JP2020026330A - Curtain device and booth - Google Patents

Abstract

To provide a curtain device capable of carrying in and out a hung cargo without interfering with a wire rope of a crane.SOLUTION: A curtain device 1 includes a first rail 30A undulating with a base end part set to a shaft, a plurality of first runners 33A traveling along the first rail 30A and a first curtain 40A suspended by a plurality of the first runners 33A; when the first rail 30A is set to a falling attitude, the first curtain 40A is deployed by an own weight; when the first rail 30A is set to a standing attitude, the first curtain 40A is folded by the own weight, and a wire rope passing section Ib is formed; the wire rope WR is caused to pass through the wire rope passing section Ib to thereby prevent the curtain device 1 from interfering with the wire rope WR.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a curtain device and a booth. More particularly, the present invention relates to a curtain device for partitioning a specific area from the outside while allowing loading / unloading of a suspended load, and a booth provided with the curtain device.

  In an area where dust is generated, an area where atmosphere control such as cooling and heating is performed, a curtain may be used as a partition from the outside. For example, Patent Document 1 discloses that a curtain is provided at an opening of a luggage compartment in order to partition a luggage compartment whose temperature is controlled from the outside.

JP-A-2015-004465

  The conventional curtain device has a configuration in which a curtain rail is fixed in a horizontal state. Therefore, in order to carry the suspended load of the overhead crane into the area partitioned by the curtain device, lift the suspended load to a position higher than the curtain rail and carry it in from the top so that the wire rope of the overhead crane does not interfere with the curtain rail. I needed to. Further, when such carrying-in is not possible, it is necessary to use another transporting device such as a forklift, which is troublesome.

  In view of the above circumstances, it is an object of the present invention to provide a curtain device capable of carrying in / out a suspended load without interfering with a wire rope of a crane, and a booth including the curtain device.

According to a first aspect of the present invention, there is provided a curtain device, wherein a first rail that rises and falls so that a distal end portion moves up and down around a base end portion, a plurality of first runners running along the first rail, and the plurality of first runners. A first curtain hung from the base end to the tip end when the first rail is lowered from the base end toward the tip end. In a standing posture in which the first curtain is raised from the base end toward the distal end, the first curtain is folded by its own weight, and a wire rope passage section is formed outside the distal end.
A curtain device according to a second aspect of the present invention is the curtain device according to the first aspect, wherein a second rail that rises and falls so that a distal end portion moves up and down around a base end portion, a plurality of second runners running along the second rail, A second curtain suspended by a plurality of second runners, and when the second rail is in a falling posture from the base end toward the distal end, the second curtain is deployed by its own weight, When the second rail is in an upright posture rising from the base end toward the distal end, the second curtain is folded by its own weight, and the distal ends of the first rail and the second rail face each other. When the first rail and the second rail are set to the lying posture, the space between the distal end of the first rail and the distal end of the second rail is closed, and the first rail is closed. And before When the second rail to the upright position, characterized in that the said wire rope passing section between the open and the distal end of the first rail and the front end portion of the second rail is formed.
A curtain device according to a third invention is characterized in that, in the second invention, an opening / closing drive unit that raises and lowers the first rail and the second rail is provided.
A curtain device according to a fourth invention is the curtain device according to the third invention, wherein a first arm extending from the base end of the first rail and a second arm extending from the base end of the second rail. The opening / closing drive unit includes a first rope having a first end connected to the first arm, a first end connected to the second arm, and a second end connected to an intermediate portion of the first rope. And a winch that winds and unwinds the second end of the first rope.
A booth according to a fifth invention is a booth including the curtain device according to any one of claims 1 to 4, wherein the booth surrounds a predetermined area and has a side opening reaching an upper edge, and the upper side of the side wall. A top plate spanned over an edge, wherein the curtain device is provided in the side opening, an upper opening connected to the side opening is formed in the top plate, and the upper opening The connection section with the side opening overlaps with the wire rope passage section at a horizontal position.
The booth according to a sixth aspect of the present invention is the booth according to the fifth aspect, further comprising a first closing plate provided on the first rail and closing a gap between the first rail in the lying posture and the top plate.
The booth of the seventh invention is characterized in that, in the fifth or sixth invention, an exhaust pipe for dust collection connected to the side wall or the top plate is provided.

