JPH028113B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a drive mechanism for a curved door that opens and closes a curved doorway.

As a conventional device of this kind,
As shown in the publication, one chain is curved along the curved surface of the door on a plane including the chain roller axis and fixed to the upper part of the curved door, while the output shaft of a drive source fixed to the building is fixed to the top of the curved door. There is a device that engages with an attached chain wheel and rotates the chain wheel to drive a curved door. According to this device, since the chain is curved with respect to the rotational movement of the chain wheel, the number of meshing teeth between the chain and chain wheel is small, and the chain is pushed down when meshing starts and releases, resulting in poor meshing accuracy. It has various drawbacks, such as increased meshing noise and disengagement, making it inoperable.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a drive mechanism for a curved door with almost no opening/closing noise and stable opening/closing operation by reliably transmitting the driving force. The feature is that the middle part of the traction member, which is curved along the curved surface of the curved door by fixing both ends to the guide plate at the top of the curved door, is connected to the driving vehicle and driven vehicle provided in the tangential direction of the curved door. By winding, the traction member is towed as the drive wheel rotates, and the curved door is driven in the opening/closing direction.

An embodiment of the present invention will be described below based on the description of the drawings. In Figures 1 and 2,
The drive mechanism for a curved door according to the present invention includes an interior panel 3 provided at the top of a curved door 1, a traction member 2 guided in a curved manner by this guide plate 3, and having both ends fixed to the guide plate 3; A guide plate 3 for winding and towing the towing member 2 in the middle of the member 2
The main configuration is a drive device 9 having a drive wheel 4 and a driven wheel 5 provided on a tangent to the outer peripheral surface of the drive wheel.

Rollers 8, 8 are rotatably fixed to door hangers 6, 6, which are fixed to both ends of the upper part of the curved door 1, respectively. The curved door 1 can be opened and closed freely guided by a circular arc rail 7 fixed to the curved door 1, and the guide plate 3, which is concentric with the curved door 1, is provided between these two door hangers 6, 6. Both ends of the traction member 2 are respectively fixed to both ends of the guide plate 3 with an interval equal to at least the opening/closing stroke length of the curved door 1. The intermediate portion of the traction member 2 has a driving wheel 4 and a driven wheel 5 provided on the tangential direction of the outer peripheral surface of the guide plate 3.
is wrapped around. That is, the traction member 2 has one end fixed to the left end in the figure of the guide plate 3, is guided along the guide plate 3 to the driving wheel 4, and is wound around the driving wheel 4 and the driven wheel 5, and then the traction member 2 is attached to the guide plate 3. The other end is fixed to the right end in the figure. The drive wheel 4 is fixed to an output shaft 10 of a drive device 9 fixed to a building, while the driven wheel 5 is rotatably fixed to the drive device 9. Then, the upper part 11 of the traction member between the driving wheel 4 and one end of the guide plate 3 and the lower part 12 of the traction member between the driven car 5 and the other end of the guide plate 3 are placed on the guide plate 3 at the same height position. The upper part 11 of the traction member and the lower part 12 of the traction member are vertically offset so that they do not touch each other, and in the embodiment, the diameter of the driving wheel 4 is smaller than the diameter of the driven wheel 5. Therefore, the upper part 11 of the traction member
The straight line portion of the upper part 11 of the traction member 11 from the contact point 13 where it starts to come into contact with or come into contact with the guide plate 3, and the straight part of the traction member between the contact point 14 where the lower part 12 of the traction member starts to come into contact with or leave the guide plate 3 to the driven car 5. The straight portion of the upper portion 11 and the straight portion of the traction member 2 connecting the driving wheel 4 and the driven wheel 5 are each provided with a guide plate 3.
are located parallel to each other on the same plane that includes the two contact points 13 and 14 on the outer circumferential surface of the traction member 2, so that the traction member 2 can be wound securely around the outer circumference of the drive wheel 4 and the driven wheel 5 by an angle of 180 degrees without distortion. It is becoming more and more common.

