EP3612695B1 - Lock for a motor vehicle - Google Patents

Lock for a motor vehicle Download PDF

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Publication number
EP3612695B1
EP3612695B1 EP18712075.3A EP18712075A EP3612695B1 EP 3612695 B1 EP3612695 B1 EP 3612695B1 EP 18712075 A EP18712075 A EP 18712075A EP 3612695 B1 EP3612695 B1 EP 3612695B1
Authority
EP
European Patent Office
Prior art keywords
ejector
lever
drive lever
locking
drive
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
EP18712075.3A
Other languages
German (de)
French (fr)
Other versions
EP3612695A1 (en
Inventor
Christian Sturm
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.)
Kiekert AG
Original Assignee
Kiekert AG
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Filing date
Publication date
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Publication of EP3612695A1 publication Critical patent/EP3612695A1/en
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Publication of EP3612695B1 publication Critical patent/EP3612695B1/en
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Classifications

    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B83/00—Vehicle locks specially adapted for particular types of wing or vehicle
    • E05B83/16—Locks for luggage compartments, car boot lids or car bonnets
    • E05B83/24—Locks for luggage compartments, car boot lids or car bonnets for car bonnets
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B81/00—Power-actuated vehicle locks
    • E05B81/12—Power-actuated vehicle locks characterised by the function or purpose of the powered actuators
    • E05B81/16—Power-actuated vehicle locks characterised by the function or purpose of the powered actuators operating on locking elements for locking or unlocking action
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B81/00—Power-actuated vehicle locks
    • E05B81/12—Power-actuated vehicle locks characterised by the function or purpose of the powered actuators
    • E05B81/20—Power-actuated vehicle locks characterised by the function or purpose of the powered actuators for assisting final closing or for initiating opening
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B85/00—Details of vehicle locks not provided for in groups E05B77/00 - E05B83/00
    • E05B85/20—Bolts or detents
    • E05B85/24—Bolts rotating about an axis
    • E05B85/26—Cooperation between bolts and detents
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B79/00—Mounting or connecting vehicle locks or parts thereof
    • E05B79/10—Connections between movable lock parts
    • E05B79/20—Connections between movable lock parts using flexible connections, e.g. Bowden cables
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B81/00—Power-actuated vehicle locks
    • E05B81/12—Power-actuated vehicle locks characterised by the function or purpose of the powered actuators
    • E05B81/14—Power-actuated vehicle locks characterised by the function or purpose of the powered actuators operating on bolt detents, e.g. for unlatching the bolt
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME RELATING TO HINGES OR OTHER SUSPENSION DEVICES FOR DOORS, WINDOWS OR WINGS AND DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION, CHECKS FOR WINGS AND WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05Y2900/00—Application of doors, windows, wings or fittings thereof
    • E05Y2900/50—Application of doors, windows, wings or fittings thereof for vehicles
    • E05Y2900/53—Application of doors, windows, wings or fittings thereof for vehicles characterised by the type of wing
    • E05Y2900/536—Hoods

