FR2693417A1

FR2693417A1 - Anti-theft device e.g. for motor vehicle - uses devices acting on vehicle braking or clutch systems

Info

Publication number: FR2693417A1
Application number: FR9208959A
Authority: FR
Inventors: Reau Michele
Original assignee: Individual
Current assignee: Individual
Priority date: 1992-07-13
Filing date: 1992-07-13
Publication date: 1994-01-14
Anticipated expiration: 2012-07-13
Also published as: FR2693417B1

Abstract

The device includes an electromagnet (1) mounted on a mechanism (2) which is controlled by a lock (3). When the electromagnet is inactive, a spring (4) drives a steel rod extending from the (6) into a slot (7), preventing the removal of a key (8) and the actuation of the anti-theft device. Thus the vehicle may be driven normally. When the vehicle is parked and the brake applied, an electrical impulse in the wires (9) withdraws the steel rod and renders the lock operative. The impulse may come from a circuit such as that of the handbrake warning light, so that the electromagnet is not left permanently active. ADVANTAGE - Anti-theft device cannot be accidentally engaged when vehicle is in motion or handbrake is off. Conforms with European legislation.

Description

PERFECTIONNEMENT AUX ANTIVOLS AGISSANT SUR LES
CIRCUITS DE FREINAGE OU D'EMBRAYAGE DES VéHICULES
La présente invention a pour objet un perfectionnement aux antivols agissant sur les circuits de freinage ou d'embrayage des véhicules.IMPROVEMENT IN ANTI-THEFT DEVICES ACTING ON
VEHICLE BRAKING OR CLUTCH CIRCUITS
The present invention relates to an improvement in anti-theft devices acting on the braking or clutch circuits of vehicles.

Il est destiné à être installé sur les antivols mecaniques montés sur le circuit hydraulique oli pneumatique actionnant les freins ou 1'embrayage, et peut convenir a tous les types de vehicules terrestres, tels que voitures, camions, motocyclettes, engins agricoles et de travaux publics, etc. It is intended to be installed on mechanical locks mounted on the hydraulic or pneumatic circuit actuating the brakes or the clutch, and can be suitable for all types of land vehicles, such as cars, trucks, motorcycles, agricultural and public works machinery , etc.

Il existe à ce jour plusieurs systèmes antivol montés sur le circuit de freinage et agencés de manière à immobiliser le véhicule en bloquant les freins dès que l'on actionne ces derniers. Ces systèmes utilisent généralement un clapet anti-retour dont l'action peut être inhibée au moyen d'un dispositif à clé ou similaire, ledit clapet empêchant le retour du fluide de freinage lorsque l'antivol est actif. Le même principe a également été appliqué aux circuit d'embrayage. To date, there are several anti-theft systems mounted on the braking circuit and arranged so as to immobilize the vehicle by blocking the brakes as soon as they are applied. These systems generally use a non-return valve whose action can be inhibited by means of a key device or the like, said valve preventing the return of the brake fluid when the anti-theft device is active. The same principle was also applied to the clutch circuit.

Ces appareils, bien que particulièrement efficaces; présentent toutefois un certain nombre d'inconvénients. En particulier, ils peuvent être activés par inadvertance pendant l'utilisation normale du véhicule, ce qui peut entraîner la perte de contrôle de ce dernier. En outre, il ne sont pas conformes à la legislation européenne actuelle qui préconise que ce type d'antivol ne doit pouvoir être mis en service que si le frein à main a eté actionné. These devices, although particularly effective; however have a number of drawbacks. In particular, they can be activated inadvertently during normal use of the vehicle, which can lead to loss of control of the latter. In addition, they do not comply with current European legislation which recommends that this type of anti-theft device should only be able to be put into service if the handbrake has been applied.

Le dispositif selon la présente invention a pour but de pallier à ces inconvenients. En effet, il permet non seulement d'interdire la mise en position antivol tant que le frein de stationnement n'est pas en fonction, mais également d'empêcher la manoeuvre du système pendant l'utilisation autorisée du véhicule qu'il equipe. The device according to the present invention aims to overcome these drawbacks. Indeed, it allows not only to prohibit the anti-theft position as long as the parking brake is not in operation, but also to prevent the operation of the system during the authorized use of the vehicle it equips.

I1 est constitué par la combinaison d'un moyen électro-magnétique, électronique ou mécanique permettant de bloquer mécaniquement la serrure ou les commandes actionnées par la serrure de l'appareil antivol lorsque celui-ci est en position repos, c'est- -dire lorsque le véhicule peut rouler, interdisant la mise en position antivol tant que le dispositif n'aura pas reçu une impulsion débloquant ladite serrure ou ses commandes, cette impulsion étant obtenue par la mise en fonction du frein de stationnement ou d'une autre commande du véhicule
Sur les dessins annexes, donnes à titre d'exemples non limitatifs de formes de réalisation de l'objet de l'invention:
les figures 1 et 2 représentent en coupe deux appareils antivol equipés de moyen de blocage de la serrure.I1 is constituted by the combination of an electro-magnetic, electronic or mechanical means making it possible to mechanically block the lock or the controls actuated by the lock of the anti-theft device when the latter is in the rest position, that is to say when the vehicle can drive, preventing the anti-theft position until the device has received an impulse unlocking said lock or its controls, this impulse being obtained by setting the parking brake or another command of the vehicle
In the accompanying drawings, given by way of nonlimiting examples of embodiments of the subject of the invention:
Figures 1 and 2 show in section two anti-theft devices equipped with locking means of the lock.

