WO2019068277A1

WO2019068277A1 - Motor vehicle door lock

Info

Publication number: WO2019068277A1
Application number: PCT/DE2018/100772
Authority: WO
Inventors: Michael Scholz; Holger Schiffer; Ömer INAN; Thorsten Bendel
Original assignee: Kiekert Ag
Priority date: 2017-10-06
Filing date: 2018-09-12
Publication date: 2019-04-11
Also published as: DE102017123262A1; EP3692230A1; EP3692230B1

Abstract

The invention relates to a motor vehicle door lock which is equipped with a locking mechanism (3, 4) and a drive (5 to 9) for the locking mechanism (3, 4), in particular for electrically opening/closing the locking mechanism. The drive (5 to 9) has at least one drive element (7) which acts directly or indirectly on the locking mechanism (3, 4). According to the invention, a mechanical actuation element (10, 11, 12) is additionally provided for actuating the drive element (7) in an emergency.

Description

Motor vehicle door lock

The invention relates to a motor vehicle door lock, with a locking mechanism, and with a drive for the locking mechanism, in particular for the electrical opening / closing of the locking mechanism, wherein the drive is equipped with at least one drive element which works directly or indirectly on the locking mechanism.

The drive for the locking mechanism generally ensures that it is opened electrically. For this purpose, the drive via the drive element works directly or indirectly on a pawl as part of the locking mechanism of pawl and rotary latch. Since the drive in general and beyond has an electric motor, one speaks in this context also of the electrical opening of the locking mechanism.

Motor vehicle door locks with such an additional drive for opening or closing a locking mechanism are increasingly being used in practice and extensively described. Thus, the generic type DE 10 2015 205 951 A1 deals with such a motor vehicle door lock, in which the opening of the locking mechanism is carried out with the aid of a first electric drive. In addition to the first electric drive for opening a second electric drive is provided, which works as a closing aid, thus responsible for closing the locking mechanism.

Electric opening drives are usually realized in connection with a so-called "keyless entry" access. In this case, there is a dialogue between the motor vehicle and, for example, a user-side key or generally a transceiver after pressing an outside door handle or inside door handle. Following a positive check of the access authorization of the user, the pawl is lifted off its engagement with the rotary latch with the aid of the electric opening drive with the locking mechanism closed (compare, for example, only DE 10 2007 01 1 498 A1). In the closed state of the locking mechanism, the pawl generally falls first in a pre-rest and then a main catch of the catch. In order to open the ratchet, therefore, the pawl must be lifted from its engagement with the catch. This is ensured by the drive or opening drive during electrical opening.

The impingement of Gesperres using the drive can be done directly or indirectly. Indirect loading, for example, provides that the drive acts on the pawl via an interposed release lever and this is then lifted off its engagement with the rotary latch. In the case of an immediate action on the locking mechanism with the aid of the drive, as a rule the procedure is such that the drive directly lifts the locking pawl from its engagement with the rotary latch. For this purpose, the offset, for example, in rotations drive element may be equipped with an actuating cam, which operates directly on the pawl and lifts them from their engagement with the catch.

If the drive is not an opening drive, but rather a closing mechanism, it is generally the case that the drive acts on the rotary latch. As soon as the locking mechanism assumes, for example, its pre-locking position with the pawl engaged in the pre-catch of the rotary latch, the drive ensures that the rotary latch is pivoted in the direction of the main catch. In this way, the drive ensures a closing of the locking mechanism.

In the prior art and in practice situations are conceivable, for example, in a realized drive for electrically opening the locking mechanism, in which the electric drive does not return to its position after an opening movement. Such scenarios are conceivable, for example, if the engine fails, the drive is blocked by mechanical action, etc. In this case, the drive ensures that the pawl is lifted from its engagement with the catch and this functional position maintains. As a result, the associated motor vehicle door lock can not (more) close. An associated motor vehicle door remains permanently open. This is unacceptable for reasons of necessary theft protection. The invention aims to remedy this situation.

The invention is based on the technical problem of further developing such a motor vehicle door lock so that an actuation of the locking mechanism is still possible and can be carried out, for example, if the drive fails.

