Partition lifting device

Abstract

To provide a partition lifting device that can smoothly and stably raise and lower sheets that partition indoor spaces. [Solution] The system comprises a sheet that partitions an indoor space, a support member attached to a support part provided at the top of the indoor space, a drive shaft pivotally supported by the support member, a suspension rod extending along the width direction of the sheet and provided at the lower end of the sheet, a support string extending in the vertical direction and suspending the suspension rod, a motor that drives the drive shaft, and a drum that rotates integrally with the drive shaft and winds the support string between a pair of guide parts. The drum is formed so that only one support string fits between the pair of guide parts, and winds the support string in a spiral pattern while stacking it in the radial direction of the drive shaft.

Description

Technical Field

[0001] The present invention relates to a partition lifting device.

Background Art

[0002] Conventionally, in large indoor spaces such as multi-purpose halls, gymnasiums, and various sports facilities that can be used regardless of the weather, sheets and nets that can be deployed and stored on the ceiling and side surfaces are provided so that the indoor space can be partitioned into a plurality of spaces according to the purpose of use. Sheets and nets for partitioning indoor spaces generally adopt a moving method similar to that of curtains and drawstrings.

[0003] In Patent Document 1, it is composed of a sheet formed in a substantially same shape along the partition surface of an indoor space, a moving rope connected to the upper end side of the net or the lower end side through the sheet to move the sheet up and down, and a winch for moving the moving rope, and a long rod-shaped body is directly or indirectly attached along the upper end side or the lower end side of the sheet to maintain the width in the left-right direction when the sheet is suspended. A method for suspending a sheet for an indoor space is disclosed.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] According to Patent Document 1, it aims to smoothly open and close the partition surface by lifting and lowering the sheet while maintaining the width in the left-right direction with a rod-shaped body. However, when pulling up the moving rope with a winch, there is a problem that the sheet may not be opened and closed smoothly up and down, may get entangled, or the end of the sheet may be twisted and the moving rope may not be neatly wound up, resulting in the sheet being unable to be opened and closed.

[0006] The present invention has been made in view of the aforementioned problems, and its purpose is to provide a partition lifting device that can smoothly and stably raise and lower a sheet that partitions an indoor space. [Means for solving the problem]

[0007] The above objective of the present invention is achieved by the following configuration. (1) A sheet to partition the indoor space, A support member attached to a support part provided in the upper part of the indoor space, A drive shaft supported by the aforementioned support member, A suspension rod extending along the width direction of the sheet and provided at the lower end of the sheet, A support string extending in the vertical direction and suspending the suspension rod, A motor that drives the aforementioned drive shaft, It has a winding device that rotates integrally with the drive shaft and winds the support string between a pair of guide sections, The winding device is formed such that only one support string is inserted between the pair of guide sections, and the support string is wound in a spiral manner while being stacked in the radial direction of the drive shaft. Partition lifting device. [Effects of the Invention]

[0008] According to the present invention, by inserting only one support cord between a pair of guide sections provided on the drum, the support cord that suspends the suspension rod provided at the lower end of the sheet can be wound up without changing its axial position, so that the sheet can be raised and lowered smoothly and stably without twisting. [Brief explanation of the drawing]

[0009] [Figure 1] Figure 1 is an overall view of the partition lifting device showing the sheet in its lowered, deployed state. [Figure 2] Figure 2 shows (a) a side view of the main part of Figure 1 and (b) a front view of the main part of Figure 1. [Figure 3]Figure 3 is a side view showing the winding unit. [Figure 4] Figure 4 is a front view showing the winding unit. [Figure 5] Figure 5 is a magnified view of the widthwise edge of the bottom of the sheet in Figure 1. [Figure 6] Figure 6 is a side view showing the partition lifting device in its stored state with the support cord wound up. [Figure 7] Figure 7 shows (a) a side view of the main part and (b) a front view of the main part of the partition lifting device of the second embodiment. [Figure 8] Figure 8 is a front view showing the winding unit of the second embodiment. [Figure 9] Figure 9 is an enlarged view of the main part of Figure 7(b) showing the slit 64. [Modes for carrying out the invention]

[0010] (First Embodiment) Hereinafter, a first embodiment of a partition lifting device to which the present invention is applied will be described in detail with reference to the drawings. Figure 1 is an overall view of the partition lifting device showing the deployed state with the sheet lowered. Figure 2 is (a) a side view of the main part of Figure 1 and (b) a front view of the main part of Figure 1. Figure 3 is a side view showing the winding unit. Figure 4 is a front view showing the winding unit. Figure 5 is an enlarged view of the widthwise end of the lower part of the sheet in Figure 1. Figure 6 is a side view showing the partition lifting device in a stored state with the support cords wound up.

