RU103027U1 - MAGNETIC-CONTACT DETECTOR AND SHOCK-SECURITY SYSTEM ON ITS BASIS - Google Patents

Abstract

The present invention relates to locking and security devices and is intended to limit the access of unauthorized persons to guarded objects for various purposes: apartments, cottages, garages, state and municipal institutions, etc. Locking and security system contains a locking device (memory) and a magnetic contact detector. As a memory, locking devices having a crossbar system can be used. The memory is installed on the movable leaf of the door block of the protected object. The magnetic contact detector contains a reed switch and a magnet combined in one housing. A magnetic contact detector is mounted on the fixed frame of the door unit of the guarded object. Arming the object is carried out when the memory is closed, and when an unauthorized attempt is made to open the memory, the magnetic contact detector sends an alarm to the security control panel. 1 s.p. f-ly, 3 ill.

Description

The invention relates to a security alarm technique, namely, devices that respond to a change in the state of a monitored (guarded) object and can be used to monitor the status of a locking device and alert unauthorized persons to secure objects for various purposes: apartments, cottages, garages, technical rooms residential sector, state and municipal institutions, etc.

There are various alarm systems. A known alarm device [1], containing a sealed contact (reed switch) and a magnet. At the same time, the reed switch and magnet are combined in one housing, which is installed on the fixed part of the protected structure. The magnetic field of the specified magnet is closed to the reed switch. The response part of the device is the movable part of the protected structure. This movable part is either itself made of magnetically active material, or has a magnetically active plate fixed to it. When the magnetically active moving part approaches the stationary part, the magnetic field of the magnet closes on it and weakens relative to the reed switch, as a result of which the latter goes into an unswitched state. When the moving part is removed from the sensor, the reverse process occurs and the reed switch goes into a switched state.

A known signaling device for preventing hacking [2] comprises a housing in which a permanent magnet, a spring, a magnetically controlled switch, a pusher and a resistor are placed. A magnetically controlled switch is made on a magnetodiode, one terminal of which is connected to one terminal of the resistor. One end of the pusher is placed in the hole on one side of the housing and is the control input of the device. At the other end of the pusher, a permanent magnet is placed, which is spring-loaded with respect to the opposite side of the housing. The magnetodiode is positioned so that its side faces are perpendicular to the axis of the pusher, and the magnetic lines of force of the permanent magnet coincide with the axis of the pusher. Another terminal of the resistor and another input of the magnetodiode are placed in the holes on the side of the housing and connected to the buses of the power source. The magnetodiode is normally open, that is, the switch is open when the permanent magnet is removed from it, which should correspond to the closed state of the door or window of the blocked opening. In this state, the pusher compresses the spring and removes the permanent magnet from the magnetodiode. In this case, the switch opens and there is no alarm output. When the door or window of the locked opening is opened, the pusher moves a permanent magnet to the magnetodiode under the action of a spring, while the switch closes and an alarm signal appears at the output of the device.

One of the drawbacks of the described known security devices is their later activation, when the doors of the security door, window or other openings are already open and the subject is in the protected area.

The closest in technical essence and the achieved effect to the proposed technical solution is the combined device "SKAT" (KU) [3], designed to limit access by unauthorized persons to the protected objects. KU "SKAT" consists of a locking device (memory) and a magnetic contact detector. The magnetic contact detector consists of a reed switch and a magnet, which are enclosed in different cases. The case with the magnet is placed in the bolt of the locking device. The locking device is mounted on a movable door leaf. A housing with a reed switch is mounted opposite the magnet in the fixed frame of the door block. The conclusions from the reed switch are connected by wires to the input of the object signal device. When the charger is closed, the bolt brings the magnet installed in it as close as possible to the reed switch. In this case, the magnetic field of the magnet is closed to the reed switch, the electric circuit is closed, the object is taken under protection. When you try to open the memory, the bolt moves to the opening side, while the electric circuit opens and an alarm goes to the signal device. The magnetic contact detector transmits an alarm signal even when trying to open the lock, which allows operational services to arrive at the guarded object before the memory is opened. Reed switch is triggered after the first half-turn of the key when opening the SCAT SC from the "closed" position.

However, the SKAT combined device presented as a prototype has some disadvantages.

Firstly, since the reed switch and the magnet are placed in different cases and the case with the reed switch is mounted on one, and the case with the magnet on the other parts of the door block, this leads to an increase in time and labor costs for installation work when installing a magnetic contact detector.

Secondly, when installing the magnetic contact detector, it is necessary to observe alignment, that is, the reed switch relative to the magnet should not be shifted more than the distance recorded in the technical specifications on the detector.

