Waterproof shutter

Abstract

To provide a waterproof shutter which includes a characteristic in a fitting structure of panels, in a steel panel.SOLUTION: A lower end portion of an upper side panel of panels 3 adjacent to each other vertically is a concave shape including a trapezoidal shape in a side view part, and an upper end portion of a lower side panel is a convex shape including a trapezoidal shape in a side view part. In the case where, when a lower side portion of the upper side panel and an upper side portion of the lower side panel are approaching the height direction, one panel is deviated in the outer direction indoors with respect to the other panel, at least one inclined surface out of an outdoor side inclined surface 331 of the lower side portion, an outdoor side inclined surface 321 of the upper side portion, and an indoor side inclined surface 323 of the upper side portion becomes a guide surface, and at the time of shutter curtain fully closed posture, in the lower side portion and the upper side portion, the trapezoidal shape parts are fitted with each other, outdoor side hanging surfaces 330, 320 come close to each other or come into contact with each other, and an outdoor side lower surface 335 of the lower side portion comes into contact with an elastic water cut-off member 16 provided on the indoor side of the upper side portion.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 flooding accidents have occurred in subway stations and building basements. There are cases where it is desired to install at the entrance of buildings etc. in case of emergency to prevent external water from flooding into the building. Also, there are cases where it is desired to close the building opening in a water-stopped state to prevent flooding inside, not only during guerrilla heavy rains.

[0003] As exemplified in Patent Document 1, a waterproof panel shutter for closing a building opening in a water-stopped state has been proposed. In the waterproof panel shutter, in the fully closed state of the opening, the upper panel, the lower end part, and the upper end part of the lower panel are fitted together, and an elastic water-stopping member extending in the panel width direction is provided therebetween to form a water-stopping structure by closing the gap between the upper and lower panels.

[0004] When it is desired to make such a waterproof shutter function as a fire and smoke shutter, it is necessary to adopt a steel panel instead of an aluminum panel. However, since the steel panel is manufactured by welding together steel plate surface materials formed into a predetermined shape, it generally has a drawback that it is difficult to achieve high precision compared to an aluminum panel formed of an aluminum extrusion material. Therefore, it is necessary to adopt a fitting structure that can suppress rattling between panels due to accuracy errors etc.

Patent Document 1

Disclosure of the Invention

Problems to be Solved by the Invention

[0005] An object of the present invention is to provide a waterproof shutter having a characteristic fitting configuration between panels in a steel panel.

Means for Solving the Problem

[0006] The technical means adopted by the present invention are a shutter curtain composed of a plurality of panels, left and right guide bodies for receiving the widthwise end portions of the shutter curtain, in a waterproof shutter provided with the lower part of the upper panel of the panels adjacent vertically is concave, and the upper part of the lower panel is convex, the lower part includes an outdoor-side horizontal plane, a side-view pedestal-shaped part composed of an outdoor-side inclined plane, a central horizontal plane, and an indoor-side inclined plane, and an indoor-side part, the upper part includes an outdoor-side horizontal plane, a side-view pedestal-shaped part composed of an outdoor-side inclined plane, a central horizontal plane, and an indoor-side inclined plane, and an indoor-side part, at least one of the indoor-side part of the lower part and the indoor-side part of the upper part is provided with an elastic water-stop member extending across the entire width of the panel, when the shutter curtain is in the fully closed position, the lower part and the upper part are such that the pedestal-shaped parts fit together, and the elastic water-stop member closes the space between the indoor-side part of the lower part and the indoor-side part of the upper part, which is a waterproof shutter. In one aspect, the indoor-side part of the lower part consists of an indoor-side vertical surface and an indoor-side horizontal plane provided at the lower end of the indoor-side vertical surface, the indoor-side part of the upper part consists of an indoor-side vertical surface, a groove part provided below the indoor-side vertical surface, and the elastic water-stop member provided in the groove part, when the shutter curtain is in the fully closed position, the indoor-side horizontal plane of the lower part abuts against the elastic water-stop member of the upper part, and the indoor-side vertical surfaces are close to or in contact with each other thereby.

[0007] In one aspect, at least one of the central horizontal plane of the pedestal-shaped part of the upper part and the central horizontal plane of the pedestal-shaped part of the lower part is provided with a buffer member extending in the panel width direction, When the shutter curtain is in the fully closed position, the cushioning material is sandwiched between the central horizontal planes of the upper and lower trapezoidal portions. In one aspect, the waterproof shutter includes vertical pressing means for vertically pressing the shutter curtain in the fully closed position. During vertical pressing, a vertical pressing force is transmitted to the lower panel through the cushioning material and the elastic water stop member that are pressed between the lower portion and the upper portion. In one aspect, when the shutter curtain is in the fully closed position, the outdoor horizontal planes are close to or in contact with each other. During vertical pressing, the outdoor horizontal plane of the lower portion contacts the outdoor horizontal plane of the upper portion and presses downward, thereby transmitting a vertical pressing force to the lower panel.

[0008] In one aspect, when the lower portion and the upper portion approach each other in the height direction, if the upper panel is displaced inward with respect to the lower panel, the outdoor inclined surface of the lower portion and the outdoor inclined surface of the upper portion serve as guide surfaces to form a fitting state.

[0009] In one aspect, when the lower portion and the upper portion approach each other in the height direction, the indoor vertical surface of the lower portion is guided by the indoor vertical surface of the upper portion to form a fitting state.

[0010] In one aspect, when the lower portion and the upper portion approach each other in the height direction, if the upper panel is displaced outward with respect to the lower panel, the indoor inclined surface of the upper portion serves as a guide surface.

[0011] In one aspect, a stepped outdoor stepped finding surface located indoors with respect to the outdoor finding surface of the upper panel is formed on the outdoor side of the lower portion. On the outdoor side of the upper portion, an outdoor rising piece flush with the outdoor finding surface of the lower panel is formed. When the lower part and the upper part approach each other in the height direction, the outdoor step finding surface becomes a guide surface, and when the shutter curtain is in the fully closed position, the outdoor rising piece is positioned on the outdoor side of the outdoor step finding surface. In one aspect, when the lower part and the upper part approach each other in the height direction, the movement of the upper panel toward the outdoor side with respect to the lower panel is restricted by the outdoor step finding surface abutting against the outdoor rising piece.

[0012] In one aspect, the waterproof shutter includes horizontal pressing means for horizontally pressing the shutter curtain in the fully closed position from the outdoor side toward the indoor side. The guide body is provided with an elastic member against which the indoor finding surface of the shutter curtain is pressed in the height direction during horizontal pressing. The maximum movement amount of the upper panel toward the indoor side with respect to the lower panel is restricted by the indoor finding surface of the lower panel abutting against the elastic member. In one aspect, the maximum movement amount of the upper panel toward the outdoor side with respect to the lower panel is restricted by the guide rollers of each panel abutting against the guide member.

