Parking lock mechanism and vehicle

Abstract

Parking locking mechanism (1) for parking locking in a vehicle (100), comprising: an actuator (20) which is operatively connected to a plunger (14) which is movable along a stroke direction (3); and a pawl (19), which is rotatably mounted about a pawl axis (22), is coupled to the plunger (14) and is designed to engage in a parking lock wheel of the vehicle (100), wherein the locking pawl (19) is extended in the retracted state of the plunger (14) and is retracted in the extended state of the plunger (14) and further comprising a bistable locking mechanism (21), wherein the actuator (20) has a movable pin (43) which is connected to the locking mechanism (21) and wherein the locking mechanism (21) comprises the plunger (14) and is configured to convert the stroke movement of the pin (43) into a stroke movement of the plunger (14) and to lock the plunger (14) in a retracted position and in an extended position in the stroke direction (3), wherein the locking mechanism (21) has a ball (13) wherein the ball (13) is arranged in the stroke direction (3) between the plunger (14) and the feed element (12) and converts a movement of the feed element (12) into a rotation-free stroke movement of the plunger (14).

Description

[0001] The invention relates to a parking lock mechanism for locking the parking position in a vehicle and to a vehicle comprising the parking lock mechanism.

[0002] DE 10 2020 203 033 A1 discloses a conventional electromechanical actuator of a parking lock system with a ratchet wheel (also called a "parking lock wheel") and a pawl. The parking lock system includes an adjustment mechanism that functions like the ballpoint pen mechanism of a push-button ballpoint pen. This adjustment mechanism forms a bistable locking mechanism that locks a bolt in both an extended and a retracted position, with the adjustment mechanism moving translationally and rotationally between these positions, as in a ballpoint pen. The bolt, moved and locked by the adjustment mechanism, acts together with a toggle lever on a pawl movable about a pawl axis, thereby moving and locking the pawl between an engaging and a disengaging position (see in particular...).Fig. 5.1 and 5.2 of the aforementioned publication).

[0003] DE 10 2017 202 443 A1 discloses a parking lock pawl for a transmission parking lock, comprising a pawl that can be moved into a locking position for locking a parking lock wheel by means of an actuating element. The pawl has a recess for guiding the actuating element, which is movable within the recess to selectively move the pawl either into the locking position or into a release position.

[0004] DE 10 2013 008 604 A1 discloses a parking locking device for a motor vehicle transmission, comprising a movable locking device which can be moved either into a locking position in which the locking device is coupled to the transmission in such a way that rotation of the transmission is prevented, and into a release position in which the locking device is decoupled from the transmission and rotation of the transmission is allowed, and comprising a drive device for moving the locking device between the locking position and the release position, and comprising an electromagnet which is designed in such a way that, when energized, it fixes the locking device in the release position.

[0005] US Patent 2021 / 0 396 312 A1 discloses a parking locking device for a vehicle transmission. The device comprises a wheel, a pawl for locking the wheel against rotation, and an actuating unit arranged to move the pawl relative to the wheel. The pawl has a locked position in which the pawl and wheel are engaged, and an unlocked position in which the pawl and wheel are disengaged. The pawl and the actuating unit are mechanically connected by a pin and slot mechanism, which has a guide slot and a guide pin received by the guide slot.

[0006] AT 525 302 A1 discloses a transmission lock, preferably for parking assistance, for a transmission comprising at least one shift drum and at least one ratchet wheel with teeth, wherein the transmission lock has a rotatably mounted pawl, wherein the pawl engages in the teeth of the at least one ratchet wheel in a locked position and is disengaged from the at least one ratchet wheel in a freewheeling position, and wherein the pawl is biased by a spring element in the direction of the locked position, wherein an engagement element is connected to the pawl, wherein the engagement element holds the pawl in the freewheeling position by direct interaction with the shift drum against the action of the spring element when the shift drum assumes a rotational position in a freewheeling rotation range, and wherein the pawl can be released from the shift drum into a locked position by means of the engagement element.when the shift drum assumes a rotational position within a locking rotation range.

