ventilation passage 71, the first slat 72 is arranged on the bathroom side X1, and the second slat 73 is arranged on the changing room side X2 from the first slat 72.

[0050] The first slat 72 has a pivot shaft 72a formed at one end thereof, which is attached to the first slat mounting portion 812 of the slat mounting member 81 at the bottom of the ventilation passage 71. The first slat 72 can rotate around the pivot shaft 72a when it receives water moving through the ventilation passage 71 from the bathroom side X1 to the dressing room side X2.

[0051] Before receiving water, first slat 72 extends linearly from pivot shaft 72a toward bathroom side X1. When a relatively small amount of water flows into ventilation passage 71 from bathroom-side opening 711 on bathroom side X1 of ventilation passage 71, first slat 72 is a component that rotates about pivot shaft 72a to receive the water that has flowed into ventilation passage 71. An example of a relatively small amount of water is shower water sprayed by a shower device (not shown).

[0052] When the first slat plate 72 rotates a predetermined angle, its tip abuts against the underside of the lower frame slope member 6. The first slat plate 72 is set to a rotation angle and length that suppresses the inflow of a relatively small amount of water, such as from a shower. The rotation angle and length in the projection direction of the first slat plate 72 are set appropriately.

[0053] The second slat 73 has a pivot shaft 73a formed at one end thereof, which is attached to the second slat mounting portion 813 of the slat mounting member 81, closer to the changing room side X2 than the first slat 72 at the bottom of the ventilation passage 71. The second slat 73 can rotate around the pivot shaft 73a when it receives water moving through the ventilation passage 71 from the bathroom side X1 to the changing room side X2.

[0054] Before receiving water, second slat 73 extends linearly from pivot shaft 73a toward bathroom side X1. When a relatively large amount of water flows in from bathroom-side opening 711 on bathroom side X1 of ventilation passage 71, second slat 73 is a component that rotates around pivot shaft 73a to receive the water that flows into ventilation passage 71. An example of a relatively large amount of water is overflow water that overflows when taking a bath in a bathtub that is filled with water.

[0055] When the second slat plate 73 is rotated by a predetermined angle, its tip abuts against the underside of the lower frame slope member 6. The second slat plate 73 is set to a rotation angle and length that suppresses the inflow of a relatively large amount of water, such as overflow water. The rotation angle and length in the projection direction of the second slat plate 73 are set appropriately.

[0056] As shown in Fig. 2, the portion of the ventilation passage 71 closer to the changing room side X2 than the second slat 73 forms a water reservoir 74 that collects water that is not blocked by the first slat 72 and the second slat 73. The size of the water reservoir 74 can be set appropriately by adjusting the positions of the first slat 72 and the second slat 73 in the forward direction.

[0057] As shown in Figure 4, the water-stopping material 75 is attached to the water-stopping material attachment portion 814 on the underside of the end portion on the bathroom side X1 of the slat mounting member 81. The water-stopping material 75 protrudes at a downward slope toward the bathroom side X1 from the underside of the end portion on the bathroom side X1 of the first slat mounting portion 812. The water-stopping material 75 is formed so as to slope downward toward the bathroom side X1 from the underside of the end portion on the bathroom side X1 of the slat mounting member 81 toward the waterproof pan 111.

[0058] The water-stopping material 75 is formed to extend from the underside of the end side of the first slat mounting portion 812 on the bathroom side X1 to the bathroom waterproof pan 111 (floor surface), and its tip contacts the bathroom waterproof pan 111. As shown in Figure 13, the water-stopping material 75 extends in the left-right direction of the lower frame 22 in the range between the left and right vertical frames 23, 24.

[0059] The water stopping material 75, with its tip in a deformed state, comes into contact with the waterproof pan 111. The water stopping material 75, with its tip in contact with the waterproof pan 111, ensures airtightness and watertightness.

[0060] As shown in Figure 14, the movable closing member 9 is disposed on the changing room side X2 of the ventilation passage 71. The movable closing member 9 is disposed at the bottom of the ventilation passage 71 below the changing room side opening 712 (opening) within the ventilation passage 71. As shown in Figure 15, the movable closing member 9 is formed to extend in the left-right direction.

[0061] As shown in Figure 14, the movable closing member 9 can be rotated between a closed position (position indicated by the dotted line in Figure 14) in which the ventilation passage 71 is closed and an open position (position indicated by the solid line in Figure 14) in which the ventilation passage 71 is opened by opening and closing the changing room side opening 712.

[0062] The movable closing member 9 has a sectorial cylindrical portion 91 and an operation protrusion 92. The sectorial cylindrical portion 91 is formed into a cylindrical shape whose cross section cut in the projection direction has a sectoral shape.