Definitions

  • the invention relates to a lock for a motor vehicle, in particular a hood lock, having a locking mechanism with a rotary latch and at least one pawl, a locking bolt and an ejector that interacts with the locking bolt, the locking bolt being able to be brought into a lift-off position by means of the ejector and with at least one electric actuatable means for moving the locking bolt from the lift-off position into a closed position, a drive lever being provided for actuating the ejector and at least indirectly the rotary latch.
  • Locks or locking systems for motor vehicles are used wherever doors, flaps or movable components on motor vehicles have to be held in order to ensure safe driving of the motor vehicle. While the locking systems primarily serve to hold the movable components in their locked position, more and more convenience functions are coming to the fore today. Doors, flaps or hoods can be electrically operated, for example, during the opening and / or closing process, as a result of which opening of the locking system and / or closing of the movable component is carried out with electrical support.
  • a luggage compartment can be closed by means of a seal, so that it is sealed against water or dirt, for example.
  • a seal means that when the lock is closed, the locking mechanism, as a securing element, is opposed to a counterpressure.
  • Locking systems for electrically locking a lock are known from the prior art.
  • the German patent application discloses DE 10 2013 109 051 A1 an electrically operated lock that deals with minimizing gaps or joints in doors or flaps.
  • the lock known from this is movable, in particular in a pivotable manner. Following the locking of the locking mechanism, the lock is moved or pivoted overall by a drive in such a way that a gap between the door or flap and the body is minimized.
  • the drive provided for this purpose comprises an electric motor and a pivotable lever called an oscillator. By pivoting the oscillator by the electric motor, the lock is pivoted overall in such a way that the gap is minimized.
  • the lock housing is held by a pawl that is rotatably attached to the rocker.
  • the locking device known from this publication thus comprises a drive with which the lock as a whole and thus also the locking mechanism can be moved in such a way that a door gap or flap gap can be reduced after a door or flap has been closed.
  • the DE 10 2014 109 111 A1 discloses an electrically actuated hood lock, with a locking mechanism comprising a rotary latch and at least one pawl for locking the rotary latch and an electric drive for moving components of the locking device, wherein a control disc rotatable by the electric drive which rotates a plurality of components able to move, has become known.
  • a transmission lever By pivoting a transmission lever about its axis the position of the rotary latch can be raised and lowered in order to be able to change a gap between the hood and the body after locking.
  • the hood is placed on an ejector lever during the closing process, after which the hood is further lowered by an electric motor, the ejector lever being lowered.
  • the hood can be lifted at any time, as the rotary latch is not yet locked. There is therefore no risk of pinching your fingers. Only after reaching a gap of approx. 4-8 mm is the rotary latch pivoted into its latching position, so that the hood is pivoted into its closed position by means of an electrical drive of the rotary latch.
  • the design effort of the closing and the new requirements with regard to overcoming a sealing pressure pose new challenges for development.
  • a lock for a motor vehicle having a locking mechanism with a rotary latch and at least one pawl, a locking bolt and an ejector interacting with the locking bolt, the locking bolt being able to be brought into a lift-off position by means of the ejector and having at least one electrically operated means for moving the Locking bolt from the lifting position into a locking position, a drive lever for actuating the ejector and at least indirectly the rotary latch being provided.
  • the invention is based on the technical problem of further developing such a motor vehicle lock in such a way that a sufficient stroke can be made available for rapid lowering and, at the same time, a sufficient force can be made possible for the lock to be pulled shut against the force of a seal.
  • a lock for a motor vehicle having a locking mechanism with a rotary latch and at least one pawl, a locking bolt and an ejector that interacts with the locking bolt
  • the locking bolt can be brought into a lift-off position by means of the ejector and with at least one electrically actuatable means for moving the locking bolt from the lift-off position into a closed position
  • a drive lever being provided and which can be actuated by means of the drive lever of the ejector and at least indirectly the rotary latch
  • the at least one electrically actuated means (21) comprises a closing drive for actuating the drive lever (5), wherein according to the invention a closing lever (7) is provided and that the drive lever (5) alternately for transferring the locking bolt (11) from the lifting position (A) into a safety position sition (S) interacts with the ejector (6) and to transfer the locking bolt (11) from the locking position (S)
  • the design of a kinematic drive system now creates the possibility of safely transferring the locking bolt from the lift-off position into a closed position.
  • the drive lever first acts on the ejector and moves the ejector at least in certain areas in order to then interact at least indirectly with the rotary latch and the To transfer rotary latch into the closed position. Due to the alternating interaction between the drive lever, ejector and rotary latch, it is possible to make the engagement relationships between the drive lever, ejector and rotary latch adjustable.
  • the setting of the engagement conditions can be configured to be adjustable via different ratios between the drive lever and ejector and drive lever and rotary latch, so that the movements and in particular the forces introduced into the kinematics can be adapted to the circumstances of the lowering and sealing, which is described in more detail below .
  • Hood locks are preferably used as locking systems for motor vehicles. However, it is also conceivable to use the lock according to the invention for flaps, covers, sliding doors or side doors.
  • the motor vehicle locks covered by the invention are used where electrical actuation, that is to say electrically assisted closing and / or opening, is to be made possible.
  • All these locking systems have in common a locking mechanism with a rotary latch and at least one pawl, the rotary latch being able to be held in a locked position by means of the pawl.
  • Single-stage locking mechanisms consisting of a preliminary detent and a main detent as well as systems with one or two locking pawls are used.
  • the invention is preferably directed to a locking mechanism with a main locking position and a locking pawl, although this is not restrictive.
  • the locking mechanism interacts with a locking bolt.
  • the locking bolt can be attached to the motor vehicle body or, for example, can be mounted on a flap or hood. If the locking system is used, for example, in the area of a hood, the locking bolts or locking bolts are preferably mounted on the hood. The hood will then closed by moving the hood in the direction of the locking system and can be placed on an ejector.
  • the ejector is part of the motor vehicle locking system and interacts with the locking bolt, the locking bolt being able to be brought into a lift-off position by means of the ejector.
  • the lift-off position is the position in which the hood, for example, rests on the ejector and is held in the lift-off position by the ejector.
  • the ejector is preferably spring-loaded. After opening the locking mechanism and thus releasing the locking bolt, the locking bolt can be moved into the lift-off position by means of the ejector and in particular by the force of the spring acting on the ejector.
  • the lock has an electrically actuatable means for moving the locking bolt from the lifting position into a locking position.
  • the locking position is determined by the fact that the locking bolt and thus the movable component can be held in a secured position on the motor vehicle.
  • the hood, door and / or flap is closed.
  • the locking bolt is held in the locked ratchet and is preferably in a main locking position.
  • a drive lever can be brought into engagement with the ejector in order to transfer the locking bolt from the lifting position into the locking position.
  • the drive lever can be actuated electrically and is able to move the ejector and thus the locking bolt into the safety position against the force of the spring. Only when the locking position is reached, in which jamming can be prevented, does the drive lever interact with a closing lever, so that the locking bolt can be transferred from the locking position into the locking position.
  • a closing lever is provided and the drive lever interacts alternately with the ejector to transfer the locking bolt from the lift-off position into a locking position and with the closing lever to transfer the locking bolt from the locking position into the locking position.
  • the at least one electrically actuatable means comprises a closing drive for actuating the drive lever.
  • a separate closing drive enables large forces to be introduced into the drive lever.
  • different force ratios are required during the lowering, i.e. in the phase from the transfer of the locking bolt from the lifting position to the safety position, here, however, a fast movement of the locking bolt can be achieved with a small translation, whereas large ones during the closing by means of the closing drive Forces for a high translation can be made available.
  • the closing drive has a Bowden cable, wherein the Bowden cable can be brought into engagement with the drive lever.
  • the use of a closing drive in combination with a Bowden cable creates the possibility of arranging the closing drive at a distance from the locking system, which in turn has an advantageous effect on the installation conditions of the lock.
  • the drive lever is pivotably mounted in a lock case
  • a further variant embodiment of the invention results.
  • the number of components belonging to the kinematics can be reduced and the engagement relationships between the drive lever, ejector and closing drive can be set in an advantageous manner.
  • the connection to the lock case which is preferably made from sheet steel, ensures that the drive lever is securely supported.
  • the ejector can also be pivoted in the lock case.
  • the lever ratios and thus the transmission ratio between the drive lever and the ejector can be easily adjusted.
  • the engagement conditions between the drive lever and the ejector can be set.
  • the drive lever is preferably received in the lock case in a pivotable manner between the bearing point and the first bearing surface of the ejector.
  • the ejector can have a second support surface in which the drive lever engages by means of a driver.
  • the second support surface is arranged between the bearing point of the ejector and the bearing point of the drive lever.
  • the transmission ratio on the ejector can thus be set by means of a pivoting movement of the drive lever and the engagement of the drive lever via the driver on the second contact surface.
  • the drive lever By means of a guide in the closing lever, the drive lever can be moved at least in some areas independently of a movement of the closing lever.
  • the guide in the closing lever can act as a storage for the closing lever in the lock. This means that the number of components in the lock can be reduced.
  • the ejector can have a guide pin for the closing lever, so that the closing lever can be supported and guided in areas in the lock at least by the ejector and the drive lever.
  • One embodiment of the invention is obtained when the ejector and the closing lever have different transmission ratios by means of the drive lever are movable.
  • the arrangement of the drive lever between the bearing point of the ejector and the area of engagement of the locking bolt on the ejector enables a small transmission ratio of the drive lever to the ejector.
  • a high gear ratio can be introduced into the closing lever by a point of application of the drive lever on the closing lever, which is further spaced from an axis of rotation of the drive lever than the distance between the bearing point of the drive lever and the point of engagement on the ejector.
  • a high force is available for closing in the kinematics and for moving the locking bolt into a closed position, in particular against the force of a seal.
  • the transmission ratio can be adjusted to the force and torque ratios required to close the lock.
  • the ejector and the closing lever can be moved by means of the drive lever with different transmission ratios, the drive lever performing a stroke of preferably one third of its actuating path during the movement of the ejector and a stroke of preferably two thirds of its actuating path during the movement of the closing lever, and wherein the locking bolt performs a stroke of preferably less than 25 mm and even more preferably 18 mm while moving into the safety position and the locking bolt performs a stroke of preferably less than 10 mm and even more preferably 6 mm while moving into the main detent position.
  • the preferred but not exclusively restrictive selection of the transmission ratio allows the locking bolt to be moved quickly during passive lowering, whereas a large closing force is available during active closing to close the hood or sliding door, for example, against the resistance of a seal.
  • the actuation paths of the drive lever mentioned by way of example are of course not to be understood as limiting.
  • the conditions can change depending on the structural conditions and area of application of the lock, in particular the hood lock.
  • the lever ratios and transmission ratios are preferably to be selected so that a sufficient stroke of the locking bolt can take place to move it into the locking position and at the same time an increased force is available to pull it shut against the sealing pressure.
  • the ejector can be moved with a low gear ratio while the locking bolt is being moved from the lift-off position to the locking position and the closing lever can be moved with a high gear ratio while the locking bolt is being moved from the locking position to the locking position.
  • the force of the hood acts via the locking bolt on the lock and in particular the ejector, so that the closing movement can be supported by the additional load.
  • a closing which can also be referred to as passive lowering
  • passive lowering can take place with low forces and a relatively high speed.
  • high closing forces must be introduced into the locking bolt.
  • a high gear ratio during active closing means that high forces can be generated on the locking bolt.
  • the small translation during passive lowering means that a lot of stroke is generated on the locking bolt with a small stroke of the drive Bowden cable.
  • a method for closing an electrically actuatable lock in which an ejector is first actuated by means of the drive lever by means of a drive lever mounted pivotably in a lock case in such a way that a locking bolt is transferred from a lifting position to a locking position and in which a closing lever is then moved by means of the drive lever in such a way that the locking bolt is transferred from the locking position to a locking position.
  • a first lowering kinematics with the aid of an ejector and a subsequent closing by means of a closing lever, different force relationships can be provided.
  • the method can be adapted to the different requirements during the closing process.
  • a motor vehicle lock 1 is shown in certain areas.
  • the lock 1 comprises a lock case, a rotary latch 3, a pawl 4, a drive lever 5, an ejector 6, a closing lever 7, a catch hook 8 and two electrical actuating means in the form of miniature drives 9, 10.
  • a locking bolt 11 lies on the ejector 6 on, whereby the lifting position of the lock can be determined.
  • Rotary latch 3 and pawl 4 form the locking mechanism, with the pawl 4 being able to be locked into the rotary latch 3 and in particular into an extension 12.
  • the extension 12 engages in a hook-shaped contour 13 of the pawl 4.
  • the pawl 4 is preloaded in the counterclockwise direction by means of a spring and rests against a stop 14 in the lock case 2, for example.
  • the pawl 3 can be moved clockwise in the direction of the arrow P1.
  • the actuating means can be, for example, a linear small drive which can pivot the pawl 4 clockwise and thus move it into a position in which the pawl 4 disengages from the rotary latch 3.
  • the ejector 6 is received in the lock case 2 so as to be pivotable about an axis 15.
  • the ejector 6 is biased clockwise by the force F F of a spring, not shown.
  • the spring force F F holds the ejector 6 in the in the Figure 1 position shown, so that the locking bolt 11 and consequently, for example, an engine hood can be held in the lift-off position.
  • the locking bolt 11 is out of engagement with the rotary latch 3 and rests loosely on the ejector 6 and the rotary latch 3.
  • the ejector 6 has a first contact surface 16 and a second contact surface 17.
  • the locking bolt 11 rests on the first contact surface 16, which can be formed, for example, from a fold on the ejector 6.
  • the drive lever 5 acts on the second contact surface 17.
  • the ejector can be manufactured, for example, as a stamped sheet metal part from steel, with the contact surfaces 16, 17 being able to be present as folded edges, for example.
  • the drive lever 5 acts with a driver 18 on the ejector.
  • the drive lever 5 is in turn received in the lock case 2 so as to be pivotable about the axis 19.
  • the drive lever 5 also has a bearing, drive and guide pin 20.
  • the pin 20 serves on the one hand to support the closing lever 7, to drive the closing lever 7 and at the same time serves as a guide pin 20 for the drive lever 5.
  • the drive lever 5 is actuated, for example, by means of a closing drive 21 and, for example, by means of a Bowden cable 22, shown only in dashed lines.
  • a force F B can be introduced into the drive lever 5 by the Bowden cable 22.
  • the drive lever is thus moved clockwise around the axis 19 by the closing drive 21.
  • the closing lever 7 has a guide groove 23 in which the pin 20 can be guided.
  • the closing lever 7 can in turn rest against a bolt 24 on the ejector 6 and can thus be safely guided in the lock 1.
  • the closing lever 7 has a recess 25 which can be brought into engagement with the extension 12 of the rotary latch 3 in a form-fitting manner.
  • the catch hook 8 can be brought into engagement with the locking bolt 11.
  • the catch hook 8 is preferably spring-loaded in the direction of the locking bolt 11 and would engage in the locking bolt 11 without the electrical adjusting means 9.
  • the locking bolt 11 is preferably designed as a bracket, so that the catch hook 8 can engage in the locking bolt 11.
  • the catch hook 8 has been moved by the adjusting means 9 in the direction of the arrow P2 and, in particular, has been pivoted clockwise in the direction of the arrow P2.
  • the catch hook can be pivotably received in the lock case 2 or in a part of the lock case 2 (not shown).
  • the use of the electrical adjusting means 9 creates the possibility of opening the hood without manual intervention, that is to say automatically.
  • the locking bolt 11 rests on the rotary latch 3 and the ejector 6, the locking bolt 11 being held in the lifting position A by the ejector 6 and partly also by the counterclockwise spring-loaded rotary latch 3.
  • the drive lever 5 is in its starting position.
  • the backup position S is reproduced.
  • the drive lever 5 was by the closing drive 21 and in particular by the Bowden cable 22 pivoted clockwise.
  • the ejector 6 was pivoted counterclockwise about its axis 15, so that the locking bolt 11 and in particular the locking bolt 11 moved into the locking position S in combination with a load of a hood.
  • the pivoting movement of the ejector 6 simultaneously causes the rotary latch 3 to be pivoted clockwise around the axis 26 by the locking bolt 11, so that a cylinder bolt 27 comes into the engagement area of the recess 25 of the closing lever 7.
  • the rotary latch 3 engages positively with the locking bolt 11 and the closing lever 7 engages the bolt 27.
  • the pin 20 reaches the end of the guide groove 23, whereby the guide pin 20 is able to apply a force to transmit the closing lever 7.
  • the Figure 4 shows the main locking position HR or locking position HR of the locking mechanism in which the locking bolt 11 is in the locking position.
  • the rotary latch 3 engages with the pawl 4 so that the locking mechanism is closed and the locking bolt 11 is secured in its position.
  • the closed position HR was achieved in that the drive lever 5 was pivoted further clockwise by the force FB of the closing drive 21. As a result of this movement, the pin 20 moves the rotary latch 3 into the closed position HR.
  • a transmission ratio is provided by the drive lever and in particular the engagement conditions of the drive lever 5 on the ejector 6, with which a rapid, that is to say rapid lowering of the locking bolt 11 is possible.
  • the drive lever After reaching the securing position S, the drive lever primarily interacts with the closing lever 7, which results in a greater transmission ratio and a large force for closing the catch or for moving the locking bolt 11 into the main detent position HR Is available.
  • the combination, and in particular the interaction of the drive lever 5, ejector 6 and closing lever 7, can guarantee a safe door, hood or flap that is moved by the lock according to the invention, in particular to meet the requirements of the tightness.

