EP3784855A1

EP3784855A1 - Motor vehicle lock

Info

Publication number: EP3784855A1
Application number: EP19721971.0A
Authority: EP
Inventors: Holger Schiffer; Michael Scholz; Cyrille ROUSSEL
Original assignee: Kiekert AG
Current assignee: Kiekert AG
Priority date: 2018-04-25
Filing date: 2019-04-15
Publication date: 2021-03-03
Anticipated expiration: 2039-04-15
Also published as: CN112004981B; DE102018109898A1; US20210040781A1; US11572715B2; CN112004981A; EP3784855B1; WO2019206370A1

Abstract

The invention relates to a motor vehicle lock (10), in particular for a vehicle rear door (110), having a lock cover (11) and a locking mechanism (12, 13) consisting essentially of a rotary latch (12) and at least one pawl (13), also comprising at least one coupling element (17, 18), and at least one electric drive (14, 15, 16), wherein the coupling element (17, 18) can assume different positions (I, II, III), and the coupling element (17, 18) interacts with a drive element (14) of the drive (14, 15, 16) and a central locking mechanism (40), wherein the coupling element (17, 18) is connected to the drive element (14) in order to take up its positions (I, II, III).

Description

Motor vehicle lock

description

The present invention relates to the field of

Motor vehicle locking systems and relates to a motor vehicle lock according to the preamble of independent claim 1 and a method according to the independent method claim. A motor vehicle lock according to the preamble of independent claim 1 has a lock cover and a locking mechanism consisting essentially of a catch and at least one pawl and further at least one coupling element and at least one electric drive, wherein the coupling element can assume different positions and the coupling element with a drive element of the drive and one

Central locking mechanism interacts, wherein the coupling element is connected to the drive element for taking its positions.

A motor vehicle lock of the type described above is usually attached to a motor vehicle door on the one hand and interacts with a body-side locking bolt. In addition, however, the arrangement may also be reversed, so that the locking pin on the motor vehicle door and the lock is arranged on the motor vehicle side.

Such motor vehicle locksmiths are equipped with a central locking mechanism and usually have different position and related functions. It is conceivable that the positions of the coupling element can be adjusted via the drive. Such motor vehicle locksmiths are known for example from DE 199 43483B4. On the one hand an anti-theft module and on the other hand a locking module are realized. There is also the possibility of the pawl directly or optionally with the interposition of a release lever on the anti-theft module to pick up.

A disadvantage of the known from the prior art motor vehicle mechanics, however, is that the positioning of the coupling element by means of the drive element can not be reliably provided.

There is therefore the need further develop motor vehicle locksmith to the effect that further develop a positioning of the coupling element and a functional position of the central locking mechanism to the effect that constructively and inexpensively, the above problems are solved.

The present invention is therefore based on the technical object of at least partially remedying the disadvantages known from the prior art. In particular, it is the object of the present invention, cost and constructively advantageous to provide a motor vehicle lock, in which a positioning of the coupling element can be ensured.

The above object is achieved by a motor vehicle lock with the features of independent claim 1 and a method having the features of the independent method claim.

Other features, details, advantageous developments and improvements of the invention will become apparent from the dependent claims, the description and the drawings. In this case, the features described in the claims, the description, the drawings and the dependent claims can be combined or varied in any, technologically meaningful manner and show other embodiments of the invention. It should be noted that the embodiments described below are not intended to explain the invention. In this case, features and details that are described in connection with the motor vehicle door lock according to the invention apply, of course, also in connection with the method according to the invention and vice versa, so that with respect to the disclosure of the individual aspects of the invention always reciprocal reference is made may be.

According to the invention, the motor vehicle lock, in particular a motor vehicle lock for a vehicle rear door, a lock cover and a locking mechanism, wherein the locking mechanism substantially comprises a rotary latch and at least one pawl. Further, the motor vehicle lock on at least one coupling element and at least one electric drive, wherein the coupling element can assume different positions and the coupling element interacts with a drive element of the drive and a central locking mechanism, wherein the coupling element is connected to take the positions of the drive element. According to the invention, the drive element and / or the lock cover have a latching contour with at least two position bumps, wherein a spring mechanism is provided and the spring mechanism cooperates with the position bumps of the latching contour such that the coupling element can be positioned in the various positions.