To solve this technical problem, a generic motor vehicle door lock in the invention is characterized in that a mechanical actuator for emergency operation of the drive element is provided.

That is, in the context of the invention, the drive for the locking mechanism with the help of the mechanical actuator at least in its basic position (back) move back. This is generally done by manual loading of the actuator in question. In the event that the drive is one for the electric opening of the locking mechanism, the emergency operation corresponds to the emergency closing of the locking mechanism. In this case, therefore, the actuating element for emergency closing of the locking mechanism is established. This is usually the case. In principle, however, the mechanical actuating element can also be provided for emergency opening of the locking mechanism. In this case, the mechanical actuator after a manual application again ensures that the blocked during the closing process or otherwise halted drive element is again moved back to its normal position mechanically. As a result, a permanent closure in the course of an emergency opening can be lifted. As a rule, however, the drive for the locking mechanism is, in particular, a drive for electrically opening the locking mechanism, so that the mechanical actuating element is provided and set up for emergency closing of the drive element. That is, a blocked in the "open" position electric drive to open the locking mechanism is mechanically reversed by means of the mechanical actuator to its normal position. Since the basic position corresponds to the fact that the drive usually does not act on the locking mechanism, the locking mechanism can then be mechanically closed without difficulty. The same applies to the associated motor vehicle door.

According to an advantageous embodiment, the actuator is formed Schlosseigen. A castle-own actuator designates such, which is designed as part of the motor vehicle door lock according to the invention, and indeed already in the production. For example, the actuator in question may be stored in or on the associated lock housing. Thus, throughout the present invention, the procedure is the same.

It has been proven that the actuating element acts radially on the drive element to its rotation. Here, the invention is based on the recognition that the drive element is set as part of the drive by means of an electric motor as a further component of the drive in rotation. In normal operation, rotations of the drive element cause the ratchet to be opened electrically. For this purpose, the drive element is typically equipped with an actuating cam which operates directly or indirectly on the pawl of the locking mechanism.

If the ratchet is closed and is to be opened electrically, a corresponding rotation of the drive element with the aid of the electric motor causes the actuating cam indirectly or directly lifts the pawl from its engagement with the rotary latch. As a result of this comes the Rotary latch of the pawl free and a previously captured locking pin is also released. The associated motor vehicle door can be opened.

In order to realize an emergency operation or emergency closure by means of the mechanical actuating element overall in the example case, the drive element and the actuating element are advantageously equipped with a respective toothing. In most cases, the drive element has a peripheral toothing and is consequently designed as a worm wheel. The electric motor in turn has on its output shaft via an output worm, which meshes with the peripheral toothing of the drive element or worm wheel. In this way, the drive element or worm wheel for electrical opening can be set in rotation and lift the pawl as described from their engagement with the rotary latch. This is how it works in normal operation.

In this normal operation, however, the two gears do not engage in one another on the one hand the drive element and on the other hand the mechanical actuator for emergency operation. That is, in normal operation, the mechanical actuator for emergency operation and advantageous for emergency closing can not interact with the drive element. Only when an emergency operation or emergency closure is required, the two gears mesh with each other.

To achieve this in detail and implement, the teeth of the actuator is equipped with a recess. In addition, the design in this case is such that the recess in the toothing of the actuating element of the toothing of the actuating element is opposite in normal operation. Since the recess of the actuating element and the associated toothing of the drive element consequently do not mesh with one another, the drive element can perform pivoting movements in normal operation, independently of the actuating element. Only then, when an emergency operation or an emergency operation is required, a manual action on the mechanical actuator ensures that the teeth on the actuator in question is brought into engagement with the toothing of the drive element. This is done by an operator by the already described manual loading of the mechanical actuator.

The design is generally made such that the recess in the toothing of the actuating element is designed as a largely circle segment. Consequently, the toothing of the actuating element also passes over a circular segment. The overall design is made so that the circle segment of the toothing of the actuating element is designed to be larger overall, typically twice as large as the circle segment belonging to the recess of the toothing. That is, a generally realized in this context actuating screw is divided in the ratio of one third to two thirds, with one third of the circumference belongs to the recess and two thirds to the teeth.

