Parking barrier system

Abstract

System with a parking lock device. In one example, the parking lock device comprises an actuator shaft including a semicircular cam interface with two lugs and a spring retaining flange. The parking lock device further comprises a spring coupled to the spring retaining flange and a cam engaging with the cam interface.

Description

CROSS-REFERENCE TO RELATED REGISTRATION

[0001] The present application claims priority over preliminary US application No. 63 / 688,653 entitled “Parking Barrier System”, which was filed on August 29, 2024. The entire contents of the aforementioned application are hereby incorporated by reference for all purposes. TECHNICAL AREA

[0002] The present disclosure relates to a parking lock system. In particular, the present disclosure relates to a parking lock system that reduces the reverse drive in a parking lock device when the device is actuated. BACKGROUND AND DETOUR

[0003] Vehicles are equipped with parking locks that prevent the vehicle from moving from a standstill by engaging a parking lock gear in the transmission. Inventors have recognized that some parking locks, due to their complex design, previously exhibited a backfeed torque and increased complexity. The backfeed torques are loads generated by the kinetic energy of the pawl, which ratchets and, due to the high rotational speed of the parking gear, cannot engage with the blade of the parking gear. These loads are transmitted back through the mechanism's kinematic chain to the actuator, in some cases causing damage or malfunction of the actuator.

[0004] The inventors recognized the aforementioned disadvantages of existing parking lock systems and developed a parking lock device that overcomes at least some of these drawbacks. In one example, the parking lock device comprises an actuator shaft featuring a semicircular cam interface with two lugs and a spring retaining flange. The parking lock device further includes a spring coupled to the spring retaining flange and a cam. The parking lock device also includes the cam connected to the cam interface. This reduces the return drive torque caused by the pawl, thereby increasing the durability and service life of the parking lock device.

[0005] In one example, the actuator shaft can have two gearbox housing interfaces, with the semicircular cam interface and the spring retaining flange positioned axially between the two gearbox housing interfaces. This increases the compactness of the parking lock device and allows the return drive torque to be transferred to the housing, which is better designed to withstand the increased load.

[0006] In another example, the parking lock device comprises a pawl that interacts with the cam and a pawl shaft with an integrated axial stop. The force exerted on the pawl when the parking lock engages is transferred to the housing, thereby reducing the risk of component damage.

[0007] It should be noted that the foregoing summary serves to present, in simplified form, a selection of concepts that are further explained in the detailed description. It does not serve to identify essential features of the claimed subject matter, the scope of which is clearly defined by the claims following the detailed description. Furthermore, the claimed subject matter is not limited to implementations that overcome all the disadvantages mentioned above or in any part of this disclosure. BRIEF DESCRIPTION OF THE FIGURES Fig. Figure 1 shows a vehicle with an electric drive, a gearbox, and a parking lock device. The Fig. Figures 2-4 show different views of an example of a parking lock device. Fig. Figure 5 shows a detailed view of a parking lock actuator, which is located in the Fig. The parking locking device shown in 2-4 is included. Fig. Figure 6 shows another view of the in Fig. Parking locking device shown in 2-4. Fig. 7-8 shows the parking lock device, which is located in the Fig. The images shown in 2-5 are in various configurations. Fig. 9 shows another view of the in Fig. Parking locking device shown in 2-4. Fig. Figure 10 shows a detailed view of an actuator shaft located in the Fig. The parking locking device shown in 2-4 is included. Fig. Figure 11 shows a detailed view of a pawl shaft, which is located in the Fig. The parking locking device shown in 2-4 is included. Fig. Figure 12 shows a method for operating a parking locking device. DETAILED DESCRIPTION

[0008] This section describes a parking lock device designed to reduce the reverse drive torque during the ratcheting action of the device when the pawl attempts to engage the parking wheel but cannot due to the speed of the parking wheel. To achieve the reduced reverse drive torque, the parking lock device includes an actuator shaft with a semicircular cam interface featuring two lugs and a spring-retaining flange.