[0007] JP 2018-59562A discloses a parking lock that can be downsized compared to a conventional lock, even when the lock is of the accumulated power reduction type and an actuator is used. A cam mechanism comprises a ring, a movable iron core, and a cylindrical projecting section. The ring includes a radially projecting projection. The cylindrical projection has a long slot that engages with the projection to prevent rotation of the ring. The ring and the movable iron core are provided with an iron core cam and a ring cam, respectively.When the ring is pushed through the movable iron core, the ring is rotated by the iron core cam and locked in a short slot, and when the movable iron core pushes the ring again in a state where the ring is locked with the cylindrical protruding section, the ring is rotated again so that the locking of the ring with the cylindrical protruding section is released and the cam is in a position where the locking of the packing is released.

[0008] Furthermore, conventional parking lock systems are known in which the bistable locking mechanism is achieved using permanent magnets, for example by means of BLDC (brushless DC motor).

[0009] These parking lock systems, however, have the disadvantage that the bolt, in its extended position, engages the pawl via the toggle lever. With the aforementioned adjustment mechanism, as with the ballpoint pen, the bolt must be overextended in a phase between the retracted position and before reaching the locked extended position ("actuating position"), meaning it must be extended beyond the fully extended position (also called "overcoming the dead center"). This, together with the toggle lever, causes the pawl to be pressed into the ratchet wheel with increased pressure and engagement depth, which can damage the ratchet wheel and / or the pawl and increase wear.

[0010] The object of the invention is to overcome the aforementioned disadvantages of conventional parking lock systems and mechanisms. In particular, an object of the invention is to provide a parking lock mechanism that exhibits low wear and causes less damage to the parking lock wheel. Furthermore, it is an object of the invention to provide a vehicle with these advantages.

[0011] This problem is solved by the features of the dependent claims. The sub-claims describe advantageous embodiments of the invention.

[0012] This problem is solved in particular by the subject matter of claim 1. A parking lock mechanism for locking a vehicle comprises an actuator and a pawl. The actuator is operatively connected to a plunger movable along a stroke direction. The pawl is rotatably mounted about a pawl axis, coupled to the plunger, and configured to engage a parking lock wheel of the vehicle. The pawl is extended when the plunger is retracted and retracted when the plunger is extended. In the parking lock mechanism with a bistable locking mechanism, the actuator has a movable pin connected to the locking mechanism. The locking mechanism includes the aforementioned plunger. Advantageously, the aforementioned operative connection between the actuator and the plunger is formed by the locking mechanism.The locking mechanism is designed to convert the stroke of the pin into a stroke of the plunger and to lock the plunger in both the retracted and extended positions in the stroke direction. This locking mechanism eliminates the need for costly permanent magnets, which also require more complex control electronics. Instead, the actuator can consist of a simple magnetic coil and a movable armature, which can be moved back and forth in the stroke direction by means of the magnetic coil. A further advantage is that the actuator is energized for each of the two states (engaged and disengaged) or for the actual state change, and no continuous power supply is required. The states are maintained by the bistable locking mechanism without requiring any further power supply beyond the state change itself.The locking mechanism incorporates a ball, which is positioned in the stroke direction between the plunger and the feed element and converts a movement of the feed element into a non-rotational stroke movement of the plunger. This transforms a rotational movement of the feed element (the torque described above), which enables the mechanism to lock in the various positions, into a pure stroke movement of the plunger, so that overall the stroke movement of the pin is converted into a stroke movement of the plunger.

[0013] In other words, the pawl is engaged when the plunger is retracted and free, i.e., not engaging, the parking lock wheel when the plunger is extended. For example, the retracted plunger corresponds to a ground state and / or de-energized state of the actuator, while the extended plunger corresponds to an activated and / or energized state of the actuator, so that the pawl is engaged in the actuator's ground state.

[0014] This prevents the pawl from engaging in a potentially damaging way. In particular, when overcoming a dead center position, the invention prevents the pawl from being pressed into the parking lock wheel with excessive pressure and / or travel.