[0011] The partition lifting device 10 includes a support bracket 11, a drive shaft 12, a drive motor 13, a sheet support section 14, a sheet 20, a drum 30 which is a winding device, and a control device 50. The partition lifting device 10 is attached to the upper part of the indoor space S by a support bracket 11. The upper end of the sheet 20 is supported on the support bracket 11 side via a sheet support part 14 so as to be adjustable in vertical position. The lower end of the sheet 20 is connected to the drum 30 via a support string 23. By controlling the drive shaft 12 pivotally supported by the support bracket 11 with the drive motor 13, the drum 30 that rotates integrally with the drive shaft 12 rotates. The partition lifting device 10 can be switched between a partition state (see FIG. 1 etc.) in which the indoor space S is partitioned by the seat 20 and a storage state (see FIG. 6) in which the seat 20 is stored above the indoor space S by controlling the rotation of the drum 30 via the drive motor 13.

[0012] As shown in FIG. 1, the support bracket 11 is a rectangular plate-shaped support member attached to the support portion 1 disposed at the upper part of the indoor space S. A plurality of support brackets 11 are provided along the width direction of the seat 20, thereby supporting the partition lifting device 10 on the support portion 1 at the upper part of the indoor space S. In this embodiment, the support portion 1 to which the support bracket 11 is attached is an H-shaped steel provided so as to span the upper part of the indoor space S as shown in FIGS. 1 and 2. However, it is only necessary that a plurality of support brackets 11 can be arranged side by side along the drive shaft 12, and the configuration is not limited to the above.

[0013] The drive shaft 12 extends along the width direction of the seat 20 and is pivotally supported by bearings provided in the shaft holes formed in the support bracket 11. Further, the drive shaft 12 is disposed above the upper end of the seat 20. Furthermore, the drive shaft 12 is pivotally supported by a plurality of support brackets 11 arranged side by side along the axial direction. Thereby, the drive shaft 12 that is long in the axial direction is pivotally supported in a stable state without significantly deflecting.

[0014] The drive motor 13 is provided at an arbitrary position on the support portion 1 and drives the drive shaft 12. The drive of the drive motor 13 is controlled by the control device 50. As the drive motor , a three-phase motor with a braking function or a single-phase motor is used. According to this configuration, since the drive start and drive stop of the drive motor 13 can be performed smoothly, the accuracy of the lifting operation of the seat 20 is improved. In the example shown in Figure 1, the drive motor 13 is provided as a single unit in the axial center of the drive shaft 12, but it is also possible to have multiple drive motors provided on the drive shaft 12. With this configuration, the required output of the drive motor 13 can be reduced even when the drive shaft 12 is long or when the seat 20 is heavy.

[0015] In the example shown in Figures 2 to 4, the seat support portion 14 includes a pair of adjustment portions 14A, 14A whose vertical position relative to the support bracket 11 can be adjusted by adjusting the tightening amount of bolts, a pair of support chains 14B, 14B whose one end is locked to the pair of adjustment portions 14A, 14A, and a support rod support portion 14C which connects the other ends of the pair of support chains 14B, 14B. The support rod support portion 14C is formed in a U-shape with an open top, and is supported such that a support rod 22 extending along the upper end of the seat 20 is fitted into it. As a result, the seat support section 14 can smoothly and easily adjust the vertical position of the upper end of the seat 20 supported on the support bracket 11 side by appropriately adjusting the bolt tightening amount of the pair of adjustment sections 14A, 14A and the length of the pair of support chains 14B, 14B.

[0016] (Sheet 20) As shown in Figure 1, the sheet 20 has an upper sheet portion 20A that constitutes the upper part of the sheet 20, and a lower sheet portion 20B that is located below the upper sheet portion 20A. The upper part 20A of the sheet is formed by a mesh member that allows visibility from the opposite side. The lower part of the sheet 20B is harder than the upper part of the sheet 20A, is a solid member whose opposite side is not visible, and is formed from a resin sheet or the like.

