window shutters

Abstract

To provide a manual window shutter installed at the outdoor side of a floor-length window with a shutter curtain capable of being pushed well to the fully closed position when the window shutter is closed.SOLUTION: A window shutter comprises a shutter storage part (shutter case 6) provided in a frame at the outdoor side of the window opening, left and right side frames (shutter base frame 3+guide rail 4), and a floor FL, in which a shutter curtain 5 opens and closes a space. The lower part of the side frame and the floor FL are located below the window opening. The shutter curtain 5 includes: an upper portion 5A located above the lower end of the window opening; and a lower part 5B located below the lower edge of the window opening when the window shutter is fully closed. A handle 9 is provided on the indoor side surface of the slat 5 forming the upper portion 5A.SELECTED DRAWING: Figure 4

Description

[Technical Field]

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

[0002] A window shutter is a shutter that opens and closes the space on the outdoor side of a window opening, and is equipped with left and right guide rails attached to left and right guide rail base frames that are protruding from the main body, a shutter case that is protruding from the main body, and a shutter curtain that can be wound up on a winding shaft provided within the shutter case, with both widthwise ends of the shutter curtain guided by the left and right guide rails to open and close the space on the outdoor side of the window opening.

[0003] In a normal window shutter, the lower ends of the left and right guide rail base frames are fixed by a drip board (bottom frame) that extends in the width direction of the opening (Patent Document 1), so the shutter curtain opens and closes the opening that has a frame shape all around it, and the bottom frame of the window opening (window sash frame) and the bottom frame of the window shutter are at approximately the same height. When the window shutter is manual, to close the window shutter from inside the room, the seat plate at the bottom of the shutter curtain is grasped and lowered, and finally the shutter curtain is pushed down to the bottom position to fully close the shutter.

[0004] However, when a window shutter is installed on the outdoor side of a French window, for example, the lower end of the shutter curtain rests directly on the floor when in the fully closed position. With such a window shutter, the floor (for example, the floor of a balcony) and the lower parts of the left and right side frames (guide rail base frame + guide rail) are located below the bottom frame of the window opening (window sash frame), and the gap on the outdoor side of the bottom frame of the window opening is narrow. Therefore, if the window shutter is manual, when closing the window shutter from indoors, it is not possible to insert one's hand into the outdoor side of the bottom frame when the shutter is near the fully closed position, making it difficult to push the shutter curtain all the way down to the bottom position. [Patent Document 1] Patent Publication No. 2013-177743 DISCLOSURE OF THE INVENTION [Problem to be solved by the invention]

[0005] To provide a manual window shutter, such as one installed on the outdoor side of a bay window, that enables a shutter curtain to be smoothly pushed into a fully closed position when the window shutter is closed. [Means for solving the problem]

[0006] The technical means adopted by the present invention are: A window shutter is formed by a shutter storage section provided in a cantilevered shape on the main body, left and right side frames, and a bottom surface, and a shutter curtain opens and closes a space located on the outdoor side of a window opening. the lower portion of the side frame and the lower surface are located below the window opening, the shutter curtain includes an upper portion located above a lower end of the window opening when the window shutter is in a fully closed position, and a lower portion located below the lower end of the window opening, A handle is provided on the indoor side surface of the slat forming the upper portion. Window shutters. In one embodiment, the lower surface is typically a floor surface, but may also be, for example, a lower frame that forms the lower part of the opening.

[0007] In one embodiment, the shutter curtain includes an outermost portion located between a portion near the top panel of the case and a seat plate located in the lintel of the shutter storage section when the shutter curtain is in a rolled-up state when the opening is fully open, The handle is provided on the interior side of the slat that forms the upper and outermost portion.

[0008] In one embodiment, the handle is provided at a position offset toward the end in the width direction from the center in the width direction of the slat. In one embodiment, the handle is located approximately above a lever lock provided on the seat plate, and the base end of a string-like member is connected to the lever lock, and the grip portion provided at the tip of the string-like member can be detachably connected to the indoor side portion of the slat that forms the upper part (in the illustrated embodiment, the slat on which the handle is provided).

[0009] In one embodiment, the slat comprises a curved plate-shaped main body portion, an upper interlock portion integrally formed at the upper end of the main body portion, and a lower interlock portion integrally formed at the lower end of the main body portion, The handle comprises a main body having a U-shaped cross section formed from an upper horizontal piece, a lower horizontal piece, and a vertical surface, and a handle piece extending from the vertical surface to the opposite side of the upper horizontal piece and the lower horizontal piece, The handle has the vertical surface portion fixed to the main body portion with screws, with the upper horizontal piece engaging or abutting against the base end of the upper interlock portion and the lower horizontal piece engaging or abutting against the lower portion of the main body portion or the base end of the lower interlock portion. [Effects of the Invention]

[0010] In the window shutter of the present invention, when closing the window shutter from a fully open state, the window opening is opened, and the shutter curtain is lowered by placing a hand on the seat plate from the window opening, and after the seat plate has lowered below the bottom frame of the window opening, the hand is placed on the handle from the window opening and the slats are pushed downward to the fully closed state. [Brief explanation of the drawings]

[0011] [Figure 1] FIG. 2 is a vertical cross-sectional view of the window shutter according to the present embodiment. [Figure 2] FIG. 2 is a cross-sectional view of the window shutter according to the present embodiment. [Figure 3] FIG. 2 is a vertical cross-sectional view of the shutter housing portion of the window shutter (fully open state) according to the present embodiment. [Figure 4] FIG. 2 is a vertical cross-sectional view of a lower portion of the window shutter according to the present embodiment. [Figure 5] FIG. 5 is an enlarged partial view of FIG. 4 showing the slat with the handle attached. [Figure 6] This is a diagram showing the lower part of a front view of a window shutter in a fully closed state as seen from the indoor side. [Figure 7] FIG. [Figure 8] FIG. 2 is a view showing a seat plate according to the first embodiment. [Figure 9] FIG. 10 is a view showing a seat plate according to a second embodiment. [Figure 10] FIG. 10 is a view showing a seat plate according to a third embodiment. [Figure 11] FIG. 10 is a diagram showing a support structure for a case angle using end hooks. [Figure 12] 1A and 1B are diagrams showing a case angle support structure (first embodiment) using an intermediate hook fitting according to the first embodiment. [Figure 13] 1 is a front view showing a case angle support structure (first embodiment) using an end hook fitting and an intermediate hook fitting according to the first embodiment. FIG. [Figure 14] FIG. 2 is a view showing an intermediate hook fitting according to the first embodiment. [Figure 15] The upper diagram shows a support member attached to a case angle of the case angle support structure according to the first embodiment. The lower diagram shows a support member attached to a case angle of the case angle support structure according to the second embodiment. [Figure 16] The upper diagram shows a case angle assembly of the case angle support structure according to the first embodiment, and the lower diagram shows a case angle assembly of the case angle support structure according to the second embodiment. [Figure 17] 10A and 10B are diagrams showing a case angle support structure (second embodiment) using an intermediate hook fitting according to a second embodiment. [Figure 18] FIG. 10 is a front view showing a case angle support structure (second embodiment) using an end hook fitting and an intermediate hook fitting according to the second embodiment. [Figure 19]FIG. 2 is a view showing an intermediate hook fitting according to the first embodiment. [Figure 20] FIG. 10 is a side view of the lower portion of the side frame, showing a gap formed in the lower portion. [Figure 21] FIG. 10 is a cross-sectional view of the lower portion of the side frame, viewed from below. [Figure 22] FIG. 4 is a side view of the lower portion of the side frame, showing the gap closing means (first aspect) according to the first embodiment. [Figure 23] FIG. 4 is a side view of the lower portion of the side frame, showing the gap closing means (second embodiment) according to the first embodiment. [Figure 24] FIG. 23 is a cross-sectional view corresponding to FIG. 22. [Figure 25] The right image shows the first member, and the left image shows the second member. [Figure 26] The figure shows a gap sealing means formed by combining a first member and a second member, with the right figure showing a first embodiment having a first height dimension and the left figure showing a second embodiment having a second height dimension that is higher than the first height dimension. [Figure 27] FIG. 10 is a side view of the lower portion of the side frame, showing the gap closing means (first embodiment) according to the second embodiment. [Figure 28] FIG. 28 is a cross-sectional view corresponding to FIG. 27. [Figure 29] FIG. 10 is a side view of the lower portion of the side frame, showing the gap closing means (second embodiment) according to the second embodiment. [Figure 30] 30 is a cross-sectional view corresponding to FIG. 29, in which the upper view shows a state in which the prospective dimensions of the gap closing means have been determined, and the lower view shows a state in which the prospective dimensions of the gap closing means have been fixed. [Figure 31] The left image shows the first member, and the right image shows the second member. [Figure 32] The figure shows a gap sealing means formed by combining a first member and a second member, with the left figure showing a first embodiment having a first prospective dimension and the right figure showing a second embodiment having a second prospective dimension larger than the first prospective dimension. [Figure 33] FIG. 10 is a side view of the lower portion of the side frame, showing the state before the gap is closed by the gap closing means according to the third embodiment. [Figure 34]FIG. 34 is a cross-sectional view corresponding to FIG. 33. [Figure 35] FIG. 10 is a side view of the lower portion of the side frame, showing the state in which the gap is closed by the gap closing means according to the third embodiment. [Figure 36] 36 is a cross-sectional view corresponding to FIG. 35, in which the upper view shows a state in which the prospective dimensions of the gap closing means have been determined, and the lower view shows a state in which the prospective dimensions of the gap closing means have been fixed. [Figure 37] (A) shows the first unit (when the second element is raised), (B) shows the second unit (when the fourth element is raised), and (C) shows the gap sealing means formed by combining the first unit and the second unit (when the second element and the fourth element are raised). [Figure 38] (A) shows the second element of the first unit, (B) shows the first element of the first unit, (C) shows the fourth element of the second unit, and (D) shows the third element of the second unit. [Figure 39] This shows a gap sealing means formed by combining a first unit and a second unit, with the left image showing the state before it is extended in the height and projection directions, and the right image showing the state after it has been extended in the height and projection directions. DETAILED DESCRIPTION OF THE INVENTION

[0012] [A] Overall structure of window shutter An embodiment of the present invention will be described in detail with reference to the drawings. Fig. 1 is a side view of a window shutter in a fully closed position according to this embodiment, and Fig. 2 is a cross-sectional view of the window shutter. The window shutter is a shutter installed on the outdoor side of a window device, and the window device according to this embodiment is a so-called French window. A French window has, for example, two sliding door bodies or folding doors that open and close the window opening, and the lower ends of the window opening and the door bodies reach near the bottom of the indoor space. The outdoor side of the window opening is a balcony. The outdoor side of the window opening may also be a terrace on the first floor of a building.

