Sheet shutter device

Abstract

To easily adjust the open width of fodder and to improve maintainability of a long member in a shutter case.SOLUTION: A sheet shutter device 1 guided by right and left guide rails 14 erected at both ends of an opening 2 of a building in a width direction to be able to open / close the opening 2 comprises: a drive roll 60 and a winding roll 24 (drive unit) provided in a shutter case 18; a sheet 10 which has a width extending between the guide rails 14 and which can be wound and delivered with respect to the shutter case 18; fodder 26 provided in the bottom of the shutter case 18 and constituting at least a part of an exit 30 of the sheet 10; and a cover 28 configured to be attachable / detachable to / from the shutter case 18, cover a part of the fodder 26 to form the exit 30 of the sheet 10, and be able to adjust the width of the exit 30.SELECTED DRAWING: Figure 2

Description

[Technical Field]

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

[0002] Various sheet shutter devices have been disclosed (see Patent Documents 1 to 3). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2006-336317 [Patent Document 2] Japanese Patent Application Laid-Open No. 2000-8746 [Patent Document 3] Japanese Patent Application Publication No. 11-76443 Summary of the Invention [Problem to be solved by the invention]

[0004] In conventional sheet shutter devices, after installation, it is sometimes necessary to add, for example, a pipe-shaped reinforcing body to the bottom of the sheet to prevent the sheet from sagging due to wind, etc. This reinforcing body is housed in the shutter case when the sheet is wound up, so it is necessary to adjust the width of the sheet entrance and exit in the shutter case.

[0005] However, conventional sheet shutter devices did not allow for adjustment of the width of the entrance and exit, making it difficult to accommodate requests for additional reinforcement.

[0006] Furthermore, reinforcing members are arranged at a fixed pitch inside the shutter case, and these reinforcing members surround the ceiling, front, and bottom of the shutter case. Therefore, when performing maintenance on long parts such as sheets or sheet winding drums, it was necessary to either remove the shutter case or temporarily cut the reinforcing members and then return them to their original positions after maintenance.

[0007] The present invention aims to make it possible to easily adjust the opening width of a lintel and to improve the ease of maintenance of long parts inside a shutter case. [Means for solving the problem]

[0008] The sheet shutter device of the first aspect is a sheet shutter device that is guided by left and right guide rails that are erected at both widthwise ends of an opening in a building and can open and close the opening, and includes a drive unit provided within the shutter case, a sheet that has a width extending between the guide rails and can be wound into and unwound from the shutter case by the drive unit, a lintel that is provided at the bottom of the shutter case and forms at least a part of the entrance and exit for the sheet, and a lintel cover that is detachable from the shutter case and blocks a part of the lintel to form the entrance and exit for the sheet, and is configured to allow the width of the entrance and exit to be adjusted.

[0009] In this sheet shutter device, a lintel is provided at the bottom of the shutter case, and a portion of the lintel is covered by a lintel cover to form an entrance / exit for the sheet. The lintel cover allows the entrance / exit for the sheet to be adjusted, so the width of the entrance / exit can be easily adjusted depending on whether or not a reinforcing body is attached to the bottom of the sheet, or whether or not the reinforcing body is added later. In addition, by removing the lintel cover from the shutter case, maintenance of long parts inside the shutter case can be easily performed through the lintel.

[0010] The second aspect is a sheet shutter device according to the first aspect, which has a guide roller that is removably mounted within the shutter case through the lintel and is configured so that the distance between the sheet and the guide roller can be adjusted, and the lintel cover is removably mounted on the shutter case from below the guide roller.

[0011] In this sheet shutter device, the guide roller can guide the sheet when winding and unwinding. In addition, the distance between the guide roller and the sheet can be adjusted depending on whether a reinforcing member is attached to the bottom of the sheet or if such a reinforcing member is added later.

[0012] In a third aspect, in the sheet shutter device according to the second aspect, the guide roller has a guide roller body having a roller and a base that supports the roller for rotation, and a bracket interposed between the guide roller body and the shutter case, and the bracket is capable of selecting between a first mounting form and a second mounting form for the guide roller body, and is also capable of selecting between a first mounting form and a second mounting form for the installation form relative to the shutter case, and the distance between the roller and the sheet changes when the first mounting form and the first mounting form are selected and when the second mounting form and the second mounting form are selected.

