EP3880913B1 - Motor vehicle lock - Google Patents

Motor vehicle lock Download PDF

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Publication number
EP3880913B1
EP3880913B1 EP19804624.5A EP19804624A EP3880913B1 EP 3880913 B1 EP3880913 B1 EP 3880913B1 EP 19804624 A EP19804624 A EP 19804624A EP 3880913 B1 EP3880913 B1 EP 3880913B1
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EP
European Patent Office
Prior art keywords
motor vehicle
spring
rotary latch
leg
stop
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.)
Active
Application number
EP19804624.5A
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German (de)
French (fr)
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EP3880913A1 (en
Inventor
Thorsten Bendel
Christian Sturm
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Kiekert AG
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Kiekert AG
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Publication of EP3880913A1 publication Critical patent/EP3880913A1/en
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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
    • E05B81/54—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
    • E05B15/00—Other details of locks; Parts for engagement by bolts of fastening devices
    • E05B15/04—Spring arrangements in locks
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B15/00—Other details of locks; Parts for engagement by bolts of fastening devices
    • E05B15/04—Spring arrangements in locks
    • E05B2015/0486—A single spring working on more than one element
    • 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

Definitions

  • the invention relates to a motor vehicle lock having a locking mechanism with a rotary latch and at least one pawl, the rotary latch being lockable by means of the pawl at least in a main latching position, a rotary latch spring, the rotary latch being prestressed in the direction of an open position by means of the rotary latch spring, a locking device, wherein an actuating chain for unlocking the locking mechanism can be locked or unlocked by means of the locking device and a release device for the rotary latch spring.
  • an electromechanical assistance system for opening a locking mechanism has become known. If, for example, there is an incident due to a power failure, the locking mechanism can be opened with the support of a spring assigned to the rotary latch.
  • the motor vehicle lock has a locking mechanism made up of a rotary latch and a pawl, the locking mechanism preferably being able to be unlocked electrically.
  • Electrically unlockable locking systems are also referred to as electric locks or e-locks.
  • an electric drive can act on a release lever or directly on the pawl in order to disengage the pawl from the rotary latch. For example, if the locking mechanism is in a locked position and in a main latching position, the pawl can be pivoted by means of the electric drive and the rotary latch can thus be released.
  • a coil spring for example, is described as an energy store, which can be released via a lever mechanism, for example, so that a supporting impulse for unlocking the locking mechanism is available.
  • the object of the invention is to provide an improved motor vehicle lock.
  • it is the object of the invention to provide an emergency release function that can be easily integrated into existing locking systems and is also structurally simple and space-saving.
  • a motor vehicle lock having a locking mechanism with a rotary latch and at least one pawl, the rotary latch being lockable by means of the pawl at least in a main latching position, a rotary latch spring, wherein the rotary latch by means of the rotary latch spring in the direction of is biased towards an open position, a locking device, wherein an actuating chain for unlocking the locking mechanism can be locked or unlocked by means of the locking device, and a release device for the rotary latch spring, wherein the locking device can be actuated by means of the rotary latch spring and after the rotary latch spring has been released.
  • the construction of the motor vehicle lock according to the invention now makes it possible to convert a motor vehicle lock from a locked position into an unlocked position by means of the components available in the motor vehicle lock.
  • the rotary latch spring acting on the rotary latch in the motor vehicle lock and in particular is used.
  • the force latently present in the rotary latch spring in the main latching position is used, as a result of which the rotary latch spring can be used as an energy store for unlocking the motor vehicle lock.
  • the motor vehicle lock has a locking mechanism with a rotary latch and at least one pawl.
  • the pawl and catch are preferably pivoted in a lock case and interact with a lock holder, with a relative movement between a mostly stationary lock holder and the motor vehicle lock locking the locking mechanism being achievable.
  • Locking mechanisms with a first position and a main position as well as locking mechanisms with one, two or three ratchet and/or blocking pawls are known.
  • the pawl is spring biased towards the ratchet and is moved out of engagement with the ratchet by a trigger mechanism.
  • the rotary latch has a rotary latch spring, which is usually designed as a torsion spring. The rotary latch spring prestresses the rotary latch into an open position.
  • a locking device is used to disable an actuating chain for unlocking the locking mechanism.
  • electrical unlocking can take place, for example, by manually actuating a lock cylinder.
  • the invention preferably relates to motor vehicles that do not use a lock cylinder.
  • the locked lock in the event of a power failure or blackout, the locked lock must be able to be moved into an unlocked position in order to enable the lock to be actuated or the locking mechanism to be unlocked.
  • the motor vehicle lock has a release device for the rotary latch spring. By releasing the rotary latch spring, the energy of the rotary latch spring is available for transferring the motor vehicle lock from a locked position into an unlocked position.
  • the release device can be actuated electrically.
  • the release device can be triggered very quickly by electrical actuation, which is particularly advantageous if there is a power drop in the motor vehicle. If the controller detects, for example, that there is no longer sufficient current to unlock the unlocking mechanism in the motor vehicle, the release device can be actuated by means of an emergency current and preferably with a very low current intensity. It can thus be realized very fast switching times and it may be sufficient if only low Currents are available to perform an emergency unlocking.
  • the release device can advantageously have an electric drive, with a stop being able to be actuated, in particular rotated, by means of the electric drive.
  • the release device can be actuated very quickly by means of an electric drive, it being possible for a stop for the rotary latch spring to be displaced, pivoted or positioned.
  • the rotary latch spring is designed as a torsion spring.
  • the use of a torsion spring to apply an opening moment or an opening force to the rotary latch is common, so that standardized and readily available components of a motor vehicle lock can be used.
  • the leg spring advantageously encloses the axis of the rotary latch, with one leg resting against the rotary latch in such a way that a force can be introduced into the rotary latch by means of the leg.
  • the leg acting on the rotary latch can engage in the rotary latch or at least partially enclose the rotary latch.
  • Another leg of the leg spring then interacts with the release device. It has turned out to be advantageous that the release device has a stop for the other leg of the rotary latch spring.
  • a stop for one leg of the rotary latch spring then interacts with the release device.
  • the release device has a stop, for example in the form of a recess, the stop being movably mounted in the motor vehicle lock and/or the release device. It is conceivable, for example, for the stop to be formed from a component, for example a cylindrical component, which is accommodated pivotably in the release device. A recess can then be formed in the cylindrical component, into which the spring leg can be inserted in a form-fitting manner. The spring leg can then move into a release position by, for example, a rotational movement of the cylindrical component.
  • the cylindrical component which serves as a stop
  • the stop is arranged directly on a shaft of a motor.
  • the stop can also have a different geometric shape, which can be moved, for example, indirectly by means of a gear and via the electric drive, the stop being, for example, pivotable or displaceable. It is essential to the invention that one leg of the leg spring can be transferred from the locked position of the locking mechanism into a release position.
  • the rotary latch spring In the locked position of the locking mechanism, which is preferably a main detent position, the rotary latch spring is in the most compressed form, so that there is a maximum of stored energy in the rotary latch spring. If the rotary latch spring is now released from the stop, the energy stored by the rotary latch spring from the main latching position is available for unlocking the locking device.
  • a means for tensioning in particular a winding device, is provided for the rotary latch spring.
  • the released leg of the leg spring can be used to unlock the locking device.
  • the leg can, for example, pivot a gear wheel and/or move a lever and/or position a toggle spring.
  • the leg of the leg spring rests in a defined position, for example against an end stop in the housing of the motor vehicle lock.
  • the motor vehicle lock has been unlocked, it is possible to unlock the locking mechanism manually, for example, using an inside door handle or an outside door handle.
  • the torsion spring is then relaxed in the motor vehicle lock and held by the connection of the other leg to the rotary latch and the wrapping around the axle of the rotary latch in the locking mechanism.
  • a pull-up device By means of a pull-up device, there is then the possibility of bringing the released spring leg back into engagement with the stop of the release device.
  • This can be done manually, for example, by means of a suitable tool and, for example, by means of a clutch, or alternatively, the rotary latch spring can move back into the starting position when the door, for example, is closed and thus engage with the stop of the release device.
  • the clamping means can be actuated manually or, as described above, can be moved back to the starting position indirectly, for example by closing a door.
  • FIG 1 is a top view of a motor vehicle lock 1 in a view of a locking mechanism 2, a release device 3 and a locking device 4, 5, the locking mechanism 2 being mounted in a lock case 6.
  • the lock case 6 can be fastened to a body of a motor vehicle, for example by means of threads 7, 8 molded into the lock case 6.
  • the locking part axes 9, 10 are also connected to the lock case 6, for example by means of riveting. Shown is a main locking position, with a pawl 11 with a rotary latch 12 comes to rest in a main catch 13. The pawl 11 holds the catch 12 in the main locking position, so that a lock holder 14 can be fixed or held.
  • the pawl 11 is biased in the direction of the rotary latch 12 by means of a pawl spring 15 .
  • the pawl 11 can be moved around the axis 9 and disengaged from the rotary latch 12 by means of a release lever (not shown).
  • the actuating lever chain for actuating the release lever can be movable, for example, by an external actuating lever or an internal actuating lever or by means of an electric drive.
  • the actuating lever chain to the release lever can be interrupted by means of the locking device 4, 5, so that opening or unlocking of the locking mechanism can be prevented.
  • the motor vehicle lock 1 is then in a locked state.
  • the ratchet 12 is biased by a ratchet spring 16 counterclockwise about the axis 10 in the direction of arrow P1.
  • the rotary latch spring 16 designed as a leg spring engages with a first spring leg 17 in an opening 18 of the rotary latch 12 .
  • a second spring leg 19 of the rotary latch spring 16 rests against a stop 20 of the release device 3 .
  • the stop 20 forms a fixed bearing for the spring leg 19.
  • the stop 20 is arranged as a rotatable stop 20 on a motor shaft 21 of an electric motor 22 .
  • the stop 20 has a recess 23 so that the spring leg 19 can be released from the stop 20 by rotating the motor shaft 21 .
  • this embodiment is not restrictive, although here the stop 20 is arranged directly on the motor shaft 21, the stop 20 can also be pivotable by means of a gear and/or a lever mechanism. It is also conceivable that the stop 20 is arranged, for example, in a linearly displaceable manner in the motor vehicle lock 1 .
  • the main locking position of the locking mechanism 2, as in the figure 1 is reproduced, represents the closed state of the motor vehicle lock 1 when, for example, a movable component in which the motor vehicle lock 1 is installed is in a closed position. If the pawl 11 is moved counterclockwise out of the engagement area of the main catch 13 and released from the main catch 13, the rotary latch 12 also moves counterclockwise using the torsion spring 16 about the axis 10 and releases the lock holder 14. After a counterclockwise movement of the rotary latch 12, the lock holder 14 can move out of the inlet mouth 24 of the rotary latch 12, the rotary latch 12 being in an open position. The torsion spring 16 holds the rotary latch 12 in the open position, so that the motor vehicle lock can be locked or locked again by a relative movement between the motor vehicle lock 1 and the lock holder 14 .
  • the figure 1 shows the main latching position of the locking mechanism 2. If there is a drop in current in the main latching position of the locking mechanism 2, it may happen that there is insufficient power supply in the motor vehicle lock 1 to move the locking device 4, 5 from a locked position to an unlocked position.
  • the spring leg 19 can be moved out of the stop 20 by means of the release device 3, so that the spring leg 19 no longer rests in the recess 23, but becomes free.
  • the stop 20 can be rotated about the center line M.
  • the spring leg 19 is released and moves clockwise around the axis 10 in the direction of the arrow P2.
  • the spring leg 19 comes into engagement with the locking device 4, as a result of which the locking device 4 can be pivoted in the direction of the arrow P3, for example.
  • the locked motor vehicle lock 1 can thus be transferred to an unlocked state.
  • a further locking device 5 is shown, with the spring leg 19 displacing the locking device 5 linearly in the direction of the arrow P4.
  • the alternatively illustrated locking devices 4, 5 are of course only to be understood as examples, since a motor vehicle lock 1 usually has only one locking device 4, 5. Only the possibility that alternative forms of actuation can be formed with the spring leg 19 is to be shown.
  • an energy store for unlocking the motor vehicle lock 1 can be provided.
  • the spring leg 19 is brought back into the starting position in engagement with the stop 20, for example by means of a handle.
  • the motor vehicle lock 1 can again be returned to its initial position. The force of the rotary latch spring 16 is thus again available for emergency unlocking of the motor vehicle lock 1 .

