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 base plate 22 is provided with an outdoor operating part 60 that unlocks the locking device 1 in a position that can be operated from the outside.

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 are provided with a shutter device 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 it is possible to close the opening by pulling out the shutter curtain downward. A locking device is provided for this type of shutter 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 arranged 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 building with a relatively large height, a situation may occur where entry into the room from an opening at a high place occurs in an emergency such as a fire. At this time, when the shutter device provided at the opening is arranged 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 door-edge plate is provided with an outdoor operating part 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 door panel, the shutter curtain can be opened by operating the outdoor operating unit in an emergency, 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 shows the lower frame portion of the door / window as seen from the outside; (a) is a perspective view from above, and (b) is a perspective view from above with the bracket cover removed. [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 a perspective view of the outdoor operating unit, unit case, and bracket cover applied to the shutter device, as seen from the outside. [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, showing the operating handle of the outdoor operating unit extending horizontally, and (b) is a vertical cross-sectional view seen from the indoor side, showing the operating handle of the outdoor operating unit with the sliding member positioned in the working position. [Figure 16] This is a perspective view from the outside of a building component that includes a shutter device, which is a modified example of the present invention. [Figure 17] Figure 16 shows a perspective view from the outside of the outdoor operating unit, unit case, and bracket cover applied to the shutter device of Modification 1 shown in Figure 16. [Figure 18] This is a perspective view from the outside of a building component that includes a shutter device, which is a modified example of the present invention (modification 2). [Figure 19] It is a perspective view seen from the outdoor side of an outdoor operation unit, a unit case, and a bracket cover applied to the shutter device of Modification 2 shown in FIG. 18.

Embodiment for Carrying Out the Invention

[0009] Hereinafter, a preferred embodiment of the shutter device according to the present invention will be described in detail with reference to the accompanying drawings. In the following description, for convenience, the terms "prospective direction" and "search direction" may be used. The prospective direction is the direction along the depth of the shutter device as indicated by arrow A in the figure. A surface along the prospective direction may be referred to as a prospective surface. The search direction is the direction along the vertical direction orthogonal to the prospective direction in the case of an object extending along the horizontal direction such as a lower frame or the like. In the case of an object extending along the vertical direction, the direction along the horizontal direction orthogonal to the prospective direction is referred to as the search direction. A surface along the search direction may be referred to as a search surface.

[0010] FIGS. 1 to 7 show a fitting equipped with a shutter device which is an embodiment of the present invention. The fitting illustrated here is attached to an opening of a frame body provided as an emergency access opening set at a high place on the third floor or higher in a building such as a house or a building. In the present embodiment, although not explicitly shown in the figure, a fitting called a sliding window in which outdoor side shutters and indoor side shutters are respectively arranged slidably to the left and right on a frame body 10 is illustrated. The frame body 10 is configured by surrounding the upper frame 11, the lower frame 12, and the left and right vertical frames 13. The upper frame 11, the lower frame 12, and the left and right vertical frames 13 are configured to include an outdoor side metal frame portion 11M, 12M, 13M and an indoor side resin frame portion 11P, 12P, 13P. As is clear from the figure, the lower frame 12 and the vertical frame 13 are configured to have a larger dimension along the prospective direction than the upper frame 11. A slat guide 13a is provided vertically along a portion protruding to the outdoor side from the upper frame 11 on the vertical frame 13, and a shutter receiving portion 12a is provided at a portion located on the outdoor side from the upper frame 11 on the lower frame 12.

