EP1323883B1 - Motor vehicle door lock - Google Patents

Description

The invention relates to a motor vehicle door lock with a locking mechanism, further comprising at least one actuating lever, and with a securing device with a clutch lever, z. B. Parental control and / or anti-theft device, wherein the securing device separates the actuating lever in its "on" position from the locking mechanism.

A motor vehicle door lock of the embodiment described above is exemplified in the DE 195 33 199 C1 or in the US-A-6116664 described. In this context, a central locking element in functional positions "unlocked" and "locked" actuate control, with a control pin in its functional position "locked" is free of the central locking element. At the same time a manual operation of the central locking element between the functional positions "locked" and "unlocked" is allowed.

Connected to the central locking element is a locking central lever, which in turn enters into connection with an associated operating lever system via a clutch lever. In the "locked" function position of the clutch lever, the inner operating lever can only be operated with an idle stroke, ie it is disconnected from the locking mechanism.

In contrast, the locking central lever and the clutch lever with respect to an operation from the functional position "locked" in the functional position "unlocked" non-positively connected by means of a clutch spring. In addition, the clutch lever on an anti-theft device, wherein the control pin in a functional position "theft-proof" is controllable, in which the control pin blocks the clutch lever on the anti-theft device in its functional position "locked". - The well-known motor vehicle door lock has been proven, but can be improved, as far as the space taken up.

The invention is based on the technical problem to further develop a motor vehicle door lock of the embodiment described above so that a particularly compact design is guaranteed. At the same time the functionality should be improved.

To solve this technical problem, a generic motor vehicle door lock is characterized by the features of claim 1.

The two operating levers are coaxially and coplanar with each other. In contrast, the clutch lever has a pivotable mounting on or on the second (or first) actuating lever and connects the two actuating lever usually in the position of the securing device "off" with each other. In this position, the two-part operating lever is thus able to act directly or indirectly on the locking mechanism. That is also reasonable, because this functional position usually Corresponds to the fact that an anti-theft device and / or child safety device is not inserted, so the one or more operating lever to be able to act on the locking mechanism.

In contrast, the safety device in its position "a" basically ensures that the operating lever - usually the first operating lever - performs an idle stroke. If this first actuating lever is connected to a handle, this leads to the associated motor vehicle door lock z. B., from the inside, not (more) can be opened. This is the usual parental control function. In this case, an external operating lever for opening the locking mechanism would still be effective.

However, it is just as conceivable that in the case of the functional position of the safety device "a" both an external operating lever and an internal operating lever go empty, which is desired when the anti-theft device is inserted. All presented functional positions can be realized with the aid of the motor vehicle door lock according to the invention.

While the first actuating lever is usually connected to the handle, the second actuating lever acts on the locking mechanism indirectly or directly. Of course, the reverse can also be done. The term "indirect loading" includes variants in such a way that the second operating lever with the interposition of one or more intermediate lever, Bowden cables, connecting rods or similar connecting elements acts on the locking mechanism.

For controlling the clutch lever and showing the basic positions of the safety device "on" and "off", the safety device has a slotted guide, which influences the clutch lever directly or indirectly. For this purpose, the clutch lever is largely designed as Zweiarmhebel with link arm and stop arm.

It has proven to be advantageous if an associated axis of rotation of the two-armed lever or clutch lever is formed as in a receptacle of the second actuating lever (or the first operating lever) inserted connecting web between two plates of the crank arm. In other words, the link arm of the clutch lever is regularly composed of two plates, which between them include the second (or first) operating lever. To connect the two plates is the connecting web, which simultaneously performs the function of a rotation axis of the clutch lever, which is inserted into a receptacle of the second (or first) operating lever.

The two plates of the crank arm are connected to each other not only by the connecting web in the region of the axis of rotation of the coupling lever, but also with the help of a sliding pin at the end of the crank arm. This link pin protrudes into the already mentioned link guide, which is for the gift of the clutch lever provides. For this purpose, a crank lever is provided, which carries the aforementioned slide guide and controls with the aid of this slide guide engages the engaging link pin and thus the clutch lever, in one of the two operating lever interconnecting or a position separating them.

