EP3147433B1 - Motor vehicle lock - Google Patents

Motor vehicle lock Download PDF

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Publication number
EP3147433B1
EP3147433B1 EP16186317.0A EP16186317A EP3147433B1 EP 3147433 B1 EP3147433 B1 EP 3147433B1 EP 16186317 A EP16186317 A EP 16186317A EP 3147433 B1 EP3147433 B1 EP 3147433B1
Authority
EP
European Patent Office
Prior art keywords
motor vehicle
vehicle lock
shape memory
resetting
arrangement according
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
EP16186317.0A
Other languages
German (de)
French (fr)
Other versions
EP3147433A3 (en
EP3147433A2 (en
Inventor
Jörg Reinert
Tatjana Schmidt
Markus Kothe
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Brose Schliesssysteme GmbH and Co KG
Original Assignee
Brose Schliesssysteme GmbH and Co KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Brose Schliesssysteme GmbH and Co KG filed Critical Brose Schliesssysteme GmbH and Co KG
Publication of EP3147433A2 publication Critical patent/EP3147433A2/en
Publication of EP3147433A3 publication Critical patent/EP3147433A3/en
Application granted granted Critical
Publication of EP3147433B1 publication Critical patent/EP3147433B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • EFIXED CONSTRUCTIONS
    • E05LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05BLOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B47/00Operating or controlling locks or other fastening devices by electric or magnetic means
    • E05B47/0001Operating or controlling locks or other fastening devices by electric or magnetic means with electric actuators; Constructional features thereof
    • E05B47/0009Operating or controlling locks or other fastening devices by electric or magnetic means with electric actuators; Constructional features thereof with thermo-electric actuators, e.g. heated bimetals
    • EFIXED CONSTRUCTIONS
    • E05LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05BLOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B51/00Operating or controlling locks or other fastening devices by other non-mechanical means
    • E05B51/005Operating or controlling locks or other fastening devices by other non-mechanical means by a bimetallic or memory-shape element
    • EFIXED CONSTRUCTIONS
    • E05LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05BLOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B77/00Vehicle locks characterised by special functions or purposes
    • E05B77/02Vehicle locks characterised by special functions or purposes for accident situations
    • EFIXED CONSTRUCTIONS
    • E05LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05BLOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B79/00Mounting or connecting vehicle locks or parts thereof
    • E05B79/10Connections between movable lock parts
    • E05B79/20Connections between movable lock parts using flexible connections, e.g. Bowden cables
    • EFIXED CONSTRUCTIONS
    • E05LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05BLOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B81/00Power-actuated vehicle locks
    • E05B81/02Power-actuated vehicle locks characterised by the type of actuators used
    • E05B81/04Electrical
    • E05B81/06Electrical using rotary motors
    • EFIXED CONSTRUCTIONS
    • E05LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05BLOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B81/00Power-actuated vehicle locks
    • E05B81/12Power-actuated vehicle locks characterised by the function or purpose of the powered actuators
    • E05B81/14Power-actuated vehicle locks characterised by the function or purpose of the powered actuators operating on bolt detents, e.g. for unlatching the bolt
    • EFIXED CONSTRUCTIONS
    • E05LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05BLOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B81/00Power-actuated vehicle locks
    • E05B81/24Power-actuated vehicle locks characterised by constructional features of the actuator or the power transmission
    • E05B81/32Details of the actuator transmission
    • E05B81/42Cams
    • EFIXED CONSTRUCTIONS
    • E05LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05BLOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B81/00Power-actuated vehicle locks
    • E05B81/54Electrical circuits
    • E05B81/64Monitoring or sensing, e.g. by using switches or sensors
    • EFIXED CONSTRUCTIONS
    • E05LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05BLOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B81/00Power-actuated vehicle locks
    • E05B81/54Electrical circuits
    • E05B81/64Monitoring or sensing, e.g. by using switches or sensors
    • E05B81/66Monitoring or sensing, e.g. by using switches or sensors the bolt position, i.e. the latching status
    • EFIXED CONSTRUCTIONS
    • E05LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05BLOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B81/00Power-actuated vehicle locks
    • E05B81/54Electrical circuits
    • E05B81/64Monitoring or sensing, e.g. by using switches or sensors
    • E05B81/66Monitoring or sensing, e.g. by using switches or sensors the bolt position, i.e. the latching status
    • E05B81/68Monitoring or sensing, e.g. by using switches or sensors the bolt position, i.e. the latching status by sensing the position of the detent
    • EFIXED CONSTRUCTIONS
    • E05LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05BLOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B81/00Power-actuated vehicle locks
    • E05B81/54Electrical circuits
    • E05B81/80Electrical circuits characterised by the power supply; Emergency power operation
    • EFIXED CONSTRUCTIONS
    • E05LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05BLOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B81/00Power-actuated vehicle locks
    • E05B81/54Electrical circuits
    • E05B81/80Electrical circuits characterised by the power supply; Emergency power operation
    • E05B81/82Electrical circuits characterised by the power supply; Emergency power operation using batteries other than the vehicle main battery
    • EFIXED CONSTRUCTIONS
    • E05LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05BLOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B81/00Power-actuated vehicle locks
    • E05B81/54Electrical circuits
    • E05B81/90Manual override in case of power failure

