Shutter apparatus

Abstract

To provide a shutter apparatus capable of preventing damaging of a shutter curtain in the middle of an opening operation.SOLUTION: This shutter apparatus comprises: a vertically elongatable shutter curtain; and an opening / closing mechanism for opening / closing the shutter curtain by elongating / contracting the shutter curtain. The shutter curtain includes frames spaced apart from each other in a vertical direction and a sheet constituting a region between the frames. The opening / closing mechanism includes a drooping part which vertically droops to be engaged with a movable frame, and a winding mechanism for winding or delivering the drooping part. In a curtain thickness direction, the drooping part and the sheet are arranged in a place shifted to one side from the center position of the frames, and the sheet is disposed farther from the center position than the drooping part.SELECTED DRAWING: Figure 3

Description

[Technical Field]

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

[0002] A conventional shutter device has been proposed, as shown in Fig. 12(A), which includes a curtain body 910 in which long, thin aggregates 900 are attached horizontally at predetermined intervals and hung from an opening in a building or the like, a belt 920 connected to the lowest aggregate 901 of the curtain body 910, and an opening / closing device 930 that can open and close the curtain body 910 by winding or unwinding the belt 920 (see, for example, Patent Document 1). When the opening / closing device 930 winds up the belt 920, adjacent aggregates 900 approach each other from the bottom, as shown in Fig. 12(B), and the curtain body 910 between adjacent aggregates 900 is bent and folded so as to be convex in the direction away from the belt 920. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Utility Model Application Publication No. 57-058693 Summary of the Invention [Problem to be solved by the invention]

[0004] For example, if a situation such as a strong wind E blowing from the front side of curtain body 910 occurs while curtain body 910 is being opened, as shown in Figure 12(B), curtain body 910 between adjacent aggregates 900 may bend in a concave direction toward belt 920 and come into contact with belt 920. If curtain body 910 continues to open while in contact with belt 920, as shown in Figure 12(C), there is a high possibility that curtain body 910 will be damaged by friction between curtain body 910 and belt 920.

[0005] In view of the above circumstances, the present invention aims to provide a shutter device that prevents damage to the shutter curtain during the opening operation. [Means for solving the problem]

[0006] The present invention for achieving the above object comprises a shutter curtain configured to be expandable in the vertical direction, and an opening / closing mechanism that opens and closes the shutter curtain by expanding and contracting the shutter curtain, the shutter curtain having a plurality of frame sections that are arranged at intervals in the vertical direction with their longitudinal direction parallel to the width direction of the shutter curtain (hereinafter referred to as the curtain width direction), and whose position in the vertical direction is changeable, a movable frame section that is arranged below the plurality of frame sections and is moved in the vertical direction by the opening / closing mechanism, and a sheet section that is connected to both of the frame sections that are adjacent in the vertical direction, covers the area between the adjacent frame sections, and is deformed to bend when the adjacent frame sections approach each other in the vertical direction by the opening / closing mechanism, and is deformed to be taut when the adjacent frame sections move away from each other, and the opening / closing mechanism hangs down in the vertical direction and engages with the movable frame sections. and a winding mechanism that winds up the hanging portion to raise the movable frame portion in the vertical direction, while pushing up the plurality of frame portions in the vertical direction and bringing them closer to each other through the movable frame portion, and that unwinds the hanging portion to lower the movable frame portion in the vertical direction, while lowering the plurality of frame portions in the vertical direction and moving them away from each other, wherein, when a direction perpendicular to both the vertical direction and the curtain width direction is defined as a thickness direction of the shutter curtain (hereinafter referred to as the curtain thickness direction), the sheet portion is disposed at a position shifted to one side from a central position of the frame portion in the curtain thickness direction, and the hanging portion hangs down in the vertical direction at a position shifted to one side from the central position, and the sheet portion is disposed farther from the central position in the curtain thickness direction than the hanging portion.

[0007] In relation to the above shutter device, the hanging portion may be arranged between the outer edge of the frame portion and the sheet portion located outside the outer edge in the curtain thickness direction.

[0008] In relation to the above-mentioned shutter device, the sheet portion may have a separation area in which it separates from the frame portion in a section of the curtain width direction within the connection range where the sheet portion is connected to the frame portion, and the hanging portion may pass through the separation area in the vertical direction.

[0009] In relation to the above shutter device, the hanging portion may be disposed between an outer edge of the frame portion and the central position in the curtain thickness direction.

[0010] In relation to the above-mentioned shutter device, the hanging portion may be characterized by having a first hanging piece hanging down in the vertical direction at a location shifted to one side from the central position, and a second hanging piece hanging down in the vertical direction at a location shifted to the other side opposite the one side from the central position.

[0011] In the above-described shutter device, a lower end of the first hanging piece and a lower end of the second hanging piece may be continuous with each other in the vicinity of the movable frame.

[0012] In relation to the above-described shutter device, the opening and closing mechanism may be characterized by winding up both the first hanging piece and the second hanging piece.

[0013] In relation to the above-mentioned shutter device, the sheet portion of the shutter curtain may comprise a first sheet piece arranged at a location shifted to one side from the central position in the frame portion, and a second sheet piece arranged at a location shifted to the other side opposite the one side from the central position in the frame portion, wherein the first sheet piece is arranged further from the central position than the first hanging piece on the one side, and the second sheet piece is arranged further from the central position than the second hanging piece on the other side.

