JP2015227586A - Structure of sheet shutter curtain - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a structure of a sheet shutter curtain capable of securing air permeability, while preventing intrusion of birds even in a closing state.SOLUTION: A structure of a sheet shutter curtain 11 is provided with a sheet body 25 for forming an opening part 29, a fastening member composed of a slide fastener 15 or a surface fastener 17 provided along an inner peripheral edge part of the opening part 29 of the sheet body 25, an attachable-detachable sealed sheet 31, and an attachable-detachable ventilation sheet 33 for providing a fastening object member composed of the slide fastener 15 or the surface fastener 17 detachably fastened to the fastening member provided in the inner peripheral edge part of the opening part 29, in an outer peripheral edge part. A net material may be fixed in advance to the opening part 29 of the sheet body 25.

Description

  The present invention relates to a structure of a sheet shutter curtain.

  2. Description of the Related Art A sheet shutter device that opens and closes and opens and closes a sheet-like shutter curtain, which is provided at an opening of a building or provided at an indoor partition, for example, an entrance / exit of a freezing / refrigeration facility, is known (for example, see Patent Document 1). The sheet shutter curtain is lighter than a general metal shutter, so that the opening / closing operation can be speeded up. Conventionally, a sheet body of a sheet shutter curtain is a sheet material on one side, which divides a space and isolates indoors and outdoors, and air permeability is almost lost. The sheet shutter curtain can be provided not only in a case of being installed alone as a frontage closing device, but also in a state of being juxtaposed with a metal shutter. In this case, it is convenient to use a seat shutter curtain that can be opened and closed at high speed at entrances and exits with high traffic frequency such as trucks and forklifts.

JP2013-189835A

By the way, since the conventional sheet shutter device is a sheet material on one side, if indoors and outdoors are isolated, the air permeability is almost lost. For this reason, in the case of a warehouse or factory where there is no air conditioning, there is a case where it is desired to ensure air permeability as half open.
However, even if the seat shutter device has a lower probability of invasion by flying insects and birds than before, even if the seat shutter device is half-opened, the flying insects and Birds may enter. Particularly, in warehouses and factories that handle foods, once a bird invades and causes fecal damage, a great deal of labor, such as removal and cleaning, must be expended.

  The present invention has been made in view of the above situation, and an object of the present invention is to provide a structure of a sheet shutter curtain that can ensure air permeability while preventing intrusion of birds and the like even in a closed state.

Next, means for solving the above problems will be described with reference to the drawings corresponding to the embodiments.
The structure of the sheet shutter curtain 11 according to claim 1 of the present invention includes a sheet body 25 in which an opening 29 is formed,
Fastening members 15 and 17 provided along the inner peripheral edge of the opening 29 of the seat body 25;
Detachable sheets 31, 17 provided on the outer periphery of the fixing members 15, 17 are detachably attached to the fixing members 15, 17 provided on the inner periphery of the opening 29. 33,
It is characterized by comprising.

  In the structure of the sheet shutter curtain 11, the detachable sheets 31 and 33 are attached to the opening 29 formed in the sheet main body 25, and the opening 29 is covered with the detachable sheets 31 and 33. The opening 29 can be opened by removing the detachable sheets 31 and 33. Thereby, air permeability can be ensured in a state where the sheet shutter curtain 11 is closed. The detachable sheets 31 and 33 contact the fastening members 15 and 17 provided on the inner peripheral edge of the opening 29 with the adherent members 15 and 17 provided on the outer peripheral edge of the removable sheets 31 and 33. It is possible to attach / remove to / from the opening 29 by detaching them from each other such as engaging with each other and peeling off.

The structure of the sheet shutter curtain 11 according to claim 2 of the present invention is the structure of the sheet shutter curtain 11 according to claim 1,
A net material 43 is fixed to the opening 29 of the sheet body 25 in advance.

  With this structure of the sheet shutter curtain 11, it is possible to ensure air permeability without fully opening the opening 29 by the net material 43 fixed to the opening 29 without removing the detachable sheet 31.

The structure of the sheet shutter curtain 11 according to claim 3 of the present invention is the structure of the sheet shutter curtain 11 according to claim 1 or 2,
The removable sheet 31 is formed of the same material as the sheet main body 25.

  In the structure of the sheet shutter curtain 11, the detachable sheet 31 made of the same material as the sheet main body 25 is attached to and detached from the opening 29, so that the opening 29 can be fully opened and closed.

