CN115817437A

CN115817437A - Electromechanical brake device and vehicle

Info

Publication number: CN115817437A
Application number: CN202211484926.3A
Authority: CN
Inventors: 施国标; 孙惠春; 韩冲; 刘鑫旺; 曹景昭; 王军; 王文伟
Original assignee: Shenzhen Automotive Research Institute of Beijing University of Technology
Current assignee: Shenzhen Automotive Research Institute of Beijing University of Technology
Priority date: 2022-11-24
Filing date: 2022-11-24
Publication date: 2023-03-21

Abstract

An electromechanical brake device, a vehicle, wherein the electromechanical brake device includes: a rotary drive mechanism comprising: a first rotary drive assembly and a second rotary drive assembly operating asynchronously; a brake actuation mechanism comprising: the self-locking type one-way transmission component comprises a self-locking type one-way transmission component, a rotating translation component and a locking release component; a brake actuator; and an instruction output module. The command output module outputs a braking command and a removing command, and controls the first rotary driving component or the second rotary driving component to work, so that the braking executing mechanism increases the braking force or reduces the braking force. Meanwhile, compared with the traditional hydraulic braking mode, the device only needs to be connected with wheels, does not need to arrange a braking oil pipe, and is simple in structure and high in response speed.

Description

Electromechanical brake device and vehicle

Technical Field

The invention relates to the technical field of vehicle braking devices, in particular to an electronic mechanical braking device and a vehicle.

Background

A vehicle brake system is a system that applies a certain braking force to the wheels of a vehicle, thereby performing a certain degree of forced braking thereon. The braking process is used for forcibly decelerating or even stopping the running vehicle according to the requirements of a driver or a controller through the action of a control system, or stably parking the stopped vehicle under various road conditions (such as a slope), or keeping the speed of the vehicle running on a downhill stable.

The brake system usually adopts a hydraulic brake system, and the hydraulic brake system is a closed pressure transmission system consisting of a master cylinder, a slave cylinder and a brake oil pipe connected in front of the master cylinder and the slave cylinder. When the brake pedal is stepped on, the piston of the master cylinder moves forward, the pressure of brake fluid in the master cylinder is increased, the brake fluid enters the slave cylinders of all wheels through the brake oil pipe, the pistons of the slave cylinders are pushed to expand, the transmission of the force of the foot-stepping brake to the wheel brakes is realized, and the wheel brakes are pushed to brake. When the brake pedal is released, the master cylinder piston returns under the action of oil pressure and a return spring, and the slave cylinder piston and the wheel brake return to release the brake of the wheel. This hydraulic braking system need connect through longer braking oil pipe to need through valve class component control, and then lead to the structure comparatively complicated, occupation space big scheduling problem, simultaneously, because brake fluid need pass through certain displacement of braking oil pipe transmission, and then lead to the braking response slow, the security is relatively poor.

Disclosure of Invention

The invention mainly solves the technical problem of providing an electromechanical braking device and a device, so as to simplify the structure, improve the braking response speed and improve the safety.

According to a first aspect of the present application, there is provided an electromechanical braking device comprising:

a rotary drive mechanism comprising: a first rotary drive assembly and a second rotary drive assembly operating asynchronously;

a brake actuation mechanism comprising: the self-locking type one-way transmission component comprises a self-locking type one-way transmission component, a rotating translation component and a locking release component; the locking and releasing assembly is used for locking the rotating and translating piece to limit the circumferential rotation of the rotating and translating piece, or releasing the rotating and translating piece to enable the rotating and translating piece to rotate circumferentially; the self-locking one-way transmission assembly is connected with the first rotary driving assembly, and the second rotary driving assembly is connected with the rotary translation piece; when the rotating and translating part is locked by the locking and releasing component to limit circumferential rotation, the first rotating and driving component outputs first forward rotating motion and drives the rotating part to rotate through the self-locking one-way transmission component, the rotating and translating part converts the rotating motion into linear motion along a first direction, and the locking and releasing component can synchronously move along with the rotating and translating part; when the locking and releasing assembly releases the rotating and translating piece, the self-locking type one-way transmission assembly limits the rotating piece to do rotating motion, the second rotating and driving assembly outputs second positive rotating motion to drive the rotating and translating piece to do rotating motion, and the rotating and translating piece converts the rotating motion into linear motion along a second direction;

