EP3907358A1 - Motor vehicle lock - Google Patents

Abstract

The invention relates to a motor vehicle lock, in particular a motor vehicle door lock, which is equipped with a locking mechanism consisting of the essential rotary latch and pawl. In addition, a rotary electric motor drive (1) is provided for the locking mechanism. The electromotive drive (1) has a rotatable drive element (1) which can be acted upon in at least one direction of movement and an opposite direction of movement. At least one first locking position and one second locking position can be controlled with the aid of the drive element (1). According to the invention, the drive element (1) is also set up to control at least one further third safety position.

Description

The invention relates to a motor vehicle lock, in particular a motor vehicle door lock, with a locking mechanism consisting essentially of a rotary latch and pawl, and with a rotating electromotive drive for the locking mechanism, the electromotive drive being acted upon and rotatable in at least one direction of movement and an opposite direction of movement Having drive element, and wherein with the aid of the drive element at least a first securing position and a second securing position can be controlled.

The motor vehicle lock is in particular a motor vehicle door lock. In principle, the term motor vehicle lock also includes motor vehicle bonnet locks, motor vehicle tailgate locks, motor vehicle fuel tank flap locks, motor vehicle seat locks, etc. In motor vehicle door locks and in particular motor vehicle side door locks, the control of different functional states and in particular different locking positions is of particular importance. These locking positions generally correspond to different security positions, for example "locked / unlocked", "theft-protected / theft-unlocked" and "child-safe / child-unlocked".

As part of the DE 10 2015 116 283 A1 an actuating device for a motor vehicle lock is already described, which has a multifunction clutch lever. An opening movement of the multifunction clutch lever corresponds to the opening of the locking mechanism. This opening movement can be prevented overall by an associated anti-theft device, a central locking device and a child safety device.

For this purpose, among other things, an electric drive for the central locking lever as well as an independent and additional one Electric drive provided for the anti-theft lever.

In a comparable embodiment according to DE 10 2005 052 190 A1 the procedure is also such that a drive motor acting on the locking element and an additional anti-theft or child-proof motor are implemented. Both the locking motor and the anti-theft motor each work on an interposed worm gear, which overall complicates the structural design and entails increased costs.

For this reason there is in the generic prior art according to EP 1 113 133 A1 There are already attempts to use one and the same rotary electromotive drive in order to implement a child safety function in one direction of movement and, among other things, a central locking function in the opposite direction of movement. That is, with the aid of a rotary electromotive drive, a first safety position in the form of the child safety function and a second safety position in the form of the central locking function are controlled in the generic prior art. This has basically proven its worth.

In the further prior art according to EP 0 826 855 A2 a lock is also addressed, in particular for vehicle doors or the like, which has a coupling element that can be moved by an actuating device in order to be able to act on the pawl as part of the locking mechanism. The coupling element can be moved by the adjusting device in at least three positions, namely in the anti-theft position, central locking position and child-proof position. The actual application of the pawl is done manually via the coupling element. In addition, the actuating device works on the coupling element via a linearly displaceable actuator. Such a linearly operating actuator requires a relatively large amount of installation space, which is typically not available inside a motor vehicle lock. The invention aims to provide a remedy here overall. The invention is based on the technical problem of further developing such a motor vehicle lock and, in particular, a motor vehicle door lock in such a way that, taking into account a compact and cost-effective structure, the design effort is again reduced compared to the previous procedure.

To solve this technical problem, the invention proposes in a generic motor vehicle lock that the drive element is additionally set up to control at least one further third securing position.

In the context of the invention, only the rotary electric motor drive with its rotatable drive element that can be acted upon in the direction of movement and in the opposite direction of movement ensures that the first locking position, the second locking position and then at least one further third locking position can be controlled. The first securing position is usually a locked position or a centrally locked position. The second security position generally belongs to the anti-theft position, whereas the third security position corresponds to the child-resistant functional position. In addition, the (single) drive element in connection with the (single) rotating electromotive drive is also set up within the scope of the invention in that all three safety positions can not only be assumed or controlled, but also - independently of one another - can be re-designed .

