shutter

Abstract

To provide a shutter with improved crime prevention properties. [Solution] The shutter 10 is configured to appropriately cover an opening 12 of a building 11. The shutter 10 can be in a closed state in which it covers the opening 12, and an open state in which it does not cover the opening 12. The shutter 10 comprises a slat body 14 consisting of a plurality of slats 13, and an emergency locking section 20. The emergency locking section 20 is in an unlocked state during normal times, thereby allowing the slat body 14 to open. Furthermore, the emergency locking section 20 is configured to be in a locked state during an emergency, thereby restricting the opening of the slat body 14.

Description

[Technical field]

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

[0002] A shutter is a structure that is installed on the outside or inside of a window or entrance for the purposes of protection from the cold, fire protection, crime prevention, sun protection, etc. Generally, shutters are made of metal and shaped like blinds that can be rolled up. In recent years, various inventions have been made to improve the crime prevention properties of shutters (see the patent documents listed below). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent No. 3644937 [Patent Document 2] JP 2004-316289 A [Patent Document 3] Publication No. 2510900 [Patent Document 4] JP 2006-90043 A [Patent Document 5] Japanese Patent Application Publication No. 6-346669 [Patent Document 6] Japanese Utility Model Application Publication No. 57-93596 [Patent Document 7] Japanese Patent Application Publication No. 55-13354 Summary of the Invention [Problem to be solved by the invention]

[0004] However, there is room for improvement in the shutters according to the background art from the viewpoint of crime prevention.

[0005] Specifically, by providing shutters on windows, etc., a certain level of crime prevention can be ensured. However, intruders attempt to break into premises by using various tools to break into the shutters. Furthermore, the number of reported burglaries in Japan has been on the rise in recent years, and some of these burglaries break into premises by breaking into the shutters. It is difficult to say that existing shutters are sufficient to deal with such crimes.

[0006] The present invention has been made in consideration of such problems, and an object of the present invention is to provide a shutter with improved crime prevention capabilities. [Means for solving the problem]

[0007] A shutter according to an embodiment of the present invention is configured to appropriately cover an opening in a building, and can be in a closed state in which the opening is covered, and an open state in which the opening is not covered. The shutter comprises a slat body consisting of a plurality of slats, and an emergency locking section, the emergency locking section having a slat side locking section arranged on the side of the slat body, and an opening side locking section arranged on the side of the opening, the slat side locking section having a removable plate, the plate having a slat side return section formed on it, and the opening side locking section having an opening side return section formed on it, and in normal times, the slat side return section and the opening side return section do not engage, and in an emergency, the slat side return section and the opening side return section engage.

[0008] In addition, in the shutter according to an embodiment of the present invention, the emergency locking portion has an outer surface portion and an inner surface portion, and the plate is attached to the outer surface portion.

[0009] Furthermore, in a shutter according to an embodiment of the present invention, when the slat body is in a closed state, the end portion of the outer surface portion that is closest to the frame portion is positioned farther away from the frame portion than the end portion of the inner surface portion that is closest to the frame portion. Effect of the Invention

[0010] According to the shutter of the present invention, since the plate is formed with a slat side return portion, even if the shutter is pried open, the shutter can be reused simply by replacing the deformed plate. [Brief description of the drawings]

