Opening / closing device and method for reinforcing the same

Abstract

To provide an opening / closing device having a reinforcement structure and easily installable.SOLUTION: An opening / closing device 1 equipped with an opening / closing body 11 that opens and closes vertically comprises: vertically movable reinforcing members 15a and 15b; reinforcing member receiving members 16a and 16b that hold the reinforcing members 15a and 15b at prescribed heights on both sides of the reinforcing members 15a and 15b in a width direction; and a reinforcing member lifting member 17 attached to the opening / closing body 11 to lift the reinforcing members 15a and 15b. During upward movement of the reinforcing member lifting member 17 accompanying an operation of opening the opening / closing body 11, the reinforcing members 15a and 15b held at the prescribed heights by the reinforcing member receiving members 16a and 16b are scooped up by the reinforcing member lifting member 17 and moved upward. During downward movement of the reinforcing member lifting member 17 holding the reinforcing members 15a and 15b accompanying an operation of closing the opening / closing body 11, the reinforcing members 15a and 15b are placed on the reinforcing member receiving members 16a and 16b so as to be held at the prescribed heights.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to an opening and closing device such as a shutter device, and more particularly to an opening and closing device having a reinforcing structure and a reinforcing method for an opening and closing device. [Background technology]

[0002] In recent years, due to the effects of global warming and other factors, there has been a trend toward typhoons becoming larger and stronger, and there have been cases where debris from typhoons and tornadoes has collided with houses. Patent Documents 1 and 2 disclose techniques for protecting windows from wind pressure caused by typhoons and the resulting collision of flying objects. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent No. 6924339 [Patent Document 2] Patent No. 7175444 Summary of the Invention [Problem to be solved by the invention]

[0004] The technologies disclosed in Patent Documents 1 and 2 both require the installation of components for attaching window protection components (screens or cover components) to structures (exterior walls) or the ground around the windows, and essentially require construction by a contractor, which means that the construction is time-consuming and costly. Furthermore, the technologies disclosed in Patent Documents 1 and 2 are applied to windows that are not equipped with an opening and closing device such as a shutter device. An opening and closing device such as a shutter device functions as a protective device for the window, and in the past, the general understanding was that there was little thought given to attaching a component for further protecting the window in addition to the shutter device, which is a protective device. However, due to the increasing scale and strength of typhoons in recent years, there is a concern that even if a window is equipped with an opening and closing device such as a shutter device, if a flying object hits it, the opening and closing body such as a shutter curtain may become deformed, and this may hit the window glass and cause the window glass to break.In order to reduce such problems, it may be necessary to provide additional reinforcing structures to opening and closing devices such as shutter devices.

[0005] In view of the above, the present invention aims to provide an opening and closing device having an opening and closing body that opens and closes vertically, and having a reinforcing structure that can be easily installed, and a method for reinforcing an opening and closing device. [Means for solving the problem]

[0006] (Configuration 1) An opening and closing device having an opening and closing body that opens and closes vertically, comprising: a reinforcement material that can move up and down; reinforcement material receiving members that hold the reinforcement material at a predetermined height on both sides of the width of the reinforcement material; and reinforcement material lifting members that are attached to the opening and closing body and lift the reinforcement material, wherein when the reinforcement material lifting member moves upward in conjunction with the operation of opening the opening and closing body, the reinforcement material held at the predetermined height by the reinforcement material receiving member is scooped up by the reinforcement material lifting member and moved upward, and when the reinforcement material lifting member holding the reinforcement material moves downward in conjunction with the operation of closing the opening and closing body, the reinforcement material is placed on the reinforcement material receiving member and held at the predetermined height.

[0007] (Configuration 2) 2. The opening and closing device according to claim 1, wherein the reinforcement receiving member and the reinforcement lifting member are configured so that the reinforcement cannot be removed downward but can be removed upward.

