WO2016050876A1

WO2016050876A1 - Anti-theft device for a motor vehicle having a safety device preventing switching off of the motor, and motor vehicle comprising such an anti-theft device

Info

Publication number: WO2016050876A1
Application number: PCT/EP2015/072618
Authority: WO
Inventors: Emmanuel Bollinger; Philippe Demptos; Patrick TAPIN; Christophe Perrin; Patrice Poggi
Original assignee: U-Shin France Sas
Priority date: 2014-10-01
Filing date: 2015-09-30
Publication date: 2016-04-07
Also published as: FR3026699B1; EP3201052A1; FR3026699A1

Abstract

Anti-theft device (102) for a motor vehicle (100), comprising: a cylinder (108), a key reading device (110) intended to block rotation of the cylinder (108) in the absence of the key or when a key that is non-compatible with the reading device (110) is read, and to allow rotation of the cylinder (108) when a key compatible with the reading device (110) is read, a switch (114) intended to be driven by rotation of the cylinder (108) to take a first STOP position in which the switch (114) is intended to deactivate a motor of the motor vehicle (100), and a second ON position in which the switch (114) is intended to activate the motor. The anti-theft device (102) further comprises: a safety device (116) intended to prevent the switch (114) from leaving the ON position in the direction of the STOP position, and a speed measurement device (118) intended to measure a speed of the motor vehicle (100) and to supply an activation signal to the safety device (116) when the measured speed exceeds a predetermined threshold.

Description

TITLE

ANTI-THEFT FOR A MOTOR VEHICLE WITH A SAFETY DEVICE AGAINST THE EXTINGUISHING OF THE ENGINE AND VEHICLE

AUTOMOBILE COMPRISING SUCH AN ANTI-THEFT TECHNICAL FIELD

The present invention relates to the field of locks for motor vehicles, intended to allow the use of a motor vehicle to only holders of a suitable key.

BACKGROUND ART It is known to use a motor vehicle antitheft device of the type comprising:

- a body,

a cylinder mounted in rotation relative to the body,

a key reading device intended to block the rotation of the barrel in the absence of a key or when a key that is not compatible with the reading device is read, and to allow the rotation of the barrel when a key compatible with the reading device is read,

a switch intended to be driven by the rotation of the barrel to take a first position in which the switch is intended to deactivate a motor of the motor vehicle, and a second position in which the switch is intended to activate the motor.

In this known lock, the switch and the cylinder receiving the key are usually maintained in different positions. The first "STOP" position corresponds to the position where the engine and all electrical equipment are at a standstill. The "ON" or "ON" position corresponds to the position allowing to electrically power all the electronic components of the vehicle and keep the engine running. There is an intermediate position called "ACCESSORY" or "ACC" position where certain electronic equipment with the exception of engine are powered. The end position "STARTING" or "DEM" makes it possible to ignite the engine and is not intended to be a position in which the barrel and the switch remain locked.

Maintaining in the different positions is generally performed by a mechanical indexing system. The indexing is carried out for example using one or two indexing balls and one or two return springs of the ball or balls. Alternatively, the indexing is performed by one or two flexible blades. The indexing system keeps the lock in the ON position as long as the torque exerted on the key is less than a certain predefined value. Said value is typically between 0.15 Nm and 0.4 Nm. When the torque exerted on the key is greater than the preset value, the key goes to another position, and in particular to a position in which the switch extinguishes engine.

The disadvantage of the previous known lock is that it is very easy to leave the ON position voluntarily or untimely, which can be dangerous when the motor vehicle rolls. Indeed, the key can then be turned into a position in which the engine is stopped, while the operation of the engine is still necessary: when the motor vehicle is traveling at high speed, for example, 90 km / h, or when the motor vehicle is in the overtaking phase of another motor vehicle.

Inadvertent rotation of the key may for example occur when a driver's knee comes into contact with the key, or because of a very poor road surface causing high vibrations generating a torque greater than the indexing threshold. Another cause may also come from the fact that the key is attached to a rather heavy key ring, the weight of the keychain creating sufficient torque to pull the key out of the indexing position.

The object of the invention is to propose to remedy at least in part the preceding problems.

SUMMARY OF THE INVENTION

For this purpose, it is proposed a motor vehicle lock of the aforementioned type, characterized in that it further comprises: a safety device intended to prevent the switch from leaving its second position towards its first position,

a speed measuring device for measuring a speed of the motor vehicle and for supplying an activation signal to the safety device when the measured speed exceeds a predetermined threshold so that the safety device prevents the switch from leaving its second position; to reach his first position.