[0011] [Figure 1A] FIG. 4 is a front view showing a closed state of the shutter according to the embodiment of the present invention. [Figure 1B] FIG. 2 is a front view showing an open state of the shutter according to the embodiment of the present invention. [Figure 2A] FIG. 4 is a cross-sectional view showing a closed state of the shutter according to the embodiment of the present invention. [Figure 2B] FIG. 4 is a cross-sectional view showing an open state of the shutter according to the embodiment of the present invention. [Figure 3A] 1 is a cross-sectional view showing a situation in which an intrusion is attempted in a shutter according to an embodiment of the present invention; [Figure 3B] 1 is a cross-sectional view showing a situation in which an intrusion is attempted in a shutter according to an embodiment of the present invention; [Figure 3C] 1 is a cross-sectional view showing a situation in which an intrusion is attempted in a shutter according to an embodiment of the present invention; [Figure 4A] FIG. 11 is a cross-sectional view showing a state in which an intrusion is attempted in a shutter according to another embodiment of the present invention. [Figure 4B] FIG. 11 is a cross-sectional view showing a state in which an intrusion is attempted in a shutter according to another embodiment of the present invention. [Figure 4C] FIG. 11 is a cross-sectional view showing a state in which an intrusion is attempted in a shutter according to another embodiment of the present invention. [Figure 5A] 11 is a cross-sectional view showing a state in which the emergency locking section is unlocked in a shutter according to another embodiment of the present invention. FIG. [Figure 5B] 11 is a cross-sectional view showing a state in which the emergency locking section is unlocked in a shutter according to another embodiment of the present invention. FIG. [Figure 6A]FIG. 11 is a cross-sectional view showing the configuration of an emergency locking portion in a shutter according to still another embodiment of the present invention. [Figure 6B] FIG. 11 is a cross-sectional view showing the configuration of an emergency locking portion in a shutter according to still another embodiment of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0012] Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings. In the following description, the structure of the shutter 10 will be described using each direction, such as outside, inside, left and right, and up and down. Here, the outside refers to the outside of the building on which the shutter 10 is installed, with reference to FIG. 1. The inside refers to the opposite side of the outside. In the following description, the same members are generally given the same reference numerals, and repeated description will be omitted. Here, each member constituting the shutter 10 is made of, for example, metal such as iron or stainless steel, synthetic resin, or the like.

[0013] Fig. 1A is a front view showing a closed state of the shutter 10. Fig. 1B is a front view showing an open state of the shutter 10. Fig. 1B shows an intermediate stage of the opening operation of the shutter 10, that is, a half-open state.

[0014] 1A and 1B, a shutter 10 is configured to appropriately cover an opening 12 of a building 11. The shutter 10 includes a slat body 14 consisting of a plurality of slats 13, and an emergency lock portion 20.

[0015] The shutter 10 is a security device that is installed inside the frame 15 and appropriately opens or closes the opening 12 defined inside the frame 15. The shutter 10 can also be provided with a lock mechanism in the middle in the left-right direction, which is the opening and closing direction. By providing the lock mechanism, the user can close the shutter 10 and lock the lock mechanism, thereby preventing intrusion through the shutter 10.

[0016] Here, the shutter 10 employs a mechanism for opening and closing in the left-right direction, but a mechanism for moving in the up-down direction may also be employed. When the shutter 10 employs a mechanism for moving in the up-down direction, the emergency locking portion 20, which will be described later, is provided at the lower end of the slat body 14, and the rib 24, which will be described later, is provided at the lower side of the frame portion 15.

[0017] The slat body 14 is formed by connecting a plurality of slats 13 made of, for example, metal plates in a rotatable manner along the left-right direction. The slat body 14 is provided so as to be openable and closable along the left-right direction. The slat body 14 also has a winding section (not shown) at the left end. In the winding section, the slat 13 is wound into a substantially cylindrical shape and stored. The opening and closing operation of the slat body 14 may be manual or electric. In the case of the manual type, the user moves the slat body 14 to the right with his / her hand to close the slat body 14. In the case of the manual type, the user moves the slat body 14 to the left with his / her hand to open the slat body 14. On the other hand, in the case of the electric type, the slat body 14 is moved to the right and left by the driving force of a motor (not shown).

[0018] The shutter 10 can be in a closed state in which the slat body 14 covers the opening 12, and in an open state in which the slat body 14 does not cover the opening 12. By closing the opening 12 with the shutter 10, it is possible to prevent intruders from entering the building 11 through the opening 12, thereby improving crime prevention. By opening the opening 12 and not closing it with the shutter 10, it is possible to let in light and ventilation through the opening 12.

