Waterproof shutter

Abstract

To provide an improved water stop structure in a waterproof shutter.SOLUTION: The water stop structure includes: a shutter curtain 1 constituted of multiple panels 2, 3, 4; right and left guide bodies 5; and a vertical compression mechanism 7 that vertically compresses the shutter curtain 1 in the fully closed position. On either one of the indoor part of the lower end part of the upper panel of the vertically adjacent panels and the indoor side part of the upper-end part of the lower panel, an elastic waterproof member 16 extending in the width direction of the panel, and the other is the pressing part that presses the elastic waterproof member. In the vertical compression state of the shutter curtain 1, when the pressing part presses against the elastic waterproof member 16, a water stop structure is formed over the width direction of the panel on the indoor side of the vertically adjacent panel.SELECTED DRAWING: Figure 26

Description

[Technical field]

[0001] The present invention relates to a waterproof shutter. [Background technology]

[0002] In recent years, sudden heavy rains caused by abnormal weather have become frequent, and in urban areas, there have been accidents where rainwater has flooded subway stations and building basements. In an emergency, it may be necessary to install them at the entrances of buildings, etc. to prevent water from entering the building from the outside. In addition, there are cases where it is necessary to close the openings of a building in a watertight state to prevent water from entering the building, not just during sudden heavy rains.

[0003] As exemplified in Patent Document 1, a waterproof panel shutter that closes a building opening in a watertight state has been proposed. In the waterproof panel shutter, when the opening is fully closed, a watertight structure is formed by closing a gap between the lower end portion of the upper panel and the upper end portion of the lower panel with an elastic watertight member that extends across the entire width of the panel and is pressed between the lower end portion of the upper panel and the upper end portion of the lower panel.

[0004] There are cases where it is desired to make such waterproof shutters function as fireproof and smokeproof shutters. For example, when a waterproof shutter is used as a panel shutter for both management and normal opening and closing of building openings, it is sometimes desired to provide fireproof and smokeproof performance when the opening is normally fully closed. In a fireproof and smokeproof shutter, the fitting parts of the upper and lower panels need to have a joint structure, but the shutter disclosed in Patent Document 1 does not meet the requirements for fireproofing, and the waterproof structure disclosed in Patent Document 1 cannot be adopted as is. [Patent Document 1] Patent Publication 2015-175155 DISCLOSURE OF THEINVENTION [Problem to be solved by the invention]

[0005] An object of the present invention is to provide an improved water-stopping structure for a waterproof shutter. [Means for solving the problem]

[0006] The technical means adopted in the present invention are: A shutter curtain made up of multiple panels, Left and right guide bodies for receiving the width direction ends of the shutter curtain; A vertical compression means for vertically compressing the shutter curtain in a fully closed position; In a waterproof shutter equipped with An elastic water-stopping member is provided on either an indoor side portion of a lower end portion of an upper panel or an indoor side portion of an upper end portion of a lower panel of adjacent panels, the elastic water-stopping member extending in the width direction of the panel, and the other serves as a pressing portion that presses the elastic water-stopping member in a vertical pressing position, When the shutter curtain is vertically compressed, the pressing portion is pressed against the elastic water-stopping member, so that a water-stopping structure is formed across the width of the panels in the indoor side areas of the vertically adjacent panels. This is the water-stopping structure of a waterproof shutter. In one embodiment, the elastic water-stopping member is provided on the indoor side of the upper end portion of the lower panel, The pressed portion is the indoor side portion near the lower end of the upper panel. In one aspect, a cladding structure is formed between the lower end portion of the upper panel and the upper end portion of the lower panel, located on the outdoor side of a water-stopping structure formed in the indoor portion of adjacent panels above and below.

[0007] In one embodiment, a portion (1661) of the outer facing surface of the elastic water-stopping member is approximately flush with the indoor facing surface of the panel in a non-vertical compression position, and bulges toward the indoor side beyond the indoor facing surface of the panel in a vertical compression position. In one embodiment, the elastic water-stopping member extends in the width direction of the panel and is fitted into a groove portion formed integrally with the panel, The elastic water-stopping member includes a first portion (16A+16B) located inside the groove and a second portion (16B) located outside the groove, The portion (1661) of the outer visible surface of the elastic water-stopping member is the outer visible surface of the second portion.

[0008] In one embodiment, the waterproof shutter is provided with a horizontal compression means for horizontally compressing the shutter curtain in a fully closed position from the outdoor side to the indoor side, The guide body is provided with an elastic member in the height direction, which is pressed against the indoor facing surface of the shutter curtain when the guide body is pressed horizontally, When horizontally compressed, the portion (1661') of the bulging outer visible surface is adapted to be in pressure contact with the elastic member.

[0009] In one embodiment, the outer surface of the groove is formed from a protrusion (310) that is flush with the interior facing surface of the panel, In the vertical compression position, a portion of the outer visible surface of the second portion of the elastic water-stopping member adjacent to the outer visible surface of the first portion is in close contact with the tip edge of the protruding piece. In one embodiment, at least a portion of the outer visible surface of the first portion of the elastic water-stopping member adjacent to the outer visible surface of the second portion is in close contact with the inner surface of the protruding piece.

[0010] In one embodiment, the panel has a stepped indoor facing surface (324) located on the outdoor side relative to the indoor facing surface of the panel, The inner surface of the groove is formed from a portion of the stepped indoor facing surface that faces the protruding piece (310), The inner facing surface (165) of the second portion of the elastic water-stopping member is in close contact with the inner facing surface of the stepped roof at least in the vertically compressed position.

[0011] In one embodiment, the elastic water-stopping member includes a hard elastic portion located within the groove, and a soft elastic portion having a portion located outside the groove. In one embodiment, the groove portion has a bottom portion, an inner surface of an outer facing piece (310) rising from the outer end portion of the bottom portion, and a first portion (3240) of the inner facing surface facing the outer facing piece of the inner facing surface located inside the bottom portion, and has a generally U-shaped cross section. the inner facing surface includes a second portion (3241) of the inner facing surface adjacent the first portion (3240) of the inner facing surface and located outside the groove; The hard elastic portion of the elastic water-stopping member is fitted into the groove portion, A portion of the soft elastic portion of the elastic water-stopping member is located within the groove portion. In one embodiment, the portion of the soft elastic portion located within the groove is in intimate contact with the inner surface of the outer end piece. In one embodiment, the hard elastic portion includes a bottom surface, an inner facing portion, an outer facing portion, and a first connecting surface, the soft elastic portion includes an abutment surface, an inner facing surface, an outer facing surface, and a second connecting surface in close contact with the first connecting surface, the first connection surface of the hard elastic portion includes a first horizontal surface and a first inclined surface inclined from an outer side of the first horizontal surface toward a bottom surface, the second connection surface of the soft elastic portion includes a second horizontal surface and a second inclined surface inclined from an outer side of the second horizontal surface so as to move away from the upper surface, the first horizontal surface and the second horizontal surface, and the first inclined surface and the second inclined surface are in close contact with each other, The outer facing surface of the soft elastic portion includes a first portion (1660) of the outer facing surface that is in close contact with the inner surface of the outer facing piece, and a second portion (1661) of the outer facing surface that is located outside the groove portion, At least the first portion (1660) of the outer visible surface and a portion surrounded by the second inclined surface are located within the groove.

[0012] In one aspect, in the vertical compression position of the elastic water-stopping member, the second portion (1661) of the outer visible surface bulges outward further than the outer surface of the outer visible piece, and the portion of the second portion (1661) of the outer visible surface adjacent to the first portion (1660) of the outer visible surface is in close contact with the tip edge of the outer visible piece (310). In one embodiment, the inner attachment portion of the hard elastic portion includes an inner attachment surface and a plurality of protrusions formed on the inner attachment surface and extending in the panel width direction, The inner facing portion of the hard elastic portion abuts against the first portion of the inner facing surface of the groove portion via the ridge. In one embodiment, the inner facing surface (161) of the hard elastic portion and the inner facing surface (165) of the soft elastic portion are flush with each other, In a non-vertical compression position, the inner facing surface (165) of the soft elastic portion is in close proximity to the second portion (3241) of the inner facing surface of the groove portion, and in a vertical compression position, is in close contact with the second portion (3241) of the inner facing surface. In one embodiment, a protrusion is formed on the outer facing portion of the hard elastic portion, protruding at an angle away from the bottom of the groove portion, and the hard elastic portion is in close contact with the inner surface of the outer facing portion via the protrusion. Effect of the Invention

[0013] According to the present invention, when the shutter curtain is vertically compressed, a water-stopping structure is effectively formed, which is made up of elastic water-stopping members extending across the width of the panels on the indoor side of the vertically adjacent panels. [Brief description of the drawings]

[0014] [Figure 1] FIG. 2 is a front view of the waterproof shutter (fully closed position) according to the embodiment, as viewed from the indoor side. [Diagram 2] 1 is a vertical cross-sectional view of a waterproof shutter according to this embodiment, with the left side being the outdoor side and the right side being the indoor side. [Diagram 3]This is a front view of the shutter curtain of the waterproof shutter of this embodiment as seen from the indoor side, and a diagram showing the vertical compression mechanism above the shutter curtain. [Figure 4] This is a diagram showing a longitudinal cross-sectional view of the shutter curtain of the waterproof shutter of this embodiment and the vertical compression mechanism, where the left figure shows the state before the shutter curtain is in the fully closed position, the center figure shows the shutter curtain in the fully closed position (non-vertical compression state), and the right figure shows the shutter curtain in the fully closed position (vertical compression state). [Diagram 5] 34A is a cross-sectional view of the end portion in the opening width direction of the panel shutter in the fully closed position (non-horizontal compression state), and is a partially enlarged view of the upper part of FIG. 34. [Figure 6] 30 is a cross-sectional view of an end portion in the opening width direction of the panel shutter in a fully closed position (horizontally pressed state), and is a partially enlarged view of the upper part of FIG. 29. [Figure 7] FIG. 11 is a partial vertical cross-sectional view of a panel shutter in a fully closed position (vertical compression state / horizontal compression state). [Figure 8] 1A and 1B are a top view and a front view of a top panel according to the present embodiment as viewed from the indoor side. [Figure 9] FIG. 9 is a partially enlarged view of the top view of FIG. [Figure 10] FIG. 2 is a vertical cross-sectional view (viewed from direction A) of the top panel according to the present embodiment, with the left side being the outdoor side and the right side being the indoor side. [Figure 10A] FIG. 2 is a side view of the top panel according to the present embodiment, with the left side being the indoor side and the right side being the outdoor side. [Figure 11] 1A and 1B are a top view and a front view, respectively, of a panel (intermediate panel) according to the present embodiment, as viewed from the indoor side. [Figure 11A] FIG. 2 is a front view of the panel (middle panel) according to the present embodiment, showing the spaces partitioned within the panel. [Figure 12] FIG. 12 is a partially enlarged view of the top view of FIG. [Figure 13] FIG. 2 is a vertical cross-sectional view (viewed from direction B) of a panel (intermediate panel) according to the present embodiment, with the left side being the outdoor side and the right side being the indoor side. [Figure 14]2A and 2B are a front view and a bottom view of a panel (middle panel) according to the present embodiment, as viewed from the outdoor side. [Figure 15] FIG. 2 is a side view of the panel (middle panel) according to the present embodiment, with the left side being the indoor side and the right side being the outdoor side. [Figure 16] 2 is a front view of the bottom panel according to the embodiment, seen from the indoor side. FIG. [Figure 17] FIG. 2 is a vertical cross-sectional view (viewed from direction C) of the bottom panel according to the present embodiment, with the left side being the outdoor side and the right side being the indoor side. [Figure 17A] FIG. 2 is a side view of the bottom panel according to the present embodiment, with the left side being the indoor side and the right side being the outdoor side. [Figure 18] FIG. 1 shows the lower end portion of a bottom panel (movable seat plate) according to this embodiment, with the upper figure being a front view and the lower figure being a bottom view. [Figure 19] FIG. 5 is a partially enlarged view of the center diagram of FIG. 4, showing the state in which the lower end portion of the upper panel and the upper end portion of the lower panel fit together in the fully closed position and non-vertical compression state. [Figure 20] This is a partially enlarged view of the right side of Figure 4, showing the state in which the lower end portion of the upper panel and the upper end portion of the lower panel fit together in the fully closed position and vertically compressed state. [Figure 21] The left image shows the upper and lower panels descending in a vertical position, the center image shows the upper panel displaced toward the inside of the room relative to the lower panel as it descends, and the right image shows the upper panel displaced toward the outside of the room relative to the lower panel as it descends. [Figure 22] FIG. 5 is a partially enlarged view of the left side of FIG. 4, showing the lower end portion of the bottom panel before implantation. [Diagram 23] FIG. 5 is a partially enlarged view of the center part of FIG. 4, showing the lower end part of the bottom panel when the device is placed on the floor (non-vertical compression state). [Figure 24] FIG. [Diagram 25] FIG. 5 is a diagram showing a state in which the elastic water-stopping member is fitted into a groove in the indoor side portion of the panel (a partially enlarged view of the indoor side portion in the left diagram of FIG. 4). [Figure 26]21 is a partially enlarged view of the indoor side portion in FIG. 20, illustrating a state in which the elastic water-stopping member fitted in the groove is vertically compressed in the fully closed position. FIG. [Figure 27] 23 is a diagram showing a state in which the elastic water-stopping member is fitted into a groove in the indoor side portion of the base panel (non-pressed state), and is a partially enlarged view of the indoor side portion in FIG. 22. FIG. [Figure 28] This shows the state in which the elastic water-stopping member fitted into the groove is vertically compressed in the fully closed position (a partially enlarged view of the outdoor side part in the right diagram of Figure 4). [Figure 29] This is a cross-sectional view of the panel shutter of this embodiment in a fully closed position (horizontal compression state), where the upper figure is a cross-sectional view of the intermediate panel or bottom panel, the middle figure is a cross-sectional view of the movable seat plate portion of the bottom panel, and the lower figure is a bottom view of the seat plate. [Diagram 30] 1 is a diagram showing the positional relationship between an elastic water-stopping member and a watertight rubber member provided across the width of the indoor side of the shutter curtain. FIG. [Diagram 31] 1 is a vertical cross-sectional view of a lower portion including a bottom panel in a fully closed position (vertical compression state / horizontal compression state) of the panel shutter according to the present embodiment. FIG. [Diagram 32] FIG. 23 is a partially enlarged view of FIG. 22, showing a relay cable of the cord reel (a cover for storing the relay cable is not shown). [Diagram 33] 10 is a partially enlarged view showing the portion of the cord reel from which the cord is pulled out on the indoor facing surface of the bottom panel. FIG. [Diagram 34] This is a cross-sectional view of the panel shutter of this embodiment in a fully closed position (non-horizontal compression state), where the upper figure is a cross-sectional view of the intermediate panel or top panel, the middle figure is a cross-sectional view of the movable seat plate portion of the bottom panel, and the lower figure is a view of the bottom of the seat plate. [Diagram 35] 13A and 13B are longitudinal cross-sectional views of the shutter curtain in a fully closed position (non-vertical compression state), the left figure being a longitudinal cross-sectional view of the middle part of the panel in the width direction, and the right figure being a longitudinal cross-sectional view of the end part of the panel in the width direction. [Diagram 36] This is a partially enlarged view of the right side of Figure 35. [Figure 37]1 is a diagram showing the positional relationship between an airtight member provided across the width of the outdoor portion of the shutter curtain and a smoke-blocking material provided on a guide body. [Figure 38] 13A and 13B are diagrams showing another embodiment of the airtight structure when the shutter curtain is in a fully closed position. [Figure 39] 13A and 13B are diagrams showing still another embodiment of the airtight structure when the shutter curtain is in a fully closed position. [Diagram 40] FIG. 2 is a block diagram showing the operation flow of the waterproof shutter according to this embodiment in the event of a fire. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0015] [A] Panel shutter configuration The waterproof shutter according to this embodiment is composed of a panel shutter and has a basic structure of a panel shutter. As shown in Figs. 1 to 4, the shutter curtain 1 of the waterproof shutter according to this embodiment is composed of a top panel 2 (sometimes abbreviated to "panel 2"), a plurality of intermediate panels 3 (hereinafter referred to as "panel 3"), and a bottom panel 4 (sometimes abbreviated to "panel 4") connected in the panel height direction. In addition, it should be noted that when "panel" is referred to in this specification, it can basically include the top panel 2, the panel 3, and the bottom panel 4. In this embodiment, the bottom panel 4 is composed of a bottom panel main body 4' (sometimes abbreviated to "panel main body 4'" or "main body 4'") and a movable seat plate 6 (sometimes abbreviated to "seat plate 6"). The waterproof shutter according to this embodiment has fireproof and smokeproof properties in addition to waterproof properties, and each of the panels 2, 3, and 4 is a steel panel formed from steel that has excellent heat resistance and fire resistance, which is different from conventional aluminum panels. The detailed configuration of each panel 2, 3, 4, and the waterproof structure and fireproof and smokeproof structures of the waterproof shutter according to this embodiment will be described in detail later. Please note that in this specification, the terms "outdoor side" and "indoor side" are used to indicate the relative positions of parts of components in addition to indicating the positions of the "outdoor side" and "indoor side" on either side of the opening that is opened and closed by the shutter curtain 1.

[0016] The basic structure of a panel shutter will now be described. A shaft 10 equipped with a guide roller 11 protrudes from both widthwise ends of each of the panels 2, 3, and 4 that make up the shutter curtain 1 (see Figs. 5 and 6), and each of the panels 2, 3, and 4 is connected to and suspended by a chain (not shown) via the shaft 10 to form the shutter curtain 1. The structure of suspending multiple panels by a chain in a panel shutter is well known to those skilled in the art, so a detailed explanation will be omitted.

[0017] The left and right guide bodies 5 are erected at both ends of the width direction of the building opening, and are adapted to receive and guide both ends of the width direction of the shutter curtain 1 in a vertical position. As shown in Figs. 5 and 6, the guide body 5 is a structure that is formed in a U-shape in cross section from a first side wall 50 on the outdoor side and a second side wall 51 on the indoor side, which are spaced apart and opposed to each other, and extends in the opening height direction. The tip sides of the first side wall 50 on the outdoor side and the second side wall 51 on the indoor side are formed with an outdoor side bent piece 500 and an indoor side bent piece 510 so as to face each other, and the opening groove between the tips of the outdoor side bent piece 500 and the indoor side bent piece 510 is adapted to receive the width direction end of the shutter curtain 1 (top panel 2, panel 3, bottom panel 4). The bottom wall 52 of the guide body 5 is provided with a guide member 53, which is a long member that extends vertically in the height direction and contacts and guides the outdoor side peripheral surface of the guide roller 11. Long fins 54 (e.g., made of nylon) extending in the height direction are formed on the outside of the outdoor-side folded piece 500 and the indoor-side folded piece 510 at the tip sides of the outdoor-side first side wall 50 and the indoor-side second side wall 51. The upper end of the guide member 53 extends into the storage space above the opening and has an upper extension 5' (see FIG. 2), which is configured to be able to contact the guide roller 11 from both the outdoor side and the indoor side.

[0018] In the storage space above the opening, a sprocket 12 is provided at approximately the upper end of the upper extension 5' for winding a chain around it, and the opening / closing device M rotates the sprocket 12 to lift or unleash the chain, thereby raising or lowering the shutter curtain 1 to open or close the building opening. The storage space for the shutter curtain 1 above the opening extends from above the opening toward the indoor side, and the storage space is provided with a storage rail 13 that extends gently downward from the front (outdoor side) to the rear (indoor side). By lifting the chain, the panels 2 and 3 are transferred to the storage rail 13 via the sprocket 12, and the guide rollers 11 are guided by the storage rail 13 and sequentially sent to the rear of the storage space, so that the panels 2, 3, and 4 are stored while being held hanging down parallel to each other.

[0019] The panel shutter according to this embodiment is an electric panel shutter, and the electric opening and closing of the shutter curtain 1 is performed by operating an opening / closing switch (not shown) in the switch boxes SB1-3. When the opening switch (not shown) is pressed in the fully closed state and the opening / closing device M rotates the sprocket 12 in the chain lifting direction, the shutter curtain 1, which is in a vertical position in the fully closed state, rises as the chain rises, with both ends in the width direction being guided by the vertical guide body 5, and is sequentially transferred from the top panel 2 to the storage rails 13 extending laterally from the upper extension 5' of the guide body 5, and is stored in parallel in the storage space, and the opening is opened.

