Shutter device

Abstract

To facilitate entry from the outside in emergency situations. [Solution] The system comprises a frame 10, a shutter curtain 21 slidably disposed on the frame 10 and having a base plate 22 at its tip, and a locking device 1 provided on the base plate 22 and the frame 10, which prevents the shutter curtain 21 from moving to the open position when the shutter curtain 21 is locked in the closed position. The frame 10 is provided with an outdoor operating unit 60 that can be operated from the outside to unlock the locking device 1.

Description

Technical Field

[0001] The present invention relates to a shutter device, and more particularly to a shutter device provided on the outdoor side of a fitting provided at an opening of a building.

Background Art

[0002] Some buildings such as houses and buildings have a shutter device provided on the outdoor side of a fitting provided at an opening. The shutter device is stored, for example, with a shutter curtain wound up at the upper part of a frame body, and the opening can be closed by pulling the shutter curtain downward. This type of shutter device is provided with a locking device so that the shutter curtain does not accidentally open. The locking device prevents the shutter curtain from moving to the open position by locking it in a state where the shutter curtain is disposed at the closed position (see, for example, Patent Document 1).

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] By the way, in a relatively tall building, in an emergency such as a fire, a situation may occur where people enter the room from an opening at a high place. At this time, when the shutter device provided at the opening is disposed at the closed position and the locking device is in the locked state, it is necessary to take measures such as destroying the shutter curtain, and there is a risk that it will take a long time to enter from the opening.

[0005] In view of the above situation, an object of the present invention is to provide a shutter device that can facilitate entry from the outdoor side in an emergency. [Means for solving the problem]

[0006] To achieve the above objective, the shutter device according to the present invention comprises a frame, a shutter curtain slidably disposed on the frame and having a door-edge plate at its tip, and a locking device provided on the door-edge plate and the frame, which prevents the shutter curtain from moving to the open position when the shutter curtain is locked in the closed position, and the frame is provided with an outdoor operating section for unlocking the locking device at a position that can be operated from the outside. [Effects of the Invention]

[0007] According to the present invention, since an outdoor operating unit that can be operated from the outside is provided on the frame, in an emergency the shutter curtain can be opened by operating the outdoor operating unit, making it easy to enter from the outside. [Brief explanation of the drawing]

[0008] [Figure 1] This is a view from the outside of a building fixture equipped with a shutter device according to an embodiment of the present invention, showing the shutter curtain in the closed position. [Figure 2] Figure 1 is a vertical cross-sectional view of the joinery shown. [Figure 3] Figure 1 is an enlarged vertical cross-sectional view of the main part of the joinery shown. [Figure 4] Figure 1 is an enlarged vertical cross-sectional view of the main part of the joinery shown, with the shutter curtain moved towards the open position. [Figure 5] Figure 1 is a perspective view of the main parts of the joinery shown, viewed from the outside. [Figure 6] Figure 1 is a perspective view of the lower frame portion of the door / window shown, taken from the outside. [Figure 7] Figure 1 is a perspective view of the door panel portion of the shutter device shown in Figure 1, as seen from the inside. [Figure 8]Figure 1 is a perspective view from the outside of the unit case and unlocking trigger of the hook unit that constitutes the locking mechanism of the shutter device shown in Figure 1. [Figure 9] Figure 1 is a cross-sectional perspective view of the hook unit of the locking device attached to the door edge plate of the shutter device, as seen from the inside. [Figure 10] Figure 9 shows a fractured section on the exterior side, with the locking device's hook unit viewed from the interior side. [Figure 11] Figure 10 shows a fracture further outwards than the exterior, and this is a fractured perspective view of the locking device's hook unit as seen from the interior. [Figure 12] Figure 9 shows the main part of the hook unit as viewed from the inside, with (a) showing the hook member in the unlocked position and (b) showing the hook member in the locked position. [Figure 13] Figure 9 shows the main part of the hook unit as viewed from the inside. (a) shows the state in which the hook member and the engaging member are engaged, and (b) shows the state immediately after the engaging member moves upward and the engagement with the hook member is released. [Figure 14] Figure 1 shows the lower frame portion of the door / window unit as viewed from the outside, with the bracket cover removed. [Figure 15] Figure 1 shows the operation of the outdoor operating unit applied to the locking mechanism of the shutter device. (a) is a vertical cross-sectional view seen from the indoor side with the sliding member of the outdoor operating unit in the retracted position, and (b) is a vertical cross-sectional view seen from the indoor side with the sliding member of the outdoor operating unit in the working position. [Modes for carrying out the invention]

