window shutters

Abstract

To provide a window shutter of a type that includes no draining plate at the lower end of a side frame capable of improving the wind pressure resistance.SOLUTION: Provided is the window shutter with a shutter curtain 5 for opening / closing a space formed with a shutter storage housing provided to a building frame protruding outdoor, left and right side frames, and a floor FL. The side frame includes a guide rail base frame 3 and a guide rail 4, and a reinforcing member 7 is provided to connect the lower end portions of the sides 30 of the guide rail base frame 3. The reinforcing member 7 is placed on the floor FL, and the longitudinal end portions are fixed to the guide rail base frame 3 via a connecting fitting 8.SELECTED DRAWING: Figure 1

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 typical window shutter, the upper ends of the left and right guide rail base frames are fixed to the underside of the shutter case (inner lintel), and the lower ends are fixed to a drip board (bottom frame) extending in the width direction of the opening (Patent Document 1). This allows the shutter curtain to open and close a four-sided frame-shaped opening. Even when wind pressure acts on the shutter curtain while the opening is closed, the guide rail base frames are prevented from deforming in the opening direction. If the guide rail base frames were to deform in the opening direction, the widthwise ends of the shutter curtain would easily come out of the guide grooves of the guide rail, impairing wind pressure resistance. Furthermore, in addition to the guide rail base frames deforming in the opening direction, if the exterior-facing surface of the guide rail opens, the widthwise ends of the shutter curtain would be even more likely to come out of the guide grooves.

[0004] However, when window shutters are installed on the outdoor side of a French window, for example, the bottom end of the shutter curtain when fully closed rests directly on the floor (ground), and some do not have a drip board connecting the bottom ends of the left and right guide rail base frames. Because the guide rail base frames are provided in a protruding manner from the frame, the absence of a drip board connecting the bottom ends of the guide rail base frames could affect the wind pressure resistance of the window shutter when fully closed. [Patent Document 1] Patent Publication No. 2013-177743 DISCLOSURE OF THE INVENTION [Problem to be solved by the invention]

[0005] The present invention aims to improve the wind pressure resistance of a window shutter that does not have a water drip board at the lower end of the side frame. [Means for solving the problem]

[0006] The technical means adopted by the present invention are: In a window shutter, a shutter curtain opens and closes the space formed by a shutter storage section provided in a cantilevered shape on the main body, the left and right side frames, and the floor. A reinforcing member is provided to connect the lower end portions of the side frames, The reinforcing member has longitudinal ends fixed to the side frames when placed on the floor surface. Window shutters.

[0007] In one embodiment, the reinforcing member is located closer to the interior than the lower end of the shutter curtain when fully closed. In one embodiment, a wall surface is formed at the indoor end of the floor surface, The reinforcing member is located at a distance from the wall surface toward the exterior.

[0008] In one embodiment, the side frame comprises a guide rail base frame provided in a corbel shape on the main body, and a guide rail attached to the tip of the guide rail base frame, The reinforcing member connects the lower end portions of the guide rail base frames.

[0009] In one embodiment, the reinforcing member has a variable inclination in the indoor / outdoor direction and / or the inclination in the opening width direction. In one embodiment, the longitudinal ends of the reinforcing members are fixed to the side frames by connecting means; The connecting means includes height adjustment portions at the longitudinal ends of the reinforcing member and indoor / outdoor tilt adjustment portions of the reinforcing member.

[0010] In one embodiment, the connecting means comprises a connecting metal fitting fixed to a longitudinal end of the reinforcing member, The side frame and the connecting fitting are formed with screw insertion holes for fixing the projected surface of the side frame and the projected piece of the connecting fitting, and one of the insertion holes is an elongated hole extending in the height direction, and the screw extends in the projected direction, The height of the longitudinal end of the reinforcing member is adjustable within the elongated hole; The reinforcing member can be tilted toward the indoor side using the screw as a tilting axis. In one embodiment, the elongated hole consists of a first elongated hole and a second elongated hole extending parallel to the height direction, the second width of the second elongated hole is larger than the first width of the first elongated hole, and the screw inserted through the first elongated hole serves as the tilting axis. In one embodiment, the first and second elongated holes are formed at the lower end portions of the side frames. In one embodiment, the first slot is located on the indoor side (the side closer to the building frame), and the second slot is located on the outdoor side (the side farther from the building frame). [Effects of the Invention]