Advantages of the Invention

[0013] In the present invention, when the shutter curtain is in the fully closed position, the lower part of the upper panel and the upper part of the lower panel are such that the trapezoidal parts are fitted together, the outdoor vertical surfaces are close to or in contact with each other, and the indoor lower surface of the upper panel abuts against the elastic waterstop member provided on the indoor side of the lower panel. Therefore, dimensional errors and the like during the fitting of the lower part and the upper part can be absorbed by the trapezoidal parts, and rattling can be suppressed. Also, when the shutter curtain is in the fully closed position and a cushioning material is sandwiched between the central horizontal planes of the upper and lower trapezoidal parts, the rattling in the fitting structure of the upper and lower panels can be suppressed by the cushioning material, and by the upper and lower panels being in close contact via the cushioning material, the vertical pressing force can be favorably transmitted to the lower panel via the cushioning material.

Brief Description of the Drawings

[0014]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Figure 9

Figure 10

Figure 10A

Figure 11

Figure 11A

Figure 12

Figure 13

Figure 14

Figure 15

Figure 16

Figure 17

Figure 17A

Figure 18

Figure 19

Figure 20

Figure 21

Figure 22

Figure 23

Figure 24

Figure 25

Figure 26

Figure 27

Figure 28

Figure 29

Figure 30

Figure 31

Figure 32

Figure 33

Figure 34

Figure 35

Figure 36

Figure 37

Figure 38

Figure 39

Figure 40

Mode 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 composed of 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") connected 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 configuration 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, the terms "outdoor side" and "indoor side" are used not only to indicate the positions on the "outdoor side" and "indoor side" sandwiching the opening opened and closed by the shutter curtain 1, but also to represent the relative positions of the parts of the members.

[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 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] At both ends in the width direction of the building opening, left and right guide bodies 5 are erected, and are configured 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 a first side wall 50 on the outdoor side and a second side wall 51 on the indoor side that face each other with a space therebetween, and a bottom wall 52, and extends in the opening height direction. Outdoor side bent pieces 500 and indoor side bent pieces 510 are formed at the tip sides of the first side wall 50 on the outdoor side and the second side wall 51 on the indoor side 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. A guide member 53, which is a long member extending vertically in the height direction, is provided on the bottom wall 52 of the guide body 5 and is configured to contact and guide the outdoor side peripheral surface of the guide roller 11. Long fin-shaped members 54 (for example, made of nylon) extending in the height direction are formed outside the outdoor side bent piece 500 and the indoor side bent piece 510 at the tip sides of the first side wall 50 on the outdoor side and the second side wall 51 on the indoor side, respectively. 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 such that the guide roller 11 can contact it 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 that extends gently downward in an inclined manner from the front (outdoor side) toward the rear (indoor side). By lifting the chain, the panels 2 and 3 are fed successively 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 the panels 2, 3, and 4 are held and stored in a state of hanging vertically 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 state where the opening is fully closed, when the release switch (not shown) is pressed and the sprocket 12 is rotationally driven in the chain hoisting direction by the opening / closing machine M, the shutter curtain 1 in the vertical posture in the fully closed state rises as the chain rises, while both end portions in the width direction are guided by the vertical guide bodies 5, and 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 stored in parallel in the storage space, and the opening is opened.

[0020] In the state where the opening is fully open, when the closing switch (not shown) is pressed and the sprocket 12 is rotationally driven in the chain payout direction by the opening / closing machine M, 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 while the guide rollers 11 at both end portions in the width direction are guided by the storage rail 13, and when passing through the sprocket 12, they are vertically aligned with each other in the height direction and descend while being guided by the guide body 5, 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) 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, the shutter curtain 1 continues to descend a predetermined distance, so that in any two adjacent panels vertically, the upper end portion of the lower panel and the lower end portion of the upper panel are at least partially in contact with each other to be in the fully closed state (see the middle 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'. The 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 landing 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 posture (landed on the floor surface FL), and the descent of the shutter curtain 1 is stopped without performing reverse rising. Further, the transmission of the obstacle detection signal is not limited to the wired type and may be a wireless type (for example, wireless transmission by radio waves).

[0023] A photoelectric sensor 14, which is exemplified as the second obstacle detection means, is provided at a predetermined height from the floor surface at the lower part 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 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 reversely 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 known to those skilled in the art, and further detailed description will be omitted. Also, it should be noted that there are many variations and improvements of the panel shutter known to those skilled in the art, and 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 vertically compressed by the vertical compression mechanism 7 horizontally toward the indoor side. Hereinafter, the configuration and operation of the vertical compression mechanism 7 and the horizontal compression mechanism 8 will be described. For further details of the configuration of the waterproof shutter, reference can be made to Patent Document 1.

[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 contacting and pressing against the upper end of the uppermost 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 the upper end of the uppermost top panel 2 and pressing downward, 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 a vertically compressed state, an elastic water stop member (in this embodiment, the elastic water stop 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 water stop structure is formed. Between the panel body 4' of the bottom panel 4 and the movable seat plate 6, an elastic water stop member (in this embodiment, the indoor-side elastic water stop member 16β) that extends across the entire width of the panel is pressed, and a water stop structure is formed. Between the movable seat plate 6 and the floor surface FL, an elastic water stop member (in this embodiment, the elastic water stop member 19) that extends across the entire width of the panel is pressed, and a water stop 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 close to the left and right guide bodies 5 side respectively, and the interval between the central vertical compression mechanism 7 and the left vertical compression mechanism 7, and the interval between the central vertical compression mechanism 7 and the right vertical compression mechanism 7 are the same. The number of the 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 offset to the outdoor side with respect to the lifting paths of the panels 2, 3, and 4 so as not to hinder 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-sectional shape 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 waterstop 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, the horizontal pressing member 82 includes a first member (outdoor side member) 820 that extends in the indoor-outdoor direction along the outdoor side bending piece 500 in a plan view and has a U-shaped cross section and is long and extends vertically along the guide body 5, a second member (indoor side member) 821 that extends in the indoor-outdoor direction along the outdoor side bending piece 500 in a plan view and has a U-shaped cross section and is long and extends vertically along the guide body 5, and an operating rod 822. The operating rod 822 is a long member that extends vertically along the guide body 5. 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 operation of the piston rod 81. In conjunction with the upward movement of the operating rod 822, the second member 821 moves horizontally inward, and the outdoor side surface portion of the shutter curtain 1 is pressed by the pressing surface 8210 and is configured to be in pressure contact with 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, the 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 a horizontal pressing state detection means. 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 such that after the shutter curtain 1 in the fully closed posture is in a water-stopping state (vertical compression and horizontal compression), the central column 9 is moved from the storage position to the installation position and installed 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 addition, in an emergency such as when heavy rain is 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 an 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 provided 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 inputs from these buttons. More specifically, in accordance with the instructions from the button inputs, the opening / closing machine M (the raising 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 the present 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 vertically compressed 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 horizontally compressed state.