The structure of the sheet shutter curtain 11 according to claim 4 of the present invention is the structure of the sheet shutter curtain 11 according to claim 1,
The removable sheet 33 is formed of a net material.

  In the structure of the seat shutter curtain 11, the removable sheet 33 made of a net material is attached to and detached from the opening 29, so that the opening 29 is not fully opened and is fully opened. Further, the removable sheet 33 made of the net material can be replaced with the removable sheet 31 made of the sheet material. That is, a net material or a sheet material can be attached to the opening 29.

The structure of the sheet shutter curtain 11 according to claim 5 of the present invention is the structure of the sheet shutter curtain 11 according to any one of claims 1 to 4,
At least a part of the fixing member and the to-be-fixed member is formed of a hook-and-loop fastener 17.

  In the structure of the seat shutter curtain 11, the detachable sheets 31 and 33 contact or peel off the surface fasteners 17 provided on the inner peripheral edge of the opening 29 and the outer peripheral edges of the detachable sheets 31 and 33. It can be attached to and detached from the seat body 25.

The structure of the sheet shutter curtain 11 according to claim 6 of the present invention is the structure of the sheet shutter curtain 11 according to any one of claims 1 to 5,
The fastening member provided on at least the upper edge of the opening 29 and the fastening member of the detachable sheet fastened to the fastening member are constituted by a slide fastener 15. It is characterized by that.

  In the structure of the seat shutter curtain 11, since there are portions where the slide fasteners 15 are attached to each other, the detachable sheets 31 and 33 are easy even if the entire sheet shutter curtain 11 is scooped by a strong wind or the like. In other words, the sheet body 25 is not peeled off. Further, when attaching the detachable sheets 31, 33, the dentition 35 of the slide fastener 15 provided at the upper edge of the opening 29 and the dentition 35 provided on the detachable sheets 31, 33 are provided. , And can be temporarily fixed by the dentition engagement / disengagement tool 37 for engaging / disengaging the dentitions.

The structure of the sheet shutter curtain 11 according to claim 7 of the present invention is the structure of the sheet shutter curtain 11 according to any one of claims 1 to 6,
A plurality of the openings 29 of the seat body 25 are formed,
The detachable sheets 31 and 33 are attached to the plurality of openings 29, respectively.

  In the structure of the sheet shutter curtain 11, a plurality of openings 29 are arranged at different positions on the sheet body 25. Each opening 29 has, for example, the same shape, and the detachable sheets 31 and 33 made of the same shape net material and sheet material corresponding to the shape of the opening are used. The material detachable sheets 31 and 33 can be arbitrarily attached.

The structure of the sheet shutter curtain 11 according to claim 8 of the present invention is the structure of the sheet shutter curtain 11 according to any one of claims 1 to 7,
The removable sheet is composed of a plurality of divided removable sheets 39 smaller than the area of the opening 29.

  In the structure of the sheet shutter curtain 11, a plurality of small divided attachment / detachment sheets 39 can be attached to one opening 29. The number of divisions is not limited. The split detachable sheet 39 only needs to be formed in an area that divides the area of the opening 29 into at least two or more. Further, the dividing direction of the divided attachment / detachment sheet 39 may be any of the vertical direction, the horizontal direction, and the diagonal direction of the opening 29. Any number of these split detachable sheets 39 is attached to the opening 29. If all of the divided attachment / detachment sheets 39 are attached, the opening 29 is closed. Further, the opening 29 can be opened only at a portion where the divided attachment / detachment sheet 39 is removed.

  According to the structure of the seat shutter curtain of the first aspect of the present invention, since the detachable sheet can be attached to the opening formed in the seat body, the detachable sheet can be attached even when the seat shutter curtain is closed. By removing, air permeability can be ensured while preventing the entry of birds and the like. The detachable sheet can be easily detached by the fastening member and the fastening member.

  According to the structure of the seat shutter curtain according to claim 2 of the present invention, even if the seat shutter curtain is in a closed state, air permeability can be ensured by the net material provided in the opening, and birds and insects can be secured. Can also be prevented. Moreover, when air permeability is not required, it can be closed by attaching a removable sheet.

  According to the structure of the sheet shutter curtain of the third aspect of the present invention, the opening can be closed by the detachable sheet made of the same material as the sheet main body. In particular, the inflow of cold air in winter can be prevented, and light shielding properties can be obtained.

