EP0666391B2 - Door lock for motor vehicle and its installation process - Google Patents

Description

The invention relates to a motor vehicle door lock with the features of the preamble of claim 1.

A locking device on a motor vehicle door is known (DE - A - 40 05 369) which is simple can be installed without idle stroke. With the provided there Motor vehicle door lock is the fixing screw the screw connection arrangement in the delivery state the motor vehicle door lock solved. The External operating lever and the clutch lever pushed as far apart as possible by the preload spring, to the greatest possible end position of the outside operating lever. After installation the motor vehicle door lock becomes the outer door handle used by first a front lying in the direction of travel Hook through an opening in the door area inserted and the outside door handle up to a stop is pushed forward. Then the rear one Handle area screwed into the opening, the Outside door handle is guided on the edge of the opening. This guide is required for a hook-shaped Area at an engaging portion of the outer operating lever passes and this on the stop surface comes to rest on the outside door handle. In the further Push the outer door handle into the opening up to pushes against the sheet metal of the motor vehicle door Stop surface against the outer operating lever the biasing force of the biasing spring in front of it, whereby the relative position of the outer operating lever the stationary clutch lever is changed. The pawl is influenced Not. After that the outside door handle pushed back and this functional position like this has been fixed, the fixing screw is tightened firmly, so that now the new position of the outer operating lever is fixed relative to the clutch lever. This means that the arrangement is practically free of empty strokes. Will now open the outside door handle during operation pulled the door, so that the stop surface comes Outside door handle opposite operating surface on the outside operating lever to the system and transmits the force from the outside door handle to the outside operating lever. The given game, which is not excluded corresponds to the distance of the Actuation area from the stop surface.

With a similar locking device, it is known (DE - C - 39 11 327), also in the delivery position the fixing screw of the screw connection arrangement tighten and the two levers previously explained to fix against each other after installing the motor vehicle door lock and attaching the outer door handle then loosen the fixing screw, the outside door handle then with the external operating lever to bring it into its functional position and fix it in it and then the fixing screw of the screw connection arrangement to put on again. This one too Locking device from which the present invention otherwise goes out when inserting the outer door handle the outside operating lever against the effect the bias spring from a stop surface on Outside door handle carried when opening the door the force-transmitting operating surface on the outside door handle opposite. So you have the same situation here are present, as in the previously explained state of the Technology.

The motor vehicle door locks previously explained require that first the motor vehicle door lock in the motor vehicle door installed and only then the outer door handle is scheduled. Both need the outside door handle when it is installed in the door panel Movement of the external operating lever from its delivery position against the force of the bias spring in its functional position. To do this, you must use the outside door handle a special stop surface for the purpose be designed for this power transmission. Finally remains systematically small even after installation Game that when pulling the outside door handle is noticeable, namely the distance between the stop surface and operating area on the outer door handle corresponds.

The object of the invention is one more technically improved motor vehicle door lock to indicate that as constructively as possible is again simplified.

The task outlined above is for a motor vehicle door lock with the features of the generic term of claim 1 by the features of the characteristic Part of claim 1 solved. The subclaims describe preferred configurations.

What is essential for the invention is what has been achieved here Principle of a "self-adjusting" outside operating lever. No longer the one that runs during installation Movement of the outer door handle moves the outer operating lever in its functional position, but the external actuation lever is initially during installation the motor vehicle door lock in the motor vehicle door completely independent of the outside door handle and be The end is far from the stop surface on the outside door handle. Only when the Motor vehicle door lock and after loosening the fixing screw the external operating lever is positioned below Spring force effect on the outside door handle. This adjustment takes place under the action of the bias spring against the actuating surface, i.e. the surface that When opening the door, the force from the outside door handle to the External operating lever transmits. This job systematically eliminates any game. In addition did this by reversing the direction of action of the Preloading spring realized the advantage that the stop surface on the outside door handle, which is only the Attitude served, can be completely eliminated. The function the stop surface is namely through the actuating surface taken over.

On the one hand, this assembly technique is extraordinary Expedient because the assembly time on the belt again is significantly shortened, on the other hand it is now completely no matter whether the outside door handle before or after Motor vehicle door lock installed in the motor vehicle door becomes. The motor vehicle door lock according to the invention can be used for all installation requirements use uniformly.

Fig. 1

ausschnittweise, ein Kraftfahrzeug-Türschloß, schon eingebaut in der Kraftfahrzeugtür, im Anlieferungszustand,

Fig. 2

das Kraftfahrzeug-Türschloß aus Fig. 1 mit dem Außenbetätigungshebel in Funktionsstellung, also im Betriebszustand, und

Fig. 3

einen Schnitt gemäß III - III in Fig. 1.

In the following, the invention will be explained in more detail with reference to a drawing showing only one exemplary embodiment. In the drawing shows

Fig. 1

excerpts, a motor vehicle door lock, already installed in the motor vehicle door, in the delivery state,

Fig. 2

the motor vehicle door lock from Fig. 1 with the outer operating lever in the functional position, ie in the operating state, and

Fig. 3

2 shows a section according to III - III in FIG. 1.

