EP4662381A1 - Kraftfahrzeug-schloss insbesondere kraftfahrzeug-türschloss - Google Patents
Kraftfahrzeug-schloss insbesondere kraftfahrzeug-türschlossInfo
- Publication number
- EP4662381A1 EP4662381A1 EP24702216.3A EP24702216A EP4662381A1 EP 4662381 A1 EP4662381 A1 EP 4662381A1 EP 24702216 A EP24702216 A EP 24702216A EP 4662381 A1 EP4662381 A1 EP 4662381A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- motor vehicle
- electric motor
- drive
- sensor
- vehicle lock
- 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.)
- Pending
Links
Classifications
-
- 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
-
- 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
- E05B81/16—Power-actuated vehicle locks characterised by the function or purpose of the powered actuators operating on locking elements for locking or unlocking action
-
- 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
- E05B47/00—Operating or controlling locks or other fastening devices by electric or magnetic means
- E05B2047/0097—Operating or controlling locks or other fastening devices by electric or magnetic means including means for monitoring voltage, e.g. for indicating low battery state
-
- 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
- E05B81/24—Power-actuated vehicle locks characterised by constructional features of the actuator or the power transmission
- E05B81/32—Details of the actuator transmission
- E05B81/42—Cams
-
- 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
- E05B81/56—Control of actuators
- E05B81/62—Control of actuators for opening or closing of a circuit depending on electrical parameters, e.g. increase of motor current
-
- 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
- E05B81/64—Monitoring or sensing, e.g. by using switches or sensors
- E05B81/72—Monitoring or sensing, e.g. by using switches or sensors the lock status, i.e. locked or unlocked condition
- E05B81/74—Monitoring or sensing, e.g. by using switches or sensors the lock status, i.e. locked or unlocked condition by sensing the state of the actuator
Definitions
- Motor vehicle lock especially motor vehicle door lock
- the invention relates to a motor vehicle lock, in particular a motor vehicle door lock, with a locking mechanism consisting essentially of a rotary latch and a pawl, furthermore with an electric motor drive for the locking mechanism, and with an emergency actuating element for manually opening the locking mechanism, for example in the event of a failure of the electric motor drive.
- Motor vehicle locks and in particular motor vehicle door locks are increasingly being equipped with an electric motor drive for the locking mechanism for reasons of comfort and better acoustics.
- a control unit ensures that after a sensor signal is registered, the electric motor drive is activated in order to lift the pawl from its engagement with the rotary latch.
- the rotary latch opens with spring support and releases a previously trapped locking bolt and thus also the associated motor vehicle door.
- the sensor signal to start the described electrical opening process can, for example, come from a switch on an outside door handle.
- an electric motor opening process therefore requires only minimal operating forces or even no operating forces at all and is therefore favored in practice.
- the electrical opening process is particularly quiet.
- the proper functioning of the electric motor drive for the locking mechanism requires that sufficient voltage and general electrical energy is available from the on-board battery of the associated motor vehicle.
- problems can arise here in that the battery in question is discharged or, for example, damaged as a result of an accident to such an extent that the required on-board voltage is no longer available.
- electrical backup solutions for such electric locks that use their own additional energy source for emergency operation.
- an emergency operating element is typically provided for manually opening the locking mechanism, for example in the event of a failure of the electric motor drive.
- the generic state of the art according to DE 10 2018 104 421 A1 proposes an emergency actuation element which is mechanically coupled to the associated motor vehicle door lock via a connecting means.
- an actuator is provided which interacts mechanically with the connecting means, which blocks the connecting means in normal operation and releases it in emergency operation.
- the actuator can be moved by an electric motor.
- the electric motor drive implemented at this point is only intended and implemented indirectly for the locking mechanism.
- the further state of the art according to DE 10 2015 122 121 A1 deals with a method for manually opening a motor vehicle door and in particular for emergency opening.
- the vehicle speed is evaluated and at least one speed threshold is set using a control unit.
- the control unit is queried and controls a functional unit depending on the speed to unlock/open the vehicle door.
