DE102021200062A1 - Parking lock device for a motor vehicle - Google Patents

Abstract

Parking lock device (1) for a motor vehicle (2), comprising at least one parking lock actuator (3) and a locking device (4), which is designed to at least one rotatable element (5) of a parking lock device (1) or with the parking lock device (1) to lock a rotatable element (5) that can be coupled, in particular a shaft, at least temporarily and/or as required, with the parking lock actuator (3) being designed to bring about a disengagement force on the locking device (4) in order to move the locking device (4) out of an engaged position State to move into a disengaged state, wherein the parking lock actuator (3) and the locking device (4) are spatially separated, in particular spaced apart and via a force transmission means (12, 12 '), in particular a traction means, are coupled to each other.

Description

The invention relates to a parking lock device for a motor vehicle, comprising at least one parking lock actuator and a locking device which is designed to lock at least one movable, in particular rotatable, element of a parking lock device at least temporarily and/or as required, the parking lock actuator being designed to generate a disengagement force on the locking device in order to convert the locking device from an engaged state to a disengaged state.

Parking lock devices for motor vehicles are basically known from the prior art. The motor vehicle is usually mechanically locked at a standstill with such a parking lock device in order to prevent the motor vehicle from moving unintentionally, for example from rolling away. For this purpose, for example, an element of the parking lock device can be rigidly coupled to a rotatable element of the transmission of the motor vehicle, in which a movable element of the parking lock device, in particular an element of the locking device of the parking lock device, can engage, i.e. can be engaged and disengaged. For example, an output shaft of the transmission of the motor vehicle can be coupled to a ratchet wheel of the parking lock device, in which ratchet wheel a parking lock pawl of the parking lock device can engage in order to ensure the engaged state of the parking lock device. The parking lock pawl can accordingly be disengaged again in order to convert the parking lock device into a released state or a disengaged state.

It is also known from the prior art that such parking lock actuators usually have actuating elements, in particular electric motors, in order to transfer the parking lock device between the engaged state and the disengaged state. Such actuators are mostly restricted with regard to possible installation positions, for example with regard to thermal requirements or space-related requirements. A compromise must therefore usually be found as to how a parking lock device with the described parking lock actuators can be installed in a motor vehicle. Furthermore, when retrofitting a parking lock actuator, in particular one that can be operated automatically, into a mechanical parking lock device, difficulties can arise when installing the parking lock actuator.

The invention is based on the object of specifying a parking lock device which is improved in comparison thereto.

The object is achieved by a parking lock device with the features of claim 1. Advantageous configurations are the subject matter of the dependent claims.

As described above, the invention relates to a parking lock device for a motor vehicle, ie a parking lock device that can be transferred from an engaged state to a disengaged state and from a disengaged state to an engaged state. The parking lock device can therefore be engaged and disengaged by the locking device and the parking lock actuator. For this purpose, the locking device of the parking lock device can lock a movable, in particular a rotatable, element of the parking lock device at least temporarily and/or as required. For example, the locking device locks a ratchet wheel of the parking lock device by positive engagement. In order to release the parking lock device, the parking lock actuator can cause a disengagement force on the locking device, so that the element previously locked by engaging the parking lock device is released again. It is thus possible to convert the parking lock device from the engaged state to the disengaged state by means of the parking lock actuator by applying the disengagement force to the locking device.

The invention is based on the finding that the parking lock actuator and the locking device are spatially separated, in particular at a distance from one another and are coupled to one another via a force transmission means, in particular a traction means. Accordingly, a power transmission means, in particular a traction means, for example a chain or a cable, can be provided in order to couple the parking lock actuator to the locking device. As a result, the parking lock actuator can ultimately be arranged at a location that is independent of the position of the locking device, resulting in corresponding advantages when installing the parking lock actuator in a motor vehicle. Ultimately, the force generated by the parking lock actuator can be transmitted to the locking device by the force transmission means, so that the usually required arrangement of the locking device on the parking lock actuator or integration of the locking device in the parking lock actuator can be achieved by coupling the locking device to the parking lock actuator via the force transmission means can be revoked.