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  • Lock And Its Accessories (AREA)

Description

Die Erfindung betrifft ein Kraftfahrzeugschloss aufweisend ein Gesperre mit einer Drehfalle und mindestens einer Sperrklinke, wobei die Drehfalle mittels der Sperrklinke zumindest in einer Hauptrastposition sperrbar ist, einer Drehfallenfeder, wobei die Drehfalle mittels der Drehfallenfeder in Richtung auf eine Offenstellung hin vorgespannt ist, eine Verriegelungseinrichtung, wobei eine Betätigungskette zum Entsperren des Gesperres mittels der Verriegelungseinrichtung verriegelbar oder entriegelbar ist und einer Freigabeeinrichtung für die Drehfallenfeder.The invention relates to a motor vehicle lock having a locking mechanism with a rotary latch and at least one pawl, the rotary latch being lockable by means of the pawl at least in a main latching position, a rotary latch spring, the rotary latch being prestressed in the direction of an open position by means of the rotary latch spring, a locking device, wherein an actuating chain for unlocking the locking mechanism can be locked or unlocked by means of the locking device and a release device for the rotary latch spring.

In heutigen Kraftfahrzeugen werden mehr und mehr den Bediener des Kraftfahrzeugs unterstützende Systeme integriert. Dabei liegt ein Bestreben der Automobilindustrie darin, die Handhabung des Kraftfahrzeugs zu vereinfachen und/oder den Bediener mittels elektromotorisch gesteuerter Bedienfunktionen zu unterstützen. Auch in Bezug auf Kraftfahrzeugschlösser, die beispielsweise zum Schließen von Klappen, Türen, Schiebetüren oder Hauben eingesetzt werden, kommen vermehrt elektrische Antriebe zum Einsatz. So ist es heute selbstverständlich, dass Schließsysteme zum Beispiel elektrisch verriegelt oder entriegelt werden. Beim Entriegeln bzw. Verriegeln wird eine Betätigungskette zum Öffnen des Schließsystems unterbrochen oder zum Beispiel stromlos gestellt. Eine Betätigungskette kann dabei aus einem Türaußengriff, einem Außenbetätigungshebel und einem unmittelbar auf ein Gesperre des Kraftfahrzeugs wirkenden Auslösehebel bestehen.Systems that support the operator of the motor vehicle are being integrated more and more in today's motor vehicles. In this context, the automotive industry is striving to simplify the handling of the motor vehicle and/or to support the operator by means of operating functions controlled by electric motors. Electric drives are also increasingly being used with regard to motor vehicle locks, which are used, for example, to close flaps, doors, sliding doors or hoods. Today it is a matter of course that locking systems are locked or unlocked electrically, for example. When unlocking or locking, an actuation chain for opening the locking system is interrupted or, for example, de-energized. An actuating chain can consist of an outside door handle, an outside actuating lever and a release lever acting directly on a locking mechanism of the motor vehicle.