Optionally, the predetermined threshold is between 2 km / h and 10 km / h, for example 5 km / h.

Optionally also, the antitheft device comprises a kinematic chain between the barrel and the switch so that the rotation of the barrel drives the switch, the kinematic chain comprising in particular the barrel and the switch, and the safety device is intended to block a part of the kinematic chain, called biocable part, to prevent the switch from leaving its second position to reach its first position.

Also optionally, the safety device comprises a locking bolt of the biocable part and a device for actuating the locking bolt.

Also optionally, the device for actuating the locking bolt is an electromechanical device, and / or a pneumatic device, and / or a hydraulic device.

Optionally also, the antitheft device further comprises a rotary cam rotatably mounted relative to the body, the rotary cam being intended to be driven by the rotation of the barrel to activate a locking bolt of a steering column of the motor vehicle and wherein the biocable part is the rotating cam.

Also optionally, the cylinder is intended to take a first position in which the cylinder is intended to receive a key so that the key is read by the reading device while allowing the removal of the key, and a second position in which the cylinder is intended to hold the key.

Optionally also, the antitheft device further comprises a device for detecting the position of a lever of an automatic transmission of the motor vehicle, the detection device being further intended to supply an activation signal to the device when the lever is detected in at least one predetermined position for the safety device to lock the biocable piece to prevent the barrel from leaving its second position to reach its first position.

Optionally also, the rotation of the barrel from its first position to its second position is intended to drive the switch from its first position to its second position, wherein the safety device is further intended to block the biocable piece to prevent the barrel to leave its first position to reach its second position, and further comprising an identification device for identifying a driver of the motor vehicle and, in case of identification of the driver, to provide a deactivation signal to the safety device so that the safety device releases the biocable piece to allow the barrel to leave its first position to reach its second position.

It is furthermore proposed a motor vehicle comprising an antitheft device according to the invention.

DESCRIPTION OF THE FIGURES An embodiment of the invention will now be described by way of example only, with reference to the following figures.

Figure 1 is an exploded three-dimensional view of a lock according to the invention in a motor vehicle.

Figure 2 is a sectional view of a rotary cam and a security device of the antitheft device of Figure 1, wherein a locking bolt of the safety device is disengaged from the rotary cam.

Figure 3 is a view similar to Figure 2, wherein the locking bolt engages the rotary cam to block the latter.

DETAILED DESCRIPTION With reference to FIGS. 1 to 3, a motor vehicle comprising an antitheft device according to the invention will now be described.

Referring to Figure 1, the motor vehicle is shown schematically by a dashed frame and has the general reference 100.

The motor vehicle comprises firstly a lock 102. The antitheft device 102 first comprises a body 104A, 104B, 106 comprising two lateral half-shells 104A, 104B delimiting a substantially cylindrical internal space around an axis AA ', and a front cap 106 intended to close the space inside.

The lock 102 further comprises a cylinder 108 mounted in the interior space in rotation relative to the body 104A, 104B, 106 about the axis AA '.

The lock 102 further comprises a key reading device 110 intended to block the rotation of the barrel 108 in the absence of a key or when a key not compatible with the reading device 110 is read, and to allow the rotation of the cylinder 108 when a key compatible with the reading device 110 is read. In the example described, the cylinder 108 has a front slot (not visible) key receiving. In addition, the reading device 110 comprises flakes inserted radially into the barrel 108 and intended to engage with the front cap 106 of the body until a compatible key is read.

The lock 102 further comprises a rotary cam 112 mounted in the interior space in rotation relative to the body 104 A, 104B, 106 about the axis AA '. In the example described, the rotary cam 112 is integral in rotation with the barrel 108. The rotary cam 112 is intended to activate a bolt (not visible) for locking a steering column (not visible) of the motor vehicle. As is known per se, the rotary cam 112 activates for example the locking bolt of the steering column via a sliding zipper (not visible).

The lock 102 further comprises a switch 114 intended to be driven by the rotation of the barrel 108 to take several positions in order to alternately activate and deactivate various electrical components of the motor vehicle, and in particular: accessories, a drive motor of the motor vehicle and a motor starter. In the example described, the switch 114 is rotatably connected to the rotary cam 112 so that it can be driven from one position to the other by the rotary cam 112, itself driven by the barrel 108.