This has been done by connecting the crank lever mounted coaxially with the two actuating levers to an adjusting device, for example a child safety eccentric with a slot receptacle for a screwdriver. This procedure supports the compact design.

Finally, an override lever can be realized, which on the operating lever, the locking mechanism in the position "locked" to control is able. This override lever may be molded onto the second (or first) actuating lever or form an integral lever with this actuating lever. In any case, can be achieved with the help of the override lever, that the operating lever (or an additional lever) can ultimately take over the function, for example, an internal locking button. For this purpose, it is usually done so that an inner handle is pressed into a certain position, so that the locking mechanism via the override lever assumes the position "locked".

As a result, the motor vehicle door lock according to the invention is particularly convincing due to its particularly compact design, for which the two coplanar and coaxially mounted actuating levers are in the core contribute with intermediate clutch lever as well as the co-axial and coplanar to the operating levers mounted crank lever particularly. The control of the clutch lever is simple and reliable, because in this context is used on a crank lever with associated slide guide.

Of particular importance beyond that between the respective operating lever and the clutch lever takes place no relative movement, the clutch lever is controlled and acted solely on the crank lever and the slide guide. Malfunctions and / or indifferent positions of the levers to each other can be practically excluded. This shows the main advantages.

Fig. 1

den erfindungsgemäßen Kraftfahrzeugtürverschluss in schematischer Ansicht in der Position Sicherüngseinrichtung "ein", Betätigungshebel nicht beaufschlagt,

Fig. 2

den Gegenstand nach Fig. 1 mit beaufschlagtem Betätigungshebel,

Fig. 3

den Gegenstand nach Fig. 1 in der Position der Sicherungseinrichtung "aus",

Fig. 4

den Gegenstand nach der Fig. 1 in Rückansicht in der Position der Sicherungseinrichtung "ein",

Fig. 5

den Gegenstand nach Fig. 3 in Rückansicht in der Stellung der Sicherungseinrichtung "aus",

Fig. 6

eine Aufsicht auf den Gegenstand der Fig. 1 aus Richtung des Pfeils A,

Fig. 7

eine abgewandelte Ausgestaltung des erfindungsgemäßen Kraftfahrzeugtürverschlusses in der Position Sicherungseinrichtung "aus",

Fig. 8

den Gegenstand nach Fig. 7 mit der Sicherungseinrichtung in der Position "ein" und

Fig. 9

eine Aufsicht auf den Gegenstand nach Fig. 7 aus Richtung des Pfeils B.

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

the motor vehicle door lock according to the invention in a schematic view in the position safety device "on", operating lever is not applied,

Fig. 2

the object after Fig. 1 with acted upon actuating lever,

Fig. 3

the object after Fig. 1 in the position of the safety device "off",

Fig. 4

the object after the Fig. 1 in rear view in the position of the safety device "on",

Fig. 5

the object after Fig. 3 in rear view in the position of the safety device "off",

Fig. 6

a supervision of the object of Fig. 1 from the direction of the arrow A,

Fig. 7

a modified embodiment of the motor vehicle door lock according to the invention in the position securing device "off",

Fig. 8

the object after Fig. 7 with the safety device in the position "on" and

Fig. 9

a top view of the object Fig. 7 from the direction of arrow B.

In the figures, a motor vehicle door lock is shown, which has a realized, but not shown locking mechanism of pawl and rotary latch. On this locking mechanism acts an actuating lever 1, 2 with the interposition of only in the Fig. 1 and 7 The actuating lever 1, 2 is a first actuating lever 1 and a second actuating lever 2, which are mounted coaxially and coplanar with each other. For this purpose, a common axis of rotation 3 is provided, which is anchored in a lock housing not explicitly shown. In addition to the two operating levers 1, 2 is on this rotation axis 3 a crank lever 4 is mounted with slide guide 5, as will be explained below.

