CN219774774U - Parking lock and vehicle - Google Patents

Abstract

The utility model belongs to the technical field of locks, and particularly relates to a parking lock and a vehicle. The parking lock utilizes the transmission mechanism with the self-locking function, and when the transmission mechanism does not have external torque input, the rotation movement of the driving shaft is limited by the locking mechanism, so that the parking lock has the function of parking, and the vehicle is prevented from sliding down a slope and is locked to be prevented from being stolen. The parking lock is also provided with a manual operation device for switching the locking state and the disengaging state of the transmission mechanism and the locking mechanism, and in the disengaging state, the transmission mechanism does not limit the rotation movement of the driving shaft any more, which is equivalent to neutral gear sliding, and an operator can easily push the electric wheelchair. When the parking lock is applied to a vehicle, the parking lock enters the parking mode immediately after the driving device stops working, the time for the traveling process and the parking mode switching process is extremely short, and the power supply electric quantity cannot be consumed after the parking lock enters the parking mode. The parking lock has simple structure and high reliability, does not need an additional electric control system for control, and can be widely applied to various vehicles.

Description

Parking lock and vehicle

Technical Field

The utility model belongs to the technical field of locks, and particularly relates to a parking lock and a vehicle.

Background

The inventor of the utility model grants an utility model patent in 2022, 10 and 14 days, and the patent number is ZL202221962103.2, and the patent name is an electromagnetic brake, a brake motor and an electric vehicle. The patent specifically discloses an electromagnetic brake comprising a frame body, an electric control telescopic assembly, a control assembly and a brake piece, wherein the electric control telescopic assembly is arranged on the frame body; the control component is rotatably and movably arranged on the frame body; the brake piece is arranged on the control assembly; the telescopic rod of the electric control telescopic assembly is arranged corresponding to the control assembly so as to provide driving force to enable the control assembly to rotate, so that the control assembly moves linearly to drive the brake piece to be combined with or separated from the rotor of the motor. The electromagnetic brake drives the control assembly to rotate through the electric control telescopic assembly, so that the control assembly converts rotary motion into linear motion, the brake is driven to move, the combination or separation of the brake and the rotor of the motor is realized, the braking and unlocking processes are more stable and smooth, meanwhile, successful unlocking of the motor can be better ensured, and the normal use of the motor is better ensured.

However, the structure of the electrically controlled telescopic assembly is relatively complex, and specifically comprises a first electromagnet and a second electromagnet. The first electromagnet is arranged on the frame body, and the telescopic rod of the first electromagnet is arranged corresponding to the control mechanism so as to provide driving force to enable the control assembly to rotate positively. The second electromagnet is arranged on the frame body, and the telescopic rod of the second electromagnet is arranged corresponding to the control mechanism so as to provide driving force to enable the control assembly to reversely rotate. The complicated automatically controlled flexible subassembly of structure brings manufacturing difficulty, assembly difficulty, and the reliability reduces, the problem of cost increase, and the unlocking of automatically controlled flexible subassembly still needs control first electro-magnet and second electro-magnet in addition, has increased control system's burden.

Accordingly, the prior art is subject to improvement and development.

Disclosure of Invention

The utility model aims to provide a parking lock which has the characteristics of simple structure and high reliability.

In order to solve the technical problems, the parking lock provided by the utility model comprises a driving shaft, a transmission mechanism and a locking mechanism, wherein the transmission mechanism has a self-locking function, the transmission mechanism and the locking mechanism are arranged on the driving shaft, the locking mechanism has a first state locked with the transmission mechanism, parking is realized in the first state, the locking mechanism also has a second state separated from the transmission mechanism, parking is released in the second state, and the parking lock further comprises a manual operation device, wherein the manual operation device is used for switching between the first state and the second state of the locking mechanism.

Further, the transmission mechanism comprises one or more of a worm gear mechanism and a screw pair mechanism.

Further, the transmission mechanism is a worm and gear mechanism, the transmission mechanism comprises a worm wheel and a worm, the worm wheel is meshed with the worm, the worm is connected with an output shaft of the driving device, and the worm wheel is connected with the driving shaft.

Further, the locking mechanism comprises a locking element, an elastic element and a locking structure for locking or unlocking, wherein the elastic element has a pretightening force, and the elastic element enables the locking element to be locked with the transmission mechanism through the locking structure.

