JP2016048015A - Screen driver - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a screen driver that saves space while assisting raising and lowering of a screen.SOLUTION: A screen driver comprises: two supports that have a length in the vertical direction and are arranged so as to be apart from each other in the horizontal direction orthogonal to the vertical direction; a screen supported by the two supports so as to be capable of being raised and lowered; a motor for raising and lowering the screen; and a spiral spring driver including a drum around which a wire is wound so as to be capable of being drawn out or taken up and a spiral spring energized in the direction of taking up the wire. The wire is attached to the screen so as to add weight in the raising direction, thereby mitigating a load on the motor in raising the screen as compared with the case of the spiral spring receiving no energization.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a shield driving device that drives lifting and lowering of a shield.

  Block the movement of vehicles and pedestrians, such as blocking one side from the other, allowing movement or visibility to the other side, while allowing or securing movement In order to do this, there is known a shielding device capable of releasing the restriction and releasing the shielding state (see, for example, Patent Document 1).

JP 2014-020080 A

  However, it is difficult for the shielding device to manually move the shielding body in the upward direction when the weight of the shielding body is heavy, and large power consumption is required when the shielding body is moved up and down by a motor. End up. For this reason, when a weight is used to assist the motor drive by applying a certain load to the shield, the weight needs to move for the lifting and lowering of the shield, and the weight width and weight move. Therefore, the height and width are required, so that the apparatus is increased in size and requires space. In such a case, since the support body that supports the shield that moves up and down becomes large, the width between the support bodies becomes narrow, and the passage between the support bodies when the shield state of the shield body is released is inconvenient. Therefore, it is difficult to use such a shielding device in a place requiring a wide predetermined width or a place having a large amount of traffic. In addition, when the shield blocks the passage, it may be necessary to check whether or not there is no left behind person such as a passerby through the shield. Is as thin as possible, particularly at a high position for visual confirmation.

  An object of the present invention is to provide a shield driving device that saves space while assisting the raising and lowering of the shield.

  The shield driving device of the present invention has a length in the vertical direction, and is supported by the two supports so as to be movable up and down, and two supports that are spaced apart in the horizontal direction perpendicular to the vertical direction. A shield, a motor for raising and lowering the shield, and a spiral spring driving device in which a wire is wound around a drum so that the wire can be pulled out and wound, and a spiral spring is biased in a direction of winding the wire, The wire is attached to the shield so as to apply a load in the upward direction to the shield, and the load on the motor when raising the shield is reduced compared to the case where the spiral spring is not biased. Adopt the configuration.

  For example, when the shield is lifted and lowered by a motor and a belt, and a weight and a belt are used to assist the lifting and lowering of the shield, the lifting force of the shield is applied by two belts. For this reason, when the two forces are combined, it is necessary to arrange the two belts well so that the two belts are not displaced in the width direction and the two belts do not contact each other. is there. Such an arrangement increases the size of the device. Therefore, in the present invention, first, the lifting / lowering assist of the shield is performed using a wire. Accordingly, it is possible to smoothly assist the raising / lowering of the shield even if the wires are relatively freely arranged in contrast to the configuration in which the motor force is transmitted to the shield. However, when the lifting / lowering assist of the shield is performed using a weight, the weight connected by the wire swings like a single pendulum if there is no guide. For this reason, it is necessary to provide a guide in order to prevent the weight from swinging. However, if the guide is provided, the structure becomes complicated and the weight increases. Therefore, the present invention further includes a spiral spring driving device in which the wire is wound around the drum so that the wire can be pulled out and wound, and the spiral spring is biased in the direction of winding the wire, and a load in the upward direction is applied to the shield. In addition, the wire is attached to the shield so that the load on the motor when the shield is raised is less than when no spiral spring is urged. As a result, the spiral spring drive device assists the raising and lowering of the shield, so that it is not necessary to use a weight, and accordingly, it is not necessary to provide a guide. Therefore, according to the present invention, it is possible to provide a shield driving device that can save space while assisting the raising and lowering of the shield.