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  • Lock And Its Accessories (AREA)

Description

Die Erfindung betrifft ein Schloss für ein Kraftfahrzeug, insbesondere ein Haubenschloss, aufweisend ein Gesperre mit einer Drehfalle und mindestens einer Sperrklinke, einem Schließbolzen und einem mit dem Schließbolzen zusammenwirkenden Auswerfer, wobei der Schließbolzen mittels des Auswerfers in eine Abhebeposition bringbar ist und mit zumindest einem elektrisch betätigbaren Mittel zum Bewegen des Schließbolzens aus der Abhebeposition in eine Schließposition, wobei ein Antriebshebel zur Betätigung des Auswerfers und zumindest mittelbar der Drehfalle vorgesehen ist.The invention relates to a lock for a motor vehicle, in particular a hood lock, having a locking mechanism with a rotary latch and at least one pawl, a locking bolt and an ejector that interacts with the locking bolt, the locking bolt being able to be brought into a lift-off position by means of the ejector and with at least one electric actuatable means for moving the locking bolt from the lift-off position into a closed position, a drive lever being provided for actuating the ejector and at least indirectly the rotary latch.

Schlösser oder Schließsysteme für Kraftfahrzeuge werden dort eingesetzt, wo Türen, Klappen oder bewegbare Bauteile an Kraftfahrzeugen gehalten werden müssen, um ein sicheres Führen des Kraftfahrzeuges zu gewährleisten. Dienen die Schließsysteme primär dazu, die bewegbaren Bauteile in ihrer Schließposition zu halten, so treten heute mehr und mehr Komfortfunktionen in den Vordergrund. Dabei können Türen, Klappen oder Hauben beispielsweise während des Offnungs- und/oder Schließvorgangs elektrisch betätigt werden, wodurch ein öffnen des Schließsystems und/oder ein Schließen des beweglichen Bauteils elektrisch unterstützt vorgenommen wird.Locks or locking systems for motor vehicles are used wherever doors, flaps or movable components on motor vehicles have to be held in order to ensure safe driving of the motor vehicle. While the locking systems primarily serve to hold the movable components in their locked position, more and more convenience functions are coming to the fore today. Doors, flaps or hoods can be electrically operated, for example, during the opening and / or closing process, as a result of which opening of the locking system and / or closing of the movable component is carried out with electrical support.

Neben den Komforteigenschaften elektrisch betätigter Schließsysteme ändern sich die Bedien- und Nutzungseigenschaften von Kraftfahrzeugen zum Beispiel dann, wenn Kraftfahrzeuge zum Beispiel mit elektrischen Antrieben ausgestattet sind. Gibt es derzeit wenige Kraftfahrzeuge, die einen Gepäckraum zum Beispiel unter einer Fronthaube angeordnet haben, so kommen im Zuge des Trends zu Fahrzeugen mit elektrischem Antrieb mehr und mehr dazu, dass auch der sich ergebende Freiraum als Gepäckraum nutzbar wird. Ein Gepäckraum ist dabei mittels einer Dichtung verschließbar, so dass eine Dichtheit zum Beispiel gegen Wasser oder Verschmutzungen gegeben ist. Eine Dichtung bedingt dabei, dass beim Schließen des Schlosses dem Gesperre als sicherndes Element ein Gegendruck entgegensteht. Schließsysteme zum elektrischen Schließen eines Schlosses sind aus dem Stand der Technik bekannt geworden.In addition to the comfort properties of electrically operated locking systems, the operating and usage properties of motor vehicles change, for example, when motor vehicles are equipped with electric drives, for example. If there are currently few motor vehicles that have a luggage compartment, for example under a front hood, the trend towards vehicles with electric drive is increasingly causing the resulting free space to be used as luggage compartment. A luggage compartment can be closed by means of a seal, so that it is sealed against water or dirt, for example. A seal means that when the lock is closed, the locking mechanism, as a securing element, is opposed to a counterpressure. Locking systems for electrically locking a lock are known from the prior art.

So offenbart die deutsche Patentanmeldung DE 10 2013 109 051 A1 ein elektrisch betätigbares Schloss, das sich mit einer Minimierung von Spalten bzw. Fugen bei Türen oder Klappen befasst. Das hieraus bekannte Schloss ist beweglich, und zwar insbesondere schwenkbar gelagert. Im Anschluss an ein Verrasten des Gesperres wird das Schloss durch einen Antrieb insgesamt so bewegt bzw. verschwenkt, dass ein Spalt zwischen Tür bzw. Klappe und Karosserie minimiert wird. Der dafür vorgesehene Antrieb umfasst einen Elektromotor und einen verschwenkbaren Hebel, der Schwinger genannt wird. Durch Verschwenken der Schwinger durch den Elektromotor wird das Schloss insgesamt so verschwenkt, dass der Spalt minimiert wird. Dabei wird das Schlossgehäuse durch eine Klinke gehalten, die an der Schwinge drehbar angebracht ist. Die aus dieser Druckschrift bekannte Schließvorrichtung umfasst somit einen Antrieb, mit dem das Schloss insgesamt und damit auch das Gesperre so bewegt werden kann, dass ein Türspalt oder Klappenspalt im Anschluss an ein Schließen einer Tür bzw. Klappe verkleinert werden kann.So the German patent application discloses DE 10 2013 109 051 A1 an electrically operated lock that deals with minimizing gaps or joints in doors or flaps. The lock known from this is movable, in particular in a pivotable manner. Following the locking of the locking mechanism, the lock is moved or pivoted overall by a drive in such a way that a gap between the door or flap and the body is minimized. The drive provided for this purpose comprises an electric motor and a pivotable lever called an oscillator. By pivoting the oscillator by the electric motor, the lock is pivoted overall in such a way that the gap is minimized. The lock housing is held by a pawl that is rotatably attached to the rocker. The locking device known from this publication thus comprises a drive with which the lock as a whole and thus also the locking mechanism can be moved in such a way that a door gap or flap gap can be reduced after a door or flap has been closed.

Die DE 10 2014 109 111 A1 offenbart ein elektrisch betätigbares Haubenschloss, mit einem Gesperre umfassend eine Drehfalle und wenigstens eine Sperrklinke für ein Verrasten der Drehfalle und einen elektrischen Antrieb für ein Bewegen von Bauteilen der Schließvorrichtung, wobei eine durch den elektrischen Antrieb drehbare Steuerscheibe, die durch eine Drehbewegung eine Mehrzahl von Bauteilen zu bewegen vermag, bekannt geworden ist. Durch ein Verschwenken eines Übertragungshebels um seine Achse kann die Position der Drehfalle angehoben und gesenkt werden, um so im Anschluss an ein Verrasten einen Spalt zwischen der Haube und der Karosserie verändern zu können. Um ein Einklemmen während des Schließens zu verhindern, wird die Haube während des Schließvorgangs auf einen Auswerferhebel aufgelegt, wonach die Haube elektromotorisch weiter abgesenkt, wobei der Auswerferhebel abgesenkt wird. In dieser Phase kann die Haube jederzeit angehoben werden, da die Drehfalle noch nicht verrastet ist. Es besteht daher keine Einklemmgefahr für die Finger. Erst nach einem Erreichen eines Spalts von ca. 4-8 mm wird die Drehfalle in ihre Raststellung verschwenkt, so dass die Haube mittels eines elektrischen Antreibens der Drehfalle in ihre Schließposition verschwenkt wird. Einerseits der konstruktive Aufwand des Zuziehens und die neuen Anforderungen in Bezug auf die Überwindung eines Dichtungsdrucks stellen neue Aufgaben an die Entwicklung.The DE 10 2014 109 111 A1 discloses an electrically actuated hood lock, with a locking mechanism comprising a rotary latch and at least one pawl for locking the rotary latch and an electric drive for moving components of the locking device, wherein a control disc rotatable by the electric drive which rotates a plurality of components able to move, has become known. By pivoting a transmission lever about its axis the position of the rotary latch can be raised and lowered in order to be able to change a gap between the hood and the body after locking. In order to prevent jamming during the closing process, the hood is placed on an ejector lever during the closing process, after which the hood is further lowered by an electric motor, the ejector lever being lowered. In this phase, the hood can be lifted at any time, as the rotary latch is not yet locked. There is therefore no risk of pinching your fingers. Only after reaching a gap of approx. 4-8 mm is the rotary latch pivoted into its latching position, so that the hood is pivoted into its closed position by means of an electrical drive of the rotary latch. On the one hand, the design effort of the closing and the new requirements with regard to overcoming a sealing pressure pose new challenges for development.

