Waterproof shutter

Abstract

To provide a waterproof shutter which includes fireproof and smokeproof performance.SOLUTION: In a waterproof shutter including a shutter curtain 1 constituted by a plurality of panels 2, 3, 4, in panels adjacent to each other vertically of the shutter curtain 1 in a fully closed posture, a water cut-off structure is formed between an indoor side portion of a lower side portion of an upper side panel and an indoor side portion of an upper side portion of a lower side panel. Between the lower side portion of the upper side panel and the upper side portion of the lower side panel, a shiplap structure is formed positioned on the outdoor side of the water cut-off structure.SELECTED DRAWING: Figure 19

Description

Technical Field

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

Background Art

[0002] In recent years, guerrilla heavy rains due to abnormal weather have occurred frequently, and in urban areas, rainwater inundation accidents have occurred in subway stations and building basements. There are cases where it is desired to install at the entrance of buildings or the like in an emergency to prevent external water from inundating into the building. Also, there are cases where it is desired to close the building opening in a water-stopped state to prevent inundation inside, not only during guerrilla heavy rains.

[0003] As exemplified in Patent Document 1, a waterproof shutter for closing a building opening in a water-stopped state has been proposed. There are cases where it is desired to make such a waterproof shutter function as a fire and smoke shutter. For example, when using the waterproof shutter as a panel shutter for combined management for normal opening and closing of a building opening, it is desired to have fire and smoke prevention performance in the normal fully closed state of the opening. The shutter disclosed in Patent Document 1 does not satisfy the requirements as fire prevention, and the water-stopping structure disclosed in Patent Document 1 cannot be adopted as it is.

Patent Document 1

Disclosure of the Invention

Problems to be Solved by the Invention

[0004] An object of the present invention is to provide a waterproof shutter having fire prevention performance.

Means for Solving the Problems

[0005] The technical means adopted by the present invention is a shutter curtain composed of a plurality of steel panels, left and right guide bodies for receiving the widthwise end portions of the shutter curtain, obstacle detection means, In a waterproof panel shutter having the following, In the panels adjacent above and below the shutter curtain in the fully closed position, a water stop structure is formed between the indoor side portion of the lower part of the upper panel and the indoor side portion of the upper part of the lower panel. An eavesdrop structure is formed on the outdoor side of the water stop structure between the lower part of the upper panel and the upper part of the lower panel. It is a waterproof shutter. In one aspect, the waterproof panel shutter is an electric shutter. The obstacle detection means is not limited to the type provided on the seat plate at the lower end of the shutter curtain. For example, a type using a photoelectric sensor provided in the lower part below the opening is also included.

[0006] In one aspect, the lower part of the upper panel of the panels adjacent above and below has a concave part, and the upper part of the lower panel has a convex part. The eavesdrop structure is formed by fitting the concave part and the convex part together. In one aspect, the lower part includes an outdoor horizontal plane, an outdoor inclined plane, a side view pedestal-shaped part composed of a central horizontal plane and an indoor inclined plane, and an indoor side part. The upper part includes an outdoor horizontal plane, an outdoor inclined plane, a side view pedestal-shaped part composed of a central horizontal plane and an indoor inclined plane, and an indoor side part. The eavesdrop structure is formed by fitting the pedestal-shaped parts together. An elastic water stop member is provided across the entire width of the panel on at least one of the indoor side part of the lower part and the indoor side part of the upper part.

[0007] In one aspect, the waterproof shutter includes vertical pressing means for making the shutter curtain in the fully closed position in a vertically compressed state. In one aspect, the waterproof shutter includes horizontal pressing means for making the shutter curtain in the vertically compressed state in a horizontally compressed state. In one aspect, an elastic waterstop member is provided across the entire width of the panel on at least one of the indoor side portions of the lower part of the upper panel and the indoor side portions of the upper part of the lower panel. The uneven structure allows the elastic waterstop member to be pressed by the vertical pressing means. In one aspect, at least one of the lower part of the upper panel and the upper part of the lower panel that form the uneven structure is provided with a buffer material extending in the panel width direction. When vertically pressed by the vertical pressing means, the buffer material and the elastic waterstop member are simultaneously pressed.

[0008] In one aspect, a fireproof structure is formed by the uneven structure formed between adjacent steel panels vertically when the shutter curtain is in the fully closed position and non-pressed state. When the shutter curtain is in the fully closed position and pressed state, the fireproof structure is maintained.

[0009] In one aspect, a smoke barrier structure is formed on the outdoor side portion of the shutter curtain when the shutter curtain is in the fully closed position and non-pressed state. When the shutter curtain is in the fully closed position and pressed state, the smoke barrier structure is maintained. In one aspect, the smoke barrier structure is composed of an airtight member and a smoke barrier material. More specifically, on at least one of the lower end portion of the upper panel and the upper end portion of the lower panel of the panels adjacent vertically, when the shutter curtain is in the fully closed position, an airtight member is provided to close the gap between the lower end portion of the upper panel and the upper end portion of the lower panel across the panel width direction. At least both end portions in the width direction of the airtight member are end airtight portions forming a part of the outdoor side visible surface of the shutter curtain. On the outdoor side portion of the guide body, a smoke barrier material that contacts the outdoor side visible surface of the shutter curtain in the fully closed position is provided across the height direction of the guide body. In one aspect, the bottom panel of the shutter curtain comprises a panel body and a seat plate provided at the lower end of the panel body. On at least one of the panel body and the seat plate, an elastic airtight member (16α) extending in the panel width direction is provided on the outdoor side of the portion of the lower surface of the panel body facing the seat plate. When the shutter curtain is in the fully closed position, the elastic airtight member closes the gap between the opposing portions. The outdoor side portion of the seat plate and the elastic airtight member form a part of the outdoor side visible surface of the shutter curtain. The lower end of the smoke barrier material is in contact with the outdoor side portion of the seat plate and the elastic airtight member. In one aspect, on the outdoor side portion of the seat plate at the lower end of the shutter curtain, a lower end airtight member (19) is provided to close the gap between the lower surface of the seat plate and the floor surface in the panel width direction when the shutter curtain is in the fully closed position. The outdoor side portion of the seat plate and both end portions (191) in the width direction of the lower end airtight member form a part of the outdoor side visible surface of the shutter curtain. The lower end of the smoke barrier material reaches the floor surface and is in contact with the outdoor side portion of the seat plate and both end portions (191) in the width direction of the lower end airtight member. In one aspect, an upper smoke barrier material that contacts the entire width of the upper end portion of the outdoor side visible surface of the shutter curtain is provided on the outdoor side above the opening. Both end portions in the width direction of the upper smoke barrier material are in contact with the smoke barrier material.

[0010] In one aspect, a movable seat plate constituting an obstacle detection means is provided at the lower end of the shutter curtain. In one aspect, the movable seat plate is made of steel, but for example, it may be a fireproof specification formed by covering a seat plate body made of aluminum profile with a steel plate. When the waterproof shutter is used for normal opening and closing of the building opening as a panel shutter for combined management, especially when used as a fire shutter, it is required to be provided with obstacle detection means on the seat plate at the lower end of the shutter curtain. In one aspect, the shutter curtain can descend by its own weight due to the operation of the automatic closing device, in response to the input of an obstacle detection signal by the obstacle detection means, the descent of the shutter curtain during electric descent or descent by its own weight is stopped, in response to the disappearance of the obstacle detection signal by the obstacle detection means, the shutter curtain that has stopped during descent by its own weight descends again by its own weight. In one aspect, in the shutter curtain that has descended by its own weight and is in the fully closed position, a vertical pressing operation is possible. In one aspect, in the shutter curtain that has descended by its own weight and is in the fully closed position, the vertical pressing operation is restricted.

[0011] In one aspect, the water stop line of the waterproof shutter is located at the indoor side part of the shutter curtain in the fully closed position, and water intrusion into the panel interior is allowed, the bottom panel of the shutter curtain is provided with an obstacle detection switch, and the obstacle detection signal is transmitted to the outside of the bottom panel through a relay body that penetrates the surface material of the bottom panel from inside the bottom panel. The insertion part of the relay body on the indoor side facing surface of the bottom panel is waterproofed. In the obstacle detection means provided on the seat plate, for example, in the case of a wired type, it is necessary to connect the detection switch in the bottom panel and the cord of the cord reel outside the panel to transmit the obstacle detection signal to the control unit (control panel). At this time, a hole for inserting the cord is formed on the indoor side facing surface of the bottom panel. However, when the water stop line of the waterproof shutter is located at the indoor side part of the shutter curtain in the fully closed position and water intrusion into the panel interior is allowed, if no countermeasures are taken, in the water stop structure formed by the shutter curtain in the fully closed position, there is a risk that water inside the panel will further enter the indoor side through the hole for inserting the cable or the cable. In this aspect, in a waterproof shutter provided with an obstacle detection device, by performing waterproof treatment on the insertion portion of the relay body in the surface material of the bottom panel (for example, the surface material forming the indoor side facing surface), the waterproof performance of the bottom panel can be improved.

[0012] In one aspect, the relay body is a relay cable, and the terminal located inside the bottom panel of the relay cable is adapted to receive an obstacle detection signal from the obstacle detection switch, and a cable extending along the outdoor side facing surface of the shutter curtain from a cord reel is electrically connected to the terminal located outside the bottom panel of the relay cable. Note that the obstacle detection signal may be transmitted as a wireless signal from the relay body. In one aspect, the relay cable includes a relay cable holder having an insertion portion and a lid portion. The insertion portion of the relay body is formed in the surface material of the bottom panel, and includes a first insertion portion into which the insertion portion of the relay cable is fitted, and a second insertion portion formed in the lid portion and the insertion portion for inserting the relay cable. By performing a first waterproof treatment on the gap between the lid portion and the surface material of the bottom panel, the first insertion portion is blocked. By performing a second waterproof treatment on the gap between the second insertion portion and the relay cable, the second insertion portion is blocked. In one aspect, the insertion portion of the relay body is provided in the surface material forming the indoor side facing surface of the bottom panel. In one aspect, the first waterproof treatment is an elastic waterstop member (for example, a rubber packing) located between the lid portion and the opposing surface of the indoor side facing surface of the bottom panel, and the lid portion of the relay cable holder is fixed to the indoor side facing surface of the bottom panel, for example, by screws, while pressing the elastic waterstop member between the lid portion and the opposing surface of the indoor side facing surface of the bottom panel, thereby forming a waterproof structure between the lid portion and the indoor side facing surface of the bottom panel. In one aspect, the second waterproof treatment is a caulking material filled in the gap between the insertion portion and the relay cable. In one aspect, the second waterproof treatment includes an elastic bush (for example, a rubber bush) that passes through the relay cable and closes the insertion portion formed in the lid portion from the inside, and a caulking material filled in the gap between the insertion portion formed in the insertion portion and the relay cable, adjacent to the elastic bush. In one aspect, a cover is provided on the surface material of the bottom panel so as to cover a portion of the relay cable located outside the bottom panel.

Advantages of the Invention

[0013] According to the present invention, a shutter having both a fireproof function and a waterproof function can be provided.

Brief Description of the Drawings

[0014]

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Embodiments for Carrying Out the Invention

[0015] [A] Configuration of the Panel Shutter The waterproof shutter according to this embodiment is composed of a panel shutter and has the 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 formed by connecting a top panel 2 (which may be abbreviated as "panel 2"), a plurality of intermediate panels 3 (hereinafter referred to as "panel 3"), and a bottom panel 4 (which may be abbreviated as "panel 4") in the panel height direction. Also, in this specification, it should be noted that when referring to a "panel", it basically may include the top panel 2, panel 3, and bottom panel 4. In this embodiment, the bottom panel 4 is composed of a bottom panel main body 4' (which may also be abbreviated as "panel main body 4'" or "main body 4'") and a movable seat plate 6 (which may be abbreviated as "seat plate 6"). The waterproof shutter according to this embodiment has fire and smoke prevention performance in addition to waterproof performance, and each panel 2, 3, 4 is a steel panel formed of steel with excellent heat resistance and fire resistance, which is different from the conventional aluminum panels. The detailed structure of each panel 2, 3, 4, the waterproof structure, and the fire and smoke prevention structure of the waterproof shutter according to this embodiment will be described in detail later. In this specification, it should be noted that the terms "outdoor side" and "indoor side" are also used to represent the relative positions of the parts of the members in addition to being located on the "outdoor side" and "indoor side" with the opening opened and closed by the shutter curtain 1 in between.

[0016] The basic structure of the panel shutter will be described. At both ends in the width direction of each of the panels 2, 3, 4 constituting the shutter curtain 1, a support shaft 10 provided with a guide roller 11 protrudes (see FIGS. 5 and 6), and each of the panels 2, 3, 4 is connected to a chain (not shown) via the support shaft 10 and is suspended to form the shutter curtain 1. In a panel shutter, the configuration of suspending a plurality of panels by a chain is well known to those skilled in the art, so a detailed description will be omitted.

[0017] On both ends in the width direction of the building opening, left and right guide bodies 5 are erected to receive and guide both end portions in the width direction of the shutter curtain 1 in a vertical posture. As shown in FIGS. 5 and 6, the guide body 5 is a structure formed in a U-shaped cross-section from the outdoor-side first side wall 50 and the indoor-side second side wall 51 that face each other with a gap therebetween and the bottom wall 52, and extends in the opening height direction. On the tip sides of the outdoor-side first side wall 50 and the indoor-side second side wall 51, an outdoor-side bent piece 500 and an indoor-side bent piece 510 are formed so as to face each other. The width-direction end portions of the shutter curtain 1 (top panel 2, panel 3, bottom panel 4) are received in the opening groove between the tips of the outdoor-side bent piece 500 and the indoor-side bent piece 510. On the bottom wall 52 of the guide body 5, a guide member 53 is provided, which is a long member extending vertically in the height direction and contacts and guides the outdoor-side peripheral surface of the guide roller 11. On the outside of the outdoor-side bent piece 500 and the indoor-side bent piece 510 on the tip sides of the outdoor-side first side wall 50 and the indoor-side second side wall 51, long fins 54 (for example, made of nylon) extending in the height direction are respectively formed. The upper end of the guide member 53 extends into the storage space above the opening and is provided with an upper extending portion 5' (see FIG. 2). The upper extending portion 5' 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 for winding a chain is provided at a position substantially at the upper end of the upper extending portion 5'. By rotating the sprocket 12 by an opening / closing machine M to lift or pay out the chain, the shutter curtain 1 is lifted or lowered 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. In the storage space, a storage rail 13 is provided, which extends gently downward in an inclined shape from the front (outdoor side) toward the rear (indoor side). By lifting the chain, the panels 2 and 3 are sequentially fed to the storage rail 13 via the sprocket 12, and while the guide roller 11 is guided by the storage rail 13, they are sequentially sent to the rear of the storage space and held and stored in a state where the panels 2, 3, and 4 hang 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 an operation from an opening / closing switch (not shown) in the switch boxes SB1 to SB3. In the fully closed state of the opening, when the release switch (not shown) is pressed and the opening / closing machine M rotates the sprocket 12 in the chain hoisting direction, the shutter curtain 1 in the vertical posture in the fully closed state rises as the chain rises, with both end portions in the width direction guided by the vertical guide body 5, and is sequentially transferred from the top panel 2 to the storage rail 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] In the fully open state of the opening, when the closing switch (not shown) is pressed and the opening / closing machine M rotates the sprocket 12 in the chain payout direction, the panels 2 and 3 stored in parallel are sequentially pulled out from the rear (indoorside) to the front (outdoorside) of the storage space toward the sprocket 12 side with the guide rollers 11 at both end portions in the width direction guided by the storage rail 13. When passing through the sprocket 12, they descend while being guided by the guide body 5 in a vertically perpendicular posture to each other in the height direction, and the opening is closed.

[0021] When the shutter curtain 1 descends, in any two adjacent panels (the top panel 2 and the panel 3, the panels 3, the panel 3 and the bottom panel 4) adjacent to each other vertically, the upper end portion of the lower panel and the lower end portion of the upper panel are in a separated state (see the left figure in Fig. 4 and the left figure in Fig. 21). After the lower end of the bottom panel 4 touches down when the shutter curtain descends, when the shutter curtain 1 continues to descend a predetermined distance, in any two adjacent panels adjacent to each other vertically, the upper end portion of the lower panel and the lower end portion of the upper panel at least partially contact each other to be in the fully closed state (see the central figure 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'. A first obstacle detection means is constituted by the movable seat plate 6 and a detection switch SW provided at the lower end portion of the bottom panel main body 4'. When the movable seat plate 6 at the lower end of the bottom panel 4 abuts on a floor or an obstacle and the movable seat plate 6 moves upward relatively by a predetermined amount, the detection switch SW is turned on, and an obstacle detection signal is transmitted to the control unit of the opening / closing machine M via a cord reel CR (wired type), so that the shutter curtain 1 during descent stops. The upper limit and the lower limit of the shutter curtain 1 are preset in the control unit. When an obstacle detection signal is received above the lower limit, it is determined that an obstacle has been detected during the descent of the shutter curtain. The descending shutter curtain 1 is controlled to stop for, for example, 1 second and then reverse and rise for 1.5 seconds. When an obstacle detection signal is received below the lower limit, it is determined that the shutter curtain is in the fully closed position (resting on the floor surface FL), and the descent of the shutter curtain 1 is stopped without performing reverse rising. Also, the transmission of the obstacle detection signal is not limited to the wired type and may be wireless (for example, wirelessly transmitted by radio waves).