The first operating lever 1 is connected via a pivot point 6 with a handle 7, z. B. an inner door handle 7, connected (see. Fig. 1 and 7 ). In contrast, the second operating lever 2 works directly or indirectly on the locking mechanism. For this purpose, the second operating lever 2 has a nose 8, which in.known manner acts on the release lever A, which in turn releases a pawl, so that the associated rotary latch can open spring-assisted. That is, by an arrow in the Fig. 1 and 7 indicated rotational movements of the nose 8 in a clockwise direction lead to the opening of the locking mechanism.

However, this only happens when the handle 7 acts on the first operating lever 1 and at the same time the second operating lever 2 is taken. Otherwise, namely, the first actuating lever 1 with respect to the second operating lever 2 performs an idle stroke. This is the case when a safety device 4, 5, 9, 10, 11 in their position "on" the operating lever 1, 2 and the first operating lever 1 separates from the locking mechanism.

This is done - as I said - by the fact that the first operating lever 1 and the second operating lever 2 are separated from each other, so that the handle 7, the locking mechanism is not (more) indirectly or directly applied. The safety device 4, 5, 9, 10, 11 has for this purpose a clutch lever 9, the crank lever 4 with slide guide 5, a connecting element 10 and an eccentric 11. Here, the clutch lever 9 ensures that the first operating lever 1 and the second operating lever 2 are connected to each other when the securing device 4, 5, 9, 10, 11 in the position "off" (cf. Fig. 3 . 5 and 7 ), while the two operating levers 1, 2 in the position of the securing device "a" are separated from each other (see. Fig. 1 . 2 and 4 ).

In order to control the clutch lever 9 in the various positions, the slide guide 5 is provided on the crank lever 4. With the help of the eccentric 11 can be about the connecting element 10, in this case a connecting rod or a connecting pin or connecting pin, the crank lever 4 pivot about the axis of rotation 3 that a delving into the slide guide 5 cam pin 12 of the clutch lever 9 assumes at least two positions.

This guide pin 12 is located on the clutch lever 9, which in turn is pivotally mounted on the second operating lever 2. For this purpose, the second operating lever 2 has a receptacle 13, in which a connecting web 14 is received (see. Fig. 6 and 9 ). At the same time, this connecting web 14 couples two plates 15a, 15b of a link arm 15a, 15b of the coupling lever 9. In addition to this link arm 15a, 15b, which is designed as a two-armed lever Clutch lever 9 also still a stop arm 16, which limits excessive rotational movements of the clutch lever 9 by striking a blocking element, not shown.

The two aforementioned plates 15a, 15b of the crank arm 15a, 15b of the coupling lever 9 are connected to each other not only by the connecting web 14 in the region of the axis of rotation 14 of the coupling lever 9, but additionally by means of the already mentioned sliding pin 12 at the end of the crank arm 15a, 15b. The guide pin 12 protrudes from the front-most front plate 15b of the crank arm 15a, 15b and protrudes into the topologically located before slide guide 5 of the crank lever 4 in (see. Fig. 6 and 9 ). In this way, the securing device 4, 5, 9, 10, 11 is able to control via the gate lever 4 and its link guide 5 the engaging therein cam pin 12 and thus the clutch lever 9.

In the position after the Fig. 1 and 2 (Safety device 4, 5, 9, 10, 11 "on"), the guide pin 12 is located on the left stop of the slide guide 4, so that the first operating lever 1 with a nose 17 on the guide pin 12 passes when an action on the handle 7 (see. Fig. 4 ). If, on the other hand, the securing device 4, 5, 9, 10, 11 is not inserted, the position "off" (see FIG. Fig. 3 . 5 and 7 ), the gate lever 4 has - starting from Fig. 4 respectively. Fig. 8 - Ensured that the clutch lever 9 with respect to the second operating lever 2, taking into account the axis of rotation 14, a pivoting in a counterclockwise direction (see the transition from Fig. 4 to Fig. 5 ) or clockwise (see the transition from Fig. 8 to Fig. 7 ) learns. As a result, now proposes the nose 17 of the first actuating lever 1 to the guide pin 12, so that in this way the first operating lever 1 is connected to the second actuating lever 2, namely via the mounted on the second operating lever 2 clutch lever 9 (see. Fig. 5 and 9 ). This has the consequence that both actuating levers 1, 2 are acted upon together when the handle 7 initiates a corresponding movement at the stop point 6. Consequently, the second operating lever 2 with the nose 8 lifts the locking mechanism.