According to the first invention, when the first rail is in the upright posture, the first curtain is folded and the wire rope passage section is formed. By passing the wire rope with the suspended load through the wire rope passage section, the suspended load can be carried in / out without interference between the curtain device and the wire rope.
According to the second invention, when the first rail and the second rail are in the upright posture, the first curtain and the second curtain are folded, and a wire rope passage section is formed. By passing the wire rope with the suspended load through the wire rope passage section, the suspended load can be carried in / out without interference between the curtain device and the wire rope.
According to the third invention, the curtain device can be opened and closed by operating the open / close drive unit to raise and lower the first rail and the second rail.
According to the fourth aspect, by operating the winch, the first rail and the second rail can be raised and lowered synchronously.
According to the fifth aspect of the present invention, the suspended load can be moved within a range in which the wire rope is located within the upper opening of the top plate after the suspended rope is passed through the wire rope passage section of the curtain device. . Therefore, the suspended load can be carried in and out of the booth without interfering with the wire rope.
According to the sixth aspect, even when the first rail is in the lying position, the gap between the first rail and the top plate is closed, so that the booth can be more easily closed.
According to the seventh aspect, dust generated in the booth can be collected by the exhaust pipe, so that scattering of the dust to the outside can be suppressed.

It is a booth concerning a 1st embodiment of the present invention, and is a front view of a booth in a state where a curtain device was closed. FIG. 2 is a front view of the booth of FIG. 1 with a curtain device opened. It is a top view of the booth of FIG. FIG. 2A is a front view of the first beam. FIG. 2B is a front view of the first rail. It is a booth concerning a 2nd embodiment of the present invention, and is a front view of a booth in a state where a curtain device was closed. FIG. 6 is a front view of the booth of FIG. 5 with the curtain device opened.

Next, an embodiment of the present invention will be described with reference to the drawings.
[First Embodiment]
1 to 3 show a booth AA according to a first embodiment of the present invention. In this specification, the x, y, and z directions are defined as shown in FIGS. The x direction corresponds to the width direction of the booth AA. The y direction corresponds to the front-back direction of the booth AA. The z direction corresponds to the height direction of the booth AA.

  The booth AA according to the present embodiment surrounds the entire space in which the opening operation of the flexible container bag FC is opened, and prevents scattering of dust generated by the opening operation. The booth AA is a dust collection booth having a function of collecting dust by exhaust.

  The flexible container bag FC is carried into the booth AA while being suspended by a crane such as an overhead crane, and is carried out of the booth AA. In FIG. 2, reference numeral HK denotes a crane hook, and reference numeral WR denotes a wire rope that suspends the hook HK. The flexible container bag FC is slung on the hook HK.

(booth)
Next, the configuration of the booth AA will be described.
The booth AA has a side wall 11 surrounding a predetermined area where the flexible container bag FC is opened. The side wall 11 is a three-sided enclosure composed of three wall surfaces, and is open at the front. The side wall 11 is provided upright on the hopper HP for charging the contents of the flexible container bag FC.

  The front opening of the side wall 11 is referred to as “side opening 12”. The upper portion of the side opening 12 reaches the same height as the upper edge 11a of the side wall 11. Note that a wall surface may be provided on a part of the front surface of the booth AA. For example, a wall surface may be provided in a lower part of the front surface of the booth AA.

  A top plate 13 is hung over the upper edge 11a of the side wall 11. Most of the upper part of the side wall 11 is covered with the top plate 13. An upper opening 14 is formed in the top plate 13. The upper opening 14 is a substantially U-shaped opening that is long in the y direction, and is arranged at the center of the top plate 13 in the width direction (x direction). The base end of the upper opening 14 is connected to the side opening 12, and the end reaches almost the center of the top plate 13.