[0017] In this embodiment, the lower part of the sheet 20B constitutes approximately one-quarter of the lower part of the sheet 20, and the upper part of the sheet 20A constitutes approximately three-quarters of the portion above the lower part of the sheet 20B. The ratio of the upper part of the sheet 20A to the lower part of the sheet 20 can be appropriately changed depending on the application. The height of the lower part 20B of the sheet is preferably between 50 cm and 300 cm, but the entire sheet 20 may be made of a resin sheet.

[0018] With this configuration, if the lower part 20B of the sheet is raised, it is possible to block the view from one space partitioned by the sheet 20 to the other space, and the sheet 20 can also be used as a screen onto which a projector or the like is projected. Furthermore, by lowering the lower part 20B of the sheet, it is possible to make the partitioned spaces visible to each other.

[0019] The sheet 20 includes a suspension rod 21 extending along the lower end of the sheet 20, a support rod 22 extending along the upper end of the sheet 20, a support string 23 for suspending the suspension rod 21 from the drive shaft 12, an insertion hole 24 through which the support string 23 is inserted, and rod-shaped members 25 provided at both lower ends of the sheet 20 to prevent the lower end of the sheet 20 from becoming wrinkled.

[0020] In this embodiment, the support cord 23 is a stainless steel wire, and as shown in Figure 1, multiple cords are arranged in a row at predetermined intervals along the extending direction of the suspension rod 21. Each support cord 23 extends vertically, its lower end connected to a suspension rod 21, and its upper end connected to a drum 30 that rotates integrally with the drive shaft 12. As a result, the suspension rod 21 at the lower end of the sheet 20 is suspended from the drum 30 by multiple support cords 23 arranged in a line along the width direction of the sheet 20. Furthermore, the stainless steel wire constituting the support cord 23 may have its outer surface coated with a resin component.

[0021] The insertion holes 24 are through holes formed in the sheet 20 through which the support strings 23 are inserted, and multiple holes are arranged in a row at predetermined intervals in the vertical direction along the support strings 23 which extend in the vertical direction. This forms a row of insertion holes 24 arranged in the vertical direction in the sheet 20. As shown in Figure 1, the rows of insertion holes 24 are arranged in multiple rows in the width direction of the sheet 20, corresponding to the support strings 23 which are arranged in the width direction of the sheet 20. Each row of insertion holes 24 is configured such that the number of insertion holes 24 and their vertical arrangement are all the same. Furthermore, a single support string 23 is continuously inserted through a row of insertion holes 24. As a result, the support string 23 alternates between being positioned on the front side and the back side of the sheet 20 by being inserted through the insertion holes 24, as shown in Figures 1, 2(a), and 2(b).

[0022] Furthermore, an annular reinforcing member, the eyelet 26, is provided on the outer edge of each insertion hole 24. This prevents the edges of the insertion holes 24 formed in the sheet 20 from being damaged or deteriorated by rubbing against them when the support string 23 is inserted through them.

[0023] The support rod 22 is supported on the support bracket 11 side via the seat support portion 14. As a result, the upper edge of the seat 20 is supported below the drive shaft 12, which is pivotally supported by the support bracket 11, and is substantially parallel to the drive shaft 12. As shown in Figure 3, the support rod 22, which is the upper end of the seat 20, and the drive shaft 12 are offset not only in the vertical position but also in the front-rear direction perpendicular to the width direction of the seat 20.

[0024] As shown in Figure 5, the rod-shaped members 25 are elongated members provided at both ends in the width direction of the sheet 20, extending inward in the width direction from both ends in the width direction of the sheet 20. The rod-shaped members 25 are provided so as to be housed between the front and back surfaces of the sheet 20, but they may also be provided by being directly attached to either the front or back surface of the sheet 20. In this embodiment, the rod-shaped member 25 is provided with a bendable wire cable, but it may also be made of iron or resin. The length of the rod-shaped member 25 is not particularly limited, but it is preferably between 10 cm and 200 cm, and more preferably between 50 cm and 100 cm.

