Actuators and devices having such actuators for engaging parking locks of automatic transmissions in motor vehicles, and motor vehicles equipped with such devices.

Abstract

The present invention relates to an actuator comprising: a drive device (2) for driving a drive shaft (1); a first operating element (3) operatively connected to said drive shaft (1) for operating a shifting device; and a rotating element (4) rotatably supported by means of said drive shaft (1), said rotating element having a first control curve (7) for controlling the adjustment position of the actuator, the first control curve being operatively connected to the first operating element (3) to operate the shifting device. According to the invention, the adjustment position of the actuator can be inductively determined by means of a receiving or holding element (10) for a position sensor (11) operatively connected to the rotating element (4).

Description

Technical Field

[0001] This invention relates to an actuator according to the preamble of claim 1. Furthermore, this invention relates to a device for activating a parking lock of an automatic transmission in a motor vehicle according to claim 14, and a motor vehicle equipped with the device according to claim 16. Background Technology

[0002] The use of automatic shift mechanisms or shift-by-wire systems in motor vehicles offers several advantages over mechanically coupled shift mechanisms. The gear selection can be flexibly and dynamically selected via software, depending on the vehicle's condition. Activation of the parking lock by engaging P (Park) is no longer manually performed by the driver, but is automatically ensured by the control software, for example, when the vehicle stops or leaves. Because engaging P to activate the parking lock is mandatory for safety reasons before the vehicle is driven away, the system and actuators have an emergency mechanism that should also ensure P engagement in the event of actuator interference or voltage failure. This emergency mechanism typically operates via an energy accumulator, such as a mechanical spring element, which, independently of the actuator, ensures, for example, engagement of the mechanical emergency position.

[0003] The actuator described in the preamble of claim 1 is known from DE 10 2011 014 815 A1. A motor vehicle parking lock actuator with at least one main shaft is described herein, wherein longitudinal movement for automatically shifting transmission gears is achieved by the rotational motion of a motor. An emergency function for engaging the parking lock is implemented here by a spring element, which is pre-tensioned by the actuation of the actuator in its non-parking position and mechanically held by a locking mechanism. The switching function for triggering the emergency mechanism to engage P gear should be implemented by a voltage source independent of the actuator. However, a disadvantage of this actuator is that a separate voltage source is required to trigger the emergency mechanism. Therefore, when the independent voltage source is also unavailable, P gear cannot be engaged, especially when the vehicle's battery is discharged and another voltage source, such as a normally functioning alternator, is also unavailable.

[0004] A parking lock device is disclosed in DE 100 45 953 B4, particularly for use in motor vehicles equipped with an automatically controllable transmission. The parking lock device has an operating mechanism including an operating element for operating the parking lock, a spring accumulator for activating the parking lock, a controllable servo drive for deactivating the parking lock, and a locking device for locking the parking lock in the deactivated state. The servo drive is electromechanically designed and connected to a master joystick. The spring accumulator, servo drive, and locking device can be connected or operatively connected to the operating element via the master joystick.

[0005] A known drawback of actuators is that the adjusted position of the actuator cannot be reliably determined, especially in the event of a current failure in the actuator or a failure of the coupling mechanism between the actuator and the regulating device. Furthermore, in some actuators, the motor motion does not correspond proportionally to the stroke at the actuator-regulator output, thus the motion of the transmission elements, such as the control cable, cannot be accurately determined. Summary of the Invention

[0006] Therefore, the object of the present invention is to further improve the actuator described in the preamble of claim 1 in such a way as to ensure reliable identification of the actuator's adjusted position in all situations, particularly in the event of a power failure or a mechanical problem with the actuator. Furthermore, the object of the present invention is to provide a device having such an actuator for engaging a parking lock of an automatic transmission in a motor vehicle, and an improved motor vehicle.

[0007] Regarding the actuator, this task is solved by an actuator having all the features of claim 1. With regard to a device for engaging a parking lock in an automatic transmission of a motor vehicle, this task is solved by a device having all the features of claim 14. This task is further solved by a motor vehicle according to claim 16. Advantageous configurations of the invention are derived in the dependent claims.

[0008] The actuator according to the invention has a drive mechanism for driving a drive shaft and a first operating element operatively connected to the drive shaft for operating a gear shifting device, particularly for motor vehicles.

