CN220770013U - Brake locking mechanism and vehicle with same - Google Patents

Abstract

The utility model discloses a brake locking mechanism and a vehicle with the same, wherein the brake locking mechanism comprises: the ratchet wheel is used for being fixedly connected with a piece to be braked, and a ratchet slot is formed on the outer circumferential surface of the ratchet wheel; the locking ring is sleeved on the radial outer side of the ratchet wheel, the inner side surface of the locking ring is provided with a tooth part, the locking ring can move relative to the ratchet wheel along the axial direction of the ratchet wheel between a locking position and an unlocking position, the tooth part is matched in a ratchet tooth groove in the locking position, and the tooth part is separated from the ratchet tooth groove in the axial direction of the ratchet wheel in the unlocking position; and the driving assembly is connected with the locking ring and used for driving the locking ring to move between the locking position and the unlocking position. According to the brake locking mechanism, the switching of a driving mode can be realized, the structural parts of the locking mechanism are reduced, the production cost of the locking mechanism is reduced, and the working reliability of the locking mechanism is improved; meanwhile, the structural compactness of the locking mechanism and the space utilization rate inside the gearbox can be improved.

Description

Brake locking mechanism and vehicle with same

Technical Field

The utility model relates to the technical field of vehicles, in particular to a brake locking mechanism and a vehicle with the same.

Background

In the related art, in the point coupling system of the hybrid electric vehicle and the electric drive integrated system of the pure electric vehicle, when a certain part of the transmission system is locked or unlocked by switching the drive mode, a hydraulic brake, an electromagnetic brake or a brake with a motor structure is often required to realize the locking and unlocking functions of the transmission system. However, hydraulic brakes, electromagnetic brakes, or brakes of motor construction have problems of relatively large space occupation, high cost, and complicated working processes.

Disclosure of Invention

The present utility model aims to solve at least one of the technical problems existing in the prior art. Therefore, the utility model provides the brake locking mechanism, which can realize locking and unlocking of the locking mechanism, further realize switching of a driving mode, reduce structural parts of the locking mechanism, improve the production convenience of the locking mechanism, reduce the production cost of the locking mechanism, simplify the working process of the locking mechanism and improve the working reliability of the locking mechanism; in addition, the space occupation ratio of the locking mechanism in the radial direction and the axial direction can be reduced, the structural compactness of the locking mechanism is improved, and the space utilization rate in the gearbox can be improved.

The utility model further provides a vehicle with the brake locking mechanism.

The brake lock mechanism according to the first aspect of the utility model includes: the ratchet wheel is used for being fixedly connected with a piece to be braked, and a ratchet slot is formed on the outer circumferential surface of the ratchet wheel; the locking ring is sleeved on the radial outer side of the ratchet wheel, the inner side surface of the locking ring is provided with a tooth part, the locking ring can move relative to the ratchet wheel along the axial direction of the ratchet wheel between a locking position and an unlocking position, the tooth part is matched in the ratchet tooth groove in the locking position, and the tooth part is separated from the ratchet tooth groove in the axial direction of the ratchet wheel in the unlocking position; and the driving assembly is connected with the locking ring and used for driving the locking ring to move between the locking position and the unlocking position.

According to the brake locking mechanism, through the arrangement of the locking ring and the ratchet wheel, locking and unlocking of the locking mechanism can be realized, so that switching of a driving mode can be realized, meanwhile, structural parts of the locking mechanism can be reduced, the production convenience of the locking mechanism can be improved, the production cost of the locking mechanism is reduced, the working process of the locking mechanism is simplified, and the working reliability of the locking mechanism is improved; in addition, through setting up the locking ring in the radial outside of ratchet, can also reduce locking mechanism in radial and axial space ratio, and then can improve locking mechanism's compact structure to can improve the inside space utilization of gearbox.

According to some embodiments of the utility model, the number of the ratchet grooves is plural, the plural ratchet grooves are arranged at intervals along the circumferential direction of the ratchet wheel, the number of the teeth is plural, the plural teeth are arranged at intervals along the circumferential direction of the lock ring, and the number of the teeth is equal to or less than the number of the ratchet grooves.