[0013] The window shutter is located above the window opening and comprises left and right brackets 1 attached to the frame (exterior wall W) in a corrugated manner, a winding shaft 2 supported between the left and right brackets 1, a guide rail base frame 3 on left and right sides in the width direction of the opening attached to the exterior wall W in a corrugated manner, left and right guide rails 4 supported by the guide rail base frames 3 on left and right sides in the width direction of the opening, a shutter curtain 5 connected at its upper end to the winding shaft 2, which is wound / unwound on the winding shaft 2 so that both widthwise ends of the shutter curtain 5 rise and fall while being guided by the guide rails 4, thereby opening and closing the space on the outdoor side of the window opening, and a shutter case 6 located above the window opening and attached to the exterior wall W in a corrugated manner, which stores the shutter curtain 5 wound up on the left and right brackets 1 and the winding shaft 2. The window shutter according to this embodiment is manual, and the window opening is opened and closed by manually raising and lowering the shutter curtain 5.

[0014] The shutter curtain 5 of the window shutter is designed to close the outdoor space of the window device formed in the building frame, and the space that is opened and closed by the window shutter is the space surrounded by the underside of the shutter case 6, the left and right side frames (guide rail base frame 3 + guide rail 4), and the balcony floor surface FL. In other words, the window shutter according to this embodiment does not have a drip board (bottom frame).

[0015] The shutter curtain 5 is formed by connecting elongated slats 50 extending in the width direction of the opening at the top and bottom, with a seat plate 7 attached to the bottom end. The shutter curtain 5 opens and closes the opening by raising and lowering both widthwise ends of the slats 50 guided by the grooves of the guide rails 4, and when the opening is fully closed, the seat plate 7 at the bottom end is placed on the floor surface FL. The floor surface FL of the balcony in this embodiment slopes gently downward from the indoor side to the outdoor side. When the opening is fully open, the shutter curtain 5 is stored in the shutter case 6 in a wound state, having been wound up around the winding shaft 2 (see Figure 3). The window shutter in this embodiment is manual, and the winding shaft 2 is equipped with a balance spring (not shown).

[0016] As shown in FIG. 1, in this embodiment, the lower portions of the balcony floor surface FL and the left and right side frames (guide rail base frame 3 + guide rail 4) are located below the lower end of the window opening, and a lower wall surface W' is formed rising vertically at the indoor end of the floor surface FL. In this embodiment, the lower wall surface W' is located indoors relative to the exterior wall W to which the guide rail base frame 3 and shutter case 6 are attached. A waterproof layer 20 is formed in an L-shaped cross section extending from the floor surface FL to the lower wall surface W'. A space is formed between the exterior wall W and the lower wall surface W'. This space may be sealed by a sealing mechanism, the details of which will be described later.

[0017] In the window device 8, the window sash frame that forms the window opening is made up of an upper frame 80, a lower frame 81, and left and right vertical frames 82, 83, and the window opening is opened and closed by two sliding door elements 84, 85. A screen door 86 is provided on the outdoor side of the window sash frame. As shown in FIG. 1 , in this embodiment, the outdoor-side door element 84 is located closer to the outdoor side than the lower wall surface W', and approximately half of the lower frame 81 in the prospective direction projects outward from the lower wall surface W'.

[0018] [B] Manual operation mechanism The window shutter according to this embodiment is a manual type, and is configured to open and close the opening by manually raising and lowering the shutter curtain 5. When the opening is in a fully open state (see FIG. 3), the indoor window opening is at least partially opened (the door body 84 is partially opened), and an initial force is manually applied to move the base plate 7 downward to pull the shutter curtain 5 downward. The shutter curtain 5 in the wound state is unreeled as the winding shaft 2 rotates, and is manually closed, and when it has descended to a position close to the fully closed position, the shutter curtain 5 can be manually pushed downward, causing the base plate 7 of the shutter curtain 5 to land and assume a position to fully close the opening.

[0019] When the shutter curtain 5 descends, the balance spring is biased in the direction in which the winding shaft 2 winds up the shutter curtain 5 (the direction in which the shutter curtain 5 ascends), and when the seat plate 7 of the shutter curtain 5 lands on the floor and assumes a fully closed position, the locking device 11 is activated to lock the shutter curtain 5, thereby restricting the shutter curtain 5 from ascending.

[0020] In the locked state, the shutter curtain 5 in the fully closed position is biased in the upward direction (winding direction) (so-called "upward bias"). When the string-like member 114 is pulled upward to rotate the lever 113 upward and unlock the locking device 11, and the force pulling the string-like member 114 upward applies an initial force (upward direction) to the shutter curtain 5, the shutter curtain 5 rises while being wound up on the winding shaft 2 due to the biasing force of the balance spring, and the shutter curtain 5 can be opened manually to assume the fully open position.

[0021] In this embodiment, the floor surface FL and the lower portions of the side frames (guide rail base frame 3 + guide rail 4) are located below the window opening, so when the window shutter is in the fully closed position, the shutter curtain 5 includes an upper portion 5A located above the bottom edge of the window opening and a lower portion 5B located below the bottom edge of the window opening (see FIG. 1). Furthermore, because the gap between the bottom frame 81 of the window sash frame and the shutter core (the vertical plane on which the shutter curtain 5 is located when raised or lowered or in the fully closed position) is limited, it is difficult to insert a hand through the gap between the slat 50 and the bottom frame 81 and manually push the base panel 7 down to the floor surface FL. In other words, unless a hand can be inserted into the gap between the bottom frame 81 of the window sash frame and the slat 50 near the fully closed position, it is difficult to push the shutter curtain 5 down to the fully closed position.

[0022] In this embodiment, a handle 9 is provided on the indoor side of a predetermined slat 50 that forms the upper portion 5A of the shutter curtain 5, and when the shutter curtain 5 is lowered, the handle 9 can be manually moved downward from the window opening, and when the base plate 7 of the shutter curtain 5 is in a state where it is on the floor, the handle 9 and the slat 50 on which the handle 9 is provided are located in the window opening (above the lower frame 81). In other words, by placing one's hand on the handle, the slat can be pushed downward to the fully closed position. In this embodiment, the handle 9 is provided on the fourth slat 50 from the bottom (see FIG. 4). The handle 9 in this embodiment is made of steel (stainless steel, etc.).

[0023] The rolled-up state of the shutter curtain 5 when the opening is fully open is shown in Figure 3. When the opening is fully closed, the shutter curtain 5 is rolled up around the roll-up shaft 2 so that the outdoor side of the slats 50 is located closer to the roll-up shaft 2 and the indoor side is located farther from the roll-up shaft 2.

[0024] As shown in Figure 3, when the shutter curtain 5 is in a rolled-up state with the opening fully open, it includes an outermost portion 5C extending from the top (the portion closest to the top surface of the shutter case) to the base plate 7 located on the underside of the shutter case 6, and the handle 9 is provided on the indoor side of the slat 50 that forms the upper portion 5A and outermost portion 5C. By selecting the handle 9 from the slat 50 that forms the outermost portion 5C, the handle 9 will not come into contact with the top panel 60 or front panel 61 of the shutter case 6 when the shutter curtain 5 is rolled up, and will not interfere with the rolling-up of the slat 50.

[0025] The handle 9 is provided at a position biased toward the widthwise end of the slat 50 relative to the widthwise center (the side closer to one of the guide rails 4), and can be manually operated from inside the room with the window opening partially open (by opening the door body 84). In this embodiment, the handle 9 is located above the lever 113 of the locking device provided on the seat panel 7. In other words, the lever 113 of the locking device is also provided at a position biased toward the widthwise end of the slat 50 relative to the widthwise center (the side closer to one of the guide rails 4).

[0026] The locking device 11 has locking pieces 11A that can protrude and retract from both longitudinal ends of the seat panel 7, and when the opening is fully closed, the locking pieces 11A abut from below against locked pieces 11B in the guide grooves, thereby achieving a locked state (see Figures 2 and 6). More specifically, the locking device 11 has left and right latch bars 110, 111 each having a locking portion 11A at its tip, and an operating unit 112 that is provided at the base ends of the left and right latch bars 110, 111 and has an operating mechanism that slides the latch bars 110, 111 between a protruding position and a retracted position. The latch bars 110, 111 are slidable within a latch bar accommodating portion 700 that extends in the width direction on the surface of the seat panel 7, and the locking pieces are biased by a spring to maintain the protruding position. When a lever 113 of the operating unit 112 is rotated upward, the balance spring contracts and the locking pieces retract, thereby releasing the locked state.

[0027] The base end of a string-like member 114 is connected to lever 113, and a gripping portion 115 is provided at the tip of string-like member 114, with a magnet provided on gripping portion 115 as an attachment means. The magnet of gripping portion 115 is magnetically attached to, for example, a slat 50 on which handle 9 is provided, adjacent to handle 9, and when the opening is in the fully closed state, gripping portion 115 is located above the bottom frame 81 of the window opening. The slat 50 to which gripping portion 115 is magnetically attached is not limited to the slat 50 on which handle 9 is provided, but may be another slat 50 that constitutes an upper portion 5A located above the bottom end of the window opening. When the window shutter is to be opened while the opening is fully closed, the gripping portion 115 is grasped and the string-like member 114 is pulled upward, causing the lever 113 to rotate upward and the locked state to be released. At the same time, an initial force in the upward direction is applied to the shutter curtain 5, and the shutter curtain 5 rises while being wound up on the winding shaft 2 due to the force of the balance spring. By lifting the shutter curtain 5 by holding the seat plate 7, the window shutter is opened.

[0028] The handle 9 is fixed to the indoor side of a given slat 50 by a fixing means. The slat 50 according to this embodiment comprises a curved plate-shaped main body 500, an upper interlocking portion 501 integrally formed at the upper end of the main body 500, and a lower interlocking portion 502 integrally formed at the lower end of the main body 500. The main body 500 has a dish-like cross section and is curved so as to bulge toward the indoor side. The upper and lower portions of the main body 500 of the slat 50 are located on the outdoor side (farther from the building frame) than the central portion; in other words, the central portion is located on the indoor side (closer to the building frame) than the upper and lower portions.