[0020] When the opening is fully open, a closing switch (not shown) is pressed and the opening / closing machine M drives the sprocket 12 to rotate in the chain payout direction. The panels 2, 3, which have been stored in parallel, are guided by the storage rails 13 with the guide rollers 11 at both ends of the width of the panels guided successively from the rear (indoor side) of the storage space to the front (outdoor side) of the sprocket 12. As they pass the sprocket 12, they assume a vertical position above and below each other in the height direction and descend while being guided by the guide body 5, closing the opening.

[0021] When the shutter curtain 1 descends, the upper end of the lower panel and the lower end of the upper panel of any two adjacent panels (top panel 2 and panel 3, panels 3 together, and panels 3 and bottom panel 4) are spaced apart (see the left diagram in FIG. 4 and the left diagram in FIG. 21). When the shutter curtain descends, after the lower end of the bottom panel 4 hits the floor, the shutter curtain 1 continues to descend a predetermined distance, so that the upper end of the lower panel and the lower end of the upper panel of any two adjacent panels come into at least partial contact with each other, resulting in a fully closed state (see the center diagram in FIG. 4 and FIG. 19).

[0022] The bottom panel 4 of the shutter curtain 1 according to this embodiment is composed of a bottom panel main body 4' and a movable seat plate 6 provided at the lower end of the bottom panel main body 4', and the first obstacle detection means is composed of the movable seat plate 6 and a detection switch SW provided at the lower end of the bottom panel main body 4'. When the movable seat plate 6 at the lower end of the bottom panel 4 hits the floor or an obstacle and moves upward by a predetermined amount, the detection switch SW turns ON and an obstacle detection signal is sent to the control unit of the opening / closing machine M via the cord reel CR (wired type), and the shutter curtain 1 stops during its downward movement. The control unit has preset upper and lower limits for the shutter curtain 1, and when an obstacle detection signal is received above the lower limit, it is determined that an obstacle has been detected while the shutter curtain is descending, and the shutter curtain 1 is controlled to stop for 1 second and then reverse and rise for 1.5 seconds while descending, and when an obstacle detection signal is received below the lower limit, it is determined that the shutter curtain is in a fully closed position (has landed on the floor FL), and the shutter curtain 1 stops descending without reversely rising. Also, the transmission of the obstacle detection signal is not limited to a wired system, and may be a wireless system (for example, wirelessly transmitted by radio waves).

[0023] A photoelectric sensor 14, exemplified as a second obstacle detection means, is provided at a predetermined height from the floor below the opening. In the illustrated embodiment, four photoelectric sensors 14 are provided at heights of 150 mm and 500 mm from the floor, located on the outdoor side and indoor side, respectively. The height positions of the photoelectric sensors 14 are merely examples, and are not limited to these. In this embodiment, if an obstacle is detected while the shutter curtain is descending, the descending shutter curtain stops for, for example, one second, and then reverses and rises for 1.5 seconds.

[0024] The basic structure of the panel shutter has been described with reference to the drawings, but the basic structure of the panel shutter is well known to those skilled in the art, and further detailed description will be omitted. In addition, many modified and improved examples of the panel shutter are known to those skilled in the art, and it should be noted that the structure of the panel shutter that can be applied to the waterproof shutter according to the present invention is not limited to the embodiment shown in the drawings.

[0025] [B] Waterproof shutter configuration The panel shutter according to this embodiment functions as a waterproof shutter by providing a water-stopping structure to the shutter curtain 1 in the fully closed state. In this embodiment, the means for making the panel shutter in the fully closed state waterproof is composed of a vertical compression mechanism 7 that vertically compresses the shutter curtain 1 in the fully closed state downward, and a horizontal compression mechanism 8 that horizontally compresses the shutter curtain 1 compressed vertically by the vertical compression mechanism 7 toward the indoor side as a whole. The configurations and operations of the vertical compression mechanism 7 and horizontal compression mechanism 8 are described below, but reference can be made to Patent Document 1 for further details on the configuration of the waterproof shutter.

[0026] [B-1] Vertical compression mechanism As shown in Fig. 1, a plurality of vertical compression mechanisms 7 are provided in the storage space above the opening across the width of the opening. As shown in Figs. 3 and 4, the vertical compression mechanism 7 includes a power cylinder 70, which is exemplified as an actuator disposed in the storage space above the opening, and a pressing section (consisting of a link mechanism) 72, which is provided at the tip of a piston rod 71 of the power cylinder 70 and abuts against and presses the upper end of the uppermost panel 2 in the fully closed state. When the opening is in the fully closed state, the piston rod 71 is lowered and the pressing section 72 abuts against the upper end of the uppermost top panel 2 to press downward, thereby compressing the shutter curtain 1 in the fully closed state vertically downward.

[0027] When the shutter curtain 1 is in a fully closed state, it is vertically compressed, so that an elastic water-stopping member (in this embodiment, elastic water-stopping member 16) extending over the entire width of the panel is pressed between the lower end portion of the upper panel and the upper end portion of the lower panel of two adjacent panels (panel 2 and panel 3, panel 3 and panel 3, panel 3 and panel 4) vertically, forming a water-stopping structure. Between the panel body 4' of the bottom panel 4 and the movable seat plate 6, an elastic water-stopping member (in this embodiment, indoor side elastic water-stopping member 16β) extending over the entire width of the panel is pressed, forming a water-stopping structure. Between the movable seat plate 6 and the floor surface FL, an elastic water-stopping member (in this embodiment, elastic water-stopping member 19) extending over the entire width of the panel is pressed, forming a water-stopping structure.

[0028] 2, the vertical compression mechanism 7 is provided offset toward the outside with respect to the ascending and descending paths of each panel so as not to impede the ascending and descending of each panel in the storage space above the opening. Therefore, in order to press the upper end of the top panel 2, which is the uppermost panel in the fully closed state, the piston rod 71 of the power cylinder 70 protrudes diagonally downward, but a pressing force acts vertically on the upper end of the top panel 2 by a pressing part 72 made of a link mechanism.

[0029] As shown in Figures 1 and 3, in this embodiment, three vertical compression mechanisms 7 are provided at intervals in the opening width direction. More specifically, one vertical compression mechanism 7 is provided in the center of the opening width direction, and vertical compression mechanisms 7 are provided at positions closer to the left and right guide bodies 5, with the interval between the central vertical compression mechanism 7 and the left vertical compression mechanism 7 being the same as the interval between the central vertical compression mechanism 7 and the right vertical compression mechanism 7. The number of vertical compression mechanisms 7 is not limited, and an appropriate number is selected depending on the width dimension (opening width dimension) of the shutter curtain 1 (panels 2, 3, 4) and the like.

[0030] The vertical compression mechanism 7 according to this embodiment includes a first limit switch and a second limit switch. When the vertical compression mechanism 7 is in a non-operating state, a portion of the movable part of the vertical compression mechanism 7 is in contact with the first limit switch, and the second limit switch is in a non-contact state. When the vertical compression mechanism 7 is operated and the piston rod 71 is protruded to a predetermined compression position, the first limit switch is in a non-contact state, and a portion of the movable part is in contact with the second limit switch. The first limit switch and the second limit switch constitute a vertical compression state detection means. Specifically, when the first limit switch is ON (the second limit switch is OFF), it is in a non-vertical compression state, when the first limit switch is OFF and the second limit switch is OFF, it is in a vertical compression operation or a vertical compression release operation, and when the second limit switch is ON (the first limit switch is OFF), it is detected that the vertical compression state is in progress. In this embodiment, when the first limit switch is switched from OFF to ON, compression by the vertical compression mechanism 7 is released, and when the second limit switch is switched from OFF to ON, compression by the vertical compression mechanism 7 is completed.

[0031] [B-2] Horizontal compression mechanism As shown in FIG. 1, horizontal compression mechanisms 8 are provided at the left and right ends of the storage space above the opening in the width direction of the opening. As with the vertical compression mechanism 7, the horizontal compression mechanism 8 is provided biased toward the outdoor side with respect to the ascending and descending path of the panels 2, 3, 4 so as not to impede the ascending and descending of the panels 2, 3, 4 in the storage space above the opening. As shown in FIG. 1, the horizontal compression mechanism 8 includes a power cylinder 80, which is an example of an actuator disposed in the storage space above the opening, and a horizontal pressing member 82 (see FIG. 5 and FIG. 6) that operates in conjunction with the up and down movement of a piston rod 81 of the power cylinder 80. The horizontal pressing member 82 of the horizontal compression mechanism 8 is an elongated member having a rectangular cross-sectional shape and extending in the height direction, and is provided on the inner surface of the tip side of the first side wall 50 on the outdoor side of the guide body 5. A watertight rubber member 55, which is an elongated member extending in the height direction, is provided on the inner surface of the tip side of the second side wall 51 on the indoor side. The horizontal compression mechanism 8 presses both widthwise ends of the indoor side of the shutter curtain 1 in the fully closed position (vertical compression state) against a watertight rubber member 55, thereby forming a waterproof structure in the height direction at both widthwise ends of the shutter curtain 1 in the fully closed position.

[0032] 5 and 6, the horizontal pressing member 82 extends in the indoor / outdoor direction along the outdoor-side bent piece 500 in a plan view, and includes a first member (outdoor-side member) 820 that is long and U-shaped in cross section and extends vertically along the guide body 5, a second member (indoor-side member) 821 that is long and U-shaped in cross section and extends vertically along the guide body 5, and an operating rod 822. The operating rod 822 is a long member that extends vertically along the guide body 5, and an upper end side of the operating rod 822 is connected to the tip of the piston rod 81 of the power cylinder 80, and an operating mechanism is composed of the operating rod 822 and the power cylinder 80 (including the piston rod 81) that moves the operating rod 822 up and down. In this embodiment, the operating rod 822 is configured to be pulled up in conjunction with the downward protruding motion of the piston rod 81, and the second member 821 moves horizontally toward the indoor side in conjunction with the upward movement of the operating rod 822, pressing the outdoor side portion of the shutter curtain 1 with the pressing surface 8210, and pressing the indoor side portion against the watertight rubber member 55.

[0033] The horizontal compression mechanism 8 according to this embodiment includes a first limit switch and a second limit switch. When the horizontal compression mechanism 8 is in a non-operating state, a portion of the movable part of the horizontal compression mechanism 8 is in contact with the first limit switch, and the second limit switch is in a non-contact state. When the horizontal compression mechanism is operated and the piston rod 81 is protruded to a predetermined compression position, the first limit switch is in a non-contact state, and a portion of the movable part is in contact with the second limit switch. The first limit switch and the second limit switch constitute a horizontal compression state detection means. Specifically, when the first limit switch is ON (the second limit switch is OFF), it is in a non-horizontal compression state, when the first limit switch is OFF and the second limit switch is OFF, it is in a horizontal compression operation or a horizontal compression release operation, and when the second limit switch is ON (the first limit switch is OFF), it is detected that the horizontal compression state is in progress. In this embodiment, when the first limit switch is switched from OFF to ON, compression by the horizontal compression mechanism 8 is released, and when the second limit switch is switched from OFF to ON, compression by the horizontal compression mechanism 8 is completed.

[0034] [B-3] Middle pillar As shown in Figures 1 and 2, in this embodiment, the waterproof shutter is equipped with a movable center post 9. The center post 9 is located on the indoor side of the shutter curtain 1 in a fully closed state, and is installed adjacent to and facing the indoor side of the shutter curtain 1. The center post 9 is adapted to resist water pressure acting from the outdoor side to the indoor side of the shutter curtain 1 in a fully closed position. In one embodiment, the center post 9 is installed by moving the shutter curtain 1 in a fully closed position to a waterproof state (compressing in the vertical direction and the horizontal direction) and then moving the center post 9 from the stored position to the installed position and installing it adjacent to and facing the indoor side of the shutter curtain 1.

[0035] [B-4] Waterproof shutter operation control device The waterproof shutter according to this embodiment can be used as a so-called management panel shutter, and is used for normal opening and closing of building openings, and also functions as a waterproof shutter in emergencies such as when heavy rain is expected. The operation of the electric waterproof shutter according to this embodiment is controlled by input from the operation unit.

[0036] As shown in Fig. 2, the waterproof shutter according to this embodiment includes a first outdoor switch box SB1, a second outdoor switch box SB2, and an indoor switch box SB3, i.e., three operating units. The first outdoor switch box SB1 and the indoor switch box SB3 are located at a height of 1500 mm from the floor surface so that an operator can easily operate them while standing. The second outdoor switch box SB2 is located at a height of more than 3000 mm (the expected maximum water level WL) from the floor surface. The above height positions are merely examples and are not limiting.

[0037] The operation panel in the switch box is provided with an open button, a close button, a stop button, a compression button, a compression release button, and an emergency close button. The operation of the waterproof shutter is controlled based on input from these buttons. More specifically, according to instructions from the button input, the operation of the opening / closing mechanism M (raising and lowering operation of the shutter curtain 1), the vertical compression mechanism 7 (vertical compression operation and vertical compression release operation of the shutter curtain 1 in the fully closed state), and the horizontal compression mechanism 8 (horizontal compression operation and horizontal compression release operation of the shutter curtain 1 in the vertical compression state) is controlled via the control unit. Each button will be explained below.

[0038] The waterproof shutter of this embodiment is equipped with a fully closed state detection means (e.g., consisting of a lower limit switch and a seat switch) that detects when the shutter curtain 1 is in a fully closed opening state, a vertical compression state detection means (first limit switch, second limit switch) that detects when the shutter curtain 1 is in a vertical compression state, and a horizontal compression state detection means (first limit switch, second limit switch) that detects when the shutter curtain 1 is in a horizontal compression state.

[0039] When the shutter is in the pressure release state (vertical pressure release state and horizontal pressure release state) and is not in the fully open position, pressing the open button will cause the shutter curtain 1 to rise and stop in the fully open position. When the shutter is not in the fully closed position, pressing the close button will cause the shutter curtain to fall and stop in the fully closed position. When the stop button is pressed while the shutter is operating, or during compression or pressure release, the operating shutter curtain 1 will stop operating at any position.

[0040] When the shutter is not in the fully closed position and not in a compressed state (vertical compression state and horizontal compression state), pressing the compression button starts the compression action to obtain a waterproof structure. When the pressing action of the vertical compression mechanism 7 is completed (when the second limit switch of the vertical compression mechanism 7 turns ON, a vertical compression state signal is generated), the horizontal compression mechanism 8 starts the pressing action, and compresses the shutter curtain 1, which has been compressed in the vertical direction, toward the indoor side as a whole. When the shutter is not in the fully closed position, pressing the emergency close button can lower the shutter curtain with a pushing action.

[0041] When the shutter is in a compressed state, or when it is in the fully closed position and not in a compressed released state, pressing the compression release button starts the compression release operation. In one procedure, when the compression release button is pressed, first the horizontal compression mechanism 8 starts the release operation, and when the release operation of the horizontal compression mechanism 8 is completed (when the first limit switch turns ON, a horizontal compression state release signal is generated), the vertical compression mechanism 7 starts the release operation. When the compression release operation of the vertical compression mechanism 7 is completed, the first limit switch of the vertical compression mechanism 7 turns ON and a vertical compression state release signal is generated. If the horizontal compression state has been released, the release operation starts from the vertical compression state.

[0042] In one embodiment, in addition to operation input from the first outdoor switch box SB1, the second outdoor switch box SB2, and the indoor switch box SB3, remote operation input from a management room or the like (operation while checking safety with a security camera or the like) is possible. A series of shutter operations can be controlled by remote control signals, and it is also possible to perform compression and release operations by remote control.

[0043] [C] Shutter curtain configuration As shown in Figures 1 to 4, the shutter curtain 1 of the waterproof shutter according to this embodiment is composed of a top panel 2, multiple panels 3, and a bottom panel 4 connected in the panel height direction. When the shutter curtain 1 is raised or lowered and in a fully closed position, the top panel 2, multiple panels 3, and bottom panel 4 are in a vertical position. The explanation of each part of the top panel 2, multiple panels 3, and bottom panel 4 (specifically, vertical, hanging, horizontal, etc.) will be mainly based on the vertical position of the panels.

[0044] [C―1] Top panel [C-1-1] Outline of the top panel The configuration of the top panel 2 will be described with reference to Fig. 8 to Fig. 10. The top panel 2 is a roughly horizontally rectangular plate-like body with a predetermined width, height, and thickness (projected dimensions) extending in the opening width direction, and is made up of an outdoor facing surface 20, an indoor facing surface 21, an upper surface portion 22, a lower surface portion 23, and side surfaces 24 on both ends in the width direction. As shown in Fig. 8, the top panel 2 has the same width dimension as a whole.

[0045] As shown in Fig. 10, the lower end portion of the outdoor facing surface 20 of the top panel 2 is formed in a stepped portion recessed toward the indoor facing surface 21. Specifically, the outdoor facing surface 20 is composed of a main surface portion 200 and a stepped portion formed below the main surface portion 200, and the stepped portion is formed from a lower end edge portion 201 of the lower end of the main surface portion 200 and a lower outdoor facing surface (step facing surface) 202 that is displaced toward the indoor facing surface 21 side and hangs down relative to the vertically oriented main surface portion 200. The upper end of the outdoor facing surface 20 and the upper end of the indoor facing surface 21 are at approximately the same height, and the lower end of the indoor facing surface 21 extends downward beyond the lower end of the outdoor facing surface 20 (including the lower outdoor facing surface 202).

[0046] 8, the upper surface portion 22 of the top panel 2 is composed of a horizontal upper surface 220 and a plurality of recesses 221 formed at intervals in the width direction of the panel, and each recess 221 is formed in a U-shape in front view by opposing vertical surfaces 222, 222 and a bottom surface 223. The bottom surface 223 of the recess 221 is formed from a thick pressure plate.

[0047] The underside portion 23 of the top panel 2, when viewed from the side, is formed of an outdoor-side underside 230, an outdoor-side inclined surface 231 extending from the indoor-side portion of the outdoor-side underside 230 toward the indoor side and upward, a central horizontal plane 232 extending horizontally from the indoor-side portion of the outdoor-side inclined surface 231 toward the indoor side, an indoor-side inclined surface 233 extending from the indoor-side portion of the central horizontal plane 232 toward the indoor side and downward, an indoor-side vertical surface 234 hanging down from the indoor-side portion of the indoor-side inclined surface 233, and an indoor-side underside 235 extending horizontally toward the indoor side from the lower end of the indoor-side vertical surface 234.

[0048] As shown in FIG. 10, a cushioning / airtight member 15 is provided on the underside 23 of the top panel 2. However, the configuration of the lower end portion of the top panel 2 (including the lower outdoor facing surface 202, the underside 23, and the cushioning / airtight member 15) is substantially the same as the configuration of the lower end portion of the panel 3. For details of the configuration of the lower end portion of the top panel 2, please refer to the configuration of the lower end portion of panel 3 described below.

[0049] [C-1-2] Surface material of top panel The top panel 2 is assembled from a number of steel plates formed into a prescribed shape. In this embodiment, the main surface 200 of the outdoor facing surface 20 of the top panel 2 is formed from a first surface material, and a folded piece is integrally formed at each of the upper and lower ends of the first surface material, with the folded piece at the upper end forming the outdoor end of the top surface 22 and the folded piece at the lower end forming the lower edge 201.

[0050] The indoor facing surface 21 of the top panel 2 is formed from a second surface material, and a folded piece is integrally formed at each of the upper and lower ends of the second surface material, with the folded piece at the upper end forming the upper surface 220 of the upper surface portion 22 and the folded piece at the lower end forming the indoor facing lower surface 235 of the lower surface portion 23.

[0051] The lower outdoor facing surface 202 of the outdoor facing surface 20 and the outdoor side portion of the underside portion 23 are made of a third surface material folded into a predetermined shape, and the indoor side portion of the underside portion 23 is made of a fourth surface material folded into a predetermined shape, with portions of the third surface material and the fourth surface material overlapping to form a central horizontal plane 232, and portions of the fourth surface material and the folded piece at the lower end of the second surface material overlapping to form the indoor side underside surface 235.

[0052] Side portion 24 is formed from a surface portion having a shape following the cross-sectional shape of top panel 2, and a fifth surface material consisting of a pair of facing pieces, which are abutted and connected (welded) to the inner surfaces of outdoor facing surface 20 and indoor facing surface 21, respectively. The upper end of the fifth surface material forming side portion 24 abuts against upper surface 200 of upper surface portion 22, and the lower end abuts at least partially against lower surface portion 23. Side portion 24 is formed with hole portion 240 so as to straddle horizontal surface 250 of intermediate horizontal reinforcement member 25, and a gap 241 and an opening 242 are formed in the lower portion as drainage openings (see FIG. 10A).