[0013] In this sheet shutter device, the first and second mounting configurations can be selected as the mounting configuration of the guide roller body relative to the bracket, and the first and second mounting configurations can be selected as the mounting configuration of the bracket relative to the shutter case. The distance between the roller and the sheet changes depending on whether the first and first mounting configurations are selected or the second and second mounting configurations are selected. Therefore, the distance between the guide roller and the sheet can be easily adjusted depending on whether a reinforcing body is attached to the bottom of the sheet, whether the reinforcing body is added later, etc.

[0014] In a fourth aspect, in the sheet shutter device according to the third aspect, the separation distance in the first mounting configuration is longer than the separation distance in the second mounting configuration, and the first mounting configuration is selected when an attachment to the sheet protrudes toward the roller, and the second mounting configuration is selected when the attachment has no effect on the roller.

[0015] In this sheet shutter device, the first mounting configuration is selected when an attachment to the sheet protrudes toward the roller. This reduces interference between the roller and the attachment. The second mounting configuration is selected when the attachment has no effect on the roller. This allows the roller to be closer to the sheet, making it easier to reduce sheet deflection. [Effects of the Invention]

[0016] According to the present invention, the opening width of the lintel can be easily adjusted and the maintainability of long parts inside the shutter case can be improved. [Brief explanation of the drawings]

[0017] [Figure 1] 1 is a perspective view showing a sheet shutter device according to an embodiment of the present invention; [Figure 2] 10 is a cross-sectional view showing the inside of the shutter case in which the guide roller is in the first mounting configuration and the first installation configuration. FIG. [Figure 3] FIG. 2 is a perspective view showing the inside of the shutter case as viewed obliquely from above. [Figure 4] 1 is a perspective view showing the inside of the shutter case as viewed obliquely from below. FIG. [Figure 5] FIG. 10 is a partially cutaway perspective view showing the attachment state of the guide roller and the lintel cover in the first attachment configuration and the first installation configuration. [Figure 6] FIG. 10 is a partially cutaway perspective view showing the attachment state of the guide roller and the lintel cover in the first attachment configuration and the first installation configuration. [Figure 7] FIG. 2 is a perspective view showing a first mounting mode of the bracket and the guide roller. [Figure 8] FIG. 2 is a front view showing a first mounting configuration of the bracket and the guide roller. [Figure 9] FIG. 2 is a perspective view showing a bracket corresponding to the first installation form. [Figure 10] 10 is a cross-sectional view showing the inside of the shutter case when the guide roller is in the second installation configuration and the second installation configuration. FIG. [Figure 11]FIG. 10 is a partially cutaway perspective view showing the attachment state of the guide roller and the lintel cover in the second attachment configuration and the second installation configuration. [Figure 12] FIG. 10 is a perspective view showing a second mounting mode of the bracket and the guide roller. [Figure 13] FIG. DETAILED DESCRIPTION OF THE INVENTION

[0018] Hereinafter, an embodiment of the present invention will be described with reference to the drawings. Note that arrow H shown in the drawings indicates the up-down direction (vertical direction) of the sheet shutter device 1, arrow W indicates the width direction (horizontal direction) of the sheet shutter device 1, and arrow L indicates the depth direction (horizontal direction) of the sheet shutter device 1. In the following description, the direction indicated by arrow W in FIG. 1 will be referred to as the right side of the sheet shutter device 1, and the direction opposite to the direction indicated by arrow W will be referred to as the left side of the sheet shutter device 1. In addition, in the following description, the direction indicated by arrow L in FIG. 1 will be referred to as the rear of the sheet shutter device 1, and the direction opposite to the direction indicated by arrow L will be referred to as the front of the sheet shutter device 1.

[0019] Furthermore, the left-right direction of the sheet shutter device 1 may be referred to as the "width direction," and the front-to-rear direction of the sheet shutter device 1 may be referred to as the "shutter depth direction." Note that the above left, right, front, and rear are directions defined for the convenience of explanation, and the configuration of the sheet shutter device 1 is not limited to these directions.

