Parking lock operating system

Abstract

The invention relates to a parking lock operating system (1), which comprises an operating element (2) movable between a locked position and an unlocked position, and a locking element (4) movable between a locked position and an unlocked position and displaceable between a locking preparation position and a release position, in which the release of the locking element (4) from its locked position is positively locked, and in the release position, the locking element (4) is movable between its unlocked position and its locked position.

Description

Technical Field

[0001] The present invention relates to a parking lock operating system for a motor vehicle, preferably a hybrid or purely electric motor vehicle. The parking lock operating system includes an operating element that can be coupled to or is coupled thereto. The operating element is movable between a locked position and an unlocked position. In the locked position, the parking lock is active, i.e., a driven component of the motor vehicle is locked against rotation. In the unlocked position, the parking lock is inactive, i.e., rotation of the driven component of the motor vehicle is released. In particular, the operating element is movable along its longitudinal axis. In particular, the operating element is movable to its unlocked position against the restoring force of a (first) spring element. The parking lock operating system includes a locking element that can be coupled to or is coupled thereto. The locking element is movable between a locked position and an unlocked position. In the locked position, the locking element positively secures the operating element in its unlocked position, i.e., the locking of the operating element is active. In the unlocked position, the operating element is movable between its locked and unlocked positions, i.e., the locking of the operating element is inactive. In particular, the locking element is movable along its longitudinal axis. In particular, the locking element can overcome the restoring force of the (second) spring element and move into its locking position. In other words, the locking element is configured to fix / retain the operating element in its unlocking position in a form-fitting manner. Background Art

[0002] Such parking lock operating systems are already sufficiently known from the prior art. For example, DE 10 2017 102804A1 discloses a device for operating a parking lock.

[0003] However, this parking lock operating system has disadvantages in terms of its complexity and functionality. In particular, there is a dependency of the parking lock operating system on the state of charge of the onboard electrical system or the state of the hydraulic system. Summary of the Invention

[0004] The object of the present invention is therefore to provide a parking lock operating system which, by simple means, allows the transport of a motor vehicle independently of the charge state of the onboard electrical system of the motor vehicle and independently of the state of the hydraulic system.

[0005] The operating element and the locking element are each operatively connected to a hydraulic operating cylinder. Furthermore, the two hydraulic operating cylinders are connected via their pressure chambers to a common hydraulic medium supply line and are coordinated with one another so that the locking element moves starting from a lower pressure value in the hydraulic medium supply line, and the operating element moves starting from a higher pressure value in the hydraulic medium supply line, the higher pressure value being higher than the lower pressure value. In other words, the locking element moves starting from a lower pressure value in the hydraulic medium supply line than the operating element. This coupling of the two operating cylinders controlling the operating element and the locking element allows for a simple and straightforward hydraulic control of the parking lock. Furthermore, the transport state of the vehicle can be reliably switched using simple means, so that the parking lock remains unlocked / inactive when the hydraulic supply is depressurized. This also allows for simple control of all other operating states of the parking lock operating system.

[0006] Furthermore, the locking element can be twisted between a locked position / locking preparation position, in which the release of the locking element from its locked position is positively locked, i.e., the locking element is positively fixed / locked / locked in its locked position, in particular against the release force / restoration force of the spring element, and a released position, in which the locking element is (freely) movable / displaceable between its locked position and its unlocked position. In other words, by twisting the locking element, the locking element can additionally be brought into the locked position / locking preparation position, i.e., a stable position, in which the locking element is positively fixed or fixable, and can be released therefrom. This means that the locking element is movable, preferably twistable, between the locked position and a position released from the locked position / release position.

[0007] In other words, the locking element has a first degree of freedom for displacement between its locked position and its unlocked position (e.g., by applying pressure), wherein the first degree of freedom is particularly formed by the axial mobility of the locking element. Furthermore, the locking element has a second degree of freedom for displacement between its locked ready position and its released position, wherein the second degree of freedom is particularly formed by rotation about the longitudinal axis of the locking element. Preferably, the parking lock operating system is designed such that the locking element can be rotated between its locked ready position and its released position by applying pressure, and when in the locked ready position, the locking element can be locked without pressure, i.e., can be fixed mechanically / positively.