[0053] Each vertical surface 222 of the recess 221 in the upper surface portion 22 of the top panel 2 is made up of a projection piece forming the vertical surface 222 and a sixth surface material having an L-shaped cross section from the indoor side facing piece, with the outdoor side edge of the projection piece abutting the inner surface of the outdoor side facing surface 20, and the indoor side facing piece abutting and connected (welded) to the inner surface of the indoor side facing surface 21. As described above, the bottom surface 223 of the recess 221 is formed from a thick pressing plate.

[0054] Although the first to sixth surface materials formed into predetermined shapes have been described above, these are merely examples, and the shape, number, assembly structure, etc. of the surface materials (plate materials) that form the surface of the top panel 2 are not limited.

[0055] [C-1-3] Horizontal reinforcement for top panel A plurality of horizontal reinforcement members extending across the entire width are provided inside the top panel 2. Note that a plurality of horizontal reinforcement members each shorter than the entire width of the top panel 2 may be connected in the opening width direction. As shown in Figs. 8 and 10, in this embodiment, the top panel 2 has three horizontal reinforcement members: an upper horizontal reinforcement member 25', a middle horizontal reinforcement member 25, and a lower horizontal reinforcement member 26.

[0056] The upper horizontal reinforcement 25' has a U-shape in cross section, which is made up of a horizontal surface 250', an outdoor side hanging piece 251', and an indoor side hanging piece 252'. The horizontal surface 250' has a projected dimension equivalent to the dimension between the inner surfaces of the first surface material forming the main surface 200 of the outdoor side facing surface 20 and the second surface material forming the indoor side facing surface 21, and the outdoor side hanging piece 251' and the indoor side hanging piece 252' are connected (welded) to the inner surfaces of the first surface material and the second surface material, respectively, in contact with each other. Both ends in the length direction of the upper horizontal reinforcement 25' are connected (welded) to the facing piece of the fifth surface material forming the side surface portion 24. A pressing plate forming the bottom 223 of the recess 221 is supported on the horizontal surface 250' of the upper horizontal reinforcement 25'.

[0057] In cross section, the intermediate horizontal reinforcement 25 has a U-shape formed by a horizontal surface 250, an outdoor side hanging piece 251, and an indoor side hanging piece 252. The U-shape may be formed by a rising piece instead of the outdoor side hanging piece 251 and the indoor side hanging piece 252. The horizontal surface 250 has a projected dimension equivalent to the dimension between the inner surface of the first surface material forming the main surface portion 200 of the outdoor side facing surface 20 and the second surface material forming the indoor side facing surface 21, and the outdoor side hanging piece 251 and the indoor side hanging piece 252 are connected (welded) to the inner surfaces of the first surface material and the second surface material, respectively, in contact with each other. Both ends in the length direction of the upper horizontal reinforcement 25 are connected (welded) to the facing piece of the fifth surface material forming the side surface portion 24. The horizontal surface 250 of the intermediate horizontal reinforcement 25 has a plurality of drainage holes (not shown) formed at intervals in the length direction (panel width direction).

[0058] The lower horizontal reinforcement 26 has a U-shape in cross section, which is made up of a horizontal surface 260, an outdoor rising piece 261, and an indoor rising piece 262. The U-shape may be formed from a hanging piece instead of the outdoor rising piece 261 and the indoor rising piece 262. The horizontal surface 260 has a projected dimension equivalent to the dimension between the inner surface of the first surface material forming the main surface portion 200 of the outdoor facing surface 20 and the inner surface of the second surface material forming the indoor facing surface 21, and the outdoor rising piece 261 and the indoor rising piece 262 are connected (welded) to the inner surfaces of the first surface material and the second surface material, respectively. The corner portion formed by the outdoor portion of the horizontal surface 260 and the outdoor rising piece 261 is connected to the inner surface of the corner portion at the lower end of the first surface material (see FIG. 10). Both ends of the lower horizontal reinforcement 26 in the length direction are connected (welded) to the facing piece of the fifth surface material forming the side surface portion 24. A horizontal surface 260 of the lower horizontal reinforcement member 26 is formed with a plurality of drain holes (not shown) spaced apart in the length direction (panel width direction).

[0059] [C-1-4] Vertical reinforcement for top panel In the internal space of the top panel 2, vertical reinforcements are provided in such a manner as to resist vertical forces acting on the top panel 2 and transmit the vertical forces downward. In this embodiment, a first vertical reinforcement 27 is provided between the upper horizontal reinforcement 25' and the intermediate horizontal reinforcement 25 of the top panel 2, located directly below the bottom surface 223 of the recess 221 in the upper surface portion 22 of the top panel 2, a second vertical reinforcement 28 is provided between the intermediate horizontal reinforcement 25 and the lower horizontal reinforcement 26, located directly below the first vertical reinforcement 27, and a third vertical reinforcement 29 is provided between the lower horizontal reinforcement 26 and the third and fourth surface materials forming the lower end portion, located directly below the second vertical reinforcement 28.

[0060] The first vertical reinforcement 27 is provided in such a manner as to transmit the vertical force downward against the vertical force acting on the top panel 2. The first vertical reinforcement 27 has a height dimension such that its upper end abuts against the horizontal surface 250' of the upper horizontal reinforcement 25' and its lower end abuts against the horizontal surface 250 of the middle horizontal reinforcement 25, and also has a projection dimension such that it abuts against the inner surfaces of the first surface material (main surface 200 of the outdoor facing surface 20) and the second surface material (indoor facing surface 21).

[0061] More specifically, as shown in Figure 9, the first vertical reinforcement member 27 of this embodiment has a hat-shaped cross-sectional shape consisting of an outdoor-side visible surface 270, a pair of visible surfaces 271 extending from both ends of the width direction (visible direction) of the outdoor-side visible surface 270 toward the indoor side, and a pair of indoor-side visible pieces 272 extending in the visible direction so as to be spaced apart from each other from the indoor-side tips of the pair of visible surfaces 271, and the outdoor-side visible surface 270, the pair of visible surfaces 271 and the pair of indoor-side visible pieces 272 extend vertically in the height direction of the top panel 2.

[0062] The projection surface 271 of the first vertical reinforcement 27 has a projection dimension equivalent to the dimension between the inner surface of the first surface material forming the main surface portion 200 of the outdoor facing surface 20 and the inner surface of the second surface material forming the indoor facing surface 21, and the outdoor facing surface 270 of the first vertical reinforcement 27 abuts the inner surface of the outdoor facing surface 20, and the indoor facing piece 272 abuts the inner surface of the indoor facing surface 21 and is connected (welded). The upper end edge of the first vertical reinforcement 27 (at least a pair of projection surfaces 271) is a horizontal edge and abuts the lower surface of the horizontal surface 250' of the upper horizontal reinforcement 25'. The lower end edge of the first vertical reinforcement 27 (at least a pair of projection surfaces 271) is a horizontal edge and abuts the upper surface of the horizontal surface 250 of the intermediate horizontal reinforcement 25. A hole 2710 is formed in the lower part of the projection surface 271.

[0063] The second vertical reinforcement 28 is provided in a manner that resists the vertical force acting on the top panel 2 and transmits the vertical force downward. The second vertical reinforcement 28 has a height dimension that allows its upper end to abut against the horizontal surface 250 of the middle horizontal reinforcement 25 and its lower end to abut against the horizontal surface 260 of the lower horizontal reinforcement 26, and also has a projection dimension that allows it to abut against the inner surfaces of the first surface material (main surface 200 of the outdoor facing surface 20) and the second surface material (indoor facing surface 21).

[0064] The second vertical reinforcement member 28, like the first vertical reinforcement member 27 (see Figure 9), has a hat-shaped cross-sectional shape consisting of an outdoor-side visible surface 280, a pair of visible surfaces 281 extending from both ends of the width direction (visible direction) of the outdoor-side visible surface toward the indoor side, and a pair of indoor-side visible pieces 282 extending in the visible direction so as to be spaced apart from each other from the indoor-side tips of the pair of visible surfaces 281, and the outdoor-side visible surface 280, the pair of visible surfaces 281 and the pair of indoor-side visible pieces 282 extend vertically in the height direction of the top panel 2.

[0065] The projection surface 281 of the second vertical reinforcement 28 has a projection dimension equivalent to the dimension between the inner surface of the first surface material forming the main surface portion 200 of the outdoor facing surface 20 and the second surface material forming the indoor facing surface 21, and the outdoor facing surface 280 of the second vertical reinforcement 28 abuts against the inner surface of the outdoor facing surface 20, and the indoor facing piece 282 abuts against the inner surface of the indoor facing surface 21 and is connected (welded). The upper end edge of the second vertical reinforcement 28 (at least a pair of projection surfaces 281) is a horizontal edge and abuts against the lower surface of the horizontal surface 250 of the middle horizontal reinforcement 25. The lower end edge of the second vertical reinforcement 28 (at least a pair of projection surfaces 281) is a horizontal edge and abuts against the upper surface of the horizontal surface 260 of the lower horizontal reinforcement 26. Two holes 2810 are formed in the projection surface 281 with a gap between them.

[0066] The third vertical reinforcement 29 is provided in a manner that resists the vertical force acting on the top panel 2 and transmits the vertical force downward. The third vertical reinforcement 29 has a height dimension such that its upper end abuts against the horizontal surface 260 of the lower horizontal reinforcement 26 and its lower end abuts against the portions (including at least the horizontal surfaces) of the third and fourth surface materials that form the lower end portion, and also has a projection dimension that abuts against the outdoor-side vertical portion of the third surface material (lower outdoor-side visible surface 202) and the second surface material (indoor-side visible surface 21).

[0067] The third vertical reinforcement 29, like the first vertical reinforcement 27 (see Figure 9) and the second vertical reinforcement 28, has a hat-shaped cross-sectional shape consisting of an outdoor-side visible surface 290, a pair of visible surfaces 291 extending from both ends of the width direction (visible direction) of the outdoor-side visible surface 290 toward the indoor side, and a pair of indoor-side visible pieces 292 extending in the visible direction so as to be spaced apart from each other from the indoor-side tips of the pair of visible surfaces 291, and the outdoor-side visible surface 290, the pair of visible surfaces 291 and the pair of indoor-side visible pieces 292 extend vertically in the height direction of the top panel 2.

[0068] The projected surface 291 of the third vertical reinforcement 29 has a projected dimension corresponding to the dimension between the part of the third surface material forming the lower outdoor facing surface 202 and the inner surface of the second surface material forming the indoor side facing surface 21, and the third vertical reinforcement 29 is connected (welded) such that the outdoor facing surface 290 abuts the inner surface of the third surface material forming the lower outdoor facing surface 202, and the indoor facing piece 292 abuts the inner surface of the second surface material forming the indoor side facing surface 21. The upper edge of the third vertical reinforcement 29 (at least a pair of projected surfaces 291) is a horizontal edge and abuts against the underside of the horizontal surface 260 of the lower horizontal reinforcement 26. The lower edge of the third vertical reinforcement member 29 (at least a pair of prospective faces 291) partially abuts against the fourth surface material which forms the central horizontal plane 232, the indoor side vertical face 234, and the indoor side lower face 235, and more specifically, it has a horizontal edge 293 abutting against the central horizontal plane 232, a vertical edge abutting against the lower end portion of the indoor side vertical face 234, and a horizontal edge 294 abutting against the indoor side lower face 235. An opening 2910 is formed below the horizontal edge 293 of the third vertical reinforcement member 29.

[0069] [C―2] Middle panel [C-2-1] Outline of the middle panel The configuration of panel 3 will be described with reference to Figures 11 to 15. Panel 3 is a roughly horizontally rectangular plate-like body with a predetermined width, height, and thickness (projected dimensions) extending in the opening width direction, and is made up of an outdoor facing surface 30, an indoor facing surface 31, an upper surface portion 32, a lower surface portion 33, and side surfaces 34 on both ends in the width direction.

[0070] The lower end portion of the outdoor sight surface 30 is formed as a step recessed towards the indoor sight surface 31. Specifically, the outdoor sight surface 30 is made up of a main surface portion 300 and a step formed below the main surface portion 300, and the step is formed from a lower edge portion 301 at the lower end of the main surface portion 300 and a lower outdoor sight surface (step sight surface) 302 that is displaced towards the indoor sight surface 31 side and hangs down relative to the vertically oriented main surface portion 300.

[0071] The upper surface portion 32 of the panel 3 is formed of a horizontal outdoor-side upper surface 320, an outdoor-side inclined surface 321 extending from the indoor side portion of the outdoor-side upper surface 320 toward the indoor side and upward, a central horizontal plane 322 extending horizontally from the indoor side portion of the outdoor-side inclined surface 321 toward the indoor side, an indoor side inclined surface 323 extending from the indoor side portion of the central horizontal plane 322 toward the indoor side and downward, an indoor side vertical surface 324 hanging down from the indoor side portion of the indoor side inclined surface 323, and an indoor side lower surface 325 extending horizontally toward the indoor side from the lower end of the indoor side vertical surface 324. The outdoor side inclined surface 321, the central horizontal plane 322, and the indoor side inclined surface 323 form a trapezoidal portion in a side view.

[0072] An outdoor-side rising piece 303 is provided on the outdoor-side portion of the upper surface portion 32, which rises vertically and is flush with the main surface portion 300 of the outdoor-side visible surface 30, and an indoor-side rising piece 310 is provided on the indoor-side portion of the upper surface portion 32, which rises vertically and is flush with the indoor-side visible surface 31. The upper end portion of the panel 3 consists of the upper surface portion 32, the outdoor-side rising piece 303, and the indoor-side rising piece 310. As shown in Figure 11, the width dimension of the outdoor-side rising piece 303 of the panel 3 is smaller than the width dimension of the intermediate panel 3, and a panel width direction edge 3030 of the outdoor-side rising piece 303 is located inward from the side surface portion 34 of the panel 3.

[0073] The lower surface portion 33 of the panel 3 is formed, in a side view, from an outdoor-side lower surface 330, an outdoor-side inclined surface 331 extending from an indoor-side portion of the outdoor-side lower surface 330 toward the indoor side and upward, a central horizontal plane 332 extending horizontally from an indoor-side portion of the outdoor-side inclined surface 331 toward the indoor side, an indoor-side inclined surface 333 extending from an indoor-side portion of the central horizontal plane 332 toward the indoor side and downward, an indoor-side vertical surface 334 hanging down from an indoor-side portion of the indoor-side inclined surface 333, and an indoor-side lower surface 335 extending horizontally toward the indoor side from a lower end of the indoor-side vertical surface 334. The outdoor-side inclined surface 331, the central horizontal plane 332, and the indoor-side inclined surface 333 form a trapezoidal portion in a side view.

[0074] The upper end portion of the panel 3 includes an upper surface portion 32, an outdoor side rising piece 303 that rises vertically and is flush with the main surface portion 300 of the outdoor side facing surface 30, and an indoor side rising piece 310 that rises vertically and is flush with the indoor side facing surface 31. A groove is formed in the indoor side portion of the upper end portion of the panel 3, extending in the panel width direction from the indoor side vertical surface 324, the indoor side lower surface 325, and the indoor side rising piece 310, and an elastic water-stopping member 16 is fitted in the groove. The configuration of the elastic water-stopping member 16 will be described in detail later. In this embodiment, the elastic water-stopping member 16 is provided in the upper end portion of the panel 3, but the elastic water-stopping member may be provided in the lower end portion of the panel 3 or in both the upper end portion and the lower end portion, so that the elastic water-stopping member is sandwiched between the lower end portion of the upper panel 3 and the upper end portion of the lower panel 3 when the opening is in a fully closed position.

[0075] The lower end portion of the panel 3 is composed of the lower end portion of the outdoor facing surface 30 (a step portion composed of a lower edge portion 301 and a lower outdoor facing surface 302) and a lower surface portion 33. As shown in FIG. 14, a buffer / airtight member 15 extending in the opening width direction is provided on a central horizontal surface 332 of the lower surface portion 33. The buffer / airtight member 15 has a dimension shorter than the overall width of the panel, and the lengthwise end edge of the buffer / airtight member 15 approximately coincides with the panel widthwise end edge 3030 of the outdoor rising piece 303. The buffer / airtight member 15 according to this embodiment is formed of a first layer 150 made of flame-retardant rubber with high hardness (made of chloroprene rubber or the like, and mainly functions as a buffer material) and a second layer 151 made of flame-retardant foam with low hardness (made of EPDM foam or the like, and mainly functions as an airtight material), but the material is not limited. In this embodiment, the shock-absorbing and airtight member 15 has a two-layer structure, but the present invention is not limited to this, and the shock-absorbing and airtight member 15 having a one-layer structure may be formed from a single member. In this embodiment, the shock-absorbing and airtight member 15 is provided at the lower end portion of the panel 3, but the shock-absorbing and airtight member may be provided at the upper end portion or at both the upper end portion and the lower end portion of the panel 3, so that the shock-absorbing and airtight member is sandwiched between the lower end portion of the upper panel 3 and the upper end portion of the lower panel 3 when the opening is in a fully closed position.

[0076] As shown in Figures 14 and 15, the end room outside airtight member 17 is provided at both ends of the lower outdoor facing surface 302 of the panel 3 in the panel width direction. The end room outside airtight member 17 is a member having a rectangular shape when viewed from the front, and has a height dimension equivalent to the total height of the lower outdoor facing surface 302 of the panel 3 (in the illustrated embodiment, it is slightly larger than the total height of the lower outdoor facing surface 302), and a visible dimension approximately equivalent to the distance between the side portion 34 of the panel 3 and the panel width direction edge 3030 of the outdoor side rising piece 303. The thickness of the end room outside airtight member 17 is larger than the visible dimension of the lower end edge portion 301 of the lower end of the main surface portion 300 of the outdoor facing surface 30, and when attached to both ends of the lower outdoor facing surface 302 in the panel width direction, the outer surface of the end room outside airtight member 17 is located slightly outdoors than the main surface portion 300. The end room outer airtight member 17 according to this embodiment is made of a flame-retardant rubber sponge (chloroprene rubber, etc.), but the material is not limited. In this embodiment, the end room outer airtight member 17 is provided at both ends in the panel width direction near the lower end of the panel 3, but depending on the shape of the outdoor facing surface 30 of the panel 3, the end room outer airtight member may be provided at the upper end.

[0077] As shown in Figs. 14 and 15, the end lower airtight member 18 is provided so as to connect between the end room outer airtight member 17 and the buffer / airtight member 15. The end lower airtight member 18 extends along the outdoor lower surface 330, the outdoor inclined surface 331, and the central horizontal surface 332 at both widthwise ends of the lower end of the panel 3. The lower end of the end room outer airtight member 17 extends downward beyond the outdoor lower surface 330, and a part of the outdoor side part of the end lower airtight member 18 is in close contact with the inner surface of the lower end of the end room outer airtight member 17. The end lower airtight member 18 according to this embodiment is formed of a first layer 180 made of a flame-retardant rubber sponge (such as chloroprene rubber) having a high hardness and a second layer 181 made of a flame-retardant foam (such as EPDM foam, which mainly functions as an airtight material) having a low hardness, but the material is not limited. In this embodiment, the lower end airtight member 18 has a two-layer structure, but the present invention is not limited to this, and the lower end airtight member 18 may be formed of a single layer structure from a single member. As shown in FIG. 14, an airtight member is provided over the entire width of the panel, including the buffer / airtight member 15, the left and right lower end airtight members 18 in close contact with both ends of the buffer / airtight member 15 in the length direction, and the left and right end room outside airtight members 17 in close contact with the outdoor side portions of the left and right lower end airtight members 18. The description of the configuration of the lower end portion of the panel 3 can be applied to the configuration of the lower end portion of the top panel 2 (FIG. 10A). In this embodiment, the lower end airtight member 18 is provided at the lower end portion of the panel 3, but the lower end airtight member may be provided at the upper end portion or at both the upper end portion and the lower end portion of the panel 3, and the lower end airtight member may be sandwiched between the lower end portion of the upper panel 3 and the upper end portion of the lower panel 3 in the fully closed position of the opening.

[0078] [C-2-2] Surface material of middle panel The panel 3 is assembled from a number of steel plates formed into a prescribed shape. In this embodiment, the main surface 300 of the outdoor facing surface 30 of the panel 3 is formed from a first surface material, and a folded piece is integrally formed at each of the upper and lower ends of the first surface material, with the folded piece at the upper end forming the outdoor facing horizontal surface 320 of the upper surface portion 32 and the folded piece at the lower end forming the lower edge portion 301. The indoor facing surface 31 of the panel 3 is formed from a second surface material, and the upper end portion of the second surface material forms an indoor side rising piece 310 and a folded piece is integrally formed at the lower end, with the folded piece at the lower end forming the indoor side lower surface 335 of the lower surface portion 33.