[0029] As shown in Figures 5 and 7, the handle 9 in this embodiment consists of a main body having a U-shaped cross section formed from an upper horizontal piece 90, a lower horizontal piece 91, and a vertical surface portion 92, and a handle piece 93 extending horizontally from the vertical surface portion 92 to the opposite side of the upper horizontal piece 90 and the lower horizontal piece 91.

[0030] The handle 9 is fixed to the indoor side portion of the slat 50 by a fixing means, with the upper horizontal piece 90 abutting or engaging with the upper portion of the main body 500 (the base end of the upper interlock portion) and the lower horizontal piece 91 abutting or engaging with the lower portion of the main body 500 (which may be the base end of the lower interlock portion), and with the vertical surface portion 92 abutting against the central portion of the main body 500.

[0031] The handle 9 abuts against the slat 50 at three points: where the tip of the upper horizontal piece 90 engages with the upper part of the main body 500; where the tip of the lower horizontal piece 91 engages with the lower part of the main body 500; and where the vertical surface 92 connects with the central part of the main body 500.When the handle piece 93 of the handle 9 is pressed downward, the downward force is transmitted to the slat 50 in an efficient and stable manner, so that no biased force acts on the handle 9 and the durability of the handle 9 is also good.

[0032] The fixing means in this embodiment consists of a flat screw 94 and a cap nut 95, and by reducing the projected dimensions of the fixing means, the fixing means does not interfere with the winding of the shutter curtain 5 or its raising and lowering through the lintel portion (the opening formed between the bottom panel 62 of the shutter case 6 and the bottom panel 67 of the main body in FIG. 3). In a side view of the slat 50 with the handle 9 attached, the flat screw 94 is contained within the thickness of the main body portion 500, and the cap nut 95 is contained inside the handle piece 93 of the handle 9.

[0033] In the manual closing mechanism configured as described above, when the window shutter is opened from a fully closed state of the opening, the door body 84 of the window device 8 is opened, and the gripping portion 115 is grasped from the window opening and the string-like member 114 is pulled upward, causing the lever 113 to rotate upward and the locked state to be released. At the same time, an initial force in the upward direction is applied to the shutter curtain 5, and the shutter curtain 5 rises while being wound up on the winding shaft 2 due to the force of the balance spring, and by applying an upward force as appropriate to lift the seat plate 7 upward, the window shutter is placed in an open state. When closing the window shutter from a fully open state, the door body 84 of the window device 8 is opened, and the seat board 7 and the slats 50 are manually lowered while applying an initial force by placing a hand on the indoor side portion of the flat portion 71 of the seat board 7 from the window opening, and after the seat board 7 has descended below the lower frame 81 of the window opening, the hand is placed on the handle 9 from the window opening and the slats 50 are pushed downward to the fully closed state.

[0034] [C] Seat structure [C-1] First embodiment As shown in FIG. 8 , the seat panel 7 according to the first embodiment is a long member extending in the opening width direction, and is composed of a vertical portion 70 and a flat portion 71 integrally formed at the lower end of the vertical portion 70, with a generally inverted T-shaped cross section. The vertical portion 70 has a thickness smaller than the groove width of the guide rail 4, and has a visible width dimension (length dimension) such that both longitudinal end portions are located within the groove of the guide rail 4. The flat portion 71 has a predetermined visible width extending in the indoor / outdoor direction, and both longitudinal end portions are located outside the guide rail 4. The vertical portion 70 of the seat panel 7 is located on the shutter core, and the flat portion 71 is divided into an outdoor portion and an indoor portion across the shutter core, and in the illustrated embodiment, the visible dimension of the outdoor portion is larger than the visible dimension of the indoor portion.

[0035] A latch bar storage section 700 is formed on the indoor surface of the vertical section 70 across the apparent width direction (length direction) of the seat panel 7, and left and right latch bars 110, 111 each having a locking section 11A at its tip are stored in the storage section 700. An operating section 112 is provided in the storage section 700 on the side closer to one of the guide rails 4. Stoppers 701 with horizontal contact surfaces (upper surfaces) are provided on the outdoor surface of the vertical section 70, positioned on the left and right in the width direction, and when the opening is fully open, the contact surfaces of the stoppers 701 come into contact with the bottom surface (bottom panel 62) of the shutter case 6 (Fig. 3).

[0036] The flat section 71 comprises a horizontal upper surface section 710, thick outdoor-side hanging pieces 711 and indoor-side hanging pieces 712 that hang down integrally from the outdoor-side and indoor-side ends of the upper surface section 710, respectively, and a mounting section (pocket section) 713 for a shock absorber 714 formed at the middle of the upper surface section in the projected width direction (front-to-back direction), and the upper end of the fin-shaped shock absorber 714 extending in the projected width direction (lengthwise direction of the seat panel 7) is mounted to the mounting section 713. The shock absorber 714 has a relatively large height so that it can deform to follow the slope of the floor surface FL. Cover members 715 are attached to the longitudinal ends of the flat section 71 of the seat panel 7.

[0037] [C-2] Second embodiment As shown in FIG. 9 , the seat panel 7 according to the second embodiment is a long member extending in the opening width direction. It comprises a vertical portion 70 and a flat portion 72 integrally formed at the lower end of the vertical portion 70, and has a generally inverted T-shaped cross section. The vertical portion 70 has a thickness smaller than the groove width of the guide rail 4, and has a visible width dimension (length dimension) such that both longitudinal ends are located within the groove of the guide rail 4. The flat portion 72 has a predetermined visible width extending in the indoor / outdoor direction, and both longitudinal ends are located outside the guide rail 4. The vertical portion 70 of the seat panel 7 is located on the shutter core, and the flat portion 72 is divided into an outdoor portion and an indoor portion across the shutter core. In the illustrated embodiment, the visible dimension of the outdoor portion is larger than the visible dimension of the indoor portion.

[0038] A latch bar storage section 700 is formed on the indoor surface of the vertical section 70 along the length of the seat plate 7 (opening width direction), and left and right latch bars 110, 111 each having a locking section 11A at its tip are stored in storage section 700. An operating section 112 is provided on the side of storage section 700 closer to one of the guide rails 4. Stoppers 701 with horizontal contact surfaces (upper surfaces) are provided on the outdoor surface of the vertical section 70, positioned on the left and right in the width direction, and when the opening is fully open, the contact surfaces of the stoppers 701 come into contact with the bottom surface (bottom panel 62) of the shutter case 6 (Fig. 3).

[0039] The flat portion 72 has a hollow portion extending in the visible width direction (length direction) of the base panel 7, and a long reinforcing member 73 extending in the visible width direction of the flat portion 72 is provided in the hollow portion. The reinforcing member 73 has a U-shaped cross section, consisting of an upper surface portion 730 and an outdoor-side hanging piece 731 and an indoor-side hanging piece 732 that hang down integrally from the outdoor-side end and indoor-side end of the upper surface portion. The cross-sectional shape of the reinforcing member 73 is not limited, and may be, for example, a long plate of a predetermined thickness. The central portion of the reinforcing member 73 in the visible direction is located on the shutter core.

[0040] The seat panel 7 according to this embodiment is made of aluminum, and the reinforcing material 73 is made of a metal (such as steel) with a higher melting point than aluminum. By providing the reinforcing material 73 on the flat portion 72 of the seat panel 7, even if the seat panel 7 tries to deform due to heat during a fire, the reinforcing material 73 suppresses thermal deformation (warping), and prevents as much as possible the formation of gaps between the seat panel 7 and the floor surface FL, which are disadvantageous in terms of fire prevention.

[0041] Flat portion 72 comprises a horizontal upper surface portion 720, thick outdoor-side hanging pieces 721 and indoor-side hanging pieces 722 that hang down integrally from the outdoor-side end and indoor-side end of upper surface portion 720, respectively, an intermediate hanging piece 723 that hangs down from upper surface portion 720 facing and spaced apart from outdoor-side hanging piece 721, and a lower surface portion 724 that horizontally connects intermediate vertical piece 723 and indoor-side hanging piece 712, and a hollow portion is formed by upper surface portion 720, intermediate hanging piece 723, indoor-side hanging piece 722, and lower surface portion 724, and a reinforcing member 73 is provided in the hollow portion. By accommodating reinforcing member 73 in the hollow portion, reinforcing member 73 can be provided to base plate 7 without being fixed.

[0042] In the illustrated embodiment, the hanging dimension of intermediate hanging piece 723 is shorter than outdoor-side hanging piece 721 and indoor-side hanging piece 722, the lower end of intermediate hanging piece 723 is located slightly above the lower ends of outdoor-side hanging piece 721 and indoor-side hanging piece 722, and lower surface portion 724 is also located slightly above the lower end of indoor-side hanging piece 722. How the hollow portion is formed is not limited to the illustrated embodiment.

[0043] A mounting portion (pocket portion) 725 for a shock absorbing member is formed at a position midway in the visible width direction (front-to-rear direction) of the underside portion 724 of the flat portion 72, and the upper end portion of a fin-shaped shock absorbing member 726 extending in the visible width direction (length direction of the seat panel 7) is mounted to the mounting portion 725. In the illustrated embodiment, the shock absorbing member 726 is smaller in size than the shock absorbing member 714, but the shape and size of the shock absorbing member 726 are not limited thereto, and it may be as long as the shock absorbing member 714. A cover member 727 is mounted to the end in the length direction of the flat portion 72 of the seat panel 7, and the end in the visible width direction of the hollow portion is closed.

[0044] [C-3] Third embodiment As shown in FIG. 10 , the seat panel 7 according to the third embodiment is a long member extending in the width direction of the opening. It comprises a vertical portion 70 and a flat portion 74 integrally formed at the lower end of the vertical portion 70, and has a generally inverted T-shaped cross section. The vertical portion 70 has a thickness smaller than the groove width of the guide rail 4, and has a visible width dimension (length dimension) such that both longitudinal ends are located within the groove of the guide rail 4. The flat portion 74 has a predetermined visible width extending in the indoor / outdoor direction, and both longitudinal ends are located outside the guide rail 4. The vertical portion 70 of the seat panel 7 is located on the shutter core, and the flat portion 74 is divided into an outdoor portion and an indoor portion across the shutter core. In the illustrated embodiment, the visible dimension of the outdoor portion is smaller than the visible dimension of the indoor portion. The vertical portion 70 may also be configured to rise from the center of the visible width of the flat portion 74.

