EP1620621B1 - Motor vehicle door lock - Google Patents

Abstract

The object of the present invention is a vehicle door latch with a locking mechanism (1, 2), comprising also at least one operating lever (3a, 3b) and a locking lever (4, 5). According to the invention, the operating lever (3a, 3b) contains a first partial lever (3a) and a second partial lever (3b). The locking lever (4, 5) controls a coupling element (12), optionally connecting the partial levers (3a, 3b) with each other.

Description

The invention relates to a motor vehicle door lock, with a locking mechanism, further comprising at least one actuating lever, and with a locking lever.

In a motor vehicle door lock of the embodiment described above, as exemplified in the DE 100 38 151 C2 is described, the locking lever can be coupled with the operating lever, at least to take his locking position directly. This happens in the course of a first stroke of the actuating lever. As part of a second stroke, the associated motor vehicle door lock or its locking mechanism can now be opened. Such a two-stroke operation has proven itself, and also in conjunction with an optional parental control and / or anti-theft device. However, it is necessary at this point to first transfer the anti-theft device or the child safety lock into their "off" position for unlocking the locking mechanism. This is expensive.

In addition, one knows a two-part operating lever, as in the context of the patent application DE 101 64 484 which is only to be taken into account in accordance with § 3 (2) Patent Law. However, solutions for the aforementioned problem can not be deduced from this.

That is, in such motor vehicle door locks with two-stroke movement of the actuating lever for unlocking and Opening the locking mechanism, it is still necessary to first transfer an additional anti-theft device and / or child safety device to the "off" position so that subsequently the position "unlocked" and then "open" of the locking mechanism can be assumed. In addition, the solution after the DE patent application 101 64 484 is designed relatively complex and uses a variety of components.

Incidentally, both the two-stroke operations and Einhubbetätigungen be described in the prior art. During the two-stroke operation, an associated locking mechanism or the motor vehicle door lock is first unlocked during the first stroke and then opened during the second stroke. On the other hand, the lifting operation ensures that both are unlocked and opened in the course of a single stroke. Both approaches are realized with different and sometimes complicated lever mechanisms. This is expensive. This is where the invention starts.

The invention is based on the technical problem of further developing a motor vehicle door lock of the design described above so that, in a very simple construction, both a trouble-free two-stroke operation and a one-stroke operation for opening the locking mechanism are possible.

To solve this technical problem, a generic motor vehicle door lock according to claim 1 is formed.

Although also has the DE patent application 101 64 484 via a split operating lever and the two partial levers selectively interconnecting coupling element. In contrast, however, controls in the theory of the invention, the locking lever, the coupling element, while the clutch lever and the coupling element in the DE 101 64 484 is acted upon by a security device, which may be an anti-theft device and / or a child safety device.

The present innovation thus generalizes the use of an actuating lever with a first part lever and a second part lever, which are selectively connected to each other by means of the coupling element, in such a way that now usually the already existing locking lever or a comparable locking element is used for the control of the coupling element , An additional securing device in the form of a child safety device and / or an anti-theft device is accordingly not required. Optionally, such a safety device can of course be used, as will be described in more detail below.

It has been proven to design the one part lever as an internal operating handle lever and the other part lever as an internal operating release lever. The inside handle lever may be connected to an inside door handle be, while the internal operation release lever on the locking mechanism or a release lever provided there mostly works. That is, the operating lever is usually but not limiting to the inside operating lever.

So that the locking lever or the locking element is able to control the coupling element, the locking lever has a control pin for a driving contour on the coupling element. Depending on the position of the control pin in comparison to the driving contour, both aforementioned elements ensure that the coupling element connects the two partial levers of the actuating lever with each other or not. In an alternative embodiment variant of the control pin of the locking lever can also act on a leg of a leg spring, which is arranged on the coupling element.

The coupling element is largely a coupling lever, which is pivotally mounted on the other part lever of the inner actuating lever. This other part lever is usually the inside operation release lever. At the same time, the coupling element or the clutch lever engages in a recess of the one partial lever, which is the inside operating handle lever. The coupling element itself has a receptacle for this one part lever or the inside operating handle lever.

The operating lever pivots in the context of a first stroke in locking position located in the locking lever, the locking lever so that this, that is, the locking lever, the coupling element engages the two partial levers. In principle, the locking lever can of course also provide independent of the operating lever for the required engagement of the coupling element with the two partial levers, namely by the locking lever is driven according to the motor.