[0008] This avoids the disadvantage that, in known parking lock operating systems, although automatic closing of the parking lock is generally guaranteed, transport states of the motor vehicle, in which the onboard electrical system is disconnected or insufficiently charged or the internal combustion engine is shut down, are not possible and the parking lock remains closed. Furthermore, the described parking lock operating system is of relatively uncomplicated design, i.e., it has a small number of parts.

[0009] It has also proven advantageous to coordinate the two hydraulic actuating cylinders so that the actuating element moves when an upper pressure value in the hydraulic medium supply line is exceeded, at which the locking element is pressed against the actuating element. This allows for reliable actuation of the locking element. The retaining contour can be defined by the outer shape of the locking element or provided by a component separate from the locking element.

[0010] The parking lock operating system can include a locking mechanism for positively locking the locking element in its locked position. In particular, the locking mechanism is designed so that the locking element can be locked only when it is in its ready-to-lock position and / or automatically locks into the unlocked position of the parking lock when the operating element is operated. In other words, the locking mechanism can be activated and deactivated by twisting the locking element. The mechanical locking mechanism can hold the locking element in its locked position against the spring force of a locking spring.

[0011] According to a particularly preferred embodiment, the locking mechanism can include a guide slide and a locking element that is rotationally and axially movable relative to the guide slide. The locking element is particularly firmly connected to the locking element. The guide slide can be firmly coupled to the locking cylinder. This has the advantage that the locking spring acting on the locking element also acts on the locking mechanism.

[0012] Furthermore, the locking element and the guide slide preferably have cooperating inclined surfaces that interact so that, when the locking element is axially displaced, the locking element rotates relative to the guide slide (about its longitudinal axis). In other words, the axial movement of the locking element is coupled to its rotation. This allows the rotation of the locking element to be controlled via the hydraulic medium supply line. This eliminates the need for a separate drive mechanism for the second degree of freedom of the locking element.

[0013] According to a particularly preferred embodiment, the locking element and the guide slide can be arranged and coordinated with the actuating cylinder and / or the locking cylinder such that the locking element rotates when the pressure value in the hydraulic medium supply line increases from a pressure value below a pressure threshold to a pressure value above the pressure threshold. This increase in pressure corresponds to an axial displacement of the locking element (and thus the locking element), so that the rotation of the locking element is coupled to its displacement, particularly into its unlocked position. In other words, the application of pressure exceeding the pressure threshold causes the locking element / locking element to rotate (from its locked ready position to its released position or vice versa).

[0014] It can be preferred that the pressure threshold corresponds to a higher pressure value, starting from which the operating element moves, or that the pressure threshold corresponds to a lower pressure value, starting from which the locking element moves. This means that the locking element and the guide slide are arranged and coordinated with the operating cylinder and / or the locking cylinder such that the locking element rotates when the pressure value in the hydraulic medium supply line increases from a pressure value below the higher pressure value to a pressure value above the higher pressure value. Alternatively, it can be advantageous if the locking element and the guide slide are arranged and coordinated with the operating cylinder and / or the locking cylinder such that the locking element rotates when the pressure value in the hydraulic medium supply line increases from a pressure value below the lower pressure value to a pressure value above the lower pressure value.

[0015] According to a preferred embodiment, the locking mechanism can be configured in the manner of an adjustment mechanism for a ballpoint pen refill. Such an adjustment mechanism is known, for example, from US Pat. No. 3,205,863 A, so that it will not be described in detail.

[0016] According to a preferred embodiment, the locking mechanism can be activated alternately hydraulically. In other words, the locking element is hydraulically rotated alternately between its release position and its locked standby position. In other words, the locking mechanism is configured so that it is activated by a (first) hydraulic operation and deactivated by a new (second) hydraulic operation. Generally speaking, the locking mechanism is a hydraulically drivable alternating locking system. The locking mechanism is similar in design to a ballpoint pen refill adjustment device, which is a mechanically drivable alternating locking system.

[0017] For simple actuation of the operating element, it is also expedient if an electrically activated retaining magnet is present, which holds the operating element in its unlocked position.

[0018] Furthermore, it is advantageous if the actuating cylinder and the locking cylinder are coordinated with one another so that, when the pressure in the hydraulic medium supply line decreases, starting from a pressure above an upper pressure value, first the hydraulic pressure in the actuating cylinder associated with the actuating element drops to a pressure below the upper pressure value (so that the actuating element is pulled toward its locked position), and subsequently the hydraulic pressure in the locking cylinder associated with the locking element drops to a pressure below a lower pressure value selected to be lower than the upper pressure value (so that the locking element is pulled toward its position in which the actuating element is released). This ensures a reliable functioning of the parking lock operating system.