The figure which shows the structure of the shielding body drive device which concerns on embodiment of this invention. (A) is a top view of the spiral spring drive device, (b) is a front view of the spiral spring drive device of (a), and (c) is a side view of the spiral spring drive device of (a). Configuration diagram showing a modification of the shield driving device

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

  FIG. 1 is a diagram showing a configuration of a shield driving apparatus 10 according to an embodiment of the present invention. Hereinafter, the configuration of the shield driving device 10 will be described with reference to FIG.

  The supports 11-1 and 11-2 are hollow members having a length in the vertical direction, are spaced apart from each other in the horizontal direction, and the shielding unit 12 is disposed between the supports. Support.

  The shielding unit 12 (corresponding to a shielding body) is supported by the supports 11-1 and 11-2 so as to be movable up and down. Specifically, the shielding unit 12 is provided on the support members 11-1 and 11-2 so as to be movable up and down, and holds the holding members 13-1 and 13-2 that hold the rope 14, and the holding member 13-1. A plurality of ropes 14 stretched between the body 13-2 and the holding bodies 13-1, 13-2, holding wires 15-1, 15-2, and motors 16-1, 16-2. Drive wires 17-1 and 17-2 for transmitting the motive power are attached. The shielding unit 12 prevents entry and movement of a vehicle, a person, or an object, or blocks the view. The number of the ropes 14 can be appropriately determined according to the purpose and application, and one or more ropes 14 may be stretched between the holding bodies 13-1 and 13-2. Although it may be made of metal or resin, the weight can be reduced and the visibility can be improved by the gap between the ropes.

  The motors 16-1 and 16-2 are provided inside the supports 11-1 and 11-2, and rotate up and down to drive up and down of the shielding unit 12. The motors 16-1 and 16-2 and the shielding unit 12 are connected by drive wires 17-1 and 17-2. The connection between the motors 16-1 and 16-2 and the shielding unit 12 is not limited to a wire, and a power transmission member that does not have a width such as a rack and pinion may be used. Further, the motors 16-1 and 16-2 may be driven only when the shielding unit 12 is raised. In this case, the shielding unit 12 is lowered by its own weight or manually.

  The shield driving device 10 can also be rotatable so that the shielding unit 12 can be manually moved up and down when the power supply is cut off, such as during a power failure. For example, a clutch mechanism is interposed between each of the motors 16-1, 16-2 and the shielding unit 12 so that the connection between the motor and the shielding unit is released in an emergency, or a lock mechanism is provided. The locking mechanism that can hold the position in the raised and lowered positions is configured so that the position of the shielding unit can be released in an emergency by connecting the output shaft to a motor that can rotate in a non-energized state. Also good. In general, since a motor that operates with high power is difficult to rotate manually unless power is supplied, the shielding unit 12 can be rotated in the event of an emergency such as a power outage by enabling rotation even when power supply is cut off. Can be raised and lowered manually, which can contribute to ensuring safety.

  As shown in FIGS. 2A to 2C, the spiral spring driving devices 18-1 and 18-2 are provided with a drum 21 adjacent to the spiral spring 20, and the output to which the inner end of the spiral spring 20 is connected. A shaft 22 is fixed to the drum 21 as a central axis of the drum 21. Further, the holding wire 15 is wound around the drum 21 so that it can be pulled out and taken up. In the spiral spring driving devices 18-1 and 18-2, the spiral spring 20 biases the output shaft 22 in the direction in which the holding wire 15 is wound up. To do. The holding wire 15 is attached to the shielding unit 12 so as to apply the upward load (F1) to the shielding unit 12, and the load (F2 (<F1)) of the motor 16 when raising the shielding unit 12 is a spiral spring. This is less than when there is no 20 bias. It is assumed that the load in the upward direction applied to the shielding unit 12 from the spiral spring driving device 18-1 (or 18-2) and half the weight of the shielding unit 12 are substantially balanced. That is, the load in the upward direction applied to the shielding unit 12 from the two spiral spring driving devices 18-1 and 18-2 provided on the supports 11-1 and 11-2 is substantially equal to the weight of the shielding unit 12. Thereby, a motor can be reduced in size and power consumption can be suppressed. The upward load applied to the shielding unit 12 from the spiral spring driving device 18-1 (or 18-2) may be smaller than half the weight of the shielding unit 12.