[0008] (Configuration 3) The opening and closing device according to configuration 1 or 2, wherein a plurality of the reinforcing materials are provided, and the reinforcing material receiving members are installed at a plurality of different heights, a first widthwise spacing of the reinforcing material receiving members provided on the upper side is larger than a second widthwise spacing of the reinforcing material receiving members provided on the lower side, and the widthwise length of the reinforcing material held by the reinforcing material receiving member on the lower side is formed to be shorter than the first spacing and longer than the second spacing.

[0009] (Configuration 4) The opening and closing device according to configuration 3, wherein the lower side of the reinforcing material receiving member is formed with a position regulating member for regulating the widthwise position of the reinforcing material held by the lower side of the reinforcing material receiving member.

[0010] (Configuration 5) The opening and closing device according to configuration 1, wherein a plurality of the reinforcing materials are provided, and the reinforcing material receiving members are installed at a plurality of different heights, the reinforcing material receiving member provided on the upper side has an insertion portion having a first width in the depth direction, the reinforcing material receiving member provided below this has an insertion portion or a non-insertion portion of a second width smaller than the first width, the reinforcing material held by the reinforcing material receiving member on the upper side has an engagement portion thicker than the first width, and the reinforcing material held by the reinforcing material receiving member on the lower side has an engagement portion narrower than the first width and thicker than the second width or is engaged by the non-insertion portion.

[0011] (Configuration 6) An opening and closing device described in any one of configurations 1 to 5, wherein the opening and closing body is a shutter curtain formed by connecting multiple slats, and the reinforcing material receiving member is provided on the seat plate of the shutter curtain.

[0012] (Configuration 7) A method for reinforcing an opening / closing device having an opening / closing body that opens and closes vertically, comprising providing reinforcement material support members on both sides of the width of a reinforcement material that can move up and down, the reinforcement material being held at a predetermined height, and providing reinforcement material lifting members on the opening / closing body that lift the reinforcement material, such that when the reinforcement material lifting member moves upward in conjunction with the operation of opening the opening / closing body, the reinforcement material held at the predetermined height by the reinforcement material support members is scooped up and moved upward by the reinforcement material lifting member, and when the reinforcement material lifting member holding the reinforcement material moves downward in conjunction with the operation of closing the opening / closing body, the reinforcement material rests on the reinforcement material support member and is held at the predetermined height. [Effects of the Invention]

[0013] According to the present invention, it is possible to provide a switchgear having a reinforcement structure that can be easily installed, and a method for reinforcing a switchgear. [Brief explanation of the drawings]

[0014] [Figure 1] FIG. 1 is a vertical cross-sectional view showing an opening / closing device (closed state) according to an embodiment of the present invention. [Figure 2] FIG. 1 is a diagram illustrating the vicinity of one end in the width direction of an opening / closing device according to an embodiment. [Figure 3] FIG. 1 is a diagram showing an opening / closing device (open state) according to an embodiment; [Figure 4] FIG. 1 is a diagram illustrating a positional relationship between a reinforcing member, a reinforcing member receiving member, and a reinforcing member lifting member of an opening and closing device according to an embodiment. [Figure 5] FIG. 10 is a diagram showing another example of a reinforcing material and a reinforcing material receiving member. [Figure 6] FIG. 10 is a diagram showing another example of a reinforcing material and a reinforcing material receiving member. DETAILED DESCRIPTION OF THE INVENTION

[0015] Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings. Note that the following embodiment is one form for realizing the present invention, and is not intended to limit the scope of the present invention.