[0025] Multiple rod-shaped members 25 are arranged in a vertical direction at predetermined intervals from the lower end of the sheet 20. In this configuration, the rod-shaped members 25 are positioned to cross the vertical center portion provided between vertically adjacent insertion holes 24. Refer to Figures 1 and 5 for this configuration. In the examples shown in Figures 1 and 5, the rod-shaped members 25 are arranged in a vertical direction in a row of three, and are positioned within the area composed of the relatively rigid lower part 20B of the sheet. The number of rod-shaped members 25 and the vertical range in which the rod-shaped members 25 are positioned are not limited to these figures.

[0026] (Drum 30) Next, the specific configuration of the drum 30 will be described based on Figures 3 and 4. The drum 30 includes a winding section 31, a guide section 32, and a reinforcing member 33. The winding section 31 is a cylindrical member that is mounted on the drive shaft 12 and is fixed to the drive shaft 12 so as to rotate integrally with the drive shaft 12.

[0027] The guide section 32 is a disc-shaped member centered on the cylindrical winding section 31, and a pair of them are provided arranged in the axial direction. The distance between the pair of guide sections 32, 32 is greater than the diameter R of the support string 23, but less than twice the diameter of the support string 23. This ensures that only one support string 23 fits between the pair of guide sections 32, 32. As a result, as shown in Figure 4, the support string 23 that is wound onto the winding section 31 is wound in a spiral pattern so that it is aligned in a single layer by the pair of guide sections 32, 32.

[0028] The reinforcing member 33 is a plate-shaped member with a U-shaped cross-section, formed by bending both ends in the width direction of a longitudinal plate-shaped member into an L-shape. The reinforcing member 33 is attached to the outer surface side where the pair of guide portions 32 do not face each other. More specifically, multiple reinforcing members 33 are arranged radially from the winding portion 31 toward the outer edge of the disc-shaped guide portion 32. In the example shown in Figure 3, six reinforcing members 33 are provided on the guide portion 32. This configuration allows the disc constituting the guide section 32 to be made thinner, thus enabling both weight reduction and increased strength of the drum 30.

[0029] (Control device 50) The control device 50 includes, for example, a control unit configured using a CPU, GPU, etc., and a storage unit configured using, for example, a volatile or non-volatile storage device such as an HDD, ROM, or RAM. The control unit realizes various processes by reading and executing various programs and predetermined conditions stored in the storage unit. The control device 50 is configured to receive the lifting and lowering operations of the remote control that operates the seat 20, and controls the forward and reverse driving and stopping of the drive motor 13 according to the remote control operation.

[0030] The control device 50 may have a built-in counter that counts the number of times the seat 20 is raised and lowered. This allows the user to be notified that maintenance or other action is required if the number of times the seat 20 is raised and lowered exceeds a predetermined number.

[0031] (Mechanism of Action and Effects) According to the partition lifting device 10 described above, the lifting and lowering movement of the suspension rod 21 suspended from the support string 23 can be controlled by controlling the rotation of the drum 30 with the drive motor 13. Specifically, the partition lifting device 10 can lower the suspension rod 21 at the lower end of the sheet 20 to a height near the ground or in contact with the ground in the indoor space S by unwinding the support cord 23 that is wrapped around the drum 30. This allows the sheet 20 to be switched to a partition state as shown in Figure 1. On the other hand, the partition lifting device 10 can raise the suspension rod 21 at the lower end of the sheet 20 to directly below the support rod 22 at the upper end of the sheet by winding the support string 23 around the drum 30. This allows the sheet 20 to be switched to the stored state shown in Figure 6. Here, the support cord 23 is inserted through insertion holes 24 arranged in a vertical direction, thereby alternately sewing between the front and back surfaces of the sheet 20. With this configuration, when the support cord 23 is wound up by the drum 30 and the suspension rod 21 rises, the sheet 20 is folded in one direction relative to the suspension rod 21 each time the suspension rod 21 reaches a height position where it contacts the insertion holes 24. By repeating this process, the stored sheet 20 is compactly and neatly housed directly below the support rod 22, as shown in Figure 6.

[0032] A single support string 23 is wound around the winding section 31 of the drum 30 in a spiral pattern, overlapping only in the radial direction, between a pair of guide sections 32, 32. As a result, the axial position of the support string 23 connected to the drive shaft 12 remains almost constant during the upward movement of the sheet 20 as it is wound around the drum 30, and during the downward movement of the sheet 20 as it is unwound from the drum 30. According to this configuration, the partition lifting device 10 ensures more stable opening and closing operation of the sheet 20 that partitions the indoor space S.