  The spiral spring driving devices 18-1 and 18-2 are arranged below the supports 11-1 and 11-2, for example, below half the height of the supports 11-1 and 11-2, and below the supports. You can put the center of gravity on. Further, by arranging the spiral spring driving devices 18-1 and 18-2 below the supports 11-1 and 11-2, the spiral spring driving devices 18-1 and 18-2 are provided above the supports. Space is saved because no space is required. In addition, since a pulley (cable guide member), which will be described later, is installed and arranged on the upper part of the support so that the shield can be lifted and biased by the holding wire used for transmitting the biasing force, the spiral spring drive device 18-1 , 18-2 can be installed at any location, and can be installed above the motor to make the supports 11-1 and 11-2 thinner. Further, the spiral spring drive device may be housed inside the support body like the spiral spring drive device 18-1, or may be arranged outside the support body like the spiral spring drive device 18-2. .

  The holding wires 15-1 and 15-2 are stranded metal wires, have high strength and flexibility, and do not expand and contract. The thickness of the wire (cross-sectional diameter) is, for example, about 1 to 10 mm. One ends of the holding wires 15-1 and 15-2 are attached to the holding bodies 13-1 and 13-2 of the shielding unit 12, respectively, and the other ends are attached to the drums 21 of the spiral spring driving devices 18-1 and 18-2. ing.

  The pulleys 19-1 and 19-2 are direction changing members that change the moving direction of the drive wires 17-1 and 17-2, and are arranged at least above the stroke of the drive wire when the shield 12 is moved up and down. The Further, the pulleys 19-3 and 19-4 are provided parallel to the pulleys 19-1 and 19-2 (the front side of the paper) (the back side of the paper), and the holding wires 15-1 and 15-2 are moved. It is a direction change member which changes a direction. By providing these pulleys 19-1 to 19-4, the spiral spring driving device can be disposed below or on the side of the support body, and space can be saved. In FIG. 1, the support 11-2 is also provided with a pulley 19-5, and like the spiral spring driving device 18-2, the holding wire is held by the pulley 19-5 so that the spiral spring driving device can be arranged outside the support. The moving direction of 15-2 can also be changed.

  Next, operation | movement of the shield drive device 10 mentioned above is demonstrated. First, it is assumed that the shielding unit 12 is in a position indicated by a solid line in FIG. When the motors 16-1 and 16-2 are driven to rotate forward, the shielding unit 12 is raised via the drive wires 17-1 and 17-2. At this time, the holding wires 15-1 and 15-2 are wound around the drum 21 by the urging force of the spiral spring 20 as the shielding unit 12 is raised. When the shielding unit 12 is raised to the position indicated by the dotted line in FIG. 1, the motors 16-1 and 16-2 stop driving.

  Subsequently, when the motors 16-1 and 16-2 are driven in reverse rotation, the shielding unit 12 is lowered via the drive wires 17-1 and 17-2. At this time, the holding wires 15-1 and 15-2 are pulled out from the drum 21 as the shielding unit 12 is lowered. When the shielding unit 12 is lowered to the position indicated by the solid line in FIG. 1, the motors 16-1 and 16-2 stop driving.

