EP1335330A2 - Entriegelungssystem einer Kraftfahrzeugöffnung - Google Patents

Entriegelungssystem einer Kraftfahrzeugöffnung Download PDF

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Publication number
EP1335330A2
EP1335330A2 EP20030290301 EP03290301A EP1335330A2 EP 1335330 A2 EP1335330 A2 EP 1335330A2 EP 20030290301 EP20030290301 EP 20030290301 EP 03290301 A EP03290301 A EP 03290301A EP 1335330 A2 EP1335330 A2 EP 1335330A2
Authority
EP
European Patent Office
Prior art keywords
lock
opening
unlocking
vehicle
circuit
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP20030290301
Other languages
English (en)
French (fr)
Other versions
EP1335330B1 (de
EP1335330A3 (de
Inventor
Jean-Marc Belmond
Frédéric Burkat
Sylvain Chonavel
Yi Hwa Chu
Pascal De Vries
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Inteva Products France SAS
Original Assignee
ArvinMeritor Light Vehicle Systems France SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by ArvinMeritor Light Vehicle Systems France SA filed Critical ArvinMeritor Light Vehicle Systems France SA
Publication of EP1335330A2 publication Critical patent/EP1335330A2/de
Publication of EP1335330A3 publication Critical patent/EP1335330A3/de
Application granted granted Critical
Publication of EP1335330B1 publication Critical patent/EP1335330B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B81/00—Power-actuated vehicle locks
    • E05B81/02—Power-actuated vehicle locks characterised by the type of actuators used
    • E05B81/04—Electrical
    • E05B81/06—Electrical using rotary motors
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B81/00—Power-actuated vehicle locks
    • E05B81/12—Power-actuated vehicle locks characterised by the function or purpose of the powered actuators
    • E05B81/14—Power-actuated vehicle locks characterised by the function or purpose of the powered actuators operating on bolt detents, e.g. for unlatching the bolt
    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
    • G07C9/00—Individual registration on entry or exit
    • G07C9/00174—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys
    • G07C9/00309—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys operated with bidirectional data transmission between data carrier and locks
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B81/00—Power-actuated vehicle locks
    • E05B81/54—Electrical circuits
    • E05B81/90—Manual override in case of power failure
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B85/00—Details of vehicle locks not provided for in groups E05B77/00 - E05B83/00
    • E05B85/01—Mechanical arrangements specially adapted for hands-free locking or unlocking
    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
    • G07C9/00—Individual registration on entry or exit
    • G07C9/00174—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys
    • G07C2009/00579—Power supply for the keyless data carrier
    • G07C2009/00603—Power supply for the keyless data carrier by power transmission from lock
    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
    • G07C9/00—Individual registration on entry or exit
    • G07C9/00174—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys
    • G07C2009/00753—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys operated by active electrical keys
    • G07C2009/00769—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys operated by active electrical keys with data transmission performed by wireless means
    • G07C2009/00777—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys operated by active electrical keys with data transmission performed by wireless means by induction
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T292/00—Closure fasteners
    • Y10T292/08—Bolts
    • Y10T292/1043—Swinging
    • Y10T292/1044—Multiple head
    • Y10T292/1045—Operating means
    • Y10T292/1047—Closure
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T292/00—Closure fasteners
    • Y10T292/08—Bolts
    • Y10T292/1043—Swinging
    • Y10T292/1075—Operating means
    • Y10T292/1082—Motor
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T70/00—Locks
    • Y10T70/50—Special application
    • Y10T70/5889—For automotive vehicles
    • Y10T70/5973—Remote control
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T70/00—Locks
    • Y10T70/50—Special application
    • Y10T70/5889—For automotive vehicles
    • Y10T70/5973—Remote control
    • Y10T70/5978—With switch

Definitions

  • the invention relates to the field of motor vehicle locks, and more specifically the unlocking of the locks equipping the doors of the motor vehicles.
  • a motor vehicle lock allows a closed position to be maintained opening; it also allows to unhook the opening by action on an order internal or external opening connected to the lock and actuated by a user.