Further, the locking structure comprises a first locking structure and a second locking structure, the first locking structure is arranged on the locking piece, and the second locking structure is arranged on the transmission mechanism.

Further, the first locking structure is a protrusion arranged on the locking piece, and the second locking structure is a groove matched with the first locking structure.

Further, the manual operation device comprises a handle, a connecting shaft and an eccentric lug arranged on the connecting shaft, the eccentric lug is linked with the locking mechanism, and the handle is rotated to drive the connecting shaft and the eccentric lug to rotate so as to separate or combine the locking mechanism.

Further, the locking mechanism is provided with a ring groove, and the eccentric lug is matched with the ring groove.

Further, the manual operation device is further provided with a positioning structure for accurately positioning the position of the handle.

Further, the positioning structure comprises a positioning groove arranged on the handle and a positioning boss arranged on the sealing cover, and the positioning groove is clamped with the positioning boss.

The utility model also provides a vehicle, which comprises the parking lock, a driving wheel and a driving device, wherein two ends of the driving shaft are respectively connected with the driving wheel and the driving device, and the driving device outputs torque to the driving shaft.

Therefore, the parking lock utilizes the transmission mechanism with the self-locking function, and when no external torque is input to the transmission mechanism, the rotation movement of the driving shaft is limited through the locking mechanism, so that the parking lock has the parking effect, and the vehicle is prevented from sliding on a slope and is locked to be prevented from being stolen. The parking lock is also provided with a manual operation device for switching the locking state and the disengaging state of the transmission mechanism and the locking mechanism, and in the disengaging state, the transmission mechanism does not limit the rotation movement of the driving shaft any more, which is equivalent to neutral gear sliding, and an operator can easily push the electric wheelchair. When the parking lock is applied to a vehicle, the parking lock enters the parking mode immediately after the driving device stops working, the time for the traveling process and the parking mode switching process is extremely short, and the power supply electric quantity cannot be consumed after the parking lock enters the parking mode. The parking lock has simple structure and high reliability, does not need an additional electric control system for control, and can be widely applied to various vehicles.

Additional features and advantages of the utility model will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model. The objectives and other advantages of the utility model will be realized and attained by the structure particularly pointed out in the written description and claims thereof as well as the appended drawings.

Drawings

Fig. 1 is a perspective view of a parking lock of the present utility model applied to a vehicle.

Fig. 2 is a front view of the parking lock of the present utility model applied to a vehicle.

Fig. 3 is a cross-sectional view taken along line A-A of fig. 2.

Fig. 4 is a top view of the parking lock of the present utility model as applied to a vehicle.

Fig. 5 is a cross-sectional view taken along line B-B of fig. 4.

Fig. 6 is an exploded view of the parking lock of the present utility model.

Fig. 7 is a first state (locked) view of the parking lock of the present utility model.

Fig. 8 is a second state (disengaged) view of the parking lock of the present utility model.

Fig. 9 is a schematic structural view of the manual operation device of the present utility model.

Description of the reference numerals:

1-driving wheel, 2-driving device, 21-output shaft, 3-control box, 31-main body, 32-sealing cover, 321-first positioning boss, 322-second positioning boss, 4-driving mechanism, 41-worm, 42-worm wheel, 421-second locking structure, 5-locking mechanism, 51-locking piece, 511-ring groove, 512-first locking structure, 52-elastic element, 53-retainer ring, 54-shaft sleeve, 6-driving shaft, 61-first shaft section, 62-second shaft section, 63-third shaft section, 631-limit surface, 64-clamping groove, 7-manual operation device, 71-handle, 72-connecting shaft, 73-eccentric lug, 74-positioning groove and 8-bracket.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary only for explaining the present utility model and are not to be construed as limiting the present utility model.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more of the described features. In the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically connected, electrically connected or can be communicated with each other; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present utility model, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

Fig. 1 shows a perspective view of the inventive parking lock applied to a vehicle, fig. 2 shows a front view of the inventive parking lock applied to a vehicle, and fig. 4 shows a top view of the inventive parking lock applied to a vehicle. The utility model can be applied to the field of vehicles, such as electric bicycles, electric wheelchairs, supermarket trolleys, flatbed vehicles and the like. In this embodiment, the device is applied to an electric wheelchair. The parking lock can prevent the electric wheelchair from running on a slope and suddenly powering off to slide and lock the electric wheelchair from being stolen.