According to some embodiments of the utility model, the drive assembly comprises: the driving piece is connected with the driving ring plate and used for driving the driving ring plate to rotate around the central axis of the ratchet wheel, wherein a driving part is arranged on the driving ring plate, a matching part is arranged on the locking ring, and the driving ring plate is matched with the matching part through the driving part to drive the locking ring to move along the axial direction of the ratchet wheel.

According to some embodiments of the utility model, one of the driving part and the mating part is formed as a projection and the other is formed as a groove extending in a circumferential direction of the driving ring plate, two side walls of the groove in an axial direction of the driving ring plate are a first side wall and a second side wall, respectively, each of which extends obliquely toward one side in the axial direction of the driving ring plate in the circumferential direction of the driving ring plate.

According to some embodiments of the utility model, the driving ring plate and the locking ring are arranged in an axial direction of the driving ring plate, the driving ring plate is formed with a plurality of driving posts protruding toward the locking ring, the driving posts are arranged at intervals along a circumferential direction of the driving ring plate, and the grooves are formed on an inner side surface of the driving posts in a radial direction of the driving ring plate.

According to some embodiments of the utility model, a side wall of the groove facing away from the locking ring is formed as an arc surface facing the locking ring protrusion, and the other side wall of the groove facing toward the locking ring is formed as an arc surface facing away from the locking ring protrusion.

According to some embodiments of the utility model, the driving assembly further comprises a fixing plate, the driving piece is fixed on the fixing plate, a positioning boss is arranged on one side surface of the fixing plate, the positioning boss extends to be annular, and the driving ring plate is rotatably sleeved on the positioning boss.

According to some embodiments of the utility model, the positioning boss is provided with a plurality of limit guide posts, the limit guide posts are arranged at intervals along the circumferential direction of the positioning boss, and the locking ring is sleeved outside the limit guide posts.

According to some embodiments of the utility model, the brake locking mechanism further comprises a pressure plate fixedly connected with the fixed plate and arranged on a side of the locking ring facing away from the drive ring plate.

According to some embodiments of the utility model, the drive comprises: the cylinder body, piston and piston rod, the piston is movably located in the cylinder body, the one end of piston rod with the piston links to each other, the piston rod stretches out be formed with first fixed part on the part of cylinder body, the drive ring board is equipped with the second fixed part that radially outwards extends, the drive ring board passes through the second fixed part with first fixed part links to each other.

According to some embodiments of the utility model, the number of the cylinders is two, the two cylinders are arranged oppositely, two ends of the piston rod respectively extend into the two cylinders to be connected with the pistons in the two cylinders, and the first fixing part is positioned between the two cylinders.

According to some embodiments of the utility model, the second fixing portion includes two lugs arranged at intervals in an axial direction of the drive ring plate, the two lugs being respectively arranged on opposite sides of the piston rod in a radial direction, the two lugs being rotatably connected with the first fixing portion.

A vehicle according to a second aspect of the utility model includes a brake lock mechanism according to the first aspect of the utility model.

According to the vehicle of the utility model, the brake locking mechanism of the first aspect is arranged, so that the overall performance of the vehicle is improved.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.

Drawings

FIG. 1 is a schematic illustration of a brake locking mechanism according to an embodiment of the present utility model, wherein the brake locking mechanism is in a locked state;

FIG. 2 is a schematic view of another angle of the brake locking mechanism shown in FIG. 1;

FIG. 3 is a schematic illustration of another state of the brake locking mechanism according to an embodiment of the present utility model, wherein the brake locking mechanism is in an unlocked state;

FIG. 4 is a schematic view of another angle of the brake locking mechanism shown in FIG. 3;

FIG. 5 is an exploded view of a brake locking mechanism according to an embodiment of the present utility model;

fig. 6 is a schematic view of the drive ring plate shown in fig. 5.

Reference numerals:

100. a brake lock mechanism;

10. a ratchet wheel; 11. ratchet tooth slot;

20. a locking ring; 21. a tooth portion;

30. a drive assembly; 31. a driving member; 311. a cylinder; 312. a piston; 313. a piston rod; 3131. a first fixing portion; 32. driving the annular plate; 321. a second fixing portion; 322. a drive column; 3221. a groove; 33. a fixing plate;

40. and (5) pressing plates.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative and intended to explain the present utility model and should not be construed as limiting the utility model.