Definitions

  • the invention relates to a motor vehicle lock arrangement with a motor vehicle lock according to the preamble of claim 1 and a motor vehicle lock arrangement with a motor vehicle lock according to the preamble of claim 13.
  • the pawl holds the lock latch in a closed position and can be lifted out with a main drive, for example, designed as an electric motor, for normal operation lifting or an auxiliary drive for emergency lifting.
  • the auxiliary drive is formed by a shape memory arrangement with at least one shape memory element, the change in shape of which releases the pawl.
  • the motor vehicle lock can have a resetting device (not described in more detail) for manual or automatic resetting of the shape change of the shape memory element causing the pawl to be lifted out.
  • an emergency-related lifting represents an additional effort, in particular depending on the implementation of the provision, which can be seen as a loss of comfort.
  • the invention is based on the object of designing and developing the known motor vehicle lock arrangement in such a way that the additional outlay for the user associated with the function of the emergency-related lifting of the pawl is reduced.
  • the resetting of the shape memory element can be fundamentally accomplish with little effort.
  • the motor vehicle lock can be easily converted into a basic state after an emergency lifting of the pawl.
  • the restoring element is designed in the manner of a slide and / or in the manner of a lever.
  • the reset function can be implemented particularly easily.
  • the restoring force is thereby particularly easy to introduce into the shape memory element.
  • the reset element can easily be designed in such a way that, according to the proposal, it is accessible from outside the motor vehicle lock. In this way, the return movement can also be performed in a defined manner.
  • the resetting of the shape memory element can be carried out particularly easily with the aid of a tool.
  • a particularly simple and safe shutdown of the shape memory element can be achieved after lifting the pawl.
  • the term "emergency” summarizes those situations which can impair the normal operation of lifting the pawl. This can be a crash situation, for example, in which larger forces have to be applied to lift the pawl than in normal operation. Such an emergency can be recognized, for example, by the fact that the main drive was actuated to lift the pawl, but did not lift it. Alternatively, however, such an emergency can also be detected by an acceleration sensor. Another emergency can occur if only a small amount of energy is available, so that the auxiliary drive is used for the last lifting process for safety reasons.
  • the supply voltage is preferably used as a measure of the amount of energy. This represents a particularly simple and inexpensive variable that reliably determines the amount of energy.
  • This motor vehicle lock arrangement can also have all of the features described in this application, individually or in combination. In this respect, reference is made to the entire description of the application and the claims.
  • Fig. 1 shows a proposed motor vehicle lock arrangement 1.
  • the motor vehicle lock arrangement 1 has a motor vehicle lock 2 for holding a motor vehicle door.
  • the motor vehicle lock arrangement 1 in question is used for all types of motor vehicle doors of a motor vehicle.
  • the term "motor vehicle door” is to be understood broadly. It particularly includes side doors, rear doors, tailgates, boot lids or bonnets.
  • the motor vehicle lock arrangement 1 has a first locking element 3, here and preferably a locking latch 3a pivotable about a locking latch axis A, and a locking element 4 designed as a locking pawl 4 pivotable about a locking pawl axis B for holding the first locking element 3, 3a in at least one holding position.
  • the motor vehicle lock 2 has two holding positions, namely a main closing position and a pre-closing position.
  • the motor vehicle lock arrangement 1 has a further locking element, the locking wedge 5, which interacts in the usual way with the lock latch 3a.
  • the motor vehicle lock arrangement 1 can also have a locking bolt which plunges into the motor vehicle lock 2 for holding a motor vehicle door and is held there by the pawl. This can then form a first locking element 3 of the motor vehicle lock arrangement 1.
  • the German utility model application based on the same applicant is used DE 20 2015 104 003 referenced, which is made the subject of this application.
  • the proposed motor vehicle lock arrangement 1 has a shape memory drive 6 for lifting the pawl 4.
  • the shape memory drive 6 has a shape memory arrangement 7 with at least one shape memory element 8 for lifting out the pawl 4 by changing the shape of the shape memory element 8.
  • the Fig. 4 shows the motor vehicle lock arrangement 2 with the pawl 4 lifted out by the shape memory element 8.
  • the shape memory drive 8 is designed as an auxiliary drive 9 for emergency lifting of the pawl 4.
  • it can have a main drive 10 for lifting the pawl 4 in accordance with normal operation.
  • the main drive 10 is designed as an electric motor 11.
  • the Fig. 3 shows the motor vehicle lock arrangement 1 with the pawl 4 lifted by the main drive 10.
  • the proposed motor vehicle lock arrangement 1 has a resetting device 12 for manually resetting the shape change of the shape memory element 8 which causes the pawl 4 to be lifted out.
  • the resetting device has a resetting element 13, via which a resetting force can be introduced into the shape memory element 8 for the purpose of resetting the shape memory element 8.
  • the reset element 8 is accessible from outside the motor vehicle lock 2.
  • a manual resetting of the shape memory element 8 from the outside is made possible in a particularly simple manner by the proposed solution. It is not necessary to open and / or dismantle parts of the motor vehicle lock 2. This results in a cost-effective and at the same time easily resettable motor vehicle lock 2.
  • the shape memory drive 6 does not have to be designed to be stronger in order to overcome any restoring forces when the pawl 4 is lifted, as would be necessary, for example, if a restoring spring associated with the shape memory element 8 were provided. Therefore, the restoring device, in particular the shape memory drive as a whole, is preferably designed without a spring.
  • a spring in the drive train between the shape memory arrangement 7 and the pawl 4, which in total exert a force on the shape memory arrangement 7 in the restoring direction which is less than the required restoring force to reset the shape memory arrangement after switching it off.
  • a spring can be a pawl spring assigned to the pawl 4. The force which the pawl spring exerts on the shape memory arrangement 7 is preferably less than the restoring force required to reset the shape memory arrangement 7 after the latter has been switched off.
  • An interesting feature of the proposed solution is the fact that, in the event of an emergency lifting of the pawl 4 by the shape memory drive 6, there is a holding effect which ensures that the pawl 4 is permanently held in its raised position by the shape memory drive 6 until the above reset has been carried out becomes. This, in particular, without further energization of the shape memory drive 6. Such a holding effect is particularly advantageous when the energy supply is weakened, since the pawl 4 can be lifted out several times.
  • the reset element 13 is designed in the manner of a slide, in particular a linear slide. It is guided in a, in particular linear, guide, not shown.
  • the reset element 13 can also be designed in the manner of a lever, in particular a pivoting lever. Even with a lever-like design, the resetting of the shape memory element 8 can be carried out by a defined movement.
  • the manual return movement can essentially take place against the lifting movement by the shape memory element 8 and / or in the same direction with the lifting movement. Furthermore, the restoring movement can take place essentially perpendicular to the lifting movement by the shape memory element 8.
  • the restoring movement is preferably the movement by means of which the shape memory element 8 is reset manually from outside the motor vehicle lock 2.
  • the restoring element 13 preferably has an engagement surface 14 for introducing the restoring force.
  • the motor vehicle lock 2 moreover, preferably has a support surface 15 for supporting the restoring force.
  • the engagement surface 14 and the support surface 15 point in opposite directions. It is thus easily possible to introduce the restoring force by means of a pliers-like tool via the engagement surface 14 and the support surface 15. An overall particularly simple resetting of the shape memory element 8 results.
  • the motor vehicle lock 2 is equipped with a housing 16 which has a housing opening 17.
  • the restoring element 13, in particular its engagement surface 14, is preferably accessible through the housing opening 17. Additionally or alternatively, the restoring element 13, in particular its engagement surface 14, can protrude into the housing opening 17 and / or can protrude through the housing opening. In this way, the interior of the motor vehicle lock 2 can be protected by the housing 16, while the restoring element 13 for restoring the shape memory element 8 is easily accessible from outside the motor vehicle lock 2.
  • the support surface 15 is preferably formed on the housing 16. The distance between the support surface 15 and the engagement surface 14 before the resetting of the shape memory element 8 is preferably a maximum of 5 cm, further preferably a maximum of 3 cm, in particular a maximum of 2 cm.
  • an attack space 17a is provided on the housing, in particular through the housing opening 17, for engaging and resetting the resetting element 8 with a tool.
  • the motor vehicle lock 2 can have a rear plate 18, which is preferably formed from a metal material.
  • the rear plate 18 is preferably arranged on the housing 16 or forms part of the housing 16.
  • the pawl 4 is mounted on the rear plate 18.
  • the first closing element 3, in particular the lock latch 3a can also be mounted on the rear plate 18.
  • the rear plate 18 preferably also forms an inlet mouth 19 for a locking wedge 5 which interacts with the lock latch 3a.
  • the pawl 4 and / or the lock latch 3a can or one or more mandrels 20a, 20b can be arranged on the rear plate 18.
  • the restoring element 13 is preferably accessible on the side of the motor vehicle lock 2 opposite the rear plate 18.
  • the reset element 13 can alternatively also be accessible on the side of the rear plate 18.
  • the restoring element 13 can be accessible on an end face 16a of the motor vehicle lock 2.
  • the reset element 13 is accessible for manual reset in this mounted state.
  • the reset element 13 is preferably only accessible for manual resetting when the motor vehicle door is open.
  • the reset element 13 can be decoupled from the pawl 4 in such a way that it can reset the shape memory element 8, but that the pawl 4 cannot be lifted by adjusting the reset element 13. This is advantageous in terms of theft protection.
  • the reset element 13 has a deflection guide for deflecting the shape memory element 8.
  • the shape memory element 8 in particular U-shaped, is placed in the deflection guide 21 of the restoring element 13.
  • the shape memory element 8 is fastened to the restoring element 13 by folding over the deflection guide 21. This makes it particularly easy to ensure tolerance compensation between the two strands 8a, 8b of the shape memory element.
  • the at least one shape memory element 8 can also be attached to the restoring element 13 in a different shape, in particular in a non-positive and / or positive manner.
  • the reset path of the reset element 13 preferably corresponds to the adjustment path of the reset element 13 through the shape memory element 8 when the pawl 4 is lifted out.
  • the adjustment path and / or the reset path are preferably limited by stops (not shown).
  • the stops are preferably formed on the housing 16, for example on the housing cover 16b.
  • the housing 16 has an above rear plate 18, a housing box 16a and a housing cover 16b.
  • the rear plate 18 is preferably arranged on the bottom of the housing box 16c.
  • the stops can be arranged on the housing 16, in particular on the housing cover 16b.
  • the shape memory element 8 extends parallel to the rear plate 18.
  • the motor vehicle lock 2 can be designed to be elongate overall, the shape memory element 8 then extending essentially in the longitudinal direction of the motor vehicle lock 2.
  • the shape memory element 8 preferably intersects the connecting line between the axis of rotation of the lock latch 3a and the axis of rotation of the pawl 4. As a result, the shape memory element 8 in the motor vehicle lock 2 can be extended as long as possible. At the same time, this results in a compact design.
  • the shape memory arrangement 7 is assigned an insulation arrangement for temperature insulation of the shape memory element 8. This ensures reproducible operation of the shape memory drive 6 even at different outside temperatures.
  • a sol-gel coating of the shape memory element 8 has proven particularly useful as an insulation arrangement.
  • the motor vehicle lock 2 preferably has an electrical switching arrangement 22 which switches off the shape memory element 8 and / or the main drive 10 when the pawl 4 is in the raised position.
  • a position of the pawl 4 in particular a stop position and / or a release position and / or a position of the lock latch 3a, in particular the open position and / or main closing position and / or the pre-latching position, can be detected with a sensor 22a or 22b. In this way, an overload of the shape memory element 8 is avoided.
  • the sensor for detecting the pawl position 22a detects the position of the pawl 4 via a lever 22c.
  • the motor vehicle lock arrangement 1 has a control arrangement 23 which is designed for the operation of the shape memory drive 6.
  • the control arrangement 23 switches over to release the pawl 4 from the main drive 10 to an auxiliary drive 9 when the amount of energy stored in an energy store for the electrical supply of the main drive 10 falls below a predetermined threshold value.
  • the motor vehicle lock arrangement 1 can also have all of the features described above individually or in combination. In this respect, reference is made to the above description. In addition, both motor vehicle lock arrangements 1 can have all of the features described below individually or in combination.
  • the energy store can be the vehicle battery and / or a battery and / or an accumulator and / or a capacitor for operating the motor vehicle lock 2.
  • the energy store can be a network of energy stores, in particular also of different types.
  • the network of battery stores can also have an energy store specifically assigned to the motor vehicle lock 2. This is preferably arranged on or in the motor vehicle lock 2.
  • the energy store can also be an energy store assigned exclusively to the shape memory drive 6.
  • the supply voltage can preferably be used as a measure of the amount of energy. This enables a particularly simple and reliable determination of the amount of energy or the amount of residual energy.
  • the threshold value is selected such that the amount of energy still stored is sufficient for a last safe lifting of the pawl 4.
  • the motor vehicle lock 2 is preferably designed and set up such that the auxiliary drive 9 is then switched on and the main drive 10 is possibly switched off if the force of the main drive 10 is not sufficient to lift the pawl 4.
  • a greater lifting force can be applied to the pawl 4 with the auxiliary drive 9 than with the main drive 10. In this way, a higher lifting force can be exerted on the pawl 4 in normal operation. This makes lifting particularly safe in an emergency enables.
  • the main drive 10 and the auxiliary drive 9 can be designed such that the main drive 10 can lift the pawl 4 faster than the auxiliary drive 9.
  • an actuating element 24 is provided for lifting the pawl 4, which can in particular be firmly connected to the pawl 4.
  • the actuating element 24 and the pawl 4 preferably have a common axis of rotation.
  • Both the main drive 10 and the auxiliary drive 9 preferably act on the actuating element 24 to lift the pawl 4.
  • the main drive 10 and the auxiliary drive 9 can act together on the actuating element 24 to lift the pawl 4.
  • either the main drive 10 or the auxiliary drive 9 preferably acts on the actuating element 24 for lifting the pawl 4.
  • a gear 25 can be arranged between the shape memory arrangement 7 and the pawl 4.
  • a main transmission 26 can be arranged between the main drive 10 and the pawl 4.
  • a gear 25 is arranged between the shape memory arrangement 7 and the pawl 4 as well as a main gear 26 between the main drive 10 and the pawl 4.
  • the two gears 25, 26 have a common driven gear element.
  • the actuating element 24 is designed as a common driven gear element.
  • the drive train of the main drive 10 has a flexible traction means 26a, in particular a rope, via which the drive force is transmitted to a link 26b.
  • the flexible traction means 26a is preferably wound directly onto a shaft, in particular the motor shaft of the electric motor 11.
  • the drive force is transmitted from the link 26b to the actuating element 24 and thus the pawl 4 via a lever 24a which can be assigned to the actuating element 24 and which can be designed in particular as a wire ( Fig. 3 ).
  • the link 26b and the lever 24a are unidirectionally coupled to one another.
  • the unidirectional coupling decouples the main drive 10 when the pawl 4 is lifted with the auxiliary drive 9.
  • the drive train of the auxiliary drive 9 or shape memory drive 6 transmits the drive force from the restoring element 13 via a lever 25a to the actuating element 24.
  • the lever 25a and the actuating element are unidirectionally coupled to one another. The unidirectional coupling decouples the auxiliary drive 9 when the pawl 4 is lifted from the main drive 10.
  • the actuating element 24 and the pawl 4 are preferably firmly connected to one another via a wire, in particular the wire forming the lever 24a.
  • the restoring element 13 and the main transmission 25 are located in different levels of the motor vehicle lock 2. Further preferably, the locking elements 3, 3a, 4 lie in a further level of the motor vehicle lock 2. Here, the locking elements 3, 3a, 4 lie in one level directly on the rear plate 18.
  • the main gear 25 is arranged in a plane arranged above it.
  • the shape memory arrangement is arranged in a plane arranged above it. The gear 25 from the shape memory arrangement to the pawl is at least partially in the plane of the main gear 25.