[0009] Hereinafter, preferred embodiments of the shutter device according to the present invention will be described in detail with reference to the attached drawings. For convenience, the terms "depth direction" and "face direction" may be used in the following description. The depth direction is the direction along the depth of the shutter device, as indicated by arrow A in the figure. The surface along the depth direction may be referred to as the depth surface. The face direction is the direction along the vertical direction perpendicular to the depth direction, in the case of a lower frame or the like that which extends horizontally. In the case of a device that extends vertically, the face direction is the direction along the horizontal direction perpendicular to the depth direction. The surface along the face direction may be referred to as the face surface.

[0010] Figures 1 to 7 show a building fixture equipped with a shutter device, which is an embodiment of the present invention. The building fixture illustrated here is installed in an opening in the building structure, which is also used as an emergency access opening set up at a height of three floors or higher in a house or office building. In this embodiment, although not explicitly shown in the figures, a building fixture called a sliding window is illustrated, in which an exterior sash and an interior sash are arranged on a frame 10 so as to be slidable from left to right. The frame 10 is constructed by assembling an upper frame 11, a lower frame (door edge frame) 12, and left and right vertical frames (guide frames) 13 around the perimeter. The upper frame 11, lower frame 12, and left and right vertical frames 13 are composed of exterior metal frame parts 11M, 12M, 13M and interior resin frame parts 11P, 12P, 13P. As is clear from the figures, the lower frame 12 and vertical frames 13 are configured to have a larger dimension in the depth direction than the upper frame 11. The vertical frame 13 is provided with slat guides 13a along the top and bottom of the portion that protrudes further outward than the upper frame 11, and the lower frame 12 is provided with a shutter receiving portion 12a in the portion located further outward than the upper frame 11.

[0011] In the above-mentioned frame body 10, a shutter box 20 is provided at the upper part of the upper frame 11, and a shutter curtain 21 is disposed inside the shutter box 20. The shutter box 20 is composed of a bottom plate 20a, a back plate 20b, two side plates 20c, an upper plate 20d, and a front plate 20e. The shutter box 20 is provided with a shutter opening 20f on the lower surface corresponding to the slat guide 13a of the vertical frame 13. The shutter curtain 21 is composed of a plurality of slats 21a connected to each other. A seat plate (door end plate) 22 is provided at the tip of the shutter curtain 21. The slat 21a is, for example, a horizontally long thin plate member formed of metal and has a length extending between the vertical frames 13. These slats 21a are connected so as to be relatively rotatable about an axis along the left and right, and are accommodated in a wound-up state inside the shutter box 20. The seat plate 22 has a seat plate body 22a, an outer cover plate portion 22b, and a support plate portion 22c. The seat plate body 22a is formed in a hollow shape such that the inner surface on the inner peripheral side is flat. The outer cover plate portion 22b is formed of a thin plate protruding from the tip of the outer peripheral side of the seat plate body 22a toward the tip side. The support plate portion 22c extends so as to protrude in a direction perpendicular to the inner surface of the seat plate body 22a and then curve toward the tip side.