In this way, the normal operation of the drive element is provided, which in normal operation with the actuator or the mentioned actuating screw can not interact. Only in emergency operation and emergency operation or emergency closing of the drive element engages the corresponding worm turns equipped circle segment of the actuating screw in the drive element. In general, a two-thirds circular revolution is sufficient to apply the drive element at least as far as manually with the aid of the actuating element or the actuating screw, so that the pawl is not (more) held in its lifted position compared to the rotary latch. As a result, the pawl can easily occur in a subsequent mechanical closing operation in the locking mechanism or the catch, first in the Vorrast and then in the main catch. The catch is thereby - as usual - transferred by a retracting into the inlet opening of the catch bolt in its closed position.

The actuating element generally has the actuating screw arranged tangentially on the drive element. In this way, the actuating worm interact with the peripheral toothing of the drive element comparable, as does the output worm on the output shaft of the electric motor. In general, the actuating element is in two parts equipped with the actuating screw in question and in addition a manually acted upon manipulation element.

It has proven useful if the manipulation element and the actuating screw are arranged at an angle to each other. This is explained essentially by the fact that the actuating screw is arranged as part of the actuating element tangentially compared to the drive element. The manipulation element advantageously has an actuating nut. The actuating nut can be mounted for example in the lock housing and / or lock case. As a result, the Betätigungsnuss is easily accessible from the outside.

Incidentally, an arrangement of the manipulation element or the operating nut in the inlet opening of the associated motor vehicle door lock is recommended in this context. Here, the invention is based on the recognition that the inlet mouth is directly accessible in case of emergency closure. Because the emergency closure requires that the locking mechanism is permanently open and can not be closed. Consequently, the motor vehicle door and in particular the inlet mouth is accessible. An operator can act on the accessible inlet mouth now the operating nut so that the drive element and with him the entire drive undergoes the described emergency closure. As a result, the pawl is not (more) lifted from the catch. As a result, when the associated motor vehicle door is mechanically closed by the operator, as usual, the locking pin which enters the inlet mouth and subsequently interacts with the rotary catch ensures that the rotary latch is transferred to its closed position. Since the pawl has left its lifted position, it can first come into the pre-rest and then the main catch of the catch as desired and the associated motor vehicle door is locked as desired. As a result, any theft of the motor vehicle is effectively prevented. Nevertheless, the motor vehicle door can generally subsequently be opened again, for example via an intended lock cylinder, if the electric opening drive is still defective. Other measures for emergency opening are conceivable.

As a result, a motor vehicle door lock is provided, which is equipped with a particularly simple design actuator in particular for emergency closing. Because the mechanical actuating element used for emergency actuation of the drive element used at this point does not require any modifications to the otherwise maintained electric drive. Rather, it is sufficient if the actuating screw is arranged as part of the two-part actuator tangentially compared to the drive element. An additional manipulation element ensures the appropriate loading of the actuating screw. Here are the main benefits. In the following the invention with reference to drawings, which represent only a preferred embodiment, explained in more detail. Show it:

1 motor vehicle door lock according to the invention in a schematic overview with stalled electric drive, Fig. 2 shows the object according to Fig. 1 from a viewing direction along the arrow X in Fig. 1 and

Fig. 3 is a detail of Fig. 1 in the region of the drive element in perspective.

In the figures, a motor vehicle door lock is shown. The motor vehicle door lock generally has a merely indicated lock housing 1, 2. The lock housing 1, 2 is composed of a solid lock case 1 made of metal (steel) and a lock cover 2 (made of plastic). In lock case 1, a locking mechanism 3, 4 is mounted, which can be seen in particular in Fig. 1 approach. The locking mechanism 3, 4 is composed of a rotary latch 4 and a pawl 3 of conventional functionality.

The electric drive 5 to 9 is used here to open the locking mechanism 3, 4. For this purpose, the drive is 5 to 9 from an electric motor 5 and an output worm 6 on an output shaft of the electric motor 5 together.