[0009] Fig. Figure 1 shows a vehicle 100 with a powertrain 102 (e.g., an electric drive). Therefore, in various examples, the vehicle 100 can be an electric vehicle (EV) or an internal combustion engine vehicle (ICE). In one example, the vehicle may be a fully electric vehicle, as it is less complex and therefore has less potential for component damage than vehicles with internal combustion engines. For example, the electric drive unit may be an electric axle or include a traction motor that supplies energy to the power transmission, which in turn supplies energy to the drive axle. In other examples, however, the vehicle 100 may be a hybrid electric vehicle (HEV), in which the vehicle includes both an electric drive and an internal combustion engine (ICE).For example, the electric drive unit can provide power to one axle while the combustion engine provides power to another axle, or the combustion engine can be configured to charge the traction battery or another suitable energy storage device to extend the range. Furthermore, the vehicle can be a light, medium, or heavy commercial vehicle.

[0010] In the example of an electric drive, the drive train 102 can consist of an electric machine 104 (e.g., an electric motor or a motor-generator such as a multi-phase AC motor-generator, although numerous types of electric machines have been considered) and an energy storage device 106 (e.g., a battery such as a traction battery, a capacitor, combinations thereof, and the like). Arrows 108 show the transfer of electrical energy between the energy storage device 106 and the electric machine 104. In other examples, however, an internal combustion engine can be used instead of the traction motor and traction battery.

[0011] If the electric machine 104 is a multi-phase alternating current (AC) machine, the electric drive can include an inverter that converts direct current (DC) from the energy storage device 106 into alternating current (AC) for the electric machine and vice versa.

[0012] The drive train 102 can include a transmission 110 (e.g., a multi-speed transmission) coupled to the electric machine 104 or another suitable drive machine, such as an internal combustion engine. In particular, the arrows 111 indicate the transmission of mechanical power between the electric machine 104 and the transmission 110. This power transmission can be effected via shafts, gears, chains, rotary couplings, combinations thereof, and the like. The transmission 110 can include gears, couplings, shafts, and the like to achieve multi-speed functionality. The parking lock device 112 can be mechanically attached to the transmission 110 (e.g., by screws, clamps, and combinations thereof, etc.). The parking lock device is configured to selectively disengage the rotation of a parking lock gear 113 (which is located in the Fig. (as shown schematically in example 1) in the transmission, thus preventing the vehicle from moving. The parking lock device 112 can therefore be integrated into the transmission 110. The parking lock device 112 is shown schematically in Fig. 1 shown. However, the parking locking device 112 exhibits greater structural and functional complexity, which is described here in relation to the Fig. 2-11 will be explained in more detail.

[0013] The transmission 110 can be coupled to one or more drive wheels 114 via an axle 116, which may, for example, contain a differential 118. However, a variety of axle configurations are possible. The arrows 120 specifically indicate the transmission of mechanical force between the transmission 110 and the axle 116 (e.g., the differential 118). The axle shafts 122 can be coupled to the drive wheels 114 and the differential 118. In one embodiment, the electric drive can be an electric axle. Electric axles can represent a highly adaptable and space-saving drive unit. In other examples, however, the electric drive can also include a transmission and an electric motor that are spaced apart from the axle assembly.

[0014] The vehicle 100 can also include a control system 150 with a controller 152, as shown in Fig. Figure 1 shows the controller 152. The controller 152 can include a microcomputer with components such as a processor 154 (e.g., a microprocessor unit), input / output connectors, an electronic storage medium 153 for executable programs and calibration values, e.g., a read-only memory chip, a read-only memory, a diagnostic memory, a data bus, and the like. The storage medium can be programmed with computer-readable data representing instructions that can be executed by a processor to perform the procedures and control techniques described herein, as well as other variations that are expected but not explicitly listed.

