EP4544135A1 - Kraftfahrzeug-schliesseinrichtung - Google Patents
Kraftfahrzeug-schliesseinrichtungInfo
- Publication number
- EP4544135A1 EP4544135A1 EP23729940.9A EP23729940A EP4544135A1 EP 4544135 A1 EP4544135 A1 EP 4544135A1 EP 23729940 A EP23729940 A EP 23729940A EP 4544135 A1 EP4544135 A1 EP 4544135A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- emergency opening
- motor vehicle
- control unit
- integrated circuit
- sensor
- 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
- E05B81/02—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
-
- 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
- E05B81/34—Details of the actuator transmission of geared transmissions
-
- 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
Definitions
- the invention relates to a motor vehicle locking device, in particular a motor vehicle lock and preferably 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 opening the locking mechanism, and with an emergency opening device for manual and/or motorized Emergency opening of the locking mechanism, the emergency opening device being equipped with at least one electronic control unit for evaluating at least one emergency opening signal.
- motor vehicle locking devices and in particular motor vehicle locks usually have a so-called servo opening.
- This is implemented using an electric motor drive, which ensures that the lock is opened.
- the electric motor drive works directly or indirectly on the pawl as part of the locking mechanism and removes it from its latching engagement with the rotary latch.
- the rotary latch can open with spring support and release a previously caught locking bolt.
- the actuating element interacts directly with a lever of the operating lever chain.
- the actuating element is arranged in the area of an external operating lever as part of an external operating lever chain.
- the signals from the crash sensor are evaluated using a control unit, which in turn is powered by the vehicle electrical system voltage.
- a control unit which in turn is powered by the vehicle electrical system voltage.
- the known control unit is integrated into the entire control architecture of the associated motor vehicle. This means that any software errors, indifferent functional states, etc. can i. V. a low on-board electrical system voltage can lead to the emergency opening failing, even though such an opening would be possible in principle. This is particularly unacceptable in the event of a crash or in the event of a failure or if the on-board electrical system voltage is too low, especially since this also reduces overall comfort.
- the invention aims to provide a remedy here.
- the invention is based on the technical problem of further developing such a motor vehicle locking device in such a way that a particularly functional and as self-sufficient operation of the emergency opening device is provided.
- the invention proposes in a generic motor vehicle locking device that the control unit of the emergency opening device is designed as an application-specific integrated circuit (ASIC).
- ASIC application-specific integrated circuit
- the invention relies on a specific control unit for the emergency opening device, namely an application-specific integrated circuit.
- This is an integrated circuit whose function can no longer be changed after production. This means that subsequent reprogramming or reprogramming is expressly not possible.
- the application-specific integrated circuit in question is manufactured according to customer requirements and delivered in this form.
- the customer requirements can, for example, be requirements such as which additional signals to be evaluated by the application-specific integrated circuit are used for the emergency opening, which possible signal thresholds must be taken into account, etc.
- the application-specific integrated circuit is equipped with at least one sensor.
- This sensor can be a sensor integrated into the circuit.
- the sensor may be designed as a touch sensor, which consequently initiates the emergency opening.
- other sensors for example a motion sensor, a switch, etc. instead of the touch sensor.
- different response thresholds can be defined for the touch sensor.
- any actuation thresholds for the touch sensor during the emergency opening are predetermined once and for all and cannot (or can no longer) be changed subsequently.
- the application-specific integrated circuit is designed as a control unit of the emergency opening device, so to speak, self-sufficient from the rest of the network structure of the motor vehicle and the software used there as well as an additionally provided further control unit or an additionally implemented motor vehicle-side control unit. Due to this self-sufficient character, the emergency opening device according to the invention is ultimately separated from the rest of the motor vehicle in terms of its functionality.
- the application-specific integrated circuit as the control unit of the emergency opening device can, for example, be supplied with a lower voltage than the vehicle electrical system voltage.
- the application-specific circuit advantageously has its own energy supply.
- This own energy supply can be an energy storage device.