An advantage of the invention is that now that the drive element and / or the lock cover have a latching contour and cooperate with the spring mechanism such that the coupling element can be reliably positioned or fixed in the various positions. The spring mechanism accordingly acts on the latching contour, in particular in the position inlets of the latching contour, by way of a spring force such that the drive element is held in the different position by the spring force of the spring mechanism. Accordingly, a local position determination or positioning can be produced.

In the context of the invention, it is also possible to speak of functional positions in the positions. It is conceivable that a first position is defined by the functional position "Child safety engaged / detachable". In this functional position, the child safety device is inserted, but can be repeated Actuate an interior door actuator to be solved / interpreted. A second position can be defined with the functional setting "Parental control designed". A possible third position can be defined by the functional position "Parental control designed". Alternatively or additionally, functional position "central locking inserted", "central locking designed" and / or "anti-theft device inserted" and "theft protection designed" may be present. If this is referred to as child safety in the following, this can also be used alternatively or additionally in the case of an anti-theft device and / or central locking, so that child protection is used as a synonym for the child safety, anti-theft and central locking functions.

In the context of the invention, a motor vehicle lock in addition to a lock housing also have a lock case and a lock cover, by means of which the lock case can be closed. In the lock case, the locking mechanism is mounted, which is composed of a rotary latch and at least one cooperating pawl. The rotary latch and consequently the thus defined motor vehicle door lock interacts with the locking pin in a known manner.

As usual, the lock housing can be arranged on the body side or hood or door side. In the former case, the lock housing is mounted to a vehicle body, for example by screws. The variant mentioned at a second location corresponds to the fact that the lock housing and with it the door lock are mounted inside or on a door, a cover, a flap or the like.

If, in the context of the invention, a motor vehicle lock is used, then such motor vehicle locksmiths are included, which are used, for example, in side doors, sliding doors, flaps, covers and / or covers, where pivotable or displaceably mounted components are arranged on the motor vehicle. It is also conceivable to arrange the motor vehicle lock in a backrest of a seat. The coupling element according to the invention is preferably rotatably arranged on the drive element of the drive. According to the invention, the drive element can now be designed to be rotatable about an axis, wherein the drive element can be rotated about the axis of rotation into the different position via the drive. Accordingly, the coupling element connected to the drive element is moved to the different positions. The drive element can be controlled mechanically and / or electrically in the different positions, wherein the respective position change takes place either purely mechanically or purely electrically.

Motor vehicle side doors and consequently the associated motor vehicle door locks can, as already mentioned, be converted into different positions or functional positions. In the context of the invention can be spoken, for example, a locked state to the effect that the vehicle side door in question can not be opened from the outside or the application of a corresponding exterior door handle or external operating element regularly remains without function. In this functional state, the motor vehicle side door can be opened unchanged from the inside via an inner door actuating element or inner door handle and thus the inner actuating lever acted upon by it.

By contrast, the position unlocked the motor vehicle lock and consequently also the functional position of the associated motor vehicle door corresponds to the fact that the motor vehicle door can be opened independently by acting on both an outer door operating element and the inner door actuating element.

At the rear side doors of the motor vehicle additionally the position or functional position can be realized child-resistant. In the child-resistant position, an associated inner door operating element is inoperative, so that the relevant motor vehicle side door can not be opened when an occupant is the Internal operating element actuated. In contrast, the outer door handle is still in engagement with the locking mechanism, so that the relevant motor vehicle side door can be opened from the outside.

Another functional position or position can be called theft-proof, wherein in the position theft-proof both the outer door handle and the inner door handle remains in the position without function. In this way, it is ensured that a motor vehicle door does not provide access to the interior of the motor vehicle even when the vehicle window is turned.