[0015] In an advantageous embodiment, the pawl is retracted and free in the stroke direction when the plunger is at its maximum extension. In other words, the pawl does not engage the parking pawl wheel while the plunger is at its maximum extension. Preferably, the pawl is at its maximum extension, meaning it is at its maximum distance from the engaging position or rotated at its maximum distance from the parking pawl wheel.

[0016] Furthermore, the pawl advantageously has an elongated hole in which a cylindrical pin connected to the plunger is movably received.

[0017] Advantageously, the cylindrical pin projects essentially perpendicular to the stroke direction through the elongated hole, with the cylindrical pin being guided along a longitudinal extension of the elongated hole.

[0018] Advantageously, the longitudinal extent of the elongated hole has an angle with respect to the stroke direction that is neither 0° nor 90°. Preferably, the aforementioned angle is between 20° and 70°, more preferably between 30° and 60°, and even more preferably between 40° and 50°. Preferably, the angle is 45°.

[0019] The elongated hole advantageously serves as a guide rail for the cylindrical pin. The elongated hole and the cylindrical pin form a simple and low-wear connection between the pawl and the actuator.

[0020] In an advantageous embodiment, the pawl comprises a pawl head configured to engage the parking lock wheel and a pawl body. The pawl body has two legs connected to each other in an L-shape. The pawl head is located at one end of the first of the two legs. Advantageously, the distance between the pawl head and the parking lock wheel is maximized when the pawl is fully retracted. This pawl body design results in a pawl geometry that is easy to manufacture, cost-effective, and has low wear.

[0021] Advantageously, the pawl body has exactly two legs as explained above.

[0022] It is further advantageous if the angle between the two legs is equal to or greater than 90°. The angle is advantageously defined as the angle between the essential longitudinal axes of the legs, as can be seen from the following explanations. The angle is advantageously between 90° and 120°, preferably between 110° and 115°. The angle is advantageously adjusted to the distance between the parking lock mechanism or pawl and the parking lock wheel of the vehicle. For example, in some embodiments, the angle described above may also be equal to or less than 90°. By adjusting the angle as described above, a contact pressure of the pawl against the pawl wheel is advantageously set.Due to the interaction with the other features of the invention, this angle does not need to be adapted to the dead-point overcoming described above, since this takes place in the retracted state of the pawl.

[0023] Preferably, the pawl axis of the pawl is arranged at a junction of the two legs. The junction is advantageously defined as a region of the pawl body where projections of the legs along their longitudinal axes overlap.

[0024] In other words, a through-hole for the pawl shaft is advantageously provided at the connection point. This makes it particularly easy to adjust the contact pressure or the stroke / rotation distance of the pawl, since the angle essentially corresponds to this stroke / rotation distance of the pawl.

[0025] In an advantageous embodiment, the first leg has a concave side surface that extends from the pawl axis to the pawl head. This results in a particularly compact design of the pawl and thus of the parking lock mechanism, since the pawl can be positioned closer to the parking lock wheel by means of its concave side surface.

[0026] The parking lock mechanism advantageously features a bistable locking mechanism. In a preferred embodiment, the locking mechanism includes a permanent magnet, for example a BLDC (brushless DC motor). This is advantageously either part of the actuator or constitutes the actuator itself.

[0027] Advantageously, the locking mechanism comprises a pressure element connected to the pin, a feed element connected to the plunger, and an inner sleeve. The pressure element and the feed element are movably mounted within the inner sleeve and relative to it. Furthermore, the feed element is pre-tensioned and, by the pre-tensioning force, is displaceable between at least two positions in the stroke direction and rotatable in a circumferential direction of the inner sleeve. A first of these positions corresponds to a state extended in the stroke direction, and a second of these positions corresponds to a state retracted in the stroke direction of the feed element.