[0033] Furthermore, by providing reinforcing members 33 on the pair of guide sections 32, 32 of the drum 30, deformation of the pair of guide sections 32, 32 can be efficiently prevented, and a constant distance can be maintained between the pair of guide sections 32. As a result, even if the sheet 20 partitioning the indoor space S is large and the load on the drum 30 is large, the opening and closing operation of the sheet 20 will remain stable.

[0034] As the lifting position of the suspension rod 21 of the sheet 20 rises and the amount of support string 23 wound around it increases, the diameter of the portion of the support string 23 wound around the winding section 31 in a spiral pattern (hereinafter referred to as the annular spiral winding section) of the drum 30 gradually increases. On the other hand, as the lifting position of the suspension rod 21 of the sheet 20 falls lower and the amount of support string 23 wound around it decreases, the diameter of the annular spiral winding section gradually decreases. With this configuration, the partition lifting device 10 lowers the suspension rod 21 of the sheet 20 by a simple control that drives the drive shaft 12 at a constant rotational speed using the drive motor 13. As the suspension rod 21 approaches the ground, the lowering speed gradually decreases. This prevents the suspension rod 21 from contacting the ground forcefully without unnecessarily reducing the lowering speed of the sheet 20.

[0035] When the lifting rod 21 of the sheet 20 reaches the insertion hole 24 and the lower part of the sheet 20 is folded by the lifting rod 21, the widthwise ends of the sheet 20 may twist and not fold neatly, which can interfere with the lifting and lowering operation of the sheet 20. In contrast, a simple configuration in which multiple rod-shaped members 25 extending inward in the width direction from both ends in the width direction on the lower end of the sheet 20 are arranged vertically makes it easier to keep the ends of the sheet 20 straight, thus preventing the widthwise ends of the sheet 20 from twisting when the sheet 20 is folded by the upward-moving suspension rod 21. As a result, as shown in Figure 6, the sheet 20 folds neatly, and the switching of the sheet 20 to the stored state by the upward movement of the suspension rod 21 becomes smooth and stable.

[0036] (Second Embodiment) Next, based on Figures 7 to 9, the differences between the second embodiment of the partition lifting device 10 and the example described above will be explained. Figure 7 is (a) a side view of the main part and (b) a front view of the main part of the partition lifting device of the second embodiment. Figure 8 is a front view showing the winding unit of the second embodiment. Figure 9 is an enlarged view of the main part of Figure 7(b) showing the slit 64.

[0037] The partition lifting device 10A includes a support bracket 11, a drive shaft 12, a drive motor 13, a sheet support section 14, a sheet 60, a winding device drum 70, and a control device 50.

[0038] The sheet 60 includes a suspension rod 21 extending along the lower end of the sheet 60, a support rod 22 extending along the upper end of the sheet 60, a belt body 63 that suspends the suspension rod 21 from the drive shaft 12, a slit 64 through which the belt body 63 is inserted, and rod-shaped members 25 provided at both lower ends of the sheet 60 to prevent the lower end of the sheet 60 from becoming wrinkled.

[0039] The belt body 63 is a resin cord formed into a flat belt shape having a predetermined width, extending in the vertical direction, with its lower end connected to the suspension rod 21 and its upper end connected to a drum 70 that rotates integrally with the drive shaft 12. Furthermore, the belt body 63 is inserted through a slit 64 formed in the sheet 60.

[0040] The slits 64 are linear through-holes formed in the sheet 60 in the left-right direction, through which the belt body 63 is inserted. Multiple slits 64 are arranged in a row at predetermined intervals in the vertical direction along the belt body 63, which extends in the vertical direction. This forms a row of slits 64 arranged in the vertical direction on the sheet 60.

[0041] Furthermore, each slit 64 has a reinforcing section 65 formed by overlapping reinforcing sheets or tapes to reinforce at least both ends of the slit 64. In the example shown in Figure 9, the reinforcing section 65 is provided so as to cover the entire slit 64. This prevents the edges of the slits 64 formed in the sheet 60 from being damaged or deteriorated due to friction between the belt body 63 and the slits 64.

