WO2002092403A1

WO2002092403A1 - Keyless authorisation verification device for starting a motor

Info

Publication number: WO2002092403A1
Application number: PCT/EP2002/005154
Authority: WO
Inventors: Thomas Ketzer; Andreas Seidel; Benno Wessendorf
Original assignee: Leopold Kostal Gmbh & Co. Kg
Priority date: 2001-05-15
Filing date: 2002-05-10
Publication date: 2002-11-21
Also published as: DE10123700A1; EP1387784A1

Abstract

The invention relates to a keyless authorisation verification device for starting a motor for motor vehicles. Said device comprises a transceiver, which is allocated to the vehicle and contains an evaluation unit for carrying out a query/reply dialogue that requests driving authorisation, a mobile identification generator and a starter unit (1) for manually starting and stopping the motor and also for mechanically unlocking and locking the rotational movement of the steering wheel. Said device is characterised in that the starter unit (1) comprises a transceiver coil (15), which is connected to the transceiver for carrying out a local authorisation request, in addition to a receptacle (5) for receiving an emergency key containing a transponder. This allows a driving authorisation request to be carried out between the transceiver coil (15) and the transponder of the emergency key, when the latter is introduced into the receptacle (5) of the starter unit.

Description

Keyless engine authorization control device for motor vehicles

The invention relates to a keyless engine start authorization control device for motor vehicles with a transceiver device assigned to the motor vehicle, comprising an evaluation unit for carrying out a question and answer dialog requesting the driver authorization, with a mobile identification transmitter and with a start unit for manually starting and stopping the Motor and to effect a mechanical unlocking and locking of the rotary movement of the steering wheel.

Keyless engine start authorization control devices are known and are used in motor vehicles to increase the operational security and the ease of use. Such an engine start authorization control device comprises a transceiver device arranged on the motor vehicle for carrying out a communication between the transceiver device and the ID transmitter requesting the authorization of an identification transmitter (ID transmitter) carried by a user. Communication takes place on a radio link. If it is recognized on the system side that there is an authorized ID transmitter inside the motor vehicle, an actuating device is released, with which the steering wheel is then mechanically unlocked and the desired engine start is triggered.

Part of such an engine start authorization control device is a starting unit for starting and stopping the engine and for effecting a mechanical unlocking and locking of the rotary movement of the steering wheel. Such a starting device, referred to as an ignition starter switch, in the context of such a keyless engine start authorization control device is known from DE 299 02 770 U1. The starting unit of the engine start authorization control device known from this document is permanently installed in the motor vehicle and comprises an actuator which is designed as a push-turn knob in order to bring about an engine start and an unlocking of the steering wheel. The rotary pushbutton comprises a button for triggering the dialog requesting the driving authorization between the motor vehicle transceiver and the mobile identification transmitter. With the one known from this document Engine start authorization control device can be carried out in a simple and very functional manner a driving authorization query, starting the engine and unlocking the steering spindle with a valid identification transmitter present in the motor vehicle interior. However, actuation of the rotary pushbutton to start the engine and to unlock the steering spindle is not possible as intended, if an authorized identification transmitter is not recognized in the motor vehicle interior. Even if this is fundamentally intended, situations can occur in which it is nevertheless desirable to unlock the starting unit or start the engine and / or unlock the steering spindle. This is the case, for example, if the pushbutton on the pushbutton does not trigger a driving authorization query on the part of the motor vehicle transceiver, for example due to contact difficulties or other defects, or if, for example, the mobile identification transmitter has been lost. In these cases it is not possible to move the motor vehicle.

Starting from this discussed prior art, the invention is therefore based on the object of developing a generic keyless engine authorization control device mentioned at the outset in such a way that it is fundamentally possible to move the motor vehicle even in the described emergencies.

This object is achieved in that the starting unit itself has a transceiver coil connected to the transceiver unit for carrying out a short-range authorization query and a receptacle for receiving an emergency key containing a transponder, so that a driving authorization query between the transmitter -Receiving coil and the transponder of the emergency key can be carried out if this is inserted in the receiving unit.

The keyless engine authorization control device according to the invention has a starting unit which is itself equipped with a transmitting / receiving coil for carrying out a driving authorization query. This transmit-receive coil is unlike the others Transmitters and receivers of the transceiver are only designed to carry out a short-range authorization query. The starting unit further comprises a receptacle for receiving an emergency key. The emergency key contains a transponder, so that after inserting the emergency key into the receiving unit, an authorization query can be carried out between the transmitting and receiving coil of the starting unit and the transponder of the emergency key. The reception of the starting unit thus serves to bring the transponder contained in the emergency key into the transmission-reception area of the transmission-reception coil. A mechanical key with a corresponding transponder can in principle be used as the emergency key, which is also used as a key or as an emergency key for opening the doors of the motor vehicle. In principle, a purely electronic key can also serve as an emergency key, which contains the transponder as an essential element. In the latter case, this can be inserted, for example, into a slot in a push-button of a starting unit.