[0016] FIG. 1 is a longitudinal cross-sectional view showing an outline of a state in which an opening / closing body (shutter curtain) 11 of an opening / closing device (shutter device) 1 of this embodiment is closed. FIG. 2 is a diagram for explaining the configuration of a reinforcing member and the like provided in the opening / closing device 1, where FIG. 2(a) is a rear view (viewed from the indoor side) showing the vicinity of one end in the width direction, and FIG. 2(b) is a horizontal cross-sectional view showing the vicinity of one end in the width direction (the height positions at which the upper reinforcing member 15a and the lower reinforcing member 15b are installed, respectively). FIG. 3 is a diagram showing an outline of a state in which the opening / closing body 11 of the opening / closing device 1 is open, where FIG. 3(a) is a longitudinal cross-sectional view, FIG. 3(b) is a rear view showing the vicinity of one end in the width direction, and FIG. 3(c) is a horizontal cross-sectional view showing the vicinity of one end in the width direction. FIG. 4 is a schematic diagram (rear view) showing the positional relationship of the reinforcing member, reinforcing member receiving member, and reinforcing member lifting member. Note that all of these are conceptual diagrams for explaining the concept of the present invention (for example, they are not accurately represented as cross-sectional views). The width direction of the opening / closing body (shutter curtain) 11 (the direction perpendicular to the paper surface in Figure 1) is referred to as the width direction, the direction from indoors (the right side in Figure 1) to outdoors (the left side in Figure 1) (or vice versa) (the left-right direction in Figure 1) is referred to as the depth direction, and the up-down direction (the up-down direction in Figure 1) is referred to as the up-down direction.

[0017] The opening and closing device 1 of this embodiment is a shutter device that is installed on a window, and is provided with a reinforcing structure that is installed and stored as the shutter is opened and closed. The opening and closing device 1 of this embodiment is A shutter curtain 11 that opens and closes up and down; a shutter case 12 located at the top of the device and equipped with a winding mechanism for winding up the shutter curtain 11; a guide rail 13 for guiding the up and down movement of the shutter curtain 11; Reinforcements 15a and 15b that are movable up and down; Reinforcement material receiving members 16a, 16b that hold the reinforcing materials 15a, 15b at a predetermined height on both sides of the reinforcing materials 15a, 15b in the width direction; a reinforcing member lifting member 17 attached to the shutter curtain 11 and lifting the reinforcing members 15a and 15b; It is equipped with:

[0018] The shutter curtain 11 is made up of multiple slats extending in the width direction, and has a seat plate 111 connected to its lower end. The shutter curtain is made up of multiple slats connected together, and has a seat plate at its lower end, which is the same as conventional shutter curtains (any configuration can be used as a shutter curtain for a shutter device), so detailed explanations of the slats and seat plate will be omitted here. The shutter case 12 located at the top of the device and the shutter curtain winding mechanism housed therein may be the same as conventional ones, and any configuration used in a shutter device may be used (for example, any configuration may be used, including manual and automatic). In addition, the guide rail 13 that guides the up and down movement of the shutter curtain 11 and the frame (mounting member) 14 for attaching it to the wall W (see Figure 2(b)) may also be the same as conventional ones, and any configuration used in an opening and closing device may be used, so a description of these will be omitted here.

[0019] The opening and closing device 1 of this embodiment is provided with two reinforcing members: a reinforcing member 15a located on the upper side and a reinforcing member 15b located on the lower side. The reinforcing material extends across the width of the shutter curtain 11 on the indoor side (between the shutter curtain 11 and the window) to reduce the shutter curtain 11 from bending toward the indoor side due to wind pressure or when a flying object hits it. This reduces the risk of the window glass breaking and the noise caused by the shutter curtain flapping. In this embodiment, reinforcing members 15a and 15b are both rod-shaped members (reinforcing bars) and, as shown in Fig. 2, have locking portions 15a1 and 15b1 at both ends in the width direction. Reinforcing members 15a and 15b have different configurations for locking portions 15a1 and 15b1, but the other portions (bar main bodies) have the same configuration. Note that Fig. 2 and Figs. 3(b) and (c) only show one end side, but the other side has the same (bilaterally symmetrical) configuration. The locking portions 15a1, 15b1 are configured to be thinner than the bar main body portion, and have wide-diameter portions 15a11, 15b11 formed at both ends, which form a step between the narrowed portion and the end. The step serves as a catch when engaging with the reinforcing material receiving members 16a, 16b and the reinforcing material lifting member 17, and also functions as a "position regulating member for regulating the widthwise position of the reinforcing material." The locking portion 15a1 of the reinforcing member 15a located on the upper side is formed to be longer in the width direction than the locking portion 15b1 of the reinforcing member 15b located on the lower side, so that the overall length of the reinforcing member 15a located on the upper side is longer than that of the reinforcing member 15b located on the lower side. The reinforcing members 15a, 15b can be made of any material with the required strength, such as resin or metal. Shock-absorbing materials such as mohair or rubber may be provided on either or both of the front side of the reinforcing members 15a, 15b facing the shutter curtain 11 and the back side facing the window. By providing a shock-absorbing material on the window side, the risk of damaging the window glass can be reduced, and by providing a shock-absorbing material on the shutter curtain side, noise caused by the flapping of the shutter curtain can be further reduced.