Neben der Elektrifizierung des Kraftfahrzeugs ist es auch ein Bestreben der Automobilindustrie, ein höheres Maß an Designfreiheit zu schaffen. Die hohe Zuverlässigkeit der heutigen Schließsysteme erlaubt es dabei, dass auf eine mechanische Verriegelung des Kraftfahrzeugschlosses verzichtet werden kann, wobei auf Schließzylinder zum manuellen Entriegeln verzichtet wird.In addition to the electrification of motor vehicles, the automotive industry is also striving to create a greater degree of design freedom. The high reliability of today's locking systems makes it possible to dispense with mechanical locking of the motor vehicle lock, with lock cylinders for manual unlocking being dispensed with.

Dies führt weiterhin dazu, dass eine Gewichtsersparnis eintritt, die sich wiederum positiv auf den Kraftfahrzeugverbrauch auswirkt.This also leads to a weight saving, which in turn has a positive effect on motor vehicle consumption.

Um die elektrisch unterstützten Kraftfahrzeugschlösser auch in dem Fall vollumfänglich nutzen zu können, wenn beispielsweise ein Stromabfall oder - ausfall im Kraftfahrzeug vorliegt, sind verschiedene Lösungsansätze bekannt geworden, mit denen die elektrisch unterstützten Funktionen auch im Notfall betätigt werden können.In order to be able to use the electrically assisted motor vehicle locks to their full extent when, for example, there is a power drop or failure in the motor vehicle, various approaches have become known with which the electrically assisted functions can also be actuated in an emergency.

Um ein Kraftfahrzeug auch im Falle eines Stromausfalls öffnen zu können, ist aus der DE 10 2013 217 265 A1 ein Kraftfahrzeugschluss mit einer Schlossmechanik, einem elektrischen Antrieb und mit einem Energiespeicher bekannt geworden, mit dem das Schloss von einem Normalbetrieb auf einen Störbetrieb umgestellt werden kann. Dazu wird ein mechanischer Speicher zum Beispiel in Form einer Schenkelfeder eingesetzt. Diese Schenkelfeder ist vorgespannt, um so mechanische Energie zu speichern. Beim Schließen der Tür wird ein Federschenkel der Schenkelfeder bewegt und somit in eine Speicherposition verfahren. Um die Energie der Feder freizusetzen, wird ein Stift eingesetzt, der den vorgespannten Schenkel der Feder für eine Umstellung auf den Störbetrieb freigibt. Im Störbetrieb kann das Schloss anschließend mechanisch geöffnet werden.In order to be able to open a motor vehicle in the event of a power failure, DE 10 2013 217 265 A1 a motor vehicle circuit with a lock mechanism, an electric drive and an energy store has become known, with which the lock can be switched from normal operation to faulty operation. A mechanical storage device, for example in the form of a torsion spring, is used for this purpose. This torsion spring is preloaded in order to store mechanical energy. When the door is closed, a spring leg of the leg spring is moved and thus moved to a storage position. In order to release the energy of the spring, a pin is used, which releases the preloaded leg of the spring for a changeover to malfunction operation. In fault mode, the lock can then be opened mechanically.

Aus der FR 29 20 805 A ist ein elektromechanisches Assistenzsystem zum Öffnen eines Gesperres bekannt geworden. Kommt es zum Beispiel aufgrund eines Stromausfalls zu einem Störfall, wird mit Unterstützung einer der Drehfalle zugeordneten Feder ein Öffnen des Gesperres ermöglicht.From the FR 29 20 805 A an electromechanical assistance system for opening a locking mechanism has become known. If, for example, there is an incident due to a power failure, the locking mechanism can be opened with the support of a spring assigned to the rotary latch.

Aus der DE 10 2015 205 345 A1 ist ein Kraftfahrzeug bekannt geworden, das über einen mechanischen Energiespeicher verfügt. Das Kraftfahrzeugschloss weist ein Gesperre aus einer Drehfalle und einer Sperrklinke auf, wobei das Gesperre bevorzugt elektrisch entsperrbar ist. Elektrisch entsperrbare Schließsysteme werden auch als elektrische Schlösser oder e-Schlösser bezeichnet. Bei diesen Schließsystemen kann ein elektrischer Antrieb auf einen Auslösehebel oder unmittelbar auf die Sperrklinke wirken, um die Sperrklinke außer Eingriff mit der Drehfalle zu bringen. Liegt beispielsweise das Gesperre in einer gesperrten Position und in einer Hauptrastposition vor, so kann mittels des elektrischen Antriebs die Sperrklinke verschwenkt und somit die Drehfalle freigegeben werden. Kommt es nun zu einem Stromabfall und/oder im Falle eines Unfalls zu einem Fall, in dem erhöhte Kräfte notwendig sind, um die Sperrklinke außer Eingriff mit der Drehfalle zu bringen, so kann der Energiespeicher freigegeben werden. Als Energiespeicher wird beispielsweise eine Spiralfeder beschrieben, die über zum Beispiel eine Hebelmechanik freigebbar ist, so dass ein unterstützender Impuls zum Entsperren des Gesperres zur Verfügung steht.From the DE 10 2015 205 345 A1 a motor vehicle has become known that has a mechanical energy store. The motor vehicle lock has a locking mechanism made up of a rotary latch and a pawl, the locking mechanism preferably being able to be unlocked electrically. Electrically unlockable locking systems are also referred to as electric locks or e-locks. In these locking systems, an electric drive can act on a release lever or directly on the pawl in order to disengage the pawl from the rotary latch. For example, if the locking mechanism is in a locked position and in a main latching position, the pawl can be pivoted by means of the electric drive and the rotary latch can thus be released. If there is a drop in current and/or in the event of an accident, a case in which increased forces are required to disengage the pawl from the rotary latch, the energy store can be released. A coil spring, for example, is described as an energy store, which can be released via a lever mechanism, for example, so that a supporting impulse for unlocking the locking mechanism is available.

Die aus dem Stand der Technik bekannten Lösungen zum Unterstützen der Schlossfunktionalitäten sind entweder an aufwändige konstruktive Lösungen gebunden oder zielen unmittelbar auf ein unterstützendes Entsperren des Gesperres.The solutions known from the prior art for supporting the lock functionalities are either linked to complex structural solutions or aim directly at a supporting unlocking of the locking mechanism.