[0045] A latch bar storage section 700 is formed on the indoor surface of the vertical section 70 along the length of the seat plate 7 (opening width direction), and left and right latch bars 110, 111 each having a locking section 11A at its tip are stored in storage section 700. An operating section 112 is provided on the side of storage section 700 closer to one of the guide rails 4. Stoppers 701 with horizontal contact surfaces (upper surfaces) are provided on the outdoor surface of the vertical section 70, positioned on the left and right in the width direction, and when the opening is fully open, the contact surfaces of the stoppers 701 come into contact with the bottom surface (bottom panel 62) of the shutter case 6 (Fig. 3).

[0046] The flat portion 74 has a hollow portion extending in the visible width direction (length direction) of the seat panel 7, and the hollow portion is provided with a long reinforcing member 75 extending in the visible width direction of the flat portion 74. The reinforcing member 75 has a U-shaped cross section made up of an upper surface portion 750 and an outdoor-side hanging piece 751 and an indoor-side hanging piece 752 that hang down integrally from the outdoor-side end and indoor-side end of the upper surface portion 750. The cross-sectional shape of the reinforcing member 75 is not limited, and may be, for example, a long plate of a predetermined thickness.

[0047] The seat panel 7, including the flat portion 74, is made of aluminum, and the reinforcing material 75 is made of a metal (such as steel) with a higher melting point than aluminum. By providing the reinforcing material 75 to the flat portion 74 of the seat panel 7, even if the seat panel 7 tries to deform due to the heat during a fire, the reinforcing material 75 suppresses thermal deformation (warping), and prevents as much as possible the formation of gaps between the seat panel 7 and the floor surface FL, which are disadvantageous in terms of fire prevention.

[0048] In the illustrated embodiment, the height dimension of the flat portion 74 according to the third embodiment is greater than the height dimension of the flat portion 72 according to the second embodiment, and the projected width dimension is smaller than the projected width dimension of the flat portion 72.

[0049] Flat portion 74 includes a horizontal upper surface portion 740, thick outdoor-side hanging pieces 741 and indoor-side hanging pieces 742 that hang down integrally from the outdoor-side end and indoor-side end of upper surface portion 740, respectively, and a lower surface portion 743 that horizontally connects a lower portion of outdoor-side hanging piece 741 and a lower portion of indoor-side hanging piece 742. Upper surface portion 740, outdoor-side hanging piece 741, indoor-side hanging piece 742, and lower surface portion 743 form a hollow portion, and reinforcing material 75 is provided in the hollow portion. By accommodating reinforcing material 75 in the hollow portion, it can be provided to base plate 7 without being fixed. Note that the manner in which the hollow portion is formed is not limited to the illustrated embodiment.

[0050] Lower surface portion 743 is located slightly above the lower ends of outdoor-side hanging piece 741 and indoor-side hanging piece 742, and three pockets are formed on the underside of lower surface portion 743 in the projected width direction. A mounting portion (pocket portion) 744 for a buffer member is provided at a position midway in the projected width dimension (front-to-back direction) of lower surface portion 743 of flat portion 74, and the upper end portion of fin-shaped buffer member 745 extending in the opening width direction is mounted to mounting portion 744. In the illustrated embodiment, buffer member 745 is smaller in size than buffer member 714, but the shape and size of buffer member 745 are not limited thereto and may be long like buffer member 714.

[0051] On the underside 743, an outdoor pocket is formed on the outdoor side of the mounting portion 744, and an indoor pocket is formed on the indoor side, with the outdoor pocket being provided with an outdoor thermal expansion fire-resistant member 746, and the indoor pocket being provided with an indoor thermal expansion fire-resistant member 747. Cover members 748 are attached to the longitudinal ends of the flat portion 74 of the seat panel 7, and the visible widthwise ends of the hollow portion are closed.

[0052] A buffer member 745 is provided on the underside 743 of the hollow part of the flat part 74 of the seat panel 7, located midway in the projected width direction and extending in the projected width direction (the length direction of the seat panel 7), with an outdoor-side thermal-expansion fire-resistant member 746 located on the outdoor side of the buffer member 745 and an indoor-side thermal-expansion fire-resistant member 747 located on the indoor side of the buffer member 745, so as to sandwich the buffer member 745 from the front and rear. The outdoor-side thermal-expansion fire-resistant member 746 is located on the outdoor side of the shutter core, and the indoor-side thermal-expansion fire-resistant member 747 is located on the indoor side of the shutter core.

[0053] By providing the thermally expandable fire-resistant members 746, 747 adjacent to the cushioning member 745 on the underside 743 of the seat panel 7, even if the seat panel 7 is thermally deformed (warped) (please note that in this embodiment, warping is suppressed by the reinforcing material 75), the thermally expandable fire-resistant members 746, 747 will foam and close the gap between the underside 743 of the seat panel 7 and the floor surface FL, thereby preventing as much as possible the formation of a gap between the underside 743 of the seat panel 7 and the floor surface FL that is disadvantageous in terms of fire prevention.

[0054] In addition, in the event of a fire, the thermally expandable fire-resistant members 746, 747 foam to sandwich the buffer member 745 from both the indoors and outdoors, closing the gap between the underside 743 of the seat panel 7 and the floor surface FL, preventing as much as possible the formation of a gap that would be disadvantageous in terms of fire prevention between the seat panel 7 and the floor surface FL, and even if the buffer member 745 melts due to the heat during a fire, preventing as much as possible the ignition of the melted buffer member 745. Note that the arrangement of the thermally expandable fire-resistant members is not limited, and for example, even if only one of the thermally expandable fire-resistant members 746, 747 laid flat in the projected width direction is provided, the effect of closing the gap in the event of a fire is achieved.

[0055] [D] Case support structure [D-1] Shutter case The shutter case 6 comprises an upper panel 60, a front panel 61, a lower panel 62, and left and right side panels (not shown), and is formed into a box shape by being supported and connected to a framework fixed to the main body (exterior wall W). The components of the shutter case 6 in this embodiment are made of steel (steel, stainless steel, etc.). As shown in Figure 3, a winding shaft 2 is provided inside the shutter case 6, and when the window shutter is in a fully open state, the shutter curtain 5 is housed inside the shutter case 6 while wound around the winding shaft 2. An opening is formed on the main body side of the lower panel 62 through which the shutter curtain 5 moves up and down, and when the window shutter is in a fully open state, the seat plate 7 at the bottom of the shutter curtain 5 is positioned in the opening.

[0056] [D-2] Framework The framework of the shutter case 6 consists of left and right brackets 1 and multiple case angles connected to bridge between the left and right brackets 1. Bracket 1 consists of a roughly trapezoidal surface 10 having a shape and dimensions corresponding to the cross-sectional shape and dimensions of the shutter case 6, and a rear piece 100, an upper piece 101, a front piece 102, and a lower piece 103 formed by bending the periphery of surface 10 in a rising shape relative to surface 10.

[0057] As shown in Figure 3, the multiple case angles of this embodiment, when viewed in cross section, include a first case angle 63 extending horizontally in the length direction of the winding shaft 2 on the upper indoor side of the shutter case 6 (the side closer to the exterior wall W), a second case angle 64 extending horizontally in the length direction of the winding shaft 2 on the upper outdoor side of the shutter case 6 (the side farther from the exterior wall W), a third case angle 65 extending horizontally in the length direction of the winding shaft 2 on the lower indoor side of the shutter case 6 (the side closer to the exterior wall W), and a fourth case angle 66 extending horizontally in the length direction of the winding shaft 2 on the lower outdoor side of the shutter case 6 (the side farther from the exterior wall W).

[0058] The longitudinal end of the first case angle 63 is connected to the upper end of the rear piece 100 of the left and right bracket 1, the longitudinal end of the second case angle 64 is connected to the upper end of the front piece 102 of the left and right bracket 1, the longitudinal end of the third case angle 65 is connected to the indoor side portion of the lower piece 103, and the longitudinal end of the fourth case angle 66 is connected to the lower end of the front piece 102.

[0059] The framework assembled from the left and right brackets 1 and the first case angle 63, second case angle 64, third case angle 65, and fourth case angle 66 is connected via the first case angle 63 to a number of hook fittings fixed at predetermined locations on the exterior wall W of the body at intervals in the width direction.

[0060] [D-3] First case angle The first case angle 63 is a long member extending in the visible width direction of the shutter case 6, and is formed from a vertically extending back portion 630, an upper piece 631 extending from the upper end of the back portion 630 toward the outdoors (in the direction away from the exterior wall W), a hanging piece 632 hanging downward from the tip of the upper piece 631, and a lower piece 633 extending from the lower end of the back portion 630 toward the outdoors (in the direction away from the exterior wall W). The first case angle 63 is a so-called C-shaped case angle.

[0061] The tip portion 600 (portion close to the outer wall W) of the top plate 60 of the shutter case 6 is placed on the upper piece 631 of the first case angle 63. A notch 634 (see FIG. 16) is formed in the base end portion (corner with the back surface portion 630) of the upper piece 631 of the first case angle 63 to correspond to the hook, and serves as a hook portion on the upper side of the first case angle 63.

[0062] 13 and 18, the multiple hooks according to this embodiment consist of left and right end hooks 12 and a middle hook 13. Both longitudinal ends of the first case angle 63 are hooked onto the left and right end hooks 12, and the longitudinal center portion is hooked onto the middle hook 13.

[0063] 16, the support member 14 is fixed to the longitudinal center of the back surface 630 of the first case angle 63, and the first case angle 63 and the support member 14 are integrated together. The support member 14 has a lower portion located below the lower piece 633 of the first case angle 63, and the lower portion of the support member 14 is adapted to be locked to the lower locked portion of the intermediate hook fitting 13.

[0064] [D-4] End hook fitting The end hook fitting 12 comprises a surface portion 120 fixed to the frame (exterior wall W), a hooked piece 121 formed integrally with the upper end of the surface portion 120 in a folded-back manner, and an upwardly inclined piece 122 folded back on the lower portion of the surface portion 120, and is designed so that the upper side of the first case angle 63 is hooked onto the hooked piece 121, the rear piece 100 of the bracket 1 abuts against or is close to the surface portion 120, and the upwardly inclined piece 1000 at the lower end of the rear piece 100 abuts against the inclined piece 122 and is fixed with a screw. Such end hook fittings 12 are known, and reference can be made to Japanese Patent Application Laid-Open No. 2017-31597 for the configuration of an end hook fitting.