- the energy storage is advantageously designed as a battery, although other energy storage devices such as capacitors, in particular high-performance capacitors, can in principle also be used at this point.
- the functionality of the emergency opening device according to the invention is in particular not affected by the fact that, for example, the electrical system of the associated motor vehicle has too low a voltage or even has no tension.
- the emergency opening device according to the invention is i. Thanks to the application-specific integrated circuit and its own energy supply, it is able to ensure perfect emergency opening even in such a case. This is where the main advantages can be seen.
- At least one control unit on the motor vehicle side is additionally provided.
- the application-specific integrated circuit has at least one sensor, which can be integrated into the circuit.
- a relay is usually provided downstream of the application-specific integrated circuit. The relay can be used to control a motor for emergency opening. This means that a low voltage and low energy from the emergency opening device is sufficient to activate the relay, which in turn switches on the motor for the emergency opening.
- control unit of the emergency opening device in the form of the application-specific integrated circuit used according to the invention can also be connected to the vehicle electrical system as an alternative or in addition to its own energy supply.
- the emergency opening device's own energy supply relies on an energy storage device designed as an accumulator. This accumulator may in turn be charged regularly using the vehicle's on-board electrical system.
- the emergency opening device is equipped with its own energy supply and, at this point, advantageously its own and separate battery, in order to ensure the functionality of the emergency opening device - regardless of the vehicle's on-board electrical system - in any case.
- the senor assigned to the application-specific integrated circuit opens up the possibility of being able to operate, for example, motor vehicle doors without a handle or so-called handle-less doors.
- the emergency opening device may ensure that, for example, a recessed handle is exposed, an additional hook for grabbing the doors becomes visible, etc.
- the application-specific circuit can also be equipped with its own error diagnosis.
- the emergency opening device sends a corresponding signal to the higher-level motor vehicle control unit when an error occurs.
- the signal in question can be a pulsed signal, for example a PWM signal (pulse width modulated signal).
- the motor vehicle control unit can then, for example, issue an error message in a display that the emergency opening device is faulty or itself has an error.
- the emergency opening device is advantageously equipped with a transmitting/receiving unit.
- This transmitter/receiver unit like the sensor, can be embedded in the application-specific integrated circuit or represent a part of it.
- an additional authentication check can be carried out. With the help of this authentication check in the sense of a “key exchange”, it is possible and conceivable for an operator to additionally identify themselves as authorized to the emergency opening device.
- a data exchange occurs between a user-side key and the transmitter/receiver unit in question, which according to the invention is embedded or integrated into the application-specific integrated circuit.
- an authorization check of the key and thus of the operator is carried out. This ensures that only an authorized operator can actually trigger the emergency opening device and ensure the desired emergency opening of the associated motor vehicle door.
- the emergency opening device can basically be designed as a module, i.e. as an independent functional unit, which is assigned to it independently of the associated motor vehicle locking device.
- the modular character of the emergency opening device implemented according to the invention can be emphasized and increased by the fact that the application-specific integrated circuit including sensor and transmitter/receiver unit defines a built-in module as a whole.
- This built-in module can basically do without its own circuit board. In principle, an additional circuit board is also possible.
- the application-specific integrated circuit can usually be combined, including the energy storage and including the optional other elements such as sensor and transmitter/receiver unit, into a module, which, for example, is housed in its own housing or represents a ready-to-install element using an insulating casting compound.
- This own module can be placed directly inside a housing for the motor vehicle locking device but also flanged to the outside of the housing in question. Due to the energy self-sufficient character of the emergency opening device according to the invention and The decoupling from the motor vehicle control unit also ensures a high level of functional reliability. This functional reliability is also maintained over practically the entire life of the vehicle and is given and guaranteed regardless of whether any software updates to the vehicle control unit take place or not. This is where the main advantages can be seen.
- Fig. 1 shows the motor vehicle locking device according to the invention in the form of a motor vehicle lock and in particular a motor vehicle door lock in a schematic overview.
- the motor vehicle locking device has in its basic structure a locking device 1, 2 consisting essentially of a rotary latch 1 and an associated pawl 2.