After inserting the emergency key - regardless of the configuration - into the receptacle of the starting unit, the necessary driving authorization query can be carried out between the transmitting and receiving coil and the transponder contained in the emergency key. For this purpose, the transceiver coil of the starting unit is connected to the transceiver device on the motor vehicle side. If the emergency key is recognized as being authorized to drive, the starting unit is unlocked so that the engine can be started and the previously locked rotary movement of the steering wheel can be unlocked mechanically.

The transmitting-receiving coil of the starting unit is expediently arranged concentrically to the axis of rotation of the actuating means, for example the push-button of the starting unit, adjacent to the underside of the handle of the actuator, for example the push-button. If the rotary pushbutton contains a slot for receiving the emergency key, the transponder contained in the emergency key is brought into the immediate vicinity of the transmitting and receiving coil by inserting the emergency key into this slot.

In one embodiment it is provided that the push knob as an actuator of such a starting unit forms a physical unit with a tongue-like actuator. This tongue-like actuator engages through a latch locking device, the latching force of which must be overcome by pressing in the push-button and which basically prevents the push-button from being pulled off. By overcoming a predetermined tensile force, however, the push-button together with its actuator can be pulled out of the starting unit, so that this push-button can then be replaced by a mechanical emergency key containing the transponder. The locking of the starting unit expediently works together with an asymmetrical locking recess of the tongue-like actuator of the push-button. The asymmetrical design of the latching recess is provided in order to counter a certain counterpressure against a pushing-in movement of the push-turn knob, by means of which movement also the execution of the driving authorization check is triggered. The asymmetrical locking recess acts in the other direction to prevent the push button from being pulled out when normal tensile forces are present. When a predetermined tensile force is exceeded, however, the detent is also moved out of the recess, so that the push-button with its tongue-like actuator can then be pulled out of the starting unit to make room for the transponder-containing mechanical emergency key.

In an expedient development, it is provided that the tongue-like actuator is mounted in a rotatable receptacle of the starting unit, the desired actions for starting or stopping the engine and for unlocking being carried out after the rotary knob has been exerted on the receptacle and rotated therewith the steering spindle. A locking device with a locking bolt acts on the receptacle in such a way that after the receptacle has been moved out of its starting position to start the engine, a return of the receptacle to the starting position is fundamentally prevented. The locking device can be actuated to unlock the return movement of the receptacle, unlocking takes place when a control command that is independent of actuation of the receptacle is present, for example when the system side of an automatic vehicle it has been determined that the gear selector lever is in the park position. So that in the case of system errors, in which an unlocking of the restoring movement of the receptacle is no longer possible, such as to effect a steering spindle lock, the receptacle has a stop that can be overcome with a predetermined force, against which the locking bolt of the locking device after actuation the receptacle to start the engine and to lock the reset in its original position. By applying a force exceeding the normal to the rotary pushbutton, it can be brought into its starting position by overcoming the stop, so that a steering spindle lock can take place. Such a measure is particularly expedient if such a push-button has been removed from the starting device in order to make room for a mechanical emergency key with a transponder. Even in such a situation, an intended locking of the steering spindle is possible with such a starting unit.

The invention is described below using an exemplary embodiment with reference to the accompanying figures. Show it:

1: A three-dimensional view of a starting unit for a keyless engine start authorization control device of a motor vehicle,

2: A three-dimensional representation of the recording of the starting unit with an actuator of a push-turn knob located therein,

3: A three-dimensional representation of a stop cam assigned to the receptacle with a locking device and

4: A schematic sectional illustration through the stop arrangement of FIG. 3.

A starting unit 1 of a keyless engine start authorization control device designed as a manually actuable ignition starter switch Motor vehicle comprises a push-button 3 which is movably mounted in a housing 2. The push-button 3 serves to actuate the starting unit 1 in order to be able to trigger a driving authorization query with it, and to start the engine and unlock the steering spindle as well as an engine stop and a new one To be able to effect steering spindle locking.

For this purpose, the rotary pushbutton 3 forms an objective unit with a tongue-like actuator 4 (cf. FIG. 2), which is inserted into a receptacle of the starting unit 1, which is rotatably mounted in the housing 2 and is identified overall by the reference number 5. figure

2 shows the position of the push knob 3 or its actuator 4 in its depressed position. By pressing the push button

3 with its actuator 4 in the receptacle 5 also triggers a driving authorization query on the part of a motor vehicle-side transceiver and a mobile identification transmitter. For this purpose, the starting unit 1 has a stationary Hall sensor 6 and the receptacle has a permanent magnet 7. The permanent magnet 7 is fastened to a holder 8 which is moved by a slide 9 in the axial direction of the receptacle 5 against the force of a compression spring 10 is movable. The front end face 11 of the tongue-shaped adjusting element 4 of the push-button 3 acts against the slide 9. The slide 9 has a pin 12 which, in the position shown in FIG. 2, bears against the end face 11 of the actuator 4, so that this causes it Arrangement of the slide 9 can be moved longitudinally axially.