The motor vehicle door lock shown in detail in Fig. 1 has a different lever Lock mechanism and locking elements like one Lock latch 1 and a pawl 2 on. Of the Lock mechanics are just those for understanding the Teaching essential lever shown. One recognizes at first one operationally at one end 3 with one Actuating surface 4 on an outside door handle 5, which is here is shown in section, interacting external operating lever 6, the one at the other end Swivel bearing 7 is pivotally mounted. The operating area 4 is used in the operating state when opening the Door of the transmission of power from the outside door handle 5 the outer operating lever 6.

A housing 8 is also indicated a cooperating with the outer operating lever 6, interacting directly or indirectly with the pawl 2 Clutch lever 9. In the illustrated embodiment the pawl 2 has one up protruding extension 10 on which an angled driving lug 11 engages the clutch lever 9 as soon as the clutch lever 9 is moved to the right in FIG. 1.

The previously described movement of the clutch lever 9 is caused by the outer operating lever 6. To do this is between the outside operating lever 6 and the clutch lever 9 a screw connection arrangement 12 with slot 13, fixing screw 14 and biasing spring 15 is provided. By the bias spring 15 is the outer operating lever 9 in the direction biased towards the actuating surface 4.

If the motor vehicle door lock has not yet been installed is the outer operating lever 6 against the Force of the bias spring 15 in or close to its end position - Delivery position - relative to the clutch lever 9 adjusted. The fixing screw is in this position 14 tightened so much that the bias spring 15 ineffective is. With built-in motor vehicle door lock and outer door handle 5 and then loosened fixing screw 14 then the outer operating lever 6 is under Effect of the bias spring 15 by itself on the outside door handle 5, namely on its actuating surface 4, on. This also acts as a stop surface for the external actuation lever 6. The fixing screw 14 is then tighten again so that the two levers 6, 9 in this function firmly connected again are.

When the fixing screw 14 is tightened, both levers are 6, 9 then to a joint of the outside door handle 5 adjustable unit firmly connected. Man can understand that in Fig. 2 of the drawing. Becomes the outside door handle 5 here in the drawing to the right moved (pulled), so the outside operating lever 6 pivoted clockwise around the pivot bearing 7, the clutch lever 9 is pulled to the right and takes 11 over his driver nose Extension 10 on pawl 2 clockwise with, so that it lifts out of the latch latch 1 (Door opening).

Is the clutch lever 9 with the outside operating lever 6 with the fixing screw 14 tightened non-rotatably and non-displaceably connected, see above the clutch lever 9 is arched to the right. The fixed connection of the clutch lever 9 with the outer operating lever 6 can, however, only the displaceability according to the course of the Elongated hole 13, but not the pivotability of the Clutch lever 9 by a through the screw connection arrangement 12 pivot axis formed concern. Then the clutch lever 9 is also tightened Fixing screw 14 opposite the external operating lever 6 can still be pivoted so that it is at Pivotal movement of the outer operating lever 6 no arch movement, just a straight line Sliding movement executes, opposite the outer operating lever 6 so to a certain extent Swivels the swivel axis back in the opposite direction. A firm connection of both levers 6, 9 is in the sense of Lessons, of course, because of the external lever 6 takes the clutch lever 9 with it.

The clutch lever 9 could with the outside operating lever 6 on the same pivot bearing 7 be pivoted, as can be seen from the beginning explained construction of a known motor vehicle door lock results. Such a construction, in which the screw connection arrangement 12 then only the fixation of the two levers 6, 9 against each other serves, also shows the DE - C - 39 11 327.

The embodiment shown here shows one other construction in which in the most convenient Way the screw connection arrangement 12 at the same time the bearing function for the clutch lever 9 fulfilled on the outer operating lever 6. It is provided here that the fixing screw 14 with a threaded connector interacts, one with flattened Guide edges at the edges of the elongated hole 13 has practically rotatably guided middle section 18. The assignment of the elongated hole 13 and the threaded connector 17 is one or the other lever 6 or 9 basically any. In the illustrated embodiment is the slot 13 in the outer operating lever 6, while the threaded connector 17 a normal circular hole in the clutch lever 9 penetrated.

The construction can be seen in detail in FIG. 3 recognize well. The swivel bearing is also clearly visible here 7 and wound there as a leg spring Preload spring 15, which is in a groove 19 on the threaded connector engages (see also Fig. 1 and Fig. 2).

1 and 2 show in context, that the unit from the outer operating lever 6 and Clutch lever 9 by means of its own biasing spring against a fixed stop 20 on the housing 8 of the Motor vehicle door lock is biased and so otherwise a certain rest position (locking position the pawl 2) takes. The preload spring the effect of this is not shown here.