Die Aufgabe der Erfindung ist es, ein verbessertes Kraftfahrzeugschloss bereitzustellen. Insbesondere ist es Aufgabe der Erfindung, eine Notentriegelungsfunktion bereitzustellen, die leicht in vorhandene Schließsysteme integrierbar ist und darüber hinaus konstruktiv einfach und platzsparend aufgebaut ist.The object of the invention is to provide an improved motor vehicle lock. In particular, it is the object of the invention to provide an emergency release function that can be easily integrated into existing locking systems and is also structurally simple and space-saving.

Die Lösung der Aufgabe erfolgt erfindungsgemäß durch die Merkmale des unabhängigen Patentanspruchs 1. Vorteilhafte Ausgestaltungen der Erfindung sind in den Unteransprüchen angegeben. Es wird darauf hingewiesen, dass die Erfindung nicht auf die im Folgenden beschriebenen Ausführungsbeispiele beschränkt ist, es sind vielmehr Variationsmöglichkeiten im Rahmen des durch die Patentansprüche beanspruchten Schutzbereiches möglich.The object is achieved according to the invention by the features of independent patent claim 1. Advantageous refinements of the invention are specified in the dependent claims. It is pointed out that the invention is not limited to the exemplary embodiments described below; instead, variations are possible within the scope of the scope of protection claimed by the patent claims.

Die Aufgabe der Erfindung wird dadurch gelöst, dass ein Kraftfahrzeugschloss bereitgestellt wird, aufweisend ein Gesperre mit einer Drehfalle und mindestens einer Sperrklinke, wobei die Drehfalle mittels der Sperrklinke zumindest in einer Hauptrastposition sperrbar ist, einer Drehfallenfeder, wobei die Drehfalle mittels der Drehfallenfeder in Richtung auf eine Offenstellung hin vorgespannt ist, eine Verriegelungseinrichtung, wobei eine Betätigungskette zum Entsperren des Gesperres mittels der Verriegelungseinrichtung verriegelbar oder entriegelbar ist, und einer Freigabeeinrichtung für die Drehfallenfeder, wobei mittels der Drehfallenfeder und nach einer Freigabe der Drehfallenfeder die Verriegelungseinrichtung betätigbar ist. Durch den erfindungsgemäßen Aufbau des Kraftfahrzeugschlosses ist nun die Möglichkeit gegeben, ein Kraftfahrzeugschloss mittels der im Kraftfahrzeugschloss zur Verfügung stehenden Bauteile von einer verriegelten Position in eine entriegelte Position zu überführen. Dazu wird auf die im Kraftfahrzeugschloss und im Speziellen auf die auf die Drehfalle wirkende Drehfallenfeder zurückgegriffen. Dabei wird auf die in der Drehfallenfeder in der Hauptrastposition latent vorliegende Kraft zurückgegriffen, wodurch die Drehfallenfeder als Energiespeicher zum Entriegeln des Kraftfahrzeugschlosses nutzenbar ist.The object of the invention is achieved in that a motor vehicle lock is provided, having a locking mechanism with a rotary latch and at least one pawl, the rotary latch being lockable by means of the pawl at least in a main latching position, a rotary latch spring, wherein the rotary latch by means of the rotary latch spring in the direction of is biased towards an open position, a locking device, wherein an actuating chain for unlocking the locking mechanism can be locked or unlocked by means of the locking device, and a release device for the rotary latch spring, wherein the locking device can be actuated by means of the rotary latch spring and after the rotary latch spring has been released. The construction of the motor vehicle lock according to the invention now makes it possible to convert a motor vehicle lock from a locked position into an unlocked position by means of the components available in the motor vehicle lock. For this purpose, the rotary latch spring acting on the rotary latch in the motor vehicle lock and in particular is used. The force latently present in the rotary latch spring in the main latching position is used, as a result of which the rotary latch spring can be used as an energy store for unlocking the motor vehicle lock.

Das erfindungsgemäße Kraftfahrzeugschloss weist ein Gesperre mit einer Drehfalle und mindestens einer Sperrklinke auf. Sperrklinke und Drehfalle sind dabei bevorzugt in einem Schlosskasten schwenkbar gelagert und wirken mit einem Schlosshalter zusammen, wobei durch eine Relativbewegung zwischen einem zumeist ortsfesten Schlosshalter und dem Kraftfahrzeugschloss ein Verrasten des Gesperres erzielbar ist. Bekannt sind Gesperre mit einer Vorrast und einer Hauptrast sowie Gesperre mit ein, zwei oder drei Sperr- und/oder Blockadeklinken. Die Sperrklinke ist in Richtung der Drehfalle federvorgespannt und wird mittels eines Auslösemechanismusses aus dem Eingriff mit der Drehfalle herausbewegt. Die Drehfalle weist eine Drehfallenfeder auf, die zumeist als Schenkelfeder ausgebildet ist. Dabei spannt die Drehfallenfeder die Drehfalle in eine Offenstellung hin vor. Nach einem Entsperren, das heißt einem Außereingriffbringen der Sperrklinke mit der Drehfalle bewegt sich folglich die Drehfalle in eine Offenstellung, wodurch ein Schlosshalter freikommt. Ein Schenkel der Schenkelfeder ist dazu mit der Drehfalle in Eingriff, wohingegen ein zweiter Schenkel der Schenkelfeder gegen einen ortsfesten Anschlag im Kraftfahrzeugschloss anliegt. Durch eine Freigabeeinrichtung kann der am Anschlag anliegende Schenkel der Drehfallenfeder und insbesondere die in der Drehfallenfeder gespeicherte Energie freigesetzt werden und zum Entriegeln des Kraftfahrzeugschlosses genutzt werden.The motor vehicle lock according to the invention has a locking mechanism with a rotary latch and at least one pawl. The pawl and catch are preferably pivoted in a lock case and interact with a lock holder, with a relative movement between a mostly stationary lock holder and the motor vehicle lock locking the locking mechanism being achievable. Locking mechanisms with a first position and a main position as well as locking mechanisms with one, two or three ratchet and/or blocking pawls are known. The pawl is spring biased towards the ratchet and is moved out of engagement with the ratchet by a trigger mechanism. The rotary latch has a rotary latch spring, which is usually designed as a torsion spring. The rotary latch spring prestresses the rotary latch into an open position. After unlocking, that is, disengaging the pawl with the Catch consequently moves the catch in an open position, whereby a lock holder is released. For this purpose, one leg of the leg spring is in engagement with the rotary latch, whereas a second leg of the leg spring rests against a stationary stop in the motor vehicle lock. By means of a release device, the leg of the rotary latch spring resting against the stop and in particular the energy stored in the rotary latch spring can be released and used to unlock the motor vehicle lock.