So that the motor vehicle lock and thus the drive element can be transferred to the coupling element and the central locking mechanism in the different positions or functional positions, a spring mechanism is provided according to the invention, which cooperates with the position of the recesses contour of the drive element or the lock cover. In this case, one or more spring elements can be provided.

Another advantage of the inventive design is that less space is required and the spring can be designed more simple design. This results from the fact that the spring mechanism interacts directly with the position Einbrechlungen the locking contour and the spring force acts on clear and definable or calculable force vectors on the position indentations of the locking contour. The fact that the spring mechanism cooperates with the position bumps, space can be saved and the spring can be better designed because there is no angular play. The angular clearance is substantially saved or prevented by the configuration of the spring mechanism and the position bumps. The first coupling element according to the invention can be designed, for example, as a coupling lever. On the other hand, a second coupling element may be designed as an outer locking lever.

The spring mechanism according to the invention may be designed primarily as a leg spring, in particular double leg spring. A leg spring allows a cost-effective design of a motor vehicle lock, while at the same time sufficient spring force for the positioning of the drive element and thus of the coupling element can be provided. The leg spring, in particular the double leg spring, makes it possible to exert a direct force transmission on the position indentations of the detent contour. Preferably, the spring mechanism is arranged on the lock housing or the lock case or lock cover and interacts with the position indentations of the locking contour of the drive element or the lock cover. In a double leg spring, the ends of the legs can preferably be mounted in the lock housing, the lock cover or the lock case. Accordingly, the spring can be supported on the one hand at the bearing points and act on the other with a spring force on the locking contour of the drive element or the lock cover.

In the context of the invention, the spring mechanism, in particular the double leg spring, may be arranged on the lock cover, on the coupling element or on the drive element, wherein a winding section of the spring mechanism can be brought into contact at least with the position indentations of the locking contour for fixing the position. Accordingly, the

Windungsabschnitt of the spring mechanism at least one point of contact with the position of the notches of the locking contour. Due to the torsional spring force of the spring of the winding section is always on the locking contour or the

Positional indentations of the locking contour pressed on the drive element. Preferably, the spring is always biased by their bearing points, so that no angular play between the drive element and spring mechanism is present. The leg spring preferably has about one to about 15 turns, preferably between about 5 turns and about 10 turns. Moreover, it may be advantageous that the spring mechanism is a steel spring or a plastic spring.

It is also conceivable that the spring mechanism comprises a compression spring or is formed as a compression spring and is arranged on the drive element, wherein the compression spring at least partially engageable with the position of the latches on the lock cover, whereby the various positions are maintained. Also in this embodiment it is advantageous if the spring mechanism comprises steel and / or plastic. The compression spring thus makes it possible to transmit the force directly to the position bumps of the locking contour of the drive element or the lock cover.

It is particularly preferred if the compression spring is arranged in a spring receptacle on the drive element, wherein in particular a positioning element is provided, which is operatively connected to the compression spring, whereby the positioning element is pressed against the latching contour, in particular the Positionseinbuchtungen. The spring receptacle can be formed, for example, as a bore in the drive element or in the lock cover. The compression spring is thus always biased so that no angular play between the drive element and lock cover is present. In this spring retainer, the compression spring is fixed and / or guided, so that the force of the spring can be transferred to the position of the locking recesses contour. The positioning element may preferably be formed pin-shaped and / or spherical. Advantageously, the positioning element is at least partially arranged and guided in the spring receiver. Accordingly, the positioning element is arranged at one end of the compression spring. The other end of the compression spring is supported against the spring receiving, so that the positioning element contacted with the locking contour.

Advantageously, the drive element can be designed as a worm wheel and have an outer toothed section which engages with the electric drive can be brought. In particular, the external toothed section can be brought into engagement with a screw of the electric drive. Accordingly, the drive element is externally toothed and rotatably mounted on a lock on the lock cover or lock housing. The drive element designed as a worm wheel preferably has a plastic. The outer toothing section and the latching contour, in particular the position inlets, are preferably arranged on the drive element diametrically opposite the outer toothed section. By forming a worm wheel with an external toothing section, further installation space can be saved and a cost-effective motor vehicle lock can be made available. In particular, when the outer toothing portion and the locking contour are diametrically opposite, a compact design can be realized.

