JPH0322465Y2 - - Google Patents

Description

[Detailed description of the invention] This invention is a curved door drawing device that draws or approaches two curved doors in an arc along an entrance and exit, and a curved door drawing drive device that includes a curved door driving device. Regarding.

As a conventional drawing device for curved doors of this type, there is a device related to Utility Model Application No. 12992/1987, which was previously proposed by the applicant. This device has a plurality of endless rotary moving members wound around two reversing pulleys that are rotatably attached near both ends of the entrance and exit so that they are approximately parallel to each other and have an arc shape that approximates the curved surface of the entrance. One curved door is movably guided by a guide pulley, and one curved door is connected to one side of the rotary members arranged in two substantially parallel rows, and the other curved door is connected to the other end of the same rotary movable member. It is what it is.

In this conventional device, when one curved door is moved, the other curved door also moves, so by providing a drive device on only one of the two curved doors, it is possible to draw the curved doors or move them closer together. However, on the other hand, since the rotationally moving member must be guided in an arc shape that approximates the curved surface of the entrance/exit, a large number of guide pulleys are required, resulting in an increase in the manufacturing cost of the device. Noise is generated due to the rotation of many guide pulleys, and when used on a curved door with a large radius, the rotationally moving member made of wire etc. is guided by the shaking of the moving member as the curved door itself moves. There is a risk that the door may come off the pulley, and the coupling fitting of the curved door fixed to the rotationally moving member becomes an obstacle, making it impossible to prevent the guide pulley from coming off. When the rotational movement member is located between the two, the rotational movement member is partially pulled strongly and the tension becomes uneven, resulting in various drawbacks such as a shortened life span of the rotational movement member. Furthermore, when a drive device is provided on one of the two curved doors and the other curved door is simultaneously moved in the opening/closing direction by moving this curved door in the opening/closing direction, the endless rotary moving member moves between the two curved doors. Since it moves while being guided by a reversing pulley and a large number of guide pulleys, it has the disadvantage that the resistance increases accordingly and a driving source with a large output is required.

This invention was made in view of the above-mentioned circumstances, and aims to eliminate the drawbacks of the conventional device, and its features are that the number of guide pulleys is reduced, and the traction member is There is almost no risk of it coming off the guide pulley, the durability of the traction member can be improved, and the output of the drive source can be small.

A preferred embodiment of this invention will be described in detail below with reference to the drawings.

In FIGS. 1 to 8, two curved doors 1
Connecting fittings 2a, 2a and 2 are provided above a, 1b.
Curved doors 1a, 1b and concentric guide plates 3a, 3b are fixed by b, 2b. and,
The connecting fittings 2 are attached to the arc-shaped door rails 4a and 4b installed above the entrance/exit (not shown) of the building.
Door wheels 5a, 5a and 5b, 5b rotatably fixed to a, 2a and 2b, 2b are guided,
The two curved doors 1a and 1b are movable in an arc shape. Near both ends above the entrance, there are two reversing pulleys 6a and 6b rotatably attached to the building at different heights, and further,
The curved door 1a of these two reversing pulleys 6a, 6b,
There are two rotatable guide pulleys 7a and 7b rotatably attached to a building in the middle of the convex side of 1b. One of the two guide pulleys 7a, 7b is connected to the two reversing pulleys 6b, 6.
It is installed so that the height position is almost the same as that of one reversing pulley 6b of a, and the other guide pulley 7b
The two reversing pulleys 6b and 6a and the two guide pulleys 7a and 7 are also installed so that the height position is almost the same as that of the other reversing pulley 6a.
b is mounted rotatably in the horizontal direction. 2
Inner protrusions 9a, 9b are provided at the inner ends of the convex outer peripheral surfaces of the guide plates 3a, 3b of the two curved doors 1a, 1b.
Outer protrusions 10a and 10b are provided at the outer end portions, respectively. The height positions of the inner protrusion 9a of one guide plate 3a and the outer protrusion 10b of the other guide plate 3b are approximately the same height as the reversing pulley 6a on the guide plate 3a side where the inner protrusion 9a is provided. Similarly,
The height position of the outer protrusion 10a of one guide plate 3a and the inner protrusion 9b of the other guide plate 3b is
It is approximately the same height as the reversing pulley 6b on the guide plate 3b side provided with the guide plate 3b. and two traction members 1
One traction member 11a of 1a and 11b
has one end fixed to the outer protrusion 10a of one guide plate 3a, and is wound around a guide pulley 7a and a reversing pulley 6b, which are located at approximately the same height as the outer protrusion 10a, and the other end is fixed to the other guide. It is fixed along the plate 3b to its inner protrusion 9b. Similarly, the other traction member 11b has one end fixed to the outer protrusion 10b of the other guide plate 3b, and has a guide pulley 7 located at approximately the same height as the outer protrusion 10b.
b and is wound around the reversing pulley 6a, and the other end is fixed to the inner protrusion 9a along one guide plate 3a. And these two reversing pulleys 6a, 6
b and the two guide pulleys 7a, 7b are set at the contact points P1a, P1b between the traction members 11a, 11b and the guide pulleys 7a, 7b, and the traction members 11a, 11.
Lengths L1a, L1b of the traction members 11a, 11b between the contacts P2a, P2b of the guide plates 3a, 3b
is always constant regardless of the open/closed position of the curved doors 1a, 1b, and the traction members 11a, 11b
and contact points P3b and P3a of the reversing pulleys 6b and 6a,
Traction members 11a, 11 between contact points P4b, P4a of traction members 11a, 11b and guide plates 3b, 3a
The lengths L2a and L2b of b are the curved doors 1a and 1b.
It is installed so that it is always constant regardless of the open/closed position. 12 are two reversing pulleys 6a, 6b
and the traction member 11a from the guide pulleys 7a, 7b,
This is a stopper provided adjacently as necessary to prevent 11b from falling off.