[0020] (Overall composition) 1 and 2, the sheet shutter device 1 is an opening / closing device that is guided by left and right guide rails 14 attached to an opening 2 of a building and can open and close the opening 2. The sheet shutter device 1 includes a winding roll 24 and a driving roll 60 as an example of a driving unit, a sheet 10, a lintel 26, and a lintel cover 28. The sheet shutter device 1 also includes a frame 12 and a contact block 80. The frame 12, the winding roll 24, the sheet 10, the driving roll 60, and the contact block 80 are basically symmetrical in a front view with respect to a center line CL in the width direction (hereinafter referred to as the "width direction") of the sheet shutter device 1. The "width direction" also corresponds to the width direction of the opening 2. The opening 2 is, for example, an entrance to a room such as a freezer, a refrigerator, or a warehouse. Hereinafter, closing the opening 2 will sometimes be referred to as "closing," and opening the opening 2 will sometimes be referred to as "opening."

[0021] The sheet shutter device 1 may be applied to entrances and windows of buildings, etc., and can be applied to openings that are opened and closed 2. The openings 2 to which the sheet shutter device 1 is applied are specifically openings that are formed in the side walls of structures, etc., and that open laterally (laterally).

[0022] (Frame 12) The frame 12 comprises a pair of side frames 22 and a shutter case 18. The pair of side frames 22 each extend in the up-down direction (hereinafter referred to as the "up-down direction") of the sheet shutter device 1, and are arranged on both sides of an opening 2 such as a loading entrance in the width direction, at both ends of the sheet 10 in the width direction. The "up-down direction" also corresponds to the height direction of the opening 2 and the height direction of the sheet 10 when the opening 2 is closed.

[0023] The cross section of the side frame 22 cut in a direction perpendicular to its longitudinal direction has a U-shape with an opening on the inside in the shutter width direction (i.e., the side closer to the center line CL in the width direction of the sheet shutter device 1).

[0024] Furthermore, guide rails 14 (FIG. 2) extending in the vertical direction are disposed inside each of the pair of side frames 22. The pair of guide rails 14 guide the sheet 10 in the vertical direction so that the sheet 10 moves in the vertical direction. A cross section of the guide rail 14 cut in a direction perpendicular to its longitudinal direction is generally U-shaped with an opening on the inner side in the width direction. The inner side in the width direction is the side closer to the center line CL in the width direction of the sheet shutter device 1 in FIG. 1. The upper ends of the guide rails 14 and the side frames 22 are open upward. A guide block (not shown), for example, provided on the sheet 10 is supported inside the guide rail 14 so as to be movable in the vertical direction.

[0025] As shown in FIG. 1, the shutter case 18 is formed in a box shape and extends in the width direction so as to connect the upper ends of a pair of side frames 22. As shown in FIG. 2, a cross section of the shutter case 18 cut in a direction perpendicular to its longitudinal direction has a rectangular tubular shape extending from above the side frames 22 to one side (the right side in the figure) in the depth direction of the sheet shutter device 1 (hereinafter referred to as the "shutter depth direction"), and the interior of the shutter case 18 is hollow. A reinforcing member 20, for example, made of an angle bar, is arranged on the inner surface of the shutter case 18. The reinforcing member 20 may be provided at intervals at multiple locations in the longitudinal direction of the shutter case 18. Note that the reinforcing member 20 is not shown in FIGS. 3 and 4.

[0026] The shutter case 18 protrudes forward relative to the pair of side frames 22. A rear surface 18B of the shutter case 18 is fixed, for example, to a wall surface 16 at the upper edge of the opening 2. The interior of the shutter case 18 communicates with the interiors of the pair of side frames 22 and the pair of guide rails 14 through openings at the upper ends of the pair of side frames 22 and the upper ends of the pair of guide rails 14. Removable panels 62 are provided on both longitudinal ends of the shutter case 18. When the panels 62 are removed, an inspection hatch appears.