Aus der DE 10 2014 003 737 A1 ist ein Schloss für ein Kraftfahrzeug bekannt, aufweisend ein Gesperre mit einer Drehfalle und mindestens einer Sperrklinke, einem Schließbolzen und einem mit dem Schließbolzen zusammenwirkenden Auswerfer, wobei der Schließbolzen mittels des Auswerfers in eine Abhebeposition bringbar ist und mit zumindest einem elektrisch betätigbaren Mittel zum Bewegen des Schließbolzens aus der Abhebeposition in eine Schließposition, wobei ein Antriebshebel zur Betätigung des Auswerfers und zumindest mittelbar der Drehfalle vorgesehen ist. Hier setzt die Erfindung an.From the DE 10 2014 003 737 A1 a lock for a motor vehicle is known, having a locking mechanism with a rotary latch and at least one pawl, a locking bolt and an ejector interacting with the locking bolt, the locking bolt being able to be brought into a lift-off position by means of the ejector and having at least one electrically operated means for moving the Locking bolt from the lifting position into a locking position, a drive lever for actuating the ejector and at least indirectly the rotary latch being provided. This is where the invention comes in.

Der Erfindung liegt das technische Problem zugrunde, ein derartiges Kraftfahrzeugschloss so weiter zu entwickeln, dass ein ausreichender Hub für ein zügiges Absenken zur Verfügung gestellt werden kann und gleichzeitig eine ausreichende Kraft für ein Zuziehen des Schlosses gegen die Kraft einer Dichtung ermöglichbar ist. Darüber hinaus ist es Aufgabe der Erfindung, ein konstruktiv einfaches und kostengünstiges Schließsystem bereitzustellen.The invention is based on the technical problem of further developing such a motor vehicle lock in such a way that a sufficient stroke can be made available for rapid lowering and, at the same time, a sufficient force can be made possible for the lock to be pulled shut against the force of a seal. In addition, it is an object of the invention to provide a structurally simple and inexpensive locking system.

Die Lösung des Problems erfolgt durch die Merkmale des unabhängigen Patentanspruchs 1. Vorteilhafte Ausgestaltungen der Erfindung sind in den Unteransprüchen angegeben.The problem is solved by the features of independent claim 1. Advantageous configurations of the invention are specified in the subclaims.

Gemäß dem Patentanspruch 1 wird die Aufgabe der Erfindung dadurch gelöst, dass ein Schloss für ein Kraftfahrzeug, insbesondere ein Haubenschloss, bereitgestellt wird, aufweisend ein Gesperre mit einer Drehfalle und mindestens einer Sperrklinke, einem Schließbolzen und einem mit dem Schließbolzen zusammenwirkenden Auswerfer, wobei der Schließbolzen mittels des Auswerfers in einem Abhebeposition bringbar ist und mit zumindest einem elektrisch betätigbaren Mittel zum Bewegen des Schließbolzens aus der Abhebeposition in eine Schließposition, wobei ein Antriebshebel vorgesehen ist und das mittels des Antriebshebels der Auswerfer und zumindest mittelbar die Drehfalle betätigbar ist, wobei das zumindest eine elektrisch betätigbare Mittel (21) einen Zuziehantrieb zur Betätigung des Antriebshebel (5) umfasst, wobei erfindungsgemäß ein Zuziehhebel (7) vorgesehen ist und dass der Antriebshebel (5) wechselweise zur Überführung des Schließbolzens (11) von der Abhebeposition (A) in eine Sicherungsposition (S) mit dem Auswerfer (6) und zur Überführung des Schließbolzens (11) von der Sicherungsposition (S) in eine Schließposition (HR) mit dem Zuziehhebel (7) zusammenwirkt.
Durch die erfindungsgemäße Ausbildung einer Antriebskinematik ist nun die Möglichkeit geschaffen, den Schließbolzen sicher von der Abhebeposition in eine Schließposition zu überführen. Dabei wirkt der Antriebshebel zuerst auf den Auswerfer und bewegt den Auswerfer zumindest bereichsweise, um anschließend zumindest mittelbar mit der Drehfalle zusammenzuwirken und die Drehfalle in die Schließposition zu überführen. Durch das wechselweise Zusammenspiel zwischen Antriebshebel, Auswerfer und Drehfalle ist die Möglichkeit gegeben, die Eingriffsverhältnisse zwischen Antriebshebel, Auswerfer und Drehfalle einstellbar zu gestalten. Die Einstellung der Eingriffsverhältnisse kann dabei über unterschiedliche Übersetzungen zwischen Antriebshebel und Auswerfer und Antriebshebel und Drehfalle einstellbar gestaltet werden, so dass die Bewegungen und insbesondere die in die Kinematik eingeleiteten Kräfte an die Gegebenheiten des Absenkens und dichtenden Zuziehens anpassbar sind, was im Folgenden näher beschrieben ist.According to claim 1, the object of the invention is achieved in that a lock for a motor vehicle, in particular a hood lock, is provided, having a locking mechanism with a rotary latch and at least one pawl, a locking bolt and an ejector that interacts with the locking bolt, the locking bolt can be brought into a lift-off position by means of the ejector and with at least one electrically actuatable means for moving the locking bolt from the lift-off position into a closed position, a drive lever being provided and which can be actuated by means of the drive lever of the ejector and at least indirectly the rotary latch, the at least one electrically actuated means (21) comprises a closing drive for actuating the drive lever (5), wherein according to the invention a closing lever (7) is provided and that the drive lever (5) alternately for transferring the locking bolt (11) from the lifting position (A) into a safety position sition (S) interacts with the ejector (6) and to transfer the locking bolt (11) from the locking position (S) to a closed position (HR) with the closing lever (7).
The design of a kinematic drive system according to the invention now creates the possibility of safely transferring the locking bolt from the lift-off position into a closed position. The drive lever first acts on the ejector and moves the ejector at least in certain areas in order to then interact at least indirectly with the rotary latch and the To transfer rotary latch into the closed position. Due to the alternating interaction between the drive lever, ejector and rotary latch, it is possible to make the engagement relationships between the drive lever, ejector and rotary latch adjustable. The setting of the engagement conditions can be configured to be adjustable via different ratios between the drive lever and ejector and drive lever and rotary latch, so that the movements and in particular the forces introduced into the kinematics can be adapted to the circumstances of the lowering and sealing, which is described in more detail below .

Als Schließsysteme für Kraftfahrzeuge kommen hierbei bevorzugt Haubenschlösser zum Einsatz. Es ist aber auch vorstellbar, das erfindungsgemäße Schloss bei Klappen, Abdeckungen, Schiebetüren oder Seitentüren einzusetzen. Die von der Erfindung umfassten Kraftfahrzeugschlösser werden dort eingesetzt, wo eine elektrische Betätigung, das heißt ein elektrisch unterstütztes Zuziehen und/oder Offnen ermöglicht werden soll.Hood locks are preferably used as locking systems for motor vehicles. However, it is also conceivable to use the lock according to the invention for flaps, covers, sliding doors or side doors. The motor vehicle locks covered by the invention are used where electrical actuation, that is to say electrically assisted closing and / or opening, is to be made possible.

All diesen Schließsystemen gemeinsam ist ein Gesperre mit einer Drehfalle und mindestens einer Sperrklinke, wobei die Drehfalle mittels der Sperrklinke in einer gesperrten Position haltbar ist. Dabei kommen einstufige Sperrmechanismen aus einer Vorrast und einer Hauptrast wie auch Systeme mit einer oder zwei Sperrklinken zum Einsatz. Bevorzugt richtet sich die Erfindung auf ein Gesperre mit einer Hauptrastposition und einer Sperrklinke, wobei dies nicht beschränkend gilt.All these locking systems have in common a locking mechanism with a rotary latch and at least one pawl, the rotary latch being able to be held in a locked position by means of the pawl. Single-stage locking mechanisms consisting of a preliminary detent and a main detent as well as systems with one or two locking pawls are used. The invention is preferably directed to a locking mechanism with a main locking position and a locking pawl, although this is not restrictive.

Das Gesperre wechselwirkt mit einem Schließbolzen. Der Schließbolzen kann an der Kraftfahrzeugkarosserie befestigt sein oder zum Beispiel an einer Klappe oder Haube montiert vorliegen. Ist das Schließsystem zum Beispiel im Bereich einer Haube eingesetzt, so werden die Schließbolzen bzw. der Schließbolzen bevorzugt an der Haube montiert. Die Haube wird dann geschlossen, indem die Haube in Richtung des Schließsystems bewegt wird und auf einem Auswerfer ablegbar ist.The locking mechanism interacts with a locking bolt. The locking bolt can be attached to the motor vehicle body or, for example, can be mounted on a flap or hood. If the locking system is used, for example, in the area of a hood, the locking bolts or locking bolts are preferably mounted on the hood. The hood will then closed by moving the hood in the direction of the locking system and can be placed on an ejector.

Der Auswerfer ist Teil des Kraftfahrzeugschließsystems und wirkt mit dem Schließbolzen zusammen, wobei der Schließbolzen mittels des Auswerfers in eine Abhebeposition bringbar ist. Die Abhebeposition ist dabei die Position, in der die zum Beispiel Haube auf dem Auswerfer aufliegt und von dem Auswerfer in der Abhebeposition gehalten ist. Bevorzugt ist der Auswerfer federvorgespannt. Nach einem öffnen des Gesperres und somit einem Freigeben des Schließbolzens kann der Schließbolzen mittels des Auswerfers und insbesondere durch die Kraft der auf den Auswerfer wirkenden Feder in die Abhebeposition bewegbar ist.The ejector is part of the motor vehicle locking system and interacts with the locking bolt, the locking bolt being able to be brought into a lift-off position by means of the ejector. The lift-off position is the position in which the hood, for example, rests on the ejector and is held in the lift-off position by the ejector. The ejector is preferably spring-loaded. After opening the locking mechanism and thus releasing the locking bolt, the locking bolt can be moved into the lift-off position by means of the ejector and in particular by the force of the spring acting on the ejector.

Das Schloss weist ein elektrisch betätigbares Mittel zum Bewegen des Schließbolzens aus der Abhebeposition in eine Schließposition auf. Die Schließposition ist dabei dadurch bestimmt, dass der Schließbolzen und somit das bewegliche Bauteil in einer gesicherten Position am Kraftfahrzeug haltbar ist. Die Haube, die Tür und/oder Klappe ist geschlossen. Der Schließbolzen ist im gesperrten Gesperre gehalten und befindet sich bevorzugt in einer Hauptrastposition.The lock has an electrically actuatable means for moving the locking bolt from the lifting position into a locking position. The locking position is determined by the fact that the locking bolt and thus the movable component can be held in a secured position on the motor vehicle. The hood, door and / or flap is closed. The locking bolt is held in the locked ratchet and is preferably in a main locking position.