  A section connected to the side opening 12 at the base end of the upper opening 14 is referred to as a “connection section Ia”. A region near the end of the upper opening 14 is referred to as a “wire rope stop region Ws”. The upper opening 14 has a shape reaching the wire rope stop region Ws from the connection section Ia. The wire rope stop area Ws is an area where the wire rope WR of the crane is arranged when the flexible container bag FC is arranged at a position suitable for opening work. The wire rope stop area Ws is set at a position where the entire flexible container bag FC fits in the booth AA. The wire rope WR enters the upper opening 14 from the connection section Ia and stops at the wire rope stop area Ws. That is, the upper opening 14 defines the flow line of the wire rope WR.

  An exhaust pipe 15 for dust collection is connected to one wall surface forming the side wall 11. The other end of the exhaust pipe 15 is connected to an exhaust fan (not shown). When the exhaust fan is operated, the air in the booth AA is sucked through the exhaust pipe 15. Thereby, the dust generated in the booth AA can be collected, and the scattering of the dust to the outside of the booth AA can be suppressed. Note that the exhaust pipe 15 may be connected to the top plate 13 instead of the side wall 11.

(Curtain device)
Next, the configuration of the curtain device 1 will be described.
The curtain device 1 is provided in the side opening 12. As shown in FIG. 1, when the curtain device 1 is closed, the side opening 12 is closed, and the booth AA can be closed. As shown in FIG. 2, when the curtain device 1 is opened, the side opening 12 is opened, and the flexible container bag FC can be carried in / out through the side opening 12. That is, the side opening 12 can be opened and closed by the curtain device 1.

  The curtain device 1 has a first beam 20A shown in FIG. The first beam 20A is a rod-shaped member, and is fixed to the upper edge of the side opening 12 in a horizontal state (see FIGS. 2 and 3). A disk-shaped sliding plate 21 is fixed to the front surface of the first beam 20A. A through hole 21h is formed in the center of the sliding plate 21 and the first beam 20A at the back thereof. A pillow plate 22 is fixed to the upper surface of the first beam 20A. The material of the pillow plate 22 is not particularly limited, but a material such as rubber that can absorb an impact is preferable. The sliding plate 21 and the pillow plate 22 are provided at predetermined intervals along the longitudinal direction of the first beam 20A.

  The first rail 30A shown in FIG. 4B is attached to the front surface of the first beam 20A. The first rail 30A includes a pair of poles 31 and 31 and a support member 32 that supports the pair of poles 31 and 31. The support member 32 is a rod-shaped member, and the poles 31 are fixed to the lower surface thereof. The pair of poles 31, 31 are arranged in parallel at predetermined intervals vertically, and both ends are closed. A plurality of first runners 33A (four in the present embodiment) are provided between the pair of poles 31, 31. The first runner 33A runs along the pole 31 (the first rail 30A).

  The plurality of first runners 33A suspend the first curtain 40A. More specifically, each first runner 33A has a hook. The upper edge of the first curtain 40A is hung on the hook of the first runner 33A at a predetermined interval.

  A disk-shaped sliding plate 34 is fixed to the back of the base end of the support member 32. A through hole 34h is formed in the center of the slide plate 34 and the support member 32 at the front thereof. The sliding plate 34 of the first rail 30A is placed on the front surface of the sliding plate 21 of the first beam 20A, and the pins 23 are inserted into the through holes 21h and 34h, whereby the first rail 30A is attached to the first beam 20A. Is attached (see FIG. 3).

  As described above, since the base end of the first rail 30A is pivotally supported, the first rail 30A is raised and lowered so as to move up and down around the base end. That is, the inclination angle of the first rail 30A can be changed. When the first rail 30A is placed in the lying position in which the first rail 30A is lowered from the base end toward the distal end, the first runner 33A runs toward the distal end by its own weight. Conversely, when the first rail 30A is in a standing posture in which the first rail 30A rises from the base end toward the front end, the first runner 33A runs toward the base end by its own weight.