[0027] 2 to 4, a lintel 26, a lintel cover 28, and a guide roller 34 are provided at the bottom of the shutter case 18. The lintel 26 forms at least a part of the entrance / exit 30 for the sheet 10 and is an opening that can be used for maintenance of the sheet 10 and the winding roll 24 and drive roll 60, which are examples of a drive unit.

[0028] The lintel cover 28 is detachable from the shutter case 18, covers a portion of the lintel 26 to form an entrance 30 for the seat 10, and is configured to be adjustable in width. As shown in FIG. 13 , the lintel cover 28 is formed, for example, by bending a metal plate, and has a flat plate portion 28A and a vertical wall portion 28B. The flat plate portion 28A is provided with a through-hole 28C for fastening to a bracket 42 of the guide roller 34 (described later), and through-holes 28D1 and 28D2 for fastening to the bottom of the shutter case 18. The through-hole 28D1 is formed in a position closer to the vertical wall portion 28B than the through-hole 28D2.

[0029] By selecting through holes 28D1, D2, the position of lintel cover 28 in the depth direction can be adjusted, and the width of doorway 30 can be adjusted.

[0030] A folded portion 28E is formed on the upper edge of the vertical wall portion 28B. At the attachment position of the guide roller 34, the folded portion 28E is omitted and a notch 28K is provided. As described above, this notch 28K prevents interference between the vertical wall portion 28B and a base portion 38 of the guide roller 34, which will be described later.

[0031] 2 to 4, the guide roller 34 is detachably mounted within the shutter case 18 via a lintel 26, and is configured so that the distance between the guide roller 34 and the sheet 10 can be adjusted. In FIGS. 5 to 8, the guide roller 34 has a roller 36, a guide roller body 40 equipped with a base 38 that supports the roller 36 for rotation, and a bracket 42 interposed between the guide roller body 40 and the shutter case 18. A plurality of guide rollers 34 may be provided in the longitudinal direction of the shutter case 18. The guide rollers 34 prevent the sheet 10 from being displaced rearward within the shutter case 18 (toward the drive roll 60) when the sheet 10 is wound or unwound.

[0032] The roller 36 is rotatably supported by a shaft 44, both ends of which are supported by a base 38. The base 38 is formed, for example, in a U-shape in plan view, and supports the shaft 44 with opposing side wall portions 38A. Ends of the side wall portions 38A opposite the roller 36 are integrally joined by a front wall portion 38B. Mounting portions 38B that protrude outward in the width direction are provided on the lower edges of the side wall portions 38A.

[0033] The bracket 42 allows selection between a first and a second mounting configuration for the mounting configuration of the guide roller main body 40, and also allows selection between a first and a second mounting configuration for the installation configuration relative to the shutter case 18. When the first mounting configuration is selected for the bracket 42, the mounting configuration of the guide roller main body 40 becomes the first mounting configuration. When the second mounting configuration is selected for the bracket 42, the mounting configuration of the guide roller main body 40 becomes the second mounting configuration.

[0034] The distance between the roller 36 and the sheet 10 changes depending on whether the first attachment configuration and the first installation configuration are selected or the second attachment configuration and the second installation configuration are selected. Figures 2 to 8 show the first attachment configuration and the first installation configuration. In this configuration, since a reinforcing member 102 is provided on the sheet 10 as described below, the distance between the roller 36 and the sheet 10 is set large to suppress interference between the reinforcing member 102 and the guide roller 34.

[0035] 10 to 12 show a second mounting configuration and a second installation configuration. In this configuration, the sheet 10 is not provided with a reinforcing member, as will be described later, and therefore the distance between the roller 36 and the sheet 10 is set small.

[0036] That is, the separation distance in the first mounting configuration is longer than the separation distance in the second mounting configuration. The first mounting configuration is selected when an attachment (e.g., reinforcing member 102) of sheet 10 protrudes toward roller 36, and the second mounting configuration is selected when the attachment (e.g., reinforcing member 102) has no effect on roller 36.