  • a lock is typically mounted on the opening of the vehicle. She has a bolt whose function is to fix a mounted finger relative to the lock on the vehicle, or on the contrary to release the finger.
  • opening the lock the action of releasing the finger, which allows the opening of the opening; conversely, we Keeping your finger in the lock is called closing the lock. prohibits unhooking the opening.
  • the bolt is biased towards its closed position by the finger when closing the door, a pawl preventing the return of the bolt towards its open position and maintaining the lock in the closed position in the absence of external stress on the lock.
  • Using a lock poses the following problems.
  • the presence of the lock is a strong architectural constraint: the introduction of an object into the window joint can allow a thief to act on the lock-bolt link.
  • This problem is solved by bringing the lock closer to the lock or by providing a connection between the lock and the lock that cannot be manipulated through the window seal.
  • the solution generates a constraint on the relative position of the lock and the lock ; in the other case, the solution generates a constraint on the type of movement link.
  • the position of the lock is also constrained by the need to allow the lowering the window.
  • a solution of rape consists in tearing off the door lock: it is therefore proposed to plan around of the bolt a reinforcement of the sheet metal constituting the door.
  • the vehicle marketed by Peugeot under the brand 406 presents a key fitted with a transponder, i.e. a passive circuit supplied from a distance and searchable remotely.
  • a power supply and interrogation circuit transponder is provided in the vehicle and prevents starting in the absence of a transponder response; in this application the power circuit and muting is designed to interrogate the transponder when the key is in the neighborhood of the steering wheel.
  • the circuit operates at frequencies close to 125 kHz, say low frequencies, with a range of around 5 cm.
  • FR-A-2 740 501 offers a hands-free unlocking and / or opening the trunk of a motor vehicle.
  • One or two antennas are provided on the vehicle ; the presentation of a transponder in front of the antenna (s), following a predetermined sequence causes the unlocking and / or opening of the chest.
  • the system proposed in this document requires a supply by the vehicle battery for unlocking and opening and therefore involves providing the vehicle with a lock used in the event of a hands-free system failure.
  • US-A-5 134 392 describes a keyless opening system.
  • the system opening uses a transmitter powered by a long-life battery.
  • EP-A-0 694 644 proposes a lock with an electric vehicle opening automobile.
  • the opening of the lock is ensured electrically by the operation an actuator powered by the vehicle battery.
  • An energy source is planned backup consisting of a backup battery installed in the door to which the lock is associated. In the event of a malfunction of the supplied power supply by the vehicle battery, the lock can be opened thanks to the power supply from the backup battery. This document is silent as for the lock used.
  • This solution first poses a problem with the dimensioning of the motor. opening the lock; indeed the engine must allow not only the opening of the lock under normal conditions of use, but also opening the lock in degraded conditions, for example after an impact.
  • the motor and its reducer are therefore designed to allow opening in conditions degraded, which leads to electrical and mechanical oversizing by as required under normal conditions.
  • the dimensioning of the motor therefore poses a problem with emergency power; it must indeed be able to provide the motor with the energy necessary for opening under heavy load.
  • US-A-5,552,641 and EP-A-1,052,353 disclose opening systems for motor vehicles, based on portable transceivers or transponders. These documents do not explain what type of lock is used for the vehicle.
  • WO-A-01 23695 proposes a transmitter intended to actuate a system of motor vehicle conviction. Contacts are provided on the transmitter, to compensate for a fault in the transmitter or vehicle battery.
  • the signal delivered under normal conditions can be a signal of software unlocking of the electric opening of the lock; it can also be a clutch signal from the mechanical opening of the lock.
  • the interrogation circuit can remotely supply the portable object to interrogation. We can also foresee that the portable object has contacts and that the interrogation circuit has contacts adapted to mate with the contacts of the portable object.
  • the system advantageously has an emergency power supply distinct from main vehicle power; the interrogation circuit can then be powered by emergency power.
  • the system can also include a unlocking mechanism receiving the unlocking signal from the interrogation circuit.
  • the unlocking mechanism can be connected to the emergency power supply.
  • This emergency electronics advantageously has a standby state which it goes out on receipt of a signal from a control actuation sensor interior opening or an exterior opening command.