Zur Überführung des Schließbolzens von der Abhebeposition in die Sicherungsposition ist ein Antriebshebel mit dem Auswerfer in Eingriff bringbar. Der Antriebshebel ist elektrisch betätigbar und in der Lage, den Auswerfer und somit den Schließbolzen gegen die Kraft der Feder in die Sicherungsposition zu bewegen. Erst mit dem Erreichen der Sicherungsposition, in der ein Einklemmen verhinderbar ist, wirkt der Antriebshebel mit einem Zuziehhebel zusammen, so dass der Schließbolzen von der Sicherungsposition in die Schließposition überführbar ist.A drive lever can be brought into engagement with the ejector in order to transfer the locking bolt from the lifting position into the locking position. The drive lever can be actuated electrically and is able to move the ejector and thus the locking bolt into the safety position against the force of the spring. Only when the locking position is reached, in which jamming can be prevented, does the drive lever interact with a closing lever, so that the locking bolt can be transferred from the locking position into the locking position.

Erfindungsgemäß ist ein Zuziehhebel vorgesehen und der Antriebshebel wechselweise zur Überführung des Schließbolzens von der Abhebeposition in eine Sicherungsposition mit dem Auswerfer und zur Überführung des Schließbolzens von der Sicherungsposition in die Schließposition mit dem Zuziehhebel zusammenwirkt.According to the invention, a closing lever is provided and the drive lever interacts alternately with the ejector to transfer the locking bolt from the lift-off position into a locking position and with the closing lever to transfer the locking bolt from the locking position into the locking position.

Das zumindest eine elektrisch betätigbare Mittel umfasst einen Zuziehantrieb zur Betätigung des Antriebshebels. Der Einsatz eines separaten Zuziehantriebs ermöglicht es hierbei, dass große Kräfte in den Antriebshebel einleitbar sind. So werden zwar unterschiedliche Kraftverhältnisse während des Absenkens, das heißt in der Phase vom Überführen des Schließbolzens aus der Abhebeposition in die Sicherungsposition, benötigt, hier kann aber mit einer kleinen Übersetzung ein schnelles Bewegen des Schließbolzens erzielt werden, wohingegen während des Zuziehens mittels des Zuziehantriebs große Kräfte für eine hohe Übersetzung zur Verfügung gestellt werden können. Insbesondere kann es dabei vorteilhaft sein, dass der Zuziehantrieb einen Bowdenzug aufweist, wobei der Bowdenzug mit dem Antriebshebel in Eingriff bringbar ist. Durch den Einsatz eines Zuziehantriebs in Kombination mit einem Bowdenzug ist die Möglichkeit geschaffen, den Zuziehantrieb beabstandet vom Schließsystem anzuordnen, was sich wiederum vorteilhaft auf die Einbauverhältnisse des Schlosses auswirkt.The at least one electrically actuatable means comprises a closing drive for actuating the drive lever. The use of a separate closing drive enables large forces to be introduced into the drive lever. Although different force ratios are required during the lowering, i.e. in the phase from the transfer of the locking bolt from the lifting position to the safety position, here, however, a fast movement of the locking bolt can be achieved with a small translation, whereas large ones during the closing by means of the closing drive Forces for a high translation can be made available. In particular, it can be advantageous that the closing drive has a Bowden cable, wherein the Bowden cable can be brought into engagement with the drive lever. The use of a closing drive in combination with a Bowden cable creates the possibility of arranging the closing drive at a distance from the locking system, which in turn has an advantageous effect on the installation conditions of the lock.

Ist der Antriebshebel schwenkbar in einem Schlosskasten gelagert, so ergibt sich eine weitere Ausgestaltungsvariante der Erfindung. Durch die Lagerung des Antriebshebels im Schlosskasten kann die Anzahl der zur Kinematik gehörenden Bauteile reduziert werden und die Eingriffsverhältnisse zwischen Antriebshebel, Auswerfer und Zuziehantrieb sind in vorteilhafter Weise einstellbar. Insbesondere durch die Anbindung an den Schlosskasten, der bevorzugt aus einem Stahlblech gefertigt ist, kann eine sichere Lagerung des Antriebshebels gewährleistet werden. In vorteilhafter Weise ist auch der Auswerfer schwenkbar im Schlosskasten lagerbar.If the drive lever is pivotably mounted in a lock case, a further variant embodiment of the invention results. By mounting the drive lever in the lock case, the number of components belonging to the kinematics can be reduced and the engagement relationships between the drive lever, ejector and closing drive can be set in an advantageous manner. In particular, the connection to the lock case, which is preferably made from sheet steel, ensures that the drive lever is securely supported. Advantageously, the ejector can also be pivoted in the lock case.

Durch die zusätzliche und separate Lagerung des Auswerfers beabstandet vom Antriebshebel lassen sich die Hebelverhältnisse und somit das Übersetzungsverhältnis zwischen Antriebshebel und Auswerfer leicht einstellen. Insbesondere kann durch eine längliche Erstreckung des Auswerfers ausgehend von einem Lagerpunkt des Auswerfers bis hin zu einer ersten Auflagefläche des Schließbolzens auf dem Auswerfer die Eingriffsverhältnisse zwischen Antriebshebel und Auswerfer einstellen.Due to the additional and separate mounting of the ejector at a distance from the drive lever, the lever ratios and thus the transmission ratio between the drive lever and the ejector can be easily adjusted. In particular, by extending the ejector in an elongated manner, starting from a bearing point of the ejector up to a first contact surface of the locking bolt on the ejector, the engagement conditions between the drive lever and the ejector can be set.

Bevorzugt ist der Antriebshebel zwischen dem Lagerpunkt und der ersten Auflagefläche des Auswerfers schwenkbar im Schlosskasten aufgenommen. Darüber hinaus kann der Auswerfer eine zweite Auflagefläche aufweisen, in die der Antriebshebel mittels eines Mitnehmers eingreift. Die zweite Auflagefläche ist dabei zwischen Lagerpunkt des Auswerfers und Lagerpunkt des Antriebshebels angeordnet. Mittels einer Schwenkbewegung des Antriebshebels und eines Eingriffs des Antriebshebels über den Mitnehmer auf die zweite Anlagefläche kann somit das Übersetzungsverhältnis am Auswerfer eingestellt werden.
Ist der Zuziehhebel im Antriebshebel lagerbar und der Antriebshebel im Zuziehhebel führbar, so ergibt sich eine weitere Ausgestaltungsvariante der Erfindung. Durch eine Führung im Zuziehhebel kann der Antriebshebel zumindest bereichsweise unabhängig von einer Bewegung des Zuziehhebels bewegt werden. Gleichzeitig kann die Führung im Zuziehhebel als Lagerung für den Zuziehhebel im Schloss diesen. Somit kann die Anzahl der Bauteile im Schloss reduziert werden. Zusätzlich kann der Auswerfer ein Führungsbolzen für den Zuziehhebel aufweisen, so dass der Zuziehhebel zumindest durch den Auswerfer und den Antriebshebel bereichsweise im Schloss lagerbar und führbar ist.The drive lever is preferably received in the lock case in a pivotable manner between the bearing point and the first bearing surface of the ejector. In addition, the ejector can have a second support surface in which the drive lever engages by means of a driver. The second support surface is arranged between the bearing point of the ejector and the bearing point of the drive lever. The transmission ratio on the ejector can thus be set by means of a pivoting movement of the drive lever and the engagement of the drive lever via the driver on the second contact surface.
If the closing lever can be stored in the drive lever and the drive lever can be guided in the closing lever, a further variant embodiment of the invention results. By means of a guide in the closing lever, the drive lever can be moved at least in some areas independently of a movement of the closing lever. At the same time, the guide in the closing lever can act as a storage for the closing lever in the lock. This means that the number of components in the lock can be reduced. In addition, the ejector can have a guide pin for the closing lever, so that the closing lever can be supported and guided in areas in the lock at least by the ejector and the drive lever.

Eine Ausführungsform der Erfindung ergibt sich dann, wenn der Auswerfer und der Zuziehhebel mittels des Antriebshebels mit unterschiedlichen Übersetzungsverhältnissen bewegbar sind. Die Anordnung des Antriebshebels zwischen dem Lagerpunkt des Auswerfers und dem Eingriffsbereich des Schließbolzens auf den Auswerfer ermöglicht ein kleines Übersetzungsverhältnis von Antriebshebel auf den Auswerfer. Durch einen Angriffspunkt des Antriebshebels an den Zuziehhebel, der weiter beabstandet von einer Drehachse des Antriebshebels ist als der Abstand zwischen Lagerpunkt des Antriebshebels und Eingriffspunkt auf den Auswerfer, kann eine hohe Übersetzung in den Zuziehhebel eingeleitet werden. Somit steht eine hohe Kraft zum Zuziehen in der Kinematik und zum Bewegen des Schließbolzens in eine Schließposition, insbesondere gegen die Kraft einer Dichtung, zur Verfügung. Somit ist durch die Lage der Eingriffspunkte und der Anordnung zwischen Antriebshebel, Auswerfer und Zuziehhebel das Übersetzungsverhältnis an die zum Schließen des Schlosses benötigten Kraft- und Momentenverhältnisse einstellbar.One embodiment of the invention is obtained when the ejector and the closing lever have different transmission ratios by means of the drive lever are movable. The arrangement of the drive lever between the bearing point of the ejector and the area of engagement of the locking bolt on the ejector enables a small transmission ratio of the drive lever to the ejector. A high gear ratio can be introduced into the closing lever by a point of application of the drive lever on the closing lever, which is further spaced from an axis of rotation of the drive lever than the distance between the bearing point of the drive lever and the point of engagement on the ejector. Thus, a high force is available for closing in the kinematics and for moving the locking bolt into a closed position, in particular against the force of a seal. Thus, through the position of the engagement points and the arrangement between the drive lever, ejector and closing lever, the transmission ratio can be adjusted to the force and torque ratios required to close the lock.