In the actuating device can also be provided that the parking lock actuator is designed to be self-locking and the locking device device has an energy storage device which is designed to apply an insertion force that converts the locking device into the engaged state, wherein the disengagement force that converts the locking device into the disengaged state exceeds the insertion force. Accordingly, the parking lock device provides for the parking lock actuator not to be self-locking, ie the parking lock actuator can be forced to move by the energy store to which the locking device is coupled or which the locking device has. It is thus possible for the energy storage device to set the parking lock actuator accordingly and thereby convert the locking device into the engaged state.

In normal operation, in which the parking lock actuator transfers the locking device from the engaged state to the disengaged state, the parking lock actuator causes a disengagement force on the locking device that exceeds the engagement force exerted on the locking device by the energy store. In other words, the parking lock actuator can work against the insertion force exerted by the energy store on the locking device in order to convert the locking device into the disengaged state and hold it there by applying the disengagement force. If, for example, there is an error, for example a defect in the parking lock actuator, a defect in the energy supply of the parking lock actuator or a mechanical defect in the parking lock device, the parking lock device is transferred to the engaged state by the energy store, since the insertion force transfers the locking device to the engaged state and if necessary also moves the parking lock actuator. Since the parking lock actuator does not have self-locking, i.e. is designed without self-locking, it can be moved by applying the insertion force through the energy store, for example when the parking lock actuator is in a currentless state. For this purpose, among other things, a transmission of the parking lock actuator can be designed accordingly, so that no self-locking occurs in the parking lock actuator.

This makes it possible, in particular, for the energy store to ensure that the locking device is transferred safely into the engaged state even when the parking lock actuator or parking lock device is in a fault state, so that transfer is always possible even if the motor vehicle or the parking lock device is defective the parking lock device or the motor vehicle having the parking lock device into a safe state is possible. Furthermore, it can advantageously be achieved that the parking lock actuator, for example, only has to work under tension against the insertion force caused by the energy store and the insertion movement can ultimately be carried out by the energy store.

In this case, it can be provided, inter alia, that the energy store is designed to carry out the insertion movement independently and/or to at least partially support the insertion movement. For example, the parking lock actuator can execute a disengagement movement that counteracts the engagement movement generated by the energy store and thus moves the locking device or at least one locking element of the locking device from the engaged state to the disengaged state. If the parking lock device is to be transferred to the engaged state, i.e. if the parking lock device is to be locked, it can be provided that the parking lock actuator is switched off, i.e. no longer actively works against the insertion force. By switching off the parking lock actuator and the property of the parking lock actuator that this is designed to be self-locking, a forced movement of the parking lock actuator is effected, in which the locking device is transferred to the engaged state by the energy store.

It is also possible for the parking lock actuator for the engagement movement to execute a movement counter to the disengagement movement, so that the locking device can be transferred from the disengaged state to the engaged state with at least partial support from the energy store. In both cases, it is obviously possible for the energy store to be designed to independently carry out the engagement movement when the parking lock device is in a fault state. As a result, a so-called "fail-safe" state is guaranteed in which, in the event of a defect or error, the parking lock device is automatically engaged, i.e. the locking device is transferred from the disengaged state to the engaged state or the locking device is held in the inserted state is guaranteed. This ensures that the motor vehicle remains in a safe, i.e. locked, state or is transferred to such a state if a corresponding error state of the parking lock device or of the motor vehicle occurs. Such a defect or fault condition can affect the parking lock actuator, in particular its motor, a failure of the energy supply or a mechanical defect, in particular a break in a power transmission means.

The energy store can cause the insertion force in particular on a mechanical locking element of the locking device, for example a pawl or a locking pin or the like, which directly or indirectly engages in a form-fitting manner with the rotating element of the Transmission or the parking lock device manufactures. If the engaged state is reached, the energy store maintains the engaged state, since this brings about the insertion force on the locking device. In addition, it is possible for the insertion force to transfer the locking device from the disengaged state to the engaged state.

The energy store can ultimately be any energy store that is designed to apply the described insertion force, which transfers the locking device from the disengaged state to the engaged state or holds it in the engaged state. In this case, the energy storage device can be designed in particular as a spring device and/or as a hydraulic device and/or as a pneumatic device or can have such a device. Of course, different combinations of such devices are also possible. If the energy store is designed as a spring device, the spring device can be, for example, a mechanical helical spring or include one that can bring about the insertion force on the locking element of the locking device, for example a locking pin or a pawl. The parking lock actuator is designed to move the blocking element counter to the insertion movement, ie counter to the movement that is generated by the insertion force, since the disengagement force exceeds the engagement force. In particular, the parking lock actuator can be coupled to the locking element of the locking device by means of a force transmission means, in particular a traction device, so that the spatial separation between the parking lock actuator and the actual locking device can be carried out.