A brake lock mechanism 100 according to an embodiment of the first aspect of the present utility model is described below with reference to fig. 1 to 5.

As shown in fig. 1 to 5, a brake lock mechanism 100 according to an embodiment of the first aspect of the present utility model includes: the ratchet wheel 10, the locking ring 20 and the driving assembly 30, wherein the ratchet wheel 10 is used for being fixedly connected with a piece to be braked, and a ratchet groove 11 is formed on the outer peripheral surface of the ratchet wheel 10; the locking ring 20 is sleeved on the radial outer side of the ratchet wheel 10, the inner side surface of the locking ring 20 is provided with a tooth part 21, the locking ring 20 can move relative to the ratchet wheel 10 along the axial direction of the ratchet wheel 10 between a locking position and an unlocking position, the tooth part 21 is matched in the ratchet groove 11 in the locking position, and the tooth part 21 is separated from the ratchet groove 11 in the axial direction of the ratchet wheel 10 in the unlocking position; a drive assembly 30 is coupled to the locking ring 20 for driving the locking ring 20 between the locked and unlocked positions.

Specifically, the ratchet 10 and the to-be-braked member are coaxially arranged, the ratchet 10 is sleeved on the radial outer side of the to-be-braked member, the ratchet 10 is fixedly connected with the to-be-braked member, and the to-be-braked member and the ratchet 10 synchronously rotate. The locking ring 20 only moves along the axial direction of the ratchet wheel 10, and when in a locking position, the tooth part 21 of the locking ring 20 is matched in the ratchet groove 11, and the locking ring 20 limits the circumferential movement of the ratchet wheel 10, so that the rotation of a piece to be braked can be limited, and the locking of the piece to be braked is realized; in the unlocking position, the driving assembly 30 drives the locking ring 20 to move in a direction away from the ratchet 10, so that the tooth portion 21 of the locking ring 20 is axially separated from the ratchet slot 11, and at this time, the locking ring 20 cannot limit the circumferential movement of the ratchet 10, so that the ratchet 10 and the member to be braked can rotate normally. The driving assembly 30 provides driving force for the movement of the locking ring 20 between the locking position and the unlocking position, and the driving assembly 30 can drive the locking ring 20 to reciprocate between the locking position and the unlocking position.

Wherein, the locking ring 20 and the ratchet 10 simple structure, production is convenient, and the equipment is convenient, and then utilizes the cooperation of tooth portion 21 and ratchet tooth groove 11 of locking ring 20 and break away from the locking of realizing locking mechanism 100 and unlock, can reduce the required part of production locking mechanism 100, reduces the production complexity and the work complexity of locking mechanism 100, and then can reduce the manufacturing cost of locking mechanism 100, simplifies the working process of locking mechanism 100, and then can improve the reliability of locking mechanism 100.

Alternatively, the member to be braked may be a drive shaft for transmitting power.

When the driving mode needs to be switched to lock a certain part of the transmission system, the driving assembly 30 can drive the locking ring 20 to move towards the ratchet wheel 10, so that the tooth part 21 is matched in the ratchet groove 11, the ratchet wheel 10 cannot rotate along the axial direction, and further, a piece to be braked fixedly connected with the ratchet wheel 10 cannot rotate along the axial line, and therefore locking of the piece to be braked can be achieved.

When the driving mode needs to be switched to unlock a certain part of the transmission system, the driving assembly 30 can drive the locking ring 20 to move away from the ratchet wheel 10, so that the tooth part 21 is separated from the ratchet tooth groove 11, the ratchet wheel 10 can rotate along the axial direction, and further, a piece to be braked fixedly connected with the ratchet wheel 10 can rotate along the axis freely, and unlocking of the piece to be braked can be achieved.