[0079] The outdoor side portion of upper surface portion 32 is made of a third surface material bent into a predetermined shape, and the indoor side portion of upper surface portion 32 is made of a fourth surface material bent into a predetermined shape, the third surface material and the fourth surface material overlapping to form central horizontal plane 322. Outdoor side rising piece 303 is made of a plate material that is L-shaped in side view.

[0080] The lower outdoor facing surface 301 of the outdoor facing surface 30 and the outdoor side portion of the underside portion 33 are made of a fifth surface material folded into a predetermined shape, and the indoor side portion of the underside portion 33 is made of a sixth surface material folded into a predetermined shape, with parts of the fifth surface material and the sixth surface material overlapping to form a central horizontal plane 332, and parts of the sixth surface material overlapping with the folded piece at the lower end of the second surface material to form an indoor side underside surface 335. The sixth surface material forming the indoor side vertical surface 334 of the underside portion 33 has a plurality of drainage holes (not shown) formed at intervals in the width direction of the panel, located at the lower end of the indoor side vertical surface 334. The drainage holes may be formed partially across the indoor side underside surface 335.

[0081] The side surface portion 34 is formed from a surface portion having a shape that follows the cross-sectional shape of the panel 3 and a seventh surface material consisting of a pair of facing pieces, and the pair of facing pieces are abutted and connected (welded) to the inner surfaces of the outdoor facing surface 30 and the indoor facing surface 31. The upper end of the seventh surface material that forms the side surface portion 34 at least partially abuts against the inner surfaces of the third and fourth surface materials that form the upper surface portion 32, and the lower end at least partially abuts against the fifth and sixth surface materials that form the lower surface portion 33. The side surface portion 34 is formed with a hole portion 340 (see FIG. 15) so as to straddle the horizontal surface 350 of the intermediate horizontal reinforcement member 35. Furthermore, a gap 341 and an opening 342 are formed in the lower portion of the side surface portion 34 as water drainage openings.

[0082] Although the first to seventh surface materials formed into predetermined shapes have been described above, these are merely examples, and the shape, number, assembly structure, etc. of the surface materials (plate materials) that form the surface of panel 3 are not limited.

[0083] [C-2-3] Horizontal reinforcement for intermediate panel A plurality of horizontal reinforcement members extending across the entire width are provided inside the panel 3. Note that a plurality of horizontal reinforcement members each shorter than the entire width of the panel 3 may be connected in the opening width direction. As shown in Figs. 11 and 13, in this embodiment, the panel 3 includes two horizontal reinforcement members, a middle horizontal reinforcement member 35 and a lower horizontal reinforcement member 36.

[0084] In cross section, the intermediate horizontal reinforcement 35 has a U-shape formed by a horizontal surface 350, an outdoor side hanging piece 351, and an indoor side hanging piece 352. The U-shape may be formed from a rising piece and a hanging piece instead of the outdoor side hanging piece 351 and the indoor side hanging piece 352. The horizontal surface 350 has a projected dimension equivalent to the dimension between the inner surface of the first surface material forming the main surface portion 300 of the outdoor side facing surface 30 and the inner surface of the second surface material forming the indoor side facing surface 31, and the outdoor side hanging piece 351 and the indoor side hanging piece 352 are connected (welded) to the inner surfaces of the first surface material and the second surface material, respectively, in contact with each other. Both ends in the length direction of the intermediate horizontal reinforcement 35 are connected (welded) to the facing piece of the seventh surface material forming the side surface portion 34. The horizontal surface 350 of the intermediate horizontal reinforcement 35 has a plurality of drainage holes (not shown) formed at intervals in the length direction (panel width direction).

[0085] The lower horizontal reinforcement 36 has a U-shape in cross section, which is made up of a horizontal surface 360, an outdoor rising piece 361, and an indoor rising piece 362. The U-shape may be formed from a hanging piece instead of the outdoor rising piece 361 and the indoor rising piece 362. The horizontal surface 360 ​​has a projected dimension equivalent to the dimension between the inner surface of the first surface material forming the main surface portion 300 of the outdoor facing surface 30 and the inner surface of the second surface material forming the indoor facing surface 31, and the outdoor rising piece 361 and the indoor rising piece 362 are connected (welded) to the inner surfaces of the first surface material and the second surface material, respectively. The corner portion formed by the outdoor portion of the horizontal surface 360 ​​and the outdoor rising piece 361 is connected to the inner surface of the corner portion at the lower end of the first surface material (see FIG. 13). Both ends of the lower horizontal reinforcement in the length direction are connected (welded) to the facing piece of the seventh surface material forming the side surface portion 34. A horizontal surface 360 ​​of the lower horizontal reinforcement member 36 is formed with a plurality of drain holes (not shown) spaced apart in the length direction (panel width direction).

[0086] [C-2-4] Vertical reinforcement for intermediate panel In the internal space of the panel 3, vertical reinforcements are provided in such a manner as to resist vertical forces acting on the panel 3 and transmit the vertical forces downward. In this embodiment, a first vertical reinforcement 37 is provided between the third and fourth surface materials forming the upper surface portion 32 of the panel 3 and the intermediate horizontal reinforcement 35, positioned immediately below the vertical reinforcement of the panel directly above (the third vertical reinforcements 29 to 39 of the top panel 2 to panel 3) when the shutter curtain 1 is in the fully closed position, a second vertical reinforcement 38 is provided between the intermediate horizontal reinforcement 35 and the lower horizontal reinforcement 36, positioned immediately below the first vertical reinforcement 37, and a third vertical reinforcement 39 is provided between the lower horizontal reinforcement 36 and the fifth and sixth surface materials forming the lower surface portion 33, positioned immediately below the second vertical reinforcement 38.

[0087] The first vertical reinforcement 37 is provided in such a manner as to resist a vertical force acting on the panel 3 and transmit the vertical force downward. The first vertical reinforcement 37 has a height dimension such that its upper end partially abuts against the third and fourth surface materials forming the top surface 32 and its lower end abuts against the horizontal surface 350 of the intermediate horizontal reinforcement 35, and also has a projection dimension such that it abuts against the inner surfaces of the first surface material (main surface 300 of the outdoor facing surface 30) and the second surface material (indoor facing surface 31).

[0088] More specifically, as shown in Figure 12, the first vertical reinforcement member 37 of this embodiment has a hat-shaped cross-sectional shape consisting of an outdoor-side visible surface 370, a pair of visible surfaces 371 extending from both ends of the width direction (visible direction) of the outdoor-side visible surface 370 toward the indoor side, and a pair of indoor-side visible pieces 372 extending in the visible direction so as to be spaced apart from each other from the indoor-side tips of the pair of visible surfaces 371, and the outdoor-side visible surface 370, the pair of visible surfaces 371 and the pair of indoor-side visible pieces 372 extend vertically in the height direction of the panel 3.

[0089] The projected surface 371 of the first vertical reinforcement member 37 has a projected dimension corresponding to the dimension between the inner surface of the first surface material forming the main surface 300 of the outdoor facing surface 30 and the inner surface of the second surface material forming the indoor facing surface 31, and the first vertical reinforcement member 37 is connected (welded) such that the outdoor facing surface 370 abuts the inner surface of the outdoor facing surface 30 and the indoor facing piece 372 abuts the inner surface of the indoor facing surface 31.

[0090] The upper edge of the first vertical reinforcement 37 (at least a pair of projected surfaces 371) is shaped to conform to the third and fourth surface materials that form the upper surface portion 32, and is in partial contact (at least the horizontal portion) with the lower surfaces of the third and fourth surface materials that form the upper surface portion 32. The lower edge of the first vertical reinforcement 37 (at least a pair of projected surfaces 371) is a horizontal edge and is in contact with the upper surface of the horizontal surface 350 of the intermediate horizontal reinforcement 35. A hole 3710 is formed in the lower portion of the projected surface 371.

[0091] The second vertical reinforcement 38 is provided in such a manner as to resist the vertical force acting on the panel 3 and transmit the vertical force downward. The second vertical reinforcement 38 has a height dimension such that its upper end abuts against the horizontal surface 350 of the middle horizontal reinforcement 35 and its lower end abuts against the horizontal surface 360 ​​of the lower horizontal reinforcement 36, and also has a projection dimension such that it abuts against the first surface material (main surface 300 of the outdoor facing surface 30) and the second surface material (indoor facing surface 31).

[0092] The second vertical reinforcement member 38, like the first vertical reinforcement member 37 (see Figure 12), has a hat-shaped cross-sectional shape consisting of an outdoor-side visible surface 380, a pair of visible surfaces 381 extending from both ends of the width direction (visible direction) of the outdoor-side visible surface toward the indoor side, and a pair of indoor-side visible pieces 382 extending in the visible direction so as to be spaced apart from each other from the indoor-side tips of the pair of visible surfaces 381, and the outdoor-side visible surface 380, the pair of visible surfaces 381 and the pair of indoor-side visible pieces 382 extend vertically in the height direction of the panel 3.

[0093] The projected surface 381 of the second vertical reinforcement member 38 has a projected dimension corresponding to the dimension between the inner surface of the first surface material forming the main surface 300 of the outdoor facing surface 30 and the second surface material forming the indoor facing surface 31, and the second vertical reinforcement member 38 is connected (welded) such that the outdoor facing surface 380 abuts the inner surface of the outdoor facing surface 30 and the indoor facing piece 382 abuts the inner surface of the indoor facing surface 31.

[0094] The upper edge of the second vertical reinforcement 38 (at least a pair of projected surfaces 381) is a horizontal edge and abuts against the underside of the face portion 350 of the middle horizontal reinforcement 35. The lower edge of the second vertical reinforcement 38 (at least a pair of projected surfaces 381) is a horizontal edge and abuts against the upper surface of the horizontal surface 360 ​​of the lower horizontal reinforcement 36. Two holes 3810 are formed in the projected surfaces 381 at an interval above and below.

[0095] The third vertical reinforcement 39 is provided in such a manner as to resist a vertical force acting on the panel 3 and transmit the vertical force downward. The third vertical reinforcement 39 has a height dimension such that its upper end abuts against the horizontal surface 360 ​​of the lower horizontal reinforcement 36 and its lower end abuts against the portions (including at least the horizontal surfaces) of the fifth and sixth surface materials which form the lower end portion, and also has a projection dimension such that it abuts against the outdoor-side vertical portion of the fifth surface material (lower outdoor-side visible surface 302) and the second surface material (indoor-side visible surface 31).

[0096] The third vertical reinforcement 39, like the first vertical reinforcement 37 (see Figure 12) and the second vertical reinforcement 38, has a hat-shaped cross-sectional shape consisting of an outdoor-side visible surface 390, a pair of visible surfaces 391 extending from both ends of the width direction (visible direction) of the outdoor-side visible surface 390 toward the indoor side, and a pair of indoor-side visible pieces 392 extending in the visible direction so as to be spaced apart from each other from the indoor-side tips of the pair of visible surfaces 391, and the outdoor-side visible surface 390, the pair of visible surfaces 391 and the pair of indoor-side visible pieces 392 extend vertically along the height direction of the panel 3.

[0097] The projected surface 391 of the third vertical reinforcement member 39 has a projected dimension corresponding to the dimension between the part of the fifth surface material forming the lower outdoor facing surface 302 and the inner surface of the second surface material forming the indoor facing surface 31, and the third vertical reinforcement member 39 is connected (welded) such that the outdoor facing surface 390 abuts the inner surface of the fifth surface material forming the lower outdoor facing surface 302, and the indoor facing piece 392 abuts the inner surface of the second surface material forming the indoor facing surface 31.

[0098] The upper edge of the third vertical reinforcement 39 (at least a pair of prospective surfaces 391) is a horizontal edge and abuts against the lower surface of the horizontal surface 350 of the intermediate horizontal reinforcement 35. The lower edge of the third vertical reinforcement 39 (at least a pair of prospective surfaces 391) partially abuts against the sixth surface material forming the central horizontal surface 332, the indoor side vertical surface 334, and the indoor side lower surface 335, and more specifically, includes a horizontal edge 393 abutting against the central horizontal surface 332, a vertical edge abutting against the lower end portion of the indoor side vertical surface 334, and a horizontal edge 394 abutting against the indoor side lower surface 335. An opening 3910 is formed below the horizontal edge 393 of the third vertical reinforcement 39.

[0099] [C―3] Bottom panel [C-3-1] Outline of bottom panel (panel body) The configuration of the bottom panel 4 according to this embodiment will be described with reference to Figs. 16 to 18. The bottom panel 4 is composed of a bottom panel main body 4' and a movable seat plate 6 provided at the lower end of the bottom panel main body 4'. The bottom panel main body 4' is a plate-like body in a generally horizontally rectangular shape with a predetermined width, height, and thickness (projected dimensions) extending in the opening width direction, and is composed of an outdoor facing surface 40, an indoor facing surface 41, an upper surface portion 42, a lower surface portion 43 (outdoor lower surface 430, indoor lower surface 31), and side surfaces 44 at both ends in the width direction. As shown in Fig. 16, the width dimension (projected dimension) of the movable seat plate 6 is the same as the width dimension (projected dimension) of the bottom panel main body 4', and the projected dimension of the movable seat plate 6 is the same as the projected dimension of the bottom panel main body 4'.

[0100] The upper surface 42 of the panel body 4' of the bottom panel 4 is formed from a horizontal outdoor-side upper surface 420, an outdoor-side inclined surface 421 extending from the indoor-side portion of the outdoor-side upper surface 420 toward the indoor side and upward, a central horizontal plane 422 extending horizontally from the indoor-side portion of the outdoor-side inclined surface 421 toward the indoor side, an indoor-side inclined surface 423 extending from the indoor-side portion of the central horizontal plane 422 toward the indoor side and downward, an indoor-side vertical surface 424 hanging down from the indoor-side portion of the indoor-side inclined surface 423, and an indoor-side lower surface 425 extending horizontally toward the indoor side from the lower end of the indoor-side vertical surface 424.

[0101] An outdoor side rising piece 400 is provided at the outdoor side portion of the upper surface portion 42, which rises vertically and is flush with the outdoor side facing surface 40, and an indoor side rising piece 410 is provided at the indoor side portion of the upper surface portion 42, which rises vertically and is flush with the indoor side facing surface 41. The upper end portion of the panel main body 4' is composed of the upper surface portion 42, the outdoor side rising piece 400, and the indoor side rising piece 410. As shown in FIG. 16, the width dimension of the outdoor side rising piece 400 of the panel main body 4' is smaller than the width dimension of the panel main body 4', and the panel width direction edge 4000 of the outdoor side rising piece 400 is located inside the side surface portion 44 of the panel main body 4'. The configuration of the upper end portion of the panel main body 4' is substantially the same as the configuration of the upper end portion of the panel 3, and the top view of the bottom panel main body 4' can be referred to the top view of the panel 3 shown in FIG. 11.

[0102] The lower end portion of the panel body 4' consists of an outdoor side lower surface 430, an indoor side lower surface 431, and an opening formed between the indoor side end of the outdoor side horizontal lower surface 430 and the outdoor side end of the indoor side lower surface 431, and a movable seat plate 6 is provided at the lower end portion of the panel body 4' so as to be able to move up and down.

[0103] [C-3-2] Surface material of bottom panel (panel body) The main body 4' of the bottom panel 4 is assembled from a number of steel plates formed into a prescribed shape. In this embodiment, the outdoor facing surface 40 of the main body 4' is formed from a first surface material, and a folded piece is integrally formed at each of the upper and lower ends of the first surface material, with the folded piece at the upper end forming the outdoor facing upper surface 420 of the upper surface portion 42 and the folded piece at the lower end forming the outdoor facing lower surface 430 as an outdoor facing horizontal piece. The indoor facing surface 41 of the panel main body 4' is formed from a second surface material, and the upper end portion of the second surface material forms the indoor facing rising piece 410 and the folded piece at the lower end forming the indoor facing lower surface 431 as an indoor facing horizontal piece.

[0104] The outdoor side portion of upper surface portion 42 is made of a third surface material bent into a predetermined shape, and the indoor side portion of upper surface portion 42 is made of a fourth surface material bent into a predetermined shape, the third surface material and the fourth surface material overlapping to form central horizontal plane 422. Outdoor side rising piece 400 is made of a plate material that is L-shaped in side view.

[0105] The side surface portion 44 is formed from a surface portion having a shape that follows the cross-sectional shape of the panel main body 4' and a fifth surface material consisting of a pair of facing pieces, and the pair of facing pieces are connected (welded) to the inner surfaces of the outdoor facing surface 40 and the indoor facing surface 41, respectively. As shown in FIG. 17A, a hole 440 is formed in the side surface portion 44 so as to straddle a horizontal surface 450 of the middle horizontal reinforcement member 45. A gap 441, a hole 442, and a hole 443 formed so as to straddle a horizontal surface 460 of the lower horizontal reinforcement member 46 are provided in the lower part of the side surface portion 44. Although the first surface material to the fifth surface material formed into a predetermined shape have been described, these are merely examples, and the shape, number, assembly structure, etc. of the surface material (plate material) that forms the surface of the bottom panel main body 4' are not limited.

[0106] [C-3-3] Horizontal reinforcement for bottom panel (panel body) A plurality of horizontal reinforcements extending across the entire width are provided inside the panel body 4'. Note that a plurality of horizontal reinforcements shorter than the entire width of the panel body 4' may be connected in the opening width direction. In this embodiment, the panel body 4' includes two horizontal reinforcements, a middle horizontal reinforcement 45 and a lower horizontal reinforcement 46.

[0107] In cross section, the intermediate horizontal reinforcement 45 has a U-shape formed by a horizontal surface 450, an outdoor side hanging piece 451, and an indoor side hanging piece 452. The U-shape may be formed by a rising piece instead of the outdoor side hanging piece 451 and the indoor side hanging piece 452. The horizontal surface 450 has a projected dimension equivalent to the dimension between the inner surfaces of the first surface material forming the outdoor side facing surface 40 and the second surface material forming the indoor side facing surface 41, and the outdoor side hanging piece 451 and the indoor side hanging piece 452 are connected (welded) to the inner surfaces of the first surface material and the second surface material, respectively, in contact with each other. Both ends in the length direction of the intermediate horizontal reinforcement 45 are connected (welded) to the facing piece of the fifth surface material forming the side surface portion 44. A plurality of drainage holes (not shown) are formed in the horizontal surface 450 of the intermediate horizontal reinforcement 45 at intervals in the length direction (panel width direction).

[0108] The lower horizontal reinforcement member 46 has a U-shape in cross section, which is made up of a horizontal surface 460, an outdoor vertical surface 461 that hangs down from the outdoor end of the horizontal surface 460, and an indoor vertical surface 462 that hangs down from the indoor end of the horizontal surface 460. The horizontal surface 460 has a projected dimension equivalent to the dimension between the inner surfaces of the first surface material that forms the outdoor facing surface 40 and the second surface material that forms the indoor facing surface 41, and the outdoor vertical surface 461 and the indoor vertical surface 462 are connected (welded) to the inner surfaces of the outdoor facing surface 40 and the indoor facing surface 41 by abutting them. The lower end of the outdoor vertical surface 461 abuts against the base end side of the outdoor lower surface 430, which is the outdoor horizontal piece, and the lower end of the indoor vertical surface 462 abuts against the base end side of the indoor lower surface 431, which is the indoor horizontal piece. The height dimension of the lower horizontal reinforcement member 46 is greater than the height dimension of the intermediate horizontal reinforcement member 45, and a plurality of detection switches SW are provided across the width in the space surrounded by the lower horizontal reinforcement member 46, the outdoor-side lower surface 430, and the indoor-side lower surface 431. A horizontal surface 460 of the lower horizontal reinforcement member 46 serves as the mounting surface for the detection switches SW. A plurality of drainage holes (not shown) are formed in the horizontal surface 460 of the lower horizontal reinforcement member 46 at intervals in the length direction (panel width direction).

[0109] [C-3-4] Vertical reinforcement for bottom panel (panel body) In the internal space of the main body 4', vertical reinforcements are provided in such a manner as to resist the vertical force acting on the panel main body 4' and transmit the vertical force downward. In this embodiment, a first vertical reinforcement 47 is provided between the third and fourth surface materials forming the upper surface portion 42 of the panel main body 4' and the intermediate horizontal reinforcement 45, positioned immediately below the vertical reinforcement (third vertical reinforcement 39) of the panel 3 directly above when the shutter curtain 1 is in the fully closed position, and a second vertical reinforcement 48 is provided between the intermediate horizontal reinforcement 45 and the lower horizontal reinforcement 46, positioned immediately below the first vertical reinforcement 47.