[0019] The emergency locking section 20 is a security device that does not impede the opening and closing of the shutter 10 in normal times, but does not allow the opening of the shutter 10 in an emergency when an intruder attempts to break in. The emergency locking section 20 is disposed on the right end slat 13 over almost the entire area of ​​the slat 13 in the vertical direction. In addition, a rib 24, which will be described later, is also formed over almost the entire area of ​​the side surface of the frame section 15 in the vertical direction.

[0020] Fig. 2A is a cross-sectional view showing the shutter 10 in a closed state. Fig. 2B is a cross-sectional view showing the shutter 10 in an intermediate stage of being in an open state. Figs. 2A and 2B are cross-sectional views taken along the line AA in Fig. 1. The same applies to the cross-sectional views of Fig. 3A and subsequent figures.

[0021] 2A, the shutter 10 is an indoor shutter disposed inside the window 16. Since the shutter 10 is an indoor shutter, the shutter 10 does not appear on the exterior of the building 11 when the window 16 is closed, thereby improving the aesthetic appearance of the building 11. Here, the shutter 10 may be a normal shutter disposed on the exterior of the window 16.

[0022] The shutter 10 of this embodiment has an emergency locking section 20. The emergency locking section 20 is a device that appropriately maintains the locked state of the shutter 10. As will be described later, in normal times as shown in Fig. 2A etc., the slat side locking section 21 and the opening side locking section 22 of the emergency locking section 20 do not engage. On the other hand, in an emergency as will be described later with reference to Fig. 3B etc., the slat side locking section 21 and the opening side locking section 22 of the emergency locking section 20 engage with each other.

[0023] Referring to FIG. 2A, the emergency locking portion 20 is disposed at the right end of the slat body 14, and is a portion that exerts a locking function only when an intruder attempts to intrude. Specifically, the shutter 10 has a slat side locking portion 21 and an opening side locking portion 22. The slat side locking portion 21 is the slat 13 disposed at the right end of the slat body 14. The opening side locking portion 22 is a portion that is disposed on the side of the frame portion 15. Here, in the normal state shown in FIG. 2A, the inner surface of the slat side return portion 231 is disposed outside the outer surface of the opening side return portion 232. With this configuration, when the slat body 14 is opened or closed, the slat side return portion 231 and the opening side return portion 232 are not inadvertently engaged or engaged with each other, and the emergency locking portion 20 does not hinder the opening or closing operation of the slat body 14.

[0024] Here, referring to Fig. 1A, the slat-side locking portion 21 is formed over almost the entire area of ​​the shutter 10 in the vertical direction. Also, referring to Fig. 1A, the opening-side locking portion 22 is formed over almost the entire area of ​​the frame portion 15 in the vertical direction. With this configuration, the entire area of ​​the right end portion of the slat body 14 in the vertical direction is protected by the emergency locking portion 20, and the anti-theft performance of the shutter 10 can be improved.

[0025] In normal times as shown in Fig. 2A etc., the emergency locking section 20 is in an unlocked state, thereby allowing the opening operation of the slat body 14. In addition, in an emergency, which will be described later with reference to Fig. 3A etc., the emergency locking section 20 is in a locked state, thereby restricting the opening operation of the slat body 14.

[0026] In this embodiment, at least one of the slat-side locking portion 21 and the opening-side locking portion 22 has a turned portion. As described later, the slat-side locking portion 21 is formed with a slat-side turned portion 231, and the opening-side locking portion 22 is formed with an opening-side turned portion 232.

[0027] Referring to FIG. 2B, the slat side locking part 21 has a substantially U-shaped cross section that opens toward the right. The internal space of the slat side locking part 21 is sized to accommodate the opening side locking part 22 described later with a margin. In particular, the internal space of the slat side locking part 21 is formed larger than the opening side locking part 22 in the outward / inward direction. This configuration can prevent the opening side return part 232 of the opening side locking part 22 and the slat side return part 231 of the slat side locking part 21 from fitting together unnecessarily in normal times. Furthermore, this configuration allows the relative positions of the slat side locking part 21 and the opening side locking part 22 to vary in an emergency in which an intruder attempts to enter the building 11, and allows the slat side return part 231 to fit together with the opening side return part 232.