[0037] 7 to 9, the bracket 42 has, for example, L-shaped wall portions 42A1 and 42A2, a mounting seat 42B2 formed by folding back from the edge of the wall portion 42A1, and a mounting seat 42B1 formed by folding back from the edge of the wall portion 42A2. The wall portion 42A1 is formed longer than the wall portion 42A2. Multiple through-holes 42C1 and 42C2 are formed at the intersections of the wall portions 42A1 and 42A2. In the illustrated example, the through-holes 42C1 and 42C2 at the widthwise ends of the bracket 42 are connected to each other and are formed as notches. In the center of the bracket 42, the through-hole 42C1 is a circular hole. Although not shown, the through-hole 42C2 at the center of the bracket 42 is also a circular hole.

[0038] In Fig. 9, mounting seats 42B1 and 42B2 are each provided with, for example, two screw holes 42D. These screw holes 42D are locations where screws 46 (Figs. 7 and 8) are fastened. Furthermore, wall portion 42A1 of bracket 42 is provided with a plurality of screw holes 42E. These screw holes 42E are locations where screws 48 (Figs. 7 and 8) are fastened in the first mounting configuration, and where screws 52 (Fig. 10) are fastened in the second mounting configuration. Mounting seat 42B1 is provided with a plurality of screw holes 42F. These screw holes 42F are locations where screws 48 (Fig. 12) are fastened in the second mounting configuration.

[0039] The guide roller main body 40 can be mounted by selecting either mounting seat 42B1 or mounting seat 42B2. The lengths of the wall portions 42A1 and 42A2 are different, so the distance between the guide roller 34 and the sheet 10 can be adjusted by changing the way the bracket 42 is mounted to the shutter case 18. As shown in the figure, when the wall portion 42A2 of the bracket 42 is mounted horizontally, the distance between the guide roller 34 and the sheet 10 becomes relatively long. This state is the first installation configuration, and the guide roller main body 40 is in the first mounting configuration.

[0040] In the first mounting configuration, the mounting portion 38B of the base 38 of the guide roller main body 40 is fixed to a mounting seat 42B1 of the bracket 42 with a screw 46. Also, the front wall portion 38C of the base 38 of the guide roller main body 40 is fixed to a wall portion 42A1 of the bracket 42 with a screw 48. This allows the mounting seat 42B1 and the wall portion 42A1 to bear the load input from the roller 36 to the base 38. As shown in FIG. 6, the wall portion 42A1 of the bracket 42 is fixed to a mounting portion 54 provided on the bottom of the shutter case 18 with a screw 50.

[0041] A vertical wall portion 66 formed by bending upward a bottom plate 64 of the shutter case 18 is interposed between the wall portion 42A1 and the mounting portion 54. The mounting portion 54 is attached to this vertical wall portion 56, for example.

[0042] 10 to 12, when the wall portion 42A1 of the bracket 42 is attached horizontally, the distance between the guide roller 34 and the seat 10 is shortened. This state is the second installation configuration, and the guide roller main body 40 is in the second attachment configuration.

[0043] In the second mounting configuration, the mounting portion 38B of the base 38 of the guide roller main body 40 is fixed to the mounting seat 42B2 of the bracket 42 with a screw 46. Also, the front wall portion 38C of the base 38 of the guide roller main body 40 is fixed to the first mounting seat 42B1 of the bracket 42 with a screw 48. This allows the mounting seats 42B2 and 42B1 to bear the load input from the roller 36 to the base 38. As shown in FIG. 10 , the wall portion 42A2 of the bracket 42 is fixed to the mounting portion 54 at the bottom of the shutter case 18 with a screw 50.

[0044] 2, 5, 6, 10, and 11, the lintel cover 28 can be attached to and detached from the shutter case 18 from below the guide roller 34. Specifically, the lintel cover 28 is fixed by a screw 52 across the bottom plate 64 of the shutter case 18 and the bracket 42 of the guide roller 34. In the first installation configuration shown in FIG. 2, of the two through holes 28D1, 28D2 (FIG. 13) in the lintel cover 28, the through hole 28D1 closer to the vertical wall portion 28B is used. This reduces the area over which the lintel cover 28 blocks the lintel 26. In the second installation configuration shown in FIG. 10, the through hole 28D2 farther from the vertical wall portion 28B is used. This increases the area over which the lintel cover 28 blocks the lintel 26.