[0019] In other words, the present invention relates to a hydraulic parking lock operating system, in which a normal parking function is implemented, i.e. the parking lock is automatically activated in the event of a power failure, a transport mode is implemented and can be adjusted by a simple control valve, in which transport mode the parking lock / parking lock mechanism can remain deactivated independently of the voltage and hydraulic supply, i.e. in particular also without current and without pressure.

[0020] Furthermore, the parking lock operating system can be designed such that the motor vehicle cannot be put into motion when the locking element is in its locked ready position (i.e., in transport mode). This has the advantage that, even if transport mode must first be passed through to reach the normal parking mode and the current is shut off during this passage, critical driving situations are excluded, since the vehicle cannot be put into motion during this time period and releasing the parking lock requires activation of the service brake and possibly even the parking brake.

[0021] In other words, the present invention relates to a parking lock operating system having a locking element which, for the normal parking function, has a first degree of freedom in order to automatically engage the parking lock in the event of a power failure, and a second degree of freedom in order to hold the parking lock open in a powerless and pressure-free manner for transport mode or limp home function. The locking element is locked by a ballpoint pen refill mechanism so that it is held in a stable position against the release force of a spring element. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The present invention will be explained below with the aid of the accompanying drawings.

[0023] Figure 1 A longitudinal sectional view showing the parking lock operating system, and

[0024] Figures 2 to 9 Schematic diagram showing the different positions of the parking lock operating system.

[0025] The accompanying drawings are merely schematic and serve only for understanding the present invention. Identical elements are provided with the same reference numerals. DETAILED DESCRIPTION

[0026] Figure 1 The described parking lock operating system 1 for a motor vehicle is shown in a longitudinal section. Figures 2 to 9 The schematic diagram in FIG. 1 illustrates in detail the mode of operation of the parking lock operating system 1 .

[0027] The parking lock operating system 1 includes an operating element 2. The operating element 2 of the parking lock operating system 1 is used directly to (mechanically) adjust the parking lock 3. The operating element 2 can be coupled to the parking lock 3 or is already coupled thereto. The operating element 2 can be moved between a locked position and an unlocked position. In the locked position, the parking lock 3 is activated. In the unlocked position, the parking lock 3 is inactivated.

[0028] The parking lock operating system 1 includes a locking element 4. The locking element 4 can be coupled to or is already coupled to the operating element 2. The locking element 4 is movable between a locked position and an unlocked position. In the locked position, the locking element 4 secures the operating element 2 in its unlocked position with a positive fit. In other words, the locking of the operating element 2 is active, preventing the operating element 2 from moving (or returning) to its unlocked position. In the unlocked position, the locking of the operating element 2 is inactive, allowing the operating element 2 to move between its locked and unlocked positions.

[0029] The operating element 2 is operatively connected / coupled to a hydraulic operating cylinder 5 and can be moved by it. The locking element 4 is operatively connected / coupled to a hydraulic locking cylinder 6 and can be moved by it. The operating cylinder 5 and the locking cylinder 6 are each connected at their pressure chambers to a common hydraulic medium supply line 7. This means that the operating cylinder 5 and the locking cylinder 6 are coupled via the same hydraulic medium supply line 7 of the hydraulic unit, so that the pressure chambers of the operating cylinder 5 and the locking cylinder 6 always have the same hydraulic pressure.

[0030] The operating element 2 is movable longitudinally along its axial direction. It can be moved against the return force / disengagement force / spring force of the first spring element / operating spring 8. The operating element 2 is preloaded toward its locked position by the operating spring 8. When the operating cylinder 5 is loaded with a hydraulic pressure exceeding the upper pressure value, the operating element 2 is pressed / displaced from its locked position to its unlocked position against the spring force of the operating spring 8. The locking element 4 is movable longitudinally along its axial direction (to adjust between its unlocked and locked positions). It can be moved against the return force / disengagement force / spring force of the second spring element / locking spring 9. The locking element 4 is preloaded toward its unlocked position by the locking spring 9. When the locking cylinder 6 is loaded with a hydraulic pressure exceeding the lower pressure value, the locking element 4 is pressed / displaced from its unlocked position to its locked position against the spring force of the locking spring 9. In other words, the locking element 4 is configured to secure / retain the operating element 2 in its unlocked position in a form-fitting manner, preferably for transporting the motor vehicle.

