EP1637671B1 - Motor vehicle lock - Google Patents

Motor vehicle lock Download PDF

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Publication number
EP1637671B1
EP1637671B1 EP20050013185 EP05013185A EP1637671B1 EP 1637671 B1 EP1637671 B1 EP 1637671B1 EP 20050013185 EP20050013185 EP 20050013185 EP 05013185 A EP05013185 A EP 05013185A EP 1637671 B1 EP1637671 B1 EP 1637671B1
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EP
European Patent Office
Prior art keywords
latch
additional kinematics
motor vehicle
lock latch
kinematics
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EP20050013185
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German (de)
French (fr)
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EP1637671A1 (en
Inventor
Checrallah Kachouh
Markus Kothe
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Brose Schliesssysteme GmbH and Co KG
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Brose Schliesssysteme GmbH and Co KG
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Publication of EP1637671A1 publication Critical patent/EP1637671A1/en
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Classifications

    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B77/00—Vehicle locks characterised by special functions or purposes
    • E05B77/36—Noise prevention; Anti-rattling means
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T292/00—Closure fasteners
    • Y10T292/08—Bolts
    • Y10T292/1043—Swinging
    • Y10T292/1044—Multiple head
    • Y10T292/1045—Operating means
    • Y10T292/1047—Closure

Definitions

  • the present invention relates to a motor vehicle lock with the features of the preamble of claim 1.
  • all types of side, hood and Klappenschlössem are summarized under the "motor vehicle lock”.
  • the motor vehicle lock in question ( EP 0 589 158 A1 ), from which the invention proceeds, is equipped with the usual closing elements latch and pawl.
  • the latch is pivotable about a pivot axis and can be brought into an open position and a main closed position.
  • the pawl is in a holding position in which it holds the latch in the main closed position, and brought into a release position.
  • the pawl in the holding position is in direct engagement with the latch.
  • latch When located in the main closed position latch it is provided that the latch is in frictional engagement with a arranged on an associated motor vehicle door striker, whereby the motor vehicle door is held in the closed position.
  • the sealing gasket caused by the door seal act in this state, high holding forces of the latch on the striker and accordingly from the pawl on the latch.
  • These high forces lead during the opening process, which is triggered by the adjustment of the pawl from the holding position to the release position, to a sudden return of the latch and corresponding to a sudden opening movement of the vehicle door.
  • Such a sudden opening process is generally associated with high, unwanted opening noise, which are also perceived as an "opening bang".
  • the high opening noises are caused inter alia by the fact that the pawl disengaged from under high, substantially caused by the described sealing counter-pressure biasing latch comes.
  • the jerky movement of the vehicle door leads to a further noise.
  • the force required for the adjustment of the pawl from the holding position to the release position force is relatively high due to the high bias of the latch, since the friction between the pawl on the one hand and the latch on the other hand is correspondingly high.
  • the high Aushebekraft leads depending on the structural design initially to an elastic deformation of the components involved in lifting the pawl. These are, for example, levers, fasteners o. The like .. After completion of the pawl these components are suddenly transferred to their original state, causing more opening noise or even an opening bang.
  • the motor vehicle lock disclosed here shows, in addition to the closing elements described above, a closing auxiliary drive which adjusts the latch in an overstroke position during each opening operation prior to lifting the pawl, so that the lifting of the pawl itself causes almost no opening noise. Subsequently, the latch is transferred at low speed by the auxiliary closing drive in the open position.
  • the closing elements lock catch and pawl are provided, wherein a coupled with the lock latch additional kinematics is provided, which is also adjusted in a return movement of the latch from the main closed position in the direction of the open position.
  • the additional kinematics is so coupled to the pawl that the pawl located in the holding position blocks the additional kinematics and thereby holds the latch in the main closed position.
  • the additional kinematics is designed as a reduction gear, so that the for Adjustment of the pawl from the holding position to the release position required force is relatively low due to lack of high friction.
  • the present invention is based on the problem, the known motor vehicle lock in such a way and further develop that a reduction of the opening noise is guaranteed with minimal design effort.
  • Essential is first the pivotable and non-detachable articulation of additional kinematics to the latch. This ensures that the return movement of the latch from the main closing position out in the direction of the open position simultaneously causes an adjustment of the additional kinematics. So it is a kind of forced coupling between the additional kinematics and the latch realized.
  • the additional kinematics can be frictionally coupled or coupled with a resilient resistance element.
  • Yielding here is to be construed broadly and merely means that a blockage of the additional kinematics and thus the latch is not provided by the resistance element.
  • coupled is meant that a force from the resistance element, if necessary, only after the beginning of the return movement begins. If a force effect is provided by the resistance element on the latch already in the main closing position befind Anlagen latch, thereby the lifting of the pawl counteracting friction is reduced accordingly, because the force of theticianseiements is directed in the closing direction.
  • the preferred embodiment according to claim 2 additionally allows a reduction of the force required for the adjustment of the pawl from the holding position to the release position, which in turn leads to a reduction of the opening noise.
  • the pawl according to claim 3 can be brought into direct engagement with the latch.
  • the claims 6 and 7 show preferred ways of inhibiting the first movement portion of the return movement, without hindering the restoring movement otherwise.
  • FIG. 1 shows a motor vehicle lock 1 with a latch 2, which is engageable in frictional engagement with a arranged on an associated motor vehicle door striker 2a, and a pawl 3.
  • the latch 2 is pivotable about a pivot axis 4 and in an open position, a main closing position and in a Vorsch practitioner brought.
  • the pawl 3 can be brought into the holding position shown in FIG. 1 and in a release position, wherein the pawl 3 in the holding position holds the latch 2 in the main closed position and in the prelocking position.
  • the adjustment of the pawl 3 in the release position is connected in the embodiment shown in FIG. 1 with a pivoting of the pawl 3 about a pivot axis 5dermaherum.
  • the pawl 3 located in the release position is shown by dashed lines in FIG.
  • the latch 2 is an additional kinematics 6, 7 assigned, which is configured in the present case as a lever kinematics and will be explained in more detail below.
  • the additional kinematics 6, 7 is articulated pivotably and permanently on the pivot axis 8 to the latch 2. It has already been noted that this additional kinematics 6, 7 is forcibly coupled to the latch 2, so that the return movement of the latch 2 from the main closed position in the direction of the open position, in Fig. 1 right around, a corresponding adjustment of the additional kinematics 6, 7th causes.
  • the additional kinematics 6, 7 is frictionally coupled with a resilient resistance element 9 and that the force effect of the resistance element 9 on the additional kinematics 6, 7 causes an inhibition of a first movement portion of the return movement of the lock catch 2.
  • this frictional coupling is ensured in any case in the first movement section of the return movement, so that a sudden opening operation, as described above, is prevented.
  • the first movement section of the return movement can be, for example, the first 25% of the return movement.
  • the resistance element 9 can be configured and arranged so that it already exerts a force on the additional kinematics 6, 7 in the sense of a bias of the additional kinematics 6, 7 when the lock catch 2 is in the main locking position. But it may also be advantageous that the resistance element 9 exerts a corresponding force only after the beginning of the return movement to the additional kinematics 6, 7.
  • the pawl 3 is coupled with the additional kinematics 6, 7, that the pawl 3 in the holding position is in blocking engagement with the additional kinematics 6, 7 and thereby the latch 2 in the main closed position and in the prelocking position holds.
  • Fig. 2 shows a separate arrangement of additional kinematics 6, 7 on the one hand and pawl 3 on the other.
  • Fig. 2 shows the pawl 3 located in the holding position, which is in direct blocking engagement with a main catch 10 of the latch 2. It may be noted that, depending on the application, a corresponding pre-restraint can be provided.
  • the resistance element 9 may for example be a metal or rubber spring or a pneumatically acting spring.
  • the resistance element 9 causes after passing through the first movement section of the return movement of the lock latch 2 as possible no further, then undesirable, inhibition of the return movement.
  • the resistance element 9 is arranged and designed so that after passing through the first movement section of the return movement of the latch 2 simultaneously a dead center of the resistive element 9 is traversed, so that the return movement of the resistive element 9 is no longer inhibited, but now promoted becomes.
  • the resistance element 9 in a corresponding manner to a fixed housing o. The like.
  • the resistance element 9 is designed here as a helical spring.
  • FIG. 2 likewise shows a resistance element 9 designed as a spring element.
  • the resistance element 9 is a leg spring. The passage of a dead center of the resistive element 9 is not provided here.
  • the resistance element 9 can also be designed as a damping element.
  • friction-based or hydraulic damping elements are known.
  • the resistance element 9 designed as a damping element can, for example, have a piston running in a cylinder, which achieves the desired damping due to the friction between the piston and the cylinder wall.
  • the piston can also be filled with a liquid which flows in an adjustment of the damping element from one cylinder chamber into the other.
  • the resistance element 9 is frictionally connected to a component of the additional kinematics 6, 7, so that in turn a corresponding damping effect is achieved.
  • the resistance element 9 can be designed correspondingly weak and therefore cost.
  • an optimal vote of the lower or transmission ratio of the additional kinematics 6, 7 to the resistance element 9 and to be expected in the opening direction usually to be expected bias of the latch 2.
  • the expected sealing back pressure is to be included in this consideration.
  • the additional kinematics 6, 7 together with the latch 2 form a four-joint kinematics.
  • the additional kinematics 6, 7 pivotable about a pivot axis closing lever 6 and a hinged to the latch 2 on the one hand and on the closing lever 6 on the other hand hinged Intermediate lever 7 on.
  • pivot axes 12, 13 are provided for the articulation of the intermediate lever 7 to the latch 2 and the closing lever 6 corresponding pivot axes 12, 13 are provided.
  • the pivot axis 4 of the latch 2, the pivot axis 12 between latch 2 and intermediate lever 7, the pivot axis 13 between intermediate lever 7 and closing lever 6 and the pivot axis 11 of the closing lever 6 thus together form a four-joint kinematics.
  • the resistance element 9 can be coupled to the additional kinematics 6, 7.
  • the resistance element 9 is coupled in the arrangement described above with the closing lever 6. As a result, the transmission characteristics of the four-joint kinematics can be optimally utilized.
  • the intermediate lever 7 closes when in the main locking position located latch 2, the intermediate lever 7 with the closing lever 6 an obtuse angle, so that the resistance element 9 must apply a very small force to effectively inhibit the return movement of the latch 2.
  • the intermediate lever 7 forms with the closing lever 6 a toggle mechanism.
  • the sealing back pressure causes via the striker 2a and a possibly existing spring bias of the latch 2, an adjustment of the latch 2 in the direction of the open position .
  • the additional kinematics 6, 7 provides a high reduction ratio, so that with a small force of the resistive element 9 on the additional kinematics 6, 7, a large force from the additional kinematics 6, 7 is effected on the latch 2.
  • the return movement of the latch 2 is inhibited, but not blocked.
  • the further return movement of the latch 2 by the resistance element 9 is not essential, preferably not at all, handicapped.
  • a dead center of the resistive element 9 is traversed.
  • the configuration of the additional kinematics 6, 7 is not limited to the illustrated shape of a lever mechanism.
  • the design of the additional kinematics 6, 7 can basically find all suitable known from the prior art types of transmission application.

