CN212106898U

CN212106898U - Parking device and vehicle

Info

Publication number: CN212106898U
Application number: CN202020298726.9U
Authority: CN
Inventors: 胡如现; 雷建宇
Original assignee: Beiqi Foton Motor Co Ltd
Current assignee: Beiqi Foton Motor Co Ltd
Priority date: 2020-03-11
Filing date: 2020-03-11
Publication date: 2020-12-08
Anticipated expiration: 2030-03-11

Abstract

The present disclosure relates to a parking device and a vehicle. The parking device comprises a pawl mechanism, a push rod mechanism, a power mechanism and a ratchet wheel, wherein the ratchet wheel is used for being in transmission connection with a transmission shaft of a vehicle, the pawl mechanism comprises a pawl return piece and a pawl matched with the ratchet wheel, the push rod mechanism comprises a push rod provided with a cam, the cam is provided with a combining part and a separating part, the appearance profiles of the combining part and the separating part are inconsistent, the power mechanism is used for driving the push rod to move, so that the parking device has a parking state and a driving state, in the parking state, the combining part abuts against the pawl to enable the pawl to be meshed with the ratchet wheel, and. When the parking state is switched to the driving state, the pawl return piece releases energy to enable the pawl to be separated from the ratchet wheel, and the pawl abuts against the separation part. The parking device has the advantages of reliable work, simple structure, less parts, light weight and low cost.

Description

Parking device and vehicle

Technical Field

The disclosure relates to the technical field of vehicles, in particular to a parking device and a vehicle.

Background

The existing automobiles are mainly divided into an automatic gear and a manual gear according to different gear shifting modes. Because the automatic transmission automobile is easy and convenient to operate and is favored by more and more people, generally speaking, the automatic transmission automobile is mainly provided with gears such as an R gear, a D gear, a P gear, an N gear and the like. The P gear, namely the parking gear, is engaged with a ratchet wheel arranged on a transmission shaft by a mechanical device to achieve the aim of parking. However, the pressing device of the existing P-gear parking mechanism has various parts, complex processing technology and heavy total mechanism, and the consideration on how to ensure that the ratchet wheel is not occluded in the running state is insufficient.

SUMMERY OF THE UTILITY MODEL

The parking device is simple in structure and reliable in operation, and can ensure that a pawl is separated from a ratchet wheel in a driving state.

In order to achieve the above object, the present disclosure provides a parking device and a vehicle, the parking device including a pawl mechanism, a push rod mechanism, a power mechanism, and a ratchet for transmission connection with a transmission shaft of the vehicle, the pawl mechanism comprises a pawl return piece and a pawl matched with the ratchet wheel, the push rod mechanism comprises a push rod provided with a cam, the cam is provided with a combination part and a separation part with different outline profiles, the power mechanism is used for driving the push rod to move so as to enable the parking device to have a parking state and a driving state, in the parking state, the combining part is abutted against the pawl to enable the pawl to be meshed with the ratchet wheel, and the pawl return piece stores energy, when the parking state is switched to the driving state, the pawl return piece releases energy to enable the pawl to be separated from the ratchet wheel, and the pawl abuts against the separation part.

Optionally, the combining portion and the separating portion are arranged along the axial direction of the push rod, the combining portion is a conical structure, and the pawl is provided with an inclined surface matched with the conical structure.

Optionally, the separating portion is a cylindrical structure, and the separating portion and the combining portion are in smooth transition, and the outer diameter of the combining portion is larger than that of the separating portion.

Optionally, the push rod mechanism further includes a first elastic member, the push rod is provided with a first abutting member and a second abutting member, the first elastic member, the cam and the second abutting member are sequentially disposed, the cam is slidably sleeved on the push rod, and the first elastic member is compressibly disposed between the first abutting member and the cam.

Optionally, the pawl mechanism further comprises a pawl shaft, the pawl is rotatably sleeved on the pawl shaft, the power mechanism comprises a swinging piece rotatably sleeved on the pawl shaft, the swinging piece is used for driving the push rod to move, the pawl return piece is a torsion spring, one end of the torsion spring abuts against the lower surface of the pawl, the other end of the torsion spring is used for being fixed on the speed reducer, and when the pawl is meshed with the ratchet wheel, the torsion spring stores energy.