In addition, an override lever 18 is realized, which is optionally implemented. With the help of this override lever 18, the actuating lever 1, 2 can act so that the locking mechanism is "locked" in its position transferred. For this purpose, the override lever 18 is integrally formed on the second actuating lever 2 or forms an integral two-armed lever with this second operating lever. 2

In the modified embodiment of the Fig. 7 to 9 carry the same components matching reference numerals and also assume a similar functionality as previously described. There is only one (minor) difference to the effect that in the variant according to the Fig. 7 to 9 as a connecting element 10 is not a connecting rod, but rather a pin is used. This pin provides in combination with the eccentric 11, which is a parental control nut acts, that the crank lever 4 is pivoted with its guide slot 5 about the rotation axis 3 in the counterclockwise direction, when the eccentric 11 is an approximately 90 ° clockwise rotation in the transition from the Fig. 8 (Safety device 4, 5, 9, 10 "on") to Fig. 7 (Safety device 4, 5, 9, 10, 11 "off") performs. By this pivoting movement of the crank lever 4 of the guide pin 12 runs in the slide guide 5 from its position in Fig. 8 to the position after the Fig. 7 and at the same time the clutch lever 9 is pivoted clockwise. As a result, the nose 17 of the actuating lever 1 now comes with the guide pin 12 at a Beauschlagung the handle 7 in engagement (see FIG. Fig. 7 ), whereas previously both operating levers 1, 2 were not (yet) coupled (cf. Fig. 8 ).

Claims (9)

1. Motor vehicle door latch comprising

   - a locking mechanism and

   - at least one operating lever (1, 2) and

   - a safety device (4, 5, 9, 10, 11) with a coupling lever (9), e.g. a child safety lever and/or a double lock lever,

   in which the safety device (4, 5, 9, 10, 11) in its "on" position separates the operating lever (1, 2) from the locking mechanism and in which the operating levers (1, 2) can be connected to and separated from each other via the coupling lever (9) of the safety device (4, 5, 9, 10, 11), characterised in that both operating levers (1, 2) and a rocking lever (4) of the safety device (4, 5, 9, 10, 11) are arranged on the same axis and plane and the rocker lever (4) contains a rocker guide (5) for steering the coupling lever (9).
2. Motor vehicle door latch according to claim 1, characterised in that the first operating lever (1) is connected to a handle (7), whilst the second operating lever (2) directly or indirectly acts upon the locking mechanism or vice versa.
3. Motor vehicle door latch according to one of the claims 1 to 2, characterised in that the coupling lever (9) is pivotably arranged on the second operating lever (2).
4. Motor vehicle door latch according to one of the claims 1 to 3, characterised in that the coupling lever (9) is designed as a two-armed lever with a rocker arm (15a, 15b) and a retainer arm (16).
5. Motor vehicle door latch according to one of the claims 1 to 4, characterised in that a rotational axis (14) of the coupling lever (9) is designed as a connecting web (14) between two plates (15 a, 15b) of the rocker arm (15a, 15b) inserted into a seat (13) of the second operating lever (2).
6. Motor vehicle door latch according to claim 5, characterised in that the two plates (15a, 15b) of the rocker arm (15a, 15b) are not only connected by the connecting web (14) in the area of the rotational axis (14) of the coupling lever (9) but also by means of a rocker pin (12) at the end of the rocker arm (15a, 15b).
7. Motor vehicle door latch according to one of the claims 1 to 6, characterised in that the safety device (4, 5, 9, 10, 11) contains a rocker arm (4) which with the aid of the rocker guide (5) steers the engaging rocker pin (12) and thus the coupling lever (9).
8. Motor vehicle door latch according to one of the claims 1 to 7, characterised in that also an override lever (18) is provided, which steers the locking mechanism into the "locked" position via the operating lever (1, 2).
9. Motor vehicle door latch according to claim 8, characterised in that override lever (18) is moulded on the operating lever (2).

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