[0028] Preferably, the inner sleeve has at least one radial projection on its inner circumference. A contour of the pressure element has first chamfered sections and at least one groove extending in the stroke direction, wherein the projection is arranged in the groove of the pressure element so that the pressure element is rotationally fixed and movable in the stroke within the inner sleeve. A contour of the feed element has second chamfered sections which form stop surfaces in the stroke direction and convert the preload force into a torque of the feed element. The aforementioned feed element contour also has projections and grooves extending in the stroke direction. In the extended state of the feed element, the projection rests against a second chamfered section in the stroke direction and against the projection of the feed element contour in the circumferential direction. In the retracted state of the feed element, the projection is arranged in the groove of the feed element contour.

[0029] Advantageously, the inner sleeve has an internal circumferential stop surface, which forms a lower stop for the pressure element in the stroke direction. The locking mechanism includes a first compression spring, which is arranged in the stroke direction between a flange of the pressure element and the stop surface of the inner sleeve, and which biases the pressure element against the pin. This allows the pressure element to be biased back to its initial state in the stroke direction, or to be returned to this state, without requiring a pulling force or movement from the actuator, thus further simplifying the control and design of the actuator.

[0030] In another embodiment, the parking lock mechanism has an outer sleeve that houses the actuator and the locking mechanism, and an intermediate sleeve arranged radially between the outer sleeve and the inner sleeve. The intermediate sleeve is rigidly connected to the inner sleeve, and both the intermediate sleeve and the inner sleeve are movable relative to and within the outer sleeve in the stroke direction.

[0031] The intermediate sleeve advantageously encloses an end of the feed element opposite the pressure element (in the stroke direction). Preferably, the intermediate sleeve encloses a flange of the plunger.

[0032] Preferably, the parking lock mechanism has a second compression spring which is arranged radially between the intermediate sleeve and the outer sleeve and preloads the intermediate sleeve and the inner sleeve (together) against the outer sleeve.

[0033] In an advantageous embodiment, in which the intermediate sleeve encloses the feed element and / or the flange of the plunger as described above, and the parking lock mechanism includes the second compression spring, the plunger and / or the feed element, particularly together with the ball, are pre-tensioned in the stroke direction relative to the pressure element. This results in a particularly simple, low-wear, and secure locking mechanism.

[0034] The invention also relates to a vehicle, in particular a motor vehicle, comprising the parking lock mechanism according to one of the previous embodiments and a parking lock wheel.

[0035] Further details, advantages and features of the present invention will become apparent from the following description of exemplary embodiments with reference to the drawing. It shows: Fig. 1 a schematic sectional view of a parking lock mechanism according to an embodiment of the present invention; Fig. 2 a schematic sectional view of the parking lock mechanism according to the embodiment of the present invention; Fig. 3 a perspective view of the parking lock mechanism according to the embodiment of the present invention in the unlocked state; Fig. 4 a perspective view of the parking lock mechanism according to the embodiment of the present invention in the locked state; Fig. 5 a perspective detail view of an inner sleeve of the parking lock mechanism according to the embodiment of the present invention; and Fig. 6 a schematic view of a vehicle according to the present invention.

[0036] First, the basic structure of a parking lock mechanism for locking the parking position in a vehicle according to an embodiment of the present invention will be described using the following examples: Fig. 1 explained, where the Fig. Figure 1 shows a schematic sectional view of the parking lock mechanism according to the embodiment of the present invention.

[0037] The parking lock mechanism 1 comprises an actuator 20. The actuator 20 includes a yoke disk 2, a coil former 5 with a winding 6, an armature 7, and a pole core 8. The armature 7 is movably mounted by energizing the winding 6 along a stroke 3 to and from the pole core 8. The actuator 20 also includes a housing 4, which accommodates the yoke disk 2, the armature 7, the pole core 8, and the coil former 5.

[0038] The actuator 20 is operatively connected to a plunger 14 which is movable along the stroke direction 3. In other words, a stroke movement of the actuator 20, more precisely of the armature 7, causes a stroke movement of the plunger 14. This will be explained below with reference to Fig. 1 and Fig. 2 explained.