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  • Lock And Its Accessories (AREA)
  • Vehicle Body Suspensions (AREA)

Abstract

The lock has a latch (2) pivoting around a pivot axis and moving into open position and fully latched position. A ratchet (3) is moved into holding position, where the latch is held by the ratchet in the fully latched position. Additional kinematics is applied to the latch, where kinematics is coupled to an elastic resistance in a pivoting and to the latch in an undetachable manner.

Description

Die vorliegende Erfindung betrifft ein Kraftfahrzeugschloß mit den Merkmalen des Oberbegriffs von Anspruch 1. Vorliegend sind unter dem "Kraftfahrzeugschloß" alle Arten von Seiten-, Hauben- und Klappenschlössem zusammengefaßt.The present invention relates to a motor vehicle lock with the features of the preamble of claim 1. In the present case, all types of side, hood and Klappenschlössem are summarized under the "motor vehicle lock".

Das in Rede stehende Kraftfahrzeugschloß ( EP 0 589 158 A1 ), von dem die Erfindung ausgeht, ist mit den üblichen Schließelementen Schloßfalle und Sperrklinke ausgestattet. Die Schloßfalle ist um eine Schwenkachse verschwenkbar und läßt sich in eine Offenstellung und in eine Hauptschließstellung bringen. Die Sperrklinke ist in eine Haltestellung, in der sie die Schloßfalle in der Hauptschließstellung hält, und in eine Freigabestellung bringbar. Die in der Haltestellung befindliche Sperrklinke steht in unmittelbarem Eingriff mit der Schloßfalle.The motor vehicle lock in question ( EP 0 589 158 A1 ), from which the invention proceeds, is equipped with the usual closing elements latch and pawl. The latch is pivotable about a pivot axis and can be brought into an open position and a main closed position. The pawl is in a holding position in which it holds the latch in the main closed position, and brought into a release position. The pawl in the holding position is in direct engagement with the latch.