[0045] 2 and 10, a guide roller 32 is provided on the inner surface of the rear surface 18B side of the shutter case 18. This guide roller 32 is provided on the opposite side of the guide roller 34 with the sheet 10 sandwiched between them. A plurality of guide rollers 32 may be provided in the longitudinal direction of the shutter case 18. The guide roller 32 prevents the sheet 10 from being displaced forward in the shutter case 18 (towards the wall surface 16) when the sheet 10 is wound up and unwound.

[0046] (winding roll 24) As shown in Fig. 2, the winding roll 24 is a roll that winds up the sheet 10, and is arranged inside the shutter case 18 on one side in the shutter depth direction. One end of the sheet 10 is attached to the winding roll 24. This one end is the upper end when the sheet 10 is in a state where it closes the opening 2 (hereinafter referred to as the "closed state").

[0047] The winding roll 24 extends in the width direction. In other words, the axial direction of the winding roll 24 is the width direction. Furthermore, the winding roll 24 is rotatably supported by a frame member (not shown). The winding roll 24 is biased by, for example, a biasing member (not shown) so as to rotate in a direction in which the sheet 10 is wound up (hereinafter referred to as the "winding direction"). In this configuration, a force in the winding direction is applied to the sheet 10 by the winding roll 24.

[0048] (Drive roll 60) 2, the drive roll 60 is disposed inside the shutter case 18, on the other side in the shutter depth direction, and above the pair of guide rails 14. A portion of the sheet 10 that is taken up by the take-up roll 24 or unwound from the take-up roll 24 is wound around the drive roll 60. The drive roll 60 is rotated in a forward direction and a reverse direction by the driving force of a motor (not shown).

[0049] The drive roll 60 extends in the width direction. In other words, the axial direction of the drive roll 60 is the width direction. Furthermore, the drive roll 60 is rotatably supported by a frame member 58. The drive roll 60 also includes a roll body extending in the width direction and a pair of gear members (not shown) attached to both ends of the roll body in the width direction. The gear members are made of, for example, metal, and have a plurality of gear teeth (not shown) aligned in the circumferential direction that engage with guide blocks (not shown) provided on both ends of the sheet 10.

[0050] (contact block 80) 2, the contact blocks 80 are arranged at the other side in the shutter depth direction and at both end portions in the shutter width direction inside the shutter case 18. Specifically, the contact blocks 80 are arranged opposite the gear member of the drive roll 60.

[0051] The contact block 80 is formed in an arc shape using a metal material (in this embodiment, made of zinc die-cast), and is attached to the frame member 58. In this configuration, when the guide block engaged with the gear member moves outward in the gear radial direction, it comes into contact with the contact block 80, thereby preventing further movement of the guide block. This maintains the engagement between the gear member and the guide block.

[0052] (Sheet 10) 1 and 2, the sheet 10 has a width extending between the left and right guide rails 14 (side frames 22), and can be wound into and unwound from the shutter case 18 by a drive roll 60 serving as a drive unit. The sheet 10 is guided by the left and right guide rails 14, and can open and close the opening 2. The sheet 10 may be provided with a transparent window 11 (FIG. 12).

[0053] (Buffer part 100) 1, 2, and 10, a buffer section 100 may be provided at the lower end of sheet 10 along the width direction of sheet 10. The buffer section 100 is, for example, a hollow section formed, for example, in a drop-shaped cross section. The buffer section 100 may be formed by rolling up a portion of the lower end of sheet 10, or may be formed of a hollow, flexible material similar to sheet 10 and attached to the lower end of sheet 10. Alternatively, the buffer section 100 may be formed by combining a portion of the lower end of sheet 10 with a separate member.