When the locking device moves or when the locking device is transferred into the disengaged state, the parking lock actuator works against the energy store, for example the spring device, and correspondingly preloads the spring device. If the parking lock actuator is moved into the engaged state, i.e. contrary to the disengagement movement, or if a mechanical defect or an electrical defect occurs that interrupts or ends the generation of force, i.e. the generation of the engagement force by the parking lock actuator on the locking element of the locking device, the permanent generation of the Insertion force on the part of the energy storage on the locking element of the locking device to the fact that the locking element of the locking device is moved into the inserted state.

As described above, the parking lock actuator can be coupled to the locking device by means of a force transmission means, in particular a traction means. This makes it possible, for example using a cable pull as the traction means, for the parking lock actuator to be spaced almost arbitrarily from the locking device, ie to be designed and arranged spatially separate from the locking device. Since the locking device is transferred to the engaged state by the energy store, it is advantageously sufficient that the parking lock actuator only works under tension, i.e. a movement or a transfer of the locking device from the engaged state to the disengaged state against the energy store and a holding of the Locking device allows in the designed state.

As described above, the parking lock device has a force transmission means that couples the parking lock actuator to the locking device. The parking lock actuator can be coupled to a locking element of the locking device by means of a force transmission means, in particular a traction means, which locking element is designed to engage in a locking contour of the element to be locked in the engaged state. The blocking element can be designed, for example, as a blocking bolt or blocking pin or the like and can be subjected to the insertion force by the energy store. To disengage the parking lock device, the parking lock actuator correspondingly moves the force transmission means, in particular applies the disengagement force to it under tension, with the force being transmitted to the blocking element by means of the force transmission means. The blocking element is thus moved by the parking lock actuator against the insertion force, which is caused by the energy store on the blocking element, in order to release the blocking contour of the element to be blocked.

Likewise, if the disengaging force on the part of the parking lock actuator is lost, for example if the power supply feeding the parking lock actuator is lost, a mechanical defect in the parking lock actuator or a crack in the force transmission means, the energy storage device ensures that the locking element in such a state fits into the locking contour of the one to be locked Elements engages and accordingly causes an engagement of the parking lock device. The blocking contour of the element to be blocked can in particular be a blocking contour arranged around the circumference, for example a blocking contour on a shaft of a transmission of the motor vehicle. In other words, the locking contour of the parking lock device can be arranged on an output shaft of a transmission device of the motor vehicle or connected to such. The blocking element has in particular an at least partially complementary contour and can engage in the blocking contour, so that a positive connection between the blocking element and the locking contour can be made, which can absorb the appropriate forces to secure the motor vehicle in the inserted state.

Appropriate configuration or choice of the geometry of the locking contour can also ensure further safety mechanisms, for example that the parking lock device can only be engaged below a defined vehicle speed.

According to a further embodiment of the parking lock device, it can be provided that the locking contour has a plurality of teeth and gaps arranged one on top of the other in the circumferential direction, the gaps being designed at least in sections to be complementary to a locking section of the locking element. Teeth and gaps thus alternate in the circumferential direction of the locking contour, with the locking element being able to engage in each of the gaps with a locking section in order to produce the form-fitting connection with the locking contour. Correspondingly, when the blocking element is in the disengaged position, the blocking contour can rotate with the element to be blocked, and when the blocking element is in an engaged position, the blocking contour can produce a positive connection through interaction with the blocking section of the blocking element, which blocks or blocks movement of the element to be blocked.

The blocking device can, for example, have a pivot bearing for the at least one blocking element, the blocking element being mounted so as to be rotatable about an axis of rotation by means of a lever arm. In principle, it is therefore possible for the blocking element, which is arranged on the lever, to be able to be moved about the axis of rotation or pivot axis of the lever arm and thus be brought into and out of engagement with the blocking contour, as described above.