Bei in Hauptschließstellung befindlicher Schloßfalle ist es vorgesehen, daß die Schloßfalle in kraftschlüssigem Eingriff mit einem an einer zugeordneten Kraftfahrzeugtür angeordneten Schließkeil steht, wodurch die Kraftfahrzeugtür in der geschlossenen Stellung gehalten wird. Insbesondere durch den von der Türdichtung verursachten Dichtungsgegendruck wirken in diesem Zustand hohe Haltekräfte von der Schloßfalle auf den Schließkeil und entsprechend von der Sperrklinke auf die Schloßfalle. Diese hohen Kräfte führen beim Öffnungsvorgang, der durch die Verstellung der Sperrklinke von der Haltestellung in die Freigabestellung ausgelöst wird, zu einer schlagartigen Rückstellung der Schloßfalle und entsprechend zu einer schlagartigen Öffnungsbewegung der Kraftfahrzeugtür. Ein derartig schlagartiger Öffnungsvorgang ist grundsätzlich mit hohen, ungewünschten Öffnungsgeräuschen verbunden, die auch als "Öffnungsknall" wahrgenommen werden.When located in the main closed position latch it is provided that the latch is in frictional engagement with a arranged on an associated motor vehicle door striker, whereby the motor vehicle door is held in the closed position. In particular, by the sealing gasket caused by the door seal act in this state, high holding forces of the latch on the striker and accordingly from the pawl on the latch. These high forces lead during the opening process, which is triggered by the adjustment of the pawl from the holding position to the release position, to a sudden return of the latch and corresponding to a sudden opening movement of the vehicle door. Such a sudden opening process is generally associated with high, unwanted opening noise, which are also perceived as an "opening bang".

Die hohen Öffnungsgeräusche werden u. a. dadurch verursacht, daß die Sperrklinke außer Eingriff mit der unter hoher, im wesentlichen vom beschriebenen Dichtungsgegendruck bewirkter Vorspannung stehenden Schloßfalle kommt. Die stoßartige Bewegung der Kraftfahrzeugtür führt zu einer weiteren Geräuschentwicklung.The high opening noises are caused inter alia by the fact that the pawl disengaged from under high, substantially caused by the described sealing counter-pressure biasing latch comes. The jerky movement of the vehicle door leads to a further noise.

Ferner ist durch die hohe Vorspannung der Schloßfalle die für die Verstellung der Sperrklinke von der Haltestellung in die Freigabestellung erforderliche Kraft vergleichsweise hoch, da die Reibung zwischen der Sperrklinke einerseits und der Schloßfalle andererseits entsprechend hoch ist. Die hohe Aushebekraft führt je nach konstruktiver Ausgestaltung zunächst zu einer elastischen Verformung der beim Ausheben der Sperrklinke beteiligten Komponenten. Dies sind beispielsweise Hebel, Verbindungselemente o. dgl.. Nach erfolgtem Ausheben der Sperrklinke werden diese Komponenten schlagartig in ihren ursprünglichen Zustand überführt, was weitere Öffnungsgeräusche oder sogar einen Öffnungsknall hervorruft.Furthermore, the force required for the adjustment of the pawl from the holding position to the release position force is relatively high due to the high bias of the latch, since the friction between the pawl on the one hand and the latch on the other hand is correspondingly high. The high Aushebekraft leads depending on the structural design initially to an elastic deformation of the components involved in lifting the pawl. These are, for example, levers, fasteners o. The like .. After completion of the pawl these components are suddenly transferred to their original state, causing more opening noise or even an opening bang.

Eine Möglichkeit zur Reduzierung der beim Öffnungsvorgang auftretenden Kräfte und Geschwindigkeiten - und damit der entstehenden Öffnungsgeräusche - zeigt die nicht veröffentlichte, auf die Anmelderin zurückgehende DE 10 2004 034 628.3 . Das hier offenbarte Kraftfahrzeugschloß zeigt neben den oben beschriebenen Schließelementen einen Schließhilfsantrieb, der während jedes Öffnungsvorgangs vor dem Ausheben der Sperrklinke die Schloßfalle in eine Überhubstellung verstellt, so daß das Ausheben der Sperrklinke selbst nahezu kein Öffnungsgeräusch verursacht. Anschließend wird die Schloßfalle mit geringer Geschwindigkeit durch den Schließhilfsantrieb in die Offenstellung überführt.One way to reduce the forces and speeds occurring during the opening process - and thus the resulting opening noise - shows the unpublished, attributable to the applicant DE 10 2004 034 628.3 , The motor vehicle lock disclosed here shows, in addition to the closing elements described above, a closing auxiliary drive which adjusts the latch in an overstroke position during each opening operation prior to lifting the pawl, so that the lifting of the pawl itself causes almost no opening noise. Subsequently, the latch is transferred at low speed by the auxiliary closing drive in the open position.

Eine weitere Möglichkeit zur Reduzierung der für die Verstellung der Sperrklinke von der Haltestellung in die Freigabestellung benötigten Aushebekraft zeigt die ebenfalls auf die Anmelderin zurückgehende, ebenfalls nicht veröffentlichte DE 103 12 304.0 . Hier sind wiederum die Schließelemente Schloßfalle und Sperrklinke vorgesehen, wobei eine mit der Schloßfalle gekoppelte Zusatzkinematik vorgesehen ist, die bei einer Rückstellbewegung der Schloßfalle aus der Hauptschließstellung heraus in Richtung der Offenstellung ebenfalls verstellt wird. Die Zusatzkinematik ist derart mit der Sperrklinke gekoppelt, daß die in der Haltestellung befindliche Sperrklinke die Zusatzkinematik blockiert und dadurch die Schloßfalle in der Hauptschließstellung hält. Die Zusatzkinematik ist als Untersetzungsgetriebe ausgestaltet, so daß die für die Verstellung der Sperrklinke von der Haltestellung in die Freigabestellung erforderliche Kraft mangels hoher Reibung vergleichsweise gering ist.Another way to reduce the required for the adjustment of the pawl of the holding position in the release position Aushebekraft shows also attributable to the applicant, also not published DE 103 12 304.0 , Here, in turn, the closing elements lock catch and pawl are provided, wherein a coupled with the lock latch additional kinematics is provided, which is also adjusted in a return movement of the latch from the main closed position in the direction of the open position. The additional kinematics is so coupled to the pawl that the pawl located in the holding position blocks the additional kinematics and thereby holds the latch in the main closed position. The additional kinematics is designed as a reduction gear, so that the for Adjustment of the pawl from the holding position to the release position required force is relatively low due to lack of high friction.

Der vorliegenden Erfindung liegt das Problem zugrunde, das bekannte Kraftfahrzeugschloß derart auszugestalten und weiterzubilden, daß eine Reduzierung des Öffnungsgeräuschs mit minimalem konstruktivem Aufwand gewährleistet ist.The present invention is based on the problem, the known motor vehicle lock in such a way and further develop that a reduction of the opening noise is guaranteed with minimal design effort.

Das obige Problem wird bei einem Kraftfahrzeugschloß mit den Merkmalen des Oberbegriffs von Anspruch 1 durch die Merkmale des kennzeichnenden Teils von Anspruch 1 gelöst. Bevorzugte Ausgestaltungen und Weiterbildungen sind Gegenstand der Unteransprüche.The above problem is solved in a motor vehicle lock with the features of the preamble of claim 1 by the features of the characterizing part of claim 1. Preferred embodiments and further developments are the subject of the dependent claims.