Thirdly, during the operation of SKU KU, the contact surface of the reed switch housing with the magnet housing may become dirty, oily or damaged, which leads to a decrease in the sensitivity of the magnetic contact detector.

The technical task of the proposed technical solution is to eliminate the above disadvantages of the prototype, while maintaining all the positive properties that the prototype possesses.

According to the proposed technical solution, the locking and security system contains a locking device (memory) and a magnetic contact detector. As a memory device, locking devices of any make, model and any manufacturer that have a crossbar system of translational action of both horizontal and vertical directions can be used. The memory is installed on the movable leaf of the door block of the protected object (door, window, safe, etc.). The magnetic contact detector contains a reed switch and a magnet, which are enclosed in one housing. The magnetic contact detector is mounted through the bracket in the fixed frame of the door block of the guarded object in the area of the locking device and is connected via wires to the signaling device that gives an alarm to the security control panel.

The invention is illustrated by drawings.

In Fig.1 - magnetic contact detector.

Figure 2 - locking and security system in the "open" position.

Figure 3 - locking and security system in the "closed" position.

Figure 1 presents the inventive magnetic contact detector. The detector comprises a reed switch 1 placed in the sleeve 2. The sleeve 2 is fixed by a threaded connection to the housing 3. In the housing 3 there is a slider 5 with a permanent magnet 4 installed in it. The magnetic lines of force of the magnet 4 coincide with the axis of the slider 5 and the axis of the reed switch 1 The shape and dimensions of the slider 5 determine its free movement inside the housing 3 between the reed switch 1 and the limiting protrusions of the housing 3. The slider 5 with the magnet 4 is spring-loaded from the reed switch 1 side by a spring 6. The housing 3 is threaded in place nshteyn 7, wherein the parameters of the threaded connections provide the necessary adjustment of the gap between the reed 1 and the slider 5 with magnet 4. The bracket 7 for mounting the magnetic-track detector in the stationary part of the protected object by means of screws. In the absence of force, the spring 6 is released, the slider 5 with magnet 4 is removed from the reed switch 1.

Figure 2 presents the inventive locking and security system installed in the door unit and ready for use. The locking and security system includes a magnetic contact detector and a locking device (memory). The magnetic contact detector is mounted in the fixed frame of the door unit. The locking device in the "open" position is mounted on the movable leaf of the door unit.

Figure 3 presents the inventive locking and security system installed in the door block, in action, with a closed locking device.

The operation of the inventive locking and security system is as follows. In the locked position, the bolt 8 is fully extended from the housing of the memory. Acting on the slider 5, the crossbar 8 as close as possible magnet 4 to the reed switch 1. The spring 6 is compressed. At the same time, the magnetic lines of force of magnet 4 close the reed switch 1. The electric circuit, which includes the reed switch 1 and the signal device, closes, the object is taken under protection. When you try to open the memory bolt 8 begins to move in the direction of opening. At the same time, it moves away from the slider 5, the spring 6 stretches, shifts the slider 5 with the magnet 4 behind the crossbar 8. Moving away, the magnet 4 opens the reed switch 1, the electric circuit opens and an alarm signal is sent to the signal device already at the initial stage of opening the charger. The magnetic contact detector can be equipped with additional control units for burglar or fire alarm systems. The proposed locking and security system allows you to control the closing of the locking device when placing the object under protection and changing the status of the locking device of the protected object by generating and transmitting an alarm signal already at the stage of attempting to open the locking device, and also eliminates the claimed disadvantages of the prototype.

Short notation:

1 sealed contact (reed switch)

2 sleeve

3 building

4 magnet

5 slider

6 spring

7 bracket

8 bolt locking device

Information sources:

1. RF patent №2253901 for the invention of "Alarm Security Device", IPC G08B 13/08, G08B 13/24, published on 10.06.2005.

2. RF patent No. 2101767 for the invention of “Signaling device for preventing hacking”, IPC G08B 13/08, published on 01/10/1998.

3. The standard organization LLC “Class-K”. STO 13169605-01-2008. “Combined device“ SKAT ”. Technical conditions

Claims (2)

1. A security alarm device comprising a reed switch and a magnet, characterized in that the reed switch and magnet are located in the same housing, the magnet being spring-loaded and free-running relative to the reed switch within the housing, and the magnetic lines of force of the magnet coincide with the reed axis and the magnet axis while the design of the device is configured to adjust the gap between the reed switch and the magnet. 2. The security alarm device according to claim 1, characterized in that the clearance between the reed switch and the magnet is controlled by a threaded connection, through which the housing and the bracket are connected.