According to the brake locking mechanism 100 provided by the embodiment of the utility model, through the arrangement of the locking ring 20 and the ratchet 10, the locking and unlocking of the locking mechanism 100 can be realized, and further, the switching of a driving mode can be realized, meanwhile, the structural parts of the locking mechanism 100 can be reduced, and further, the production convenience of the locking mechanism 100 can be improved, the production cost of the locking mechanism 100 is reduced, the working process of the locking mechanism 100 is simplified, and the working reliability of the locking mechanism 100 is improved; in addition, by providing the lock ring 20 radially outside the ratchet 10, the space ratio of the lock mechanism 100 in the radial direction and the axial direction can be reduced, and the structural compactness of the lock mechanism 100 can be improved, so that the space utilization rate inside the transmission can be improved.

According to some embodiments of the present utility model, as shown in fig. 5, the number of ratchet grooves 11 is plural, the plurality of ratchet grooves 11 are arranged at intervals in the circumferential direction of the ratchet 10, the number of teeth 21 is plural, the plurality of teeth 21 are arranged at intervals in the circumferential direction of the lock ring 20, and the number of teeth 21 is equal to or less than the number of ratchet grooves 11. Specifically, in the locking position, the teeth 21 are engaged in the ratchet grooves 11, where the plurality of teeth 21 engage with the plurality of ratchet grooves 11 to lock the ratchet 10, so that the locking mechanism 100 can disperse the force of the teeth 21 in the circumferential direction during locking, which is beneficial for the locking ring 20 to bear higher torque, and further can improve the safety factor of the operation of the locking mechanism 100.

For example, the number of the ratchet grooves 11 and the number of the teeth 21 may be two, three or more, and the number of the teeth 21 may be equal to or less than the number of the ratchet grooves 11, and the number of the teeth 21 may be designed according to the driving force of the ratchet 10.

Further, the locking ring 20 and the ratchet 10 are coaxially arranged, and the locking ring 20 and the ratchet 10 can be processed and installed at one time, so that the consistency of the locking ring 20 and the ratchet 10 can be improved, the matching precision of the locking ring 20 and the ratchet 10 can be further improved, and the working precision of the locking mechanism 100 can be further improved.

According to some embodiments of the present utility model, as shown in fig. 1 and 3, the driving assembly 30 includes: the driving piece 31 and the driving ring plate 32, the driving piece 31 links to each other with the driving ring plate 32 and is used for driving the rotation of driving ring plate 32 around the central axis of ratchet 10, wherein, is equipped with drive portion on the driving ring plate 32, is equipped with the cooperation portion on the locking ring 20, and the driving ring plate 32 cooperates with the cooperation portion through drive portion in order to drive the axial displacement of locking ring 20 along ratchet 10. Wherein, the driving part is connected with the matching part, so that the rotation motion of the driving ring plate 32 can be converted into the reciprocating motion of the locking ring 20, and the locking ring 20 can move along a straight line at the locking position and the unlocking position, so that the locking and unlocking of the locking mechanism 100 can be realized.

Further, the driving member 31 may be of various types, for example, hydraulic driving, motor driving, or the like.

According to some embodiments of the present utility model, as shown in fig. 5 to 6, one of the driving part and the mating part is formed as a bump and the other is formed as a groove 3221, the groove 3221 extends along the circumferential direction of the driving ring plate 32, two side walls of the groove 3221 in the axial direction of the driving ring plate 32 are a first side wall and a second side wall, respectively, each of which extends obliquely toward one side in the axial direction of the driving ring plate 32 in the circumferential direction of the driving ring plate 32.

That is, if the driving portion is formed as a bump, the engaging portion is formed as a groove 3221, if the engaging portion is formed as a bump, the driving portion is formed as a groove 3221, wherein the structure of the bump and the groove 3221 is relatively simple, the manufacturing is convenient, and the cost is low, and further, the bump and the groove 3221 are engaged to drive the locking ring 20 to move along the circumferential direction of the ratchet 10, so that the manufacturing difficulty and the production cost of the locking mechanism 100 can be reduced. In addition, both side walls of the groove 3221 extend obliquely toward one side in the axial direction of the drive ring plate 32, so that the lock ring 20 can be moved toward the ratchet 10 along the axis or away from the ratchet 10, and further locking and unlocking of the ratchet 10 by the lock ring 20 can be achieved.