[0020] The reinforcing material receiving members 16a, 16b are members that hold the reinforcing materials 15a, 15b at a predetermined height on both sides of the width of the reinforcing materials 15a, 15b, and are each fixed to the guide rail 13 or the frame 14 (the fixing destination of the reinforcing material receiving members 16a, 16b is not limited to this, and they may also be fixed to, for example, a wall surface W). The reinforcing material receiving members 16a, 16b have a U-shaped portion that opens at the top in a side view (when viewed from the width direction) (see FIG. 3(a)), and this U-shaped portion is common in that it receives and holds the locking portions 15a1, 15b1 of the reinforcing materials 15a, 15b. The U-shaped portion "prevents the reinforcing material from slipping out downwards, but allows the reinforcing material to slip out upwards." The reinforcing material receiving member 16a installed on the upper side is configured so that its U-shaped portion is located slightly inward in the width direction from the large-diameter portions 15a11 at both ends of the reinforcing material 15a (see FIG. 2(a)). Also, the distance between the reinforcing material receiving members 16a installed on both ends in the width direction is configured to be greater than the overall length of the reinforcing material 15b. The reinforcing material receiving member 16b installed on the lower side is configured so that its U-shaped portion is located slightly inward in the width direction from the large-diameter portions 15b11 at both ends of the reinforcing material 15b in order to receive the reinforcing material 15b. The reinforcing material receiving member 16b is also provided at a position facing both end faces of the reinforcing material 15b in the width direction, and has position restricting members 16b1 for restricting the position of the reinforcing material 15b in the width direction (reducing positional deviation in the width direction). The installation height of the upper reinforcement receiving member 16a and the lower reinforcement receiving member 16b may be any height, but basically, the reinforcement should be arranged at equal intervals in the height direction of the shutter curtain 11.

[0021] The reinforcing material lifting member 17 is a member that scoops up the reinforcing materials 15a and 15b and moves them upward, and is fixed to the base plate 111 of the shutter curtain 11. Therefore, the reinforcing material lifting member 17 moves up and down in accordance with the opening and closing operation (up and down movement) of the shutter curtain 11. The reinforcing material lifting member 17 has a U-shaped portion that opens at the top in a side view (when viewed from the width direction), and this U-shaped portion receives and holds the locking portions 15a1, 15b1 of the reinforcing materials 15a, 15b, which are common to both. The U-shaped portion "prevents the reinforcing material from slipping out downwards, but allows the reinforcing material to slip out upwards." In order to scoop up the reinforcing materials 15a and 15b, the reinforcing material lifting member 17 is configured so that its U-shaped portion is positioned slightly outward in the width direction from the step between the main body portion and the engaging portions 15a1 and 15b1 at both ends of the reinforcing materials 15a and 15b (see Figure 3(b)).

