DE1116703B - Vehicle doors provided with a step cover, in particular on railway trains - Google Patents

Description

The subject of the main patent is a vehicle door provided with a step cover, in particular for railroad trains, where the kinetic energy of a weight during opening by hand stored and when triggered locally or centrally in the vehicle or in the train the closing process this stored energy is released to close the door.

According to the main patent, the weight of the vehicle door to be lifted when opening is used Step cover to generate energy for closing the door. The storage energy can be reinforced, for example, by a spring arranged on the car body, which is in the open position the door is tensioned by this, with an electromagnet acting on the door holds this in its open position. When the magnetic current is switched off, the The spring tensioned by the door in the open position triggers the discharge of energy.

However, this has the disadvantage that there is a constant current when the vehicle door is kept open must flow through the electromagnet.

For electrically powered vehicles there is a device for automatic locking and unlocking electromagnetic door locks known, in which the door lock magnets in the current-carrying state - this is when the vehicle is at a standstill - unlock the doors of the vehicle for the opening process. This system is very complex, especially since this includes next to the door lock magnet Electromagnet shunted to the motor armature with contact armature for controlling the door lock magnets is required. Another disadvantage of this device can be seen in the fact that the door lock magnets at a standstill and the electromagnet with contact armature while driving Electricity can flow through it. For the duration of the operating time of the vehicle is therefore uninterrupted Current flow required to operate the door locks.

In another embodiment, a common door lock for railway vehicles used, with the one used for the mechanical unlocking of a compartment door, as a circuit breaker trained hand lever of the circuit for jointly locking the doors serving electromagnet to release the doors is interrupted. This arrangement is complicated, prone to failure and also has the disadvantage that the electromagnets from the current during operation are continuously flowed through.

With a step cover

fitted vehicle door,
especially of railway trains

Addendum to patent 1,082,614

Applicant:

Deutsche Bundesbahn, represented by the Federal Railway Central Office Minden,

Minden (Westphalia), Weserglacis 2

Dr.-Ing. Adolf Mielich, Minden (Westphalia),
has been named as the inventor

Another known arrangement features a safety device for sliding doors which is a vertically movable door sill plate - which is operated by the passenger - brings an electromagnet with a lever, pawl and spring to respond and thereby the Interrupts or initiates the closing movement of the door. Next one very time-consuming and complicated Execution here, too, the magnets are continuously powered by electricity with only brief interruptions flowed through.

According to the invention to remedy the above deficiencies - continuous current flow, complicated and elaborate design - an electromagnet with a bolt is arranged on the door frame, the bolt, when the solenoid was activated, fastened the lock for one to the door Stop cancels. An arrangement not shown in the drawing on the bolt allows the Blocking - through the joint-like suspension of the electromagnet with a bolt and through the attachment a return spring on the door frame - can also be lifted by hand pull.

The structural arrangement according to the invention is shown schematically in elevation in FIG. 1 and in FIG. 2 shown schematically in plan.

On the upper outer door frame 6 is an electromagnet 1 with a movable steel core, which acts as a bolt 2

109 738/11

is formed, attached. On the upper edge of the larger door leaf 4 of a folding door, for example or a stop 3 is attached to the pin guide attached to the door leaf. When opening the door the bolt 2 by the opening movement and the stop 3, which like the bolt 2 for example Has inclined surfaces 5, raised and falls when the door is fully open in front of the stop 3. The door is thus secured against unintentional closing.

In order to initiate the closing process of the door, the electromagnet 1 excited and pulls the steel core designed as a bolt 2 upwards. The lock for the stop 3 is thus canceled and the door is caused to close. Through one on the car body arranged spring and the folded up step cover closes automatically. At the In the event of a power failure, the bolt 2 can also be triggered by pulling on the door. Like in the drawing shown, for example, the electromagnet 1 with the bolt 2 in the joint eye 7 can be pivoted stored and held with a return spring 8 so that the pull on the door Holding force of the return spring 8 is overcome.

For claim 1 protection is given exclusively in connection with the features of claim 1 of the main patent is sought after. Furthermore, claim 2 is a real sub-claim, which is only available in Connection with the following claim 1 applies.

Claims (2)

PATENT CLAIMS: 1. Vehicle door provided with a step cover, especially for railroad trains, in which the kinetic energy of a weight is stored during opening by hand and when the closing process is triggered locally or centrally in the vehicle or in the train, this stored energy is released to close the door Patent 1082 614, characterized in that an electromagnet (1) with a bolt (2) is arranged on the door frame (6), the bolt lifting the lock for the stop (3) attached to the door leaf (4) when the electromagnet is activated. 2. Vehicle door according spoke 1, characterized in that the with a return spring (8) provided electromagnet (1) mounted pivotably on the door frame (6) by means of a hinge eye (7) is to be able to release the bolt (2) by hand. Considered publications:
German Patent Nos. 106 442, 140 961, 242;
U.S. Patent No. 1300 318. 1 sheet of drawings © 109 738/11 10,