That is to say, the mentioned and at least three securing positions can be controlled and, if necessary, designed in the direction of movement, in the opposite direction of movement or in both directions of movement of the drive element. In this way, it is possible within the scope of the invention that with the aid of the (a single) rotating electromotive drive, all essential safety positions can be inserted and disengaged again. The electromotive drive is therefore able to display and approach the functional positions "locked / unlocked" or "centrally locked / centrally unlocked" as well as "theft-proof / theft-unlocked" and finally "child-proof / Kinderentsichert ". All of this succeeds taking into account a compact and cost-optimized structure that has so far remained unprecedented in the state of the art Because by resorting to a single rotary electric motor drive, it is used many times over the life of the vehicle, so that functions that are seldom or practically never used can still be implemented perfectly and reliably. This applies in particular to the child safety function, which is often only required very seldom and is usually only used on the rear side doors of the motor vehicle anyway The functional positions can be approached perfectly and reliably even after years. This is where the main advantages can be seen.

According to an advantageous embodiment, the drive element for controlling the first safety position interacts with a locking lever and at least one first blocking lever. The first blocking lever is usually designed in two parts with an unlocking arm and a locking arm. The unlocking arm and the locking arm can each be rotatably and coaxially mounted. In addition, the design is usually made in such a way that the locking lever is equipped with a respective control arm for acting on the unlocking arm and the locking arm.

That is, the locking lever has a total of two control arms, one control arm interacting with the unlocking arm as part of the first blocking lever, whereas the second control arm interacts with the locking arm as a further component of the first blocking lever.

The drive element is also advantageously set up for controlling the second security position with an anti-theft lever and at least one second blocking lever. In other words, the drive element interacts with the control of the second safety position questionable anti-theft lever and the at least one second blocking lever. The second blocking lever in question is typically elastically coupled to the anti-theft lever.

As a consequence of this, when the anti-theft lever is acted on, the blocking lever can be taken along via the elastic coupling, as will be explained in more detail below with reference to the description of the figures. The selective insertion and removal of the anti-theft lever and consequently the anti-theft function means that the functional position in question can be approached independently of other functional positions. For example, it is not necessary to take the locking position beforehand.

In addition, the design is then made such that the anti-theft lever is usually articulated to at least one anti-theft lever. The anti-theft lever can be controlled selectively via the anti-theft lever. In most cases, it is possible to selectively disengage or insert the anti-theft lever at this point. In addition, it has proven itself in this context if the anti-theft locking lever itself is designed in two parts, which is also explained in more detail below with reference to the description of the figures.

Finally, the drive element interacts advantageously with a child safety lever in order to control the third safety position. In this case, no additional blocking lever is required because the child safety function is generally spring-preloaded in the direction of its designed position and the child safety lever only has to be moved against this spring preload to insert the child safety function.

The individual safety positions usually correspond to different operating levels. As a result, the securing positions can be approached and laid out again independently of one another. Together with the two directions of movement, there are enough degrees of freedom available to ensure functionally reliable operation. Finally, the drive element is advantageously designed as a drive pulley. The drive pulley generally has at least one control contour for interaction with the locking lever, the anti-theft lever and the child safety lever. That is, with the help of this one (single) control contour on the drive pulley, the locking lever, the anti-theft lever and the child safety lever can be inserted, for example. In some cases, the lever in question can also be designed with the aid of the control contour or another additional control contour. All of this succeeds taking into account a compact, cost-effective and functionally reliable structure. This is where the main advantages can be seen.

• Fig. 1 Das erfindungsgemäße Kraftfahrzeug-Schloss im Zustand "entriegelt" in seiner Grundstellung,
• Fig. 2 das Kraftfahrzeug-Schloss nach der Fig. 1 zu Beginn eines Verriegelungsvorganges,
• Fig. 3 das Kraftfahrzeug-Schloss nach den Figuren 1 und 2 im Zustand "verriegelt",
• Fig. 4 den Rücklauf des Antriebselementes bzw. der Antriebsscheibe ausgehend von der Position in der Fig. 3,
• Fig. 5 das Einlegen der Diebstahlsicherung zu Beginn,
• Fig. 6 und 7 die fortschreitende Bewegung beim Einlegen der Diebstahlsicherung,
• Fig. 8 den Rücklauf des Antriebselementes bzw. der Antriebsscheibe ausgehend von der eingelegten Diebstahlsicherung nach der Fig. 7,
• Figuren 9 und 10 das Auslegen der Diebstahlsicherung ausgehend von der Stellung nach Fig. 8,
• Figuren 11 und 12 das Auslegen der Diebstahlsicherung und gleichzeitiges entriegeln und
• Figuren 13 und 14 das Ein- und Auslegen der Kindersicherung.