[0011] The window shutter of the present invention is provided with a reinforcing member that connects the lower ends of the left and right side frames, thereby improving wind pressure resistance even for window shutters that do not have water drip plates at the lower ends of the side frames. [Brief explanation of the drawings]

[0012] [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] (A) is a partially enlarged view of FIG. 1, and (B) is a partially enlarged view of FIG. 2. [Figure 4] FIG. 2 is a diagram showing a guide rail base frame according to the present embodiment. [Figure 5] 5A and 5B are diagrams illustrating a reinforcing member according to the present embodiment. [Figure 6] 1A and 1B are diagrams showing a connecting fitting according to the present embodiment. [Figure 7] 10 is a diagram illustrating the connection between the lower end portion of the guide rail base frame and the connecting fitting. FIG. [Figure 8] This is a front view showing a reinforcing member whose longitudinal end is connected to the lower end of the left and right guide rail base frames, and the lower surface of the reinforcing member is placed on a floor surface extending horizontally in the opening width direction. [Figure 9] This is a front view showing a reinforcing member whose longitudinal end is connected to the lower end of the left and right guide rail base frames, and the lower surface of the reinforcing member is placed on a floor surface that slopes in the opening width direction. [Figure 10] FIG. 9 is a partially enlarged view of FIG. 8. [Figure 11] FIG. 10 is a partially enlarged view of FIG. [Figure 12] The left figure is a vertical end view showing the mounting state of one end in the length direction of a reinforcing member placed on a floor surface inclined in the opening width direction, and the right figure is a vertical end view showing the mounting state of the other end in the length direction of a reinforcing member placed on a floor surface inclined in the opening width direction, and corresponds to the left and right figures in Figure 9. [Figure 13] The left figure is a vertical end view showing the installation state of one end in the length direction of a reinforcing member placed on a floor surface that slopes in the opening width direction and the indoor / outdoor direction, and the right figure is a vertical end view showing the installation state of the other end in the length direction of a reinforcing member placed on a floor surface that slopes in the opening width direction. DETAILED DESCRIPTION OF THE INVENTION

[0013] [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 vertical cross-sectional view of the window shutter. The window shutter according to this embodiment is a window shutter device installed on the outdoor side of a window sash S. The window sash S according to this embodiment is a so-called French window, which 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.

[0014] The window shutter is composed of left and right brackets 1 located above the window opening and attached to the main body (exterior wall W) in a corrugated shape, a winding shaft 2 supported between the left and right brackets 1, a guide rail base frame 3 on the left and right sides of the opening width direction attached to the exterior wall W in a corrugated shape, left and right guide rails 4 supported by the guide rail base frames 3 on the left and right sides of the opening width direction, a shutter curtain 5 connected at its upper end to the winding shaft 2, which is wound / unwound onto 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, opening and closing the outdoor space of the window opening, a shutter case 6 located above the window opening and attached to the exterior wall W in a corrugated shape, which stores the shutter curtain 5 wound up on the left and right brackets 1 and the winding shaft 2, and an opening / closing mechanism M attached to the drive side bracket 1 and driving the winding shaft 2 to rotate.

[0015] The window shutter according to this embodiment does not have a drip board (bottom frame). In other words, the opening that is opened and closed by the window shutter is a space surrounded by the underside (inner lintel 60) 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 the window shutter according to this embodiment, a reinforcing member 7 is provided below the guide rail base frame 3. The reinforcing member 7 is fixed to the lower part of the guide rail base frame 3 via a connecting metal fitting 8. The configurations of the reinforcing member 7 and the connecting metal fitting 8 will be described in detail below.

[0016] The shutter curtain 5 is formed by connecting long slats 50 extending in the width direction of the opening at the top and bottom, and 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 51 at the bottom end rests 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.