[0012] The above-mentioned fitting includes a pin member 30 provided in the shutter receiving portion 12a of the lower frame 12 and a hook unit 40 provided in the seat plate 22, and a locking device 1 is constituted. The pin member 30 is formed in a columnar shape extending along the expected direction, and is fixed to the upper surface of the shutter receiving portion 12a via a pin bracket 31. The pin bracket 31 and the pin member 30 slide the shutter curtain 21 pulled out from the shutter opening 20f downward along the slat guide 13a, and when the seat plate 22 is disposed close to the shutter receiving portion 12a (closed position of the shutter curtain 21), it is disposed at a position accommodated between the seat plate body 22a and the portion located at the tip side of the support plate portion 22c.

[0013] The hook unit 40 is attached to the support plate portion 22c of the seat plate 22 via the unit case 41. As shown in Figures 8 to 13, the unit case 41 is composed of a case base portion 41a, a side plate portion 41b, a mounting plate portion 41c, a bottom plate portion 41d, and a guide plate portion 41e. The case base portion 41a is a rectangular flat plate. Guide holes 41f, which are elongated holes along the top and bottom, are provided in this case base portion 41a. The side plate portions 41b extend inward from both side edges of the case base portion 41a. The mounting plate portions 41c extend in a direction away from each other from the lower edges of each side plate portion 41b. The bottom plate portion 41d extends inward from the lower edge of the case base portion 41a. The lower surface of the bottom plate portion 41d is formed to be on the same plane as the lower surface of the mounting plate portion 41c. The guide plate portion 41e extends downward from the indoor side edge of the lower plate portion 41d. A pin insertion groove 41g is provided in this guide plate portion 41e. The pin insertion groove 41g extends vertically and has a width that allows the pin member 30 to be inserted, and opens at the lower edge of the guide plate portion 41e.

[0014] The unit case 41 is attached to the base plate 22 by screwing screw members N1 into each mounting plate portion 41c from the lower surface of the support plate portion 22c, with the case base portion 41a in contact with the surface of the base plate body 22a facing the interior, and the mounting plate portion 41c and lower plate portion 41d in contact with the upper surface of the support plate portion 22c. The guide plate portion 41e of the unit case 41 penetrates the support plate portion 22c through a notch 22d provided in the support plate portion 22c. The position in which the unit case 41 is attached is such that when the shutter curtain 21 pulled out from the shutter opening 20f is slid downward along the slat guide 13a and the base plate 22 is positioned close to the shutter receiving portion 12a, the pin member 30 can be inserted into the pin insertion groove 41g. The unit case 41 is equipped with an unlocking trigger (engaging member) 42 and a hook member 43.

[0015] The unlocking trigger 42 has a trigger substrate 42a, an operation input plate portion 42b, and an input plate portion 42c. The trigger substrate 42a is in the form of a flat plate disposed between the side plates 20c. The trigger substrate 42a is provided with a guide pin 42d and an engaging projection 42e. The guide pin 42d projects outward from a portion corresponding to the guide hole 41f of the case substrate portion 41a. The engaging projection 42e is in the form of a flat plate and projects inward from a position approximately at the center of the trigger substrate 42a. The operation input plate portion 42b extends substantially horizontally inward from the upper edge of the trigger substrate 42a. The input plate portion 42c is in the form of a flat plate narrower in width than the trigger substrate 42a and extends downward from the lower end portion of the trigger substrate 42a. A contact shaft portion 42f in the form of a cylinder projects inward from the input plate portion 42c. The unlocking trigger 42 is disposed so that the trigger substrate 42a overlaps the case substrate portion 41a with the guide pin 42d penetrating the guide hole 41f, and is movable up and down along the surface of the case substrate portion 41a with the input plate portion 42c penetrating the support plate portion 22c through the notch 22d.