Optionally, the power mechanism further comprises a motor, a transmission gear and a swinging member, the transmission gear is sleeved on an output shaft of the motor, and a plurality of teeth meshed with the transmission gear are arranged on the periphery of the swinging member.

Optionally, the swinging member is of a fan-shaped structure, the outer periphery of the swinging member includes a transmission section and two limiting protrusions, the transmission section is provided with the plurality of teeth, and the two limiting protrusions are respectively convexly arranged at two ends of the transmission section to limit the maximum rotating angle of the swinging member.

Optionally, the power mechanism further comprises a locking assembly, the locking assembly comprises a second elastic part, a rolling body and a locking part for being fixed on the speed reducer, the locking part is provided with a cavity with an opening, the second elastic part and the rolling body are arranged in the cavity, two ends of the second elastic part respectively abut against the locking part and the rolling body, so that part of the rolling body is exposed out of the opening, and the rolling body can be arranged at the opening in a rolling manner,

the outer periphery of swinging piece still includes spacing section, spacing section is provided with two spacing grooves along circumference interval parking state, one of them spacing groove is gone to the rolling element card, the rolling element card is gone into another spacing groove.

Optionally, the push rod mechanism further includes a limiting member fixed to the speed reducer, and in the parking state, the limiting member can abut against the cam to limit the maximum displacement of the cam.

According to another aspect of the present disclosure, there is also provided a vehicle including the parking apparatus described above.

In the technical scheme, when the vehicle needs to be parked, the power mechanism is started to drive the push rod to move, so that the combining part of the cam on the push rod abuts against the pawl, the pawl is pressed down, the pawl is meshed with the ratchet wheel, the rotation of the ratchet wheel is limited, the rotation of a transmission shaft of the vehicle connected with the ratchet wheel is further limited, and the parking function is achieved. Meanwhile, the pawl return element stores energy. When the vehicle needs to be started, the parking state needs to be switched to the driving state, the power mechanism runs in the reverse direction, the combining part is separated from the pawl, the downward pressing of the pawl is relieved, and meanwhile, the pawl return piece releases energy to enable the pawl to be lifted upwards and separated from the ratchet wheel. And can make the pawl lift up and support in the separation portion of cam under the support of pawl return spare to prevent that in the driving process, the pawl drops and the ratchet meshing, the potential safety hazard appears. Therefore, the parking device in the disclosure has the advantages of reliable operation, simple structure, less parts, light weight and low manufacturing cost. And the pawl return piece and the separation part are matched, so that the pawl in a running state can be kept in a separation state from the ratchet wheel, the safety of the running state is ensured, and the work is reliable.

Additional features and advantages of the disclosure will be set forth in the detailed description which follows.

Drawings

The accompanying drawings, which are included to provide a further understanding of the disclosure and are incorporated in and constitute a part of this specification, illustrate embodiments of the disclosure and together with the description serve to explain the disclosure without limiting the disclosure. In the drawings:

fig. 1 is a schematic perspective view of a parking apparatus according to an embodiment of the present disclosure;

fig. 2 is an exploded schematic view of a parking apparatus according to an embodiment of the present disclosure;

fig. 3 is a perspective view illustrating a swing member of a parking apparatus according to an embodiment of the present disclosure;

fig. 4 is a front schematic view of a cam of a parking apparatus according to an embodiment of the present disclosure;

fig. 5 is a schematic sectional view of a locking assembly of a parking apparatus according to an embodiment of the present disclosure.

Description of the reference numerals

100-a parking device; 10-a detent mechanism; 11-a pawl shaft; 12-pawl return; 13-a pawl; 131-a bevel; 14-a bushing; 20-a push rod mechanism; 21-a push rod; 211-a first stop; 212-a second stop; 22-a cam; 221-a binding moiety; 222-a separation section; 23-a first elastic member; 24-a limit piece; 30-a power mechanism; 31-a swinging member; 311-a transmission section; 312-a stop boss; 313-a limiting section; 314-a limiting groove; 32-a motor; 34-a locking assembly; 341-a second elastic member; 342-rolling elements; 343-a locking member; 40-ratchet wheel.

Detailed Description

The following detailed description of specific embodiments of the present disclosure is provided in connection with the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present disclosure, are given by way of illustration and explanation only, not limitation.