It is waived, however, rather ensures the operating lever itself in the context of its first stroke for the necessary coupling of the two partial levers in befindlichem in the locking position locking lever. Because starting from this position, the two partial levers have no mechanical connection (locking lever in the "locked" position), wherein after completion of the first stroke of the actuating lever is then provided for a mechanical coupling by the engaging coupling element.

As part of a second stroke of the actuating lever now takes place the opening of the locking mechanism. For the mechanical coupling of the inner handle lever and the inner handle release lever after the first stroke of the operating lever ensures that, for example, pulling movements on the inner door handle are finally transmitted to the ratchet via the inner handle handle, the inner handle release lever and the release lever itself.

Since, according to the invention, the locking lever has the control pin for the leg spring on the coupling element, it is also possible to work with a lifting operation of the operating lever instead of the described two-stroke operation. In this case, the control pin is not attached to the locking lever, so that the coupling element at the first-time activation of the operating lever directly couples the inside operation handle lever with the inside operation release lever. By this in the course of a stroke initially prepared mechanical connection of the two aforementioned lever part with each other can be opened immediately in the course of this one stroke, the locking mechanism.

Such a Einhubbetätigung is recommended, for example, when in a motor vehicle, the motor vehicle door locks are locked automatically when driving. Then it may be desired by a vehicle occupant to be able to provide with only a single stroke for unlocking and simultaneously opening the vehicle door latch. In addition, situations are conceivable in which the motor vehicle door locks are locked manually or at the push of a button while driving or in standing from the inside. In order to distinguish this state from the fact that no locking has been made, it will work in the former case with a two-stroke, while of course unlocked vehicle door locks only one Einhubbetätigung is required to open the locking mechanism. Either way, the doctrine of invention opens the possibility, either with a one-stroke or two-stroke operation depending on the customer and the To be able to open the locking mechanism or the motor vehicle door lock. To distinguish between these two basic approaches, it is only necessary to equip the locking lever with the control pin or not.

In addition, the coupling element can be acted upon by a child safety device and / or anti-theft device. That is, the position "child safety on" or "anti-theft device on" corresponds to the fact that the coupling element is in the pivoted position, thus the two partial levers of the actuating lever are not connected to each other. In this case, the coupling element only connects the two partial levers of the actuating lever with each other when both the child safety device and the anti-theft device assume their "off" position. This includes the transfer of the locking lever to the "unlocked" position.

As a result, a motor vehicle door lock is provided, which not only convinces by a particularly simple and compact design in a two-stroke operation of the operating lever, but can also be converted in the sense of a one-stroke override. This is achieved in a simple manner in that the control pin on the locking lever is omitted, so that the coupling element in the course of a stroke is immediately incident to mechanically connect the two concerned part lever together. Optionally, the described motor vehicle door lock can also be equipped with an anti-theft and parental control function combine. Here are the main benefits.

Fig. 1 bis 3

verschiedene Funktionsstellungen des beschriebenen, nicht Teil der Erfindung darstellenden Kraftfahrzeugtürverschlusses, wobei der Steuerzapfen des Verriegelungshebels auf eine Kontur des Kupplungselementes wirkt

Fig. 4 bis 5

verschiedene Funktionsstellungen des beschriebenen Kraftfahrzeugtürverschlusses, wobei der Steuerzapfen des Verriegelungshebels auf eine auf dem Kupplungselement angeordnete Schenkelfeder wirkt

In the following the invention will be explained in more detail with reference to an embodiment illustrative drawings; show it:

Fig. 1 to 3

various functional positions of the described, not part of the invention performing motor vehicle door lock, wherein the control pin of the locking lever acts on a contour of the coupling element

4 to 5

various functional positions of the motor vehicle door lock described, wherein the control pin of the locking lever acts on a disposed on the coupling element leg spring

The basic structure of the motor vehicle door lock in question include a locking mechanism 1, 2 of the catch 1 and pawl 2, an actuating lever 3a, 3b and two locking levers 4, 5. The two locking levers 4, 5 are coupled together by a pin 6 of the locking lever 5 in a Slot 7 of the inner locking lever or driving lever 4 engages. Basically, of course, only one locking lever 4, 5 possible.

