RU1776592C - Automotive vehicle theft-proof device - Google Patents

Abstract

Use: in the field of automobile electrical equipment, as a security device to prevent unauthorized use of a vehicle. SUMMARY OF THE INVENTION: the device comprises a vibration sensor having a flat spring 1, one end of which is fixed at one end to the housing 4, and the other is horizontal and has a load 2 at its free end. The sensor contacts are included in the power circuit of the detector. The device also contains a locking device having a solenoid 9 with a spring-loaded core 8 and a spring-loaded shock plate 6. The device allows an alarm to be generated when opening doors, a hood, a trunk, and also when a vehicle is lost when trying to remove the wheels, 1 il.

Description

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The invention relates to the electrical equipment of automobiles and can be used as a security device to prevent theft, opening the trunk, hood, and also removing wheels and other parts.

An anti-theft device is known comprising a vibration sensor consisting of a flat spring with a contact and a counter-contact screw used to adjust the sensitivity of the vibration sensor. The disadvantage of this device is that it: there is no possibility of introducing signals from the limit switches of doors, hood, etc., i.e. the device cannot respond to opening doors, etc .; the duration of a series of intermittent alarms depends on the strength of the vehicle's shock (swing), which reduces the reliability of its protection.

The closest in technical essence to the achieved result is an anti-theft device containing a vibration sensor consisting of a flat spring with a contact and a counter contact. A cam and a contact status indication element are used to adjust the sensitivity of the vibration sensor. In addition, this device contains an electronic alarm generating unit, to the input of which the contacts of the vibration sensor are connected and, for example, door limit switches can be connected. Such an anti-theft device has the following disadvantages: the complexity of the design, which consists in the presence of an electronic alarm generating unit; low performance due to the constant consumption of electricity in standby mode and the absence of an automatic shutdown of the alarm signal, which leads to a complete discharge of the power system (battery): reduced security due to a delay (by 7-15 seconds) in the supply alarm signal; During this time, it is possible to carry out unauthorized opening of the passenger compartment and the hood of the vehicle, and disconnecting the alarm from the power source.

The purpose of the invention is to increase the reliability of protection by instantly responding with an alarm to a car push or unauthorized opening of doors, hood, trunk lid.

For this, a device containing a vibration sensor having contacts located in the housing, one of which is made in the form of a horizontally flat spring fixed to one side on the side wall of the housing with a load of

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the free end, which is connected to the signaling device, and the other in the form of an adjustable screw, placed above the flat spring with the possibility of interaction with it and connected to the power source, is equipped with a locking device having a solenoid with a spring-loaded core mounted above the flat spring, a longitudinal axis which is parallel to 10 of the longitudinal axis of the flat spring, and a spring-loaded shock plate fixed at one end to the housing above the flat spring and resting at the other end on the core of the solenoid with the possibility of new

15 interacting with a flat spring, the solenoid being connected between the power source and the screw. The proposed device allows to increase reliability, simplify the design, reduce the complexity

20 manufacture and improve performance.

The drawing shows a General view of the device.

The device contains a flat spring

25 1 with a load 2 and a contact 3, cantilevered in the housing 4. In the housing 4 is also mounted a mechanism consisting of a cocking handle 5 with a shock plate 6, spring pressed 7 to the root 8 of the solenoid 9. In

30 to the cortex 8, a return spring 10 is installed. In addition, contacts 11, 12, 13 and an adjustable screw-contact 14, screwed into the plate 15 and preloaded by the spring 16 are installed in the housing 4. Flat spring 1

35 is electrically connected to terminal 13 and through a switch 17c with a power source. One end of the winding of the solenoid 9 is connected to the plate 15 and through the contact 12 with the door end switches 18-20,

40 hood, trunk lid, as well as through switch 17c with an alarm system of 21 cars. The other end of the coil of the solenoid 9 through the spring 10, the core 8, the plate 6, the shorting spring 7 to the contact 11, which is connected via a switch 17 to a power source.

The anti-theft device operates as follows.

When the vehicle on which the device is mounted is jerked, the flat spring 1 will swing from the inertial load of the load 2 and contact 3 will touch the contact screw 14, close the electric circuit of the solenoid winding 9. Solenoid 9 volts no meas. 8, from which plate b comes off, spring preloaded 7. Turning together with the handle 5, the plate 6 will strike a flat spring 1, which will begin to oscillate with full amplitude repeatedly closing contact 3 to contact 14. Through contacts 3 and 14, pulses

current is supplied to the car alarm system 21, which will emit intermittent alarms until the vibrations of the flat spring 1 die out. To re-strike the plate b against the flat spring 1 (if the car is pushed again), turn the handle 5 until the plate engages 6 per measles 8. If the device after hitting plate 6 with handle 5 is not cocked, then the duration of intermittent alarms depends on the force of the push (swing) of the vehicle (the number of spring 1 vibrations caused by the push). When the doors (hood, lid, trunk) are opened, the limit circuit 18 (19, 20) closes the electrical circuit of the alarm system, which emits a continuous alarm; at the same time, the current will flow to the winding of the solenoid 9, which is not 8 and the plate 6 will hit the flat spring 1, and if the door (hood, trunk lid) is closed, the system emits a series of intermittent signals. The device is switched off from standby mode by a switch 17, which is installed, for example, in a place accessible to people who are outside the car, but hidden from prying eyes (behind the front panel grill, on bumpers, under a lockable

a car cover blocking access to the gas tank plug, etc.).

Claims (1)

SUMMARY OF THE INVENTION An anti-theft device for a vehicle, comprising a vibration sensor having contacts located in the housing, one of which is made in the form of a spring fixed at one end on a side wall of the housing and arranged horizontally with a load on the free end, which is connected to the signaling device, and the other in the form of an adjustable screw located above the Ioy spring with the possibility of interaction with it and connected to a power source, characterized in that, in order to increase reliability, it equipped with a locking device having a solenoid mounted over a flat spring with a spring-loaded core, the longitudinal axis of which is parallel to the longitudinal axis of the flat spring, and a spring-loaded shock plate fixed at one end to the housing above the flat spring and supported by the other end on the core of the solenoid to interact with the flat spring wherein a solenoid is connected between the power source and the screw.