Le dispositif, figures 1 et 2, est constitué d'un electro-aimant 1, monte sur le mecanisme 2 actionné par la serrure 3, et pourvu d'un ressort 4 forçant un axe d'acier 5 solidaire du noyau mobile 6 à pénétrer dans un perçage 7 dudit mécanisme lorsque l'électro-aimant n'est pas sous tension, empêchant le retrait de la clé 8 et la mise en service de l'antivol. The device, Figures 1 and 2, consists of an electromagnet 1, mounted on the mechanism 2 actuated by the lock 3, and provided with a spring 4 forcing a steel axis 5 integral with the movable core 6 to penetrate in a bore 7 of said mechanism when the electromagnet is not energized, preventing the key 8 from being removed and the anti-theft device being put into service.

Quand la commande de l'antivol mécanique est tourne en position route, l'axe d'acier 5 pénètre dans le perçage 7 grâce au ressort de rappel 4 de maniere à ce que la cle 8 qui commande le mécanisme 2 se trouve emprisonnée dans la serrue 3, permettant au véhicule de rouler en toute sécurité sans que l'antivol puisse se déclencher intempestivement. When the mechanical anti-theft control is turned to the road position, the steel axis 5 penetrates into the bore 7 thanks to the return spring 4 so that the key 8 which controls the mechanism 2 is trapped in the lock 3, allowing the vehicle to drive safely without the anti-theft device being able to be triggered inadvertently.

Lorsque l'utilisateur du véhicule arrête celui-ci et desire mettre l'antivol en action, il doit obligatoirement tirer sur le frein de stationnement ou actionner une autre commande interne du vehicule, ce qui aura pour effet d'envoyer une impulsion électrique dans les conducteurs 9 alimentant la bobine 10 de l'électro- aimant 1 provoquant le dégagement de l'axe acier 5 en debloquant ainsi la serrure 3. Le vehicule sera alors sous la protection antivol. When the user of the vehicle stops it and wishes to put the anti-theft device into action, he must necessarily pull the parking brake or actuate another internal control of the vehicle, which will have the effect of sending an electrical impulse to the conductors 9 supplying the coil 10 of the electromagnet 1 causing the release of the steel axis 5 thereby unlocking the lock 3. The vehicle will then be under anti-theft protection.

Le courant nécessaire peut avantageusement être prélevé sur le circuit alimentant l'ampoule du témoin de frein de stationnement, ce qui présente l'avantage de couper automatiquement l'alimentation de la bobine 10 lorsque la cle de contact du véhicule est retirée, évitant ainsi que l'electro-aimant reste sous tension durant une période prolongée, ce qui risquerait de l'endommager. The necessary current can advantageously be taken from the circuit supplying the bulb of the parking brake warning lamp, which has the advantage of automatically cutting the supply of the coil 10 when the ignition key of the vehicle is removed, thus avoiding that the electromagnet remains energized for an extended period of time, which could damage it.

Dans certains cas particuliers, l'électro- aimant 1 peut être remplacé par un dispositif mécanique, voire hydraulique, remplissant les mêmes fonctions. In certain particular cases, the electromagnet 1 can be replaced by a mechanical, even hydraulic, device fulfilling the same functions.

Le positionnement des divers éléments constitutifs donne à l'objet de l'invention un maximum d'effets utiles qui n' avaient pas eté, à ce jour, obtenus par des dispositifs similaires. The positioning of the various constituent elements gives the object of the invention a maximum of useful effects which had not, to date, been obtained by similar devices.

Claims

CLAIMS characterized by the combination of an electromagnetic, electronic, hydraulic or mechanical means (1) making it possible to mechanically block the lock (3) or the controls actuated by the lock of the anti-theft device when the latter is in the rest position , that is to say when the vehicle can roll, preventing the anti-theft position until the device has received an impulse unlocking said lock or its controls, this impulse being obtained by putting the brake on parking or other vehicle control.

1 ". Improvement to the anti-theft devices acting on the braking or clutch circuits of vehicles, intended to be installed on mechanical anti-theft devices mounted on the hydraulic or pneumatic circuit actuating the brakes, and may be suitable for all types of land vehicles,

20. Device according to claim 1, characterized in that the means (1) for locking the lock (3) consists of an electromagnet mounted on the mechanism (2) actuated by said lock, and provided with 'a spring (4) forcing a steel axis (5) integral with the movable core (6) to penetrate into a bore (7) of said mechanism when the electromagnet is not under tension, preventing the withdrawal of the key (8) and the entry into service of the anti-theft device.

3. Device according to claim 2, characterized in that the blocking of the lock (3) is obtained by means of an electric pulse generated by the activation of the vehicle parking brake and sent into the conductors (9) supplying the coil (10) of the electromagnet causing the release of the steel axis (5) of the bore (7) and thus unlocking the lock.

4D, Device according to claims 2 and 3, characterized in that the current of the electric pulse is taken from the circuit supplying the bulb of the parking brake warning lamp of the vehicle, so that the supply of the coil (10) is automatically cut off when the vehicle ignition key is removed.