JP2012096768A - Movable platform fence - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a movable platform fence that has a function for automatically adjusting a stroke length of a movable fence in a regular open and close operation so as to eliminate a periodical adjustment of the stroke length of the movable fence in a movable platform fence wherein the distance between door cases varies with seasons.SOLUTION: In the movable platform fence 100, one movable fence 10 of a pair of right and left movable fences 10 includes a stopper mechanism for abutting on the door case 20 for storing the one movable fence 10, wherein a pressing torque exerted on the one movable fence 10 is set larger than that on the other movable fence 10.

Description

  The present invention belongs to the technical field of movable platform fences installed at platforms of railway stations, and relates to stroke adjustment of movable doors.

  It is known that a home floor on which a movable home fence is installed expands and contracts due to a temperature change. For example, the length of the home floor may differ by several centimeters in summer and winter. Therefore, measures are taken such that a gap is provided in advance between adjacent home floors, and a covering plate is disposed on the upper part of the gap. Here, assuming the case where the left and right door pockets of the movable platform fence are arranged so as to straddle the gap, the distance between the door pockets also changes as the home floor expands and contracts. For example, in winter, the home floor shrinks, so the gap becomes wider and the distance between door pockets also increases. When the stroke length of the movable door is constant, a gap is generated between the left and right movable doors in winter even though the movable door is fully closed. Therefore, it is essential to adjust the stroke length of the movable door.

  In the adjustment of the stroke length of the movable door in the conventional movable platform fence, the left and right motors from the fully closed position to the left and right movable doors are closed at the same time, and the left and right movable doors are closed simultaneously from the closed origin. The stroke length of the movable door is stored by calculating the amount of rotation (see, for example, Patent Document 1).

JP 2001-220950 A

  Since the optimum value of the stroke length of the movable door varies depending on the temperature, it is necessary to adjust the stroke length periodically according to the season, for example. Therefore, there is a problem that maintenance is troublesome.

  The present invention has been made to solve the above-described problems, and has a function of automatically adjusting the stroke length in a normal opening / closing operation so that the regular stroke length adjustment is not necessary. Provide a home fence.

  The movable home rail in this invention has a stopper mechanism that comes into contact with a door pocket that houses the one movable door, and one of the left and right movable doors has a stopper mechanism, and the pressing torque to the one movable door is: This is larger than the pressing torque to the other movable door.

  According to the present invention, the movement of one movable door can be regulated by the stopper mechanism, and the other movable door can be regulated by the one movable door. Therefore, the movable door having the function of automatically adjusting the stroke length in the normal opening / closing operation. Can provide home railing.

1 is an overall configuration diagram of a movable home fence in Embodiment 1. FIG. It is a front view of a mode that a pair of left and right movable doors face each other when the distance between door pockets is extended in the first embodiment. It is a front view of a mode that a pair of right and left movable doors oppose when the distance between door pockets is shrinking in Embodiment 1.

Embodiment 1 FIG.
FIG. 1 is an overall configuration diagram of a movable home fence for explaining Embodiment 1 to which the present invention is applied. A movable home fence 100 installed on a platform of a railway station has a pair of left and right movable doors that can be opened and closed. A door 10 and a pair of left and right door pockets 20 each storing the movable door 10 are provided. Inside the door pocket 20, a belt 23 is disposed between the motor 21 and the pulley 22, and the rotational power of the motor 21 is transmitted to the belt 23. Since the movable door 10 is connected to the belt 23, the movable door 10 moves in the opening direction or the closing direction depending on the rotation direction of the motor 21. In this Embodiment 1, the opening / closing operation | movement of the left-right paired movable door 10 shall be controlled by the control part 24 arrange | positioned at the door pocket 20 of either right or left. However, you may arrange | position the control part 24 to the door pocket 20 of both right and left, respectively.

  A stopper mechanism is provided on one of the left and right movable doors 10, and the movable door 10 is referred to as a reference movable door, and the stroke length in the opening / closing operation of the reference movable door is referred to as a reference stroke length. The other movable door 10 is referred to as an adjustment movable door, and the stroke length in the opening / closing operation of the adjustment movable door is referred to as an adjustment stroke length. In the first embodiment, the left movable door 10 is a reference movable door. The stopper mechanism here is an example in which a protruding portion provided on the movable door 10 contacts the door pocket 20 inside the door pocket 20 and the movement of the movable door 10 is regulated by the contact.

