JP3196362B2 - Stage suspension mechanism - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is applied to a hanging mechanism as a stage device used for installing a backdrop or a screen on a stage so as to be stowable, particularly when a sufficient storage space cannot be secured above the stage. And a suitable hanging mechanism.

[0002]

2. Description of the Related Art As is well known, above a general stage, there is a space called a fly for raising and storing various devices necessary for the performance, for example, lighting equipment, a backdrop, a screen, and the like. Is secured. A large number of batons are provided on the frise so as to be able to move up and down, and the above-mentioned devices are suspended in advance in these batons, and the scene change is quickly performed by raising and lowering a predetermined baton according to the effect. Like that.

[0003]

By the way, the height dimension of the fly is more than the height dimension of the backdrop curtain (that is, more than the height dimension of the stage opening) so that the backdrop curtain or the screen can be pulled up and stored as it is. However, in small theaters and halls newly constructed in recent years, the height of the fly may not be sufficiently secured due to various restrictions. In this case, since it is impossible to pull up and store a large item such as a backdrop curtain or a screen as it is, there is a problem that the contents of the production and the program are restricted.

As a countermeasure in such a case, for example, it is conceivable to wind up the background curtain like a roll curtain. It is not always easy and practical to wind up a backdrop of dimensions quickly and reliably.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and provides a hanging mechanism capable of installing a backdrop or a screen in a stowable manner even when the height of a fly cannot be sufficiently secured. It is intended to be.

[0006]

In order to achieve the above object, a hanging mechanism according to the first aspect of the present invention is provided with a pair of rotatable members on the upper sides on both sides of a stage which can rotate about a horizontal axis along the width direction of the stage. The pulleys are arranged to face each other, and the wire ropes connected endlessly from the pulleys are suspended so as to be able to circulate, respectively, and both ends of two long batons corresponding to the width of the stage in the middle of the wire ropes. And the batons are laid horizontally and in parallel with each other at an interval, and the upper and lower edges of the backdrop are connected to the two batons, respectively. Is stretched between the batons, and the pulley is rotated in both forward and reverse directions by a drive source to circulate the wire rope while reversing the wire rope back and forth at its lower limit position. From the use position facing the stage it is obtained by configured to house draw the stage back side.

A hanging mechanism according to a second aspect of the present invention is provided with a plurality of hanging mechanisms sequentially including the hanging mechanism according to the first aspect. Are selectively arranged at a use position facing the stage, and another background curtain is stored behind the background curtain.

Further, according to a third aspect of the present invention, a long baton corresponding to the width of a stage is driven by a driving source between a pair of pulleys in the first aspect. It is provided movably in the front-back direction of the stage, and a screen of the size corresponding to the background curtain is hung on the baton, and the screen is stored behind the background curtain by moving the baton backward. In addition, the screen is arranged at a use position in front of the backdrop curtain by moving the baton forward.

[0009]

According to the first aspect of the present invention, when the backdrop is used, the backdrop is arranged at a position facing the stage, but when not used, the pulley is rotated by the drive source to circulate the wire rope, thereby circulating the backdrop. The back curtain is pulled down and retracted to the back of the stage for storage. In the invention of claim 2, a plurality of background curtains are installed by a plurality of hanging mechanisms, and any one of the background curtains is selectively used to face the stage and used for other background curtains. The curtain is stored behind it. Further, in the invention according to claim 3, the screen provided behind the stage together with the hanging mechanism is movable forward and backward, so that the screen is moved only in front of the background curtain when not in use, and behind the background curtain when not in use. Store it on the side.

[0010]

Embodiments of the present invention will be described below with reference to the drawings. 1 to 8 show a first embodiment. FIG. 1 is a side view of a stage on which a hanging mechanism of the present embodiment is installed, FIG. 2 is a front view thereof, and FIG. 3 is a schematic configuration of the hanging mechanism. Perspective view, FIG.
6 to 6 are partially enlarged views, and FIGS. 7 and 8 are views showing a usage form thereof.