The blocking device can also have a guide, in particular a linear guide, for the at least one blocking element. Accordingly, the blocking element of the blocking device is guided in the guide and can therefore be moved within the guide or guided by the guide by applying the insertion force or the disengagement force. The guide is designed in particular as a linear guide, so that a linear movement of the blocking element between the disengaged position and the engaged position and vice versa can be performed.

The parking lock actuator may further include a motor coupled to a spool configured to move the spool to at least partially wind the power transmission means connected to the spool onto the spool or at least partially unwind from the spool. The term “roller” denotes any element that is suitable for accommodating the force transmission means at least in sections or for enabling a corresponding movement of the force transmission means in the insertion movement and disengagement movement. In particular, the shape of the roller is not limited to cylindrical or disk-shaped elements, but the roller can also assume other forms or geometries, for example be embodied elliptically. Furthermore, the roller is also not self-locking, so that by applying the insertion force in the event of failure or omission of the disengagement force, a movement of the roller is possible in such a way that the at least one force transmission means can be unwound from the roller again in order to move the blocking element into the inserted position or .to transfer the inserted state.

For example, it can be provided that the motor is coupled to a first gear, for example the motor shaft is connected to a first gear. The roller can have a second gear wheel on its outer circumference or at any point, which meshes with the first gear wheel. The disengagement force can be adjusted in a defined manner by a corresponding transmission between the first gear wheel and the second gear wheel. The parking lock actuator is designed to be self-locking overall, so that in the event of a defect or a shutdown or the like, which leads to a loss of the disengagement force on the locking device caused by the parking lock actuator, the parking lock actuator, i.e. in particular the roller, can be moved by the energy storage device , so that the parking lock device can always be safely transferred to the engaged state.

The parking lock device can also have a position detection device that is designed to detect a current position of the roller. The position of the roller can thus be detected by means of the position detection device in order to form a basis for controlling the parking lock actuator. For this purpose, several positions can be approached, for example a preferred designed position in which the roller is positioned in such a way that advantages can result with regard to the torque to be applied by the motor of the parking lock actuator. Furthermore, it is ensured that the locking device is transferred in a defined manner between the engaged state and the disengaged state, and it can thus be ensured that the corresponding states can be assumed in a defined manner.

In a further configuration of the parking lock device, it can be provided that the force transmission means is arranged eccentrically on a crank element of the roller and the parking lock actuator is designed to place the crank element in the engaged position of the parking lock device in a defined holding position, in which a the roller effected torque is reduced from a maximum torque. Thus, the power transmission means is not necessarily wound up directly on an outer circumference of the roller, but a crank element can be provided that is arranged at a defined radial position on the roller. A movement of the roller, which is generated by the parking lock actuator, causes the crank element to move around the axis of rotation of the roller on a path defined by the arrangement of the crank element on the roller, in particular a circular path.

It is possible in particular by means of the position detection device to detect the position of the roller in order to place the parking lock device in a defined holding position. Depending on the circumferential position of the crank element, which is coupled to the power transmission means, different torques act on the roller via the crank element, which must be applied by the parking lock actuator, in particular the motor of the parking lock actuator. If the power transmission means then acts comparatively perpendicularly on a connecting line between the crank element and the axis of rotation, a torque acts on the roller which is in the range of a maximum torque that can be effected by the energy store on the roller. A movement of the roller, by means of which the crank element is removed from this position, reduces the torque to be applied due to the change in the angle between the force transmission element and the connecting line between the crank element and the axis of rotation. This makes it possible to reduce the torque to be applied compared to the maximum torque and thus to reduce the energy that is required to hold the parking lock device in the disengaged position or the disengaged state.

It can also be ensured that the arrangement between the crank element, the axis of rotation and the force transmission element does not lead to a dead center bearing, which would limit the freedom from inhibition. Ultimately, the required holding torque can thus be optimized so that the least possible energy has to be applied by means of the parking lock actuator, but the safe engagement of the parking lock device is ensured at all times.

In addition, the invention relates to a motor vehicle comprising a parking lock device, as described above. A corresponding parking lock device can therefore be arranged or installed in a motor vehicle. All the advantages, details and features that have been described in relation to the parking lock device can therefore be fully transferred to the motor vehicle.