[0039] The parking lock mechanism 1 also has a pawl 19, which is rotatably mounted about a pawl axis 22. The pawl 19 is coupled to the plunger 14 and is positioned in a parking lock wheel (not shown) of the vehicle (see Fig. 6) to intervene.

[0040] Here, the locking pawl is 19, as particularly relevant with regard to the Fig. 3 and Fig. 4 is explained, in the retracted state of the plunger 14 extended and in the extended state of the plunger 14 retracted.

[0041] This allows a maximum stroke / rotation distance of the pawl 19 to be achieved through a basic position (highest possible position in Fig. 1) of the anchor 7 is defined and limited so that excessive pressure of the pawl 19 on the parking lock wheel is avoided.

[0042] This is in Fig. 3 and Fig. 4 shown, where in Fig. Figure 3 shows a perspective view of the parking lock mechanism 1 according to the embodiment of the present invention in the unlocked state. Fig. Figure 3 shows in particular a maximally extended state of the plunger 14, in which the pawl 19 is free (not engaging in the parking lock wheel).

[0043] This is in Fig. Figure 4 shows a perspective view of the parking lock mechanism 1 according to the embodiment of the present invention in the locked state. Fig. Figure 4 shows in particular a maximally retracted state of the plunger 14, in which the pawl 19 is locked (engaging in the parking lock wheel).

[0044] The pawl 19 has an elongated hole 23 in which a cylindrical pin 18, connected to the plunger 14, is movably received. The cylindrical pin 18 projects through the elongated hole 23 essentially perpendicular to the stroke direction 3. The cylindrical pin 18 is, as can be seen in particular from the Fig. 1, Fig. 3 and Fig. 4 can be seen, guided along a longitudinal extension 24 of the elongated hole 23.

[0045] The lifting / rotating movement of the pawl 19 can be limited by a maximum stroke distance of the actuator 20, in particular the armature 7 of the actuator 20, and / or by the longitudinal extent 24 of the elongated hole 23.

[0046] The pawl 19 also has a pawl head 25, which is designed to engage with the parking lock wheel, and a pawl body 26.

[0047] The pawl body 26 has two legs 27, 28 (first leg 27, second leg 28) connected to each other in an L-shape. The pawl head 25 is arranged at one end of the first leg 27.

[0048] Here, "L-shaped" does not necessarily mean a 90° connection. An angle 29 between the two legs 27, 28 is advantageously greater than or equal to 90°, preferably approximately 110°. The angle 29 is advantageously defined as the angle between the essential longitudinal axes 30 of the legs 27, 28, as shown in the figure. Fig. 1 is evident.

[0049] The pawl axis 22 is arranged at a connection area 31 of the two legs 27, 28. The connection area 31 is advantageously defined as a region of the pawl body 26 where projections of the legs 27, 28 (projections of their outer boundaries) overlap along their longitudinal axes 30. In the present embodiment, the two legs 27, 28 are formed or connected to each other as a single piece. In particular, the two legs 27, 28 are formed monolithically.

[0050] Furthermore, in Fig. 1 can be seen that the first leg 27 has a concave side surface 32, which extends from the pawl axis 22 to the locking pawl head 25.

[0051] This means that the pawl 19 is rotatably mounted about the pawl axis 22 in such a way that a lifting movement of the plunger 14 causes a rotary / lifting movement of the pawl head 25 to engage in the parking lock wheel.

[0052] The parking lock mechanism 1 also shows, as can be seen from the Fig. 1, the Fig. 2 and the Fig. As can be seen in Figure 5, a bistable locking mechanism 21 is incorporated. The locking mechanism 21 allows the plunger 14 or the pawl 19 to be locked in various positions, in particular the unlocked position of the pawl 19 (see Figure 5). Fig. 3) and the locked position of the locking pawl 19 (see Fig. 4).