The parking lock comprises a drive shaft 6, a control box 3, a transmission mechanism 4 and a locking mechanism 5. The control box 3 comprises a main body 31 and a sealing cover 32, wherein the main body 31 is of a cuboid structure with an opening at the lower part, the transmission mechanism 4 and the locking mechanism 5 are arranged in a cavity of the control box 3, and the opening is sealed by the sealing cover 32, so that the control box 3 has certain tightness and prevents external dust and moisture from entering. The parking lock is applied to an electric wheelchair, and further comprises a driving device 2, a driving wheel 1 and a bracket 8, wherein an output shaft 21 of the driving device 2 is directly or indirectly connected to a driving shaft 6, the driving shaft 6 is fixedly connected with the driving wheel 1, the driving device 2 is a power source, and the driving device 2 provides torque output to the driving wheel 1 to drive the vehicle to walk.

As shown in fig. 3, the support 8 is a structure for supporting the driving device 2 and the driving wheel 1, and is disposed between the driving device 2 and the driving wheel 1, and the support 8 may be a chassis of the electric wheelchair, so that the support 8 partially simplifies the process for better displaying and avoiding shielding other structures. The support 8, the drive device 2 and the control box 3 remain stationary, and the drive shaft 6, the transmission 4 and the locking mechanism 5 are all capable of rotational movement about the support 8. The control box 3 may be a separate structure or may be a part of the stand 8.

Fig. 6 shows an exploded view of the parking lock of the present utility model. As shown in the figure, the driving shaft 6 is mainly divided into three sections, namely a first shaft section 61, a second shaft section 62 and a third shaft section 63 with gradually reduced diameters from left to right, wherein the first shaft section 61 is in interference fit with a central hole of the driving wheel 1, so that the driving shaft 6 and the driving wheel 1 synchronously rotate, the second shaft section 62 is assembled with two bearings and then assembled with a hole of the bracket 8, the driving shaft 6 can rotate around the bracket 8, and the third shaft section 63 extends into a cavity in the control box 3 and is connected with the transmission mechanism 4 and the locking mechanism 5. The third shaft section 63 is provided with a limiting surface 631 at a position where the locking mechanism 5 is mounted, and the locking mechanism 5 is mounted on the third shaft section 63 so as to be rotatable along with the drive shaft 6 and slidable along the axial direction of the drive shaft 6. It should be noted that the stop surface 631 does not extend to the leftmost side of the third shaft section 63, because the worm wheel 42 of the transmission mechanism 4 needs to be mounted here, and the worm wheel 42 is hinged to the drive shaft 6.

The transmission mechanism 4 is a mechanism with a self-locking function, and the transmission mechanism 4 can be a worm gear mechanism, a screw pair mechanism or a combination of the two mechanisms. The screw pair mechanism consists of screw, nut and frame and converts the rotation into linear motion. The principle of screw pair self-locking is mainly based on the relationship between friction force and angle. When the screw thread pair is subjected to external forces such that the direction of the transmitted force creates an acute angle with the bevel of the spiral, this angle is called the self-locking angle. When the inclined plane of the screw pair is smaller than the self-locking angle, the included angle between the transmission direction of force and the inclined plane of the screw is too large, and the friction force is insufficient to counteract the reverse effect of the force, so that the screw can be automatically locked and cannot slide.

In this embodiment, the transmission mechanism 4 is a worm gear mechanism, the worm gear mechanism includes a worm gear 42 and a worm 41, the worm gear 42 is meshed with the worm 41, a center hole of the worm gear 42 is sleeved on a third shaft section 63 of the driving shaft 6, and an axis of the worm gear 42 and an axis of the worm 41 are perpendicular to each other, so that the driving device 2 is arranged right above the control box 3, and an output shaft 21 of the driving device 2 extends into the control box 3 from a vertical direction and is fixedly connected with the worm 41.