Wesentlich ist zunächst die schwenkbare und unlösbare Anlenkung der Zusatzkinematik an die Schloßfalle. Damit wird erreicht, daß die Rückstellbewegung der Schloßfalle aus der Hauptschließstellung heraus in Richtung der Offenstellung gleichzeitig eine Verstellung der Zusatzkinematik bewirkt. Es ist also gewissermaßen eine Zwangskopplung zwischen der Zusatzkinematik und der Schloßfalle realisiert.Essential is first the pivotable and non-detachable articulation of additional kinematics to the latch. This ensures that the return movement of the latch from the main closing position out in the direction of the open position simultaneously causes an adjustment of the additional kinematics. So it is a kind of forced coupling between the additional kinematics and the latch realized.

Wesentlich ist weiter, daß die Zusatzkinematik mit einem nachgiebigen Widerstandselement kraftschlüssig gekoppelt oder koppelbar ist. Der Begriff "nachgiebig" ist hier weit auszulegen und bedeutet lediglich, daß eine Blokkierung der Zusatzkinematik und damit der Schloßfalle durch das Widerstandselement nicht vorgesehen ist. Mit "koppelbar" ist gemeint, daß eine Kraftwirkung vom Widerstandselement ggf. erst nach Beginn der Rückstellbewegung einsetzt. Sofern eine Kraftwirkung vom Widerstandselement auf die Schloßfalle schon bei in der Hauptschließstellung befindlicher Schloßfalle vorgesehen ist, ist hierdurch die dem Ausheben der Sperrklinke entgegenwirkende Reibung entsprechend reduziert, weil die Kraftwirkung des Widerstandseiements in Schließrichtung gerichtet ist.It is also essential that the additional kinematics can be frictionally coupled or coupled with a resilient resistance element. The term "yielding" here is to be construed broadly and merely means that a blockage of the additional kinematics and thus the latch is not provided by the resistance element. By "coupled" is meant that a force from the resistance element, if necessary, only after the beginning of the return movement begins. If a force effect is provided by the resistance element on the latch already in the main closing position befindlicher latch, thereby the lifting of the pawl counteracting friction is reduced accordingly, because the force of the Widerstandseiements is directed in the closing direction.

Die Anordnung ist nun so getroffen, daß die Kraftwirkung des Widerstandselements auf die Zusatzkinematik eine Hemmung eines ersten Bewegungsabschnitts der Rückstellbewegung der Schloßfalle aus der Hauptschließstellung heraus in Richtung der Offenstellung bewirkt. Es ist also so, daß nach der Verstellung der Sperrklinke von der Haltestellung in die Freigabestellung die Rückstellbewegung der Schloßfalle durch die Kraftwirkung des Widerstandselements auf die Zusatzkinematik gehemmt, nicht aber blockiert wird. Entsprechend erfolgt die Rückstellbewegung in einem ersten Bewegungsabschnitt mit vergleichsweise geringer Geschwindigkeit. Eine schlagartige Rückstellbewegung der Schloßfalle mit den damit verbundenen Öffnungsgeräuschen kann damit sicher ausgeschlossen werden.The arrangement is now made such that the force effect of the resistance element on the additional kinematics causes an inhibition of a first movement section of the return movement of the lock latch out of the main closed position in the direction of the open position. So it is that after the Adjustment of the pawl of the holding position in the release position, the return movement of the lock latch inhibited by the force of the resistive element on the additional kinematics, but is not blocked. Accordingly, the return movement takes place in a first movement section with a comparatively low speed. A sudden return movement of the latch with the associated opening noise can thus be safely excluded.

Die bevorzugte Ausgestaltung gemäß Anspruch 2 ermöglicht zusätzlich eine Reduzierung der für die Verstellung der Sperrklinke von der Haltestellung in die Freigabestellung erforderlichen Kraft, was wiederum zu einer Reduzierung des Öffnungsgeräusches führt. Allerdings kann es je nach konstruktiven Randbewegungen auch vorteilhaft sein, daß die Sperrklinke gemäß Anspruch 3 in unmittelbaren Eingriff mit der Schloßfalle bringbar ist.The preferred embodiment according to claim 2 additionally allows a reduction of the force required for the adjustment of the pawl from the holding position to the release position, which in turn leads to a reduction of the opening noise. However, it may also be advantageous, depending on the structural edge movements, that the pawl according to claim 3 can be brought into direct engagement with the latch.

Für die Ausgestaltung des Widerstandselements sind zahlreiche Möglichkeiten bekannt. Die Ansprüche 4 und 5 zeigen zwei bevorzugte Varianten.For the embodiment of the resistive element numerous possibilities are known. Claims 4 and 5 show two preferred variants.

Die Ansprüche 6 und 7 zeigen bevorzugte Möglichkeiten der Hemmung des ersten Bewegungsabschnitts der Rückstellbewegung, ohne die Rückstellbewegung im übrigen zu behindern.The claims 6 and 7 show preferred ways of inhibiting the first movement portion of the return movement, without hindering the restoring movement otherwise.

Die konstruktive Ausgestaltung der Zusatzkinematik gemäß der Ansprüche 8 bis 10 führt zu besonders einfachen und effektiven Lösungen.The structural design of the additional kinematics according to claims 8 to 10 leads to particularly simple and effective solutions.

Im folgenden wird die Erfindung anhand der Zeichnung unter Bezugnahme auf bevorzugte Ausführungsbeispiele näher erläutert. Im Zuge dieser Erläuterungen werden weitere Ausgestaltungen und Weiterbildungen sowie weitere Merkmale, Eigenschaften, Aspekte und Vorteile der Erfindung mit erläutert. In der Zeichnung zeigt

Fig. 1
ein Kraftfahrzeugschloß mit einer Schloßfalle, einer Sperrklinke und einer Zusatzkinematik in Hauptschließstellung,
Fig. 2
ein weiteres Kraftfahrzeugschloß mit Schloßfalle, Sperrklinke und Zusatzkinematik in Hauptschließstellung.
In the following the invention will be explained in more detail with reference to the drawing with reference to preferred embodiments. In the course of this explanation, further refinements and developments as well as further features, properties, aspects and advantages of the invention will be explained. In the drawing shows
Fig. 1
a motor vehicle lock with a latch, a pawl and additional kinematics in the main closed position,
Fig. 2
Another motor vehicle lock with latch, pawl and additional kinematics in the main closed position.