Either way is a purely in Fig. 3 indicated motor or electric motor 8 in a position to the locking lever 5 in the transition from the Fig. 1 to Fig. 2 as indicated in the Turning clockwise, so that the inner locking lever 4 or driving lever performs by the engagement of the pin 6 in the recess or the slot 7 a counterclockwise rotation about its axis 9. On this axis 9, the two partial levers 3a, 3b of the assembled therefrom actuating lever 3a, 3b are mounted at the same time, in which it is an internal operating lever 3a, 3b in the embodiment. One partial lever 3a is designed as an internal operating handle lever 3a, while the other partial lever 3b represents an internal actuating trigger 3b.

The described motor movement of the locking lever 5 and consequently of the inner locking lever 4 has the consequence that a pin 10 located on the inner locking lever 4 interacts either with a contour 11 on a coupling element 12 or with a leg of a leg spring 22 arranged on the coupling element 12. The coupling element 12 designed as a clutch lever 12 is capable of selectively coupling the two partial levers 3a, 3b together or not. For this purpose, the coupling element or the clutch lever 12 is pivotally mounted on the other part of the lever 3b and the internal actuating release lever 3b and has a receptacle 13 for the one lever part 3a and the inner handle lever 3a. The coupling element 12 is arranged overall in a recess 14 of the one partial lever 3a or of the inner operating handle lever 3a.

If now according to one embodiment Fig. 1 and 2 the internal locking lever 4 counterclockwise movement about the axis 9 at the transition from the Fig. 1 to Fig. 2 performs, so on the contour or driving contour 11 along sliding pin 10 of the inner locking lever 4 ensures that the coupling element 12 is swung out by a Ausstellbereich 11 a of the contour. Because in the described counterclockwise movement of the inner locking lever 4, the pin 10 moves as it were "up" in the Fig. 1 and 2 ,

According to an embodiment according to the 4 and 5 is on the clutch lever 12, in particular on a mandrel 21, which coincides at the same time with the axis of rotation of the mounted on the inner lever 3b clutch lever 12, a leg spring 22 is arranged, which corresponds to the control pin 10 of the locking lever 4.

Completes the locking lever 4 and thus also the control pin 10 a rotational movement Fig. 1 and 2 in the counterclockwise direction, the control pin 10 moves according to Fig. 5 the leg 23 of the leg spring 22 with the consequence that the clutch lever 12 is displaced out of its pivoted position on the leg spring 22.

In detail, the control pin 10 of the locking lever 4 is disposed in a region between the two legs 23, 24 of the leg spring 22, wherein the control pin 10 in the position of the locking lever to Fig. 1 respectively. Fig. 4 the Leg 24 contacted and in position of the locking lever 4 after Fig. 2 respectively. Fig. 5 the leg 23 of the leg spring 22 contacted.

The swung-out clutch lever or the coupling element 12 now allows that after completion of a first actuating stroke, the two partial levers 3a, 3b are mechanically connected to each other by means of the coupling element 12. That is in the Fig. 2 or in Fig. 5 shown. In this case, the locking lever 4, 5 or the inner locking lever 4 has taken care of the control of the coupling element 12, namely by the interaction of its pin 10 with either the contour 11 or the leg spring 22 on the coupling element 12th

The first stroke of the operating lever 3a, 3b and the inner handle lever 3a is caused by a pulling movement on an inner door handle 15, which is connected to the respective inner handle lever 3a via any connecting element. As soon as a mechanical coupling of the two partial levers 3 a, 3 b has been achieved by this first stroke of the actuating lever 3 a, 3 b or its inner actuating handle lever 3 a, the internal actuating trigger 3 b can operate on a trigger lever 16, which is equipped with a fold 17 against which abuts a nose 18 of the inside operation release lever 3b.

In this case, the internal operating handle lever 3a after the first stroke corresponding to the pulling movement to the position Fig. 1 spring-assisted moved back. In this process The receptacle 13 of the coupling element 12 engages over the internal actuating release lever 3b, so that the coupling element 12 comes to rest in the recess 14 with connection of the partial levers 3a, 3b (cf. Fig. 3 ).

After coupling the two partial levers 3a, 3b, the nose 18 is in the course of a second stroke of the actuating lever 3a, 3b in a position to apply the release lever 16 so that the locking mechanism 1, 2 is opened.