  Next, the principle of automatic stroke length adjustment will be described. First, when the movable door 10 is closed, the control unit 24 performs speed control for a while from the start of the closing operation, and switches to torque control when the fully closed state approaches. Switching to the torque control is a timing when the distance between the left and right movable doors 10 becomes a predetermined value or less, for example, 10 cm (5 cm for each left and right). In the torque control, the torque of the motor 21 is smaller than that in the speed control. At this time, the torque to the movable door 10 in the torque control is referred to as pressing torque, and the pressing torque to the reference movable door is larger than the pressing torque to the adjustable movable door. Further, when the reference movable door comes into contact with the stopper mechanism, it does not move beyond the reference stroke length even when a pressing torque is applied. When the reference movable door and the adjustable movable door are pressed against each other and cannot move, the control unit 24 determines that it is fully closed.

  The automatic adjustment of the stroke length when the home floor contracts in winter, for example, will be described with reference to FIG. At this time, if the left and right door pockets 20 are arranged so as to straddle the gap between the home floors, the distance between the door pockets 20 is increased as the gap becomes wider. Therefore, it is necessary to adjust so that the adjustment stroke length of the adjustment movable door becomes long.

  FIG. 2 is a front view of a state in which the pair of left and right movable doors 10 face each other in the fully closed state. FIG. 2A shows a state in which the left and right movable doors 10 have moved the same stroke length. Here, the left movable door 10 is already stopped at the contact position with the stopper mechanism as a reference movable door. The right movable door 10 is moved by the same stroke length as the left movable door 10, but the distance between the door pockets 20 is also extended, so that a gap is formed between the left and right movable doors 10. Thereafter, the right movable door 10 further moves as an adjustable movable door. FIG. 2B shows a state in which the right movable door 10 has moved and is in contact with the left movable door 10.

  As described above, the reference movable door in contact with the stopper mechanism does not move beyond the reference stroke length even when a pressing torque is applied, and the pressing torque to the adjustable movable door is smaller than the pressing torque to the reference movable door. When the movable door comes into contact with the reference movable door, it cannot be pushed any further. In addition, the thickness of the illustrated arrow qualitatively indicates the magnitude of the pressing torque. Therefore, the left and right movable doors 10 can be closed without a gap without being affected by the temperature.

  Next, the automatic adjustment of the stroke length when the home floor is extended in the summer, for example, will be described with reference to FIG. At this time, if the left and right door pockets 20 are arranged so as to straddle the gap between the home floors, the distance between the door pockets 20 is also reduced as the gap is reduced. Therefore, it is necessary to adjust so that the adjustment stroke length of the adjustment movable door is shortened.

  FIG. 3 is a front view of a state in which the pair of left and right movable doors 10 face each other in the fully closed state. FIG. 3A shows a state where the left and right movable doors 10 have moved the same stroke length. Here, since the distance between the door pockets 20 is shortened, the left and right movable doors 10 are already in contact. Thereafter, the left movable door 10 moves further by pushing the right movable door 10. FIG. 3B shows a state in which the left movable door 10 moves while pushing the right movable door 10 and stops at the contact position with the stopper mechanism. Here, in order for the left movable door 10 to move smoothly by pushing the right movable door 10, the pressing torque to the left movable door 10 is equal to the pressing torque to the right movable door 10 and the right movable door 10. It is desirable that it is larger than the sum of the sliding resistance. For example, if the pressing torque to the right movable door 10 is 20N and the sliding resistance of the right movable door 10 is 20N, the pressing torque to the left movable door 10 is set to exceed 40N.

  As described above, since the pressing torque to the reference movable door is larger than the pressing torque to the adjustment movable door, the reference movable door can be moved by pushing the adjustment movable door until it stops at the contact position with the stopper mechanism. Therefore, the left and right movable doors 10 can be closed without a gap without being affected by the temperature.

  As described above, the stopper mechanism is provided on one movable door 10 as a reference movable door, the other movable door 10 is used as an adjustment movable door, and the pressing torque to the reference movable door is larger than the pressing torque to the adjustment movable door. The stroke length can be automatically adjusted in a normal opening / closing operation.

  100 movable platform fence, 10 movable door, 20 door pocket, 21 motor, 22 pulley, 23 belt, 24 control unit.

Claims (3)

A movable home provided with a pair of left and right movable doors that can be opened and closed, a pair of left and right door pockets that respectively store the movable doors, and a control unit that controls opening and closing operations of the pair of left and right movable doors. In the fence,
One movable door of the pair of left and right movable doors has a stopper mechanism that comes into contact with a door pocket storing the one movable door,
The movable home fence, wherein the pressing torque to the one movable door is larger than the pressing torque to the other movable door.   2. The movable home fence according to claim 1, wherein a pressing torque to the one movable door is larger than a sum of a pressing torque to the other movable door and a sliding resistance of the other movable door.   The control unit, when closing the pair of left and right movable doors, performs speed control at the start of the closing operation, and switches to torque control when the distance between the pair of left and right movable doors is a predetermined value or less. The movable home fence according to claim 1.

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