In der Zeichnung zeigt Fig. 1 ein Kraftfahrzeugschloß 1 mit einer Schloßfalle 2, die in kraftschlüssigen Eingriff mit einem an einer zugeordneten Kraftfahrzeugtür angeordneten Schließkeil 2a bringbar ist, und einer Sperrklinke 3. Die Schloßfalle 2 ist um eine Schwenkachse 4 verschwenkbar und in eine Offenstellung, eine Hauptschließstellung und in eine Vorschließstellung bringbar. Je nach Anwendungsfall kann es auch vorteilhaft sein, auf die Vorschließstellung zu verzichten. Die Sperrklinke 3 ist in die in Fig. 1 dargestellte Haltestellung sowie in eine Freigabestellung bringbar, wobei die in Haltestellung befindliche Sperrklinke 3 die Schloßfalle 2 in der Hauptschließstellung sowie in der Vorschließstellung hält. Die Verstellung der Sperrklinke 3 in die Freigabestellung ist bei dem in Fig. 1 dargestellten Ausführungsbeispiel mit einem Verschwenken der Sperrklinke 3 um eine Schwenkachse 5 rechtsherum verbunden. Die in der Freigabestellung befindliche Sperrklinke 3 ist in Fig. 1 gestrichelt dargestellt.1 shows a motor vehicle lock 1 with a latch 2, which is engageable in frictional engagement with a arranged on an associated motor vehicle door striker 2a, and a pawl 3. The latch 2 is pivotable about a pivot axis 4 and in an open position, a main closing position and in a Vorschließstellung brought. Depending on the application, it may also be advantageous to dispense with the prelocking. The pawl 3 can be brought into the holding position shown in FIG. 1 and in a release position, wherein the pawl 3 in the holding position holds the latch 2 in the main closed position and in the prelocking position. The adjustment of the pawl 3 in the release position is connected in the embodiment shown in FIG. 1 with a pivoting of the pawl 3 about a pivot axis 5 rechtsherum. The pawl 3 located in the release position is shown by dashed lines in FIG.

Der Schloßfalle 2 ist eine Zusatzkinematik 6, 7 zugeordnet, die vorliegend als Hebelkinematik ausgestaltet ist und im folgenden noch ausführlich erläutert wird.The latch 2 is an additional kinematics 6, 7 assigned, which is configured in the present case as a lever kinematics and will be explained in more detail below.

Wesentlich ist, daß die Zusatzkinematik 6, 7 schwenkbar und unlösbar über die Schwenkachse 8 an die Schloßfalle 2 angelenkt ist. Es wurde bereits darauf hingewiesen, daß dadurch die Zusatzkinematik 6, 7 mit der Schloßfalle 2 zwangsgekoppelt ist, so daß die Rückstellbewegung der Schloßfalle 2 aus der Hauptschließstellung heraus in Richtung der Offenstellung, in Fig. 1 rechtsherum, eine entsprechende Verstellung der Zusatzkinematik 6, 7 bewirkt.It is essential that the additional kinematics 6, 7 is articulated pivotably and permanently on the pivot axis 8 to the latch 2. It has already been noted that this additional kinematics 6, 7 is forcibly coupled to the latch 2, so that the return movement of the latch 2 from the main closed position in the direction of the open position, in Fig. 1 right around, a corresponding adjustment of the additional kinematics 6, 7th causes.

Wesentlich ist weiter, daß die Zusatzkinematik 6, 7 mit einem nachgiebigen Widerstandselement 9 kraftschlüssig gekoppelt ist und daß die Kraftwirkung des Widerstandselements 9 auf die Zusatzkinematik 6, 7 eine Hemmung eines ersten Bewegungsabschnitts der Rückstellbewegung der Schloßfalle 2 bewirkt. Dabei ist diese kraftschlüssige Kopplung jedenfalls in dem ersten Bewegungsabschnitt der Rückstellbewegung gewährleistet, so daß ein schlagartiger Öffnungsvorgang, wie oben beschrieben, verhindert wird. Bei dem ersten Bewegungsabschnitt der Rückstellbewegung kann es sich beispielsweise um die ersten 25 % der Rückstellbewegung handeln.It is also essential that the additional kinematics 6, 7 is frictionally coupled with a resilient resistance element 9 and that the force effect of the resistance element 9 on the additional kinematics 6, 7 causes an inhibition of a first movement portion of the return movement of the lock catch 2. In this case, this frictional coupling is ensured in any case in the first movement section of the return movement, so that a sudden opening operation, as described above, is prevented. The first movement section of the return movement can be, for example, the first 25% of the return movement.

Das Widerstandselement 9 kann so ausgestaltet und angeordnet sein, daß es bereits bei in Hauptschließstellung befindlicher Schloßfalle 2 eine Kraft auf die Zusatzkinematik 6, 7 im Sinne einer Vorspannung der Zusatzkinematik 6, 7 ausübt. Es kann aber auch vorteilhaft sein, daß das Widerstandselement 9 eine entsprechende Kraft erst nach Beginn der Rückstellbewegung auf die Zusatzkinematik 6, 7 ausübt.The resistance element 9 can be configured and arranged so that it already exerts a force on the additional kinematics 6, 7 in the sense of a bias of the additional kinematics 6, 7 when the lock catch 2 is in the main locking position. But it may also be advantageous that the resistance element 9 exerts a corresponding force only after the beginning of the return movement to the additional kinematics 6, 7.

Bei dem in Fig. 1 dargestellten Ausführungsbeispiel ist die Sperrklinke 3 derart mit der Zusatzkinematik 6, 7 gekoppelt, daß die in Haltestellung befindliche Sperrklinke 3 in blockierendem Eingriff mit der Zusatzkinematik 6, 7 steht und dadurch die Schloßfalle 2 in der Hauptschließstellung sowie in der Vorschließstellung hält. Der damit verbundene Vorteil hinsichtlich einer möglichen Reduzierung der Aushebekraft wurde bereits erläutert.In the embodiment shown in Fig. 1, the pawl 3 is coupled with the additional kinematics 6, 7, that the pawl 3 in the holding position is in blocking engagement with the additional kinematics 6, 7 and thereby the latch 2 in the main closed position and in the prelocking position holds. The associated advantage in terms of a possible reduction of Aushebekraft has already been explained.

Das in Fig. 2 dargestellte, ebenfalls bevorzugte Ausführungsbeispiel zeigt eine getrennte Anordnung von Zusatzkinematik 6, 7 einerseits und Sperrklinke 3 andererseits. Fig. 2 zeigt die in der Haltestellung befindliche Sperrklinke 3, die in unmittelbar blockierendem Eingriff mit einer Hauptrast 10 der Schloßfalle 2 steht. Es darf darauf hingewiesen werden, daß je nach Anwendungsfall eine entsprechende Vorrast vorgesehen sein kann.The illustrated in Fig. 2, also preferred embodiment shows a separate arrangement of additional kinematics 6, 7 on the one hand and pawl 3 on the other. Fig. 2 shows the pawl 3 located in the holding position, which is in direct blocking engagement with a main catch 10 of the latch 2. It may be noted that, depending on the application, a corresponding pre-restraint can be provided.

Hinsichtlich der erfindungsgemäßen Hemmung der Rückstellbewegung der Schloßfalle 2 folgen beide in den Figuren 1 und 2 dargestellten Ausführungsbeispiele dem gleichen Grundprinzip. Alle hierzu getroffenen Aussagen sind daher uneingeschränkt auf beide Ausführungsbeispiele anwendbar.With regard to the inhibition according to the invention of the return movement of the lock catch 2, both exemplary embodiments shown in FIGS. 1 and 2 follow the same basic principle. All statements made for this purpose are therefore applicable without restriction to both embodiments.