[0023] A photoelectric sensor 14, which is exemplified as a second obstacle detection means, is provided at a predetermined height from the floor surface at a lower portion of the opening. In the illustrated aspect, four photoelectric sensors 14 are provided at positions 150 mm and 500 mm above the floor surface on the outdoor side and the indoor side, respectively. The height positions of the photoelectric sensors 14 are for illustration only, and the height positions are not limited. In this embodiment, when an obstacle is detected during the descent of the shutter curtain, the descending shutter curtain stops for, for example, 1 second and then reverses and rises for 1.5 seconds.

[0024] While the basic configuration of the panel shutter has been described with reference to the drawings, the basic configuration of the panel shutter is well-known to those skilled in the art, and further detailed description will be omitted. Also, regarding the panel shutter, there are numerous variations and improvements known to those skilled in the art, and it should be noted that the configuration of the panel shutter applicable to the waterproof shutter according to the present invention is not limited to the illustrated embodiments.

[0025] [B] Configuration of the Waterproof Shutter The panel shutter according to the present embodiment functions as a waterproof shutter by providing a water-stop structure to the shutter curtain 1 in the fully closed state. In the present embodiment, the means for making the panel shutter in the fully closed state a water-stop state includes 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 integrally compresses the shutter curtain 1 compressed vertically by the vertical compression mechanism 7 horizontally toward the indoor side. Below, the configuration and operation of the vertical compression mechanism 7 and the horizontal compression mechanism 8 will be described, but for further details of the configuration of the waterproof shutter, Patent Document 1 can be referred to.

[0026] [B-1] Vertical Compression Mechanism As shown in FIG. 1, a plurality of vertical compression mechanisms 7 are provided across the opening width direction in the storage space above the opening. As shown in FIGS. 3 and 4, the vertical compression mechanism 7 includes a power cylinder 70 exemplified as an actuator disposed in the storage space above the opening, and a pressing portion (composed of a link mechanism) 72 provided at the tip of the piston rod 71 of the power cylinder 70 and abutting against and pressing the upper end of the topmost panel 2 in the fully closed state. In the fully closed state of the opening, by lowering the piston rod 71 and bringing the pressing portion 72 into contact with and pressing downward against the upper end of the topmost top panel 2, the shutter curtain 1 in the fully closed state is vertically compressed downward.

[0027] When the shutter curtain 1 in the fully closed state is in the vertically compressed state, an elastic waterstop member (in this embodiment, the elastic waterstop member 16) that extends across 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) above and below, and a waterstop structure is formed. Between the panel body 4' of the bottom panel 4 and the movable seat plate 6, an elastic waterstop member (in this embodiment, the indoor-side elastic waterstop member 16β) that extends across the entire width of the panel is pressed, and a waterstop structure is formed. Between the movable seat plate 6 and the floor surface FL, an elastic waterstop member (in this embodiment, the elastic waterstop member 19) that extends across the entire width of the panel is pressed, and a waterstop structure is formed.

[0028] As shown in FIG. 2, the vertical compression mechanism 7 is provided offset to the outdoor side with respect to the lifting path of each panel so as not to interfere with the lifting of each panel in the storage space above the opening. Therefore, in order to press the upper end of the top panel 2 in the fully closed state, the piston rod 71 of the power cylinder 70 protrudes obliquely downward, but a pressing force acts in the vertical direction on the upper end of the top panel 2 by the pressing portion 72 composed of a link mechanism.

[0029] As shown in FIGS. 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 at the center in the opening width direction, and vertical compression mechanisms 7 are provided at positions closer to the left and right guide bodies 5, respectively. The distance between the central vertical compression mechanism 7 and the left vertical compression mechanism 7 is the same as the distance 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 according to the width dimension (opening width dimension) of the shutter curtain 1 (panels 2, 3, 4), etc.

[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 not operating, 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 operates and the piston rod 71 protrudes to a predetermined compression position, the first limit switch becomes non-contact, and the movable part comes into 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 during the vertical compression operation or the vertical compression release operation; when the second limit switch is ON (the first limit switch is OFF), it is detected that it is in a vertical compression state. In this embodiment, when the first limit switch changes from OFF to ON, it is the time when the vertical compression mechanism 7 releases compression, and when the second limit switch changes from OFF to ON, it is the time when the vertical compression mechanism 7 completes compression.

[0031] [B―2] Horizontal compression mechanism As shown in Fig. 1, horizontal pressing mechanisms 8 are provided at the left and right ends in the opening width direction in the storage space above the opening. Similar to the vertical pressing mechanism 7, the horizontal pressing mechanisms 8 are provided so as to be biased to the outdoor side with respect to the lifting paths of the panels 2, 3, and 4 so as not to interfere with the lifting of the panels 2, 3, and 4 in the storage space above the opening. As shown in Fig. 1, the horizontal pressing mechanism 8 includes a power cylinder 80 exemplified as an actuator disposed in the storage space above the opening, and a horizontal pressing member 82 (see Figs. 5 and 6) that operates in conjunction with the vertical movement of the piston rod 81 of the power cylinder 80. The horizontal pressing member 82 of the horizontal pressing mechanism 8 is a long member having a rectangular cross-section and extending in the height direction, and is provided on the inner surface of the distal end side of the first side wall 50 on the outdoor side of the guide body 5. A watertight rubber member 55, which is a long member extending in the height direction, is provided on the inner surface of the distal end side of the second side wall 51 on the indoor side. By pressing both end portions in the width direction of the indoor side surface portion of the shutter curtain 1 in the fully closed posture (vertical pressing state) against the watertight rubber member 55 by the horizontal pressing mechanism 8, a water stop structure is formed over the entire height in both ends in the width direction of the shutter curtain 1 in the fully closed posture.

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

[0033] The horizontal pressing mechanism 8 according to the present embodiment includes a first limit switch and a second limit switch. When the horizontal pressing mechanism 8 is not operating, a movable part of the horizontal pressing mechanism 8 is in contact with the first limit switch, and the second limit switch is in a non-contact state. When the horizontal pressing mechanism operates and the piston rod 81 protrudes to a predetermined pressing position, the first limit switch becomes non-contact, and the movable part comes into contact with the second limit switch. The first limit switch and the second limit switch constitute means for detecting the horizontal pressing state. Specifically, when the first limit switch is ON (the second limit switch is OFF), it is in a non-horizontal pressing state. When the first limit switch is OFF and the second limit switch is OFF, it is during the horizontal pressing operation or the horizontal pressing release operation. When the second limit switch is ON (the first limit switch is OFF), it is detected that it is in a horizontal pressing state. In the present embodiment, when the first limit switch changes from OFF to ON, it is the time when the horizontal pressing mechanism 8 releases the pressing, and when the second limit switch changes from OFF to ON, it is the time when the horizontal pressing mechanism 8 completes the pressing.

[0034] [B-3] Central column As shown in FIGS. 1 and 2, in this embodiment, the waterproof shutter includes a movable central column 9. The central column 9 is located on the indoor side of the shutter curtain 1 in the fully closed state and is installed in close proximity to the indoor side surface of the shutter curtain 1. The central column 9 is adapted to resist the water pressure acting from the outdoor side to the indoor side against the shutter curtain 1 in the fully closed posture. In one aspect, the installation of the central column 9 is to move the central column 9 from the storage position to the installation position after setting the shutter curtain 1 in the fully closed posture to a water-stopping state (vertical compression and horizontal compression), and then install it in close proximity to the indoor side surface of the shutter curtain 1.

[0035] [B-4] Operation control device of the waterproof shutter The waterproof shutter according to this embodiment can be used as a so-called management panel shutter, and is also used for normal opening and closing of building openings. In case of an emergency such as heavy rain being expected, it functions as a waterproof shutter. The operation control of the electric waterproof shutter, which is the waterproof shutter according to this embodiment, is performed by an 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, that is, three operation units. The first outdoor switch box SB1 and the indoor switch box SB3 are located and arranged at a height of 1500 mm from the floor surface so that they are easy to operate by the operator standing. The second outdoor switch box SB2 is located and arranged at a height exceeding 3000 mm (assumed maximum water level W.L.) from the floor surface. The above height positions are examples and are not limited.

[0037] On the operation panel inside the switch box, there are an opening button, a closing button, a stop button, a compression button, a compression release button, and an emergency closing button. The operation of the waterproof shutter is controlled based on the input from these buttons. More specifically, according to the instructions from the button input, the opening and closing machine M (the lifting and lowering operation of the shutter curtain 1), the vertical compression mechanism 7 (the vertical compression operation and vertical compression release operation of the shutter curtain 1 in the fully closed state), and the horizontal compression mechanism 8 (the horizontal compression operation and horizontal compression release operation of the shutter curtain 1 in the vertically compressed state) are controlled via the control unit. Hereinafter, each button will be described.

[0038] The waterproof shutter according to this embodiment includes a fully closed state detection means (for example, composed of a lower limit limit switch and a seat plate switch) for detecting that the shutter curtain 1 has reached the fully closed state of the opening, a vertical compression state detection means (a first limit switch, a second limit switch) for detecting that the shutter curtain 1 has reached the vertical compression state, and a horizontal compression state detection means (a first limit switch, a second limit switch) for detecting that the shutter curtain 1 has reached the horizontal compression state.

[0039] When the shutter is in the compression release state (both the vertical compression release state and the horizontal compression release state) and not in the fully open position, pressing the opening button causes the shutter curtain 1 to rise and stop at the fully open position. When the shutter is not in the fully closed position, pressing the closing button causes the shutter curtain to descend and stop at the fully closed position. When the stop button is pressed during the operation of the shutter or during the compression operation and compression release operation, the operating shutter curtain 1 stops operating at an arbitrary position.

[0040] When the shutter is not in the fully closed position and not in the compressed state (neither the vertical compression state nor the horizontal compression state), pressing the compression button starts the compression operation to obtain the water stop structure. When the pressing operation of the vertical compression mechanism 7 is completed (when the second limit switch of the vertical compression mechanism 7 is turned on, a vertical compression state signal is generated), the horizontal compression mechanism 8 starts the pressing operation and integrally compresses the shutter curtain 1 compressed in the height direction toward the indoor side. When the shutter is not in the fully closed position, pressing the emergency closing button can lower the shutter curtain by a cutting operation.

[0041] When the shutter is in the compressed state or not in the fully closed position and not in the compression release state, pressing the compression release button starts the compression release operation. As one procedure, when the compression release button is pressed, first, the horizontal compression mechanism 8 starts the release operation. When the release operation of the horizontal compression mechanism 8 is completed (when the first limit switch is turned 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 is turned 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 aspect, in addition to the operation inputs 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 confirming safety with a surveillance camera or the like) is possible. A series of operation controls of the shutter are possible by the remote operation signal, and it is also possible to perform the compression operation and the compression release operation by remote operation.

[0043] [C] Configuration of the shutter curtain As shown in FIGS. 1 to 4, the shutter curtain 1 of the waterproof shutter according to the present embodiment is configured by connecting a top panel 2, a plurality of panels 3, and a bottom panel 4 in the panel height direction. When the shutter curtain 1 is lifted and lowered and in the fully closed position, the top panel 2, the plurality of panels 3, and the bottom panel 4 are in a vertical position. The description of each part of the top panel 2, the plurality of panels 3, and the bottom panel 4 (specifically, vertical, hanging, horizontal, etc.) is mainly based on the vertical position of the panel.

[0044] [C-1] Top panel [C-1-1] Outer shape of the top panel Referring to FIGS. 8 to 10, the configuration of the top panel 2 will be described. The top panel 2 is a generally horizontally rectangular plate-like body having a predetermined width, a predetermined height, and a predetermined thickness (prospective dimensions) extending in the opening width direction, and includes an outdoor side finding surface 20, an indoor side finding surface 21, an upper surface portion 22, a lower surface portion 23, and side surface portions 24 at both ends in the width direction. As shown in FIG. 8, the top panel 2 has the same width dimension throughout.

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

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

[0047] In a side view, the lower surface portion 23 of the top panel 2 includes an outdoor lower surface 230, an outdoor inclined surface 231 that extends indoors and upward from an indoor portion of the outdoor lower surface 230, a central horizontal surface 232 that extends horizontally indoors from an indoor portion of the outdoor inclined surface 231, an indoor inclined surface 233 that extends indoors and downward from an indoor portion of the central horizontal surface 232, an indoor vertical surface 234 that hangs down from an indoor portion of the indoor inclined surface 233, and an indoor lower surface 235 that extends horizontally indoors from the lower end of the indoor vertical surface 234.

[0048] As shown in FIG. 10, a buffer and airtight member 15 is provided on the lower surface portion 23 of the top panel 2. The configuration of the lower end portion of the top panel 2 (including the lower outdoor side finding surface 202, the lower surface portion 23, and the buffer and 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, refer to the configuration of the lower end portion of the panel 3 described later.

[0049] [C―1―2] Surface material of the top panel The top panel 2 is assembled from a plurality of steel plates formed into a predetermined shape. In this embodiment, the main surface portion 200 of the outdoor finding surface 20 of the top panel 2 is formed of a first surface material. Bent pieces are integrally formed at the upper and lower ends of the first surface material. The bent piece at the upper end forms the outdoor end portion of the upper surface portion 22, and the bent piece at the lower end forms the lower end edge portion 201.

[0050] The indoor finding surface 21 of the top panel 2 is formed of a second surface material. Bent pieces are integrally formed at the upper and lower ends of the second surface material. The bent piece at the upper end forms the upper surface 220 of the upper surface portion 22, and the bent piece at the lower end forms the indoor lower surface 235 of the lower surface portion 23.

[0051] The lower outdoor side finding surface 202 of the outdoor side finding surface 20 and the outdoor side part of the lower surface part 23 are made of a third surface material bent into a predetermined shape, and the indoor side part of the lower surface part 23 is made of a fourth surface material bent into a predetermined shape. The parts of the third surface material and the fourth surface material overlap to form a central horizontal plane 232, and the part of the fourth surface material and the bent piece at the lower end of the second surface material overlap to form an indoor side lower surface 235.

[0052] The side surface part 24 is formed of a surface part having a shape along the cross-sectional shape of the top panel 2 and a fifth surface material composed of a pair of finding pieces. The pair of finding pieces are respectively in contact with and connected (welded) to the inner surfaces of the outdoor side finding surface 20 and the indoor side finding surface 21. The upper end of the fifth surface material forming the side surface part 24 is in contact with the upper surface 200 of the upper surface part 22, and the lower end is at least partially in contact with the lower surface part 23. A hole part 240 is formed in the side surface part 24 so as to straddle the horizontal plane 250 of the intermediate horizontal reinforcing member 25, and gaps 241 and openings 242 as drainage openings are formed in the lower part (see Fig. 10A).

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

[0054] Although the first surface material to the sixth surface material formed into a predetermined shape have been described, these are examples, and the shape, number, assembly structure, etc. of the surface material (plate material) forming the surface of the top panel 2 are not limited.

[0055] [C-1-3] Horizontal Reinforcing Member of Top Panel Inside the top panel 2, a plurality of horizontal reinforcing members extending across the entire width are provided. Incidentally, a plurality of horizontal reinforcing members 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 the present embodiment, the top panel 2 includes three horizontal reinforcing members: an upper horizontal reinforcing member 25', an intermediate horizontal reinforcing member 25, and a lower horizontal reinforcing member 26.

[0056] The upper horizontal reinforcing member 25' has a U-shape in a cross-sectional view, including a horizontal plane 250', an outdoor side hanging piece 251', and an indoor side hanging piece 252'. The horizontal plane 250' has an expected dimension corresponding to the dimension between the inner surfaces of the first surface material forming the main surface portion 200 of the outdoor side finding surface 20 and the second surface material forming the indoor side finding surface 21. The outdoor side hanging piece 251' and the indoor side hanging piece 252' are respectively abutted and connected (welded) to the inner surfaces of the first surface material and the second surface material. Both end portions in the length direction of the upper horizontal reinforcing member 25' are connected (welded) to the finding pieces of the fifth surface material forming the side surface portion 24. A pressing plate forming the bottom portion 223 of the recess 221 is supported on the horizontal plane 250' of the upper horizontal reinforcing member 25'.

[0057] The intermediate horizontal reinforcing member 25 has a U-shape in a cross-sectional view, including a horizontal plane 250, an outdoor side hanging piece 251, and an indoor side hanging piece 252. Incidentally, instead of the outdoor side hanging piece 251 and the indoor side hanging piece 252, a U-shape may be formed from rising pieces. The horizontal plane 250 has an expected dimension corresponding to the dimension between the inner surfaces of the first surface material forming the main surface portion 200 of the outdoor side finding surface 20 and the second surface material forming the indoor side finding surface 21. The outdoor side hanging piece 251 and the indoor side hanging piece 252 are respectively abutted and connected (welded) to the inner surfaces of the first surface material and the second surface material. Both end portions in the length direction of the upper horizontal reinforcing member 25 are connected (welded) to the finding pieces of the fifth surface material forming the side surface portion 24. A plurality of drain holes (not shown) are formed at intervals in the length direction (panel width direction) on the horizontal plane 250 of the intermediate horizontal reinforcing member 25.

[0058] The lower horizontal reinforcing member 26 has a U-shape in cross-section, comprising a horizontal plane 260, an outdoor side rising piece 261, and an indoor side rising piece 262. Note that instead of the outdoor side rising piece 261 and the indoor side rising piece 262, a U-shape may be formed by hanging pieces. The horizontal plane 260 has an expected dimension corresponding to the dimension between the inner surfaces of the first surface material forming the main surface portion 200 of the outdoor side finding surface 20 and the second surface material forming the indoor side finding surface 21. The outdoor side rising piece 261 and the indoor side rising piece 262 are respectively in contact with and connected (welded) to the inner surfaces of the first surface material and the second surface material. The corner formed by the outdoor side portion of the horizontal plane 260 and the outdoor side rising piece 261 is in contact with the inner surface of the corner at the lower end of the first surface material (see Fig. 10). Both ends in the length direction of the lower horizontal reinforcing member 26 are connected (welded) to the finding pieces of the fifth surface material forming the side surface portion 24. A plurality of drain holes (not shown) are formed in the horizontal plane 260 of the lower horizontal reinforcing member 26 at intervals in the length direction (panel width direction).