the brake actuating mechanism is connected with the rotary translation piece and used for increasing the braking force when the rotary translation piece makes linear motion along a first direction and reducing the braking force when the rotary translation piece makes linear motion along a second direction;

the instruction output module is connected with the first rotary driving assembly, the second rotary driving assembly and the locking release assembly and is used for outputting a braking instruction and a releasing instruction; under the braking instruction, the locking and releasing assembly locks the rotary translation piece, and the first rotary driving assembly outputs a first positive rotary motion; under the release instruction, the locking and releasing assembly releases the rotary translation piece, and the second rotary driving assembly outputs a second positive rotary motion.

In one embodiment, the method further comprises: an elastic body disposed between the rotational-translation member and the brake actuator; the elastic member is compressed when the rotary-translation member outputs a linear motion in a first direction.

In one embodiment, the method further comprises: the output end of the driving fault detection module is electrically connected with the input end of the instruction output module, the input ends of the driving fault detection modules are connected to the first rotary driving assembly and the second rotary driving assembly, and the driving fault detection module is used for detecting whether the first rotary driving assembly or the second rotary driving assembly fails; if the driving fault detection module detects that the first rotary driving component has a fault and the command output module outputs a braking command, the second rotary driving component receives the braking command and outputs a second reverse rotary motion to drive the rotary translation component to rotate and convert the rotary motion into linear motion along a first direction; if the driving fault detection module detects that the second rotary driving component has a fault and the instruction output module outputs a removing instruction, the first rotary driving component receives the removing instruction, outputs a first reverse rotary motion and drives the rotary part to do rotary motion through the self-locking type one-way transmission component, and the rotary translation part converts the rotary motion into linear motion along a second direction.

In one embodiment, the second rotary drive assembly comprises: the stator comprises a stator, a stator winding and a magnetic part, wherein the magnetic part is arranged on the rotating translation part, the stator winding is arranged on the periphery of the magnetic part, and the stator is arranged on the periphery of the stator winding.

In one embodiment, the latch release assembly comprises: the sliding unit is arranged on the moving driving unit, a sliding locking part is arranged on the rotational translation piece, and the moving driving unit is used for driving the sliding unit to move towards the direction of the rotational translation piece so as to enable the sliding locking part to be clamped on the sliding unit to lock the rotational translation piece, or driving the sliding unit to move towards the direction departing from the rotational translation piece so as to enable the sliding locking part to be separated from the sliding unit to release the rotational translation piece; the sliding unit may cause the slide locking portion to output a linear motion parallel to the first direction along the sliding unit when the slide locking portion holds the sliding unit.

In one embodiment, the sliding unit is a sliding rail, and the linear direction of the sliding rail is parallel to the first direction; the sliding locking part is a protrusion extending in the radial direction of the rotating translation piece, the protrusion faces to one end of the sliding unit, and a clamping groove is used for clamping the sliding rail.

In one embodiment, the rotating member is a first screw rod, the rotating translation member is a first nut, the first nut is screwed to the first screw rod, and the first screw rod is connected with the self-locking one-way transmission assembly.

In one embodiment, the rotating member is a second nut, the rotating and translating member is a second screw rod, the second nut is screwed to the second screw rod, and the second nut is connected with the self-locking one-way transmission assembly.

In one embodiment, the self-locking one-way transmission assembly comprises: the worm wheel is meshed with the worm, the first rotary driving assembly is connected with the worm, and the worm wheel is connected with the rotating piece.

According to a second aspect of the present application, there is provided a vehicle comprising: the electromechanical brake device is provided.