[0011] The frame 10 described above has a shutter box 20 on the upper part of the upper frame 11, and a shutter curtain 21 is installed inside the shutter box 20. The shutter box 20 is composed of a bottom plate 20a, a back plate 20b, two side plates 20c, a top plate 20d, and a front plate 20e. The shutter box 20 has a shutter opening 20f on the lower surface corresponding to the slat guide 13a of the vertical frame 13. The shutter curtain 21 is constructed by connecting a plurality of slats 21a to each other. A bottom plate (door edge plate) 22 is provided at the tip of the shutter curtain 21. The slats 21a are, for example, elongated thin plate-like members made of metal, and have a length that spans the distance between the vertical frames 13. These slats 21a are connected so that they can rotate relative to each other around an axis along the left and right sides, and are housed inside the shutter box 20 in a rolled-up state. The seat plate 22 comprises a seat plate body 22a, an outer cover plate portion 22b, and a support plate portion 22c. The seat plate body 22a is hollow in shape, with an inner surface on the inner circumference side being flat. The outer cover plate portion 22b is a thin plate that protrudes from the tip on the outer circumference side of the seat plate body 22a toward the tip side. The support plate portion 22c protrudes perpendicularly from the inner surface of the seat plate body 22a and then extends in a curved manner toward the tip side.

[0012] The aforementioned joinery includes a locking device 1 comprising a pin member 30 provided on the shutter receiving portion 12a of the lower frame 12 and a hook unit 40 provided on the base plate 22. The pin member 30 is cylindrical in shape and extends along the depth direction, and is fixed to the upper surface of the shutter receiving portion 12a via a pin bracket 31. The pin bracket 31 and pin member 30 are positioned to be housed between the base plate body 22a and the tip end portion of the support plate portion 22c 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 (closed position of the shutter curtain 21). A bracket cover 32 with an open top surface is provided around the pin bracket 31.

[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 FIGS. 8 to 13, the unit case 41 is configured to include a case substrate portion 41a, side plate portions 41b, mounting plate portions 41c, a lower plate portion 41d, and guide plate portions 41e. The case substrate portion 41a is in the shape of a rectangular flat plate. A guide hole 41f that is an elongated hole extending vertically is provided in the case substrate portion 41a. The side plate portions 41b extend from both side edges of the case substrate portion 41a toward the interior of the room respectively. The mounting plate portions 41c extend in a direction separating from each other from the lower edges of the individual side plate portions 41b. The lower plate portion 41d extends from the lower edge of the case substrate portion 41a toward the interior of the room. The lower surface of the lower plate portion 41d is formed to be located on the same plane as the lower surface of the mounting plate portions 41c. The guide plate portions 41e extend downward from the inner side edges of the lower plate portion 41d in the room. A pin insertion groove 41g is provided in the guide plate portions 41e. The pin insertion groove 41g extends vertically with a width allowing the pin member 30 to be inserted, and opens at the lower edge of the guide plate portions 41e.

[0014] This unit case 41 is attached to the seat plate 22 by screwing a screw member N1 from the lower surface of the support plate portion 22c into the individual mounting plate portions 41c in a state where the case substrate portion 41a is abutted against the surface of the seat plate main body 22a facing the interior of the room and the mounting plate portions 41c and the lower plate portion 41d are abutted against 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 where the unit case 41 is attached is a position where the pin member 30 can be inserted into the pin insertion groove 41g when the shutter curtain 21 pulled out from the shutter opening 20f is slid downward along the slat guide 13a and the seat plate 22 is disposed close to the shutter receiving portion 12a. A unlocking trigger (engaging member) 42 and a hook member 43 are disposed in the unit case 41.