Tatsächlich können der Auswerfer und der Zuziehhebel mittels des Antriebshebels mit unterschiedlichen Übersetzungsverhältnissen bewegt werden, wobei der Antriebshebel während der Bewegung des Auswerfers einen Hub von vorzugsweise einem Drittel seines Betätigungsweges vollführt und während der Bewegung des Zuziehhebels einen Hub von vorzugsweise zwei Dritteln seines Betätigungsweges vollführt und wobei der Schließbolzen während der Bewegung in die Sicherungsposition einen Hub von bevorzugt weniger als 25 mm und noch bevorzugter von 18 mm vollführt und der Schließbolzen während der Bewegung in die Hauptrastposition einen Hub von bevorzugt weniger als 10 mm und noch bevorzugter von 6 mm vollführt. Durch die bevorzugte aber nicht abschließend beschränkende Wahl des Übersetzungsverhältnisses kann ein schnelles Bewegen des Schließbolzens während des passiven Absenkens erfolgen, wohingegen während des aktiven Zuziehens eine große Schließkraft zur Verfügung steht, um die zum Beispiel Haube oder Schiebetür gegen den Widerstand einer Dichtung zu schließen. Die beispielhaft genannten Betätigungswege des Antriebshebels sind natürlich nicht beschränkend zu verstehen. Die Verhältnisse können sich je nach konstruktiven Gegebenheiten und Einsatzgebiet des Schlosses, insbesondere Haubenschlosses, ändern. Vorzugsweise sind die Hebelverhältnisse und Übersetzungsverhältnisse so zu wählen, dass ein ausreichender Hub des Schließbolzens zum Bewegen in die Sicherungsposition erfolgen kann und gleichzeitig eine erhöhte Kraft zum Zuziehen gegen den Dichtungsdruck zur Verfügung steht.In fact, the ejector and the closing lever can be moved by means of the drive lever with different transmission ratios, the drive lever performing a stroke of preferably one third of its actuating path during the movement of the ejector and a stroke of preferably two thirds of its actuating path during the movement of the closing lever, and wherein the locking bolt performs a stroke of preferably less than 25 mm and even more preferably 18 mm while moving into the safety position and the locking bolt performs a stroke of preferably less than 10 mm and even more preferably 6 mm while moving into the main detent position. The preferred but not exclusively restrictive selection of the transmission ratio allows the locking bolt to be moved quickly during passive lowering, whereas a large closing force is available during active closing to close the hood or sliding door, for example, against the resistance of a seal. The actuation paths of the drive lever mentioned by way of example are of course not to be understood as limiting. The conditions can change depending on the structural conditions and area of application of the lock, in particular the hood lock. The lever ratios and transmission ratios are preferably to be selected so that a sufficient stroke of the locking bolt can take place to move it into the locking position and at the same time an increased force is available to pull it shut against the sealing pressure.

In vorteilhafter Weise kann der Auswerfer während des Bewegens des Schließbolzens von der Abhebeposition in die Sicherungsposition mit einer niedrigen Übersetzung bewegbar und der Zuziehhebel ist während des Bewegens des Schließbolzens von der Sicherungsposition in die Schließposition mit einer hohen Übersetzung bewegbar. Während des Absenkens des Schließbolzens von der Abhebeposition in die Sicherungsposition wirkt zum Beispiel im Falle eines Schließens einer Haube die Kraft der Haube über den Schließbolzen auf das Schloss und insbesondere den Auswerfer, so dass die Schließbewegung durch die zusätzliche Last unterstützbar ist.Advantageously, the ejector can be moved with a low gear ratio while the locking bolt is being moved from the lift-off position to the locking position and the closing lever can be moved with a high gear ratio while the locking bolt is being moved from the locking position to the locking position. During the lowering of the locking bolt from the lifting position into the safety position, for example in the event of a hood closing, the force of the hood acts via the locking bolt on the lock and in particular the ejector, so that the closing movement can be supported by the additional load.

Während dieser Phase benötigt die Kinematik somit geringere Kräfte, so dass mittels einer kleinen Übersetzung ein auch als passives Absenken bezeichenbares Schließen mit geringen Kräften und einer relativ hohen Geschwindigkeit erfolgen kann. Während des elektrischen Zuziehens zum Beispiel einer Haube gegen eine Dichtung müssen hohe Schließkräfte in den Schließbolzen eingeleitet werden. Eine hohe Übersetzung während des aktiven Zuziehens führt dazu, dass hohe Kräfte auf den Schließbolzen erzeugt werden können. Die kleine Übersetzung während des passiven Absenkens führt dazu, dass viel Hub am Schließbolzen bei kleinem Hub des Antriebs-Bowdenzuges erzeugt wird. In vorteilhafter Weise lässt sich somit durch die Einstellung des Übersetzungsverhältnisses eine konstruktiv günstige und mit einer geringen Anzahl von Bauteilen ausgestattete Kinematik zum elektrischen Zuziehen eines Schlosses und insbesondere einer Frontklappe eines Kraftfahrzeuges bereitstellen.During this phase, the kinematics therefore require lower forces, so that by means of a small transmission a closing, which can also be referred to as passive lowering, can take place with low forces and a relatively high speed. During the electrical closing of a hood against a seal, for example, high closing forces must be introduced into the locking bolt. A high gear ratio during active closing means that high forces can be generated on the locking bolt. The small translation during passive lowering means that a lot of stroke is generated on the locking bolt with a small stroke of the drive Bowden cable. In an advantageous manner, by setting the transmission ratio, a structurally favorable kinematics with a small number of components for the electrical system can be achieved Provide pulling a lock and in particular a front flap of a motor vehicle.

Mit der erfindungsgemäßen Ausgestaltung eines Kraftfahrzeugschloss kann ein Verfahren zum Schließen eines elektrisch betätigbaren Schlosses bereitgestellt werden, bei dem mittels eines schwenkbar in einem Schlosskasten gelagerten Antriebshebels zuerst ein Auswerfer mittels des Antriebshebels derart betätigt wird, dass ein Schließbolzen von einer Hebeposition in eine Sicherungsposition überführt wird und bei dem anschließend ein Zuziehhebel mittels des Antriebshebels derart bewegt wird, dass der Schließbolzen von der Sicherungsposition in eine Schließposition überführt wird. Durch den getrennten Ablauf des ersten Absenkens mittels einer ersten Absenkkinematik unter Zuhilfenahme eines Auswerfers und eines anschließenden Zuziehens mittels eines Zuziehhebels können unterschiedliche Kraftverhältnisse bereitgestellt werden. Insbesondere ist das Verfahren an die unterschiedlichen Anforderungen während des Zuziehens anpassbar.With the embodiment of a motor vehicle lock according to the invention, a method for closing an electrically actuatable lock can be provided in which an ejector is first actuated by means of the drive lever by means of a drive lever mounted pivotably in a lock case in such a way that a locking bolt is transferred from a lifting position to a locking position and in which a closing lever is then moved by means of the drive lever in such a way that the locking bolt is transferred from the locking position to a locking position. Due to the separate sequence of the first lowering by means of a first lowering kinematics with the aid of an ejector and a subsequent closing by means of a closing lever, different force relationships can be provided. In particular, the method can be adapted to the different requirements during the closing process.

Nachfolgend wird die Erfindung unter Bezugnahme auf die anliegenden Zeichnungen anhand eines bevorzugten Ausführungsbeispiels näher erläutert. Es gilt jedoch der Grundsatz, dass das Ausführungsbeispiel die Erfindung nicht beschränkt, sondern lediglich eine Ausgestaltungsform darstellt. Der Umfang der Erfindung wird durch die Merkmale der anhängigen Ansprüche definiert.The invention is explained in more detail below with reference to the accompanying drawings using a preferred exemplary embodiment. However, the principle applies that the exemplary embodiment does not limit the invention, but rather merely represents an embodiment. The scope of the invention is defined by the features of the appended claims.

Es zeigt:

Figur 1
ein lediglich teilweise dargestelltes Kraftfahrzeugschloss gemäß der Erfindung in einer Seitenansicht in einer Abhebeposition, wobei der Schließbolzen auf dem Auswerfer aufliegt und ein Fanghaken außer Eingriff mit dem Schließbolzen gebracht ist,
Figur 2
das Schloss gemäß der Figur 1 in einer Abhebeposition,
Figur 3
das Schloss gemäß der Figur 1 in einer Sicherungsposition, und
Figur 4
das Schloss gemäß der Figur 1 in einer Schließposition.
It shows:
Figure 1
an only partially shown motor vehicle lock according to the invention in a side view in a lift-off position, the locking bolt on the ejector rests and a catch hook is disengaged from the locking bolt,
Figure 2
the lock according to the Figure 1 in a lift-off position,
Figure 3
the lock according to the Figure 1 in a secured position, and
Figure 4
the lock according to the Figure 1 in a closed position.

In der Figur 1 ist ein Kraftfahrzeugschloss 1 bereichsweise dargestellt. Das Schloss 1 umfasst einen Schlosskasten, eine Drehfalle 3, eine Sperrklinke 4, einen Antriebshebel 5, einen Auswerfer 6, einen Zuziehhebel 7, einen Fanghaken 8 sowie zwei elektrische Stellmittel in Form von Kleinstantrieben 9, 10. Ein Schließbolzen 11 liegt auf dem Auswerfer 6 auf, wodurch die Abhebeposition des Schlosses bestimmbar ist.In the Figure 1 a motor vehicle lock 1 is shown in certain areas. The lock 1 comprises a lock case, a rotary latch 3, a pawl 4, a drive lever 5, an ejector 6, a closing lever 7, a catch hook 8 and two electrical actuating means in the form of miniature drives 9, 10. A locking bolt 11 lies on the ejector 6 on, whereby the lifting position of the lock can be determined.