- the rotary latch 1 is locked in a closed position.
- To open the locking mechanism 1, 2 it is necessary to pivot the pawl 2 about its axis in the indicated clockwise direction according to the exemplary embodiment.
- the rotary latch 1 is released from the pawl 2 and can also open in a clockwise direction with spring support. A previously caught locking bolt 3 is released in this way.
- the associated motor vehicle door can be opened in this way.
- an electric motor drive 4, 5, 6, 7 ensures that the locking mechanism 1, 2 is opened.
- the electric motor drive 4, 5, 6, 7 in turn has an electric motor 4, which causes a screw 5 on the output side to rotate.
- the output-side worm 5 engages in a worm wheel 6 and ensures that the locking mechanism 1, 2 is opened
- Worm wheel 6 according to the exemplary embodiment rotates counterclockwise. As a result of this, a pin 7 connected to the worm wheel 6 can move against the pawl 2 and pivot it in the indicated clockwise direction, so that the locking mechanism 1, 2 then opens as described.
- an emergency opening of the locking mechanism 1, 2 is also possible.
- Such an emergency opening is required and necessary, for example, when a crash sensor 8 generates a corresponding crash signal.
- This crash signal regularly corresponds to accelerations or decelerations of the motor vehicle that exceed several g.
- the emergency opening of the locking mechanism 1, 2 occurs when the electric motor drive 4, 5, 6, 7 has failed or the vehicle electrical system voltage provided to supply the electric motor drive 4, 5, 6, 7 is not sufficient to operate it or is no longer sufficiently available.
- an emergency opening device 9, 10, 11, 12, 13, 14 is implemented at this point.
- the emergency opening device 9, 10, 11, 12, 13, 14 is capable of manual and/or motorized emergency opening of the locking mechanism 1, 2. This will be explained in more detail below.
- the emergency opening device 9, 10, 11, 12, 13, 14 first and foremost has an electronic control unit 14, with the help of which at least one emergency opening signal is or can be evaluated.
- the emergency opening signal can be a signal from the previously mentioned crash sensor 8, which is connected to the control unit 14 in question for this purpose.
- the emergency opening signal for the control unit 14 comes from a sensor 12, which is acted upon by an operator in order to initiate emergency opening.
- the sensor 12 is a sensor 12 integrated into the electronic circuit or the electronic control unit 14.
- the sensor 12 is designed as a touch sensor 12 according to the exemplary embodiment.
- the sensor 12 can also be any other sensor, for example a switch or the like.
- control unit 14 is designed as a component of the emergency opening device 9, 10, 11, 12, 13, 14 as an application-specific integrated circuit or AS IC.
- all functions of the control unit 14 are defined by the manufacturer and can then expressly not be changed (any longer) after production and installation, for example in the sense of a software update. This has already been explained in the introduction.
- the application-specific integrated circuit or the control unit 14 according to the invention of the emergency opening device 9, 10, 11, 12, 13, 14 has its own energy supply.
- the own energy supply is designed as an energy storage device 11.
- the energy storage 11 is an integrated battery 11.
- This battery 11 can be designed as an accumulator and can be charged regularly, for example via a connected vehicle electrical system. As a rule, however, it is a non-rechargeable battery, so that the emergency opening device 9, 10, 11, 12, 13, 14 is designed overall as an independent functional unit or module and is therefore attached to or in a housing of an associated motor vehicle locking device can be.
- the basic structure of the emergency opening device 9, 10, 11, 12, 13, 14 not only includes the control unit 14 designed as an application-specific integrated circuit 14.
- the motor 9 can be controlled in order to lift the pawl 2 from its engagement with the rotary latch 3 during the emergency opening.
- the motor 9 may work on a mechanical intermediate member 16, with the help of which the motor 9 is connected to the pawl 2. This can be a Bowden cable.
- the emergency opening device 9, 10, 11, 12, 13, 14 can also be set up for manual emergency opening of the locking mechanism 1, 2.
- the motor 9 is unnecessary.