- the last state of the art to be taken into account according to DE 10 2019 126 596 A1 relates to a motor vehicle lock which is equipped with an electric motor drive for the locking mechanism.
- the electric motor drive can actuate a safety lever to take up its unlocked position.
- a stop is provided for the electric motor drive, which limits the movement of the electric motor drive at least when it is actuated in the opening direction to cancel the unlocked position. This prevents the locking mechanism from opening.
- the state of the art has generally proven itself when it comes to taking any emergency measures following, for example, a failure of the electric motor drive for opening the locking mechanism.
- the state of the art can be improved in that the perfect actuation of the emergency actuation element or its activation/deactivation has not always been possible without a doubt.
- the typical procedure is that the motor vehicle lock in question generally assumes its locked position. This also applies to the emergency actuation element. Only if the electric motor drive fails should the emergency actuation element be transferred to its unlocked state for manual opening of the locking mechanism. This has not been possible so far, or not with the required functional reliability. The invention aims to remedy this situation.
- the invention is based on the realization that the electric motor drive can not only be used for the electrical opening of the locking mechanism.
- the electric motor drive can also be used as a second function in emergency operation, which is to ensure that the emergency operating element is unlocked via the deflection contour.
- the emergency operating element - like the rest of the motor vehicle lock - is typically "locked” in its functional position in the normal state.
- any actuation of an outside door handle or an inside door handle or both usually has no effect on the associated motor vehicle door, which is expressly desired and is even required in many countries while the motor vehicle is in motion.
- the electric motor drive ensures that the emergency actuation element is unlocked via its deflection contour.
- an operator can then easily open the locking mechanism mechanically and manually via the emergency actuation element or an emergency actuation lever chain implemented at this point and thus also unlocked.
- the electric motor drive usually works on a clutch lever via the deflection contour and transfers this from its "disengaged" position assumed in normal operation to the "engaged” position.
- the coupling element is in the disengaged position
- the emergency operating lever chain mentioned above is mechanically interrupted with the emergency operating element.
- the "engaged" position of the coupling element corresponds to the emergency operating lever chain being mechanically closed.
- the invention achieves this by using the deflection contour to move the coupling element from its routinely assumed disengaged position to the engaged position.
- the vehicle lock is mechanically locked throughout during normal operation.
- the electric motor drive In order to realize and implement the unlocking of the emergency operating element, the electric motor drive must be controlled in such a way that a kind of "parking position" is reached. This is done in such a way that in this parking position the deflection contour moves the coupling element as part of the emergency operating lever chain from its disengaged to the engaged position. This typically happens when the electric motor drive fails or threatens to fail. This can happen in the event of a crash or when the battery voltage of a vehicle battery falls below a certain limit. The same may apply to an emergency power source.
- the invention proceeds in such a way that if the vehicle electrical system voltage or the voltage of the emergency power source drops, the electric motor drive is at least controlled to the extent that it assumes its previously mentioned "parking position".
- the emergency operating lever chain is now closed or unlocked and a manual actuation of the emergency operating element means that the locking mechanism can be opened mechanically and manually.
- the mechanical Emergency operation is activated and the coupling element is unlocked so that the associated vehicle door can be opened from the inside using an interior door handle, for example. Of course, opening from the outside is also possible.
- a further advantageous embodiment is such that the deflection contour for the coupling element in the example case covers a defined area of an actuating path of the electric motor drive.
- the actuating path of the electric motor drive corresponds at least to the fact that the locking mechanism can be opened with its help by lifting the pawl from its engagement with the rotary latch.
- the actuating path also includes the defined area in question, in which the deflection contour ensures that the emergency actuating element is active or the coupling element is unlocked and consequently the emergency actuating lever chain is mechanically closed.
- an electrical control signal from the electric motor drive and/or signals from a sensor are evaluated.
- the electrical control signal from the electric motor drive is examined with regard to a possible increase in current when the deflection contour is reached.