It could be provided that the clutch lever 9th on the outer operating lever 6 by means of the screw connection arrangement 12 only according to the course of the slot 13 slidable, but not pivotable is appropriate. Then there would be for the clutch lever 9 the arc movement explained above. in the the illustrated embodiment, however, is provided that the fixed connection of the clutch lever 9 with the external operating lever 6 only the displaceability of the clutch lever 9 by one Screw connection arrangement 12 formed pivot axis concerns, the clutch lever 9 is here from the threaded connector 17 formed. The solution explained earlier is realized when the clutch lever 9 on the threaded connector 17 is locked or otherwise specified. Is the clutch lever 9 on the threaded connector 17th not locked or otherwise specified, it can be logically pivot around the threaded connector 17. This can be for actuation or special theft protection be expedient and in any case has the consequence that the clutch lever 9 when pivoting the outer operating lever 6 is only moved laterally. In order to implement this in a defined manner, the exemplary embodiment shown is provided that the clutch lever 9 by means of its own biasing spring about the pivot axis against a fixed stop 21 on the housing 8 is biased and therefore without any other interference when the outer operating lever is swiveled 6 is only moved laterally. The bias spring is here not shown, but only by the arrow in Fig. 1 and Fig. 2 indicated in their effect. It can be the same Preload spring, which is also the pretension against the fixed stop 20. The stationary Stop 21 is different in its function and consequently also separated from the stop 20.

Claims (8)

1. Motor vehicle door lock with a lock mechanism having various levers and with locking elements, such as a lock latch (1) and a detent pawl (2), the lock mechanism having an exterior actuating lever (6), operatively interacting at one end (3) with an exterior door handle (5), and a coupling lever (9), interacting with the exterior actuating lever (6) and directly or indirectly interacting with the detent pawl (2), the exterior door handle (5) having an actuating face (4) which, in the operative state, transmits the force from the exterior door handle (5) to the exterior actuating lever (6) during the opening of the door, there being provided between the exterior actuating lever (6) and the coupling lever (9) a screw-connection arrangement (12) with a fixing screw (14) and a prestressing spring (15) and preferably with a long hole (13), the exterior actuating lever (6) being prestressed in one direction relative to the exterior door handle (5) by the prestressing spring (15), and, with the fixing screw (14) tightened, the two levers (6, 9) being fixedly connected to one another to form a unit jointly adjustable by the exterior door handle (5), in the first place, with the motor vehicle door lock not installed, the exterior actuating lever (6) being in or near one end position, delivery position, relative to the coupling lever (9) counter to the force of the prestressing spring (15) and the fixing screw (14) being tightened so firmly that the prestressing spring (15) does not take effect, the motor vehicle door lock being installed in the motor vehicle door with the exterior actuating lever (6) being in the delivery position, and, with the motor vehicle door lock installed, the fixing screw (14) being released, so that the prestressing spring (15) takes effect and, in the functional position then assumed, the fixing screw (14) is tightened so firmly that the two levers (6, 9) are fixedly connected to one another, characterized in that the prestress of the prestressing spring (15) is aimed in the direction of the actuating face (4) on the exterior door handle (5), so that, with the fixing screw (14) released, the exterior actuating lever (6) is consequently moved by the prestressing spring (15) until the said exterior actuating lever comes to bear on the actuating face (4), functional position.
2. Motor vehicle door lock according to the preceding claim, characterized in that the exterior actuating lever (6) is pivotably mounted at the other end on a pivot bearing (7).
3. Motor vehicle door lock according to one of the preceding claims, characterized in that the coupling lever (9) is mounted on the exterior actuating lever (6) by means of the screw-connection arrangement (12) so as only to be displaceable only according to the shape of the long hole (13), but not pivotably.
4. Motor vehicle door lock according to one of the preceding claims, characterized in that the fixed connection of the coupling lever (9) to the exterior actuating lever (6) relates only to the displaceability according to the shape of the long hole (13), but not to the pivotability of the coupling lever (9) about a pivot axis formed by the screw-connection arrangement (12), that is to say, even with the fixing screw (14) tightened, the coupling lever (9) is pivotable relative to the exterior actuating lever (6).
5. Motor vehicle door lock according to one of the preceding claims, characterized in that the fixing screw (14) interacts with a threaded plug (17) which has a middle portion (18) guided virtually fixedly in terms of rotation with flattened guide edges on the edges of the long hole (13).
6. Motor vehicle door lock according to one of the preceding claims, characterized in that the threaded plug (17) of the screw-connection arrangement (12) forms the pivot axis of the coupling lever (9) for the exterior actuating lever (6).
7. Motor vehicle door lock according to one of the preceding claims, characterized in that the unit consisting of the exterior actuating lever (6) and of the coupling lever (9) is prestressed by means of a specific prestressing spring against a fixed stop (20) on the housing (8) and thus assumes a definite position of rest (locking position of the detent pawl (2)) in an otherwise non-loaded manner.
8. Motor vehicle door lock according to one of the preceding claims, characterized in that the coupling lever (9) is prestressed by means of a specific (or the same) prestressing spring about the pivot axis against a (further) fixed stop (21) on the housing (8) and is thus displaced only laterally, without being otherwise influenced, during the pivoting of the exterior actuating lever (6).

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