In the present disclosure, unless otherwise specified, the use of the directional terms such as "up and down" generally means "up and down" in a state where parking device 100 is mounted on the vehicle, and the directional terms correspond to the directions of "up and down" when the vehicle is normally running, and "inside and outside" mean inside and outside of the contour of the relevant component. In addition, the terms "first", "second", and the like used in the embodiments of the present disclosure are for distinguishing one element from another, and have no order or importance.

The present disclosure provides a safe and reliable parking apparatus 100 having a simple structure and low cost, as shown in fig. 1 to 5, the parking apparatus 100 includes a pawl mechanism 10, a push rod mechanism 20, a power mechanism 30, and a ratchet 40 for driving connection with a transmission shaft of a vehicle. The pawl mechanism 10 includes a pawl return 12 and a pawl 13 that cooperates with a ratchet wheel 40. The push rod mechanism 20 includes a push rod 21 provided with a cam 22. The cam 22 has a coupling portion 221 and a separating portion 222 with non-uniform contour profiles so that the pawls 13 have different position states by cooperation of the coupling portion 221 and the separating portion 222 with the pawls 13.

The power mechanism 30 is used for driving the push rod 21 to move, so that the parking device 100 has a parking state and a driving state. In the park state, the engaging portion 221 abuts against the pawl 13 to engage the pawl 13 with the ratchet 40 and to charge the pawl return member 12. When the parking state is switched to the driving state, the pawl returning piece 12 releases energy to separate the pawl 13 from the ratchet wheel 40, and the pawl 13 abuts against the separating part 222.

In the above technical solution, when a vehicle needs to be parked, the power mechanism 30 is started to drive the push rod 21 to move, so that the combining portion 221 of the cam 22 on the push rod 21 abuts against the pawl 13, the pawl 13 is pressed down, the pawl 13 is meshed with the ratchet wheel 40, the rotation of the ratchet wheel 40 is limited, the rotation of a transmission shaft of the vehicle connected with the ratchet wheel 40 is limited, and therefore, the parking function is achieved. At the same time, the pawl return 12 stores energy. When the vehicle needs to be started, the parking state needs to be switched to the driving state, the power mechanism 30 reversely operates, the combining part 221 is separated from the pawl 13, the pressing of the pawl 13 is released, and meanwhile, the pawl return piece 12 releases energy to lift the pawl 13 and separate the pawl 13 from the ratchet wheel 40. And under the support of the pawl return piece 12, the pawl 13 can be lifted up and abutted against the separating part 222 of the cam 22, so that the pawl 13 is prevented from falling to be meshed with the ratchet wheel 40 in the driving process, and potential safety hazards are avoided. Therefore, the parking device 100 of the present disclosure is reliable in operation, simple in structure, few in parts, light in weight, and low in cost. Moreover, the cooperation of the pawl return piece 12 and the separating part 222 enables the pawl 13 in the running state to keep the separating state from the ratchet wheel 40, thereby ensuring the safety of the running state and ensuring the reliable operation.

The parking device 100 in the present disclosure is suitable for any vehicle requiring parking, including but not limited to a pure electric vehicle, a hybrid electric vehicle, or an automobile.

The specific structure and shape of the cam 22 is not limited in this disclosure, and in one embodiment, as shown in fig. 2 and 4, the engaging portion 221 and the separating portion 222 are arranged in the axial direction of the push rod 21. The engaging portion 221 is a tapered structure, and the pawl 13 is provided with a slope 131 that cooperates with the tapered structure. When the combination part 221 moves along with the push rod 21 during parking, the conical surface on the combination part 221 abuts against the inclined surface 131 on the pawl 13 to press down the pawl 13, so that the pawl 13 is meshed with the ratchet wheel 40, and the parking is finished.

Further, the separating portion 222 is a cylindrical structure, and the separating portion 222 and the engaging portion 221 smoothly transit, so that the pawl 13 can smoothly switch from engagement with the engaging portion 221 to engagement with the separating portion 222 when the push rod 21 moves. The coupling portion 221 has an outer diameter larger than that of the disengaging portion 222 so that the pawl 13 is pressed down to engage with the ratchet 40 when the coupling portion 221 is engaged with the pawl 13, and the pawl 13 is lifted up to disengage from the ratchet 40 when the disengaging portion 222 is engaged with the pawl 13, thereby achieving switching between the traveling state and the parking state of the vehicle.