[0053] As mentioned above, the actuator 20 is operatively connected to the plunger 14. In the present embodiment, the actuator 20 has a movable pin 43 for this purpose, which is connected to the locking mechanism 21. The locking mechanism 21 includes the plunger 14 and is configured to convert the stroke movement of the pin 43, which is effected by the actuator 20, into a stroke movement of the plunger 14 and to lock the plunger 14 in the retracted position ( Fig. 4) and in the extended position ( Fig. 3) to lock in the direction of stroke 3.

[0054] The locking mechanism 21 comprises a pressure element 11 connected to the pin 43, a feed element 12 connected to the plunger 14, and an inner sleeve 9. The pressure element 11 and the feed element 12 are movably mounted in the inner sleeve 9 and relative to it in the stroke direction 3.

[0055] Furthermore, the feed element 12 is pre-tensioned and, by the pre-tensioning force, displaceable between at least two positions in the stroke direction 3 and rotatable in a circumferential direction 33 of the inner sleeve 9. A first position of these positions corresponds to a state extended in the stroke direction 3, and a second position of these positions corresponds to a state retracted in the stroke direction 3 of the feed element 12.

[0056] Here, the inner sleeve 9 has an internal circumferential stop surface 34, which forms a lower stop in the stroke direction 3 for the pressure element 11 (see Fig. 1) The locking mechanism 21 has a first compression spring 16 which is arranged in the stroke direction 3 between a flange 35 of the pressure element 11 and the stop surface 34 of the inner sleeve 9 and biases the pressure element 11 against the pin 43.

[0057] In the present embodiment, the inner sleeve 9, as shown in Fig. 5 evident, at least a radial elevation 36 on its inner circumference, wherein Fig. Figure 5 shows a schematic detail and section view of the inner sleeve 9.

[0058] In the Fig. 2 The inner sleeve 9 has been omitted for the sake of simplicity and explanation.

[0059] With reference to Fig. 2, has a contour of the pressure element 11, first chamfered sections 37 and grooves 38 extending in the stroke direction 3, wherein the projections 36 of the inner sleeve 9 are arranged in the grooves 38 of the pressure element 11, so that the pressure element 11 is arranged in the inner sleeve 9 in a rotationally fixed and stroke-movable manner.

[0060] One contour of the feed element 12 has second chamfered sections 39, which form stop surfaces in the stroke direction 3 and convert the preload force into a torque of the feed element 12. The aforementioned contour of the feed element 12 also has projections 40 and grooves 41 extending in the stroke direction 3. In the extended state (which is in Fig. In the state shown in Figure 2 of the feed element 12, the projection 36 of the inner sleeve 9 rests against one of the second chamfered sections 39 in the stroke direction 3 and against the projection 40 of the feed element contour in the circumferential direction 33. In the retracted state of the feed element 12, the projection 36 is arranged in the groove 41 of the feed element 12.

[0061] To move the feed element 12 between the retracted state, in which the projection 36 is arranged in the groove 41 of the feed element 12, and the extended state, in which the projection 36 rests on the chamfered section 39 (its highest point, located in the circumferential direction 33 next to the groove 41 and furthest from the projection 40), the feed element 12 must be pushed in the stroke direction 3 until the projection 36 can rest on the chamfered section 39. This is also called "overcoming the dead center" or "overextension," since in this phase the feed element 12 and the plunger 14 are extended further than the stable, locked extended state (free state of the pawl 19).

[0062] The parking lock mechanism 1 according to the present embodiment has the advantage that the pawl 19 is in the retracted position during this overextension. In other words, the pawl 19 is retracted and free at this maximum extension of the plunger 14 in the stroke direction 3, thus preventing excessive contact pressure on the parking lock wheel.

[0063] The locking mechanism 21 also includes a ball 13, which is arranged in the stroke direction 3 between the plunger 14 and the feed element 12 and converts a movement of the feed element 12 into a non-rotational stroke movement of the plunger 14. This converts a rotational movement of the feed element 12, which enables the locking of the mechanism 21 in the various positions, into a pure stroke movement of the plunger 14, so that overall the stroke movement of the pin 43 is converted into a stroke movement of the plunger 14.