Drehfalle 3 und Sperrklinke 4 bilden das Gesperre, wobei die Sperrklinke 4 in die Drehfalle 3 und insbesondere in eine Verlängerung 12 einrastbar ist. Die Verlängerung 12 rastet dabei in eine hakenförmige Kontur 13 der Sperrklinke 4 ein. In der vorliegenden Form ist die Sperrklinke 4 mittels einer Feder im Gegenuhrzeigersinn vorgespannt und liegt beispielsweise gegen einen Anschlag 14 im Schlosskasten 2 an. Mittels des Stellmittels 10 kann die Sperrklinke 3 in Richtung des Pfeils P1 im Uhrzeigersinn bewegt werden. Das Stellmittel kann beispielsweise ein linearer Kleinstantrieb sein, der die Sperrklinke 4 im Uhrzeigersinn verschwenken kann und somit in eine Position bewegen, in der die Sperrklinke 4 außer Eingriff mit der Drehfalle 3 gelangt.Rotary latch 3 and pawl 4 form the locking mechanism, with the pawl 4 being able to be locked into the rotary latch 3 and in particular into an extension 12. The extension 12 engages in a hook-shaped contour 13 of the pawl 4. In the present form, the pawl 4 is preloaded in the counterclockwise direction by means of a spring and rests against a stop 14 in the lock case 2, for example. By means of the adjusting means 10, the pawl 3 can be moved clockwise in the direction of the arrow P1. The actuating means can be, for example, a linear small drive which can pivot the pawl 4 clockwise and thus move it into a position in which the pawl 4 disengages from the rotary latch 3.

Der Auswerfer 6 ist um eine Achse 15 verschwenkbar im Schlosskasten 2 aufgenommen. Der Auswerfer 6 wird durch die Kraft FF einer nicht dargestellten Feder im Uhrzeigersinn vorbelastet. Die Federkraft FF hält den Auswerfer 6 in der in der Figur 1 dargestellten Position, so dass der Schließbolzen 11 und folglich zum Beispiel eine Motorhaube in der Abhebeposition haltbar ist. Der Schließbolzen 11 befindet sich außer Eingriff mit der Drehfalle 3 und liegt lose auf dem Auswerfer 6 und der Drehfalle 3 auf. Der Auswerfer 6 weist eine erste Anlagefläche 16 und eine zweite Anlagefläche 17 auf. An der ersten Anlagefläche 16, die zum Beispiel aus einer Abkantung am Auswerfer 6 gebildet sein kann, liegt der Schließbolzen 11 an. An der zweiten Anlagefläche 17 greift der Antriebshebel 5 an. Der Auswerfer ist beispielsweise als Blechstanzteil aus einem Stahl fertigbar, wobei die Anlageflächen 16, 17 zum Beispiel als Abkantungen vorliegen können.The ejector 6 is received in the lock case 2 so as to be pivotable about an axis 15. The ejector 6 is biased clockwise by the force F F of a spring, not shown. The spring force F F holds the ejector 6 in the in the Figure 1 position shown, so that the locking bolt 11 and consequently, for example, an engine hood can be held in the lift-off position. The locking bolt 11 is out of engagement with the rotary latch 3 and rests loosely on the ejector 6 and the rotary latch 3. The ejector 6 has a first contact surface 16 and a second contact surface 17. The locking bolt 11 rests on the first contact surface 16, which can be formed, for example, from a fold on the ejector 6. The drive lever 5 acts on the second contact surface 17. The ejector can be manufactured, for example, as a stamped sheet metal part from steel, with the contact surfaces 16, 17 being able to be present as folded edges, for example.

Der Antriebshebel 5 wirkt mit einem Mitnehmer 18 auf dem Auswerfer. Der Antriebshebel 5 wiederum ist um die Achse 19 herum schwenkbar im Schlosskasten 2 aufgenommen. Der Antriebshebel 5 weist darüber hinaus einen Lager-, Antriebs- und Führungszapfen 20 auf. Der Zapfen 20 dient einerseits zur Lagerung des Zuziehhebels 7, zum Antrieb des Zuziehhebels 7 und dient gleichzeitig als Führungszapfen 20 für den Antriebshebel 5.The drive lever 5 acts with a driver 18 on the ejector. The drive lever 5 is in turn received in the lock case 2 so as to be pivotable about the axis 19. The drive lever 5 also has a bearing, drive and guide pin 20. The pin 20 serves on the one hand to support the closing lever 7, to drive the closing lever 7 and at the same time serves as a guide pin 20 for the drive lever 5.

Der Antriebshebel 5 wird zum Beispiel mittels eines Zuziehantriebs 21 und mittels zum Beispiel eines lediglich gestrichelt dargestellten Bowdenzugs 22 betätigt. Durch den Bowdenzug 22 ist eine Kraft FB in den Antriebshebel 5 einleitbar. Durch den Zuziehantrieb 21 wird der Antriebshebel somit um die Achse 19 herum im Uhrzeigersinn bewegt.The drive lever 5 is actuated, for example, by means of a closing drive 21 and, for example, by means of a Bowden cable 22, shown only in dashed lines. A force F B can be introduced into the drive lever 5 by the Bowden cable 22. The drive lever is thus moved clockwise around the axis 19 by the closing drive 21.

Der Zuziehhebel 7 weist eine Führungsnut 23 auf, in der der Zapfen 20 führbar ist. Der Zuziehhebel 7 kann wiederum gegen einen Bolzen 24 am Auswerfer 6 anliegen und somit sicher im Schloss 1 führbar sein. Der Zuziehhebel 7 weist eine Ausnehmung 25 auf, die formschlüssig mit der Verlängerung 12 der Drehfalle 3 in Eingriff bringbar ist.The closing lever 7 has a guide groove 23 in which the pin 20 can be guided. The closing lever 7 can in turn rest against a bolt 24 on the ejector 6 and can thus be safely guided in the lock 1. The closing lever 7 has a recess 25 which can be brought into engagement with the extension 12 of the rotary latch 3 in a form-fitting manner.

Der Fanghaken 8 ist mit dem Schließbolzen 11 in Eingriff bringbar. Vorzugsweise ist der Fanghaken 8 in Richtung des Schließbolzens 11 federvorbelastet und würde ohne das elektrische Stellmittel 9 in den Schließbolzen 11 eingreifen. Der Schließbolzen 11 ist bevorzugt als Bügel, so dass der Fanghaken 8 in den Schließbolzen 11 eingreifen kann. In der dargestellten Ausführungsform ist der Fanghaken 8 durch das Stellmittel 9 in Richtung des Pfeils P2 bewegt worden und insbesondere in Richtung des Pfeils P2 im Uhrzeigersinn verschwenkt worden. Der Fanghaken kann im Schlosskasten 2 oder einem nicht dargestellten Teil des Schlosskastens 2 schwenkbar gelagert aufgenommen sein. Insbesondere durch den Einsatz des elektrischen Stellmittels 9 ist die Möglichkeit geschaffen, die Haube ohne manuellen Eingriff, das heißt automatisch zu öffnen.
In den Figuren 2, 3 und 4 ist der Zuziehvorgang durch das erfindungsgemäß ausgebildete Schloss anhand der Positionen Abhebeposition in der Figur 2, Sicherungsposition in der Figur 3 und Schließposition in der Position 4 wiedergegeben. Insofern beschreibt die Figur 2 die Ausgangslage des Antriebshebels 5, die Figur 3 die Überführung des Antriebshebels 5, die der Antriebshebel nach einer Bewegung von etwa einem Drittel seines Betätigungsweges vollführt hat, und die Figur 4 die Position des Antriebshebels 5 beim Erreichen der Endlage, als Überhubposition oder Hauptrastposition der Drehfalle, wobei der Antriebshebel 5 einen Betätigungsweg von etwa zwei Drittel seines Betätigungsweges vollführt hat.The catch hook 8 can be brought into engagement with the locking bolt 11. The catch hook 8 is preferably spring-loaded in the direction of the locking bolt 11 and would engage in the locking bolt 11 without the electrical adjusting means 9. The locking bolt 11 is preferably designed as a bracket, so that the catch hook 8 can engage in the locking bolt 11. In the embodiment shown, the catch hook 8 has been moved by the adjusting means 9 in the direction of the arrow P2 and, in particular, has been pivoted clockwise in the direction of the arrow P2. The catch hook can be pivotably received in the lock case 2 or in a part of the lock case 2 (not shown). In particular, the use of the electrical adjusting means 9 creates the possibility of opening the hood without manual intervention, that is to say automatically.
In the Figures 2, 3 and 4 is the closing process by the lock designed according to the invention based on the positions of the lifting position in the Figure 2 , Backup position in the Figure 3 and closed position in position 4. In this respect describes the Figure 2 the starting position of the drive lever 5, the Figure 3 the transfer of the drive lever 5, which the drive lever has completed after a movement of about a third of its actuation path, and the Figure 4 the position of the drive lever 5 when the end position is reached, as the overtravel position or the main locking position of the rotary latch, the drive lever 5 having completed an actuation path of approximately two thirds of its actuation path.

In der Abhebeposition A liegt der Schließbolzen 11 auf der Drehfalle 3 und dem Auswerfer 6 auf, wobei der Schließbolzen 11 durch den Auswerfer 6 und zum Teil auch durch die im Gegenuhrzeigersinn federbelastete Drehfalle 3 in der Abhebeposition A gehalten ist. Der Antriebshebel 5 befindet sich in seiner Ausgangslage.In the lifting position A, the locking bolt 11 rests on the rotary latch 3 and the ejector 6, the locking bolt 11 being held in the lifting position A by the ejector 6 and partly also by the counterclockwise spring-loaded rotary latch 3. The drive lever 5 is in its starting position.