Landscapes

  • Lock And Its Accessories (AREA)

Description

Die Erfindung betrifft eine Kraftfahrzeugschlossanordnung mit einem Kraftfahrzeugschloss nach dem Oberbegriff von Anspruch 1 und eine Kraftfahrzeugschlossanordnung mit einem Kraftfahrzeugschloss nach dem Oberbegriff von Anspruch 13.The invention relates to a motor vehicle lock arrangement with a motor vehicle lock according to the preamble of claim 1 and a motor vehicle lock arrangement with a motor vehicle lock according to the preamble of claim 13.

Kraftfahrzeugschlossanordnungen und Kraftfahrzeugschlösser sind aus dem Stand der Technik in verschiedenen Ausführungen bekannt.Motor vehicle lock arrangements and motor vehicle locks are known in various designs from the prior art.

In der DE 20 2013 007 862 U1 ist ein Kraftfahrzeugschloss mit den Schließelementen Schlossfalle und Schließelement beschrieben. Bei dem Kraftfahrzeugschloss hält die Sperrklinke die Schlossfalle in einer Schließstellung und kann mit einem bspw. als Elektromotor ausgebildeten Hauptantrieb zum normalbetriebsgemäßen Ausheben oder einem Hilfsantrieb zum notfallbedingten Ausheben ausgehoben werden. Der Hilfsantrieb wird durch eine Formgedächtnisanordnung mit mindestens einem Formgedächtniselement gebildet, durch dessen Gestaltänderung die Sperrklinke ausgehoben wird. Das Kraftfahrzeugschloss kann eine nicht näher beschriebene Rückstellvorrichtung zur manuellen oder automatischen Rückstellung der das Ausheben der Sperrklinke verursachenden Gestaltänderung des Formgedächtniselements aufweisen. Ein notfallbedingtes Ausheben stellt bei dem bekannten Kraftfahrzeugschloss insbesondere in Abhängigkeit von der Realisierung der Rückstellung einen Mehraufwand dar, der als Komforteinbuße zu sehen ist.In the DE 20 2013 007 862 U1 describes a motor vehicle lock with the locking elements lock latch and locking element. In the motor vehicle lock, the pawl holds the lock latch in a closed position and can be lifted out with a main drive, for example, designed as an electric motor, for normal operation lifting or an auxiliary drive for emergency lifting. The auxiliary drive is formed by a shape memory arrangement with at least one shape memory element, the change in shape of which releases the pawl. The motor vehicle lock can have a resetting device (not described in more detail) for manual or automatic resetting of the shape change of the shape memory element causing the pawl to be lifted out. In the known motor vehicle lock, an emergency-related lifting represents an additional effort, in particular depending on the implementation of the provision, which can be seen as a loss of comfort.

Der Erfindung liegt die Aufgabe zugrunde, die bekannte Kraftfahrzeugschlossanordnung derart auszugestalten und weiterzubilden, dass der mit der Funktion des notfallbedingten Aushebens der Sperrklinke verbundene Mehraufwand für den Benutzer reduziert wird.The invention is based on the object of designing and developing the known motor vehicle lock arrangement in such a way that the additional outlay for the user associated with the function of the emergency-related lifting of the pawl is reduced.

Die vorstehende Aufgabe wird bei einer Kraftfahrzeugschlossanordnung gemäß dem Oberbegriff von Anspruch 1 durch die Merkmale von Anspruch 1 gelöst.The above object is achieved in a motor vehicle lock arrangement according to the preamble of claim 1 by the features of claim 1.

Durch die Zugänglichkeit des Rückstellelements von Außerhalb des Kraftfahrzeugschlosses lässt sich die Rückstellung des Formgedächtniselements grundsätzlich mit geringem Aufwand bewerkstelligen. Dadurch lässt sich das Kraftfahrzeugschloss nach einem notfallbedingten Ausheben der Sperrklinke leicht in einen Grundzustand überführen.Due to the accessibility of the restoring element from outside the motor vehicle lock, the resetting of the shape memory element can be fundamentally accomplish with little effort. As a result, the motor vehicle lock can be easily converted into a basic state after an emergency lifting of the pawl.

Gemäß einer Weiterbildung der Erfindung gemäß Anspruch 2 ist das Rückstellelement nach Art eines Schiebers und/oder nach Art eines Hebels ausgebildet. Auf diese Weise lässt sich die Rückstellfunktion ganz besonders einfach verwirklichen. Die Rückstellkraft ist hierdurch besonders einfach in das Formgedächtniselement einleitbar. Zugleich lässt sich das Rückstellelement leicht so ausbilden, dass es vorschlagegemäß von außerhalb des Kraftfahrzeugschlosses zugänglich ist. Zudem kann auf diese Weise die Rückstellbewegung definiert geführt werden.According to a development of the invention according to claim 2, the restoring element is designed in the manner of a slide and / or in the manner of a lever. In this way, the reset function can be implemented particularly easily. The restoring force is thereby particularly easy to introduce into the shape memory element. At the same time, the reset element can easily be designed in such a way that, according to the proposal, it is accessible from outside the motor vehicle lock. In this way, the return movement can also be performed in a defined manner.

Bei einer Ausbildung der Kraftfahrzeugschlossanordnung nach Anspruch 3 kann die Rückstellung des Formgedächtniselements besonders einfach mit Hilfe eines Werkzeugs erfolgen.In a configuration of the motor vehicle lock arrangement according to claim 3, the resetting of the shape memory element can be carried out particularly easily with the aid of a tool.

Ein guter Schutz des Kraftfahrzeugschlosses vor Umwelteinflüssen bei einer gleichzeitig guten Zugänglichkeit von außen wird durch die Merkmale des Anspruchs 4 erreicht.Good protection of the motor vehicle lock against environmental influences with good accessibility from the outside is achieved by the features of claim 4.

Bei einer Ausbildung des Kraftfahrzeugschlosses gemäß Anspruch 10 kann eine besonders einfache und sichere Abschaltung des Formgedächtniselements nach dem Ausheben der Sperrklinke erreicht werden.In a design of the motor vehicle lock according to claim 10, a particularly simple and safe shutdown of the shape memory element can be achieved after lifting the pawl.

Gemäß einer weiteren Lehre, die nicht Gegenstand der Erfindung ist, wird die vorstehende Aufgabe bei einer Kraftfahrzeugschlossanordnung durch die folgende Merkmale gelöst.According to a further teaching, which is not the subject of the invention, the above object is achieved in a motor vehicle lock arrangement by the following features.