[0110] The first vertical reinforcement member 47 is provided in such a manner that it resists the vertical force acting on the panel body 4' and transmits the vertical force downward. The first vertical reinforcement member 47 has a height dimension such that its upper end partially abuts against the third and fourth surface materials forming the top surface portion 42 and its lower end abuts against the horizontal surface 450 of the intermediate horizontal reinforcement member 45, and also has a projection dimension such that it abuts against the inner surfaces of the first surface material (outdoor facing surface 40) and the second surface material (indoor facing surface 41).

[0111] More specifically, the first vertical reinforcement member 47 in this embodiment has a hat-shaped cross-sectional shape consisting of an outdoor-side visible surface 470, a pair of visible surfaces 471 extending from both ends of the width direction (visible direction) of the outdoor-side visible surface 470 toward the indoor side, and a pair of indoor-side visible pieces 472 extending in the visible direction so as to be spaced apart from each other from the indoor-side tips of the pair of visible surfaces 471, and the outdoor-side visible surface 470, the pair of visible surfaces 471 and the pair of indoor-side visible pieces 472 extend vertically in the height direction of the panel body 4'.

[0112] The projected surface 471 of the first vertical reinforcement member 47 has a projected dimension corresponding to the dimension between the inner surfaces of the first surface material forming the outdoor facing surface 40 and the second surface material forming the indoor facing surface 41, and the first vertical reinforcement member 47 is connected (welded) such that the outdoor facing surface 470 abuts the inner surface of the outdoor facing surface 40 and the indoor facing piece 472 abuts the inner surface of the indoor facing surface 41.

[0113] The upper edge of the first vertical reinforcement 47 (at least a pair of projected surfaces 471) is shaped to conform to the third and fourth surface materials that form the upper surface portion 42, and is in partial contact (at least the horizontal portion) with the lower surfaces of the third and fourth surface materials that form the upper surface portion 42. The lower edge of the first vertical reinforcement 47 (at least a pair of projected surfaces 471) is a horizontal edge and is in contact with the upper surface of the horizontal surface 450 of the intermediate horizontal reinforcement 45. A hole 4710 is formed in the lower portion of the projected surface 471.

[0114] The second vertical reinforcement 48 is provided in such a manner that it resists the vertical force acting on the panel body 4' and transmits the vertical force downward. The second vertical reinforcement 48 has a height dimension such that its upper end abuts against the horizontal surface 450 of the middle horizontal reinforcement 45 and its lower end abuts against the horizontal surface 460 of the lower horizontal reinforcement 46, and also has a projection dimension such that it abuts against the first surface material (outdoor facing surface 40) and the second surface material (indoor facing surface 41).

[0115] The second vertical reinforcement member 48, like the first vertical reinforcement member 47, has a hat-shaped cross-sectional shape consisting of an outdoor-side visible surface 480, a pair of visible surfaces 481 extending from both ends of the width direction (visible direction) of the outdoor-side visible surface toward the indoor side, and a pair of indoor-side visible pieces 482 extending in the visible direction so as to be spaced apart from each other from the indoor-side tips of the pair of visible surfaces 481, and the outdoor-side visible surface 480, the pair of visible surfaces 481 and the pair of indoor-side visible pieces 482 extend vertically in the height direction of the panel body 4'.

[0116] The projected surface 481 of the second vertical reinforcement member 48 has a projected dimension corresponding to the dimension between the inner surfaces of the first surface material forming the outdoor facing surface 40 and the second surface material forming the indoor facing surface 41, and the second vertical reinforcement member 48 is connected (welded) such that the outdoor facing surface 480 abuts the inner surface of the outdoor facing surface 40 and the indoor facing piece 482 abuts the inner surface of the indoor facing surface 41.

[0117] The upper edge of the second vertical reinforcement 48 (at least a pair of projected surfaces 481) is a horizontal edge and abuts against the lower surface of the horizontal surface 450 of the middle horizontal reinforcement 45. The lower edge of the second vertical reinforcement 48 (at least a pair of projected surfaces 481) is a horizontal edge and abuts against the upper surface of the horizontal surface 460 of the lower horizontal reinforcement 46. In this embodiment, the entire lower edge of the second vertical reinforcement 48 is a horizontal edge and abuts against the upper surface of the horizontal surface 460 of the lower horizontal reinforcement 46. Two holes 4810 are formed in the projected surface 481 with a gap between them.

[0118] [C-3-5] Bottom panel seat As shown in Fig. 16, the movable seat plate 6 according to this embodiment is a long member extending over the entire width of the panel body 4' of the bottom panel 4. As shown in Fig. 22, the movable seat plate 6 is composed of a bottom surface 60 extending in the opening width direction, an outdoor side rising piece (outdoor side facing piece) 61 rising from the outdoor side end of the bottom surface 60, an indoor side rising piece (indoor side facing piece) 62 rising from the indoor side end of the bottom surface 60, an outdoor side facing surface 63 located on the indoor side of the outdoor side rising piece 61 and rising from the bottom surface 60, an indoor side facing surface 64 located on the outdoor side of the indoor side rising piece 62 and rising from the bottom surface 60, an outdoor side locking piece 65 extending horizontally from the upper end of the outdoor side facing surface 63 to the outdoor side, and an indoor side locking piece 66 extending horizontally from the upper end of the indoor side facing surface 64 to the indoor side.

[0119] The dimension between the outdoor facing surface 63 and the indoor facing surface 64 of the movable seat plate 6 is slightly smaller than the width of the opening on the underside of the panel main body 4', and the movable seat plate 6 is suspended from the lower end of the panel main body 4' so as to be able to move upwards, with the outdoor side engaging piece 65 engaging with the outdoor side underside 430, which is the outdoor side horizontal piece of the panel main body 4', and the indoor side engaging piece 66 engaging with the indoor side underside 431, which is the indoor side horizontal piece of the panel main body 4'.

[0120] Located inside the lower end of the panel main body 4' (the space surrounded by the lower horizontal reinforcement 46), multiple detection switches SW are attached to the horizontal surface 460 of the lower horizontal reinforcement 46 at intervals in the width direction of the panel.When the shutter curtain 1 descends, the bottom surface of the movable seat plate 6 abuts against an obstacle or the floor surface, causing the movable seat plate 6 to move upward relative to the panel main body 4' and any of the detection switches SW turns ON, an obstacle detection signal is sent to the control unit via the cord reel CR.

[0121] The projected dimensions of the movable seat board 6 are the same as the projected dimensions of the panel main body 4', the outdoor facing surface 40 of the panel main body 4' and the outdoor facing raised piece 61 of the movable seat board 6 are flush with each other, and the indoor facing surface 41 of the panel main body 4' and the indoor facing raised piece 62 of the movable seat board 6 are flush with each other.

[0122] A groove is formed in the outdoor portion of the movable seat plate 6, extending in the length direction of the movable seat plate 6 (width direction of the bottom panel 4) from the outdoor portion of the bottom surface 60, the outdoor rising piece 61, and the outdoor facing surface 63, and an outdoor elastic water-stopping member 16α is fitted into the groove. As will be described later, the outdoor elastic water-stopping member 16α also functions as an airtight member.

[0123] A groove is formed in the indoor side part of the movable seat panel 6, extending in the length direction of the movable seat panel 6 (width direction of the bottom panel 4) from the indoor side part of the bottom surface 60, the indoor side rising piece 62, and the indoor side visible surface 64, and an indoor side elastic water-stopping member 16β is fitted into the groove. The configuration of the indoor side elastic water-stopping member 16β provided on the movable seat panel 6 is the same as that of the elastic water-stopping member 16 provided on the panel 3, except for slight differences in size and shape, and common reference numbers are used for each part (Figs. 26 and 27), and the explanation of the elastic water-stopping member 16 can be used. The configurations of the indoor side elastic water-stopping member 16β and the outdoor side elastic water-stopping member 16α are substantially the same. In this embodiment, an outdoor-side elastic water-stopping member 16α and an indoor-side elastic water-stopping member 16β are provided on the movable seat plate 6, but the outdoor-side elastic water-stopping member and the indoor-side elastic water-stopping member may be provided on the underside 43 (outdoor-side underside 430, indoor-side underside 31) of the bottom panel main body 4', or on both the movable seat plate 6 and the underside 43, so that when the opening is in a fully closed position, the outdoor-side elastic water-stopping member and the indoor-side elastic water-stopping member are sandwiched between the movable seat plate 6 and the underside 43 of the bottom panel main body 4'.

[0124] An elastic water-stopping member 19 is provided on the underside of the bottom surface 60 of the movable seat plate 6 over the entire width thereof, which is in contact with the floor surface FL when the seat plate 6 lands on the floor and is pressed against the floor surface FL when the seat plate 6 is pressed vertically.

[0125] [C-4] Configuration of the fitting of adjacent panels above and below in a shutter curtain In the shutter curtain 1 in the fully closed position, the lower end portion of the top panel 2 and the upper end portion of the panel 3, the lower end portion of the panel 3 and the upper end portion of the panel 3, and the lower end portion of the panel 3 and the upper end portion of the bottom panel 4 are fitted together. In this embodiment, in the vertically adjacent panels, the lower end portion or lower portion of the upper panel is generally concave, and the upper end portion or upper portion of the lower panel is generally convex, so that they fit together with each other by concave and convex when the opening is fully closed. Since the configuration of the lower end portion of the top panel 2 is the same as the configuration of the lower end portion of the panel 3, and the configuration of the upper end portion of the bottom panel 4 is the same as the configuration of the upper end portion of the panel 3, the fitting between the vertically adjacent panels of the shutter curtain 1 according to this embodiment will be described based on the fitting between the vertically adjacent panels 3 in the shutter curtain 1 in the fully closed position.

[0126] First, the position of the lower end portion of the upper panel 3 and the upper end portion of the lower panel 3 before they fit together will be described. When the shutter curtain 1 is lowered, each panel 3 is in a vertical position, and the lower end portion of the upper panel 3 is separated from the upper end portion of the lower panel 3 (see the left diagram of Fig. 4 and Fig. 21). Fig. 21 shows the positional relationship between the lower end portion of the upper panel 3 and the upper end portion of the lower panel 3 when the panel 3 is lowered. The left diagram of Fig. 21 shows the positional relationship between the lower end portion of the upper panel 3 and the upper end portion of the lower panel 3 when the outdoor facing surface 30 and the indoor facing surface 31 of the upper and lower panels 3 are aligned.

[0127] In the left diagram of FIG. 21 , the lower outdoor-side visible surface 302 of the lower end portion of the upper panel 3 and the upper end portion (the folded-back portion subjected to hemming) of the outdoor-side rising piece 303 of the upper end portion of the lower panel 3 are close to each other (separated in this embodiment), the outdoor-side upper surface 320 of the upper surface portion 32 of the upper end portion of the lower panel 3 is located directly below the outdoor-side lower surface 330 of the lower surface portion 33 of the lower end portion of the upper panel 3, the outdoor-side inclined surface 321 of the upper surface portion 32 of the upper end portion of the lower panel 3 is located directly below the outdoor-side inclined surface 331 of the lower surface portion 33 of the lower end portion of the upper panel 3, and the central horizontal surface 322 of the upper surface portion 32 of the upper end portion of the lower panel 3 is located directly below the buffer / airtight member 15 provided on the central horizontal surface 332 of the lower surface portion 33 of the lower end portion of the upper panel 3. 21 , the indoor side inclined surface 323 of the upper surface portion 32 at the upper end portion of the lower panel 3 is located directly below the indoor side inclined surface 333 of the lower surface portion 33 at the lower end portion of the upper panel 3, the indoor side vertical surface 324 of the upper surface portion 32 at the upper end portion of the lower panel 3 is located slightly outside the indoor side of the indoor side vertical surface 334 of the lower surface portion 33 at the lower end portion of the upper panel 3 (the indoor side vertical surface 334 hangs down close to the indoor side vertical surface 324), and the elastic water-stopping member 16 (upper surface 164) is located directly below the indoor side lower surface 335 of the lower surface portion 33 at the lower end portion of the upper panel 3 in the indoor side part of the upper end portion of the lower panel 3 (a groove portion formed by the indoor side vertical surface 324, the indoor side lower surface 325, and the indoor side rising piece 310). When the upper panel 3 moves downward relative to the lower panel 3 from the state shown in the left diagram of FIG. 21 , the state shown in FIG. 19 is obtained.

[0128] The central diagram of Fig. 21 shows a state in which the upper panel 3 is slightly displaced indoors relative to the lower panel 3 when the adjacent panels 3 are lowered. When the shutter curtain 1 is displaced indoors when it is lowered, the indoor facing surface 31 of the panel 3 abuts against the watertight rubber member 55, so it does not displace further indoors from the state shown in the central diagram of Fig. 21. In the central diagram of Fig. 21, the corner of the outdoor-side inclined surface 331 at the lower end of the upper panel 3 and the central horizontal plane 330 is located slightly indoors from the corner of the outdoor-side upper surface 320 at the upper end of the lower panel 3 and the outdoor-side inclined surface 321, and when the upper panel 3 moves downward relative to the lower panel 3 from this state, the outdoor-side inclined surface 331 of the upper panel 3 is guided by the outdoor-side inclined surface 321 of the lower panel 3, and the upper panel 3 moves outdoor relative to the lower panel 3, resulting in the state shown in Fig. 19.

[0129] The right diagram of Figure 21 shows a state in which, when the vertically adjacent panels 3 descend, the upper panel 3 is slightly displaced toward the outdoors relative to the lower panel 3. If the shutter curtain 1 is displaced toward the outdoors when it descends, the lower outdoor facing surface 302 at the lower end abuts against the outdoor rising piece 303 at the upper end of the lower panel 3, so it will not be displaced further toward the outdoors from the state shown in the right diagram of Figure 21. In the right-hand diagram of Figure 21, the corner of the indoor side vertical surface 334 and the indoor side lower surface 335 at the lower end of the upper panel 3 is located slightly indoors rather than the corner of the indoor side inclined surface 323 and the indoor side vertical surface 324 at the upper end of the lower panel 3, and when the upper panel 3 moves downward relative to the lower panel 3 from this state, the lower outdoor side visible surface 302 at the lower end is guided downward while sliding against the outdoor side rising piece 303 at the upper end of the lower panel 3, and the indoor side vertical surface 334 at the lower end of the upper panel 3 is guided downward while sliding against the indoor side vertical surface 324 of the lower panel 3, resulting in the state shown in Figure 19.

[0130] 19 shows a state in which the lower end portion of the upper panel 3 and the upper end portion of the lower panel 3 are fitted together (the shutter curtain 1 is in a fully closed position and in a non-vertical compression state) from the state shown in the left diagram of FIG. 21. In FIG. 19, the outdoor-side rising piece 303 at the upper end portion of the lower panel 3 is close to the outdoor side of the lower outdoor-side visible surface 302 at the lower end portion of the upper panel 3 (the outdoor-side rising piece 303 is located at a step formed by the lower edge portion 301 and the lower outdoor-side visible surface 302), the outdoor-side lower surface 330 of the lower surface portion 33 at the lower end portion of the upper panel 3 is close to the outdoor-side upper surface 320 of the upper surface portion 32 at the upper end portion of the lower panel 3 (separated and non-contacting in this embodiment), the outdoor-side inclined surface 331 of the lower surface portion 33 at the lower end portion of the upper panel 3 is close to the outdoor-side inclined surface 321 of the upper surface portion 32 at the upper end portion of the lower panel 3 (separated and non-contacting in this embodiment), and the outdoor-side inclined surface 331 of the lower surface portion 33 at the lower end portion of the upper panel 3 is close to the outdoor-side inclined surface 321 of the upper surface portion 32 at the upper end portion of the lower panel 3 (separated and non-contacting in this embodiment). The cushioning / airtight member 15 provided on the central horizontal surface 332 of the underside portion 33 at the end portion abuts against the central horizontal surface 322 of the upper surface portion 32 at the upper end portion of the lower panel 3, the indoor side inclined surface 333 of the underside portion 33 at the lower end portion of the upper panel 3 is close to the indoor side inclined surface 323 of the upper surface portion 32 at the upper end portion of the lower panel 3 (separated and non-contacting in this embodiment), the indoor side vertical surface 334 of the underside portion 33 at the lower end portion of the upper panel 3 is close to the indoor side of the indoor side vertical surface 324 of the upper surface portion 32 at the upper end portion of the lower panel 3, and the indoor side underside surface 335 of the underside portion 33 at the lower end portion of the upper panel 3 abuts against the elastic water-stopping member 16 (upper surface 164) provided in the indoor side portion of the upper end portion of the panel 3 of the lower panel 3. The panels 2, 3, and 4 according to this embodiment are assembled from surface materials made of steel plates of a predetermined shape, and therefore have the disadvantage that it is difficult to achieve precision compared to aluminum-formed panels. In this embodiment, the above-mentioned fitting structure is adopted to suppress rattling between the panels caused by precision errors. In addition, the lower end portion of the upper panel and the upper end portion of the lower panel are in close contact with each other via the buffer / airtight member 15 that functions as a damper, so that even if there is a precision error, the panels can be ensured to be in close contact with each other, and the downward pressing force by the vertical compression mechanism 7 can be effectively applied downward.

[0131] 20 shows a state in which the panel is vertically compressed in the state shown in FIG. 19. In FIG. 20, the outdoor-side rising piece 303 at the upper end portion of the lower panel 3 is close to the outdoor side of the lower outdoor-side visible surface 302 at the lower end portion of the upper panel 3 (the outdoor-side rising piece 303 is located at a step formed by the lower edge portion 301 and the lower outdoor-side visible surface 302), the outdoor-side lower surface 330 of the lower surface portion 33 at the lower end portion of the upper panel 3 is in contact with the outdoor-side upper surface 320 of the upper surface portion 32 at the upper end portion of the lower panel 3, the outdoor-side inclined surface 331 of the lower surface portion 33 at the lower end portion of the upper panel 3 is close to the outdoor-side inclined surface 321 of the upper surface portion 32 at the upper end portion of the lower panel 3 (separated and in a non-contact state in this embodiment), and the central horizontal line of the lower surface portion 33 at the lower end portion of the upper panel 3 is in contact with the outdoor-side upper surface 320 of the upper surface portion 32 at the upper end portion of the lower panel 3 (separated and in a non-contact state in this embodiment). The cushioning / airtight member 15 provided on the surface 332 is in a crushed state between the central horizontal plane 322 of the upper surface portion 32 at the upper end portion of the lower panel 3, the indoor side inclined surface 333 of the lower surface portion 33 at the lower end portion of the upper panel 3 is close to the indoor side inclined surface 323 of the upper surface portion 32 at the upper end portion of the lower panel 3 (separated and non-contacting in this embodiment), the indoor side vertical surface 334 of the lower surface portion 33 at the lower end portion of the upper panel 3 is close to the indoor side of the indoor side vertical surface 324 of the upper surface portion 32 at the upper end portion of the lower panel 3, and the indoor side lower surface 335 of the lower surface portion 33 at the lower end portion of the upper panel 3 is pressing downwardly on the elastic water-stopping member 16 provided in the indoor side portion of the upper end portion of the panel 3 of the lower panel 3.