Eine Verriegelungseinrichtung dient dazu, eine Betätigungskette zum Entsperren des Gesperres außer Funktion zu setzen. Wie vorstehend bereits beschrieben, kann bei einem Stromausfall ein elektrisches Entriegeln zum Beispiel mittels einer manuellen Betätigung eines Schließzylinders erfolgen. Die Erfindung bezieht sich bevorzugt auf Kraftfahrzeuge, die auf den Einsatz eines Schließzylinders verzichten. In diesem Fall muss bei einem Stromabfall oder Stromausfall das verriegelte Schloss in eine entriegelte Stellung überführbar sein, um ein Betätigen des Schlosses bzw. ein Entsperren des Gesperres zu ermöglichen. Erfindungsgemäß weist das Kraftfahrzeugschloss eine Freigabeeinrichtung für die Drehfallenfeder auf. Durch die Freigabe der Drehfallenfeder steht die Energie der Drehfallenfeder zum Überführen des Kraftfahrzeugschlosses von einer verriegelten Position in eine entriegelte Position zur Verfügung.A locking device is used to disable an actuating chain for unlocking the locking mechanism. As already described above, in the event of a power failure, electrical unlocking can take place, for example, by manually actuating a lock cylinder. The invention preferably relates to motor vehicles that do not use a lock cylinder. In this case, in the event of a power failure or blackout, the locked lock must be able to be moved into an unlocked position in order to enable the lock to be actuated or the locking mechanism to be unlocked. According to the invention, the motor vehicle lock has a release device for the rotary latch spring. By releasing the rotary latch spring, the energy of the rotary latch spring is available for transferring the motor vehicle lock from a locked position into an unlocked position.

In einer Ausführungsvariante ist die Freigabeeinrichtung elektrisch betätigbar. Durch eine elektrische Betätigung kann die Freigabeeinrichtung sehr schnell ausgelöst werden, was insbesondere in dem Fall von Vorteil ist, wenn es im Kraftfahrzeug zu einem Stromabfall kommt. Erfasst die Steuerung beispielsweise, dass kein ausreichender Strom mehr zur Entriegelung des Entriegelungsmechanismusses im Kraftfahrzeug zur Verfügung steht, so kann mittels eines Notstroms und bevorzugt mit einer sehr geringen Stromstärke die Freigabeeinrichtung betätigt werden. Es können somit sehr schnelle Schaltzeiten realisiert werden und es kann ausreichen, wenn lediglich geringe Ströme zur Verfügung stehen, um ein Notentriegeln durchzuführen. In vorteilhafter Weise kann dabei die Freigabeeinrichtung einen elektrischen Antrieb aufweisen, wobei mittels des elektrischen Antriebs ein Anschlag betätigbar, insbesondere verdrehbar ist. Mittels eines elektrischen Antriebs kann die Freigabeeinrichtung sehr schnell betätigt werden, wobei ein Verschieben, Verschwenken oder Positionieren eines Anschlags für die Drehfallenfeder ermöglichbar ist.In one embodiment variant, the release device can be actuated electrically. The release device can be triggered very quickly by electrical actuation, which is particularly advantageous if there is a power drop in the motor vehicle. If the controller detects, for example, that there is no longer sufficient current to unlock the unlocking mechanism in the motor vehicle, the release device can be actuated by means of an emergency current and preferably with a very low current intensity. It can thus be realized very fast switching times and it may be sufficient if only low Currents are available to perform an emergency unlocking. The release device can advantageously have an electric drive, with a stop being able to be actuated, in particular rotated, by means of the electric drive. The release device can be actuated very quickly by means of an electric drive, it being possible for a stop for the rotary latch spring to be displaced, pivoted or positioned.

In einer weiteren Ausgestaltungsvariante ist die Drehfallenfeder als Schenkelfeder ausgebildet. Der Einsatz einer Schenkelfeder zur Beaufschlagung der Drehfalle mit einem öffnenden Moment bzw. einer Öffnungskraft ist üblich, so dass auf standardisierte und bereitstehende Bauteile eines Kraftfahrzeugschlosses zurückgegriffen werden kann. In vorteilhafter Weise umschließt die Schenkelfeder die Achse der Drehfalle, wobei sich ein Schenkel derart an die Drehfalle anlegt, dass mittels des Schenkels eine Kraft in die Drehfalle einleitbar ist. Beispielhaft kann der die Drehfalle beaufschlagende Schenkel in die Drehfalle eingreifen oder die Drehfalle zumindest bereichsweise umschließen. Ein weiterer Schenkel der Schenkelfeder wirkt dann mit der Freigabeeinrichtung zusammen. Als vorteilhaft hat es sich dabei herausgestellt, dass die Freigabeeinrichtung einen Anschlag für den weiteren Schenkel der Drehfallenfeder aufweist. Ein Anschlag für einen Schenkel der Drehfallenfeder wirkt dann mit der Freigabeeinrichtung zusammen. Dabei weist die Freigabeeinrichtung einen Anschlag, zum Beispiel in Form einer Ausnehmung auf, wobei der Anschlag beweglich im Kraftfahrzeugschloss und/oder der Freigabeeinrichtung gelagert ist. Vorstellbar ist es beispielsweise, dass der Anschlag aus einem schwenkbar in der Freigabeeinrichtung aufgenommenen zum Beispiel zylindrischen Bauteil gebildet ist. In das zylindrische Bauteil ist dann eine Ausnehmung einformbar, in die der Federschenkel formschlüssig einfügbar ist. Durch zum Beispiel eine Rotationsbewegung des zylindrischen Bauteils kann dann der Federschenkel in eine Freigabestellung gelangen.In a further embodiment variant, the rotary latch spring is designed as a torsion spring. The use of a torsion spring to apply an opening moment or an opening force to the rotary latch is common, so that standardized and readily available components of a motor vehicle lock can be used. The leg spring advantageously encloses the axis of the rotary latch, with one leg resting against the rotary latch in such a way that a force can be introduced into the rotary latch by means of the leg. For example, the leg acting on the rotary latch can engage in the rotary latch or at least partially enclose the rotary latch. Another leg of the leg spring then interacts with the release device. It has turned out to be advantageous that the release device has a stop for the other leg of the rotary latch spring. A stop for one leg of the rotary latch spring then interacts with the release device. The release device has a stop, for example in the form of a recess, the stop being movably mounted in the motor vehicle lock and/or the release device. It is conceivable, for example, for the stop to be formed from a component, for example a cylindrical component, which is accommodated pivotably in the release device. A recess can then be formed in the cylindrical component, into which the spring leg can be inserted in a form-fitting manner. The spring leg can then move into a release position by, for example, a rotational movement of the cylindrical component.

Vorstellbar ist es dabei auch, dass das zylindrische Bauteil, das als Anschlag dient, unmittelbar auf einer Welle eines Motors angeordnet ist. Natürlich kann der Anschlag auch eine andere geometrische Form aufweisen, die zum Beispiel mittelbar mittels eines Getriebes und über den elektrischen Antrieb bewegbar ist, wobei der Anschlag zum Beispiel verschwenkbar oder verschiebbar ist. Erfindungswesentlich ist dabei, dass ein Schenkel der Schenkelfeder aus der gesperrten Position des Gesperres heraus in eine Freigabestellung überführbar ist.It is also conceivable that the cylindrical component, which serves as a stop, is arranged directly on a shaft of a motor. Of course, the stop can also have a different geometric shape, which can be moved, for example, indirectly by means of a gear and via the electric drive, the stop being, for example, pivotable or displaceable. It is essential to the invention that one leg of the leg spring can be transferred from the locked position of the locking mechanism into a release position.

In der gesperrten Stellung des Gesperres, die bevorzugt eine Hauptraststellung ist, liegt die Drehfallenfeder in der maximal komprimierten Form vor, so dass ein Maximum an gespeicherter Energie in der Drehfallenfeder vorliegt. Wird nun die Drehfallenfeder aus dem Anschlag herausgelöst, so steht die mittels der Drehfallenfeder gespeicherte Energie aus der Hauptrastposition zur Entriegelung der Verriegelungseinrichtung zur Verfügung.In the locked position of the locking mechanism, which is preferably a main detent position, the rotary latch spring is in the most compressed form, so that there is a maximum of stored energy in the rotary latch spring. If the rotary latch spring is now released from the stop, the energy stored by the rotary latch spring from the main latching position is available for unlocking the locking device.