[0065] The tip portion 600 (the portion close to the exterior wall W) of the top panel 60 of the shutter case 6 is placed on the upper piece 631 of the first case angle 63, so the load of the shutter case 6 acts on it. If the central portion of the first case angle 63 in the longitudinal direction were to be displaced in a direction away from the main body, there is a risk that the shutter case 6 will fall over. In this embodiment, the first case angle 63, on which the load of the shutter case 6 acts, is supported by hook fittings at both ends in the longitudinal direction and at the central portion, thereby improving the holding force of the shutter case 6.

[0066] [D-5] Support structure for the first case angle using intermediate hook fittings The intermediate hook fitting 13 comprises a surface portion 130 fixed to the body (exterior wall W), a hooking piece 131 integrally formed in a folded shape at the upper end of the surface portion 130, and a locked portion formed on the surface portion 130 located below the hooking piece 131, so that the upper side of the first case angle 63 is hooked onto the hooking piece 131 and the lower side is locked onto the locked portion. As described above, a support member 14 is fixed to the longitudinal center portion of the back portion 630 of the first case angle 63, and the support member 14 has a lower portion located below the lower piece 633 of the first case angle 63, so that the lower portion of the support member 14 is locked onto the locked portion on the lower side of the intermediate hook fitting 13 (see Figure 16).

[0067] [D-5-1] First embodiment 14, the intermediate hook fitting 13 according to the first embodiment comprises a vertically rectangular face portion 130, a latched piece 131 formed integrally in a folded-back shape at the upper end of the face portion 130, an opening 132 formed in the face portion 130 below the latched piece 131, and a protruding piece 133 positioned below the opening 132 and extending upright from the face portion 130. The protruding piece 133 formed to protrude upright from the face portion 130 of the intermediate hook fitting 13 serves as the lower latched part.

[0068] As shown in the upper diagram of Figure 15, the support member 14 of the first embodiment is formed from a horizontally rectangular surface portion 140, an inclined piece 141 at the lower end of the surface portion 140 that inclines downward so as to move away from the main body (exterior wall W), a lower piece 142 that extends from the lower end of the inclined piece 141 toward the main body (exterior wall W), and a bent piece 143 that extends downward from the tip of the lower piece 142.

[0069] 16, the face portion 140 of the support member 14 is fixed in an overlapping state to the longitudinal center portion of the back portion 630 of the first case angle 63 (in the illustrated embodiment, it is fixed with rivets, but other means, such as welding, may also be used). The lower portion of the support member 14 (the inclined piece 141, the lower piece 142, and the bent piece 143) is located below the lower piece 633 of the first case angle 63.

[0070] 12, in the first embodiment, the lower end of the bent piece 143 at the tip of the lower piece 142 of the support member 14 is located within the opening 132 formed in the surface portion 130 of the intermediate hook fitting 13, and the base end portion of the lower piece 142 (the side farther from the body and closer to the inclined piece 141) is supported by the upper end of the protruding piece 133 of the intermediate hook fitting 13, so as to support the load of the shutter case 6 acting on the first case angle 63. Furthermore, the abutment of the hanging surface of the bent piece 143 of the support member 14 with the outer wall W provides a more stable support state.

[0071] The first case angle 63 is hooked to the hook piece 131 at the upper cutout 634, and the upper end of the protruding piece 133 is hooked or abuts from below against the base end of the lower piece 142 of the support member 14 that is integrated with the first case angle 63. Even if the upper hook piece 131 deforms to open (for example, due to thermal deformation caused by heat during a fire) and the first case angle 63 and support member 14 attempt to displace in a direction away from the body, the hooked state between the lower piece 142 and the protruding piece 133 is maintained, and the lower locking state will not be released. Furthermore, if the lower portion of the first case angle 63 (the lower portion of the support member 14) moves away from the body, the bent piece 143 at the lower portion of the support member 14 will hook onto the protruding piece 133.

[0072] [D-5-2] Second embodiment 19, the intermediate hook fitting 13 according to the second embodiment comprises a vertically rectangular surface 130, a latched piece 131 integrally formed in a folded-back shape at the upper end of the surface 130, and an opening 132 formed in the surface 130 below the latched piece 131. The lower latched portion consists of the lower edge of the opening 132 formed in the surface 130 of the intermediate hook fitting 13.

[0073] As shown in the lower diagram of Figure 15, the support member 14 of the second embodiment consists of a horizontally rectangular surface portion 140, an inclined piece 141 at the lower end of the surface portion 140 that inclines downward so as to move away from the main body, and a lower piece 142 that extends from the lower end of the inclined piece 141 toward the main body.

[0074] 16, the face portion 140 of the support member 14 is fixed in abutting, overlapping state to the longitudinal center portion of the back portion 630 of the first case angle 63 (in the illustrated embodiment, it is fixed with rivets, but other means, such as welding, may also be used). The lower portion of the support member 14 (the inclined piece 141, the lower piece 142) is located below the lower piece 633 of the first case angle 63.

[0075] As shown in Figure 17, in the second embodiment, the tip end portion (the side closer to the main body, the side farther from the inclined piece 141) of the lower piece 142 of the support member 14 is engaged with and supported by the lower edge portion of the opening 132 formed in the surface portion 130 of the intermediate hook fitting 13, so as to support the load of the shutter case 6 acting on the first case angle 63.

[0076] The first case angle 63 is hooked onto the hooked piece 131 at the upper cutout portion 634, and the tip portion of the lower piece 142 of the support member 14 integrated with the first case angle 63 is engaged or abuts against the lower edge portion of the opening 132 from above.

[0077] [E] Window shutter side frame The side frames of the window shutter according to this embodiment are made up of a guide rail base frame 3 that projects from the exterior wall W, and a guide rail 4 that is connected to the tip end of the guide rail base frame 3. The guide rail base frame 3 and guide rail 4 according to this embodiment are formed from aluminum extrusions, but the materials for the guide rail base frame 3 and guide rail 4 are not limited. The configurations of the guide rail base frame 3 and guide rail 4 according to this embodiment will be described in detail below.

[0078] [E-1] Guide rail base frame The guide rail base frame 3 is a long member extending perpendicular to the height direction of the opening. As shown in FIG. 21, it comprises a base-end facing surface 30 fixed to the exterior wall W, an outer facing edge 31 extending in the facing direction from the outside of the base-end facing surface 30 so as to move away from the exterior wall W, an inner facing edge 32 extending in the facing direction from the inside of the base-end facing surface 30 so as to move away from the exterior wall W, an intermediate facing edge 33 extending from the tip of the inner facing edge 32 in a direction moving away from the outer facing edge 31, and a leading facing piece 34 extending in the facing direction from the tip of the intermediate facing edge 33 so as to move away from the exterior wall W. The outer facing edge 31 forms the facing surface of the side frame, and a locking piece 310 is integrally formed at the tip of the outer facing edge 31. The leading facing piece 34 serves as a connecting piece to the guide rail 4.

[0079] A reinforcing member 15 having a U-shape in cross section is fixed inside the lower portion of the guide rail base frame 3. The reinforcing member 15 has a visible edge 150, an outer visible edge 151 extending in the visible direction, and an inner visible edge 152, and is fixed with screws with the visible edge 150 abutting against the inner surface of the base-end visible surface 30 of the guide rail base frame 3, the outer visible edge 151 abutting against or close to the inner surface of the outer visible edge 31 of the guide rail base frame 3, and the inner visible edge 152 abutting against the inner surface of the inner visible edge 32 of the guide rail base frame 3.

[0080] [E-2] Guide rail The guide rail 4 is a long member that extends perpendicular to the height direction of the opening, and as shown in Figure 21, has a roughly U-shaped shape in a plan view, consisting of a side edge (outdoor side facing) 40 that is farther from the exterior wall W, a side edge (outdoor side facing) 41 that is closer to the exterior wall W, and a bottom edge 42, and a guide groove is formed between the opposing side edges 40, 41 that receives both widthwise ends of the shutter curtain 5 and guides it in the vertical direction.

[0081] An extension edge 400 is integrally formed on the base end of the side edge 40, extending beyond the bottom edge 42 in a direction away from the opening, and the side edge 40 and the extension edge 400 form the visible surface of the side frame. The end of the extension edge 400 is bent toward the indoor side, and an engagement piece 401 is integrally formed. An extension piece 410 that extends toward the indoor side is integrally formed on the side edge 41, and the extension piece 410 serves as a connecting piece to the guide rail base frame 3.

[0082] [E-3] Side frame A side frame is formed from the guide rail base frame 3 and the guide rail 4. The guide rail base frame 3 is provided in a protruding shape relative to the exterior wall W by abutting its base end facing surface 30 against the exterior wall W and fixing it to the main body (exterior wall W) with multiple screws 300 along the height direction. The height dimension of the reinforcing member 15 is greater than the height dimension of the rising part of the waterproofing membrane 20 (height position L of the upper end is shown in Figure 20), and it has an upper part located above the rising part, and a facing edge 150 of the upper part abuts against the base end facing surface 30, and the base end facing surface 30 and the facing edge 150 are fixed together to the main body (exterior wall W) using screws 301. The engaging piece 401 of the guide rail 4 is engaged with the locking piece 310 on the outer projected edge 31 of the guide rail base frame 3, and the extending piece 410 (connecting piece) of the guide rail 4 is abutted against the tip projected piece 34 (connecting piece) of the guide rail base frame 3, and the two are fixed together with screws 340 in an overlapping state to form a single unit.

[0083] Side frames consisting of guide rail base frames 3 and guide rails 4 are well known to those skilled in the art, and the shapes and connection configurations of the guide rail base frames 3 and guide rails 4 are not limited to those shown in the drawings. The upper parts of the left and right side frames abut against the lower parts of the shutter case 6 (body-side lower panel 67). No drip boards (lower frames) are provided in the lower parts of the left and right side frames. The lower ends of the side frames abut (including partial abutment) or are close to (including partial close to) the floor surface FL.

[0084] In the window shutter according to this embodiment, a bottom closing member 16 is provided in the lower portion of the side frame. As shown in FIG. 24, the bottom closing member 16 has a bottom surface portion 160, which has substantially the same shape and dimensions as the cross-sectional shape and dimensions of the side frame, and is designed to cover the lower end of the side frame. Two rising pieces 161, 162 are formed on the bottom surface portion 160. The rising piece 161 abuts against the lower end of the projected surface (outer projected edge 31) of the side frame from the outside and is fixed with a rivet (or a screw), and the rising piece 162 abuts against the lower end of the projected piece (intermediate projected edge 33) of the side frame from the outside and is fixed with a rivet (or a screw). The bottom closing member 16 according to this embodiment is made of steel (stainless steel, etc.).