[0064] The parking lock mechanism 1 has an outer sleeve 10, which jointly accommodates the actuator 20 and the locking mechanism 21, and an intermediate sleeve 15, which is arranged radially between the outer sleeve 10 and the inner sleeve 9. The intermediate sleeve 15 is fixedly connected to the inner sleeve 9, wherein the intermediate sleeve 15 and the inner sleeve 9 are jointly movable relative to and within the outer sleeve 10 in the stroke direction 3.

[0065] The intermediate sleeve 15 encloses an end of the feed element 12 opposite the pressure element 11 (in stroke direction 3). The intermediate sleeve 15 encloses a flange 42 of the plunger 14.

[0066] The parking lock mechanism 1 has a second compression spring 17, which is arranged radially between the intermediate sleeve 15 and the outer sleeve 10 and biases the intermediate sleeve 15 and the inner sleeve 9 (together) against the outer sleeve 10. This biases the plunger 14 and the feed element 12, in particular together with the ball 13, in the stroke direction 3 towards the pressure element 11.

[0067] This design of the parking lock mechanism 1 prevents potentially damaging engagement of the pawl 19. In particular, when overcoming the dead center / overextension, the invention prevents the pawl 19 from being pressed into the parking lock wheel with excessive pressure and / or stroke. Furthermore, this design has the advantage that the actuator 20 is only energized during the change of state between retracted and extended. Since these states are maintained by the locking mechanism 21, the actuator 20 does not need to be continuously energized.

[0068] Fig. Figure 6 shows a schematic view of a vehicle 100 according to the present invention. The vehicle 100 has the parking lock mechanism 1 according to the previous embodiment as well as a parking lock wheel (not shown).

[0069] In addition to the above written description of the invention, explicit reference is hereby made to the graphic representation of the invention in the figures for its supplementary disclosure. Reference symbol list 1 Parking lock mechanism 2 Yoke disc 3. Lifting direction 4 cases 5 coil formers 6 windings 7 anchors 8 pole core 9 inner sleeve 10 Outer sleeve 11 Pressure element 12 Feed element 13 balls 14 pestles 15 Intermediate sleeve 16 first compression spring 17 second compression spring 18 Cylinder pin 19 Locking pawl 20 Actuator 21 Locking mechanism 22 pawl axis 23 Slotted Hole 24 Longitudinal extent of the elongated hole 25 pawl head 26 pawl bodies 27 first thigh 28 second thigh 29 angles 30 longitudinal axes 31 Connection area 32 concave side surface 33 Circumferential direction 34 Stop surface 35 Flange (of pressure element 11) 36 radial elevation 37 first beveled sections 38 Groove (of the pressure element 11) 39 second beveled sections 40 lead 41 Groove (of the feed element 12) 42 flange 43 pens 100 vehicles