Für die Ausgestaltung des Widerstandselements 9 sind aus dem Stand der Technik zahlreiche Möglichkeiten bekannt. Eine einfache und kostengünstige Variante besteht darin, das Widerstandselement 9 als Federelement auszugestalten. Das Federelement kann beispielsweise eine Metall- oder Gummifeder oder aber eine pneumatisch wirkende Feder sein.For the embodiment of the resistive element 9 numerous possibilities are known from the prior art. A simple and cost-effective variant is to design the resistance element 9 as a spring element. The spring element may for example be a metal or rubber spring or a pneumatically acting spring.

Grundsätzlich ist bei der Auslegung des Widerstandselements 9 zu beachten, daß das Widerstandselement 9 nach dem Durchlaufen des ersten Bewegungsabschnitts der Rückstellbewegung der Schloßfalle 2 möglichst keine weitere, dann unerwünschte, Hemmung der Rückstellbewegung verursacht. Dies läßt sich beispielsweise dadurch realisieren, daß das Widerstandselement 9 so angeordnet und ausgestaltet ist, daß nach dem Durchlaufen des ersten Bewegungsabschnitts der Rückstellbewegung der Schloßfalle 2 gleichzeitig ein Totpunkt des Widerstandselements 9 durchlaufen wird, so daß die Rückstellbewegung vom Widerstandselement 9 nicht mehr gehemmt, sondern nunmehr gefördert wird. Hierfür ist das Widerstandselement 9 in entsprechender Weise an einem feststehenden Gehäuse o. dgl. des Kraftfahrzeugschlosses 1 einerseits und an der Zusatzkinematik 6, 7 andererseits schwenkbar angelenkt. Dies ist in Fig. 1 dargestellt. Das Widerstandselement 9 ist hier als Schraubenfeder ausgestaltet.In principle, it should be noted in the design of the resistance element 9 that the resistance element 9 causes after passing through the first movement section of the return movement of the lock latch 2 as possible no further, then undesirable, inhibition of the return movement. This leaves itself, for example, realize that the resistance element 9 is arranged and designed so that after passing through the first movement section of the return movement of the latch 2 simultaneously a dead center of the resistive element 9 is traversed, so that the return movement of the resistive element 9 is no longer inhibited, but now promoted becomes. For this purpose, the resistance element 9 in a corresponding manner to a fixed housing o. The like. Of the motor vehicle lock 1 on the one hand and on the additional kinematics 6, 7 pivotally hinged on the other hand. This is shown in Fig. 1. The resistance element 9 is designed here as a helical spring.

Fig. 2 zeigt ebenfalls ein als Federelement ausgestaltetes Widerstandselement 9. Hier ist das Widerstandselement 9 allerdings eine Schenkelfeder. Der Durchlauf eines Totpunkts des Widerstandselements 9 ist hier nicht vorgesehen.FIG. 2 likewise shows a resistance element 9 designed as a spring element. Here, however, the resistance element 9 is a leg spring. The passage of a dead center of the resistive element 9 is not provided here.

In weiterer bevorzugter Ausgestaltung kann das Widerstandselement 9 auch als Dämpfungselement ausgestaltet sein. Hier sind beispielsweise auf Reibung basierende oder hydraulische Dämpfungselemente bekannt. Das als Dämpfungselement ausgestaltete Widerstandselement 9 kann beispielsweise einen in einem Zylinder laufenden Kolben aufweisen, der die gewünschte Dämpfung durch die Reibung zwischen dem Kolben und der Zylinderwand erzielt. Der Kolben kann aber auch mit einer Flüssigkeit gefüllt sein, die bei einer Verstellung des Dämpfungselements von einem Zylinderraum in den anderen strömt. Es kann aber auch vorgesehen werden, daß das Widerstandselement 9 reibschlüssig mit einer Komponente der Zusatzkinematik 6, 7 verbunden ist, so daß wiederum ein entsprechender Dämpfungseffekt erreicht wird.In a further preferred embodiment, the resistance element 9 can also be designed as a damping element. Here, for example friction-based or hydraulic damping elements are known. The resistance element 9 designed as a damping element can, for example, have a piston running in a cylinder, which achieves the desired damping due to the friction between the piston and the cylinder wall. But the piston can also be filled with a liquid which flows in an adjustment of the damping element from one cylinder chamber into the other. But it can also be provided that the resistance element 9 is frictionally connected to a component of the additional kinematics 6, 7, so that in turn a corresponding damping effect is achieved.

In besonders bevorzugter Ausgestaltung ist die Zusatzkinematik 6, 7 bei in Hauptschließstellung befindlicher Schloßfalle 2 ein Untersetzungsgetriebe, so daß die von der Schloßfalle 2 auf die Zusatzkinematik 6, 7 wirkende Kraft in eine geringere von der Zusatzkinematik 6, 7 auf das Widerstandselement 9 wirkende Kraft überführt wird. Dann ist es so, daß für die gewünschte Hemmung des ersten Bewegungsabschnitts der Rückstellbewegung vom Widerstandselement 9 eine vergleichsweise geringe Kraft aufgebracht werden muß.In a particularly preferred embodiment, the additional kinematics 6, 7 at befindlichem in the main locking position latch 2, a reduction gear, so that the action of the latch 2 on the additional kinematics 6, 7 force transferred to a lower force acting from the additional kinematics 6, 7 on the resistance element 9 force becomes. Then it is so that for the desired inhibition of the first movement portion of the return movement of the resistance element 9, a comparatively small force must be applied.

Das Widerstandselement 9 kann entsprechend schwach und damit kostengünstig ausgelegt werden.The resistance element 9 can be designed correspondingly weak and therefore cost.

Es darf darauf hingewiesen werden, daß die Hemmung der Rückstellbewegung ausschließlich in einem ersten Bewegungsabschnitt gewünscht ist, um den weiteren Öffnungsvorgang nicht zu behindern. Vor diesem Hintergrund ist es besonders vorteilhaft, wenn das Untersetzungsverhältnis der Zusatzkinematik 6, 7 über die Rückstellbewegung der Schloßfalle 2 gesehen abnimmt, so daß die oben beschriebene hemmende Wirkung des Widerstandselements 9 entsprechend abnimmt.It should be noted that the inhibition of the return movement is desired only in a first movement section, so as not to hinder the further opening process. Against this background, it is particularly advantageous if the reduction ratio of the additional kinematics 6, 7 decreases seen over the return movement of the lock latch 2, so that the above-described inhibitory effect of the resistive element 9 decreases accordingly.

