DE102008012563A1 - Drive for adjustable functional element in motor vehicle, has magnet arrangement and coil arrangement, where driving power or driving moment is generated between magnet arrangement and coil arrangement by activating coil arrangement - Google Patents

Abstract

The drive has a magnet arrangement (2) and a coil arrangement (3). A driving power or a driving moment is generated between the magnet arrangement and the coil arrangement by activating the coil arrangement. A functional element (1), corresponding to a counter bearing (4), includes the magnet arrangement or the coil arrangement, where the drive operates as a type of gearless drive. An independent claim is also included for a vehicle lock.

Description

The The invention relates to a drive for an adjustable Functional element in a motor vehicle according to the The preamble of claim 1 and a motor vehicle lock according to the The preamble of claim 24.

Of the drive in question is for numerous functional elements applicable in a motor vehicle. Such functional elements are Components of electric seat adjusters, electric windows, electric motor vehicle locks o. The like. Present is the application of the drive for an adjustable Functional element of a motor vehicle lock in the foreground. This but is not meant to be limiting.

The well-known drive ( DE 10 2005 049 304 A1 ), from which the invention proceeds, is associated with the lock mechanism of a motor vehicle lock, in detail the central locking of the motor vehicle lock. The drive is equipped with a drive motor, which is coupled via a worm gear with a central locking lever drive technology.

Of the Drive motor is in the usual way as a DC motor equipped with a magnet arrangement and with a coil arrangement. By a corresponding control of the coil arrangement is a Driving force or a driving torque between the magnet assembly and the coil assembly, ie here between the stator and the rotor produced. The movement of the rotor relative to the stator is over transfer the worm gear to the functional element.

adversely in the known drive is the low compactness and the fact that its installation is relatively expensive. By the use of the worm gear is also undesirable Noise and to wear. Another disadvantage consists in the high susceptibility to interference by the mechanical coupling via the gearbox.

Of the Invention is based on the problem, the known drive such to design and refine that the above Disadvantages can be eliminated with little effort.

The above problem is in a drive according to the The preamble of claim 1 by the features of the characterizing one Part of claim 1 solved.

Essential First of all is the realization that all the above described Disadvantages of the prior art can be eliminated by that the drive for the functional element after Type of direct drive works. This means that the Electromagnetically generated driving force or the electromagnetic generated drive torque directly between the to be adjusted Functional element and an abutment acts, without interposition a gearbox. For this purpose, it is provided that the Functional element, the magnet assembly and the anvil carries the coil assembly. It can also be provided the other way round that the functional element the coil assembly and the anvil carries the magnet assembly.

at the magnet arrangement is preferably a permanent magnet arrangement which Equipped with at least one permanent magnet is. However, the magnet arrangement may also be an electromagnet arrangement act, which has at least one coil.

at the preferred embodiment according to claim 3 is the direct-drive functional element o motor vehicle lock o. Like assigned. This is advantageous because it is completely in motor vehicle locks especially on a high compactness, a low noise and a high level of operational reliability arrives.

The further preferred embodiments according to claim 6 or 7 are associated with a particularly good crash behavior. In the embodiment according to claim 7 it is For example, so that the resulting in the event of a crash, high Linear accelerations no or little effect on the Have positions of the functional element.

at the further preferred embodiments according to the Claims 9 to 12 are each in an alternative so that the preferred direction of the permanent magnet or the preferred directions of the permanent magnet and / or the coil axis the coil or the coil axes of the coils substantially parallel or is oriented perpendicular to the functional element axis or are. Overall, this leads to a particularly compact arrangement.

The Claims 20 to 23 further relate to preferred embodiments, in which a baffle arrangement is provided by means of the guided by the magnet assembly generated magnetic flux becomes. This can be undesirable stray fields in considerable Reduce dimensions.

A further teaching, which has independent significance a motor vehicle lock according to claim 24th

It is essential for this further teaching, that the motor vehicle lock is equipped with a functional element such as a central locking lever o. The like., Which is adjustable by means of the proposed drive, described above. Reference may be made to the full extent to the designs relating to the proposed drive.

in the The following is the invention with reference to a merely exemplary embodiments illustrative drawing explained in more detail. In the Drawing shows:

1 1 is a schematic illustration of a drive according to the invention a) when the functional element is in a first position and b) when the functional element is in a second position,

2 in a schematic representation of a drive according to the invention in a further embodiment a) with a functional element in a first position and b) with a functional element in a second position,

3 in a schematic representation of the drive according to 1 in a sectional view, which is a view along the section line III-III in 1a ),

4 in a schematic representation of a drive according to the invention in a further embodiment in a view according to 3 and

5 a schematic representation of a drive according to the invention in a further embodiment a) in standing in a first end position functional element, b) standing in a central position functional element and c) standing in a second end position functional element.