Claims

[1] Parking locking mechanism (1) for parking in a vehicle (100), comprising: an actuator (20) which is operatively connected to a plunger (14) which is movable along a stroke direction (3); and a pawl (19), which is rotatably mounted about a pawl axis (22), is coupled to the plunger (14) and is designed to engage in a parking lock wheel of the vehicle (100), wherein the locking pawl (19) is extended in the retracted state of the plunger (14) and is retracted in the extended state of the plunger (14) and further comprising a bistable locking mechanism (21), wherein the actuator (20) has a movable pin (43) which is connected to the locking mechanism (21) and wherein the locking mechanism (21) comprises the plunger (14) and is configured to convert the stroke movement of the pin (43) into a stroke movement of the plunger (14) and to lock the plunger (14) in a retracted position and in an extended position in the stroke direction (3), wherein the locking mechanism (21) has a ball (13) wherein the ball (13) is arranged in the stroke direction (3) between the plunger (14) and the feed element (12) and converts a movement of the feed element (12) into a rotation-free stroke movement of the plunger (14). [2] Parking locking mechanism (1) according to claim 1, wherein the locking pawl (19) is retracted and free when the plunger (14) is at its maximum extension in the direction of travel (3). [3] Parking lock mechanism (1) according to claim 1 or 2, wherein the locking pawl (19) has an elongated hole (23) in which a cylindrical pin (18) connected to the plunger (14) is movably received. [4] Parking lock mechanism (1) according to claim 3, wherein the cylindrical pin (18) projects substantially perpendicular to the stroke direction (3) through the elongated hole (23) of the pawl (19) and is guided along a longitudinal extent of the elongated hole (24). [5] Parking lock mechanism (1) according to one of the preceding claims, wherein the pawl (19) has a pawl head (25) which is configured to engage with the parking lock wheel, and a pawl body (26) which has two legs (27, 28) connected to each other in an L-shape, and wherein the pawl head (25) is arranged at one end of a first leg (27) of the two legs (27, 28). [6] Parking lock mechanism (1) according to claim 5, wherein an angle (29) between the two legs (27, 28) is equal to or greater than 90°. [7] Parking lock mechanism (1) according to claim 5 or claim 6, wherein the pawl axis (22) of the locking pawl (19) is arranged at a connecting area (31) of the two legs (27, 28). [8] Parking lock mechanism (1) according to claim 7, wherein the first leg (27) has a concave side surface (32) which extends from the pawl axis (22) to the locking pawl head (25). [9] Parking lock mechanism (1) according to claim 1, wherein the locking mechanism (21) comprises a pressure element (11) connected to the pin (43), a feed element (12) connected to the plunger (14) and an inner sleeve (9), wherein the pressure element (11) and the feed element (12) are movably received in the inner sleeve (9) and relative to it, the feed element (12) is pre-tensioned, the feed element (12) is displaceable by the preload force between at least two positions in the stroke direction (3) and rotatable in a circumferential direction (33) of the inner sleeve (9), and wherein a first position of these positions corresponds to a state extended in the direction of stroke (3) and a second position of these positions corresponds to a state retracted in the direction of stroke (3) of the feed element (12). [10] Parking lock mechanism (1) according to claim 9, wherein the inner sleeve (9) has at least one radial protrusion (36) on its inner circumference, a contour of the pressure element (11) has first chamfered sections (37) and at least one groove (38) extending in the stroke direction (3), wherein the protrusion is arranged in the groove (38) of the pressure element (11) so that the pressure element (11) is arranged in the inner sleeve (9) in a rotationally fixed and stroke-movable manner, a contour of the feed element (12), second chamfered sections (39) which form stop surfaces in the stroke direction (3) and convert the preload force into a torque of the feed element (12), the feed element contour further having projections (40) and grooves (41) extending in the stroke direction (3), and wherein in the extended state of the feed element (12), the projection in the stroke direction (3) rests against a second chamfered section (39) and in the circumferential direction (33) against the projection (40) of the feed element contour, and in the retracted state of the feed element (12), the projection is arranged in the groove (41) of the feed element contour. [11] Parking lock mechanism (1) according to one of claims 1 and 9 to 10, wherein the inner sleeve (9) has an internal circumferential stop surface (34) which forms a lower stop in the stroke direction (3) for the pressure element (11) and wherein the locking mechanism (21) has a first compression spring (16) which is arranged in the stroke direction (3) between a flange (35) of the pressure element (11) and the stop surface (34) of the inner sleeve (9) and biases the pressure element (11) against the pin (43). [12] Parking lock mechanism (1) according to one of claims 1 and 9 to 11, comprising an outer sleeve (10) which jointly accommodates the actuator (20) and the locking mechanism (21), and an intermediate sleeve (15) which is arranged radially between the outer sleeve (10) and the inner sleeve (9), wherein the intermediate sleeve (15) is rigidly connected to the inner sleeve (9), wherein the intermediate sleeve (15) and the inner sleeve (9) are movable relative to and within the outer sleeve (10) in the stroke direction (3). [13] Vehicle (100) comprising the parking lock mechanism (1) according to any of the preceding claims and a parking lock wheel.

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