  Thus, in the shield driving device 10 of the present embodiment, the holding wires 15-1 and 15-2 are wound around the drum 21 so that the holding wires 15-1 and 15-2 can be pulled out and wound, and the spiral spring 20 is wound around the holding wires 15-1 and 15. -2 provided with spiral spring driving devices 18-1 and 18-2 biased in the winding direction, and holding wires 15-1 and 15-2 are shielded so as to apply an upward load to the shielding unit 12. The load on the motors 16-1 and 16-2 when the shield unit 12 is raised is reduced compared to the case where the spiral spring is not energized. As a result, the spiral spring driving device can assist the raising and lowering of the shielding unit, and it is not necessary to provide a weight that requires a space for movement and a guide that prevents the weight from swinging, and space can be saved. In addition, the spiral spring driving devices 18-1 and 18-2 are urged in the direction in which the shielding body rises to assist the driving force that raises the shielding body, thereby driving the raising of the shielding body such as a motor. Even when the device breaks down, the shield can be easily raised manually only by operating the release mechanism that releases the clutch and the like between the drive device and the shield.

<Modification>
FIG. 3 is a configuration diagram illustrating a modified example of the shield driving device. 3 differs from FIG. 1 in that the tips of the holding wires 15-1 and 15-2 are connected to the lower portions of the holding bodies 31-1 and 31-2, and the moving directions of the drive wires 17-1 and 17-2 are changed. By providing pulleys 19-1 and 19-2 to be converted and pulleys 19-3 and 19-4 to change the moving direction of the holding wires 15-1 and 15-2 on the support body, the shielding unit 12 is raised. At this time, the holding bodies 31-1 and 31-2 protrude from the upper part of the support body. Accordingly, since the shielding unit 12 protrudes when the shielding unit 12 is raised, it is not necessary to extend the support body to the upper side of the shielding body driving device, and the width of the upper portion of the shielding body driving device is reduced. The visibility on the other side through the shield can be improved. That is, further space saving can be achieved.

  In the above-described embodiment, it is not specifically defined whether the shielding unit 12 is to be shielded or whether the shielding unit 12 is to be shielded. However, depending on the application status of the present invention, either Should be shielded. Note that the shield driving device of the present invention does not necessarily have a function of hindering visual recognition as long as it can limit the entry and movement of an object such as a person, an object, or a vehicle. It includes a shield driving device for performing.

  INDUSTRIAL APPLICABILITY The present invention is useful as a blocking device that blocks the entry of people, objects, and vehicles at various locations such as entrances and exits of construction sites, pedestrian crossings, station platforms, and fields, and blocks the view.

DESCRIPTION OF SYMBOLS 10 Shield body drive device 11-1, 11-2 Support body 12 Shield unit 13-1, 13-2, 31-1, 31-2 Holding body 14 Rope 15-1, 15-2 Holding wire 16-1, 16 -2 Motor 17-1, 17-2 Drive wire 18-1, 18-2 Spiral spring drive device 19-1 to 19-5 Pulley 20 Spiral spring 21 Drum 22 Output shaft

Claims (4)

Two supports having a length in the vertical direction and spaced apart in a horizontal direction perpendicular to the vertical direction;
A shield supported by the two supports so as to be movable up and down;
A motor for raising and lowering the shield;
A spiral spring drive device in which a wire is wound around a drum so that the wire can be pulled out and wound, and a spiral spring is biased in a winding direction of the wire;
With
The wire is attached to the shield so as to apply a load in the upward direction to the shield, and the load on the motor when raising the shield is reduced compared to the case where the spiral spring is not biased. Yes,
Shield drive device. The wire is attached to the shield via a direction changing member,
The shield driving apparatus according to claim 1. The shield is
Two holding bodies provided on each of the two supports so as to be movable up and down;
A rope stretched between the two holding bodies;
With
The wire is attached to the holder;
The shield driving device according to claim 1 or 2. The upward load applied to the shield from the spiral spring drive device and the weight of the shield are substantially balanced,
The shielding body drive device as described in any one of Claims 1-3.

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