  A stopper 35 is provided on the upper surface of the support member 32. The stopper 35 has an inverted-L shape as a whole, and includes a vertical portion 35a erected on the upper surface of the support member 32 and a horizontal portion 35b extending rearward (to the first beam 20A side) from the upper end of the vertical portion 35a. When the first rail 30A falls down, the horizontal portion 35b is locked to the pillow plate 22 provided on the first beam 20A. As a result, further falling down of the first rail 30A (clockwise turning in FIG. 4B) is stopped. The stopper 35 has a function of maintaining the first rail 30A in a falling posture at a specific inclination angle while receiving the weight of the first rail 30A.

  The support member 32 extends further outward than the portion provided with the through hole 34h. This extension is referred to as a first arm 36A. The first arm 36A extends from the base end along the longitudinal direction of the first rail 30A. An eye plate 37 for connecting a first rope 52 (to be described later) used to raise and lower the first rail 30A is provided at a distal end portion of the first arm 36A.

  A screw shaft is provided at the distal end of the first arm 36A, and a weight 38 is attached to the screw shaft. The weight 38 balances the weight of the first rail 30A and the first arm 36A with the through hole 34h as a boundary. In the present embodiment, the weight on the first rail 30A side is set slightly heavier than the weight on the first arm 36A side. Therefore, unless an external force is applied, the first rail 30A is maintained in the lying posture. In addition, the load when the first rail 30A is erected by the weight 38 is reduced.

  A first closing plate 39A is provided on the back surface of the first rail 30A. The first closing plate 39A is provided over the entire longitudinal direction of the first rail 30A. The first closing plate 39A is a substantially triangular plate material whose width increases from the base end to the front end of the first rail 30A. The function of the first closing plate 39A will be described later.

  As shown in FIGS. 1 to 3, the curtain device 1 further has a second beam 20B, a second rail 30B, and a second curtain 40B. The second beam 20B is basically symmetrical to the first beam 20A. The first beam 20A and the second beam 20B are fixed to the upper edge of the side opening 12. Further, the first beam 20A and the second beam 20B are provided at an interval so as to avoid the connection section Ia of the upper opening 14.

  The second rail 30B is basically symmetrical to the first rail 30A. The second rail 30B is provided with a plurality of second runners 33B running along the second rail 30B. A second arm 36B extends from the base end of the second rail 30B. The second rail 30B is provided with a second closing plate 39B. The second curtain 40B is basically symmetrical to the first curtain 40A. The second curtain 40B is suspended by a plurality of second runners 33B.

  The second rail 30B also rises and falls so that the distal end moves up and down around the base end. When the second rail 30B is placed in the lying posture, the second runner 33B runs toward the front end by its own weight. Conversely, when the second rail 30B is in the upright posture, the second runner 33B runs toward the base end by its own weight.

  The first rail 30A and the second rail 30B are arranged such that their tip portions face each other. The first rail 30A turns in the xz plane. The second rail 30B turns in a plane parallel to the turning plane of the first rail 30A. Here, the second rail 30B is disposed forward of the first rail 30A so as not to interfere with the first rail 30A.

  One of the two edges along the z direction of the first curtain 40A is referred to as a fixed edge 41, and the other is referred to as a free edge 42. The fixed edge 41 is disposed on the base end side of the first rail 30A, and the free edge 42 is disposed on the distal end side of the first rail 30A. The fixed edge 41 is fixed to the frame 12 a of the side opening 12. On the other hand, the free edge 42 is not fixed. The second curtain 40 </ b> B has the same configuration as the first curtain 40 </ b> A, and a fixed edge is fixed to the frame 12 a of the side opening 12.

  As shown in FIG. 1, when both the first rail 30A and the second rail 30B are in the lying posture, the first curtain 40A and the second curtain 40B are deployed by their own weight. Thereby, the curtain device 1 is closed and the side opening 12 is closed. On the other hand, as shown in FIG. 2, when both the first rail 30A and the second rail 30B are in the standing posture, the first curtain 40A and the second curtain 40B are folded by their own weight. As a result, the curtain device 1 opens, and the side opening 12 is opened.