[0059] [C―1―4] Vertical Reinforcing Member of the Top Panel In the internal space of the top panel 2, a vertical reinforcing member is provided in a manner that resists the vertical force acting on the top panel 2 and transmits the vertical force downward. In this embodiment, between the upper horizontal reinforcing member 25' and the intermediate horizontal reinforcing member 25 of the top panel 2, a first vertical reinforcing member 27 is provided immediately below the bottom surface 223 of the recess 221 on the upper surface portion 22 of the top panel 2. Between the intermediate horizontal reinforcing member 25 and the lower horizontal reinforcing member 26, a second vertical reinforcing member 28 is provided immediately below the first vertical reinforcing member 27. Between the lower horizontal reinforcing member 26 and the third surface material and the fourth surface material forming the lower end portion, a third vertical reinforcing member 29 is provided immediately below the second vertical reinforcing member 28.

[0060] The first vertical reinforcing member 27 is provided in such a manner as to counter the vertical force acting on the top panel 2 and transmit the vertical force downward. The first vertical reinforcing member 27 has a height dimension such that its upper end abuts against the horizontal plane 250' of the upper horizontal reinforcing member 25', and its lower end abuts against the horizontal plane 250 of the intermediate horizontal reinforcing member 25. Further, it has an expected dimension that abuts against the inner surfaces of the first surface material (the main surface portion 200 of the outdoor finding surface 20) and the second surface material (the indoor finding surface 21).

[0061] More specifically, as shown in FIG. 9, the first vertical reinforcing member 27 according to the present embodiment has, in a cross-sectional view, an outdoor finding surface 270, a pair of expected surfaces 271 extending inward from both ends in the width direction (finding direction) of the outdoor finding surface 270, and a pair of indoor finding pieces 272 extending in the finding direction so as to be spaced apart from each other from the indoor-side tips of the pair of expected surfaces 271. It has a cross-sectional hat shape, and the outdoor finding surface 270, the pair of expected surfaces 271, and the pair of indoor finding pieces 272 extend perpendicularly in the height direction of the top panel 2.

[0062] The expected surface 271 of the first vertical reinforcing member 27 has an expected dimension corresponding to the dimension between the inner surfaces of the first surface material forming the main surface portion 200 of the outdoor finding surface 20 and the second surface material forming the indoor finding surface 21. The first vertical reinforcing member 27 is connected (welded) with the outdoor finding surface 270 abutting against the inner surface of the outdoor finding surface 20 and the indoor finding piece 272 abutting against the inner surface of the indoor finding surface 21. The upper edge of the first vertical reinforcing member 27 (at least the pair of expected surfaces 271) is a horizontal edge and abuts against the lower surface of the horizontal plane 250' of the upper horizontal reinforcing member 25'. The lower edge of the first vertical reinforcing member 27 (at least the pair of expected surfaces 271) is a horizontal edge and abuts against the upper surface of the horizontal plane 250 of the intermediate horizontal reinforcing member 25. A hole portion 2710 is formed in the lower portion of the expected surface 271.

[0063] The second vertical reinforcing member 28 is provided in such a manner as to counter the vertical force acting on the top panel 2 and transmit the vertical force downward. The second vertical reinforcing member 28 has a height dimension such that its upper end abuts against the horizontal plane 250 of the intermediate horizontal reinforcing member 25, and its lower end abuts against the horizontal plane 260 of the lower horizontal reinforcing member 26. Also, it has an expected dimension that abuts against the inner surfaces of the first surface material (the main surface portion 200 of the outdoor-facing surface 20) and the second surface material (the indoor-facing surface 21).

[0064] Similar to the first vertical reinforcing member 27 (see FIG. 9), in a cross-sectional view, the second vertical reinforcing member 28 has a hat-shaped cross-sectional shape formed by an outdoor-facing surface 280, a pair of expected surfaces 281 extending inward from both ends in the width direction (the finding direction) of the outdoor-facing surface, and a pair of indoor-facing finding pieces 282 extending in the finding direction so as to be spaced apart from each other from the indoor-side tips of the pair of expected surfaces 281. The outdoor-facing surface 280, the pair of expected surfaces 281, and the pair of indoor-facing finding pieces 282 extend perpendicularly in the height direction of the top panel 2.

[0065] The expected surface 281 of the second vertical reinforcing member 28 has an expected dimension corresponding to the dimension between the inner surfaces 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. The second vertical reinforcing member 28 is connected (welded) with the outdoor-facing surface 280 abutting against the inner surface of the outdoor-facing surface 20 and the indoor-facing finding piece 282 abutting against the inner surface of the indoor-facing surface 21. The upper edge of the second vertical reinforcing member 28 (at least the pair of expected surfaces 281) is a horizontal edge and abuts against the lower surface of the horizontal plane 250 of the intermediate horizontal reinforcing member 25. The lower edge of the second vertical reinforcing member 28 (at least the pair of expected surfaces 281) is a horizontal edge and abuts against the upper surface of the horizontal plane 260 of the lower horizontal reinforcing member 26. Two hole portions 2810 are formed in the expected surface 281 at intervals in the vertical direction.

[0066] The third vertical reinforcing member 29 is provided in such a manner as to counter the vertical force acting on the top panel 2 and transmit the vertical force downward. The third vertical reinforcing member 29 has a height dimension such that its upper end abuts against the horizontal plane 260 of the lower horizontal reinforcing member 26, and its lower end abuts against the portion (at least including the horizontal plane) of the third surface member and the fourth surface member forming the lower end portion. Also, it has a projected dimension for abutting against the outdoor-side vertical portion (lower outdoor-side finding surface 202) of the third surface member and the second surface member (indoor-side finding surface 21).

[0067] Similar to the first vertical reinforcing member 27 (see FIG. 9) and the second vertical reinforcing member 28, the third vertical reinforcing member 29 has a hat-shaped cross-sectional view, including an outdoor-side finding surface 290, a pair of projected surfaces 291 extending inward from both ends in the width direction (finding direction) of the outdoor-side finding surface 290, and a pair of indoor-side finding pieces 292 extending in the finding direction so as to be spaced apart from each other from the indoor-side tips of the pair of projected surfaces 291. The outdoor-side finding surface 290, the pair of projected surfaces 291, and the pair of indoor-side finding pieces 292 extend perpendicularly in the height direction of the top panel 2.

[0068] The projected surface 291 of the third vertical reinforcing member 29 has a projected dimension corresponding to the dimension between the portion of the third surface member forming the lower outdoor-side finding surface 202 and the inner surface of the second surface member forming the indoor-side finding surface 21. The third vertical reinforcing member 29 is connected (welded) with its outdoor-side finding surface 290 abutting against the inner surface of the third surface member forming the lower outdoor-side finding surface 202 and its indoor-side finding piece 292 abutting against the inner surface of the second surface member forming the indoor-side finding surface 21. The upper edge of the third vertical reinforcing member 29 (at least the pair of projected surfaces 291) is a horizontal edge and abuts against the lower surface of the horizontal plane 260 of the lower horizontal reinforcing member 26. The lower edge of the third vertical reinforcing member 29 (at least the pair of projected surfaces 291) partially abuts against the fourth surface member forming the central horizontal plane 232, the indoor-side vertical plane 234, and the indoor-side lower plane 235. 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 plane 234, and a horizontal edge 294 abutting against the indoor-side lower plane 235. An opening 2910 is formed below the horizontal edge 293 of the third vertical reinforcing member 29.

[0069] [C-2] Intermediate Panel [C-2-1] Outer Shape of Intermediate Panel With reference to FIGS. 11 to 15, the configuration of panel 3 will be described. Panel 3 is a generally horizontally rectangular plate-like body having a predetermined width, a predetermined height, and a predetermined thickness (prospective dimensions) extending in the opening width direction, and includes an outdoor-facing surface 30, an indoor-facing surface 31, an upper surface portion 32, a lower surface portion 33, and side surface portions 34 at both ends in the width direction.

[0070] The lower end portion of the outdoor-facing surface 30 is formed in a stepped shape recessed toward the indoor-facing surface 31 side. Specifically, the outdoor-facing surface 30 includes a main surface portion 300 and a stepped portion formed below the main surface portion 300. The stepped portion is formed from a lower end edge portion 301 at the lower end of the main surface portion 300 and a lower outdoor-facing surface (step surface) 302 that is displaced and hangs toward the indoor-facing surface 31 side with respect to the vertically oriented main surface portion 300.

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

[0072] On the outdoor side portion of the upper surface part 32, there is provided an outdoor side rising piece 303 that stands vertically flush with the main surface part 300 of the outdoor side finding surface 30. On the indoor side portion of the upper surface part 32, there is provided an indoor side rising piece 310 that stands vertically flush with the indoor side finding surface 31. The upper end portion of the panel 3 is composed of the upper surface part 32, the outdoor side rising piece 303, and the indoor side rising piece 310. As shown in FIG. 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 the edge 3030 in the panel width direction of the outdoor side rising piece 303 is located inward of the side surface part 34 of the panel 3.

[0073] The lower surface part 33 of the panel 3, in a side view, is formed by an outdoor side lower surface 330, an outdoor side inclined surface 331 that extends indoors and upward from the indoor side portion of the outdoor side lower surface 330, a central horizontal surface 332 that extends horizontally indoors from the indoor side portion of the outdoor side inclined surface 331, an indoor side inclined surface 333 that extends indoors and downward from the indoor side portion of the central horizontal surface 332, an indoor side vertical surface 334 that hangs down from the indoor side portion of the indoor side inclined surface 333, and an indoor side lower surface 335 that extends horizontally indoors from the lower end of the indoor side vertical surface 334. An approximately trapezoidal part is formed by the outdoor side inclined surface 331, the central horizontal surface 332, and the indoor side inclined surface 333 in a side view.

[0074] The upper end portion of the panel 3 includes an upper surface part 32, an outdoor side rising piece 303 that stands vertically flush with the main surface part 300 of the outdoor side finding surface 30, and an indoor side rising piece 310 that stands vertically flush with the indoor side finding surface 31. In the indoor side portion of the upper end portion of the panel 3, a groove portion extending in the panel width direction is formed by the indoor side vertical surface 324, the indoor side lower surface 325, and the indoor side rising piece 310, and an elastic water stop member 16 is fitted into the groove portion. The configuration of the elastic water stop member 16 will be described in detail later. In this embodiment, the elastic water stop member 16 is provided at the upper end portion of the panel 3, but an elastic water stop member may be provided at the lower end portion of the panel 3, or at both the upper end portion and the lower end portion, such that the elastic water stop portion is 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 posture of the opening.

[0075] The lower end portion of panel 3 is composed of the lower end portion of the outdoor-side finding surface 30 (the stepped portion composed of the lower end edge 301 and the lower outdoor-side finding surface 302) and the lower surface portion 33. As shown in FIG. 14, a buffer and airtight member 15 extending in the opening width direction is provided on the central horizontal plane 332 of the lower surface portion 33. The buffer and airtight member 15 has a dimension shorter than the full width of the panel, and the longitudinal end edges of the buffer and airtight member 15 substantially coincide with the panel width direction end edges 3030 of the outdoor-side rising piece 303. The buffer and airtight member 15 according to the present embodiment is formed from a first layer 150 made of a flame-retardant rubber with high hardness (made of chloroprene rubber or the like and mainly functioning as a buffer material) and a second layer 151 made of a flame-retardant foam with low hardness (made of EPDM foam or the like and mainly functioning as an airtight material), but the material is not limited. In the present embodiment, a two-layer structure of the buffer and airtight member 15 is shown, but it is not limited thereto, and a buffer and airtight member 15 having a one-layer structure may be formed from one member. In the present embodiment, the buffer and airtight member 15 is provided at the lower end portion of the panel 3, but the buffer and airtight member may be provided at the upper end portion of the panel 3, or at both the upper end portion and the lower end portion, such that the buffer 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 in the fully closed posture of the opening.

[0076] As shown in FIGS. 14 and 15, end outdoor airtight members 17 are provided at both end portions in the panel width direction of the lower outdoor side finding surface 302 of the panel 3. The end outdoor airtight member 17 is a member having a front view shape, and the height dimension corresponds to the height dimension of the entire height of the lower outdoor side finding surface 302 of the panel 3 (in the illustrated embodiment, slightly larger than the entire height of the lower outdoor side finding surface 302), and has a finding dimension substantially corresponding to the distance between the side surface 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 outdoor airtight member 17 is larger than the expected dimension of the lower end edge portion 301 at the lower end of the main surface portion 300 of the outdoor side finding surface 30. In a state where the end outdoor airtight member 17 is attached to both end portions in the panel width direction of the lower outdoor side finding surface 302, the outer surface of the end outdoor airtight member 17 is located slightly outside the main surface portion 300. The end outdoor airtight member 17 according to the present embodiment is formed of a flame-retardant rubber sponge (such as chloroprene rubber), but the material is not limited. In the present embodiment, the end outdoor airtight members 17 are provided at both end portions in the panel width direction of the lower end portion of the panel 3. However, depending on the shape of the outdoor side finding surface 30 of the panel 3, end outdoor airtight members may be provided at the upper end portion.

[0077] As shown in FIGS. 14 and 15, a lower end airtight member 18 is provided to connect between the end outdoor side airtight member 17 and the buffer and airtight member 15. The lower end airtight member 18 extends along the outdoor side lower surface 330, the outdoor side inclined surface 331, and the central horizontal surface 332 at both ends in the width direction of the lower end portion of the panel 3. The lower end of the end outdoor side airtight member 17 extends downward beyond the outdoor side lower surface 330, and a part of the outdoor side portion of the lower end airtight member 18 is in close contact with the inner surface of the lower end portion of the end outdoor side airtight member 17. The lower end airtight member 18 according to the present embodiment is formed of a first layer 180 made of a flame-retardant rubber sponge (such as chloroprene rubber) with high hardness and a second layer 181 made of a flame-retardant foam with low hardness (made of EPDM foam or the like and mainly functioning as an airtight material), but the material is not limited. In the present embodiment, the lower end airtight member 18 having a two-layer structure is shown, but it is not limited thereto, and the lower end airtight member 18 having a one-layer structure may be formed of one member. As shown in FIG. 14, an airtight member is provided over the entire width of the panel from the buffer and airtight member 15, the left and right lower end airtight members 18 adhered to both ends in the length direction of the buffer and airtight member 15, and the left and right end outdoor side airtight members 17 adhered to 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 the present 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 of the panel 3, or at both the upper end portion and the lower end portion, so that the lower end airtight member is 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 posture of the opening.

[0078] [C―2―2] Surface material of the intermediate panel The panel 3 is assembled from a plurality of steel plates formed into a predetermined shape. In the present embodiment, the main surface portion 300 of the outdoor-facing surface 30 of the panel 3 is formed of a first surface material, and bent pieces are integrally formed at the upper and lower ends of the first surface material, respectively. The bent piece at the upper end forms the outdoor horizontal plane 320 of the upper surface portion 32, and the bent piece at the lower end serves as the lower edge portion 301. The indoor-facing surface 31 of the panel 3 is formed of a second surface material. The upper end portion of the second surface material forms an indoor rising piece 310, and a bent piece is integrally formed at the lower end. The bent piece at the lower end serves as the indoor lower surface 335 of the lower surface portion 33.

[0079] The outdoor portion of the upper surface portion 32 is made of a third surface material bent into a predetermined shape, and the indoor portion of the upper surface portion 32 is made of a fourth surface material bent into a predetermined shape. The portions of the third surface material and the fourth surface material overlap to form the central horizontal plane 322. The outdoor rising piece 303 is formed of a plate material having an L shape in side view.

[0080] The lower outdoor-facing surface 301 below the outdoor-facing surface 30 and the outdoor portion of the lower surface portion 33 are made of a fifth surface material bent into a predetermined shape. The indoor portion of the lower surface portion 33 is made of a sixth surface material bent into a predetermined shape. The portions of the fifth surface material and the sixth surface material overlap to form the central horizontal plane 332. The portion of the sixth surface material and the bent piece at the lower end of the second surface material overlap to form the indoor lower surface 335. A plurality of drain holes (not shown) are formed in the sixth surface material forming the indoor vertical surface 334 of the lower surface portion 33 at positions spaced in the panel width direction at the lower end portion of the indoor vertical surface 334. The drain holes may be formed partially straddling the indoor lower surface 335.

[0081] The side surface portion 34 is formed of a surface portion having a shape along the cross-sectional shape of the panel 3 and a seventh surface material composed of a pair of finding pieces. The pair of finding pieces are in contact with and connected (welded) to the inner surfaces of the outdoor finding surface 30 and the indoor finding surface 31. The upper end of the seventh surface material forming the side surface portion 34 is at least partially in contact with the inner surfaces of the third surface material and the fourth surface material forming the upper surface portion 32, and the lower end is at least partially in contact with the fifth surface material and the sixth surface material forming the lower surface portion 33. A hole portion 340 (see FIG. 15) is formed in the side surface portion 34 so as to straddle the horizontal plane 350 of the intermediate horizontal reinforcing member 35. Further, a gap 341 and an opening 342 serving as drainage openings are formed in a lower portion of the side surface portion 34.