The drawing shows in the 1 to 5 in each case only the components of the drive, which are essential for the explanation of the invention. In that regard, the presentation is simplified.

All figures show a drive for an adjustable functional element 1 in a motor vehicle, the drive being a magnet assembly 2 and a coil assembly 3 and wherein by a control of the coil arrangement 3 a driving force or a driving torque between the magnet arrangement 2 and the coil assembly 3 can be generated. By "driving" is meant in this case that the coil arrangement 3 with a current and / or a voltage is applied.

The arrangement is such that by the driving force or by the drive torque, the functional element 1 opposite a counter bearing 4 is adjustable by motor. Ultimately, it is basically a structure in the manner of an electric motor, depending on the control of the coil assembly 3 an arrangement, for example, in the manner of a synchronous motor or a DC motor.

It is essential in all embodiments, the fact that the drive operates in the manner of a direct drive. For this purpose, it is provided that the functional element 1 the magnet arrangement 2 or the coil assembly 3 carries and that accordingly the counter bearing 4 the coil arrangement 3 or the magnet arrangement 2 wearing. Any kind of translation of the driving force or the drive torque by an intermediate gear o. The like. Is not required at this point.

The counter bearing 4 can be arranged basically fixed. For example, the counter bearing 4 Part of a housing o. The like. Be. It is also conceivable that the counter bearing 4 is designed as a further adjustable functional element, so that the driving force or the drive torque causes a relative movement between two functional elements.

Here and preferably, it is such that the functional element 1 around a functional element axis 5 is pivotable or rotatable. In certain applications, it may also be advantageous to the functional element 1 to design linearly displaceable.

In view of the high demands in terms of compactness and reliability of motor vehicle locks, it is preferably provided that the functional element 1 a motor vehicle lock o. The like. Is assigned. Such a motor vehicle lock was addressed in the introductory part of the description. The motor vehicle lock preferably has the locking elements latch and pawl and a lock mechanism. The functional element 1 is more preferably associated with the lock mechanism, in particular it is in the functional element 1 around a lever of the lock mechanism. For this purpose, for example, the central locking lever, the anti-theft lever o. The like. The lock mechanism in question.

The field of a motor vehicle lock offers numerous other applications for the proposed drive. For example, it may be provided that the functional element 1 an actuator of the motor vehicle lock associated opening aid or closing aid.

It has already been noted that for the counter bearing 4 There are a number of implementation options. Preferably, the abutment is part of the housing or the striking plate of the motor vehicle lock o. The like.

In a particularly preferred embodiment, it is such that the magnet arrangement 2 and / or the coil assembly 3 on the functional element axis 5 is aligned or are. Alternatively or additionally, it is then preferably such that the magnet arrangement 2 and / or the coil assembly 3 with respect to the radio tion element axis 5 is configured symmetrically or are. Here and preferably, the alignment was on the functional element axis 5 as well as the symmetrical design with regard to the functional element axis 5 both for the magnet arrangement 2 as well as for the coil arrangement 3 performed.

In particular, with the symmetrical configuration described above can be achieved that the center of gravity of the magnet assembly 2 and / or the coil assembly 3 in the functional element axis 5 lies. This is particularly advantageous in the event of a crash, since occurring there linear accelerations no torque on the magnet assembly 2 and / or the coil assembly 3 cause.

The magnet arrangement 2 and the coil assembly 3 are preferably arranged to one another such that at least a part of the coil arrangement 3 in the of the magnet assembly 2 generated magnetic field is located.

The magnet arrangement 2 is more preferably with at least one permanent magnet 2a equipped with a preferred direction. The preferred direction of the permanent magnet 2a is advantageously substantially parallel to the functional element axis 5 aligned. In principle, the preferred direction of the permanent magnet 2a but also essentially perpendicular to the functional element axis 5 be aligned.

In the illustrated and so far preferred embodiments, the magnet arrangement 2 multi-pole, in particular four-pole, designed. Accordingly, at least two, in particular four, permanent magnets 2a provided, which further preferably around the functional element axis 5 are arranged around.