  According to the structure of the sheet shutter curtain according to the fourth aspect of the present invention, it is possible to replace the attachment / detachment sheet made of the net material and the attachment / detachment sheet made of the sheet material as appropriate. Thereby, the sheet shutter curtain can be a net specification when the air permeability is required, and the sheet specification when the air permeability is not required.

  According to the structure of the sheet shutter curtain according to the fifth aspect of the present invention, the detachable sheet can be easily attached and detached with the hook-and-loop fastener.

  According to the structure of the seat shutter curtain according to the sixth aspect of the present invention, the seat main body and the detachable sheet can be securely fixed by arranging the slide fastener on the hanging base side. Since the slide fastener serves as the upper edge, the work can be performed in a supported state while the detachable sheet is suspended, and the detachment work can be easily and safely performed.

  According to the structure of the sheet shutter curtain of the seventh aspect of the present invention, the opening at a desired position can be combined so as to be closed or ventilated.

  According to the structure of the sheet shutter curtain according to claim 8 of the present invention, it is possible to adjust the degree of air permeability and the degree of shielding, such as partially closing the opening with a detachable sheet that is smaller than the opening. .

It is a perspective view of a sheet shutter device provided with the structure of a sheet shutter curtain concerning an embodiment of the present invention. It is a front view showing the example of a combination of the attachment or detachment sheet | seat with which the sheet | seat shutter curtain shown in FIG. 1 is attached or detached. It is an enlarged view of the slide fastener shown in FIG. It is a perspective view showing the attachment procedure by the hook-and-loop fastener shown in FIG. It is a front view explaining the modification in which the attachment or detachment sheet | seat which consists of a sheet | seat material is attached to the opening part with a net material. FIG. 6 is a perspective view illustrating a state where a removable sheet made of the sheet material illustrated in FIG. 5 is wound up. It is a perspective view showing the example by which the division | segmentation attachment or detachment sheet was attached to the opening part to which the net material was fixed. It is a perspective view showing the example where the attachment or detachment sheet | seat which consists of a net | network material or a sheet material is attached to each of the opening part formed in multiple numbers. It is a perspective view showing the example in which the opening part of FIG. 8 was formed in right and left.

Embodiments according to the present invention will be described below with reference to the drawings.
1 is a perspective view of a sheet shutter device 13 having a structure of a sheet shutter curtain 11 according to an embodiment of the present invention, and FIG. 2 is a front view illustrating an example of a combination of detachable sheets attached to and detached from the sheet shutter curtain 11 shown in FIG. FIG. 3 is an enlarged view of the slide fastener 15 shown in FIG. 2, and FIG. 4 is a perspective view showing an attachment procedure by the surface fastener 17 shown in FIG.
The structure of the sheet shutter curtain 11 according to the present embodiment is applied to the sheet shutter device 13. The sheet shutter device 13 is roughly divided into a curtain storage unit 19, a sheet shutter curtain 11, and a pair of guide rails 21.

  A curtain storage unit 19 is attached to the upper lintel of the building frame provided with the building opening 23 via a base member, and the curtain storage unit 19 is rotated by an electric switch (not shown). Abbreviation). A pair of guide rails 21 are attached to both sides of the building opening 23 so as to extend up and down across the curtain storage portion 19. The guide rail 21 is fixed to the building frame. The guide rail 21 is wound around the take-up shaft, is wound from the curtain entrance / exit of the curtain storage portion 19, and guides the left and right edges of the curtain of the sheet shutter curtain 11 that is fed out.

  The sheet shutter curtain 11 may be a cloth screen, a soft resin sheet such as vinyl chloride or urethane, and a sheet formed of rubber or a rubber-like substance. In addition, when used for disaster prevention purposes such as fire prevention and smoke prevention, for example, silica cloth or glass cloth, or those obtained by spraying or applying or impregnating a fire resistant paint or waterproof covering material as a fire resistant covering material, etc. Can be suitably used. Further, the sheet or the like may be combined with a reinforcing metal such as a wire mesh or a resin wire.