[0039] When the shutter is in the compression release state (vertically compressed release state and horizontally compressed 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 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 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 raised 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 made based on the vertical position of the panel.

[0044] [C-1] Top panel [C-1-1] Outer shape of the top panel With reference 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 (expected dimensions) extending in the opening width direction, and includes an outdoor-facing surface 20, an indoor-facing 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-facing surface 20 of the top panel 2 is formed in a stepped shape recessed toward the indoor-facing surface 21 side. Specifically, the outdoor-facing 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-facing surface (step-facing surface) 202 that is displaced and hangs toward the indoor-facing surface 21 side with respect to the vertically positioned main surface portion 200. The upper end of the outdoor-facing surface 20 and the upper end of the indoor-facing surface 21 are at substantially the same height, and the lower end of the indoor-facing surface 21 extends downward beyond the lower end of the outdoor-facing surface 20 (including the lower outdoor-facing surface 202).

[0046] 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 the present embodiment, the main surface portion 200 of the outdoor finding surface 20 of the top panel 2 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 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, and bent pieces are integrally formed at the upper and lower ends of the second surface material, respectively. 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 from an 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 has 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 short horizontal reinforcing members with respect to 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 rising piece may be used to form a U-shape. 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, including 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 a hanging piece. The horizontal plane 260 has an expected dimension corresponding to the dimension between the inner surfaces of the first surface member forming the main surface portion 200 of the outdoor side finding surface 20 and the second surface member 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 member and the second surface member. 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 member (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 member 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 260 of the lower horizontal reinforcing member 26.

[0059] [C―1―4] Vertical Reinforcing Member of 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 directly below the bottom surface 223 of the recess 221 of 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 directly below the first vertical reinforcing member 27. Between the lower horizontal reinforcing member 26 and the third surface member and the fourth surface member forming the lower end portion, a third vertical reinforcing member 29 is provided directly 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 hat-shaped cross-sectional view, and the outdoor finding surface 270, the pair of expected surfaces 271, and the pair of indoor finding pieces 272 extend perpendicularly to 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 part 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. 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).

[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 finding surface 280, a pair of expected surfaces 281 extending inward from both ends in the width direction (finding direction) of the outdoor finding surface, and a pair of indoor finding pieces 282 extending in the finding direction so as to be spaced apart from each other from the indoor ends of the pair of expected surfaces 281. The outdoor finding surface 280, the pair of expected surfaces 281, and the pair of indoor finding pieces 282 extend perpendicularly to 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 finding surface 20 and the second surface material forming the indoor finding surface 21. The second vertical reinforcing member 28 is connected (welded) with the outdoor finding surface 280 abutting against the inner surface of the outdoor finding surface 20 and the indoor finding piece 282 abutting against the inner surface of the indoor finding 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 with an interval therebetween vertically.

[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 a portion (including at least the horizontal plane) of the third and fourth surface members forming the lower end portion. Further, it has an expected 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 expected 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 expected surfaces 291. The outdoor-side finding surface 290, the pair of expected surfaces 291, and the pair of indoor-side finding pieces 292 extend perpendicularly in the height direction of the top panel 2.

[0068] The expected surface 291 of the third vertical reinforcing member 29 has an expected dimension corresponding to the dimension between a 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 the outdoor-side finding surface 290 abutting against the inner surface of the third surface member forming the lower outdoor-side finding surface 202 and the 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 expected 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 expected 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 side finding surface 30, an indoor side finding 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 side finding surface 30 is formed in a stepped shape recessed toward the indoor side finding surface 31 side. Specifically, the outdoor side finding 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 side finding surface (step finding surface) 302 that is displaced and hangs downward toward the indoor side finding surface 31 with respect to the main surface portion 300 in a vertical posture.

[0071] The upper surface portion 32 of panel 3 is formed from a horizontal outdoor side upper surface 320, an outdoor side inclined surface 321 that extends indoors and upward from the indoor side portion of the outdoor side upper surface 320, a central horizontal plane 322 that extends horizontally indoors from the indoor side portion of the outdoor side inclined surface 321, an indoor side inclined surface 323 that extends indoors and downward from the indoor side portion of the central horizontal plane 322, an indoor side vertical surface 324 that hangs down from the indoor side portion of the indoor side inclined surface 323, and an indoor side lower surface 325 that extends horizontally indoors from the lower end of the indoor side vertical surface 324. A table-shaped portion is formed from the outdoor side inclined surface 321, the central horizontal plane 322, and the indoor side 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 up 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 up 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 inward and upward from the indoor side portion of the outdoor side lower surface 330, a central horizontal surface 332 that extends horizontally inward from the indoor side portion of the outdoor side inclined surface 331, an indoor side inclined surface 333 that extends inward 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 inward 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 up vertically flush with the main surface part 300 of the outdoor side finding surface 30, and an indoor side rising piece 310 that stands up 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 consisting 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 buffer and airtight member 15 having a two-layer structure 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, so 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 of the lower end of the main surface portion 300 of the outdoor side finding surface 30, and in a state where it 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, but 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, an end lower side airtight member 18 is provided so as to connect between the end outdoor side airtight member 17 and the buffer / airtight member 15. The end lower side 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 end portions 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 end lower side 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 end lower side 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) having a high hardness and a second layer 181 made of a flame-retardant foam (made of EPDM foam or the like and mainly functioning as an airtight material) having a low hardness, but the material is not limited. In the present embodiment, the end lower side airtight member 18 having a two-layer structure is shown, but it is not limited thereto, and the end lower side 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 / airtight member 15, the left and right end lower side airtight members 18 adhered to both ends in the length direction of the buffer / 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 end lower side 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 end lower side airtight member 18 is provided at the lower end portion of the panel 3, but the end lower side 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 end lower side 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 forms 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 forms 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, and 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, and 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 a drainage opening 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 a cross-sectional view, 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 end portions 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 a cross-sectional view, 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 end portions 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, the first vertical reinforcing member 37 is provided directly below the vertical reinforcing members 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, the 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, the 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 an expected 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 expected 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 ends of the pair of expected surfaces 371. The outdoor finding surface 370, the pair of expected surfaces 371, and the pair of indoor finding pieces 372 extend perpendicularly to the height direction of panel 3.

[0089] The prospective surface 371 of the first vertical reinforcing member 37 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-side finding surface 30 and the second surface member forming the indoor-side finding surface 31. The first vertical reinforcing member 37 is connected (welded) with the outdoor-side finding surface 370 contacting the inner surface of the outdoor-side finding surface 30 and the indoor-side finding piece 372 contacting the inner surface of the indoor-side finding surface 31.