[0014] The present invention, which achieves the above object, comprises a shutter curtain configured to be expandable in the vertical direction, and an opening / closing mechanism that expands and contracts the shutter curtain in the vertical direction to open and close the shutter curtain, wherein the shutter curtain comprises a plurality of frame sections that are arranged at intervals in the vertical direction with their longitudinal direction parallel to a width direction of the shutter curtain (hereinafter referred to as the curtain width direction), and whose position in the vertical direction is changeable; a movable frame section that is arranged below the plurality of frame sections and is moved in the vertical direction by the opening / closing mechanism; a sheet section that is connected to both of the frame sections that are adjacent in the vertical direction, covers the area between the adjacent frame sections, and is deformed to bend when the adjacent frame sections approach each other in the vertical direction by the opening / closing mechanism, and is deformed to be taut when the adjacent frame sections move away from each other; and a regulating member that is connected to both of the frame sections that are adjacent in the vertical direction, and whose vertical distance varies depending on the vertical distance between the adjacent frame sections. and a member, wherein the opening and closing mechanism has a belt- or string-like hanging portion that hangs down in the vertical direction and engages with the movable frame portion, and a winding mechanism that raises the movable frame portion in the vertical direction by winding up the hanging portion, while pushing up the remaining multiple frame portions in the vertical direction through the movable frame portion and bringing them closer to each other, and that lowers the movable frame portion in the vertical direction by unwinding the hanging portion, while lowering the multiple frame portions in the vertical direction to move them away from each other, wherein when a direction perpendicular to both the vertical direction and the curtain width direction is defined as the thickness direction of the shutter curtain (hereinafter referred to as the curtain thickness direction), the sheet portion is arranged at a position shifted to one side from a central position of the frame portion in the curtain thickness direction, and the regulating member is connected to the frame portion at a position shifted to the one side from the central position, and the sheet portion is arranged farther from the central position in the curtain thickness direction than the regulating member. [Effects of the Invention]

[0015] The shutter device of the present invention can provide the excellent effect of preventing damage to the shutter curtain during the opening operation. [Brief explanation of the drawings]

[0016] [Figure 1] FIG. 2 is a front view of the shutter device according to the first embodiment of the present invention. [Figure 2] FIG. 2 is a cross-sectional view taken along the arrow FF in FIG. 1. [Figure 3] (A) is a cross-sectional view taken along the line GG in Fig. 1. (B) to (E) are modified examples of the movable frame portion. [Figure 4] 5A and 5B are cross-sectional views showing the opening operation of the shutter curtain of the shutter device in a time series in the first embodiment of the present invention. [Figure 5] 5A and 5B are cross-sectional views showing the opening operation of the shutter curtain of the shutter device in a time series in the first embodiment of the present invention. [Figure 6] 5A and 5B are cross-sectional views showing the closing operation of the shutter curtain of the shutter device in a time series according to the first embodiment of the present invention. [Figure 7] 1A is a cross-sectional view of a guide mechanism of a shutter device according to a first embodiment of the present invention, and FIG. 1B is a front view of the guide mechanism of a shutter device according to the first embodiment of the present invention. [Figure 8] 1A and 1B are cross-sectional views of a shutter device according to a first embodiment of the present invention. [Figure 9] 1A is a side cross-sectional view of a modified example of the shutter device according to the first embodiment of the present invention, and FIG. 1B is a cross-sectional view taken along the line JJ in FIG. [Figure 10] FIG. 10 is a cross-sectional view of a shutter device according to a second embodiment of the present invention. [Figure 11] 10A is a cross-sectional view seen from the side of a shutter device according to a third embodiment of the present invention, and FIG. 10B is a front view of a part of the shutter curtain 1. [Figure 12]10A to 10C are diagrams showing the opening operation of a conventional shutter device in chronological order. DETAILED DESCRIPTION OF THE INVENTION

[0017] Hereinafter, an embodiment of the present invention will be described with reference to the accompanying drawings. The accompanying drawings are an example of an embodiment of the present invention, and in the drawings, parts with the same reference numerals represent the same objects. Furthermore, the shapes and dimensional ratios of each part in each drawing are not necessarily accurate.

[0018] First Embodiment The shutter device in the first embodiment of the present invention includes a shutter curtain 1 , an opening / closing mechanism 2 , and a guide mechanism 3 .

[0019] <Shutter curtain> The shutter curtain 1 will be described with reference to Fig. 1. The shutter curtain 1 in this embodiment is configured to be extendable in the vertical direction V. Specifically, as shown in Fig. 1, the shutter curtain 1 has a plurality of frame portions 10, a movable frame 10A, and a sheet-like sheet portion 11.

[0020] In this embodiment, the up-down direction V is a direction parallel to the vertical direction and the height direction of the shutter curtain 1. In the following, the left-right direction of the shutter curtain 1 is defined as the width direction of the shutter curtain 1 (hereinafter referred to as the curtain width direction) W (see FIG. 1), and the direction parallel to both the up-down direction V and the curtain width direction W is defined as the thickness direction of the shutter curtain 1 (hereinafter referred to as the curtain thickness direction) D (see FIG. 2). One side of the curtain thickness direction D is defined as the front surface DF, and the other side is defined as the rear surface DB. Note that defining one side as the front surface and the other side as the rear surface is for convenience, and the other side may be the front surface and one side as the rear surface.