In the following, the invention is explained in more detail with reference to a drawing showing only one embodiment; show it:

• Fig. 1 The motor vehicle lock according to the invention in the "unlocked" state in its basic position,
• Fig. 2 the motor vehicle lock after the Fig. 1 at the beginning of a locking process,
• Fig. 3 the motor vehicle lock according to the Figures 1 and 2 in the "locked" state,
• Fig. 4 the return of the drive element or the drive pulley starting from the position in the Fig. 3 ,
• Fig. 5 inserting the anti-theft device at the beginning,
• Fig. 6 and 7th the progressive movement when inserting the anti-theft device,
• Fig. 8 the return of the drive element or the drive pulley starting from the inserted anti-theft device after the Fig. 7 ,
• Figures 9 and 10 the design of the anti-theft device based on the position according to Fig. 8 ,
• Figures 11 and 12th the laying out of the anti-theft device and simultaneous unlocking and
• Figures 13 and 14th inserting and removing the child safety device.

In the figures, a motor vehicle lock is shown which has a locking mechanism (not specifically shown) consisting essentially of a rotary latch and a pawl. In addition, a rotative (single) electromotive drive 1 is implemented for the locking mechanism, which according to the exemplary embodiment is reduced to a rotatable drive element 1 that can be acted upon in at least one direction of movement and an opposite direction of movement. According to the exemplary embodiment, the rotatable drive element 1 is a drive pulley which can be acted upon around an axis 2 in one direction of movement (counterclockwise) and in an opposite direction of movement (clockwise).

This is only ensured by a Fig. 1 indicated electric motor 4, which has a worm 3 on its output shaft, which in turn meshes with an external toothing of the drive pulley 1 in a known manner and in this way ensures that the drive pulley 1 the previously described rotations in the direction of movement or in Can perform counterclockwise and in the opposite direction of movement or clockwise.

With the help of the drive element or the drive pulley 1, a first security position or locking position, a second security position or anti-theft position and finally a further third security position or child security position can be approached. The first safety position or locked position is in the Fig. 4 shown. The second security position or anti-theft position is the subject of Fig. 8 . The parental control position, on the other hand, is in the Fig. 13 reproduced. In addition, the positions in question Of course, they can also be laid out again, as will be explained in detail below.

The securing positions in question can be controlled in the direction of movement, in the opposite direction of movement or in both directions of movement of the drive element or the drive pulley 1. The same applies to the laying out. This means that the three safety positions mentioned are assumed and canceled solely by the electric motor 4 acting on the drive element or drive pulley 1 in the direction of movement or in the opposite direction of movement.

For this purpose, the drive element 1 interacts with a locking lever 5 and at least one first blocking lever 6, 7 to control the first safety position or locking position. In fact, the first blocking lever 6, 7 is designed in two parts with an unlocking arm 6 and a locking arm 7. This can be seen in particular from the Figures 1 to 4 . The two arms 6, 7 are mounted coaxially in a common axis 8. In addition, a spring is provided which the two arms 6, 7 in their in the Fig. 1 largely right-angled alignment to one another biases shown as an example. Finally, two control arms 9, 10 that are connected to the locking lever 5 are also relevant in this context.

The control arm 9 acts to act on the unlocking arm 6, whereas the control arm 10 is responsible for acting on the locking arm 7 as part of the first blocking lever 6, 7.