In konsequenter Weiterführung des obigen Gedankens ist die Zusatzkinematik 6, 7 bei in Offenstellung befindlicher Schloßfalle 2 schließlich ein Übersetzungsgetriebe, so daß die von der Schloßfalle 2 auf die Zusatzkinematik 6, 7 wirkende Kraft in eine höhere von der Zusatzkinematik 6, 7 auf das Widerstandselement 9 wirkende Kraft überführt wird. Dann ist es vorzugsweise so, daß die von der Schloßfalle 2 auf die Zusatzkinematik 6, 7 wirkende Kraft in Öffnungsrichtung die hemmende Wirkung des Widerstandselements 9 bei weitem überwiegt.In a logical continuation of the above idea is the additional kinematics 6, 7 in befindlichem in open position latch 2 finally a transmission gear, so that the action of the latch 2 on the additional kinematics 6, 7 force in a higher of the additional kinematics 6, 7 on the resistance element acting force is transferred. Then, it is preferably such that the force acting on the additional kinematics 6, 7 of the latch 2 in the opening direction far outweighs the inhibiting effect of the resistive element 9.

Insgesamt ist eine optimale Abstimmung des Unter- bzw. Übersetzungsverhältnisses der Zusatzkinematik 6, 7 auf das Widerstandselement 9 und auf die üblicherweise in Öffnungsrichtung zu erwartende Vorspannung der Schloßfalle 2 zu ermitteln. Insbesondere ist in diese Überlegung der zu erwartende Dichtungsgegendruck einzubeziehen. Ferner ist bei dem in Fig. 1 dargestellten Ausführungsbeispiel zu beachten, daß trotz der ggf. vorhandenen Kraftwirkung des Widerstandselements 9 auf die Zusatzkinematik 6, 7 bei in Haltestellung befindlicher Sperrklinke 3 eine hinreichende Blockierkraft zwischen Sperrklinke 3 und Zusatzkinematik 6, 7 verbleibt, so daß sich das Kraftfahrzeugschloß 1 grundsätzlich in einem definierten Zustand befindet.Overall, an optimal vote of the lower or transmission ratio of the additional kinematics 6, 7 to the resistance element 9 and to be expected in the opening direction usually to be expected bias of the latch 2. In particular, the expected sealing back pressure is to be included in this consideration. Furthermore, it should be noted in the embodiment shown in FIG. 1 that, despite the possibly existing force effect of the resistive element 9 on the additional kinematics 6, 7 in befindlichem holding position pawl 3 a sufficient blocking force between pawl 3 and additional kinematics 6, 7 remains, so that the motor vehicle lock 1 is basically in a defined state.

Bei den in Fig. 1 und 2 dargestellten und insoweit bevorzugten Ausführungsbeispielen bildet die Zusatzkinematik 6, 7 zusammen mit der Schloßfalle 2 eine Viergelenkkinematik. Hierfür weist die Zusatzkinematik 6, 7 einen um eine Schwenkachse verschwenkbaren Schließhebel 6 und einen an die Schloßfalle 2 einerseits und an den Schließhebel 6 andererseits schwenkbar angelenkten Zwischenhebel 7 auf. Für die Anlenkung des Zwischenhebels 7 an der Schloßfalle 2 und am Schließhebel 6 sind entsprechende Schwenkachsen 12, 13 vorgesehen. Die Schwenkachse 4 der Schloßfalle 2, die Schwenkachse 12 zwischen Schloßfalle 2 und Zwischenhebel 7, die Schwenkachse 13 zwischen Zwischenhebel 7 und Schließhebel 6 und die Schwenkachse 11 des Schließhebels 6 bilden also zusammen eine Viergelenkkinematik.In the exemplary embodiments illustrated in FIGS. 1 and 2, the additional kinematics 6, 7 together with the latch 2 form a four-joint kinematics. For this purpose, the additional kinematics 6, 7 pivotable about a pivot axis closing lever 6 and a hinged to the latch 2 on the one hand and on the closing lever 6 on the other hand hinged Intermediate lever 7 on. For the articulation of the intermediate lever 7 to the latch 2 and the closing lever 6 corresponding pivot axes 12, 13 are provided. The pivot axis 4 of the latch 2, the pivot axis 12 between latch 2 and intermediate lever 7, the pivot axis 13 between intermediate lever 7 and closing lever 6 and the pivot axis 11 of the closing lever 6 thus together form a four-joint kinematics.

Es gibt eine Reihe von Möglichkeiten, wie das Widerstandselement 9 mit der Zusatzkinematik 6, 7 gekoppelt sein kann. In besonders bevorzugter Ausgestaltung ist das Widerstandselement 9 bei der oben beschriebenen Anordnung mit dem Schließhebel 6 gekoppelt. Dadurch läßt sich die Getriebecharakteristik der Viergelenkkinematik optimal ausnutzen.There are a number of ways that the resistance element 9 can be coupled to the additional kinematics 6, 7. In a particularly preferred embodiment, the resistance element 9 is coupled in the arrangement described above with the closing lever 6. As a result, the transmission characteristics of the four-joint kinematics can be optimally utilized.

In bevorzugter Ausgestaltung schließt bei in Hauptschließstellung befindlicher Schloßfalle 2 der Zwischenhebel 7 mit dem Schließhebel 6 einen stumpfen Winkel ein, so daß das Widerstandselement 9 eine sehr geringe Kraft aufbringen muß, um die Rückstellbewegung der Schloßfalle 2 wirksam zu hemmen. Der Zwischenhebel 7 bildet mit dem Schließhebel 6 eine Kniehebelmechanik.In a preferred embodiment closes when in the main locking position located latch 2, the intermediate lever 7 with the closing lever 6 an obtuse angle, so that the resistance element 9 must apply a very small force to effectively inhibit the return movement of the latch 2. The intermediate lever 7 forms with the closing lever 6 a toggle mechanism.

Wird also in dem in Fig. 1 und 2 dargestellten Ausgangszustand die Sperrklinke 3 aus der dargestellten Haltestellung in die Freigabestellung überführt, so bewirkt der Dichtungsgegendruck über den Schließkeil 2a und eine ggf. vorhandene Federvorspannung der Schloßfalle 2 eine Verstellung der Schloßfalle 2 in Richtung der Offenstellung. Gegen diese Verstellung der Schloßfalle 2 arbeitet das auf den Schließhebel 6 wirkende Widerstandselement 9. In diesem Zustand liefert die Zusatzkinematik 6, 7 ein hohes Untersetzungsverhältnis, so daß mit einer geringen Kraftwirkung des Widerstandselements 9 auf die Zusatzkinematik 6, 7 eine große Kraftwirkung von der Zusatzkinematik 6, 7 auf die Schloßfalle 2 bewirkt wird. Dadurch wird die Rückstellbewegung der Schloßfalle 2 gehemmt, aber nicht blockiert. Bei weiterer Verstellung der Schloßfalle 2 in Richtung der Offenstellung knickt der vom Schließhebel 6 und vom Zwischenhebel 7 gebildete Kniehebel immer weiter ein, so daß das Untersetzungsverhältnis der Zusatzkinematik 6, 7 abnimmt.Thus, if in the initial state shown in Fig. 1 and 2, the pawl 3 transferred from the illustrated holding position in the release position, the sealing back pressure causes via the striker 2a and a possibly existing spring bias of the latch 2, an adjustment of the latch 2 in the direction of the open position , In this state, the additional kinematics 6, 7 provides a high reduction ratio, so that with a small force of the resistive element 9 on the additional kinematics 6, 7, a large force from the additional kinematics 6, 7 is effected on the latch 2. As a result, the return movement of the latch 2 is inhibited, but not blocked. Upon further adjustment of the lock catch 2 in the direction of the open position of the toggle lever formed by the closing lever 6 and the intermediate lever 7 continues to buckle, so that the reduction ratio of the additional kinematics 6, 7 decreases.