[0015] The controller 152 can receive various signals from sensors 158 that are coupled to different areas of the vehicle 100. The sensors 158 can include, for example, a speed sensor of the electric motor, a pedal position sensor to detect the actuation of a pedal operated by the driver, such as an accelerator or brake pedal, speed sensors on the wheels 114, a position sensor 157 of the shift device, and the like. An input device 159 (e.g., an accelerator pedal, a brake pedal, combinations thereof, and the like) can also provide input signals that indicate an operator's intention to accelerate and brake the vehicle.

[0016] A switching device 160 (e.g., a gear selector) can also be integrated into the electric drive. The switching device 160 can include a park position 162. It is understood that the movement of the switching device into the park position can be detected by the control unit and that, in response to the detection of this movement, the control unit can send a control command to the parking lock device to initiate the engagement of the parking lock, and vice versa. The switching device 160 can further include a reverse gear position 163, a neutral position 164, a drive position 165, and / or one or more gear positions 166 (e.g., a first gear position, a second gear position, etc.). When an operator (schematically shown at 161) moves the switching device 160 into the park position 162, the parking lock device 162 can be moved into an engaged configuration.Conversely, the parking lock can be moved into a disengaged configuration when the operator moves the shift mechanism from the park position to one of the other available positions. Thus, the parking lock can be disengaged when the gear selector is moved to forward, reverse, or neutral, and locked when the gear selector is moved to the park position.

[0017] The shift device 160 and transmission components such as the parking lock, clutches, etc., can be electronically connected to the controller 152. In one such example, the parking lock and clutches can be engaged and disengaged by electronic command signals from the controller 152. In other examples, however, at least some of the transmission components may be mechanically coupled to the shift device. Furthermore, in the shift-by-wire configuration, the parking lock can be configured to be both manually released and electronically engaged and disengaged.

[0018] After receiving the signals from the various sensors 158 from Fig. 1. The controller 152 processes the received signals and uses various actuators 171 of vehicle components to adjust the components based on the received signals and the instructions stored in the controller 152's memory. For example, the controller 152 can receive an accelerator pedal signal indicating a driver's request for stronger vehicle acceleration. The controller 152 can then instruct the electric machine 104 to adjust the actuators in the electric machine to change the machine's power output and increase the power delivered by the machine to the drive wheels via the transmission. The controller can also receive a signal from the shift device 160 indicating that the device should move into the park position.In response to receiving this signal, the controller can send a command to the parking lock device to engage it in a retracted position, preventing the vehicle from moving. Other controllable components in the vehicle can function similarly, for example, with respect to sensor signals, control commands, and actuator settings.

[0019] An axis system is in Fig. 1 as well as in the Fig. Figures 2-11 are shown for reference where appropriate. In one example, the z-axis may be a vertical axis (e.g., parallel to a gravitational axis), the x-axis may be a lateral axis (e.g., a horizontal axis), and / or the y-axis may be a longitudinal axis. However, in other examples, the axes may have other orientations.

[0020] Fig. 2 and Fig. Figure 3 shows a parking lock device 200 in a parking lock system 203. The parking lock device 200 serves as an example for the parking lock device 112 in Fig. 1 shown. Therefore, the parking locking device 200 can be integrated into the drive train 102 (e.g., an electric drive) and / or share common structural and / or functional features with the one shown in Fig. 1 depicted parking locking device 112 and / or vice versa. For clarification: The parking locking device 200 can be inserted into the one shown in Fig. The gearbox shown is 110 integrated.

[0021] The in Fig. The parking lock device 200 shown in Figure 2 comprises a smart actuator 201, an actuator shaft 202, a cam 204, a pawl 206, a parking gear 208, a pawl shaft 210, and a spring 212. The smart actuator 201 includes a motor 211 and / or other mechanisms configured to rotate the actuator shaft 202. Furthermore, the smart actuator 201 can be designed to eliminate the need for an external position sensor and an external magnetic lever. Therefore, the parking lock device 200 does not include a position sensor and a magnetic lever located outside the smart actuator 201. In such an example, the motor 211 can include an integrated rotation sensor that detects the rotation angle of the actuator shaft 202. In the example shown, the intelligent actuator 201 comprises a housing 214 with mounting interfaces 216.An electrical interface 217 of the intelligent actuator 201 is additionally included in the . Fig. 2-3 shown.