[0015] The unlocking trigger 42 has a trigger board 42a, an operation input plate 42b, and an input plate 42c. The trigger board 42a is a flat plate positioned between the side plates 20c. The trigger board 42a is provided with a guide pin 42d and an engaging projection 42e. The guide pin 42d protrudes outward from a portion corresponding to the guide hole 41f of the case board 41a. The engaging projection 42e is a flat plate that protrudes inward from a position approximately in the center of the trigger board 42a. The operation input plate 42b extends almost horizontally inward from the upper edge of the trigger board 42a. The input plate 42c is a flat plate that is narrower than the trigger board 42a and extends downward from the lower end of the trigger board 42a. The unlocking trigger 42 is arranged so as to be able to move up and down along the surface of the case substrate 41a, with the trigger substrate 42a overlapping the case substrate 41a with the guide pin 42d passing through the guide hole 41f, and the input plate 42c passing through the support plate 22c via 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 5 and Figure 14, the locking device 1 described above is provided with an outdoor operating unit 60 on the base plate 22. 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 composed of an outer plate 61, an inner plate 62, a rotating guide 63, a shaft member 64, an operating handle 65, and a cam member 66. The outer plate 61 and the inner plate 62 are provided so as to sandwich the outer plate portion 22a1 located on the outdoor side of the base plate body 22a. A stopper piece 61a is provided on the upper edge of the outer plate 61 so as to protrude to the outside on the right side when viewed from the outside. The rotating guide 63 is cylindrical with its axis aligned with the depth direction and is attached to the outer plate 61 so as to protrude toward the interior from the outer plate 61. The rotating guide 63 is provided on the base plate 22 such that its left-right position matches the input plate portion 42c of the unlocking trigger 42, and its up-down position is below the input plate portion 42c. The end of the rotating guide 63 located on the interior side extends to the interior through a notch 23 provided in the outer plate portion 22a1 and a notch 62a provided in the inner plate 62, and further protrudes to the interior side through a notch 24 in the inner plate portion 22a2 located on the interior side of the base plate body 22a. The shaft member 64 is rotatably disposed in the center of the rotating guide 63, with both ends protruding to the outside of the rotating guide 63.

[0024] The operating handle 65 is attached to the portion of the shaft member 64 that protrudes outward. In this embodiment, an operating handle 65 having a shaft support portion 65a, an outward projection portion 65b, and an operating lever portion 65c is used. The shaft support portion 65a is a horizontally elongated flat plate and is connected to the shaft member 64 via its center, allowing it to rotate together with the shaft member 64. The outward projection portion 65b extends outward from one end of the shaft support portion 65a. The outward projection dimension of the outward projection portion 65b is set to be approximately twice that of the shaft support portion 65a. The operating lever portion 65c extends outward from the extended end of the outward projection portion 65b.

[0025] As is clear from the figures, when the operating handle 65 extends almost horizontally toward the left side of the shaft member 64 as viewed from the outside, the other end of the shaft support portion 65a abuts against the stopper piece 61a of the outer plate 61, preventing counterclockwise rotation around the shaft member 64. The shaft support portion 65a is also provided with a rotation-restricting projection 65d that abuts against the stopper piece 61a when the operating handle 65 is rotated approximately 45° clockwise as viewed from the outside from its horizontally extended position. As shown in Figures 11 and 15, the cam member 66 is provided at the end of the shaft member 64 that protrudes toward the interior side, and is capable of rotating together with the shaft member 64. As shown in Figures 3 and 4, the position of the cam member 66 in the depth direction coincides with the input plate portion 42c of the unlocking trigger 42, and is set so that it can abut against the lower surface of the input plate portion 42c when rotated around the shaft member 64. As shown in Figure 15(a), the cam surface 66a formed on the circumferential surface of the cam member 66 is configured to maintain the unlocking trigger 42 in its lowest position relative to the unit case 41 when the operating handle 65 extends horizontally, while as shown in Figure 15(b), when rotated approximately 45° counterclockwise as viewed from the indoor side, it moves the unlocking trigger 42 upward, thereby releasing the engagement between the engaging projection 42e and the hook member 43.

[0026] With the building fixture configured as described above, the operating handle 65 can be operated from outside even when the locking device 1 is locked. Therefore, in emergencies such as a fire, the locking device 1 can be unlocked by operating the operating handle 65 from the outside, allowing the shutter curtain 21 to be opened quickly and entry into the room to proceed.

[0027] Furthermore, the operating handle 65 can only be operated from the outside when the shutter curtain 21 is in the closed position, preventing accidental operation. Therefore, under normal use, there is no risk of the unlocking trigger 42 remaining in the upward position, and the locking device 1 will not fail to lock when the shutter curtain 21 is moved to the closed position.