  The sheet shutter curtain 11 includes a sheet main body 25 and a lower attaching / detaching member 27. The seat body 25 is guided up and down by the guide rail 21 being prevented from coming off the left and right sides of the curtain via the side service teeth. The lower attaching / detaching member 27 is detachably attached to the seat body 25. The lower attaching / detaching member 27 has the inner dimensions of the guide rail 21. That is, it does not enter the guide rail.

  In the structure of the sheet shutter curtain 11, an opening 29 is formed in the sheet main body 25. The opening 29 may have a circular shape or the like in addition to a polygonal shape such as a quadrangle in the illustrated example. A fastening member is provided along the inner peripheral edge of the inner peripheral edge of the opening 29 of the seat body 25. A removable sheet is detachably attached to the opening 29 of the sheet body 25. In the detachable sheet, a to-be-attached member that can be attached to and detached from the fastening member is provided on the outer peripheral edge. The detachable sheet is detachable from the opening 29 by a fixing member and a fixing member.

  As shown in FIG. 2, the removable sheet can be formed of a sheet material that is the same material as the sheet main body 25. In this case, the removable sheet is the removable sealing sheet 31. The removable sheet can be formed of a net material. In this case, the removable sheet is the removable ventilation sheet 33.

  In the structure of the seat shutter curtain 11, at least a part of the fixing member and the fixing member is formed of the hook-and-loop fastener 17. In the present embodiment, one of the hook-and-loop fasteners 17 is provided on the three sides of the left and right sides of the opening 29 having a rectangular shape and the lower side. Accordingly, the other side of the hook-and-loop fastener 17 is provided on each side of the removable sealing sheet 31 and the removable ventilation sheet 33. The hook-and-loop fastener 17 may be provided continuously along each side, or may be provided intermittently on each side.

  Further, the structure of the seat shutter curtain 11 is such that the fastening member provided at least on the upper edge of the opening 29 and the fastening member fastened to the fastening member are the slide fastener 15. It may be configured. In the slide fastener 15, the pair of service teeth 35 shown in FIG. 3 and the pair of service teeth 35 are engaged and disengaged by the service teeth engagement / disengagement tool 37. The detachable sheet engaged by the dental dentition engagement / disengagement tool 37 is removed from the opening 29. The detachable sheet is first attached to the upper edge portion of the opening 29 by the slide fastener 15, and then the left and right side portions and the lower side portion are attached by the hook-and-loop fastener 17 as shown in FIG. 4.

FIG. 5 is a front view for explaining a modification in which a removable sheet made of a sheet material is attached to the opening 29 with a net material.
Further, in the structure of the sheet shutter curtain 11, the net material 43 may be fixed to the opening 29 of the sheet main body 25 in advance. In this case, the net member 43 cannot be removed from the opening 29. At the inner peripheral edge portion of the opening 29 to which the net material 43 is fixed, the slide fastener 15 is provided at the upper edge portion, and the surface fastener 17 is provided at the left and right side portions and the lower side portion as described above. Thereby, the removable sealing sheet 31 is detachably attached to the opening 29 so as to cover the net member 43. Therefore, if the removable sealing sheet 31 is removed, air permeability is ensured while preventing the entry of birds and the like, and if the removable sealing sheet 31 is attached, it is possible to prevent the inflow of cold air in winter.

6 is a perspective view showing a state in which the removable sheet made of the sheet material shown in FIG. 5 is wound up.
The removable sealing sheet 31 attached to the opening 29 to which the net member 43 is fixed can open the lower side of the closed sheet shutter curtain 11 in a desired area, for example, by rolling up the lower side. . In this case, for example, a clip-shaped holder (not shown) or the like that holds the wound portion of the removable sealing sheet 31 is provided.

FIG. 7 is a perspective view showing an example in which the split detachable sheet 39 is attached to the opening 29 to which the net member 43 is fixed.
The structure of the sheet shutter curtain 11 may include a plurality of divided removable sheets 39 in which the removable sheet is smaller than the area of the opening 29. The split detachable sheet 39 is made of a sheet material. For example, by attaching the split attachment / detachment sheet 39 to a part of the opening 29 to which the net member 43 is fixed, in the illustrated example, the lower half part, it is possible to ensure air permeability only at the other upper part. It becomes. The split attachment / detachment sheet 39 can be attached / detached at an arbitrary position and height of the opening 29 by the hook-and-loop fastener 17 provided on the side portion.