It is also conceivable that the outer toothing portion is formed on a first level on the circumferential side of the drive element and the latching contour on an at least second level. This results in the advantage that the angle of rotation can be increased and more positions can be realized. At different levels, it means that several planes or steps can be formed along the axis of rotation of the drive element.

Advantageously, the latching contour may be substantially wave-shaped or substantially V-shaped and each positional recess at least one, preferably two contact surfaces with which the winding portion of the spring mechanism, in particular the double leg spring is brought into contact, in particular, wherein the contact surface is formed substantially straight , In particular, the catch contour and thus the position indentation is concave on the drive element or the lock cover. The concave-shaped curves as position indentations of the latching contour are semicircular, so that essentially a wave geometry is created. The position bumps and the winding portion of the spring mechanism thus have at least two contact points with each other, in which a power transmission from the spring mechanism is made to the locking contour. As a result, the advantage is achieved that the spring structurally simple designed, calculated and thus can be interpreted, therefore definable on the definable contact surfaces and thus contact points of the spring mechanism with the position of bumps, the Flebelarm between spring mechanism and drive element. For this, each position indentations on at least one, preferably two rectilinear contact surfaces, against which abuts the Windungsabschnitt of the spring mechanism. The outer portions of the substantially semicircular Positionseinbuchtungen are thus rectilinear and without any longer arcuate. Accordingly, a combination of undulating and v-shaped configuration of the position bumps results. Looking at the position indentation as substantially U-shaped, the legs are no longer outwardly rounded. Rather, the legs are formed towards the end as a straight line.

It is also conceivable that the spring mechanism, in particular the double leg spring, has at least two attachment ends, each attachment end being arranged in a respective attachment receptacle, in particular in each case a slot. The fastening receptacle is preferably formed in the lock cover or the drive element. The slot thus allows for a deformation of a double leg spring that the attachment ends of the double leg spring can move in the slot. In addition, the fastening of the fastening ends in the fastening receptacles, in particular in the oblong hole, enables a defined transmission of force from the spring mechanism to the latching contour and thus the position bumps. A clearance compensation can be adjusted via the attachment, in particular in at least one slot from a mounting end of the spring mechanism.

Within the scope of the invention, the coupling element can be rotatably mounted on a bearing receptacle on the drive element. In particular, it is conceivable that the bearing receptacle is arranged on the rear side of the latching contour. For example the position recording can be formed as a bore on the drive element or the coupling element, wherein the drive element and the coupling element are connected to each other via a bearing pin or bolt.

According to the invention it may be advantageous if two coupling elements are provided, wherein the first coupling element is connected to the second coupling element by means of a transmission lever with each other. The first or the second coupling element are operatively connected to the central locking mechanism. Accordingly, the central locking mechanism can be transferred to the different functional positions via a lever mechanism. As a result, a movement of the first coupling element to the second. Clutch element can be enabled. The transmission lever is preferably movably mounted on the first coupling element and / or the second coupling element via a ball head. About a Mitnehmerarm can. The transmission lever transmit a movement of the first or second coupling element respectively to the other coupling element. The first coupling element according to the invention can be designed, for example, as a coupling lever. On the other hand, a second coupling element may be designed as an outer locking lever.

According to a further aspect of the invention, a method for actuating a child safety device of a motor vehicle lock, in particular of the motor vehicle lock according to the invention is claimed. The

Motor vehicle lock has a lock cover and a locking mechanism consisting essentially of a catch and at least one pawl. Further comprising at least one coupling element and at least one electric drive, wherein the coupling element can assume different positions and the coupling element interacts with a drive element of the drive (and a central locking mechanism, wherein the coupling element is connected to the drive element for taking its positions the lock cover have a latching contour with at least two position indentations, wherein a spring mechanism is provided, wherein the spring mechanism cooperates with the position indentations of the locking contour, so that the coupling element can be positioned in the positions and the child safety device can be inserted, laid out and / or released.