[0132] [C-5] Position of vertical reinforcement in shutter curtain As shown in Fig. 3 and Fig. 8, five sets of vertical reinforcement units each consisting of a first vertical reinforcement 27, a second vertical reinforcement 28, and a third vertical reinforcement 29 that are continuous in the panel height direction (in this embodiment, they are continuous so as to overlap in the height direction via a horizontal reinforcement) are provided at intervals in the panel width direction in the top panel 2 according to this embodiment. As shown in Fig. 3 and Fig. 11, five sets of vertical reinforcement units each consisting of a first vertical reinforcement 37, a second vertical reinforcement 38, and a third vertical reinforcement 39 that are continuous in the panel height direction (in this embodiment, they are continuous so as to overlap in the height direction via a horizontal reinforcement) are provided at intervals in the panel width direction in the panel 3 according to this embodiment. As shown in Fig. 3 and Fig. 16, five sets of vertical reinforcement units each consisting of a first vertical reinforcement 47 and a second vertical reinforcement 48 that are continuous in the panel height direction (in this embodiment, they are continuous so as to overlap in the height direction via a horizontal reinforcement) are provided at intervals in the panel width direction in the bottom panel 4 according to this embodiment. The internal space of the top panel 2, panel 3, and bottom panel main body 4' according to this embodiment is divided into a plurality of spaces (rooms) by a plurality of horizontal reinforcing members and a plurality of vertical reinforcing members. This will be described using the panel 3 as a representative example. As shown in Fig. 11A (see Figs. 11 and 13), the internal space of the panel 3 is divided by the intermediate horizontal reinforcing member 35 and the lower horizontal reinforcing member 36 into an upper area between the upper surface portion 32 and the intermediate horizontal reinforcing member 35, an intermediate area between the intermediate horizontal reinforcing member 35 and the lower horizontal reinforcing member 36, and a lower area between the lower horizontal reinforcing member 36 and the lower surface portion 33. The upper region is further divided into a first space 3A, a second space 3B, a third space 3C, a fourth space 3D, a fifth space 3E, and a sixth space 3F by five first vertical reinforcements 37 extending vertically with gaps in the width direction of the panel, the middle region is further divided into a seventh space 3G, an eighth space 3H, a ninth space 3I, a tenth space 3J, an eleventh space 3K, and a twelfth space 3L by five second vertical reinforcements 38 extending vertically with gaps in the width direction of the panel, and the lower region is further divided into a thirteenth space 3M, a fourteenth space 3N, a fifteenth space 3O, a sixteenth space 3P, a seventeenth space 3Q, and an eighteenth space 3R by five third vertical reinforcements 39 extending vertically with gaps in the width direction of the panel.The first vertical reinforcement members 37 in the upper region are formed with the 19th space 3a, the 20th space 3b, the 21st space 3c, the 22nd space 3d, and the 23rd space 3e, respectively. The second vertical reinforcement members 38 in the middle region are formed with the 24th space 3f, the 25th space 3g, the 26th space 3h, the 27th space 3i, and the 28th space 3j, respectively. The third vertical reinforcement members 39 in the lower region are formed with the 29th space 3k, the 30th space 3l, the 31st space 3m, the 32nd space 3m, and the 33rd space 3o, respectively. Among these 33 spaces, adjacent spaces communicate with each other through at least one hole (hole 3710 in the first vertical reinforcement 37, hole 3810 in the second vertical reinforcement, drainage hole in the horizontal surface 350 of the middle horizontal reinforcement 35, drainage hole in the horizontal surface 360 ​​of the lower horizontal reinforcement 36) or opening (opening 3910 below the third vertical reinforcement 39), allowing water to flow between the spaces. In the side portion 34 of the panel 3, holes 340, gaps 341, and openings 342 are formed corresponding to the rooms 3A, 3G, 3M, 3F, 3L, and 3R (see FIG. 15). In the lower surface portion 33 of the panel 3, holes or openings are formed corresponding to the rooms 3M, 3k, 3N, 3l, 3O, 3m, 3P, 3n, 3Q, 3o, and 3R. Water that has seeped into the interior of the panel 3 can be drained to the outside through the side portions 34 and bottom portion 33 of the panel 3, so that, for example, when the floodwaters subside after rising, no water remains inside the panel 3. The above explanation of the structure of the panel 3 can be used in the explanation of the top panel 2 and the bottom panel main body 4'.

[0133] As shown in Fig. 3, the vertical reinforcement unit of the top panel 2, the vertical reinforcement unit of the panel 3, and the vertical reinforcement unit of the bottom panel 4 are aligned in the height direction. In this embodiment, three vertical compression mechanisms 7 are arranged at intervals in the opening width direction, and three compressed areas (compressed recesses 221 in this embodiment) are provided in the top panel 3 to correspond to the three vertical compression mechanisms 7, and the upper ends of the left and right vertical reinforcement units and the central vertical reinforcement unit of the five sets of vertical reinforcement units of the top panel 2 are located in the compressed areas. With this configuration, each panel 2, 3, 4 can resist the downward pressing force of the vertical compression mechanisms 7, and the pressing force can be effectively applied downward.

[0134] [D]Water stop structure [D-1] Water-stopping structure between panels in a shutter curtain in the fully closed position When the shutter curtain 1 in the fully closed position is subjected to vertical compression, a water-stopping or watertight structure is formed between the lower end portion of the top panel 2 and the upper end portion of panel 3, between the lower end portion of panel 3 and the upper end portion of panel 3, and between the lower end portion of panel 3 and the upper end portion of the bottom panel 4.

[0135] Since the configuration of the lower end portion of the top panel 2 is the same as the configuration of the lower end portion of panel 3, and the configuration of the upper end portion of the bottom panel 4 is the same as the configuration of the upper end portion of panel 3, the water-stopping structure between the panels of the shutter curtain 1 in this embodiment will be explained based on the water-stopping structure of the vertically adjacent panels 3 in the shutter curtain 1 in the fully closed position.

[0136] In this embodiment, the water stop structure is formed in the indoor side part of the shutter curtain 1 in the fully closed position. In the indoor side part near the upper end of the panel 3, a groove is formed extending in the panel width direction from the indoor side vertical surface 324, the indoor side lower surface 325, and the indoor side rising piece 310, and a long elastic water stop member 16 is fitted in the groove. When the shutter curtain 1 descends, the elastic water stop member 16 of the lower panel 3 and the indoor side lower surface 335 of the upper panel 3 are separated (see the left diagram in FIG. 4), and in the fully closed position (non-vertical compression state) of the shutter curtain 1, the indoor side lower surface 335 of the upper panel 3 abuts against the upper surface 164 of the elastic water stop member 16 of the lower panel 3 (see FIG. 19). When the shutter curtain 1 in the fully closed position is brought into a vertically compressed state from the state shown in Figure 19, the upper surface 164 of the elastic water-stopping member 16 of the lower panel 3 abuts the indoor side lower surface 335 of the upper panel 3, and the elastic water-stopping member 16 is pressed downward, causing the pressed elastic water-stopping member 16 to close the gap between the lower end portion of the panel 3 and the indoor side portion of the upper end portion of the panel 3, thereby forming a water-stopping structure (see Figure 20).

[0137] The groove portion formed in the indoor side portion near the upper end of the panel 3 has a roughly U-shaped cross section composed of the bottom (indoor side lower surface 325), the inner surface of the outer facing piece (indoor side rising piece 310) rising from the outer end of the bottom (indoor side lower surface 325), and a first portion 3240 facing the outer facing piece (indoor side rising piece 310) of the inner facing surface (indoor side vertical surface 324) located on the inside of the bottom (indoor side lower surface 325), and the inner facing surface (indoor side vertical surface 324) has a second portion 3241 adjacent to the first portion 3240 and located outside the groove (above the first portion 3240 and above the upper end of the outer facing piece (indoor side rising piece 310)).

[0138] As shown in Figures 24 and 25, the long elastic water-stopping member 16 fitted into the groove extending in the panel width direction is integrally formed of a hard elastic portion 16A located inside the groove and a soft elastic portion 16B located outside the groove. In other words, the soft elastic portion 16B is integrally formed on a base (foundation) formed of the hard elastic portion 16A. In this embodiment, the hard elastic portion 16A is formed of flame-retardant rubber (chloroprene rubber, etc.), and the soft elastic portion 16B is formed of flame-retardant rubber sponge (chloroprene rubber sponge, etc.), but these materials are merely examples and are not limited thereto. In this embodiment, the elastic water-stopping member 16 is integrally formed from a hard elastic portion 16A located within the groove and a soft elastic portion 16B located outside the groove, thereby preventing as much as possible the deformation of the base (foundation) of the elastic water-stopping member 16 within the groove due to the panel's own weight or vertical compression, and maintaining the shape of the base (foundation) of the elastic water-stopping member 16.

[0139] 24, the hard elastic part 16A has a bottom surface 160, an inner facing surface 161, an outer facing surface 162, and a connecting surface (upper surface) 163, and the soft elastic part 16B has an abutted surface (upper surface) 164, an inner facing surface 165, an outer facing surface 166, and a connecting surface (lower surface) 167 that comes into close contact with the connecting surface (upper surface) 163. Note that in the explanation of the elastic water-stopping member 16, the "inner surface" means the side closer to the indoor side vertical surface 324 when fitted into the groove, and the "outer surface" means the side farther from the indoor side vertical surface 324 when fitted into the groove.

[0140] The connection surface (upper surface) 163 of the hard elastic portion 16A consists of a first horizontal surface 1630 and a first inclined surface 1631 that inclines from the outside of the first horizontal surface 1630 toward the bottom surface 160, and the connection surface (lower surface) 167 of the soft elastic portion 16B consists of a second horizontal surface 1670 and a second inclined surface 1671 that inclines from the outside of the second horizontal surface 1670 away from the upper surface 164, and the first horizontal surface 1630 and the second horizontal surface 1670, and the first inclined surface 1631 and the second inclined surface 1671 are in close contact with each other.

[0141] The upper surface of the elastic water-stopping member 16 is formed by the upper surface 164 of the soft elastic portion 16B, and the bottom surface of the elastic water-stopping member 16 is formed by the bottom surface 160 of the hard elastic portion 16A. The inner facing surface 161 of the hard elastic portion 16A and the inner facing surface 165 of the soft elastic portion 16B are flush with each other, and the inner facing surface 161 of the hard elastic portion 16A and the inner facing surface 165 of the soft elastic portion 16B form the inner facing surface of the elastic water-stopping member 16.

[0142] A plurality of (four in the illustrated embodiment) protrusions 1610 extending in the panel width direction are formed on the inner facing surface 161 of the hard elastic portion 16A. That is, the inner facing portion of the hard elastic portion 16A is composed of the inner facing surface 161 and the plurality of protrusions 1610 formed on the inner facing surface 161 and extending in the panel width direction.

[0143] The outer facing surface 166 of the soft elastic part 16B is composed of a first part 1660 on the bottom surface 160 side and a second part 1661 on the abutted surface (upper surface) 164 side. As described later, the outer facing surface 166 of the soft elastic part 16B is composed of a first part 1660 that is in close contact with the inner surface of the outer facing piece (indoor side rising piece 310) and a second part 1661 located outside the groove part. The outer facing part 162 of the hard elastic part 16A is composed of a protruding piece 1620 that protrudes at an angle so as to be away from the bottom surface 160, and a recessed part 1621 that is adjacent to the upper side of the protruding piece 1620 and allows the protruding piece 1620 to be elastically deformed. In a state where no external force is applied to the elastic water-stopping member 16, the tip of the protruding piece 1620 is located slightly inside the outer facing surface 166 of the soft elastic part 16B, but may be approximately coincident.

[0144] 25, the hard elastic part 16A of the elastic water-stopping member 16 is fitted into the groove, and most of the soft elastic part 16B of the elastic water-stopping member 16 is located outside the groove (above the groove), and only the outer and lower part is located inside the groove. When the elastic water-stopping member 16 is fitted into the groove, the bottom surface of the elastic water-stopping member 16 (bottom surface 160 of the hard elastic part 16A) abuts against the bottom (indoor side lower surface 325), and the inner facing part of the hard elastic part 16A abuts against the first part 3240 of the inner facing surface of the groove (indoor side vertical surface 324) via the protrusion 1610, and the outer facing part 162 of the hard elastic part 16A is in close contact with the inner surface of the outer facing piece (indoor side rising piece 310) via the protrusion 1620.

[0145] An outer portion (1660) of the portion located in the groove of the soft elastic portion 16B is in close contact with the inner surface of the outer facing piece (the indoor side rising piece 310). Specifically, the portion surrounded by the lower portion (the first portion 1660) of the outer facing surface 166 of the soft elastic portion 16B and the second inclined surface 1671 is located in the groove, and the first portion 1660 of the outer facing surface 166 is in a crushed state (indicated by 1660') in close contact with the inner surface of the outer facing piece (the indoor side rising piece 310).

[0146] The inner facing portion of the hard elastic part 16A abuts against the first part 3240 of the inner facing surface of the groove part (the indoor side vertical surface 324) via the protrusion 1610, and a force is applied in the direction pressing the elastic water-stopping member 16 against the inner surface of the outer facing piece (the indoor side rising piece 310), so that the first part 1660 of the outer facing surface 166 is in a crushed state (1660') and adheres closely to the inner surface of the outer facing piece (the indoor side rising piece 310), and the protrusion 1620 of the hard elastic part 16A is elastically deformed upward and its tip side is in adherence to the inner surface of the outer facing piece (the indoor side rising piece 310).

[0147] When the elastic water-stopping member 16 is fitted into the groove, the protrusion 1620 of the outer facing portion 162 of the hard elastic portion 16A extends at an angle away from the bottom surface 160, and its tip side is in close contact with the inner surface of the outer facing piece (the indoor side rising piece 310), thereby pushing the elastic water-stopping member 16 in the direction in which it would slip out of the groove, thereby preventing the elastic water-stopping member 16 from slipping out of the groove.

[0148] The inner visible surface 161 of the hard elastic portion 16A and the inner visible surface 165 of the soft elastic portion 16B are flush with each other, and in the non-vertical compression position, the inner visible surface 165 of the soft elastic portion 16B is in close proximity to (spaced apart in this embodiment and in a non-contact state) the second portion 3241 of the inner visible surface of the groove portion (the indoor side vertical surface 324) (FIG. 25). In the vertical compression position, the hard elastic portion 16A is pressed in the height direction, so that the inner visible surface 165 is brought into close contact with the second portion 3241 (FIG. 26).

[0149] In the vertical compression position of the elastic water-stopping member 16, the indoor side lower surface 335 of the upper panel 3 is pressed against the upper surface 164 of the elastic water-stopping member 16 of the lower panel 3, thereby forming a water-stopping structure in the indoor side area between the lower end area of ​​the upper panel 3 and the upper end area of ​​the lower panel 3. Furthermore, as shown in Fig. 20, in the vertical compression position of the elastic water-stopping member 16, the elastic water-stopping member 16 is pressed in the height direction, thereby causing the lower end area (area adjacent to the first area 1660) of the second area 1661 of the outer facing surface 166 of the soft elastic portion 16B to come into close contact with the tip edge (upper edge) 3100 of the outer facing piece (indoor side rising piece 310), thereby forming a water-stopping structure.

[0150] As shown in Figure 20, the inner visible surface 165 of the soft elastic portion 16B of the elastic water-stopping member 16 is in close contact with the second portion 3241, thereby sealing the gap between the elastic water-stopping member 16 and the inner visible surface (the indoor side vertical surface 324), and the bottom surface 160 of the elastic water-stopping member 16 is in close contact with the bottom surface (325) of the groove. Even if water seeps in from the interface between the groove and the elastic water-stopping member 16, the lower end portion (portion adjacent to the first portion 1660) of the second portion 1661 of the outer visible surface 166 of the soft elastic portion 16B is in close contact with the tip edge (upper edge) 3100 of the outer visible piece (the indoor side rising piece 310), thereby preventing water from entering the indoor side.

[0151] The second portion 1661 of the outer facing surface 166 bulges outward (indicated by 1661') from the outer surface of the outer facing piece (the indoor side rising piece 310). Note that the bulging shape of the second portion 1661 shown in FIG. 26 is one example, and the bulging shape may differ depending on the way in which force is applied. As described later, in a vertically compressed or horizontally compressed state, the bulging second portion 1661' of the outer facing surface 166 is adapted to come into close contact with the watertight rubber member 55.

[0152] [D-2] Water-stopping structure between the bottom panel body and the seat plate in a shutter curtain in the fully closed position When the shutter curtain 1 in the fully closed position is vertically compressed, a water-stopping structure is formed in the bottom panel 4 between the bottom panel body 4' and the movable seat plate 6. In this embodiment, the water-stopping structure is formed in the indoor side portion of the bottom panel 4 of the shutter curtain 1 in the fully closed position.

[0153] A groove is formed on the indoor side of the movable seat plate 6, extending from the indoor side of the bottom surface 60, the indoor side rising piece 62, and the indoor side visible surface 64 in the length direction of the movable seat plate 6 (width direction of the bottom panel 4), and an indoor side elastic water stop member 16β is fitted into the groove. When the shutter curtain 1 descends, the indoor side lower surface 431 of the lower end portion of the main body 4' and the elastic water stop member 16β provided in the groove portion on the indoor side of the movable seat plate 6 are separated (see FIG. 22), and when the shutter curtain 1 is in the fully closed position (non-vertical compression state), the indoor side lower surface 431 of the lower end portion of the main body 4' abuts against the upper surface 164 of the elastic water stop member 16β (see FIG. 22). When the shutter curtain 1 in the fully closed position is moved from the state shown in Figure 22 to a vertically compressed state, the upper surface 164 of the elastic water-stopping member 16β is pressed downward with the indoor side lower surface 431 of the lower end portion of the main body 4' in contact with the upper surface 164 of the elastic water-stopping member 16β, so that the pressed elastic water-stopping member 16β closes the gap between the lower end portion of the panel main body 4' and the indoor side portion of the movable base plate 6, thereby forming a water-stopping structure (see Figure 28).

[0154] The groove formed in the indoor side portion of the upper end portion of the panel 3 has a roughly U-shaped cross section composed of a bottom (the indoor side portion of the bottom surface 60), the inner surface of the outer facing piece (indoor side rising piece 62) rising from the outer end of the bottom, and a first portion 640 facing the outer facing piece (indoor side rising piece 62) of the inner facing surface (indoor side facing surface 64) located on the inside of the bottom, and the inner facing surface (indoor side facing surface 64) has a second portion 641 adjacent to the first portion 640 and located outside the groove (above the first portion 640 and above the upper end of the outer facing piece (indoor side rising piece 62)).

[0155] As shown in Fig. 24 and Fig. 27, the long elastic water-stopping member 16β fitted into the groove extending in the panel width direction (seat board width direction) is integrally formed with a hard elastic part 16A located in the groove and a soft elastic part 16B whose upper part is located outside the groove. In other words, the soft elastic part 16B is integrally formed on a base (foundation) formed by the hard elastic part 16A. In this embodiment, the hard elastic part 16A is formed from flame-retardant rubber (chloroprene rubber, etc.), and the soft elastic part 16B is formed from flame-retardant rubber sponge (chloroprene rubber sponge, etc.), but these materials are merely examples and are not limited. In this embodiment, the elastic water-stopping member 16 is integrally formed from a hard elastic portion 16A located within the groove and a soft elastic portion 16B located outside the groove, thereby preventing as much as possible the deformation of the base (foundation) of the elastic water-stopping member 16 within the groove due to the panel's own weight or vertical compression, and maintaining the shape of the base (foundation) of the elastic water-stopping member 16.

[0156] The basic configuration of the elastic water-stopping member 16β is similar to that of the elastic water-stopping member 16, and can be described with reference to Fig. 24. As shown in Fig. 24, the hard elastic part 16A has a bottom surface 160, an inner facing surface 161, an outer facing surface 162, and a connection surface (upper surface) 163, and the soft elastic part 16B has an abutted surface (upper surface) 164, an inner facing surface 165, an outer facing surface 166, and a connection surface (lower surface) 167 that is in close contact with the connection surface (upper surface) 163. Note that in the description of the elastic water-stopping member 16, the "inner surface" means the side closer to the indoor facing surface 64 of the movable seat plate 6 when it is fitted into the groove, and the "outer surface" means the side farther from the indoor facing surface 64 when it is fitted into the groove.

[0157] The connection surface (upper surface) 163 of the hard elastic portion 16A consists of a first horizontal surface 1630 and a first inclined surface 1631 that inclines from the outside of the first horizontal surface 1630 toward the bottom surface 160, and the connection surface (lower surface) 167 of the soft elastic portion 16B consists of a second horizontal surface 1670 and a second inclined surface 1671 that inclines from the outside of the second horizontal surface 1670 away from the upper surface 164, and the first horizontal surface 1630 and the second horizontal surface 1670, and the first inclined surface 1631 and the second inclined surface 1671 are in close contact with each other.

[0158] The upper surface of the elastic water-stopping member 16 is formed by the upper surface 164 of the soft elastic portion 16B, and the bottom surface of the elastic water-stopping member 16 is formed by the bottom surface 160 of the hard elastic portion 16A. The inner facing surface 161 of the hard elastic portion 16A and the inner facing surface 165 of the soft elastic portion 16B are flush with each other, and the inner facing surface 161 of the hard elastic portion 16A and the inner facing surface 165 of the soft elastic portion 16B form the inner facing surface of the elastic water-stopping member 16.

[0159] A plurality of (three in the illustrated embodiment, see FIG. 27) protrusions 1610 extending in the panel width direction are formed on the inner facing surface 161 of the hard elastic part 16A. That is, the inner facing part of the hard elastic part 16A is composed of the inner facing surface 161 and a plurality of protrusions 1610 formed on the inner facing surface 161 and extending in the panel width direction.