• 1 eine Parksperrenvorrichtung für ein Kraftfahrzeug nach einem ersten Ausführungsbeispiel in radialer Ansicht;
• 2 die Parksperrenvorrichtung von 1 in axialer Ansicht;
• 3 eine Parksperrenvorrichtung für ein Kraftfahrzeug nach einem zweiten Ausführungsbeispiel in radialer Ansicht; und
• 4 einen Parksperrenaktor einer Parksperrenvorrichtung eines Kraftfahrzeugs.

The invention is explained below using exemplary embodiments with reference to the figures. The figures are schematic representations and show:

• 1 a parking lock device for a motor vehicle according to a first embodiment in a radial view;
• 2 the parking lock device from 1 in axial view;
• 3 a parking lock device for a motor vehicle according to a second embodiment in a radial view; and
• 4 a parking lock actuator of a parking lock device of a motor vehicle.

1 shows schematically a parking lock device 1 shown in detail of a motor vehicle 2, which is not shown in detail. The parking lock device 1 has a parking lock actuator 3 and a locking device 4 . The locking device 4 is designed to lock a movable, for example rotatable, element 5 of the parking lock device 1 at least temporarily and/or as required. The element 5 can, for example, be coupled directly or indirectly to an output shaft 6 of the motor vehicle 2 or a transmission device of the motor vehicle 2, for example integrated at least in sections into such a transmission element.

The parking lock actuator 3 is designed to bring about a disengagement force on the locking device 4 . The effect of the dismantling force is shown with an arrow 7. The locking device 4 can thus be transferred from an engaged state to a disengaged state by applying the disengagement force. The locking device 4 also has an energy store 8 , for example a spring element, which causes an insertion force on the locking device 4 , in particular a locking element 9 of the locking device 4 . The effect of the insertion force is represented by an arrow 10.

The parking lock device 1 can thus be transferred to a disengaged state by means of the parking lock actuator 3 in that a disengagement force is applied to the locking device 4 by means of the parking lock actuator 3, which forces the locking element 9 is moved against the energy store 8, in particular against the insertion force that is caused by the energy store 8 on the blocking element 9. In other words, the parking lock actuator 3 works against the energy store 8 when generating the disengagement force, which is represented by arrow 7. The energy store 8, for example a spring element, is compressed and the blocking element 9 is moved in the direction of the boom. In the situation shown, the blocking device 4 has a guide 11, in particular a linear guide, in which the blocking element 9 can be moved linearly.

If the actuation direction 1 is in the disengaged position, the disengagement force generated by the parking lock actuator 3 and the engagement force generated by the energy store 8 act on the locking element 9 of the locking device 4. Since the disengagement force in this case is the engagement force exceeds that, the parking lock actuator 3 can keep the parking lock device 1, in particular the locking device 4, in the disengaged state. If an error condition occurs, for example a defect in the energy supply of the parking lock actuator 3, a mechanical defect in the parking lock actuator 3 or a tear in a force transmission means 12, for example a traction means, in particular a cable pull, the energy store 8 causes the energy store 8 to generate the insertion force on the locking element 9 that the parking lock device 1 is automatically transferred to the engaged state and thus the parking lock device 1 is engaged. When it is engaged, the parking lock actuator 3 is therefore forced to move because it is designed to be non-self-locking. Thus, regardless of the state of the parking lock actuator 3, the parking lock device 1 can be engaged when the disengagement force is removed.

To disengage the parking lock device 1, the parking lock actuator 3 has a roller 13, on which the force transmission means 12 can be wound up and unwound again, at least in sections. For example, a motor is provided whose motor shaft 14 has a first gear wheel 15 or is coupled to one, which first gear wheel 15 meshes with a second gear wheel 16 connected to the roller 13 . The defined disengagement force that can be applied to the locking device 4 by means of the force transmission means 12 results in accordance with the translation that is set by the first gear wheel 15 and the second gear wheel 16 . As can be seen, the parking lock actuator 3 can be spaced at any distance from the locking device 4 and can be designed separately. The locking device 4 can therefore be arranged outside of a housing 17 of the parking lock actuator 3 .

In this exemplary embodiment, the force transmission means 12 only has to be able to work under tension, since a corresponding tensile force in the form of the disengagement force or the insertion force is transmitted by the parking lock actuator 3 or the energy store 8 by means of the force transmission means 12 . In this exemplary embodiment, an abutment for supporting the insertion force is also integrated in the locking device 4, for example in the guide 11.

