EP2893108B1 - Motor vehicle door lock - Google Patents

Description

The invention relates to a motor vehicle door lock, with a locking mechanism consisting essentially of catch and pawl, further comprising a locking element for the locking mechanism, and with a storage element which ensures an unobstructed opening movement of the rotary latch from a closed to an open position.

In a motor vehicle door lock of the structure described above according to the DE 10 2006 032 033 A1 the storage element ensures to keep in a storage position the pawl when turning the catch from its closed position to beyond passing the pre-locking position in its release position. For this purpose, the storage element comprises a triggering element associated with the support section, which occurs upon actuation of the triggering element to reach the storage position in front of a storage stage of the rotary latch. This memory level is left after passing the pre-lock position. In this way, the storage element prevents that during the opening movement of the rotary latch, the pawl inadvertently in the catch (again) can occur. Such functional states are conceivable, inter alia, in the case of a tailgate, in the event that it has, for example, a snow load.

In a motor vehicle door lock according to the DE 40 42 678 C1 a release lever is associated with a storage lever as a storage element. In the storage position of the storage element, the pawl is held in the open position until the catch has been fully opened by manually opening an associated motor vehicle door. In this way, it is to be ensured that when the vehicle door is triggered, for example, by remote control but not completely executed, the pawl falls into the catch (again) and an opening is not (anymore) possible. Such a functional condition may occur when the motor drive for lifting the pawl after the fembedienbaren opening signal is then transferred to its original position again.

Further, to the publications EP 1818484 A1 . DE 202012002867 U1 and DE 102010061427 A1 of the prior art.

The prior art may not be satisfactory in all aspects. So is the structure according to the DE 40 42 678 C1 relatively complex and draws on a variety of levers. The DE 10 2006 032 033 A1 has brought at this point a simplification insofar as here the memory element is equipped with a release element associated with the support section. However, the memory element still works on the pawl to hold them in their release position. As soon as the functionality of the memory element is impaired in any way, consequently, the pawl can still be incident in the catch, so that then functional impairment must be feared. This is where the invention starts.

The invention is based on the technical problem of further developing such a motor vehicle door lock in such a way that the greatest possible functional reliability is provided with a structurally simple construction.

To solve this technical problem, a motor vehicle door lock with the features of claim 1 is used.

For example, according to the prior art DE 10 2006 032 033 A1 Thus, the memory element does not work on the pawl, but rather the triggering element. Because the memory element ensures that the trigger element is held during the opening movement of the catch in its inoperative position compared to the locking mechanism. D. h., The memory element ultimately works on the trigger element and not the pawl.

Thus, the pawl does not automatically engage in this constellation in the catch, the pawl is biased toward a disengaged position. This typically provides a pawl associated spring, which thus keeps the pawl from the engagement area with the catch. In this way, a particularly functionally reliable and at the same time structurally simple design is provided. Because the pawl can not interact with the rotary latch per se by their chosen bias or only when a pawl associated blocking lever acts on the pawl accordingly, so that they can come into the main latching position or interact with a main latching edge of the rotary latch.

In all other cases, the catch is free from the pawl anyway. In addition, since the storage element holds the trigger element in its inoperative position, the catch completes the opening movement virtually completely mechanically unaffected. An inadvertent blockage or obstruction of this opening movement of the rotary latch from its closed to the open position can therefore not occur in principle already. As a result, the reliability is significantly increased.

In addition, the structural design is particularly simple. Because the memory element is advantageously connected to the trigger element and interacts regularly with a storage stage. This storage stage can be provided on the catch. D. h., For the effectiveness of the memory element, it is only necessary that the memory element is applied to the memory stage and slides along and is held in this way the trigger element coupled to the trigger element in the inoperative position with respect to the locking mechanism. In any case, this applies to the entire path that the storage element completes along the storage stage.