[0017] As shown in Figure 1, in this embodiment, the height position of the outdoor floor surface FL is located below the bottom edge of the window opening (window sash S), 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 closer to the interior than the exterior wall W to which the guide rail base frame 3 and shutter case 6 are attached. A waterproof layer 11 is formed from the floor surface FL to the lower wall surface W'. A sealing material may be provided in the space between the exterior wall W and the lower wall surface W'.

[0018] [B] 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.

[0019] [B-1] Guide rail base frame The guide rail base frame 3 is a long member that extends perpendicular to the height direction of the opening, and as shown in Figure 4, has a side edge 30 that extends in the forward direction so as to be away from the exterior wall W, and the side edge 30 has an outer surface on the outside (the side farther from the opening) and an inner surface on the inside (the side closer to the opening). A fixed edge 31 that extends outward from the outer surface in the forward direction is integrally formed at the base end of the side edge 30.

[0020] An attachment portion for the guide rail 4 is integrally formed in the tip end portion of the guide rail base frame 3, i.e., the tip end portion 300 of the side edge 30, so that the guide rail 4 is attached to and supported by the attachment portion. The attachment portion comprises the tip end portion 300 of the side edge 30, an engaged portion 32 that is approximately U-shaped in cross section and is integrally formed at the tip of the tip end portion 300, a tip end visible edge 33 that protrudes inward (toward the opening) from the base end of the tip end portion 300 in the visible direction, and a connected edge 34 that extends in the visible direction from the tip of the tip end visible edge 33 to the outdoor side (away from the exterior wall W) facing the tip end portion 300 of the side edge 30.

[0021] A base end side visible edge 35 that protrudes inward from the inner surface in the visible direction is formed on the base end side of the side edge 30 of the guide rail base frame 3. An intermediate visible edge 36 that protrudes inward from the inner surface in the visible direction is formed in a location closer to the base end than the center of the projected dimension of the side edge 30. A bent piece 360 ​​is integrally formed at the tip of the intermediate visible edge 36.

[0022] A fixed edge 31 located at the base end and extending outward in the facing direction is protruded from the outer surface of the side edge 30 of the guide rail base frame 3, and three edges extending parallel to the facing direction, a tip-side facing edge 33, a base-side facing edge 35, and a middle facing edge 36, are protruded from the inner surface of the side edge 30.

[0023] [B-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 2, 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.

[0024] An extending edge 43 is integrally formed on the base end side of side edge 41, extending beyond bottom edge 42 in a direction away from the opening, and an inclined edge 44 is integrally formed, extending from bottom edge 42 outward (in the direction away from the opening) toward the main body at an angle in plan view, and the tip of inclined edge 44 and the tip of extending edge 43 (the side farther from the guide groove) are integrally connected to form a corner, and a locking piece 45 that is generally L-shaped in cross section is integrally formed on the corner. A connecting edge 46 is integrally formed on the base end side (the side closer to the guide groove) of extending edge 43, extending in the projection direction toward the main body.

[0025] [B-3] Side frame The guide rail base frame 3 is provided in a protruding manner relative to the exterior wall W by abutting the fixed edge 31 of the side edge 30 against the exterior wall W and fixing it to the frame with multiple screws 310 along the height direction. With the locking piece 45 of the guide rail 4 locked to the locking portion 32 of the guide rail base frame 3, the connecting edge 46 of the guide rail 4 and the connected edge 34 of the guide rail base frame 3 are abutted against each other and connected with multiple screws 47 along the height direction, thereby connecting the guide rail 4 to the guide rail base frame 3. Guide rails 4 connected to and supported by the guide rail base frame 3 are well known to those skilled in the art, and the connection between the guide rail base frame 3 and the guide rail 4 is not limited to the illustrated embodiment. The upper portions of the left and right side frames (upper portions of the side edges 30 of the guide rail base frame 3) are fixed to the inner lintel 60 on the underside of the shutter case 6 with screws (not shown). No drip boards (lower frames) are provided in the lower portions of the left and right side frames (lower portions of the side edges 30 of the guide rail base frame 3).