Thus, there is a kinematic chain between the cylinder 108 and the switch 114 allowing a rotation of the cylinder 108 drives the switch 114 to successively take the latter several positions. According to the embodiment of the invention, in a first position, called STOP position, the switch 114 is intended to disable the accessories, the motor and the starter.

In a second position, called ACC position, the switch 114 is intended to activate the accessories and to deactivate the engine and the starter.

In a third position, said ON position, the switch 114 is intended to activate, in addition to accessories, the engine so that it can be started and kept running, and disable the starter.

In a fourth position, called DEM position, the switch 114 is intended to activate, in addition to the accessories and the engine, the starter so that the latter can start the engine.

In the example described, since the rotary cam 112 is rotatably connected to the switch 114, and the barrel 108 is rotationally integral with the rotary cam 112, the barrel 108 and the rotary cam 112 are intended to take four positions. corresponding to the STOP, ACC, ON and DEM positions of the switch 114. For the sake of clarity, we will not speak the following positions STOP, ACC, ON and DEM of the lock 102.

According to another variant, the antitheft device of the invention does not include an ACC position. In this case, the kinematic chain between the cylinder 108 and the switch 114 allows rotation of the barrel 108 and the rotary cam 112 to drive the switch 114 from the STOP position directly to the ON position.

When it will be described that the lock 102 is in one of the positions mentioned above, it will mean that the barrel 108, the rotary cam 112 and the switch 114 are in this position.

The lock 102 further comprises a security device 116 for locking the lock 102 in certain positions. In the example described, the safety device 116 is intended to block a part of the kinematic chain connecting the barrel 108 to the switch 114. In the example described, the safety device 116 is intended to lock the rotary cam 112 .

The lock 102 further comprises a speed measuring device 118 for measuring a speed of the motor vehicle when the motor vehicle is driven by the motor, and to provide the security device 116, an activation signal when the measured speed exceeds a predetermined threshold and a deactivation signal when the measured speed falls below the predetermined threshold. Preferably, the predetermined threshold is between 2 km / h and 10 km / h, for example 5 km / h.

The speed measuring device 118 comprises, for example, a computer of the motor vehicle intended for example for regulating the speed of the motor vehicle.

The lock 102 further comprises a device 120 for detecting the position of a lever 122 of an automatic gearbox 124 of the motor vehicle. The lever 122 is in particular intended to take a first predetermined position, for example a position called PARKING position, in which the wheels of the motor vehicle are locked, and a second predetermined position, for example a position called DRIVE position in which a speed is engaged in the automatic gearbox 124 to connect the wheels to the engine. The detection device 120 is intended to detect in which position the lever 122 is located and to provide the security device 116 with an activation signal when the lever 122 is detected in a predetermined position other than its PARKING position, for example when the lever 122 is in its DRIVE position, and a deactivation signal when lever 122 is detected in its PARKING position.

The antitheft device 102 further comprises an identification device 126 for identifying a driver of the vehicle and, in case of identification of a conductor, for providing a deactivation signal to the security device 116 so that the security device 116 releases the biocable piece to allow the barrel 108 to leave its STOP position. The identification device 126 is furthermore intended to provide, for example during the removal of the key from the barrel 108, an activation signal to the safety device 116 to prevent the barrel from leaving its STOP position in the absence of identification of a driver.

With reference to FIGS. 2 and 3, the rotary cam 112 comprises a bolt 202 for locking the rotary cam 112 and a device 204 for actuating the locking bolt 202. The actuating device 204 of the locking bolt 202 is a device electromechanical device, and / or a pneumatic device, and / or a hydraulic device.

Furthermore, the rotary cam 112 is provided with three stops 206, 208, 210 that the locking bolt 202 is intended to engage to lock the rotary cam 112. More specifically, the first stop 206 is intended to be blocked by the locking bolt 202 when the rotary cam 112 is in the ON position to prevent the rotary cam 112 from leaving its ON position to reach its ACC position, and thus also its STOP position ( configuration shown in Figure 3). The second stop 208 is intended to be blocked by the locking bolt 202 when the rotary cam 112 is in the ACC position to prevent the rotary cam 112 from leaving its ACC position to reach its ON position. The third stop 210 is intended to be blocked by the locking bolt 202 when the rotary cam 112 is in the STOP position to prevent the rotary cam 112 from leaving its STOP position to reach its ACC position, and thus also its ON position.