For this purpose, the memory element advantageously has a nose interacting with the memory stage. The nose and the storage level are regularly equipped with corresponding inclined surfaces. In this way, the nose can be displaced from a latching position engaging behind the storage stage into a release position sliding along the storage stage. For a corresponding displacement movement, it is only necessary to apply the trigger element accordingly. For as soon as the trigger element is pivoted, for example, from the detent position of the nose in the release position, the corresponding inclined surfaces of the nose and the storage stage slide along each other and the nose goes from its latching behind the storage stage detent position in the release position.

As already explained, the nose and with it the storage element slides in the release position of the rotary latch along the storage stage. For this corresponds to the inoperative position of the trigger element with respect to the locking mechanism. That is, as long as the nose slides along the storage stage in the release position, the trigger element can not interact with the ratchet because it is in an inoperative position relative to the ratchet.

The storage stage is regularly designed arcuate with a matched to their distance from the axis of rotation of the rotary latch radius and can extend over an angle of less than 120 °, preferably 90 ° and more preferably over an angle of 50 °. As a result, the opening catch causes the trip element to be held in the inoperative position as long as the nose slides along the arcuate storage stage. As soon as the nose leaves or can leave the arcuate storage stage, the rotary catch can in principle be transferred into a closed position or into the closed position. Thus, in one embodiment, an angle of 47 °, that is, an extension of the arcuate storage stage over an angular range of 47 ° along an outer edge of the rotary latch executed, with a safe remote holding the release lever could be realized.

For a corresponding closing movement of the rotary latch corresponds to the fact that then slide the two inclined surfaces of one hand, the nose and on the other hand, the storage stage along each other. This happens as part of the closing movement of the catch until the catch has reached its closed position or main latching position. Then, the pawl is spent in engagement with the associated main locking edge of the rotary latch. For this purpose, the locking pawl associated blocking lever, which pivots in this case, spring assisted in a position which transfers the pawl in the main latching position of the rotary latch against the force of its own spring. The blocking lever is in turn assigned to the triggering element.

In fact, the triggering element is able, starting from the main locking position of the locking mechanism, to remove the locking lever from its bearing with respect to the locking pawl or to pivot away therefrom. As a result, the pawl is spring assisted in its disengaged position with respect to the rotary latch. At the same time, this loading of the triggering element ensures that the storage element is displaced with its nose from the previously taken behind engaging locking position with respect to the storage stage in the sliding on the storage stage along release position. Consequently, following this functional position, the catch can, without being influenced by the pawl and the triggering element, automatically move from its closed to the open position, spring-assisted. In the open position, the catch releases a previously captured locking bolt, so that then an associated vehicle door can be easily opened by an operator.

All of this succeeds in consideration of a functionally reliable structure, which manages with a minimum of required components. In fact, namely, the triggering element and the storage element are regularly designed as a unit or one piece. In this case, the assembly made of the triggering element and the storage element at least partially made of plastic be. Likewise, the catch and the storage stage can define a unit. This may also be made of plastic and metal.

Moreover, it is within the scope of the invention, when the catch additionally occupies a pre-engaged position in the described closing operation and before reaching its closed position or main detent position or can take. For this purpose, the pawl may be equipped with a further lever which is rotationally connected to the trigger element. This additional lever can interact with a survey on the catch when taking the Vorraststellung, is in principle dispensable. Here are the main benefits.

Fig. 1 bis 4

Das erfindungsgemäße Kraftfahrzeugtürschloss reduziert auf das Gesperre und die hiermit wechselwirkenden Elemente in verschiedenen Funktionsstellungen und

Fig. 5

eine perspektivische Ansicht auf ein Detail des Speicherelementes mit zugehöriger Nase.

In the following the invention will be explained in more detail with reference to a drawing showing only one exemplary embodiment; show it:

Fig. 1 to 4

The motor vehicle door lock according to the invention reduces the locking mechanism and the elements interacting therewith in various functional positions and

Fig. 5

a perspective view of a detail of the memory element with associated nose.