For the design of the permanent magnets 2a are different variants conceivable. Particularly advantageous is the configuration of the permanent magnets 2a each proved as a ring section, preferably a continuous ring.

The around the functional element axis 5 arranged around permanent magnets 2a are so "poled" that juxtaposed permanent magnets 2a each have opposite preferred directions. This can be nentmagneten of a Perma 2a starting from the adjacent permanent magnet 2a generate an alternating magnetic field.

The coil arrangement 3 is with at least one coil 3a equipped with a coil axis, wherein the coil axis of the coil 3a preferably substantially parallel to the functional element axis 5 is aligned. An orientation of the coil axis of the coil 3a essentially perpendicular to the functional element axis 5 but in principle is also conceivable. Here and preferably, it is such that the coil arrangement 3 a first coil 3a and a second coil 3a whose coil axes are substantially parallel to the functional element axis 5 are aligned.

For the design of the coil 3a or the coils 3a a number of variants are conceivable. Preferably, the respective coil 3a seen in the direction of the respective coil axis configured substantially circular. This is in 1 shown.

Basically, from the circular configuration of the coil 3a but also deviated. For example, it may be provided that the respective coil 3a has a constriction, preferably on the functional element axis 5 is aligned. Such an embodiment shows 2 , The advantage associated with such a constriction will be explained below.

The generation of the driving force or of the drive torque in the present case is based on the known Lorentz force. In the illustrated arrangement with permanent magnets 2a around the functional element axis 5 are arranged around and their preferred directions each parallel to the functional element axis 5 are aligned, is a flow of current in terms of the functional element axis 5 Radial direction necessary to a driving force with respect to the functional element axis 5 to generate in a tangential direction. The current vector 6 , the river density vector 7 and the resulting drive force vector 8th are in 1b ) exemplified.

It can be the representation in 1a ) that the four-pole configuration of the magnet assembly 2 in combination with the coil arrangement 3 with the two coils 3a This causes the effects of the two coils 3a add with appropriate control. The resulting drive force or the resulting drive torque is correspondingly high.

It has been explained that in the present case only those with respect to the functional element axis 5 radially extending conductor sections of the coils 3a to a driving force or to a drive torque to lead. For this purpose, not necessarily several coils 3a necessary, as in 2 is shown. 2 shows a coil 3a with the already explained above constriction, which leads to the corresponding radial sections 9 be generated in the appropriate place. Basically, the coil 3a the coil arrangement 3 also be configured substantially star-shaped to produce corresponding radial sections. Here is a vote of the geometry of the coil assembly 3 on the geometry of the magnet assembly 2 necessary.

In the illustrated and insofar preferred embodiments, the functional element 1 adjustable by means of the drive between two positions. In principle, it is also conceivable that the functional element 1 is adjustable by means of the drive between several positions. In other applications, such as the motorized lifting the pawl of the motor vehicle lock, it may be sufficient that the functional element 1 is adjustable by means of the drive only in one position, wherein the "return path" preferably by a spring o. The like. Is taken over. In all variants, it may be advantageous that the functional element 1 coupled with a tilt spring, not shown, and thereby fixed in the desired, stable positions. Here also other types of spring can be used. An example of this are locking springs with corresponding locking elements o. The like.

A drive with which the functional element 1 in a total of three positions can be brought, shows in 5 illustrated embodiment. The functional element 1 can be in a first end position ( 5a ), in a second end position ( 5c ) and into an intermediate position ( 5b ) bring.

The magnet arrangement 2 is designed as a four-pole permanent magnet arrangement, wherein the permanent magnets 2a in pairs and with regard to the functional element axis 5 opposite to the functional element 1 are arranged.

The coil arrangement 3 has two coils 3a on, with each coil 3a a pair of magnets 2a assigned.

The functioning of the in 5 shown drive is explained below:
Starting from the in 5a ) shown position of the functional element 1 become the coils 3a energized as shown. Both legs cause this 9 the in 5 upper coil 3a as well as the right thigh 9 the lower coil 3a together with the magnet arrangement 2 an adjustment of the functional element 1 in the direction of in 5b ) middle position. When reaching the middle position, both legs come 9 the lower coil 3a so in the sphere of action of the associated magnet pair 2a in that the further adjustment of the functional element 1 is braked in the direction of the center position. In this position, the upper coil works 3a against the lower coil 3a , so that sets a state of equilibrium with a suitable design.