The output screw 6 meshes with a drive element 7 as a further component of the electric drive 5 to 9. The drive element 7 in the exemplary embodiment is a worm wheel 7, which is equipped with an external peripheral toothing 14. The output worm 6 on the output shaft of the electric motor 5 engages with its individual worm turns in the outer peripheral toothing 14 of the worm wheel 7 and can put in this way the worm wheel 7 in rotation. In the exemplary embodiment corresponds to an opening of the locking mechanism 3, 4, a rotation of the worm wheel 7 in the indicated clockwise direction, and indeed so far until an arranged on the worm wheel 7 actuating cam 8 can operate on a trigger lever 9. As soon as the actuation cam 8 acts on the release lever 9 as shown in FIG. 1, this causes the release lever 9 to execute a counterclockwise movement, likewise indicated in FIG. 1, about its axis, so that the release lever 9 with its actuating arm 8 opposite the actuation cam 8 the pawl 3 lifts off from its engagement with the rotary latch 4.

Now remains the described electric or electric motor drive 5 to 9 in the open position of the locking mechanism 3, 4 as shown in FIG. 1 are, for example, because the electrical power supply to the electric motor 5 is interrupted, fails or otherwise as the electric drive blocked to 9, so equipped with the corresponding motor vehicle door lock motor vehicle door can not (more) be closed. In this case, the electric drive 5 to 9 in the illustrated example or its drive element 7 indirectly on the locking mechanism 3, 4, namely on the release lever 9. In principle, the electric drive 5 to 9 but also ensure immediately that the pawl 3 of her Engagement with the catch 4 is lifted.

If the electric drive 5 to 9 in the functional position according to FIG. 1 "open" with respect to the locking mechanism 3, 4 for the described reasons, so the locking mechanism 3, 4 emergency actuate or emergency close. For this purpose, a mechanical actuator 10, 1 1, 12 realized. With the help of this mechanical actuator 10, 1 1, 12, the drive element 7 is applied to the emergency or emergency.

It can be seen on the basis of the overview drawing according to FIG. 1 that the actuating element 10, 11, 12 is essentially equipped in two parts with an actuating worm 10 and a manipulation element 11, 12. The actuating element 10, 1 1, 12 or its actuating screw 10 engages radially on the drive element 7. For this purpose, the actuating screw 10 is a total arranged tangentially compared to the drive element 7. The actuating worm 10 has - like the output worm 6 - comparable worm threads or worm threads 13 of the same or at least similar pitch, which can be brought into engagement with the outer peripheral toothing 14 of the drive element or worm wheel 7. This is evident in particular with reference to FIG. 3. On the basis of this illustration it is also clear that the outer peripheral toothing 14 of the worm wheel 7 and the worm threads 13 of the actuating screw 10 in the normal operation shown in FIG. 3 do not intermesh. Only when it comes to an emergency operation and an associated emergency closure or should come, the actuating screw 10 is rotated, for example in the clockwise direction shown in FIG.

As a result, a recess 15 in the toothing or the worm threads 13 of the actuating worm 10 is moved away from its orientation in normal operation opposite the toothing 14 of the drive element or worm wheel 7. Rather, it comes in this case, the emergency operation or emergency closure to the fact that the two gears 13, 14 can comb and comb with each other. For in emergency operation, the worm threads 13 of the actuating screw 10 engage in the outer peripheral toothing 14 of the worm wheel 7. Overall, this engagement causes the drive element or worm wheel 7 to execute a counterclockwise movement in the illustration of FIG. 1, so that the actuating cam 8 does not act on the trigger element 9 (more) on the drive element 7. As a result, the pawl 3 is not (more) lifted against the catch 4. Rather, the locking mechanism 3, 4 can easily be mechanically closed thereafter, in which a locking bolt (not shown in detail) enters a catch opening 16 in the lock case 1 to be recognized in FIG. 2.