According to the electromechanical braking device and the vehicle of the embodiment, the service braking component can brake the brake disc body, so that the vehicle body in running is decelerated and stopped; the parking brake assembly brakes the service transmission assembly, so that when the vehicle body needs to be braked for a long time but cannot stop running, or when the vehicle body needs to be braked for a long time, the vehicle body is subjected to auxiliary braking. Therefore, the braking device integrating the service braking and the parking braking is formed, the structure is simple and compact, the occupied space can be effectively saved, and the use safety can be effectively improved.

Drawings

FIG. 1 is a schematic structural diagram of an electromechanical brake apparatus provided in the present application;

FIG. 2 is a cross-sectional view of an electromechanical brake device provided herein in one embodiment;

FIG. 3 is a cross-sectional view of an electromechanical brake device provided herein in another embodiment.

Detailed Description

The present invention will be described in further detail with reference to the following detailed description and accompanying drawings. Wherein like elements in different embodiments are numbered with like associated elements. In the following description, numerous specific details are set forth in order to provide a better understanding of the present application. However, those skilled in the art will readily recognize that some of the features may be omitted or replaced with other elements, materials, methods in different instances. In some instances, certain operations related to the present application have not been shown or described in detail in order to avoid obscuring the core of the present application from excessive description, and it is not necessary for those skilled in the art to describe these operations in detail, so that they may be fully understood from the description in the specification and the general knowledge in the art.

Furthermore, the features, operations, or characteristics described in the specification may be combined in any suitable manner to form various embodiments. Also, the various steps or actions in the method descriptions may be transposed or transposed in order, as will be apparent to one of ordinary skill in the art. Thus, the various sequences in the specification and drawings are for the purpose of describing certain embodiments only and are not intended to imply a required sequence unless otherwise indicated where such sequence must be followed.

The numbering of the components as such, e.g., "first", "second", etc., is used herein only to distinguish the objects as described, and does not have any sequential or technical meaning. The term "connected" and "coupled" as used herein includes both direct and indirect connections (couplings), unless otherwise specified.

The application provides an electromechanical brake device and a vehicle, wherein the electromechanical brake device directly integrates a motor into a wheel brake to generate braking force, and the electromechanical brake completely drives force transmission media such as hydraulic oil in a traditional hydraulic brake system and is a complete electric brake system without oil. So, the electromechanical brake device that this application provided for traditional hydraulic braking system, need not to arrange complicated braking oil pipe, improve response speed, and then improve the security.

The first embodiment,

The present embodiment provides an electromechanical braking device, and as shown in fig. 1 to fig. 3, the electromechanical braking device provided by the present embodiment includes: a rotation driving mechanism 10, a brake driving mechanism 20, a brake executing mechanism 30 and a command output module 40.

The rotary drive mechanism 10 includes: the first rotary drive assembly 11 and the second rotary drive assembly 12 operate asynchronously, in other words, when the first rotary drive assembly 11 operates, the second rotary drive assembly 12 stops operating, and when the second rotary drive assembly 12 operates, the first rotary drive assembly 11 stops operating.

In this embodiment, the first rotary driving assembly 11 can output a first forward rotary motion and a first reverse rotary motion, and the second rotary driving assembly 12 can output a second forward rotary motion and a second reverse rotary motion, wherein the first forward rotary motion and the first reverse rotary motion are rotary motions in opposite directions, and the second forward rotary motion and the second reverse rotary motion are rotary motions in opposite directions, but the first forward rotary motion and the second forward rotary motion may be rotary motions in opposite directions or rotary motions in the same direction, and similarly, the first reverse rotary motion and the second reverse rotary motion may be rotary motions in opposite directions or rotary motions in the same direction. Refer specifically to the examples below.