According to some embodiments of the present utility model, as shown in fig. 5, the driving ring plate 32 and the locking ring 20 are arranged in an axial direction of the driving ring plate 32, the driving ring plate 32 is formed with a plurality of driving posts 322 protruding toward the locking ring 20, the plurality of driving posts 322 are arranged at intervals along a circumferential direction of the driving ring plate 32, and grooves 3221 are formed at an inner side surface of the driving posts 322 in a radial direction of the driving ring plate 32. Specifically, the driving ring plate 32 and the locking ring 20 are rotatably connected through the groove 3221 and the protruding block, the groove 3221 is formed on the inner side surface of the driving column 322 in the radial direction of the driving ring plate 32, that is, the diameter size of the locking ring 20 is smaller than that of the driving ring plate 32, and the locking ring 20 is sleeved on the radial inner side of the driving ring plate 32, so that the structural compactness of the locking mechanism 100 can be improved, the space occupation ratio of the locking mechanism 100 is reduced, and the space utilization rate of the gearbox is improved.

For example, the number of drive posts 322 can be two, three, and more. Wherein, a plurality of driving posts 322 can increase the stability of the cooperation of the locking ring 20 and the driving ring plate 32, and then can ensure the movement of the locking ring 20 in the axial direction, thereby improving the working stability and safety of the locking mechanism 100.

According to some embodiments of the present utility model, as shown in fig. 6, a side wall of the groove 3221 facing away from the locking ring 20 is formed as an arc surface protruding toward the locking ring 20, and the other side wall of the groove 3221 facing toward the locking ring 20 is formed as an arc surface protruding away from the locking ring 20. Wherein, the cambered surface can increase the smoothness of the movement of the groove 3221 relative to the bulge, and further can reduce the rotating resistance of the driving ring plate 32, thereby reducing the energy loss of the driving piece 31 and effectively improving the working efficiency of the locking mechanism 100.

According to some embodiments of the present utility model, as shown in fig. 5, the driving assembly 30 further includes a fixing plate 33, the driving member 31 is fixed on the fixing plate 33, a positioning boss is disposed on a side surface of the fixing plate 33, the positioning boss extends into a ring shape, and the driving ring plate 32 is rotatably sleeved on the positioning boss. Wherein the fixing plate 33 is formed as a support of the entire locking mechanism 100, providing a supporting function and an installation space for the entire locking mechanism 100; the positioning boss may be used to define the mounting location of the drive ring plate 32, facilitating assembly of the locking mechanism 100; meanwhile, the positioning boss can also limit the movement track of the driving ring plate 32, so that the driving ring plate 32 can rotate along the axial direction of the positioning boss.

Optionally, a through hole in the axial direction is formed in the middle of the positioning boss, so that the to-be-braked piece can be conveniently penetrated through the through hole and fixedly connected with the ratchet 10.

Optionally, the fixing plate 33, the driving ring plate 32, the locking ring 20 and the ratchet 10 are coaxially arranged, so that the structural compactness and stability of the locking mechanism 100 can be increased, and meanwhile, the precision of the locking mechanism 100 can be increased, and further, the locking and unlocking accuracy of the locking mechanism 100 can be improved.

According to some embodiments of the present utility model, as shown in fig. 5, a plurality of limit guide posts are disposed on the positioning boss, the plurality of limit guide posts are arranged at intervals along the circumferential direction of the positioning boss, and the locking ring 20 is sleeved outside the plurality of limit guide posts. The limiting guide post extends along the axial direction of the positioning boss towards the locking ring 20, is arranged between two adjacent tooth parts 21 of the locking ring 20, can play a role in guiding the locking ring 20, can limit the movement track of the locking ring 20, and can ensure that the locking ring 20 is only movable along the axial direction of the ratchet wheel 10, so that the normal operation of the locking structure can be ensured.

For example, the number of limit posts may be two, three, or more.