- the invention is based on the knowledge that moving to the previously mentioned “parking position” is accompanied by increased mechanical resistance. This is because moving to the “parking position” requires that the coupling element is transferred from its previously and routinely assumed disengaged position to the engaged position via the deflection contour. This involves a certain amount of force, which manifests itself in a current increase in the electrical control signal of the electromotive drive.
- This current increase can be a control unit that controls the electric motor drive, in such a way that the increase in current identifies when the deflection contour has been reached. After the increase in current has been determined, the electric motor drive is usually switched off. This is because the electric motor drive has now reached the "parking position" mentioned above.
- a drive pulley of the electric motor drive and/or a sensor assigned to the electric motor can also be used.
- the position of the drive pulley can be detected using the sensor to determine whether the "parking position" discussed has been reached or not.
- a sensor assigned to the electric motor can also be evaluated. This can be a rotation angle sensor.
- the invention is based on the knowledge that a certain angle of rotation of the electric motor corresponds to a certain travel of the drive disk, from which it can then be concluded whether the coupling element has been reached by the deflection contour of the electric motor drive or not.
- the sensor provides reliable information about whether the "parking position" has been taken by the electric motor drive or not.
- the sensor signal can also be combined with the evaluated current increase when the deflection contour is reached. This allows the accuracy of taking the "parking position" to be increased even further.
- the drive disc usually has not only a contour for controlling the sensor in question.
- the drive disc is also usually equipped with an actuating cam for the pawl.
- the drive disc and thus the electric motor drive as a whole fulfils its dual functionality within the scope of the invention, namely, on the one hand, to release the pawl from its engagement with the rotary latch to the electromotive opening and, on the other hand, in such a way that the electromotive drive can be used to switch to emergency opening mode.
- the senor mentioned above or the multiple sensors can work in different ways. It is conceivable that the sensor works tactilely or without contact. Consequently, the sensor can be a switch, a Hall sensor or combinations. An optical sensor is also possible.
- a motor vehicle lock and in particular a motor vehicle door lock is provided which always assumes its locked position in normal operation and is only transferred to the unlocked position of an emergency operating lever chain in emergency operation.
- the electric motor drive which according to the invention has a dual function. This is because with the help of the electric motor drive, the locking mechanism can typically be actuated in one direction of rotation for electrical opening, whereas in the other direction of rotation or in the same direction of rotation the emergency operating lever chain in question can be unlocked for manual and mechanical emergency opening of the locking mechanism.
- the electric motor drive is equipped with a deflection contour for usually a coupling element. With the help of the deflection contour, the coupling element is transferred from its previously assumed disengaged position to the engaged position.
- Fig. 1 shows the motor vehicle lock according to the invention schematically in a first embodiment
- Fig. 2 the object according to Fig. 1 in a variant
- Fig. 3 shows a further third embodiment of the invention
- Fig. 4 and 5 show further possible embodiments of the invention.
- the figures show a motor vehicle lock and in particular a motor vehicle door lock.
- this has a locking mechanism 1, 2 consisting essentially of a rotary latch 1 and a pawl 2, both of which are shown and reproduced in Fig. 1.
- the locking mechanism 1, 2 In the functional position according to Fig. 1, the locking mechanism 1, 2 is in its closed state.
- an electric motor drive 3, 4, 5 is provided for the locking mechanism 1, 2.
- the electric motor drive 3, 4, 5 is made up of an electric motor 3, a drive disk 4 meshing with the electric motor 3 and an actuating cam 5 on the drive disk 4 according to the embodiment and not limited to this.
- Rotational movements of the drive disk 4 in a clockwise direction about the associated axis of the drive disk 4 lead to the actuating cam 5 located on an underside of the drive disk 4 according to the embodiment acting on a pin 2a as part of the locking pawl 2, so that the locking pawl 2 pivots about its axis in the clockwise direction indicated in Fig. 1.
- the rotary latch 1 is released from the locking pawl 2 and can in turn pivot open with spring support in the counterclockwise direction also indicated in Fig. 1 and an associated Release the locking bolt.
- a motor vehicle door equipped with the locking bolt can be opened.