[0022] FIG. 4 is an explanatory diagram showing the relative positional relationship between the reinforcing members 15a and 15b, the reinforcing member receiving members 16a and 16b, and the reinforcing member lifting member 17 described above. As shown in the figure, the first widthwise spacing L1 of the upper reinforcing material receiving member 16a is shorter than the widthwise length of the reinforcing material 15a and is longer than the second widthwise spacing L2 of the lower reinforcing material receiving member 16b. Furthermore, the widthwise length L3 of the reinforcing material 15b held by the lower reinforcing material receiving member 16b is shorter than the first spacing L1 and longer than the second spacing L2. With the above configuration, when the upper reinforcement 15a descends, it engages with and is held by the reinforcement receiving member 16a provided on the upper side, while when the lower reinforcement 15b moves up and down, the reinforcement receiving member 16a provided on the upper side does not interfere, and the lower reinforcement 15b engages with and is held by the reinforcement receiving member 16b. Furthermore, the installation interval L4 of the reinforcing material lifting members 17 in the width direction is narrower than the interval L1 between the reinforcing material receiving members 16a and the interval L2 between the reinforcing material receiving members 16b. Therefore, the reinforcing material receiving members 16a, 16b do not interfere with the up and down movement of the reinforcing material lifting members 17, and as the reinforcing material lifting members 17 rise, they are able to scoop up both the reinforcing materials 15a and 15b.

[0023] As can be understood from the above explanation and from the state in which the shutter curtain 11 is lowered in Figures 1 and 2 and the state in which the shutter curtain 11 is raised in Figure 3, according to the opening and closing device 1 of this embodiment, the reinforcing materials 15a and 15b are installed and stored in conjunction with the opening and closing operation (up and down movement) of the shutter curtain 11. More specifically, when the shutter curtain 11 is raised from the closed state shown in Figures 1 and 2 to the open state shown in Figure 3, the reinforcing material lifting member 17 attached to the shutter curtain 11 also rises, picking up the lower reinforcing material 15b and the upper reinforcing material 15a in order and moving them to the upper part. Then, by raising the shutter curtain 11 to the open state shown in Figure 3, the reinforcing materials 15a and 15b are also stored at the upper part (the reinforcing materials may be configured to be completely stored within the shutter case 12, or may be configured so that some or all of the reinforcing materials are located outside the shutter case 12). On the other hand, when the shutter curtain 11 is lowered from the open state shown in FIG. 3 to the closed state shown in FIGS. 1 and 2, the reinforcing member lifting member 17 holding the reinforcing members 15a and 15b also descends. As described above, during this descent, the reinforcing member 15b does not engage with the reinforcing member receiving member 16a provided on the upper side, so it passes the reinforcing member receiving member 16a and continues to descend. Meanwhile, the reinforcing member 15a engages with the reinforcing member receiving member 16a provided on the upper side and is held therein. As the reinforcing member lifting member 17, which is only holding the reinforcing member 15b, continues to descend, the reinforcing member 15b engages with the reinforcing member receiving member 16b provided on the lower side and is held therein. This allows the reinforcing members 15a and 15b to be installed at their respective predetermined heights. That is, the opening and closing device 1 "scoops up the reinforcement material held at a predetermined height by the reinforcement material receiving member and moves it upward when the reinforcement material lifting member moves upward in accordance with the operation of opening the opening and closing body, It is configured so that when the reinforcing material lifting member holding the reinforcing material moves downward in conjunction with the action of closing the opening / closing body, the reinforcing material rests on the reinforcing material receiving member and is held at a predetermined height.

[0024] As described above, the opening and closing device 1 of this embodiment is provided with reinforcing members 15a, 15b that extend across the width of the indoor side of the shutter curtain 11 (between the shutter curtain 11 and the window), thereby reducing the deflection of the shutter curtain 11 toward the indoor side in the event of wind pressure or a collision with a flying object, thereby reducing the risk of the window glass breaking and noise caused by the shutter curtain flapping. In addition, since the reinforcing materials 15a and 15b are configured to be installed and stored in conjunction with the opening and closing operation (up and down movement) of the shutter curtain 11, no special work is required to install the reinforcing members, making it extremely convenient.

[0025] In this embodiment, the structure for holding multiple reinforcing materials that move up and down at their respective heights is exemplified by reinforcing materials with different widthwise lengths, but the present invention is not limited to this. Figures 5 and 6 each show another example of a "structure for holding multiple reinforcing members that move up and down at their respective heights" (a conceptual illustration, viewed from the side (along the width direction)).