According to some embodiments of the present utility model, as shown in fig. 5, the brake locking mechanism 100 further includes a pressing plate 40, and the pressing plate 40 is fixedly connected with the fixing plate 33 and disposed on a side of the locking ring 20 facing away from the driving ring plate 32. Wherein, fixed plate 33 and gearbox casing fixed connection, and then clamp plate 40 and fixed plate 33 fixed connection effectively avoid driving ring plate 32 and locking ring 20 to drop in the axial to can guarantee locking mechanism 100's normal work.

According to some embodiments of the utility model, as shown in fig. 5, the driving member 31 includes: the cylinder 311, the piston 312 and the piston rod 313, the piston 312 is movably arranged in the cylinder 311, one end of the piston rod 313 is connected with the piston 312, a first fixing part 3131 is formed on a part of the piston rod 313 extending out of the cylinder 311, the driving ring plate 32 is provided with a second fixing part 321 extending outwards along the radial direction, and the driving ring plate 32 is connected with the first fixing part 3131 through the second fixing part 321. The cylinder 311 may be filled with pressure oil, and the pressure oil may drive the piston 312 to move in the cylinder 311, so as to drive the piston rod 313 to move, and the piston rod 313 moves to drive the drive ring plate 32 to rotate, so as to drive the lock ring 20 to move on the axis, thereby realizing locking and releasing of the locking mechanism 100 to the transmission system, and completing switching of the driving modes.

According to some embodiments of the present utility model, as shown in fig. 5, the number of the cylinders 311 is two, the two cylinders 311 are disposed opposite to each other, both ends of the piston rod 313 extend into the two cylinders 311 to be connected to the pistons 312 in the two cylinders 311, respectively, and the first fixing portion 3131 is located between the two cylinders 311. Specifically, the two cylinders 311 are oppositely arranged in the radial direction of the driving ring plate 32, and the two cylinders 311 can both accommodate pressure oil, so that the driving member 31 is a double-acting hydraulic cylinder, and can provide output strokes in two directions, so that the piston rod 313 can reciprocate in the radial direction of the driving ring plate 32, and further can drive the driving ring plate 32 to rotate around the axis, thereby realizing locking and unlocking of the ratchet 10 by the locking ring 20. The double-acting hydraulic cylinder has a simple structure and reliable operation, so that a speed reducing device can be omitted when the double-acting hydraulic cylinder is used for realizing reciprocating motion, a transmission gap is avoided, the double-acting hydraulic cylinder moves stably, and the operation reliability of the locking mechanism 100 can be improved.

Further, the two cylinders 311 are connected to the low pressure oil circuit in the original system of the vehicle, so that the locking and unlocking of the locking mechanism 100 can be achieved by pushing the piston rod 313 to move in the radial direction of the driving ring plate 32 by using the pressure in the low pressure oil circuit in the original system, and thus, the use of external components, such as additional hydraulic or electronic driving devices, can be reduced, and the space occupation ratio and the production cost of the locking mechanism 100 can be reduced.

According to some embodiments of the present utility model, as shown in fig. 5, the second fixing portion 321 includes two lugs spaced apart in an axial direction of the driving ring plate 32, the two lugs being disposed at opposite sides of the piston rod 313 in a radial direction, respectively, and the two lugs being rotatably connected with the first fixing portion 3131. In this way, the piston rod 313 can be facilitated to drive the driving ring plate 32 to rotate, and meanwhile, the two lugs can also increase the connection stability of the driving ring plate 32 and the piston rod 313, so that the normal operation of the driving ring plate 32 is ensured.

A vehicle according to an embodiment of the second aspect of the utility model includes a brake lock mechanism 100 according to an embodiment of the first aspect of the utility model.

According to the vehicle of the embodiment of the present utility model, by providing the brake lock mechanism 100 of the embodiment of the first aspect described above, the overall performance of the vehicle is improved.

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", "axial", "radial", "circumferential", 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 being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore 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 such feature. In the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; the device can be mechanically connected, electrically connected and communicated; 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 description of the present specification, a description referring to terms "one embodiment," "some 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 present utility model. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.

While embodiments of the present utility model have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the utility model, the scope of which is defined by the claims and their equivalents.