[0090] The upper edge of the first vertical reinforcing member 37 (at least a pair of prospective surfaces 371) has a shape along the third surface member and the fourth surface member forming the upper surface portion 32, and is partially (at least the horizontal portion) in 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 prospective 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 portion 3710 is formed in the lower part of the prospective 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 a prospective dimension in contact with the first surface member (the main surface portion 300 of the outdoor-side finding surface 30) and the second surface member (the indoor-side finding surface 31).

[0092] Similar to the first vertical reinforcing member 37 (see FIG. 12), the second vertical reinforcing member 38 has a hat-shaped cross-sectional view, including an outdoor-side finding surface 380, a pair of prospective surfaces 381 extending inward from both ends in the width direction (finding direction) of the outdoor-side finding surface, and a pair of indoor-side finding pieces 382 extending in the finding direction so as to be separated from each other from the indoor-side tips of the pair of prospective surfaces 381. The outdoor-side finding surface 380, the pair of prospective surfaces 381, and the pair of indoor-side finding pieces 382 extend vertically in 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 side finding surface 30 and the second surface member forming the indoor side finding surface 31. The second vertical reinforcing member 38 is connected (welded) such that the outdoor side finding surface 380 abuts against the inner surface of the outdoor side finding surface 30 and the indoor side finding piece 382 abuts against the inner surface of the indoor side 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 such that its upper end abuts against the horizontal surface 360 of the lower horizontal reinforcing member 36 and its lower end abuts 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 that abuts against the outdoor side vertical portion (lower outdoor side finding surface 302) of the fifth surface member and the second surface member (indoor side 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, including an outdoor side finding surface 390, a pair of prospective surfaces 391 extending inward from both ends in the width direction (finding direction) of the outdoor side finding surface 390, and a pair of indoor side finding pieces 392 extending in the finding direction so as to be separated from each other from the indoor side tips of the pair of prospective surfaces 391. The outdoor side finding surface 390, the pair of prospective surfaces 391, and the pair of indoor side 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) with the outdoor side finding surface 390 in contact with the inner surface of the fifth surface member forming the lower outdoor side finding surface 302 and the indoor side finding piece 392 in contact with 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 is in contact with 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) is partially in contact with 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 in contact with the central horizontal plane 332, a vertical edge in contact with the lower end portion of the indoor side vertical plane 334, and a horizontal edge 394 in contact with 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 the present 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, a predetermined height, and a predetermined thickness (prospective dimension) 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 plane 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 plane 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' consists 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 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 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 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 in the horizontal plane 450 of the intermediate horizontal reinforcing member 45 at intervals in the length direction (panel width direction).

[0108] The lower horizontal reinforcing member 46 has a U-shape in a cross-sectional view, 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 finding surface 40 and the second surface member forming the indoor 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 finding surface 40 and the indoor finding surface 41. The lower end of the outdoor vertical plane 461 is in contact with the proximal end side of the outdoor lower surface 430, which is an outdoor horizontal piece, and the lower end of the indoor vertical plane 462 is in contact with the proximal end side of the indoor lower surface 431, which is an indoor 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. A plurality of detection switches SW are provided in the space surrounded by the lower horizontal reinforcing member 46, the outdoor lower surface 430, and the indoor lower surface 431 in the width direction. The horizontal plane 460 of the lower horizontal reinforcing member 46 serves as the mounting surface for the detection switch SW. A plurality of drain holes (not shown) are formed in the horizontal plane 460 of the lower horizontal reinforcing member 46 at intervals in the length direction (panel width direction).

[0109] [C-3-4] Vertical Reinforcing Member of Bottom Panel (Panel Body) In 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. Further, 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 includes an outdoor-facing surface 470, a pair of expected surfaces 471 extending inward from both ends in the width direction (the looking direction) of the outdoor-facing surface 470, and a pair of indoor-facing pieces 472 extending in the looking direction so as to be separated from each other from the indoor-side tips of the pair of expected surfaces 471, and has a cross-sectional hat shape. The outdoor-facing surface 470, the pair of expected surfaces 471, and the pair of indoor-facing 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 pieces 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, and also has an expected dimension for abutting against the first surface material (the outdoor-facing surface 40) and the second surface material (the indoor-facing surface 41).

[0115] Similar to the first vertical reinforcing member 47, in a cross-sectional view, the second vertical reinforcing member 48 has a hat-shaped cross-sectional shape composed of an outdoor-facing surface 480, a pair of expected surfaces 481 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 482 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 481. The outdoor-facing surface 480, the pair of expected surfaces 481, and the pair of indoor-facing finding pieces 482 extend perpendicularly in 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-facing surface 40 and the second surface material forming the indoor-facing surface 41. The second vertical reinforcing member 48 is connected (welded) with the outdoor-facing surface 480 abutting against the inner surface of the outdoor-facing surface 40 and the indoor-facing finding piece 482 abutting against the inner surface of the indoor-facing 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 in the expected surface 481 at intervals in the vertical direction.