[0054] A reflective material 104 that reflects light may be provided in the buffer section 100 or in the vicinity of the buffer section 100. The reflective material 104 is formed, for example, in a continuous band shape across substantially the entire width of the sheet 10. The shape and arrangement of the reflective material 104 are not limited to this, and the reflective material 104 may be arranged intermittently or locally. The reflective material 104 may be provided on both the front and rear surfaces of the sheet 10, or on only one surface. When the sheet 10 is fully wound up, the reflective material 104 may be visible from diagonally below the shutter case 18. In other words, the position of the bottom end of the sheet 10 and the position of the reflective material 104 when the sheet 10 is fully wound up may be set so that the reflective material 104 is visible from the entrance / exit 30 when the sheet 10 is fully wound up.

[0055] (reinforcement body 102) 1 and 2, a reinforcing member 102 may be provided above the buffer section 100 in the sheet 10, along the width direction of the sheet 10. This reinforcing member 102 is provided, for example, at a position approximately 300 mm above the buffer section 100. When the opening 2 is closed, a storage section 108 is provided on the surface of the sheet 10 facing the shutter case 18. The reinforcing member 102 is stored in this storage section 108. The storage section 108 is formed by rolling up the material of the sheet 10 or a similar flexible sheet and fastening the upper edges of the sheet 10 to each other with, for example, screws 109. When the winding of the sheet 10 is complete, the reinforcing member 102 is arranged so as to be located within the shutter case 18 and before the drive roll 60 in the winding direction.

[0056] The reinforcing body 102 is housed in this housing section 108. A flap 110 is provided in approximately the center of the housing section 108 in the width direction. The flap 110 is formed, for example, by making a cut in a part of the housing section 108. By turning up the flap 110, it is possible to expose the inside of the housing section 108 (not shown).

[0057] The reinforcing member 102 is, for example, a pipe with a circular cross section made of a material such as metal, resin, fiber-reinforced resin, etc. In this embodiment, since the width of the sheet 10 is large, for example, two pipes are connected in series.

[0058] If there is space on the left and right sides of the sheet shutter device 1 that allows the reinforcing body 102 to be pulled out, the reinforcing body 102 may be configured as a single pipe, and the flap 110 may not be provided.

[0059] (action) This embodiment is configured as described above, and its operation will be described below. As shown in Figures 2 and 10, in the sheet shutter device 1 according to this embodiment, a lintel 26 is provided at the bottom of the shutter case 18, which can be used for maintenance of the sheet 10, the drive roll 60, and the take-up roll 24 (drive unit). A portion of the lintel 26 is covered by a lintel cover 28, forming an opening 30 for the sheet 10. The lintel cover 28 allows the opening 30 for the sheet 10 to be adjusted, so the width of the opening 30 can be easily adjusted depending on whether or not a reinforcement member 102 is attached to the bottom of the sheet 10, or whether the reinforcement member 102 is subsequently added. Furthermore, by removing the lintel cover 28 from the shutter case 18, maintenance of long parts inside the shutter case 18 can be easily performed through the lintel 26. Therefore, maintenance or replacement of long parts can be performed without temporarily cutting the shutter case 18.

[0060] The guide rollers 34 can also guide the sheet 10 when winding and unwinding. The distance between the guide rollers 34 and the sheet 10 can be adjusted depending on whether or not a reinforcing member 102 is attached to the bottom of the sheet 10, or whether or not the reinforcing member 102 is added later. Removing the guide rollers 34 makes it easier to perform maintenance on long parts inside the shutter case 18 through the lintel 26.

[0061] Specifically, a first attachment form and a second attachment form can be selected as the attachment form of the guide roller body 40 to the bracket 42, and a first attachment form and a second attachment form can be selected as the installation form of the bracket 42 to the shutter case 18. The separation distance between the roller 36 and the sheet 10 changes depending on whether the first attachment form and the first attachment form are selected or the second attachment form and the second attachment form are selected.

[0062] In the example shown in Fig. 2, a reinforcing member 102 is provided on the sheet 10, so a first installation configuration is used in which the distance between the roller 36 and the sheet 10 is relatively long. In the example shown in Fig. 10, a reinforcing member is not provided on the sheet 10, so a second installation configuration is used in which the distance between the roller 36 and the sheet 10 is relatively short. The distance between the guide roller 34 and the sheet 10 can be easily adjusted by selecting or changing between the first installation configuration and the second installation configuration depending on whether or not the reinforcing member 102 is attached to the bottom of the sheet 10, or whether the reinforcing member 102 is to be added later.