[0009] Furthermore, a rotating element is provided that can be driven and rotatably supported by a drive shaft, the rotating element having a first control curve, the first control curve being operatively connected to a first operating element to operate the shifting device.

[0010] According to the present invention, the adjusted position of the actuator can be determined inductively by means of a receiving or holding element for a position sensor that is operatively connected to the rotating element.

[0011] To disengage from Park (P) and engage different gears, such as R, N, and D, a rotating element can be rotated by means of a drive unit and drive shaft, such that a first control curve causes a first operating element to move based on contact with the first control curve. A shifting device, for example having a shift cable system or shift lever, connecting the actuator to the automatic transmission, is configured to continue transmitting the motion generated on the actuator to the automatic transmission, thereby disengaging from Park and engaging different gears, such as R, N, and D.

[0012] Therefore, the first control curve can have different slopes for shifting motions or for engaging gears. The slope of the control curve can be designed, for example, to generate sufficient adjusting force under all conditions for disengaging the parking lock by means of an actuator or emergency adjustment device. The adjusting force here is primarily the minimum adjusting force required in the transmission for engaging different gears.

[0013] The principle of inductive measurement is based on the generation of eddy currents in metallic materials by a variable magnetic field.

[0014] In an inductive measurement system, a coil, as part of a resonant circuit, generates a magnetic field. If a conductive object is located within this magnetic field, eddy currents are generated in it according to Faraday's law of electromagnetic induction. These eddy currents then form a magnetic field that is opposite to the original magnetic field, thereby changing the impedance of the coil. This impedance change can be detected with high sensitivity in the resonant circuit, thus determining the range of the position sensor's location. The evaluation and signal processing of this impedance change can be performed in the controller. This method works for all conductive objects—both those made of ferromagnetic metals and those made of non-ferromagnetic metals.

[0015] The magnetic field generated by the coil can be set in an integrated circuit, for example, on a circuit board.

[0016] Advantageously, the actuator position can be reliably identified based on the aforementioned inductive measurement method. For example, additional reference movement of the actuator is unnecessary after the system is switched on. The measurement system is particularly advantageous in actuators where motor movement corresponds non-proportional to the stroke of the actuator-adjustment output. Motor movement can also be reliably detected in such actuators. High measurement accuracy can be achieved based on this invention. Furthermore, the inductive measurement system can be easily installed and is insensitive to mechanical tolerances. The inductive measurement system is also largely insensitive to temperature fluctuations.

[0017] In the event of a system failure in the actuator, the so-called "unreliable" state, that is, the state in which the reliable function of the actuator is not guaranteed, is accurately determined.

[0018] Advantageously, there is no need for a speed sensor attached to the drive unit or rotating element, and in particular, no need for a magnetic wheel, magnet, or Hall sensor for position determination. This is because the position sensor reliably monitors the actuator's adjusted position, predetermined by the first control curve.

[0019] In cases of mechanical coupling failure with the rotating element used as the control panel, or in cases where the actuator output reaches a potentially “unreliable” region, the sensing device can detect this region and output optical or acoustic warning or alarm signals.

[0020] According to an advantageous first configuration of the invention, the receiving or holding element has a second actuating element for interacting or cooperating with a second control curve disposed on the rotating element. Because the second control curve, based on a control or drive position sensor, reliably monitors the actuator's predetermined adjustment position by the first control curve. Mechanical coupling between the position sensor and the rotating element is achieved in this manner, so that the actuator's adjustment position can be accurately determined based on the angular position of the rotating element, indirectly determined by inductive measurement. The angular position of the rotating element is converted into the linear position of the position sensor relative to the magnetic field. Based on this measurement, the actuator's adjustment position can be reliably determined even in the event of mechanical connection failure or interference. It is also possible to define a so-called "reliable region" or "unreliable region." In other words, when the position sensor is in the "unreliable region," an optical or acoustic alarm signal can be output, for example.

[0021] According to another advantageous configuration of the invention, a position sensor is arranged on the end of the receiving or holding element opposite to the rotating element to inductively determine the adjustment position of the actuator. The measurement of the actuator's adjustment position is performed in this manner, spaced apart from the rotating element, thereby making the overall structure more compact. Furthermore, no additional sensors, such as Hall effect sensors, are required in this measurement method to determine the angular position of the rotating element.