The brake drive mechanism 20 includes: a self-locking one-way transmission component 21, a rotating component 22, a rotating translation component 23 and a locking release component 24. The rotating part 22 is connected with both the self-locking unidirectional transmission component 21 and the rotational translation part 23, the first rotational driving component 11 is connected with the self-locking unidirectional transmission component 21, the self-locking unidirectional transmission component 21 can transmit the rotational motion output by the first rotational driving component 11 to the rotating part 22, but cannot reversely transmit the rotational motion of the rotating part 22 under the action of external force to the self-locking unidirectional transmission component 21, in other words, the self-locking unidirectional transmission component 21 can limit the circumferential rotation of the rotating part 22 when the second rotational driving component 12 drives the rotational translation part 23 to make rotational motion. The lock release assembly 24 is used to lock the rotation-translation member 23 to restrict the rotation of the rotation-translation member 23 circumferentially, or the lock release assembly 24 is used to release the rotation-translation member 23 to allow the rotation-translation member 23 to rotate circumferentially. The second rotary drive assembly 12 is connected to a rotary translator 23.

When the rotation and translation member 23 is locked by the locking and releasing assembly 24 to limit circumferential rotation, the first rotation driving assembly 11 outputs a first forward rotation motion, and drives the rotation member 21 to rotate through the self-locking type one-way transmission assembly 21, the rotation and translation member 23 converts the rotation motion into a linear motion along a first direction, and the locking and releasing assembly 24 can move synchronously with the rotation and translation member 23. When the locking and releasing component 24 releases the rotating and translating part 23, the self-locking type one-way transmission component 21 limits the rotating part 22 to do the rotating motion, the second rotating and driving component 12 outputs the second positive rotating motion to drive the rotating and translating part 23 to do the rotating motion, and the rotating and translating part 23 converts the rotating motion into the linear motion along the second direction.

The rotary part 22 can only do rotary motion, and the rotary-translational part 23 can do rotary motion and can convert the rotary motion into linear motion. The first forward rotation motion output by the first rotation driving component 11 and the second forward rotation motion output by the second rotation driving component 12 respectively represent rotation directions of the first rotation driving component and the second rotation driving component, but the first forward rotation motion and the second forward rotation motion are not limited to have the same rotation direction, that is, the directions of the first forward rotation motion and the second forward rotation motion may be the same or different. The first forward rotation motion needs to be determined according to the connection relationship between the first rotation driving component 11 and the self-locking unidirectional transmission component 21, the rotating component 22 and the rotation translation component 23, and the direction of the linear motion of the rotation translation component 23, and similarly, the second forward rotation motion needs to be determined according to the connection relationship between the second rotation driving component 12 and the rotation translation component 23, and the direction of the linear motion of the rotation translation component 23.

In this embodiment, the first rotational driving component 11 outputs the first forward rotational motion, and only the corresponding rotational translation component 23 can output the linear motion along the first direction, and the second rotational driving component 12 outputs the second forward rotational motion, and only the corresponding rotational translation component 23 can output the linear motion along the second direction, and the rotational directions of the first forward rotational motion and the second forward rotational motion are not limited herein.

The brake actuator 30 is connected to the rotary-translational member 23, and the brake actuator 30 is configured to increase a braking force when the rotary-translational member 23 is linearly moved in the first direction and decrease the braking force when the rotary-translational member 23 is linearly moved in the second direction.

In the application, when the first rotation driving assembly 11 outputs the first forward rotation motion, the rotation member 22 can be driven to rotate by the self-locking type one-way transmission assembly 21, and the rotation translation member 23 can convert the rotation motion of the rotation member 21 into the linear motion along the first direction, i.e. the braking force of the braking executing mechanism 30 can be increased, and by arranging the self-locking type one-way transmission assembly 21, the reverse output rotation motion of the rotation member 22 can be avoided, i.e. the displacement of the rotation translation member 23 which makes the linear motion along the first direction can be kept unchanged, so that the size of the braking force increased by the braking executing mechanism 30 can be kept unchanged. The second rotation driving assembly 12 outputs a second forward rotation motion to drive the rotation translation member 23 to rotate, and the rotation translation member 23 can convert the rotation motion into a linear motion along the second direction, so that the braking force of the brake actuating mechanism 30 can be reduced, the rotation translation member 23 which performs the rotation motion has a tendency of driving the rotation member 22 to rotate, and similarly, through the arrangement of the self-locking type one-way transmission assembly 21, the reverse output of the rotation tendency of the rotation member 22 can be avoided, that is, the displacement of the rotation translation member 23 which performs the linear motion along the second direction can be kept unchanged, so that the magnitude of the braking force reduced by the brake actuating mechanism 30 can be kept unchanged.