  In addition, the material of the first curtain 40A and the second curtain 40B is not particularly limited, but transparent vinyl is preferable. If the first curtain 40A and the second curtain 40B are transparent, the state inside the booth AA can be confirmed even when the curtain device 1 is closed.

  As described above, the first rail 30A is provided with the first closing plate 39A. When the first rail 30A is in the lying posture, a gap is generated between the first rail 30A and the top plate 13. This gap is closed by the first closing plate 39A. Similarly, the second closing plate 39B provided on the second rail 30B closes the gap between the second rail 30B in the lying posture and the top plate 13.

  As described above, if the first closing plate 39A and the second closing plate 39B are provided, even if the first rail 30A and the second rail 30B are in the lying posture, the position between the first rail 30A and the top plate 13 and the second The gap between the rail 30B and the top plate 13 is closed. Therefore, the obstruction of the booth AA can be improved.

  As shown in FIG. 1, when the first rail 30A and the second rail 30B are both in the lying posture, the tip of the first rail 30A intersects with the tip of the second rail 30B, and the space therebetween is closed. Therefore, the vicinity of the free edge 42 of the first curtain 40A and the vicinity of the free edge of the second curtain 40B overlap. Thereby, the closing property of the booth AA when the curtain device 1 is closed can be improved.

  On the other hand, as shown in FIG. 2, when both the first rail 30A and the second rail 30B are in the standing posture, the space between the distal end of the first rail 30A and the distal end of the second rail 30B opens. The gap formed at this time between the tip of the first rail 30A and the tip of the second rail 30B is referred to as “wire rope passage section Ib”.

  The wire rope passage section Ib and the connection section Ia of the upper opening 14 are substantially the same at the horizontal position (position in the x direction). Note that the wire rope passage section Ib and the connection section Ia only need to overlap at the horizontal position. The wire rope passage section Ib and the connection section Ia may be arranged so as to be shifted in the horizontal direction. One section may include the other section.

  Thus, when the curtain device 1 is opened, the wire rope passage section Ib is formed. The wire rope WR of the crane can be passed through the wire rope passage section Ib, and can enter the upper opening 14 from the connection section Ia. Therefore, the flexible container bag FC can be carried in / out without interference between the curtain device 1 and the wire rope WR.

  The curtain device 1 includes an opening / closing drive unit 50 that opens and closes the curtain device 1. The opening / closing drive unit 50 has a winch 51. The winch 51 is provided on the side wall 11. The winch 51 may be a manual type or an electric type.

  A first rope 52 is wound out of the winch 51. The first rope 52 unwound from the winch 51 is guided to the first arm 36A by a pulley. The first end of the first rope 52 is connected to the eye plate 37 of the first arm 36A. The first rope 52 extends downward from the eye plate 37 of the first arm 36A. The winch 51 winds and unwinds the second end side of the first rope 52.

  The first end of the second rope 53 is connected to the eye plate 37 of the second arm 36B. The second rope 53 is guided by a pulley so as to extend downward from the eye plate 37 of the second arm 36B. The second rope 53 is guided along the outer periphery of the booth AA by a plurality of pulleys, and a second end is connected to an intermediate portion of the first rope 52.

  When the first rope 52 is wound by the winch 51, the first arm 36A and the second arm 36B are pulled downward, and the first rail 30A and the second rail 30B stand upright. When the first rope 52 is unwound by the winch 51, the first rail 30A and the second rail 30B fall down by their own weight. Thus, by operating the winch 51, the first rail 30A and the second rail 30B can be raised and lowered in synchronization. Further, this allows the curtain device 1 to be opened and closed.

  Note that the opening / closing drive unit 50 only needs to be able to raise and lower the first rail 30A and the second rail 30B, and the configuration is not limited to the above configuration. For example, each of the first rail 30A and the second rail 30B may be configured to be turned by an electric motor.