[0063] That is, the first attachment configuration is selected when an attachment (e.g., reinforcing member 102) of sheet 10 protrudes toward roller 36. This makes it possible to suppress interference between roller 36 and the attachment (e.g., reinforcing member 102). The second attachment configuration is selected when the attachment (e.g., reinforcing member 102) has no effect on roller 36. This allows roller 36 to be closer to sheet 10, making it easier to suppress deflection of sheet 10.

[0064] According to this embodiment, the opening width of the entrance / exit 30 of the lintel 26 can be easily adjusted, and the maintainability of the long parts inside the shutter case 18 can be improved.

[0065] Furthermore, if a buffer section 100 is provided at the lower end of the seat 10 along the width direction of the seat 10, the impact of interference between the lower end of the seat 10 and a person 120, machinery, etc. can be alleviated.

[0066] As shown in Figure 2, when the sheet 10 is completely wound (the shutter is fully open, and the opening 2 is open), if the reinforcing member 102 is positioned in front of the drive roll 60, the reinforcing member 102 will not move back and forth across the drive roll 60 when the sheet 10 is wound or unwound. Therefore, the sheet 10 can be wound or unwound smoothly.

[0067] In FIG. 1, if a reflective material 104 is provided in or near the buffer section 100, it is possible to call the attention of vehicles and people near the opening 2 when the seat 10 is opened or closed.

[0068] In this way, by providing the buffer portion 100, the reinforcing body 102, and the reflecting material 104, it is possible to improve safety while suppressing deflection of the sheet 10 in the sheet shutter device 1.

[0069] [Other embodiments] The above describes one example of an embodiment of the present invention, but the embodiment of the present invention is not limited to the above, and it goes without saying that various modifications can be made without departing from the spirit of the present invention. The first and second mounting configurations can be selected as the mounting configuration of the guide roller body 40 relative to the bracket 42, and the first and second mounting configurations can be selected as the mounting configuration of the bracket 42 relative to the shutter case 18. However, guide rollers with multiple specifications that differ in distance from the sheet 10 may be selected and used as appropriate. [Explanation of symbols]

[0070] 1 Sheet shutter device 2 Opening 10 sheets 14 Guide rail 18 Shutter Case 24 Winding roll (drive unit) 26 Lintel 28 Lintel Cover 34 Guide roller 36 Laura 38 Base 40 Guide roller body 42 Bracket 60 Drive roll (drive unit) 102 Reinforcement (addition)

Claims

1. A sheet shutter device that is guided by left and right guide rails erected at both ends of an opening in a building in the width direction and can open and close the opening, A drive unit provided in the shutter case; a sheet having a width extending between the guide rails and capable of being wound into and unwound from the shutter case by the drive unit; A lintel provided at the bottom of the shutter case and constituting at least a part of the entrance and exit of the sheet; A lintel cover that is detachable from the shutter case, closes a part of the lintel to form the entrance / exit for the seat, and is configured to be able to adjust the width of the entrance / exit; A sheet shutter device having:

2. a guide roller that is detachably provided in the shutter case through the lintel and is configured so that the distance between the guide roller and the sheet can be adjusted; The sheet shutter device according to claim 1, wherein the lintel cover is detachable from the shutter case from below the guide roller.

3. The guide roller includes a guide roller body having a roller and a base that supports the roller for rotation, and a bracket interposed between the guide roller body and the shutter case, The bracket is capable of selecting between a first mounting form and a second mounting form for the guide roller body, and is capable of selecting between a first mounting form and a second mounting form for the installation form relative to the shutter case, and the sheet shutter device described in claim 2, wherein the distance between the roller and the sheet changes when the first mounting form and the first mounting form are selected and when the second mounting form and the second mounting form are selected.

4. the separation distance in the first mounting configuration is longer than the separation distance in the second mounting configuration; The first mounting configuration is selected when the appendage of the sheet protrudes toward the roller, The sheet shutter device according to claim 3, wherein the second mounting configuration is selected when there is no influence of the additional object on the roller.

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