When the braking force is increased, the vehicle can be decelerated, stopped and parked, and when the braking force is reduced, the vehicle can be accelerated. Of course, deceleration of the vehicle is a changing process, and the braking force for stopping and parking the vehicle is different in magnitude, and both needs to be realized by adjusting the magnitude of the braking force.

In this respect, a first torque control module and a second torque control module can be provided, the first torque control module being electrically connected to the first rotary drive assembly 11 and the second torque control module being electrically connected to the second rotary drive assembly 12. The first torque adjusting module is configured to adjust a magnitude of a torque of the first rotational driving component 11 outputting the first forward rotational motion, that is, the magnitude of the torque of the rotational motion output by the rotating component 22 can be adjusted, and further, a magnitude of displacement of the rotational translation component 23 performing a linear motion along the first direction can be indirectly adjusted, so as to adjust a magnitude of the increased braking force. The second torque adjusting module is configured to adjust a magnitude of a second forward rotational motion output by the second rotational driving component 12, that is, the magnitude of the rotational motion torque of the rotational/translational member 23 can be adjusted, and then the magnitude of the linear motion displacement of the rotational/translational member 23 along the second direction is indirectly adjusted, so as to adjust a magnitude of the reduced braking force.

As shown in fig. 1-3, the brake actuator 30 includes a brake caliper 31 and a brake disc 32, and when the rotary-translational member 23 moves linearly in a first direction, the brake caliper 31 is driven to gradually clamp the brake disc 322, so as to gradually increase the friction force between the brake caliper 31 and the brake disc 32, thereby increasing the braking force; when the rotary translational member 22 moves linearly in the second direction, the brake caliper 31 can be driven to gradually release the brake disc 32, so as to gradually reduce the friction force between the brake disc 32 and the brake caliper, thereby reducing the braking force.

It is considered that the first direction is the direction in which the rotation/translation member 23 moves toward the caliper 31, and the second direction is the direction in which the rotation/translation member 23 moves away from the caliper 31.

The instruction output module 40 is connected with the first rotary driving assembly 11, the second rotary driving assembly 12 and the locking release assembly 24, and the instruction output module 40 is used for outputting a braking instruction and a releasing instruction. When the instruction output module 40 outputs a braking instruction, the locking release assembly 24 locks the rotational translation member 23, the first rotational driving assembly 11 outputs a first forward rotational motion, the rotational member 22 is driven by the self-locking type one-way transmission assembly 21 to output a rotational motion, and the rotational translation member 23 converts the rotational motion into a linear motion along the first direction, so that the braking force of the braking actuator 30 is increased, the self-locking type one-way transmission assembly 21 can prevent the rotational member 22 from outputting reversely, further, the displacement of the linear motion of the rotational translation member 23 along the first direction can be maintained, and the increased braking force of the braking actuator 30 can be maintained. When the instruction output module 40 outputs a release instruction, the locking release assembly 24 releases the rotational translation member 23, the second rotational driving assembly 12 outputs a second forward rotational motion, and drives the rotational translation member 23 to output a rotational motion, at this time, the reverse output of the rotational member 22 can be prevented under the action of the self-locking type one-way transmission assembly 21, and then the rotational motion of the rotational translation member 23 can be converted into a linear motion along the second direction, so that the braking force of the brake actuating mechanism 30 is reduced, the displacement of the rotational translation member 23 along the linear motion along the second direction is maintained, and the reduced braking force of the brake actuating mechanism 30 can be maintained.