  • the unlocking mechanism may include an electric motor with an electrical power of less than 10 W.
  • the invention also provides a lockless opening having such a system and a vehicle having a lockless opening and such a system.
  • the invention proposes, for unlocking a vehicle opening automobile, to use a portable object supplied with the interrogation.
  • a portable object supplied with the interrogation.
  • the interrogation circuit is capable of interrogating the object then that it is outside the vehicle, while also ensuring its supply electric. If the results of the query show that the portable object has a authorization to unlock the vehicle locks, the circuit provides the door lock opening a signal authorizing unlocking.
  • the lock is an electric lock with a mechanical opening switchable. In normal operation, when the vehicle battery provides a sufficient power, such a lock can be used as an electric lock. However, in the event of a power failure, the lock can be engaged by using reduced power; this limits the electrical power required to to remedy the failures.
  • the inventive system withstands power failure (possible) of the portable object, because the interrogation circuit is able to power the object when it is outside the vehicle.
  • the system of the invention also resists failure of the vehicle's power supply, made of the mechanical opening of the electric lock. Just plan opening a low-power emergency power supply to allow the mechanical opening clutch; alternatively, this mechanical opening can be permanently engaged, as explained with reference to Figure 6.
  • FIG. 1 is a block diagram of the various elements of a system according to a embodiment of the invention; a portable object 2 has been shown in the figure.
  • the object is supplied with interrogation by the interrogation circuit: it is therefore likely to answer the interrogations of an interrogation circuit which feeds it, without the need for a clean power supply such as a battery or a battery.
  • the portable object can be powered remotely, i.e. without contact ; a first solution is to use a transponder; a transponder presents a coil which is used on the one hand for the remote supply of the object to using a magnetic field and secondly for issuing a response.
  • FIG. 1 We have shown in Figure 1 the case of a transponder, with a coil 4 and a circuit 6 powered by the coil and likely to short-circuit the coil for transmission of an answer.
  • the transponder can be powered remotely and interrogated at low frequencies, for example at a frequency of 125 kHz.
  • the portable object is powered by means of contacts, in providing corresponding contacts on the interrogation circuit; querying Advantageously then takes place by modulating the supply voltage for limit the number of contacts.
  • the object could thus have the shape of a card that we would introduce into a slot, for example between the door and the amount. This card reading position would protect the power contacts and / or card interrogation.
  • Portable object has a memory 8, dead, reprogrammable or more generally likely to store an identifier even when the object is not powered.
  • the identifier is used to characterize the object.
  • the use of such identifier stored in memory provides more combinations than mechanical combinations of a key.
  • storage of the identifier on 15 binary elements provides more than 30,000 combinations, while the number of combinations of a mechanical key is around 3000.
  • the memory 8 is connected to the circuit 6, so as to allow the interrogation of the circuit the transmission of the identifier from the portable object to the circuit question. From this point of view, we can use any interrogation protocol appropriate, providing if necessary encryption of the data transmitted, a code revolving, and all known security solutions for other applications in the state of the art. As an example, we can use when receiving N incorrect codes temporary or permanent blocking of the door.
  • circuit 6 and memory 8 are only a schematic representation; so, the distinction between circuit 6 and memory 8 is made only for the clarity of the explanation, the circuit and the memory can be perfectly implemented using of a single component. It is also possible to provide that the portable object is used for other purposes; it could thus be used for an order, by providing, in addition to the circuit supplied with the interrogation which has just been described, a battery supply or battery and a high frequency transmission circuit. In this case, circuit 6 could be powered by the normal battery and not be powered by the circuit only in the event of a battery or battery failure.
  • the system has an interrogation circuit 10 provided on the vehicle.
  • This circuit ensures the supply of the portable object during interrogation.
  • the supply is ensured thanks to an antenna 12 emitting a magnetic interrogation field, which serves for the coil supply and is modulated for interrogation.
  • the power supply 12 is controlled by a control logic 14; this logic controls the power supply to the portable object during the interrogation, the interrogation of the subject and the responses provided by it. Based on these answers, the logic 14 sends an unlocking signal.
