FI121584B - Parasitic alarm device - Google Patents

Description

MURTOHÄLYTINJÄRJESTELY

ENGINEERING

The invention relates to a burglar alarm arrangement. In particular, the invention relates to a burglar alarm-5 arrangement which can be placed in a mechanical lock.

BACKGROUND OF THE INVENTION

Cellar and warehouse burglaries are sadly common in apartment blocks, for example. The most common way to enter the premises is through the door breaking the door or the door lock. To prevent burglaries 10, various alarm systems can be installed on basement and storehouse doors, for example, systems using code, electric locks or access control systems or code keys.

However, installing such systems is expensive and cumbersome. The system used must be so simple that all residents learn how to use it, and due to the number of inhabitants in systems based on different codes, there is a great risk that the code that deactivates the alarm will fall into the hands of outsiders. Also, code keys can be lost, which can be a huge expense when having to replace large numbers of keys.

Burglar alarm systems installed in home doors also have similar problems to alarm systems installed in basements and storerooms. Children and the elderly in particular find it difficult to learn how to use properly cumbersome systems and carrying extra code keys is risky.

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U In addition, many burglar alarm systems have the problem that users do not remember to activate them when exiting the space that is being monitored by the alarm system.

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SUMMARY OF THE INVENTION

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It is an object of the present invention to provide a solution in which the above drawbacks are eliminated or alleviated. In particular, the invention seeks to solve how a burglar alarm arrangement can be installed in a mechanical lock without changing the keys, their sequence, or adding code systems. In addition, the invention seeks to resolve how a burglar alarm arrangement can detect an unauthorized opening of a door and deactivate its alarm arrangements for this time.

The objects of the invention are achieved by a burglar alarm system mounted on a mechanical lock, the burglar alarm arrangement comprising at least its alarm systems and first and second means operatively connected to the alarm system. The alarm system is activated to provide an alarm if the door is opened. The first and second means are arranged to perform an indication as a result of the first and second operations.

The burglar alarm system according to the invention is characterized by what is stated in the characterizing part of claim 1.

In one embodiment of the invention, the alarm system comprises a door detector and an alarm provided in operative communication therewith. For example, the door sensor may be a pair of magnetic contacts.

In one embodiment of the invention, the first and second means are microcircuits.

In one embodiment of the invention, the first operation may comprise opening the lock with the right key and the second operation may comprise opening the lock by a turning knob.

In yet another embodiment of the invention, the indication provided by the first and second means provides deactivation of its alarm systems.

Certain preferred embodiments of the invention are also disclosed in the dependent claims.

δ, The invention provides significant advantages. It may be possible to install the present burglar alarm arrangement V in all mechanical locks. In addition, the burglar alarm

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> 25 can also be retrofitted to most lock and door combinations.

| The burglar alarm arrangement can also be installed without the need to change the keys, serialization 0 and / or lock, or to add a lock, for example, to code systems. Thanks to the present invention, the alarm can always be activated at the doors on which the burglar alarm arrangement of the present invention is installed, without the users having to separately remember to turn the alarm on or off.

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The present invention is extensively applicable, for example, to occasionally used doors, such as flats and basement doors of apartment buildings, or to residential doors.

In the context of this application, the term "activation of the alarm system" means the setting up of the alarm system.

5 In this application, the term "deactivating the alarm system" means disabling the alarm system.

As used herein, the term "door closed" refers to the position of a door in which the door is substantially flush with the frame.

In this application, the term "door open" refers to the position of the door where the lines of the 10 doors and the frame differ substantially from one another.

BRIEF DESCRIPTION OF THE FIGURES

Preferred embodiments of the invention will now be described in more detail with reference to the accompanying drawings, in which Fig. 1 shows a conceptual view of a burglar alarm arrangement according to an embodiment of the invention mounted in a door, Fig. 2 shows an exemplary embodiment for mounting the first and second means.

g 20 DETAILED DESCRIPTION OF THE EMBODIMENTS

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The burglar alarm system according to the present invention comprises at least an alarm system and first and second means, the first and second means being operatively connected to the alarm system.

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Figure 1 shows a schematic view of a burglar alarm arrangement according to an embodiment of the invention mounted on a door. First and second means are provided in the lock housing / frame 1, in this embodiment, for microswitches, to detect

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first and / or second actions directed to the lock housing / body 1 and / or the puller 6. The door sensor 4, in this embodiment, a pair of magnetic contacts, is mounted on the door 7 and the lock frame corresponding to the lock 8. In this embodiment, the functional connection 4 of the door sensor 4 to the alarm 9 is implemented by wiring 2. The door further has a door closure 5 securing the door.

