JPH0745279Y2 - Opening and closing device for the curtain - Google Patents

Description

[Detailed description of the device]

[0001]

INVENTION The present invention relates, on the opening and closing device of緞book.

[0002]

2. Description of the Related Art As switchgear large veil of conventionally緞book had kicked as Takushiageru the drop curtain with a plurality of hanging members attached to the drop curtain. Alternatively, a method of sequentially winding from the upper end of the curtain has been adopted.

[0003]

In the above-mentioned conventional device, a space for installing the winding mechanism of the hanging member called a grape is required at the upper part of the curtain, and it is a passage for the operator from the viewpoint of maintenance. It needed a space that could be.
Moreover, in order to smoothly pull up the curtain, the hoisting mechanism is complicated and the device is expensive.

Therefore, it is difficult to secure a large space as described above in a stage such as a small theater or an inn, and economically, it has not been possible to install a curtain.

[0005] In the case of the structure will take sequentially wound from above the drop curtain, because it must hoist while borne on the total weight of the drop curtain in shaft comprising its winding shaft, at the same time the take-up motor when the diameter of the shaft increases Also, high output was required, and the equipment was large-scale. Also, opening and closing time
It was hanging. Opening / closing of JP-A-58-36517
Opening and closing device that winds the membrane material around the shaft at the lower end like a device
Although there is also, there is a roll with a large tuft at the bottom
It was not possible to use it and it was not usable.

The present invention has been made in view of the above problems, and its problem is a very simple structure that does not require a space for arranging the hoisting mechanism of the curtain , and is easy to maintain and high speed. to enable opening and closing, yet to provide a switchgear inexpensive緞book.

[0007]

SUMMARY OF THE INVENTION The above object gist of the present invention which solves the can 1) tress the lower side fixed to a high position upper side of緞book that vertical, horizontal at an intermediate position of the upper and lower sides of the thick curtain The shaft supported by the above is fixed to the back surface of the curtain , guides for holding both ends of the shaft vertically movable are provided, drive means for rotating the shaft is provided, and the curtain is wound around the intermediate shaft <br /> it the switchgear 2) drop curtain of緞book, wherein the lower side direction, moreover the 1) opening and closing device 3緞book, wherein the decor pulling means for pulling evenly along the lower side) characterized in that said that stretching the spring to always maintain a horizontal largely offset by the shaft the weight of the driving means for rotating the shaft at one end portion of the shaft 1) or 2)緞book switchgear according 4 ) Driving the weight for uniform weight correction In switchgear緞book according to any one of 1) to 3), characterized in that arranged on the drop curtain under <br/> end opposite to the.

[0008]

SUMMARY OF Invention The present invention is to secure the top edge of緞book to a predetermined position, the
A shaft supported horizontally at an intermediate position of the upper side and the lower side of the drop curtain is fixed to the drop curtain back surface, a guide for holding the opposite ends of the shaft vertically movably, further comprising a drive means for rotating said shaft A feature of the present invention is that the shaft fixed to the back surface of the center of the curtain is rotated by a driving means to wind the curtain from the central portion.

[0009] That is, if rotating the shaft, because the shaft is fixed to the central portion of the drop curtain, winding simultaneously the upper side portion when the lower side portion of the drop curtain is wound on the shaft, the shaft It will gradually roll up. In other words, the center of the curtain is rolled up from above and below at the same time.
Since it is wound in the unwound state, the winding time can be halved as compared with the method of winding the whole shaving net on one side. At the same time the bottom edge of the curtain
You can leave the tufts at the end without winding the tufts.
Will be lost.

[0010] Also, since the total weight of the drop curtain regardless of the winding amount of the drop curtain will be responsible in anchored upper portion, lightweight and small-sized pipe member for not applied load on the shaft to be winding center etc. Is enough. At the same time, since the shaft rotating drive means may be of small output, the structure of the opening / closing device is extremely simple, maintenance is easy, and the manufacturing cost can be kept low.

Further, in the present invention, since the shaft itself, which is the center of winding, is wound and advanced, by providing a means for pulling the curtain material downward and evenly along the lower side of the curtain , the curtain is attached to the curtain . It is possible to wind up the curtain without wrinkling or uneven winding.

Further, since the driving means for rotating the shaft may have a small output, only one driving means may be connected to one end of the shaft. In that case, an eccentric load may act on the shaft due to the weight of the driving means and the shaft may tilt. Therefore, a spring that cancels the eccentric load may be stretched to keep the shaft horizontal, thereby preventing the shaft from tilting. It is possible to prevent it in advance and avoid uneven winding. Further, a weight having substantially the same weight as that of the driving means may be arranged at the lower end of the cloth on the side opposite to the driving means.