  • a memory 16 storing an identifier and the interrogation of the portable object consists in compare the identifiers of memories 16 and 8; the unlock signal is issued if the comparison shows that the identifiers are identical.
  • circuit 10 is also advantageous for the circuit 10 to be supplied by a supply 18 separate from the main vehicle supply; the presence of such power - battery, battery, supercapacitor or other - allows to overcome any main vehicle power failure.
  • a supply 18 separate from the main vehicle supply; the presence of such power - battery, battery, supercapacitor or other - allows to overcome any main vehicle power failure.
  • the circuit 10 is powered by the main power supply of the vehicle, or that the power supply 18 is used only as backup, in the event of failure of main power.
  • Figure 1 also shows a unlocking mechanism 20 of the door of the vehicle.
  • Mechanics 20 receives the unlocking signal emitted by the circuit 10 and proceeds to unlock the door on receipt of this unlocking signal.
  • Figure 1 also shows that the mechanics of unlocking 20 is supplied by power supply 18, at least in emergency mode. Again, such a supply of the unlocking mechanism, distinct from the main power supply of the vehicle, ensures that unlocking remains possible, even when the main vehicle power fails.
  • a first solution is to use a lock electromechanical, in which unlocking is provided by a motor specific.
  • the unlocking motor is typically a motor operating at a voltage of 6 V, with an electrical power of 10 W.
  • the invention uses an electric lock, with a mechanical opening switchable.
  • a lock is described below with reference to Figures 2 to 5 and is described in more detail in the application filed by the plaintiff the same date that this application is entitled "Motor vehicle lock".
  • the unlocking signal simply causes the clutch to open mechanical, so that it is possible to open the door by mechanical action on the handle.
  • Figure 6 shows another example of an electric opening lock and with mechanical opening, which can also be used in a system according to the invention.
  • backup power can be provided at using a battery, a battery, a capacitor, providing a lower voltage or equal to 6 V. This value allows, in addition to actuating the mechanics of unlocking a power supply to the interrogation and an interrogation of the object portable.
  • the position of the interrogation circuit 10, of the supply 18 and of the unlocking mechanism 20 may vary in the vehicle.
  • the only constraint is that the interrogation circuit must be able to power and interrogate the portable object while it is outside the vehicle.
  • the interrogation circuit is located on a non-metallic part of the vehicle, such as a door handle, a door pillar trim, a protective strip, mirror shell, lens, etc. Other positions may be preferred for other types of interrogation circuit, as in the door seal mentioned above.
  • the circuit 10 can also in this case be part of the main electronics of holder - while keeping a separate power supply if necessary 18. This solution provides information to order an unlocking, in particular in the event of an emergency.
  • a lock is described below with reference to FIGS. 2 et seq. advantageous in the context envisaged.
  • This is an electric opening lock, but which has a mechanical engagement opening. Mechanical opening can be engaged under the action of the interrogation circuit 10, to allow opening door even if the vehicle's power supply fails.
  • FIG 2 is a schematic view of a lock according to one embodiment of the invention, in a closed and locked position.
  • the figure shows the bolt 32, which is mounted for rotation about an axis 34.
  • the bolt is biased by a spring in the direction of clockwise, towards its open position.
  • FIG. 2 also shows a ratchet 36, as well as a ratchet 38.
  • the pawl and the counter pawl are movable in rotation about an axis 40.
  • the pawl and the ratchet appear more clearly in Figure 3. They are integral one of the other: the use of two parts is advantageous for mounting constraints.
  • the rotation of the ratchet 36 and the ratchet 38 about the axis 40, in the direction counterclockwise, has the effect of allowing rotation in the direction anticlockwise of the bolt 32, and therefore the opening of the lock.
  • the ratchet 36 has a shape substantially circular; it has a first bearing 42 and a second bearing 44. A support on one or the other of these spans makes it possible to rotate the pawl in the direction counterclockwise.
  • the pawl 38 is integral with the pawl 36 of so as to be rotated by the counter-pawl when it rotates in the counterclockwise. It has a finger 46, which comes into contact of the bolt to prevent its movement when the lock is closed and locked, in the position shown in Figure 2. The movement of finger 46 releases in rotation of the bolt, as shown in figures 3 or 5.