[0022] According to another advantageous configuration of the invention, the position sensor is preferably a metal plate received in a frame, which interacts with a magnetic field to inductively determine the adjustment position of the actuator, the magnetic field preferably being formed by a conductor loop arranged on or on a circuit board. Redundant measurement of the actuator's adjustment position is performed by this contactless position measurement based on an electromagnetic alternating field. The linear inductive position measuring device can in particular have a transmitting coil and receiving coil system applied on a common circuit board. The position sensor, "suspended" relative to the coil system, is supplied with a (high-frequency) magnetic alternating field generated by the transmitting coil. A voltage in the receiving coil system is induced by the position sensor in response to the position. This inductive measurement principle is particularly advantageous because it is magnetically insensitive and operates contactlessly, losslessly, and dynamically. The phase relationship of the measurement signal is a measure of the current position of the position sensor and is converted into a linear position signal by an electronic device. The position of the position sensor and thus the position of the rotating element or the adjustment position of the actuator can be determined with high precision in this manner.

[0023] In another advantageous variant of the invention, the position sensor arranged in the frame is bent relative to the actuating element, thereby making optimal use of the structural space provided in the actuator despite the limited spatial relationship.

[0024] According to an advantageous further embodiment of the invention, the safety pin is operatively connected to the first actuating element of the first control curve. Furthermore, a stop for the safety pin is provided on the receiving or holding element, by means of which the position sensor can be moved. The safety pin moves along the control curve according to the position of the actuator, i.e., the position of the rotating element. If a fault occurs in the coupling between the receiving or holding element and the rotating element, for example, if the coupling breaks, the position sensor will no longer move along with the rotating element. The adjusted position of the actuator can no longer be sensed. For this reason, a stop is provided in the curved region of the receiving or holding element. When the coupling between the receiving or holding element and the rotating element is faulty and the position sensor no longer moves along with the rotating element, the safety pin, operatively connected to the first actuating element of the first control curve, can reach the stop. The safety pin then moves the position sensor through the stop.

[0025] To provide a particularly simple structural configuration for the rotating element, it has proven effective to construct the rotating element as a disk, on which two control curves are respectively arranged on opposite surfaces. In this respect, the control curves can be arranged without problems by means of corresponding mating elements, without having to consider the interference effects of corresponding additional control curves or mating elements corresponding to those control curves.

[0026] According to an advantageous further embodiment of the invention, the receiving or holding element is arranged inside the actuator housing in order to save structural space and further improve the compactness of the actuator.

[0027] Here, the first mating element of the operating element for manipulating the gear shifting device is configured to interact or cooperate with the first control curve, and the second mating element of the second operating element is configured to interact or cooperate with the second control curve. This further improves the accuracy and reliability of control and measurement.

[0028] Design schemes based on the first and / or second control curves can limit the rotational element's rotational motion to an effective range between a maximum negative rotational position and a maximum positive rotational position, thereby enabling, for example, rotation along half a revolution in each rotational direction, i.e., approximately +180° or -180°. In a particularly advantageous configuration of the invention, this is achieved by constructing the rotational element with two control curves, such that the rotational element can be rotated between a maximum negative angle position of -180° and a maximum positive angle position of +180° via a drive shaft or drive device.

[0029] Advantageously, the first control curve can be configured such that when the rotating element rotates from its neutral rotational position of 0° toward its maximum negative rotational position of -180°, the position of the operating element for operating the shifting device remains unchanged.

[0030] According to another advantageous configuration of the invention, when the rotating element rotates from 0° toward the maximum positive angle position, for example, the maximum 180°, different gears of the shifting device can be adjusted by means of the first control curve and the first cooperating element of the first operating element.

[0031] It is also advantageous to arrange a screw on the drive shaft, through which a gear assembly can be driven, which in turn drives a rotating element. Here, the rotating element itself can be part of the gear assembly, and it is also possible that the gear assembly itself consists of only a single gear.

[0032] Alternatively, the gear assembly could be composed of multiple gears that are in operative connection with each other, wherein each gear is constructed as a disk with a corresponding control curve on its opposite surface.