In einer Ausführungsform der Erfindung ist ein Mittel zum Spannen, insbesondere eine Aufziehvorrichtung, der Drehfallenfeder vorgesehen. Ist die Freigabeeinrichtung einmal betätigt worden, so kann mittels des freigegebenen Schenkels der Schenkelfeder ein Entriegeln der Verriegelungseinrichtung erfolgen. Dazu kann der Schenkel zum Beispiel ein Zahnrad verschwenken und/oder einen Hebel verschieben und/oder eine Kippfeder positionieren. Der Schenkel der Schenkelfeder liegt nach dem Freigeben in einer definierten Position, zum Beispiel gegen einen Endanschlag im Gehäuse des Kraftfahrzeugschlosses an. Nach dem Entriegeln des Kraftfahrzeugschlosses besteht die Möglichkeit, das Gesperre zum Beispiel manuell mittels eines Türinnengriffs oder eines Türaußengriffs zu entsperren. Die Schenkelfeder liegt dann entspannt im Kraftfahrzeugschloss und gehalten durch die Anbindung des weiteren Schenkels an der Drehfalle sowie die Umschlingung der Achse der Drehfalle im Gesperre vor.In one embodiment of the invention, a means for tensioning, in particular a winding device, is provided for the rotary latch spring. Once the release device has been actuated, the released leg of the leg spring can be used to unlock the locking device. For this purpose, the leg can, for example, pivot a gear wheel and/or move a lever and/or position a toggle spring. After the release, the leg of the leg spring rests in a defined position, for example against an end stop in the housing of the motor vehicle lock. After the motor vehicle lock has been unlocked, it is possible to unlock the locking mechanism manually, for example, using an inside door handle or an outside door handle. The torsion spring is then relaxed in the motor vehicle lock and held by the connection of the other leg to the rotary latch and the wrapping around the axle of the rotary latch in the locking mechanism.

Mittels einer Aufzieheinrichtung besteht dann die Möglichkeit, den freigegebenen Federschenkel wieder in Eingriff mit dem Anschlag der Freigabeeinrichtung zu bringen. Dies kann beispielsweise mittels eines geeigneten Werkzeugs und beispielhaft mittels einer Kupplung manuell erfolgen oder alternativ kann sich die Drehfallenfeder beim Schließen der zum Beispiel Tür in die Ausgangslage zurückbewegen und somit in Eingriff mit dem Anschlag der Freigabeeinrichtung gelangen. Dabei kann das Spannmittel manuell betätigbar oder wie vorstehend beschrieben indirekt zum Beispiel mittels eines Schließens einer Tür in die Ausgangslage zurückbewegt werden.By means of a pull-up device, there is then the possibility of bringing the released spring leg back into engagement with the stop of the release device. This can be done manually, for example, by means of a suitable tool and, for example, by means of a clutch, or alternatively, the rotary latch spring can move back into the starting position when the door, for example, is closed and thus engage with the stop of the release device. The clamping means can be actuated manually or, as described above, can be moved back to the starting position indirectly, for example by closing a door.

Nachfolgend wird die Erfindung unter Bezugnahme auf die anliegende Zeichnung anhand eines Ausführungsbeispiels näher erläutert. Es gilt jedoch der Grundsatz, dass das Ausführungsbeispiel die Erfindung nicht beschränkt, sondern lediglich eine Ausführungsform darstellt. Die dargestellten Merkmale können einzeln oder in Kombination mit weiteren Merkmalen der Beschreibung wie auch den Patentansprüchen einzeln oder in Kombination ausgeführt werden.The invention is explained in more detail below with reference to the attached drawing using an exemplary embodiment. However, the principle applies that the exemplary embodiment does not limit the invention, but merely represents an embodiment. The features shown can be implemented individually or in combination with other features of the description as well as the patent claims individually or in combination.

Es zeigt:

Fig. 1
eine Draufsicht auf ein Kraftfahrzeugschloss in einer Ansicht auf ein in einem Schlosskasten gelagertes Gesperre und einer Freigabeeinrichtung.
It shows:
1
a top view of a motor vehicle lock in a view of a locking mechanism mounted in a lock case and a release device.

In der Figur 1 ist eine Draufsicht auf ein Kraftfahrzeugschloss 1 in einer Ansicht auf ein Gesperre 2, einer Freigabeeinrichtung 3 und einer Verriegelungseinrichtung 4, 5 wiedergegeben, wobei das Gesperre 2 in einem Schlosskasten 6 gelagert ist. Der Schlosskasten 6 ist beispielsweise mittels in den Schlosskasten 6 eingeformter Gewinde 7, 8 an einer Karosserie eines Kraftfahrzeugs befestigbar. Die Gesperrteilachsen 9, 10 sind ebenfalls am Schlosskasten 6, zum Beispiel mittels eines Vernietens, verbunden. Dargestellt ist eine Hauptrastposition, wobei eine Sperrklinke 11 mit einer Drehfalle 12 in einer Hauptrast 13 zur Anlage gelangt. Die Sperrklinke 11 hält die Drehfalle 12 in der Hauptrastposition, so dass ein Schlosshalter 14 fixierbar bzw. haltbar ist.In the figure 1 is a top view of a motor vehicle lock 1 in a view of a locking mechanism 2, a release device 3 and a locking device 4, 5, the locking mechanism 2 being mounted in a lock case 6. The lock case 6 can be fastened to a body of a motor vehicle, for example by means of threads 7, 8 molded into the lock case 6. The locking part axes 9, 10 are also connected to the lock case 6, for example by means of riveting. Shown is a main locking position, with a pawl 11 with a rotary latch 12 comes to rest in a main catch 13. The pawl 11 holds the catch 12 in the main locking position, so that a lock holder 14 can be fixed or held.

Die Sperrklinke 11 ist mittels einer Sperrklinkenfeder 15 in Richtung der Drehfalle 12 vorgespannt. Mittels eines nicht dargestellten Auslösehebels kann die Sperrklinke 11 um die Achse 9 herum bewegt und aus dem Eingriff mit der Drehfalle 12 gebracht werden. Die Betätigungshebelkette zum Betätigen des Auslösehebels kann beispielsweise durch einen Außenbetätigungshebel oder einen Innenbetätigungshebel oder mittels eines elektrischen Antriebs bewegbar sein. Die Betätigungshebelkette zum Auslösehebel kann mittels der Verriegelungseinrichtung 4, 5 unterbrochen werden, so dass ein Öffnen bzw. ein Entsperren des Gesperres unterbindbar ist. Das Kraftfahrzeugschloss 1 liegt dann in einem verriegelten Zustand vor.The pawl 11 is biased in the direction of the rotary latch 12 by means of a pawl spring 15 . The pawl 11 can be moved around the axis 9 and disengaged from the rotary latch 12 by means of a release lever (not shown). The actuating lever chain for actuating the release lever can be movable, for example, by an external actuating lever or an internal actuating lever or by means of an electric drive. The actuating lever chain to the release lever can be interrupted by means of the locking device 4, 5, so that opening or unlocking of the locking mechanism can be prevented. The motor vehicle lock 1 is then in a locked state.