FIG. 8 is a perspective view showing an example in which a removable sheet made of a net material or a sheet material is attached to each of the plurality of openings 29 formed in the upper and lower sides, and FIG. 9 shows an example in which the openings 29 in FIG. It is a perspective view.
In the structure of the sheet shutter curtain 11, a plurality of openings 29 may be formed in the sheet body 25, and a detachable sheet may be attached to each of the plurality of openings 29. As shown in FIG. 8, when the opening 29 is formed vertically, the removable sealing sheet 31 can be attached to one of the upper and lower openings 29 and the removable ventilation sheet 33 can be attached to the other. Further, as shown in FIG. 9, in the case of the sheet shutter curtain 11 having a large frontage dimension, the opening 29 formed in the seat body 25 has a removable sealing sheet 31 attached to one formed on the left and right sides and attached to the other. For example, the ventilation sheet 33 is attached.

In each of the above-described embodiments, an example in which the left and right ends of the seat body 25 are provided with dentitions and the left and right sides of the curtain are prevented from coming off and guided to the guide rail 21 is shown. The left-right end portion is not a dentition, but may be, for example, the same sheet material as the central portion of the seat body 25 or the like, or an appropriate retaining member for the guide rail 21 provided on the sheet material. The guide rail 21 may be configured such that the end of the seat body 25 can be inserted.
In addition, in the above-described embodiment, the lower detachable member 27 is described as an example in which the guide rail 21 has the inner dimensions, and the left and right end portions do not enter the guide rail. It is good also as a structure inserted in the guide rail 21 by making thickness of a part thin or attaching a member with thin thickness.

  Further, as shown in FIG. 2 and the like, the opening 29 and the fastening members 15 and 17 are not inserted into the guide rail 21 in order to facilitate the attachment / detachment of the attachment / detachment sheets 31 and 33. In addition, it is preferable that the seat shutter curtain 11 is not housed in the curtain housing portion 19 and is exposed to the building opening 23 at least when the seat shutter curtain 11 is fully closed.

Next, the operation of the structure of the sheet shutter curtain 11 having the above configuration will be described.
In the structure of the sheet shutter curtain 11 according to the present embodiment, the removable sheet is attached to the opening 29 formed in the sheet main body 25, and the opening 29 is covered with the removable sheet. When the detachable sealing sheet 31 is made of a sheet material, the opening 29 can be fully opened by removing the detachable sealing sheet 31. Thereby, air permeability can be ensured in a state where the sheet shutter curtain 11 is closed. The detachable sheet is attached to the fixing member provided on the inner peripheral edge of the opening 29 and the to-be-attached member provided on the outer peripheral edge of the detachable sheet by contact or the like, and separated from each other such as peeling off. By doing so, it is possible to attach to and remove from the opening 29.

  Further, in the structure of the sheet shutter curtain 11, air permeability can be secured without fully opening the opening 29 by the net material 43 fixed to the opening 29 without removing the detachable sheet. As a result, with the sheet shutter curtain 11 closed, air permeability can be ensured by the net member 43, and invasion of birds and insects can be prevented.

  Further, in the structure of the sheet shutter curtain 11, the removable sealing sheet 31 made of the same material as the sheet main body 25 is attached to and detached from the opening 29, so that the opening 29 can be fully opened and closed. Become. As a result, the opening 29 can be closed by the removable sealing sheet 31 made of the same material as the seat body 25. In particular, the inflow of cold air in winter can be prevented.

  Further, in the structure of the sheet shutter curtain 11, the removable ventilation sheet 33 made of a net material is attached to and detached from the opening 29, so that the opening 29 is not fully opened and is fully opened. The removable breathable sheet 33 made of the net material can be replaced with the removable sealed sheet 31 made of the sheet material. That is, a net material or a sheet material can be attached to the opening 29. As a result, it is possible to replace the attachment / detachment ventilation sheet 33 made of a net material and the attachment / detachment sealing sheet 31 made of a sheet material as appropriate. As a result, the sheet shutter curtain 11 can have a net specification when air permeability is required, and can have a sheet specification when air permeability is not required. In addition, the removable sheet can be easily replaced even when it is different in color, in design, or damaged.

  In the structure of the sheet shutter curtain 11, the detachable sheet comes into contact with or peels off the hook-and-loop fastener 17 provided on the inner peripheral edge of the opening 29 and the outer peripheral edge of the detachable sheet. Can be attached and removed. As a result, the detachable sheet can be easily detached.