In the figures, a motor vehicle door lock is shown, which is composed in its basic structure of a locking mechanism 1, 2 of essentially rotary latch 1 and pawl 2. Furthermore, a trigger element 3 for the locking mechanism 1, 2 is realized. In addition, still a memory element 4 belongs to the basic structure, which ensures an unobstructed opening movement of the rotary latch 1 from a closed to an open position. The effect of the memory element 4 can be understood in particular, if the in the Fig. 1 illustrated closed position of the rotary latch 1 with the open position after Fig. 3 or the fully open position according to Fig. 4 compares.

In the context of the invention, the above-described unhindered opening movement of the rotary latch 1 is ensured from its closed to the open position in such a way that the storage element 4 holds the trigger element 3 during the opening movement of the rotary latch 1 in its respect to the locking mechanism 1, 2 inoperative position. The pawl 2 is ineffective in this case. For this purpose, in the embodiment, a not explicitly shown spring, which the pawl 2 with respect to its axis of rotation 5 in the in Fig. 1 indicated counterclockwise biasing, as indicated by a corresponding arrow in the relevant figure. D. h., The pawl 2 is biased toward a disengaged position with the catch 1.

In the in Fig. 1 shown closed position of the locking mechanism 1, 2 and the main detent position of the catch 1, the pawl 2 associated blocking lever 6 ensures that the pawl 2 rests with an edge 7 at a main ratchet 8 of the catch 1 and the edge 7 is not in the counterclockwise direction of the main ratchet 8 or main catch edge wegschwenkt. Such a Wegschwenkbewegung prevents the already mentioned blocking lever 6, which is additionally associated with the trigger element 3.

The triggering element 3 is a triggering lever 3, which is designed as Einarmhebel and coaxially mounted in comparison to the pawl 2 rotatable about the common axis or axis of rotation 5. In contrast, the release element or release lever 3 associated blocking lever 6 has its own axis or axis of rotation 9, about which the blocking lever 6 is rotatably mounted. The blocking lever 6 may also be equipped in the embodiment with a spring which biases the blocking lever 6 in the counterclockwise direction with respect to its axis of rotation 9, as another arrow in the Fig. 1 suggests.

The storage element 4 is connected according to the invention to the trigger element or the release lever 3. In fact, the storage element 4 is an arm connected at an angle to the longitudinally extended release lever 3. In the exemplary embodiment, the triggering element 4 or the relevant boom is connected at right angles or almost at right angles to the longitudinally extended triggering lever 3. In any case, define the triggering element or the release lever 3 and also the storage element 4 and the corresponding cantilever in general a structural unit 3, 4, which may be wholly or partly made of plastic.

The memory element 4 is assigned a memory stage 10. In the exemplary embodiment, the storage stage 10 is provided on the rotary latch 1 and in the present case designed as a curved web. The web can be formed in a plastic casing of the metal-made rotary latch 1. In fact, the storage stage 10 has a radius R, which is adapted to the distance of the storage stage 10 from the axis of rotation 11 of the rotary latch 1.

The memory element 4 is equipped with an interacting with the memory stage 10 nose 12, as the perspective detail view in the Fig. 5 makes it clear. The nose 12 and the memory stage 10 have corresponding inclined surfaces 13, 14, which are adapted to each other. The nose 12 can occupy a total of two different basic positions with respect to the memory stage 10.

Thus, the nose 12 is in the functional position Fig. 1 in a storage stage 10 behind engaging detent position. In contrast, the functional position corresponds to the Fig. 2 and 3 to cause the nose 12 to slide along the storage stage 10. This includes the release position of the nose 12 and consequently the release position of the memory element 4 and controlled by the memory element 4 trigger element 3. The trigger element 3 is in the release position of the locking mechanism 1, 2 free, ie is in an inoperative position. - Such a release order is also in the Fig. 4 observed, in which there is no interaction between the nose 12 on the one hand and the storage stage 10 on the other hand. In any case, the triggering element 3 in its release position, neither the pawl 2 nor the rotary latch 1 mechanically act in any way.

