FR2757474A1 - High security anti-theft device for motorcycles or similar vehicles - Google Patents

Abstract

Device designed to prohibit either by wire or radio the starting of the engine. It consist of two distinct parts (a,b) connected by a cable or by a radio connection using a given frequency. The first part (a) has at least a piece designed to stop rotation of one of the wheels and has a location (4,5,17) fitted with an electrical contact and an electronic card (7,19) fitted with a transmitter and an autonomous supply (8,20). The second part (b) consists of a sealed electronic housing. This housing is fitted with an electronic card (9,18) containing a frequency receiver. These parts are activated when the electronic card (7,19) of part (a) transmits an activating frequency to the card (9,18) of the part (b).

Description

HIGH SECURITY ANTI-THEFT DEVICE FOR MOTORIZED MACHINERY
DESCRIPTION
The present invention relates to a security anti-theft device for motorized vehicles. It relates more particularly to a security device preventing or prohibiting the theft of vehicles such as motorcycles or the like.

 The present invention relates to an anti-theft device making it possible to completely immobilize a motorized vehicle by a safe and effective blocking of the brake disc or of one of the wheels in general and to totally prohibit its use by locking the electrical functions start-up which can only be released by the activation of means in the possession of the user.

PRIOR ART
The prior art already describes various anti-theft devices for bicycles or for motorcycles.

 These anti-theft devices are most often stirrups or chains neutralizing the rotation of the front wheel or the rear wheel.

 Patent DE-A-3242377 (HONDA) describes an anti-theft device for motor cycles. This device comprises a flexible cable-shaped element comprising an internal core constituted by an optical fiber and two electric wires. This cable is intended to be wound around the element to be protected.

A means responds to a change in an electrical signal generated by one of the photoelectric elements and thereby transmits an alarm signal.

 Patent NL-A- 79.08716 (TECHNOVUM INC BV.) Describes an alarm device permanently attached to a bicycle or a motorcycle.

 It is made up of a box containing rechargeable batteries, a siren and an electronic detection circuit. In a pivoting cap of the housing is a coiled flexible cable, the free end of which passes through the wheels and around a stationary object. The free end is then placed in a socket and closed with a key.

 The cable has four strands, two strands being positively charged and two strands being negatively charged. If one of the strands is damaged, a siren howls and discourages any attempt at theft.

 Russian patent SU-A-1782853 (DEGTYAREV PRODN ASSOC.) Describes a steering lock for a motorcycle which has a hollow head in the frame of the vehicle. The hollow fork bar is located inside this head. A secret lock is fixed in the hollow bar of the fork. A central electrical connection is fixed on the fork and on command turns the secret lock.

 French patent FR-A-2 610 277 (AGL) describes a lock for two-wheeled vehicles comprising a housing screwed to the frame and provided with a locking bolt engaging the wheel and fixed by means of an electrically insulated lock.

 A metal cable is used to fix the machine to a static object. A generator delivers a high voltage which is triggered each time a third party tries to release the lock by the introduction of a false key or by any cut in the cable.

 French patent FR-A-2 705 077 (JOUVIN) describes an anti-theft device that can be mounted on a motorcycle brake disc. It comprises a monobloc stirrup having a body and a side plate connected to the body and separated from the latter by a slot. A lock is mounted in a housing provided in the body and a movable locking pin accommodates in a bore formed in the body and opens into the slot. The locking pin is capable of extending through the slot and can be immobilized by actuation of the lock. The locking pin passes through the side plate and can be removed manually from the bracket.

 French patent FR-A-2 702 728 (CARRERAS) describes an anti-theft device for a two-wheeled vehicle comprising an openwork brake disc. This anti-theft device comprises a stirrup intended to straddle the disc and a spindle movably mounted in a first branch of the stirrup between a retracted position for fitting and removing the anti-theft device on the disc and an exit position where the spindle passes through. an opening in the disc and enters at one end into a hole in the second branch of the stirrup to retain the latter on the disc.

The anti-theft device comprises means for locking the spindle in the exit position.

 These known anti-theft devices are effective against theft, but they have a major drawback, residing in the fact that the user can forget to dismantle the anti-theft device from its location before starting his vehicle.