Primarily in the Figures 5 to 8 you can then see an anti-theft lever 11. In addition, a second blocking lever 12 is implemented. The drive element or drive pulley 1 interacts to control the second security position or anti-theft position with the anti-theft lever 11 and at least the second blocking lever 12. The second blocking lever 12 is elastically coupled to the anti-theft lever 11, a spring 13 being interposed at this point . In addition, one recognizes in a comparative Viewing the Figures 5 to 8 that the anti-theft lever 11 is articulated to at least one anti-theft lever 14, 15. In fact, two anti-theft locking levers 14, 15 are implemented at this point. The anti-theft locking lever 15 is mounted on the anti-theft locking lever 14. The anti-theft locking lever 14 in turn engages in a hinge receptacle 16 on the anti-theft locking lever 11, which ensures the articulated coupling of the anti-theft locking lever 11 to the two anti-theft locking levers 14, 15.

Finally, the drive element or the drive pulley 1 interacts with a child safety lever 17 to control the third safety position, which is in particular in the Figures 13 and 14th can recognize. The child safety lever 17 is rotatably mounted in relation to an axis 18 in a lock housing (not shown in detail) in which the drive pulley 1 and the anti-theft lever 11 and also the other levers 12, 14, 15 are supported. A spring (not shown) ensures at this point that the child safety lever 17 is pretensioned in the direction of its designed position, as will be explained in more detail below.

Finally, you can still see a control contour 19 on the drive pulley 1. There is also another and primarily in the Fig. 10 and 11 illustrated control contour 20 is provided, which is referred to below in the description of the mode of operation. Of further importance are then two contours 21, which each extend radially on both sides of the control contour 19.

The way it works is as follows. In the Fig. 1 the motor vehicle lock is shown in the "unlocked" state. The basic position corresponds to this. In this functional position, the locking mechanism (not shown) consisting of the rotary latch and the pawl can be opened. This can be implemented manually or with the aid of a further electromotive drive or even with recourse to the illustrated electromotive drive or the drive pulley 1, although this is not illustrated in detail.

Starting from the functional position "unlocked" in the Figure 1 the motor vehicle lock can now be transferred to the first security position or the functional state "locked", as it is ultimately in the Fig. 4 is reproduced below. For this purpose, the electromotive drive 1 or the drive pulley 1 is moved in the direction of movement, that is, in the counterclockwise direction. You can see that when you transition from the Fig. 1 about the Fig. 2 to the Fig. 3 . Then the control contour 19 moves against the locking lever 5. This has the transition from the Fig. 1 to the Fig. 2 and up to Fig. 3 As a result, the locking lever 5 is pivoted about its axis 8 in a clockwise direction. At the same time, during this process, the locking lever 5 with its control arm 9 ensures that the unlocking arm 6, as part of the first blocking lever 6, 7, follows the clockwise movement. As a result, the unlocking arm 6 is pivoted in overlap with the drive pulley 1.

In fact, the design in the context of the exemplary embodiment is chosen such that the locking lever 5 and the blocking lever 6, 7 or both arms 6, 7 of the blocking lever 6, 7 are mounted coaxially with respect to the common axis 8. In any case, the unlocking arm 6 follows the action of the locking lever 5 and is pivoted clockwise about the axis 8.

As a result of this, the spring holding the two arms 6, 7 in their predominantly perpendicular position to one another is tensioned. This is possible because in the functional position after the Fig. 3 the contour 21 provided to the left of the control cam 19 interacts with a mating contour on the locking arm 7, which is consequently retained during this process. At the same time, the first blocking lever 6, 7 fulfills its original function, namely it ensures a blockage of the control cam 19 in the illustration according to the Fig. 3 . The locking lever 5 is now "locked" in the first safety position.

When transitioning from the Fig. 3 to the Fig. 4 the drive pulley 1 is returned after its previous blockage in the opposite direction of movement, that is, clockwise. This is ensured by a spring which acts on the drive pulley 1 and which is a center-zero spring or can act. In this process of returning the drive pulley 1 to the basic position, comparable to that Fig. 1 the left contour 21 moves away in comparison to the control contour 19 of the locking arm 7 as part of the blocking lever 6, 7. Accordingly, the locking arm 7 pivots during the transition from the Fig. 3 to the Fig. 4 so that subsequently the control contour 19 no longer moves against the locking arm 7, but rather is free from it.