  • the ratchet and the ratchet are biased by a spring, not shown, towards the closed position and conviction shown in Figure 1.
  • FIG. 2 also shows a lever 48 for manual or mechanical opening of the door.
  • the lever 48 is mounted in rotation about the axis 40 of the pawl; he is connected by an external opening cable or rod 50 to an opening control exterior not shown. It is connected by an opening cable or rod 52 inside an interior opening control, not shown. actuation of the exterior (respectively interior) opening control causes, by through the cable 50 (respectively 52) a rotation of the lever 48 around the second axis 40, counterclockwise.
  • Leverage 48 also has a scope 54 for driving the ratchet 36 when the mechanical opening of the lock is engaged, as explained below in reference to FIGS. 4 and 5.
  • the lever 48 also has a light 56, the function will appear in the following description.
  • a spring not shown, recalls the lever 48 towards its closed position shown in the figure, in the direction of Clockwise.
  • Figure 2 shows under reference 58 an electric opening motor of the lock.
  • the motor 58 drives in translation along the vertical axis of Figure 1 a drive arm 60.
  • the motor is electrically powered by the circuit main vehicle electrical; it is sized to allow the opening of the lock and door under normal operating conditions.
  • the lock has a wedge 62 for opening authorization.
  • This wedge 62 is mounted at the end of an arm 64.
  • the arm has a stud 66, which engages in the light 56 of the lever.
  • a spring 68 biases the arm 64 towards the left in Figure 2.
  • the pin 66 is pressed against the left end of the light 56, under the effect of the bias of the spring 68; the arm 64 and wedge 62 are then brought to the right by the lever and separated from the first bearing 42 of the pawl and of the drive arm 60.
  • the lever 48 rotates around axis 40 anticlockwise, as shown in Figure 3.
  • the spring 68 biases the arm 64 to the left, and the wedge 62 is positioned between the first span 42 of the counter-pawl and drive arm 60.
  • the wedge authorizes the triggering of the excitation of the motor 58 by closing a contact ; its position between the arm 60 and the first bearing 42 of the pawl allows the opening of the door by excitation of the motor 58.
  • the cylindrical or rounded shape of the wedge 62 facilitates the release of the wedge under the effect of the lever return spring 48, in the case where the arm 60 would be stuck in the position shown in Figure 5 or 4.
  • the release of the wedge prevents in this case the lock from being locked in a position opened.
  • FIG. 2 finally shows the elements of the clutch mechanism of mechanical opening of the lock.
  • This mechanism includes an arm 70, which is rotatably mounted around a third axis 72.
  • the movement of the arm 70 around axis 72 is controlled by a standby motor 74 operating under very low charge.
  • the motor makes it possible to rotate the arm 70 in one direction or the other, for the reasons explained below.
  • On the arm 70 is mounted a clutch finger mechanical 76.
  • the reference 80 designates a member for guiding the end 78 of the finger 76.
  • the finger 76 is rotatably mounted on the arm 70, so as to allow its end 78 to turn around the second axis 40 at the same time as the lever and the ratchet.
  • a first contact is provided on the exterior opening control and is activated when the user manipulates this command.
  • a second contact is activated by the opening authorization wedge 62, when it is interposed between the arm 60 and the first bearing 42 of the pawl.
  • Door contact open presents two states representative of the open or closed state of the door.
  • Figure 3 This figure shows the movement of the lever, in the event of action on the exterior opening control (respectively interior).
  • Cable or rod 50 (respectively 52) transmits the movement of the opening command to the lever, which rotates around the second axis 40, as represented by the arrow 90 (respectively 92).
  • the authorization wedge opening 62 is driven to the left of Figure 2, as shown by the arrow 94; it comes between the arm 60 and the first bearing 42 of the pawl. At the end of its travel, it actuates the second contact.
  • Figure 3 also shows the movement of the arm 60 under the action of the motor. 58.
  • the lever 48 is shown behind the ratchet and the counter-ratchet.