In the application, the first rotary driving assembly 11 and the second rotary driving assembly 12 adopt driving motors, when the instruction output module 40 outputs a braking instruction, the first rotary driving assembly 11 can be controlled to work, and further the braking executing mechanism 30 can achieve the purpose of increasing the braking force, when the instruction output module 40 outputs a release instruction, the second rotary driving assembly 12 can be controlled to work, and further the braking executing mechanism 30 can achieve the purpose of reducing the braking force, so that the mode of respectively and independently controlling the increasing and reducing the braking force by adopting double drives can be avoided, the frequent positive and negative outputs of only one rotary driving assembly in the process of switching the increasing and reducing the braking force can be avoided, and the service life of the rotary driving assembly can be prolonged. Meanwhile, compared with the traditional hydraulic braking mode, the device only needs to be connected with wheels, does not need to arrange a braking oil pipe, and is simple in structure and response to the speed block.

In one embodiment, the electromechanical brake device provided by the present application further includes: and the elastic body 50, wherein the elastic body 50 is arranged between the rotating and translating part 23 and the brake actuating mechanism 30. When the rotary-translational member 23 outputs a linear motion in the first direction, the elastic member 50 is compressed. In other words, when the command output module 40 outputs a braking command, the locking release assembly 24 locks the rotating-translating member 23 to limit circumferential rotation of the rotating-translating member 23, the first rotating driving assembly 11 outputs a first forward rotating motion, and drives the rotating member 22 to output a rotating motion through the self-locking one-way transmission assembly 21, the rotating-translating member 23 converts the rotating motion output by the rotating member 22 into a linear motion along the first direction, so as to compress the elastic member 50, and in the process of compressing the elastic member 50, the elastic member 50 is compressed to slowly increase the braking force of the braking actuator 30, and in this process, the first rotating driving assembly 11 can always output the first forward rotating motion for the braking force adjusting process, so that the phenomenon of rotation blockage does not occur, and the service life of the first rotating driving assembly can be effectively prolonged.

In this embodiment, the elastic member 50 may be a belleville spring, but in other embodiments, other elastic members that can be compressed and restored may be used, such as a coil spring, a rubber spring, etc.

In one embodiment of the present application, if one of the first rotary drive assembly 11 or the second rotary drive assembly 12 fails, the functions of braking and releasing the brake can be realized by the operation of the non-failed rotary drive assembly. Referring to fig. 2, the electromechanical brake device provided in this embodiment further includes: and the output end of the driving fault detection module 60 is electrically connected with the input end of the instruction output module 40, the input ends of the driving fault detection module 60 are connected to the first rotary driving assembly 11 and the second rotary driving assembly 12, and the driving fault detection module 60 is used for detecting whether the first rotary driving assembly 11 or the second rotary driving assembly 12 is in fault.

If the driving failure detection module 60 detects a failure of the first rotational driving component 11 and the command output module 40 outputs a braking command, the second rotational driving component 12 receives the braking command and the second rotational driving component 12 outputs a second reverse rotational motion to drive the rotational translation component 23 to rotate and convert the rotational motion into a linear motion along the first direction. In this embodiment, when the second rotational driving assembly 12 outputs the second forward rotational motion, the rotational translation member 23 can convert the rotational motion into a linear motion along the second direction, and based on this, it can be understood that the second forward rotational motion and the second reverse rotational motion output by the second rotational driving assembly 12 are in a relationship opposite to each other in the rotational direction, so that the linear motions in different directions can be output.

If the driving failure detection module 60 detects a failure of the second rotational driving component 12 and the instruction output module 40 outputs a release instruction, the first rotational driving component 11 receives the release instruction, and the first rotational driving component 11 outputs a first reverse rotational motion and drives the rotating member 22 to rotate through the self-locking unidirectional transmission component 21, and the rotational translation member 23 converts the rotational motion into a linear motion along the second direction. In this embodiment, when the first rotation driving component 11 outputs the first forward rotation motion and drives the rotation element 22 to rotate through the self-locking one-way transmission component 21, the rotation translation element 23 can convert the rotation motion into a linear motion along the first direction.