Further, measures improving the invention will become apparent from the following description of some embodiments of the invention, which are shown schematically in the figures. It should be noted that the figures have only descriptive character and are not intended to limit the invention in any way. Thus, embodiments are also included and disclosed by the invention, which are not explicitly shown or explained in the figures, however, emerge and can be produced by separated combinations of features from the embodiments explained. In the figures, the same reference numerals designate the same or functionally identical components, unless indicated otherwise.

Show it:

FIG. 1A shows a first possible embodiment of a device according to the invention

Motor vehicle lock in position III,

Fig. 1B a section of the motor vehicle lock of the first

Embodiment in position II,

Fig. 1 C a section of the motor vehicle lock of the first

Embodiment in position I,

Fig. 2A shows another possible embodiment of an inventive

Motor vehicle lock in position II,

Fig. 2B shows another possible embodiment of an inventive

Motor vehicle lock in position III, Fig. 3 shows another possible embodiment of an inventive

Motor vehicle lock in position I and

4 shows a motor vehicle with a motor vehicle lock according to the invention.

Figure 1 A shows a first possible embodiment of a motor vehicle lock 10 according to the invention comprising a lock cover 1 1 and a locking mechanism with a rotary latch 12 and a pawl 13. In addition, the motor vehicle lock on a coupling element 17 and another coupling element 18, wherein the coupling element 17 at a drive element 14 is mounted. The second coupling element 18 is connected to a central locking mechanism 40. The first coupling element 17 and the second coupling element 18 are operatively connected to one another via a transmission lever 30. The drive element 14 can be transferred via the electric drive, 15,16 in the different positions / functional positions. The first coupling element 17 according to the invention may be designed as a coupling lever. The second coupling element 18, however, is designed as an external locking lever.

In Figure 1 A, the motor vehicle lock in position III and thus the

Functional position "Child safety engaged / detachable" shown.

The drive element 14 in this case has a latching contour 19 with a total of three

Position bumps 19.1, 19.2 and 19.3 on. The locking contour 19 with the

Positionseinbruchlungen 19.1, 19.2 and 19. 3 cooperate with the spring mechanism 20 such that the drive element 14 and thus the connected

Coupling 17.18 is fixed in the position 3. The spring mechanism 20 is formed in Figure 1 A as a double leg spring, wherein the

Double leg spring 20 has a winding portion 21, and the

Windungsabschnitt 21 cooperates with the position bumps 19.3. For this, the winding section 21 of the spring mechanism 20 contacts the Position indent 19.3 at two contact points. The drive element 14 is in this case designed as a worm wheel and has a

External toothing section 14.1 on.

The spring mechanism 20 in the form of the double leg spring 20 has two attachment ends 20.1 and 20.2, wherein the attachment ends 20.1 and 20.2 of the double leg spring 20 are each secured in a slot 26 on the lock cover of the motor vehicle lock 10.

The electric drive, 15,16 consists of a motor 16 and a worm 15, wherein the worm 15 with the external teeth section 14.1 of the

Drive element 14 is engaged, so that via the motor 16 a force from the worm 15 can be transmitted to the drive member 14 so that the drive member 14 is rotatable about an axis. Accordingly, that can

Drive element 14 in the different positions and thus

Functional positions can be brought. Overall, the drive element 14 in Figure 1 A three position indentations 19.1, 19.2 and 19.3. These

Position bumps can according to the invention, the positions

"Parental control inserted", "Parental control designed" and / or "Parental control engaged / released".