[0016] The hook member 43 has a first plate portion 43a, a second plate portion 43b, a third plate portion 43c, and a spring engaging piece 43d. The first plate portion 43a extends vertically along the indoor surface of the guide plate portion 41e. The second plate portion 43b extends outward from the upper edge of the first plate portion 43a along the upper surface of the lower plate portion 41d. The third plate portion 43c extends upward from the outdoor edge of the second plate portion 43b along the indoor surface of the trigger substrate 42a. The spring engaging piece 43d protrudes inward from the third plate portion 43c. This hook member 43 is rotatably disposed on the guide plate portion 41e via a hook shaft portion 43e provided on the first plate portion 43a along the depth direction. In the illustrated example, the hook shaft portion 43e is provided in a portion to the right of the pin insertion groove 41g when viewed from the indoor side. Although not explicitly shown in the diagram, the hook member 43 has a spring member (biasing member) 44 between the spring engaging piece 43d and the operating input plate portion 42b of the unlocking trigger 42. This spring member 44 maintains the unlocked position by biasing the hook member 43 counterclockwise when viewed from the inside relative to the unit case 41, and maintains the stopper position by biasing the unlocking trigger 42 downward. The unlocked position of the hook member 43 is when the second plate portion 43b is positioned along the upper surface of the lower plate portion 41d. At this time, the engaging projection 42e provided on the unlocking trigger 42 is in contact with the upper surface of the third plate portion 43c. Therefore, if an external force is applied to rotate the hook member 43 clockwise when viewed from the outside relative to this state, the hook member 43 can rotate in the same direction. The stopper position of the unlocking trigger 42 is when the lower surface of the trigger base plate 42a is in contact with the lower plate portion 41d of the unit case 41.

[0017] As is clear from Figure 12, the first plate portion 43a of the hook member 43 is provided with a hook groove 43f. The hook groove 43f is a notch of a width that allows the pin member 30 to be inserted. As shown in Figure 12(a), the hook groove 43f is formed such that when the hook member 43 is in the unlocked position, its opening end aligns with the pin insertion groove 41g and extends diagonally upward toward the hook shaft portion 43e. In other words, the hook groove 43f of the hook member 43 in the unlocked position extends diagonally toward the pin insertion groove 41g, with the upper groove edge 43f1 extending across the lower part of the pin insertion groove 41g, and the lower groove edge 43f2 extending diagonally upward from the position that allows the insertion of the pin member 30 into the pin insertion groove 41g.

[0018] From the state described above, when the hook member 43 rotates clockwise as viewed from the outside, against the spring force of the spring member 44, as shown in Figure 12(b), the upper groove edge 43f1 gradually moves above the pin insertion groove 41g, and the lower groove edge 43f2 moves to gradually close the open end of the pin insertion groove 41g, finally reaching a position where the open end of the pin insertion groove 41g is closed (the locked position of the hook member 43). During this time, the engaging projection 42e of the unlocking trigger 42 slides against the upper surface of the third plate portion 43c as the hook member 43 rotates, and eventually, when the third plate portion 43c has passed, it moves downward together with the unlocking trigger 42 due to the spring force of the spring member 44. As a result, as shown in Figure 13(a), when viewed from the inside, the engaging projection 42e comes into contact with the left side surface of the third plate portion 43c, preventing the hook member 43 from rotating counterclockwise. In other words, when the hook member 43 is rotated clockwise from the unlocked position, the engaging projection 42e comes into contact with the pin insertion groove 41g when it is closed, thereby maintaining the hook member 43 in the locked position.

[0019] From the state in which the hook member 43 is maintained in the locked position, as shown in Figure 13(b), when the unlocking trigger 42 is moved upward relative to the unit case 41 against the spring force of the spring member 44, the contact between the engaging projection 42e and the hook member 43 is released, and the spring force of the spring member 44 causes the hook member 43 to rotate counterclockwise and is maintained in the unlocked position.