Stage 1 to which the hanging mechanism of this embodiment is applied
As shown in FIGS. 1 and 2, a flys 2 which is a space for accommodating various devices is secured above the flys 2, and the height dimension of the flys 2 is such that devices such as lighting fixtures are accommodated. Although it can be done, the backdrop is simply too small to store. The present embodiment is for installing a backdrop that cannot be stored in the flys 2 as it is so as to be able to be stored behind the stage 1, and is configured in substantially the same manner to install three backdrops. The three hanging mechanisms 3 (3a, 3b, 3c) are provided so as to be sequentially included. Since these three suspension mechanisms 3 are basically the same except that the size of the pulley 4 and the length of the wire rope 5 are slightly different as described below, the same components are used in the following description. With the same number,
They are distinguished by subscripts a, b, and c as necessary.

In this embodiment, as shown in FIG. 1, a hanging mechanism 3b is provided inside a hanging mechanism 3a, and a hanging mechanism 3c is further provided inside the hanging mechanism 3b.

Referring to FIG. 3, the structure of each suspension mechanism 3 will be described. In FIG. 3, reference numeral 4 denotes a pair of pulleys provided on both upper sides of the stage 1. The pulleys 4 and 4 are rotatable in both forward and reverse directions about a horizontal axis along the width direction of the stage 1 (the front and back sides of the paper in FIG. 1 and the left and right directions in FIG. 2), and are arranged to face each other. I have.
From the pulleys 4, 4, wire ropes 5, 5 connected in an endless state are respectively suspended. Two long truss-shaped batons 6 and 6 corresponding to the width of the stage 1 are connected to both ends of the wire ropes 5 and 5, respectively, so that the batons 6 and 6 are vertically moved. At a distance from each other and in a substantially horizontal state. Then, the upper edge of the background curtain 7 is connected to the upper baton 6 and the lower edge of the background curtain 7 is connected to the lower baton 6, so that the batons 6, 6
A backdrop 7 is stretched between them. The back curtain 7 is large enough to cover the entire width of the stage 1 and cover the entire back of the stage 1. Reference numeral 8 denotes wire ropes 5, 5
Another baton attached as a balance weight to connect the two and balance the left and right.

The pulleys 4 and 4 are rotated in both forward and reverse directions synchronously by motors 9 and 9 as drive sources, respectively. By rotating the wire ropes 5 and 5 in the same direction at the same speed, the wire ropes 5 and 5 are fed from the pulleys 4 and 4 and circulate. By rotating the pulleys 4 and 4 to circulate the wire ropes 5 and 5, the two batons 6 and 6 supported in the middle of the wire ropes 5 and 5 maintain a substantially horizontal state. At the front of the stage 1, the wire ropes 5, 5 are turned backward at the lower limit position of the wire ropes 5, and also moved up and down at the back of the stage 1, with the background curtain 7 attached between the batons 6, 6.
Also rises and falls at the lower limit position of the wire ropes 5, 5 while reversing back and forth. As the pulley 4, as shown in FIG. 6, it is preferable to adopt a friction type of a type in which a driving force is transmitted by frictional force to feed out the wire rope 5, but the wire rope 5 slips with respect to the pulley 4. The angle θ of the groove of the pulley 4 is 30 to
It is appropriate to set the angle to about 35 degrees.

Each of the three suspension mechanisms 3 is constructed as described above, but as shown in FIGS. 1 and 2, the pulleys 4a, 4b in the respective suspension mechanisms 3a, 3b, 3c.
The outer diameters of b and 4c are set larger, and the lengths of the wire ropes 5a, 5b and 5c are set longer as the outer ones. And each pulley 4a, 4b, 4c in each hanging mechanism 3a, 3b, 3c,
As shown in FIGS. 4 and 5, in a state of being arranged in one row up and down and supported by the bracket 10, it is fixed to the ceiling surface behind the stage 1, whereby each of the hanging mechanisms 3a,
3b and 3c are installed with the hanging mechanism 3b inside the hanging mechanism 3a and further with the hanging mechanism 3c inside.

