WO2019068276A1

WO2019068276A1 - Motor vehicle door lock

Info

Publication number: WO2019068276A1
Application number: PCT/DE2018/100771
Authority: WO
Inventors: Thorsten Bendel; Ömer INAN; Michael Scholz; Holger Schiffer; Thomas SCHÖNENBERG
Original assignee: Kiekert Ag
Priority date: 2017-10-06
Filing date: 2018-09-12
Publication date: 2019-04-11
Also published as: DE102017123256A1

Abstract

The invention relates to a motor vehicle door lock which is equipped with a locking mechanism (3, 4) and a drive (6 to 10) for the locking mechanism (3, 4). The drive (6 to 10) has at least one drive element (8) which acts directly or indirectly on the locking mechanism (3, 4). According to the invention, a mechanical actuation element (11) is additionally provided for actuating the drive element (6 to 10) 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 of her is with the aid of the electric opening drive with the locking mechanism closed Removed intervention with the catch (see, for example, only as an example 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, for example, does not return to its position after an opening movement. Such scenarios are conceivable if, for example, 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 maintains this functional position. 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 an additional mechanical actuator, which is designed as a foreign object, is provided for emergency operation of the drive element, which interacts directly or indirectly with the drive element if necessary.

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, after a manual application, the mechanical actuating element again ensures that the drive element blocked or otherwise stopped during the closing operation is in turn mechanically moved back into its basic position becomes. 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 the invention, the additional actuating element is a foreign element of the lock, that is to say one which typically does not belong to the motor vehicle door lock and is also not arranged in the interior of the motor vehicle door lock. Rather, the lock-foreign actuator is used for emergency operation of the drive element in case of need and brought into interaction with the motor vehicle door lock or in particular the drive element. For this purpose, the actuating element advantageously engages radially on the drive element to rotate it. Due to the non-lock character of the actuator according to the invention must generally be taken to ensure that the actuating element for emergency operation is actually available.

If the actuating element is a specially adapted auxiliary tool, it can be mounted, for example, in a receptacle in the motor vehicle, for example in the glove compartment, in a tool bag or at another accessible location. Basically, as an actuating element but also a not specially adapted tool, For example, a screwdriver or a vehicle key can be used.

In a preferred embodiment, the actuating element is intended to engage radially on the drive element to its rotation. Here, the invention is based on the recognition that the drive element is generally equipped with a peripheral toothing, in which the actuating element can engage radially to effect the desired rotation.

If the actuating element is a specially adapted auxiliary tool, generally the actuating element and the drive element are each equipped with a toothing. It is understood that the two gears are adapted to each other on the one hand the actuating element and on the other hand the drive element in this case. In this case, unintentional damage to the drive element can be avoided by adapting the toothing of the actuating element and the drive element to each other. In principle, however, the actuating element can also do without toothing. In this case, the actuator typically has an engaging in the toothing of the drive element extension. Either way, the actuator is usually designed as a non-closing component or element, which interacts with the drive element in case of need, in order to reverse this to its normal position.

To realize this in detail, the interpretation is usually made so that the actuator for emergency operation passes through an opening in the lock housing. In this case, it is possible to proceed in such a way that the opening in question is configured to be closed once or several times. In the case of the one-time closability, for example, the procedure is such that the opening is closed by a film, a plastic film, etc., which is pierced with the aid of the actuating element. In this case, the opening then be closed again only after a tool stay, for example, which is anyway usually required in case of failed drive and the described emergency operation. But it can also be done so that the opening is formed repeatedly closed. In this case, the opening is equipped, for example, with a cover or generally a cover or a closure element which can be removed by an operator first and attached again after the emergency operation or emergency closure.

In this context, it has proved to be particularly advantageous if the opening in question is arranged for the actuating element in the region of an inlet mouth of the motor vehicle door lock. The inlet mouth typically serves to allow a body-side locking bolt to retract into the motor vehicle door lock and interact with the locking mechanism located in the interior. Since the associated motor vehicle door generally can not be closed (more) in the event of a failed drive for electrical opening, the inlet opening is accessible in this case. In this respect, an opening arranged there is predestined for the described emergency operation or an emergency closing operation.