An example of operation of the lock 102 will now be described.

Initially, the lock 102 is in the STOP position. The steering column is blocked and the safety device 116 is activated so as to lock the antitheft device 102 in the STOP position in order to prevent the antitheft device from passing to the ACC position, in particular in order to prevent the cylinder 108 from leaving its STOP position. In addition, in the absence of a key, the rotation of the barrel 108 is also blocked by the reading device 110.

A key is then inserted in the barrel 108.

The key is then read by the reading device 110. The key is assumed compatible so that the reading device 110 allows the rotation of the barrel 108. However, the safety device 116 always blocks the lock 102 in the STOP position.

The identification device 126 then identifies the driver. Following this identification, the identification device 126 provides a deactivation signal to the security device 116. Following receipt of the deactivation signal, the security device 116 releases the lock 102 to allow the lock 102 to pass. in ACC position.

The key is then turned in the barrel 108 by the driver to pass the lock 102 in ACC position. As a result, the rotary cam 112 unblocks the steering column and the switch 114 turns on the accessories of the motor vehicle 100.

The key is then turned in the barrel 108 by the driver to pass the lock 102 to the ON position. As a result, the switch 114 activates the motor of the motor vehicle 100. The key is turned by the driver to pass the lock 102 in the DEM position. As a result, the switch 114 activates the starter of the motor vehicle to start the engine.

The key is turned, usually not a reminder device (not visible) and / or by the driver, to return the lock 102 to the ON position. The engine is still running.

The motor vehicle then accelerates to exceed the predetermined threshold. The speed measuring device 118 detects that the speed of the motor vehicle exceeds the predetermined threshold and accordingly provides an activation signal to the security device 116 so that the latter blocks the lock 102 to prevent the lock 102 from leave its ON position towards its ACC position, in particular to prevent the switch 114 from leaving its ON position towards its ACC position. Thus, even if the key is manipulated by mistake or inadvertently when the vehicle is moving, the safety device 116 performs a non-return blocking of the switch 114. The latter is then not likely to switch to a position in which it would extinguish engine.

The motor vehicle then decelerates to below the predetermined threshold. The speed measuring device 118 detects that the speed of the motor vehicle passes below the predetermined threshold and consequently provides a deactivation signal to the security device 116 so that the latter releases the antitheft device 102 in order to allow the antitheft device 102 to leave its ON position to reach its ACC position, and in particular to allow the switch 114 to leave its ON position to reach its ACC position.

The key is then turned by the driver to pass the lock 102 in ACC position. As a result, the switch 114 deactivates the motor. In addition, the detection device 120 detects that the lever 122 of the automatic gearbox 124 is in a position other than the PARKING position, for example in the DRIVE position, and consequently provides an activation signal to the safety device 116. so that the latter blocks the lock 102 to prevent the lock 102 to leave its ACC position to reach its STOP position, in particular to prevent the barrel 108 to return to its STOP position. This blocking is intended to ensure that the key is retained by the barrel 108 to prevent withdrawal by the user as the lever 122 is not for example PARKING position. The lever 122 is then positioned by the driver in PARKING position. The detection device 120 detects that the lever 122 is in PARKING position and consequently provides a deactivation signal to the security device 116 so that it releases the lock 102 to allow the lock 102 to leave its ACC position for return to its STOP position, in particular to allow the barrel 108 to return to its STOP position where the driver can remove the key from the barrel 108.

The key is then rotated in the barrel 108 by the driver to pass the lock 102 to the STOP position. In this position, the barrel 108 allows the key to be removed.

The key is then removed from the barrel 108 by the driver. The identification device 126 detects the removal of the key and provides an activation signal to the security device 116 so that the security device 116 locks the antitheft device 102 in the STOP position to prevent the barrel 108 from leaving its STOP position by direction of its ACC position. Furthermore, the reading device 110 blocks the rotation of the barrel 108.

As is apparent from the reading of the preceding description, an antitheft device according to the invention has a protection against the extinction of the motor during the movement of the motor vehicle.

The present invention is not limited to the embodiment described above, but is instead defined by the following claims. It will be apparent to those skilled in the art that modifications can be made.