It will be appreciated that in other embodiments, the disengagement portion 222 may be a tapered structure that is capable of engaging the ramp 131 on the pawl 13. Alternatively, the disengagement portion 222 may have another shape, such as a square shape, as long as the pawl 13 can abut against the disengagement portion 222 under the support of the pawl returning member 12, and the pawl 13 is disengaged from the ratchet 40.

To ensure that the pawl 13 and the ratchet wheel 40 remain in positive engagement during parking, the push rod mechanism 20 further comprises a first resilient member 23, as shown in fig. 2. The push rod 21 is provided with a first stopper 211 and a second stopper 212. The first stop 211, the first elastic element 23, the cam 22 and the second stop 212 are sequentially disposed, the cam 22 is slidably sleeved on the push rod 21, and the first elastic element 23 is compressibly disposed between the first stop 211 and the cam 22.

When the driving state is switched to the parking state, the push rod 21 moves along the direction from the first abutting part 211 to the second abutting part 212, the push rod 21 continues to move after the cam 22 abuts against the inclined surface 131 of the pawl 13, the cam 22 presses the first elastic part 23, so that the first elastic part 23 generates thrust on the cam 22, after the push rod 21 stops moving, the cam 22 and the pawl 13 can abut against more tightly through the thrust on the cam 22 generated by the first elastic part 23, the cam 22 can continuously generate downward pressure on the pawl 13 through the matching with the inclined surface 131 of the pawl 13, the pawl 13 and the ratchet 40 are matched more reliably, and the parking device 100 can work more reliably.

In the present disclosure, the first elastic member 23 may be a spring, an elastic rubber member, a spring sheet, or other elastic mechanism, and preferably, may be a spring.

In an embodiment of the present disclosure, as shown in fig. 1 and 2, the detent mechanism 10 further includes a detent shaft 11, and the detent 13 is rotatably sleeved on the detent shaft 11. The power mechanism 30 includes a swinging member 31 rotatably sleeved on the pawl shaft 11, and the swinging member 31 is used for driving the push rod 21 to move. The pawl return piece 12 is a torsion spring, the torsion spring is also sleeved on the pawl shaft 11, one end of the torsion spring abuts against the lower surface of the pawl 13, the other end of the torsion spring is used for being fixed on a shell of the speed reducer, and when the pawl 13 is meshed with the ratchet wheel 40, the torsion spring stores energy.

When the driving state is switched to the parking state, the swinging piece 31 rotates to drive the push rod 21 connected with the swinging piece to move, the cam 22 on the push rod 21 enables the pawl 13 to overcome the elasticity of the torsion spring to rotate downwards and to be meshed with the ratchet wheel 40, and the torsion spring stores energy. When the parking state is switched to the driving state, the swinging piece 31 rotates in the opposite direction to drive the push rod 21 to move in the opposite direction, the downward pressing on the pawl 13 is released, meanwhile, the torsion spring releases energy to lift the pawl 13, so that the pawl 13 is separated from the ratchet 40, and the locking on a transmission shaft of the vehicle is released.

Further, in order to prevent the torsion spring from wearing the detent shaft 11 when the torsion spring deforms, the detent mechanism 10 further includes a bushing 14, the bushing 14 is sleeved on the detent shaft 11, and the torsion spring is sleeved on the bushing 14.

In one embodiment of the present disclosure, as shown in fig. 1 and 2, the power mechanism 30 includes a motor 32, a transmission gear, and an oscillating member 31. The transmission gear is sleeved on an output shaft of the motor 32, and a plurality of teeth meshed with the transmission gear are arranged on the periphery of the swinging piece 31. When the motor 32 rotates, the transmission gear is driven to rotate, and the swinging member 31 is driven to rotate. The gear transmission is easier to control the rotation angle of the swinging piece 31 by controlling the motor 32, so as to control the motion amplitude of the push rod 21, thereby controlling the action of the pawl 13 through the motion of the push rod 21, accurately controlling the action of the pawl 13, and ensuring the reliable realization of the parking state and the driving state.

It can be understood that in other embodiments, the motor 32 drives the oscillating member 31 to rotate by means of a worm gear, an output shaft of the motor 32 is in transmission connection with the worm, and the outer periphery of the oscillating member 31 is provided with a tooth groove matched with the worm.