The receptacle 5 has a catch tumbler 13 which interacts with a catch recess 14 of the actuator 4. In the zero position of the rotary pushbutton 3, ie before it has been moved longitudinally axially by being pushed in, the catch tumbler 13 engages with its upper bar in the catch recess 14. The latching recess 14 is asymmetrical, the flank of the latching recess facing the push-button being designed to be inclined to the push-button 3. To cause the push-button 3 to be pressed in, the resistance provided by the spring-loaded latch lock 13 and the inclined flank must first be overcome before the push-button 3 can be brought into the position pressed in in FIG. 2 with its actuator 4. The other flank of the recess 14 is approximately at right angles or only slightly inclined away from the rotary pushbutton 3 educated. This rear flank of the catch recess 14 thus represents an effective resistance so that the push-button 3 with its actuator 4 cannot be pulled out of the receptacle 5. In the event, however, that the rotary pushbutton 3 with its actuator 4 is to be pulled out of the receptacle 5, this is not fundamentally prevented by the engagement of the upper bar of the latch locking device 13 in the latching recess 14. Rather, the push knob 3 together with its actuator 4 can also be pulled out of the receptacle 5 by applying a corresponding tensile force.

Such pulling out of the push knob 3 with its actuator

4 from the receptacle 5 is desired if, for example, due to system malfunctions when the push-button 3 is pressed in, the driving authorization query is not carried out or if the mobile identification transmitter has been lost. In this case, an emergency key equipped with a transponder is then inserted into the receptacle 5. In the illustrated embodiment, a mechanical key serves as an emergency key, which can also be used to open the doors. Such a key is usually longer than the longitudinal extent of the actuator 4. Since in the illustrated embodiment such an emergency key carries two inner track millings, it can be inserted into the receptacle 5, the pin 12 of the slider 9 engaging in an inner track milling, so that the Key can be inserted to the rear end of the receptacle 5.

In order to carry out a driving authorization query with the emergency key, the starting unit - as shown in FIG. 1 - is assigned a transmission-reception coil 15, via which the driving authorization query is carried out and which communicates with the transponder contained in the emergency key. The transceiver coil has only a very small transceiver area, for example a few centimeters, so that a proper authorization request can only be made if the transponder of the emergency key is correspondingly in the receptacle

5 of the starting unit 1 is positioned. The transceiver coil is connected to the transceiver device on the motor vehicle, via which the driver authorization query with the transponder in the emergency key is ultimately carried out. The receptacle 5 is rotatably mounted in the starting unit 1. Part of the receptacle 5, or forming an objective unit with it, is a stop cam 16, which is connected in a manner not shown in a rotationally fixed manner to the receptacle 5 of the starting unit 1 (cf. FIGS. 3 and 4). The stop cam 16 is used to lock the actuator of the starting unit 1 designed as a receptacle 5, so that after a first actuation of the actuator to start the engine, a return to its initial position is prevented. For this purpose, a locking device 17 acts together with the stop cam 16, which is designed as an electromagnet in the illustrated embodiment. The locking device 17 has a locking bolt 18, which cooperates passively with the stop cam 16 to lock the described return movement. When the locking device 17 is actuated, the locking bolt 18 is retracted so that the actuator of the starting unit 1 can be returned to its starting position and the key can then be removed, to which withdrawal movement the locking of a steering wheel lock is also coupled. The stop cam 16 carries a slotted leaf spring 19 with a stop side 20 which forms the stop for the locking bolt 18 of the locking device 17. The leaf spring 19 spans a control flank 21 of the stop cam 16. The control flank 21 is designed as a rounded edge in the exemplary embodiment.

The clear width of the slot of the leaf spring 19 is less than the diameter of the locking bolt 3, so that the leaf spring 19 basically provides a stop for the locking bolt 18 of the locking device 17, as can be seen from the locking situation in FIGS. 3 and 4 is recognizable. When a torque exceeding a normal actuation of the key inserted into the receptacle 5 is applied, this can be moved with its stop cam 16 past the locking bolt 18 of the locking device 17. When such a torque is applied, the two parts of the leaf spring 19 are moved apart, so that the slot width increases and the locking bolt 18 can pass through these parts of the leaf spring 19 pressed apart. During this process, the locking bar 18 comes into contact with the control flank 21 of the stop cam 16, so that the passive locking bar 18 of the locking device 17, which is under spring tension, is moved in the direction of the electromagnet. The locking bar 18 snaps out chender rotational movement of the stop cam 16 in a turnstile 22 of the stop cam 16, which position represents the starting position of the recording. This sequence of movements can also be seen in the schematic cross section of FIG. 2.