  • Activation of the second contact by wedge 62 causes the excitation of the motor 58, which drives the arm 60 towards the wedge 62 and the first bearing of the ratchet, as represented by the arrow 96.
  • the pawl and the ratchet are rotated around the second shaft 40, in the counterclockwise; this rotational movement is shown in the Figure 3 by arrow 98.
  • Figures 4 and 5 show views of the lock of Figure 2, showing the movement of the different parts of the lock during the mechanical opening of the lock.
  • Mechanical opening is controlled by the unlocking signal emitted by circuit 10, when the vehicle's power supply fails.
  • Figure 4 shows a view of the lock after powering the motor.
  • emergency 74 to engage the mechanical opening of the lock As the figure, the triggering of the emergency motor 74 causes the rotation of the arm 70 around axis 72, counterclockwise as symbolized in Figure 4 by arrow 102. Due to this rotation, the clutch finger mechanical moves towards the lever 48 and the ratchet 36.
  • the presence of the guide member 80 helps the end 78 of the finger to come between the bearing 54 of the lever 48 and the second bearing 44 of the pawl.
  • the mechanical opening of the lock is engaged, insofar as actuation of the exterior or interior opening control causes the opening of the lock, independently of the motor 58, as explained in reference to figure 5.
  • the motor 74 is simply sized to allow the rotation of the arm 70 and movement of the finger 76; therefore, this engine can be sized for low load; we can typically use for motor 74 a DC motor with 10 watts of electric power and no-load speed of around 4,000 to 6,000 rpm.
  • Power here means the simple product of setpoint voltage by motor intensity at start-up; this value is not representative of the average power consumed by the engine (the ratio between the energy consumed by the motor during the rotation of the arm 40 and the duration of this rotation). In practice, the average power consumed by the motor is around 1 W.
  • the emergency power supply 18 can be compact and inexpensive, as indicated above.
  • Figure 5 shows a view of the lock during a mechanical opening.
  • a action on the interior opening control or on the opening control outside causes the lever 48 to rotate.
  • Due to the presence of the end 78 of the finger between the bearing 54 of the lever 48 and the second bearing 44 of the counter-pawl the rotation of the lever 48 causes the rotation of the counter-pawl 36 is the opening of the bolt; the movement of the pawl assembly and the bolt is similar to that described above and is not detailed again.
  • Arrows 104 and 106 are shown in the figure representative of the rotational movement of the pawl assembly 36-38 and of the bolt 32.
  • the locking or unlocking of the lock can be assured of purely software. It is enough to condemn the lock not to release the motor 58, even when the contact of the shim 62 is switched. Unlocking of the lock is carried out by authorizing the triggering of the motor by the contact of the calcd
  • the unlocking signal emitted by circuit 10 is therefore simply transmitted to the main electronics of the door, which authorizes the software unlocking.
  • the unlocking signal transmitted by circuit 10 controls the emergency motor of the lock, to engage the mechanical opening as shown in figure 4.
  • the unlocking mechanism is then formed arm 70, standby motor 74 and finger 76.
  • the motor 74 can be powered by emergency power supply 18, which ensures unlocking even in the event of a main power supply failure of the vehicle.
  • Figure 6 shows another example of a lock that can be used in the Figure 1.
  • This lock is similar to that of Figures 2 to 5; however, instead of provide a single clutch for the exterior opening controls and interior, a mechanical connection is used for the interior opening control and an electrical connection for the exterior opening control.
  • Figure 6 shows a schematic view of the lock in a closed and super-locked position.
  • the elements of the lock which are similar to those of FIG. 2 carry the same references and are not described again. We therefore recognize the bolt 32, the lever 48, the inner opening cable or rod 52, the ratchet 36, the ratchet 38, the electric opening motor 58 with its drive arm 112, the arm 70, the engine 74, the clutch finger 76 and the guide member 80.
  • the lock of Figure 6 does not have opening authorization block with arm and tenon. So the arm drive 112 of the motor 58 relates directly to the first bearing 42 of the counter-pawl 36 when the motor 58 is activated.