When the lead angle of the worm 41 is smaller than the equivalent friction angle between the meshing wheel teeth, the worm gear mechanism has self-locking properties, which can be achieved in reverse self-locking, i.e. the worm 41 can drive the worm wheel 42 by its helical side movement, but vice versa, the worm 41 cannot be driven by the worm wheel 42. The contact force of the tooth surface of the worm wheel 42 with the tooth surface of the worm 41 is large, and the lead angle is small, so that the generated friction force prevents the rotational movement. Thus, the worm gear is always driven by the worm 41.

The locking mechanism 5 includes a locking piece 51, an elastic member 52, and a locking structure that enables locking or disengagement. The center of the locking member 51 is provided with a square hole penetrating through, the square hole is matched with a shaft sleeve 54, the structure of the shaft sleeve 54 is matched with the square hole, the center of the shaft sleeve 54 is provided with a waist-shaped hole matched with the cross section of a third shaft section 63 with a limiting surface 631 of the driving shaft 6, and the shaft sleeve 54 is sleeved on the outer side of the third shaft section 63 and rotates synchronously with the driving shaft 6. The locking member 51 is sleeved on the outer side of the shaft sleeve 54, a sliding pair is formed by the side wall of the square hole of the locking member 51 and the outer peripheral surface of the shaft sleeve 54, and the length of the locking member 51 is shorter than that of the shaft sleeve 54, so that the locking member 51 can synchronously rotate with the driving shaft 6 and can reciprocate linearly along the axial direction of the driving shaft 6.

In fact, the sleeve 54 is not necessary, and the locking element 51 may be directly machined with a kidney-shaped hole matching the section of the third shaft section 63 of the driving shaft 6 with the limiting surface 631, and be directly assembled on the third shaft section 63, so that the sleeve 54 is provided, on the one hand, because the square hole of the locking element 51 and the sleeve 54 have four matching planes, and if the locking element 51 is directly matched with the third shaft section 63, only two matching planes exist, the former limiting effect is better; on the other hand, the processing and the assembly of parts are convenient.

The right end of the third shaft section 63 is further provided with a clamping groove 64, the retainer ring 53 is mounted on the clamping groove 64 to limit the axial and radial movement of the retainer ring, the elastic element 52 is mounted between the retainer ring 53 and the locking element 51, and the elastic element 52 has a certain pretightening force after being mounted, wherein the pretightening force means that the elastic element 52 is in a compressed state, and keeps elastic force on the retainer ring 53 and the locking element 51, namely, the locking element 51 has a tendency to move towards the second shaft section 62 of the driving shaft 6 under the action of elastic force.

The locking mechanism 5 comprises a locking structure, wherein the locking structure is used for keeping the locking mechanism 5 and the transmission mechanism 4 locked, the locking mechanism 5 and the transmission mechanism 4 are defined as a first state when locked, and parking is realized in the first state, namely a locking state; the disengagement of the locking mechanism 5 and the transmission mechanism 4 is defined as a second state, in which the release is performed, i.e. the released state.

In the present embodiment, the locking structure includes a first locking structure 512 and a second locking structure 421, wherein the first locking structure 512 is disposed on the locking element 51, and the second locking structure 421 is disposed on the worm wheel 42. Specifically, the first locking structure 512 is a protrusion provided on a side end surface of the locking element 51, and four protrusions are provided at equal intervals along the axis of the locking element 51. The second locking structure 421 is a structure adapted to the first locking structure 512, the second locking structure 421 is a structure similar to the first locking structure 512, the second locking structure 421 and the first locking structure 512 are staggered by a certain angle, so that a groove capable of accommodating the protrusion on the side end surface of the locking element 51 is formed between two adjacent protrusions, and the protrusion is embedded into the groove in the process of moving the locking element 51 towards the second shaft section 62 of the driving shaft 6, so that the worm wheel 42 and the locking element 51 are mutually locked.

As shown in fig. 7, in the locked state, the output shaft 21 of the driving device 2 inputs torque to the worm 41, the worm 41 drives the worm wheel 42 to rotate, and the worm wheel 42 drives the locking member 51, the shaft sleeve 54 and the driving shaft 6 to synchronously rotate, so that the torque is output to the driving wheel 1 to drive the electric wheelchair to advance or retract. In the actual application process, the electric wheelchair has the condition that the power supply is suddenly damaged or suddenly cut off, at this moment, the driving device 2 stops rotating, but the locking structure is still in the locking state, at this moment, the worm wheel 42 can not rotate due to the self-locking effect of the worm wheel and the worm, and the driving wheel 1 is limited to advance or retreat, so that even if the electric wheelchair stays on a slope, the phenomenon of sliding and the like can not occur.