[0026] As shown in FIG. 2 , the guide rail base frame 3 is attached by fixing the fixed edge 31 to the outer wall W with screws 310 while the fixed edge 31 is in contact with the outer wall W. The base end visible edge 35 extends in the visible direction at a slight distance from the base end of the side edge 30, so that when the guide rail base frame 3 is fixed to the outer wall W, the base end visible edge 35 and the outer wall W are spaced apart. A watertight member 12 extending in the height direction is provided on the back surface of the base end visible edge 35, sealing the gap between the base end visible edge 35 and the outer wall W along the height direction. A plurality of fitted members 37 are provided along the height direction on the base end side of the outer surface of the side edge 30 of the guide rail base frame 3, and a decorative cover 38 extending in the height direction is attached to the base end side of the side edge 30 of the guide rail base frame 3.

[0027] [C] Reinforcement member The reinforcing member 7 according to this embodiment is a long member extending in the opening width direction (view direction), and when placed on the floor surface FL, its longitudinal end is fixed to the lower end of the side frame (side edge 30 of the guide rail base frame 3). As shown in Fig. 1, the reinforcing member 7 is placed on the floor surface FL, located on the indoor side of the seat plate 51 at the lower end of the shutter curtain 5 that is attached to the floor surface FL in the fully closed position, and on the outdoor side of the lower wall surface W'.

[0028] As shown in Figure 5, the reinforcing member 7 according to this embodiment is a long, rectangular pipe made of aluminum material, and has a rectangular cross section, consisting of an upper surface 70, a lower surface 71, and a pair of facing surfaces 72, 73. The reinforcing member 7 is connected to the lower end of the side edge 30 of the guide rail base frame 3 via a connecting metal fitting 8. The height of the reinforcing member 7 according to this embodiment is smaller than the width of the reinforcing member 7, thereby minimizing the protrusion from the floor surface FL. The shape of the reinforcing member 7 is not limited; for example, the upper surface 70 may be curved.

[0029] 6, the connecting fitting 8 has a U-shaped cross section, made up of a vertically shaped front piece 80 and a pair of vertically opposing front pieces 81, 82. The height of the front piece 80 is greater than the height of the front pieces 81, 82, and the pair of front pieces 81, 82 extend from both widthwise ends of a lower half 801 of the front piece 80. An upper half 800 of the front piece 80 extends upward beyond the upper ends of the pair of front pieces 81, 82, and two insertion holes 83 are formed in the upper half 800 through which screws 9 (first screw 9A, second screw 9B) for fixing the connecting fitting 8 to the lower end of the front edge 30 of the guide rail base frame 3 are inserted.

[0030] As shown in Fig. 3, the height of the facing pieces 81, 82 of the connecting fitting 8 is approximately the same as the height of the reinforcing member 7, and the distance between the facing pieces 81, 82 is approximately the same as the projected width of the reinforcing member 7. With the longitudinal end of the reinforcing member 7 received between the pair of facing pieces 81, 82, the longitudinal ends of the facing surfaces 72 and 73 of the reinforcing member 7 abut against the inner surfaces of the pair of facing pieces 81, 82. The longitudinal end of the reinforcing member 7 is connected to the connecting fitting 8 by fastening with a screw (bolt) 10 and a nut 10' that penetrate the reinforcing member 7 and the facing pieces 81, 82. By loosening the screw 10, the attitude of the reinforcing member 7 relative to the facing pieces 81, 82 of the connecting fitting 8 (the tilt in the indoor / outdoor direction and the tilt in the opening width direction) can be changed using the shank of the screw 10 as a fulcrum.

[0031] An elastic, plate-like gap closing member 84 is provided on the inner surface of the lower half 801 of the leading piece 80 of the connecting fitting 8; the elastic member is typically a rubber member (it may be sponge, etc.); the gap closing member 84 in this embodiment is EPDM (ethylene propylene diene rubber). With the longitudinal end of the reinforcing member 7 received between the pair of leading pieces 81, 82, the longitudinal end edge of the reinforcing member 7 abuts against the gap closing member 84. With the longitudinal end of the reinforcing member 7 connected to the connecting fitting 8, the gap closing member 84 is pressed (compressed) between the longitudinal end edge of the reinforcing member 7 and the inner surface of the lower half 801 of the leading piece 80.