[0022] In the illustrated example, the actuator shaft 202 includes a spring retaining flange 218 with a spring opening 220. The spring opening 220 is profiled to accommodate one end of the spring 212. The other end 222 of the spring 212 fits into a recess 224 in the cam 204.

[0023] The pawl 206 includes a projection 226 that engages with the parking gear 208 and prevents its rotation in an engaged position. The parking gear 208 has teeth 228 to activate this function. Conversely, the projection 226 disengages from the parking gear 208 when the parking locking device 200 is in the disengaged configuration. It is understood that the Fig. Figures 2-3 show the parking locking device 200 in the disengaged configuration. In the example shown, the parking gear 208 includes splined shafts 229 for attachment to a shaft in the gearbox.

[0024] A lug 230 of the cam 204 fits into a recess 232 of the pawl 206. The prongs 234 of the pawl 206 limit the rotation of the lug 230. A gap 236 can also be formed between the actuator shaft 203 and the cam 204. In the illustrated example, the actuator shaft 202 is parallel to the pawl shaft 210. This increases the space efficiency of the device. However, other relative orientations are also possible.

[0025] Fig. Figure 4 shows another view of the parking lock device 200. The actuator shaft 202, cam 204, pawl 206, parking gear 208, pawl shaft 210, and spring 212 are shown again. As shown, the spring 212 fits into the spring opening 220 in the actuator shaft 202. The actuator shaft 202 includes two gearbox housing interfaces 400 and 402, which are positioned axially outside the spring retaining flange 218 and the cam 204, respectively. In this way, the parking lock device 200 is designed for efficient spatial integration and sealing within the gearbox. The gearbox housing interfaces 400 and 402 can have a cylindrical shape and surfaces 406 that are in surface contact with the gearbox housing.

[0026] Arrows 410 indicate the general return drive load path leading to the gearbox housing 412, which is located in Fig. Figure 4 is shown schematically. It is understood that the parking lock device has a lower reverse drive load than previous parking locks, and the load is transferred to a component (i.e., the gearbox housing) that can withstand the load with a lower probability of damage. In this way, the durability and service life of the parking lock device are increased.

[0027] Fig. Figure 5 shows a detailed view of the intelligent actuator 201, which includes a motor 500 and an actuator shaft interface 502. The motor 500 can be arranged perpendicular to a vertical axis that runs parallel to the axis of rotation of the actuator shaft. In this way, the electric parking lock system can achieve the desired space efficiency.

[0028] Fig. Figure 6 shows another view of the parking locking device 200. The intelligent actuator 201, the actuator shaft 202, the cam 204, the pawl 206, the parking gear 208, the pawl shaft 210 and the spring 212 are shown again.

[0029] The Fig. Figures 7-8 show the parking lock device 200 in a retracted and a disengaged configuration, respectively. In the retracted configuration, which is shown in Fig. As shown in Figure 7, the projection 226 of the pawl 206 engages a blade 702 between the teeth 704 of the parking gear 208. The rotation of the cam 204 causes the pawl 206 to engage. Conversely, Figure 7 shows... Fig. 8 the advantage 226, which has moved out from the shovel 702.

[0030] Fig. Figure 9 shows another view of the parking locking device 200. The actuator shaft 202, the cam 204, the pawl 206, the parking gear 208, the pawl shaft 210, and the spring 212 are shown again. Two lugs 900 in a cam interface 902 of the actuator shaft 202 are shown. The lugs 900 enable a reduction of the back drive occurring in the parking drive device.