[0160] The outer facing surface 166 of the soft elastic part 16B is composed of a first part 1660 on the bottom surface 160 side and a second part 1661 on the abutted surface (upper surface) 164 side. As described later, the outer facing surface 166 of the soft elastic part 16B is composed of a first part 1660 that is in close contact with the inner surface of the outer facing piece (indoor side rising piece 62) and a second part 1661 located outside the groove part. The outer facing part 162 of the hard elastic part 16A is composed of a protruding piece 1620 that protrudes at an angle so as to be away from the bottom surface 160, and a recessed part 1621 that is adjacent to the upper side of the protruding piece 1620 and allows the protruding piece 1620 to be elastically deformed. In a state where no external force is applied to the elastic water-stopping member 16, the tip of the protruding piece 1620 is located slightly inside the outer facing surface 166 of the soft elastic part 16B, but may be approximately coincident.

[0161] As shown in Fig. 27, the hard elastic part 16A of the elastic water-stopping member 16 is fitted into the groove, and the lower part of the soft elastic part 16B of the elastic water-stopping member 16 is located inside the groove, and the upper part is located outside the groove (above the groove). When the elastic water-stopping member 16 is fitted into the groove, the bottom surface of the elastic water-stopping member 16 (bottom surface 160 of the hard elastic part 16A) abuts against the bottom (the indoor side part of the bottom surface 60), and the inner facing part of the hard elastic part 16A abuts against the first part 640 of the inner facing surface of the groove (indoor side facing surface 64) via the protrusion 1610. The outer facing part 162 of the hard elastic part 16A is in close contact with the inner surface of the outer facing piece (indoor side rising piece 62) via the protrusion 1620.

[0162] An outer portion (1660) of the portion of the soft elastic portion 16B located in the groove is in close contact with the inner surface of the outer facing piece (the indoor side rising piece 62). Specifically, the lower portion of the soft elastic portion 16B is located in the groove, and the first portion 1660 of the outer facing surface 166 is in a crushed state (indicated by 1660') in close contact with the inner surface of the outer facing piece (the indoor side rising piece 62).

[0163] The inner facing portion of the hard elastic part 16A abuts against the first part 640 of the inner facing surface (indoor facing surface 64) of the groove part via the protrusion 1610, and a force is applied in the direction of pressing the elastic water-stopping member 16 against the inner surface of the outer facing piece (indoor side rising piece 62), so that the first part 1660 of the outer facing surface 166 is in a crushed state (1660') and adheres closely to the inner surface of the outer facing piece (indoor side rising piece 62), and the protrusion 1620 of the hard elastic part 16A is elastically deformed upward and has its tip side in close contact with the inner surface of the outer facing piece (indoor side rising piece 62).

[0164] When the elastic water-stopping member 16 is fitted into the groove, the protrusion 1620 of the outer facing portion 162 of the hard elastic portion 16A extends at an angle away from the bottom surface 160, and its tip side is in close contact with the inner surface of the outer facing piece (the indoor side rising piece 62), thereby pushing against the elastic water-stopping member 16β in the direction of slipping out of the groove, thereby preventing the elastic water-stopping member 16 from slipping out of the groove.

[0165] The inner facing surface 161 of the hard elastic portion 16A and the inner facing surface 165 of the soft elastic portion 16B are flush with each other, and in the non-vertical compression position, the inner facing surface 165 of the soft elastic portion 16B is in close proximity to (spaced apart in this embodiment and in a non-contact state with) the second portion 641 of the inner facing surface of the groove portion (the indoor facing surface 64) (FIG. 27). In the vertical compression position, the hard elastic portion 16A is pressed in the height direction, so that the inner facing surface 165 is brought into close contact with the second portion 641 (FIG. 28).

[0166] In the vertical compression position of the elastic water-stopping member 16β, the indoor side lower surface 431 of the bottom panel main body 4' is pressed against the upper surface 164 of the elastic water-stopping member 16β provided in the indoor side groove portion of the movable seat plate 6, thereby forming a water-stopping structure in the indoor side portion between the lower end portion of the bottom panel main body 4' and the movable seat plate 6. Furthermore, as shown in Fig. 28, in the vertical compression position of the elastic water-stopping member 16β, the elastic water-stopping member 16β is pressed in the height direction, thereby causing the lower end portion (portion adjacent to the first portion 1660) of the second portion 1661 of the outer facing surface 166 of the soft elastic portion 16B to come into close contact with the tip edge (upper edge) 620 of the outer facing piece (indoor side rising piece 62), thereby forming a water-stopping structure.

[0167] As shown in Figure 28, the inner facing surface 165 of the soft elastic portion 16B of the elastic water-stopping member 16β is in close contact with the second portion 641, thereby sealing the gap between the elastic water-stopping member 16β and the inner facing surface (the indoor side facing surface 64), and the bottom surface 160 of the elastic water-stopping member 16β is in close contact with the indoor side portion of the bottom surface 60 of the groove. Even if water seeps in from the interface between the groove and the elastic water-stopping member 16β, the lower end portion (portion adjacent to the first portion 1660) of the second portion 1661 of the outer facing surface 166 of the soft elastic portion 16B is in close contact with the tip edge (upper edge) 620 of the outer facing piece (the indoor side rising piece 62), thereby preventing water from entering the indoor side.

[0168] The second portion 1661 of the outer visible surface 166 bulges outward (indicated by 1661') from the outer surface of the outer visible piece (the indoor side rising piece 62. Note that the bulging shape of the second portion 1661 shown in FIG. 28 is one example, and the bulging shape may differ depending on the way in which force is applied, etc. As will be described later, in a vertically compressed or horizontally compressed state, the bulging second portion 1661' of the outer visible surface 166 is adapted to come into close contact with the watertight rubber member 55.

[0169] A groove is formed in the outdoor portion of the movable seat plate 6, extending in the length direction of the movable seat plate 6 (width direction of the bottom panel 4) from the outdoor portion of the bottom surface 60, the outdoor rising piece 61, and the outdoor facing surface 63, and an outdoor elastic water-stopping member 16α is fitted into the groove. When the shutter curtain 1 is in the fully closed position, the outdoor lower surface 430 of the panel body 4' abuts against the outdoor elastic water-stopping member 16α, which will be described later in the explanation of the airtight structure.

[0170] [D-3] Water-stopping structure of the bottom end of the shutter curtain in the fully closed position When the shutter curtain 1 in the fully closed position is vertically compressed, a water-stopping structure is formed between the lower end portion of the bottom panel 4 (in this embodiment, the movable seat plate 6) and the floor surface. An elastic water-stopping member 19 is provided across the entire width of the bottom surface 60 of the movable seat plate 6. As shown in Fig. 18, the elastic water-stopping member 19 is composed of end water-stopping members 191 provided on the underside of both end portions of the bottom surface 60 of the movable seat plate 6, and two narrow intermediate water-stopping members 190 provided on the underside of the intermediate portion (in the width direction) of the bottom surface 60 and in close contact with the end water-stopping members 191. The elastic water-stopping members 19 are fixed to the bottom surface 60 of the seat plate 6 by screws.

[0171] In this embodiment, a base elastic member 190' is provided on the bottom surface 60 of the movable seat plate 6 between the end waterproof members 191 at both ends, and the narrow intermediate waterproof member 190 is fixed to the base elastic member 190'. The total thickness of the intermediate waterproof member 190 and the base elastic member 190' is approximately the same as the thickness of the end waterproof member 191, but in this embodiment, the lower surface of the narrow intermediate waterproof member 190 bulges slightly downward in a cross-sectional view cut in the projection direction (see FIG. 22). In this embodiment, the base elastic member 190' is made of flame-retardant rubber (chloroprene rubber, etc.), and the end waterproof members 191 and the intermediate waterproof member 190 are made of flame-retardant rubber sponge (chloroprene rubber sponge, etc.) that is softer than the base elastic member 190', but these materials are merely examples and are not limited.

[0172] The end water-stopping members 191 at both ends and the base elastic member 190' have a projected dimension that is the same as the projected dimension of the bottom surface 60 of the seat board 6 (the projected dimension of the bottom panel main body 4'), and the two narrow intermediate water-stopping members 190 are both provided to fit within the projected dimension of the bottom surface 60 of the seat board 6. Of the two intermediate water-stopping members 190, the intermediate water-stopping member 190 located on the outdoor side extends between the end water-stopping members 191 at both ends at a position away from the outdoor-side facing piece 61 of the movable seat board 6 to the indoor side (inner side). The intermediate water-stopping member 190 located on the indoor side extends between the end water-stopping members 191 at both ends at a position away from the indoor-side rising piece 62 of the movable seat board 6 to the outdoor side (inner side).

[0173] The outdoor side intermediate water-stopping member 190 is positioned inside the outdoor side facing piece 61 of the movable seat plate 6, and the indoor side intermediate water-stopping member 190 is positioned inside the indoor side rising piece 62 of the movable seat plate 6, so that when the shutter curtain 1 is in the fully closed position, the intermediate water-stopping member 190 is not exposed to the outside, which improves the aesthetic appearance especially when viewed from the outdoor side.

[0174] Since the narrow intermediate water-stopping member 190 has a small contact area with the floor surface, when pressed downward with the same force (the weight of the panel when in the normal fully closed position, or the pressing pressure when pressed vertically), the surface pressure pressed against the floor surface is greater than with a wide water-stopping member, and the greater force with which it adheres to the floor surface improves airtightness and waterproofing performance.

[0175] When the shutter curtain 1 is in a fully closed position, the elastic water-stopping member 19 provided on the bottom surface 60 of the movable seat plate 6 is actually designed to be in close contact with the upper surface 90 of the sill or the sill embedded in the floor surface FL, and the expected dimensions of the upper surface 90 are limited (see FIG. 31). Here, when the shutter curtain 1 is in a vertical compression state or a horizontal compression state, when water pressure acts on the shutter curtain 1 from the outdoor side toward the indoor side, the shutter curtain 1 may be deformed or displaced to the indoor side. At this time, the elastic water-stopping member 19 will be displaced to the indoor side with respect to the upper surface 90 of the sill, but since the indoor side intermediate water-stopping member 190 is located inside the indoor side rising piece 62, even if the bottom panel 4 is displaced to the indoor side, the indoor side intermediate water-stopping member 190 and the upper surface 90 of the sill are maintained in close contact with each other (see FIG. 31).

[0176] 30, at least a portion of the end water-stopping member 191 is located within the guide body 5 in the fully closed position. The outdoor side portion of the end water-stopping member 191 is approximately flush with the outdoor side facing piece 61 of the movable seat panel 6, and the indoor side portion of the end water-stopping member 191 is approximately flush with the indoor side rising piece 62 of the movable seat panel 6. As will be described later, in the vertical compression and horizontal compression state, the indoor side portion of the end water-stopping member 191 comes into close contact with the watertight rubber member 55 together with the indoor side rising piece 62 of the movable seat panel 6.

[0177] [D-4] Water-stopping structure at both ends of the width of a shutter curtain in a fully closed position As shown in Figures 5, 6, 29, and 30, the widthwise end of the shutter curtain 1 (top panel 2, panel 3, bottom panel 4) in the fully closed position is received in the opening between the horizontal pressing member 82 on the outdoor side and the watertight rubber member 55 on the indoor side, and the outdoor side circumferential surface of the guide roller 11 at the tip of the support shaft 10 protruding from the widthwise end is in contact with or close to the guide member 53 provided on the bottom side of the guide body 5. By moving the chain up and down, each panel moves up and down in the vertical direction, guided by the outdoor side circumferential surface of the guide roller 11 of the support shaft 10 at both ends in the widthwise direction by the guide member 53 and the watertight rubber member 55 at both ends in the widthwise direction, while the outdoor side portion and the indoor side portion are in contact with the fins 54, respectively. By the outdoor side circumferential surface of the guide roller 11 contacting the guide member 53, contact between the metallic horizontal pressing member 82 and the widthwise end of the shutter curtain 1 is restricted during normal opening and closing and in the normal fully closed state.

[0178] By pressing the end of the shutter curtain 1, which is in a fully closed position (vertically compressed state), toward the indoor side by the horizontal pressing member 82, the widthwise end of the indoor side portion of the shutter curtain 1 (indoor side visible surfaces 21, 31, 41, indoor side rising piece 62, elastic water-stopping member 16, elastic water-stopping member 16β, end water-stopping member 191 of elastic water-stopping member 19) is pressed against the watertight rubber member 55, resulting in a waterproof structure extending in the height direction of both widthwise ends of the shutter curtain (see Figures 7 and 30).

[0179] When the shutter curtain 1 in the fully closed position is vertically compressed, the portion of the elastic water-stopping member 16 and the elastic water-stopping member 16β exposed to the indoor side (the second portion 1661 of the outer facing surface 166) bulges slightly indoors (1661') relative to the indoor facing surfaces 21, 31, 41 and the indoor side rising piece 62 (see FIG. 7), increasing the degree of adhesion with the watertight rubber member 55. The indoor side facing surface of the end water-stopping member 191 at the width direction end of the elastic water-stopping member 19 is flush with the indoor side facing surface 41 and the indoor side rising piece 62 of the seat panel 6, and is in close contact with the watertight rubber member 55 together with the indoor side facing surface 41 and the indoor side rising piece 62 of the seat panel 6.

[0180] [D-5] Water-stopping structure of the entire shutter curtain in both vertical and horizontal compression states When the shutter curtain is vertically compressed, the elastic water-stopping member 16 water-tightly seals the gap between the upper and lower adjacent panels across the width, the elastic water-stopping member 16β water-tightly seals the gap between the bottom panel main body 4' and the seat plate 6 across the width, and the elastic water-stopping member 19 water-tightly seals the gap between the lower end of the bottom panel 4 (the lower end of the seat plate 6) and the floor surface. When the shutter curtain 1 in the vertically compressed state is further compressed horizontally to enter a horizontally compressed state, the widthwise ends of the indoor side portion of the shutter curtain 1 (indoor side visible surfaces 21, 31, 41, indoor side rising piece 62, elastic water-stopping member 16, elastic water-stopping member 16β, end water-stopping member 191 of elastic water-stopping member 19) are pressed against the watertight rubber member 55, sealing both ends of the opening widthwise in a watertight state. When the shutter curtain is in this compressed state (vertical compression state and horizontal compression state), the space between the upper and lower panels is sealed watertight, and water-stopping lines are formed on three sides of the shutter device (both widthwise ends of the shutter curtain 1 located within the left and right guide bodies 5 and the lower end of the shutter curtain) to prevent water from entering the indoor space.

[0181] [D-5] Water-resistant structure of the surface of the bottom panel body The waterproof panel shutter according to this embodiment is provided with an obstacle detection means consisting of a movable seat plate 6 and a detection switch SW at the lower end of the bottom panel 4. When the movable seat plate 6 at the lower end of the bottom panel 4 hits the floor or an obstacle and moves upward by a predetermined amount, the detection switch SW turns ON and an obstacle detection signal is sent to the control unit of the opening / closing machine M via the cord reel CR, and the shutter curtain 1 being lowered stops. As shown in Fig. 1, the opening / closing machine M is provided in the shutter storage space above the opening at a position close to one end in the width direction, and the cord reel CR is arranged at the lintel above the opening on the indoor side of the ascending / descending path of the shutter curtain 1, and the cord reel CR and the control unit of the opening / closing machine M are electrically connected. The cable C1 of the cord reel CR extends downward along the indoor side of the shutter curtain 1 when the shutter curtain 1 is raised or lowered, and the lower end of the cable C1 is electrically connected to a relay cable C2 that penetrates the lower portion of the indoor facing surface 41 of the bottom panel main body 4', and the relay cable C2 extends inside the bottom panel main body 4' and is electrically connected to a cable C3 that extends from the detection switch SW.

[0182] 22 and 32, the relay cable C2 includes a first portion 110 located on the indoor side, a second portion 111 located on the bottom panel main body 4', and a relay cable holder 112 located between the first portion 110 and the second portion 111. The relay cable holder 112 includes a horizontally elongated lid portion 113 having an outer shape larger than a through hole formed in a lower portion of the indoor side visible surface 41 of the bottom panel main body 4', and an insertion portion 114 to be inserted into the through hole, a hole portion 1130 is formed in the lid portion 113, and a disk-shaped abutment body (rubber bush) 115 having approximately the same dimensions as the inner diameter of the insertion portion 114 is provided on the base end side of the internal space of the insertion portion 114, the abutment body 115 being larger than the hole portion 1130 and being so arranged as to block the hole portion 1130 from the inside, and the relay cable C2 is inserted into the abutment body 115. An insertion portion for the relay cable C2 is formed from a hole 1130 in the cover portion 113 and the internal space of the insertion portion 114. The relay cable C2 passes through the internal space of the insertion portion 114 and extends into the inside of the bottom panel main body 4'. The first portion 110 is provided with a terminal 116 for electrical connection with the cable C1, and the second portion 111 is provided with a terminal 117 for electrical connection with the cable C3.

[0183] In the waterproof panel shutter of this embodiment, a water stop line is formed on the indoor side of the shutter curtain 1 when in the fully closed position, so water is allowed to enter the bottom panel main body 4', and it is necessary to prevent water that has entered the bottom panel main body 4' from entering the indoor side through the penetration part or relay cable C2.

[0184] As shown in FIG. 32, the internal space of the insertion part (the space surrounded by the wall surface of the insertion part and the second surface of the abutting body) is filled with a caulking material 118 so as to surround the relay cable C2. A waterproofing treatment using a rubber packing 119 is applied between the inner surface of the lid part 113 and the indoor facing surface 41 around the through hole. The relay cable C2 is fixed to a liner 120 provided on the back surface of the surface material forming the indoor facing surface 41 by a screw (not shown) with the lid part 113 abutting against the indoor facing surface 41 via the rubber packing 119. The rubber packing 119 prevents water from entering the outdoor side through a gap between the penetration part formed on the indoor facing surface 41 of the bottom panel main body 4' and the lid part 113, and the caulking material 118 prevents water from entering the outdoor side along the relay cable C2. The first portion 110 and terminal 116 located on the indoor side of the relay cable C2, and the lid portion 113 of the relay cable holder 112 are accommodated inside a cover 121 that is attached to the indoor side visible surface 41 in an openable / closable or detachable manner, and the cable C1 extends to the outside through a hole formed in the cover 121 (see Figure 33).

[0185] [E] Airtight structure (smokeproof structure) and ridge structure (fireproof structure) The waterproof shutter according to this embodiment can be used as a so-called management panel shutter, and functions as a fireproof and smokeproof shutter in the normal closed state of the building opening. The panels 2, 3, and 4 constituting the shutter curtain 1 are formed of steel panels (assembled from steel plates made of steel or stainless steel, with a plate thickness of, for example, 1.5 mm or more), and the seat plate 6 and guide body 5 are also formed from steel plates (steel or stainless steel), improving fire resistance. When the shutter curtain 1 is in a fully closed position, a tucked structure is formed between the lower part of the upper panel and the upper part of the lower panel of the panels adjacent to each other vertically. In addition, in order to function as a fireproof and smokeproof shutter in the normal closed state, it is provided with an airtight structure for preventing smoke and flames from entering the indoor side from the outdoor side. In addition, the airtight structure according to this embodiment can also prevent smoke and flames from escaping from the indoor side to the outdoor side in the event of a fire.

[0186] [E-1] Airtight structure between panels of a shutter curtain in a fully closed position When the shutter curtain 1 is in a fully closed state, an airtight structure is formed between the lower end portion of the top panel 2 and the upper end portion of the panel 3, between the lower end portion of the panel 3 and the upper end portion of the panel 3, and between the lower end portion of the panel 3 and the upper end portion of the bottom panel 4. Since the configuration of the lower end portion of the top panel 2 is the same as the configuration of the lower end portion of the panel 3, and the configuration of the upper end portion of the bottom panel 4 is the same as the configuration of the upper end portion of the panel 3, the airtight structure between the panels of the shutter curtain 1 according to this embodiment will be described based on the airtight structure of the vertically adjacent panels 3 in the shutter curtain 1 in the fully closed position.

[0187] As shown in Figure 14, at the lower end portion of the panel 3, airtight members are provided continuously across the entire width of the panel, consisting of a shock-absorbing / airtight member 15, left and right end lower airtight members 18 which are in close contact with both longitudinal ends of the shock-absorbing / airtight member 15, and left and right end room outer airtight members 17 which are in close contact with the outdoor side portions of the left and right end lower airtight members 18.