[0032] The connecting fitting 8 abuts the projection piece 80 against the lower end of the side edge 30 of the guide rail base frame 3 and fixes it with a screw (bolt) 9 and a nut 9', thereby fixing the longitudinal end of the reinforcing member 7 to the lower end of the side edge 30 of the guide rail base frame 3 via the connecting fitting 8 (see Figure 3, etc.). The height position and posture of the connecting fitting 8 relative to the projection edge 30 of the guide rail base frame 3 are variable, and by adjusting the height position and posture of the connecting fitting 8, the posture of the reinforcing member 7 relative to the projection edge 30 of the guide rail base frame 3 can be changed.

[0033] In this embodiment, the connecting fitting 8 is fixed to the lower end portion of the side edge 30 of the guide rail base frame 3 using two screws 9, a first screw 9A and a second screw 9B. In this embodiment, the first screw 9A and the second screw 9B are the same screw. A first elongated hole 90 and a second elongated hole 91 extending parallel to each other in the height direction are formed at the lower end portion of the side edge 30 of the guide rail base frame 3, and the second width d2 of the second elongated hole 91 is larger than the first width d1 of the first elongated hole 90. The first width d1 of the first elongated hole 90 is slightly larger than the outer shape of the shank 9A' of the first screw 9A so that the shank 9A' of the first screw 9A can be inserted therethrough, and the shank 9A' can move up and down and rotate within the first elongated hole 90. The second width d2 of the second elongated hole 91 is larger than the outer diameter of the shaft portion 9B' of the second screw 9B (approximately 1.5 times the shaft diameter) and is designed to allow the shaft portion 9B' of the second screw 9B to pass through, so that the shaft portion 9B' can move up and down and in the width direction within the second elongated hole 91 (clearance between the second elongated hole 91 and the shaft portion 9B').

[0034] In this embodiment, the first elongated hole 90 is located on the indoor side (closer to the exterior wall W) of the second elongated hole 91, and the shank 9A' of the first screw 9A inserted through the first elongated hole 90 serves as a tilting axis (on the X-axis in FIG. 3), allowing the tip sides (farther from the exterior wall W) of the connecting fitting 8 and the reinforcing member 7 to move up and down. At this time, the second screw 9B (position of the insertion hole 83) can move within the second width d2 of the second elongated hole 91, and the tilt of the reinforcing member 7 in the indoor / outdoor direction can be adjusted even when the second screw 9B is inserted.

[0035] The height position of the longitudinal end of the reinforcing member 7 relative to the lower end of the side edge 30 of the guide rail base frame 3 can be adjusted within the height dimensions of the first elongated hole 90 and the second elongated hole 91. By making the height positions of both longitudinal ends of the reinforcing member 7 different relative to the lower end of the side edge 30 of the left and right guide rail base frames 3, the reinforcing member 7 can be tilted in the opening width direction (using the shanks of the screws 10 as fulcrums), and even if the floor surface FL is tilted in the opening width direction, the lower surface 71 of the reinforcing member 7 can be placed on the floor surface FL by adjusting the tilt position of the reinforcing member 7 in accordance with the tilt (see FIG. 9).

[0036] In the embodiment shown in the left diagram of Figure 12, a connecting fitting 8 connected to one longitudinal end of a reinforcing member 7 has its projection piece 80 abutted against the projection edge 30 of the guide rail base frame 3, with the two insertion holes 83 of the projection piece 80 of the connecting fitting 8 coinciding with the lower ends of a first elongated hole 90 and a second elongated hole 91 at the lower end of the projection edge 30 of the guide rail base frame 3, and a first screw 9A and a second screw 9B are inserted through the insertion holes 83, the first elongated hole 90 and the second elongated hole 91 and fixed with a nut 9'. In the embodiment shown, the lower end of one of the side frames (the guide rail base frame 3 and the guide rail 4) is spaced above the floor surface FL.

[0037] In the embodiment shown in the right diagram of Figure 12, the connecting fitting 8 connected to the other longitudinal end of the reinforcing member 7 has its projection piece 80 abutting against the projection edge 30 of the guide rail base frame 3, with the two insertion holes 83 of the projection piece 80 of the connecting fitting 8 coinciding with the upper end positions of the first elongated hole 90 and the second elongated hole 91 at the lower end position of the projection edge 30 of the guide rail base frame 3, and the first screw 9A and second screw 9B are inserted through the insertion holes 83, first elongated hole 90 and second elongated hole 91 and fixed with a nut 9'. In the embodiment shown, the lower end of the other side frame (the guide rail base frame 3 and the guide rail 4) abuts against the floor surface FL.

