LT5451B - Safety of lock mechanism - Google Patents

Abstract

The invention relates to safety of lock mechanisms for premises and safes. Safety of lock mechanism comprises signal sensor whereas inside/opposite a lock is fixed mechanical latch or laser or infrared rays means sensitive to motion, which are connected to signal electrical circuit. A mechanical latch comprises a safety plate with magnetic or contact sensor, which are connected to a signal electrical circuit. A laser means sensitive to motion comprises a unit of laser light sensor, which is connected to a signal electrical circuit. Furthermore, means of infrared rays sensitive to motion comprises a sensor of infrared rays, which is connected to a signal electrical circuit.

Description

The invention is directly related to the improvement of security devices (various locks and locks) of residential, commercial, public and other premises and safes, which would minimize the access of unauthorized persons to the premises or safes.

Currently, the world's largest locksmiths are constantly improving the construction of their products, making it harder for criminals to unlock locks, but as their designs improve, the skills of the criminals and their technical means to overcome those locks are improving.

One of the safeguards is to protect the lock mechanism from drilling by installing a hard metal disk in front of the lock core. Such a versatile drill lock protection disc is described in EP1106753.

According to the statistics, depending on the professionalism of the thief, the locks of various complexity are opened within 0.5 - 2 minutes, more complicated constructions - within 2 - 5 minutes. All the locks open, only with different opening times.

If access to the dwelling or other premises is possible only through the entrance door, the extent to which they are protected depends on how difficult it is to enter. If the outside door is armored, if the frame is reinforced, if the locks are protected by hard metal plates or discs as described in EP1106753, and so on, i.e. physically pushing, smashing or otherwise mechanically operating the door to get in or out will be time-consuming and / or a lot of noise, the only way to get inside is to overcome the lock design.

With the development of the locking structures, they can no longer be overcome by drilling, acids and other means of action of the locking mechanism. The only way remains is to unlock the lock with a key, by choosing a key or other criminal means.

It is very good if the premises are equipped with a local alarm system, and even better if the premises security is entrusted to the security service. When the door is opened, the alarm is triggered, the alarm siren is activated after a set time (usually 20 - 30 seconds), and a security service responds in parallel, which arrives at the protected object within 3-5 minutes, depending on the location of the protected object. .

intruders still have some time for "lightning" theft when the door is opened. In the event of intrusion into a random object after the alarm has been triggered, there is usually no risk of going inside, but if the object is intruded on in advance and gathered information about the values of interest, these short periods may be sufficient to commit theft.

The essence of the invention is to deprive the hacker of the ability to break the lock.

If the alarm responded to the burglar's actions just after the burglary began to break, it would lose the time it takes to break the lock. Turning on the alarm would also have a moral impact - trying to break the lock to enter and commit a crime once the security services have responded is very unlikely.

For this purpose, mechanical, laser, infrared, motion-responsive or other "curtains" are mounted either inside or outside the shutter, which react and signal the alarm against any attempt to intrude inside the shutter.

The method of protecting the shutter mechanism thus proposed involves mounting a mechanical shutter or laser or infrared motion responsive means before or inside the shutter and connecting them to the alarm means. The protective device of the proposed locking mechanism consists of a mechanical shutter mounted on the lock or inside the lock, or a laser or infrared motion responding device connected to the electric circuit of the alarm.

The mechanical shutter may consist of a security plate with a magnetic or contact sensor connected to the electrical circuit of the alarm. Alternatively, the laser motion-responsive means may comprise a laser light source and a light sensor assembly connected to an electrical circuit for the alarm. In addition, the infrared motion responsive means may comprise an infrared sensor coupled to an electrical circuit of the alarm.

Brief Description of the Drawings In which:

FIG. 1 is a front elevational view of the door and B in the direction of the arrow;

FIG. 2 is a view according to FIG. 1 Section A-A with laser motion-responsive device mounted;

FIG. 3 is a view according to FIG. 1 Section A-A with mechanical shutter mounted.

The locking mechanism security device shall consist of a mechanical or a motion-responsive means mounted in front of the lock or inside the lock, connected to the electrical circuit of the alarm. FIG. 2 shows an embodiment of a laser motion responsive means comprising a light source 1 and a light sensor 7 mounted behind the outer door body 3, at the outer opening for the key 4 and in front of the locking mechanism 5 with the locking latch 6.

When using an infrared motion sensor, the latter is mounted in place of the light source 1 and the light sensor 7.

FIG. 3 illustrates an embodiment of a mechanical shutter consisting of a plate 8, one end of which is shamrically secured to an outer opening for a key 4 behind the outer door casing 3, and a magnetic contact 9 which is part of the alarm circuit.

When the mechanical shutter is a plate with a contact sensor, instead of the magnetic contact 9, a contact sensor is connected to the electric circuit of the alarm.

The lock security feature works as follows:

A "curtain" 2 (Fig. 2) is formed between the light source 1 and the light sensor 7, which is damaged when inserting the key through the outer opening of the key 4, i.e. the communication circuit between the source 1 and the transducer 7 is terminated, and thus the common alarm circuit as the latter are connected to it. In the case of a mechanical latch, by inserting the key 10, the plate 8 is opened and the magnetic contact 9 is opened, thereby breaking the signaling circuit of which said magnetic contact 9 is a part.

Claims (5)

DEFINITION OF INVENTION 1. A method of protecting a locking mechanism, comprising installing a security means comprising installing a mechanical shutter or a laser or infrared motion-responsive means in conjunction with the alarm means before or within the lock. 2. A security mechanism for a locking mechanism comprising an alarm sensor, characterized in that a mechanical shutter or a laser or infrared motion means mounted on the electrical circuit of the lock is provided either before or inside the lock. 3. The locking mechanism security device according to claim 2, wherein the mechanical locking device comprises a security plate with a magnetic or contact sensor connected to the electric circuit of the alarm. 4. The locking mechanism security device of claim 2 wherein the laser motion responsive means comprises a laser light source and a light sensor assembly coupled to a signaling electrical circuit. 5. The locking mechanism of claim 2, wherein said infrared motion responsive means comprises an infrared sensor coupled to an electrical circuit for signaling.