[0020] As shown in Figures 7 and 9, the locking device 1 described above is provided with an indoor operating unit 50 on the hook unit 40. The indoor operating unit 50 is used to move the unlocking trigger 42 upward relative to the unit case 41 by operation from the inside. In the illustrated example, the indoor operating unit 50 is configured with an unlocking rod 51 and a rod operating unit 52. The unlocking rod 51 is cylindrical and is arranged along the left-right direction between the upper end of the side plate 20c provided on the unit case 41 and the lower surface of the operation input plate portion 42b provided on the unlocking trigger 42. The rod operating unit 52 is rotatably mounted on a support shaft portion 22e provided on the base plate body 22a, which is oriented along the left-right direction, and is provided on both sides of the unit case 41. The tip of the unlocking rod 51 is supported by the rod operating unit 52 at a portion that is on the indoor side of the support shaft portion 22e. In the indoor operating unit 50 having the above configuration, when the rod operating unit 52 is rotated upward from the indoor side, the unlocking rod 51 moves upward relative to the unit case 41. As a result, the unlocking trigger 42 moves upward relative to the unit case 41, and the engaging projection 42e moves upward, so if the hook member 43 is in the locked position, the biasing force of the spring member 44 makes it possible to return the hook member 43 to the unlocked position. Reference numeral 45 in Figure 7 indicates a case cover that covers the unit case 41 from the indoor side.

[0021] In a door or window equipped with the aforementioned locking device 1, when the shutter curtain 21 pulled out from the shutter opening 20f is slid downward along the slat guide 13a and the base plate 22 is positioned close to the shutter receiving portion 12a, the locking device 1 is locked, preventing the shutter curtain 21 from moving upward. That is, when the base plate 22 approaches the shutter receiving portion 12a, the pin member 30 is inserted into the pin insertion groove 41g, causing the hook member 43 to rotate via the upper groove edge 43f1, and then the hook member 43 is maintained in the locked position. In this state, the engagement between the hook member 43 and the pin member 30 is maintained, preventing the base plate 22 from moving upward, thus preventing the shutter curtain 21 from opening unintentionally, even in relatively strong winds and rain.

[0022] From the state described above, if the rod operating part 52 is moved upward inside the room, the hook member 43 returns to the unlocked position, and the shutter curtain 21 can then be moved upward to open the opening.

[0023] On the other hand, as shown in Figures 1 to 6 and Figure 14, the locking device 1 described above is provided with an outdoor operating unit 60 on the lower frame 12. The outdoor operating unit 60 is for unlocking the lock from the outside in emergencies such as a fire. In the illustrated example, the outdoor operating unit 60 is constructed by slidably arranging a sliding member 61 on a pin bracket 31 provided on the shutter receiving portion 12a.

[0024] The sliding member 61 is arranged to slide left and right along the surface of the pin bracket 31 that is located on the outdoor side. More specifically, the sliding member 61 has a flat plate-shaped operating plate portion 61a arranged vertically and an operating plate portion 61b that extends from the operating plate portion 61a toward the outside. Two guide rods 61c on the left and right of the operating plate portion 61a are inserted into the guide grooves 31a of the pin bracket 31, thereby enabling the sliding member 61 to slide only in the left-right direction. The amount of slide of the sliding member 61 is set so that, when viewed from the indoor side with the hook member 43 engaged with the pin member 30, the operating plate portion 61a moves between a retracted position where it is retracted to the left relative to the input plate portion 42c of the unlocking trigger 42 and an operating position where it is located below the input plate portion 42c. The position of the operating plate portion 61a in the projection direction is set so that it can come into contact with the circumferential surface of the contact shaft portion 42f provided on the unlocking trigger 42 when the slide member 61 is positioned in the operating position.

[0025] An operating surface 61d is formed at the upper end of the operating plate portion 61a. As shown in Figure 15, the operating surface 61d is inclined to gradually rise upward toward the left when viewed from the interior side. The lowest height of the operating surface 61d is set to be below the contact shaft portion 42f when the hook member 43 is engaged with the pin member 30. The highest position of the operating surface 61d is set to a dimension that allows the unlocking trigger 42 to move upward by contacting the contact shaft portion 42f, thereby releasing the engagement between the engaging projection 42e and the hook member 43.