Therefore, the parking lock enters the parking mode immediately after the driving device 2 stops working, the time for the traveling process and the parking mode switching process is extremely short, and the power supply electric quantity is not consumed after the parking lock enters the parking mode. The parking lock has simple structure and high reliability, does not need an additional electric control system for control, and can be widely applied to various vehicles.

If the electric wheelchair needs to be transported to a maintenance site for maintenance after the power supply is damaged or exhausted, the electric wheelchair is difficult to push in a parking mode, and various inconveniences exist. It is therefore necessary to provide specific means by which the locking mechanism 5 and the transmission mechanism 4 are disengaged, thus enabling the parking to be released and facilitating the operator to push the electric wheelchair.

In the present embodiment, the manual operation device 7 is added to switch between the first state and the second state of the lock mechanism 5.

As shown in fig. 6 to 8, the manual operation device 7 specifically includes a handle 71, a connecting shaft 72, and an eccentric protrusion 73 provided on the connecting shaft 72, wherein the handle 71 and the connecting shaft 72 are perpendicular to each other and fixedly connected, the eccentric protrusion 73 is provided above the connecting shaft 72, and the specific structure is a rectangular parallelepiped with a square bottom surface. In order to position the connecting shaft 72, a sleeve vertically upwards is arranged on the sealing cover 32 of the control box 3, and the connecting shaft 72 is sleeved on the sleeve and can rotate around the shaft.

In order to link the eccentric protrusion 73 with the locking element 51, a ring groove 511 is formed on the outer circumferential surface of the locking element 51, the connecting shaft 72 is installed at a position that the eccentric protrusion 73 extends into the ring groove 511, when the handle 71 is horizontal to the axis of the driving shaft 6, when the operator rotates the handle 71 by ninety degrees to be perpendicular to the axis of the driving shaft 6, the eccentric protrusion 73 rotates ninety degrees simultaneously, the locking element 51 is driven to approach the worm gear 42 direction, and enters a locking state, otherwise, when the handle 71 is vertical to the axis of the driving shaft 6, the operator rotates the handle 71 by ninety degrees to be horizontal to the axis of the driving shaft 6, the eccentric protrusion 73 drives the locking element 51 to be far away from the worm gear 42 direction, and the first locking structure 512 and the second locking structure 421 are separated from each other to enter a disengaging state.

In the disengaged state, as shown in fig. 8, the worm wheel 42 and the locking member 51 are released from the synchronous rotation, that is, the worm wheel 42 no longer restricts the forward or backward movement of the drive wheel 1, corresponding to the neutral slide, and the operator can easily push the electric wheelchair.

It should be noted that the eccentric protrusion 73 of the manual operation device 7 can rotate relative to the locking member 51, only during the switching process, because the eccentric protrusion 73 is a cuboid with a square bottom surface, and the side length of the square is smaller than the groove width of the annular groove 511, therefore, no matter the handle 71 is rotated ninety degrees to be horizontal to the axis of the driving shaft 6 or rotated ninety degrees to be perpendicular to the axis of the driving shaft 6, the eccentric protrusion 73 will not interfere with the annular groove 511 of the locking member 51, and only during the switching process of the handle 71 will push the two side walls of the annular groove 511 in the stop state.

In order to avoid that the electric wheelchair automatically deflects the traveling handle 71 at a bumpy road section and causes false unlocking, a positioning structure is arranged between the handle 71 and the sealing cover 32, specifically, a positioning boss and a positioning groove 74 are respectively arranged on the opposite surfaces of the handle 71 and the sealing cover 32, in this embodiment, the positioning groove 74 is arranged on the end face of the handle 71, the positioning boss is arranged on the end face of the sealing cover 32, one positioning boss is arranged on the positioning groove 74, two positioning bosses are arranged, each positioning boss comprises a first positioning boss 321 and a second positioning boss 322, the first positioning boss 321 is arranged on an axis which is parallel to the axis of the driving shaft 6 and passes through the axis of the connecting shaft 72, and the second positioning boss 322 is arranged on an axis which is perpendicular to the axis of the driving shaft 6.