[0031] The operating cylinder 5 and the locking cylinder 6 are coordinated with one another (e.g., by dimensioning the pressure chambers and / or the operating springs 8 and locking springs 9) such that the locking element 4 is moved starting from a lower / lower pressure value in the hydraulic medium supply line 7, and the operating element 2 is moved starting from a higher / upper pressure value in the hydraulic medium supply line 7, the higher / upper pressure value being higher than the lower / lower pressure value. Thus, the operating cylinder 5 and the locking cylinder 6 are coordinated with one another such that the operating element 2 is moved only when an upper pressure value in the hydraulic medium supply line 7 is exceeded, at which the locking element 4 is preferably already pressed against the operating element 2. Simultaneously, the operating cylinder 5 and the locking cylinder 6 are coordinated with one another such that, when the pressure in the hydraulic medium supply line 7 decreases, starting from a pressure higher than the upper pressure value, the hydraulic pressure in the operating cylinder 5 first drops to a pressure lower than the upper pressure value, and then the hydraulic pressure in the locking cylinder 6 drops to a pressure lower than the lower pressure value, which is selected to be lower than the upper pressure value.

[0032] The locking element 4 can be twisted between a locked position / locked ready position and a released position. In the locked position, the release of the locking element 4 from its locked position is locked by a form fit, that is, the locking element 4 is fixed / locked / locked in its locked position by a form fit. In particular, the locking element 4 is held in a stable position against the disengagement force / reset force of the locking spring 9. In the released position, the locking element 4 can (freely) move / displace between its locked position and its unlocked position. The locking element 4 can be twisted about its longitudinal axis (to adjust between the locked position and the released position). In other words, the locking element has a first degree of freedom for adjusting between its unlocked position and its locked position and a second degree of freedom for adjusting between its locked position and its released position.

[0033] During normal driving of the motor vehicle, the operating element 2 is held in its unlocked position by a retaining magnet 10, which also serves as a stop. While the operating element 2 is held in the unlocked position by the energized retaining magnet 10, the hydraulic pressure at the operating cylinder 5 can be reduced below the upper pressure value, or the operating cylinder can be switched to a depressurized state.

[0034] The parking lock operating system 1 includes a locking mechanism for positively locking the locking element 4 in its locked position. The locking mechanism can be designed similarly to the adjustment mechanism of a ballpoint pen refill. It includes a locking element 11 and a guide slide 12. The locking element 11 is securely coupled to the locking element 4. The guide slide 12 is securely coupled to the locking cylinder 6. The positions of the locking element 11 and the guide slide 12 are coordinated so that when the locking element 4 is fully extended / reaches its locked position / exceeds the upper pressure value of the hydraulic medium supply line 7, the locking element 11 is guided past the guide slide 12. The locking element 11 and the guide slide 12 have matching inclined surfaces designed so that the guidance, i.e., the application of a force in the axial direction, generates a torsional force / torque, i.e., a rotation about the longitudinal axis of the locking element 4. In other words, when the locking element 11 is axially guided past the guide slide 12, the locking element 4 twists. This also means that each time the locking element 11 is guided axially past the guide slide 12 , the securing element 4 is moved from its locking position into its release position or from its release position into its locking position.

[0035] The positions of the locking element 11 and the guide slide 12 interact so that when the locking element 4 is rotated into its locked position, the locking element 11 cannot be guided past the guide slide 12, and the locking element 4 cannot be moved back into the unlocked position. The locking element 4 is locked in the locked position. The locking element 4 (even in the unpressurized state) is held in a stable position against the spring force of the locking spring 9. To release the locking mechanism, the locking element 4 is fully moved out again / exceeds the upper pressure value in the hydraulic medium supply line 7, whereby the locking element 11 is axially guided past the guide slide 12, and the locking element 4 is rotated from its locked position into the unlocked position.

[0036] The locking element 4 is realized as a pin and is movable transversely to the operating element 2. At its end 13 facing the operating element 2, the locking element 4 can positively engage with a recess of the operating element 2, in particular serving as a positive-fit element 14.

[0037] The working mode of the parking lock operating system 1 will be explained below based on different positions of the parking lock operating system 1 .