[0118] [C-3-5] The 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 surface 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 the expected dimensions 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 an outdoor side elastic water stop member and an indoor side elastic water stop member may be provided on the lower surface portion 43 (outdoor side lower surface 430, 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 configured to fit together. In the present embodiment, in the panels adjacent to each other 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 configured to fit 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 to each other vertically of the shutter curtain 1 according to the present embodiment, it will be described based on the fitting of the panels 3 adjacent to each other 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 fit 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 in FIG. 4 and 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-facing surfaces 30 and the indoor-facing 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 figure 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 at 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 at 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 at the lower end portion of the upper panel 3. The outdoor side inclined surface 321 of the upper surface portion 32 at 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 at the lower end portion of the upper panel 3. The central horizontal plane 322 of the upper surface portion 32 at 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 at the lower end portion of the upper panel 3. The indoor side inclined surface 323 of the upper surface portion 32 at the upper end portion of the lower panel 3 is located directly below the indoor side inclined surface 333 of the lower surface portion 33 at the lower end portion of the upper panel 3. The indoor side vertical surface 324 of the upper surface portion 32 at the upper end portion of the lower panel 3 is located slightly outside the indoor side vertical surface 334 of the lower surface portion 33 at the lower end portion of the upper panel 3 (the indoor side vertical surface 324 is close to and hangs down from the indoor side vertical surface 334). Below the indoor side lower surface 335 of the lower surface portion 33 at the lower end portion of the upper panel 3, the 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 figure 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 with respect to the lower panel 3. When the shutter curtain 1 is displaced inward during its descent, since the inner-facing surface 31 of the panel 3 abuts against the watertight rubber member 55, it will not be displaced further inward from the state shown in the central view of Fig. 21. In the central view of Fig. 21, the corner of the outer inclined surface 331 and the central horizontal surface 330 of the lower end portion of the upper panel 3 is located slightly inward from the corner of the outer upper surface 320 and the outer inclined surface 321 at the upper end portion of the lower panel 3. When the upper panel 3 moves downward with respect to the lower panel 3 from this state, the outer inclined surface 331 of the upper panel 3 is guided by the outer inclined surface 321 of the lower panel 3, and the upper panel 3 moves outward with respect 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 with respect to the lower panel 3. When the shutter curtain 1 is displaced outward during its descent, since the lower outer-facing surface 302 at the lower end portion abuts against the outer rising piece 303 at the upper end portion of the lower panel 3, it will not be displaced further outward from the state shown in the right view of Fig. 21. In the right view of Fig. 21, the corner of the inner vertical surface 334 and the inner lower surface 335 of the lower end portion of the upper panel 3 is located slightly inward from the corner of the inner inclined surface 323 and the inner vertical surface 324 at the upper end portion of the lower panel 3. When the upper panel 3 moves downward with respect to the lower panel 3 from this state, the lower outer-facing surface 302 at the lower end portion is guided downward while slidingly contacting the outer rising piece 303 at the upper end portion of the lower panel 3, and the inner vertical surface 334 of the lower end portion of the upper panel 3 is guided downward while slidingly contacting the inner 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 rising piece 303 of the upper end portion of the lower panel 3 is close to the outdoor side of the outdoor finding surface 302 below 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 of the lower end portion of the upper panel 3 is close to the outdoor 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 inclined surface 331 of the lower surface portion 33 of the lower end portion of the upper panel 3 is close to the outdoor 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 inclined surface 333 of the lower surface portion 33 of the lower end portion of the upper panel 3 is close to the indoor 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 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 vertical surface 324 of the upper surface portion 32 of the upper end portion of the lower panel 3, and the indoor 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 waterstop 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 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 reinforcing member 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 reinforcement member units each consisting of a first vertical reinforcement member 27, a second vertical reinforcement member 28, and a third vertical reinforcement member 29, which are continuous in the panel height direction (in this embodiment, they are continuous so as to overlap in the height direction via horizontal reinforcement members) with an interval in the panel width direction. As shown in FIGS. 3 and 11, inside the panel 3 according to this embodiment, there are provided five sets of vertical reinforcement member units each consisting of a first vertical reinforcement member 37, a second vertical reinforcement member 38, and a third vertical reinforcement member 39, which are continuous in the panel height direction (in this embodiment, they are continuous so as to overlap in the height direction via horizontal reinforcement members) with an interval in the panel width direction. As shown in FIGS. 3 and 16, inside the bottom panel 4 according to this embodiment, there are provided five sets of vertical reinforcement member units each consisting of a first vertical reinforcement member 47 and a second vertical reinforcement member 48, which are continuous in the panel height direction (in this embodiment, they are continuous so as to overlap in the height direction via horizontal reinforcement members) with an interval in the panel width direction. 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 reinforcement members and a plurality of vertical reinforcement 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 reinforcement member 35 and a lower horizontal reinforcement member 36 into an upper part between the upper surface part 32 and the intermediate horizontal reinforcement member 35, an intermediate part between the intermediate horizontal reinforcement member 35 and the lower horizontal reinforcement member 36, and a lower part between the lower horizontal reinforcement member 36 and the lower surface part 33. The upper part is further partitioned by five first vertical reinforcement members 37 extending vertically with an interval 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 reinforcement members 38 extending vertically with an interval 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 reinforcement members 39 extending vertically with an interval 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, a 19th space 3a, a 20th space 3b, a 21st space 3c, a 22nd space 3d, and a 23rd space 3e are respectively formed. Inside each of the second vertical reinforcing members 38 in the middle portion, a 24th space 3f, a 25th space 3g, a 26th space 3h, a 27th space 3i, and a 28th space 3j are respectively formed. Inside each of the third vertical reinforcing members 39 in the lower portion, a 29th space 3k, a 30th space 3l, a 31st space 3m, a 32nd space 3m, and a 33rd space 3o are respectively formed. 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 the spaces. 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 inundated the inside of 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 flood, no water remains inside the panel 3. The description of the structure of the above-mentioned panel 3 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 portions (in this embodiment, pressed recesses 221) are provided on the top panel 3 so as to correspond 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 portions. 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]Waterstop structure [D-1]Waterstop 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 waterstop structure or a watertight 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.

[0135] Since the configuration of the lower end portion of the top panel 2 is the same as the configuration of the lower end portion of the panel 3, and the configuration of the upper end portion of the bottom panel 4 is the same as the configuration of the upper end portion of the panel 3, the waterstop structure between the panels of the shutter curtain 1 according to this embodiment will be described based on the waterstop 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 vertical surface 324, the indoor lower surface 325, and the indoor 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 lower surface 335 of the upper panel 3 are separated (see the left figure in Fig. 4). In the fully closed position (non-vertically compressed state) of the shutter curtain 1, the indoor lower surface 335 of the upper panel 3 abuts against the upper surface 164 of the elastic water stop member 16 of the lower panel 3 (see Fig. 19). When the shutter curtain 1 in the fully closed position changes to the vertically compressed state from the state shown in Fig. 19, with the indoor lower surface 335 of the upper panel 3 abutting against 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. As a result, 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, and a water stop structure is formed (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 lower surface 325), the inner surface of the outer finding piece (indoor rising piece 310) rising from the outer end portion of the bottom (indoor lower surface 325), and the first portion 3240 of the inner finding surface (indoor vertical surface 324) located inside the bottom (indoor lower surface 325) and facing the outer finding piece (indoor rising piece 310). The inner finding surface (indoor 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 rising piece 310)).

[0138] As shown in FIGS. 24 and 25, the long elastic water stop member 16 fitted into the groove extending in the panel width direction is integrally formed from a hard elastic portion 16A located within the groove and a soft elastic portion 16B located outside the groove. 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 examples and are not limited. In the present embodiment, by integrally forming the elastic water stop member 16 from the hard elastic portion 16A located within the groove and the soft elastic portion 16B located outside the groove, deformation of the base (foundation) of the elastic water stop member 16 within the groove is prevented as much as possible during the self-weight of the panel and vertical compression, and the shape of the base (foundation) of the elastic water stop 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 connection surface (upper surface portion) 163, and the soft elastic portion 16B includes a contact surface (upper surface) 164, an inner finding surface 165, an outer finding surface 166, and a connection surface (lower surface portion) 167 that is in close contact with the connection surface (upper surface portion) 163. Note that in the description of the elastic water stop member 16, it should be noted that "inner side" means the side close to the indoor vertical surface 324 when fitted into the groove, and "outer side" means the side far from the indoor vertical surface 324 when fitted into the groove.