In Figure 1 A, the drive element 14 is shown in the position III, wherein the position III of the functional position "Child safety engaged / solvable" corresponds. In this position, it is possible by means of multiple actuation of the inner actuating element from the motor vehicle interior to interpret the child safety. Will that be

Drive element 14 now via the drive, 15,16 in the different positions method, so moves the coupling element 17 and the

Coupling element 18 according to the change of position. Thus, via the drive 14, 15, 16, the motor vehicle lock preferably be electrically transferred to the 3 functional positions. In FIG. 1B, a section of the motor vehicle lock 10 is shown, the section showing, in particular, the drive 14, 15, 16. In this case, this drive 14, 15, 16 comprises the motor 16, the worm 15 and the drive element 14. In the position II shown in FIG. 1B, the functional position "childproof lock designed" is achieved. In this case, the winding section 21 of the double leg spring 20 is arranged in the position indentation 19. In this case, the winding section 21 of the spring mechanism 20 has two contact points with the position indentation 19. 2. The contact points are located on the contact surfaces 24 and 25. Die

Contact surfaces are formed in a straight line. Looking at the

Positionsseinbuchtungl 9.1, 19.2 or 19.3 as a substantially U-shaped, so the legs are no longer outward rounding. Rather, the legs are towards the end and thus in the area of the contact surfaces 24, 25 formed as a straight line.

The design of the drive element 14, the worm 15 and the motor 16 corresponds to those of Figure 1 A.

The double leg spring 20 is likewise mounted in each case in an elongated hole 26, each having a fastening end 20.1, 20.2 of the double leg spring 20 in FIG. The coupling element 17 is indicated in Figure 1 B only and is as shown in Figure 1 A, on which the locking contour opposite / remote side. The clutch lever 17 is rotatably mounted on the bearing receptacle 14.2.

The position shown II and thus the functional position "Parental control designed" is achieved in that the motor 16, the worm 15 drives and the worm 15 transmits the force to the external gear section 14.1 of the drive member 14, so that the drive element 14 counterclockwise order the axis 1 1.1 is rotated. In this case, the winding section 21 of the contacted

Spring mechanism 20, the locking contour and snaps into the position indentations 19.1, 19.2 or 19.3. In the position indentation 19.2 shown in FIG. 1B, the spring mechanism 20 in the form of a double leg spring in the region of the winding section 21 again has two contact points with the contact surfaces 24, 25 of the catch contour 19 or the position indentations. Here, the locking contour 19 in Region of the position indentations 19.1, 19.2, 19.3 at the contact surfaces 24, 25 formed at least partially rectilinear.

The figure 1 C shows the embodiment of Figures 1 A and 1 B, wherein the drive element 14 and thus the coupling element 17 in the position I and thus the functional position "Child safety engaged" is. The further features of the components shown correspond to those of Figures 1 A and 1 B.

Accordingly, reference is made at this point to an exact embodiment of Figures 1 A and 1 B.

FIG. 2A shows a further possible embodiment of a motor vehicle lock according to the invention, in particular a further embodiment of a drive element 14 according to the invention and a latching contour 19

Spring mechanism 20 is designed as a compression spring and arranged on a drive element 14, wherein the compression spring at least partially with the

Position Einbuchtungen 19.1, 19.2 or 19.3, which are arranged on a lock cover 1 1, can be brought into contact, whereby the various positions I, II and III can be maintained. The compression spring is arranged in a spring seat 22 on the drive element 14. Furthermore, the spring mechanism 20 has a positioning element 23 at one end of the spring element, wherein the positioning element is operatively connected to the compression spring, that the positioning element 23 is pressed against the locking contour 19 in the position indentations 19.1, 19.2 or 19.3.

Accordingly, a further embodiment is formed, wherein a precise positioning of the drive element 14 and thus of the coupling elements 17, 18 is made possible. The compression spring 20 is guided in such a way in the spring seat 22 that a force transmission to the locking contour 19 and thus the

Position bumps 19.1, 19.2 and 19.3 is possible. The drive element 14 is rotatably arranged on a at a rotation axis 1 1.1 on the lock cover 1 1. Der Antriebselement 14 ist mit dem Schloßdeckel 1 1 verbunden. Also in the embodiment of FIG. 2A, the drive element 14 has an external gear section 14.1 which engages with the screw 15, so that a force from the motor 16 via the worm 15 to the drive member 14 via the external gear portion 14.1 is transferable. FIG. 2A shows the drive element 14 and thus the coupling element 17, which is arranged rotatably on the position of the receptacle 14.2 of the drive element 14.