[0013]

Embodiments will be described below with reference to the drawings. FIG. 1 is an overall back view showing an embodiment, and FIG. 2 is A- in FIG.
A sectional view, FIG. 3 is an explanatory view of a main part showing an example of tensioning a spring, FIG. 4 is an explanatory view of a main part showing a winding process of an embodiment, and FIG. 5 is an explanatory view showing an arrangement example of weights.

In this embodiment, the curtain 1 which opens and closes in the vertical direction
Here is an example applied to. As the curtain material 2 of the curtain 1, a lining 2b is entirely adhered to the back surface of the covering material 2a, so that the curtain material 2 is not wrinkled or deformed due to winding.
Further, the curtain material 2 firmly fixes the upper side 3 thereof to support the entire weight of the curtain material 2, and hangs the lower side 4 thereof.

A shaft 5 is laid horizontally and rotatably in the center of the back surface of the curtain material 2, and the shaft 5 and the curtain material 2 are fixed by a pin 6. A motor 7 is connected to one end of the shaft 5, and the switch 5 arranged on the rectangular body 8 of the building can rotate the shaft 5 forward and backward through the motor 7. Further, both ends of the shaft 5 are held by guides 10 so as to be vertically movable. In the figure, 11a, 11
Reference numeral b is a sliding bearing.

Further, in this embodiment, since the curtain material 2 is smoothly wound and unwound, the self weight of the motor 7 is prevented so that an unbalanced load acts on the shaft 5 due to the self weight of the motor 7 and the shaft 5 does not tilt. The motor 7 is pulled upward by stretching the spring 12 that substantially cancels the above. It should be noted that the wire 12 is connected to the spring 12 so that the pulling force by the spring 12 can always pull up the motor 7 with a constant magnitude regardless of the upward or downward movement of the shaft 5 as it winds up. It is configured to be wound as the number of 7 rises. Reference numeral 14 is a winding cylinder.

Further, in this embodiment, the end pipe 15 is attached to the lower side 4 of the curtain material 2, and the curtain material 2 is evenly pulled by the own weight of the end pipe 15 so that uneven winding or the like does not occur.

The present invention is not limited to the above embodiment. For example, in order to maintain the shaft horizontal, a weight 16 having a weight substantially equal to the weight of the motor 7 may be provided at the end of the end pipe 15 opposite to the motor 7, as shown in FIG. Further, the rotation driving means of the shaft may be driven via a chain or the like without the structure of directly connecting the motor. Further, driving means may be arranged at both ends of the shaft or the driving force may be transmitted. In that case, it is convenient that the shafts are kept parallel to each other. Further, when a simpler structure is required for the screen, etc., a coil spring can be used as the rotation driving means for the shaft.

[0019]

As described above, according to the present invention,
The winding mechanism of the curtain can be configured very simply, and the curtain can be installed without securing the space above, so the curtain can be installed even in a small theater with a low ceiling or the stage of an inn. Moreover, maintenance is easy, it can be constructed at low cost, and
It can be opened and closed in half the time compared to the winding type
It

[Brief description of drawings]

FIG. 1 is an overall back view showing an embodiment.

FIG. 2 is a sectional view taken along line AA of FIG.

FIG. 3 is an explanatory view of essential parts showing an example of a reverse moment force generating means.

FIG. 4 is an essential part explanatory view showing a winding process of the example.

FIG. 5 is an explanatory diagram showing an arrangement example of weights.

[Explanation of symbols]

 1 curtain 2 curtain material 3 upper side 4 lower side 5 shaft 6 pin 7 motor 8 rectangular shape of building 9 switch 10 guide 11 bearing 12 spring 13 wire rod 14 winding cylinder 15 end pipe 16 weight

Claims (4)

[Scope of utility model registration request] The method according to claim 1] bunch the lower side fixed to the high position the edges over the drop curtain was vertical, to secure the horizontally supporting the shaft at an intermediate position of the upper and lower sides of the thick curtain to drop curtain back surface, both end portions of the shaft A guide for holding the shaft up and down is provided, a drive means for rotating the shaft is provided, and a curtain is wound around the intermediate shaft.
緞book of the opening and closing device according to claim that you Nikki come. 2. A drop curtain in lower direction, moreover緞book switchgear according to claim 1, characterized in that arranged pulling means for pulling evenly along the bottom side. 3.緞book according to claim 1 or 2, characterized in that the stretched spring to always maintain a horizontal largely offset by the shaft the weight of the driving means for rotating the shaft at one end portion of the shaft opening and closing device. 4. The weight compensating weight is arranged at the lower end of the cloth on the side opposite to the driving means.
緞Book switchgear according to any one of.