[0140] The connection surface (upper surface portion) 163 of the hard elastic portion 16A consists of a first horizontal plane 1630 and a first inclined surface 1631 that inclines from the outside of the first horizontal plane 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 plane 1670 and a second inclined surface 1671 that inclines from the outside of the second horizontal plane 1670 away from the upper surface 164, and the first horizontal plane 1630 and the second horizontal plane 1670, the first inclined surface 1631 and the second inclined surface 1671 are in close contact.

[0141] 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.

[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 (the 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 manner 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 also be substantially coincident.

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

[0145] The outer part (1660) of the part of the soft elastic part 16B located inside the groove part is in close contact with the inner surface of the outer finding piece (the indoor-side rising piece 310). Specifically, the part surrounded by the lower part (the first part 1660) of the outer finding surface 166 of the soft elastic part 16B and the second inclined surface 1671 is located inside the groove part, and the first part 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 part of the rigid elastic part 16A is in contact with the first part 3240 of the inner finding surface (the indoor-side vertical surface 324) of the groove part 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 part 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). The protruding piece 1620 of the rigid elastic part 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 against the direction in which the elastic water stop member 16 comes out of the groove portion, preventing 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, thereby forming a water stop structure 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), forming a water stop structure.

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

[0151] The second part 1661 of the outer mating surface 166 bulges outward (shown as 1661´) from the outer surface of the outer mating piece (the indoor rising piece 310). It should be noted that the bulging shape of the second part 1661 shown in Fig. 26 is just an example, and different bulging shapes may occur depending on how the force is applied and other factors. As will be described later, in the vertical compression and horizontal compression states, the bulging second part 1661´ of the outer mating surface 166 is in close contact with the watertight rubber member 55.

[0152] [D―2] Waterstop 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 waterstop structure is formed between the bottom panel body 4´ and the movable seat plate 6 in the bottom panel 4. In this embodiment, the waterstop 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 portion of the movable seat plate 6, a groove portion extending in the longitudinal 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 the 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 from each other (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 blocked 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 view from the 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 the 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 extending in the panel width direction (seat plate width direction) is integrally formed from a hard elastic part 16A located within the groove and a soft elastic part 16B whose upper part is located outside the groove. So to speak, it is in a form where the soft elastic part 16B is integrally formed on the base formed by the hard elastic part 16A. In the present embodiment, the hard elastic part 16A is formed from a flame-retardant rubber (such as chloroprene rubber), and the soft elastic part 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 part 16A located within the groove and the soft elastic part 16B located outside the groove, deformation of the base (foundation) of the elastic waterstop member 16 within the groove is prevented as much as possible during the self-weight of the panel and vertical compression, 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 part 16A includes a bottom surface 160, an inner finding surface 161, an outer finding part 162, and a connection surface (upper surface part) 163, and the soft elastic part 16B includes a contact surface (upper surface) 164, an inner finding surface 165, an outer finding surface 166, and a connection surface (lower surface part) 167 that adheres to the connection surface (upper surface part) 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, and "outer side" means the side farther from the indoor finding surface 64 when fitted into the groove.

[0157] The connection surface (upper surface part) 163 of the hard elastic part 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 part) 167 of the soft elastic part 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 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.

[0159] A plurality of (three in the illustrated embodiment, see FIG. 27) protrusions 1610 extending in the panel width direction are formed on the inner finding surface 161 of the hard elastic part 16A. That is, the inner finding part of the hard elastic part 16A is composed of the inner finding surface 161 and a plurality of protrusions 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 is composed of a first part 1660 on the bottom surface 160 side and a second part 1661 on the abutted surface (upper surface) 164 side. As will be described later, the outer finding surface 166 of the soft elastic part 16B is composed of a first part 1660 that adheres closely to the inner surface of the outer finding piece (the 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 is composed 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 be substantially coincident.

[0161] As shown in Fig. 27, the rigid elastic part 16A of the elastic waterstop member 16 is fitted into the groove part, the lower part of the soft elastic part 16B of the elastic waterstop member 16 is located inside the groove part, and the upper part is located outside the groove part (above the groove part). In the state where the elastic waterstop member 16 is fitted into the groove part, the bottom surface of the elastic waterstop member 16 (the bottom surface 160 of the rigid elastic part 16A) is in contact with the bottom part (the indoor side part of the bottom surface 60), and the inner finding part of the rigid elastic part 16A is in contact with the first part 640 of the inner finding surface (the indoor side finding surface 64) of the groove part via the protrusion 1610. The outer finding part 162 of the rigid elastic part 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 part (1660) of the part of the soft elastic part 16B located inside the groove part is in close contact with the inner surface of the outer finding piece (the indoor side rising piece 62). Specifically, the lower part of the soft elastic part 16B is located inside the groove part, and the first part 1660 of the outer finding surface 166 is in a state of being crushed (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 part of the rigid elastic part 16A is in contact with the first part 640 of the inner finding surface (the indoor side finding surface 64) of the groove part via the protrusion 1610, so that a force in the direction of pressing the elastic waterstop member 16 against the inner surface of the outer finding piece (the indoor side rising piece 62) acts. In the state where the first part 1660 of the outer finding surface 166 is crushed (1660´), it is in close contact with the inner surface of the outer finding piece (the indoor side rising piece 62), and the protrusion piece 1620 of the rigid elastic part 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 waterstop member 16 is fitted into the groove part, the protrusion piece 1620 of the outer finding part 162 of the rigid elastic part 16A extends in an inclined shape 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), and it resists against the direction in which the elastic waterstop member 16β comes out of the groove part, preventing the elastic waterstop member 16 from coming out of the groove part.

[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 main 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 part between the lower end part of the bottom panel main 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 is in 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 is in 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 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 is in 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 (shown as 1661´) from the outer surface of the indoor rising piece 62 of the outer finding piece. 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 may 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 adheres to 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 rising piece 61, and the outdoor finding surface 63, and an outdoor elastic waterstop member 16α is fitted in the groove. When the shutter curtain 1 is in the fully closed position, the outdoor lower surface 430 of the panel body 4´ abuts against the outdoor elastic 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 is composed 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 middle waterstop members 190 provided on the lower surface of the middle 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 material 190' is provided on the bottom surface 60 of the movable seat plate 6, positioned between the end water stop members 191 at both ends, and the narrow intermediate water stop member 190 is fixed to the base elastic material 190'. The combined thickness of the intermediate water stop member 190 and the base elastic material 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 slightly bulges downward in a cross-sectional view cut in the expected direction (see Fig. 22). In this embodiment, the base elastic material 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 material 190'. However, these materials are merely examples and are not limited.