FIG. 2B shows a further possible embodiment of the motor vehicle lock according to the invention, wherein the embodiment of FIG. 2B has a

Spring mechanism 20 having a compression spring, a spring retainer 22 and a positioning member 23 has. The spring mechanism 20 is arranged in the drive element 14, wherein now the compression spring and the

Positioning element 23 on a locking contour 19 on the axis of rotation 1 1.1 of the lock cover 11 effect. The rotation axis 1 1.1 thus has a latching contour 19 with the position recording 19.1, 19.2 and 19.3. In FIG. 2B, the positioning element 23 of the spring mechanism 20 is in position III.

Also in Figure 2B, the clutch lever 17 is rotatably mounted on a position receiving 14.2 of the drive element. In addition, also in Figure 2B, the drive member 14 has an outer toothing section 14.1, which is engageable with a worm 15, so that on the motor 16, a force on the worm 15 and thus on the drive member 14 by means of

External gear portion 14.1 is transferable. Thus, the drive element 14 can be transferred to the different positions I, II and III and thus in the different functional positions.

FIG. 3 shows a further possible embodiment of a motor vehicle lock according to the invention, wherein a spring mechanism 20 is arranged on the drive element 14. The spring mechanism 20 is designed as a double leg spring and has a fastening end 20. 1 and a second fastening end 20. 2, which are arranged in the fastening receptacles 26 on the drive element 14. The double leg spring 20 in this case has a winding section 21 which is provided with a latching contour 19 of the axis of rotation 11.1 of the lock cover 11 is trained. The catch contour has the position bumps 19.1, 19.2 and 19.3.

In FIG. 3, the winding section 21 of the spring mechanism 20 is arranged in the position indentation 19.1 and at at least two contact points in operative connection with the position indentation 19.1, so that the position I and thus the functional position parental control is engaged but deflectably arranged.

Also in Figure 3, the coupling element 17 is rotatably mounted on the drive element 14 to a bearing receptacle 14.2. Also in FIG. 3, the drive element has an outer toothed section 14. 1, which can be operatively connected to a worm 15, so that the motor 16, the worm 15, drive and

Drive element 14 in the positions I, II or III can convict.

FIG. 4 shows a motor vehicle 100 with a device according to the invention

Motor vehicle lock 10 on a movable part 1 10 of the motor vehicle 100. The movable part 110 is shown in Figure 4 as a back door of the motor vehicle 100, so that the motor vehicle lock 10 as a motor vehicle lock a

Vehicle rear door is formed.

LIST OF REFERENCE NUMBERS

10 motor vehicle lock

1 1 lock cover

1 1.1 Rotary axis

12 rotary latch

13 pawl

14 drive element

14.1 external gear section

14.2 bearing support

15 snail

16 engine

17 coupling element

18 coupling element

19 locking contour

19.1 first position dent

19.2 second position dent

19.3 third position dent

20 spring mechanism

20.1 first attachment end

20.2 second attachment end

21 winding section Spring receiver positioning element

contact surface

Mounting bracket, slot transmission lever

Central locking mechanism vehicle

Backdoor first position

second position

third position

Claims

claims

1. motor vehicle lock (10), in particular for a vehicle rear door (1 10), with a lock cover (1 1) and a locking mechanism (12, 13) of substantially rotary latch (12) and at least one pawl (13), further comprising at least one Coupling element (17, 18), and with at least one electric drive (14, 15, 16), wherein the coupling element (17, 18) can assume different positions (I, II, III) and the coupling element (17, 18) with a Drive element (14) of the drive (14, 15, 16) and a

Central locking mechanism (40) interacts, the

Coupling element (17, 18) for capturing its positions (I, II, III) to the drive element (14) is connected, characterized in that the drive element (14) and / or the lock cover (1 1) has a latching contour (19) at least two position indentations (19.1, 19.2, 19.3) and a spring mechanism (20) is provided, wherein the

Spring mechanism (20) with the position indentations (19.1, 19.2, 19.3) of the locking contour (19) cooperates, whereby the coupling element (17, 18) in the positions (I, II, III) can be positioned.