In addition, such an opening can be realized and implemented from the outset and the factory in the motor vehicle door lock according to the invention, which also applies to an advantageously provided in the lock housing guide for the actuator. With the help of this guide in the interior of the lock housing ensures that the actuator when penetrating the opening can also interact accurately with the drive element to enable this in rotation. In fact, the guide is usually arranged so that the actuating element guided thereby can act radially on the drive element to its rotation. The guide can be a hollow bore, lateral webs, grooves, etc. Since the opening is usually provided in the region of the inlet mouth and the inlet mouth is usually defined in a lock case as part of the lock housing, it has been proven to realize the opening from the outset and factory. The same applies to the guide in the lock housing or lock cover as a further part of the lock housing. In this case, the invention is based on the recognition that the lock housing typically consists of the lock case in question for mounting the locking mechanism on the one hand and the lock cover made of plastic for locking the lock case. In this plastic lock cover, the guide can be easily defined and attached, because it is in the lock cover is generally a plastic injection molded part. As a result, in this context, for example, guide ribs easily integrate into the plastic injection molding process and are immediately available for the emergency operation described in case of need.

As a result, a motor vehicle door lock is provided, which is set up for emergency actuation of the drive element and in particular for emergency closing of the locking mechanism. For this purpose, a lock-foreign actuator is provided, which can interact in the course of emergency operation through an opening with the drive element to its rotation.

With the aid of the actuating element, the drive element is pivoted so far until the pawl leaves its lifted position in comparison to the rotary latch. Now, the locking pin entering the inlet mouth can interact with the rotary latch and transfer it into the closed position. At the same time, the pawl is able to first come into the pre-catch and then into the main catch of the catch. That is, the associated motor vehicle door can be easily closed mechanically and manually. This also applies and in particular when the electric or electromotive drive has failed to open the locking mechanism. If the associated motor vehicle door is to be opened, this can be done, for example, via a lock cylinder in the case of a driver's door. Another door inside the motor vehicle can be opened without any problem if the driver's door is open, and as a result the operator has access to the vehicle interior. This allows the operator to open the desired motor vehicle doors from the inside. Here are the main benefits.

Furthermore, the invention comprises a mechanical actuator for emergency operation of the drive element of a motor vehicle door lock, with a toothing, which is adapted to a toothing of the drive element.

In the following the invention with reference to drawings illustrating two preferred embodiments of the invention, explained in more detail. Show it:

Fig. 1 shows the motor vehicle door lock according to the invention in an overview, Fig. 2 is a view of the article of FIG. 1 from the direction X and

Fig. 3, the trained as an auxiliary tool actuator in detail, Fig. 4 shows an alternative embodiment of the motor vehicle door lock. In the Fig. A motor vehicle door lock is shown, which initially has a lock housing 1, 2. The lock housing 1, 2 is composed in detail of a metallic and solid lock case 1 (steel) on the one hand and a plastic-made lock cover 2 on the other hand to lock the lock case 1 together. The lock cover 2 is produced in the course of a plastic injection molding process. In lock case 1, a locking mechanism 3, 4 is mounted, which is indicated only in FIG. 1. The locking mechanism 3, 4 is composed of a pawl 3 and a rotary latch 4. The locking mechanism 3, 4 interacts with a locking pin, not shown, which can interact via an inlet mouth 5 as shown in FIG. 2 with the locking mechanism 3, 4 in a closing operation.

In addition, it can still be seen an electric or electric motor drive 6 to 10 for the ratchet 3, 4. The drive 6 to 10 is composed of an electric motor 6, the output shaft is equipped with an output worm 7. The output screw 7 meshes with a peripheral toothing 8a of a drive element 8. Consequently, the drive element 8 is formed as a worm wheel 8 with toothing 8a. The drive element or worm wheel 8 carries an actuating cam 9, which in turn operates on a release lever 10 as part of an operating lever mechanism in the interior of the lock housing 1, 2. In this respect, the drive element 8 interacts indirectly with the ratchet 3, 4, namely on the release lever 10. In principle, the drive element 8 but also work directly on the pawl 3. Then there is an immediate interaction.