  • the shape of the drive arm 112 of motor 58 is slightly different in FIG. 8, compared with FIG. 1, of the absence of the opening authorization hold; more precisely, the arm 112 has a dimension, along its direction of movement, substantially equal to the sum of the dimensions of the arm 60 and the shim 62; this makes it possible not to modify the stroke of motor 58 to ensure opening, that is to say in the example of Figure 6 the same motor as in the lock of Figure 2.
  • the lock has no cable or external opening rod 50.
  • the lever 48 is identical to that of FIGS. 2 to 5, but we understands that we could do without the light and the part used to receive the external opening cable.
  • the mechanical opening of the lock of Figure 6 can be engaged; in this state, an action on the interior opening control causes the opening mechanical lock.
  • the mechanical opening clutch is carried out, as represented in FIG. 4, by lowering the finger 76 using the motor 74.
  • the end 78 of the finger comes between the second bearing 44 of the ratchet 36 and the range 54 of lever 48.
  • the interior opening control when actuated, it causes the cable 48 to rotate the lever 48 around the axis 40.
  • the rotation of the lever 48 is transmitted to the ratchet 36 at through the end 78 of the finger 76.
  • the rotation of the ratchet 36 and the ratchet 38 allows the bolt 32 to rotate, similar to what is shown in FIG. 5.
  • the lock in the figure works as follows.
  • the opening of the lock from the exterior opening control is electric and is effected by triggering of the motor 58, so that the drive arm 112 causes the rotation of the ratchet 36.
  • No cable or rod is provided towards the lever.
  • the condemnation and unlocking of the lock are purely software operations, which do not involve any element mechanical.
  • the risk of self-opening is not managed as in the example of Figures 2 to 5 by a clutch and disengageable electric opening.
  • Opening the lock from the interior opening control is a mechanical opening.
  • the finger 76 In the condemned, super-condemned or child safety state, the finger 76 is in the raised position of FIG. 6; an action on the command internal opening moves the lever 48, but has no effect on the pawl and the against pawl.
  • finger 76 When the lock is unlocked, in the absence of child safety, finger 76 is in the low position. The actuation of the opening command inner 76 acts on the ratchet and the ratchet to cause the opening of the lock.
  • the lock is therefore a lock with an external opening purely electric, with purely mechanical internal opening, with links mechanical disengageable for super-locking or for child safety.
  • the lock in FIG. 6 makes it possible to reduce the diversity problem and limiting the need for backup power in the door.
  • the lock of FIG. 6 also makes it possible to simplify the structure of the doors, insofar as it does not imply mechanical links between the order external opening and the lock. We could also use other sensors that the outside opening control sensor described in the example fully exterior opening control.
  • the unlocking signal transmitted by the object interrogation circuit therefore causes a software unlocking of the electric opening of the lock. This cannot for example be triggered when the user approaches the vehicle or manipulates the exterior opening control.
  • the unlocking signal still causes the mechanical opening clutch the lock from the interior opening control; in other words, the unlocking mechanism formed by the motor 74, the arm 70 and the finger 76 is actuated to allow mechanical opening of the lock from the control interior opening.
  • the lock in Figure 6 allows reduce the diversity problem and limit the need for food from help in the door. It also simplifies the structure of the doors, in since it does not imply mechanical links between the opening command outside and the lock. We could also use other sensors than the sensor of the external opening command described in the example, do without fully exterior opening control.
  • the unlock signal may not cause unlocking of mechanical opening from the interior opening control; this ensures that door in the "child safety" state remains in this state even when the circuit interrogation emits a unlocking signal.
  • the finger 76 is between the ranges 44 and 54 in the rest position. This avoids having to plan in the door an emergency power supply for the motor 74. Indeed, if the finger 76 in the position rest is in the high position, it is preferable to have in the vehicle door a emergency power supply - battery, capacity or other - likely to allow, in in the event of an accident, a clutch of mechanical links. Conversely, if finger 76 is is at rest in the low position, it is possible to super-lock the lock or provide child safety when the vehicle is started, without planning emergency power; to do this, using the vehicle battery, raise finger 76. If finger 76 is always left in the low position on the door driver - in other words if the door is not locked driver - there is always a door that can be opened from the interior opening control, even in the event of an accident.