[0085] [F] Means for sealing the gap in the lower part of the side frame of a window shutter In this embodiment, the lower wall surface W' is located indoors relative to the exterior wall W to which the guide rail base frame 3 and the shutter case 6 are attached. The lower portions of the side frames in this embodiment are located below the window device 8, and these lower portions are spaced outdoors from the lower wall surface W', and gaps are formed between the lower portions of the left and right side frames and the lower wall surface W'. More specifically, a skeleton middle underside W" is formed from the upper end of the lower wall W' to the exterior wall W. At the lower portions of the left and right side frames, a vertically rectangular gap is formed in a side view, which is formed by the base-end facing surfaces of the side frames (base-end facing surfaces 30 of the guide rail base frame 3), the lower wall W', the floor FL, and the skeleton middle underside W". The outdoor side of the gap is defined by the base-end facing surfaces 30, the indoor side of the gap is defined by the lower wall W', the lower side of the gap is defined by the floor FL, and the upper side of the gap is defined by the skeleton middle underside W" (see FIG. 20). The formation of such a gap can cause problems, such as light leakage and a reduction in design quality due to the gap being visible from the exterior. Therefore, it is desirable to seal this gap with a gap sealing means. In this embodiment, three types of gap sealing means, namely, a first embodiment, a second embodiment, and a third embodiment, are disclosed.

[0086] [F-1] First embodiment A first embodiment of the gap closing means will be described with reference to Figures 22 to 26. The gap closing means according to the first embodiment comprises a first member 17 fixed to a lower portion of the base-end visible surface 30 of the guide rail base frame 3, and a second member 18 whose height position is adjustable relative to the first member 17. Because the height dimension of the gap closing means according to the first embodiment is variable, it can effectively accommodate cases in which the height dimension of the gap varies depending on the site, or when the height dimension of the left and right gaps differs due to the inclination of the floor surface FL in the opening width direction.

[0087] 25, the first member 17 is a long member extending in the height direction and comprises a visible edge 170, a first visible edge 171 extending from one end of the visible edge 170, an intermediate visible edge 172 extending in the height direction from the tip of the first visible edge 171 so as to face the visible edge 170, and a second visible edge 173 extending in the height direction from the tip of the intermediate visible edge 172 in a direction away from the visible edge 170, and is provided with an upper edge 174 and a lower edge 175. Two holes 1700 are formed in the visible edge 170 at an interval in the height direction so as to allow the insertion of a bolt of the fixing means 176 (bolt and nut).

[0088] The visible width of the visible edge 170 of the first member 17 is approximately the same as the visible width of the base-end visible surface 30 of the guide rail base frame 3, and the visible width of the intermediate visible edge 172 is shorter than the visible width of the visible edge 170. The first visible edge 171, the intermediate visible edge 172, and the second visible edge 173 form the visible portion of the first member 17 (first visible portion of the gap closing means), and the sum of the visible dimension of the first visible edge 171 and the visible dimension of the second visible edge 173 is the visible dimension of the first member 17.

[0089] As shown in the left diagram of Figure 25, second member 18 is a long member extending in the height direction and extends in the projection direction as a whole. It is composed of first projection edge 180, intermediate projection edge 181 extending in the projection direction from the end of first projection edge 180, and second projection edge 182 extending in the projection direction from the end of intermediate projection edge 181 on the opposite side to first projection edge 180 (the entire second member 18 is the second projection portion of the gap closing means), and has upper edge 183 and lower edge 184. Two holes 1800 are formed in first projection edge 180 at an interval in the height direction, and are designed to allow screws 185 to be inserted therethrough. The projection dimension of second member 18 is the sum of the projection dimension of first projection edge 180 and the projection dimension of second projection edge 182.

[0090] In this embodiment, the height dimensions of the first member 17 and the second member 18 are approximately the same, the projected portion of the first member 17 (first projected edge 171, intermediate projected edge 172, and second projected edge 173) and the second member 18 have approximately the same cross-sectional shape and dimensions, and the projected dimensions of the first member 17 and the second member 18 are approximately the same. The height dimensions of the first member 17 and the second member 18 are lower than the height dimension of an expected gap, and the projected dimensions of the first member 17 and the second member 18 are smaller than the projected width of the expected gap.

[0091] The first projected edge 171 of the first member 17 and the first projected edge 180 of the second member 18, the intermediate projected edge 172 of the first member 17 and the intermediate projected edge 181 of the second member 18, and the second projected edge 173 of the first member 17 and the second projected edge 182 of the second member 18 are all approximately the same width, and the second member 18 overlaps the outer surface of the projected portion of the first member 17 to form a gap sealing means, allowing the second member 18 to slide vertically relative to the first member 17.

[0092] The right image in Figure 26 shows a first state in which the projection portion of the first member 17 and the second member 18 overlap over the entire height, with the upper edge 174 of the first member 17 and the upper edge 183 of the second member 18 coinciding, and the lower edge 175 of the first member 17 and the lower edge 184 of the second member 18 coinciding.

[0093] 26 shows a second state in which the second member 18 has slid upward relative to the projected portion of the first member 17 from the state shown in the right diagram, and the projected portion of the first member 17 and the second member 18 partially overlap in the height direction. An upper edge 183 of the second member 18 is higher than an upper edge 174 of the first member 178, and a lower edge 175 of the first member 17 is lower than a lower edge 184 of the second member 18.

[0094] In the right diagram of Fig. 26, the gap closing means is in a first state and has a first height dimension, and in the left diagram of Fig. 26, the gap closing means is in a second state and has a second height dimension that is higher than the first height dimension, and the projected width of the gap closing means is the same in the first and second states. In Fig. 22, the gap closing means is in the first state, and in Fig. 23, the gap closing means is in the second state.

[0095] 24, the first member 17 is fixed by fixing means 176 (bolts and nuts) with the visible edge 170 abutting against the outer surface of the base-end visible surface 30 of the guide rail base frame 3. In the illustrated embodiment, the visible edge 150 of the reinforcing member 15 abuts against the inner surface of the base-end visible surface 30, and the visible edge 150, base-end visible surface 30, and visible edge 170 are fixed together by the fixing means 176. The first visible edge 171 of the first member 17 is approximately flush with the outer visible edge 31 of the guide rail base frame 3 (it is located inward by the thickness of the first visible edge 180 of the second member 18) and extends toward the lower wall surface W', and the tip of the second visible edge 173 is spaced apart from the lower wall surface W'. The second member 18 is overlapped on the projected portion of the first member 17 fixed to the base end side visible surface 30 of the guide rail base frame 3, and the first projected edge 180 of the second member 18 is flush with the outer projected edge 31 of the guide rail base frame 3, and the tip of the second projected edge 182 of the second member 18 coincides with the tip of the second projected edge 173 and is spaced apart from the lower wall surface W'. Note that the first projected edge 180 of the second member 18 may not be flush with the outer projected edge 31 of the guide rail base frame 3, but may extend along the outer projected edge 31.

[0096] Figure 22 shows a state in which the second member 18 is stacked over its entire height on the projection portion of the first member 17 fixed to the base end side visible surface 30 of the guide rail base frame 3 (corresponding to the first mode in the right diagram of Figure 26), and a gap is formed between the upper edges 174, 183 of the first member 17 and the second member 18 and the upper end of the gap (the middle underside surface W'' of the body).

[0097] FIG. 23 shows a state in which the second member 18 has been slid upward relative to the projected portion of the first member 17 from the state shown in FIG. 22 (corresponding to the second mode shown in the left diagram of FIG. 26 ), with the upper edge 183 of the second member 18 approaching or abutting the upper end of the gap (the middle lower surface W″ of the main body). With the height position of the second member 18 determined, the first projected edge 180 of the second member 18 is fixed to the first projected edge 171 of the first member 17 with a screw 185. After adjusting the height dimension of the gap closing means according to the first embodiment, the gap closing means (ends of the second projected edges 173, 182) and the lower wall surface W′ are further sealed in the height direction with an airtight member 19. Note that a sealing material may be provided between the upper end of the gap closing means and the middle lower surface W″ of the main body, and between the lower end of the gap closing means and the floor surface FL.

[0098] [F-2] Second embodiment A second embodiment of the gap closing means will be described with reference to Figures 27 to 32. The gap closing means according to the second embodiment comprises a first member 27 fixed to a lower portion of the base end visible surface 30 of the guide rail base frame 3, and a second member 28 whose position in the projection direction is adjustable relative to the first member 27. The gap closing means according to the second embodiment has a variable projection dimension, and therefore can be effectively adapted particularly to cases where the projection dimension of the gap varies depending on the site.

[0099] As shown in the left diagram of Figure 31, the first member 27 is an elongated member extending in the height direction and has a U-shaped cross section made up of a visible edge 270 and left and right visible edges 271, 272. On the visible edge 270 of the first member 27, a first hole 2700, a second hole 2701, and a third hole 2702 are formed on the upper side with gaps between them in the height direction, and a third hole 2702, a second hole 2701, and a first hole 2700 are formed on the lower side with gaps between them in the height direction. The visible edges 271, 272 of the first member 27 form first visible portions of the gap closing means.

[0100] As shown in the right diagram of Figure 31, second member 28 is a long member extending in the height direction and has an H-shaped cross section made up of visible edge 280 and left and right visible edges 281, 282. Screw holes 2800 are formed in visible edge 280 of second member 28 at intervals above and below. Visible edges 281, 282 of second member 28 form second visible portions of the gap closing means.

[0101] First member 27 and second member 28 have the same height, which is approximately the same as the height of the gap. The dimension between the outer surfaces of projected edges 281, 282 of second member 28 is approximately the same as (slightly smaller than) the dimension between the inner surfaces of projected edges 271, 272 of first member 27, and first member 27 and second member 28 constitute gap closing means according to the second embodiment in a state in which the outer surfaces of projected edges 281, 282 of second member 28 overlap the inner surfaces of projected edges 271, 272 of first member 27 so as to be slidable in the projected direction, and second member 28 slides in the projected direction relative to first member 27, thereby varying the projected dimension of the gap closing means.