To go back to the in 5a ), only the upper coil becomes 3a energized, but with reversed polarity.

To start from the in 5b ) shown in the in 5c To reach the end position shown, only the lower coil is energized, again with reverse polarity.

To start from the in 5c ) end position shown in the 5b ), both coils are again as in 5a ) shown energized. This time comes when reaching the middle position, the upper coil 3a so in the sphere of action of the upper magnet pair that now of this coil 3a so a braking effect emanates. It turns back into the 5b ) shown an equilibrium state.

In certain applications, a large range of motion or a high driving force or a high drive torque is required. Then it is advantageous if the magnet arrangement 2 and the coil assembly 3 form an arrangement in the manner of a DC motor, wherein preferably the stature of the DC motor, the coil assembly 3 and the rotor of the DC motor according to the magnet arrangement 2 is. Then, further preferably, a commutator for reversing the coil arrangement 3 intended. The commutator is preferably equipped in a conventional manner with a brush and slip ring, wherein the functional element 1 preferably carries the brush. The functional element 1 but vice versa but also wear the slip ring. For example, the commutation can also be done electronically.

Depending on the structural boundary conditions are different variants for the attachment of the magnet assembly 2 on the one hand and the coil arrangement 3 on the other hand conceivable.

Preferably, the magnet arrangement 2 (or the coil assembly 3 ) on the functional element 1 clipped on, to the functional element 1 glued or in the functional element 1 admitted.

The same applies to the attachment of the coil assembly 3 (or the magnet assembly 2 ) at the counter bearing 4 ,

In principle, it is conceivable that the coil arrangement 3 and / or the magnet arrangement 2 completely into the counter bearing 4 or in the functional element 1 let in, preferably poured, is or are, so that a seal against moisture is realized in a simple manner. The entire coil arrangement 3 could include the supply lines in one the counter bearing 4 forming housing o. The like. Be arranged. Problems with leakage currents o. The like. Can be completely avoided.

Also, the above-mentioned commutator with slip ring and brushes can also be largely in the functional element 1 or in the counter bearing 4 be poured.

In this context, it is particularly advantageous if the coil arrangement 3 realized by a flexible conductor foil. This conductor foil can readily be arranged, for example, by pouring within a housing wall or the like.

In order to avoid stray magnetic fields and associated losses, a baffle arrangement is provided in a particularly preferred embodiment, the guide of the of the magnet assembly 2 generated magnetic field serves.

The The above baffle arrangement may vary depending on the structural conditions Made of specially designed, magnetically conductive sheets be realized. It is particularly advantageous if already existing magnetically conductive components for the baffle arrangement be used. In a particularly preferred embodiment, it is that the strike plate of the motor vehicle lock is a part of the baffle arrangement.

Such a baffle arrangement shows in 3 illustrated drive, the in 1 represented drive corresponds. The baffle arrangement is composed here of the functional element 1 to which the functional element 1 bearing bearing pin 11 and the base plate 10 , which may possibly be the strike plate of a motor vehicle lock together. The base plate forms here simultaneously the counter bearing 4 , To illustrate the effect of the baffle arrangement is the magnetic flux 12 shown as a solid line.

A particularly preferred embodiment of the baffle arrangement shows in 4 illustrated, another embodiment with a coil assembly 3 that only has a single coil 3a having. This coil 3a can be shaped like the ones in 2 shown coil.

The baffle arrangement continues at the in 4 shown drive from the functional element 1 and the base plate 10 , which may again be the strike plate of a motor vehicle lock, together. The magnetic flux 12 is again shown here as a solid line. It stands out that the functional element 1 at least in part substantially pot-shaped and that the magnet arrangement 2 in the cup-shaped part of the functional element 1 is arranged. Furthermore, it is the case that the coil arrangement 3 largely within the cup-shaped part of the functional element 1 is arranged. Thus, the entire drive magnetically and electrically shielded from the arrangement in the other, so that correspondingly disturbing magnetic and electrical interactions are eliminated.

According to another teaching, the independent significance, a motor vehicle lock with the closing elements lock latch and pawl and a lock mechanism is claimed. The motor vehicle lock is equipped with an adjustable functional element 1 , in particular with a central locking lever o. The like. Equipped. Furthermore, a drive is provided, which in the above sense is a magnet arrangement 2 and a coil assembly 3 having. By driving the coil assembly 3 can be a driving force or a driving torque between the magnet assembly 2 and the coil assembly 3 generate, wherein the arrangement is made again so that by the driving force or by the drive torque, the functional element 1 opposite a counter bearing 4 is adjustable by motor. At the counter bearing 4 this may be the housing, the strike plate o. The like. The motor vehicle lock.