[0172] The end water stop members 191 at both ends and the base elastic material 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'), and 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 across between the end water stop members 191 at both ends at a position away from the indoor side (inner side) from the outdoor finding piece 61 of the movable seat plate 6. The intermediate water stop member 190 located on the indoor side extends across between the end water stop members 191 at both ends at a position away from the outdoor side (inner side) 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 waterstop member 190 has a small contact area with the floor surface, when pressed downward from above with the same force (the self-weight of the panel in the normal fully closed position and the pressing pressure during vertical compression), the surface pressure of pressing against the floor surface is greater than that of the wide waterstop member, and by closely adhering to the floor surface with a greater force, the airtight performance and waterproof performance will be improved.

[0175] When the shutter curtain 1 is in the fully closed position, the elastic waterstop member 19 provided on the bottom surface 60 of the movable seat plate 6 is actually designed to closely adhere to the upper surface 90 of the lower frame or the tatami folding embedded in the floor surface FL, and the expected dimension of the upper surface 90 is 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 toward the indoor side, the shutter curtain 1 may be deformed or displaced toward the indoor side. At this time, although the elastic waterstop member 19 will be displaced toward the indoor side with respect to the upper surface 90 of the lower frame, since the indoor intermediate waterstop member 190 is located inside the indoor rising piece 62, even when the bottom panel 4 is displaced toward the indoor side, the close contact state between the indoor intermediate waterstop 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 waterstop member 191 is located inside the guide body 5 in the fully closed position. The outdoor side part of the end waterstop 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 waterstop member 191 is substantially flush with the indoor side 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 waterstop member 191 and the indoor side rising piece 62 of the movable seat plate 6 are in close contact with the watertight rubber member 55.

[0177] [D - 4] Waterstop 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 end portions 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 horizontal pressing member 82 and the indoor watertight rubber member 55. The outdoor circumferential surface of the guide roller 11 at the tip of the support shaft 10 protruding from the widthwise end portion 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 side surface and the indoor side surface of each panel are in contact with the fins 54 respectively, and the outdoor circumferential surface of the guide roller 11 of the support shafts 10 at both widthwise ends is guided by the guide member 53, and both widthwise ends are guided by the watertight rubber member 55. By the outdoor circumferential surface of the guide roller 11 coming into contact with the guide member 53, the contact between the metal horizontal pressing member 82 and the widthwise end portion of the shutter curtain 1 is restricted during normal opening and closing and in the normal fully closed state.

[0178] By pressing the end portion of the shutter curtain 1 in the fully closed position (vertical compression state) inward by the horizontal pressing member 82, the widthwise end portions 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, and a waterstop structure extending in the height direction at both widthwise ends of the shutter curtain is obtained (see FIGS. 7 and 30).

[0179] When the shutter curtain 1 in the fully closed position is in the 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 to 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 portion 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 for preventing water from entering the indoor side space 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).

[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 touches down or abuts against 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 to the control unit of the opening / closing machine M via the cord reel CR, 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 disposed 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 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 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 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 inside of the bottom panel body 4'. It is necessary to prevent the water that has entered the inside of the bottom panel body 4' from entering the indoor side through the through portion or the relay cable C2.

[0184] As shown in Fig. 32, the internal space of the insertion part (the space surrounded by the wall surface of the insertion part and the second surface of the contact body) is filled with a caulking material 118 so as to surround the relay cable C2. A waterproof treatment made of a rubber packing 119 is provided between the inner surface of the lid part 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 part 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 body 4' and the lid part 113, and the caulking material 118 prevents water from entering the outdoor side along the relay cable C2. The first part 110 and the terminal 116 located on the indoor side of the relay cable C2 and the lid part 113 of the relay cable holder 112 are accommodated inside a cover 121 that is attached to the indoor-side finding surface 41 so as to be openable or detachable, and the cable C1 extends to the outside through a hole formed in the cover 121 (see Fig. 33).

[0185] [E]Airtight structure (smoke-proof structure) and overlapping structure (fire-proof structure) The waterproof shutter according to the present embodiment can be used as a so-called management panel shutter, and in the normal closed state of the building opening, it functions as a fire and smoke shutter. 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, an overlapping structure is formed between the lower part of the upper panel and the upper part of the lower panel of the panels adjacent to each other vertically. Further, in order to function as a fire and smoke shutter in the normal closed state, it has an airtight structure for preventing smoke and flames from a fire from entering the indoor side from the outdoor side. Further, the airtight structure according to the present embodiment can also prevent smoke and flames from a fire from being discharged from the indoor side to the outdoor side.

[0186] [E-1] Airtight structure between panels in 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 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 in the shutter curtain 1 in the fully closed position.