[0042] The drum 70 has a winding section 31 and a guide section 72. The distance between the pair of guide sections 72, 72 is slightly greater than the width of the belt body 63. This ensures that only one belt body 63 fits between the pair of guide sections 72, 72. As a result, as shown in Figures 7 and 8, the belt body 63 that is wound onto the winding unit 31 is wound in a spiral pattern so that it is aligned in a single layer by the pair of guide units 72, 72.

[0043] According to this configuration, by using a belt body 63 as a support string wound onto the drum 70, the belt body 63 wound onto the winding section 31 is smoothly aligned in a single layer, thus making the lifting and lowering operation of the seat more stable. Furthermore, because the belt body 63 is used, the belt body 63 is wound onto the winding section 31 with almost no interference with the guide section 32, thus eliminating the need for reinforcing members in the guide section 32.

[0044] Furthermore, by making the holes in the sheet 60 for inserting the belt body 63 into slits 64, the sliding resistance between the belt body 63 and the sheet 60 can be reduced, eliminating the need to provide a hard protective member on the sheet 60 side. As a result, wrinkles are less likely to form in the sheet 60. Furthermore, by creating slits 64 in the holes formed in the sheet 60, light leakage from the slits 64 is reduced. This further improves the light-shielding properties of the sheet 60.

[0045] Furthermore, the present invention is not limited to the embodiments described above, and can be modified, improved, etc., as appropriate.

[0046] As described above, the following matters are disclosed in this specification: (1) A sheet to partition the indoor space, A support member attached to a support part provided in the upper part of the indoor space, A drive shaft supported by the aforementioned support member, A suspension rod extending along the width direction of the sheet and provided at the lower end of the sheet, A support string extending in the vertical direction and suspending the suspension rod, A motor that drives the aforementioned drive shaft, It has a drum that rotates integrally with the drive shaft and winds the support string between a pair of guide sections, The drum is formed such that only one support string is inserted between the pair of guide portions, and the support string is wound in a spiral manner while being stacked in the radial direction of the drive shaft. Partition lifting device. With this configuration, by inserting only one support cord between a pair of guide sections on the drum, the support cord that suspends the suspension rod at the lower end of the sheet can be wound up without changing its axial position, allowing the sheet to move up and down smoothly and stably without twisting.

[0047] (2) The pair of guide portions formed in a disc shape have reinforcing members on the opposite side of the opposing surfaces that face each other. (1) The partition lifting device described above. This configuration allows for both a lighter drum and increased strength.

[0048] (3) The reinforcing member has ribs extending from the bearing portion through which the drive shaft is inserted toward the outer edge of the guide portion. (2) The partition lifting device described above. This configuration allows for more efficient enhancement of the drums.

[0049] (4) The sheet has through holes arranged at predetermined intervals in the vertical direction, The support string is inserted through the insertion hole, so that it appears alternately on the front and back surfaces of the sheet. A partition lifting device as described in any one of (1) to (3). With this configuration, the sheet can be folded as needed by a suspension rod that moves upward when a support cord is wound up.

[0050] (5) The support string is a stainless steel wire coated on its outer surface with a resin component, An annular reinforcing member is provided on the outer edge of the insertion hole. (4) Partition lifting device. This configuration improves the sliding properties of the support cord and also increases its strength, allowing for more stable use over a longer period.

[0051] (6) The sheet further has a support rod that extends along the width direction of the sheet and is provided at the upper end of the sheet, The support rod is supported by the support member in a configuration that allows for vertical position adjustment. A partition lifting device as described in any one of (1) to (5). This configuration makes it easy to adjust the vertical position of the upper edge of the seat.

[0052] (7) A rod-shaped member of a predetermined length extending in the width direction is provided at the lower part of both ends in the width direction of the sheet. A partition lifting device as described in any one of (1) to (6). This configuration makes it easier to keep the edges of the sheet straight, thus effectively preventing the edges from twisting when the sheet is folded and raised.

[0053] (8) Multiple rod-shaped members are arranged in a vertical direction at predetermined intervals from the lower end of the sheet. (7) Partition lifting device. This configuration makes it easier to keep the edges of the sheet straight, thus effectively preventing the edges from twisting when the sheet is folded and raised.

[0054] (9) The rod-shaped member is 10 cm or longer and 200 cm or shorter. (7) or (8) The partition lifting device described above. This configuration makes it easier to keep the edges of the sheet straight, thus effectively preventing the edges from twisting when the sheet is folded and raised.