[0021] <Frame section> The frame portion 10 will be described with reference to Figures 1 and 2. The multiple frame portions 10 form part of the shutter curtain 1, and are arranged at intervals in the vertical direction V with their longitudinal directions parallel to the curtain width direction W. The length of the frame portions 10 in the curtain width direction W is set to be almost the same as or greater than the width of the sheet portion 11, which will be described later. It is preferable that the material of the frame portions 10 be metal. As shown in Figure 2, the frame portion 10 specifically has a frame main body portion 101 and multiple reinforcing frame portions 102.

[0022] As shown in FIG. 2(A), the frame main body 101 is formed of a frame (cylindrical body) 101A whose central axis is parallel to the up-down direction V. The length of the frame 101A in the curtain width direction W is the same as the width of the sheet 11. In this embodiment, the frame 101A has a substantially rectangular cylindrical cross section perpendicular to the axis, but this is not limited thereto and other shapes may be used. Furthermore, the frame main body 101 is not limited to the frame 101A and may have other configurations. For example, the frame main body 101 may be integrally formed of a member such as an H-beam whose longitudinal direction is the curtain width direction W. Furthermore, as shown in FIG. 2(B), the frame main body 101 may separately include a first main body 101A1 extending in the curtain width direction W and to which one sheet 11 is fixed, and a second main body 101A2 extending parallel to the first main body 101A and spaced apart in the curtain thickness direction D and to which the other sheet 11 is fixed. In this case, the first body portion 101A1 and the second body portion 101A2 may be configured by, for example, a metal pipe or a metal column. Note that the first body portion 101A1 and the second body portion 101A2 may be considered to be contained within the frame 101A in FIG. 2(A).

[0023] The multiple reinforcing frame portions 102 reinforce the frame body 101A (the first main body portion 101A1 and the second main body portion 101A2 in FIG. 2(B)) on the inner periphery side of the frame body 101A. The multiple reinforcing frame portions 102 are connected to the frame body 101A in a truss shape. The reinforcing frame portions 102 are provided to reinforce the frame body 101A. If the frame main body portion 101 is configured in a manner other than the frame body 101A and there is no problem with the strength of the frame main body portion 101, the reinforcing frame portions 102 may be omitted.

[0024] <Movable frame part> The movable frame 10A is disposed below the plurality of frame sections 10. The structure of the movable frame 10A is almost the same as that of the frame sections 10, and therefore a description thereof will be omitted here.

[0025] <Seat section> The sheet portion 11 will be described with reference to FIGS. 1 and 2. The sheet portion 11 is arranged to cover the space between adjacent frame portions 10 of the shutter curtain 1 in the vertical direction V (hereinafter referred to as adjacent frame space R). The sheet portion 11 is connected to both of the frame portions 10 adjacent in the vertical direction V. In this embodiment, the sheet portion 11 has a front sheet portion 11F that covers the front surface DF side of the adjacent frame space R, and a rear sheet portion 11B that covers the rear surface DB side of the same adjacent frame space R. Since the adjacent frame space R is rectangular when viewed from the curtain thickness direction D, the front sheet portion 11F and the rear sheet portion 11B that cover it are strip-shaped. Note that the present invention is not limited to the above. For example, one front sheet portion 11F or one rear sheet portion 11B may collectively cover multiple adjacent frame spaces R that are lined up in the vertical direction.

[0026] In addition, in this embodiment, the sheet portion 11 is illustrated as being provided on both the front and rear sides of the shutter curtain 1, but this is not limited to this and the sheet portion 11 may be provided only on the front side or only on the rear side of the shutter curtain 1.

[0027] The sheet portion 11 is made of a flexible material. Examples of materials for the sheet portion 11 include, but are not limited to, resin materials such as polyvinyl chloride, and other materials may also be used. The sheet portion 11 may be made of a breathable material (for example, a mesh material) to reduce wind resistance.

[0028] As shown in FIG. 2(A), the sheet portion 11 is connected to the outer edge (outer edge surface) 103 of the frame portion 10 (frame main body portion 101) in the curtain thickness direction D. The sheet portion 11 and the frame portion 10 can be connected using various jigs, such as screws and rivets. If the range in the curtain width direction W where the sheet portion 11 and the outer edge (outer edge surface) 103 face each other is defined as a connection range S, the sheet portion 11 and the outer edge (outer edge surface) 103 are connected in a portion of the connection range S and are separated from each other in the remaining section (remaining section). In this remaining section, a tunnel-shaped separation region 104 extending in the up-down direction H is formed as the sheet portion 11 bends relative to the frame portion 10. In this embodiment, there are multiple (four in this embodiment) separation regions 104. Both edge portions 104A and 104B of the separation region 104 are fixed to the frame portion 10 by jigs, such as screws. The belt portion 20 passes through the tunnel-shaped internal space 12 in the separation region 104 in the vertical direction H. Therefore, the width of the internal space 12 is equal to or greater than the belt width of the belt portion 20. As shown in FIG. 1 , the positions of the separation regions 104 in the curtain width direction W of multiple frame portions 10 aligned in the vertical direction are aligned with each other. As a result, the belt portion 20 hangs down linearly while passing through multiple separation regions 104 in the vertical direction. Note that the number of separation regions 104 is not particularly limited in the present invention.