[0028] In the above-described embodiment, the operating handle 65 is shown as having an outward projection 65b that protrudes relatively large from the seat plate 22. However, an operating handle with a reduced protrusion from the seat plate 22 may be used, for example, as shown in the following modified example.

[0029] (Variation 1) In the modified example 1 shown in Figures 16 and 17, the operating handle 165 of the outdoor operating unit 160 has a shaft support portion 165a, an outward projection portion 165b, and an operating lever portion 165c. The shaft support portion 165a is a horizontally elongated flat plate and is connected to the shaft member 64 via its center, allowing it to rotate together with the shaft member 64. The lower edge of the shaft support portion 165a extends horizontally when positioned horizontally. The upper edge of the shaft support portion 165a extends horizontally in the portion located to the right of the shaft member 64 when viewed from the outside, and abuts against the stopper piece 61a of the outer plate 61. The portion of the shaft support portion 165a above the shaft member 64 is inclined to gradually rise towards the left, and the portion located to the left of the shaft member 64 extends horizontally. The outward projection portion 165b extends outwards from the portion located to the left of the shaft support portion 165a. The projection dimension of the outward projection portion 165b toward the outside is set to be smaller than the extended dimension of the shaft support portion 165a. The vertical dimension of the outward projection portion 165b is the same as the end located on the left side of the shaft support portion 165a. The operating lever portion 165c extends outward from the extended end of the outward projection portion 165b. The upper edge of the operating lever portion 165c extends almost horizontally from the outward projection portion 165b, while the lower edge of the operating lever portion 165c extends outward, then upward, and then bends outward. In other words, the operating lever portion 165c is configured such that the vertical dimension of the part located on the outer circumference is smaller than that of the inner circumference. Although not explicitly shown in the figure, the outdoor operating portion 160 is configured with an outer plate 61, an inner plate 62, a rotation guide 63, and a cam member 66, similar to those in the embodiment. Furthermore, other components similar to those in the embodiment are denoted by the same reference numerals.

[0030] In the modified example 1 described above, which includes an outdoor operating unit 160, the operating handle 165 can be operated from the outside even when the locking device 1 is locked. Therefore, in emergencies such as a fire, the locking device 1 can be unlocked by operating the operating handle 165 from the outside, allowing the shutter curtain 21 to be opened quickly and entry into the room to proceed.

[0031] Furthermore, the operating handle 165 can only be operated from the outside when the shutter curtain 21 is in the closed position, and its protrusion from the base plate 22 is kept small, so there is no concern that it may be operated unintentionally during normal use. Therefore, during normal use, there is no risk of the unlocking trigger 42 remaining in the upward position, and the locking device 1 will not fail to lock when the shutter curtain 21 is moved to the closed position. The inclined upper edge of the shaft support portion 165a functions similarly to the rotation restricting projection 65d in the embodiment, restricting the rotation range of the operating handle 165 to 45°.

[0032] (Modification 2) In the modified example 2 shown in Figures 18 and 19, the operating handle 265 of the outdoor operating unit 260 is a type having a shaft support portion 265a, two lever arm portions 265b, and a rotation restricting projection 265d. The shaft support portion 265a is a circular flat plate and is connected to the shaft member 64 via its center, allowing it to rotate together with the shaft member 64. The lever arm portions 265b each extend radially from the shaft support portion 265a in opposite directions. Each lever arm portion 265b is provided with an operating projection 265c. The operating projection 265c protrudes from the lever arm portion 265b toward the outside. In the illustrated example, when the two lever arm portions 265b are arranged to extend horizontally, an operating projection 265c is provided on the lower edge of the lever arm portion 265b located on the right side when viewed from the outside, and an operating projection 265c is provided on the upper edge of the lever arm portion 265b located on the left side. The rotation restricting projection 265d protrudes upward from the portion above the shaft member 64 when the two lever arm portions 265b are arranged to extend horizontally, and contacts the stopper piece 61a when rotated approximately 45° clockwise when viewed from the outside. Although not explicitly shown in the figure, the outdoor operating unit 260 is configured with the same outer plate 61, inner plate 62, rotation guide 63, and cam member 66 as in the embodiment. In addition, the same reference numerals are used for other components that are the same as in the embodiment.