In the illustration according to FIG. 1, the release lever 10 is in the loaded state and, in turn, ensures that the pawl 3 is lifted off its engagement with the rotary latch 4. For this purpose, the position "open" corresponds to the locking mechanism 3, 4 and consequently the motor vehicle door lock as a whole.

Is it now in such an opening operation with the aid of the electric drive 6 to 10 to open the locking mechanism 3, 4 to the fact that the electrical power supply to the electric motor 6 fails, the drive 6 to 10 is mechanically blocked or otherwise as the drive element 8 is not in his Moves back home position, so the trigger lever 10 in total ensures that the pawl 3 your lifted off the catch 4 position retains. In fact, an opening operation of the electric drive 6 to 10 according to the embodiment and corresponding to the illustration in FIG. 1 corresponds to the fact that the drive element 8, starting from its basic position, completes a clockwise movement as indicated in FIG.

By the clockwise movement of the initially not interacting with the trigger lever 10 actuating cam 9 comes to rest on release lever 10 and ensures that the release lever 10 is pivoted counterclockwise, as is also indicated in Fig. 1. The counterclockwise rotation of the trigger lever 10 has the consequence that his the actuating cam 9 opposite arm the pawl 3 as described lifts off from their engagement with the rotary latch 4. If it comes to the described blockage of the electric drive 6 to 10 in this open position and shown in FIG. 1, the pawl 3 remains in its lifted position relative to the rotary latch 4. Even if the locking pin thus in this lifted position on the inlet mouth. 5 interacts with the catch 4 and this transferred to the closed position, this closed position is not maintained because the lifted pawl 3 can not fall into the catch 4.

In order to realize an emergency operation and in particular emergency closing of the motor vehicle door lock and consequently of the locking mechanism 3, 4 in such a case, according to the invention a mechanical actuating element 11 is provided for emergency actuation of the drive element 8. When the actuator 1 1 is a foreign-castle component, ie a component which is not part of the illustrated motor vehicle door lock in the state of delivery and in normal operation. Rather, the actuator comes 1 1 only in an emergency and in the described emergency operation for use. The actuating element 11 may in principle be a suitable tool, for example a screwdriver. In this case, the actuating element 1 1 has an engaging in the circumferential toothing 8a of the drive element 8 extension. Particularly advantageously, the actuating element 1 1 is designed as an auxiliary tool, which according to the detailed illustration of FIG. 3 on the one hand a handle 1 1 a and on the other hand, a toothing 1 1 b has.

In the course of the emergency operation or emergency closing, the actuating element 1 1 or auxiliary tool engages radially on the drive element 8 to its rotation. In this case, the toothing 11 b on the auxiliary tool 1 1 engages in the outer peripheral side toothing 8a of the drive element 8 or the worm wheel and overall ensures that the worm wheel 8 is pivoted counterclockwise starting from the functional position shown in FIG. The drive element 8 is reversed and reaches its basic position (again). The toothing 1 1 b is adapted to the outer peripheral toothing 8 a of the drive element 8. The actuating element 1 1 or auxiliary tool is thus designed as a specially adapted auxiliary tool. The counterclockwise movement of the drive element 8 caused by the actuating element 11, respectively, causes the actuating cam 9 to leave the release lever 10, and consequently the release lever 10 pivots back clockwise and the pawl 3 is not acted upon (more). Now, the pawl 3 at a closing operation of the locking mechanism 3, 4 with the help of the locking bolt first in the pre-latching and then in the main catch of the rotary latch 4 and ensures overall that the associated motor vehicle door is mechanically closed. This leads to the already described emergency closure. So that the actuating element 1 1 for emergency operation with the drive element 8 can interact as described, a total of one in particular in FIG. 2 to be recognized opening 12 in the lock housing 1, 2 realized. The questionable Opening 12 may be formed once or multiple closable. In the former case, the opening 12 may be closed by means of a film, a film, a plastic cover, which is pierced by means of the actuating element 1 1, so that the actuating element 1 1 can penetrate into the interior of the lock housing 1, 2, with the Drive element 8, as described and shown in FIG. 1, to be able to interact. But it is also possible that the opening 12 is formed repeatedly closable. In this case, an indicated in Fig. 2 closure element or a cover 13 is provided for the opening 12, which must first be removed by an operator, so that the actuating element 1 1 can pass through the opening 12. After emergency closure, the closure element or the cover 13 is again inserted into the opening 12 in order to close the lock housing 1, 2 in total. As shown in FIG. 2, the opening 12 in question is provided in the region of the inlet opening 5. As a result, the opening 12 is directly accessible for the emergency operation or emergency closure. Because in this case, the vehicle door can not close, is therefore open, so that the inlet mouth 5 is accessible and an operator can easily remove the cover or the closure element 13 as described.