In one embodiment of the present application, the second rotary drive assembly 12 comprises: a stator 121, a stator winding 122, and a magnetic member 123, the magnetic member 123 being disposed on the rotary-translational member 23, the stator winding 122 being disposed on the outer periphery of the magnetic member 123, and the stator 121 being disposed on the outer periphery of the stator winding 122. In this embodiment, the rotation/translation member 23 can function as a rotor, and the stator 121, the stator winding 122, and the magnetic member 123 are disposed to cooperate with the second rotation/translation member 12 formed by the rotation/translation member 23, so as to save the installation space.

Of course, in other embodiments, a rotor may also be disposed in the second rotary driving assembly 12, and the rotor is connected to the rotary translational member 23, so that the installation space can be saved, and the purpose of driving the rotary translational member 23 to rotate can be achieved.

With continued reference to fig. 2 and 3, the latch release assembly 24 includes: the sliding unit 242 is disposed on the moving driving unit 241, the rotational-translational member 23 is provided with a sliding-locking portion 231, the moving driving unit 241 is configured to drive the sliding unit 242 to move towards the rotational-translational member 23, so that the sliding-locking portion 231 is clamped to the sliding unit 242 to lock the rotational-translational member 23, or the sliding unit 242 is driven to move away from the rotational-translational member 23, so that the sliding-locking portion 231 is separated from the sliding unit 242 to release the rotational-translational member 23. The sliding unit 242 can make the sliding locking portion 231 output a linear motion parallel to the first direction along the sliding unit 242 when the sliding locking portion 231 clamps the sliding unit 242, that is, the locking and releasing assembly 24 can move synchronously with the linear motion of the rotational and translational member 23 when locking the rotational and translational member 23.

In this embodiment, the sliding unit 242 is a sliding rail, and the linear direction of the sliding rail is parallel to the first direction. The sliding locking part 231 is a protrusion extending from the radial direction of the rotating translation piece 23, a clamping groove is arranged at one end of the protrusion facing the sliding unit, and the clamping groove is used for clamping the sliding rail, so that the sliding locking part 231 is prevented from being separated from the sliding unit 242, and the stability during synchronous movement is ensured.

In a preferred embodiment, the moving driving unit 241 includes: a screw 2411, a screw nut 2412 and a screw motor 2413

As shown in fig. 2, in an embodiment of the present application, the rotating element 22 is a first lead screw 221, the rotating and translating element 23 is a first nut 232, the first nut 232 is screwed on the first lead screw 221, and the first lead screw 221 is connected to the self-locking one-way transmission assembly 21, so that the first nut 232 can convert the rotating motion into a linear motion along the length direction of the first lead screw 221, and based on this, the linear motion of the first nut 232 in the first direction or the second direction is two opposite directions along the length of the first lead screw 221.

As shown in fig. 3, in another embodiment of the present application, the rotating element 22 is a second nut 222, the rotating and translating element 23 is a second lead screw 233, the second nut 222 is screwed to the second lead screw 233, and the second nut 222 is connected to the self-locking unidirectional transmission assembly 21, so that the second nut 222 can convert the rotating motion into a linear motion along the length direction of the second lead screw 233, and based on this, the linear motion of the second nut 222 in the first direction or the second direction is two opposite directions along the length direction of the second lead screw 233.

In the above embodiment, balls are provided between the first screw 221 and the first nut 232, and between the second screw 233 and the second nut 222.

In other embodiments, rollers may be disposed between the first lead screw 221 and the first nut 232, and between the second lead screw 233 and the second nut 222, so as to achieve the purpose of transmission.

With continued reference to fig. 2 and 3, the self-locking unidirectional actuator assembly 21 comprises: a worm wheel 211 and a worm 212, the worm wheel 211 being engaged with the worm 212, the first rotary drive assembly 11 being connected with the worm 212, the worm wheel 211 being connected with the rotary member 22.

In one embodiment, the rotating member 22 can be a first screw 221 or a second nut 222, and the worm wheel 211 and the first screw 221 or the second nut 222 are coaxially connected.

Example II,

The present embodiment provides a vehicle including: the electromechanical brake device according to the above embodiment has been described in detail in the above embodiment, and therefore, all functions and features of the electromechanical brake device are not described in detail herein.