  Further, in the structure of the seat shutter curtain 11, since there are portions where the slide fasteners 15 are fastened to each other, the detachable sheet can be easily seated even if the entire sheet shutter curtain 11 is beaten by a strong wind or the like. The main body 25 is not peeled off or dropped off. When attaching the detachable sheet, the dentition 35 of the slide fastener 15 provided at the upper edge of the opening 29 and the dentition 35 provided on the detachable sheet engage the dentitions. -Temporary fixing is possible by the engagement tooth detachment tool 37 to be disengaged. As a result, the seat fastener 25 and the detachable sheet can be securely fixed by arranging the slide fastener 15 on the hanging side. Furthermore, since the slide fastener 15 is the upper edge portion, the work can be performed in a supported state while suspending the detachable sheet, and the detachment work can be facilitated.

  Further, in the structure of the sheet shutter curtain 11, a plurality of openings 29 are arranged at different positions of the sheet main body 25. Each opening 29 has the same shape, and a removable sheet made of a net material and a sheet material having the same shape according to the shape of the opening is used. 31 can be attached. As a result, the opening 29 at a desired position can be closed or vented.

  Further, in the structure of the sheet shutter curtain 11, a plurality of small divided attachment / detachment sheets 39 can be attached to one opening 29. The number of divisions is not limited. The split detachable sheet 39 only needs to be formed in an area that divides the area of the opening 29 into at least two or more. The dividing direction of the dividing attachment / detachment sheet 39 may be any of the vertical direction, the horizontal direction, and the diagonal direction of the opening 29. Any number of these split detachable sheets 39 is attached to the opening 29. If all of the divided attachment / detachment sheets 39 are attached, the opening 29 is closed. Further, the opening 29 can be opened only at a portion where the divided attachment / detachment sheet 39 is removed. As a result, the air permeability can be adjusted by, for example, partially closing the opening 29 with a detachable sheet that is smaller than the opening 29.

  Therefore, according to the structure of the sheet shutter curtain 11 according to the present embodiment, air permeability can be ensured while preventing the entry of birds and the like even in the closed state. Moreover, the removable air-permeable sheet 33 and the removable air-tight sheet 31 which are removable sheets can be easily detached by the fastening member and the to-be-fixed member, and the air-permeable state and the closed state can be easily selected.

11 ... Seat shutter curtain 15 ... Fastening member, Fastening member (slide fastener)
17: Fastening member, fastened member (surface fastener)
25 ... Sheet body 29 ... Opening 31 ... Removable sheet (Removable sealing sheet)
33 ... Detachable sheet (detachable ventilation sheet)
39 ... Split-detachable sheet 43 ... Net material

Claims (8)

A sheet body in which an opening is formed;
A fastening member provided along an inner peripheral edge of the opening of the seat body;
A detachable sheet in which a to-be-fixed member that is detachably fixed to a fixing member provided in the inner peripheral edge of the opening is provided in an outer peripheral edge;
A structure of a sheet shutter curtain characterized by comprising: The structure of the sheet shutter curtain according to claim 1,
A structure of a sheet shutter curtain, wherein a net material is fixed in advance in the opening of the seat body. The structure of the sheet shutter curtain according to claim 1 or 2,
A structure of a sheet shutter curtain, wherein the removable sheet is formed of the same material as the sheet main body. The structure of the sheet shutter curtain according to claim 1,
A structure of a sheet shutter curtain, wherein the removable sheet is formed of a net material. The structure of the sheet shutter curtain according to any one of claims 1 to 4,
A structure of a seat shutter curtain, wherein at least a part of the fastening member and the to-be-fastened member is formed of a hook-and-loop fastener. The structure of the sheet shutter curtain according to any one of claims 1 to 5,
The fastening member provided at least on the upper edge of the opening side of the opening, and the fastening member of the detachable sheet fastened to the fastening member are configured by a slide fastener. Characteristic sheet shutter curtain structure. The structure of the sheet shutter curtain according to any one of claims 1 to 6,
A plurality of the openings of the seat body are formed,
A structure of a sheet shutter curtain, wherein the removable sheet is attached to each of the plurality of openings. The structure of the sheet shutter curtain according to any one of claims 1 to 7,
The structure of the sheet shutter curtain, wherein the removable sheet is composed of a plurality of divided removable sheets smaller than the area of the opening.

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