Each of the hanging mechanisms 3a, 3 thus installed
b and 3c are two motors 9a, 9b and 9 respectively.
c allows the two wire ropes 5a, 5b, 5c to be independently circulated, whereby the background curtain 7 in each of the hanging mechanisms 3a, 3b, 3c can be circulated.
a, 7b and 7c can be independently raised and lowered. As shown in FIG. 1, an opening 12 leading to a pit 11 under the stage is formed substantially over the entire width of the stage 1 at the rear of the floor of the stage 1, and the wire ropes 5a and 5b are passed through the opening 12. , 5c have their lengths set such that the lower ends of the pits 11 enter the pits 11.

With the above arrangement, in the present embodiment, any one of the three background curtains 7a, 7b, 7c can be selectively used and the other one can be stored in the rear side thereof, and It is possible to quickly switch to another one according to the progress. That is, as shown in FIG. 1, when all of the background curtains 7a, 7b, and 7c are arranged so as to overlap the use position on the front side of the stage 1, only the frontmost background curtain 7a is positioned. Faces the stage 1 and can be seen from the audience seat 13, and the other background curtains 7 b and 7 c are hidden behind and cannot be seen from the audience seat 13.

From this state, by driving the motor 9a of the outer hanging mechanism 3a to rotate the pulley 4a, the wire rope 5a is extended so as to lower the background curtain 7a, and as shown in FIG. Baton 6a is stage 1
If it is stopped when the floor position is reached, the upper half of the background curtain 7a is stored in the pit 11 and the lower half is inverted in the pit 11 and stored on the back side of the stage 1. Become. In a state where the background curtain 7a is disposed in such a storage position, the background curtain 7b of the intermediate hanging mechanism 3b faces the stage 1, and the other background curtains 7c and 7a are hidden behind. It will be invisible from the audience 13.

Further, from this state, if the background curtain 7b is arranged in the storage position shown in FIG. 8 by similarly driving the motor 9b of the intermediate hanging mechanism 3b, the background curtain in the inner hanging mechanism 3c is moved. 7c faces the stage and the others are hidden behind it.

As described above, according to the present embodiment, any one of the background curtains 7 is pulled down from the use position and housed behind the other background curtain 7, so that the height dimension of the flys 2 is sufficient. It is suitable to be applied to a stage where it is impossible to raise and store the backdrop as it is because it cannot be secured, and a simple operation of selecting and driving the motor 9 of one of the hanging mechanisms 3 Since it is possible to easily switch to another background curtain just as in the related art, it is possible to respond to a prompt scene change. In addition, since the wire rope 5 is suspended from the pulley 4 and the backdrop 7 is attached to the wire rope 5 via the baton 6, the facility cost and the maintenance cost do not increase.

The first embodiment of the present invention has been described above.
Next, a second embodiment will be described with reference to FIGS.
The second embodiment has a stage 1 in addition to the configuration of the first embodiment.
A screen 20 is provided at the rear of the screen, and is arranged in front of each background curtain 7 when the screen 20 is used, and is stored behind the background curtain 7 when not in use.

As shown in FIG. 11, the screen 20 is formed by stretching a screen cloth 22 on a frame 21 formed of a truss-shaped member, and can cover almost the entire back surface of the stage 1 in the same manner as the above-mentioned background curtain 7. It is the size. This screen 20 is hung from a baton 23 made of pipe material, and the baton 23 can be swung in the front-rear direction between the respective pulleys 4 and 4 on the ceiling surface behind the stage 1 as shown in FIG. By being attached, the screen 20 is installed movably back and forth behind the stage.