This oversight can cause more or less material damage, therefore costly, and sometimes can lead to bodily injury for the driver.

OBJECT OF THE INVENTION
The object of the present invention is to remedy the drawbacks mentioned above of the devices of the prior art.

 An object of the invention is therefore to provide a high security device for a motorized vehicle, by prohibiting by any wired or radio means, the starting of the vehicle when the anti-theft device is in place and in the active position.

To this end, the invention relates to a safety device for a motorized vehicle, this device consists of two distinct elements A and B connected by wire means or radio means using a given frequency,
the first element A consists of two separate parts, the first part is of a bracket made of treated steel or other high-strength material in the form of U, flexible or rigid, the second part is a removable receiving block which is locked to the caliper by means of a security lock. The removable unit is provided with two housings provided with safety means, one of the housings is equipped with an electrical contact. The unit also includes an electronic card with a transmitter and an autonomous power supply.

the second element B consists of a waterproof housing provided with:
- an electronic card with a receiver of the frequency emitted by the card of element A, a low voltage power supply.

 - And means preventing the starting of the machine, these means are active when the electronic card of element A transmits an activation frequency to the electronic card of element B.

The invention is shown without limitation in the accompanying drawings, in which:
Figure 1 is a schematic view of a first embodiment of the device according to the invention.

FIG. 2a is an enlarged view of element A of the device according to the
Figure 1, in the inactive locking position.

FIG. 2b is an enlarged view of element A of the device according to the
Figure 1, in the active locking position.

 Figure 3 is schematic view of a second embodiment of the device according to the invention.

 Figure 4 is schematic view of another embodiment of the device according to the invention.

Figure 5 is a schematic view of the electrical circuit of the element
AT.

Figure 6 is a schematic view of the electrical circuit of the element
B.

To this end, the invention relates, in a first preferred embodiment shown in FIGS. 1, 2a and 2b, to a safety device for a motorized vehicle, this device consists of two distinct elements A and B, connected by wire means or radio means using a given frequency,
The first element A is made up of two equally distinct parts (1) (2), the part (1) is a stirrup made of treated steel or other high-strength material, U-shaped, flexible or rigid, the part (2) is a removable receiving block, locked to the bracket (1) by means of a safety lock (3), the block (2) is provided with two housings (4) (5), the housing (4) is provided with an electrical contact (6), the removable receiving unit (2) also includes an electronic card (7) provided with a transmitter and an autonomous power supply (8),
the second element B consists of a waterproof electronic box acting as a black box, this box is provided with:
- an electronic card (9) equipped with a receiver of the coded frequency emitted by the card of element A, of a low voltage supply
- And means preventing the starting of the machine, these means are active when the electronic card (7) of element A transmits an activation frequency to the electronic card (9) of element B.

 These means act on a certain number of outputs authorizing different electrical functions controlled by the closing of a circuit, these functions relate to the starting circuit, the self-powered siren, the lighting circuits.

According to another characteristic of the invention as shown in Figures 2a and 2b, each of the ends (la) and (lob) of the U-shaped stirrup (1) is provided with two peripheral grooves or grooves (la) (1 b) sufficiently spaced apart to mark two positions,
the first position (la), allows the locking of the anti-theft device in the inactive or storage position,
the second position (it), activates the electrical contact (6) when the ends are fully engaged in their respective housing, which authorizes the activation of the safety device by sending a frequency from the element A to the element B.

 According to Figures 1, 2a and 2b, the ends of the U-shaped bracket, after having trapped any of the wheels, are intended to be placed in the housings of the removable receiving block.

When the end of the branch of the flexible or rigid stirrup (1) is disposed at the end of its travel in the housing (4) of the removable receiving block (2) (Figure 2b), the contact (6) is put in action and the electronic card (7) then transmits an activation frequency to the element's receiving card (9)
B which controls the electrical start-up functions of the machine.

 If the ends of the branches are not at the end of their travel in the housings (4) and (5) of the removable receiving unit (2) (Figure 2a), the contact (6) is inoperative and the electronic card (7) transmits a deactivation frequency at element B, the receiving card (9) of which controls the starting circuit of the machine.