[0028] The slat side locking part 21 is formed with a slat side return part 231. The slat side return part 231 is a return part formed near the right end of the outer surface part of the slat side locking part 21. The inner part, which is the left end part, of the slat side return part 231 protrudes inward. The outer surface of the slat side return part 231 is an inclined surface that slopes inward toward the left. With this configuration, as described below, the slat side return part 231 and the opening side return part 232 firmly engage with each other in an emergency.

[0029] The opening side locking part 22 is a part disposed on the left side surface of the frame part 15, and is a generally hook-shaped part that protrudes to the left. When the slat body 14 is in the closed state, the opening side locking part 22 is sized to be stored inside the slat side locking part 21. The opening side locking part 22 also has an opening side turned part 232. The opening side turned part 232 is a part formed by folding back the left end part of the opening side locking part 22, and is folded back to the right in a generally straight line.

[0030] The rib 24 is disposed in the opening 12 in the outer portion close to the emergency locking portion 20. Here, the rib 24 is disposed on the left side surface of the frame portion 15, near the outside of the emergency locking portion 20. The rib 24 is disposed on the outer surface of the slat side locking portion 21 when the shutter 10 is in the closed state. The rib 24 is a rod-shaped member made of a metal such as stainless steel and having a substantially rectangular cross section. As will be described later, by providing the rib 24, a rod-shaped member such as a crowbar 25 is required when prying open the slat body 14, and the pressing force of the crowbar 25 can be used to lock the emergency locking portion 20.

[0031] 3A, 3B and 3C are cross-sectional views showing successive situations where an intrusion is attempted.

[0032] Referring to FIG. 3A, when an intruder attempts to invade the building 11 through the opening 12, the intruder first uses a tool such as a crowbar 25 to smash and destroy the window 16.

[0033] Referring to FIG. 3B, the intruder then inserts the sharp end of the crowbar 25 between the slat side locking portion 21 and the rib 24 and attempts to pry open the slat body 14.

[0034] 3C, when an intruder inserts the tip of the crowbar 25 between the rib 24 and the slat-side locking part 21 and tries to pry open the building 11 by rotating the crowbar 25 clockwise, a force acts to bend the outer surface of the slat-side locking part 21 inward. As a result, the outer surface of the slat-side locking part 21 bends inward.

[0035] As a result, the slat side return portion 231 of the slat side locking portion 21 and the opening side return portion 232 of the opening side locking portion 22 are engaged. This causes the emergency locking portion 20 to be in a locked state. Therefore, even if an intruder attempts to open the shutter 10 by moving the slat body 14 to the left, the intruder cannot move the slat 13 to the left side because the emergency locking portion 20 is in a locked state. In addition, the engagement structure of the emergency locking portion 20 cannot be seen from the outside. Therefore, the intruder will give up on opening the shutter 10 and entering the building 11 through the opening 12. This improves the crime prevention of the shutter 10.

[0036] That is, in normal times, the shutter 10 can be freely opened according to the user's request. On the other hand, in an emergency in which an intruder attempts to forcefully open the shutter 10, the emergency locking section 20 is in a locked state, preventing the slat body 14 from opening. This prevents an intruder from entering the building through the opening 12.

[0037] 4A, 4B, and 4C are cross-sectional views sequentially showing a situation in which an intrusion is attempted in the shutter 10 according to another embodiment.

[0038] The basic configuration of the shutter 10 shown in Fig. 4A etc. is the same as that shown in Fig. 2A etc., except that at least one of the slat side locking part 21 and the opening side locking part 22 is configured to be removable in an emergency. By being able to remove the slat side locking part 21 or the opening side locking part 22 in an emergency, the user can open the slat body 14 and enter and exit through the opening 12 even in an emergency.

[0039] 4A, a plate 26 is provided on the inside of the outer side surface of the slat side locking part 21. Specifically, the slat side locking part 21 has a cross section that is substantially U-shaped as described above, and has an outer side surface part 211 and an inner side surface part 212. The outer side surface part 211 is a side surface formed on the outside of the slat side locking part 21. The inner side surface part 212 is a side surface formed on the inside of the slat side locking part 21.