The retracting into the inlet mouth 16 locking pin interacts with the rotary latch 4, which is transferred to its closed position. Since the pawl 3 is no longer lifted, they can first come into the Vorrast and then the main catch of the catch 4. The locking mechanism 3, 4 can be closed mechanically as usual. It can be seen on the basis of FIG. 3 that the recess 15, on the one hand, and the teeth or worm threads 13 of the actuating worm 10, on the other hand, cover and occupy different circle segments of a full circle. The division may be made such that belongs to the recess 15 in about one third of the full circle, whereas the worm threads 13 occupy about two-thirds of the full circle. Of course, this is only an example. In any case, the two-thirds occupancy of the full circle on the part of the worm threads 13 are sufficient to pivot the drive element 7 so far counterclockwise in Fig. 1 by the described rotational loading of the actuating screw 10 in the clockwise direction indicated in Fig. 3 that the actuating cam. 8 not (more) the release lever 9 acted upon. As a result, the release lever 9 releases the pawl 3 and the locking mechanism 3, 4 and with it the motor vehicle door lock and consequently the motor vehicle door as a whole can be mechanically closed.

For the manual loading of the two-part actuating element 10, 1 1, 12 provides the aforementioned manipulation element 1 1, 12. From the illustration in FIG. 1 it can be seen that the manipulation element 1 1, 12 and the actuating screw 10 are arranged at an angle to each other , The manipulation element 1 1, 12 has a, for example, in the lock housing 1, 2 mounted actuation nut 12. Actually, the operating 12 is stored according to the embodiment in the lock case 1, and there in the previously described inlet mouth 16. The inlet mouth 16 is open when the vehicle door and consequently required emergency closure accessible from the outside, so that an operator can easily pivot the actuating nut 12 in question. About the pivotal movement of the actuating nut 12, a connecting member or a connecting rod 1 1 and consequently the actuating screw 10 is rotated and ensures by the engagement of the worm threads 13 in the outer peripheral toothing 14 of the Worm wheel 7 ensures that the actuating cam 8, the release lever 9 is not applied (more).

As already explained, the manipulation element 1 1, 12 on the one hand and the actuating screw 10 on the other hand are arranged at an angle to each other. In addition, the manipulation element 1 1, 12 and the actuating screw 10 rotatably coupled to each other, so that the described and introduced via the actuating nut 12 in the manipulation element 1 1, 12 rotational movements are also transmitted to the actuating screw 10 as rotational movements. As a result of the angular arrangement between the manipulation element 1 1, 12 and the actuating screw 10 is worked at this point with, for example, an elastic connection. The actuating screw 10 and the manipulation element 1 1, 12 can also be rotatably coupled to each other via a bevel gear.

Claims

claims:

1 . Motor vehicle door lock, with a locking mechanism (3, 4), and with a drive (5 to 9) for the ratchet (3, 4), in particular for electrical opening / closing, wherein the drive (5 to 9) with at least one drive element (7 ), which works indirectly or directly on the locking mechanism (3, 4), characterized in that a mechanical actuating element (10, 1 1, 12) for emergency operation of the drive element (7) is provided.

2. Motor vehicle door lock according to claim 1, characterized in that the actuating element (10, 1 1, 12) acts radially on the drive element (7) to its rotation.

3. Motor vehicle door lock according to claim 1 or 2, characterized in that the drive element (7) and the actuating element (10, 1 1, 12) are each equipped with a toothing (13, 14).

4. Motor vehicle door lock according to claim 3, characterized in that the two teeth (13, 14) do not interlock in normal operation and only mesh with each other for emergency operation.

5. Motor vehicle door lock according to claim 3 or 4, characterized in that the toothing (13) of the actuating element (10, 1 1, 12) is equipped with a recess (15).

6. Motor vehicle door lock according to claim 5, characterized in that the recess (15) of the toothing (13) of the actuating element (10, 1 1, 12) in normal operation of the toothing (14) of the drive element (7) opposite.

7. Motor vehicle door lock according to one of claims 1 to 6, characterized in that the actuating element (10, 1 1, 12) has a tangentially on the drive element (7) arranged actuating screw (1 0).

8. Motor vehicle door lock according to claim 7, characterized in that the actuating element (10, 1 1, 12) in two parts with the actuating screw (10) and a manually manipulatable manipulation element (10, 1 1) is equipped.

9. Motor vehicle door lock according to claim 8, characterized in that the manipulation element (10, 1 1) and the actuating screw (10) are arranged at an angle to each other.

10. Motor vehicle door lock according to claim 8 or 9, characterized in that the manipulation element (10, 1 1) has an example in the lock housing (1, 2) mounted actuating nut (12).