[0038] exist Figure 2 The figure shows the basic position of the parking lock operating system 1 with no current and no pressure. The hydraulic pressure is lower than the upper pressure value, so that the spring force of the operating spring 8 holds the operating element 2 in its locked position / the operating element 2 is moved in. The parking lock 3 is active. The hydraulic pressure is lower than the lower pressure value, so that the spring force of the locking spring 9 holds the locking element 4 in its unlocked position / the locking element 4 is moved in. The locking element 4 / the blocking element is in its released position.

[0039] exist Figure 3 , the following position of the parking lock operating system 1 without power is shown in FIG. , in which the hydraulic pressure is increased above the lower pressure value. The hydraulic pressure is less than the upper pressure value, so that the spring force of the operating spring 8 continues to hold the operating element 2 in its locked position. The parking lock 3 is activated. The hydraulic pressure is greater than the lower pressure value, but less than the upper pressure value, so that the locking element 4 moves outward against the spring force of the locking spring 9 until the end 13 rests on the operating element 2 (or the outer contour of the operating element 2). The locking element 4 is in an intermediate position because the contact of the locking element 4 on the operating element 2 prevents engagement with the form-fitting element 14, and despite the pressure application, the locking element 4 cannot be fully moved out to its locked position. The locking element 4 / locking element remains in the released position because the locking element 11 has not yet been guided past the guide slide 12.

[0040] exist Figure 4, the following position of the parking lock operating system 1 without power is shown in FIG. , in which the hydraulic pressure is increased to above the upper pressure value. The hydraulic pressure is greater than the upper pressure value, so that the operating element 2 is moved out against the spring force of the operating spring 8 and pressed into its unlocked position. The parking lock 3 is inoperative. The operating element 2 is now in the unlocked position, which allows the locking element 4 to be moved further out against the spring force of the locking spring 9, engage in the form-fitting element 14, and assume its locked position. By moving the locking element 4 from the intermediate position into the locked position, i.e., by guiding the locking element 11 past the guide slide 12 (into the fully extended position of the locking element 4), the locking element 4 / locking element 11 is twisted and switched into its locked position.

[0041] exist Figure 5 The following position of the parking lock operating system 1, with no current and no pressure, is shown in FIG. In this position, the hydraulic pressure has dropped below the lower pressure value. Although the hydraulic pressure is lower than the upper and lower pressure values, the operating element 2 is held in its unlocked position by the locking element 4, and the locking element 4 is held in its locked position by the locked locking element 11 (which rests on the guide slide 12). Due to the activated locking mechanism, the locking element 4 cannot be moved back from its locked position against the spring force of the locking spring 9. The parking lock 3 remains inoperative.

[0042] exist Figure 6 The following position of the parking lock operating system 1 with no current is shown in FIG. In this position, the hydraulic pressure is increased above a lower pressure value. The operating element 2 is still held in its unlocked position by the locking element 4. The hydraulic pressure is greater than the lower pressure value, so that the locking element 4 moves further outward against the spring force of the locking spring 9 until it abuts against the operating element 2 (or the form-fitting element 14 of the operating element 2). When the locking element 4 is completely extended, i.e., when the locking element 11 is guided past the guide slide 12, the locking element 4 / locking element 11 is twisted and switched to its released position. In the released position, the locking element 4 can be moved back to its unlocked position when the pressure is reduced. The parking lock 3 remains inoperative.

[0043] exist Figure 7The following position of the parking lock operating system 1 is shown in the figure, in which the hydraulic pressure is increased to above the upper pressure value. The operating element 2 is further extended against the spring force of the operating spring 8 and is pressed onto the retaining magnet 10. The retaining magnet 10 also serves as an axial stop for the operating element 2. The parking lock 3 is inoperative. The retaining magnet is (still) switched to a de-energized state. If the retaining magnet is energized, it holds the operating element 2 in its unlocked position. The hydraulic pressure is greater than the lower pressure value, so that the locking element 4 remains in its locked position. The locking element 4 / locking element 11 remains in its released position.

[0044] exist Figure 8 Figure 1 shows a position of the parking lock operating system 1, which is energized but pressure-free. Although the hydraulic pressure is lower than the upper pressure value, the holding magnet 10 is energized, so that the operating element 2 is held in its unlocked position by the holding magnet 10. The parking lock 3 is inoperative. The hydraulic pressure is lower than the lower pressure value, so the spring force of the locking spring 9 presses the locking element 4 into its unlocked position. The locking element 4 / locking element 11 remains in its released position.