The described motor pivoting of the inner locking lever 4 in the counterclockwise direction about its axis 9 corresponds for example to a central locking function. Because in the position "locked" after the Fig. 1 lead pulling movements on the inner door handle 15 causes the actuating lever 3a, 3b starts with a boom 19 against a stop 20 of the locking lever 5 and this, that is, the locking lever 5, "unlocked" in its position transferred. - Of course, the internal locking lever 4 can be pivoted not only by motor, but also manually, which is not shown.

In the described operation of starting the boom 19 against the stop 20 of the locking lever 5, the pin 10 on the inner locking lever 4 automatically ensures the already described pivoting of the coupling element 12. After completion of the first stroke of the actuating lever 3a, 3b are thereby both partial lever 3a, 3b coupled. At the same time this is an unlocking an optional child safety device or theft protection instead.

Either way, the second stroke of the actuating lever 3a, 3b then ensures that the now continuous mechanical connection from the inner door handle 15 to the release lever 16 during pulling movements on the inner door handle 15 allows an opening of the locking mechanism 1, 2.

This is in detail when looking at the Fig. 3 clear. Because after completion of the first stroke of the actuating lever 3a, 3b, the internal operating handle lever 3a returns to its position after the Fig. 1 spring-assisted back, so that the coupling element 12 the position after Fig. 3 occupies. The two partial levers 3a, 3b are coupled, so that a renewed pulling movement on the inner door handle 15 for counterclockwise pivoting of the actuating lever 3a, 3b about its axis 9 and consequently the locking mechanism 1, 2 is opened.

The motor vehicle door lock described also allows a Einhubbetätigung of the locking mechanism 1, 2. For this purpose, this one stroke not only provides for unlocking the motor vehicle door lock, but at the same time for the opening. In this case, the control pin 10 is not attached to the lock lever or Innenverriegelungshebel 5. As a result, the coupling element 12 falls directly into the recess 14 when the internal operating handle lever 3a is acted upon. At the same time, the boom 19 ensures that the inner locking lever 4 assumes its "unlocked" position. Due to the mechanical coupling of Both partial levers 3a, 3b can be in the course of this stroke of the internal operating handle lever 3a directly the locking mechanism 1, 2 open. The motor vehicle door lock thus takes on the transition from the Fig. 1 to Fig. 3 in this case, not the intermediate position after Fig. 2 one.

Claims (8)

1. Vehicle door latch with a locking mechanism (1, 2), also comprising at least one operating lever (3a, 3b) and a locking lever (4, 5), in which the operating lever (3a, 3b) contains a first partial lever (3a) and a second partial lever (3b) and in which the locking lever (4, 5) controls a coupling element (12), which optionally connects the two partial levers (3a, 3b) with each other, characterized in that the locking lever (4,5) contains a control journal (10) for a leg spring (22) on the coupling element (12) and in which the coupling element (12) is displaced via the legs (23, 24) of the leg spring (22) by the control journal (10) of the locking lever (4, 5) and in which the control journal (10) is arranged in an area between the two legs (23, 24) of the leg spring (22).
2. Vehicle door latch according to claim 1, characterized in, that the control journal (10) of the locking lever (4, 5) is in contact with leg (23) in the "unlocked" position of the locking lever (5) and is in contact with the leg (24) in the "locked" position of the locking lever (5).
3. Vehicle door latch according to claim 1, characterized in that one partial lever (3a) is designed as an internal release handle lever (3a) and the other partial lever (3b) as an internal release actuation lever (3b).
4. Vehicle door latch according to claim 3, characterized in that the internal release handle lever (3a) is connected to an internal door handle (15), whilst the internal release actuation lever (3b) acts upon the locking mechanism (1, 2).
5. Vehicle door latch according to one of the claims 1 to 4, characterized in that the coupling element (12) is pivotably arranged on the other partial lever (3b) of the operating lever (3a, 3b).
6. Vehicle door latch according to one of the claims 1 to 5, characterized in that the coupling element (12) engages into a recess (14) of the one partial lever (3a).
7. Vehicle door latch according to one of the claims 1 to 6, characterized in that the coupling element (12) contains a seat (13) for the one partial lever (3a).
8. Vehicle door latch according to one of the claims 1 to 7, characterized in that the operating lever (3a, 3b) pivots the locking lever (4, 5) during a first stroke, whilst the locking lever (4, 5) is in the locking position, in such a way that it engages the coupling element (12) in the two partial levers (3a, 3b) and in that during a second stroke, the operating lever (3a, 3b) acts upon the mechanically connected partial lever (3a, 3b) to open the locking mechanism (1, 2).

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