DE29611064U1 - Security lock with counter - Google Patents

Description

Utility model application Security lock with number counter

The invention relates to a security lock. This can be a known bolt lock of any type, a cylinder lock or a U-lock or tamper-proof lock.

If such locks are broken or damaged, this is obvious to the authorized person, i.e. he knows that unauthorized access to a room,

V a basement compartment or even to a safe. But it is also possible

It is impossible for an unauthorized person to open a lock with another key, with a lock pick or in any other way without damaging the lock. It is therefore almost impossible for an authorized person to determine whether the lock has been opened without being able to look into the locked room, the cellar compartment or the safe.

The present invention is therefore based on the object of creating a security lock with which an unauthorized opening of the lock can be subsequently detected.

This task is solved by a security lock with the features of the claim.

25

If such a lock according to the invention is opened by an unauthorized person, the counter counts up one number. Based on the counter reading, the authorized person can then determine unauthorized access, i.e. opening and re-closing of the lock.

30

The security lock can advantageously be a known bolt lock, whereby the counter can advantageously be operated by a switching lever that can be moved with the bolt.

J i

1V

Advantageously, the bolt of such a deadbolt lock can be held in its closed position by a U-lock or shackle lock.

A U-lock or tamper-proof lock can be equipped with a visually perceptible counter in a corresponding manner.

Advantageous embodiments of the invention emerge from the subclaims.
10

Further features, details and advantages of the invention emerge from the following drawings of preferred embodiments of the invention and their description. They show:

Figure 1 - a bolt lock according to the invention in side view (Fig. la) and top view (Fig. lb),

Figure 2 - a U-lock according to the invention in front view (Fig. 2a) and side view (Fig. 2b),
20

Figure 3 - a cylinder lock according to the invention,

Figure 4 - a lockable window handle with a security lock according to the invention,
25

Figure 5 - a safe with a security lock according to the invention,

Figure 6 - a door with a security lock according to the invention and Figure 7 - a deadbolt lock with a U-lock according to the invention.

· y

Figure 1 shows a deadbolt lock 1 according to the invention, which has a base plate 31 with a bolt guide 32 and a bolt holder 33, in which a bolt 4 can be moved back and forth between a closed position and an open position without being lost. The deadbolt lock 1 comprises a counter 6, which is advanced by one number by means of a switching lever 9 each time the bolt 4 is moved in the opening direction. It is thus recognizable to an authorized person if an unauthorized person has previously opened and closed the deadbolt lock 1 without authorization. The counter 6 has an armored glass cover 15 to protect against unauthorized interventions.

Figure 2 shows a U-lock 8 designed according to the invention with a counter 10. Every time the U-lock 8 is opened with a key or a lock pick or the like, the counter 10 is advanced by one number. 15

Figure 3 shows a cylinder lock 12 with an indicated counter 14. The counter 14 can be seen or read from the front side 16 of the cylinder lock 12.

Figure 4 shows a lockable window handle 18 with a counter 20. 20

Figure 5 shows a safe 22 which has a counter 24 which is advanced by one number when the safe door is opened.

Figure 6 shows a corresponding application for a standard door. 25

Finally, Figure 7 shows the bolt lock 1 from Figure 1, wherein the bolt 4 is held in the locking position with the shackle lock 8 shown in Figure 2.

Claims (9)

Protection claims 1. Security lock, in particular for locking doors, windows, safes, characterized by a number counter (6, 20, 24, 30, 24) which counts up one number each time the lock is opened or closed. 2. Security lock according to claim 1, characterized in that it is a bolt lock (1) with a bolt (4) that can be moved relative to a base plate (31) and that a switching lever (9) is provided on the bolt (4) which adjusts the counter (6) by one number when the bolt (4) is moved in the opening or closing direction. 3. Security lock according to claim 2, characterized in that on the base plate (31) is provided with a wedge-shaped guide body on which the switching lever (9) slides when the bolt (4) is moved in the opening direction. 4. Security lock according to one of claims 2 or 3, characterized in that the bolt (4) can be locked in the closed position with a U-lock (8). 5. Security lock according to claim 1, characterized in that it is a Mader or U-lock (8) and that the counter (10) is advanced by one number when a key is turned in the opening direction. 6. Security lock according to claim 1, characterized in that it is a cylinder lock (12). 7. Security lock according to one of the preceding claims, characterized in that the counter (6, 10, 14, 20, 24) comprises at least nine counter positions. 8. Security lock according to one of the preceding claims, characterized in characterized in that the counter (6, 10, 14, 20, 24) has a cover (15) made of bulletproof glass. 9. Security lock according to one of the preceding claims, characterized in that a counter is provided on both sides of the device to be secured.