[0102] In the gap closing means according to the second embodiment, which is formed by combining a first member 27 and a second member 28, the left diagram in Fig. 32 shows a first state in which the projected dimension is smallest (the distance between the visible edge 270 of the first member 27 and the visible edge 280 of the second member 28 is shortest), and in this state, the visible edge 280 of the second member 28 moves in a direction away from the visible edge 270 of the first member 27, thereby increasing the projected dimension of the gap closing means and achieving the second state shown in the right diagram in Fig. 32. In Figs. 27 and 28, the gap closing means is in the first state, and in Figs. 29 and 30, the gap closing means is in the second state.

[0103] The gap closing means according to the second embodiment includes three types of screws extending in the projection direction. The first screw 21 is a screw that fixes the first member 27 to the side frame (the base-end facing surface 30 of the guide rail base frame 3), the second screw 22 is a screw that adjusts the position of the second member 28 relative to the first member 27 in the projection direction, and the third screw 23 is a screw that fixes the second member 28, whose position has been adjusted, to the first member 27 (the base-end facing surface 30).

[0104] The base end visible surface 30 of the guide rail base frame 3 (and, in the illustrated embodiment, the visible edge 150 of the reinforcing member 15) has a first hole 2700, a second hole 2701, and a third hole 2702 formed on the upper side of the visible edge 270 of the first member 27, and a first hole, a second hole, and a third hole formed corresponding to the third hole 2702, the second hole 2701, and the first hole 2700 formed on the lower side, respectively.

[0105] The first member 27 is fixed by a first screw 21 with its visible edge 270 abutting against the base-end visible surface 30 of the guide rail base frame 3. The first screw 21 is threaded into a first hole 2700 in the visible edge 270. The first hole 2700 is a screw hole, and the first hole in the base-end visible surface 30 (and the visible edge 150 of the reinforcing member 15) corresponding to the first hole 2700 is a through hole. The first screw 21 integrates the base-end visible surface 30 of the guide rail base frame 3, the visible edge 150 abutting against the inner surface of the base-end visible surface 30, and the visible edge 270 abutting against the outer surface of the base-end visible surface 30 (see FIG. 28). One visible edge 271 of the first member 27 is flush with the outer visible edge 31 of the guide rail base frame 3. Note that Figure 28 shows the guide rail 4 attached to the guide rail base frame 3, but in the actual installation procedure, the guide rail 4 is attached after the gap sealing means is installed.

[0106] The second hole 2701 formed in the visible edge 270 of the first member 27 is a screw hole, and the second hole in the base-end visible surface 30 (and the visible edge 150 of the reinforcing member 15) corresponding to the second hole 2701 is an insertion hole. The second screw 22 is inserted through the second hole in the base-end visible surface 30 and threadedly engages with the second hole 2701, and the tip of the shank of the second screw 22 abuts against the visible edge of the second member 28. When the gap closing means is in the first mode state shown in FIG. 32 , tightening the second screw 22 causes the shank of the second screw 22 to press the visible edge of the second member 28, causing the second member 28 to slide in the visible direction relative to the first member 27 fixed to the base-end visible surface 30, thereby increasing the visible dimension (upper view of FIG. 30 ).

[0107] The third hole 2702 formed in the visible edge 270 of the first member 27 is an insertion hole, and the third hole in the base-side visible surface 30 (and the visible edge 150 of the reinforcing member 15) corresponding to the third hole 2702 is also an insertion hole. The third hole 2702 of the first member 27 and the screw hole 2800 of the second member 28 are aligned, and the third screw 23 is inserted through the third hole in the base-side visible surface 30 (and the visible edge 150 of the reinforcing member 15) and the third hole 2702 formed in the visible edge 270, and the distal portion of the shank is screwed into the screw hole 2800 of the second member 28, whereby the position of the second member 28 relative to the first member 27 is fixed (in the illustrated embodiment, the head of the third screw 23 abuts against the visible edge 150), and the projected dimension of the gap closing means is determined (lower diagram in FIG. 30 ). The third screw 23 is an optional element, and even if the third screw 23 is not present, the position of the gap closing means is maintained.

[0108] An airtight member 29 is fitted over the entire height into the U-shaped cross-sectional space surrounded by the half of the projected edges 281, 282 of the second member 28 that is farther from the first member 27 and the projected edge 280. When external pressure is to be applied, the airtight member 29 partially protrudes beyond the ends of the projected edges 281, 282 of the second member 28 (FIGS. 28 and 32). By pressing the second member 28 with the second screws 22, the airtight member 29 is brought into close contact with the lower wall surface W' (FIG. 30). Note that a sealing material may be provided between the upper end of the gap closing means and the middle lower surface W'' of the main body, and between the lower end of the gap closing means and the floor surface FL. In the illustrated embodiment, the projected dimensions of projected sides 271, 272 of first member 27 and the projected dimensions of projected sides 281, 282 of second member 28 are the same, but the projected dimension of either first member 27 or second member 28 may be larger and the projected dimension of the other smaller. In the illustrated embodiment, projected side 80 of second member 8 is located in the center of the projected widths of projected sides 281, 282, but it may be offset to either the indoor or outdoor side.

[0109] [F-3] Third embodiment A third embodiment of the gap closing means will be described with reference to Figures 33 to 39. The height and projected dimensions of the gap closing means according to the third embodiment are variable, and can effectively accommodate all cases where the height dimension of the gap differs depending on the site, where the height dimensions of the left and right gaps differ due to the inclination of the floor surface FL in the opening width direction, and where the projected dimensions of the gap differ depending on the site.

[0110] The gap closing means according to the third embodiment comprises a first unit 37 and a second unit 38 whose position in the projection direction is adjustable relative to the first unit 37. The first unit 37 comprises a first element 43 and a second element 44 whose position in the height direction is adjustable relative to the first element 43. The second unit 38 comprises a third element 45 and a fourth element 46 whose position in the height direction is adjustable relative to the third element 45. The fourth element 46 of the second unit 38 moves upward in response to the upward movement of the second element 44 of the first unit 37. In this embodiment, the first element 43, second element 44, third element 45, and fourth element 46 all have the same height, which is shorter than the height of the gap.

[0111] 38(B), the first element 43 is an elongated member extending in the height direction, and has a U-shaped cross section formed by a visible side 430 and left and right visible sides 431, 432, and also has an upper edge 433 and a lower edge 434. On the visible side 430 of the first element 43, a first hole 4300, a second hole 4301, and a third hole 4302 are formed on the upper side at intervals in the height direction, and a third hole 4302, a second hole 4301, and a first hole 4300 are formed on the lower side at intervals in the height direction.

[0112] 38(A), the second element 44 is an elongated member extending in the height direction, and has a U-shaped cross section formed by an oblique side 440 and left and right oblique sides 441, 442, and also has an upper edge 443 and a lower edge 444. The oblique side 440 of the second element 44 has vertically elongated holes 4400 formed at the top and bottom.

[0113] The first element 43 and the second element 44 have the same height. The dimension between the outer surfaces of the prospective sides 431, 432 of the first element 43 is approximately the same as (slightly smaller than) the dimension between the outer surfaces of the prospective sides 441, 442 of the second element 44. The first unit 37 having a U-shaped cross section is formed by overlapping the inner surface of the U-shaped cross section of the first element 43 with the inner surface of the U-shaped cross section of the second element 44. The first hole 4300, second hole 4301, and third hole 4302 formed in the prospective side 430 of the first element 43 are aligned with the vertically elongated hole 4400 formed in the prospective side 440 of the second element 44. The second element 44 is slidable in the height direction relative to the first element 43 with the outer surfaces of the prospective sides 441, 442 of the second element 44 overlapping the inner surfaces of the prospective sides 431, 432 of the first element 43. FIG. 37(A) shows a state in which the second element 44 has slid upward relative to the first element 43.

[0114] 38(D), the third element 45 is an elongated member extending in the height direction, and has an H-shaped cross section formed by a visible edge 450 and left and right visible edges 451, 452, and also has an upper edge 453 and a lower edge 454. Two screw holes 4500 are formed in the visible edge 450 of the third element 45, spaced apart in the height direction.

[0115] 38(C), the fourth element 46 is a long member extending in the height direction and has a U-shaped cross section made up of a visible side 460 and left and right visible sides 461, 462, with horizontally bent pieces 4610, 4620 formed at the upper ends of the visible sides 461, 462. The upper and lower ends of the fourth element 46 are upper edge 463 and lower edge 464, respectively.

[0116] The third element 45 and the fourth element 46 have the same height. The dimension between the outer surfaces of the projected sides 451, 452 of the third element 45 is approximately the same as (slightly smaller than) the dimension between the outer surfaces of the projected sides 461, 462 of the fourth element 46, and the second unit 38 is formed by overlapping the inner surface of the U-shaped cross section of the fourth element 46 with the outer surface of the H-shaped cross section of the third element 45. The fourth element 46 is slidable in the height direction relative to the third element 45 with the inner surfaces of the projected sides 461, 462 of the fourth element 46 overlapping the outer surfaces of the projected sides 451, 452 of the third element 45. Figure 37(B) shows a state in which the fourth element 46 has slid upward relative to the third element 45.

[0117] When the first unit 37 and the second unit 38 are combined and the upper edges 433, 443, 453, 463 and the lower edges 434, 444, 454, 464 of the first element 43, the second element 44, the third element 45, and the fourth element 46 are aligned, the bent pieces 4610, 4620 of the fourth element 46 of the second unit 38 are placed on the upper edge 433 of the first element 43 and the upper edge 443 of the second element 44 of the first unit 37 (FIG. 39, left diagram). In this state, when the second element 44 of the first unit 37 is lifted, the bent pieces 4610, 4620 of the fourth element 46 of the second unit 38 are pushed up, and the second element 44 and the fourth element 46 move upward together (FIG. 37(C)).

[0118] The gap closing means according to the third embodiment includes three types of screws extending in the projection direction. The first screws 21 are screws that secure the first unit 37 (first element 43) to the side frame (the base-end facing surface 30 of the guide rail base frame 3), the second screws 22 are screws that adjust the projection direction position of the second unit 38 (third element 45) relative to the first unit 37, and the third screws 23 are screws that secure the second unit 38 (third element 45) whose position has been adjusted to the first unit 37 (base-end facing surface 30).

[0119] The base end visible surface 30 of the guide rail base frame 3 (and, in the illustrated embodiment, the visible edge 150 of the reinforcing member 15) has a first hole 4300, a second hole 4301, and a third hole 4302 formed on the upper side of the visible edge 430 of the first element 43 of the first unit 37, and a first hole, a second hole 4301, and a third hole formed on the lower side, respectively.