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

[0083] [C-2-3] Horizontal Reinforcing Member of Intermediate Panel Inside the panel 3, a plurality of horizontal reinforcing members extending across the entire width are provided. Incidentally, a plurality of short horizontal reinforcing members with respect to the entire width of the panel 3 may be connected in the opening width direction. As shown in FIGS. 11 and 13, in the present embodiment, the panel 3 includes two horizontal reinforcing members, an intermediate horizontal reinforcing member 35 and a lower horizontal reinforcing member 36.

[0084] The intermediate horizontal reinforcing member 35 has a U-shape in cross-section, including a horizontal plane 350, an outdoor side hanging piece 351, and an indoor side hanging piece 352. Instead of the outdoor side hanging piece 351 and the indoor side hanging piece 352, a U-shape may be formed by a rising piece and a hanging piece. The horizontal plane 350 has an expected dimension corresponding to the dimension between the inner surfaces of the first surface material forming the main surface portion 300 of the outdoor side finding surface 30 and the second surface material forming the indoor side finding surface 31. The outdoor side hanging piece 351 and the indoor side hanging piece 352 are respectively in contact with and connected (welded) to the inner surfaces of the first surface material and the second surface material. Both ends in the length direction of the intermediate horizontal reinforcing member 35 are connected (welded) to the finding pieces of the seventh surface material forming the side surface portion 34. A plurality of drain holes (not shown) are formed at intervals in the length direction (panel width direction) on the horizontal plane 350 of the intermediate horizontal reinforcing member 35.

[0085] The lower horizontal reinforcing member 36 has a U-shape in cross-section, including a horizontal plane 360, an outdoor side rising piece 361, and an indoor side rising piece 362. Instead of the outdoor side rising piece 361 and the indoor side rising piece 362, a U-shape may be formed by a hanging piece. The horizontal plane 360 has an expected dimension corresponding to the dimension between the inner surfaces of the first surface material forming the main surface portion 300 of the outdoor side finding surface 30 and the second surface material forming the indoor side finding surface 31. The outdoor side rising piece 361 and the indoor side rising piece 362 are respectively in contact with and connected (welded) to the inner surfaces of the first surface material and the second surface material. The corner formed by the outdoor side portion of the horizontal plane 360 and the outdoor side rising piece 361 is in contact with the inner surface of the corner at the lower end of the first surface material (see Fig. 13). Both ends in the length direction of the lower horizontal reinforcing member are connected (welded) to the finding pieces of the seventh surface material forming the side surface portion 34. A plurality of drain holes (not shown) are formed at intervals in the length direction (panel width direction) on the horizontal plane 360 of the lower horizontal reinforcing member 36.

[0086] [C―2―4] Vertical Reinforcing Member of Intermediate Panel In the internal space of panel 3, a vertical reinforcing member is provided in a manner that resists the vertical force acting on panel 3 and transmits the vertical force downward. In this embodiment, between the third surface material, the fourth surface material forming the upper surface portion 32 of panel 3 and the intermediate horizontal reinforcing member 35, when the shutter curtain 1 is in the fully closed position, a first vertical reinforcing member 37 is provided directly below the vertical reinforcing member of the panel directly above (the third vertical reinforcing members 29 to 39 of the top panel 2 or panel 3). Between the intermediate horizontal reinforcing member 35 and the lower horizontal reinforcing member 36, a second vertical reinforcing member 38 is provided directly below the first vertical reinforcing member 37. Between the lower horizontal reinforcing member 36 and the fifth surface material, the sixth surface material forming the lower surface portion 33, a third vertical reinforcing member 39 is provided directly below the second vertical reinforcing member 38.

[0087] The first vertical reinforcing member 37 is provided in a manner that resists the vertical force acting on panel 3 and transmits the vertical force downward. The first vertical reinforcing member 37 has a height dimension such that its upper end partially abuts against the third surface material and the fourth surface material forming the upper surface portion 32, and its lower end abuts against the horizontal plane 350 of the intermediate horizontal reinforcing member 35. Also, it has a projected dimension that abuts against the inner surfaces of the first surface material (the main surface portion 300 of the outdoor finding surface 30) and the second surface material (the indoor finding surface 31).

[0088] More specifically, as shown in FIG. 12, the first vertical reinforcing member 37 according to this embodiment has a hat-shaped cross-sectional view, including an outdoor finding surface 370, a pair of projected surfaces 371 extending inward from both ends in the width direction (finding direction) of the outdoor finding surface 370, and a pair of indoor finding pieces 372 extending in the finding direction so as to be separated from each other from the indoor-side tips of the pair of projected surfaces 371. The outdoor finding surface 370, the pair of projected surfaces 371, and the pair of indoor finding pieces 372 extend perpendicularly to the height direction of panel 3.

[0089] The expected surface 371 of the first vertical reinforcing member 37 has an expected dimension corresponding to the dimension between the inner surfaces of the first surface member forming the main surface portion 300 of the outdoor-facing surface 30 and the second surface member forming the indoor-facing surface 31. The first vertical reinforcing member 37 is connected (welded) with the outdoor-facing surface 370 in contact with the inner surface of the outdoor-facing surface 30 and the indoor-facing piece 372 in contact with the inner surface of the indoor-facing surface 31.

[0090] The upper edge of the first vertical reinforcing member 37 (at least a pair of expected surfaces 371) is shaped along the third surface member and the fourth surface member forming the upper surface portion 32, and is in partial (at least the horizontal part) contact with the lower surfaces of the third surface member and the fourth surface member forming the upper surface portion 32. The lower edge of the first vertical reinforcing member 37 (at least a pair of expected surfaces 371) is a horizontal edge and is in contact with the upper surface of the horizontal plane 350 of the intermediate horizontal reinforcing member 35. A hole 3710 is formed in the lower part of the expected surface 371.

[0091] The second vertical reinforcing member 38 is provided in such a manner as to counteract the vertical force acting on the panel 3 and transmit the vertical force downward. The second vertical reinforcing member 38 has a height dimension with its upper end in contact with the horizontal plane 350 of the intermediate horizontal reinforcing member 35 and its lower end in contact with the horizontal plane 360 of the lower horizontal reinforcing member 36, and also has an expected dimension in contact with the first surface member (the main surface portion 300 of the outdoor-facing surface 30) and the second surface member (the indoor-facing surface 31).

[0092] Similar to the first vertical reinforcing member 37 (see FIG. 12), in a cross-sectional view, the second vertical reinforcing member 38 has a hat-shaped cross-sectional shape formed by an outdoor-facing surface 380, a pair of expected surfaces 381 extending inward from both ends in the width direction (looking direction) of the outdoor-facing surface, and a pair of indoor-facing pieces 382 extending in the looking direction so as to be separated from each other from the inner ends of the pair of expected surfaces 381. The outdoor-facing surface 380, the pair of expected surfaces 381, and the pair of indoor-facing pieces 382 extend perpendicularly to the height direction of the panel 3.

[0093] The prospective surface 381 of the second vertical reinforcing member 38 has a prospective dimension corresponding to the dimension between the inner surfaces of the first surface member forming the main surface portion 300 of the outdoor finding surface 30 and the second surface member forming the indoor finding surface 31. The second vertical reinforcing member 38 is connected (welded) with the outdoor finding surface 380 abutting against the inner surface of the outdoor finding surface 30 and the indoor finding piece 382 abutting against the inner surface of the indoor finding surface 31.

[0094] The upper edge of the second vertical reinforcing member 38 (at least a pair of prospective surfaces 381) is a horizontal edge and abuts against the lower surface of the surface portion 350 of the intermediate horizontal reinforcing member 35. The lower edge of the second vertical reinforcing member 38 (at least a pair of prospective surfaces 381) is a horizontal edge and abuts against the upper surface of the horizontal surface 360 of the lower horizontal reinforcing member 36. Two hole portions 3810 are formed at intervals in the vertical direction on the prospective surface 381.

[0095] The third vertical reinforcing member 39 is provided in such a manner as to counteract the vertical force acting on the panel 3 and transmit the vertical force downward. The third vertical reinforcing member 39 has a height dimension with its upper end abutting against the horizontal surface 360 of the lower horizontal reinforcing member 36 and its lower end abutting against the portion of the fifth surface member and the sixth surface member forming the lower end portion (including at least the horizontal surface). Also, it has a prospective dimension abutting against the outdoor vertical portion (lower outdoor finding surface 302) of the fifth surface member and the second surface member (indoor finding surface 31).

[0096] Similar to the first vertical reinforcing member 37 (see FIG. 12) and the second vertical reinforcing member 38, the third vertical reinforcing member 39 has a hat-shaped cross-sectional view, which includes an outdoor finding surface 390, a pair of prospective surfaces 391 extending inward from both ends in the width direction (finding direction) of the outdoor finding surface 390, and a pair of indoor finding pieces 392 extending in the finding direction so as to be separated from each other from the indoor tips of the pair of prospective surfaces 391. The outdoor finding surface 390, the pair of prospective surfaces 391, and the pair of indoor finding pieces 392 extend vertically along the height direction of the panel 3.

[0097] The prospective surface 391 of the third vertical reinforcing member 39 has a prospective dimension corresponding to the dimension between the portion of the fifth surface member forming the lower outdoor side finding surface 302 and the inner surface of the second surface member forming the indoor side finding surface 31. The third vertical reinforcing member 39 is connected (welded) such that the outdoor side finding surface 390 abuts against the inner surface of the fifth surface member forming the lower outdoor side finding surface 302, and the indoor side finding piece 392 abuts against the inner surface of the second surface member forming the indoor side finding surface 31.

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

[0099] [C-3] Bottom Panel [C-3-1] Outer Shape of the Bottom Panel (Panel Body) While referring to FIGS. 16 to 18, the configuration of the bottom panel 4 according to this embodiment will be described. The bottom panel 4 is composed of a bottom panel body 4' and a movable seat plate 6 provided at the lower end of the bottom panel body 4'. The bottom panel body 4' is a generally horizontally rectangular plate-like body having a predetermined width, height, and thickness (prospective dimensions) extending in the opening width direction, and includes an outdoor side finding surface 40, an indoor side finding surface 41, an upper surface portion 42, a lower surface portion 43 (outdoor side lower surface 430, indoor side lower surface 31), and side surface portions 44 at both ends in the width direction. As shown in FIG. 16, the width dimension (finding dimension) of the movable seat plate 6 is the same as the width dimension (finding dimension) of the bottom panel body 4', and the prospective dimension of the movable seat plate 6 is the same as the prospective dimension of the bottom panel body 4'.

[0100] The upper surface portion 42 of the panel body 4' of the bottom panel 4 is composed of a horizontal outdoor upper surface 420, an outdoor inclined surface 421 that extends indoors and upward from the indoor side portion of the outdoor upper surface 420, a central horizontal surface 422 that extends horizontally indoors from the indoor side portion of the outdoor inclined surface 421, an indoor inclined surface 423 that extends indoors and downward from the indoor side portion of the central horizontal surface 422, an indoor vertical surface 424 that hangs down from the indoor side portion of the indoor inclined surface 423, and an indoor lower surface 425 that extends horizontally indoors from the lower end of the indoor vertical surface 424.

[0101] On the outdoor side portion of the upper surface portion 42, there is provided an outdoor rising piece 400 that stands vertically flush with the outdoor finding surface 40. On the indoor side portion of the upper surface portion 42, there is provided an indoor rising piece 410 that stands vertically flush with the indoor finding surface 41. The upper end portion of the panel body 4' is composed of the upper surface portion 42, the outdoor rising piece 400, and the indoor rising piece 410. As shown in Fig. 16, the width dimension of the outdoor rising piece 400 of the panel body 4' is smaller than the width dimension of the panel body 4', and the edge 4000 in the panel width direction of the outdoor rising piece 400 is located inward of the side surface portion 44 of the panel body 4'. The configuration of the upper end portion of the panel body 4' is substantially the same as the configuration of the upper end portion of the panel 3. For the top view of the bottom panel body 4', reference can be made to the top view of the panel 3 shown in Fig. 11.

[0102] The lower end portion of the panel body 4' is composed of an outdoor lower surface 430, an indoor lower surface 431, and an opening formed between the indoor tip of the outdoor horizontal lower surface 430 and the outdoor tip of the indoor lower surface 431. A movable seat plate 6 is provided at the lower end portion of the panel body 4' so as to be vertically movable.

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

[0104] The outdoor portion of the upper surface portion 42 is made of a third surface material bent into a predetermined shape, and the indoor portion of the upper surface portion 42 is made of a fourth surface material bent into a predetermined shape. The portions of the third surface material and the fourth surface material overlap to form a central horizontal plane 422. The outdoor rising piece 400 is formed from a plate material having an L-shaped cross section in side view.

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

[0106] [C-3-3] Horizontal Reinforcing Member of Bottom Panel (Panel Main Body) Inside the panel body 4´, a plurality of horizontal reinforcing members extending across the entire width are provided. Incidentally, a plurality of horizontally short reinforcing members may be connected in the opening width direction with respect to the entire width of the panel body 4´. In the present embodiment, the panel body 4´ includes two horizontal reinforcing members, an intermediate horizontal reinforcing member 45 and a lower horizontal reinforcing member 46.

[0107] The intermediate horizontal reinforcing member 45 has a U-shape in a cross-sectional view, including a horizontal plane 450, an outdoor-side hanging piece 451, and an indoor-side hanging piece 452. Instead of the outdoor-side hanging piece 451 and the indoor-side hanging piece 452, a U-shape may be formed from rising pieces. The horizontal plane 450 has an expected dimension corresponding to the dimension between the inner surfaces of the first surface material forming the outdoor-side finding surface 40 and the second surface material forming the indoor-side finding surface 41. The outdoor-side hanging piece 451 and the indoor-side hanging piece 452 are respectively in contact with and connected (welded) to the inner surfaces of the first surface material and the second surface material. Both ends in the length direction of the intermediate horizontal reinforcing member 45 are connected (welded) to the finding pieces of the fifth surface material forming the side surface portion 44. A plurality of drain holes (not shown) are formed at intervals in the length direction (panel width direction) on the horizontal plane 450 of the intermediate horizontal reinforcing member 45.

[0108] The lower horizontal reinforcing member 46 has a U-shape in cross-section, including a horizontal plane 460, an outdoor vertical plane 461 that hangs down from the outdoor-side end of the horizontal plane 460, and an indoor vertical plane 462 that hangs down from the indoor-side end of the horizontal plane 460. The horizontal plane 460 has an expected dimension corresponding to the dimension between the inner surfaces of the first surface member forming the outdoor-side finding surface 40 and the second surface member forming the indoor-side finding surface 41. The outdoor vertical plane 461 and the indoor vertical plane 462 are in contact with and connected (welded) to the inner surfaces of the outdoor-side finding surface 40 and the indoor-side finding surface 41. The lower end of the outdoor vertical plane 461 is in contact with the proximal end side of the outdoor-side lower surface 430, which is an outdoor-side horizontal piece, and the lower end of the indoor vertical plane 462 is in contact with the proximal end side of the indoor-side lower surface 431, which is an indoor-side horizontal piece. The height dimension of the lower horizontal reinforcing member 46 is larger than the height dimension of the intermediate horizontal reinforcing member 45, and a plurality of detection switches SW are provided in the space surrounded by the lower horizontal reinforcing member 46, the outdoor-side lower surface 430, and the indoor-side lower surface 431 across the width direction. The horizontal plane 460 of the lower horizontal reinforcing member 46 serves as the mounting surface for the detection switches SW. A plurality of drain holes (not shown) are formed at intervals in the length direction (panel width direction) on the horizontal plane 460 of the lower horizontal reinforcing member 46.

[0109] [C-3-4] Vertical Reinforcing Member of Bottom Panel (Panel Body) Inside the internal space of the main body 4', a vertical reinforcing member is provided in a manner that resists the vertical force acting on the panel main body 4' and transmits the vertical force downward. In this embodiment, between the third surface member and the fourth surface member forming the upper surface portion 42 of the panel main body 4' and the intermediate horizontal reinforcing member 45, when the shutter curtain 1 is in the fully closed position, a first vertical reinforcing member 47 is provided directly below the vertical reinforcing member (third vertical reinforcing member 39) of the panel 3 directly above. Between the intermediate horizontal reinforcing member 45 and the lower horizontal reinforcing member 46, a second vertical reinforcing member 48 is provided directly below the first vertical reinforcing member 47.

[0110] The first vertical reinforcing member 47 is provided in such a manner as to counter the vertical force acting on the panel body 4' and transmit the vertical force downward. The first vertical reinforcing member 47 has a height dimension such that its upper end is partially in contact with the third and fourth surface materials forming the upper surface portion 42, and its lower end is in contact with the horizontal surface 450 of the intermediate horizontal reinforcing member 45. Also, it has an expected dimension for contacting the inner surfaces of the first surface material (the outdoor-facing surface 40) and the second surface material (the indoor-facing surface 41).

[0111] More specifically, in a cross-sectional view, the first vertical reinforcing member 47 according to the present embodiment has a hat-shaped cross-sectional shape formed by an outdoor-facing surface 470, a pair of expected surfaces 471 extending inward from both ends in the width direction (the finding direction) of the outdoor-facing surface 470, and a pair of indoor-facing finding pieces 472 extending in the finding direction so as to be spaced apart from each other from the indoor-side tips of the pair of expected surfaces 471. The outdoor-facing surface 470, the pair of expected surfaces 471, and the pair of indoor-facing finding pieces 472 extend perpendicularly to the height direction of the panel body 4'.

[0112] The expected surface 471 of the first vertical reinforcing member 47 has an expected 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. The first vertical reinforcing member 47 is connected (welded) with the outdoor-facing surface 470 in contact with the inner surface of the outdoor-facing surface 40 and the indoor-facing finding piece 472 in contact with the inner surface of the indoor-facing surface 41.