[0031] Fig. Figure 10 shows a detailed view of the actuator shaft 202. An actuator interface 1000 (e.g., a splined interface) is shown together with the cam interface 902, which includes the lugs 900. More precisely, the actuator interface 1000 comprises a semicircular section 1002 with the cam interface 902 between the lugs 900. The spring retaining flange 218 with the spring opening 220 is shown in Fig. Figure 10 is shown in more detail. A rotation axis 1004 of the actuator shaft 202 is shown for reference. In the illustrated example, the actuator shaft 202 has an inner radius 1006 and an outer radius 1008. A section 1010 of the actuator shaft 202 has a constant outer diameter, which serves to axially limit the cam when the cam is connected to the actuator shaft. The spring opening 220 and the other spring opening described here can run parallel to the rotation axis 1004 of the actuator shaft 202.

[0032] Fig. Figure 11 shows a detailed view of the pawl shaft 210 with an axial stop 1100 formed on it. The axial stop simplifies assembly and makes it possible to efficiently connect the shaft to the pawl 206 in the desired manner during assembly of the device.

[0033] Fig. Figure 12 shows a method 1200 for operating a parking locking device. The method 1200 can be implemented by any of the methods described here in relation to the Fig. The procedures described in sections 1 to 11 can be carried out using parking locking devices and systems, or combinations thereof. However, in other examples, the procedure 1200 can also be carried out using other suitable systems. Furthermore, the procedure 1200 can be implemented in the form of instructions stored in memory (e.g., non-transient memory) of the controller and executed by a processor.

[0034] In 1202, the procedure includes determining the operating conditions. The operating conditions may include the position of the parking lock device, the position of the shift device, the rotational speed of the drive motor (e.g., the rotational speed of the traction motor), the rotational speed of the drivetrain, the rotational speed of the transmission, the wheel speed, the vehicle speed, and the like. The operating conditions may be determined via sensor inputs, modeling, lookup tables, and / or other suitable techniques. In one example, determining the operating conditions may specifically involve sending data inferring the cam position in the parking lock device from a smart actuator to a controller. Therefore, the smart actuator may include a device configured to detect the angular position of the actuating shaft.

[0035] In the 1204 procedure, this includes determining whether the parking lock should be engaged. For example, it can be determined whether an operator has interacted with an input device (e.g., a gear selector device) to trigger the engagement of the parking lock. For example, a sensor in the gear selector can send data to the controller indicating an operator's wish to engage the parking lock.

[0036] If it is determined that the parking lock should not be engaged (NO for 1204), the procedure returns to 1202. If, however, it is determined that the parking lock should be engaged (YES for 1204), the procedure proceeds to 1206. In 1206, the procedure involves triggering the smart actuator via a controller command. Step 1206 may, in particular, involve switching on a motor in the smart actuator to rotate an actuator shaft. In 1208, the procedure involves engaging the parking lock in response to the triggering of the smart actuator. Procedure 1200 allows the parking lock to be engaged with a reduced return torque, thereby increasing the service life of the device.

[0037] Apart from the schematically depicted components, Fig. Figures 2-11 are drawn approximately to scale. However, other relative component dimensions may be used in alternative embodiments.

[0038] Fig.Figures 1-11 show example configurations with a relative positioning of the various components. If such elements are shown to be directly touching or directly coupled, then they can be described as directly touching or directly coupled, respectively, in at least one example. Similarly, elements shown side by side or adjacent to each other can be described as being adjacent or adjacent to each other in at least one example. For instance, components that are in planar contact with each other can be described as being in planar contact. As another example, elements that are separated from each other, with only a gap between them and that have no other components, can be described as such in at least one case.In yet another example, elements depicted above / below each other, on opposite sides, or to the left / right of each other can be described as such, relative to one another. Furthermore, in at least one example, as illustrated in the figures, a topmost element or the highest point of an element can be referred to as the "top" of the component, and a bottommost element or the lowest point of the element can be referred to as the "bottom" of the component. The terms top / bottom, upper / lower, and above / below used here can refer to a vertical axis of the figures and be used to describe the positioning of elements within the figures relative to one another. Thus, in one example, elements depicted above other elements are arranged vertically above the other elements.As a further example, the shapes of the elements depicted in the figures can be described as such (e.g., circular, straight, planar, curved, rounded, beveled, angled, and the like). Furthermore, in one example, elements that are coaxial with each other can be described as such. Additionally, the depicted elements that intersect each other can be described as intersecting elements or mutually intersecting elements in at least one example. Moreover, an element that is depicted inside or outside another element can be described as such. In other examples, elements that are offset from each other can also be described as such. Elements that are parallel, perpendicular, or at an angle to each other can be described as such.