It is essential that the drive works as described above in the manner of a direct drive and that this is the functional element 1 the magnet arrangement 2 or the coil assembly 3 carries and accordingly the counter bearing 4 the coil arrangement 3 or the magnet arrangement 2 wearing. Ultimately, this further teaching relates to a motor vehicle lock, which is equipped with a drive described above. All versions of the proposed drive apply to the full extent for the motor vehicle lock accordingly.

It Finally, it should be pointed out that the described applications for the proposed Drive are not restrictive to understand. For example can the proposed drive also in the frame used by safety-related components in which it depends on a high reliability. Examples of this are the trigger mechanism for a roll bar or the triggering mechanism for a so-called passive pedestrian protection, in the event of a crash the bonnet is raised. Other application examples are conceivable.

In the case of the embodiment of the function lements 1 as a central locking lever, this can be in the positions central locking-A and central locking-off, possibly also in the position anti-theft-A-adjust. This information is only an example.

QUOTES INCLUDE IN THE DESCRIPTION

This list The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.

Cited patent literature

• DE 102005049304 A1 [0003]

Claims (25)

Drive for an adjustable functional element ( 1 ) in a motor vehicle, wherein the drive is a magnet arrangement ( 2 ) and a coil arrangement ( 3 ) and wherein by a control of the coil arrangement ( 3 ) a driving force or a driving torque between the magnet arrangement ( 2 ) and the coil arrangement ( 3 ) is produced and wherein the arrangement is made such that by the driving force or by the drive torque, the functional element ( 1 ) against an abutment ( 4 ) is motor-adjustable, characterized in that the functional element ( 1 ) the magnet arrangement ( 2 ) or the coil arrangement ( 3 ) and according to the counter bearing ( 4 ) the coil arrangement ( 3 ) or the magnet arrangement ( 2 ) and that the drive thus operates in the manner of a direct drive. Drive according to claim 1, characterized in that the functional element ( 1 ) around a functional element axis ( 5 ) is pivotable or rotatable. Drive according to claim 1 or 2, characterized in that the functional element ( 1 ) is assigned to a motor vehicle lock o. The like., Preferably, that the motor vehicle lock has the closing elements latch and pawl and a lock mechanism, further preferably that the functional element ( 1 ) is associated with the lock mechanism, more preferably that the functional element ( 1 ) a lever of the lock mechanism, in particular the central locking lever, the anti-theft lever o. The like. The lock mechanism is. Drive according to claim 3, characterized in that the functional element ( 1 ) is an actuator of the motor vehicle lock associated with opening aid or closing aid. Drive according to claim 3 and optionally according to claim 4, characterized in that the abutment ( 4 ) Part of the housing or the striking plate of the motor vehicle lock o. The like. Is. Drive according to one of the preceding claims, characterized in that the magnet arrangement ( 2 ) and / or the coil arrangement ( 3 ) on the functional element axis ( 5 ), and / or that the magnet arrangement ( 2 ) and / or the coil arrangement ( 3 ) with regard to the functional element axis ( 5 ) is configured symmetrically or are. Drive according to one of the preceding claims, characterized in that the center of mass of the magnet arrangement ( 2 ) and / or the coil arrangement ( 3 ) in the functional element axis ( 5 ) lies. Drive according to one of the preceding claims, characterized in that the magnet arrangement ( 2 ) and the coil arrangement ( 3 ) are arranged to each other such that at least a part of the coil arrangement ( 3 ) in which of the magnet assembly ( 2 ) generated magnetic field is located. Drive according to one of the preceding claims, characterized in that the magnet arrangement ( 2 ) at least one permanent magnet ( 2a ) with a preferred direction, preferably, that the preferred direction of the permanent magnet ( 2a ) substantially parallel to the functional element axis ( 5 ), or that the preferred direction of the permanent magnet ( 2a ) substantially perpendicular to the functional element axis ( 5 ) is aligned. Drive according to one of the preceding claims, characterized in that the magnet arrangement ( 2 ) multipolar, preferably four-pole, is configured and according to at least two, preferably four, permanent magnets ( 2a ), preferably around the functional element axis ( 5 ) are arranged around, preferably that the permanent magnets ( 2a ) are each configured as a ring portion, preferably a continuous ring. Drive according to claim 10, characterized in that two permanent magnets