DE454739C - Automatic door locking device for business owners in the event of malfunctions in the electrical light line - Google Patents

Description

There are automatic door locking devices are known that when an interruption Circuit come into effect and close the door. ' It is always about special circuits intended for this purpose, their closure or interruption Requires interventions to be carried out by hand in particular. In contrast, indicates the device according to the invention in that the door locking device is switched into the circuit of the light line is in such a way that when there is no current of the same a lock the doors causing the second circuit is closed.

The device according to the invention is particularly suitable for installation in business premises, Banks and the like are suitable in that they provide effective protection against theft, to which the darkness caused by the disturbance offers a favorable opportunity, if the thief has the opportunity to leave the house in the dark.

The drawing shows an embodiment of the invention in scheme and device shown.

Fig. Ι shows the scheme.

Fig. 2 and 3 show the door lock in the open and closed state.
Figure 4 is a view of the key used to open the lock.

Fig. 5 shows a section through the key according to Fig. 4.

A solenoid (or magnet) is connected to the light guide I ¹ (Fig. 1), the core k of which carries a lever h which oscillates around the point ρ. Normally, ie as long as current flows through the line I ¹ , the core k (or the armature of a magnet) is attracted. If the line becomes de-energized as a result of some disturbance, the core becomes powerless and falls down, whereby the lever h comes into the position indicated by dotted lines and closes the current of a second line I ² fed by a battery B. In this stream is the lock V, which is triggered by the current in the locking sense.

In the embodiment of the door lock v shown in Fig. 2 and 3, as it can be used in so the invention, the bolt / 'normally has the position indicated in Fig. 2, ie it is by engaging in a groove, here as Pin formed locking extension s ¹ prevents the pressure of the spring Z ¹ to follow. The pin s ¹ is attached to the armature a, which is designed as an angle lever and oscillates around the point b , of an electromagnet nt connected to the line I ² and is secured in this position by the tension spring / ^{2 engaging the armature.} If the circuit of the battery B (Fig. 1) is closed when the light line is disturbed, the armature α is attracted by the magnet m- against the tension of the spring / ² , whereby the pin s ¹ securing the bolt r is pulled downwards (Fig. 3), so that the bolt is pushed into the closed position indicated in Fig. 3 ^{under the pressure of the spring / 1.} To open the lock, a key c as shown in Fig. 4 can be used, which, inserted into the hole I , brings the rod d and thus the bolt f back into the normal position (Fig. 2) by turning it slightly.

Claims (1)

Claim: Automatic door locking device for commercial buildings in the event of malfunctions in the electrical light line, characterized in that when the light line (I ¹ ) is de-energized, a second circuit (J. ² ) which locks the doors is closed. For this purpose ι sheet of drawings.