[0063] The sectorial cylindrical portion 91 has an arc-shaped portion 911, one side edge portion 912, and the other side edge portion 913. The one side edge portion 912 and the other side edge portion 913 are connected at their ends on one side with a predetermined central angle θ, and the arc-shaped portion 911 is disposed between their ends on the other side.

[0064] The central angle θ formed between the one side portion 912 and the other side portion 913 is, for example, 30° to 90°. In this embodiment, the central angle θ formed between the one side portion 912 and the other side portion 913 is, for example, 60°.

[0065] The movable closing member 9 is configured to be rotatable around a rotation axis J. The rotation axis J of the movable closing member 9 is formed at the connection between one side edge portion 912 and the other side edge portion 913 of the sectorial cylindrical portion 91, and is disposed below the movable closing member 9 at the bottom of the ventilation passage 71.

[0066] In this embodiment, the movable closing member 9 can rotate within a range of a rotation angle α, which is the same as the central angle θ formed between the one side edge portion 912 and the other side edge portion 913. However, the rotation angle of the movable closing member 9 is not limited to this and can be set appropriately.

[0067] When the movable closing member 9 is in the closed position (the position shown by the two-dot chain line in Figure 14), the movable closing member 9 abuts against the changing room side end inclined protruding piece 64 formed at the end of the lower frame slope member 6 on the changing room side X2, closing the changing room side opening 712. When the movable closing member 9 is in the open position (the position shown by the solid line in Figure 14), the movable closing member 9 moves away from the changing room side end inclined protruding piece 64 formed at the end of the lower frame slope member 6 on the changing room side X2, opening the changing room side opening 712.

[0068] The operating protrusion 92 is a protrusion that is operated by the user's hand when moving the movable closing member 9 from the open position to the closed position. The operating protrusion 92 protrudes from the bathroom side X1 end of the fan-shaped cylindrical portion 91. The operating protrusion 92 is positioned at a position lower than the upper surface 60a of the changing room side extension portion 60 of the lower frame slope member 6.

[0069] As a result, the operating protrusion 92 is hidden by the upper surface 60a of the changing room-side extension 60 of the lower frame slope member 6, making it difficult to see, thereby improving the design. Also, the operating protrusion 92 is positioned lower than the upper surface 60a of the changing room-side extension 60 of the lower frame slope member 6, and does not protrude from the upper surface 60a of the lower frame slope member 6, making it less likely for the user to trip over it.

[0070] The movable closing member 9 has an arc-shaped portion 911 disposed on the upper side in the closed position, and the arc-shaped portion 911 disposed on the changing room side X2 in the open position. As a result, the upper side of the movable closing member 9 is formed in an arc shape when it is located in the closed position.

[0071] The arc-shaped portion 911 is located at the top when the movable closing member 9 is moved from the closed position to the open position, and the user can rotate the movable closing member 9 by touching the arc-shaped upper surface of the movable closing member 9 with their fingers.

[0072] Since the upper surface of the arc-shaped portion 911 is formed in an arc shape, when the movable closing member 9 is rotated, the distance between the arc-shaped upper surface of the arc-shaped portion 911 and the lower end of the L-shaped protruding piece 55 protruding from the upper end of the lower frame main body 5 toward the changing room side opening 712 can be maintained constant.

[0073] 15 and 16, the movable closing member 9 has a movable closing member body 95 extending in the longitudinal direction of the lower frame 22, and a pair of end caps 96 disposed at both longitudinal ends of the movable closing member body 95. The movable closing member body 95 forms a fan-shaped cylindrical portion 91 whose cross section is formed into a fan-shaped cylindrical shape.

[0074] The end cap 96 has a fan-shaped side plate 961 arranged on the side of the longitudinal end of the movable closing member main body 95, an axis-forming protrusion 962 protruding from the top of the fan of the fan-shaped side plate 961 outward in the longitudinal direction of the movable closing member main body 95, and an attachment member 963 inserted into the longitudinal end of the movable closing member main body 95.

[0075] The shaft-constituting protrusion 962 constitutes a rotation axis J that serves as the rotation center of the movable closing member 9. As shown in Figure 15, the shaft-constituting protrusion 962 is inserted into and pivotally supported by pivot support holes 23a, 24a formed in the vertical frames 23, 24 on the changing room side X2 of the lower frame 22.

[0076] The attachment member 963 is inserted into the longitudinal end of the movable closing member body 95 to attach the end cap 96 to the end of the movable closing member body 95.

[0077] The movable closing member body 95 is made of aluminum or a hard resin material, and the end cap 96 is made of a resin material. However, the materials of the movable closing member body 95 and the end cap 96 are not limited.