[0040] The plate 26 is a generally plate-shaped member that extends over the entire area of ​​the shutter 10 in the up-down direction. The plate 26 is a generally plate-shaped member and has a slat side return portion 231. That is, here, the slat side return portion 231 is not formed on the main body of the slat side locking portion 21, but is formed on the plate 26, which is a separate member. The plate 26 protrudes inward from the right end of the slat side return portion 231, and further protrudes sharply downward inward.

[0041] The plate 26 is fixed from the inside to the outer side surface portion 211 of the slat side locking portion 21. The plate 26 is fixed to the outer side surface portion 211 by fastening with a bolt 27 which will be described later.

[0042] Also, the right end of the plate 26 is disposed to the right of the right end of the outer surface portion 211 of the slat-side locking portion 21. That is, in the left-right direction, the outer surface portion 211 is shorter than the inner surface portion 212. In this way, when an intruder tries to pry open the shutter 10 using the crowbar 25, only the plate 26 bends, and it is possible to prevent the outer surface portion 211 of the slat-side locking portion 21 from bending. As a result, when an intrusion attempt occurs, it can be dealt with simply by replacing the plate 26, and the maintenance costs of the shutter 10 can be reduced.

[0043] When the shutter 10 is in the closed state, the right side end of the outer surface portion 211 of the slat side locking portion 21 may be located to the left of the left end of the rib 24. In this manner, when the crowbar 25 penetrates, the crowbar 25 is prevented from contacting the outer surface portion 211 of the slat side locking portion 21, and bending or damage to the outer surface portion of the slat side locking portion 21 can be prevented.

[0044] The plate 26 is attached to the outer surface 211 of the slat side locking part 21 by a bolt 27. That is, through holes are formed in the outer surface 211 and inner surface 212 of the slat side locking part 21 and the plate 26, and the bolt 27 passes through these through holes and is fastened to the plate 26 and the slat side locking part 21. The head of the bolt 27 is disposed on the inner part of the slat side locking part 21. Therefore, the installation and removal of the bolt 27 can be performed only from inside the building 11, and cannot be performed from outside the building 11.

[0045] Here, a key structure can be added to the bolt 27. This allows only users who have the key to rotate the bolt 27, further improving security. In addition, if the bolt 27 has a key structure, the bolt 27 can be configured to be operated from outside the building 11.

[0046] Further, referring to FIG. 4A, when an intruder attempts to enter the building 11 through the opening 12, the intruder first uses a tool such as a crowbar 25 to smash and destroy the window 16.

[0047] Referring to FIG. 4B, an intruder inserts the sharp end of a crowbar 25 between the slat side locking portion 21 and the rib 24 and attempts to pry open the slat body 14.

[0048] 4C, when an intruder inserts the tip of the crowbar 25 between the rib 24 and the slat-side locking part 21 and tries to pry open the building 11 by rotating the crowbar 25 clockwise, the plate 26 bends inward. At this time, the outer surface part 211 of the slat-side locking part 21 does not deform because no large force from the crowbar acts on the outer surface part 211 of the slat-side locking part 21.

[0049] As a result, the slat side return portion 231 of the plate 26 and the opening side return portion 232 of the opening side lock portion 22 are engaged with each other. This causes the emergency lock portion 20 to enter a locked state. Therefore, even if an intruder attempts to open the shutter 10 by moving the slat body 14 to the left, the intruder cannot move the slat 13 to the left because the emergency lock portion 20 is in the locked state. Furthermore, since the bolt 27 cannot be operated from outside the building 11, an intruder present outside the building 11 cannot operate the bolt 27 to remove the plate 26. This causes the intruder to give up on entering the building 11.

[0050] Fig. 5A is a cross-sectional view showing a state in which the emergency locking unit 20 is unlocked in the shutter 10 according to another embodiment. Fig. 5B is a cross-sectional view showing a state in which the emergency locking unit is unlocked in the shutter 10 according to another embodiment.