The specific shape of the oscillating member 31 is not limited in this disclosure, and in one embodiment, the oscillating member 31 has a fan-shaped structure, as shown in fig. 3. The outer periphery of the oscillating member 31 includes a transmission section 311 and two limit protrusions 312. The transmission section 311 is provided with a plurality of teeth, and two limit protrusions 312 are respectively protruded at two ends of the transmission section 311 to limit the maximum angle of rotation of the swinging member 31, i.e. the maximum angle of back-and-forth rotation of the swinging member 31. When the swinging member 31 is engaged with the transmission gear, due to the limitation of the limiting protrusions 312 at the two sides of the transmission section 311, the transmission gear can only be engaged with the teeth on the transmission section 311 between the limiting protrusions 312, thereby avoiding the situation that the swinging member 31 rotates too much and is disengaged from the transmission gear, and being convenient for quickly and accurately finding the correct installation position where the swinging member 31 is engaged with the transmission gear during installation.

As shown in fig. 1 to 3, a mounting hole for engaging with the push rod 21 is formed on an end surface of the swinging member 31, and a mounting block engaged with the mounting hole is disposed at an end of the push rod 21 and is embedded in the mounting hole, so that the push rod 21 can be driven to move when the swinging member 31 rotates.

Further, in order to lock the swinging member 31 in the driving state and the parking state, as shown in fig. 3, the outer periphery of the swinging member 31 further includes a limiting section 313, and two limiting grooves 314 are circumferentially provided at intervals on the limiting section 313.

As shown in fig. 5, the power mechanism 30 further includes a locking assembly 34. The locking assembly 34 includes a second elastic member 341, a rolling body 342, and a locking member 343 for fixing to the decelerator. The locker 343 is provided with a receiving chamber having an opening, and the second elastic member 341 and the rolling body 342 are disposed in the receiving chamber. And two ends of the second elastic element 341 respectively abut against the locking element 343 and the rolling element 342, so that part of the rolling element 342 is exposed out of the opening, and the rolling element 342 is rollably disposed at the opening.

In the parking state, the rolling element 342 engages in one of the retaining grooves 314, and in the driving state, the rolling element 342 engages in the other retaining groove 314. And due to the thrust of the second elastic element 341 to the rolling element 342, the rolling element 342 can be abutted against the limiting groove 314 and continuously has an abutting force, so that the swinging element 31 in the driving state and the parking state can be locked, and the reliable realization of the driving state and the parking state is ensured.

In the present disclosure, the second elastic member 341 may be a spring, an elastic rubber member, a spring sheet, or other elastic mechanism, and preferably, may be a spring.

As shown in fig. 1 and 2, the push rod mechanism 20 further includes a stopper 24 for fixing to the reducer. The limiting member 24 can be fixed to the housing of the speed reducer by a screw or a bolt. In the parking state, the stopper 24 can abut against the cam 22 to limit the maximum displacement of the cam 22. Specifically, in one embodiment, the limiting member 24 has a cylindrical structure with a semicircular cross section, the cylindrical structure covers the cam 22, and a step portion is provided on an inner wall of the cylindrical structure, when the parking state is switched to the driving state, the swinging member 31 rotates back, the push rod 21 retracts, and the cam 22 on the push rod 21 can abut against the step portion on the limiting member 24, so that the maximum retraction displacement of the push rod 21 can be limited, and the situation that the cam 22 on the push rod 21 and the pawl 13 are disengaged due to an excessively large movement amplitude of the push rod 21 is avoided.

According to another aspect of the present disclosure, there is also provided a vehicle including the parking apparatus 100 described above. With the parking device 100 described above, it is possible to ensure that the vehicle is in a reliable parking state and running state, and to switch between the parking state and the running state simply.

The preferred embodiments of the present disclosure are described in detail with reference to the accompanying drawings, however, the present disclosure is not limited to the specific details of the above embodiments, and various simple modifications may be made to the technical solution of the present disclosure within the technical idea of the present disclosure, and these simple modifications all belong to the protection scope of the present disclosure.

It should be noted that, in the foregoing embodiments, various features described in the above embodiments may be combined in any suitable manner, and in order to avoid unnecessary repetition, various combinations that are possible in the present disclosure are not described again.

In addition, any combination of various embodiments of the present disclosure may be made, and the same should be considered as the disclosure of the present disclosure, as long as it does not depart from the spirit of the present disclosure.