[0029] As shown in Fig. 2(A), the center position of the frame portion 10 in the curtain thickness direction D is defined as the frame center position M. The front sheet portion 11F is disposed at a position (offset position) shifted from the frame center position M in the front DF direction. The rear sheet portion 11B is disposed at a position (offset position) shifted from the frame center position M in the rear DB direction.

[0030] Since the shutter curtain 1 is configured as described above, as shown in Figure 4, when adjacent frame portions approach each other in the vertical direction V, the sheet portion 11 deforms and contracts, and as shown in Figure 3, when adjacent frame portions move away from each other, the sheet portion 11 deforms and expands, and contracts.

[0031] <Opening and closing mechanism> The opening and closing mechanism 2 will be described with reference to Fig. 1. The opening and closing mechanism 2 opens and closes the shutter curtain 1 by expanding and contracting the shutter curtain 1 in the vertical direction V. The opening and closing mechanism 2 has a belt unit 20 and a winding mechanism 21.

[0032] <Belt section> 1, the belt portion 20 starts from a point above the shutter curtain 1 and hangs down in the vertical direction V while passing through a plurality of separation regions 104. The lower end of the belt portion 20 engages with a movable frame portion 10A located below the plurality of frame portions 10.

[0033] In this embodiment, as shown in FIG. 3(A), the belt portion 20 has a front belt piece 20F that hangs down in the vertical direction V from the front DF side of the shutter curtain 1 (the left side of the shutter curtain 1 in FIG. 3(A)) and engages with the movable frame portion 10A, and a rear belt piece 20B that hangs down in the vertical direction V from the rear DB side of the shutter curtain 1 (the right side of the shutter curtain 1 in FIG. 3(A)) and engages with the movable frame portion 10A. As shown in FIG. 2(A), the front belt piece 20F is disposed at a position shifted (offset position) in the front direction DF from the frame center position M. Also, the rear belt piece 20B is disposed at a position shifted (offset position) in the rear direction DB from the frame center position M.

[0034] The front belt piece 20F and the rear belt piece 20B are continuous near the movable frame part 10A (here, on the bottom surface 10D side). That is, the front belt piece 20F and the rear belt piece 20B are configured as a single belt member. More specifically, the belt part 20 wraps around from the front surface DF side to the bottom surface 10D of the movable frame part 10A, passes in the curtain thickness direction D, and wraps around to the back surface DB side of the shutter curtain 1. The belt part 20 slidably contacts (engages) with the bottom surface 10D.

[0035] The upper end side of the front belt piece 20F is connected to the winding mechanism 21 above the shutter curtain 1 so as to be able to be wound up. The upper end side of the rear belt piece 20B is also connected to the winding mechanism 21 above the shutter curtain 1 so as to be able to be wound up. That is, in this embodiment, both ends of the belt part 20 are simultaneously wound up by the winding mechanism 21. However, the present invention is not limited to this, and one end side of the belt part 20 may be wound up by the winding mechanism 21, and the other end side may be fixed upward.

[0036] In this embodiment, the belt portion 20 slidably engages with the lowermost surface of the movable frame portion 10A. Even if a difference in the winding amount occurs due to a difference in circumference of the winding pulley 212 when the front belt piece 20F and the rear belt piece 20B are wound by the winding mechanism 21, the sliding (movement) of this lowermost surface autonomously adjusts the lengths of the front belt piece 20F and the rear belt piece 20B. As shown in FIG. 3(B), a friction-reducing material 10E that reduces friction between the belt portion 20 and the movable frame portion 10A can be provided at the engagement portion with the belt portion 20. Furthermore, as shown in FIG. 3(C), at least one rotating body 10F such as a pulley or roller (two rotating bodies 10F in this embodiment) can be provided at the engagement portion with the belt portion 20 on the movable frame portion 10A. By configuring the engagement portion of the movable frame portion 10A with a friction-reducing material 10E or a rotating body 10F, resistance is reduced when the movable frame portion 10A (bottom surface 10D) and the belt portion 20 move relative to each other. One example of the friction-reducing material 10E is a fluororesin (PTFE). While the case where the bottom surface 10D of the movable frame portion 10A and the belt portion 20 engage is illustrated here, the present invention is not limited to this. As shown in FIGS. 3(D) and 3(E), an area 10G or a rotating body 10F through which the belt portion 20 passes in the curtain thickness direction D may be provided inside or on top of the movable frame portion 10A.

[0037] 2 and 3, when the shutter curtain 1 is viewed from the side, the belt portion 20 is located between the frame center position M and the sheet portion 11. In other words, the sheet portion 11 is located further from the frame center position M than the belt portion 20. More specifically, the belt portion 20 is sandwiched between the frame portion 10 and the sheet portion 11.

[0038] As shown in Fig. 1, a plurality of belt portions 20 are arranged in parallel in the curtain width direction W, but this is not limited to this and there may be only one. Note that while the present embodiment illustrates the case where a band-shaped belt portion 20 extending in the vertical direction is arranged, the present invention is not limited to this and may be a string-shaped member such as a wire. In the present invention, these belt-shaped and string-shaped members can be collectively defined as a hanging portion.