[0033] Also, a device for engaging a parking lock in an automatic transmission of a motor vehicle, having the aforementioned actuator, should be separately protected.

[0034] In addition, a motor vehicle using the aforementioned device should also be protected independently, wherein the motor vehicle has an automatic transmission and the aforementioned parking lock for engaging the automatic transmission.

[0035] According to an advantageous concept of the invention, such a device or a motor vehicle having said device has a mechanical, electromechanical, electrical, electronic, hydraulic or pneumatic emergency adjustment device, which enables the movement of the operating element of the gear shifting device when the drive unit cannot be driven.

[0036] The emergency adjustment device can consist of a pin with a gear mounted on it. The gear can be rotated via an opening using a tool, particularly an Allen wrench. The gear can be subjected to a spring force that resists the spring's return force, thereby enabling it to engage with a wedge gear on the output shaft of the drive unit. This emergency adjustment device allows the first operating element to be operated by manipulating the rotating element via the output shaft, which is directly connected to the drive shaft of the drive unit, using a tool, particularly an Allen wrench.

[0037] Further objects, advantages, features, and applications of the invention will become apparent from the following description of embodiments with the aid of the accompanying drawings. Here, all features described and / or illustrated also form the subject matter of the invention individually or in any meaningful combination, regardless of their combination in the claims or in the backreferences of the claims. Attached Figure Description

[0038] The attached diagram shows:

[0039] Figure 1 An embodiment of the actuator according to the invention is shown in a perspective view from one side.

[0040] Figure 2 A three-dimensional top view showing the data based on... Figure 1 According to one embodiment of the actuator of the present invention,

[0041] Figure 3 : Shown from a top-down view according to Figure 1 The actuator,

[0042] Figure 4 : Shown from a top-down, three-dimensional view based on Figure 1 Detailed diagram of the actuator,

[0043] Figure 5 : As shown in the view below according to Figure 1 The actuator, and

[0044] Figure 6 : Shown from a top-down, three-dimensional view based on Figure 1Detailed diagram of the actuator with safety devices. Detailed Implementation

[0045] Figure 1 An embodiment of an actuator according to the present invention is shown. The actuator is based on... Figure 3 Arranged on housing member 16 and can be covered by a housing cover (not shown). The rope system 9 can also be seen in this view, by means of which the different gears of the vehicle's automatic transmission can be adjusted. The rope system 9 is here connected to the first operating element 3 to operate the shifting device of the vehicle's automatic transmission. This is also... Figure 5 It is understood that the diagram shows the actuator from a view below.

[0046] exist Figure 2 An embodiment of the actuator according to the invention is now shown in a perspective view from above. A rotating element 4, configured as a gear 15, is clearly visible here, further configured as a disk 6. The rotating element 4 is rotatably supported at its center point and has two distinct control curves 7 and 8 on its opposing surfaces 18 and 19. The gear 15, which may also be part of a gear assembly, is in this case... Figure 1 and 2 The screw 5 of the drive shaft 1 of the drive device 2 shown in the figure is engaged.

[0047] exist Figure 5 The first control element 3 can be seen. On one hand, the first control element is provided with a first cooperating element 20, which is used to cooperate with the first control curve 7. On the other hand, the first control element is connected to the cable system 9 of the automatic transmission shifting device of the motor vehicle.

[0048] exist Figure 2 The actuator is now shown in a three-dimensional view from above, and... Figure 3 The actuator is shown in a top-down view. The rotating element 4, constructed as a disk 6 and a gear 15, is particularly well seen here, and is rotatably supported. The drive unit 2, with its drive shaft 1, is also now visible in this view, wherein a screw 5 is arranged on the drive shaft 1, and the screw meshes with the gear 15.

[0049] As if by Figures 1 to 6 As is known, the adjusted position of the actuator can be determined by means of the receiving or holding element 10 of the position sensor 11, which is connected to the rotating element 4.