[0055] (10) The sheet has an upper part made of mesh material and a lower part positioned below the upper part of the sheet, The lower part of the sheet is a solid member that is harder than the upper part of the sheet and whose opposite side is not visible. A partition lifting device as described in any one of (1) to (9). This configuration allows users to choose whether or not to use partition sheets to screen off indoor spaces, depending on the intended use, thus improving convenience.

[0056] (11) The vertical width of the lower part of the sheet is 50 cm or more and 300 cm or less. (10) Partition lifting device. This configuration allows users to choose whether or not to use partition sheets to screen off indoor spaces, depending on the intended use, thus improving convenience.

[0057] (12) The support string is formed in the shape of a flat belt, (1) The partition lifting device described above. With this configuration, the support cords wound onto the drum are smoothly aligned in a single strand, resulting in more stable seat raising and lowering operation.

[0058] (13) The sheet has slits formed therein, through which the flat belt-shaped support strings are inserted, arranged at predetermined intervals in the vertical direction. (12) Partition lifting device. This configuration allows for smaller holes to be formed in the sheet for passing the support strings, thereby improving the light-blocking properties of the sheet. [Explanation of Symbols]

[0059] 1 Support part 10 Partition Lifting Device 11. Support bracket (support member) 12 drive shafts 13. Drive motor (motor) 14. Seat support section 14A adjustment part 14B Support chain 14C Support rod support part 20 sheets 20A Top of the seat 20B Under the seat 21 Hanging rod 22 Support rod 23 Support string 24 Through hole 25 Rod-shaped member 26 eyelets 30 drums 31 Winding section 32 Guide section 33 Reinforcement members 33a Rib 50 Control device

Claims

1. A sheet to partition the indoor space, A support member attached to a support part provided in the upper part of the indoor space, A drive shaft supported by the aforementioned support member, A suspension rod extending along the width direction of the sheet and provided at the lower end of the sheet, A support string extending in the vertical direction and suspending the suspension rod, A motor that drives the aforementioned drive shaft, It has a drum that rotates integrally with the drive shaft and winds the support string between a pair of guide sections, The drum is formed such that only one support string is inserted between the pair of guide portions, and the support string is wound in a spiral manner while being stacked in the radial direction of the drive shaft. Partition lifting device.

2. The pair of guide portions, which are formed in a disc shape, have reinforcing members on the opposite side of the opposing surfaces that face each other. The partition lifting device according to claim 1.

3. The reinforcing member has ribs extending from the bearing portion through which the drive shaft is inserted toward the outer edge of the guide portion. The partition lifting device according to claim 2.

4. The sheet has through holes arranged at predetermined intervals in the vertical direction. The support string is inserted through the insertion hole, so that it appears alternately on the front and back surfaces of the sheet. The partition lifting device according to claim 1.

5. The support string is a stainless steel wire coated on its outer surface with a resin component. An annular reinforcing member is provided on the outer edge of the insertion hole. The partition lifting device according to claim 4.

6. The sheet further has a support rod that extends along the width direction of the sheet and is provided at the upper end of the sheet, The support rod is supported by the support member in a configuration that allows for vertical position adjustment. The partition lifting device according to claim 1.

7. A rod-shaped member of a predetermined length extending in the width direction is provided at the lower part of both ends in the width direction of the sheet. The partition lifting device according to claim 1.

8. Multiple rod-shaped members are arranged vertically at predetermined intervals from the lower end of the sheet. The partition lifting device according to claim 7.

9. The rod-shaped member is 10 cm or longer and 200 cm or shorter. The partition lifting device according to claim 7.

10. The sheet has an upper part made of mesh material and a lower part positioned below the upper part of the sheet. The lower part of the sheet is a solid member that is harder than the upper part of the sheet and whose opposite side is not visible. The partition lifting device according to claim 1.

11. The vertical width of the lower part of the aforementioned sheet is 50 cm or more and 300 cm or less. The partition lifting device according to claim 10.

12. The support string is formed in the shape of a flat belt. The partition lifting device according to claim 1.

13. The sheet has slits formed in it through which the flat belt-shaped support strings are inserted, arranged at predetermined intervals in the vertical direction. The partition lifting device according to claim 12.

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