2. motor vehicle lock (10) according to the preceding claim,

characterized in that

the spring mechanism (20) as a leg spring, in particular

Double leg spring, is formed.

3. motor vehicle lock (10) according to the preceding claim,

characterized in that

the spring mechanism (20) on the lock cover (1 1) or on the

Coupling element (17, 18) or on the drive element (14) is arranged, wherein a winding portion (21) of the spring mechanism (20) at least with the position indentations (19.1, 19.2, 19.3) of the latching contour (19) for positional fixing in contact can be brought.

4. Motor vehicle lock (10) according to one of the preceding claims, characterized in that

the spring mechanism (20) designed as a compression spring and on the

Drive element (14) is arranged, wherein the compression spring at least in sections with the Positionseinbuchtungen (19.1, 19.2, 19.3) on the lock cover (1 1) is brought into contact, whereby the different positions (I, II, III) are held.

5. Motor vehicle lock (10) according to one of the preceding claims,

characterized in that

the compression spring is arranged in a spring receptacle (22) on the drive element (14), wherein in particular a positioning element (23) is provided, which is operatively connected to the compression spring, whereby the positioning element (23) is pressed against the latching contour (19).

6. Motor vehicle lock (10) according to one of the preceding claims,

characterized in that

the drive element (14) is designed as a worm wheel and a

External toothing portion (14.1), which is engageable with the electric drive (15, 16).

7. motor vehicle lock (10) according to the preceding claim,

characterized in that

the external toothing section (14.1) on a first plane (A)

on the circumferential side of the drive element (14) and the latching contour (19) on an at least second plane (B) is formed.

8. Motor vehicle lock (10) according to one of the preceding claims,

characterized in that

the catch contour (19) is substantially wave-shaped or substantially V-shaped and each position bumps (19.1, 19.2, 19.3) has at least one, preferably two, contact surface (24, 25) with which the winding section (21) can be brought into contact, in particular wherein the contact surface (24, 25) is rectilinear.

9. Motor vehicle lock (10) according to one of the preceding claims,

characterized in that

the spring mechanism (20) has at least two attachment ends (20.1, 20.2), wherein each attachment end (20.1, 20.2) in each case one

Attachment (26), in particular in each case a slot (26) are arranged.

10. Motor vehicle lock (10) according to one of the preceding claims,

characterized in that

the coupling element (16) is rotatably mounted on a bearing receptacle (14.2) on the drive element (14).

1 1. Motor vehicle lock (10) according to one of the preceding claims,

characterized in that

the two coupling elements (16, 17) are provided, wherein the first coupling element (16) with the second coupling element (17) by means of a transmission lever (30) is operatively connected to each other.

12. A method for actuating a child safety device in a motor vehicle lock (10) with a lock cover (11) and a locking mechanism (12, 13) from in

Substantial rotary latch (12) and at least one pawl (13), further comprising at least one coupling element (17, 18), and at least one electric drive (14, 15, 16), wherein the coupling element (17, 18) different positions (I , II, III) and the coupling element (17, 18) interacts with a drive element (14) of the drive (14, 15, 16) and a central locking mechanism (40), wherein the

Coupling element (17, 18) for taking its positions (I, II, III) to the drive element (14) is connected, characterized in that the drive element (14) and / or the lock cover (1 1) has a latching contour (19) with at least two position inlets (19.1, 19.2, 19.3) and a spring mechanism (20) is provided, wherein the

Spring mechanism (20) with the position indentations (19.1, 19.2, 19.3) of the locking contour (19) cooperates, so that the coupling element (17, 18) in the positions (I, II, III) positionable and the child safety insertable, interpretable and / or detachable is.