[0039] <Take-up mechanism> The winding mechanism 21 will be described with reference to Figs. 1 to 3. The winding mechanism 21 winds and unwinds the belt portion 20 above the shutter curtain 1. As shown in Figs. 1 and 3, the winding mechanism 21 has a rotation source 210 such as a motor, a rotation shaft 211 that rotates by the rotation source 210, a winding pulley 212 that is fixed to the rotation shaft 211 and rotates together with the rotation shaft 211 to wind or unwind the belt portion 20, a first guide pulley 213A that guides the belt portion 20 (front belt piece 20F) to the front surface DF of the shutter curtain 1, and a second guide pulley 213B that guides the belt portion 20 (rear belt piece 20B) to the rear surface DB of the shutter curtain 1. The winding pulley 212, the first guide pulley 213A, and the second guide pulley 213B are provided for each belt portion 20.

[0040] When the take-up pulley 212 rotates in the forward direction together with the rotary shaft 211 due to the rotation of the rotation source 210, the take-up pulley 212 takes up the belt portion 20 (front belt piece 20F and rear belt piece 20B), and when the take-up pulley 212 rotates in the reverse direction together with the rotary shaft 211, the take-up pulley 212 unwinds the belt portion 20 (front belt piece 20F and rear belt piece 20B). As a result, the position of the movable frame portion 10A in the up-down direction V is changed. Then, as the position of the movable frame portion 10A is changed in the up-down direction V, the positions of the remaining frame portions 10 are changed in the up-down direction V as if they are pushed up by this movable frame portion 10A.

[0041] Specifically, when the shutter curtain 1 is in the closed state, as the retraction mechanism 21 retracts the belt portion 20, the movable frame portion 10A rises and approaches the adjacent first frame portion 10-1, as shown in FIG. 4(A). Then, as shown in FIG. 4(B), the movable frame portion 10A contacts the first frame portion 10-1 and pushes up the first frame portion 10-1. At this time, the first sheet portion 11-1 between the movable frame portion 10A and the adjacent first frame portion 10-1 bends more and more as they approach each other. Then, when the movable frame portion 10A contacts the first frame portion 10-1, the sheet portion 11A is folded approximately in two.

[0042] As the movable frame portion 10A and the first frame portion 10-1 rise together, the first frame portion 10-1 approaches the adjacent second frame portion 10-2 on the upper side. Then, as shown in FIG. 5A, the first frame portion 10-1 contacts the second frame portion 10-2 and pushes up the second frame portion 10-2. As the movable frame portion 10A rises, the first frame 10-1, the second frame 10-2, the third frame 10-C, the fourth frame 10-4, and the fifth frame 10-5 are pushed up in order, until the fifth frame 10-5 comes into contact with the sixth frame portion 10-6 (the uppermost frame portion) and stops. The second to sixth sheet portions 11-2 to 11-6, located between the first frame 10-1 and the sixth frame 10-6, are folded in two in the same manner as the first sheet portion 11-1.

[0043] In this manner, when the first to fifth frame portions 10-1 to 10-5 are pushed up by the movable frame portion 10A, the shutter curtain 1 is eventually contracted in the vertical direction V, as shown in Figure 5(B), and the shutter curtain 1 is in an open state.

[0044] On the other hand, when the belt portion 20 is unwound by the winding mechanism 21 while the shutter curtain 1 is in the open state, the first to fifth frame portions 10-1 to 10-5 descend together with the movable frame portion 10A, as shown in FIGS. 6(A) and 6(B). Then, starting from the upper frame portion 10, the distance between adjacent frame portions 10 increases, and the folded sheet portion 11 deforms to become taut. In this way, when the movable frame portion 10A moves to the lowest position, the first to fifth frame portions 10-1 to 10-5 are suspended by the second to sixth sheet portions 11-2 to 11-6. As a result, the shutter curtain 1 reaches a state stretched in the vertical direction V (closed state).

[0045] <Guide mechanism> The guide mechanism 3 will be described with reference to Figures 1 and 7. The guide mechanism 3 cooperates with the opening / closing mechanism 2 to guide the frame main body 101 in the up-down direction V. Specifically, the guide mechanism 3 has a moving part 30 and a guide part 31, as shown in Figure 7(A).

[0046] <Moving section> As shown in Fig. 1, the moving units 30 are provided on both ends of the frame main body 101 in the curtain width direction W. The moving units 30 engage with guide units 31, which will be described later. As shown in Fig. 7(A), the moving units 30 have a first wheel mechanism 300 and a second wheel mechanism 301. The first wheel mechanism 300 has a plurality of (four in this embodiment) first wheel units 300A and a first wheel support unit 300B that rotatably supports the first wheel units 300A via a plurality of (four in this embodiment) first wheel shafts 300C.

[0047] The first wheel support portion 300B is fixed to an end portion 101B of the frame main body portion 101 in the curtain width direction W. The central axis of the first wheel axle 300C is parallel to the curtain width direction W. Each of the multiple first wheel axles 300C rotatably supports a first wheel portion 300A.

[0048] As shown in FIG. 7(B), when the four first wheel sections 300A are designated as first wheel sections 300A1, 300A2, 300A3, and 300A4, the first wheel section 300A1 and the first wheel section 300A2 are arranged parallel to each other in the curtain thickness direction D. The first wheel section 300A3 and the first wheel section 300A4 are arranged parallel to each other in the curtain thickness direction D. The first wheel section 300A1 and the first wheel section 300A3 are arranged parallel to each other in the vertical direction V. The first wheel section 300A2 and the first wheel section 300A4 are arranged parallel to each other in the vertical direction V.