For example, in other embodiments of the invention, the barrel, rotary cam and switch may not be in the same positions all the time. For example, when the vehicle speed is above the predetermined threshold so that the rotating cam is locked in the STOP position, the cylinder could be decoupled from the rotary cam so as to freely rotate from its ON position to its STOP position, although the rotary cam, and the switch, remains in the ON position.

Moreover, the terms used in the claims should not be understood as limited to the elements of the embodiment described above, but should instead be understood as covering all the equivalent elements that a person skilled in the art can deduce from his knowledge. General. LIST OF REFERENCES

Motor vehicle 100

Anti-Theft 102

Half-shells 104A, 104B Front cap 106

Barrel 108

Reading Proof 110

Rotary cam 112

Switch 114 Safety device 116

Speed measuring device 118

Device for detecting the position of the gear lever 120

Gear lever 122

Automatic gearbox 124 Identification device 126

Locking pin of the lockable part 202

Device for actuating the blocking bolt of the blockable part 204

Stops 206, 208, 210

Claims

Anti-theft device (102) for a motor vehicle (100), comprising:

a body (104A, 104B, 106),

- a barrel (108) rotatably mounted relative to the body (104A, 104B, 106), - a key reading device (110) for blocking the rotation of the barrel

(108) in the absence of a key or when a key not compatible with the reading device (110) is read, and allowing rotation of the barrel (108) when a key compatible with the reading device (110) ) is read,

a switch (114) intended to be driven by the rotation of the barrel (108) to take a first position in which the switch (114) is intended to deactivate an engine of the motor vehicle (100), and a second position in which the switch (114) is intended to activate the motor, the antitheft device (102) being characterized in that it further comprises:

a safety device (116) for preventing the switch (114) from leaving its second position towards its first position,

a speed measuring device (118) for measuring a speed of the motor vehicle (100) and providing an activation signal to the safety device (116) when the measured speed exceeds a predetermined threshold so that the safety device (116) prevents the switch (114) from leaving its second position to reach its first position.

2. Antitheft (102) according to claim 1, wherein the predetermined threshold is between 2 km / h and 10 km / h, for example 5 km / h.

3. Antitheft device (102) according to claim 1 or 2, comprising a kinematic chain between the barrel (108) and the switch (114) so that the rotation of the barrel (108) drives the switch (114), the chain kinematics including in particular the cylinder (108) and the switch (114), and wherein the safety device (116) is intended to block a part of the kinematic chain, called biocable part (112), to prevent the switch (114) to leave his second position to reach his first position.

4. Anti-theft device (102) according to claim 3, wherein the safety device (116) comprises a bolt (202) for locking the biocable part (112) and a device (204) for actuating the locking bolt (202). ).

An anti-theft device (102) according to claim 4, wherein the actuating device (204) of the locking bolt (202) is an electromechanical device, and / or a pneumatic device, and / or a hydraulic device.

An anti-theft device (102) according to any one of claims 3 to 5, further comprising a rotary cam (112) rotatably mounted relative to the body (104A, 104B, 106), the rotary cam (112) being adapted for be driven by the rotation of the barrel (108) to activate a locking bolt of a steering column of the motor vehicle (100), and wherein the biocable part (112) is the rotary cam (112).

7. Antitheft device (102) according to any one of claims 3 to 6, wherein the cylinder (108) is intended to take a first position in which the cylinder (108) is intended to receive a key for this key to be read by the reading device (110) while allowing the removal of the key, and a second position in which the cylinder (108) is intended to hold the key.

8. Anti-theft device (102) according to claim 7, further comprising a device (120) for detecting the position of a lever (122) of an automatic transmission (124) of the motor vehicle (100), the device detecting means (120) is further adapted to provide an activation signal to the security device (116) when the lever (122) is detected in at least one predetermined position so that the security device (116) blocks the biocable coin (112) to prevent the barrel (108) from leaving its second position to reach its first position.

Anti-theft device according to claim 7 or 8, wherein the rotation of the barrel (108) from its first position to its second position is intended to drive the switch (114) from its first position to its second position, in which the device safety device (116) is further intended to block the biocable part (112) to prevent the barrel (108) from leaving its first position to reach its second position, and comprising in addition to an identification device (126) for identifying a driver of the motor vehicle and, in case of identification of the conductor, providing a deactivation signal to the security device (116) for the security device (116) to release the biocable piece (112) to allow the barrel (108) to leave its first position to reach its second position.

10. Motor vehicle (100) comprising an antitheft device (102) according to any one of claims 1 to 9.