In der Figur 3 ist die Sicherungsposition S wiedergegeben. Der Antriebshebel 5 wurde durch den Zuziehantrieb 21 und insbesondere durch den Bowdenzug 22 im Uhrzeigersinn verschwenkt. Durch die Schwenkbewegung wurde der Auswerfer 6 um seine Achse 15 herum im Gegenuhrzeigersinn verschwenkt, so dass der Schließbolzen 11 und insbesondere der Schließbolzen 11 in Kombination mit einer Last einer Haube in die Sicherungsposition S bewegt. Die Schwenkbewegung des Auswerfers 6 bewirkt gleichzeitig, dass die Drehfalle 3 durch den Schließbolzen 11 im Uhrzeigersinn um die Achse 26 herum verschwenkt wurde, so dass ein Zylinderbolzen 27 in den Eingriffsbereich der Ausnehmung 25 des Zuziehhebels 7 gelangt. In dieser Sicherungsposition S gelangt die Drehfalle 3 formschlüssig mit dem Schließbolzen 11 in Eingriff und der Zuziehhebel 7 gelangt in Eingriff mit dem Bolzen 27. Gleichzeitig erreicht der Zapfen 20 das Ende der Führungsnut 23, wodurch der Führungszapfen 20 in der Lage ist, eine Kraft auf den Zuziehhebel 7 zu übertragen.In the Figure 3 the backup position S is reproduced. The drive lever 5 was by the closing drive 21 and in particular by the Bowden cable 22 pivoted clockwise. As a result of the pivoting movement, the ejector 6 was pivoted counterclockwise about its axis 15, so that the locking bolt 11 and in particular the locking bolt 11 moved into the locking position S in combination with a load of a hood. The pivoting movement of the ejector 6 simultaneously causes the rotary latch 3 to be pivoted clockwise around the axis 26 by the locking bolt 11, so that a cylinder bolt 27 comes into the engagement area of the recess 25 of the closing lever 7. In this securing position S, the rotary latch 3 engages positively with the locking bolt 11 and the closing lever 7 engages the bolt 27. At the same time, the pin 20 reaches the end of the guide groove 23, whereby the guide pin 20 is able to apply a force to transmit the closing lever 7.

Die Figur 4 zeigt die Hauptrastposition HR oder Schließposition HR des Gesperres, in der sich der Schließbolzen 11 in der Schließposition befindet. Die Drehfalle 3 ist mit der Sperrklinke 4 in Eingriff, so dass das Gesperre geschlossen und der Schließbolzen 11 in seiner Lage gesichert vorliegt. Die Schließposition HR wurde dadurch erreicht, dass der Antriebshebel 5 weiter durch die Kraft FB des Zuziehantriebs 21 im Uhrzeigersinn verschwenkt wurde. Der Zapfen 20 bewegt durch diese Bewegung die Drehfalle 3 in die Schließposition HR.The Figure 4 shows the main locking position HR or locking position HR of the locking mechanism in which the locking bolt 11 is in the locking position. The rotary latch 3 engages with the pawl 4 so that the locking mechanism is closed and the locking bolt 11 is secured in its position. The closed position HR was achieved in that the drive lever 5 was pivoted further clockwise by the force FB of the closing drive 21. As a result of this movement, the pin 20 moves the rotary latch 3 into the closed position HR.

Wie deutlich aus den Figuren 2 und 3 zu erkennen, wird durch den Antriebshebel und insbesondere die Eingriffsverhältnisse von Antriebshebel 5 auf den Auswerfer 6 ein Übersetzungsverhältnis bereitgestellt, mit dem ein zügiges, das heißt schnelles Absenken des Schließbolzens 11 ermöglichbar ist. Nach dem Erreichen der Sicherungsposition S wirkt der Antriebshebel vornehmlich mit dem Zuziehhebel 7 zusammen, wodurch sich ein größeres Übersetzungsverhältnis ergibt und eine große Kraft zum Schließen der Drehfalle bzw. zum Überführen des Schließbolzens 11 in die Hauptrastposition HR zur Verfügung stellbar ist. Durch die Kombination und insbesondere das Zusammenspiel aus Antriebshebel 5, Auswerfer 6 und Zuziehhebel 7 ist somit ein sicheres und auf die Anforderungen insbesondere der Dichtheit einer durch das erfindungsgemäße Schloss bewegten Tür, Haube oder Klappe gewährleistbar.How clear from the Figures 2 and 3 As can be seen, a transmission ratio is provided by the drive lever and in particular the engagement conditions of the drive lever 5 on the ejector 6, with which a rapid, that is to say rapid lowering of the locking bolt 11 is possible. After reaching the securing position S, the drive lever primarily interacts with the closing lever 7, which results in a greater transmission ratio and a large force for closing the catch or for moving the locking bolt 11 into the main detent position HR Is available. The combination, and in particular the interaction of the drive lever 5, ejector 6 and closing lever 7, can guarantee a safe door, hood or flap that is moved by the lock according to the invention, in particular to meet the requirements of the tightness.

BezugszeichenlisteList of reference symbols

11
Schlosslock
22
SchlosskastenLock case
33
DrehfalleRotary latch
44th
SperrklinkePawl
55
AntriebshebelDrive lever
66th
AuswerferEjector
77th
ZuziehhebelClosing lever
88th
FanghakenCatch hook
9, 109, 10
StellmittelAdjusting agent
1111
SchließbolzenLocking bolt
1212
Verlängerungrenewal
1313
Konturcontour
1414th
Anschlagattack
15, 19, 2615, 19, 26
Achseaxis
1616
erste Anlageflächefirst contact surface
1717th
zweite Anlageflächesecond contact surface
1818th
MitnehmerCarrier
2020th
Lager-, Zuzieh- und FührungszapfenBearing, closing and guide pins
2121st
ZuziehantriebClosing drive
2222nd
BowdenzugBowden cable
2323
FührungsnutGuide groove
24, 2724, 27
Bolzenbolt
2525th
AusnehmungRecess
P1, P2P1, P2
Pfeilarrow
FF F F
FederkraftSpring force
FB F B
Kraft BowdenzugPower bowden cable

Claims (7)

  1. Latch (1) for a motor vehicle, in particular a hood latch, comprising a locking mechanism having a catch (3) and at least one pawl (4), a locking pin (11) and an ejector (6) which interacts with the locking pin (11), it being possible for the locking pin (11) to be brought into a lift-off position (A) by means of the ejector (6), and having at least one electrically operatable means (21) for moving the locking pin (11) from the lift-off position (A) into a closed position (HR), a drive lever (5) being provided and it being possible for the ejector (6) and, at least indirectly, the catch (3) to be operated by means of the drive lever (5), the at least one electrically operatable means (21) comprising a closure drive for operating the drive lever (5), a closure lever (7) being provided, characterized in that the drive lever (5) alternately interacts with the ejector (6) so as to transfer the locking pin (11) from the lift-off position (A) into a securing position (S) and with the closure lever (7) so as to transfer the locking pin (11) from the securing position (S) into a closed position (HR).
  2. Latch (1) according to claim 1, characterized in that the closure drive (21) comprises a Bowden cable (22), it being possible for the Bowden cable (22) to be brought into engagement with the drive lever (5).
  3. Latch (1) according to either claim 1 or claim 2, characterized in that the drive lever (5) can be pivotably mounted in a latch case (2).
  4. Latch (1) according to any of claims 1 to 3, characterized in that the ejector (6) can be pivotably mounted in a latch case (2).
  5. Latch (1) according to any of claims 1 to 4, characterized in that the closure lever (7) can be mounted in the drive lever (5) and the drive lever (5) can be guided in the closure lever (7).
  6. Latch (1) according to any of claims 1 to 5, characterized in that the ejector (6) can be moved at a low transmission ratio while the locking pin (11) is being moved from the lift-off position (A) into the securing position (S), and the closure lever (7) can be moved at a high transmission ratio while the locking pin (11) is being moved from the securing position (S) into the closed position (HR).
  7. Latch (1) according to any of claims 1 to 6, characterized in that the ejector (6) and the closure lever (7), and preferably indirectly the catch, can be moved by means of the drive lever (5) at different transmission ratios, the drive lever (5) in particular traveling a stroke length of preferably one third of its operating distance during the movement of the ejector (6) and traveling a stroke length of preferably two thirds of its operating distance during the movement of the closure lever (7), and the locking pin (11) in particular traveling a stroke length of preferably 18 mm during the movement into the securing position (S) and the locking pin (11) traveling a stroke length of preferably 6 mm during the movement into the main ratchet position (HR).
EP18712075.3A 2017-04-19 2018-03-01 Lock for a motor vehicle Active EP3612695B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102017108266.2A DE102017108266A1 (en) 2017-04-19 2017-04-19 CASTLE FOR A MOTOR VEHICLE
PCT/DE2018/100186 WO2018192608A1 (en) 2017-04-19 2018-03-01 Lock for a motor vehicle

Publications (2)

Publication Number Publication Date
EP3612695A1 EP3612695A1 (en) 2020-02-26
EP3612695B1 true EP3612695B1 (en) 2020-12-16

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EP18712075.3A Active EP3612695B1 (en) 2017-04-19 2018-03-01 Lock for a motor vehicle

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US (1) US11414900B2 (en)
EP (1) EP3612695B1 (en)
KR (1) KR102527083B1 (en)
CN (1) CN110536996B (en)
DE (1) DE102017108266A1 (en)
WO (1) WO2018192608A1 (en)

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Also Published As

Publication number Publication date
EP3612695A1 (en) 2020-02-26
DE102017108266A1 (en) 2018-10-25
CN110536996A (en) 2019-12-03
US20210095499A1 (en) 2021-04-01
US11414900B2 (en) 2022-08-16
KR102527083B1 (en) 2023-04-28
CN110536996B (en) 2021-07-30
KR20190141199A (en) 2019-12-23
WO2018192608A1 (en) 2018-10-25

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