[0078] Next, we will explain the operation of the bathroom ventilation structure 7. In the bathtub ventilation structure 7, the space K between the lower frame body 5 and the lower frame slope member 6 is made into a ventilation passage 71, and the bathroom can be ventilated through the ventilation passage 71. Because the bathroom ventilation structure 7 is provided on the lower frame 22, it is less visible than if it were provided on the upper frame 21, improving the design.

[0079] In the bathroom ventilation structure 7, when water flows in from the bathroom side opening 711 on the bathroom side X1 of the ventilation passage 71, the two slats (first slat 72 and second slat 73) arranged in the ventilation passage 71 can receive the water that flows into the ventilation passage 71 through a two-stage inflow reduction structure, thereby reducing the inflow of water into the changing room side X2.

[0080] Furthermore, the first slat 72 can reduce the amount of water flowing into the changing room side X2, for example, when a relatively small amount of water flows into the ventilation passage 71. The second slat 73 can reduce the amount of water flowing into the changing room side X2, for example, when a relatively large amount of water flows into the ventilation passage 71. This makes it possible to efficiently reduce the amount of water flowing into the changing room side X2, even when the amount of water flowing into the ventilation passage 71 varies.

[0081] Therefore, whether the amount of water flowing into the ventilation passage 71 from the bathroom-side opening 711 on the bathroom side X1 is relatively small or relatively large, the inflow of water can be significantly reduced by the effective slats in each case. Furthermore, because two slats are arranged along the ventilation passage 71, the inflow of water can be reduced by one slat that is highly effective in significantly reducing the inflow of water, while the inflow of water can be supplementarily reduced by another slat. Therefore, the inflow of water into the changing room side X2 can be effectively reduced.

[0082] In addition, since a gap S is formed between the first slat 72 and the second slat 73 and the lower frame body 5, even if the ventilation passage 71 is blocked by the first slat 72 and the second slat 73, water present on the changing room side X2 of the ventilation passage 71 can be smoothly flowed from the changing room side X2 to the bathroom side X1.

[0083] Water that flows into the gap S between the first slat 72 and the second slat 73 and the lower frame body 5 is stopped by the water-stopping material 75 on the waterproof pan 111. The water that has been stopped by the water-stopping material 75 is discharged to the outside from both longitudinal ends of the water-stopping material 75 because the tip of the water-stopping material 75 comes into contact with the bathroom waterproof pan 111 in the left-right range where the water-stopping material 75 is installed.

[0084] Furthermore, when using the bathroom, the user can rotate the movable closing member 9 from the open position to the closed position by manually operating the operating protrusion 92. This closes the ventilation passage 71, for example, to prevent steam from flowing into the changing room side X2 when the bathroom is being used as a mist sauna, or to prevent cool air from the changing room from flowing into the bathroom when the bathroom is in use, thereby preventing the outflow of warm air. After using the bathroom, the user rotates the movable closing member 9 from the closed position to the open position to allow air to flow from the changing room side X2 to the bathroom side X1, drying the bathroom.

[0085] The bathroom ventilation structure 7 of the first embodiment configured as above has the following advantages.

[0086] The bathroom ventilation structure 7 of this embodiment is installed in a fixture 1 that includes a frame body 2 having a bottom frame 22, and an inner shoji screen 3 and an outer shoji screen 4 arranged within the frame body 2. The bottom frame 22 includes a bottom frame main body 5 and a bottom frame slope member 6 arranged above the bottom frame main body 5. The ventilation passage 71 is arranged between the bottom frame main body 5 and the bottom frame slope member 6 and has a dressing room-side opening 712 that opens upward and connects the bathroom to the dressing room. It also includes a first slat 72 and a second slat 73 arranged in the ventilation passage 71. A movable closing member 9 is arranged below the dressing room-side opening 712 in the ventilation passage 71 and is movable between a closed position that closes the ventilation passage 71 and an open position that opens the ventilation passage 71. The ventilation passage 71 can be opened and closed by the movable closing member 9, which can prevent steam, cold air, and other gases from flowing from the dressing room to the bathroom.

[0087] In this embodiment, the movable closing member 9 is configured to be rotatable about a rotation axis J. This allows the ventilation passage 71 to be easily opened and closed by rotating the movable closing member 9.

[0088] In this embodiment, the rotation axis J of the movable closing member 9 is disposed below the movable closing member 9 at the bottom of the ventilation passage 71. This allows the ventilation passage 71 to be easily opened and closed by operating the upper part of the movable closing member 9.