[0045] exist Figure 9 The figure shows the position of the parking lock operating system 1 with no current and no pressure. The hydraulic pressure is lower than the upper pressure value, so the spring force of the operating spring 8 presses the operating element 2 into its locked position. The parking lock 3 is activated. The hydraulic pressure is lower than the lower pressure value, so the spring force of the locking spring 9 presses the locking element 4 into its unlocked position. The locking element 4 / locking element 11 remains in its released position. Therefore, in the event of a power outage or by disconnecting the retaining magnet 10, the parking lock 3 can be engaged for normal closing.

[0046] Description of Reference Numerals

[0047] 1 Parking lock operating system

[0048] 2 Operating elements

[0049] 3 Parking lock

[0050] 4 Locking elements

[0051] 5 Operating cylinder

[0052] 6 Locking cylinder

[0053] 7 Hydraulic medium delivery pipeline

[0054] 8 Operating spring

[0055] 9 Locking spring

[0056] 10 Retaining magnet

[0057] 11 Locking element

[0058] 12 Guide Slider

[0059] 13 end

[0060] 14 Form-fitting elements

Claims

1. A parking lock operating system (1) for a motor vehicle, comprising: an operating element (2) that can be coupled or is coupled to a parking lock (3), the operating element being movable between a locked position and an unlocked position, in which the parking lock (3) is active and in which the parking lock (3) is inactive; and a locking element (4), the locking element being movable between a locked position and an unlocked position, in which the locking element (4) fixes the operating element (2) in its unlocked position in a form-fitting manner and in which the operating element (2) is movable in its locked position. The invention relates to a method for moving a locking element (4) between a locking position and an unlocking position, wherein the operating element (2) is effectively connected to a hydraulic operating cylinder (5), and the locking element (4) is effectively connected to a hydraulic locking cylinder (6), and the operating cylinder (5) and the locking cylinder (6) are also connected to a common hydraulic medium supply line (7) on the pressure chamber side and are coordinated with each other so that the locking element (4) moves from a lower pressure value existing in the hydraulic medium supply line (7) and the operating element (2) moves from a higher pressure value existing in the hydraulic medium supply line (7), the higher pressure value being higher than the lower pressure value, characterized in that The locking element (4) is displaceable between a locking preparation position, in which the release of the locking element (4) from its locking position is blocked in a form-fitting manner, and a release position, in which the locking element (4) is movable between its unlocking position and its locking position.

2. The parking lock operating system (1) according to claim 1, characterized in that The locking element (4) is prepared for rotation between the locking preparation position and the release position, and / or the parking lock operating system (1) has a locking mechanism for positively retaining the locking element (4) in its locking position.

3. The parking lock operating system (1) according to claim 2, characterized in that: The locking mechanism comprises a guide slide (12) and a locking element (11) which is rotatable and axially displaceable relative to the guide slide (12), wherein the locking element (11) is firmly connected to the locking element (4).

4. The parking lock operating system (1) according to claim 3, characterized in that The locking element (11) and the guide slide (12) have matching inclined surfaces, which interact with each other so that when the locking element (11) moves axially, the locking element (11) is twisted relative to the guide slide (12).

5. The parking lock operating system (1) according to claim 4, characterized in that: The blocking element (11) and the guide slide (12) are arranged and coordinated with the actuating cylinder (5) and / or the locking cylinder (6) such that the blocking element (11) rotates when the pressure value prevailing in the hydraulic medium supply line (7) increases from a pressure value below a pressure threshold to a pressure value above a pressure threshold.

6. The parking lock operating system (1) according to claim 5, characterized in that: The pressure threshold value corresponds to a higher pressure value, starting from which the operating element (2) is moved, or a lower pressure value, starting from which the locking element (4) is moved.

7. The parking lock operating system (1) according to any one of claims 2 to 6, characterized in that: The locking mechanism is a mechanically actuatable alternating locking system.

8. The parking lock operating system (1) according to any one of claims 2 to 6, characterized in that: The locking mechanism can be activated hydraulically in an alternating manner.

9. The parking lock operating system (1) according to any one of claims 2 to 6, characterized in that: The locking mechanism is arranged in the locking cylinder (6).

10. The parking lock operating system (1) according to any one of claims 1 to 6, characterized in that: The parking lock operating system (1) has an electrically operated holding magnet (10) which holds the operating element (2) in its unlocked position.

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