[0039] The invention is described in more detail in the following paragraphs. In one embodiment, a parking lock device is provided, comprising an actuator shaft which includes: a semicircular cam interface with two lugs; a spring retaining flange; a spring coupled to the spring retaining flange and the cam; and a cam that interacts with the cam interface. In one example, the actuator shaft can have two gearbox housing interfaces, with the cam interface and the spring retaining flange positioned axially between the two gearbox housing interfaces. In another example, the parking lock device can further comprise a pawl shaft with an axial stop formed thereon. In yet another example, the parking lock device can further comprise a smart actuator that is rotationally coupled to the actuator shaft.In another example, the intelligent actuator can be configured to send data to a controller indicating the cam's rotational position. In yet another example, the parking lock device can be integrated into an electric drive.

[0040] In another aspect, a parking lock device is provided in an electric drive, comprising a smart actuator directly rotationally coupled to an actuator shaft. The actuator shaft includes: a semicircular cam interface with two lugs; a spring retaining flange; a helical spring coupled to the spring retaining flange and the cam; and a cam that engages with the cam interface, with the helical spring held axially between the cam and the spring retaining flange. In one example, the actuator shaft can have two gearbox housing interfaces, with the cam interface and the spring retaining flange positioned axially between the two gearbox housing interfaces. In another example, the parking lock device can further comprise a pawl shaft with an axial stop formed on it.In another example, the parking lock device may not contain a position sensor located outside the intelligent actuator.

[0041] In another aspect, a parking lock device is provided, comprising an actuator shaft that includes: a semicircular cam interface with two lugs; a spring retaining flange; a spring coupled to the spring retaining flange and a cam; and the cam that engages with the semicircular cam interface. In one example, the actuator shaft can have two gear housing interfaces, with the semicircular cam interface and the spring retaining flange positioned axially between the two gear housing interfaces. In another example, the parking lock device can further include a pawl shaft that engages with the cam. In yet another example, the parking lock device can further include a pawl shaft with an axial stop formed on it. In a further example, the pawl shaft can be parallel to the actuator shaft.In another example, the parking lock device can further include a smart actuator that is rotaryally coupled to the actuator shaft. In yet another example, the smart actuator can be configured to send data to a controller indicating the cam's rotational position. In yet another example, the parking lock device can be incorporated into an electric drive.

[0042] In another aspect, a method for operating a parking lock device is provided, comprising triggering an actuator in the parking lock device and engaging the parking lock device in response to the actuator's triggering. The parking lock device comprises: the actuator; an actuator shaft with a semicircular cam interface having two lugs and a spring retaining flange; a spring coupled to the spring retaining flange and a cam; and the cam engaging with the semicircular cam interface. In one example, the actuator may be an electric motor. In another example, triggering the actuator may include switching on the electric motor. In a further example, the method may include sending data from the actuator to a controller indicating the cam's position.In another example, the method can further comprise a pawl that interacts with the cam, and a pawl shaft coupled to the pawl, which has an axial stop formed therein. In another example, the actuator shaft can have two gearbox housing interfaces, wherein the semicircular cam interface and the spring retaining flange are positioned axially between the two gearbox housing interfaces. In yet another example, the pawl shaft can run parallel to the actuator shaft.

[0043] In another aspect, a parking lock device is provided in an electric drive, which includes An intelligent actuator directly rotary-coupled to an actuator shaft, comprising: a semicircular cam interface with two lugs; a spring-retaining flange; a helical spring coupled to the spring-retaining flange and a cam; and the cam itself, which interacts with the semicircular cam interface, wherein the helical spring is held axially between the cam and the spring-retaining flange. In one example, the actuator shaft may have two gear housing interfaces, with the semicircular cam interface and the spring-retaining flange positioned axially between the two gear housing interfaces. In another example, the parking lock device may further comprise a pawl interacting with the cam; and a pawl shaft coupled to the pawl, which has an axial stop formed therein.In another example, the parking lock device may not include a position sensor located outside the intelligent actuator. In yet another example, the locking pawl shaft may run parallel to the actuator shaft.