[0050] In the inductive measurement system, a coil, as part of a resonant circuit, generates a magnetic field. A conductive object is placed within this magnetic field, and eddy currents are induced in the object according to Faraday's law of electromagnetic induction. These eddy currents, in turn, generate a magnetic field opposite to the original magnetic field, thereby changing the impedance of the coil. This impedance change can be detected with high sensitivity in the resonant circuit, thus determining the range of the position of the position sensor 9. The evaluation and signal processing of the impedance change can be performed in the controller. This method works for all conductive objects—both those made of ferromagnetic metals and those made of non-ferromagnetic metals.

[0051] In this embodiment, the coil is composed of a conductor loop 14 arranged on the circuit board 13, as if it were made of... Figures 1 to 3 And especially by according to Figure 4 As can be seen from the detailed diagram, the magnetic field generated by the conductor loop 14 can be set in an integrated circuit, for example, on a circuit board 13.

[0052] The actuator position is reliably identified in the manner described. In the event of a system failure of the actuator, the so-called "unreliable" state, i.e., a state in which the reliable functioning of the actuator is not guaranteed, is accurately determined. This is because the position sensor 11 reliably monitors and outputs the adjustment position of the actuator predetermined by the first control curve 7.

[0053] In cases of mechanical coupling failure with the rotating element used as the control panel, or in situations where the actuator output reaches a potentially "unreliable" region, the sensing device detects this region and can output an optical or acoustic alarm signal. This can be done, if necessary, by means of evaluation using additional sensors in the vehicle, such as those used to detect wheel speed, or sensors on the transmission.

[0054] As if by Figures 1 to 6 As is known, the receiving or holding element 10 has a second actuating element 17 for interacting or cooperating with a second control curve 8 set on the rotating element 4. This is because the second control curve 8, based on the control or drive position sensor 11, reliably monitors the actuator's predetermined adjustment position as defined by the first control curve 7.

[0055] The mechanical coupling between the position sensor 11 and the rotating element 4 is achieved in this manner, so that the adjustment position of the actuator can be accurately determined based on the angular position of the rotating element 4, which is indirectly determined through inductive measurement. In other words, the angular position of the rotating element 4 is converted into the linear position of the position sensor 11 relative to the magnetic field.

[0056] Based on the aforementioned measurements, the adjusted position of the actuator can be reliably determined even in the event of mechanical connection failure or interference. It is also possible to define so-called "reliable zones" or "unreliable zones." In other words, when the position sensor is in the "unreliable zone," an optical or acoustic alarm signal can be output, for example.

[0057] As if by Figures 1 to 6 As further understood, the position sensor 11 is arranged on the end of the receiving or holding element 10 away from the rotating element 4 to inductively determine the adjusted position of the actuator. The position sensor 11 is a metal sheet received in the frame 12, which interacts with the magnetic field formed by the conductor loop 14 on the circuit board 13 to inductively determine the adjusted position of the actuator. Redundant measurement of the actuator's adjusted position is performed through this non-contact position measurement based on an electromagnetic alternating field.

[0058] The conductor loop 14 can be configured as a transmitting coil and a receiving coil system, which are jointly applied to the circuit board 13. A position sensor 11, "suspended" relative to the coil system, is supplied with an alternating magnetic field generated by the transmitting coil. A voltage in the receiving coil system is induced by the position sensor 11 in response to its position. The phase relationship of the measured signal is a measure of the current position of the position sensor 11 and is converted into a linear position signal by an electronic device. The position of the position sensor 11 and thus the position of the rotating element 4 or the adjusted position of the actuator can be determined with high precision in this manner.

[0059] Here, according to Figures 1 to 4 and Figure 6 The position sensor 11, arranged in the frame 12, is bent relative to the second actuating element 17, that is, the position sensor is located in the bent region 24 of the receiving or holding element 10.

[0060] The two control curves 7 and 8 are arranged on one of the opposite faces 18 and 19 of the disk 6, respectively.

[0061] The receiving or holding element 10 is arranged inside the actuator housing (not shown) to save structural space and further improve the compactness of the actuator.

[0062] As especially by Figure 1 and 2 As is known, the first mating element 20 of the first operating element 3 for operating the gear shifting device is configured to act or cooperate with the first control curve 7, and the second mating element 21 of the second operating element 17 is configured to act or cooperate with the second control curve 8. This further improves the accuracy and reliability of control and measurement.