[0026] The operating plate portion 61b of the slide member 61 is bent to follow the upper surface of the lower frame 12, and then protrudes outward from the exterior-facing surface of the lower frame 12 in a nearly horizontal position. Furthermore, the edge on the right side when viewed from the interior side of the portion protruding from the lower frame 12 is bent upward. Reference numeral 62 in Figure 14 indicates a latch mechanism provided between the end of the operating plate portion 61a and the pin bracket 31. This latch mechanism 62 engages when the slide member 61 is in the retracted position, preventing the slide member 61 from moving unintentionally to the operating position, while releasing when an operating force is applied via the operating plate portion 61b, allowing the slide member 61 to move to the operating position. More specifically, it comprises an engaging piece 62a provided on the slide member 61 and an engaging spring 62b provided on the pin bracket 31, and is configured such that when the slide member 61 is in the retracted position, the projection of the engaging spring 62b engages with the groove of the engaging piece 62a. Furthermore, reference numeral 63 in Figure 15 indicates a bracket cover that covers the portion of the sliding member 61a that slides and the latch mechanism 62 from the outside of the pin bracket 31.

[0027] With the door and window configured as described above, even when the locking device 1 is locked, the operating plate portion 61b protrudes outward from the lower frame 12, and by operating the operating plate portion 61b, the sliding member 61 can be slid relative to the lower frame 12. Therefore, in emergencies such as fire, the locking device 1 can be unlocked by operating the sliding member 61 from the outside, allowing the shutter curtain 21 to be opened in a short time and entry into the room to proceed.

[0028] Furthermore, the sliding member 61 can only be operated from the outside, and the latch mechanism 62 described above prevents it from being unintentionally placed in the operating position. Therefore, during normal use, the sliding member 61 is maintained in the retracted position, and there is no risk of the contact shaft portion 42f and the operating plate portion 61a colliding when moving the shutter curtain 21 to the closed position. In addition, since there is no need to process the base plate 22 to open it to the outside, it is also advantageous in terms of fire resistance.

[0029] In the embodiments described above, a shutter device in which the shutter curtain moves up and down is illustrated, but the direction of movement of the shutter curtain is not necessarily limited to up and down; it may also slide left and right. Furthermore, while a device comprising a metal frame and a resin frame is illustrated as an example, the device is not necessarily limited to this.

[0030] As described above, the shutter device according to the present invention comprises a frame, a shutter curtain slidably disposed on the frame and having a door-edge plate at its tip, and a locking device provided on the door-edge plate and the frame, which prevents the shutter curtain from moving to the open position when the shutter curtain is locked in the closed position, and the frame is provided with an outdoor operating section for unlocking the locking device at a position that can be operated from the outside. According to this invention, since an outdoor operating unit that can be operated from the outside is provided on the frame, in an emergency the shutter curtain can be opened by operating the outdoor operating unit, making it easy to enter from the outside.

[0031] Furthermore, the present invention is characterized in that, in the shutter device described above, the frame body comprises two guide frames disposed on both side edges of the shutter curtain and guiding the sliding of the shutter curtain, and a door frame provided between the ends of the guide frames and arranged side by side on the door plate when the shutter curtain is in the closed position, and the outdoor operating unit is slidably disposed along the length of the door frame. According to this invention, by sliding the outdoor operating unit along the longitudinal side of the door frame, the locking device can be unlocked from the outside.

[0032] Furthermore, the present invention relates to the shutter device described above, wherein the locking device comprises a pin member provided on the frame, a hook member provided on the door edge plate which moves to the locked position and engages with the pin member when the shutter curtain is in the closed position, a biasing member which biases the hook member toward the unlocking direction, and an engaging member which contacts the hook member when the hook member engages with the pin member and maintains the hook member in the locked position against the biasing force of the biasing member, and the outdoor operating unit slides along the longitudinal side of the door edge frame to move the engaging member in a direction that releases the contact with the hook member. According to this invention, by operating the outdoor operating unit, the engaging member moves in a direction that releases the engagement with the hook member, causing the hook member to move in the unlocking direction due to the biasing force of the biasing member, and thus the locking device is unlocked.