[0113] The upper edge of the first vertical reinforcing member 47 (at least the pair of expected surfaces 471) has a shape along the third and fourth surface materials forming the upper surface portion 42, and is partially (at least the horizontal portion) in contact with the lower surfaces of the third and fourth surface materials forming the upper surface portion 42. The lower edge of the first vertical reinforcing member 47 (at least the pair of expected surfaces 471) is a horizontal edge and is in contact with the upper surface of the horizontal surface 450 of the intermediate horizontal reinforcing member 45. A hole portion 4710 is formed in the lower part of the expected surface 471.

[0114] The second vertical reinforcing member 48 is provided in such a manner as to counter the vertical force acting on the panel body 4' and transmit the vertical force downward. The second vertical reinforcing member 48 has a height dimension such that its upper end abuts against the horizontal plane 450 of the intermediate horizontal reinforcing member 45 and its lower end abuts against the horizontal plane 460 of the lower horizontal reinforcing member 46. Further, it has an expected dimension for abutting against the first surface material (outdoor finding surface 40) and the second surface material (indoor finding surface 41).

[0115] Similar to the first vertical reinforcing member 47, in a cross-sectional view, the second vertical reinforcing member 48 has a shape of a hat in cross-section, including an outdoor finding surface 480, a pair of expected surfaces 481 extending inward from both ends in the width direction (finding direction) of the outdoor finding surface, and a pair of indoor finding pieces 482 extending in the finding direction so as to be spaced apart from each other from the indoor ends of the pair of expected surfaces 481. The outdoor finding surface 480, the pair of expected surfaces 481, and the pair of indoor finding pieces 482 extend perpendicularly to the height direction of the panel body 4'.

[0116] The expected surface 481 of the second vertical reinforcing member 48 has an expected dimension corresponding to the dimension between the inner surfaces of the first surface material forming the outdoor finding surface 40 and the second surface material forming the indoor finding surface 41. The second vertical reinforcing member 48 is connected (welded) with the outdoor finding surface 480 abutting against the inner surface of the outdoor finding surface 40 and the indoor finding piece 482 abutting against the inner surface of the indoor finding surface 41.

[0117] The upper edge of the second vertical reinforcing member 48 (at least the pair of expected surfaces 481) is a horizontal edge and abuts against the lower surface of the horizontal plane 450 of the intermediate horizontal reinforcing member 45. The lower edge of the second vertical reinforcing member 48 (at least the pair of expected surfaces 481) is a horizontal edge and abuts against the upper surface of the horizontal plane 460 of the lower horizontal reinforcing member 46. In this embodiment, the entire lower edge of the second vertical reinforcing member 48 is a horizontal edge and abuts against the upper surface of the horizontal plane 460 of the lower horizontal reinforcing member 46. Two hole portions 4810 are formed at intervals in the vertical direction on the expected surface 481.

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

[0119] The dimension between the outdoor finding surface 63 and the indoor finding surface 64 of the movable seat plate 6 is slightly smaller than the width of the opening on the lower surface of the panel body 4'. The movable seat plate 6 is suspended so as to be movable upward from the lower end of the panel body 4' in a state where the outdoor locking piece 65 is locked to the outdoor lower surface 430 which is the outdoor horizontal piece of the panel body 4' and the indoor locking piece 66 is locked to the indoor lower surface 431 which is the indoor horizontal piece of the panel body 4'.

[0120] Located inside the lower end portion of the panel body 4' (the space surrounded by the lower horizontal reinforcing member 46), a plurality of detection switches SW are attached to the horizontal plane 460 of the lower horizontal reinforcing member 46 at intervals in the panel width direction. When the shutter curtain 1 descends and the bottom surface of the movable seat plate 6 abuts against an obstacle or the floor surface, and the movable seat plate 6 moves upward relative to the panel body 4' and any of the detection switches SW is turned on, an obstacle detection signal is transmitted to the control unit via the cord reel CR.

[0121] The expected dimensions of the movable seat plate 6 are the same as those of the panel body 4'. The outdoor finding surface 40 of the panel body 4' and the outdoor rising piece 61 of the movable seat plate 6 are flush, and the indoor finding surface 41 of the panel body 4' and the indoor rising piece 62 of the movable seat plate 6 are flush.

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

[0123] On the indoor side portion of the movable seat plate 6, a groove portion extending in the length direction of the movable seat plate 6 (the width direction of the bottom panel 4) is formed from the indoor side portion of the bottom surface 60, the indoor side rising piece 62, and the indoor side finding surface 64, and an indoor side elastic water stop member 16β is fitted in the groove portion. The configuration of the indoor side elastic water stop member 16β provided on the movable seat plate 6 is the same as that of the elastic water stop member 16 provided on the panel 3 except for slight differences in dimensions and shapes, and common reference numerals are assigned to each part (Figs. 26 and 27), and the description of the elastic water stop member 16 can be incorporated by reference. Also, the configurations of the indoor side elastic water stop member 16β and the outdoor side elastic water stop member 16α are substantially the same. In this embodiment, the outdoor side elastic water stop member 16α and the indoor side elastic water stop member 16β are provided on the movable seat plate 6, but the outdoor side elastic water stop member and the indoor side elastic water stop member may be provided on the lower surface portion 43 (the outdoor side lower surface 430 and the indoor side lower surface 31) of the bottom panel body 4´, or on both the movable seat plate 6 and the lower surface portion 43 so that the outdoor side elastic water stop member and the indoor side elastic water stop member are sandwiched between the movable seat plate 6 and the lower surface portion 43 of the bottom panel body 4´ in the fully closed posture of the opening.

[0124] An elastic water stop member 19 that contacts the floor surface FL during landing and is pressed against the floor surface FL during vertical compression is provided over the entire width on the lower surface of the bottom surface 60 of the movable seat plate 6.

[0125] [C-4] Configuration of the fitting of panels adjacent vertically in the 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 each fitted together. In the present embodiment, in the panels adjacent vertically, the lower end portion to the lower side portion of the upper panel is generally concave, and the upper end portion to the upper side portion of the lower panel is generally convex, and they are fitted together with unevenness in the fully closed state of the opening. 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, regarding the fitting between the panels adjacent vertically of the shutter curtain 1 according to the present embodiment, it will be described based on the fitting of the panels 3 adjacent vertically in the shutter curtain 1 in the fully closed position.

[0126] First, the posture before the lower end portion of the upper panel 3 and the upper end portion of the lower panel 3 are fitted together will be described. When the shutter curtain 1 descends, each panel 3 is in a vertical posture, and the lower end portion of the upper panel 3 and the upper end portion of the lower panel 3 are separated (see the left figure of FIG. 4, see FIG. 21). 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 descends is shown in FIG. 21. The positional relationship between the lower end portion of the upper panel 3 and the upper end portion of the lower panel 3 in the posture where the outdoor side finding surfaces 30 and the indoor side finding surfaces 31 of the upper and lower panels 3 coincide with each other is shown in the left figure of FIG. 21.

[0127] In the left view of FIG. 21, the outdoor side finding surface 302 below the lower end portion of the upper panel 3 and the upper end portion (hemmed folded-back portion) of the outdoor side rising piece 303 of the upper end portion of the lower panel 3 are close (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. The central horizontal plane 322 of the upper surface portion 32 of the upper end portion of the lower panel 3 is located directly below the buffer and airtight member 15 provided on the central horizontal plane 332 of the lower surface portion 33 of the lower end portion of the upper panel 3. The indoor side inclined surface 323 of the upper surface portion 32 of 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 of the lower end portion of the upper panel 3. The indoor side vertical surface 324 of the upper surface portion 32 of the upper end portion of the lower panel 3 is located slightly on the outdoor side of the indoor side vertical surface 334 of the lower surface portion 33 of the lower end portion of the upper panel 3 (the indoor side vertical surface 334 is close to and hangs down from the indoor side vertical surface 324). Below the indoor side lower surface 335 of the lower surface portion 33 of the lower end portion of the upper panel 3, an elastic water stop member 16 (upper surface 164) is located in the indoor side portion (groove portion formed by the indoor side vertical surface 324, the indoor side lower surface 325, and the indoor side rising piece 310) of the upper end portion of the panel 3 of the lower panel 3. When the upper panel 3 moves downward with respect to the lower panel 3 from the state of the left view of FIG. 21, the state shown in FIG. 19 is obtained.

[0128] In the central view of Fig. 21, when the upper and lower adjacent panels 3 descend, the upper panel 3 is shown in a state of being slightly displaced inward relative to the lower panel 3. When the shutter curtain 1 is displaced inward during its descent, since the inward-facing surface 31 of the panel 3 contacts the watertight rubber member 55, it will not be further displaced inward from the state shown in the central view of Fig. 21. In the central view of Fig. 21, the corner of the outdoor inclined surface 331 and the central horizontal plane 330 of the lower end portion of the upper panel 3 is located slightly inward relative to the corner of the outdoor upper surface 320 and the outdoor inclined surface 321 of the upper end portion of the lower panel 3. When the upper panel 3 moves downward relative to the lower panel 3 from this state, the outdoor inclined surface 331 of the upper panel 3 is guided by the outdoor inclined surface 321 of the lower panel 3, and the upper panel 3 moves outward relative to the lower panel 3, reaching the state shown in Fig. 19.

[0129] In the right view of Fig. 21, when the upper and lower adjacent panels 3 descend, the upper panel 3 is shown in a state of being slightly displaced outward relative to the lower panel 3. When the shutter curtain 1 is displaced outward during its descent, since the lower outdoor-facing surface 302 of the lower end portion contacts the upward rising piece 303 of the upper end portion of the lower panel 3, it will not be further displaced outward from the state shown in the right view of Fig. 21. In the right view of Fig. 21, the corner of the indoor vertical surface 334 and the indoor lower surface 335 of the lower end portion of the upper panel 3 is located slightly inward relative to the corner of the indoor inclined surface 323 and the indoor vertical surface 324 of the upper end portion of the lower panel 3. When the upper panel 3 moves downward relative to the lower panel 3 from this state, the lower outdoor-facing surface 302 of the lower end portion is guided downward while slidingly contacting the upward rising piece 303 of the upper end portion of the lower panel 3, and the indoor vertical surface 334 of the lower end portion of the upper panel 3 is guided downward while slidingly contacting the indoor vertical surface 324 of the lower panel 3, reaching the state shown in Fig. 19.

[0130] Figure 19 shows the 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 from the state shown in the left figure of FIG. 21 (the shutter curtain 1 is in the fully closed position and in a non-vertically compressed state). In FIG. 19, the outdoor-side rising piece 303 of the upper end portion of the lower panel 3 is close to the outdoor side of the outdoor-side finding surface 302 of the lower end portion of the upper panel 3 (the outdoor-side rising piece 303 is located in the step portion formed by the lower edge portion 301 and the outdoor-side finding surface 302), the outdoor-side lower surface 330 of the lower surface portion 33 of the lower end portion of the upper panel 3 is close to the outdoor-side upper surface 320 of the upper surface portion 32 of the upper end portion of the lower panel 3 (in this embodiment, they are separated and in a non-contact state), the outdoor-side inclined surface 331 of the lower surface portion 33 of the lower end portion of the upper panel 3 is close to the outdoor-side inclined surface 321 of the upper surface portion 32 of the upper end portion of the lower panel 3 (in this embodiment, they are separated and in a non-contact state), the buffer and airtight member 15 provided on the central horizontal plane 332 of the lower surface portion 33 of the lower end portion of the upper panel 3 is in contact with the central horizontal plane 322 of the upper surface portion 32 of the upper end portion of the lower panel 3, the indoor-side inclined surface 333 of the lower surface portion 33 of the lower end portion of the upper panel 3 is close to the indoor-side inclined surface 323 of the upper surface portion 32 of the upper end portion of the lower panel 3 (in this embodiment, they are separated and in a non-contact state), the indoor-side vertical surface 334 of the lower surface portion 33 of 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 of the upper end portion of the lower panel 3, and the indoor-side lower surface 335 of the lower surface portion 33 of the lower end portion of the upper panel 3 is in contact with the elastic water-stop member 16 (upper surface 164) provided on the indoor-side portion of the upper end portion of the lower panel 3. Since the panels 2, 3, and 4 according to this embodiment are assembled from a surface material made of a steel plate with a predetermined shape, there is a drawback that it is difficult to achieve high precision compared to panels formed by aluminum molding. In this embodiment, by adopting the fitting structure as described above, rattling between the panels due to accuracy errors and the like is suppressed. Further, since the lower end portion of the upper panel and the upper end portion of the lower panel are in close contact via the buffer and airtight member 15 that functions as a damper, even if there is an accuracy error, close contact between the panels can be ensured, and the downward pressing force by the vertical compression mechanism 7 can be effectively applied downward.

[0131] In the state of FIG. 19, the vertically compressed state is shown in FIG. 20. In FIG. 20, the outdoor rising piece 303 at the upper end portion of the lower panel 3 is close to the outdoor side of the outdoor finding surface 302 at the lower end portion of the upper panel 3 (the outdoor rising piece 303 is located at the step portion formed by the lower edge portion 301 and the lower outdoor finding surface 302), the outdoor 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 upper surface 320 of the upper surface portion 32 at the upper end portion of the lower panel 3, the outdoor inclined surface 331 of the lower surface portion 33 at the lower end portion of the upper panel 3 is close to the outdoor inclined surface 321 of the upper surface portion 32 at the upper end portion of the lower panel 3 (in this embodiment, they are separated and in a non-contact state), the buffer and airtight member 15 provided on the central horizontal plane 332 of the lower surface portion 33 at the lower end portion of the upper panel 3 is in a state of being crushed between it and the central horizontal plane 322 of the upper surface portion 32 at the upper end portion of the lower panel 3, the indoor inclined surface 333 of the lower surface portion 33 at the lower end portion of the upper panel 3 is close to the indoor inclined surface 323 of the upper surface portion 32 at the upper end portion of the lower panel 3 (in this embodiment, they are separated and in a non-contact state), the indoor 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 vertical surface 324 of the upper surface portion 32 at the upper end portion of the lower panel 3, and the indoor lower surface 335 of the lower surface portion 33 at the lower end portion of the upper panel 3 is in a state of pressing the elastic water stop member 16 provided at the indoor side portion at the upper end portion of the panel 3 of the lower panel 3 downward.

[0132] [C-5] Position of the vertical reinforcement in the shutter curtain As shown in FIGS. 3 and 8, inside the top panel 2 according to this embodiment, there are provided five sets of vertical reinforcing member units, which consist of a first vertical reinforcing member 27, a second vertical reinforcing member 28, and a third vertical reinforcing member 29 and are spaced apart in the panel width direction. The vertical reinforcing member units are continuous in the panel height direction (in this embodiment, they are continuous so as to overlap in the height direction via horizontal reinforcing members). As shown in FIGS. 3 and 11, inside the panel 3 according to this embodiment, there are provided five sets of vertical reinforcing member units, which consist of a first vertical reinforcing member 37, a second vertical reinforcing member 38, and a third vertical reinforcing member 39 and are spaced apart in the panel width direction. The vertical reinforcing member units are continuous in the panel height direction (in this embodiment, they are continuous so as to overlap in the height direction via horizontal reinforcing members). As shown in FIGS. 3 and 16, inside the bottom panel 4 according to this embodiment, there are provided five sets of vertical reinforcing member units, which consist of a first vertical reinforcing member 47 and a second vertical reinforcing member 48 and are spaced apart in the panel width direction. The vertical reinforcing member units are continuous in the panel height direction (in this embodiment, they are continuous so as to overlap in the height direction via horizontal reinforcing members). The internal spaces of the top panel 2, the panel 3, and the bottom panel main body 4' according to this embodiment are partitioned into a plurality of spaces (rooms) by a plurality of horizontal reinforcing members and a plurality of vertical reinforcing members. This will be described taking the panel 3 as an example. As shown in FIG. 11A (see FIGS. 11 and 13), the internal space of the panel 3 is partitioned by an intermediate horizontal reinforcing member 35 and a lower horizontal reinforcing member 36 into an upper part between the upper surface part 32 and the intermediate horizontal reinforcing member 35, an intermediate part between the intermediate horizontal reinforcing member 35 and the lower horizontal reinforcing member 36, and a lower part between the lower horizontal reinforcing member 36 and the lower surface part 33. The upper part is further partitioned by five first vertical reinforcing members 37 that extend vertically with a space in the panel width direction 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. The intermediate part is further partitioned by five second vertical reinforcing members 38 that extend vertically with a space in the panel width direction 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. The lower part is further partitioned by five third vertical reinforcing members 39 that extend vertically with a space in the panel width direction 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.Inside each of the first vertical reinforcing members 37 in the upper portion, there are formed a 19th space 3a, a 20th space 3b, a 21st space 3c, a 22nd space 3d, and a 23rd space 3e, respectively. Inside each of the second vertical reinforcing members 38 in the middle portion, there are formed a 24th space 3f, a 25th space 3g, a 26th space 3h, a 27th space 3i, and a 28th space 3j, respectively. Inside each of the third vertical reinforcing members 39 in the lower portion, there are formed a 29th space 3k, a 30th space 3l, a 31st space 3m, a 32nd space 3m, and a 33rd space 3o, respectively. In these 33 spaces, adjacent spaces communicate with each other through at least one hole (hole 3710 provided in the first vertical reinforcing member 37, hole 3810 provided in the second vertical reinforcing member, drain hole provided in the horizontal plane 350 of the intermediate horizontal reinforcing member 35, drain hole provided in the horizontal plane 360 of the lower horizontal reinforcing member 36) or opening (opening 3910 provided below the third vertical reinforcing member 39), enabling the flow of water between each space. On the side surface portion 34 of the panel 3, holes 340 to gaps 341 and openings 342 are formed corresponding to each of the rooms 3A, 3G, 3M, 3F, 3L, 3R (see FIG. 15). On the lower surface portion 33 of the panel 3, holes or openings are formed corresponding to each of the rooms 3M, 3k, 3N, 3l, 3O, 3m, 3P, 3n, 3Q, 3o, 3R. The water that has flooded inside the panel 3 can be drained to the outside through the side surface portion 34 and the lower surface portion 33 of the panel 3. For example, when the water recedes after a rise in water level, no water remains inside the panel 3. The description of the structure of the panel 3 above can be applied to the description of the top panel 2 and the bottom panel body 4'.