[0089] In this embodiment, the upper side of the movable closing member 9 is formed in an arc shape when it is in the closed position. As a result, when moving the movable closing member 9 from the closed position to the open position, the user can rotate the movable closing member 9 by touching the arc-shaped upper surface of the movable closing member 9 with their fingers. Furthermore, when the movable closing member 9 is rotated, the distance between the arc-shaped upper surface of the movable closing member 9 and the lower end of the L-shaped protruding piece 55 that protrudes from the upper end of the lower frame body 5 toward the changing room-side opening 712 can be kept constant.

[0090] Furthermore, in this embodiment, the movable closing member 9 has an operation protrusion 92, which is positioned at a position lower than the upper surface 60a of the changing room-side extending portion 60 of the lower frame slope member 6. As a result, the operation protrusion 92 is hidden by the upper surface 60a of the changing room-side extending portion 60 of the lower frame slope member 6, making it difficult to see. This improves the design. Furthermore, since the operation protrusion 92 is positioned at a position lower than the upper surface 60a of the changing room-side extending portion 60 of the lower frame slope member 6 and does not protrude from the upper surface 60a of the lower frame slope member 6, users are less likely to trip.

[0091] In this embodiment, the movable closing member 9 has a movable closing member body 95 extending in the longitudinal direction of the lower frame 22, and a pair of end caps 96 disposed on both longitudinal ends of the movable closing member body 95. The movable closing member body 95 is formed from an aluminum material or a hard resin material. This makes the movable closing member body 95 less likely to deform and can stably block gases such as steam and cold air.

[0092] Next, second to fifth embodiments will be described. In the description of the second to fifth embodiments, the description of the same configuration as the first embodiment will be omitted or simplified as appropriate. For the configuration not described in the second to fifth embodiments, the description of the first embodiment will be used.

[0093] The second embodiment will now be described. The bathroom ventilation structure 7A of the second embodiment differs from the first embodiment in the mounting structure of the slat mounting member 81. In the second embodiment, as shown in Figures 17A and 17B, the slat mounting member 81 is fixed to the lower frame body 5 via a spacer member 85.

[0094] As shown in Figure 17A, the slat mounting member 81 is fixed to the lower frame body 5 via a plurality of spacer members 85, with a gap S formed between it and the lower frame body 5. As shown in Figure 17B, the plurality of spacer members 85 are arranged side by side in the left-right direction on the upper surface of the bathroom-side extension portion 52 on the bathroom side X1 of the lower frame body 5. The ventilation unit 8 including the slat mounting member 81 is arranged above the lower frame body 5 with the plurality of spacer members 85 sandwiched between them, so that the slat mounting member 81 is fixed to the lower frame body 5 via the plurality of spacer members 85, with a gap S formed between it and the lower frame body 5.

[0095] According to the second embodiment, by fixing the slat mounting member 81 to the lower frame main body 5 via multiple spacer members 85, a gap S can be formed between the first slat 72 and the second slat 73 and the lower frame main body 5 with a simple configuration.

[0096] The third embodiment will now be described. The bathroom ventilation structure 7B of the third embodiment differs from the first embodiment mainly in that the slat mounting member 81 is fixed directly to the lower frame body 5. In the third embodiment, as in the first embodiment, the first slat 72 and the second slat 73 are integrally formed by being attached to the slat mounting member 81, as shown in FIG. 18. In the third embodiment, unlike the first embodiment, no gap is formed between the slat mounting member 81 and the lower frame body 5.

[0097] According to the third embodiment, when the first vane plate 72 and the second vane plate 73 are provided in the ventilation passage 71, they can be easily attached as a single unit to the lower frame main body 5. Furthermore, by integrating the first vane plate 72 and the second vane plate 73, variation in the attachment position can be suppressed. As a result, even if the first vane plate 72 and the second vane plate 73 rotate, the tip of the first vane plate 72 and the tip of the second vane plate 73 can be easily attached at a position where they reliably abut against the lower surface of the lower frame slope member 6.

[0098] The fourth embodiment will now be described. The bathroom ventilation structure 7C of the fourth embodiment differs from the first embodiment in the configuration of the movable closing member 9A. As shown in FIG. 19, the movable closing member 9A of the fourth embodiment has a sectorial cylindrical portion 91 and an operating protrusion 92A. In the third embodiment, the sectorial cylindrical portion 91 and the operating protrusion 92A are separate members, and the operating protrusion 92A is attached to the arc-shaped portion 911 of the sectorial cylindrical portion 91.