[0033] In the modified example 2 described above, which includes an outdoor operating unit 260, the operating handle 265 can be operated from the outside even when the locking device 1 is locked. Therefore, in emergencies such as a fire, the locking device 1 can be unlocked by operating the operating handle 265 from the outside, allowing the shutter curtain 21 to be opened quickly and entry into the room to proceed.

[0034] Moreover, the operating handle 265 can only be operated from the outside when the shutter curtain 21 is in the closed position, and furthermore, its protrusion from the base plate 22 is kept small, so there is no concern that it may be operated unintentionally during normal use. For this reason, during normal use, there is no risk of the unlocking trigger 42 remaining in the upward position, and the locking device 1 will not fail to lock when the shutter curtain 21 is moved to the closed position. In addition, since the operating projections 265c are provided on opposite edges of the two lever arm portions 265b, for example, the operating handle 265 can be rotated while the thumb is placed on one and the index finger on the other, making the operation easy to perform.

[0035] 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.

[0036] 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 door-edge plate is provided with an outdoor operating part 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 door panel, in an emergency the shutter curtain can be opened by operating the outdoor operating unit, making it easy to enter from the outside.

[0037] Furthermore, the present invention is characterized in that, in the shutter device described above, the outdoor operating unit is provided on the surface of the door panel facing the outside so as to be rotatable around an axis along the depth direction. According to this invention, the locking device can be unlocked from the outside by rotating the outdoor operating unit.

[0038] 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 a 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 rotates relative to the door edge plate 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.

[0039] Furthermore, the present invention is characterized in that, in the shutter device described above, the outdoor operating unit comprises a shaft member rotatably disposed with respect to the door edge plate, an operating handle provided on the portion of the shaft member located outside the room, and a cam member provided on the shaft member in a state that it is linked to the engaging member via a cam surface. According to this invention, when the operating handle of the outdoor control unit is rotated, the engaging member can be moved in a direction that releases the engagement state with the hook member via the cam surface of the cam member.

[0040] 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.

[0041] 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]

[0042] 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, 22e Support shaft part, 30 Pin member, 31 Pin bracket, 40 Hook unit, 41 Unit case, 41e Guide plate part, 41f Guide hole, 41g Pin insertion groove, 42 Unlocking trigger, 42a Trigger circuit board, 42b Operation input plate part, 42c Input plate part, 42d Guide pin, 42e Engaging projection, 43 Hook member, 43a First plate part, 43b Second plate part, 43c Third plate part, 43d Spring engaging piece, 43e Hook shaft part, 43f Hook groove, 44 Spring member, 50 Indoor operating section, 60, 160, 260 Outdoor operating section, 61 Outer plate, 61a Stopper piece, 62 Inner plate, 63 Rotation guide, 64 Shaft member, 65, 165, 265 Operating handle, 65a, 165a, 265a Shaft support part, 65b, 165b Outer projection, 65c, 165c Operating lever part, 65d, 265d Rotation restricting projection, 66 Cam member, 66a Cam surface, 265b Lever arm part, 265c Operating projection

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 door edge plate 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 shutter device according to claim 1, characterized in that the outdoor operating unit is provided on the surface of the door panel facing the outside, in such a state that it can rotate around an axis along the depth direction.

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 rotates relative to the door edge plate, thereby moving the engaging member in a direction that releases the contact state with the hook member.

4. The shutter device according to claim 3, characterized in that the outdoor operating unit comprises a shaft member rotatably disposed with respect to the door edge plate, an operating handle provided on the portion of the shaft member located outside the room, and a cam member provided on the shaft member in a state that it is linked to the engaging member via a cam 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