[0051] 5A, the user who owns the building 11 pulls out the bolt 27 from inside the building 11, for example by rotating it. Then, the fastening between the outer surface portion 211 of the slat side locking portion 21 and the plate 26 is released, and the slat side locking portion 21 and the slat body 14 can be moved.

[0052] 5B, when the user applies force to the slat body 14 toward the left side, the slat body 14 and the slat side locking part 21 move toward the left, and the shutter 10 opens. After that, the user removes the plate 26 that is engaged with the opening side return part 232, and uses the bolt 27 to attach a new plate 26 to the outer surface part 211 of the slat side locking part 21. As described above, the outer surface part 211 of the slat side locking part 21 does not deform because no large force is applied from the crowbar 25. Therefore, even if an intruder attempts to break in, the user can deal with it by simply replacing the plate 26.

[0053] The configuration of the shutter 10 according to still another embodiment will be described with reference to Figures 6A and 6B. The configuration of the shutter 10 shown in Figures 6A and 6B is similar to that described with reference to Figure 2A etc., except that it has a slat side return portion 234 and an opening side return portion 233. This configuration can be applied to all of the embodiments described above.

[0054] 6A, a slat side return portion 234 is formed at the left end portion of the slat side return portion 231. The slat side return portion 234 is a portion where the left end portion of the slat side return portion 231 protrudes outward.

[0055] The opening side locking portion 22 is formed with an opening side return portion 233. The opening side return portion 233 is a portion formed by protruding the right side end portion of the opening side return portion 232 inward. When the slat body 14 is opened or closed in normal operation, the slat side return portions 231 and 224 do not engage with the opening side return portion 232 and the opening side return portion 233. This allows the user to open and close the slat body 14 smoothly.

[0056] 6B, if an intruder attempts to break in using the crowbar 25 described above, the slat side locking part 21 moves inward and to the left, and the slat side return part 234 of the slat side return part 231 fits into the opening side return part 233 of the opening side return part 232. The presence of the opening side return part 233 and the slat side return part 234 further strengthens the fit between the opening side locking part 22 and the slat side locking part 21, and the security of the shutter 10 can be further improved.

[0057] Although the embodiment of the present invention has been described above, the present invention is not limited to this embodiment, and modifications can be made without departing from the scope of the present invention. In addition, the above-described embodiments can be combined with each other.

[0058] The invention that can be understood from the above-described embodiment will be described below together with its effects.

[0059] The shutter according to the embodiment of the present invention is configured to cover an opening of a building appropriately, and can be in a closed state that covers the opening and an open state that does not cover the opening. The shutter comprises a slat body composed of a plurality of slats and an emergency locking unit, and the emergency locking unit is configured to allow the opening operation of the slat body by being in an unlocked state in normal times, and to restrict the opening operation of the slat body by being in a locked state in emergency times. According to the shutter of the present invention, the shutter can be freely opened according to the user's request in normal times. On the other hand, in an emergency in which an intruder tries to forcefully open the shutter, the emergency locking unit is in a locked state, and the slat body cannot be opened. Therefore, it is possible to prevent an intruder from entering the building through the opening.

[0060] In addition, in a shutter according to an embodiment of the present invention, the emergency locking portion has a slat-side locking portion disposed on the side of the slat body and an opening-side locking portion disposed on the side of the opening, and in normal times, the slat-side locking portion and the opening-side locking portion do not engage with each other, and in an emergency, the slat-side locking portion and the opening-side locking portion engage with each other. According to the shutter of the present invention, in an emergency, the slat-side locking portion and the opening-side locking portion engage with each other, thereby reliably preventing an intruder from opening the slat body.

[0061] In the shutter according to the embodiment of the present invention, at least one of the slat-side locking portion and the opening-side locking portion has a return portion. According to the shutter of the present invention, the return portion fits to strengthen the engagement between the slat-side locking portion and the opening-side locking portion in an emergency, and more firmly prevents an intruder from opening the slat body.