That is, as shown in detail in FIGS. 12 and 13, the ends of the arms 24, 24 are fixed to both ends of the baton 23, respectively.
The base end of 4 is rotatably supported by the lower portions of brackets 25 fixed to the ceiling surface and located inside the brackets 10 supporting the hanging mechanism 3, and Motors 26, 26 are connected to the rotating shaft, and the motors 26, 26 are driven to
The baton 2 is rotated by rotating the stage 4 in the front-back direction of the stage 1.
3 swings in the front-back direction of the stage, and the screen 20 moves in the front-back direction.

When the screen 20 is not used, the arm 24 is rotated rearward, the screen 20 is arranged at the rearmost position of the stage 1 and stored behind the backdrop curtain 7, and the screen 20 is moved. In use, the screen 20 is moved to the front side by rotating the arm 24 to the front side, and is disposed on the front side of each of the hanging mechanisms 3, but the screen 20 is moved in such a manner. In this case, the hanging mechanisms 3 are operated together in order to prevent interference with the hanging mechanisms 3.

The operation procedure will be described with reference to FIGS. FIG. 14 shows a state in which the front screen 7a is used without using the screen 20, and in this state,
As described in the first embodiment, only the backdrop curtain 7a is visible from the audience, and the other backdrop curtains 7b and 7c and the screen 20 are provided.
Is hidden behind the backdrop 7a. From this state, to use the other background curtains 7b and 7c by changing the scene, as described in the first embodiment, the background curtain 7b and 7c are used.
A and 7b may be lowered to bring each of the hanging mechanisms 3a, 3b and 3c into the state shown in FIG. 7 or FIG.

Next, to use the screen 20, first, the state shown in FIG. 14, that is, all the background curtains 7a, 7
b, 7c are arranged in front of the stage 1 and all of the batons 8a, 8b, 8c as counterweights are placed on the screen 2.
No. 0 is retracted from the front and positioned near the stage floor, and then, as shown in FIG. 15, the arm 20 is rotated forward to pass the screen 20 between the left and right wire ropes 5. It is moved just behind the background curtain 7c. Next, as shown in FIG.
a, 7b and 7c are pulled down and placed in the storage position. Thereby, the backdrop curtains 7a, 7b, 7c and the baton 6a,
6b and 6c are retracted from the front of the screen 20,
Subsequently, the arm 20 is further rotated forward so that the screen 20 passes between the left and right wire ropes 5 and 5 and moves to the front of each background curtain 7 as shown in FIG. In this state, projection can be performed from the front side (seat side) of the screen 20, but when projection is performed from the rear side by the projector 30 installed on the rear side of the screen 20,
The positions of the background curtains 7 and the batons 6 and 8 may be adjusted by slightly raising the background curtains 7 so as not to interfere with the projection range. The storage of the screen 20 can be performed by a procedure reverse to the above.

As described above, in the second embodiment, when the screen 20 is not used, the screen 20 is stored behind the background curtain 7,
In use, the screen 20 is moved forward by passing between the hanging mechanisms 3, so that the stage 1 cannot be pulled up and stored in the flys 2 as it is.
This makes it possible to install the large-sized screen 20 without hindrance, and is particularly suitable for a stage where the height of the flys 2 cannot be sufficiently secured.

In each of the above embodiments, three hanging mechanisms 3 are provided to provide three background curtains 7a, 7b, 7c.
Although a, 3b, and 3c are provided, it goes without saying that the number can be appropriately increased or decreased according to the required number of background curtains. In addition, the pulleys 4 of the hanging mechanisms 3 are not necessarily arranged in a line in an up-down direction, but may be installed at different positions in the width direction of the stage 1 as shown in FIG. Further, in the second embodiment, as shown in FIG.
Although they are supported by 0 and 25, they can be changed by supporting them by a common bracket.
FIG. 18 shows the pulley 4c and the baton 23 having a common bracket
This is an example in which the other pulleys 4a and 4b are supported by a common bracket 32.