To explain the operation of the device of the present invention having such a configuration, first, when moving the curved door 1 from the closed position shown in FIG. 3 to the open position shown in FIG. When a person is detected by an object detector such as the above, the drive vehicle 4 is rotated in the direction of arrow A as shown in FIG. 3 based on the detection signal. Then, since the upper part 11 of the traction member is towed by the drive wheel 4, the curved door 1 moves in the opening direction of arrow B. At this time, the upper part 11 of the traction member gradually moves away from the outer peripheral surface of the guide plate 3 in the tangential direction of the outer peripheral surface of the guide plate 3, and the drive wheel 4
Then, it is sent into the lower part 12 of the traction member by rotating the driven wheel 5. However, since the end of the lower part 12 of the traction member is fixed to the end of the curved door 1 in the opening direction, it is pulled and gradually comes into contact with the outer circumferential surface of the guide plate 3, so that the amount fed back is returned. I'm going to go. In this way, when the drive device 9 is stopped when the curved door 1 has moved to the open position, the curved door 1 is also stopped and the entrance/exit is kept open.

Conversely, after a certain period of time when a person passes through the entrance,
To move the curved door 1 from the open position shown in FIG. 4 to the closed position shown in FIG. 3, it is only necessary to rotate the drive wheel 4 in the opposite direction. That is, since the lower part 12 of the traction member is towed by the drive wheel 4 via the driven wheel 5, the curved door 1 moves in the closing direction. Then, contrary to the above, the lower part 12 of the traction member gradually separates from the outer peripheral surface of the guide plate 3, and the upper part 11 of the traction member of a length corresponding to the distance is newly attached to the outer peripheral surface of the guide plate 3. I will come into contact with you.
In this way, when the curved door 1 moves to the closed position, the drive device 9 is stopped to maintain the closed state of the entrance/exit.

The curved door 1 is opened and closed by repeating the above operations.

When a chain is used for the traction member 2, the rotation of the drive wheel 4 is reliably transmitted without slipping, so it is particularly effective for large and heavy curved doors, but it is effective for small curved doors. for,
Wires, V-belts, etc. may also be used. or,
In the illustrated embodiment, the case where the diameter of the driving wheel 4 is smaller than the diameter of the driven wheel 5 has been described.
Of course, the reverse case is also possible, but even if the diameters of the driving wheel 4 and the driven wheel 5 are the same, by shifting the center axes of the respective wheels 4 and 5 in the vertical direction, the upper part 11 of the traction member and the lower part of the traction member can be changed. 12 so that they do not come into contact with each other.

As is clear from the above description, according to the device of the present invention, the traction member 2 includes the driving vehicle 4 and the driven vehicle 5.
Since it is wound on the same plane as the drive wheel 4, the rotational force is transmitted to the traction member 2 reliably, and furthermore, it is wound in contact with each wheel 4, 5 at an angle of approximately 180°. Therefore, unlike conventional devices of this type, it is impossible for the traction member 2 to come off the drive vehicle 4 and the driven vehicle 5 and cause the curved door 1 to become inoperable, and it operates stably and generates no mechanical noise. It is extremely quiet. Also, traction member 2
Since the guide plate 3 only comes into contact with or separates from the guide plate 3 at the contact points 13 and 14 and there is no sliding movement, no noise is generated at this part, and therefore there is almost no opening/closing sound. Furthermore, the durability of the drive vehicle 4 and the traction member 2 is improved.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention, and FIG. 1 is a perspective view of the main parts, FIG. 2 is an overall plan view, and FIGS. 3 and 4.
The figures each show a developed front view for explaining the opening/closing operation. 1... Curved door, 2... Traction member, 3... Guide plate,
4...driving vehicle, 5...driven vehicle.

Claims (1)

[Scope of Claims] 1. A guide plate concentric with the curved door is provided on the upper part of the curved door, both ends of a traction member guided by the guide plate are fixed to the guide plate, and the outer peripheral surface of the guide plate is fixed to the guide plate. A driving vehicle and a driven vehicle are provided in the tangential direction of
The traction member is wound around the driving wheel and the driven wheel at an intermediate portion thereof, and as the driving wheel rotates, the traction member pulls the curved door in a tangential direction of the outer peripheral surface of the guide plate to drive the curved door in the opening/closing direction. drive mechanism. 2. The drive mechanism for a curved door according to claim 1, wherein the traction member is a chain.