- the further basic structure then includes an emergency actuation element 6, 7, which is a component of a manually actuated and purely mechanically acting emergency actuation lever chain 6, 7.
- an emergency actuation element 6, 7, which is a component of a manually actuated and purely mechanically acting emergency actuation lever chain 6, 7.
- the electric motor drive 3, 4, 5 has a deflection contour 4a for the emergency actuation element 6, 7 or for unlocking the emergency actuation element 6, 7.
- the emergency actuation element 6, 7 according to the embodiment is composed of a coupling element 6 on the one hand and a transmission lever 7 on the other.
- the transmission lever 7 interacts with the deflection contour 4a.
- the transmission lever 7 according to the embodiment ensures that the coupling element 6 moves into its “coupled” position indicated in Fig. 1 when the transmission lever 7 is acted upon by means of the deflection contour 4a.
- the "coupled" position of the coupling element 6 indicated in Fig. 1 corresponds to the fact that the emergency operating lever chain 6, 7 is mechanically closed.
- An actuation of the emergency operating lever chain 6, 7 in question by, for example, a handle provided at the end (for example an interior door handle) leads to the pin 2a of the pawl 2 being acted upon again via this emergency operating lever chain 6, 7 or being able to be acted upon in such a way that the pawl 2 - this time manually and mechanically - is lifted from its engagement with the rotary latch 1, so that as a result the locking mechanism 1, 2 opens and releases the locking bolt in question.
- This is possible in particular if there is a failure of the electric motor drive 3, 4, 5 for the reasons already described above.
- the deflection contour 4a is implemented and provided on the drive disk 4 as a component of the electric motor drive 3, 4, 5.
- the deflection contour 4a covers a defined area (angle a) of a travel path of the electric motor drive 3, 4, 5.
- the angle a is approximately 70°.
- the entire travel of the electromotive drive 3, 4, 5 corresponds to a complete rotation of the drive disk 4, i.e. according to the embodiment, to an angle of 360° of the drive disk 4.
- the defined area a is taken up by evaluating an electrical control signal of the electromotive drive, as shown in more detail in the embodiment of Fig. 3, or by evaluating signals from a sensor 7, as already shown by way of example in Fig. 1 and also in the other embodiments.
- the electrical control signals of the electric motor drive 3, 4, 5 are evaluated at this point with regard to a current increase when the deflection contour 4a is reached.
- the deflection contour 4a is equipped with a front and end ramp, each of which merges into a plateau.
- the deflection contour 4a ensures that the transmission lever 7 is increasingly pivoted counterclockwise about its axis when it hits the ramp, as shown in Fig. 1.
- Emergency operating lever chain 6, 7 can be used to open the locking mechanism 1, 2 manually and mechanically, as described.
- the embodiment according to Fig. 3 evaluates the current increase I indicated schematically there as a function of the angle 0 swept by the drive disk 4. This is indicated by the schematic diagram.
- a current increase occurs, namely when the drive disk 4 with the deflection contour 4a moves against the transmission lever 7 and lifts it against mechanical resistance and pivots it in the counterclockwise direction already described in order to finally engage the coupling element 6.
- Fig. 3 where the current increase can initially be identified with a slope at the beginning of the deflection contour 4a and then a plateau area with an increased current increase.
- this increase in current which is schematically indicated in Fig. 3, can be evaluated by a control unit 8 which controls the electric motor drive 3, 4, 5 and is only indicated, so that the electric motor drive 3, 4, 5 can be stopped when the so-called “parking position” shown in Fig. 1 is reached. This is again ensured by the control unit 8 which acts on the electric motor 3.
- the previously mentioned sensor 7 can also be assigned to the drive disk 4 of the electric motor drive 3, 4, 5 and/or the electric motor 3.
- This sensor 7 is acted upon by means of a circumferential contour 9 on the drive disk 4, as is which reproduces Fig. 1 and 2.
- the contour 9 as shown in Fig. 4 can also be a magnet provided on the drive disk 4, which interacts with a sensor 7 designed as a Hall sensor when it overlaps, so that in this way the "parking position" already discussed can be easily determined and identified.