[0187] As shown in FIG. 14, an airtight member is continuously provided across 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 part in the width direction of the panel 3, the outdoor-side rising piece 303 at the upper end of the lower panel 3 is close to the outdoor side of the outdoor-side finding surface 302 at the lower end of the upper panel 3 (the outdoor-side rising piece 303 is located at the step formed by the lower edge 301 and the outdoor-side finding surface 302), the outdoor-side lower surface 330 of the lower surface 33 at the lower end of the upper panel 3 is close to the outdoor-side upper surface 320 of the upper surface 32 at the upper end 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 33 at the lower end of the upper panel 3 is close to the outdoor-side inclined surface 321 of the upper surface 32 at the upper end 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 33 at the lower end of the upper panel 3 is in contact with the central horizontal plane 322 of the upper surface 32 at the upper end of the lower panel 3. However, at both ends in the width direction of the panel 3, the end lower airtight member 18 at the lower end of the upper panel 3 is in close contact with the outdoor-side upper surface 320 and the outdoor-side inclined surface 321 of the upper surface 32 at the upper end of the lower panel 3, and the left and right end outdoor-side airtight members 17 are located 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 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 posture 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 longitudinal 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. An outdoor side elastic water stop 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 water stop 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 water stop member 19 is provided across the entire width on the bottom surface 60 of the movable seat plate 6. When the elastic water stop 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 ends 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 over the height direction at the tip of the outdoor side bent piece 500 of the guide body 5. 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 ridge 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. However, 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, yet 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 for Preventing Draft between Panels in Shutter Curtain in Fully Closed Position In this embodiment, in the panels adjacent to the upper and lower sides of 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 gap 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 gap structure between the panels adjacent to the upper and lower sides of the shutter curtain 1 according to this embodiment will be described based on the fitting of the panels 3 adjacent to the upper and lower sides in the shutter curtain 1 in the fully closed position. The lower surface portion 33 of the upper panel 3 includes an outdoor-side lower surface (outdoor-side horizontal plane) 330, a side-view pedestal-shaped portion composed of an outdoor-side inclined surface 331, a central horizontal plane 332, and an indoor-side inclined surface 333, and an indoor-side part (indoor-side vertical surface 334, indoor-side lower surface 335). The upper surface portion 32 of the lower panel 3 includes an outdoor-side upper surface (outdoor-side horizontal plane) 320, a side-view pedestal-shaped portion composed of an outdoor-side inclined surface 321, a central horizontal plane 322, and an indoor-side inclined surface 323, and an indoor-side part (indoor-side vertical surface 324, indoor-side lower surface 325). When the shutter curtain is in the fully closed position, the lower end portion of the upper panel 3 and the upper end portion of the lower panel 3 are fitted with the pedestal-shaped portion (outdoor-side inclined surface 331, central horizontal plane 332, indoor-side inclined surface 333) of the lower surface portion 33 of the upper panel 3 and the pedestal-shaped portion (outdoor-side inclined surface 321, central horizontal plane 322, indoor-side inclined surface 323) of the upper surface portion 32 of the lower panel 3 to form a gap structure. In this embodiment, further, the outdoor-side rising piece 303 of the lower panel 3 is close to and faces the lower outdoor-side finding surface 302 of the upper panel 3 to form a gap structure. In this embodiment, due to the synergistic effect of the airtight structure and the gap structure, the fireproof and smoke-proof 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 fireproof joint structure (fireproof structure) is formed between the panels adjacent vertically. In the fully closed state (non-compressed 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 joint 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 in the event of 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, releases the brake, and causes the shutter curtain to descend 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 by self-weight descent 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 descent or electric descent. When the fire detection signal is "present", it is judged that the shutter curtain has assumed the fully closed position by self-weight descent, the transmission of the 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 descent or electric descent. When a vertical pressing signal is transmitted from the pressing button to the vertical pressing mechanism, the 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, the 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 Middle 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 Upright Piece (Projection Piece) 31 Indoor Side Finding Surface 310 Indoor Side Upright Piece (Outer Finding Piece of Groove Part, Projection 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 Plane (Inner Finding Surface, Step - Different 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 Plane 335 Indoor Side Lower Surface (Pressing Part) 35 Intermediate Horizontal Reinforcing Member 36 Lower - Side Horizontal Reinforcing Member 37 First Vertical Reinforcing Member 38 Second Vertical Reinforcing Member 39 Third Vertical Reinforcing Member 4 Bottom Panel 4´ Bottom Panel Body 40 Outdoor Side Finding Surface 400 Outdoor Side Upright Piece (Projection Piece) 41 Indoor Side Finding Surface 410 Indoor Side Upright Piece (Outer Finding Piece of Groove Part, Projection 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 Plane (Inner Finding Surface, Step - Different Indoor Side Finding Surface) 425 Inner side lower surface (bottom of groove part) 43 Lower surface part 430 Outer side lower surface (lower surface of panel body) 431 Inner side lower surface (lower surface of 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 shielding material 56´ Upper smoke shielding material 6 Movable seat plate 60 Bottom surface (inner side part is the bottom of groove part) 61 Outer side rising piece (outer side part of seat plate) 62 Inner side rising piece (outer finding piece, protruding piece of groove part) 620 Tip edge (upper edge) 63 Outer side finding surface 64 Inner side 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 side finding surface (inner finding part) 1610 Ridge 162 Outer side finding part 1620 Protruding piece 163 Connection surface (first connection surface) 1630 First horizontal plane 1631 First inclined plane 164 Contact surface 165 Inner side finding surface 166 Outer side 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 panels, Left and right guide bodies for receiving the widthwise ends of the shutter curtain, In a waterproof shutter provided with, The lower part of the upper panel of panels adjacent vertically is concave, and the upper part of the lower panel is convex, The lower part includes an outdoor horizontal plane, an outdoor inclined plane, a central horizontal plane, a side-view pedestal-shaped part composed of an indoor inclined plane, and an indoor part composed of an indoor vertical plane and an indoor horizontal plane provided at the lower end of the indoor vertical plane, The upper part includes an outdoor horizontal plane, an outdoor inclined plane, a central horizontal plane, a side-view pedestal-shaped part composed of an indoor inclined plane, an indoor part composed of an indoor vertical plane, a groove provided below the indoor vertical plane, and an elastic water-stop member provided in the groove, The elastic water-stop member is provided across the entire width of the panel in the indoor part of the upper part, When the shutter curtain is in the fully closed position, the trapezoidal parts of the lower part and the upper part are fitted together, the elastic water-stop member blocks the space between the indoor parts of the lower part and the upper part, the indoor horizontal plane of the lower part abuts against the elastic water-stop member of the upper part, and the indoor vertical planes are close to or in contact with each other. A waterproof shutter.

2. At least one of the central horizontal plane of the trapezoidal part of the upper part and the central horizontal plane of the trapezoidal part of the lower part is provided with a buffer material extending in the panel width direction, When the shutter curtain is in the fully closed position, the buffer material is sandwiched between the central horizontal planes of the upper and lower trapezoidal parts, The waterproof shutter according to Claim 1.

3. The waterproof shutter is provided with vertical pressing means for vertically pressing the shutter curtain in the fully closed position, During vertical pressing, a vertical pressing force is transmitted to the lower panel through the buffer material and the elastic water-stop member pressed between the lower part and the upper part, The waterproof shutter according to Claim 2.

4. When the shutter curtain is in the fully closed position, the outdoor horizontal planes are close to or in contact with each other, During vertical pressing, the outdoor horizontal plane of the lower part abuts against the outdoor horizontal plane of the upper part and presses downward, so that a vertical pressing force is transmitted to the lower panel, The waterproof shutter according to Claim 3.

5. When the lower part and the upper part approach each other in the height direction, if the upper panel is displaced inward of the room with respect to the lower panel, the outdoor inclined surface of the lower part and the outdoor inclined surface of the upper part serve as guide surfaces to form a fitting state. The waterproof shutter according to any one of claims 1 to 4.

6. When the lower part and the upper part approach each other in the height direction, the indoor vertical surface of the lower part is guided by the indoor vertical surface of the upper part to form a fitting state. The waterproof shutter according to any one of claims 1 to 5.

7. When the lower part and the upper part approach each other in the height direction, if the upper panel is displaced outward of the room with respect to the lower panel, the indoor inclined surface of the upper part serves as a guide surface. The waterproof shutter according to any one of claims 1 to 6.

8. On the outdoor side of the lower part, a stepped outdoor stepped finding surface located inward of the room with respect to the outdoor finding surface of the upper panel is formed. On the outdoor side of the upper part, an outdoor rising piece flush with the outdoor finding surface of the lower panel is formed. When the lower part and the upper part approach each other in the height direction, the outdoor stepped finding surface serves as a guide surface, and in the fully closed position of the shutter curtain, the outdoor rising piece is located on the outdoor side of the outdoor stepped finding surface. The waterproof shutter according to any one of claims 1 to 7.

9. When the lower part and the upper part approach each other in the height direction, the movement of the upper panel outward of the room with respect to the lower panel is restricted by the contact of the outdoor stepped finding surface with the outdoor rising piece. The waterproof shutter according to claim 8.

Images