When the parking lock device 1 is engaged or disengaged, the locking element 9 is clearly moved along arrow 7 or arrow 10 . The locking element 9 can bring about a direct locking of the parking lock device 1 in that the locking element 9 is designed as a locking pin or pawl or the like. The blocking element 9 engages in a blocking contour 18 which is formed from teeth 19 and gaps 20 arranged alternately in the circumferential direction of the element 5 . The locking contour 18 is shown in detail in 2 shown, which is an axial view of the parking lock device 1 of 1 represents. As can be seen, a blocking section 21 of the blocking element 9 engages in the blocking contour 18, namely in a gap 20 which is adjacent to two teeth 19 in the circumferential direction. The contour of the blocking section 21 is designed to be complementary to the gap 20 or the tooth flanks of the teeth 19, at least in sections.

3 shows a parking lock device 1 according to a second embodiment, wherein the representation of 3 the representation of 2 is equivalent to. The same reference numbers are therefore used for the same components since the parking lock device 1 according to FIG 3 the basic structure according to the parking lock device 1 of 1 , 2 is equivalent to. Of course, the power transmission means 12 with a corresponding parking lock actuator 3, as with reference to 1 described, coupled. Deviating from the guide 11, which is in 1 , 2 is shown, has the parking lock device 1 of 3 a pivot bearing 22, wherein the blocking element 9 is coupled via a lever arm 23 to an axis of rotation 24 or is rotatably mounted about the latter. The basic function is the same as that of the parking lock device 1 1 , 2 . In particular, by generating a disengagement force by means of the parking lock actuator 3, the force transmission means 12, which is coupled to the locking element 9, can be moved accordingly in order to compress the energy storage device 8 and to overcome the insertion force exerted by the energy storage device 8 on the locking element 9. The blocking element 9 and the blocking section 21 of the blocking element 9 are pulled out of the blocking contour 18 so that the latter is released. Accordingly, the element 5 to be locked, in particular the output shaft 6, can be released. The insertion movement is carried out in reverse, as previously described.

4 shows a parking lock actuator 3, for example in each of the parking lock devices 1, such as those in 1 - 3 are shown can be used. The parking lock actuator 3 in turn has a roller 13 which can be rotated about an axis of rotation 25 . This can be achieved by a motor which generates torque on the roller 13 by rotating the motor shaft 14 via a first gear wheel 15 translated to a second gear wheel 16 coupled to the roller 13 . In this exemplary embodiment, the power transmission means 12 is coupled to a crank element 26 which is arranged eccentrically to the axis of rotation 25 . The parking lock actuator 3 also has a position detection device 27 which is designed to detect the current position of the roller 13 .

It is thus possible to position the roller 13 accordingly via the parking lock actuator 3, in particular the motor shaft 14, so that a favorable position can be assumed in relation to a torque to be generated by the motor of the parking lock actuator 3. For example, a position 28 of the crank element 26 is shown in a dashed representation, in which a connecting line between the position 28 and the axis of rotation 25 and the orientation of the force transmission element 12′ enclose approximately a right angle. If crank element 26 is therefore in position 28, the motor of parking lock actuator 3 must apply a torque that is in the range of a maximum torque. Since the parking lock actuator 3 ultimately has to hold the parking lock device 1 in a disengaged position during the operation of the motor vehicle 2, in which the parking lock actuator 3 has to apply a corresponding torque that causes a disengagement force on the force transmission means 12, which the insertion force generated by the energy storage device 8 is generated exceeds, it is advantageous if the torque to be generated can be reduced during operation of the motor vehicle 2.

For this purpose, the crank element 26 can be moved from the dashed position 28 to the in 4 shown position are moved, in which the angle between the orientation of the power transmission element 12 and the connecting line between the axis of rotation 25 and the crank element 26 is significantly reduced. As a result, a large part of the insertion force introduced by the energy store 8 into the force transmission means 12 is compensated by the bearing of the roller 13, so that ultimately only a comparatively small torque has to be generated via the motor shaft 14 in order to 4 to hold the position shown. In order to be able to assume this position in a defined manner, the position detection device 27 is used, which can generate corresponding signals. Based on the signals generated by the position detection device 27, the motor of the parking lock actuator 3 can be controlled accordingly in order to reach and hold the position shown.