[0026] In the example of Figure 5, the locking portion 15a1' of the upper reinforcing material 15a' is formed thicker in the depth direction than the locking portion 15b1' of the lower reinforcing material 15b', and the reinforcing material receiving member 16a' provided on the upper side has an insertion portion 16a1 that allows the locking portion 15b1' to pass through but does not allow the locking portion 15a1' to pass through. As can be seen from Figures 5(a)-(c) (reinforcement-material lifting member 17 is omitted in Figure 5(b) for clarity), when the reinforcing-material lifting member 17 holding the reinforcing materials 15a' and 15b' descends, the reinforcing material 15a' engages with and is held by the reinforcing-material receiving member 16a' provided on the upper side. Meanwhile, the locking portion 15b1' of the reinforcing material 15b' passes through the insertion portion 16a1 of the reinforcing-material receiving member 16a' and engages with and is held by the reinforcing-material receiving member 16b'. In this way, the reinforcing materials 15a' and 15b' are installed at their respective predetermined heights. When the reinforcing-material lifting member 17 ascends, the reinforcing materials 15b' and 15a' are successively scooped up and stored at the top. In this example, since there are two reinforcing materials, the lower reinforcing material receiving member 16b' does not have an insertion portion (has a non-insertion portion), but if there are three or more reinforcing materials, the "lower" reinforcing material receiving members that are not the lowest reinforcing material receiving member will sequentially have insertion portions that are narrower in depth width than the "upper" reinforcing material receiving members. In the example of Figure 5, "the reinforcing material receiving member provided on the upper side has an insertion portion having a first width in the depth direction, the reinforcing material receiving member on the lower side has an insertion portion or a non-insertion portion of a second width smaller than the first width, the reinforcing material held by the reinforcing material receiving member on the upper side has an engagement portion wider than the first width, and the reinforcing material held by the reinforcing material receiving member on the lower side has an engagement portion narrower than the first width and wider than the second width or engaged by the non-insertion portion."

[0027] In the example of FIG. 6, the reinforcing members 15a″ and 15b″ (and the reinforcing member receiving members 16a″ and 16b″) are arranged to be shifted in the depth direction. As can be seen from Figures 6(a)-(c) (reinforcement-material lifting member 17'' is omitted in Figure 6(b) for clarity), when the reinforcing-material lifting member 17'' holding the reinforcing materials 15a'' and 15b'' is lowered, reinforcing material 15a'' engages with and is held by the reinforcing-material receiving member 16a'' provided on the upper side. Also, reinforcing material 15b'' engages with and is held by the reinforcing-material receiving member 16b'' provided on the lower side. In this way, reinforcing materials 15a'' and 15b'' are placed at their respective predetermined heights. When the reinforcing-material lifting member 17'' is raised, reinforcing materials 15b'' and 15a'' are scooped up in order and stored at the top. In the example of FIG. 6, reinforcing material 15a" and reinforcing material 15b" can be a common member, and reinforcing material receiving member 16a" and reinforcing material receiving member 16b" can also be a common member. On the other hand, more installation space in the depth direction is required.

[0028] In this embodiment, an example is shown in which two reinforcing members, reinforcing member 15a located on the upper side and reinforcing member 15b located on the lower side, but the present invention is not limited to this and it may be possible to have only one reinforcing member or three or more reinforcing members (even in the case of three or more reinforcing members, based on the concept explained above, each reinforcing member can be installed at a predetermined height as the opening and closing body is opened and closed, and can also be stored at the top). Furthermore, in this embodiment, the reinforcing material is a rod-shaped member, but the present invention is not limited to this, and it may be formed of, for example, a plate-shaped member. However, in consideration of ease of storage when moved to the upper part, it is preferable that the reinforcing members are rod-shaped members, and that the number of the reinforcing members is about 1 to 3.

