JP5640437B2 - Movable home fence - Google Patents

Description

  The present invention belongs to the technical field of a movable platform fence installed on a platform of a railway station, and relates to a lock mechanism for preventing the movable door from being opened.

  The movable platform fence installed at the platform of the railway station prevents passengers from falling onto the track, and has a locking mechanism to prevent passengers from deliberately opening the movable door when the movable door is closed. ing.

  In a conventional movable home fence locking mechanism, the solenoid is moved by energizing the solenoid to move the drive rod. If the energization to the solenoid is in the opposite direction to that in the locked state, the drive rod is also moved in the opposite direction. Therefore, it will be in an unlocked state. Further, it can be manually unlocked during a power failure (see, for example, Patent Document 1).

JP 2001-140522 A (FIGS. 3 and 4)

  The need to manually unlock the locking mechanism during a power failure is, for example, that passengers who get off the train evacuate to the platform by opening the movable door so that they do not remain between the train and the movable platform fence. Because. However, since passengers do not know how to manually unlock, in a conventional movable platform fence locking mechanism, station staff and train crew must manually unlock all doors. Then, there is a problem that it takes time for passengers to evacuate.

  The present invention has been made to solve the above-described problems, and it is not necessary to manually enter the unlocked state at the time of a power failure, and the movable home fence provided with a lock mechanism that automatically enters the unlocked state. I will provide a.

In the movable home fence according to the present invention, the lock mechanism is provided on the upper side of the engagement portion having the latch rotation shaft and rotating about the latch rotation shaft, and switching between energization and non-energization A solenoid having a solenoid shaft for moving the engagement portion and rotating the engagement portion; a drive portion provided on the upper side of the engagement portion and opposite to the solenoid across the latch rotation shaft; and the engagement portion; a engageable engagement portion rotates the engaging portion by the tension force of the driving unit in a non-energized state of the solenoid, is the also to release the engagement between the engaging portion and the engaged portion .

  According to this invention, since the drive mechanism that releases the engagement between the engaging portion and the engaged portion is used in the non-energized state of the solenoid, the lock mechanism needs to be manually unlocked during a power failure. And can be automatically unlocked.

1 is an overall configuration diagram of a movable home fence for explaining Embodiment 1. FIG. FIG. 3 is a partially enlarged view of a movable home fence for explaining the first embodiment. FIG. 3 is a plan view of a lock mechanism for explaining the first embodiment. FIG. 3 is a cross-sectional view of a lock mechanism for explaining the first embodiment. FIG. 3 is a lock state diagram of the lock mechanism for explaining the first embodiment. FIG. 3 is an unlocked state diagram of the lock mechanism for explaining the first embodiment.

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, and FIG. 2 is a partially enlarged view of FIG. The movable platform fence 100 installed in the platform of the railway station includes a movable door 10 that can be opened and closed and a door pocket 20 that houses the movable door 10, and the movable door 10 can be opened and closed in the direction of the arrow shown in FIG. A lock mechanism 30 is attached inside the door pocket 20. The lock mechanism 30 operates when the movable door 10 is closed, and prevents the passenger from intentionally opening the movable door 10.

  FIG. 3 is a plan view of the lock mechanism 30 and shows a locked state and an unlocked state in an overlapping manner. 4 is a cross-sectional view of the lock mechanism 30, FIG. 4A is a cross-sectional view taken along the line AA in FIG. 3, and FIG. 4B is a cross-sectional view taken along the line BB in FIG.

  The configuration of the lock mechanism 30 will be described with reference to FIGS. 3 and 4. First, the lock mechanism 30 includes a latch 31, a bearing 32, a solenoid 33, a spring 34, a stopper 35, a limit switch 36, and a latch 37.

  The latch 31 (engagement portion) attached to the door pocket 20 can be engaged with the latch 37 (engaged portion) attached to the movable door 10 inside the door pocket 20, and the movable door 10 is opened and opened. The lock function is fulfilled. The bearing 32 is a bearing that guides the rotation operation of the latch 31 around the latch rotation shaft 31a. The solenoid 33 is an electromagnetic solenoid, and when energized, the solenoid shaft moves in the upward direction (lock direction) in the figure, and when not energized, the solenoid shaft moves in the downward direction (unlock direction) in the figure by a spring 34 described later. The spring 34 (driving unit) lifts the leading end side of the latch 31 (the right side in the drawing from the latch rotation shaft 31a) upward (unlock direction) by a tensile force when the solenoid 33 is not energized. The stopper 35 is a rubber stopper for stopping the distal end side of the latch 31 lifted by the spring 34. The limit switch 36 is a sensor that detects a locked state by contact with the rear end side of the latch 31.

