FR2586630A1 - Anti-theft device, using dissuasion, for a car radio - Google Patents

Abstract

The invention relates to a device allowing, by dissuasion, the theft of car radios to be made impossible. It comprises a lever 1 welded to a spring 2 integral with a pin 3 fixed to the casing, a projection 4 under the right-hand end, and a stop 6 equipped with a spring 7 on the internal wall of the casing 5. Under the projection, there is a phial 8 of acid or of mercury, in a barrel 9, or an explosive fuse. An orifice 10 allows the rod 11 fixed under the facade-concealing element 12 to be introduced. The car radio is mounted in the cut-out 13, an orifice 14 allows the rod 11 to retract the stop and hold the projection away from the phial while the facade-concealing element is positioned. In order to take the car radio, the thief will have to remove the facade-concealing element, thus freeing the lever whose projection will break the phial or will strike the fuse and will irreparably destroy the circuit. The dissuasion effect of the device according to the invention is obtained by drawing attention to its presence.

Description

 The present invention relates to an anti-theft device for a radio allowing to deter the possible thief from stealing it.

 An impressive number of car radios are stolen each year, without any current device being successful in reducing their importance.

 nes known devices, the audible alarm installed on board a vehicle, has not improved this situation, mainly because of the noise pollution which it usually causes and sometimes even in a compensatory manner due to its lack of reliability, removing any deterrent effect.

 Other devices consist of housing the radio in a removable botter allowing its removal. These devices, to be effective in all circumstances, oblige the user to take charge of the position he wants to protect from theft, each time he leaves his car. This heavy constraint will quickly become unsustainable and he will give it up.

 The device according to the invention makes it possible to avoid these drawbacks an dissuading the thief from taking the unnecessary risk of fraudulently appropriating a car radio put, by him led by dismantling it to take it, definitively out of order, worthless.

 killing this deterrent effect will only be obtained if the voalur is widely warned and informed, by advertising and the distinctive mark engraved on the noste and the windows of the vehicle, of the existence of the device according to the invention.

 Tl indeed includes a very secure lock which replaces, in its functions, the usual left control of the car radio and thus allows, via a transmission axis integral with the inner end of the barrel, to activate , by coupling, the switch-potentiometer which usually ensures the commissioning and the adjustment of the sound volume of the station, when the key inserted in the lock is turned clockwise.

 The lock also allows to lock the bootmaker thanks to a small steel square in the shape of a square, mounted perpendicular to the free part of the axis, above the switch that it overflows, so that it comes into abutment on two small projections fixed, for this purpose, on the left lateral internal wall and the internal face of the shoemaker when the post. is stopped and the key removed.

 The front of the case has an external rim of 3 mm allowing it to fit nieux to the horn itself.

 according to a more elaborate variant, the usual command is still replaced by a keyboard with numbered keys which arms the starting and stopping of the car radio by means of an electronic switch yes, only with the number of nersonnal code dialed on the keyboard .

 The volume is adjusted by two other keys increasing or decreasing the sound by simple pressure.

 Figure 1 shows, in section, the device according to the invention.

 The device represented in FIG. 1 comprises a safety lock (1) which allows, by the intermediary of a transmission axis (2) integral with the inner end of the barrel (3) to actuate, by coupling, the 'switch-potentiometer (4).

 A small steel piece (5) in the form of a square allows the box to be locked by placing itself under two small projections (6) fixed on the left lateral internal wall and the internal face of the shoemaker when the station is stopped and the key (7) withdrawn.

 The device according to the invention is particularly intended to protect car radios from theft by the deterrent effect it creates on thieves widely informed of its existence by advertising.

Claims (4)

 1 / Anti-theft device for radio allowing, by the self-destruction that it generates, to dissuade the possible thief from appropriating it, characterized in that the left control of the radio is replaced, in its functions, by a lock large serge (1) which allows, via a transmission axis (2) integral with the inner end of the barrel (3) to actuate, by coupling, the switch-potentiometer (4) which usually ensures the commissioning and the adjustment of the sound volume of the station, when the key (7) inserted into the lock (1) is turned clockwise.  2 / Device according to claim 1 characterized in that a small piece (5) of steel in the form of a square allows to lock the shoemaker by placing itself under two small projections (6) fixed on the left lateral internal wall and the internal face of the shoemaker when 16 station is stopped and the key (7) removed. your part (5) is fixed on the free part of the axis (2) o  3 / Device according to claim 1 characterized in that the control is still replaced by a keyboard with numbered keys which allows the commissioning and 1'arr8t of the radio with an electronic switch which only reacts to the code number staff dialed on the keyboard  4 / Device according to claim 3 characterized in that two keys on the keyboard increase or decrease the sound with a single press.