  • Another alternative is to provide an electrically assisted opening from the interior opening control.
  • finger 76 when the lock is unlocked, in the absence of a super-conviction or child safety, finger 76 is in the down position.
  • An action on the interior opening control causes the displacement of the lever and triggers the opening by the motor.
  • This solution presents the disadvantages of an assisted mechanical opening, in particular the risks during abrupt actuation of the interior opening control. It also avoids provide emergency power in the door and allows only one motor 74 of very low power to actuate finger 76.
  • the signal unlocking code transmitted by the interrogation circuit authorizes tripping of the motor 58 during an action on the interior opening control, but also causes the finger 76 to descend.
  • a backup power supply can be provided, such as indicated above; this emergency power supply can power the circuit interrogation of the vehicle and / or the clutch of the mechanical opening of the lock.
  • this emergency power supply can power the circuit interrogation of the vehicle and / or the clutch of the mechanical opening of the lock.
  • the mechanical opening clutch In the presence of such an emergency power supply, it is possible, in the event of failure of the vehicle battery, trigger the mechanical opening clutch and allow thus the mechanical opening of the lock, either through the opening control exterior and interior opening control (in the example of FIGS. 2 to 5), or through the interior opening control (in the example in Figure 6).
  • the energy required remains in all cases fairly low, insofar as it is not than engaging the mechanical opening and not actually opening the lock. Yes thus allowing the clutching of the mechanical links from the emergency power supply, sensors can be used on the interior opening control or on the external opening command to wake up the circuit electronics or the electronics associated with the lock, in the event of failure of the main vehicle battery.
  • Such emergency electronics are connected to the battery main vehicle, or at the very least receives a signal representative of powered by the vehicle's main battery.
  • the electronics of backup is powered by the backup power and is able to scan the status of sensors on the interior opening control or on the opening control or receive signals representative of the state of these sensors.
  • Backup electronics are inactive as long as the vehicle battery provides food. If the vehicle battery stops supplying voltage, the emergency electronics are awakened by signals from the sensors. It can then engage the mechanical opening. The awakening of the electronics of backup by the sensor signals ensures that the backup electronics, in the normal conditions of use, does not consume power from emergency power.
  • Emergency electronics can be implemented on a circuit printed with otherwise emergency power. Emergency electronics then includes a logic circuit capable of analyzing the signals received from the sensors, a switch capable of supplying the clutch to the mechanical opening from emergency power.
  • the invention is described in its application to the unlocking a door; it more generally applies to any opening of the vehicle - including the opening of the trunk.
  • the simplest case has been described in which the interrogation circuit provides an unlock signal to the lock of a opening the vehicle. It is also possible that the interrogation circuit provides a unlocking signal to more than one lock, for example to all locks in the vehicle in normal operation.

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Lock And Its Accessories (AREA)
EP20030290301 2002-02-12 2003-02-06 Entriegelungssystem einer Kraftfahrzeugöffnung Expired - Lifetime EP1335330B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0201698A FR2835866B1 (fr) 2002-02-12 2002-02-12 Systeme de decondamnation d'ouvrant de vehicule automobile
FR0201698 2002-02-12

Publications (3)

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EP1335330A2 true EP1335330A2 (de) 2003-08-13
EP1335330A3 EP1335330A3 (de) 2004-02-04
EP1335330B1 EP1335330B1 (de) 2006-04-26

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EP (1) EP1335330B1 (de)
JP (1) JP2003262054A (de)
DE (1) DE60304751T2 (de)
FR (1) FR2835866B1 (de)

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Also Published As

Publication number Publication date
DE60304751D1 (de) 2006-06-01
FR2835866B1 (fr) 2004-08-20
EP1335330B1 (de) 2006-04-26
US7224259B2 (en) 2007-05-29
EP1335330A3 (de) 2004-02-04
DE60304751T2 (de) 2007-05-03
JP2003262054A (ja) 2003-09-19
US20030155779A1 (en) 2003-08-21
FR2835866A1 (fr) 2003-08-15

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