Durch das Vorsehen einer Steueranordnung, welche zum Ausheben der Sperrklinke vom Hauptantrieb auf einen Hilfsantrieb umschaltet, wenn die in einem Energiespeicher zum elektrischen Versorgen des Hauptantriebs gespeicherte Energie unter einen vorbestimmten Schwellwert fällt, kann auch bei einem bereits sehr stark entleerten Energiespeicher noch ein sicheres Ausheben der Sperrklinke durch den Hilfsantrieb sichergestellt werden. Es besteht nicht die Gefahr, dass zunächst mit dem Hauptantrieb versucht wird, die Sperrklinke auszuheben und danach für einen Aushebevorgang mit dem Hilfsantrieb nicht mehr genügend Energie bereitsteht. Ferner wird sichergestellt, dass ein Ausheben der Sperrklinke tatsächlich nur im Notfall erfolgt, so dass eine Rückstellung des Formgedächtniselements und der damit verbundene Mehraufwand für den Benutzer weitestgehend vermieden wird.By providing a control arrangement which switches over to release the pawl from the main drive to an auxiliary drive when the energy stored in an energy store for the electrical supply of the main drive falls below a predetermined threshold value, even in the case of an already very drained energy store, the lift can still be safely lifted out Pawl can be ensured by the auxiliary drive. There is no danger that the main drive will first attempt to lift the pawl and then there is no longer enough energy available for a lifting operation with the auxiliary drive. Furthermore, it is ensured that the pawl is actually only lifted in an emergency, so that a resetting of the shape memory element and the associated additional effort for the user are largely avoided.

Unter dem Begriff "Notfall" sind vorliegend diejenigen Situationen zusammengefasst, die das normalbetriebsgemäße Ausheben der Sperrklinke beeinträchtigen können. Dies kann beispielweise eine Crashsituation sein, in der zum Ausheben der Sperrklinke größere Kräfte als im Nonnalbetrieb aufgebracht werden müssen. Ein solcher Notfall kann beispielsweise dadurch erkannt werden, dass der Hauptantrieb zwar zum Ausheben der Sperrklinke angesteuert wurde, diese jedoch nicht ausgehoben hat. Alternativ kann ein solcher Notfall jedoch auch durch einen Beschleunigungssensor erfasst werden. Eine weiterer Notfall kann vorliegen, wenn nur noch eine geringe Energiemenge bereitsteht, so dass für den letzten Aushebevorgang sicherheitshalber direkt der Hilfsantrieb genutzt wird.In the present case, the term "emergency" summarizes those situations which can impair the normal operation of lifting the pawl. This can be a crash situation, for example, in which larger forces have to be applied to lift the pawl than in normal operation. Such an emergency can be recognized, for example, by the fact that the main drive was actuated to lift the pawl, but did not lift it. Alternatively, however, such an emergency can also be detected by an acceleration sensor. Another emergency can occur if only a small amount of energy is available, so that the auxiliary drive is used for the last lifting process for safety reasons.

Vorzugsweise wird als Maß für die Energiemenge die Versorgungsspannung herangezogen. Diese stellt eine besonders einfach und kostengünstig zu messende Größe dar, welche die Energiemenge sicher bestimmt. Auch diese Kraftfahrzeugschlossanordnung kann alle in dieser Anmeldung beschriebenen Merkmale einzeln oder in Kombination aufweisen. Insofern wird auf die gesamte Beschreibung der Anmeldung sowie die Ansprüche verwiesen.The supply voltage is preferably used as a measure of the amount of energy. This represents a particularly simple and inexpensive variable that reliably determines the amount of energy. This motor vehicle lock arrangement can also have all of the features described in this application, individually or in combination. In this respect, reference is made to the entire description of the application and the claims.

Ein Ausführungsbeispiel einer vorschlagsgemäßen Kraftfahrzeugschlossanordnung soll nachfolgend anhand einer Zeichnung beschrieben werden. In der Zeichnung zeigt

Fig. 1
a) eine vorschlagsgemäße Kraftfahrzeugschlossanordnung mit einem Kraftfahrzeugschlossgehäuse und b) die Kraftfahrzeugschlossanordnung ohne Kraftfahrzeugschlossgehäuse, jeweils in einer perspektivischen Darstellung,
Fig. 2
eine Aufsicht der Kraftfahrzeugschlossanordnung aus Fig. 1b in einer Schließstellung,
Fig. 3
eine Aufsicht der Kraftfahrzeugschlossanordnung aus Fig. 1b in einer Offenstellung, wobei die Sperrklinke mit dem Hauptantrieb ausgehoben ist,
Fig. 4
eine Aufsicht der Kraftfahrzeugschlossanordnung aus Fig. 1b in einer Offenstellung, wobei die Sperrklinke mit dem Hilfsantrieb ausgehoben ist.
An embodiment of a proposed motor vehicle lock arrangement will be described below with reference to a drawing. In the drawing shows
Fig. 1
a) a proposed motor vehicle lock arrangement with a motor vehicle lock housing and b) the motor vehicle lock arrangement without a motor vehicle lock housing, each in a perspective view,
Fig. 2
a supervision of the motor vehicle lock arrangement Fig. 1b in a closed position,
Fig. 3
a supervision of the motor vehicle lock arrangement Fig. 1b in an open position, the pawl with the main drive being lifted,
Fig. 4
a supervision of the motor vehicle lock arrangement Fig. 1b in an open position, the pawl being lifted with the auxiliary drive.

Fig. 1 zeigt eine vorschlagsgemäße Kraftfahrzeugschlossanordnung 1. Die Kraftfahrzeugschlossanordnung 1 weist ein Kraftfahrzeugschloss 2 zum Halten einer Kraftfahrzeugtür auf. Die in Rede stehende Kraftfahrzeugschlossanordnung 1 findet Anwendung bei allen Arten von Kraftfahrzeugtüren eines Kraftfahrzeugs. Der Begriff "Kraftfahrzeugtür" ist dabei weit zu verstehen. Er umfasst insbesondere Seitentüren, Hecktüren, Heckklappen, Heckdeckel oder Motorhauben. Fig. 1 shows a proposed motor vehicle lock arrangement 1. The motor vehicle lock arrangement 1 has a motor vehicle lock 2 for holding a motor vehicle door. The motor vehicle lock arrangement 1 in question is used for all types of motor vehicle doors of a motor vehicle. The term "motor vehicle door" is to be understood broadly. It particularly includes side doors, rear doors, tailgates, boot lids or bonnets.

Die Kraftfahrzeugschlossanordnung 1 weist ein erstes Schließelement 3, hier und vorzugsweise eine um eine Schlossfallenachse A schwenkbare Schlossfalle 3a, und ein als um eine Sperrklinkenachse B schwenkbare Sperrklinke 4 ausgestaltetes Schließelement 4 zum Halten des ersten Schließelements 3, 3a in mindestens einer Haltestellung auf. Im Ausführungsbeispiel weist das Kraftfahrzeugschloss 2 zwei Haltestellungen, nämlich eine Hauptschließstellung und eine Vorschließstellung, auf. Darüber hinaus weist hier und vorzugsweise die Kraftfahrzeugschlossanordnung 1 ein weiteres Schließelement, den Schließkeil 5, auf, der in üblicher Weise mit der Schlossfalle 3a zusammenwirkt.The motor vehicle lock arrangement 1 has a first locking element 3, here and preferably a locking latch 3a pivotable about a locking latch axis A, and a locking element 4 designed as a locking pawl 4 pivotable about a locking pawl axis B for holding the first locking element 3, 3a in at least one holding position. In the exemplary embodiment, the motor vehicle lock 2 has two holding positions, namely a main closing position and a pre-closing position. In addition, here and preferably the motor vehicle lock arrangement 1 has a further locking element, the locking wedge 5, which interacts in the usual way with the lock latch 3a.

In einer alternativen, hier nicht gezeigten Ausgestaltung kann die Kraftfahrzeugschlossanordnung 1 auch einen Schließriegel aufweisen, welcher zum Halten einer Kraftfahrzeugtür in das Kraftfahrzeugschloss 2 eintaucht und dort von der Sperrklinke gehalten wird. Dieser kann dann ein erstes Schließelement 3 der Kraftfahrzeugschlossanordnung 1 bilden. Bezüglich dieser Ausgestaltung wird auf die auf denselben Anmelder zurückgehende deutsche Gebrauchsmusteranmeldung DE 20 2015 104 003 verwiesen, welche insoweit zum Gegenstand dieser Anmeldung gemacht wird.In an alternative embodiment, not shown here, the motor vehicle lock arrangement 1 can also have a locking bolt which plunges into the motor vehicle lock 2 for holding a motor vehicle door and is held there by the pawl. This can then form a first locking element 3 of the motor vehicle lock arrangement 1. With regard to this configuration, the German utility model application based on the same applicant is used DE 20 2015 104 003 referenced, which is made the subject of this application.

Ferner weist die vorschlagsgemäße Kraftfahrzeugschlossanordnung 1 einen Formgedächtnisantrieb 6 zum Ausheben der Sperrklinke 4 auf. Der Formgedächtnisantrieb 6 weist eine Formgedächtnisanordnung 7 mit mindestens einem Formgedächtniselement 8 zum Ausheben der Sperrklinke 4 durch eine Gestaltänderung des Formgedächtniselements 8 auf. Die Fig. 4 zeigt die Kraftfahrzeugschlossanordnung 2 mit durch das Formgedächtniselement 8 ausgehobener Sperrklinke 4.Furthermore, the proposed motor vehicle lock arrangement 1 has a shape memory drive 6 for lifting the pawl 4. The shape memory drive 6 has a shape memory arrangement 7 with at least one shape memory element 8 for lifting out the pawl 4 by changing the shape of the shape memory element 8. The Fig. 4 shows the motor vehicle lock arrangement 2 with the pawl 4 lifted out by the shape memory element 8.