[0038] As shown in Figure 10, when the reinforcing member 7 is in a horizontal position, the reinforcing member 7 and a pair of facing pieces 81, 82 of the horizontal connecting fitting 8 are parallel, the longitudinal edge of the reinforcing member 7 and the inner surface of the facing piece 80 are equally spaced along the height, and the gap closing member 84 is compressed approximately evenly along the height, and is compressed to a uniform thickness along the height. As shown in Figure 11, when the reinforcing member 7 is in an inclined position, the reinforcing member 7 is inclined relative to the pair of horizontal facing pieces 81, 82 of the reinforcing member 7 and the connecting fitting 8, and the longitudinal edge of the reinforcing member 7 and the inner surface of the facing piece 80 gradually change along the height, but the compression state of the gap closing member 84 changes depending on the position of the reinforcing member 7, changing the thickness, so that no gap occurs between the facing piece 80 and the longitudinal edge of the reinforcing member 7.

[0039] As shown in Figures 1 and 13, the floor surface FL is a downward inclined surface facing the outdoors. The left diagram of Figure 13 shows the reinforcing member 7 and connecting fitting 8 in a tilted state in the left diagram of Figure 12, and the right diagram of Figure 13 shows the reinforcing member 7 and connecting fitting 8 in a tilted state in the right diagram of Figure 12. As shown in Figure 7, the connecting fitting 8 can tilt with respect to the lower end portion of the projected edge 30 of the guide rail base frame 3, with the shank 9A' of the first screw 9A as the tilting axis.

[0040] Connecting fittings 8 are attached to both longitudinal ends of the reinforcing member 7, and the projecting pieces 80 of the connecting fittings 8 are abutted against the lower end portions of the projecting edges 30 of the guide rail base frame 3. The two insertion holes 83 are aligned with the first elongated holes 90 and the second elongated holes 91. With the first screw 9A and the second screw 9B inserted into the insertion holes 83 and the first elongated holes 90, and the insertion holes 83 and the second elongated holes 91, the shank 9A' of the first screw 9A can rotate within the first elongated hole 90, and the shank 9B' of the second screw 9B (insertion holes 83 and 91) can rotate within the first elongated hole 90. The position of the reinforcing member 7 can be moved within the second width d2 of the second elongated hole 91, and the tilt of the reinforcing member 7 can be adjusted using the shaft 9A' of the first screw 9A as the tilting axis according to the inclination of the floor surface FL in the indoor / outdoor direction.By fixing the first screw 9A and the second screw 9B with nuts 9' while the underside 71 of the reinforcing member 7 is abutted against the floor surface FL, both longitudinal ends of the reinforcing member 7 can be fixed to the lower end positions of the side edges 30 of the guide rail base frame 3 via the connecting fittings 8.

[0041] In this embodiment, a reinforcing member 7 is provided at the lower end portions of the left and right side frames (guide rail base frame 3 and guide rail 4) to connect the lower end portions of the side edges 30 of the guide rail base frame 3.Therefore, when strong wind pressure acts on the shutter curtain 5 with the opening fully closed, the deflection of the left and right guide rail base frames 3 is restricted, and the reinforcing member 7 resists the force acting in the direction of opening the guide rail base frame 3, preventing the side frames from opening.

[0042] The reinforcing member 7 is connected to the lower end of the guide rail base frame 3 via connecting fittings 8, and the attachment of the reinforcing member 7 does not affect the waterproof layer 11. The reinforcing member 7 is placed on the indoor side of the lower end of the shutter curtain 5 (seat plate 51 that rests on the floor FL) when fully closed, and the reinforcing member 7 is located away from the lower wall surface W' on the outdoor side, which prevents the reinforcing member 7 from being erroneously fixed to the lower wall surface W' with a screw.

