JPH03253460A - Fixing device for door of train - Google Patents

Abstract

PURPOSE:To obtain a door fixing device suitable for doors opened and closed by a linear motor by providing a permanent magnet to one of the doors and an electromagnet to the other, and causing the permanent magnet and the electromagnet to attract each other so as to keep the doors closed. CONSTITUTION:As doors 1A, 1B are being closed, a permanent magnet 4 and an electromagnet 5 come close to each other, and when the doors are completely closed the magnets 4 and 5 are made to abut on each other and an iron core 51 is attracted to the permanent magnet 4 because of the attractive force of the permanent magnet 4 without transmitting electricity to a solenoid. When the doors 1A, 1B are opened electricity is transmitted to the solenoid and thereby a repulsive force overcoming the attractive force and acting in the direction in which the permanent magnet 4 is apart from the electromagnet 5 is generated in the electromagnet 5. Next a linear motor 2 is operated and can smoothly open the doors 1A, 1B without receiving any resistance.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a door fixing device for holding a pair of left and right doors in a closed state, which is installed at a train entrance and is driven to open and close by a linear motor. .

[Conventional technology]

2. Description of the Related Art Conventionally, electric trains use link mechanisms and compressed air to open and close doors provided at boarding and exit entrances. Therefore, many of the door fixing devices described above are mechanical types that utilize the link mechanism and compressed air.

[Problem to be solved by the invention]

By the way, conventional door fixing devices have complicated structures, and it is difficult to adapt to the opening/closing drive system due to the difference in the power system, especially as devices using linear motors have been developed to drive the opening/closing of the door.

The object of the present invention is to provide a door fixing device that has a simple tank bottom and is suitable for a door that is opened and closed by a linear motor.

[Means to solve the problem]

In order to achieve the above object, according to the present invention, a permanent magnet is provided on one side of a pair of left and right doors and an electromagnet is provided on the other, or a permanent magnet is provided on the door and an electromagnet on the vehicle body side, and the iron core of the electromagnet and the permanent magnet are provided. The door is held closed by attracting the door.

[Effect]

The door is kept closed by the attractive force of the permanent magnet, and the bottom of the tank is extremely simple, just by attaching the permanent magnet and electromagnet. When opening the door, the electromagnet is energized to generate a repulsive force, making it easy to open. Moreover, since it uses the same electric power as a linear motor, it is extremely easy to adapt to the door opening/closing method.

〔Example〕

A first embodiment of this invention will be described based on FIGS. 1 and 2. In the figure, IA and IB are a pair of left and right doors provided at the entrance and exit of the train. 2 is a pair of JalA, I
A stator 21 fixedly installed on the vehicle body side member by a linear motor that simultaneously runs the vehicle in opposite directions and opens and closes the entrance/exit.
It is composed of movable elements 22A and 22B installed on each door, and when energized, the movable elements 22A and 22B
The doors IA and IB are opened and closed by running on the stator 21 in opposite directions. 3 is a door fixing device that includes a permanent magnet 4 and an electromagnet 5, and the permanent magnet 4 is attached to a holder 4.
It is fixedly installed on one door IA via a. On the other hand, the electromagnet 5 consists of an iron core 51 and an electromagnetic coil 52, and the holder 5a
It is fixedly installed on the other door IB via.

In the tank bottom mentioned above, the permanent magnet 4 and the electromagnet 5 are connected to the door IA.
, IB approaches each other as the doors are closed, and when the door is closed, they come into contact with each other, and even if the electromagnetic coil 52 is not energized, the iron core 51 is attracted to the permanent magnet 4 by the attraction force of the permanent magnet 4. Thus, doors IA and IB are kept closed. On the other hand, when the doors IA and IB are opened, the electromagnetic coil 52 is first energized. This generates a repulsive force acting on the electromagnet 5 in a direction that overcomes the attraction force and moves the permanent magnet 4 away. Next, by operating the linear motor 2, the linear motor 2 smoothly opens 1tlA and IB without receiving any resistance.

As mentioned above, the door fixing device 3 is an extremely simple tank bottom that only includes a permanent magnet 4 and an IT electromagnet, and the power system uses the same electromagnetic force as a linear motor, so it is extremely convenient in terms of construction.

3 and 4 show a second embodiment of the present invention, which differs from the previous embodiment in that a pair of doors LA and IB are each provided with a permanent magnet 4A or 4B, and
The point is that electromagnets 5A and 5B corresponding to the permanent magnets 4A and 4B are provided on the vehicle body side member 6. When the doors IA and IB are closed, the iron core 51 of the electromagnet 5A is attracted to the permanent magnet 4A, and the iron core 51 of the electromagnet 5B is attracted to the permanent magnet 4B.
.

The IB is kept closed. Therefore, the same effect as in the first embodiment can be obtained by the same operation.

Further, FIG. 5 and FIG. 6 show a third embodiment of the present invention. This embodiment differs from the second embodiment in that one electromagnet 5 is provided on the vehicle body side member 6. When I11A and IB are closed, the permanent magnets 4A and 4B and the iron core 51 of the electromagnet 5 are attracted to each other, so that the doors IA and 1B are held in the closed state. Therefore, the same effect as in the first embodiment can be obtained by the same operation.

〔Effect of the invention〕

According to this invention, a permanent magnet is provided on one side of a pair of left and right doors and an electromagnet is provided on the other, or a permanent magnet is provided on the door and an electromagnet on the vehicle body side, and the permanent magnet and the iron core of the electromagnet are attracted to close the door. Since the door is held in the closed state, it is possible to provide a door fixing device that has an extremely simple structure and in which the door is held in the closed state by electromagnetic force, which is suitable power for an opening/closing drive method using a linear motor. .

A plan view of the fixing device, FIG. 2 is a front view of the door area of a train similarly equipped with the door fixing device, FIG. 3 is a plan view of the door fixing device showing the second embodiment, and FIG. 4 is the second embodiment. A front view of the door area of a train equipped with the door fixing device of the example, FIG. 5 is a plan view of the door fixing device showing the third embodiment, and FIG. 6 is a front view of a train equipped with the door fixing device of the third embodiment It is a front view of the door area.

IA, IB...Door, 3...Door fixing device, 4.4A.

4B...Permanent magnet, 5.5A, 5B...Electromagnet, 6
・・・Figure Figure 5 Electric stone 6↓6

Claims (1)

[Scope of Claims] 1) In a door fixing device for holding a pair of left and right doors in a closed state provided at an entrance of a train and driven to open and close by a linear motor, a permanent magnet is attached to one of the doors and the other door is opened and closed by a linear motor. A door fixing device for a train, characterized in that an electromagnet is installed on each door of the train, and the iron core of the electromagnet is attracted to the permanent magnet to hold the door in a closed state. 2) In a door fixing device for holding a pair of left and right doors in a closed state installed at a train entrance and driven to open and close by a linear motor, a permanent magnet is installed on each of the left and right doors, and a permanent magnet is installed on the vehicle body side. 2 corresponding to each of the above permanent magnets
A door fixing device for a train, characterized in that a number of electromagnets are disposed, and each permanent magnet is attracted to an iron core of the electromagnet corresponding to each permanent magnet to hold the door in a closed state. 3) In a door fixing device for holding a pair of left and right doors in a closed state installed at a train entrance and driven to open and close by a linear motor, a permanent magnet is installed on each of the left and right doors, and a permanent magnet is installed on the vehicle body side. A door fixing device for a train, characterized in that one electromagnet is installed, and the iron core of the electromagnet and each of the permanent magnets are attracted to each other to hold the door in a closed state.