Hier und vorzugsweise ist der Formgedächtnisantrieb 8 als Hilfsantrieb 9 zum notfallbedingten Ausheben der Sperrklinke 4 ausgebildet. Zusätzlich kann er einen Hauptantrieb 10 zum normalbetriebsgemäßen Ausheben der Sperrklinke 4 aufweisen. Hier und vorzugsweise ist der Hauptantrieb 10 als Elektromotor 11 ausgebildet. Die Fig. 3 zeigt die Kraftfahrzeugschlossanordnung 1 mit durch den Hauptantrieb 10 ausgehobener Sperrklinke 4.Here and preferably, the shape memory drive 8 is designed as an auxiliary drive 9 for emergency lifting of the pawl 4. In addition, it can have a main drive 10 for lifting the pawl 4 in accordance with normal operation. Here and preferably the main drive 10 is designed as an electric motor 11. The Fig. 3 shows the motor vehicle lock arrangement 1 with the pawl 4 lifted by the main drive 10.

Darüber hinaus weist die vorschlagsgemäße Kraftfahrzeugschlossanordnung 1 eine Rückstellvorrichtung 12 zur manuellen Rückstellung der das Ausheben der Sperrklinke 4 verursachenden Gestaltänderung des Formgedächtniselements 8 auf. Die Rückstellvorrichtung weist ein Rückstellelement 13 auf, über das zwecks Rückstellung des Formgedächtniselements 8 eine Rückstellkraft in das Formgedächtniselement 8 eingeleitet werden kann. Hierfür ist das Rückstellelement 8 von außerhalb des Kraftfahrzeugschlosses 2 zugänglich.In addition, the proposed motor vehicle lock arrangement 1 has a resetting device 12 for manually resetting the shape change of the shape memory element 8 which causes the pawl 4 to be lifted out. The resetting device has a resetting element 13, via which a resetting force can be introduced into the shape memory element 8 for the purpose of resetting the shape memory element 8. For this purpose, the reset element 8 is accessible from outside the motor vehicle lock 2.

Ein manuelles Rückstellen des Formgedächtniselements 8 von außen wird durch die vorschlagsgemäße Lösung besonders einfach ermöglicht. Ein Öffnen und/oder Demontieren von Teilen des Kraftfahrzeugschlosses 2 ist nicht erforderlich. Es ergibt sich also ein kostengünstiges und zugleich leicht rückstellbares Kraftfahrzeugschloss 2. Zudem muss auch der Formgedächtnisantrieb 6 nicht stärker ausgelegt werden, um etwaige Rückstellkräfte beim Ausheben der Sperrklinke 4 zu überwinden, wie dies etwa beim Vorsehen einer dem Formgedächtniselement 8 zugeordneten Rückstellfeder notwendig wäre. Daher ist die Rückstellvorrichtung, insbesondere der Formgedächtnisantrieb insgesamt, vorzugsweise federlos ausgebildet.A manual resetting of the shape memory element 8 from the outside is made possible in a particularly simple manner by the proposed solution. It is not necessary to open and / or dismantle parts of the motor vehicle lock 2. This results in a cost-effective and at the same time easily resettable motor vehicle lock 2. In addition, the shape memory drive 6 does not have to be designed to be stronger in order to overcome any restoring forces when the pawl 4 is lifted, as would be necessary, for example, if a restoring spring associated with the shape memory element 8 were provided. Therefore, the restoring device, in particular the shape memory drive as a whole, is preferably designed without a spring.

Zusätzlich oder alternativ kann es dennoch vorgesehen sein, dass im Antriebsstrang zwischen Formgedächtnisanordnung 7 und Sperrklinke 4 Federn vorhanden sind, die in Summe eine Kraft auf die Formgedächtnisanordnung 7 in Rückstellrichtung ausüben, welche geringer ist, als die erforderliche Rückstellkraft zum Rückstellen der Formgedächtnisanordnung nach dem Abschalten desselben. Auf diese Weise kann sichergestellt werden, dass die Sperrklinke 4 beispielsweise bis zum manuellen Rückstellen ausgehoben bleibt und nicht sofort nach dem Abschalten der Formgedächtnisanordnung 7 wieder einfällt. Bei einer solchen Feder kann es sich um eine der Sperrklinke 4 zugeordnete Sperrklinkenfeder handeln. Vorzugsweise ist die Kraft, die die Sperrklinkenfeder auf die Formgedächtnisanordnung 7 ausübt, geringer, als die erforderliche Rückstellkraft zum Rückstellen der Formgedächtnisanordnung 7 nach dem Abschalten derselben.Additionally or alternatively, it can be provided that there are springs in the drive train between the shape memory arrangement 7 and the pawl 4, which in total exert a force on the shape memory arrangement 7 in the restoring direction which is less than the required restoring force to reset the shape memory arrangement after switching it off. In this way it can be ensured that the pawl 4 remains raised for example until it is manually reset and does not come back in immediately after the shape memory arrangement 7 has been switched off. Such a spring can be a pawl spring assigned to the pawl 4. The force which the pawl spring exerts on the shape memory arrangement 7 is preferably less than the restoring force required to reset the shape memory arrangement 7 after the latter has been switched off.

Interessant bei der vorschlagsgemäßen Lösung ist die Tatsache, dass sich bei einem notfallbedingten Ausheben der Sperrklinke 4 durch den Formgedächtnisantrieb 6 ein Halteeffekt ergibt, der dafür sorgt, dass die Sperrklinke 4 vom Formgedächtnisantrieb 6 permanent in ihrer ausgehobenen Stellung gehalten wird, bis die obige Rückstellung vollzogen wird. Dies insbesondere ohne weitere Bestromung des Formgedächtnisantriebs 6. Ein solcher Halteeffekt ist insbesondere bei einer Schwächung der Energieversorgung vorteilhaft, da auf ein mehrmaliges Ausheben der Sperrklinke 4 verzichtet werden kann.An interesting feature of the proposed solution is the fact that, in the event of an emergency lifting of the pawl 4 by the shape memory drive 6, there is a holding effect which ensures that the pawl 4 is permanently held in its raised position by the shape memory drive 6 until the above reset has been carried out becomes. This, in particular, without further energization of the shape memory drive 6. Such a holding effect is particularly advantageous when the energy supply is weakened, since the pawl 4 can be lifted out several times.

Hier und vorzugsweise ist das Rückstellelement 13 nach Art eines Schiebers, insbesondere eines Linearschiebers ausgebildet. Es wird in einer, insbesondere linearen, nicht gezeigten Führung geführt.Here and preferably, the reset element 13 is designed in the manner of a slide, in particular a linear slide. It is guided in a, in particular linear, guide, not shown.

Alternativ kann das Rückstellelement 13 auch nach Art eines Hebels, insbesondere eines Schwenkhebels, ausgebildet sein. Auch bei einer hebelartigen Ausbildung kann die Rückstellung des Formgedächtniselements 8 durch eine definierte Bewegung erfolgen.Alternatively, the reset element 13 can also be designed in the manner of a lever, in particular a pivoting lever. Even with a lever-like design, the resetting of the shape memory element 8 can be carried out by a defined movement.

Die manuelle Rückstellbewegung kann im Wesentlichen entgegen der Aushebebewegung durch das Formgedächtniselement 8 und/oder in gleicher Richtung mit der Aushebebewegung erfolgen. Ferner kann die Rückstellbewegung im Wesentlichen senkrecht zu der Aushebebewegung durch das Formgedächtniselement 8 erfolgen. Die Rückstellbewegung ist vorzugsweise diejenige Bewegung, mittels welcher manuell von außerhalb des Kraftfahrzeugschlosses 2 die Rückstellung des Formgedächtniselements 8 erfolgt.The manual return movement can essentially take place against the lifting movement by the shape memory element 8 and / or in the same direction with the lifting movement. Furthermore, the restoring movement can take place essentially perpendicular to the lifting movement by the shape memory element 8. The restoring movement is preferably the movement by means of which the shape memory element 8 is reset manually from outside the motor vehicle lock 2.

Das Rückstellelement 13 weist vorzugsweise eine Angriffsfläche 14 zum Einleiten der Rückstellkraft auf. Das Kraftfahrzeugschloss 2 im Übrigen weist vorzugsweise eine Abstützfläche 15 zur Abstützung der Rückstellkraft auf. Hier und vorzugsweise weisen die Angriffsfläche 14 und die Abstützfläche 15 in entgegengesetzte Richtungen. Es ist damit leicht möglich, über die Angriffsfläche 14 und die Abstützfläche 15 die Rückstellkraft mittels eines zangenartigen Werkzeugs einzuleiten. Es ergibt sich eine insgesamt besonders einfache Rückstellung des Formgedächtniselements 8.The restoring element 13 preferably has an engagement surface 14 for introducing the restoring force. The motor vehicle lock 2, moreover, preferably has a support surface 15 for supporting the restoring force. Here and preferably the engagement surface 14 and the support surface 15 point in opposite directions. It is thus easily possible to introduce the restoring force by means of a pliers-like tool via the engagement surface 14 and the support surface 15. An overall particularly simple resetting of the shape memory element 8 results.