arranged next to each other ( 2a ) each have opposite preferred directions. Drive according to one of the preceding claims, characterized in that the coil arrangement ( 3 ) at least one coil ( 3a ) with a coil axis and that the coil axis of the coil ( 3a ) substantially paral lel to the functional element axis ( 5 ), or that the coil axis of the coil ( 3a ) substantially perpendicular to the functional element axis ( 5 ) is aligned. Drive according to one of the preceding claims, characterized in that the coil ( 3a ) or the coils ( 3a ) is in the direction of the respective coil axis is designed in each case substantially circular or, or that the coil ( 3a ) or the coils ( 3a ) in the direction of the respective coil axis has or have respectively a constriction, which preferably acts on the functional element axis ( 5 ) is aligned. Drive according to one of the preceding claims, characterized in that the functional element ( 1 ) is adjustable by means of the drive between at least two positions, preferably, that the functional element ( 1 ) is coupled with a tilt spring and thereby in at least two stable Positions can be brought. Drive according to one of the preceding claims, characterized in that the functional element ( 1 ) can be brought by means of the drive in two end positions and in an intermediate middle position and that the arrangement is made such that during the motorized adjustment of the functional element ( 1 ) starting from one of the end positions in the middle position when reaching the middle position, a part of the coil arrangement ( 3 ) in the magnetic field of a part of the magnet arrangement ( 2 ) and thereby the further adjustment of the functional element ( 1 ) brakes. Drive according to one of the preceding claims, characterized in that the magnet arrangement ( 2 ) and the coil arrangement ( 3 ) form an arrangement in the manner of a DC motor and, preferably, that the stator of the DC motor, the magnet assembly ( 2 ) or the coil arrangement ( 3 ) and that the rotor of the DC motor according to the coil arrangement ( 3 ) or the magnet arrangement ( 2 ), more preferably that a commutator with brush and slip ring is provided, more preferably, that the functional element ( 1 ) carries the brush or slip ring. Drive according to one of the preceding claims, characterized in that the magnet arrangement ( 2 ) or the coil arrangement ( 3 ) on the functional element ( 1 ), to the functional element ( 1 ) or in the functional element ( 1 ) is admitted. Drive according to one of the preceding claims, characterized in that the coil arrangement ( 3 ) or the magnet arrangement ( 2 ) on the anvil ( 4 ), to the anvil ( 4 ) or in the counter bearing ( 4 ) is admitted. Drive according to one of the preceding claims, characterized in that the coil arrangement ( 3 ) is realized by a flexible conductor foil. Drive according to one of the preceding claims, characterized in that a baffle arrangement is provided and that that of the magnet arrangement ( 2 ) generated magnetic field is guided by means of the baffle arrangement. Drive according to claims 3 and 20, characterized characterized in that the strike plate of the motor vehicle lock is a part of the baffle arrangement. Drive according to claim 20 and optionally according to claim 21, characterized in that the functional element axis ( 5 ), in particular a the functional element axis ( 5 ) forming bearing pin ( 11 ) o. The like., Part of the baffle arrangement is. Drive according to claim 20 and optionally according to claim 21 or 22, characterized in that the functional element ( 1 ) is a component of the baffle arrangement, preferably that the functional element ( 1 ) is designed for this at least in part substantially pot-shaped and that the magnet arrangement ( 2 ) in the cup-shaped part of the functional element ( 1 ) is arranged. Motor vehicle lock with the closing elements latch and pawl and with a lock mechanism, with an adjustable functional element ( 1 ), in particular a central locking lever o. The like., Is provided, wherein a drive is provided, wherein the drive is a magnet assembly ( 2 ) and a coil arrangement ( 3 ) and wherein by a control of the coil arrangement ( 3 ) a driving force or a driving torque between the magnet arrangement ( 2 ) and the coil arrangement ( 3 ) is produced and wherein the arrangement is made such that by the driving force or by the drive torque, the functional element ( 1 ) against an abutment ( 4 ) is motor-adjustable, characterized in that the functional element ( 1 ) the magnet arrangement ( 2 ) or the coil arrangement ( 3 ) and according to the counter bearing ( 4 ) the coil arrangement ( 3 ) or the magnet arrangement ( 2 ) and that the drive thus operates in the manner of a direct drive. Motor vehicle lock according to claim 24, characterized by the features of the characterizing part of one or more of claims 1 to 23.