[0133] As shown in Fig. 3, the vertical reinforcing member units of the top panel 2, the vertical reinforcing member units of the panel 3, and the vertical reinforcing member units of the bottom panel 4 are aligned in the height direction. In this embodiment, three vertical pressing mechanisms 7 are arranged at intervals in the opening width direction. Three pressed parts (in this embodiment, pressed recesses 221) are provided on the top panel 3 corresponding to the three vertical pressing mechanisms 7. Among the five sets of vertical reinforcing member units of the top panel 2, the upper ends of the left and right vertical reinforcing member units and the central vertical reinforcing member unit are located at the pressed parts. By configuring in this way, each of the panels 2, 3, and 4 can resist the downward pressing force by the vertical pressing mechanism 7, and can also make the pressing force act downward well.

[0134] [D]Water stop structure [D - 1]Water stop structure between panels in a shutter curtain in a fully closed position When the shutter curtain 1 in the fully closed position is in a vertically compressed state, a water stop structure or a watertight structure is formed between the lower end part of the top panel 2 and the upper end part of the panel 3, between the lower end part of the panel 3 and the upper end part of the panel 3, and between the lower end part of the panel 3 and the upper end part of the bottom panel 4.

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

[0136] In this embodiment, the water stop structure is formed at the indoor side portion of the shutter curtain 1 in the fully closed position. At the indoor side portion of the upper end portion of the panel 3, a groove portion extending in the panel width direction is formed 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 into the groove portion. 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 figure in Fig. 4). 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 on 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 changes to the vertical compression state from the state shown in Fig. 19, with the indoor side lower surface 335 of the upper panel 3 abutting on the upper surface 164 of the elastic water stop member 16 of the lower panel 3, the elastic water stop member 16 is pressed downward, and 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 is blocked by the pressed elastic water stop member 16, thereby forming a water stop structure (see Fig. 20).

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

[0138] As shown in FIGS. 24 and 25, the long elastic waterstop member 16 fitted into the groove portion extending in the panel width direction is integrally formed from a hard elastic portion 16A located within the groove portion and a soft elastic portion 16B located outside the groove portion. So to speak, it is in the form where the soft elastic portion 16B is integrally formed on the base formed by the hard elastic portion 16A. In the present embodiment, the hard elastic portion 16A is formed from a flame-retardant rubber (such as chloroprene rubber), and the soft elastic portion 16B is formed from a flame-retardant rubber sponge (such as chloroprene rubber sponge), but these materials are merely examples and are not limited thereto. In the present embodiment, by integrally forming the elastic waterstop member 16 from the hard elastic portion 16A located within the groove portion and the soft elastic portion 16B located outside the groove portion, when the panel is under its own weight or vertical compression, deformation of the base (foundation) of the elastic waterstop member 16 within the groove portion is prevented as much as possible, and the shape of the base (foundation) of the elastic waterstop member 16 is maintained.

[0139] As shown in FIG. 24, the hard elastic portion 16A includes a bottom surface 160, an inner finding surface 161, an outer finding portion 162, and a connecting surface (upper surface portion) 163, and the soft elastic portion 16B includes a surface to be abutted (upper surface) 164, an inner finding surface 165, an outer finding surface 166, and a connecting surface (lower surface portion) 167 that adheres to the connecting surface (upper surface portion) 163. It should be noted that in the description of the elastic waterstop member 16, "inner side" means the side closer to the indoor vertical surface 324 when fitted into the groove portion, and "outer side" means the side farther from the indoor vertical surface 324 when fitted into the groove portion.

[0140] The connecting surface (upper surface portion) 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 towards the bottom surface 160, and the connecting surface (lower surface portion) 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, the first inclined surface 1631 and the second inclined surface 1671 are in close contact.

[0141] The upper surface of the elastic waterstop member 16 is formed from the upper surface 164 of the soft elastic part 16B, and the bottom surface of the elastic waterstop member 16 is formed from the bottom surface 160 of the hard elastic part 16A. The inner finding surface 161 of the hard elastic part 16A and the inner finding surface 165 of the soft elastic part 16B are flush, and the inner finding surface 161 of the hard elastic part 16A and the inner finding surface 165 of the soft elastic part 16B form the inner finding surface of the elastic waterstop member 16.

[0142] On the inner finding surface 161 of the hard elastic part 16A, a plurality of (4 in the illustrated embodiment) ridges 1610 extending in the panel width direction project. That is, the inner finding part of the hard elastic part 16A consists of the inner finding surface 161 and a plurality of ridges 1610 formed on the inner finding surface 161 and extending in the panel width direction.

[0143] The outer finding surface 166 of the soft elastic part 16B consists 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 will be described later, the outer finding surface 166 of the soft elastic part 16B consists of a first part 1660 that adheres closely to the inner surface of the outer finding piece (indoor side rising piece 310) and a second part 1661 located outside the groove part. The outer finding part 162 of the hard elastic part 16A consists of a protruding piece 1620 that protrudes in an inclined shape so as to be separated from the bottom surface 160, and a recess 1621 that is adjacent to the upper side of the protruding piece 1620 and allows elastic deformation of the protruding piece 1620. In a state where no external force acts on the elastic waterstop member 16, the tip of the protruding piece 1620 is located slightly inside the outer finding surface 166 of the soft elastic part 16B, but they may also be substantially coincident.

[0144] As shown in FIG. 25, the rigid elastic portion 16A of the elastic water stop member 16 is fitted into the groove portion, and most of the soft elastic portion 16B of the elastic water stop member 16 is located outside the groove portion (above the groove portion), and only the outer and lower portions are located within the groove portion. In a state where the elastic water stop member 16 is fitted into the groove portion, the bottom surface of the elastic water stop member 16 (the bottom surface 160 of the rigid elastic portion 16A) is in contact with the bottom portion (the indoor-side lower surface 325), and the inner finding portion of the rigid elastic portion 16A is in contact with the first portion 3240 of the inner finding surface (the indoor-side vertical surface 324) of the groove portion via the protrusion 1610. The outer finding portion 162 of the rigid elastic portion 16A is in close contact with the inner surface of the outer finding piece (the indoor-side rising piece 310) via the protrusion piece 1620.

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

[0146] The inner finding portion of the rigid elastic portion 16A contacts the first portion 3240 of the inner finding surface (the indoor-side vertical surface 324) of the groove portion via the protrusion 1610, so that a force in the direction of pressing the elastic water stop member 16 against the inner surface of the outer finding piece (the indoor-side rising piece 310) acts. The first portion 1660 of the outer finding surface 166 is in a crushed state (1660´) and is in close contact with the inner surface of the outer finding piece (the indoor-side rising piece 310), and the protrusion piece 1620 of the rigid elastic portion 16A is in an elastically deformed state upward, and the tip side is in close contact with the inner surface of the outer finding piece (the indoor-side rising piece 310).

[0147] In a state where the elastic water stop member 16 is fitted into the groove portion, the protruding piece 1620 of the outer finding portion 162 of the hard elastic portion 16A extends in an inclined manner so as to be separated from the bottom surface 160, and the tip side is in close contact with the inner surface of the outer finding piece (indoor side rising piece 310). It resists in the direction in which the elastic water stop member 16 comes out of the groove portion, and prevents the elastic water stop member 16 from coming out of the groove portion.

[0148] The inner finding surface 161 of the hard elastic portion 16A and the inner finding surface 165 of the soft elastic portion 16B are flush. The inner finding surface 165 of the soft elastic portion 16B is close to (in this embodiment, separated and in a non-contact state) the second portion 3241 of the inner finding surface (indoor side vertical surface 324) of the groove portion in the non-vertical compression posture (FIG. 25). In the vertical compression posture, when the hard elastic portion 16A is pressed in the height direction, the inner finding surface 165 comes into close contact with the second portion 3241 (FIG. 26).

[0149] In the vertical compression posture of the elastic water stop member 16, the indoor side lower surface 335 of the upper panel 3 is pressed against the upper surface 164 of the elastic water stop member 16 of the lower panel 3, so that a water stop structure is formed at the indoor side portion between the lower end portion of the upper panel 3 and the upper end portion of the lower panel 3. Further, as shown in FIG. 20, in the vertical compression posture of the elastic water stop member 16, when the elastic water stop member 16 is pressed in the height direction, the lower end portion (the portion adjacent to the first portion 1660) of the second portion 1661 of the outer finding surface 166 of the soft elastic portion 16B is in close contact with the leading edge (upper end edge) 3100 of the outer finding piece (indoor side rising piece 310), and a water stop structure is formed.

[0150] As shown in Fig. 20, the inner finding surface 165 of the soft elastic part 16B of the elastic water stop member 16 is in close contact with the second part 3241, so that the gap between the elastic water stop member 16 and the inner finding surface (the indoor vertical surface 324) is blocked. Also, the bottom surface 160 of the elastic water stop member 16 is in close contact with the bottom surface of the groove part (325). However, even if water seeps in from the interface between the groove part and the elastic water stop member 16, the lower end part (the part adjacent to the first part 1660) of the second part 1661 of the outer finding surface 166 of the soft elastic part 16B is in close contact with the leading edge (upper edge) 3100 of the outer finding piece (the indoor rising piece 310), thereby preventing water from entering the indoor side.

[0151] The second part 1661 of the outer finding surface 166 is in a state of bulging outward (shown by 1661´) from the outer surface of the outer finding piece (the indoor rising piece 310). It should be noted that the bulging shape of the second part 1661 shown in Fig. 26 is only an example, and depending on the way the force is applied, etc., it can have different bulging shapes. As will be described later, in the vertical compression and horizontal compression states, the bulging second part 1661´ of the outer finding surface 166 is in close contact with the watertight rubber member 55.

[0152] [D―2] Water stop structure between the bottom panel body and the seat plate in the shutter curtain in the fully closed position When the shutter curtain 1 in the fully closed position is in a vertically compressed state, a water stop structure is formed between the bottom panel body 4´ and the movable seat plate 6 in the bottom panel 4. In the present embodiment, the water stop structure is formed at the indoor side part of the bottom panel 4 of the shutter curtain 1 in the fully closed position.

[0153] On the indoor side of the movable seat plate 6, a groove portion extending in the length direction of the movable seat plate 6 (the width direction of the bottom panel 4) is formed by the indoor side portion of the bottom surface 60, the indoor side rising piece 62, and the indoor side finding surface 64, and an indoor side elastic water stop member 16β is fitted in the groove portion. 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). In the fully closed position (non-vertical compression state) of the shutter curtain 1, the indoor side lower surface 431 of the lower end portion of the main body 4' abuts on the upper surface 164 of the elastic water stop member 16β (see Fig. 22). When the shutter curtain 1 in the fully closed position changes from the state of Fig. 22 to the vertical compression state, with the indoor side lower surface 431 of the lower end portion of the main body 4' abutting on the upper surface 164 of the elastic water stop member 16β, the elastic water stop member 16β is pressed downward, and the gap between the lower end portion of the panel main body 4' and the indoor side portion of the movable seat plate 6 is closed by the pressed elastic water stop member 16β to form a water stop structure (see Fig. 28).

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

[0155] As shown in FIGS. 24 and 27, the long elastic waterstop member 16β fitted into the groove portion extending in the panel width direction (seat plate width direction) is integrally formed from a hard elastic portion 16A located within the groove portion and a soft elastic portion 16B whose upper portion is located outside the groove portion. So to speak, it is in a form where the soft elastic portion 16B is integrally formed on the base formed by the hard elastic portion 16A. In the present embodiment, the hard elastic portion 16A is formed from a flame-retardant rubber (such as chloroprene rubber), and the soft elastic portion 16B is formed from a flame-retardant rubber sponge (such as chloroprene rubber sponge), but these materials are examples and are not limited. In the present embodiment, by integrally forming the elastic waterstop member 16 from the hard elastic portion 16A located within the groove portion and the soft elastic portion 16B located outside the groove portion, when the panel is under its own weight or vertical compression, deformation of the base (foundation) of the elastic waterstop member 16 within the groove portion is prevented as much as possible, and the shape of the base (foundation) of the elastic waterstop member 16 is maintained.

[0156] The basic configuration of the elastic waterstop member 16β is the same as that of the elastic waterstop member 16 and can be described with reference to FIG. 24. As shown in FIG. 24, the hard elastic portion 16A includes a bottom surface 160, an inner finding surface 161, an outer finding portion 162, and a connection surface (upper surface portion) 163, and the soft elastic portion 16B includes a surface to be abutted (upper surface) 164, an inner finding surface 165, an outer finding surface 166, and a connection surface (lower surface portion) 167 that adheres to the connection surface (upper surface portion) 163. Note that in the description of the elastic waterstop member 16, it should be noted that "inner side" means the side closer to the indoor finding surface 64 of the movable seat plate 6 when fitted into the groove portion, and "outer side" means the side farther from the indoor finding surface 64 when fitted into the groove portion.

[0157] The connection surface (upper surface portion) 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 towards the bottom surface 160, and the connection surface (lower surface portion) 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.

[0158] The upper surface of the elastic water stop member 16 is formed from the upper surface 164 of the soft elastic part 16B, and the bottom surface of the elastic water stop member 16 is formed from the bottom surface 160 of the hard elastic part 16A. The inner finding surface 161 of the hard elastic part 16A and the inner finding surface 165 of the soft elastic part 16B are flush, and the inner finding surface 161 of the hard elastic part 16A and the inner finding surface 165 of the soft elastic part 16B form the inner finding surface of the elastic water stop member 16.

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

[0160] The outer finding surface 166 of the soft elastic part 16B consists 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 will be described later, the outer finding surface 166 of the soft elastic part 16B consists of a first part 1660 that adheres closely to the inner surface of the outer finding piece (indoor side rising piece 62) and a second part 1661 located outside the groove part. The outer finding part 162 of the hard elastic part 16A consists of a protruding piece 1620 that protrudes in an inclined shape so as to be separated from the bottom surface 160, and a recess 1621 that is adjacent to the upper side of the protruding piece 1620 and allows elastic deformation of the protruding piece 1620. In a state where no external force acts on the elastic water stop member 16, the tip of the protruding piece 1620 is located slightly inside the outer finding surface 166 of the soft elastic part 16B, but they may be substantially coincident.

[0161] As shown in FIG. 27, the rigid elastic portion 16A of the elastic water stop member 16 is fitted into the groove portion, the lower portion of the soft elastic portion 16B of the elastic water stop member 16 is located within the groove portion, and the upper portion is located outside the groove portion (above the groove portion). In the state where the elastic water stop member 16 is fitted into the groove portion, the bottom surface of the elastic water stop member 16 (the bottom surface 160 of the rigid elastic portion 16A) is in contact with the bottom portion (the indoor side portion of the bottom surface 60), and the inner finding portion of the rigid elastic portion 16A is in contact with the first portion 640 of the inner finding surface (the indoor side finding surface 64) of the groove portion via the protrusion 1610. The outer finding portion 162 of the rigid elastic portion 16A is in close contact with the inner surface of the outer finding piece (the indoor side rising piece 62) via the protrusion piece 1620.

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

[0163] The inner finding portion of the rigid elastic portion 16A contacts the first portion 640 of the inner finding surface (the indoor side finding surface 64) of the groove portion via the protrusion 1610, so that a force in the direction of pressing the elastic water stop member 16 against the inner surface of the outer finding piece (the indoor side rising piece 62) acts. The first portion 1660 of the outer finding surface 166 is in a crushed state (1660´) and is in close contact with the inner surface of the outer finding piece (the indoor side rising piece 62). The protrusion piece 1620 of the rigid elastic portion 16A is in an elastically deformed state upward, and the tip side is in close contact with the inner surface of the outer finding piece (the indoor side rising piece 62).

[0164] In the state where the elastic water stop member 16 is fitted into the groove portion, the protrusion piece 1620 of the outer finding portion 162 of the rigid elastic portion 16A extends in an inclined manner so as to be separated from the bottom surface 160, and the tip side is in close contact with the inner surface of the outer finding piece (the indoor side rising piece 62). It protrudes against the direction in which the elastic water stop member 16β comes out of the groove portion, preventing the elastic water stop member 16 from coming out of the groove portion.

[0165] The inner finding surface 161 of the rigid elastic part 16A and the inner finding surface 165 of the soft elastic part 16B are flush. The inner finding surface 165 of the soft elastic part 16B is close to (separated and in a non-contact state in this embodiment) the second part 641 of the inner finding surface (indoor side finding surface 64) of the groove part in the non-vertical compression posture (Fig. 27). In the vertical compression posture, when the rigid elastic part 16A is pressed in the height direction, the inner finding surface 165 comes into close contact with the second part 641 (Fig. 28).

[0166] In the vertical compression posture of the elastic water stop member 16β, when the indoor lower surface 431 of the bottom panel body 4' is pressed against the upper surface 164 of the elastic water stop member 16β provided in the indoor groove part of the movable seat plate 6, a water stop structure is formed at the indoor side part between the lower end part of the bottom panel body 4' and the movable seat plate 6. Further, as shown in Fig. 28, in the vertical compression posture of the elastic water stop member 16β, when the elastic water stop member 16β is pressed in the height direction, the lower end part (the part adjacent to the first part 1660) of the second part 1661 of the outer finding surface 166 of the soft elastic part 16B comes into close contact with the leading edge (upper end edge) 620 of the outer finding piece (indoor side rising piece 62), and a water stop structure is formed.