Hier und vorzugsweise ist das Kraftfahrzeugschloss 2 mit einem Gehäuse 16 ausgestattet, das eine Gehäuseöffnung 17 aufweist. Vorzugsweise ist das Rückstellelement 13, insbesondere dessen Angriffsfläche 14, durch die Gehäuseöffnung 17 zugänglich. Zusätzlich oder alternativ kann das Rückstellelement 13, insbesondere seine Angriffsfläche 14, in die Gehäuseöffnung 17 ragen und/oder durch die Gehäuseöffnung hindurch ragen. Auf diese Weise kann das Innere des Kraftfahrzeugschlosses 2 durch das Gehäuse 16 geschützt werden, während das Rückstellelement 13 zur Rückstellung des Formgedächtniselements 8 leicht von außerhalb des Kraftfahrzeugschlosses 2 zugänglich ist. Vorzugsweise ist die Abstützfläche 15 am Gehäuse 16 ausgebildet. Dabei beträgt der Abstand zwischen der Abstützfläche 15 und der Angriffsfläche 14 vor der Rückstellung des Formgedächtniselements 8 vorzugsweise maximal 5 cm, weiter vorzugsweise maximal 3 cm, insbesondere maximal 2 cm.Here and preferably the motor vehicle lock 2 is equipped with a housing 16 which has a housing opening 17. The restoring element 13, in particular its engagement surface 14, is preferably accessible through the housing opening 17. Additionally or alternatively, the restoring element 13, in particular its engagement surface 14, can protrude into the housing opening 17 and / or can protrude through the housing opening. In this way, the interior of the motor vehicle lock 2 can be protected by the housing 16, while the restoring element 13 for restoring the shape memory element 8 is easily accessible from outside the motor vehicle lock 2. The support surface 15 is preferably formed on the housing 16. The distance between the support surface 15 and the engagement surface 14 before the resetting of the shape memory element 8 is preferably a maximum of 5 cm, further preferably a maximum of 3 cm, in particular a maximum of 2 cm.

Um die Rückstellung mit einem Werkzeug zu erleichtern, ist am Gehäuse, insbesondere durch die Gehäuseöffnung 17, ein Angriffsraum 17a zum Angreifen und Rückstellen des Rückstellelements 8 mit einem Werkzeug vorgesehen.In order to facilitate the resetting with a tool, an attack space 17a is provided on the housing, in particular through the housing opening 17, for engaging and resetting the resetting element 8 with a tool.

Darüber hinaus kann das Kraftfahrzeugschloss 2 ein Rückblech 18 aufweisen, das vorzugsweise aus einem Metallwerkstoff ausgebildet ist. Vorzugsweise ist das Rückblech 18 am Gehäuse 16 angeordnet oder bildet einen Teil des Gehäuses 16. Auf dem Rückblech 18 ist die Sperrklinke 4 gelagert. Darüber hinaus kann auch das erste Schließelement 3, insbesondere die Schlossfalle 3a, auf dem Rückblech 18 gelagert sein. Vorzugsweise bildet das Rückblech 18 zudem ein Einlaufmaul 19 für einen mit der Schlossfalle 3a zusammenwirkenden Schließkeil 5 aus. Zur Lagerung der Sperrklinke 4 und/oder der Schlossfalle 3a kann bzw. können ein oder mehrere Dorne 20a, 20b am Rückblech 18 angeordnet sein.In addition, the motor vehicle lock 2 can have a rear plate 18, which is preferably formed from a metal material. The rear plate 18 is preferably arranged on the housing 16 or forms part of the housing 16. The pawl 4 is mounted on the rear plate 18. In addition, the first closing element 3, in particular the lock latch 3a, can also be mounted on the rear plate 18. The rear plate 18 preferably also forms an inlet mouth 19 for a locking wedge 5 which interacts with the lock latch 3a. For storing the pawl 4 and / or the lock latch 3a can or one or more mandrels 20a, 20b can be arranged on the rear plate 18.

Vorzugsweise ist das Rückstellelement 13 auf der dem Rückblech 18 gegenüberliegenden Seite des Kraftfahrzeugschlosses 2 zugänglich. Das Rückstellelement 13 kann alternativ auch auf der Seite des Rückblechs 18 zugänglich sein. Ferner kann das Rückstellelement 13 an einer Stirnseite 16a des Kraftfahrzeugschlosses 2 zugänglich sein.The restoring element 13 is preferably accessible on the side of the motor vehicle lock 2 opposite the rear plate 18. The reset element 13 can alternatively also be accessible on the side of the rear plate 18. Furthermore, the restoring element 13 can be accessible on an end face 16a of the motor vehicle lock 2.

Um eine Rückstellung des Formgedächtniselements 8 auch bei in eine Kraftfahrzeugtür montiertem Kraftfahrzeugschloss 2 zu ermöglichen, ist das Rückstellelement 13 in diesem montiertem Zustand zur manuellen Rückstellung zugänglich. Vorzugsweise ist das Rückstellelement 13 bei in eine Kraftfahrzeugtür montiertem Kraftfahrzeugschloss 2 zur manuellen Rückstellung nur in geöffnetem Zustand der Kraftfahrzeugtür zugänglich. Darüber hinaus kann das Rückstellelement 13 von der Sperrklinke 4 derart entkoppelt sein, dass es das Formgedächtniselement 8 zwar rückstellen kann, dass die Sperrklinke 4 durch eine Verstellung des Rückstellelements 13 jedoch nicht ausgehoben werden kann. Dies ist unter dem Aspekt des Diebstahlschutzes vorteilhaft.In order to enable the shape memory element 8 to be reset even when the motor vehicle lock 2 is mounted in a motor vehicle door, the reset element 13 is accessible for manual reset in this mounted state. When the motor vehicle lock 2 is mounted in a motor vehicle door, the reset element 13 is preferably only accessible for manual resetting when the motor vehicle door is open. In addition, the reset element 13 can be decoupled from the pawl 4 in such a way that it can reset the shape memory element 8, but that the pawl 4 cannot be lifted by adjusting the reset element 13. This is advantageous in terms of theft protection.

Im dargestellten Ausführungsbeispiel und vorzugsweise weist das Rückstellelement 13 eine Umlenkführung zum Umlenken des Formgedächtniselements 8 auf. Hier ist das Formgedächtniselement 8, insbesondere U-förmig, in die Umlenkführung 21 des Rückstellelements 13 gelegt. Das Formgedächtniselement 8 ist durch das Umlegen um die Umlenkführung 21 am Rückstellelement 13 befestigt. Hierdurch lässt sich besonders einfach ein Toleranzausgleich zwischen den beiden Strängen 8a, 8b des Formgedächtniselements sicherstellen. Alternativ kann das mindestens eine Formgedächtniselement 8 auch in anderer Form am Rückstellelement 13 befestigt sein, dies insbesondere kraft- und/oder formschlüssig.In the exemplary embodiment shown and preferably, the reset element 13 has a deflection guide for deflecting the shape memory element 8. Here, the shape memory element 8, in particular U-shaped, is placed in the deflection guide 21 of the restoring element 13. The shape memory element 8 is fastened to the restoring element 13 by folding over the deflection guide 21. This makes it particularly easy to ensure tolerance compensation between the two strands 8a, 8b of the shape memory element. Alternatively, the at least one shape memory element 8 can also be attached to the restoring element 13 in a different shape, in particular in a non-positive and / or positive manner.

Vorzugsweise entspricht der Rückstellweg des Rückstellelements 13 dem Verstellweg des Rückstellelements 13 durch das Formgedächtniselement 8 beim Ausheben der Sperrklinke 4. Der Verstellweg und/oder der Rückstellweg sind vorzugsweise durch nicht gezeigte Anschläge begrenzt. Die Anschläge sind vorzugsweise am Gehäuse 16 ausgebildet, beispielsweise am Gehäusedeckel 16b. Hier und vorzugsweise weist das Gehäuse 16 ein obiges Rückblech 18, einen Gehäusekasten 16a sowie einen Gehäusedeckel 16b auf. Vorzugsweise ist das Rückblech 18 am Boden des Gehäusekastens 16c angeordnet. Die Anschläge können am Gehäuse 16, insbesondere am Gehäusedeckel 16b angeordnet sein.The reset path of the reset element 13 preferably corresponds to the adjustment path of the reset element 13 through the shape memory element 8 when the pawl 4 is lifted out. The adjustment path and / or the reset path are preferably limited by stops (not shown). The stops are preferably formed on the housing 16, for example on the housing cover 16b. Here and preferably, the housing 16 has an above rear plate 18, a housing box 16a and a housing cover 16b. The rear plate 18 is preferably arranged on the bottom of the housing box 16c. The stops can be arranged on the housing 16, in particular on the housing cover 16b.

Im Ausführungsbeispiel und vorzugsweise erstreckt sich das Formgedächtniselement 8 parallel zum Rückblech 18. Das Kraftfahrzeugschloss 2 kann insgesamt länglich ausgebildet sein, wobei sich das Formgedächtniselement 8 dann im Wesentlichen in Längsrichtung des Kraftfahrzeugschlosses 2 erstreckt.In the exemplary embodiment and preferably, the shape memory element 8 extends parallel to the rear plate 18. The motor vehicle lock 2 can be designed to be elongate overall, the shape memory element 8 then extending essentially in the longitudinal direction of the motor vehicle lock 2.

Vorzugsweise schneidet das Formgedächtniselement 8 die Verbindungslinie zwischen der Rotationsachse der Schlossfalle 3a und der Rotationsachse der Sperrklinke 4. Hierdurch kann eine möglichst lange Erstreckung des Formgedächtniselements 8 im Kraftfahrzeugschloss 2 erreicht werden. Gleichzeitig ergibt sich dadurch eine kompakte Bauform.The shape memory element 8 preferably intersects the connecting line between the axis of rotation of the lock latch 3a and the axis of rotation of the pawl 4. As a result, the shape memory element 8 in the motor vehicle lock 2 can be extended as long as possible. At the same time, this results in a compact design.