In summary, in the electromechanical braking device and the vehicle provided by the application, the service braking component can brake the brake disc body, so that the vehicle body in running is decelerated and stopped; the parking brake assembly brakes the service transmission assembly, so that when the vehicle body needs to be braked for a long time but cannot stop running, or when the vehicle body needs to be braked for a long time, the vehicle body is subjected to auxiliary braking. Therefore, the braking device integrating the service braking and the parking braking is formed, the structure is simple and compact, the occupied space can be effectively saved, and the use safety can be effectively improved.

The present invention has been described in terms of specific examples, which are provided to aid understanding of the invention and are not intended to be limiting. For a person skilled in the art to which the invention pertains, several simple deductions, modifications or substitutions may be made according to the idea of the invention.

Claims

1. An electromechanical brake device, comprising:

2. The electromechanical brake apparatus according to claim 1, further comprising: an elastic body disposed between the rotational-translation member and the brake actuator; the elastic member is compressed when the rotary translation member outputs a linear motion in a first direction.

3. The electromechanical brake apparatus according to claim 1, further comprising: the output end of the driving fault detection module is electrically connected with the input end of the instruction output module, the input ends of the driving fault detection modules are connected to the first rotary driving assembly and the second rotary driving assembly, and the driving fault detection module is used for detecting whether the first rotary driving assembly or the second rotary driving assembly fails; if the driving fault detection module detects that the first rotary driving component has a fault and the command output module outputs a braking command, the second rotary driving component receives the braking command and outputs a second reverse rotary motion to drive the rotary translation component to rotate and convert the rotary motion into linear motion along a first direction; if the driving fault detection module detects that the second rotary driving component has a fault and the instruction output module outputs a removing instruction, the first rotary driving component receives the removing instruction, outputs a first reverse rotary motion and drives the rotary piece to rotate through the self-locking one-way transmission component, and the rotary translation piece converts the rotary motion into linear motion along a second direction.

4. The electromechanical brake apparatus of claim 1, wherein the second rotary drive component comprises: the stator comprises a stator, a stator winding and a magnetic part, wherein the magnetic part is arranged on the rotating translation part, the stator winding is arranged on the periphery of the magnetic part, and the stator is arranged on the periphery of the stator winding.

5. The electromechanical brake apparatus of claim 1, wherein the latch release assembly comprises: the sliding unit is arranged on the moving driving unit, a sliding locking part is arranged on the rotational translation piece, and the moving driving unit is used for driving the sliding unit to move towards the direction of the rotational translation piece so that the sliding locking part is clamped on the sliding unit to lock the rotational translation piece, or driving the sliding unit to move towards the direction departing from the rotational translation piece so that the sliding locking part is separated from the sliding unit to release the rotational translation piece; the sliding unit may cause the slide locking portion to output a linear motion parallel to the first direction along the sliding unit when the slide locking portion holds the sliding unit.

6. The electromechanical brake apparatus of claim 5, wherein said sliding unit is a slide rail, a linear direction of said slide rail being parallel to the first direction; the sliding locking part is a protrusion extending in the radial direction of the rotary translation piece, a clamping groove is formed in one end, facing the sliding unit, of the protrusion, and the clamping groove is used for clamping the sliding rail.

7. The electromechanical brake device of claim 1, wherein the rotating member is a first lead screw, the rotational translation member is a first nut, the first nut is screwed to the first lead screw, and the first lead screw is connected to the self-locking unidirectional transmission assembly.

8. The electromechanical brake device of claim 1, wherein the rotating member is a second nut, the rotational translating member is a second lead screw, the second nut is screwed to the second lead screw, and the second nut is connected to the self-locking unidirectional transmission assembly.

9. The electromechanical brake of claim 1, wherein said self-locking unidirectional actuator assembly comprises: the worm wheel is meshed with the worm, the first rotary driving assembly is connected with the worm, and the worm wheel is connected with the rotating piece.

10. A vehicle, characterized by comprising: electromechanical braking apparatus according to any of claims 1 to 9.