- the manual emergency opening of the locking mechanism 1, 2 is then accomplished using the emergency opening device 9, 10, 11, 12, 13, 14 in such a way that, following an emergency opening signal registered, for example, by the sensor 12, a mechanical connection is established via the relay 12, for example instead of the Motor 9 realized handle with the pawl 2 with the interposition of the intermediate link 16 is realized. That is, in this case, the emergency opening device 9, 10, 11, 12, 13, 14 ensures that the handle is mechanically connected to the intermediate member 16 and thus to the pawl 2, so that the pawl 2 is released from engagement via the handle can be removed with the rotary latch 3 during the emergency opening.
- a transmitter/receiver unit 13 is then implemented as a further component of the emergency opening device 9, 10, 11, 12, 13.
- the transmitter/receiver unit 13, like the sensor 12 and also the energy storage unit 11, may be integrated into the control unit 14.
- the same also applies to the relay 10.
- An authentication check takes place with the help of the transmitting/receiving unit 13.
- data is exchanged between the transmitting/receiving unit 13 and a key on the operator side and not shown. In the course of this data exchange, the authorization of the key and thus of the operator is checked to ensure that only an authorized operator can carry out the emergency opening of the lock 1, 2.
- control unit 14 or the application-specific integrated circuit 14 is also connected to the motor vehicle control unit 15.
- the data exchange may take place via pulsed signals, for example a PWM signal (pulse width modulated signal).
- PWM pulse width modulated signal
Landscapes
- Lock And Its Accessories (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102022115829.2A DE102022115829A1 (de) | 2022-06-24 | 2022-06-24 | Kraftfahrzeug-Schließeinrichtung |
| PCT/DE2023/100382 WO2023246975A1 (de) | 2022-06-24 | 2023-05-24 | Kraftfahrzeug-schliesseinrichtung |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4544135A1 true EP4544135A1 (de) | 2025-04-30 |
Family
ID=86760393
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP23729940.9A Pending EP4544135A1 (de) | 2022-06-24 | 2023-05-24 | Kraftfahrzeug-schliesseinrichtung |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP4544135A1 (de) |
| CN (1) | CN119452146A (de) |
| DE (1) | DE102022115829A1 (de) |
| WO (1) | WO2023246975A1 (de) |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102006009835A1 (de) * | 2005-03-04 | 2006-09-07 | Marquardt Gmbh | Elektrisches Türschloß |
| DE102006035803A1 (de) * | 2006-08-01 | 2008-02-07 | Marquardt Gmbh | Kraftfahrzeug, insbesondere Schließsystem für ein Kraftfahrzeug |
| KR101233817B1 (ko) | 2012-01-06 | 2013-02-18 | 주식회사 에이 씨 에스 | 자동차 도어락용 스위치 조립체 |
| DE102013004178A1 (de) | 2012-03-16 | 2013-09-19 | Marquardt Gmbh | Schließsystem, insbesondere für ein Kraftfahrzeug |
| KR101307916B1 (ko) | 2012-04-19 | 2013-09-13 | (주)모토닉 | 자동차 도어록 구동장치 및 그의 제어방법 |
| US20140200774A1 (en) * | 2013-01-15 | 2014-07-17 | GM Global Technology Operations LLC | Vehicle door latch system and method |
| DE102017124518A1 (de) | 2017-10-20 | 2019-04-25 | Kiekert Ag | Kraftfahrzeugtürschloss |
-
2022
- 2022-06-24 DE DE102022115829.2A patent/DE102022115829A1/de active Pending
-
2023
- 2023-05-24 EP EP23729940.9A patent/EP4544135A1/de active Pending
- 2023-05-24 WO PCT/DE2023/100382 patent/WO2023246975A1/de not_active Ceased
- 2023-05-24 CN CN202380049245.0A patent/CN119452146A/zh active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| DE102022115829A1 (de) | 2024-01-04 |
| WO2023246975A1 (de) | 2023-12-28 |
| CN119452146A (zh) | 2025-02-14 |
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