(how to use)
Next, a method of using the booth AA will be described.
First, the opening / closing drive unit 50 is operated to set the first rail 30A and the second rail 30B to the standing posture. Then, as shown in FIG. 2, the first curtain 40A and the second curtain 40B are folded, and the side opening 12 is opened. At the same time, a wire rope passage section Ib is formed between the first rail 30A and the second rail 30B.

  Next, the flexible container bag FC slung on the hook HK of the crane is carried into the booth AA. Here, the height of the flexible container bag FC may be lower than the top plate 13 and the first and second rails 30A and 30B. When the flexible container bag FC is conveyed rearward (y direction) while being positioned at the center of the booth AA in the width direction (x direction), the wire rope WR passes through the wire rope passage section Ib. Therefore, there is no interference between the curtain device 1 and the wire rope WR.

  Thereafter, when the flexible container bag FC is further transported rearward, the wire rope WR enters the upper opening 14 from the connection section Ia. Thereafter, the flexible container bag FC can be moved within a range where the wire rope WR is located in the upper opening 14. If the wire rope WR is stopped at the wire rope stop area Ws, the flexible container bag FC can be arranged at a position suitable for the opening operation. Thus, the flexible container bag FC can be carried into the booth AA without interfering with the wire rope WR.

  Next, the opening / closing drive unit 50 is operated, and the first rail 30A and the second rail 30B are set to the falling posture. Then, as shown in FIG. 1, the first curtain 40A and the second curtain 40B are deployed, and the side opening 12 is closed.

  In this state, the flexible container bag FC is opened. The contents dropped from the bottom opening of the flexible container bag FC are put into the hopper HP. Dust is generated by this opening operation. However, the booth AA can prevent the dust from scattering outside. Further, dust can be collected by the booth AA.

  After the opening operation is completed, the curtain device 1 is opened, and the flexible container bag FC is carried out of the booth AA. The unloading of the flexible container bag FC is performed in the reverse order of the loading. Also at the time of carrying out, the wire rope WR does not interfere with the curtain device 1.

[Second embodiment]
Next, a booth BB according to a second embodiment of the present invention will be described.
The curtain device 1 of the first embodiment is a double-opening type having two first and second curtains 40A and 40B. On the other hand, the booth BB of the present embodiment includes the single-opening curtain device 2 having only one first curtain 40A.

  As shown in FIGS. 5 and 6, the curtain device 2 has a first rail 30A. The length of the first rail 30 </ b> A is slightly longer than the width dimension of the side opening 12. A plurality of first runners 33A are provided on the first rail 30A. The first curtain 40A is suspended from the plurality of first runners 33A. The first curtain 40A has a size that covers substantially the entire side opening 12. The fixed edge 41 of the first curtain 40 </ b> A is fixed to the frame 12 a of the side opening 12. On the other hand, the free edge 42 is not fixed.

  The curtain device 2 is not provided with the second rail 30B, the second curtain 40B, and various members associated therewith in the first embodiment. Since the preliminary configuration is the same as that of the first embodiment, the same reference numerals are given to the same members, and description thereof will be omitted.

  As shown in FIG. 5, when the first rail 30A is in the lying posture, the first curtain 40A is deployed by its own weight. Thereby, the curtain device 1 is closed and the side opening 12 is closed. On the other hand, as shown in FIG. 6, when the first rail 30A is in the upright posture, the first curtain 40A is folded by its own weight. As a result, the curtain device 1 opens, and the side opening 12 is opened.

  When the first rail 30A is in the upright posture, a wire rope passage section Ib is formed outside the distal end portion. In the present embodiment, the wire rope passing section Ib is a section between the horizontal position (position in the x direction) of the distal end of the first rail 30A in the upright posture and the horizontal position of the distal end of the first rail 30A in the lying posture. It is. The distal end of the first rail 30A is located closer to the base end in the horizontal position in the standing posture than in the lying posture. Therefore, when the first rail 30A is in the standing posture, a wire rope passage section Ib in which the first rail 30A and the wire rope WR do not interfere with each other is formed.