[0062] In addition, in the shutter according to the embodiment of the present invention, at least one of the slat side locking part and the opening side locking part is configured to be removable in an emergency. According to the shutter of the present invention, since the slat side locking part or the opening side locking part can be removed in an emergency, a user can open the slat body and enter or exit through the opening even in an emergency.

[0063] In addition, in the shutter according to the embodiment of the present invention, the removal is performed from inside the building. According to the shutter of the present invention, the removal is performed from inside the building, which makes it possible to prevent an intruder from removing the shutter.

[0064] Furthermore, the shutter according to the embodiment of the present invention is characterized in that a rib is provided at the opening of the outer portion close to the emergency locking portion. By providing the rib, the shutter of the present invention requires a rod-shaped member such as a crowbar to pry open the slat body, and the pressing force of the crowbar can be used to lock the emergency locking portion.

[0065] In addition, in the shutter according to the embodiment of the present invention, the slat-side locking portion and the opening-side locking portion each have a return portion. According to the shutter of the present invention, by forming a return portion on both the slat-side locking portion and the opening-side locking portion, it is possible to strengthen the engagement between the slat-side locking portion and the opening-side locking portion in an emergency.

[0066] In addition, in the shutter according to the embodiment of the present invention, the slat-side locking portion and the opening-side locking portion each have a turned-up portion formed therein. According to the shutter of the present invention, in an emergency, the turned-up portions fit together, thereby further strengthening the fit between the slat-side locking portion and the opening-side locking portion.

[0067] In addition, in the shutter according to the embodiment of the present invention, the slat-side locking part has a removable plate, a slat-side turned part is formed on the plate, and an opening-side turned part is formed on the opening-side locking part, and in normal times, the slat-side turned part and the opening-side turned part do not engage, and in emergency times, the slat-side turned part and the opening-side turned part engage. According to the shutter of the present invention, since the slat-side turned part is formed on the plate, even if the shutter is pried open, the shutter can be reused by simply replacing the deformed plate.

[0068] In addition, in the shutter according to the embodiment of the present invention, the emergency locking portion has an outer surface portion and an inner surface portion, and the plate is attached to the outer surface portion. According to the shutter of the present invention, by attaching the plate to the outer surface portion, only the plate can be deformed when entering, and deformation of the main body of the slat-side locking portion can be suppressed.

[0069] In addition, in the shutter according to the embodiment of the present invention, when the slat body is in a closed state, the end of the outer side surface portion that is close to the frame portion is disposed farther away from the frame portion than the end of the inner side surface portion that is close to the frame portion. According to the shutter of the present invention, since the outer side surface portion is short, deformation of the outer side surface portion can be suppressed when the shutter is pried open. [Explanation of symbols]

[0070] 10. Shutter 11 Buildings 12 Opening 13 Slat 14 Slat body 15 Frame section 16. Windows 20 Emergency lock section 21 Slat side locking part 211 External surface part 212 Inner side 22 Opening side lock 231 Slat side return part 232 Opening side return part 233 Opening side return area 234 Slat side return part 24 Ribs 25 bar 26 Plate 27 Volts

Claims

1. It is configured to appropriately cover the opening of the building, The opening can be covered in a closed state and the opening can be uncovered in an open state. A slat body consisting of a plurality of slats; and an emergency lock unit, The emergency locking portion has a slat side locking portion disposed on the side of the slat body and an opening side locking portion disposed on the side of the opening, The slat side locking portion has a removable plate, The plate is formed with a slat side return portion, The opening side locking portion is formed with an opening side return portion, In normal times, the slat side return portion and the opening side return portion are not engaged with each other, A shutter characterized in that, in an emergency, the slat side turned-up portion and the opening side turned-up portion engage with each other.

2. The emergency lock portion has an outer surface portion and an inner surface portion, 2. The shutter of claim 1, wherein the plate is attached to the outer surface.

3. In the closed state of the slat body, The shutter according to claim 2, wherein an end portion of the outer surface portion approaching the frame portion is positioned farther away from the frame portion than an end portion of the inner surface portion approaching the frame portion.

Images