[0044] It should be noted that the example control and estimation routines contained herein can be used with various powertrain, electric drive, and / or vehicle system configurations. The control methods and routines disclosed herein can be stored as executable instructions in non-volatile memory and can be executed by the control system, including the controller, in combination with the various sensors, actuators, and other transmission and / or vehicle hardware. Thus, the described actions, operations, and / or functions can graphically represent code that is programmed into the non-transient memory of the computer-readable storage medium in the electric drive unit and / or vehicle system.The various actions, operations, and / or functions shown can be performed in the sequence presented, in parallel, or, in some cases, omitted. Accordingly, the processing sequence is not strictly necessary to achieve the features and benefits of the examples described here; it serves only for better illustration and description. One or more of the actions, operations, and / or functions shown can be executed repeatedly, depending on the specific strategy used. One or more of the procedural steps described here can also be omitted if desired.

[0045] Although various embodiments have been described above, these are to be understood as examples and not as limitations. Those skilled in the art will recognize that the disclosed subject matter can be implemented in other specific forms without departing from the spirit of the subject matter. The embodiments described above are therefore to be regarded in every respect as illustrative and not as limiting. Thus, the configurations and routines disclosed here are exemplary in nature, and these specific examples are not to be considered limiting, as numerous variations are possible. The technology described above can, for example, be applied to powertrains that include various types of power sources, including different types of electric machines, internal combustion engines, and / or transmissions.The subject matter of the present disclosure includes all novel and non-obvious combinations and sub-combinations of the various systems and configurations, as well as other features, functions and / or properties disclosed herein.

[0046] Unless otherwise stated, the term "approximately" means plus or minus five percent of the range.

[0047] The following claims specifically indicate certain combinations and subcombinations that are considered novel and not obvious. These claims may refer to "one" element, "a first" element, or the equivalent thereof. Such claims are to be understood as including one or more such elements, with two or more such elements neither required nor excluded. Other combinations and subcombinations of the disclosed features, functions, elements, and / or properties may be claimed by amending the present claims or by filing new claims in this or a related application. Such claims, whether they have a broader, narrower, the same, or different scope than the original claims, are also considered to be included in the subject matter of the present disclosure. QUOTES INCLUDED IN THE DESCRIPTION

[0000] This list of documents cited by the applicant was automatically generated and is included solely for the reader's convenience. The list is not part of the German patent or utility model application. The DPMA accepts no liability for any errors or omissions. Cited patent literature

[0000] US 63 / 688,653

[0001]

Claims

[1] Parking locking device comprising: an actuator shaft that contains: a semicircular cam interface with two lugs; and a spring retaining flange; a spring coupled to the spring retaining flange and a cam; and the cam engages with the semicircular cam interface. [2] Parking locking device according to claim 1, wherein the actuator shaft comprises two gearbox housing interfaces and the semicircular cam interface and the spring retaining flange are positioned axially between the two gearbox housing interfaces. [3] Parking locking device according to one of the preceding claims, further comprising a locking pawl engaging with the cam. [4] Parking locking device according to claim 3, which further comprises a pawl shaft with an axial stop formed thereon. [5] Parking locking device according to claim 4, wherein the locking pawl shaft runs parallel to the actuator shaft. [6] Parking locking device according to one of the preceding claims, further comprising an intelligent actuator which is rotary-coupled to the actuator shaft. [7] Parking locking device according to claim 6, wherein the intelligent actuator is configured to send data to a controller which indicates a rotational position of the cam. [8] Parking locking device according to one of the preceding claims, wherein the parking locking device is contained in an electric drive.

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