[0167] As shown in Fig. 28, when the inner finding surface 165 of the soft elastic part 16B of the elastic water stop member 16β comes into close contact with the second part 641, the gap between the elastic water stop member 16β and the inner finding surface (indoor side finding surface 64) is blocked. Also, the bottom surface 160 of the elastic water stop member 16β and the indoor side part of the bottom surface 60 of the groove part are in close contact. However, even if water seeps in from the interface between the groove part and the elastic water stop member 16β, the lower end part (the part adjacent to the first part 1660) of the second part 1661 of the outer finding surface 166 of the soft elastic part 16B comes into close contact with the leading edge (upper end edge) 620 of the outer finding piece (indoor side rising piece 62), thereby preventing water from entering the indoor side.

[0168] The second part 1661 of the outer finding surface 166 bulges outward (as shown by 1661´) beyond the outer surface of the indoor-side rising piece 62. The bulging shape of the second part 1661 shown in Fig. 28 is an example, and it should be noted that depending on how the force is applied, etc., different bulging shapes can occur. As will be described later, in the vertical compression and horizontal compression states, the bulging second part 1661´ of the outer finding surface 166 comes into close contact with the watertight rubber member 55.

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

[0170] [D―3] Waterstop structure at the lower end of the shutter curtain in the fully closed position When the shutter curtain 1 in the fully closed position is in a vertically compressed state, a waterstop structure is formed between the lower end part of the bottom panel 4 (the movable seat plate 6 in this embodiment) and the floor surface. An elastic waterstop member 19 is provided across the entire width on the bottom surface 60 of the movable seat plate 6. As shown in Fig. 18, the elastic waterstop member 19 consists of end waterstop members 191 provided on the lower surfaces of both end parts of the bottom surface 60 of the movable seat plate 6 and two narrow intermediate waterstop members 190 provided on the lower surface of the intermediate part (in the width direction) of the bottom surface 60 and in close contact with the end waterstop members 191. The elastic waterstop member 19 is 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 and is located between the end water stop members 191 at both ends. The narrow intermediate water stop member 190 is fixed to the base elastic member 190'. The combined thickness of the intermediate water stop member 190 and the base elastic member 190' is substantially the same as the thickness of the end water stop member 191. However, in this embodiment, the lower surface of the narrow intermediate water stop member 190 bulges slightly downward in a cross-sectional view cut in the expected direction (see Fig. 22). In this embodiment, the base elastic member 190' is formed of a flame-retardant rubber (such as chloroprene rubber), and the end water stop member 191 and the intermediate water stop member 190 are formed of a flame-retardant rubber sponge (such as chloroprene rubber sponge) that is softer than the base elastic member 190'. However, these materials are examples and are not limited.

[0172] The end water stop members 191 at both ends and the base elastic member 190' have an expected dimension that is the same width as the expected dimension of the bottom surface 60 of the seat plate 6 (the expected dimension of the bottom panel body 4'). The two narrow intermediate water stop members 190 are both provided so as to fit within the expected dimension of the bottom surface 60 of the seat plate 6. Among the two intermediate water stop members 190, the intermediate water stop member 190 located on the outdoor side extends between the end water stop members 191 at both ends at a position away from the indoor side (inside) from the outdoor finding piece 61 of the movable seat plate 6. The intermediate water stop member 190 located on the indoor side extends between the end water stop members 191 at both ends at a position away from the outdoor side (inside) from the indoor rising piece 62 of the movable seat plate 6.

[0173] Since the intermediate water stop member 190 on the outdoor side is located inside the outdoor finding piece 61 of the movable seat plate 6, and the intermediate water stop member 190 on the indoor side is located inside the indoor rising piece 62 of the movable seat plate 6, in the fully closed posture of the shutter curtain 1, the intermediate water stop member 190 is not exposed to the outside, and in particular, the aesthetic feeling when viewed from the outdoor side can be improved.

[0174] Since the narrow intermediate water stop member 190 has a small contact area with the floor surface, when pressed from top to bottom with the same force (the self-weight of the panel in the normal fully closed position and the pressing pressure during vertical compression), compared with the wide water stop member, the surface pressure of pressing against the floor surface becomes larger, and it adheres to the floor surface with a greater force, thus improving the airtightness performance and waterproof performance.

[0175] When the shutter curtain 1 is in the fully closed position, the elastic water stop 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 lower frame or the tatami folding embedded in the floor surface FL. Also, the expected dimensions of the upper surface 90 are limited (see Fig. 31). Here, when the shutter curtain 1 is in the vertical compression state or the horizontal compression state, or when water pressure acts on the shutter curtain 1 from the outdoor side towards the indoor side, there is a possibility that the shutter curtain 1 may deform or displace towards the indoor side. At this time, although the elastic water stop member 19 will displace towards the indoor side with respect to the upper surface 90 of the lower frame, since the indoor intermediate water stop member 190 is located inside the indoor rising piece 62, even when the bottom panel 4 displaces towards the indoor side, the close contact state between the indoor intermediate water stop member 190 and the upper surface 90 of the lower frame is maintained (see Fig. 31).

[0176] As shown in Fig. 30, at least a part of the end water stop member 191 is located inside the guide body 5 in the fully closed position. The outdoor side part of the end water stop member 191 is substantially flush with the outdoor side finding piece 61 of the movable seat plate 6, and the indoor side part of the end water stop member 191 is substantially flush with the indoor rising piece 62 of the movable seat plate 6. As will be described later, in the vertical compression and horizontal compression states, the indoor side part of the end water stop member 191 and the indoor rising piece 62 of the movable seat plate 6 are in close contact with the watertight rubber member 55.

[0177] [D―4] Water stop structure at both ends in the width direction of the shutter curtain in the fully closed position As shown in FIGS. 5, 6, 29, and 30, the widthwise ends of the shutter curtain 1 (top panel 2, panel 3, bottom panel 4) in the fully closed position are received in the opening between the horizontal pressing member 82 on the outdoor side and the watertight rubber member 55 on the indoor side. The outdoor 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. By moving the chain up and down, each panel moves vertically up and down while the outdoor peripheral surface of the guide roller 11 of the support shaft 10 at both widthwise ends is guided by the guide member 53, and both widthwise ends are guided by the watertight rubber member 55, with the outdoor side surface and the indoor side surface of each panel contacting the fins 54 respectively. When the outdoor peripheral surface of the guide roller 11 contacts the guide member 53, the contact between the metal 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 in the fully closed position (vertical compression state) inward by the horizontal pressing member 82, the widthwise ends of the indoor side surfaces of the shutter curtain 1 (the indoor finding surfaces 21, 31, 41, the indoor rising pieces 62, the elastic waterstop members 16, 16β, and the end waterstop member 191 of the elastic waterstop member 19) are pressed against the watertight rubber member 55, obtaining a waterstop structure extending in the height direction at both widthwise ends of the shutter curtain (see FIGS. 7 and 30).

[0179] When the shutter curtain 1 in the fully closed position is in a vertical compression state, the portions (the second portion 1661 of the outer finding surface 166) of the elastic waterstop members 16 and 16β exposed on the indoor side bulge slightly inward (1661´) with respect to the indoor finding surfaces 21, 31, 41, and the indoor rising pieces 62 (see FIG. 7), increasing the degree of adhesion with the watertight rubber member 55. The indoor finding surface of the end waterstop member 191 at the widthwise end of the elastic waterstop member 19 is flush with the indoor finding surface 41 and the indoor rising piece 62 of the seat plate 6, and together with the indoor finding surface 41 and the indoor rising piece 62 of the seat plate 6, it adheres to the watertight rubber member 55.

[0180] [D-5] Watertight structure of the entire shutter curtain in a state of vertical compression and horizontal compression In the state of vertical compression of the shutter curtain, the elastic watertight member 16 closes the space between the vertically adjacent panels in the width direction in a watertight state, the elastic watertight member 16β closes the space between the bottom panel body 4' and the seat plate 6 in the width direction in a watertight state, and the elastic watertight member 19 closes the space between the lower end of the bottom panel 4 (the lower end of the seat plate 6) and the floor surface in a watertight state. When the shutter curtain 1 in the state of vertical compression is further compressed in the horizontal direction to be in a state of horizontal compression, the widthwise ends of the indoor side surface portions of the shutter curtain 1 (the indoor side finding surfaces 21, 31, 41, the indoor side rising pieces 62, the elastic watertight member 16, the elastic watertight member 16β, and the end watertight member 191 of the elastic watertight member 19) are pressed against the watertight rubber member 55 to close both ends in the opening width direction in a watertight state. When the shutter curtain is in a compressed state (a state of vertical compression and horizontal compression) in this way, the space between the upper and lower panels is closed in a watertight manner, and a watertight line is formed at three sides of the shutter device (both widthwise ends of the shutter curtain 1 located in the left and right guide bodies 5 and the lower end of the shutter curtain) to prevent water from entering the indoor side space.

[0181] [D-5] Watertight structure of the surface of the bottom panel body The waterproof panel shutter according to this embodiment is provided with an obstacle detection means comprising a movable seat plate 6 and a detection switch SW at the lower end portion of the bottom panel 4. When the movable seat plate 6 at the lower end of the bottom panel 4 comes into contact with a floor or an obstacle and the movable seat plate 6 moves upward relatively by a predetermined amount, the detection switch SW turns ON, and an obstacle detection signal is transmitted via a cord reel CR to the control unit of the opening / closing machine M so that the shutter curtain 1 descending stops. As shown in FIG. 1, an opening / closing machine M is provided at a position closer to one end side in the width direction in the shutter storage space above the opening, and a cord reel CR is arranged at the eaves portion above the opening at a position on the indoor side of the lifting / lowering path of the shutter curtain 1. The control unit of the cord reel CR and the opening / closing machine M are electrically connected. The cable C1 of the cord reel CR extends downward along the indoor side surface portion of the shutter curtain 1 when the shutter curtain 1 is lifted or lowered. The lower end side of the cable C1 is electrically connected to a relay cable C2 that penetrates a lower portion of the indoor side finding surface 41 of the bottom panel main body 4´. The relay cable C2 extends inside the bottom panel main body 4´ and is electrically connected to a cable C3 extending from the detection switch SW.

[0182] As shown in FIGS. 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 long lid portion 113 having an outer shape larger than a through hole formed in a lower portion of the indoor-side finding surface 41 of the bottom panel main body 4', and an insertion portion 114 inserted into the through hole. A hole portion 1130 is formed in the lid portion 113. On the proximal end side of the internal space of the insertion portion 14, a disk-shaped contact body (rubber bush) 115 that is larger than the hole portion 1130 and has substantially the same dimension as the inner diameter of the insertion portion 114 is provided so as to block the hole portion 1130 from the inside. The relay cable C2 is inserted through the contact body 115. A through portion of the relay cable C2 is formed from the hole portion 1130 of the lid portion 113 and the internal space of the insertion portion 114. The relay cable C2 extends into the bottom panel main body 4' through the internal space of the insertion portion 114. The first portion 110 is provided with a terminal 116 for electrically connecting to the cable C1, and the second portion 111 is provided with a terminal 117 for electrically connecting to the cable C3.

[0183] In the waterproof panel shutter according to the present embodiment, since a water stop line is formed at the indoor-side portion of the shutter curtain 1 in the fully closed position, it is allowed for water to enter the bottom panel main body 4'. It is necessary to prevent the water that has entered the bottom panel main body 4' from entering the indoor side through the through portion or the relay cable C2.

[0184] As shown in FIG. 32, a caulking material 118 is filled in the internal space of the insertion portion (the space surrounded by the wall surface of the insertion portion and the second surface of the contact body) so as to surround the relay cable C2. A waterproof treatment made of a rubber packing 119 is applied between the inner surface of the lid portion 113 and the indoor-side finding 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-side finding surface 41 by a screw (not shown) in a state where the lid portion 113 is in contact with the indoor-side finding surface 41 via the rubber packing 119. The rubber packing 119 prevents water from entering the outdoor side from the gap between the through-hole formed in the indoor-side finding surface 41 of the bottom panel main body 4' and the lid portion 113, and the caulking material 118 prevents water from entering the outdoor side along the relay cable C2. The first portion 110, the terminal 116, and the lid portion 113 of the relay cable holder 112 located on the indoor side of the relay cable C2 are accommodated inside a cover 121 detachably or removably attached to the indoor-side finding surface 41, and the cable C1 extends outside through a hole formed in the cover 121 (see FIG. 33).

[0185] [E]Airtight structure (smoke barrier structure) and joint structure (fireproof structure) The waterproof shutter according to the present embodiment can be used as a so-called management panel shutter, and functions as a fireproof and smoke-proof 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, and the plate thickness is, for example, 1.5 mm or more), and the seat plate 6 and the guide body 5 are also formed of steel plates (steel or stainless steel), and the fire resistance is improved. When the shutter curtain 1 is in the fully closed position, a joint structure is formed between the lower part of the upper panel and the upper part of the lower panel of the panels adjacent vertically. In addition, in order to function as a fireproof and smoke-proof shutter in the normal closed state, it has an airtight structure for preventing smoke and flames from entering the indoor side from the outdoor side during a fire. Further, the airtight structure according to the present embodiment can also prevent smoke and flames from being discharged from the indoor side to the outdoor side during a fire.

[0186] [E-1] Airtight structure between panels in a shutter curtain in a fully closed position When the shutter curtain 1 is in the 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 that 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 that of the upper end portion of the panel 3, the airtight structure between the panels of the shutter curtain 1 according to the present embodiment will be described based on the airtight structure of the panels 3 adjacent vertically to each other in the shutter curtain 1 in the fully closed position.

[0187] As shown in FIG. 14, an airtight member is continuously provided over the entire width of the panel at the lower end portion of the panel 3, including a buffer and airtight member 15, left and right end lower side airtight members 18 adhered to both ends in the length direction of the buffer and airtight member 15, and left and right end outdoor side airtight members 17 adhered to the outdoor side portions of the left and right end lower side airtight members 18.

[0188] As shown in FIG. 19, in the fully closed state of the shutter curtain 1, in a cross-sectional view of the middle portion in the width direction 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 outdoor-side finding surface 302 at the lower end portion of the upper panel 3 (the outdoor-side rising piece 303 is located at the step portion formed by the lower edge portion 301 and the outdoor-side finding 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 (in this embodiment, they are separated and in a non-contact state), 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 (in this embodiment, they are separated and in a non-contact state), the buffer and airtight member 15 provided on the central horizontal plane 332 of the lower surface portion 33 at the lower end portion of the upper panel 3 is in contact with the central horizontal plane 322 of the upper surface portion 32 at the upper end portion of the lower panel 3. However, at both end portions in the width direction of the panel 3, the end lower airtight member 18 at the lower end portion 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 portion of the lower panel 3, and the left and right end outdoor-side airtight members 17 are positioned outside the panel-width direction edge 3030 of the outdoor-side rising piece 303 (see FIG. 36). The outer surface of the end outdoor-side airtight member 17 is substantially flush with the main surface portion 300 of the outdoor-side finding surface 30 of the panel 3 and the outer surface of the outdoor-side rising piece 303 (in this embodiment, it is slightly located on the outdoor side) (see FIGS. 15 and 36).

[0189] [E―2] Airtight Structure between the Bottom Panel Body and the Seat Plate in the Fully Closed Position of the Shutter Curtain When the shutter curtain 1 is in the fully closed state, an airtight structure is formed between the bottom panel 4, specifically between the bottom panel body 4' and the movable seat plate 6. In this embodiment, the airtight structure is formed at the outdoor side portion of the bottom panel 4 of the shutter curtain 1 in the fully closed position. As shown in FIG. 23, on the outdoor side portion of the movable seat plate 6, a groove extending in the length direction of the movable seat plate 6 (the width direction of the bottom panel 4) is formed by the outdoor side portion of the bottom surface 60, the outdoor side rising piece 61, and the outdoor side finding surface 63, and an outdoor side elastic waterstop member 16α is fitted into the groove. When the shutter curtain 1 is in the fully closed position, the outdoor side lower surface 430 of the panel body 4' abuts against the upper surface of the outdoor side elastic waterstop member 16α, thereby forming an airtight structure across the entire width between the bottom panel body 4' and the movable seat plate 6.

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

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

[0192] As shown in FIGS. 5 and 34 to 36, a smoke barrier 56 is provided at the tip of the outdoor side bent piece 500 of the guide body 5 over the height direction. The smoke barrier 56 is configured to be in continuous contact over the height direction with both end portions in the panel width direction of the outdoor side surface portion of the shutter curtain 1 in the fully closed position (portions located outside the guide body 5). More specifically, both end portions in the panel width direction of the outdoor side surface portion of the shutter curtain 1 in the fully closed position are composed of the main surface portion 200 of the outdoor side finding surface 20 of the top panel 2 and the end outdoor side airtight member 17 attached to the lower outdoor side finding surface 202, the main surface portion 300 of the outdoor side finding surface 30 of the panel 3 and the end outdoor side airtight member 17 attached to the lower outdoor side finding surface 302, the outdoor side finding surface 40 of the bottom panel 4, the second portion 1661 (FIG. 23) which is the exposed surface of both end portions in 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 portion of the end water stop member 191 of the elastic water stop member 19. In one aspect, even when the shutter curtain 1 in the fully closed position is displaced indoors by horizontal compression, the contact between the smoke barrier 56 and both end portions in the panel width direction of the outdoor side surface portion of the shutter curtain 1 is maintained (see FIG. 6).

