DE19833834A1 - Door lock with PVC tubes to carry cylinder mounting screws together with a fuse cable which triggers a relay alarm if the door is attacked - Google Patents

Abstract

The front door lock has a mounting screw to hold the lock cylinder, passed through a polyvinyl chloride (PVC) tube in the screw drilling. The screw drilling also carries a fuse cable with a current passing through. If the fuse cable is broken, an alarm is tripped through a relay to show that the lock has been attacked by a jemmy or other tool.

Description

Apartment door lock with alarm triggering electromechanics and Transmission electronics for computer and radio controlled Alarm center (DE 297 21 594.9) to protect against entry and / or opening of, premises to be protected, as well as direct notification of security forces such as e.g. B. Police or similar

Various alarm locks are known in practice. In US 32 63 040 a door lock with a lock bolt described, in which the lock bolt as an electrical switch is trained. When force is applied to the lock bolt becomes the electrical switch and thus an electrical one Circuit closed, which triggers an alarm. This alarm lock can easily be accidentally pressed a false alarm is triggered. Furthermore, the clasp cylinder not against attacks using Ziehfix or other burglar-proof tool secured. The execution of this Castle is complicated.

EP 0 006 147 A1 shows a door lock in which the lock with a pressure sensitive, piezoelectronic element is provided, which triggers a pressure impulse to the alarm system. For piezoelectronic elements it is possible that this does not occur when the pressure rises slowly Deliver momentum. To rule out this possibility, according to EP 0 006 147 41, the piezoelectronic element with a electronic unit connected via a Threshold value the linearly increasing pressure in nonlinear Converts pressure surges. This solution is extremely complicated and therefore prone to errors, and there is also no backup here provided for the lock cylinder.

From DE 91 11 001 U1 different versions of Alarm locks known. Be in an execution group alarm-triggering wires or springs are featured in the lock bolt tense. This poses a risk of fatigue. In another Design variants are the alarm-triggering elements in one special profile shape. The production of these profiles requires special tools. In a third variant the conductor is a liquid. Sealing this Systems against leaks is complex. Furthermore, with a accidental damage to the lock bolt the door leaf and possibly the floor covering due to escaping liquid get dirty or destroyed.  

DE 43 11 210 C2 describes an alarm lock where electrical are conductive agents in a hole in the locking bolt. At Breaking the locking bolt switch the electrically conductive means a circuit whereby an alarm is reported. Here too we missed a fuse for the lock cylinder.

The object of the invention is a back and / or opening Prevent apartment door and if it does by force protective door opened will trigger an alarm effectively.

This object is achieved by the in the patent claims listed features solved.

The following is one shown in the drawing Exemplary embodiment of the invention explained; show it:

Fig. 1 an apartment door lock on average in the direction II in

Fig. 2 shows an apartment door lock in front view of the faceplate.

In Fig. 3 the circuit diagram and in Fig. 4 PVC tube with break cable and in Fig. 5 the locking mechanism with the electronic contacts.

Reference list

1

Lock case

2nd

Fastening metal strips - for use in door leaf

3rd

Cases

4th

Locking bolt

5

Bore f. Mounting screw d. Cylinders

6

Break cable

7

PVC tubes

8th

Bore f. Fixing screw in the door leaf

9

electronic contact on the locking bolt

10th

Monitoring circuit

11

Transceiver unit

12th

Relay f. Break cable in the PVC tube

13

Computer and radio controlled alarm center

14

Locking cylinder

15

Movable part that moves the locking bolt in the lock case

16

electronic contact on

15

Claims (4)

1. Apartment door lock with alarm trigger electromechanics and the transmission electronics to the computer and radio-controlled alarm center (DE 297 21 594.9) to protect against break-ins and / or the opening of premises to be protected, as well as for direct notification of any security forces such. B. Police or the like, characterized in that the fastening screw, which holds the lock cylinder firmly, runs through a PVC tube, in the tube a current-carrying break cable is incorporated, so that if the cable breaks, an alarm is triggered if by means of Ziehfix or other burglar-proof tool force is exerted on the locking cylinder. 2. Apartment door lock with alarm triggering electromechanics and Transmission electronics according to claim 1, characterized, that to the locking mechanism of the lock cylinder is electronic contact, which with the opening and Locking mechanism of the locking bolt in the lock case is in electronic contact, d. H. when the closing process an active circuit is closed, so that at Interruption an alarm is triggered, this will itself when the door is opened by an authorized person the alarm process triggered, this can this through suitable measures To block. 3. Apartment door lock with alarm triggering electromechanics and Transmission electronics according to claim 1 and 2, characterized, that in the lock case there is a receiving and transmitting unit, which with the computer and radio-controlled alarm center (DE 297 21 594 .9) communicates. 4. Apartment door lock with alarm triggering electromechanics and Transmission electronics according to claims 1 to 3, characterized, that the power supply from the inside of the door means normal household electricity as well as the emergency battery.