Die Drehfalle 12 wird mittels einer Drehfallenfeder 16 im Gegenuhrzeigersinn um die Achse 10 herum in Richtung des Pfeils P1 vorgespannt. Dazu greift die als Schenkelfeder ausgebildete Drehfallenfeder 16 mit einem ersten Federschenkel 17 in eine Öffnung 18 der Drehfalle 12 ein. Ein zweiter Federschenkel 19 der Drehfallenfeder 16 liegt an einem Anschlag 20 der Freigabeeinrichtung 3 an. Der Anschlag 20 bildet insoweit ein Festlager für den Federschenkel 19.The ratchet 12 is biased by a ratchet spring 16 counterclockwise about the axis 10 in the direction of arrow P1. For this purpose, the rotary latch spring 16 designed as a leg spring engages with a first spring leg 17 in an opening 18 of the rotary latch 12 . A second spring leg 19 of the rotary latch spring 16 rests against a stop 20 of the release device 3 . The stop 20 forms a fixed bearing for the spring leg 19.

In diesem Ausführungsbeispiel ist der Anschlag 20 als drehbarer Anschlag 20 auf einer Motorwelle 21 eines Elektromotors 22 angeordnet. Der Anschlag 20 weist eine Ausnehmung 23 auf, so dass mittels einer Drehung der Motorwelle 21 der Federschenkel 19 von dem Anschlag 20 freigebbar ist. Selbstverständlich ist dieses Ausführungsbeispiel nicht beschränkend, obwohl hier der Anschlag 20 unmittelbar auf der Motorwelle 21 angeordnet ist, kann der Anschlag 20 auch mittels eines Getriebes und/oder einer Hebelmechanik verschwenkbar sein. Vorstellbar ist es auch, dass der Anschlag 20 beispielsweise linear verschiebbar im Kraftfahrzeugschloss 1 angeordnet ist.In this exemplary embodiment, the stop 20 is arranged as a rotatable stop 20 on a motor shaft 21 of an electric motor 22 . The stop 20 has a recess 23 so that the spring leg 19 can be released from the stop 20 by rotating the motor shaft 21 . Of course, this embodiment is not restrictive, although here the stop 20 is arranged directly on the motor shaft 21, the stop 20 can also be pivotable by means of a gear and/or a lever mechanism. It is also conceivable that the stop 20 is arranged, for example, in a linearly displaceable manner in the motor vehicle lock 1 .

Die Hauptraststellung des Gesperres 2, wie sie in der Figur 1 wiedergegeben ist, stellt den geschlossenen Zustand des Kraftfahrzeugschlosses 1 dar, wenn beispielsweise ein bewegliches Bauteil, in das das Kraftfahrzeugschloss 1 eingebaut ist, sich in einer Schließstellung befindet. Wird die Sperrklinke 11 aus dem Eingriffsbereich der Hauptrast 13 im Gegenuhrzeigersinn bewegt und von der Hauptrast 13 gelöst, so bewegt sich die Drehfalle 12 auch unter Einsatz der Schenkelfeder 16 im Gegenuhrzeigersinn um die Achse 10 und gibt den Schlosshalter 14 frei. Nach einer Bewegung der Drehfalle 12 im Gegenuhrzeigersinn kann der Schlosshalter 14 sich aus dem Einlaufmaul 24 der Drehfalle 12 herausbewegen, wobei sich die Drehfalle 12 in einer Offenstellung befindet. Die Schenkelfeder 16 hält die Drehfalle 12 in der Offenstellung, so dass das Kraftfahrzeugschloss erneut durch eine Relativbewegung zwischen Kraftfahrzeugschloss 1 und Schlosshalter 14 verschließbar bzw. sperrbar ist.The main locking position of the locking mechanism 2, as in the figure 1 is reproduced, represents the closed state of the motor vehicle lock 1 when, for example, a movable component in which the motor vehicle lock 1 is installed is in a closed position. If the pawl 11 is moved counterclockwise out of the engagement area of the main catch 13 and released from the main catch 13, the rotary latch 12 also moves counterclockwise using the torsion spring 16 about the axis 10 and releases the lock holder 14. After a counterclockwise movement of the rotary latch 12, the lock holder 14 can move out of the inlet mouth 24 of the rotary latch 12, the rotary latch 12 being in an open position. The torsion spring 16 holds the rotary latch 12 in the open position, so that the motor vehicle lock can be locked or locked again by a relative movement between the motor vehicle lock 1 and the lock holder 14 .

Die Figur 1 zeigt die Hauptraststellung des Gesperres 2. Kommt es in der Hauptraststellung des Gesperres 2 zu einem Stromabfall, so kann es vorkommen, dass keine ausreichende Stromversorgung im Kraftfahrzeugschloss 1 vorliegt, um die Verriegelungseinrichtung 4, 5 von einer verriegelten Stellung in eine entriegelte Stellung zu überführen. In diesem Fall kann mittels der Freigabeeinrichtung 3 der Federschenkel 19 aus dem Anschlag 20 herausbewegt werden, so dass der Federschenkel 19 nicht mehr in der Ausnehmung 23 anliegt, sondern frei wird. Dazu kann, wie im Ausführungsbeispiel dargestellt, der Anschlag 20 um die Mittellinie M herum verdreht werden. Der Federschenkel 19 kommt frei und bewegt sich im Uhrzeigersinn in Richtung des Pfeils P2 um die Achse 10. Dabei gelangt der Federschenkel 19 in Eingriff mit der Verriegelungseinrichtung 4, wodurch die Verriegelungseinrichtung 4 beispielsweise in Richtung des Pfeils P3 verschwenkbar ist. Das verriegelte Kraftfahrzeugschloss 1 kann somit in einen entriegelten Zustand überführt werden.the figure 1 shows the main latching position of the locking mechanism 2. If there is a drop in current in the main latching position of the locking mechanism 2, it may happen that there is insufficient power supply in the motor vehicle lock 1 to move the locking device 4, 5 from a locked position to an unlocked position. In this case, the spring leg 19 can be moved out of the stop 20 by means of the release device 3, so that the spring leg 19 no longer rests in the recess 23, but becomes free. For this purpose, as shown in the exemplary embodiment, the stop 20 can be rotated about the center line M. The spring leg 19 is released and moves clockwise around the axis 10 in the direction of the arrow P2. The spring leg 19 comes into engagement with the locking device 4, as a result of which the locking device 4 can be pivoted in the direction of the arrow P3, for example. The locked motor vehicle lock 1 can thus be transferred to an unlocked state.

Als Alternative ist in der Figur 1 eine weitere Verriegelungseinrichtung 5 dargestellt, wobei der Federschenkel 19 die Verriegelungseinrichtung 5 linear in Richtung des Pfeils P4 verschiebt. Die alternativ dargestellten Verriegelungseinrichtungen 4, 5 sind natürlich lediglich beispielhaft zu verstehen, da ein Kraftfahrzeugschloss 1 üblicherweise lediglich über eine Verriegelungseinrichtung 4, 5 verfügt. Dargestellt werden soll lediglich die Möglichkeit, dass mit dem Federschenkel 19 alternative Formen einer Betätigung ausbildbar sind.As an alternative in the figure 1 a further locking device 5 is shown, with the spring leg 19 displacing the locking device 5 linearly in the direction of the arrow P4. The alternatively illustrated locking devices 4, 5 are of course only to be understood as examples, since a motor vehicle lock 1 usually has only one locking device 4, 5. Only the possibility that alternative forms of actuation can be formed with the spring leg 19 is to be shown.