  The wire rope passage section Ib and the connection section Ia of the upper opening 14 overlap at a horizontal position. In the present embodiment, the connection section Ia is included in the wire rope passage section Ib.

  Also in the present embodiment, when the first rail 30A is in the upright posture, the first curtain 40A is folded and the wire rope passage section Ib is formed. By passing the wire rope WR hanging the flexible container bag FC through the wire rope passage section Ib, the curtain device 2 does not interfere with the wire rope WR.

  After the wire rope WR has passed through the wire rope passage section Ib, the wire rope WR can enter the upper opening 14 from the connection section Ia. Therefore, the flexible container bag FC can be carried into the booth BB without interfering with the wire rope WR. Similarly, the flexible container bag FC can be carried out of the booth BB without interfering with the wire rope WR.

[Other embodiments]
The booth according to the present invention is not limited to the use surrounding the space where dust is generated as in the above embodiment. The booth can be used for enclosing a space where atmosphere control such as cooling and heating is performed, or can be used for enclosing a simple space where no atmosphere control is performed.

  Further, the curtain device according to the present invention does not necessarily need to be provided at the opening of the booth. The curtain device, alone or in combination with other partitions, can be used to externally partition a particular area.

  Therefore, the suspended load of the crane is not limited to the flexible container bag FC. It may be another container such as a drum, or a transported material other than the container.

AA, BB Booth 11 Side wall 12 Side opening 13 Top plate 14 Upper opening 1, 2 Curtain device 30A First rail 33A First runner 40A First curtain 30B Second rail 33B Second runner 40B Second curtain

Claims (7)

A first rail that rises and falls so that the tip moves up and down around the base end;
A plurality of first runners running along the first rail;
A first curtain suspended by the plurality of first runners,
When the first rail is in a falling posture in which the first rail is lowered from the base end toward the distal end, the first curtain is deployed by its own weight,
When the first rail is in an upright posture rising from the base end toward the distal end, the first curtain is folded by its own weight, and a wire rope passage section is formed outside the distal end. Curtain device characterized by the above-mentioned. A second rail that rises and falls so that the tip moves up and down around the base end;
A plurality of second runners running along the second rail;
A second curtain suspended by the plurality of second runners,
When the second rail is in a falling posture in which the second rail is lowered from the base end toward the tip end, the second curtain is deployed by its own weight,
When the second rail is in an upright posture that rises from the base end toward the distal end, the second curtain is folded by its own weight,
The first rail and the second rail are disposed such that the distal ends face each other,
When the first rail and the second rail are in the lying posture, the space between the distal end of the first rail and the distal end of the second rail is closed,
When the first rail and the second rail are in the upright posture, the gap between the tip of the first rail and the tip of the second rail is opened to form the wire rope passage section. The curtain device according to claim 1, wherein: The curtain device according to claim 2, further comprising an opening / closing drive unit that raises and lowers the first rail and the second rail. A first arm extending from the base end of the first rail;
A second arm extending from the base end of the second rail.
The opening and closing drive unit includes:
A first rope having a first end connected to the first arm;
A second rope having a first end connected to the second arm and a second end connected to an intermediate portion of the first rope;
4. The curtain device according to claim 3, further comprising: a winch that winds and unwinds the second end side of the first rope. A booth comprising the curtain device according to any one of claims 1 to 4,
A side wall surrounding a predetermined area and having a side opening reaching an upper edge;
A top plate bridged over the upper edge of the side wall,
The curtain device is provided in the side opening,
An upper opening connected to the side opening is formed in the top plate,
A booth, wherein a connection section of the upper opening with the side opening overlaps with the wire rope passage section at a horizontal position. The booth according to claim 5, further comprising: a first closing plate provided on the first rail and closing a gap between the first rail in the lying posture and the top plate. The booth according to claim 5, further comprising an exhaust pipe for dust collection connected to the side wall or the top plate.

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