[0063] The function of the actuator according to the invention can be particularly derived from... Figure 2 and 3 Therefore, the mating element 20 of the first operating element 3 is operatively connected to the first control curve 7, which is arranged on the surface 18 of the rotating element 4. If the rotating element 4, configured as a gear 15, is now rotated by means of the drive device 2, drive shaft 1, and screw 5, the operating element 3 moves in such a way, based on the engagement of the mating element 20 and the control curve 7, that the automatic transmission can be moved out of a gear, such as P, by means of a shifting device operated by the cable system 9 and not specifically shown here, and different gears, such as R, N, and D, can be selected. The rotating element 4 is thus restricted in its rotational movement based on the control curve 7, thereby enabling rotation at approximately +180° to -180° or other values.

[0064] During the rotation of the rotating element 4, the second mating element 21 of the second operating element 17 also shifts in the second control curve 8. As explained, the two control curves 7 and 8 are arranged on the opposing surfaces 18 and 19 of the rotating element 4, so that the two control curves 7 and 8 rotate together accordingly when the rotating element 4 rotates.

[0065] The displacement of the second actuating element 17, which has a second mating element 21, arranged on the receiving or holding element 10, causes the metal sheet received in the frame 12, i.e., the position sensor 11, to move linearly relative to the magnetic field generated by the conductor loop 14. The position of the position sensor 11 can thus be accurately determined inductively and without contact.

[0066] Depend on Figure 6 Another implementation of the actuator is derived. Here, the safety pin 23 is operatively connected to the first operating element 3 of the first control curve 7. The safety pin 23 moves along with the control curve 7 according to the position of the actuator, i.e., the rotating element 4. In this embodiment, the safety pin 23 moves linearly, particularly in the direction of movement of the position sensor 9 during normal operation of the actuator.

[0067] As if by Figure 6 As further learned, the position sensor 11, which receives or holds the element 10 and is coupled to the rotating element 4, moves at a small distance before the rope system 9 through the conductor loop 14 or the magnetic field generated by the conductor loop when the shifting device is operated.

[0068] If a malfunction occurs during the coupling of the receiving or holding element 10 with the rotating element 4, such as a break in the coupling, the position sensor 11 will no longer move along with the rotating element 4. The adjusted position of the actuator can no longer be sensed. For this reason, according to... Figure 6A stop 22 is provided on the curved region 24 of the receiving or holding element 10. When the coupling between the receiving or holding element 10 and the rotating element 4 is faulty and the position sensor 11 no longer moves together with the rotating element 4, the safety pin 23, which is connected to the first operating element 3 of the first control curve 7, can reach the stop 22.

[0069] Safety pin 23 then moves position sensor 11 via stop 22.

[0070] For example, safety pin 23 can move position sensor 11 to the adjusted position "disengaged from parking" or "R, N, D". The software can then identify this "unreliable state" caused by a malfunction, i.e., "non-parking state", and output an acoustic or optical alarm signal.

[0071] In addition, by Figure 1 Knowing that the emergency adjustment device 25 is mechanical, electromechanical, electrical, electronic, hydraulic or pneumatic, when the drive device cannot be driven, the control element 3 can be moved by means of the emergency adjustment device to operate the shifting device.

[0072] The emergency adjustment device 25 can be constructed from a pin, on which a gear is arranged. The gear can be rotated through an opening using a tool, particularly an Allen wrench. The gear can be subjected to a spring force that resists the spring return force, thereby enabling it to engage with a wedge gear on the output shaft of the drive unit. With the aid of the emergency adjustment device 25, the first operating element 3 can be operated by manipulating the rotating element 4 via the output shaft, which is directly connected to the drive shaft 1 of the drive unit 2, using a tool, particularly an Allen wrench.

[0073] List of reference numerals

[0074] 1. Drive shaft

[0075] 2. Drive unit

[0076] 3 First control element

[0077] 4 Rotating elements

[0078] 5 screws

[0079] 6 disks

[0080] 7 First control curve

[0081] 8 Second control curve

[0082] 9. Rope System

[0083] 10 Receiving or Holding Elements

[0084] 11 Position Sensors

[0085] 12 frames

[0086] 13 Circuit Boards

[0087] 14 Conductor return

[0088] 15 Gears

[0089] 16 Shell Components

[0090] 17 Second control element

[0091] 18 sides

[0092] 19 sides

[0093] 20 First mating element

[0094] 21 Second mating element

[0095] 22 Stop

[0096] 23 Safety pins

[0097] 24. Curved area

[0098] 25. Emergency control device.