[0049] As shown in Figures 7(A) and (B), the second wheel mechanism 301 has multiple (two in this embodiment) second wheel units 301A and second wheel support units 301B that rotatably support the second wheel units 301A via multiple (two in this embodiment) second wheel axles 301C.

[0050] The second wheel support portion 301B is fixed to the end portion 104A of the frame main body portion 101 in the curtain width direction W or the first wheel support portion 300B. The central axis of the second wheel axle 301C is parallel to the curtain thickness direction D. Each of the multiple second wheel axles 301C rotatably supports the second wheel portion 301A at a position farther from the end portion 101B of the frame main body portion 101 in the curtain width direction W than each first wheel portion 300A. The two second wheel portions 301A are arranged to face each other in the curtain thickness direction D.

[0051] <Information Department> 7(A), the guide section 31 has an H-shaped structure 310 whose cross section perpendicular to the vertical direction V is H-shaped. The H-shaped structure 310 extends in the vertical direction V. The H-shaped structure 310 has a first plate-shaped portion 311 and a second plate-shaped portion 312 that are arranged in parallel with a gap in the curtain width direction W so that their flat surfaces face each other, and a third plate-shaped portion 313 that is connected between the first plate-shaped portion 311 and the second plate-shaped portion 312.

[0052] The first plate-shaped portion 311 is closer to the end 101B of the frame main body 101 than the second plate-shaped portion 312 in the curtain width direction W. A pair of side edges 311A ​​extending in the up-down direction V of the first plate-shaped portion 311 engage with the roller surfaces of the first wheel portions 300A1, 300A2, 300A3, and 300A4. In other words, the first plate-shaped portion 311 is sandwiched between the first wheel portion 300A1 and the first wheel portion 300A2, and between the first wheel portion 300A3 and the first wheel portion 300A4. A small first gap (first play) is provided between the pair of side surfaces 311A ​​and the first wheel portions 300A1, 300A2, 300A3, and 300A4. This allows the first wheel portions 300A1, 300A2, 300A3, and 300A4 to travel in the up-down direction V along the pair of side surfaces 311A. Therefore, even if the frame main body 101 attempts to move in the curtain thickness direction D, it can move up to the first gap (play), but if it moves beyond that, the first wheel portions 300A1, 300A2, 300A3, and 300A4 will interfere with the first plate-shaped portion 311, and the movement of the frame main body 101 in the curtain thickness direction D is restricted.

[0053] 7(A), the H-shaped structure 310 has two groove regions 320 surrounded by the first plate-shaped portion 311, the second plate-shaped portion 312, and the third plate-shaped portion 313. Each second wheel portion 301A is disposed in each groove region 320. Each second wheel portion 301A has a second gap (second play) between it and the first plate-shaped portion 311, the second plate-shaped portion 312, and the third plate-shaped portion 313. This allows each second wheel portion 301A to travel in the up-down direction V along the groove region 320. As a result, even if the frame main body 101 attempts to move in the curtain width direction W, it can move up to the second gap (second play). However, if it moves beyond that, the second wheel portion 301A will interfere with the first plate-shaped portion 311 or the second plate-shaped portion 312, and therefore movement of the frame main body 101 in the curtain width direction W is limited.

[0054] <Positional relationship between belt and seat> As a comparative example, consider a shutter device in which the belt portion 20 is suspended so as to pass through the frame center position M of the frame portion 10 in the curtain thickness direction D, as shown in FIG. 8(A). In this shutter device, if a strong wind E blows from the front side of the shutter curtain 1 while the shutter curtain 1 is opening or closing, the bent sheet portion 11 enters the adjacent frame space R, approaching the frame center position M. As a result, the folded sheet portion 11 in the adjacent frame space R comes into contact with the belt portion 20 and moves relative to it. In this case, the folded portion of the sheet portion 11 may be damaged due to local friction with the belt portion 20. Furthermore, the sheet portion 11 may be damaged by the load when it is sandwiched between the upper and lower frame portions 10.

[0055] On the other hand, in this embodiment, as shown in Fig. 8(B), when the seat portion 11 is bent by a strong wind E or the like and tries to enter the adjacent frame space R, it interferes with the belt portion 20 that is hanging down close to the seat portion 11. As a result, the seat portion 11 can be prevented from entering the adjacent frame space R. As a result, the seat portion 11 can also be prevented from being pinched between the upper and lower frame portions 10.

[0056] In the above embodiment, the belt portion 20 is disposed outside the outer edge 103 of the frame main body 101. However, the present invention is not limited to this. For example, as shown in FIG. 9A, the belt portion 20 in the curtain thickness direction D may be closer to the frame center position M than the outer edge 103 of the frame main body 101. In this case, the belt portion 20 contacts the inner peripheral surface 105 of the frame body 101A. Even in this case, as long as the belt portion 20 is offset from the frame center position M, the sheet portion 11 can be prevented from entering the adjacent frame space R. As shown in FIG. 9B, when the offset distance from the frame center position M to the sheet portion 11 is defined as Ma and the offset distance from the frame center position M to the belt portion 20 is defined as Mb, it is preferable that Mb≧(1 / 2)×Ma be satisfied, and more preferably, Mb≧(2 / 3)×Ma be satisfied. The closer the belt portion 20 is to the sheet portion 11, the greater the interference effect of the belt portion 20. Therefore, when the seat portion 11 is fixed to the outer edge 103 of the frame main body portion 101 , it is preferable that the belt portion 20 be disposed in the vicinity of the outer edge 103 .