[0043] When placed on the floor surface FL, the reinforcing member 7 has its longitudinal ends fixed to the lower ends of the side edges 30 of the guide rail base frame 3. This ensures that even if the reinforcing member 7 is stepped on, the load is supported by the floor surface FL, preventing damage or deformation of the reinforcing member 7. The reinforcing member 7 has variable inclinations in the indoor / outdoor direction and in the opening width direction. Even if the floor surface FL is a downwardly sloping surface from the indoor side to the outdoor side, or even if the floor surface FL has an inclined surface in the opening width direction, the inclination posture of the reinforcing member 7 (the inclination of the reinforcing member 7 in the indoor / outdoor direction and the opening width direction) can be adjusted to place the underside 71 of the reinforcing member 7 in line with the inclination of the floor surface FL. An elastic member or elastic layer may be provided on the underside 71 of the reinforcing member 7 to absorb unevenness in the floor surface FL. [Explanation of symbols]

[0044] 3 Guide rail base frame (side frame) 30 Side (prospective side) 31 Fixed Edge 4 Guide rail (side frame) 5. Shutter Curtain 6 Shutter case (shutter storage section) 60 Inner lintel 7 Reinforcement members 70 Top part 71 Bottom part 72 Mizume surface section 73 Mizume surface section 8. Connecting fittings (connecting means) 80 Prospective Pieces 81 Finding Piece 82 Finding Piece 83 Insertion hole (height adjustment part, indoor / outdoor tilt adjustment part) 84 Gap sealing material 9 screws 9A No. 1 screw (height adjustment part, indoor / outdoor tilt adjustment part) 9A´ Axis (height adjustment unit, indoor / outdoor tilt adjustment unit, tilting axis) 9B No. 2 screw (height adjustment part, indoor / outdoor tilt adjustment part) 9B´ Shaft (height adjustment, indoor / outdoor tilt adjustment) 90 First long hole (height adjustment part, indoor / outdoor tilt adjustment part) 91 Second long hole (height adjustment part, indoor / outdoor tilt adjustment part) 10 screws 11 Waterproof layer FL floor surface W External wall (framework) W´ Lower wall (wall) d1 1st width d2 2nd width

Claims

1. In a window shutter, a shutter curtain opens and closes the space formed by a shutter storage section provided in a cantilevered shape on the main body, the left and right side frames, and the floor. A reinforcing member is provided to connect the lower end portions of the side frames, The reinforcing member has longitudinal ends fixed to the side frames when placed on the floor surface. Window shutters.

2. The reinforcing member is located inside the room relative to the lower end of the shutter curtain when fully closed.

10. The window shutter of claim 1.

3. A wall surface is formed at the indoor end of the floor surface, The reinforcing member is located at a distance from the wall surface to the exterior.

3. A window shutter according to claim 1 or 2.

4. The side frame comprises a guide rail base frame provided in a corrugated shape on the main body, and a guide rail attached to the tip of the guide rail base frame, The reinforcing member connects the lower end portions of the guide rail base frame. A window shutter according to any one of claims 1 to 3.

5. The reinforcing member has a variable inclination in the indoor / outdoor direction and / or the opening width direction. A window shutter according to any one of claims 1 to 4.

6. The longitudinal ends of the reinforcing members are fixed to the side frames by connecting means, The connecting means includes a height adjustment portion at the longitudinal end of the reinforcing member and an indoor / outdoor tilt adjustment portion of the reinforcing member. A window shutter according to any one of claims 1 to 5.

7. the connecting means includes a connecting metal fitting fixed to a longitudinal end of the reinforcing member, The side frame and the connecting fitting are formed with screw insertion holes for fixing the projected surface of the side frame and the projected piece of the connecting fitting, and one of the insertion holes is an elongated hole extending in the height direction, and the screw extends in the projected direction, The height of the longitudinal end of the reinforcing member is adjustable within the elongated hole; The reinforcing member is tiltable toward the indoor side with the screw as a tilting axis.

7. A window shutter according to claim 6.

8. The elongated hole is composed of a first elongated hole and a second elongated hole extending parallel to each other in a height direction, a second width of the second elongated hole is larger than a first width of the first elongated hole, and a screw inserted through the first elongated hole serves as a tilting axis.

8. A window shutter according to claim 7.

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