Bei entsprechender Auslegung wird die weitere Rückstellbewegung der Schloßfalle 2 durch das Widerstandselement 9 nicht wesentlich, vorzugsweise gar nicht, behindert. Bei dem in Fig. 1 dargestellten Ausführungsbeispiel ist es wie erläutert zusätzlich so, daß nach dem Durchlaufen des ersten Bewegungsabschnitts der Rückstellbewegung ein Totpunkt des Widerstandselements 9 durchlaufen wird.With appropriate design, the further return movement of the latch 2 by the resistance element 9 is not essential, preferably not at all, handicapped. In the embodiment shown in Fig. 1, it is as explained in addition so that after passing through the first movement section of the return movement, a dead center of the resistive element 9 is traversed.

Bei der Auslegung der Anordnung ist schließlich zu beachten, daß bei den dargestellten Ausführungsbeispielen mit fortschreitender Rückstellbewegung der Schloßfalle 2 das Untersetzungsverhältnis der Zusatzkinematik 6, 7 zwar abnimmt, die jeweils als Federelement ausgestalteten Widerstandselemente 9 aber weiter ausgelenkt werden, was zu einer steigenden Federkraft führt. Wesentlich ist bei der Auslegung der Anordnung, daß nach Durchlaufen des ersten Bewegungsabschnitts der Rückstellbewegung das Widerstandselement 9 trotz steigender Federkraft nicht mehr zu einer Behinderung der weiteren Rückstellbewegung führt. Dies läßt sich beispielsweise durch die oben beschriebene Über-Totpunkt-Anordnung des Widerstandselements 9 (Fig. 1) oder aber durch eine entsprechende Auslegung der Zusatzkinematik 6, 7 mit veränderlichem Untersetzungsverhältnis (Fig. 1, 2) realisieren.In the design of the arrangement is finally to be noted that in the illustrated embodiments with progressive return movement of the latch 2, the reduction ratio of the additional kinematics 6, 7 decreases, but each configured as a spring element resistance elements 9 are further deflected, resulting in an increasing spring force. It is essential in the design of the arrangement that after passing through the first movement section of the return movement, the resistance element 9 no longer leads to a hindrance to the further return movement despite increasing spring force. This can be achieved, for example, by the over-dead-center arrangement of the resistance element 9 (FIG. 1) described above or by a corresponding design of the additional kinematics 6, 7 with a variable reduction ratio (FIGS. 1, 2).

Schließlich darf darauf hingewiesen werden, daß die Ausgestaltung der Zusatzkinematik 6, 7 nicht auf die dargestellte Form eines Hebelgetriebes beschränkt ist. Für die Ausgestaltung der Zusatzkinematik 6, 7 können grundsätzlich alle geeigneten aus dem Stand der Technik bekannten Getriebearten Anwendung finden.Finally, it should be noted that the configuration of the additional kinematics 6, 7 is not limited to the illustrated shape of a lever mechanism. For the design of the additional kinematics 6, 7 can basically find all suitable known from the prior art types of transmission application.

Claims (10)

  1. Motor vehicle lock with a lock latch (2) and a ratchet (3), the lock latch (2) being able to pivot about a pivot axis (4), the lock latch (2) being able to be moved into an open position and into a main locking position as well as into a pre-locking position which may be present, the ratchet (3) being able to be moved into at least one holding position and into a release position, and the ratchet (3) located in the holding position in any case retaining the lock latch (2) in the main locking position, characterized in that additional kinematics (6, 7) associated with the lock latch (2) are provided and in that the additional kinematics (6, 7) are pivotably and undetachably coupled to the lock latch (2), in that the resetting motion of the lock latch (2) out of the main locking position in the direction towards the open position causes a displacement of the additional kinematics (6, 7), in that the additional kinematics (6, 7) are coupled or may be coupled non-positively to a flexible resistance element (9), and in that the action of the force of the resistance element (9) on the additional kinematics (6, 7) causes an inhibition of a first motion segment of the resetting motion.
  2. Motor vehicle lock according to Claim 1, characterized in that the ratchet (3) is coupled to the additional kinematics (6, 7) such that the ratchet (3) located in the holding position is in blocking engagement with the additional kinematics (6, 7) and, as a result, retains the lock latch (2) in the main locking position and in the pre-locking position which may be present.
  3. Motor vehicle lock according to Claim 1, characterized in that the ratchet (3) located in the holding position is in direct blocking engagement with the lock latch (2), preferably with a main catch (10) or a preliminary catch, which may be present, of the lock latch (2).
  4. Motor vehicle lock according to one of the preceding claims, characterized in that the resistance element (9) is designed as a spring element.
  5. Motor vehicle lock according to one of the preceding claims, characterized in that the resistance element (9) is designed as a damping element.
  6. Motor vehicle lock according to one of the preceding claims, characterized in that the additional kinematics (6, 7) are a step-down gearing, at least with the lock latch (2) in the main locking position, so that the force acting from the lock latch (2) on the additional kinematics (6, 7) is converted into a smaller force acting from the additional kinematics (6, 7) on the resistance element (9), preferably so that the step-down ratio decreases when viewed over the resetting motion of the lock latch (2).
  7. Motor vehicle lock according to one of the preceding claims, characterized in that the additional kinematics (6, 7) are a step-up gearing, at least with the lock latch (2) in the open position, so that the force acting from the lock latch (2) on the additional kinematics (6, 7) is converted into a larger force acting from the additional kinematics (6, 7) on the resistance element (9).
  8. Motor vehicle lock according to one of the preceding claims, characterized in that the additional kinematics (6, 7), together with the lock latch (2), form a four link mechanism, in that to this end the additional kinematics (6, 7) comprise a locking lever (6) which may be pivoted about a pivot axis (11) and an intermediate lever (7) pivotably coupled to the lock latch (2), on the one hand, and to the locking lever (6), on the other hand.
  9. Motor vehicle lock according to Claim 8, characterized in that the resistance element (9) is coupled to the locking lever (6).
  10. Motor vehicle lock according to Claim 8 or 9, characterized in that the intermediate lever (7) encloses an obtuse angle with the locking lever (6) when the lock latch (2) is in the main locking position.
EP20050013185 2004-09-16 2005-06-18 Motor vehicle lock Active EP1637671B1 (en)

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DE102004045283A1 (en) 2006-03-23
EP1637671A1 (en) 2006-03-22
US20060055180A1 (en) 2006-03-16
ATE369472T1 (en) 2007-08-15
DE502005001171D1 (en) 2007-09-20
ES2289626T3 (en) 2008-02-01

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