Claims (13)

1. A brake locking mechanism, comprising:

the ratchet wheel is used for being fixedly connected with a piece to be braked, and a ratchet slot is formed on the outer circumferential surface of the ratchet wheel;

the locking ring is sleeved on the radial outer side of the ratchet wheel, the inner side surface of the locking ring is provided with a tooth part, the locking ring can move relative to the ratchet wheel along the axial direction of the ratchet wheel between a locking position and an unlocking position, the tooth part is matched in the ratchet tooth groove in the locking position, and the tooth part is separated from the ratchet tooth groove in the axial direction of the ratchet wheel in the unlocking position;

and the driving assembly is connected with the locking ring and used for driving the locking ring to move between the locking position and the unlocking position.

2. The brake locking mechanism of claim 1, wherein the number of the ratchet grooves is plural, the plural ratchet grooves are arranged at intervals in a circumferential direction of the ratchet wheel, the number of the teeth is plural, the plural teeth are arranged at intervals in a circumferential direction of the locking ring, and the number of the teeth is equal to or less than the number of the ratchet grooves.

3. The brake locking mechanism of claim 1, wherein the drive assembly comprises: the driving piece is connected with the driving ring plate and used for driving the driving ring plate to rotate around the central axis of the ratchet wheel,

the driving ring plate is provided with a driving part, the locking ring is provided with a matching part, and the driving ring plate is matched with the matching part through the driving part to drive the locking ring to move along the axial direction of the ratchet wheel.

4. A brake locking mechanism according to claim 3, wherein one of the driving portion and the engaging portion is formed as a projection and the other is formed as a groove extending in a circumferential direction of the drive ring plate, two side walls of the groove in an axial direction of the drive ring plate are a first side wall and a second side wall, respectively, each of which extends obliquely toward one side in the axial direction of the drive ring plate.

5. The brake locking mechanism as recited in claim 4, wherein the drive ring plate and the lock ring are arranged in an axial direction of the drive ring plate, the drive ring plate is formed with a plurality of drive posts protruding toward the lock ring, the plurality of drive posts are arranged at intervals in a circumferential direction of the drive ring plate, and the grooves are formed in an inner side surface of the drive posts in a radial direction of the drive ring plate.

6. The brake locking mechanism of claim 5, wherein a side wall of the groove facing away from the locking ring is formed as an arc surface facing toward the locking ring projection, and another side wall of the groove facing toward the locking ring is formed as an arc surface facing away from the locking ring projection.

7. The brake locking mechanism of claim 3, wherein the drive assembly further comprises a fixed plate, the drive member is fixed on the fixed plate, a positioning boss is arranged on one side surface of the fixed plate, the positioning boss extends to be annular, and the drive ring plate is rotatably sleeved on the positioning boss.

8. The brake locking mechanism of claim 7, wherein the positioning boss is provided with a plurality of limit guide posts, the plurality of limit guide posts are arranged at intervals along the circumferential direction of the positioning boss, and the locking ring is sleeved outside the plurality of limit guide posts.

9. The brake locking mechanism of claim 7, further comprising a pressure plate fixedly coupled to the fixed plate and disposed on a side of the locking ring facing away from the drive ring plate.

10. The brake locking mechanism of any one of claims 3-9, wherein the driver comprises: the piston is movably arranged in the cylinder body, one end of the piston rod is connected with the piston, a first fixing part is formed on the part of the piston rod extending out of the cylinder body,

the driving ring plate is provided with a second fixing part extending outwards in the radial direction, and the driving ring plate is connected with the first fixing part through the second fixing part.

11. The brake locking mechanism as recited in claim 10, wherein the number of said cylinders is two, said two cylinders are disposed in opposition, both ends of said piston rod extend into said two cylinders respectively to connect said pistons in said two cylinders, and said first fixing portion is located between said two cylinders.

12. The brake locking mechanism of claim 11, wherein the second fixed portion includes two lugs arranged at intervals in an axial direction of the drive ring plate, the two lugs being respectively arranged on opposite sides of the piston rod in a radial direction, the two lugs being rotatably connected with the first fixed portion.

13. A vehicle comprising a brake lock mechanism according to any one of claims 1 to 12.