Durch den erfindungsgemäßen Einsatz einer Freigabeeinrichtung 3, die mittels einer Drehfallenfeder 16 zusammenwirkt, kann ein Energiespeicher zum Entriegeln des Kraftfahrzeugschlosses 1 bereitgestellt werden. Nicht dargestellt aber erfindungsgemäß vorstellbar ist es, dass der Federschenkel 19 zum Beispiel mittels einer Handhabe wieder in die Ausgangslage im Eingriff mit dem Anschlag 20 gebracht wird. Somit kann nach einem Notentriegeln das Kraftfahrzeugschloss 1 erneut in seine Ausgangslage zurück überführt werden. Somit steht die Kraft der Drehfallenfeder 16 erneut zum Notentriegeln des Kraftfahrzeugschlosses 1 zur Verfügung.By using a release device 3 according to the invention, which interacts by means of a rotary latch spring 16, an energy store for unlocking the motor vehicle lock 1 can be provided. Not shown but conceivable according to the invention is that the spring leg 19 is brought back into the starting position in engagement with the stop 20, for example by means of a handle. Thus, after an emergency unlocking, the motor vehicle lock 1 can again be returned to its initial position. The force of the rotary latch spring 16 is thus again available for emergency unlocking of the motor vehicle lock 1 .

BezugszeichenlisteReference List

11
Kraftfahrzeugschlossmotor vehicle lock
22
Gesperrelock
33
Freigabeeinrichtungrelease device
4, 54, 5
Verriegelungseinrichtunglocking device
66
Schlosskastenlock box
7, 87, 8
Gewindethread
9, 109, 10
AchsenAxles
1111
Sperrklinkepawl
1212
Drehfallerotary latch
1313
Hauptrastmain rest
1414
Schlosshalterlock holder
1515
Sperrklinkenfederpawl spring
1616
Drehfallenfederrotary latch spring
17, 1917, 19
Federschenkelfeather leg
1818
Öffnungopening
2020
Anschlagattack
2121
Motorwellemotor shaft
2222
Elektromotorelectric motor
2323
Ausnehmungrecess
2424
Einlaufmaulinlet mouth
P1, P2, P3, P4P1, P2, P3, P4
PfeilArrow
MM
Mittelliniecenterline

Claims (10)

  1. Motor vehicle latch (1) having a locking mechanism (2) with a catch (12) and at least one pawl (11), the catch (12) being lockable by means of the pawl (11) at least in a main ratchet position (13), and having a catch spring (16), the catch (12) being pretensioned by means of the catch spring (16) in the direction of an opening position, having a locking device (4, 5), an actuating chain for unlocking the locking mechanism (2) being lockable or unlockable by means of the locking device (4, 5), and having a release device (3) for the catch spring (16), characterized in that the locking device (4, 5) is operable by means of the catch spring (16) and after release of the catch spring (16).
  2. Motor vehicle latch (1) according to claim 1, characterized in that the release device (3) is electrically operable.
  3. Motor vehicle latch (1) according to either claim 1 or claim 2, characterized in that the catch spring (16) is designed as a leg spring.
  4. Motor vehicle latch (1) according to any of claims 1 to 3, characterized in that the release device (3) comprises a stop (20) for a leg (19) of the catch spring (16).
  5. Motor vehicle latch (1) according to claim 4, characterized in that the stop (20) comprises a recess (23) for receiving a leg (19) of the catch spring (16).
  6. Motor vehicle latch (1) according to either claim 4 or claim 5, characterized in that the release device (3) comprises an electric drive (22), the stop (20) being operable by means of said electric drive (22).
  7. Motor vehicle latch (1) according to any of claims 4 to 6, characterized in that the stop (20) can be rotated and/or displaced by means of the release device (3).
  8. Motor vehicle latch (1) according to any of claims 5 to 7, characterized in that the catch spring (16), in particular a leg (19) of the catch spring (16), can be interlockingly inserted into the recess (23).
  9. Motor vehicle latch (1) according to any of claims 6 to 8, characterized in that the stop (20) interacts directly or indirectly with a motor shaft (21) of the electric drive (22).
  10. Motor vehicle latch (1) according to any of claims 1 to 9, characterized in that a means for tensioning, in particular a retractor device, of the catch spring (16) is provided.
EP19804624.5A 2018-11-16 2019-10-31 Motor vehicle lock Active EP3880913B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102018128810.7A DE102018128810A1 (en) 2018-11-16 2018-11-16 Motor vehicle lock
PCT/DE2019/100938 WO2020098869A1 (en) 2018-11-16 2019-10-31 Motor vehicle lock

Publications (2)

Publication Number Publication Date
EP3880913A1 EP3880913A1 (en) 2021-09-22
EP3880913B1 true EP3880913B1 (en) 2022-12-28

Family

ID=68581119

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19804624.5A Active EP3880913B1 (en) 2018-11-16 2019-10-31 Motor vehicle lock

Country Status (4)

Country Link
EP (1) EP3880913B1 (en)
CN (1) CN113015834B (en)
DE (1) DE102018128810A1 (en)
WO (1) WO2020098869A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3110925B1 (en) * 2020-05-29 2023-05-26 Vitesco Technologies Vehicle opening emergency access device with retention lever and pull wire

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB0006931D0 (en) * 2000-03-23 2000-05-10 Meritor Light Vehicle Sys Ltd Latch mechanism
CN101033669A (en) * 2006-03-06 2007-09-12 杜再钦 Vehicle door lock structure
US8915524B2 (en) * 2007-03-08 2014-12-23 GM Global Technology Operations LLC Vehicle door auxiliary latch release
CN101109246B (en) * 2007-08-10 2010-12-01 宁波信泰机械有限公司 Full-automatic electric door lock for vehicle
FR2920805B1 (en) 2007-09-11 2009-11-06 Peugeot Citroen Automobiles Sa SYSTEM FOR ASSISTING THE OPENING OF A LOCK.
DE202007013330U1 (en) * 2007-09-21 2009-02-12 BROSE SCHLIEßSYSTEME GMBH & CO. KG Motor vehicle lock
DE102013217256B3 (en) 2013-08-29 2015-03-05 Robert Bosch Gmbh Socket and high-current connector having such a socket
DE102013217265A1 (en) * 2013-08-29 2015-03-19 Kiekert Ag Electric motor vehicle lock with spring accumulator
CN203835082U (en) * 2014-04-22 2014-09-17 伟速达（中国）汽车安全***有限公司 Automobile front cover lock double opening mechanism
DE102015205345A1 (en) 2015-03-24 2016-09-29 Kiekert Ag Actuating device for a motor vehicle electric lock with spring accumulator
CN108397062A (en) * 2017-02-08 2018-08-14 恩坦华产品有限责任公司 The device and method of uniform release action power in vehicle latche

Also Published As

Publication number Publication date
CN113015834B (en) 2022-09-27
CN113015834A (en) 2021-06-22
WO2020098869A1 (en) 2020-05-22
DE102018128810A1 (en) 2020-05-20
EP3880913A1 (en) 2021-09-22

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