  Subsequently, the operation of the lock mechanism 30 will be described with reference to FIGS. 5 and 6. FIG. 5 shows a locked state of the lock mechanism 30, and FIG. 6 shows an unlocked state of the lock mechanism 30.

  When the movable door 10 moves from the open state to the closed side and stops in the closed state, the solenoid 33 is energized through an energization switch (not shown). The closed state of the movable door 10 is detected by, for example, an optical sensor. When the solenoid 33 is energized, the solenoid shaft moves upward in the drawing, and the latch 31 rotates clockwise around the latch rotation shaft 31a, whereby the latch 31 and the latch 37 are engaged. The locked state shown in FIG. The locked state is detected by the limit switch 36, and the amount of rotation of the latch 31 depends on the amount of movement of the solenoid 33.

  When the movable door 10 is moved from the closed state to the open side, first, the solenoid 33 is deenergized via an energization switch (not shown). When the solenoid 33 is deenergized, no electromagnetic force acts on the solenoid shaft, and the solenoid shaft moves downward in the figure by its own weight and the tension force of the spring 34. As a result, the latch 31 rotates counterclockwise about the latch rotation shaft 31a, and the engagement between the latch 31 and the latch 37 is released, and the unlocked state shown in FIG. 6 is obtained. The amount of rotation of the latch 31 in the unlocking direction is regulated by the stopper 35, and the limit switch 36 is not in contact with the rear end side of the latch 31, so that the unlocked state is detected. In this unlocked state, the opening operation of the movable door 10 is started.

  Thus, when the solenoid 33 is deenergized, the lock mechanism 30 is automatically unlocked. Here, the operation of the lock mechanism 30 at the time of a power failure, which is a feature of the present invention, will be described. It should be noted that the power failure refers to a state in which power is not supplied to the movable home fence 100, such as when the power supply to the entire railway station is stopped or when the movable home fence 100 is in an emergency stop.

  At the time of a power failure, the energization to the solenoid 33 is stopped. That is, the solenoid 33 is de-energized and no electromagnetic force acts on the solenoid shaft, so that the solenoid shaft moves downward in the figure by its own weight and the tension force of the spring 34. As a result, the latch 31 rotates counterclockwise about the latch rotation shaft 31a, and the engagement between the latch 31 and the latch 37 is released, and the unlocked state shown in FIG. 6 is obtained.

  Thus, by using the solenoid 33 and the spring 34 for the lock mechanism 30, the lock mechanism 30 is automatically unlocked at the time of a power failure, so that the movable door 10 can be manually opened. Therefore, passengers who get off the train can evacuate to the home by opening the movable door 10 so as not to remain between the train and the movable platform fence 100.

  100 movable home fence, 10 movable door, 20 door pocket, 30 lock mechanism, 31 latch, 31a latch rotation shaft, 32 bearing, 33 solenoid, 34 spring, 35 stopper, 36 limit switch, 37 latch.

Claims (2)

A movable door that is installed at a station platform and can be opened and closed, a door pocket that houses the movable door, and a lock mechanism for preventing the movable door from being opened,
The locking mechanism is
An engagement portion having a latch rotation shaft and rotating about the latch rotation shaft;
A solenoid provided on an upper side of the engagement portion, and moved by switching between energization and non-energization and having a solenoid shaft for rotating the engagement portion ;
A drive unit provided on an upper side of the engagement unit and on a side opposite to the solenoid with the latch rotation shaft interposed therebetween;
An engaged portion engageable with the engaging portion ;
The engagement portion rotates the movable platform fence, wherein a release child engagement between the engaged portion and the engagement portion by the tension force of the driving unit in a non-energized state of the solenoid.   2. The movable home fence according to claim 1, wherein the lock mechanism is mounted in the door pocket, and the engaging portion is engageable with the engaged portion inside the door pocket.

Images