According to another embodiment of the invention as shown in FIG. 3, the element A is constituted by a monobloc stirrup (11) in treated steel or other removable high resistance material, this stirrup (11) is intended for be positioned, for example, on one of the brake discs (12), so as to prevent rotation of any of the wheels. The stirrup (11) is provided with a safety lock (13) which controls a spindle (14) mounted to move from the external branch (15) of the stirrup to the internal branch (16) of the latter. ci, the internal branch (16) of the stirrup comprises at the end of the spindle stroke, a housing (17) provided with an electrical contact (18), this contact (18) is connected to an electronic card (19) mechanically protected and arranged on the part (15) of the stirrup and supplied by a battery (20).

According to another embodiment, as shown in FIG. 4,
The element A consists of a spindle (22) controlled by a lock (23) mounted to move in two separate elements (24) (25) each secured to a fixed point of the machine, such as fork said pin passes through the element (24) and is housed in the element (25) provided with a limit switch housing and an electrical contact (26); an electronic card (27) is arranged on one of the two elements secured to the fixed point and powered by a battery (27a).

 Preferably, the transmitter and the receiver are coded frequency transmitter and receiver.

 According to the invention, the frequency transmitter is supplied by an autonomous electrical source, for example a battery or a battery.

 The frequency receiver is powered by the vehicle battery providing low voltage current.

 Preferably, the transmitter is provided with a cut-off delay.

 The means preventing the starting of the machine are made inactive when the spindle is unlocked, by the transmission of a deactivation frequency to element B.

 In an alternative embodiment of the invention, the deactivation frequency can advantageously be sent by a remote transmission device such as a remote control.

 The present invention as described makes it possible to produce a very high security anti-theft device for any motorized vehicle and to obtain optimum security both on the material and physical level compared to all known mechanical locking anti-theft means.

 Figure 5 shows schematically the electrical circuit of element A. The electronic card (28) which emits a frequency is supplied with direct current by an autonomous source, for example by a battery or a battery (29). The current supplied by the autonomous source is a low voltage current. When the contact (30) is activated by the contact established by the end of the pin or by one of the branches of the U-shaped stirrup, actuating the electrical contact (6), the circuit (31) is closed and the card (28) transmits an activation frequency for the interruption of the starting circuit. When the contact (30) is not activated, the circuit (31) is open and the card (28) emits a deactivation frequency for the interruption of the starting circuit.

 The electrical circuit further includes a cut-off time delay (32).

 The device according to the invention comprises a second element B constituted by an electronic box which acts as a black box. This waterproof box is supplied by a low voltage current, coming from the battery of the machine.

 It is provided with an electronic card (33) provided with a frequency receiver and with a certain number of outputs which allow electrical functions preventing the starting and starting of the machine.

 Figure 6 shows the receiving card (33). It comprises a power supply (34) (35), and a certain number of outputs which authorize different electrical functions controlling the closing of circuits. These functions relate to the circuit (36) for electric starting of the machine, the siren, self-powered, the lighting circuits, etc.

 When the transmitting card (28) transmits an activation frequency, the receiving card (33) activates the starting circuit breaker. When the element A is removed from its active locking location, the prohibition on starting the machine is automatically lifted by the transmitting card (28) which transmits a deactivation frequency to the receiving card (33) which deactivates the starting circuit, the self-powered siren, the lighting circuits ,.

 The frequency transmitter (28) is mechanically protected.

 The invention also relates to all the variant embodiments of the device described above, taken separately or in combination.