[0057] Second Embodiment A shutter device according to a second embodiment of the present invention will be described below with reference to Figure 10. The shutter device according to this embodiment is similar to that of the first embodiment except for the configuration of the opening and closing mechanism 2. In the opening and closing mechanism 2 of this embodiment, the belt portion 20 independently has a front belt piece 20F arranged on the front surface DF side of the shutter curtain 1, and a rear belt piece 20B arranged on the rear surface DB side of the shutter curtain 1. Furthermore, in the opening and closing mechanism 2 of this embodiment, the retraction mechanism 21 independently has a front retraction mechanism 21F that retracts and unretracts the front belt piece 20F, and a rear retraction mechanism 21B that retracts and unretracts the rear belt piece 20B.

[0058] The front belt piece 20F and the rear belt piece 20B hang down from above the shutter curtain 1. The upper end of the front belt piece 20F is fixed to the front winding mechanism 21F so as to be retractable, and the lower end of the front belt piece 20F is fixed to the movable frame part 10A. The upper end of the rear belt piece 20B is fixed to the rear winding mechanism 21B so as to be retractable, and the lower end of the rear belt piece 20B is fixed to the movable frame part 10A. However, unlike the first embodiment, the front belt piece 20F and the rear belt piece 20B are not connected to each other at their lower ends, but are separate.

[0059] The front winding mechanism 21F and the rear winding mechanism 21B each have at least a rotation source 210 such as a motor described in the first embodiment, a rotation shaft 211 that is rotated by the rotation source 210, and a winding pulley 212 that is fixed to the rotation shaft 211 and rotates together with the rotation shaft 211 to wind or unwind the belt unit 20. The rotation shaft of the winding pulley 212 of the front winding mechanism 21F is offset toward the front surface DF from the frame center position M. Furthermore, the rotation shaft of the winding pulley 212 of the rear winding mechanism 21G is offset toward the rear surface DB from the frame center position M. Therefore, in this embodiment, the first guide pulley 213A and the second guide pulley 213B of the first embodiment can be omitted.

[0060] Third Embodiment A shutter device according to a third embodiment of the present invention will be described below with reference to Figure 11. The shutter device according to this embodiment differs from that of the first embodiment in the configuration of the opening and closing mechanism 2. In the opening and closing mechanism 2 of this embodiment, a belt portion 20 hangs down in the vertical direction V so as to pass through the frame center position M of each frame portion 10. The upper end of the belt portion 20 is fixed to a winding mechanism 21 so as to be able to be wound up, and the lower end of the belt portion 20 is fixed to a movable frame portion 10A. The winding mechanism 21 also has a configuration similar to that of the first embodiment and the first winding mechanism 21A (second winding mechanism 21B) of the second embodiment.

[0061] In this embodiment, a restricting member 14 is disposed to connect to both of the vertically adjacent frame portions 10 in order to prevent the bent seat portion 11 from entering the adjacent frame space R. The restricting member 14 is disposed in a location close to the seat portion 11 by being offset from the frame center position M toward the seat portion 11. More specifically, the restricting member 14 is connected to the outer edge of each of the adjacent frame portions 10 or in the vicinity thereof. The restricting member 14 is then oriented to extend in the vertical direction V.

[0062] The distance between the regulating members 14 varies depending on the distance in the up-down direction V between adjacent frame portions 10. In this embodiment, the regulating members 14 are folded in the curtain width direction W by three hinges, allowing them to expand and contract in the up-down direction V without changing their position in the curtain thickness direction D. Note that the regulating members of the present invention are not limited to this expandable structure, and various structures can be used as long as they are expandable in the up-down direction V without changing their position in the curtain thickness direction D. For example, springs, bellows members, etc. may also be used.

[0063] The sheet portion 11 is disposed at a position farther from the frame center position M of the frame portion 10 than the restricting member 14 in the curtain thickness direction D. As a result, even if the sheet portion 11 receives an external force in the direction toward the adjacent frame space R, the sheet portion 11 comes into contact with the restricting member 14 and is restricted from entering the adjacent frame space R.

[0064] The shutter device of the present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the spirit of the present invention. Naturally, all suitable combinations of the elements of the above-described embodiments are also included in the scope of the present invention. [Explanation of symbols]

[0065] 1. Shutter Curtain 2 Opening and closing mechanism 3 Guide mechanism 10 Frame section 10A Movable frame part 10D Bottom of the movable frame 10E pulley 11 Seat section 11F front seat area 11B Rear seat section 12 Interior Space 14 Regulatory elements 20 Belt section 20F Front belt section 20B Rear belt section 21 Winding mechanism 21F Front winding mechanism 21B Rear winding mechanism 30 Moving Part 31 Information Department 101 Frame body 101A Frame 101B End of frame body 102 Reinforcement frame part 103 Outer Edge 104 Detached Area 104A, 104B Ends of flexure area 210 Rotation source 211 Rotating shaft 212 Winding pulley 213A First guide pulley 213B Second guide pulley 300 First wheel mechanism 300A,300A1,300A2,300A3,300A4 First wheel part 300B First wheel support part 300C first wheel axle 301 Second wheel mechanism 301A Second wheel section 301B Second wheel support part 301C 2nd wheel axle 310 H-shaped structure 311 First plate-shaped part 311A Side edge of first plate-shaped part 312 Second plate-shaped part 313 Third plate-like part 320 groove area D Curtain thickness direction H Vertical direction M Frame center position R adjacent frame space W Curtain width direction