For improved interaction between the locking bar 18 and the leaf spring 19, the locking bar 18 is rounded. Penetration of the locking bolt 3 into the slot of the leaf spring 19 is thereby facilitated.

The locking bolt 18 is moved out of the turnstile 22 by the electromagnet of the locking device 17 when the key inserted in the receptacle 5 has been recognized as authorized. This takes place in the context of directional communication with the motor vehicle-side transceiver via the transceiver coil 15 and a transponder contained in the key.

LIST OF REFERENCE NUMBERS

start unit

casing

Pressure knob

actuator

admission

Hall sensor

permanent magnet

holder

pusher

compression spring

front

spigot

Rastenzuhaltung

recess

Transmit-receive coil

stop cam

locking device

safety catch

leaf spring

stop side

control flank

turnstile

Claims

claims

1. Keyless engine start authorization control device for motor vehicles with a transmission assigned to the motor vehicle.

Receiving device, comprising an evaluation unit for carrying out a question-answer dialog requesting the driving authorization, with a mobile identification transmitter and with a starting unit (1) for manually starting and stopping the engine and for effecting a mechanical unlocking and locking of the rotary movement of the steering wheel, characterized in that the starting unit (1) itself has a transceiver coil (15) connected to the transceiver unit for carrying out a short-range authorization query and a receptacle (5) for receiving an emergency key containing a transponder , so that a driving authorization query can be carried out between the transceiver coil (15) and the transponder of the emergency key when it is inserted into the receptacle (5) of the starting unit.

Control device according to claim 1, characterized in that the starting unit has a push-turn knob (3) for starting and stopping the motor and for effecting a mechanical unlocking and locking of the rotary movement of the steering wheel.

3. Control device according to claim 2, characterized in that the transmission-reception coil (15) of the starting unit (1) is arranged concentrically to the axis of rotation of the push-button (3) and adjacent to the underside of the push-button (3).

4. Control device according to claim 2 or 3, characterized in that the rotary pushbutton has a slot in which the emergency key can be used.

5. Control device according to claim 2 or 3, characterized in that the push-turn knob (3) forms a physical unit with a tongue-shaped actuator (4) which engages through a detent locking device (13), the detent force for the Pressing the push button (3) must be overcome and which basically prevents the push button (3) from being pulled off.

6. Control device according to claim 5, characterized in that the locking tumbler (13) cooperates with an asymmetrical locking recess (14) of the actuator (4).

7. Control device according to one of claims 1 to 6, characterized in that the starting unit (1) is associated with an electrical switching means (6, 7) for triggering the driving authorization query by the transceiver.

8. Control device according to claim 7, characterized in that the electrical switching means is a contactless, magnetic principle switching means with at least one fixed Hall sensor (6) and one by the pushing-in of the rotary knob (3) relative to the Hall sensor (6) movable magnet (7).

9. Control device according to claim 8 in its back reference to one of claims 5 to 6, characterized in that the at least one magnet (7) is movable by a slide (9) on which the actuator (4) of the push-knob (3rd ) acts when the same is pressed in, the movement of the slide (9) carrying the at least one magnet (7) being carried out by a pin (12).

10. Control device according to one of claims 1 to 9, characterized in that on the receptacle (5) after a movement required for starting the engine from its starting position, a locking bolt (18) of a controllable locking device (17) for locking a reset of the receptacle (5) acts in its initial position in such a way that an unlocking to release a return of the receptacle (5) to its initial position takes place from the presence of a control command that is independent of actuation of the receptacle (5), the locking device (17) with the locking bolt ( 18) against an impact of the receptacle (5) and the receptacle (5) has a stop that can be overcome with a predetermined force, against which the locking bolt (18) of the locking device (17) after a movement of the receptacle (5) required to start the engine to lock the Resetting the receptacle (5) into its starting position acts.

11. Control device according to claim 10, characterized in that the receptacle (5) is initially movable from its starting position in the direction of its longitudinal axis and then rotatable about its longitudinal axis and that the stop of the receptacle (5) by a stop cam (16) is formed with a control flank (21) for moving back the locking bolt (18) of the locking device (17) and is provided with a spring element (19) forming the overcome stop.

12. Control device according to claim 1 1, characterized in that the spring element is a leaf spring (21).

13. Control device according to claim 12, characterized in that the leaf spring (21) is slotted, the slot width being less than the diameter of the locking bolt (18) of the locking device (17), so that the locking bolt (18) after overcoming the spring force the leaf spring (21) can pass between the two leaf spring halves.