Hier und vorzugsweise ist der Formgedächtnisanordnung 7 eine Isolieranordnung zur Temperaturisolierung des Formgedächtniselements 8 zugeordnet. Damit wird auch bei unterschiedlichen Außentemperaturen ein reproduzierbarer Betrieb des Formgedächtnisantriebs 6 gewährleistet. Besonders bewährt hat sich eine Sol-Gel-Beschichtung des Formgedächtniselements 8 als Isolieranordnung. Darüber hinaus verfügt das Kraftfahrzeugschloss 2 vorzugsweise über eine elektrische Schaltanordnung 22, die mit dem Erreichen der Aushebestellung der Sperrklinke 4 das Formgedächtniselement 8 und/oder den Hauptantrieb 10 abschaltet. Hierzu kann eine Stellung der Sperrklinke 4, insbesondere eine Haltestellung und/oder eine Freigabestellung und/oder eine Stellung der Schlossfalle 3a, insbesondere die Offenstellung und/oder Hauptschließstellung und/oder die Vorrastschließstellung, mit einem Sensor 22a bzw. 22b erfasst werden. Auf diese Art und Weise wird eine Überlastung des Formgedächtniselements 8 vermieden. Der Sensor zum Erfassen der Sperrklinkenstellung 22a erfasst die Stellung der Sperrklinke 4 über einen Hebel 22c.Here and preferably, the shape memory arrangement 7 is assigned an insulation arrangement for temperature insulation of the shape memory element 8. This ensures reproducible operation of the shape memory drive 6 even at different outside temperatures. A sol-gel coating of the shape memory element 8 has proven particularly useful as an insulation arrangement. In addition, the motor vehicle lock 2 preferably has an electrical switching arrangement 22 which switches off the shape memory element 8 and / or the main drive 10 when the pawl 4 is in the raised position. For this purpose, a position of the pawl 4, in particular a stop position and / or a release position and / or a position of the lock latch 3a, in particular the open position and / or main closing position and / or the pre-latching position, can be detected with a sensor 22a or 22b. In this way, an overload of the shape memory element 8 is avoided. The sensor for detecting the pawl position 22a detects the position of the pawl 4 via a lever 22c.

Gemäß einer weiteren Lehre, die nicht Gegenstand der Erfindung ist, weist die Kraftfahrzeugschlossanordnung 1 eine Steueranordnung 23 auf, die auf den Betrieb des Formgedächtnisantriebs 6 hin ausgelegt ist. Die Steueranordnung 23 schaltet zum Ausheben der Sperrklinke 4 vom Hauptantrieb 10 auf einen Hilfsantrieb 9 um, wenn die in einem Energiespeicher zum elektrischen Versorgen des Hauptantriebs 10 gespeicherte Energiemenge unter einen vorbestimmten Schwellwert fällt.According to a further teaching, which is not the subject of the invention, the motor vehicle lock arrangement 1 has a control arrangement 23 which is designed for the operation of the shape memory drive 6. The control arrangement 23 switches over to release the pawl 4 from the main drive 10 to an auxiliary drive 9 when the amount of energy stored in an energy store for the electrical supply of the main drive 10 falls below a predetermined threshold value.

Die Kraftfahrzeugschlossanordnung 1 gemäß der weiteren Lehre kann auch alle zuvor beschriebenen Merkmale einzeln oder in Kombination aufweisen. Insofern wird auf die vorstehende Beschreibung verwiesen. Darüber hinaus können beide Kraftfahrzeugschlossanordnungen 1 alle nachfolgend beschriebenen Merkmale einzeln oder in Kombination aufweisen.The motor vehicle lock arrangement 1 according to the further teaching can also have all of the features described above individually or in combination. In this respect, reference is made to the above description. In addition, both motor vehicle lock arrangements 1 can have all of the features described below individually or in combination.

Der Energiespeicher kann die Fahrzeugbatterie und/oder eine Batterie und/oder ein Akkumulator und/oder ein Kondensator zum Betrieb des Kraftfahrzeugschlosses 2 sein. Insofern kann der Energiespeicher ein Netzwerk von EnergieSpeichern, insbesondere auch unterschiedlicher Art sein. Insbesondere kann das Netzwerk von Batteriespeichern auch einen dezidiert dem Kraftfahrzeugschloss 2 zugeordneten Energiespeicher aufweisen. Vorzugsweise ist dieser am oder im Kraftfahrzeugschloss 2 angeordnet. Bei dem Energiespeicher kann es sich aber auch um einen ausschließlich dem Formgedächtnisantrieb 6 zugeordneten Energiespeicher handeln.The energy store can be the vehicle battery and / or a battery and / or an accumulator and / or a capacitor for operating the motor vehicle lock 2. In this respect, the energy store can be a network of energy stores, in particular also of different types. In particular, the network of battery stores can also have an energy store specifically assigned to the motor vehicle lock 2. This is preferably arranged on or in the motor vehicle lock 2. However, the energy store can also be an energy store assigned exclusively to the shape memory drive 6.

Als Maß für die Energiemenge kann vorzugsweise die Versorgungsspannung herangezogen werden. Dies ermöglicht ein besonders einfaches und sicheres Bestimmen der Energiemenge bzw. der Restenergiemenge. Hier und vorzugsweise ist der Schwellwert derart gewählt, dass die noch gespeicherte Energiemenge für ein letztes sicheres Ausheben der Sperrklinke 4 ausreicht.The supply voltage can preferably be used as a measure of the amount of energy. This enables a particularly simple and reliable determination of the amount of energy or the amount of residual energy. Here and preferably, the threshold value is selected such that the amount of energy still stored is sufficient for a last safe lifting of the pawl 4.

Zusätzlich oder alternativ ist das Kraftfahrzeugschloss 2 vorzugsweise derart ausgebildet und eingerichtet, dass der Hilfsantrieb 9 dann zugeschaltet und ggf. der Hauptantrieb 10 abgeschaltet wird, wenn die Kraft des Hauptantriebs 10 zum Ausheben der Sperrklinke 4 nicht ausreicht.Additionally or alternatively, the motor vehicle lock 2 is preferably designed and set up such that the auxiliary drive 9 is then switched on and the main drive 10 is possibly switched off if the force of the main drive 10 is not sufficient to lift the pawl 4.

Weiter vorzugsweise ist mit dem Hilfsantrieb 9 eine größere Aushebekraft auf die Sperrklinke 4 aufbringbar, als mit dem Hauptantrieb 10. Hierdurch kann im Notfall auch eine höhere Aushebekraft als im Normalbetrieb auf die Sperrklinke 4 ausgeübt werden. Hierdurch wird ein besonders sicheres notfallbedingtes Ausheben ermöglicht. Ferner können der Hauptantrieb 10 und der Hilfsantrieb 9 derart ausgebildet sein, dass der Hauptantrieb 10 die Sperrklinke 4 schneller ausheben kann als der Hilfsantrieb 9.Further preferably, a greater lifting force can be applied to the pawl 4 with the auxiliary drive 9 than with the main drive 10. In this way, a higher lifting force can be exerted on the pawl 4 in normal operation. This makes lifting particularly safe in an emergency enables. Furthermore, the main drive 10 and the auxiliary drive 9 can be designed such that the main drive 10 can lift the pawl 4 faster than the auxiliary drive 9.

Hier und vorzugsweise ist ein Betätigungselement 24 zum Ausheben der Sperrklinke 4 vorgesehen, welches insbesondere mit der Sperrklinke 4 fest verbunden sein kann. Das Betätigungselement 24 und die Sperrklinke 4 weisen vorzugsweise eine gemeinsame Rotationsachse auf. Auf das Betätigungselement 24 wirken zum Ausheben der Sperrklinke 4 vorzugsweise sowohl der Hauptantrieb 10 als auch der Hilfsantrieb 9. Zum Ausheben der Sperrklinke 4 können der Hauptantrieb 10 und der Hilfsantrieb 9 gemeinsam auf das Betätigungselement 24 einwirken. Vorzugsweise wirkt jedoch entweder der Hauptantrieb 10 oder der Hilfsantrieb 9 auf das Betätigungselement 24 zum Ausheben der Sperrklinke 4 ein.Here and preferably, an actuating element 24 is provided for lifting the pawl 4, which can in particular be firmly connected to the pawl 4. The actuating element 24 and the pawl 4 preferably have a common axis of rotation. Both the main drive 10 and the auxiliary drive 9 preferably act on the actuating element 24 to lift the pawl 4. The main drive 10 and the auxiliary drive 9 can act together on the actuating element 24 to lift the pawl 4. However, either the main drive 10 or the auxiliary drive 9 preferably acts on the actuating element 24 for lifting the pawl 4.

Zwischen der Formgedächtnisanordnung 7 und der Sperrklinke 4 kann ein Getriebe 25 angeordnet sein. Alternativ oder zusätzlich kann zwischen dem Hauptantrieb 10 und der Sperrklinke 4 ein Hauptgetriebe 26 angeordnet sein.A gear 25 can be arranged between the shape memory arrangement 7 and the pawl 4. Alternatively or additionally, a main transmission 26 can be arranged between the main drive 10 and the pawl 4.