In the transition from the main position after the Fig. 1 with the nose 12 in rest position with respect to the storage stage 10 in the release position of the nose 12 with respect to the storage stage 10 after the Fig. 2 and 3 the nose 12 is acted upon by means of the triggering element 3 such that the two inclined surfaces 13, 14 slide along each other until the nose 12 has overlapped the memory stage 10. As a result, the nose 12 can slide along the outside or edge of the storage stage 10, as in the Fig. 2 and 3 is shown. In this release position interactions of the trigger element 3 with the locking mechanism 1, 2 are not possible because the triggering element 3 is lifted from the locking mechanism 1, 2 as it were. Since the pawl 2 in this case can not interact with the rotary latch 1 or spring-supported pivoted away from the rotary latch 1 about its axis or axis of rotation 5, the rotary latch 1 can perform an unobstructed opening movement. Because the memory element 4 holds the trigger element 3 during this opening movement of the rotary latch 1 in relation to the locking mechanism 1, 2 inoperative position.

The opening movement of the rotary latch 1 connects to the main latching position according to the Fig. 1 and is primary in the Fig. 2 and 3 shown. Once the catch 1, the functional position corresponding to Fig. 4 has reached, the nose 12 leaves the memory stage 10. Then the trigger element 3 can pivot about its axis or axis of rotation 5 in the clockwise direction (spring assisted), as in the transition from the Fig. 3 to Fig. 4 becomes clear.

As a result, the rotary latch 1 is in a kind of readiness position for a subsequent closing operation. For when the catch 1, starting from the open or fully open position after the Fig. 4 in Closing direction is acted upon such that it rotates about its axis shown there or axis of rotation 11 in a clockwise direction, starting from the functional position Fig. 4 performs, the nose 12 on the memory element 4 is able to engage behind the memory stage 10. At the end of this closing movement starting from the Fig. 4 takes the catch 1 to the position Fig. 1 or the main rest position.

Previously like an optional latch lever 2 'interact on the pawl 2 with a survey, not shown on the rotary latch 1. D. h., Before the catch 1, starting from the fully open position according to Fig. 4 the fully closed position or main position after Fig. 1 reaches, interacts said ratchet lever 2 'with the survey on the rotary latch 1. For this corresponds to a pre-locking position of the locking mechanism 1, 2, which is, however, dispensable in principle and only for the sake of completeness mentioned.

However, as soon as the catch 1 during its closing movement, ie a clockwise rotation about the axis of rotation 11, the position after the Fig. 1 achieved, the previously on the rotary latch 1 along sliding pawl 2 or its edge 7 can interact with the main ratchet 8 on the rotary latch 1. In fact, in this case, the blocking lever 6 ensures that the pawl 2 prestressed in the counterclockwise direction is incident on the said main latching stage 8. For this purpose, the blocking lever 6 - as already described in the introduction - also biased counterclockwise about its axis 9 by means of a spring.

As soon as the catch 1 the position after Fig. 1 has reached, the pawl 2 is pressed by means of the blocking lever 6 as it were in the main catch of the catch 1 or the edge 7 is pivoted to the pawl 2 in the direction of the main ratchet 8 on the catch 1 by means of the blocking lever 6. In the corresponding functional position Fig. 1 the locking mechanism 1, 2 is therefore in the main locking position. To leave this, First, the triggering element 3 must be pivoted about its axis of rotation 5 in the counterclockwise direction, as in the transition from the Fig. 1 to Fig. 2 becomes clear. In this process, not only the memory element 4 or its nose 12 leaves the memory stage 10 and its engaging detent position with respect to this memory stage 10. But at the same time also provides an edge 15 on the trigger element 3 that a voltage applied to the edge 15 pin 16 of the locking lever. 6 in the illustrated Hauptastaststellung after Fig. 1 undergoes an admission.