It can also be ensured that there is no dead center, in which the orientation of the force transmission means 12 and the connecting line between the axis of rotation 25 and the crank element 26 ultimately assume an angle of 0°. In such a state, the freedom of self-locking of the parking lock actuator 3 would not be guaranteed. It can thus be ensured by means of the position detection device 27 that an optimal state can be achieved in which a comparatively low torque has to be applied and the safe assumption of the engaged state can always be ensured even in the event of an error occurring. It is thus possible to significantly reduce the energy consumption of the parking lock actuator 3 while the motor vehicle 2 is in operation.

Of course, the aspects shown in the individual figures can be combined with one another as desired. Individual advantages, details and features can be combined, exchanged or transferred to one another.

Reference List

1

parking lock device

2

motor vehicle

3

Parking lock actuator

4

locking device

5

element

6

output shaft

7

Arrow

8th

energy storage

9

blocking element

10

Arrow

11

guide

12, 12'

power transmission means

13

role

14

motor shaft

15, 16

gear

17

Housing

18

locking contour

19

Tooth

20

gap

21

lockdown section

22

rotary bearing

23

lever arm

24, 25

axis of rotation

26

crank element

27

position detection device

28

position

Claims (13)

Parking lock device (1) for a motor vehicle (2), comprising at least one parking lock actuator (3) and a locking device (4), which is designed to at least one rotatable element (5) of a parking lock device (1) or with the parking lock device (1) to lock a rotatable element (5) that can be coupled, in particular a shaft, at least temporarily and/or as required, with the parking lock actuator (3) being designed to bring about a disengagement force on the locking device (4) in order to move the locking device (4) out of an engaged position state into a disengaged state, characterized in that the parking lock actuator (3) and the locking device (4) are spatially separated, in particular at a distance from one another and are coupled to one another via a force transmission means (12, 12'), in particular a traction means. Parking lock device after claim 1 , characterized in that the parking lock actuator (3) is designed to be self-locking and the locking device (4) has an energy store (8) which is designed to apply an insertion force that moves the locking device (4) into the engaged state, the locking device ( 4) deployment force moving to deployed condition exceeds insertion force. Parking lock device after claim 1 or 2 , characterized in that the energy store (8) is designed to carry out the insertion movement independently and / or to support the insertion movement at least partially. Parking lock device according to one of the preceding claims, characterized in that the energy store (8) is designed to carry out the engagement movement independently when the parking lock device (1) is in a fault state. Parking lock device according to one of the preceding claims, characterized in that the energy store (8) is designed as a spring device and/or as a hydraulic device and/or as a pneumatic device or has such a device. Parking lock device according to one of the preceding claims, characterized in that the parking lock actuator (3) is coupled by means of a force transmission means (12, 12'), in particular a traction means, to a blocking element (9) of the blocking device (4), which blocking element (9) is designed for this purpose is to engage in the inserted state in a locking contour (18) of the element (5) to be locked. Parking lock device after claim 6 , characterized in that the blocking contour (18) has a plurality of teeth (19) and gaps (20) arranged one on top of the other in the circumferential direction, the gaps (20) being designed at least in sections to be complementary to a blocking section of the blocking element (9). Parking lock device according to one of the preceding claims, characterized in that the locking device (4) has a pivot bearing (22) for the at least one locking element (9), the locking element (9) being rotatable about an axis of rotation (24) by means of a lever arm (23). is stored. Parking lock device according to one of Claims 1 until 7 , characterized in that the locking device (4) has a guide (11), in particular a linear guide, for the at least one locking element (9). Parking lock device according to one of the preceding claims, characterized in that the parking lock actuator (3) has a motor coupled to a roller (13), the motor being designed to move the roller (13) in order to connected power transmission element (12, 12 ') at least partially on the roll (13) or at least partially unwound from the roll (13). Parking lock device after claim 10 , characterized by a position detection device (27) which is designed to detect a current position of the roller (13). Parking lock device after claim 9 or 10 , characterized in that the force transmission element (12, 12') is arranged eccentrically on a crank element (26) of the roller (13) and the parking lock actuator (3) is designed to move the crank element (26) in the engaged position of the parking lock device (1st ) To place in a defined holding position in which a by the energy storage (8) on the roller (13) caused torque ment is reduced compared to a maximum torque. Motor vehicle (2) comprising a parking lock device (1) according to one of the preceding claims.

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