[0099] The operation protrusion 92A is formed, for example, with an L-shaped cross section, and is provided at a part of the middle in the longitudinal direction on the upper surface of the arc-shaped portion 911 of the sectorial cylindrical portion 91. Note that the operation protrusion 92A may be formed to extend over the entire length of the sectorial cylindrical portion 91, rather than at a part of the middle in the longitudinal direction of the sectorial cylindrical portion 91.

[0100] The fifth embodiment will now be described. The bathroom ventilation structure 7D of the fifth embodiment differs from the first embodiment in the configuration of the movable closing member 9B. As shown in Figure 20, the movable closing member 9B of the fifth embodiment has a movable flat plate 93 that opens and closes the undressing room-side opening 712, and an operating protrusion 94.

[0101] The movable flat plate 93 is positioned to open and close the changing room-side opening 712, and is formed in the shape of a plate that extends a predetermined width in the projection direction and in the longitudinal direction of the lower frame 22. The movable flat plate 93 is slidable in the projection direction to open and close the changing room-side opening 712. The operating protrusion 94 is connected to the upper surface of the movable flat plate 93 and protrudes upward.

[0102] As a result, by placing a hand on the operating protrusion 94 and sliding the movable flat plate 93 in the forward direction, the movable flat plate 93 opens and closes the changing room-side opening 712, and the movable closing member 9B can be moved between a closed position (position indicated by a solid line in FIG. 20) that closes the ventilation passage 71 and an open position (position indicated by a two-dot chain line in FIG. 20) that opens the ventilation passage 71. Therefore, the movable closing member 9B can be provided with a simple configuration.

[0103] While the preferred embodiments of the present disclosure have been described above, the present disclosure is not limited to the above-described embodiments and can be modified as appropriate.

[0104] In the above embodiment, the fittings according to the present disclosure have been described as fittings equipped with sliding shoji screens that open and close an opening. The present disclosure is also applicable to fittings equipped with single sliding doors (shoji screens) or two or more sliding doors (shoji screens). The present disclosure is also applicable to hinged doors and folding doors that open and close in an arc relative to the opening. The present disclosure is also applicable to sliding windows, vertical sliding windows, horizontal sliding windows, etc. The present disclosure is not limited to fittings installed in an opening that connects a bathroom and a dressing room. It may also be applied to fittings installed in a building opening that connects the inside and outside of a building.

[0105] In the above embodiment, one or two slats are provided in the ventilation passage, but the present invention is not limited to this and three or more slats may be provided in the ventilation passage. [Explanation of symbols]

[0106] 1 fittings, 2 frame body, 3 inner shoji (shoji), 4 outer shoji (shoji), 5 lower frame body, 6 lower frame slope member (lower frame upper member), 7 bathroom ventilation structure, 9 movable closing member, 22 lower frame, 71 ventilation passage, 72 first slat (slat), 73 second slat (slat), 95 movable closing member body, 96 end cap, 712 changing room side opening (opening),

Claims

1. A bathroom ventilation structure installed in a fixture comprising a frame body having a lower frame and a shoji screen arranged within the frame body, The lower frame has a lower frame main body and a lower frame upper member arranged above the lower frame main body, a ventilation passage provided between the lower frame body and the lower frame upper member, communicating the bathroom and the dressing room and having an opening facing upward; At least one slat disposed in the ventilation passage; a movable closing member disposed below the opening in the ventilation passage and movable between a closed position to close the ventilation passage and an open position to open the ventilation passage, The movable closing member is configured to be rotatable around a rotation axis, A bathroom ventilation structure, wherein the rotation axis of the movable closing member is positioned below the movable closing member and at the bottom of the ventilation passage.

2. A bathroom ventilation structure installed in a fixture comprising a frame body having a lower frame and a shoji screen arranged within the frame body, The lower frame has a lower frame main body and a lower frame upper member arranged above the lower frame main body, a ventilation passage provided between the lower frame body and the lower frame upper member, communicating the bathroom and the dressing room and having an opening facing upward; At least one slat disposed in the ventilation passage; a movable closing member disposed below the opening in the ventilation passage and movable between a closed position to close the ventilation passage and an open position to open the ventilation passage, The movable closing member has an operating protrusion, A bathroom ventilation structure in which the operating protrusion is positioned at a position lower than the upper surface of the lower frame upper member.

3. The bathroom ventilation structure according to claim 1 or 2, wherein the movable closing member has an upper side formed in an arc shape when in the closed position.

4. The movable closing member has a movable closing member body extending in the longitudinal direction of the lower frame, and an end cap disposed at an end of the movable closing member body in the longitudinal direction, The bathroom ventilation structure according to any one of claims 1 to 3, wherein the movable closing member body is made of aluminum or hard resin material.

5. The bathroom ventilation structure according to claim 4, wherein the end cap is made of a resin material.

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