[0120] The first unit 37 is fixed to the base-end visible surface 30 of the guide rail base frame 3 by fixing the visible edge 430 of the first element 43 to the base-end visible surface 30 of the guide rail base frame 3 with the first screw 21, with the visible edge 440 of the second element 44 abutting against the base-end visible surface 30 of the guide rail base frame 3. One visible surface of the first unit 37 (one visible edge 441 of the second element 44) is flush with the outer visible edge 31 of the guide rail base frame 3. The first hole 4300 is a screw hole, and the first hole in the base-end visible surface 30 (and the visible edge 150 of the reinforcing member 15) corresponding to the first hole 4300 is an insertion hole, and the first hole 4300 coincides with the elongated hole 4400 in the visible edge 440 of the second element 44 of the first unit 37. The first screw 21 is inserted through the first hole in the base end side facing surface 30 (and the facing edge 150 of the reinforcing member 15) and the vertically elongated hole 4400 formed in the facing edge 440 of the second element 44, and is screwed into the first hole 4300 in the facing edge 430.

[0121] By tightening the first screw 21, the base end side visible surface 30 of the guide rail base frame 3, the visible edge 150 abutting the inner surface of the base end side visible surface 30, and the visible edge of the first unit 37 abutting the outer surface of the base end side visible surface 30 (visible edge 440 + visible edge 430) are integrated (see Figure 34). Note that while Figure 34 shows the guide rail 4 attached to the guide rail base frame 3, in the actual installation procedure, the guide rail 4 is attached after the gap closing means is attached.

[0122] It should be noted that the first screw 21 is tightened after the height position of the second element 44 relative to the first element 43 has been determined. With the first element 43 temporarily held by the first screw 21, the second element 44 is slid upward relative to the first element 43, and the second element 44 and the fourth element 46 are moved upward together to determine the height dimension of the gap closing means. By tightening the first screw 21, the visible edge 440 of the second element 44 is clamped between the base-end visible surface 30 of the guide rail base frame 3 and the visible edge 430 of the first element 43, fixing the height position of the second element 44 and, at the same time, fixing the height position of the fourth element 46.

[0123] The second hole 4301 formed in the visible edge 430 of the first element 43 of the first unit 37 is a screw hole, and the second hole in the base-end visible surface 30 (and the visible edge 150 of the reinforcing member 15) corresponding to the second hole 4301 is an insertion hole, and the second hole 4301 coincides with a vertically elongated hole 4400 in the visible edge 440 of the second element 44 of the first unit 37. The second screw 22 is inserted through the second hole in the base-end visible surface 30, and the shank of the second screw 22 is threadedly engaged with the vertically elongated hole 4400 and the second hole 4301, with the tip abutting the visible edge 450 of the third element 45 of the second unit 38.

[0124] In the gap closing means according to the third embodiment, when the projected dimension is small (FIGS. 33, 34, and 39, left), tightening the second screw 22 causes the shank of the second screw 22 to press against the visible edge 450 of the third element 45 of the second unit 38, causing the second unit 38 (third element 45) to slide in the projected direction relative to the first unit 37 fixed to the base-end-side visible surface 30, increasing the projected dimension and causing the visible edge 460 of the fourth element 46 of the second unit 38 to abut against the lower wall surface W' (FIG. 36, top). An airtight member (sealing material) may be provided on the visible edge 460 of the fourth element 36.

[0125] The third hole 4302 formed in the visible edge 430 of the first element 43 of the first unit 37 is a through hole, and the third hole in the base end visible surface 30 (and the visible edge 150 of the reinforcing member 15) corresponding to the third hole 4302 is a through hole, and the third hole 4302 coincides with the vertically elongated hole 4400 in the visible edge 440 of the second element 44 of the first unit 37. The third hole 4302 formed in the visible edge 430 of the first element 43 of the first unit 37 and the screw hole 4500 formed in the visible edge 45 of the third element 45 of the second unit 38 are aligned, and the third screw 23 is inserted through the third hole in the base-end visible surface 30 (and the visible edge 150 of the reinforcing member 15), the vertically elongated hole 4400 formed in the visible edge 440 of the second element 44 of the first unit 37, and the third hole 4302 formed in the visible edge 430 of the first element 43, and the shank is screwed into the screw hole 4500 in the visible edge 450 of the third element 45 of the second unit 38, thereby fixing the position of the second unit 38 relative to the first unit 37 and sealing the gap by the gap sealing means (lower diagram in Figure 36). It is also possible to provide sealing material between the visible surface (visible edge 460) of the gap sealing means facing the main body and the lower wall surface W', between the upper end of the gap sealing means and the middle lower surface W'' of the main body, and between the lower end of the gap sealing means and the floor surface FL. The visible edges 431, 432 of the first element 43 and the visible edges 441, 442 of the second element 44 are the first visible parts of the gap sealing means, and the visible edges 451, 452 of the third element 45 and the visible edges 461, 462 of the fourth element 46 are the second visible parts of the gap sealing means. In the illustrated embodiment, the prospective dimensions of the prospective portion of first unit 37 (prospective sides 431, 432 of first element 43) and the prospective dimension of the prospective portion of second unit 38 (prospective sides 451, 452 of third element 45) are the same, but the prospective dimension of either the prospective portion of first unit 37 (prospective sides 431, 432 of first element 43) or the prospective portion of second unit 38 (prospective sides 451, 452 of third element 45) may be larger and the prospective dimension of the other smaller. In the illustrated embodiment, the prospective side 450 of third element 45 is located in the center of the prospective widths of the prospective sides 451, 452, but it may be offset toward either the indoor or outdoor side. [Explanation of symbols]

[0126] 1 bracket 2 Winding shaft 3 Guide rail base frame (side frame) 30 Base end surface 4 Guide rail (side frame) 5. Shutter Curtain 5A upper part 5B Lower part 5C Outermost part 50 slats 500 Main unit 501 Upper interlock part 502 Lower interlock part 6 Shutter case (shutter storage section) 60 Top plate 63 First Case Angle 630 Rear part 631 Top piece 633 Lower piece 7 Seat board 70 Vertical section 71 Flat section 72 Flat section 724 Bottom part 73 Reinforcement 74 Flat section 743 Bottom part 745 Cushioning material 746 Outdoor thermal expansion fire-resistant members 747 Indoor thermal expansion fire-resistant materials 75 Reinforcement 8 Window Device 81 Bottom frame 9. Handling 90 Upper horizontal piece 91 Lower horizontal piece 92 Vertical surface section 93 Handle piece 11 Locking device 112 Operating unit (lever lock) 113 Lever (lever lock) 114 String-like member 115 Grip 12 End hook 13 Intermediate hook 130 area 131 Hooked piece 132 Aperture 133 Projecting piece 14 Support member 140 area 141 Inclined piece 142 Lower piece 143 Bent piece 20 waterproof layer 17 First member (gap closing means) 18 Second member (gap closing means) 19 Airtight materials (sealing materials) 27 First member (gap closing means) 28 Second member (gap closing means) 29 Airtight materials (sealing materials) 37 First unit (gap closing means) 38 Second unit (gap closing means) 43 First Element 44 Second Element 45 Third Element 46 The Fourth Element FL floor surface W External wall (framework) W´ Lower wall W´´ Middle lower surface of the frame

Claims

1. A window shutter is formed by a shutter storage section provided in a cantilevered shape on the main body, left and right side frames, and a bottom surface, and a shutter curtain opens and closes a space located on the outdoor side of a window opening. the lower portion of the side frame and the lower surface are located below the window opening, the shutter curtain includes an upper portion located above a lower end of the window opening when the window shutter is in a fully closed position, and a lower portion located below the lower end of the window opening, A handle is provided on the indoor side surface of the slat forming the upper portion, The shutter curtain includes an outermost portion located between a portion adjacent to the case top panel and a seat plate located in the lintel of the shutter storage section when the shutter curtain is in a rolled-up state when the opening is fully open, The handle is provided on the indoor side surface of the slat that forms the upper portion and the outermost portion. Window shutters.

2. A window shutter is formed by a shutter storage section provided in a cantilevered shape on the main body, left and right side frames, and a bottom surface, and a shutter curtain opens and closes a space located on the outdoor side of a window opening. the lower portion of the side frame and the lower surface are located below the window opening, the shutter curtain includes an upper portion located above a lower end of the window opening when the window shutter is in a fully closed position, and a lower portion located below the lower end of the window opening, A handle is provided on the indoor side surface of the slat forming the upper portion at a position biased toward the width direction end with respect to the width direction center of the slat, The handle is located approximately above a lever lock provided on the seat plate, and the base end of a string-like member is connected to the lever lock. The grip portion provided at the tip of the string-like member can be detachably connected to the indoor side surface of the slat that forms the upper portion. Window shutters.

3. A window shutter is formed by a shutter storage section provided in a cantilevered shape on the main body, left and right side frames, and a bottom surface, and a shutter curtain opens and closes a space located on the outdoor side of a window opening. the lower portion of the side frame and the lower surface are located below the window opening, the shutter curtain includes an upper portion located above a lower end of the window opening when the window shutter is in a fully closed position, and a lower portion located below the lower end of the window opening, A handle is provided on the indoor side surface of the slat forming the upper portion, The slat comprises a curved plate-shaped main body portion, an upper interlock portion integrally formed at an upper end of the main body portion, and a lower interlock portion integrally formed at a lower end of the main body portion, The handle comprises a main body having a U-shaped cross section formed from an upper horizontal piece, a lower horizontal piece, and a vertical surface, and a handle piece extending from the vertical surface to the opposite side of the upper horizontal piece and the lower horizontal piece, The handle is fixed to the main body with a screw, with the upper horizontal piece engaging with or abutting against the base end of the upper interlock part, and the lower horizontal piece engaging with or abutting against the lower part of the main body or the base end of the lower interlock part. Window shutters.

4. A window shutter formed by a shutter storage section provided in a protruding shape on the main body, left and right side frames, and a bottom surface, in which a shutter curtain opens and closes a space located on the outdoor side of a window opening, the lower portion of the side frame and the lower surface are located below the window opening, the shutter curtain includes an upper portion located above a lower end of the window opening when the window shutter is in a fully closed position, and a lower portion located below the lower end of the window opening, A handle is provided on the indoor side surface of the slat forming the upper portion, The base end of a string-like member is connected to the lever lock provided on the seat plate, and the grip portion provided at the tip of the string-like member can be detachably connected to the indoor side surface of the slat that forms the upper part. Window shutters.

Images