Claims

1. A shutter curtain configured to be expandable in the vertical direction; an opening / closing mechanism that opens and closes the shutter curtain by expanding and contracting the shutter curtain; Equipped with The shutter curtain is A plurality of frame sections are arranged at intervals in the vertical direction with their longitudinal direction parallel to the width direction of the shutter curtain (hereinafter referred to as the curtain width direction), and their positions in the vertical direction are changeable; a movable frame portion disposed below the plurality of frame portions and moved in the up and down direction by the opening and closing mechanism; a sheet portion connected to both of the frame portions adjacent in the vertical direction, covering an area between the adjacent frame portions, and deforming so as to bend when the adjacent frame portions approach each other in the vertical direction by the opening and closing mechanism, and deforming so as to be taut when the adjacent frame portions move away from each other; and The opening and closing mechanism is a belt- or string-like hanging portion that hangs down in the vertical direction and engages with the movable frame portion; a winding mechanism that winds up the hanging portion to raise the movable frame portion in the vertical direction, and pushes up the plurality of frame portions in the vertical direction and closer to each other via the movable frame portion, and that unwinds the hanging portion to lower the movable frame portion in the vertical direction and lowers the plurality of frame portions in the vertical direction to move away from each other; and When the direction perpendicular to both the vertical direction and the curtain width direction is defined as the thickness direction of the shutter curtain (hereinafter referred to as the curtain thickness direction), the sheet portion is disposed at a position shifted to one side from a center position of the frame portion in the thickness direction of the curtain, the hanging portion hangs down in the up-and-down direction at a location shifted to the one side from the central position, The sheet portion is disposed farther from the central position than the hanging portion in the thickness direction of the curtain. Shutter device.

2. The hanging portion is disposed between an outer edge of the frame portion and the sheet portion located outside the outer edge in the thickness direction of the curtain. The shutter device according to claim 1 .

3. the sheet portion has a separation region in a partial section in the curtain width direction of a connection range where the sheet portion is connected to the frame portion, the separation region being separated from the frame portion; The hanging portion passes through the separation region in the vertical direction. The shutter device according to claim 1 .

4. The hanging portion is disposed between the outer edge of the frame portion and the central position in the thickness direction of the curtain. The shutter device according to claim 1 .

5. The hanging portion is a first hanging piece that hangs down in the vertical direction at a location shifted to the one side from the central position; a second hanging piece that hangs down in the vertical direction at a position shifted from the central position to the other side opposite to the one side. The shutter device according to claim 1 .

6. a lower end of the first hanging piece and a lower end of the second hanging piece being continuous with each other in the vicinity of the movable frame; The shutter device according to claim 5 .

7. The opening and closing mechanism is The first hanging piece and the second hanging piece are both wound up. The shutter device according to claim 5 .

8. The sheet portion of the shutter curtain is a first sheet piece disposed at a position shifted to the one side from the center position of the frame portion; a second sheet piece disposed at a position shifted from the center position of the frame portion to the other side opposite the one side, the first sheet piece is disposed on the one side farther from the central position than the first hanging piece; The second sheet piece is located on the other side farther from the central position than the second hanging piece. The shutter device according to any one of claims 5 to 7.

9. A shutter curtain configured to be expandable in the vertical direction; an opening / closing mechanism that opens and closes the shutter curtain by expanding and contracting the shutter curtain in the vertical direction; Equipped with The shutter curtain is A plurality of frame sections are arranged at intervals in the vertical direction with their longitudinal direction parallel to the width direction of the shutter curtain (hereinafter referred to as the curtain width direction), and their positions in the vertical direction are changeable; a movable frame portion disposed below the plurality of frame portions and moved in the up and down direction by the opening and closing mechanism; a sheet portion that is connected to both of the frame portions that are adjacent in the vertical direction, covers the area between the adjacent frame portions, and is deformed so as to bend when the adjacent frame portions approach each other in the vertical direction by the opening and closing mechanism, and is deformed so as to be taut when the adjacent frame portions move away from each other; a restricting member connected to both of the frame portions adjacent to each other in the vertical direction, the distance between the frame portions in the vertical direction being variable depending on the distance between the adjacent frame portions in the vertical direction; and The opening and closing mechanism is a belt- or string-like hanging portion that hangs down in the vertical direction and engages with the movable frame portion; a winding mechanism that winds up the hanging portion to raise the movable frame portion in the vertical direction, and pushes up the remaining plurality of frame portions in the vertical direction via the movable frame portion to bring them closer to each other, and that unwinds the hanging portion to lower the movable frame portion in the vertical direction, and lowers the plurality of frame portions in the vertical direction to move them away from each other; and When the direction perpendicular to both the vertical direction and the curtain width direction is defined as the thickness direction of the shutter curtain (hereinafter referred to as the curtain thickness direction), the sheet portion is disposed at a position shifted to one side from a center position of the frame portion in the thickness direction of the curtain, the restricting member is connected to the frame portion at a location shifted to the one side from the central position, The sheet portion is disposed farther from the central position than the regulating member in the thickness direction of the curtain. Shutter device.

Images