[0029]

As described above, according to the first aspect of the present invention, the pulley is rotated by suspending the wire rope from the pulley so as to be able to circulate, and stretching the backdrop to the wire rope via the baton. By circulating the wire rope, the back curtain is retracted from the position facing the stage to the back of the stage and stored, so even if the height of the fly can not be secured sufficiently, it can be used as a background. The curtain can be installed so as to be stowable, and is suitable for use in such a stage. According to the second aspect of the present invention, a plurality of background curtains are provided by a plurality of hanging mechanisms, so that one of the background curtains is selected and used, and the other background curtain is stored in the rear side thereof. You can change scenes quickly. Further, in the invention according to claim 3, in addition to the above configuration, the screen is installed so as to be movable back and forth, so that it can be used by moving the screen in front of the background curtain,
When not in use, it can be stored behind the backdrop.

[Brief description of the drawings]

FIG. 1 is a side view of a stage on which a hanging mechanism according to a first embodiment of the present invention is installed.

FIG. 2 is a front view of the same.

FIG. 3 is a perspective view showing a schematic configuration of the hanging object mechanism.

FIG. 4 is an enlarged side view showing a structure for mounting a pulley in the hanging object mechanism.

FIG. 5 is an enlarged front view of the same.

FIG. 6 is a partial sectional view of the pulley.

FIG. 7 is a partial side view showing a usage form of the hanging object mechanism.

FIG. 8 is a partial side view showing another use mode of the hanging object mechanism.

FIG. 9 is a side view of a stage on which a hanging mechanism according to a second embodiment of the present invention is installed.

FIG. 10 is a front view of the same.

FIG. 11 is a perspective view showing a schematic configuration of a screen in the hanging object mechanism.

FIG. 12 is an enlarged front view showing a structure for attaching a baton in the hanging object mechanism.

FIG. 13 is an enlarged side view of the same.

FIG. 14 is a partial side view showing a usage form of the hanging object mechanism.

FIG. 15 is a partial side view showing the movement operation of the screen.

FIG. 16 is a partial side view showing the movement operation of the screen.

FIG. 17 is a partial side view showing another use mode of the hanging object mechanism.

FIG. 18 is a partially enlarged front view showing another embodiment of the present invention.

[Explanation of symbols]

 1 Stage 2 Fries 3 (3a, 3b, 3c) Hanging mechanism 4 (4a, 4b, 4c) Pulley 5 (5a, 5b, 5c) Wire rope 6 (6a, 6b, 6c) Baton 7 (7a, 7b, 7c) ) Backdrop 9 (9a, 9b, 9c) Motor (drive source) 20 Screen 23 Baton 26 Motor (drive source).

Claims (3)

(57) [Claims] 1. A pair of pulleys rotatable around a horizontal axis along the width direction of the stage are arranged at upper portions on both sides of the stage so as to face each other, and wire ropes connected endlessly from the pulleys are circulated respectively. The two long batons corresponding to the width of the stage are connected to each other at two ends of the wire rope, and the batons are parallel to each other and approximately horizontal with a gap between them. And the upper and lower edges of the backdrop are connected to the two batons, respectively, so that the backdrop is stretched between the batons, and the pulley is driven in both forward and reverse directions by a drive source. By rotating and circulating while reversing the wire rope back and forth at its lower limit position, the background curtain is configured to be drawn from the use position facing the stage to the back side of the stage and stored. A stage hanging mechanism characterized by: 2. A plurality of the hanging mechanisms according to claim 1 are sequentially included, and one of the backdrops provided in each of the hanging mechanisms selectively faces the stage. A stage hanging mechanism, wherein the stage hanging mechanism is arranged at a use position and is configured to accommodate another background curtain behind the background curtain. 3. A long baton corresponding to a width dimension of a stage is provided between a pair of pulleys of the hanging mechanism according to claim 1 or 2 so as to be movable in a front-rear direction of the stage by a driving source. A screen having a size corresponding to the background curtain is suspended from the baton, and the screen is stored behind the background curtain by moving the baton rearward, and the baton is moved forward. A stage hanging mechanism, wherein the screen is arranged at a use position in front of a backdrop.