Claims

1. An actuator having: A drive device (2) that drives a drive shaft (1); A first operating element (3) for operating the gear shifting device, which is operatively connected to the drive shaft (1); and A rotating element (4) is driven and rotatably supported by the drive shaft (1), the rotating element having a first control curve (7) for controlling the adjustment position of the actuator, the first control curve being operatively connected to the first operating element (3) to operate the shifting device. Its features are, The adjustment position of the actuator can be determined inductively by means of a receiving or holding element (10) for a position sensor (11) which is operatively connected to the rotating element (4). The position sensor (11) is arranged on the end of the receiving or holding element (10) away from the rotating element (4) to inductively determine the adjustment position of the actuator.

2. The actuator according to claim 1, characterized in that, The receiving or holding element (10) has a second operating element (17) for interacting with or cooperating with a second control curve (8) disposed on the rotating element (4).

3. The actuator according to claim 2, characterized in that, The position sensor (11) is a metal sheet received in a frame (12) that interacts with a magnetic field to inductively determine the adjustment position of the actuator, the magnetic field being formed by a conductor loop (14) arranged at or on a circuit board (13).

4. The actuator according to claim 2, characterized in that, The position sensor (11) with frame (12) is bent relative to the second manipulation element (17).

5. The actuator according to claim 4, characterized in that, The position sensor is located in the curved region (24) of the receiving or holding element (10).

6. The actuator according to any one of claims 1, 2, and 5, characterized in that, The safety pin (23) is operatively connected to the first actuating element (3) of the first control curve (7), and a stop (22) for the safety pin (23) is provided on the receiving or holding element (10), wherein the position sensor (11) can be moved by means of the safety pin (23).

7. The actuator according to any one of claims 1, 2, and 5, characterized in that, The rotating element (4) is constructed as a disk (6), and two control curves (7, 8) are respectively arranged on one of the opposing surfaces (18, 19) on the disk.

8. The actuator according to any one of claims 1, 2, and 5, characterized in that, The receiving or holding element (10) is arranged inside the housing.

9. The actuator according to any one of claims 1, 2, and 5, characterized in that, The receiving or holding element (10) is arranged on the housing member (16) of the actuator.

10. The actuator according to claim 2, characterized in that, The first cooperating element (20) of the first operating element (3) is configured to act or cooperate with the first control curve (7), wherein the second cooperating element (21) of the second operating element (17) is configured to act or cooperate with the second control curve (8).

11. The actuator according to any one of claims 1, 2, 5, and 10, characterized in that, The rotating element (4) is configured with two control curves (7, 8) so that the rotating element can be rotated between a maximum negative angle position of -180° and a maximum positive angle position of +180° by means of the drive shaft (1) or the drive device (2).

12. The actuator according to any one of claims 1, 2, 5, and 10, characterized in that, The first control curve (7) is configured such that when the rotating element (4) rotates from its neutral rotation position of 0° toward its maximum negative rotation position of -180°, the position of the first operating element (3) for operating the shifting device remains unchanged.

13. The actuator according to claim 10, characterized in that, When the rotating element (4) rotates from its neutral rotation position of 0° toward its maximum positive rotation position of 180°, different gears of the shifting device can be adjusted by means of the first control curve (7) and the first cooperating element (20).

14. The actuator according to any one of claims 1, 2, 5, 10, and 13, characterized in that, A screw is arranged on the drive shaft (1), and the rotating element (4) is driven by the screw via a gear assembly.

15. A device for engaging a parking lock of an automatic transmission of a motor vehicle, comprising an actuator according to any one of claims 1 to 14.

16. The device according to claim 15, characterized in that, An emergency adjustment device, which is mechanical, electromechanical, electrical, electronic, hydraulic or pneumatic, is provided so that when the drive device (2) cannot be driven, the first operating element (3) can be moved and / or the spring element (5) can be tensioned by means of the emergency adjustment device.

17. A motor vehicle having an automatic transmission and a device according to claim 15 or 16 that interacts with said automatic transmission.

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