According to one embodiment, the burglar alarm arrangement alarm system is preferably configured to be activated in the door open state when activated. As a result of the first and second steps, the first and second means arranged in connection with the lock can perform an indication which may be to deactivate the alarm system.

Figure 2 illustrates an exemplary embodiment for mounting the first and second means in a mechanical lock. In Figure 2, the first means 206 is disposed between the key housing 204 and the lock body 208, which key housing 204 rests beneath the fixture 202. According to this embodiment, the first operation is to turn the correct locked key in the key body 204, as a result of which the first means 206 performs an indication to the alarm system to deactivate the alarm system 15.

In the embodiment of FIG. 2, the second means 212 is disposed below the torsion knob 214 on the coupling plate and spindle 210 and the second operation is to open the door by turning the torsion knob 214, whereupon the second means 212 performs an indication to the alarm system as deactivated.

20 As a result of the first and second operations, the door can be opened with a suitable key or by turning the knob without the alarm being triggered by the alarm system.

According to a preferred embodiment, the first and second means are micro-o switches arranged to change state as a result of an external operation. Opening the door with a key causes the key housing to turn the micro-V switch to another position. Similarly, opening the door by turning the knob will cause the T knob to turn the microswitch to another position.

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When the key is removed from the lock or the wrench returns to its initial position, the microswitch oj returns to its state, which, in one embodiment, causes the activation of the alarm system 30 in the nucleus again. According to another embodiment, the alarm system is preferably arranged to be activated at all times in a door closed state.

The alarm system of the present invention may consist of a door detector and an alarm which are operatively connected to one another. Door detector 5 can be any system configured to detect door closed and door open states. As an alarm, any method and means arranged to indicate, for example, a break in the lock, such as a buzzer, an alarm light, a message to the alarm center or a text message may be used to name a few. Any known means, such as a cable, may be used for the functional connection of the door detector and the alarm. Since the installation of such an alarm system on a door is known, it will not be described further.

According to a preferred embodiment, a magnetic-10 chain pair is used as the door detector. Hereby, the first and second means are preferably coupled to a pair of magnetic contacts such that the pair of magnetic contacts is activated and / or deactivated based on indications from the first and second means. Since the operation and installation of a magnet-to-pin pair with a lock is a prior art, it will not be described further.

The present invention can be mounted on a mechanical lock comprising at least a key housing, a lock body and a torsion knob. The Mur alarm system can also be retrofitted to the doors.

Only some embodiments of the solution according to the invention are shown above. The scope of the invention is defined in the following claims. However, it will be clear to those skilled in the art that the details of the various aspects of the invention may vary within the overall inventive concept.

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Claims (8)

A burglar alarm arrangement for a mechanical lock in a door comprising at least a key housing (204), a lock body (208) and a torsion knob 5 (214), characterized in that the burglar alarm arrangement comprises: - an alarm system which is activated to provide an alarm; in the state, - first means (206) operatively coupled to the alarm system and first means (206) disposed between a key lock housing (204) and a lock body (208), - second means (212). ), which second means (212) is operatively connected to the alarm system, and which second means (212) are disposed beneath the mechanical lock torque knob (214), wherein said first means (206) is arranged to perform an indication 15 as a result of the first operation; the means (212) being arranged in a non-executable manner an indication of the earth as a result of the second operation and wherein said alarm system is arranged to be deactivated as a result of an indication by said first or second means (206 and 212). A burglar alarm system according to claim 1, wherein said alarm system comprises a door detector (4) and an alarm (9) provided in operative communication therewith. o A burglar alarm arrangement according to claim 2, wherein said door sensor (4) is a pair of magnetic contacts. A burglar alarm system according to any one of the preceding claims, wherein said alarm system is arranged to be activated at all times in a door closed state. CL The burglar alarm system according to claims 1-3, wherein said alarm system is arranged to be activated as a result of an indication made by said first and second means (206 and 212). (M The burglar alarm arrangement according to any one of the preceding claims, wherein said first and second means (206 and 212) are microswitches. A burglar alarm arrangement according to any one of the preceding claims, wherein said first operation comprises unlocking with a right key. The burglar alarm arrangement according to any one of the preceding claims, wherein said second operation comprises unlocking a torque knob (214). 5 o δ cv CD X en CL O {M sj- m o δ cv