Above the guide plate 3a of one curved door 1a,
A drive device 8 is installed fixed to the building.
Both ends of drive traction members 8a are fixed to both ends of the guide plate 3a, which are spaced apart from each other by at least the opening/closing stroke of the curved door 1a. A driving wheel 8b and a driven wheel 8c are wound around the intermediate portion of the driving traction member 8a, which are provided in the tangential direction of the convex outer peripheral surface of the guide plate 3a. That is, the driving traction member 8a has one end fixed to the right end in the figure of the guide plate 3a, is guided along the guide plate 3a to the driving wheel 8b, and is wound around the driving wheel 8b and the driven wheel 8c, so that the driving traction member 8a is attached to the guide plate 3a. The other end is fixed to the left end in the figure of 3a. The drive wheel 8b is fixed to an output shaft 8d of the drive device 8, while the driven wheel 8c is rotatably fixed to the drive device 8. The upper portion 8a' of the driving traction member between the driving wheel 8b and one end of the guide plate 3a and the lower portion 8a'' of the driving traction member between the driven wheel 8c and the other end of the guide plate 3a are at the same height position. It is made so that it does not touch the guide plate 3a.

The operation of this invented device having such a configuration will be explained.

First, the two curved doors 1a and 1b are drawn in an arc shape from the closed state of the curved door shown in FIGS. 1 and 2 to the open state shown in FIGS. 3 and 4 in the opening direction, that is, the arrow mark. The case of moving in direction A or B will be explained with reference to FIGS. 5 to 8. When a passing body is detected by an object detector such as a matsuto switch or radio switch installed at the entrance,
Based on the detection signal, the driving wheel 8 of the driving device 8
b is rotated in the direction of arrow X. Then, the upper portion 8a' of the driving traction member is pulled by the driving wheel 8b, so that the curved door 1a moves in the opening direction of arrow A. At this time, the upper part 8a' of the driving traction member gradually moves away from the convex outer circumferential surface of the guide plate 3a in the tangential direction of the convex outer circumferential surface of the guide plate 3a, and rotates around the driving wheel 8b and the driven wheel 8c to pull the driving traction member. The member is fed into the lower part 8a″. However,
The end of the lower part 8a'' of the driving traction member is connected to the curved door 1a.
Since it is fixed to the outer end of the guide plate 3a, it is pulled and gradually comes into contact with the convex outer circumferential surface of the guide plate 3a, and the amount fed is returned. When the curved door 1a is moved in the direction of arrow A by the driving device 8 in this way, one end side is fixed to the inner protrusion 9b of the guide plate 3b of the curved door 1b, and the middle part is fixed to the guide plate 3b, as shown in FIG. 3b contacts the outer peripheral surface at a contact point P4b, is wound around the reversing pulley 6b and the guide pulley 7a, and the other end is connected to the outer protrusion 10a of the guide plate 3a of one curved door 1a.
Since the traction member 11a fixed to moves in the direction of arrow A, the curved door 1b is pulled by them and moves in the opening direction of arrow B. At this time, the other traction member 11b has no action of towing either of the curved doors 1a, 1b, but is only pulled by the curved door 1b and moves in the direction of arrow B.