Claims

1. The parking device is characterized by comprising a pawl mechanism (10), a push rod mechanism (20), a power mechanism (30) and a ratchet wheel (40) in transmission connection with a transmission shaft of a vehicle, wherein the pawl mechanism (10) comprises a pawl return piece (12) and a pawl (13) matched with the ratchet wheel (40), the push rod mechanism (20) comprises a push rod (21) provided with a cam (22), the cam (22) is provided with a combining part (221) and a separating part (222) which are inconsistent in outline, the power mechanism (30) is used for driving the push rod (21) to move so that the parking device (100) has a parking state and a driving state, in the parking state, the combining part (221) abuts against the pawl (13) to enable the pawl (13) to be meshed with the ratchet wheel (40) and enable the pawl return piece (12) to store energy, when the parking state is switched to the driving state, the pawl return piece (12) releases energy to enable the pawl (13) to be separated from the ratchet wheel (40), and the pawl (13) abuts against the separation part (222).

2. Parking device according to claim 1, wherein said coupling portion (221) and said disengagement portion (222) are arranged along the axial direction of said push rod (21), said coupling portion (221) being of a conical configuration, said pawl (13) being provided with a bevel (131) cooperating with said conical configuration.

3. Parking device according to claim 2, wherein the disengagement portion (222) is of cylindrical configuration and the disengagement portion (222) is in smooth transition with the engagement portion (221), the outer diameter of the engagement portion (221) being greater than the outer diameter of the disengagement portion (222).

4. Parking device according to claim 2, wherein said push rod mechanism (20) further comprises a first elastic member (23), said push rod (21) is provided with a first stopper member (211) and a second stopper member (212), said first stopper member (211), said first elastic member (23), said cam (22) and said second stopper member (212) are sequentially disposed, said cam (22) is slidably sleeved on said push rod (21), and said first elastic member (23) is compressibly disposed between said first stopper member (211) and said cam (22).

5. The parking device according to claim 1, wherein the pawl mechanism (10) further comprises a pawl shaft (11), the pawl (13) is rotatably sleeved on the pawl shaft (11), the power mechanism (30) comprises a swinging piece (31) rotatably sleeved on the pawl shaft (11), the swinging piece (31) is used for driving the push rod (21) to move, the pawl return piece (12) is a torsion spring, one end of the torsion spring abuts against the lower surface of the pawl (13), the other end of the torsion spring is used for being fixed on a speed reducer, and when the pawl (13) is meshed with the ratchet wheel (40), the torsion spring stores energy.

6. The parking device according to any one of claims 1 to 5, wherein the power mechanism (30) further comprises a motor (32), a transmission gear and an oscillating member (31), the transmission gear is sleeved on an output shaft of the motor (32), and a plurality of teeth for meshing with the transmission gear are arranged on the periphery of the oscillating member (31).

7. The parking device according to claim 6, wherein the swinging member (31) is of a fan-shaped structure, the outer periphery of the swinging member (31) comprises a transmission section (311) and two limiting protrusions (312), the transmission section (311) is provided with the plurality of teeth, and the two limiting protrusions (312) are respectively arranged at two ends of the transmission section (311) in a protruding manner so as to limit the maximum rotation angle of the swinging member (31).

8. The parking device according to claim 6, wherein the power mechanism (30) further comprises a locking assembly (34), the locking assembly (34) comprises a second elastic member (341), a rolling body (342) and a locking member (343) for fixing to a speed reducer, the locking member (343) is provided with a cavity with an opening, the second elastic member (341) and the rolling body (342) are arranged in the cavity, two ends of the second elastic member (341) respectively abut against the locking member (343) and the rolling body (342) so that part of the rolling body (342) is exposed out of the opening, and the rolling body (342) is rollably arranged at the opening,

the outer periphery of the swinging piece (31) further comprises a limiting section (313), the limiting section (313) is provided with two limiting grooves (314) at intervals along the circumferential direction, in the parking state, the rolling body (342) is clamped into one of the limiting grooves (314), and in the driving state, the rolling body (342) is clamped into the other limiting groove (314).

9. Parking device according to claim 1, wherein said push rod mechanism (20) further comprises a stop member (24) for fixing to a retarder, said stop member (24) being able to abut against said cam (22) in said parking state to limit the maximum displacement of said cam (22).

10. A vehicle, characterized by comprising a parking device (100) according to any one of claims 1-9.