Starting from the "locked" state or the first securing position according to FIG Fig. 4 the approach to the second security position or the functional position "theft-proof" is now described, as it is in its end position in the Fig. 8 is shown. For this purpose, the drive element or the drive pulley 1 moves starting from the functional position "locked" in accordance with FIG Fig. 4 in the direction of movement, that is counterclockwise until the control contour 19 comes to rest on the anti-theft lever 11, as is the case Fig. 5 represents. During the further movement of the drive pulley 1 in the direction of movement, the control contour 19 moving against the anti-theft lever 11 ensures that during the transition to the anti-theft position according to the reproduction in the Fig. 8 the anti-theft lever 11 is pivoted about its axis 22 clockwise. As a consequence of this, the anti-theft lever 11 ensures via the articulated connection or the hinge receptacle 16 that the anti-theft setting lever 14, 15 is actuated, namely essentially executes a counterclockwise rotation about its axis 23. In addition, the clockwise movement of the locking lever 11 about its axis 22 as a result of the application of the control contour 19 has the further effect that the second blocking lever 12 or the spring 13 is tensioned between the anti-theft lever 11 and the second blocking lever 12. As a result, the blocking lever 12 as a whole rests against the drive pulley 1.

With the further counterclockwise rotation of the drive pulley 1 in the direction of movement at the transition from the Fig. 6 to the Fig. 7 the control cam 19 finally moves against a stop 24 fixed to the housing. As a result, the drive or the electric motor 4 is stopped and the drive pulley 1 moves from the functional position to the Fig. 7th and again acted upon by the previously mentioned center-zero spring clockwise back towards the basic position, as can be seen in the sequence of figures Figures 7 and 8th can recognize. During this process, the second blocking lever 12 rests on the worm wheel or on the contour 21. As soon as the contour 21 has passed the second blocking lever 12, this can collapse into overlap with the drive pulley 1, as shown in FIG Fig. 8 becomes clear. The control contour 19 assumes its basic position and the anti-theft lever 11 is inserted. Logically, the motor vehicle lock is in its second security position "theft-proof".

Starting from this position "theft-proof" according to the Fig. 8 The anti-theft device is now designed selectively, i.e. only the anti-theft lever 11 such that the drive pulley 1 is acted upon in the direction of movement, so that the control contour 19 can act on the anti-theft lever 14, 15. At the same time, the contour 21 ensures that the second blocking lever 12 is held in the collapsed position. That is in the Fig. 9 shown.

When transitioning from the Fig. 9 to the Fig. 10 and when the control contour 19 moves further in the direction of movement, the control contour 19 now ensures that the anti-theft locking lever 14, 15 is pivoted clockwise about its axis 23. As a result of this, the anti-theft lever 11 is pivoted counterclockwise about its axis 22 due to the articulated connection with the anti-theft setting lever 14, 15. As a result, the anti-theft lever 11 at the same time ensures that the spring 13 is tensioned between the anti-theft lever 11 and the blocking lever 12.

As the movement of the control contour 19 continues, the anti-theft lever 11 is now completely disengaged via the anti-theft locking lever 14, 15, specifically selectively, that is to say viewed individually. That is in the Fig. 10 shown.

It can be seen that the control contour 19 initially moves against the second blocking lever 12. As a result, the electric motor 4 is switched off and the control contour 19 or the worm wheel 11 can be in its basic position move back in the opposite direction of movement. Now the basic position is "locked" again and shown with the anti-theft device in place, as it is already the subject of Fig. 4 was.

Based on the "anti-theft" position as shown in the Fig. 8 is now the laying out of the anti-theft device and the simultaneous unlocking in the Figures 11 and 12th reproduced and explained. That goes Fig. 11 ultimately from the functional position after the Fig. 8 and ensures that the drive pulley 1 is acted upon in the opposite direction of movement, i.e. clockwise, that the control contour 19 acts on the locking lever 5 in such a way that the locking lever 5 pivots about its axis 8 in the counterclockwise direction. The anti-theft lever 11 acts on the anti-theft lever 14, 15, which pivots clockwise about its axis 23. In addition, the anti-theft lever 11 ensures that the second actuating lever 12 is pivoted out in relation to the drive pulley 1 with the aid of the spring 13. Furthermore, the Fig. 11 the drive pulley 1 has been pivoted clockwise, as a result of which the anti-theft lever 11 is pivoted in the counterclockwise direction by means of a control contour 20 provided on the rear side of the drive pulley 1.