When the operator rotates the handle 71 ninety degrees to be horizontal with the axis of the driving shaft 6, the positioning groove 74 of the handle 71 is engaged with the first positioning boss 321 of the sealing cover 32, and when the operator rotates the handle 71 ninety degrees to be vertical with the axis of the driving shaft 6, the positioning groove 74 of the handle 71 is engaged with the second positioning boss 322 of the sealing cover 32, and by setting the positioning structure, the position of the handle 71 is accurately positioned, and the disengagement in a bumpy road section is prevented.

It should be noted that the positions of the first positioning boss 321 and the second positioning boss 322 are not limited to the two positions, but are merely determined according to the relative angle between the handle 71 and the eccentric protrusion 73, and if the relative angle between the handle 71 and the eccentric protrusion 73 is changed, the positions of the first positioning boss 321 and the second positioning boss 322 are also changed as appropriate.

In the description of the present specification, reference to the terms "one embodiment," "certain embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

What has been described above is merely some embodiments of the present utility model. It will be apparent to those skilled in the art that various modifications and improvements can be made without departing from the spirit of the utility model.

Claims (11)

1. A parking lock, characterized in that: including drive shaft (6), drive mechanism (4) and locking mechanism (5), drive mechanism (4) have the self-locking function, drive mechanism (4) and locking mechanism (5) are installed on drive shaft (6), locking mechanism (5) have with the first state of drive mechanism (4) closure, realize the parking under first state, still have with the second state that drive mechanism (4) break away from, release parking under the second state, still include manual operation device (7), manual operation device (7) are used for first state and the second state mutual switching of locking mechanism (5).

2. A parking lock according to claim 1, wherein the transmission means (4) comprises one or more of a worm gear mechanism, a screw pair mechanism.

3. A parking lock according to claim 1, characterized in that the transmission means (4) is a worm gear mechanism, the transmission means (4) comprising a worm wheel (42) and a worm (41), the worm wheel (42) being in engagement with the worm (41), the worm (41) being connected with the output shaft (21) of the drive means (2), the worm wheel (42) being connected with the drive shaft (6).

4. A parking lock according to claim 1, characterized in that the locking mechanism (5) comprises a locking element (51) and a resilient element (52) and a locking structure enabling locking or disengagement, the resilient element (52) having a pre-tightening force, the resilient element (52) keeping the locking element (51) locked with the transmission mechanism (4) by means of the locking structure.

5. A parking lock according to claim 4, wherein the locking arrangement comprises a first locking arrangement (512) and a second locking arrangement (421), the first locking arrangement (512) being arranged at the locking element (51) and the second locking arrangement (421) being arranged at the transmission mechanism (4).

6. A parking lock according to claim 5, wherein the first locking structure (512) is a protrusion provided on the locking element (51), and the second locking structure (421) is a recess adapted to the first locking structure (512).

7. A parking lock according to claim 1, wherein the manual operation device (7) comprises a handle (71), a connecting shaft (72) and an eccentric protrusion (73) arranged on the connecting shaft (72), the eccentric protrusion (73) is linked with the locking mechanism (5), and the handle (71) rotates to drive the connecting shaft (72) and the eccentric protrusion (73) to rotate so as to disengage or combine the locking mechanism (5).

8. A parking lock according to claim 7, wherein the locking mechanism (5) is provided with a ring groove (511), the eccentric protrusion (73) being fitted with the ring groove (511).

9. A parking lock according to claim 7, characterized in that the manual operating means (7) is further provided with a positioning structure for accurately positioning the position of the handle (71).

10. A parking lock according to claim 9, wherein the positioning structure comprises a positioning groove (74) provided in the handle (71) and a positioning boss provided in the seal cover (32), the positioning groove (74) being engaged with the positioning boss.

11. Vehicle, characterized in that it comprises a parking lock according to any of claims 1 to 10, further comprising a driving wheel (1) and a driving device (2), both ends of the driving shaft (6) being connected to the driving wheel (1) and the driving device (2), respectively, the driving device (2) outputting a torque to the driving shaft (6).