Claims (11)

 1. Safety device for a motorized vehicle preventing any wired or radio means from starting said machine, characterized in that it consists of two distinct elements A and B connected by a wired link or by a radio link using a given frequency,  in that the first element A consists of at least one part intended to prevent the rotation of any one of the wheels and comprising at least one housing (4,5,17) provided with an electrical contact and an electronic card (7.19) provided with a transmitter and an autonomous power supply (8.20) and the second element B consists of a waterproof electronic box acting as a black box, this box is provided with an electronic card ( 9.18) provided with a frequency receiver, these means are active when the electronic card (7.19) of element A transmits an activation frequency to the card (9.18) of element B . 2. Safety device according to claim 1, characterized in that the first element A consists of two equally separate parts (1) (2), the part (1) is a stirrup made of treated steel or other material of high resistance in U-shaped, flexible or rigid, the part (2) is a removable receiving block locked to the stirrup (1) by means of a security lock (3), in that said block (2) is provided with two housings (4) (5), the housing (4) is provided with an electrical contact, said removable receiving unit (2) also comprises an electronic card (7) provided with a transmitter and with an autonomous power supply (8),  in that the second element B consists of a waterproof electronic box acting as a black box, this box is provided with an electronic card (9) provided with a receiver of the coded frequency emitted by the card of the element A, a low voltage supply and means preventing the starting of the machine, in that these means are active when the electronic card (7) of element A, transmits an activation frequency to the card (9 ) of element B, in that these means act on a certain number of outputs authorizing different electrical functions controlled by the closing of a circuit, these functions relate to the starting circuit breaker, the coil circuit breaker, the general circuit breaker or the self-powered siren.  3. Safety device according to claim 2, characterized in that each of the ends (la) and (lob) of the U-shaped stirrup (1) is provided with two grooves or peripheral grooves (la) (lob) sufficiently spaced spacers to mark two positions,  the first position (la), allows the locking of the anti-theft device in the inactive or storage position,  the second position (lob), activates the electrical contact (6) when the ends are completely engaged in their respective housing, which authorizes the activation of the safety device by sending a frequency from the element A to the element B.  4. Safety device according to claim 1, characterized  in this element A is constituted by a monobloc caliper (11) made of removable high strength treated steel, in that this caliper (11) is intended to be positioned, for example, on one of the brake discs (12 ), so as to prohibit the rotation of any one of the wheels, in that this stirrup (11) is provided with a safety lock (13) which controls a spindle (14) mounted to move from the external branch ( 15) from the stirrup to the internal branch (16) thereof, in that the internal branch (16) of the stirrup comprises at the end of the spindle travel, a housing (17) provided with '' an electrical contact (18), in that, this contact (18) is connected to an electronic card (19) mechanically protected and arranged on the part (15) of the stirrup, powered by a battery (20)  in that the second element B consists of a waterproof electronic box acting as a black box, this box is provided with an electronic card (18) provided with a coded frequency receiver and with a certain number of outputs authorizing different electrical functions controlled by the closing of a circuit, these functions relate to the starting circuit, the self-powered siren, the lighting circuits, etc.  5. Safety device according to claim 1, characterized  in that the element A consists of a spindle (22) controlled by a lock (23) mounted to move in two separate elements (24) (25) each secured to a fixed point of the machine, such as fork, said spindle passes through the element (24) and is housed in the element (25) provided with a limit switch housing and provided with an electrical contact (26); an electronic card (27) is arranged on one of the two elements integral with the fixed point supplied by a battery (27a).  in that the second element B consists of a waterproof electronic box acting as a black box, this box is provided with an electronic card (18) provided with a coded frequency receiver and with a certain number of outputs authorizing different electrical functions controlled by closing a circuit, these functions relate to the starting circuit, the self-powered siren, the lighting circuit, etc.  6-Safety device according to any one of claims 1 to 5 characterized in that the transmitter (28) and the receiver (33) are coded frequency transmitter and receiver.  7. Safety device according to any one of claims 1 to 6 characterized in that the frequency transmitter (28) is supplied by an autonomous electrical source (29), for example a battery or a battery.  8. Safety device according to any one of claims 1 to 7 characterized in that the frequency receiver (33) is powered by the battery of the machine providing a low voltage current.  9. Safety device according to any one of claims 1 to 8 characterized in that the transmitter (28) is provided with a cut-off delay (32).  10. Safety device according to any one of claims 1 to 9 characterized in that the means preventing the starting of the machine are made inactive when the spindle is unlocked, by transmitting a deactivation frequency to the electronic card. of element B.  11. Safety device according to any one of claims 1 to 10 characterized in that the means preventing the starting of the machine are made inactive by sending a deactivation frequency by a remote transmission device such as a remote control.