[0029] In this embodiment, the reinforcement lifting member 17 is fixed to the seat plate 111 as an example, but the present invention is not limited to this, and the reinforcement lifting member may be any member that is arranged to move up and down in accordance with the opening and closing movement (up and down movement) of the shutter curtain, and may be, for example, one that is installed on the slats of the shutter curtain. In addition, in this embodiment, the reinforcement lifting member is configured to lift the reinforcement near both ends, but the present invention is not limited to this, and the reinforcement may be configured to lift the reinforcement at any position in the width direction. [Explanation of symbols]

[0030] 1...Switchgear 11...Shutter curtain (opening and closing body) 111...Seat board 15a, 15b...Reinforcement 16a, 16b...reinforcement support member 16a1...Passage part 16b1...Position control member 17...Reinforcement lifting member

Claims

1. An opening and closing device having an opening and closing body that opens and closes vertically, A reinforcement member that can move up and down; Reinforcement material receiving members that hold the reinforcing material at a predetermined height on both sides of the reinforcing material in the width direction; a reinforcing material lifting member attached to the opening / closing body and configured to lift the reinforcing material; Equipped with When the reinforcing material lifting member moves upward in accordance with the operation of opening the opening / closing body, the reinforcing material held at a predetermined height by the reinforcing material receiving member is scooped up by the reinforcing material lifting member and moved upward, An opening and closing device configured so that when the reinforcing material lifting member holding the reinforcing material moves downward in conjunction with the operation of closing the opening and closing body, the reinforcing material rests on the reinforcing material receiving member and is held at a predetermined height.

2. The opening and closing device according to claim 1 , wherein the reinforcement receiving member and the reinforcement lifting member are configured so that the reinforcement cannot be pulled out downward but can be pulled out upward.

3. A plurality of the reinforcing members are provided, and the reinforcing member receiving members are installed at a plurality of different heights, 3. The opening and closing device according to claim 2, wherein a first widthwise spacing of the reinforcing material receiving member provided on the upper side is larger than a second widthwise spacing of the reinforcing material receiving member provided on the lower side, and the widthwise length of the reinforcing material held by the reinforcing material receiving member on the lower side is shorter than the first spacing and longer than the second spacing.

4. 4. The opening and closing device according to claim 3, wherein the lower reinforcing material receiving member is formed with a position restricting member for restricting a widthwise position of the reinforcing material held by the lower reinforcing material receiving member.

5. A plurality of the reinforcing members are provided, and the reinforcing member receiving members are installed at a plurality of different heights, 2. The opening and closing device according to claim 1, wherein the reinforcing material receiving member provided on the upper side has an insertion portion having a first width in the depth direction, the reinforcing material receiving member provided below this has an insertion portion or a non-insertion portion of a second width smaller than the first width, the reinforcing material held by the reinforcing material receiving member on the upper side has an engagement portion thicker than the first width, and the reinforcing material held by the reinforcing material receiving member on the lower side has an engagement portion narrower than the first width and thicker than the second width or engaged by the non-insertion portion.

6. 6. An opening and closing device according to claim 1, wherein the opening and closing body is a shutter curtain formed by connecting a plurality of slats, and the reinforcing material receiving member is provided on a seat plate of the shutter curtain.

7. A method for reinforcing an opening / closing device having an opening / closing body that opens and closes vertically, comprising: a reinforcing member receiving member for holding the reinforcing member at a predetermined height on both sides in the width direction of the reinforcing member, the reinforcing member being movable up and down; a reinforcing material lifting member for lifting the reinforcing material is provided on the opening / closing body; A method for reinforcing an opening and closing device, in which when the reinforcing material lifting member moves upward in conjunction with the operation of opening the opening and closing body, the reinforcing material held at a predetermined height by the reinforcing material receiving member is scooped up and moved upward by the reinforcing material lifting member, and when the reinforcing material lifting member holding the reinforcing material moves downward in conjunction with the operation of closing the opening and closing body, the reinforcing material is placed on the reinforcing material receiving member and held at a predetermined height.

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