- a sensor 7 is again implemented in the form of a Hall sensor, which reacts to rotary movements of a ring magnet on the output shaft of the electric motor 3 as a stop or contour 9, and then deduces the position of the electric motor 3 and thus of the drive disk 4.
- the senor 7 can work tactilely according to the embodiment, as shown in Fig. 1 and 2.
- a contactless application of the sensor 7 is also possible, as is the case in the embodiment according to Fig. 4 and 5 with the
- Hall sensors are shown pictorially.
Landscapes
- Lock And Its Accessories (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102023102858.8A DE102023102858A1 (de) | 2023-02-07 | 2023-02-07 | Kraftfahrzeug-Schloss insbesondere Kraftfahrzeug-Türschloss |
| PCT/DE2024/100008 WO2024165097A1 (de) | 2023-02-07 | 2024-01-05 | Kraftfahrzeug-schloss insbesondere kraftfahrzeug-türschloss |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4662381A1 true EP4662381A1 (de) | 2025-12-17 |
Family
ID=89767310
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP24702216.3A Pending EP4662381A1 (de) | 2023-02-07 | 2024-01-05 | Kraftfahrzeug-schloss insbesondere kraftfahrzeug-türschloss |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP4662381A1 (de) |
| CN (1) | CN120752407A (de) |
| DE (1) | DE102023102858A1 (de) |
| WO (1) | WO2024165097A1 (de) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102024123883A1 (de) * | 2024-08-21 | 2026-02-26 | Kiekert Aktiengesellschaft | Kraftfahrzeug-Schloss |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10009391A1 (de) * | 2000-02-29 | 2001-09-13 | Bosch Gmbh Robert | Kraftfahrzeug-Türschloss |
| DE102015122121A1 (de) | 2015-12-17 | 2017-06-22 | Kiekert Ag | Verfahren und vorrichtung zur manuellen beaufschlagung einer kraftfahrzeugtür |
| DE102017108754A1 (de) * | 2017-04-25 | 2018-10-25 | Kiekert Ag | Kraftfahrzeugschloss |
| DE102017124520A1 (de) * | 2017-10-20 | 2019-04-25 | Kiekert Ag | Kraftfahrzeugtürschloss |
| DE102017124521A1 (de) * | 2017-10-20 | 2019-04-25 | Kiekert Ag | Kraftfahrzeugtürschloss |
| DE102017124529A1 (de) * | 2017-10-20 | 2019-04-25 | Kiekert Ag | Kraftfahrzeugtürschloss |
| DE102018104421A1 (de) | 2018-02-27 | 2019-08-29 | Kiekert Ag | Betätigungseinrichtung für ein Kraftfahrzeug-Türschloss |
| DE102019112470A1 (de) * | 2019-05-13 | 2020-11-19 | Kiekert Aktiengesellschaft | Kraftfahrzeugtürschloss |
| DE102019126596A1 (de) | 2019-10-02 | 2021-04-08 | Kiekert Aktiengesellschaft | Kraftfahrzeug-Schloss |
| DE102022103113A1 (de) * | 2021-02-22 | 2022-08-25 | Magna Closures Inc. | Verschlussverriegelung mit unfall-freigabemechanismus |
| DE102021127452A1 (de) * | 2021-10-22 | 2023-04-27 | Kiekert Aktiengesellschaft | Kraftfahrzeug-Schloss insbesondere Kraftfahrzeug-Türschloss |
-
2023
- 2023-02-07 DE DE102023102858.8A patent/DE102023102858A1/de active Pending
-
2024
- 2024-01-05 EP EP24702216.3A patent/EP4662381A1/de active Pending
- 2024-01-05 WO PCT/DE2024/100008 patent/WO2024165097A1/de not_active Ceased
- 2024-01-05 CN CN202480017636.9A patent/CN120752407A/zh active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| CN120752407A (zh) | 2025-10-03 |
| WO2024165097A1 (de) | 2024-08-15 |
| DE102023102858A1 (de) | 2024-08-08 |
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