Actually urges the edge 15 on the trigger element 3, the pin 16 of the locking lever 6 in such a way that the blocking lever 6 in the transition from the Fig. 1 to Fig. 2 was pivoted about its axis 9 in a clockwise direction, and was against the force of the locking lever 6 associated spring. As a result, the locking lever 6 leaves with its boom 17, a nose 18 on the pawl 2, on which the boom 17 in the main latching position according to Fig. 1 initially has. As a result, the boom 17 dips into a recess 19 on the pawl 2. At the same time, the pawl 2 moves spring-assisted about its axis of rotation 5 in the counterclockwise direction and consequently away from the rotary latch 1. The functional position after Fig. 2 is reached.

The boom 17 on the blocking lever 6 only emerges from the recess 19 on the pawl 2, as it were, when the catch 1 starts moving from the functional position Fig. 4 in the main lock position according to Fig. 1 is transferred. Because then the blocking lever 6 is able to push the pawl 2 with its edge 7 in the main ratchet 8 as it were. In this process, the boom 17 of the locking lever 6 slides along the recess 19 along until the boom 17 rests on the nose 18 of the pawl 2 and the pawl 2 in the then reached the main locking position Fig. 1 blocked. Consequently, in this position, the pawl 2 can not pivot about its axis of rotation 5 in the counterclockwise direction.

The illustrated motor vehicle door lock may be designed as a motor vehicle door lock for a motor vehicle side door. In general, however, the motor vehicle door lock is a lock for a tailgate or a tailgate lock. In this respect, the additional latch lever 2 'can be omitted on the pawl 2. D. h., In this case, no two-link locking is realized, but the locking mechanism 1, 2 only in a position that in the Fig. 1 illustrated main latch position and of course the open position according to the Fig. 4 as if to assume end positions.

As already explained in the introduction, the triggering element 3 can be produced together with the storage element 4 in a common production process, in which connection a structural unit 3, 4 of mostly plastic material is used. In contrast, the additional latch lever 2 'is usually made of metal. In addition, the latch lever 2 'regularly rotatably connected to the trigger element 3.

Claims (8)

1. Motor vehicle door lock, having a locking mechanism (1, 2) substantially consisting of a catch (1) and a pawl (2), further comprising a release element (3) for the locking mechanism (1, 2), and with a storing element (4), which ensures an unhindered opening movement of the catch (1) from a closing to an opening position, wherein during the opening movement of the catch (1), the storing element (4) holds the release element (3) in a disabled position with respect to the locking mechanism, characterized in that the pawl (2) is pretensioned in direction to an disengaged position with the catch (1), and a blocking lever (6) that is interacting with the pawl (2) is assigned to the release element (3).
2. Motor vehicle door lock according to claim 1, characterized in that the storing element (4) is connected to the release element (3).
3. Motor vehicle door lock according to one of the claims 1 to 2, characterized in that a storing step (10) is assigned to the storing element (4).
4. Motor vehicle door lock according to claim 3, characterized in that the storing step (10) is provided at the catch (1).
5. Motor vehicle door lock according to claim 3 or 4, characterized in that the storing element (4) comprises a nose (12) that is interacting with the storing step (10).
6. Motor vehicle door lock according to claim 5, characterized in that the nose (12) and the storing step (10) are equipped with corresponding slanted surfaces (13, 14).
7. Motor vehicle door lock according to claim 5 or 6, characterized in that the nose (12) is relocatable from a latching position engaging behind the storing step (10) to a release position sliding along the storing step (10).
8. Motor vehicle door lock according to one of the claims 3 to 7, characterized in that the storing step (10) is designed in a curved manner with a radius (R) that is adapted to its distance to the pivot axis (11) of the catch (1) and extends in particular over an angle from smaller than 120°, preferably 90°, and even more preferred over an angle of 50°.

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