[0193] An upper smoke barrier 56' is provided over the opening width direction at the lintel portion 130 above the opening. The upper smoke barrier 56' is in contact with the outdoor side finding surface 20 of the top panel 2, and both end portions in the width direction are in contact with the upper end portions of the left and right smoke barriers 56. The lower ends of the left and right smoke barriers 56 are in contact with the floor surface FL. In the present embodiment, in plan view, the smoke barrier 56 is formed by making a fireproof sheet into a bag shape, the base end side is fixed to the tip of the outdoor side bent piece 500, and the curved tip is brought into contact with both end portions in the panel width direction of the outdoor side surface portion of the shutter curtain 1, but the specific configuration of the smoke barrier 56 is not limited.

[0194] [E-5] Airtight structure of shutter curtain in fully closed position (Another embodiment 1) Referring to FIG. 38, another embodiment of the airtight structure of the shutter curtain in the fully closed position will be described based on panel 3. In this embodiment, an outdoor airtight member 17α is provided along the lower end edge 301 over the entire width of the panel at the upper end portion of the lower outdoor finding surface (step finding surface) 302 of panel 3. 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 portion of the upper panel 3, and the outdoor gap between the lower end portion of the upper panel 3 and the upper end portion of the lower panel 3 is closed over the entire width of the panel. The outdoor portion of the outdoor airtight member 17α is substantially flush with the outdoor finding surface (main surface portion 300) and the outdoor rising piece 303 of panel 3. Both end portions in the width direction of the outdoor airtight member 17α are in contact with the left and right smoke shielding materials 56. In this embodiment, the outdoor 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 (Another Embodiment 2) Referring to FIG. 39, still another embodiment of the airtight structure of the shutter curtain in the fully closed position will be described based on panel 3. In this embodiment, no step finding surface is formed below the outdoor finding surface 30 of panel 3. A flat outdoor airtight member 17β is provided over the entire width of the panel on either the outdoor horizontal plane at the lower end portion of the upper panel 3 or the outdoor horizontal plane at the upper end portion of the lower panel 3. When the shutter curtain is fully closed, the outdoor airtight member 17β is in a pressed state between the outdoor horizontal plane at the lower end portion of the upper panel 3 and the outdoor horizontal plane at the upper end portion of the lower panel 3, and the outdoor gap between the lower end portion of the upper panel 3 and the upper end portion of the lower panel 3 is closed over the entire width of the panel. The outdoor portion of the outdoor airtight member 17β is substantially flush with the outdoor finding surface 30 of panel 3, and both end portions in the width direction of the outdoor airtight member 17β are in contact with the left and right smoke shielding materials 56. In this embodiment, the outdoor airtight member 17α and the buffer airtight member 15 are independent of each other.

[0196] [E-7] Structure of the Gap between Panels in a Shutter Curtain in the Fully Closed Position In this embodiment, in the panels adjacent above and below the shutter curtain 1 in the fully closed position, a water stop 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 sliver structure is formed on the outdoor side of the water stop structure between the lower part of the upper panel and the upper part of the lower panel. The sliver structure between the panels adjacent above and below the shutter curtain 1 according to this embodiment will be described based on the fitting of the panels 3 adjacent above and below in the shutter curtain 1 in the fully closed position. The lower surface portion 33 of the upper panel 3 includes an outdoor lower surface (outdoor horizontal plane) 330, an outdoor inclined surface 331, a central horizontal plane 332, a side view pedestal-shaped portion composed of an indoor inclined surface 333, and an indoor side portion (indoor vertical surface 334, indoor lower surface 335). The upper surface portion 32 of the lower panel 3 includes an outdoor upper surface (outdoor horizontal plane) 320, an outdoor inclined surface 321, a central horizontal plane 322, a side view pedestal-shaped portion composed of an indoor inclined surface 323, and an indoor side portion (indoor vertical surface 324, indoor 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 are fitted with the pedestal-shaped portion (outdoor inclined surface 331, central horizontal plane 332, indoor inclined surface 333) of the lower surface portion 33 of the upper panel 3 and the pedestal-shaped portion (outdoor inclined surface 321, central horizontal plane 322, indoor inclined surface 323) of the upper surface portion 32 of the lower panel 3 to form a sliver structure. In this embodiment, further, the outdoor rising piece 303 of the lower panel 3 is close to and faces the lower outdoor finding surface 302 of the upper panel 3 to form a sliver structure. In this embodiment, due to the synergistic effect of the airtight structure and the sliver structure, the fire prevention and smoke prevention performance is improved.

[0197] [E-8] Operation as a fire shutter The waterproof shutter according to this embodiment is an electric shutter, and during normal operation, it descends electrically to close the opening. In the fully closed state of the opening, as described above, an airtight structure (smoke barrier structure) is formed in the outdoor side part, and a fire-preventive rabbet structure (fireproof structure) is formed between the panels adjacent vertically. In the fully closed state (uncompressed state) of the opening, the shutter curtain 1 in the fully closed position is compressed vertically by a vertical compression mechanism, and the shutter curtain 1 in the fully closed position in the vertically compressed state is compressed horizontally by a horizontal compression mechanism, so that the shutter curtain 1 in the fully closed position is in a vertically and horizontally compressed state. Even in this state, the airtight structure (smoke barrier structure) is maintained (see Fig. 6), and the rabbet structure (fireproof structure) is maintained (see Fig. 20).

[0198] The waterproof shutter according to this embodiment is provided with a self-weight descent mechanism for causing the shutter curtain 1 in the fully open state to descend by its own weight during a fire or the like. More specifically, as shown in Fig. 40, the waterproof shutter includes an automatic closing device that operates in response to the input of a fire detection signal, and an operating mechanism that releases and returns the brake of the opening and closing machine M. When the automatic closing mechanism operates, the operating mechanism assumes a brake release position, releases the brake, and causes the shutter curtain to descend by its own weight. The shutter curtain descends 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 self-weight descent, an obstacle detection signal is transmitted to the operating mechanism. In response to the input of the obstacle detection signal, the operating mechanism assumes a brake return position, the brake returns, and the shutter curtain during self-weight descent stops. When the obstacle is removed, the input of the obstacle detection signal disappears, the operating mechanism again assumes a brake release position, the brake is released, and the shutter curtain descends again by its own weight. The shutter curtain descends to the fully closed position and stops in the fully closed position.

[0199] The pressing operation after the shutter curtain has assumed the fully closed position due to self-weight lowering will be described. In the first embodiment, depending on the presence or absence of a fire detection signal, it is determined whether the shutter curtain in the fully closed position is due to self-weight lowering or electric lowering. When the fire detection signal is "present", it is judged that the shutter curtain has assumed the fully closed position due to self-weight lowering, the transmission of a pressing signal from the pressing button is invalidated, and the pressing operation is restricted.

[0200] In the second embodiment, the pressing operation is possible regardless of whether the shutter curtain in the fully closed position is due to self-weight lowering or electric lowering. When a vertical pressing signal is transmitted from the pressing button to the vertical pressing mechanism, vertical pressing of the shutter curtain in the fully closed position is executed by the vertical pressing mechanism. When a horizontal pressing signal is transmitted from the pressing button to the horizontal pressing mechanism, vertical pressing of the shutter curtain in the fully closed position is executed by the horizontal pressing mechanism.

Explanation of Signs

[0201] 1 Shutter curtain 2 Top panel 20 Outdoor side finding surface 200 Main surface 202 Lower outdoor side finding surface (step finding surface) 21 Indoor side finding surface 22 Upper surface part 221 Compressed concave part (compressed part) 23 Lower surface part 230 Outdoor side lower surface 231 Outdoor side inclined surface 232 Central horizontal plane 233 Indoor side inclined surface 234 Indoor side vertical surface 235 Indoor side lower surface (pressing part) 25´ Upper side horizontal reinforcing member 25 Intermediate horizontal reinforcing member 26 Lower side horizontal reinforcing member 27 First vertical reinforcing member 28 Second vertical reinforcing member 29 Third vertical reinforcing member 3 Intermediate panel (panel) 30 Outdoor side finding surface 300 Main surface 302 Lower outdoor side finding surface (step finding surface) 303 Outdoor side rising piece (protruding piece) 31 Indoor side finding surface 310 Indoor side rising piece (outer finding piece of groove part, protruding piece) 32 Upper surface part 320 Outdoor side upper surface (outdoor side horizontal plane) 321 Outdoor side inclined plane 322 Central horizontal plane 323 Indoor side inclined plane 324 Indoor side vertical surface (inner finding surface, stepped indoor side finding surface) 3240 First part (groove part) 3241 Second part 325 Indoor side lower surface (bottom of groove part) 33 Lower surface part 330 Outdoor side lower surface (outdoor side horizontal plane) 331 Outdoor side inclined plane 332 Central horizontal plane 333 Indoor side inclined plane 334 Indoor side vertical surface 335 Indoor side lower surface (pressing part) 35 Intermediate horizontal reinforcement 36 Lower side horizontal reinforcement 37 First vertical reinforcement 38 Second vertical reinforcement 39 Third vertical reinforcement 4 Bottom panel 4´ Bottom panel body 40 Outdoor side finding surface 400 Outdoor side rising piece (protruding piece) 41 Indoor side finding surface 410 Indoor side rising piece (outer finding piece of groove part, protruding piece) 42 Upper surface part 420 Outdoor side upper surface 421 Outdoor side inclined plane 422 Central horizontal plane 423 Indoor side inclined plane 424 Indoor side vertical surface (inner finding surface, stepped indoor side finding surface) 425 Inner bottom surface (bottom of the groove part) 43 Bottom surface part 430 Outer bottom surface (bottom surface of the panel body) 431 Inner bottom surface (bottom surface of the panel body) 47 First vertical reinforcing member 48 Second vertical reinforcing member 45 Intermediate horizontal reinforcing member 46 Lower horizontal reinforcing member 5 Guide body 55 Watertight rubber member (elastic member) 56 Smoke barrier material 56´ Upper smoke barrier material 6 Movable seat plate 60 Bottom surface (inner side part is the bottom of the groove part) 61 Outer rising piece (outer side part of the seat plate) 62 Inner rising piece (outer finding piece, protruding piece of the groove part) 620 Tip edge (upper edge) 63 Outer finding surface 64 Inner finding surface (inner finding surface) 640 First part (groove part) 641 Second part 7 Vertical compression mechanism 8 Horizontal compression mechanism 15 Buffer and airtight member (first airtight member) 16 Elastic waterstop member 16A Hard elastic part 16B Soft elastic part 160 Bottom surface 161 Inner finding surface (inner finding part) 1610 Ridge 162 Outer finding part 1620 Protruding piece 163 Connection surface (first connection surface) 1630 First horizontal plane 1631 First inclined plane 164 Contact surface 165 Inner finding surface 166 Outer finding surface 1660 First part 1660´ State where the first part is crushed 1661 Second part 1661´ Second part in a bulged state 167 Connection surface (second connection surface) 1670 Second horizontal plane 1671 Second inclined plane 16α Elastic waterstop member (elastic airtight member) 16β Elastic waterstop member 17 End outdoor side airtight member (second airtight member) 18 End lower side airtight member (third airtight member) 19 Elastic waterstop member 190 Intermediate waterstop member 191 End waterstop member (lower end airtight member) SW Detection switch (obstacle detection switch) CR Cable reel C1 Cable of the cable reel C2 Relay cable C3 Cable extending from the detection switch 112 Relay cable holder 113 Cover part 1130 Hole part (part of the second insertion part) 114 Insertion part 118 Caulking material (second waterproof treatment) 119 Rubber packing (first waterproof treatment) 121 Cover

Claims

1. A shutter curtain composed of a plurality of steel panels, left and right guide bodies for receiving the widthwise end portions of the shutter curtain, vertical pressing means for putting the shutter curtain in a fully closed position in a vertically compressed state, an opening / closing machine for electrically opening and closing the shutter curtain, an automatic closing device that operates upon input of a fire detection signal and causes the shutter curtain to descend by its own weight, obstacle detection means composed of a movable seat plate, In a waterproof panel shutter provided with In the panels adjacent above and below the shutter curtain in the fully closed position, a water stop structure is formed between the indoor side portion of the lower side portion of the upper panel located above and the indoor side portion of the upper side portion of the lower panel located below, An aijyakuri structure is formed on the outdoor side of the water stop structure between the lower side portion of the upper panel and the upper side portion of the lower panel, In response to the input of an obstacle detection signal by the obstacle detection means, the descent of the shutter curtain during electric descent or descent by its own weight stops, In response to the disappearance of the obstacle detection signal by the obstacle detection means, the shutter curtain that has stopped during descent by its own weight descends again by its own weight, It is determined whether the shutter curtain descends electrically or by its own weight based on the presence or absence of a fire detection signal, and in the shutter curtain that has descended by its own weight to the fully closed position, the vertical pressing operation by the vertical pressing means is restricted, A waterproof shutter.

2. The lower side portion of the upper panel of the panels adjacent above and below has a concave portion, and the upper side portion of the lower panel has a convex portion, The aijyakuri structure is formed by the fitting of the concave portion and the convex portion, The waterproof shutter according to Claim 1.

3. The waterproof shutter is provided with horizontal pressing means for putting the vertically compressed shutter curtain in a horizontally compressed state, The waterproof shutter according to any one of Claims 1 and 2.

4. An elastic water stop member is provided over the entire width of the panel on at least one of the indoor side portion of the lower side portion of the upper panel and the indoor side portion of the upper side portion of the lower panel, The aijyakuri structure allows the pressing of the elastic water stop member by the vertical pressing means, The waterproof shutter according to any one of Claims 1 to 3.

5. At least one of the lower part of the upper panel and the upper part of the lower panel that form the uneven structure is provided with a buffer material extending in the panel width direction. When vertically compressing by the vertical compression means, the buffer material and the elastic water stop member are simultaneously pressed. The waterproof shutter according to claim 4.

6. In the fully closed position and non-compressed state of the shutter curtain, a fireproof structure is formed by the uneven structure formed between the steel panels adjacent vertically. In the fully closed position and compressed state of the shutter curtain, the fireproof structure is maintained. The waterproof shutter according to any one of claims 1 to 5.

7. In the fully closed position and non-compressed state of the shutter curtain, a smoke shielding structure is formed at the outdoor side part of the shutter curtain. In the fully closed position and compressed state of the shutter curtain, the smoke shielding structure is maintained. The waterproof shutter according to any one of claims 1 to 6.

8. A shutter curtain composed of a plurality of steel panels, Left and right guide bodies for receiving the width direction ends of the shutter curtain, Vertical compression means for making the shutter curtain in the fully closed position in a vertically compressed state, An opening and closing machine for electrically opening and closing the shutter curtain, An automatic closing device that operates by input of a fire detection signal and causes the shutter curtain to fall by its own weight, Obstacle detection means composed of a movable seat plate, In a waterproof panel shutter provided with In the panels adjacent vertically of the shutter curtain in the fully closed position, a water stop structure is formed between the indoor side part of the lower part of the upper panel located on the upper side and the indoor side part of the upper part of the lower panel located on the lower side. Between the lower part of the upper panel and the upper part of the lower panel, an uneven structure is formed on the outdoor side of the water stop structure. In response to the input of an obstacle detection signal by the obstacle detection means, the descent of the shutter curtain during electric descent or descent by its own weight stops. In response to the disappearance of the obstacle detection signal by the obstacle detection means, the shutter curtain that has stopped during descent by its own weight descends again by its own weight. In the shutter curtain that has descended by its own weight and is in the fully closed position, the vertical compression operation by the vertical compression means is possible. Waterproof shutter.

9. A shutter curtain composed of a plurality of steel panels, Left and right guide bodies for receiving the widthwise end portions of the shutter curtain, An obstacle detection means comprising a movable seat plate, In a waterproof panel shutter provided with In the panels adjacent above and below the shutter curtain in the fully closed position, a water stop structure is formed between the indoor side portion of the lower side portion of the upper panel located on the upper side and the indoor side portion of the upper side portion of the lower panel located on the lower side. An ambiguous structure is formed on the outdoor side of the water stop structure between the lower side portion of the upper panel and the upper side portion of the lower panel. The water stop line of the waterproof panel shutter is located at the indoor side portion of the shutter curtain in the fully closed position, and water intrusion into the panel interior is allowed. The bottom panel of the shutter curtain is provided with an obstacle detection switch, and the obstacle detection signal is transmitted outside the bottom panel through a relay body that passes through an insertion portion formed on the indoor side finding surface of the bottom panel from inside the bottom panel. The insertion portion is waterproofed. Waterproof shutter.

10. The relay body is a relay cable. The terminal located inside the bottom panel of the relay cable is adapted to receive an obstacle detection signal from the obstacle detection switch. A cable extending along the outdoor side finding surface of the shutter curtain from a cord reel is electrically connected to the terminal located outside the bottom panel of the relay cable. The waterproof shutter according to claim 9.

11. The relay cable is provided with a relay cable holder having an insertion portion and a lid portion. The insertion portion of the relay body consists of a first insertion portion into which the insertion portion of the relay cable is fitted, and a second insertion portion formed in the lid portion and the insertion portion for inserting the relay cable. By applying a first waterproof treatment to the gap between the lid portion and the indoor side finding surface of the bottom panel, the first insertion portion is blocked. By applying a second waterproof treatment to the gap between the second insertion portion and the relay cable, the second insertion portion is blocked. The waterproof shutter according to claim 10.

12. A cover is provided on the indoor side finding surface of the bottom panel so as to cover the portion of the relay cable located outside the bottom panel. The waterproof shutter according to any one of claims 10 and 11.

Images