[0033] Furthermore, the present invention is characterized in that, in the shutter device described above, the outdoor operating unit has an operating surface whose distance from the engaging member changes when it moves along the longitudinal side of the door frame, and is linked to the engaging member via the operating surface. According to this invention, when the outdoor operating part is moved along the longitudinal side of the door frame, the working surface moves closer to the engaging member, and consequently, the engaging member can be moved in a direction that releases the engagement with the hook member.

[0034] Furthermore, the present invention is characterized in that, in the shutter device described above, the shutter curtain is arranged to slide vertically relative to the frame, and the door edge plate is provided at its lower end. According to this invention, an outdoor operating unit is provided at the lower end of the frame, which is advantageous in terms of operability.

[0035] Furthermore, the present invention is characterized in that, in the shutter device described above, the locking device is provided with an indoor operating unit for releasing the locked state, which is located in a position that can be operated from the indoor side. According to this invention, during normal use, the shutter curtain can be moved to the open position by operating the indoor control unit. [Explanation of Symbols]

[0036] 1 Locking device, 10 Frame, 12 Lower frame, 12a Shutter receiving part, 13 Vertical frame, 13a Slat guide, 21 Shutter curtain, 22 Base plate, 22a Base plate body, 22b Outer cover plate part, 22c Support plate part, 22d Notch, 22e Support shaft part, 30 Pin member, 31 Pin bracket, 31a Guide groove, 40 Hook unit, 41 Unit case, 41e Guide plate part, 41f Guide hole, 41g Pin insertion groove, 42 Unlocking trigger, 42a Trigger board, 42b Operation input plate part, 42c Input plate part, 42d Guide pin, 42e Engaging projection, 42f Contact shaft part, 43 Hook member, 43a First plate part, 43b Second plate part, 43c Third plate part, 43d Spring engaging piece, 43e Hook shaft, 43f Hook groove, 44 Spring member, 50 Indoor operating part, 60 Outdoor operating part, 61 Slide member, 61a Operating plate part, 61b Operating plate part, 61c Guide rod, 61d Operating surface, 62 Latch mechanism

Claims

1. Frame and, A shutter curtain is slidably mounted on the frame and has a door-edge plate at its tip, A locking device provided on the door panel and the frame prevents the shutter curtain from moving to the open position when the shutter curtain is locked in the closed position. A shutter device comprising the above, wherein the frame body is provided with an outdoor operating section for unlocking the locking device at a position that allows it to be operated from the outside.

2. The frame comprises two guide frames disposed on both side edges of the shutter curtain to guide the sliding of the shutter curtain, and a door frame provided between the ends of the guide frames and positioned alongside the door panel when the shutter curtain is in the closed position. The shutter device according to claim 1, characterized in that the outdoor operating unit is slidably disposed along the longitudinal direction of the door frame.

3. The aforementioned locking device, A pin member provided on the frame, A hook member provided on the door panel, which moves to the locked position and engages with the pin member when the shutter curtain is in the closed position, A biasing member that biases the hook member toward the unlocking direction, An engaging member that contacts the hook member when the hook member engages with the pin member, and maintains the hook member in the locked position against the biasing force of the biasing member; Equipped with, The shutter device according to claim 2, characterized in that the outdoor operating unit slides along the longitudinal side of the door frame to move the engaging member in a direction that releases the contact state with the hook member.

4. The shutter device according to claim 3, wherein the outdoor operating unit has an operating surface whose distance from the engaging member changes when it moves along the longitudinal side of the door frame, and is linked to the engaging member via the operating surface.

5. The shutter device according to claim 1, characterized in that the shutter curtain is disposed to slide vertically relative to the frame, and the door edge plate is provided at the lower end.

6. The shutter device according to claim 1, characterized in that the locking device is provided with an indoor operating unit for releasing the locked state, in a position that can be operated from the indoor side.

Images