Hier und vorzugsweise ist sowohl zwischen der Formgedächtnisanordnung 7 und der Sperrklinke 4 ein Getriebe 25 als auch zwischen dem Hauptantrieb 10 und der Sperrklinke 4 ein Hauptgetriebe 26 angeordnet. Im Ausführungsbeispiel weisen die beiden Getriebe 25, 26 ein gemeinsames Abtriebsgetriebeelement auf. Hier und vorzugsweise ist wie hier das Betätigungselement 24 als gemeinsames Abtriebsgetriebeelement ausgebildet.Here and preferably, a gear 25 is arranged between the shape memory arrangement 7 and the pawl 4 as well as a main gear 26 between the main drive 10 and the pawl 4. In the exemplary embodiment, the two gears 25, 26 have a common driven gear element. Here and preferably, as here, the actuating element 24 is designed as a common driven gear element.

Der Antriebsstrang des Hauptantriebs 10 weist ein flexibles Zugmittel 26a, insbesondere ein Seil auf, über das die Antriebskraft auf eine Kulisse 26b übertragen wird. Hierzu wird das flexible Zugmittel 26a vorzugsweise direkt auf eine Welle, insbesondere die Motorwelle des Elektromotors 11 aufgewickelt. Von der Kulisse 26b wird die Antriebskraft über einen dem Betätigungselement 24 zuzuordnenden Hebel 24a, welcher insbesondere als Draht ausgebildet sein kann, auf das Betätigungselement 24 und damit die Sperrklinke 4 übertragen (Fig. 3).The drive train of the main drive 10 has a flexible traction means 26a, in particular a rope, via which the drive force is transmitted to a link 26b. For this purpose, the flexible traction means 26a is preferably wound directly onto a shaft, in particular the motor shaft of the electric motor 11. The drive force is transmitted from the link 26b to the actuating element 24 and thus the pawl 4 via a lever 24a which can be assigned to the actuating element 24 and which can be designed in particular as a wire ( Fig. 3 ).

Die Kulisse 26b und der Hebel 24a sind unidirektional miteinander gekoppelt. Durch die unidirektionale Kopplung wird die Entkopplung des Hauptantriebs 10 beim Ausheben der Sperrklinke 4 mit dem Hilfsantrieb 9 hergestellt.The link 26b and the lever 24a are unidirectionally coupled to one another. The unidirectional coupling decouples the main drive 10 when the pawl 4 is lifted with the auxiliary drive 9.

Der Antriebsstrang des Hilfsantriebs 9 bzw. Formgedächtnisantriebs 6 überträgt die Antriebskraft vom Rückstellelement 13 über einen Hebel 25a auf das Betätigungselement 24. Der Hebel 25a und das Betätigungselement sind unidirektional miteinander gekoppelt. Durch die unidirektionale Kopplung wird die Entkopplung des Hilfsantriebs 9 beim Ausheben der Sperrklinke 4 mit dem Hauptantrieb 10 hergestellt.The drive train of the auxiliary drive 9 or shape memory drive 6 transmits the drive force from the restoring element 13 via a lever 25a to the actuating element 24. The lever 25a and the actuating element are unidirectionally coupled to one another. The unidirectional coupling decouples the auxiliary drive 9 when the pawl 4 is lifted from the main drive 10.

Das Betätigungselement 24 und die Sperrklinke 4 sind bevorzugt über einen Draht, insbesondere den den Hebel 24a bildenden Draht, fest miteinander verbunden.The actuating element 24 and the pawl 4 are preferably firmly connected to one another via a wire, in particular the wire forming the lever 24a.

Das Rückstellelement 13 und das Hauptgetriebe 25 befinden sich in unterschiedlichen Ebenen des Kraftfahrzeugschlosses 2. Weiter vorzugsweise liegen die Schließelemente 3, 3a, 4 in einer weiteren Ebene des Kraftfahrzeugschlosses 2. Hier liegen die Schließelemente 3, 3a, 4 in einer Ebene direkt auf dem Rückblech 18. In einer darüber angeordneten Ebene ist das Hauptgetriebe 25 angeordnet. In einer darüber angeordneten Ebene ist die Formgedächtnisanordnung angeordnet. Das Getriebe 25 von der Formgedächtnisanordnung zur Sperrklinke befindet sich zumindest teilweise in der Ebene des Hauptgetriebes 25.The restoring element 13 and the main transmission 25 are located in different levels of the motor vehicle lock 2. Further preferably, the locking elements 3, 3a, 4 lie in a further level of the motor vehicle lock 2. Here, the locking elements 3, 3a, 4 lie in one level directly on the rear plate 18. The main gear 25 is arranged in a plane arranged above it. The shape memory arrangement is arranged in a plane arranged above it. The gear 25 from the shape memory arrangement to the pawl is at least partially in the plane of the main gear 25.

Claims (12)

  1. Motor vehicle lock arrangement comprising a motor vehicle lock (2), wherein the motor vehicle lock arrangement (1) has a first locking element (3, 3a), in particular a lock latch (3a), and a locking element, which is configured as a catch (4), for holding the first locking element (3, 3a) in at least one holding position, and also a shape memory drive (6) for lifting out the catch (4), wherein the shape memory drive (6) comprises a shape memory arrangement (7) having at least one shape memory element (8) for lifting out the catch (4) by means of a change in form of the shape memory element (8), wherein a resetting device (12) for the manual resetting of the change in form of the shape memory element (8), the change in form causing the catch (4) to be lifted out, is provided, characterized in that the resetting device (12) has a resetting element (13) via which a resetting force can be introduced into the shape memory element (8) for the manual resetting of the shape memory element (8), and in that the resetting element (8) is accessible for this purpose from outside the motor vehicle lock (2).
  2. Motor vehicle lock arrangement according to Claim 1, characterized in that the resetting element (13) is designed in the manner of a slide and/or in the manner of a lever.
  3. Motor vehicle lock arrangement according to Claim 1 or 2, characterized in that the resetting element (13) has an engagement surface (14) for the introduction of the resetting force, and the motor vehicle lock (2) furthermore has a supporting surface (15) for supporting the resetting force, preferably in that the engagement surface (14) and the supporting surface (15) face in opposite directions, furthermore preferably in that the resetting force can be introduced via the engagement surface (14) and the supporting surface (15) by means of a pincer-like tool.
  4. Motor vehicle lock arrangement according to one of the preceding claims, characterized in that the motor vehicle lock (2) has a housing (16) with a housing opening (17), and the resetting element (13), in particular the engagement surface (14), is accessible through the housing opening (17) and/or projects into the housing opening (17) and/or projects through the housing opening (17).
  5. Motor vehicle lock arrangement according to one of the preceding claims, characterized in that the motor vehicle lock (2) has a backplate (18) on which the catch (4) is mounted, preferably the resetting element (13) is accessible on that side of the motor vehicle lock (2) which is opposite the backplate (18).
  6. Motor vehicle lock arrangement according to one of the preceding claims, characterized in that the resetting element (13) is accessible for manual resetting when the motor vehicle lock (2) is mounted in a motor vehicle door.
  7. Motor vehicle lock arrangement according to one of the preceding claims, characterized in that the resetting element (13) has a deflecting guide (21) for deflecting the shape memory element (8), preferably in that the shape memory element (8) is placed, in particular in a U-shaped manner, around the deflecting guide (21) of the resetting element (13).
  8. Motor vehicle lock arrangement according to one of Claims 5 to 7, characterized in that the shape memory element (8) extends parallel to the backplate (18).
  9. Motor vehicle lock arrangement according to one of the preceding claims, characterized in that the shape memory arrangement (7) comprises an insulating arrangement for temperature insulation of the shape memory element (8), preferably in that the insulating arrangement is a sol-gel coating.
  10. Motor vehicle lock arrangement according to one of the preceding claims, characterized in that the motor lock arrangement (1) has a main drive (10) for the lifting out of the catch (4) in accordance with normal operation, and in that the shape memory drive (6) serves as an auxiliary drive (9) for lifting out the catch (4) in the event of an emergency, preferably in that the main drive (10) is an electric motor (11).
  11. Motor vehicle lock arrangement according to one of the preceding claims, characterized in that the motor vehicle lock (2) has an electric switching arrangement (22) which, when a lifting-out position of the catch (4) is reached, switches off the shape memory drive (6), in particular the shape memory element (8), and/or the main drive.
  12. Motor vehicle lock arrangement according to Claim 11, characterized in that a greater lifting-out force can be applied to the catch (4) with the auxiliary drive (9) than with the main drive (10).
EP16186317.0A 2015-09-03 2016-08-30 Motor vehicle lock Active EP3147433B1 (en)

Applications Claiming Priority (1)

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DE202015104678.2U DE202015104678U1 (en) 2015-09-03 2015-09-03 Motor vehicle lock

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EP3147433A2 EP3147433A2 (en) 2017-03-29
EP3147433A3 EP3147433A3 (en) 2017-08-09
EP3147433B1 true EP3147433B1 (en) 2020-05-27

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DE102017112791A1 (en) * 2017-06-09 2018-12-13 BROSE SCHLIEßSYSTEME GMBH & CO. KG Motor vehicle lock
DE102018120447A1 (en) * 2018-08-22 2020-02-27 Kiekert Ag Method for controlling a motor vehicle lock
DE102018125208A1 (en) * 2018-10-11 2020-04-16 Brose Schließsysteme GmbH & Co. Kommanditgesellschaft Procedure for operating an opening mechanism
DE102019115273A1 (en) * 2019-06-06 2020-12-10 Kiekert Aktiengesellschaft Motor vehicle lock
GB2604645A (en) * 2021-03-12 2022-09-14 Jaguar Land Rover Ltd Vehicle side door latch apparatus comprising a pulley-connected electrical release actuator

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EP3147433A3 (en) 2017-08-09
EP3147433A2 (en) 2017-03-29

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