In the interior of the lock housing 1, 2 can be seen finally a guide 14 for the actuator 1 first In the guide 14 may be guide ribs that can be easily defined in the lock cover 1, because this is a plastic molding. The guide ribs 14 extend in the end, starting from the opening 12 in the direction of the drive element 8. In addition, the guide 14 is oriented so that the actuating element 1 1 can engage radially on the drive element 8 to its rotation.

In fact, the design is such that the guide 14 is oriented not only radially in the direction of the drive element 8, but also in the direction of an area above an axis of rotation of the drive element 8, so that guided by means of the guide 14 actuator 1 1 - as described - the drive element 8 is pivoted by its application in the counterclockwise direction. As a result thereof, the actuating cam 9 is released from the release lever 10 and the release lever 10 in turn releases the pawl 3, which can then occur in a closing operation of the locking mechanism 3, 4 first in the pre-locking and then the main catch of the rotary latch 4. This makes it possible to close the associated motor vehicle door. 4, a further embodiment of the invention is shown. This is essentially the same as the previous embodiment, which is shown in particular in FIGS. Components which are identical in both embodiments are designated by the same reference numerals.

In the second embodiment, the release lever 10 has a clutch lever 15. For emergency operation of the drive element 8, the actuating element 1 1 engages the clutch lever 15. As a result, the release lever 10 can be actuated and the drive element 8 emergency. For this purpose, depending on the configuration of the clutch lever 15, a pressure movement, which is exerted by the actuating element 1 1, or a pulling movement, which is exerted by the actuating element 1 1, may be required. In the latter case, it may be necessary to exercise the pulling movement to hook the actuator 1 1 to the clutch lever 15.

Claims

claims:

1 . Motor vehicle door lock, with a locking mechanism (3, 4), and with a drive (6 to 10) for the locking mechanism (3, 4), in particular for electrical opening / closing, wherein the drive (6 to 10) with at least one drive element (8 ), which works directly or indirectly on the ratchet (3, 4), d ad urchge ke nnzeichnet that an additional mechanical actuator (1 1), which is designed as a foreign part, for emergency operation of the drive element (8) is provided which, if necessary, interacts directly or indirectly with the drive element (8).

2. Motor vehicle door lock according to claim 1, characterized in that the actuating element (1 1) acts radially on the drive element (8) to its rotation.

3. Motor vehicle door lock according to claim 1 or 2, characterized in that the actuating element (1 1) and the drive element (8) are each equipped with a toothing (1 1 b, 8a).

4. Motor vehicle door lock according to one of claims 1 to 3, characterized in that the actuating element (1 1) has a in the toothing (8 a) of the drive element (8) engaging projection.

5. Motor vehicle door lock according to one of claims 1 to 4, characterized in that the actuating element (1 1) for emergency operation, an opening (12) in the lock housing (1, 2) passes through.

6. Motor vehicle door lock according to claim 5, characterized in that the opening (12) is formed once or repeatedly closed.

7. Motor vehicle door lock according to claim 6, characterized in that a closure element (13) for the opening (12) is provided.

8. Motor vehicle door lock according to one of claims 5 to 7, characterized in that the opening (12) in the region of an inlet mouth (5) is arranged.

9. Motor vehicle door lock according to one of claims 1 to 8, characterized in that a guide (14) in the lock housing (1, 2) for the actuating element (1 1) is provided.

10. Mechanical actuator (1 1) for emergency operation of the drive element (8) of a motor vehicle door lock according to one of claims 1 to 9, characterized by a toothing (1 1 b), which is adapted to a toothing (8 a) of the drive element (8).