In this way, the two curved doors 1b and 1a both move in the opening direction to open the entrance/exit. At this time, the arc-shaped arrows A and B of the curved doors 1a and 1b
Movement in the direction is achieved by moving the door wheels 5a, 5a rotatably fixed to the connecting fittings 2a, 2a and the connecting fittings 2b, 2.
This is done by guiding the door wheels 5b, 5b rotatably fixed to the arcuate door rails 4a, 4b.

Next, after the object has passed, the open state shown in Figures 3 and 4 is changed to the closed state shown in Figures 1 and 2.
A case will be described in which two curved doors 1a and 1b are closed by approaching each other in an arc shape. In this case,
It is only necessary to rotate the drive wheel 8b of the drive device 8 in the direction of the arrow Y. Then, the drive traction member lower part 8
a'' is towed by the driving wheel 8b via the driven wheel 8c, the curved door 1a moves in the direction of arrow C, which is the closing direction.Then, the lower part 8a'' of the driving traction member It gradually moves away from the convex outer circumferential surface, and the upper part 8a' of the drive traction member having a length corresponding to the distance comes into new contact with the convex outer circumferential surface of the guide plate 3a. At this time, as shown in FIG. 8, one end side is fixed to the inner protrusion 9 of the guide plate 3a of the curved door 1a, and the intermediate part contacts the convex outer peripheral surface of the guide plate 3a at a point P.
In order for the traction member 11b fixed to the outer protrusion 10b of the guide plate 3b of one curved door 1b which is in contact with the guide plate 3b at the point 4a and which is wound around the reversing pulley 6a and the guide pulley 7b and has the other end to move in the direction of the arrow D. , the curved door 1b is pulled and moves in the closing direction of arrow D. At this time, the other traction member 11a has no action of pulling either of the curved doors 1a, 1b, and is only pulled by the curved door 1b and moves in the direction of arrow C. In this way, the two curved doors 1a, 1b move toward each other, and the entrance/exit is closed.

In addition, the inner protrusions 9a, 9b and the outer protrusions 10a,
10b need not be provided at the inner and outer ends of the curved doors 1a and 1b, but may be provided closer to the inner side or the outer side. However, in that case, the opening/closing width of the two curved doors 1a, 1b is affected, and the closer the inner protrusions 9a, 9b and the outer protrusions 10a, 10b are inside the curved doors 1a, 1b, the smaller the opening/closing width. Become.

As explained above in the embodiments, according to this invention, first, in the closed state shown in FIG. It is circumscribed only by In the open state shown in FIG. 6, the inner protrusion 9b and the contact point P4b coincide, so that there is no circumscribing part to the guide plate 3b. On the other hand, the guide plate 3a has the same radius of curvature and the same width as the guide plate 3b. As a result, the traction member 11a, which is circumscribed to the guide plate 3b, is circumscribed by the warping guide plate 3a. The two guide boards 3a and 3b
The sum of the lengths of the traction member 11a circumscribed by the traction member 11a is always constant. Moreover, as described above, the length L1a of the traction member 11a between the contacts P1a and P2a, and the length L2 of the traction member 11a between the contacts P3b and P4b.
Since a is constant, the traction member 11a can always have a constant tension, and the opening and closing operations of the two curved doors 1a and 1b are performed smoothly and reliably.

The explanation is omitted for the other traction member 11b, but the same is true.