[0188] 19, when the shutter curtain 1 is in a fully closed state, in a cross-sectional view of the widthwise middle portion of the panel 3, the outdoor-side rising piece 303 at the upper end portion of the lower panel 3 is close to the outdoor side of the lower outdoor-side visible surface 302 at the lower end portion of the upper panel 3 (the outdoor-side rising piece 303 is located at a step formed by the lower edge portion 301 and the lower outdoor-side visible surface 302), the outdoor-side lower surface 330 of the lower surface portion 33 at the lower end portion of the upper panel 3 is close to the outdoor-side upper surface 320 of the upper surface portion 32 at the upper end portion of the lower panel 3 (separated and not in contact in this embodiment), and the outdoor-side inclined surface 331 of the lower surface portion 33 at the lower end portion of the upper panel 3 is close to the outdoor-side inclined surface 321 of the upper surface portion 32 at the upper end portion of the lower panel 3 (separated and not in contact in this embodiment). In this state), the cushioning / airtight member 15 provided on the central horizontal surface 332 of the lower surface portion 33 at the lower end of the upper panel 3 abuts against the central horizontal surface 322 of the upper surface portion 32 at the upper end of the lower panel 3, but at both widthwise ends of the panel 3, the end lower airtight member 18 at the lower end of the upper panel 3 is in close contact with the outdoor-side upper surface 320 and the outdoor-side inclined surface 321 of the upper surface portion 32 at the upper end of the lower panel 3, and the left and right end room outer airtight members 17 are located outside the panel widthwise edges 3030 of the outdoor-side rising pieces 303 (see Figure 36), and the outer surfaces of the end room outer airtight members 17 are approximately flush with the main surface portion 300 of the outdoor-side visible surface 30 of the panel 3 and the outer surfaces of the outdoor-side rising pieces 303 (in this embodiment, they are located slightly toward the outdoor side) (see Figures 15 and 36).

[0189] [E-2] Airtight structure between the bottom panel body and the seat plate in a shutter curtain in the fully closed position When the shutter curtain 1 is in a fully closed state, an airtight structure is formed between the bottom panel main body 4' and the movable seat plate 6 in the bottom panel 4. In this embodiment, the airtight structure is formed in the outdoor part of the bottom panel 4 of the shutter curtain 1 in the fully closed position. As shown in FIG. 23, in the outdoor part of the movable seat plate 6, a groove is formed extending in the length direction of the movable seat plate 6 (width direction of the bottom panel 4) from the outdoor part of the bottom surface 60, the outdoor rising piece 61, and the outdoor facing surface 63, and an outdoor elastic water-stopping member 16α is fitted in the groove. When the shutter curtain 1 is in a fully closed position, the outdoor lower surface 430 of the panel main body 4' abuts against the upper surface of the outdoor elastic water-stopping member 16α, thereby forming an airtight structure over the entire width between the bottom panel main body 4' and the movable seat plate 6.

[0190] [E-3] Airtight structure of the bottom end of the shutter curtain in the fully closed position When the shutter curtain 1 is in a fully closed state, an airtight structure is formed between the lower end portion of the bottom panel 4 (in this embodiment, the movable seat plate 6) and the floor surface. An elastic water-stopping member 19 is provided across the entire width on the bottom surface 60 of the movable seat plate 6, and the elastic water-stopping member 19 abuts against the floor surface due to the weight of the shutter curtain 1, thereby also functioning as an airtight member (see FIG. 23).

[0191] [E-4] Airtight structure at both ends of the width of the shutter curtain in the fully closed position As shown in Figures 5 and 34, the widthwise end of the shutter curtain 1 (top panel 2, panel 3, bottom panel 4) in the fully closed position is received in the opening between the horizontal pressing member 82 on the outdoor side and the watertight rubber member 55 on the indoor side, and the outdoor side peripheral surface of the guide roller 11 at the tip of the support shaft 10 protruding from the widthwise end is in contact with or close to the guide member 53 provided on the bottom side of the guide body 5.

[0192] 5 and 34 to 36, a smoke blocking material 56 is provided along the height direction at the tip of the outdoor-side folded piece 500 of the guide body 5. The smoke blocking material 56 is adapted to be in continuous contact along the height direction with both end portions in the panel width direction (portions located outside the guide body 5) of the outdoor side surface of the shutter curtain 1 in the fully closed position. More specifically, the panel width direction both ends of the outdoor side surface of the shutter curtain 1 in the fully closed position are composed of the end room outside airtight member 17 attached to the main surface 200 and the lower outdoor side surface 202 of the outdoor side facing surface 20 of the top panel 2, the end room outside airtight member 17 attached to the main surface 300 and the lower outdoor side facing surface 302 of the outdoor side facing surface 30 of the panel 3, the outdoor side facing surface 40 of the bottom panel 4, the second part 1661 (Fig. 23) which is the exposed surface of both ends of the width direction of the outdoor side elastic water stop member 16α, the outdoor side rising piece 61 of the movable seat plate 6, and the outdoor side part of the end water stop member 191 of the elastic water stop member 19. In one embodiment, even when the shutter curtain 1 in the fully closed position is displaced toward the indoor side by horizontal pressure, the contact between the smoke blocking material 56 and both ends of the panel width direction of the outdoor side surface of the shutter curtain 1 is maintained (see Fig. 6).

[0193] An upper smoke blocking material 56' is provided in the lintel portion 130 above the opening across the width of the opening, and the upper smoke blocking material 56' is in contact with the outdoor facing surface 20 of the top panel 2, and both widthwise ends are in contact with the upper ends of the left and right smoke blocking materials 56. The lower ends of the left and right smoke blocking materials 56 are in contact with the floor surface FL. In this embodiment, in a plan view, the smoke blocking material 56 is formed by making a fireproof sheet into a bag shape, the base end side is fixed to the tip portion of the outdoor side folded piece 500, and the curved tip portion is in contact with both widthwise ends of the panel of the outdoor side portion of the shutter curtain 1, but the specific configuration of the smoke blocking material 56 is not limited.

[0194] [E-5] Airtight structure of shutter curtain in fully closed position (other embodiment 1) With reference to Fig. 38, another embodiment of the airtight structure of the shutter curtain in the fully closed position will be described based on the panel 3. In this embodiment, an outdoor airtight member 17α is provided along the lower edge 301 at the upper end of the lower outdoor facing surface (step facing surface) 302 of the panel 3 over the entire width of the panel. When the shutter curtain is fully closed, the upper end of the outdoor rising piece 303 of the lower panel 3 is in close contact with the outdoor airtight member 17α at the lower end of the upper panel 3, and the outdoor gap between the lower end of the upper panel 3 and the upper end of the lower panel 3 is blocked over the entire width of the panel. The outdoor part of the outdoor airtight member 17α is approximately flush with the outdoor facing surface (main surface portion 300) and the outdoor rising piece 303 of the panel 3. Both widthwise end parts of the outdoor airtight member 17α are in contact with the left and right smoke blocking materials 56. In this embodiment, the outdoor side airtight member 17α and the buffer / airtight member 15 are independent of each other.

[0195] [E-6] Airtight structure of shutter curtain in fully closed position (other embodiment 2) With reference to Fig. 39, a further embodiment of the airtight structure of the shutter curtain in the fully closed position will be described based on the panel 3. In this embodiment, no stepped surface is formed below the outdoor-side visible surface 30 of the panel 3. A flat outdoor-side airtight member 17β is provided over the entire width of the panel on either the outdoor-side horizontal surface at the lower end of the upper panel 3 or the outdoor-side horizontal surface at the upper end of the lower panel 3, and when the shutter curtain is fully closed, the outdoor-side airtight member 17β is pressed between the outdoor-side horizontal surface at the lower end of the upper panel 3 and the outdoor-side horizontal surface at the upper end of the lower panel 3, so that the outdoor-side gap between the lower end of the upper panel 3 and the upper end of the lower panel 3 is blocked over the entire width of the panel. The outdoor-side portion of the outdoor-side airtight member 17β is substantially flush with the outdoor-side visible surface 30 of the panel 3, and both widthwise end portions of the outdoor-side airtight member 17β are in contact with the left and right smoke blocking materials 56. In this embodiment, the outdoor side airtight member 17α and the buffer / airtight member 15 are independent of each other.

[0196] [E-7] Interleaved structure between panels in a shutter curtain in the fully closed position In this embodiment, in the panels adjacent to the top and bottom of the shutter curtain 1 in the fully closed position, a water-stopping structure is formed between the indoor side part of the lower part of the upper panel and the indoor side part of the upper part of the lower panel, and a nested structure is formed between the lower part of the upper panel and the upper part of the lower panel, located on the outdoor side of the water-stopping structure. The nested structure between the panels adjacent to the top and bottom of the shutter curtain 1 according to this embodiment will be explained based on the fit of the adjacent panels 3 adjacent to the top and bottom of the shutter curtain 1 in the fully closed position. The underside portion 33 of the upper panel 3 comprises an outdoor-side lower surface (outdoor-side horizontal surface) 330, a trapezoidal portion in a side view consisting of an outdoor-side inclined surface 331, a central horizontal surface 332 and an indoor-side inclined surface 333, and an indoor-side area (indoor-side vertical surface 334, indoor-side lower surface 335), and the upper side portion 32 of the lower panel 3 comprises an outdoor-side upper surface (outdoor-side horizontal surface) 320, a trapezoidal portion in a side view consisting of an outdoor-side inclined surface 321, a central horizontal plane 322 and an indoor-side inclined surface 323, and an indoor-side area (indoor-side vertical surface 324, indoor-side lower surface 325). When the shutter curtain is in the fully closed position, the lower end portion of the upper panel 3 and the upper end portion of the lower panel 3 form a nested structure by fitting the trapezoidal portion (outdoor-side inclined surface 331, central horizontal surface 332, indoor-side inclined surface 333) of the lower surface portion 33 of the upper panel 3 with the trapezoidal portion (outdoor-side inclined surface 321, central horizontal surface 322, indoor-side inclined surface 323) of the upper surface portion 32 of the lower panel 3. In this embodiment, the nested structure is further formed by the outdoor-side rising piece 303 of the lower panel 3 closely facing the lower outdoor-side visible surface 302 of the upper panel 3. In this embodiment, the fire and smoke prevention performance is improved by the synergistic effect of the airtight structure and the nested structure.

[0197] [E-8] Function as a fire shutter The waterproof shutter according to this embodiment is an electric shutter, and in normal operation, it is electrically lowered to close the opening. In the fully closed state of the opening, as described above, an airtight structure (smoke-blocking structure) is formed in the outdoor portion, and a hook-and-loop structure (fire-resistant structure) advantageous for fire prevention is formed between the panels adjacent vertically. In the fully closed state of the opening (non-compressed state), the vertical compression mechanism compresses the shutter curtain 1 in the fully closed position vertically, and the horizontal compression mechanism compresses the shutter curtain 1 in the fully closed position in the vertical compression state horizontally, so that the shutter curtain 1 in the fully closed position is in a vertical and horizontal compression state. Even in this state, the airtight structure (smoke-blocking structure) is maintained (see FIG. 6), and the hook-and-loop structure (fire-resistant structure) is maintained (see FIG. 20).

[0198] The waterproof shutter according to this embodiment is provided with a self-weight lowering mechanism for lowering the shutter curtain 1 in a fully open state under its own weight in the event of a fire or the like. More specifically, as shown in FIG. 40, the waterproof shutter is provided with an automatic closing device that is actuated by the input of a fire detection signal, and an operating mechanism that releases and returns the brake of the opening / closing device M, and by the operation of the automatic closing mechanism, the operating mechanism takes the brake release position, releases the brake, and the shutter curtain is lowered under its own weight, and the shutter curtain is lowered to the fully closed position and stops in the fully closed position. When an obstacle hits the seat plate 6 at the lower end of the shutter curtain 1 during the self-weight lowering, an obstacle detection signal is transmitted to the operating mechanism, and in response to the input of the obstacle detection signal, the operating mechanism takes the brake return position, the brake is returned, and the shutter curtain is stopped during the self-weight lowering. When the obstacle is removed, the input of the obstacle detection signal disappears, and the operating mechanism takes the brake release position again, releases the brake, and the shutter curtain is lowered again under its own weight, and the shutter curtain is lowered to the fully closed position and stops in the fully closed position.

[0199] The following describes the compression operation after the shutter curtain has reached the fully closed position due to its own weight. In the first mode, the system determines whether the fully closed shutter curtain has reached the fully closed position due to its own weight or due to electrical descent, depending on the presence or absence of a fire detection signal. If the fire detection signal is "present", it is determined that the shutter curtain has reached the fully closed position due to its own weight, and the transmission of the compression signal from the compression button is disabled, restricting the compression operation.

[0200] In the second mode, the compression operation is possible regardless of whether the shutter curtain in the fully closed position is lowered by its own weight or by electrical power. When a vertical compression signal is sent from the compression button to the vertical compression mechanism, the vertical compression mechanism executes vertical compression of the shutter curtain in the fully closed position, and when a horizontal compression signal is sent from the compression button to the horizontal compression mechanism, the horizontal compression mechanism executes vertical compression of the shutter curtain in the fully closed position. [Explanation of symbols]

[0201] 1. Shutter Curtain 2 Top Panel 20 Outdoor front view 200 Main surface 202 Lower outdoor side view (step view) 21 Indoor front view 22 Top part 221 Compressed recess (compressed part) 23 Bottom part 230 Outdoor side bottom surface 231 Outdoor slope 232 Central horizontal plane 233 Indoor inclined surface 234 Indoor vertical surface 235 Indoor side underside (pressed part) 25´ Upper horizontal brace 25 Intermediate horizontal reinforcement 26 Lower horizontal reinforcement 27 First vertical reinforcement 28 Second vertical reinforcement 29 Third vertical reinforcement 3 Middle Panel (Panel) 30 Outdoor front view 300 Main surface 302 Lower outdoor side view (step view) 303 Outdoor side rising piece (projecting piece) 31 Indoor front view 310 Indoor side rising piece (outer end piece of groove, protruding piece) 32 Top part 320 Outdoor side top surface (outdoor side horizontal surface) 321 Outdoor slope 322 Central horizontal plane 323 Indoor inclined surface 324 Indoor vertical surface (indoor facing surface, staggered indoor facing surface) 3240 1st part (groove) 3241 Part 2 325 Indoor side underside (bottom of groove) 33 Bottom part 330 Outdoor side lower surface (outdoor side horizontal surface) 331 Outdoor slope 332 Central horizontal plane 333 Indoor inclined surface 334 Indoor vertical surface 335 Indoor side underside (pressed part) 35 Intermediate horizontal reinforcement 36 Lower horizontal reinforcement 37 First vertical reinforcement 38 Second vertical reinforcement 39 Third vertical reinforcement 4 Bottom Panel 4´ Bottom panel body 40 Outdoor front view 400 Outdoor side rising piece (projecting piece) 41 Indoor front view 410 Indoor side rising piece (outer side of groove, protruding piece) 42 Top part 420 Outdoor side top surface 421 Outdoor slope 422 Central horizontal plane 423 Indoor inclined surface 424 Indoor vertical surface (indoor facing surface, stepped indoor facing surface) 425 Indoor side underside (bottom of groove) 43 Bottom part 430 Outdoor side bottom (bottom of panel body) 431 Indoor side underside (underside of panel body) 47 First vertical reinforcement 48 Second vertical reinforcement 45 Intermediate horizontal reinforcement 46 Lower horizontal reinforcement 5 Guide body 55 Watertight rubber components (elastic components) 56 Smoke blocking material 56´ Upper smoke barrier 6 Movable seat plate 60 Bottom surface (the indoor side is the bottom of the groove) 61 Outdoor side rising piece (outdoor part of seat board) 62 Indoor side rising piece (outer end piece of groove, protruding piece) 620 Tip edge (upper edge) 63 Outdoor front view 64 Indoor facing surface (inside facing surface) 640 1st part (groove) 641 Part 2 7 Vertical compression mechanism 8 Horizontal compression mechanism 15 Buffer / airtight member (first airtight member) 16 Elastic water-stopping material 16A Hard elastic part 16B Soft elastic part 160 Bottom 161 Inside facing surface (inside facing part) 1610 Projection 162 Outside sight section 1620 Projection piece 163 Connection surface (first connection surface) 1630 1st horizontal plane 1631 1st slope 164 Abutted surface 165 Inside view 166 Outer marking surface 1660 Part 1 1660´ First section crushed 1661 Part 2 1661´ The second part in the expanded state 167 Connection surface (second connection surface) 1670 2nd horizontal plane 1671 2nd slope 16α Elastic water-stopping material (elastic airtight material) 16β Elastic water-stopping material 17 End room outer airtight member (second airtight member) 18 Lower end airtight member (third airtight member) 19 Elastic water-stopping material 190 Intermediate water-stopping material 191 End water-stopping member (lower end airtight member) SW Detection switch (obstacle detection switch) CR Cord Reel C1 Cord Reel Cable C2 Relay Cable C3 Cable extending from the detection switch 112 Relay cable holder 113 Lid 1130 Hole (second insertion part) 114 Insertion section 118 Caulking material (second waterproofing treatment) 119 Rubber packing (first waterproofing treatment) 121 Cover

Claims

1. A shutter curtain composed of a plurality of panels, Left and right guide bodies for receiving the widthwise end portions of the shutter curtain, Vertical pressing means for vertically pressing the shutter curtain in the fully closed position, In a waterproof shutter provided with An elastic waterstop member extending in the panel width direction is provided on either the indoor side portion of the lower end portion of the upper panel or the indoor side portion of the upper end portion of the lower panel among vertically adjacent panels, and the other is a pressing portion for pressing the elastic waterstop member in the vertical pressing position, An airtight member is provided on at least one of the lower end portion of the upper panel and the upper end portion of the lower panel of vertically adjacent panels, located on the outdoor side of the elastic waterstop member, and closing the gap between the lower end portion of the upper panel and the upper end portion of the lower panel in the panel width direction when the shutter curtain is in the fully closed position, In the vertically compressed state of the shutter curtain, when the pressing portion presses against the elastic waterstop member, a waterstop structure is formed across the indoor side portion of the vertically adjacent panels in the panel width direction, A waterproof shutter.

2. The elastic waterstop member is provided on the indoor side portion of the upper end portion of the lower panel, The pressing portion is the indoor side portion of the lower end portion of the upper panel, and in the vertical pressing position, the indoor side portion of the lower end portion of the upper panel is in close contact with the upper surface of the elastic waterstop member, The waterproof shutter according to Claim 1.

3. The elastic waterstop member extends in the panel width direction and is fitted into a groove portion integrally formed with the panel, The elastic waterstop member consists of a first portion located within the groove portion and a second portion located outside the groove portion, The waterproof shutter according to Claim 2.

4. The outer facing surface of the second portion of the elastic waterstop member is substantially flush with the indoor facing surface of the panel in the non-vertically pressed position, and bulges inwardly of the indoor facing surface of the panel in the vertically pressed position, The waterproof shutter according to Claim 3.

5. The waterproof shutter is provided with horizontal pressing means for horizontally pressing the shutter curtain in the fully closed position from the outdoor side to the indoor side, The guide body is provided with a watertight rubber member against which the indoor facing surface of the shutter curtain presses in the height direction during horizontal pressing, During horizontal pressing, the outer facing surface of the second portion presses against the watertight rubber member, The waterproof shutter according to any one of claims 3 and 4.

6. One of the lower end portion of the upper panel and the upper end portion of the lower panel is a convex portion, and the other is a concave portion. The airtight member includes a portion that is pressed between the convex portion and the concave portion when the shutter curtain is in the fully closed position. The waterproof shutter according to any one of claims 1 to 5.

7. At least both end portions in the width direction of the airtight member are end airtight portions that form a portion of the outdoor visible surface of the shutter curtain. A smoke shielding material that contacts the outdoor visible surface of the shutter curtain in the fully closed position is provided over the height direction of the guide body at the outdoor side portion of the guide body. At the outdoor side portion of the shutter curtain in the fully closed position, an end airtight structure is formed by the smoke shielding material contacting the outdoor visible surface of the shutter curtain and the end airtight portion. The waterproof shutter according to any one of claims 1 to 6.

8. The width direction end portion of the shutter curtain is received between the horizontal pressing member of the horizontal pressing means and the watertight rubber member in the guide body. In a state where the shutter curtain in the fully closed position is displaced indoors by the horizontal pressing member, the end airtight structure is maintained. A water stop line is formed from the water stop structure and the watertight rubber member at the indoor side portion of the shutter curtain in the fully closed position. The waterproof shutter according to claim 7 (limited to the dependent claims of claim 5).

Images