The contour 21 holds the unlocking arm 6 firmly. As a result, when transitioning from the Fig. 11 to the Fig. 12 follow the locking arm 7 and swivel in. In addition, the locking lever 5 is completely swiveled out about its axis 8 in this position and is "unlocked" in its functional position. The control contour 19 moves against the unlocking arm 6, so that the end position is reached as a result. Then the drive pulley 1 rotates counterclockwise and the blocking lever 6, 7 swivels out. The "unlocked" basic position has now been reached, as already described with reference to Fig. 1 has been illustrated and described.

In the Figures 13 and 14th Finally, the insertion of the child safety lever 17 and the control of the third safety position as well as its deployment is described. In fact, the functional position "child-proof" or the third security position can be used as shown in FIG the Fig. 13 starting from the basic position "unlocked" after the Fig. 1 be approached in such a way that the drive element or the drive pulley 1 is acted upon in the opposite direction of movement, that is to say in a clockwise direction. As a result, the control contour 19 moves against the child safety lever 17. The further movement of the control contour 19 now has the consequence that the child safety lever 17 is pivoted about its axis 18 with the help of the control contour 19, in the sense that the child safety lever 17 moves counterclockwise its axis 18 performs. Now the "child-safe" position is as shown in the Fig. 13 or the third safety position is reached.

In order to design the child safety device, it is only necessary that the drive element or the drive pulley 1 is acted upon in the direction of movement, that is to say in the counterclockwise direction. As a result, the control contour 19 moves increasingly away from the child safety lever 17, which as a result is pivoted clockwise by spring force about its axis 18 and thereby ultimately (again) "unlocks" the basic position after Fig. 1 achieved.

List of reference symbols

1

Drive pulley

2

axis

3

slug

4th

Electric motor

5

Locking lever

6th

Release arm

7th

Locking arm

8th

axis

9.10

Control arms

11

Anti-theft lever

12th

Blocking lever

13th

feather

14, 15

Anti-theft locking lever

16

Joint mount

17th

Child safety lever

18th

axis

19, 20

Control contour

21

Contours

22.23

axis

Claims (10)

Motor vehicle lock, in particular motor vehicle door lock, with a locking mechanism consisting essentially of a rotary latch and pawl, and with a rotating electromotive drive (1) for the locking mechanism, the electromotive drive (1) being acted upon in at least one direction of movement and an opposite direction of movement having a rotatable drive element (1), and wherein at least one first securing position and a second securing position can be controlled with the aid of the drive element (1),
characterized in that
the drive element (1) is also set up to control at least one further third securing position. Motor vehicle lock according to Claim 1, characterized in that the three securing positions can be controlled and, if necessary, designed in the direction of movement, in the opposite direction of movement or in both directions of movement of the drive element (1). Motor vehicle lock according to Claim 1 or 2, characterized in that the drive element (1) interacts with a locking lever (5) and at least one first blocking lever (6, 7) for controlling the first safety position. Motor vehicle lock according to Claim 3, characterized in that the first blocking lever (6, 7) is designed in two parts with an unlocking arm (6) and a locking arm (7). Motor vehicle lock according to claim 3 or 4, characterized in that the locking lever (5) is equipped with a respective control arm (9, 10) for acting on the unlocking arm (6) and the locking arm (7). Motor vehicle lock according to one of Claims 1 to 5, characterized in that the drive element (1) for controlling the second security position interacts with an anti-theft lever (11) and at least one second blocking lever (12). Motor vehicle lock according to Claim 6, characterized in that the second blocking lever (12) is elastically coupled to the anti-theft lever (11). Motor vehicle lock according to Claim 6 or 7, characterized in that the anti-theft locking lever (11) is articulated to at least one anti-theft locking lever (14, 15). Motor vehicle lock according to one of Claims 1 to 8, characterized in that the drive element (1) interacts with a child safety lever (17) for controlling the third safety position. Motor vehicle lock according to one of Claims 1 to 9, characterized in that the drive element (1) is designed as a drive disk (1) which has at least one control contour (19, 20) for interaction with the locking lever (5), the anti-theft lever (11 ) and the child safety lever (17).

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