As is clear from the above explanation, according to this invention, the number of guide pulleys 7a and 7b only needs to be at least one each, so it is possible to reduce the manufacturing cost of the device, and also to reduce the number of guide pulleys 7a and 7b. Since there is no need to provide a guide pulley, almost no noise is generated due to its rotation. Furthermore, curved doors 1a, 1 with large radius
Even when used in the device shown in FIG.
a and 11b almost never come off. In addition, even in the unlikely event that the guide pulleys 7a and 7b and the reversing pulleys 6a and 6b come off easily due to special installation conditions, the stoppers 12 can be installed adjacent to the guide pulleys 7a and 7b and the reversing pulleys 6a and 6b.
This can be effectively prevented. Furthermore, since the tension of the traction members 11a, 11b is always constant regardless of the open/closed positions of the curved doors 1a, 1b, the durability of the traction members 11a, 11b can be improved. Furthermore, since the drive traction member 8a of the drive device 8 is wound around the drive wheel 8b and the driven wheel 8c on the same plane, the rotational force is reliably transmitted by the drive wheel 8b to the drive traction member 8a. Since the drive traction member 8a is wound in a direction perpendicular to the axles of the respective wheels 8b and 8c, the driving traction member 8a does not come off the driving wheel 8b and the driven wheel 8c, and is extremely quiet without generating any mechanical noise. Furthermore, the output of this drive device 8 is
Since the guide pulleys 7a and 7b can be reduced in size, driving energy can be saved.

In addition, since the drive device 8 can be installed independently of the curved door drawing device, when changing from a manual drawing device to an automatic type, the configuration of the curved door drawing device can be changed. The parts can be used as they are without any repair or improvement, and maintenance is also easy. Furthermore, if a drive source is attached to the reversing pulley 6a for rotational driving, since the mounting position of the reversing pulley 6a is almost fixed above both ends of the entrance/exit, various mounting spaces for the drive source are required. Although there are restrictions, the mounting position of the drive device 8 of this invention is limited to either one of the curved doors 1.
Since it only needs to be above a or 1b, there is an advantage that the range of selection of the mounting position is increased, and as a result, the range of selection of the type, such as the size of the drive device 8, is also increased.

[Brief explanation of drawings]

The drawings show an embodiment of this invented device, and Fig. 1 is a plan view of the main part when the curved door is closed, Fig. 2 is a front view of the main part, and Fig. 3 is a plan view of the main part when the curved door is opened. Figure 4 is a front view of the main parts, Figure 5 is an explanatory diagram of the state of one of the traction members when the curved door is closed, Figure 6 is an explanatory diagram of the same when it is opened, and Figure 7 is an explanatory diagram of the state of the other traction member when the curved door is closed. An explanatory diagram of the state of the traction member, and FIG. 8 are explanatory diagrams of the state when the traction member is opened. 1a, 1b... Curved door, 3a, 3b... Guide plate, 6a, 6b... Reversing pulley, 7a, 7b... Guide pulley, 8... Drive device, 8a... Drive traction member, 8b... Drive wheel , 8c...driven vehicle.

Claims (1)

[Claims for Utility Model Registration] In a curved door opening/closing device that opens or closes an entrance by separating two curved doors in an arc shape along the entrance or bringing them close to each other, each of the following: A curved door comprising one of two reversing pulleys rotatably mounted, a guide pulley rotatably mounted between these two reversing pulleys, and one end of each of the two reversing pulleys being provided at the upper part of the two curved doors. A traction member is fixed to the inner side of one of the two concentric guide plates, and the other end is fixed to the outer side of the other guide plate. The other reversing pulley and a guide pulley other than the guide pulley rotatably mounted between these two reversing pulleys, one end of which is fixed to the outside of one of the two guide plates. a curved door drawing device comprising a traction member whose other end is fixed to the inside of the other guide plate; and different height positions of both ends of the guide plate of one of the two curved doors. And, the above 2
Both ends of the driving traction member are fixed at positions where they do not overlap with the two traction members, and the driving traction member is attached to a driving wheel and a driven wheel provided in the tangential direction of the convex outer peripheral surface of the guide plate of the one curved door. and a drive device for a curved door formed by winding a member, so that only one of the two curved doors is moved in the opening/closing direction by the drive traction member as the drive wheel rotates. 1. A draw drive device for a curved door, wherein the other curved door also moves in the opening/closing direction following the movement of the other curved door.