Electromechanical brake device, vehicle

Abstract

An electromechanical brake device and a vehicle, wherein the electromechanical brake device comprises a rotary drive mechanism, a brake drive mechanism, a brake actuating mechanism and an instruction output module, the rotary drive mechanism comprises a first rotary drive assembly and a second rotary drive assembly which are not synchronous, the brake drive mechanism comprises a self-locking one-way transmission assembly, a rotary part, a rotary translation part and a locking release assembly, the instruction output module outputs brake instructions and release instructions, controls the first rotary drive assembly or the second rotary drive assembly to work, so that the brake actuating mechanism increases or reduces the brake force, the double drive is used to independently control the increase of the brake force and the reduction of the brake force, the frequent positive and negative output in the process of switching the increase of the brake force and the reduction of the brake force can be avoided, and the service life can be prolonged. Meanwhile, compared with the previous hydraulic brake mode, the device only needs to be connected with the wheel, does not need to arrange a brake oil pipe, has a simple structure and fast response speed.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of vehicle braking devices, in particular to an electronic mechanical braking device and a vehicle. BACKGROUND

[0002] A vehicle braking system is a system that applies a certain braking force to the wheels of a vehicle to forcibly brake the vehicle to a certain extent. The braking process makes the vehicle travel according to the requirements of the driver or the controller to forcibly decelerate or even stop, or makes the stopped vehicle stable on various road conditions (such as a slope), or keeps the speed of the downhill vehicle stable.

[0003] The braking system usually adopts a hydraulic braking system, which is composed of a master cylinder, a slave cylinder and a brake oil pipe connected between the master cylinder and the slave cylinder to form a closed pressure transmission system. When the brake pedal is depressed, the piston of the master cylinder moves forward, the pressure of the brake fluid in the master cylinder rises, enters the slave cylinder of each wheel through the brake oil pipe, and pushes the piston of the slave cylinder to expand outward, realizing the transmission of the force of the stepped brake to the wheel brake, and pushing the wheel brake to implement braking. When the brake pedal is released, the piston of the master cylinder is returned under the action of the oil pressure and the return spring, the piston of the slave cylinder and the wheel brake are returned, and the braking of the wheel is released. The hydraulic braking system needs to be connected through a long brake oil pipe and needs to be controlled by valve elements, which leads to a complex structure, large space occupation and other problems. At the same time, since the brake fluid needs to be transmitted through the brake oil pipe to a certain displacement, the braking response is slow and the safety is poor. SUMMARY

[0004] The technical problem solved by the present application is to provide an electronic mechanical braking device and a device to simplify the structure, improve the braking response speed and improve the safety.

[0005] According to a first aspect of the present application, the present application provides an electronic mechanical braking device, comprising:

[0006] The rotating drive mechanism comprises a first rotating drive component and a second rotating drive component that are not synchronized.

[0007] The brake driving mechanism comprises a self-locking one-way transmission assembly, a rotating member, a rotating and translating member and a locking and releasing assembly; the rotating member is connected with the self-locking one-way transmission assembly and the rotating and translating member; the locking and releasing assembly is used to lock the rotating and translating member to limit the circumferential rotation of the rotating and translating member, or release the rotating and translating member to make the rotating and translating member circumferentially rotatable; the self-locking one-way transmission assembly is connected with the first rotating driving assembly; the second rotating driving assembly is connected with the rotating and translating member; when the rotating and translating member is locked by the locking and releasing assembly to limit the circumferential rotation, the first rotating driving assembly outputs a first positive rotation motion and drives the rotating member to rotate through the self-locking one-way transmission assembly; the rotating and translating member converts the rotation motion into a linear motion in a first direction; and the locking and releasing assembly can move synchronously with the rotating and translating member; when the locking and releasing assembly releases the rotating and translating member, the self-locking one-way transmission assembly limits the rotation of the rotating member; the second rotating driving assembly outputs a second positive rotation motion to drive the rotating and translating member to rotate; and the rotating and translating member converts the rotation motion into a linear motion in a second direction.

[0008] The brake executing mechanism is connected with the rotating and translating member and is used to increase the braking force when the rotating and translating member moves linearly in a first direction, and decrease the braking force when the rotating and translating member moves linearly in a second direction.

[0009] The instruction output module is connected with the first rotating driving assembly, the second rotating driving assembly and the locking and releasing assembly; the instruction output module is used to output a braking instruction and a releasing instruction; under the braking instruction, the locking and releasing assembly locks the rotating and translating member, and the first rotating driving assembly outputs a first positive rotation motion; under the releasing instruction, the locking and releasing assembly releases the rotating and translating member, and the second rotating driving assembly outputs a second positive rotation motion.

[0010] In an embodiment, the brake driving mechanism further comprises an elastic body arranged between the rotating and translating member and the brake executing mechanism; when the rotating and translating member outputs a linear motion in a first direction, the elastic body is compressed.

[0011] In an embodiment, the apparatus further comprises a drive fault detection module, an output of the drive fault detection module is electrically connected to an input of the instruction output module, inputs of the drive fault detection module are connected to the first rotary drive assembly and the second rotary drive assembly, the drive fault detection module is configured to detect whether the first rotary drive assembly or the second rotary drive assembly is faulty; if the drive fault detection module detects that the first rotary drive assembly is faulty and the instruction output module outputs a braking instruction, the second rotary drive assembly receives the braking instruction, and the second rotary drive assembly outputs a second reverse rotary motion to drive the rotary translation member to rotate and convert the rotary motion into a linear motion in the first direction; if the drive fault detection module detects that the second rotary drive assembly is faulty and the instruction output module outputs a release instruction, the first rotary drive assembly receives the release instruction, and the first rotary drive assembly outputs a first reverse rotary motion and drives the rotary member to rotate through the self-locking one-way transmission assembly, and the rotary translation member converts the rotary motion into a linear motion in the second direction.

[0012] In an embodiment, the second rotary drive assembly comprises a stator, a stator winding, and a magnetic member, the magnetic member is arranged on the rotary translation member, the stator winding is arranged on the periphery of the magnetic member, and the stator is arranged on the periphery of the stator winding.

[0013] In an embodiment, the locking release assembly comprises a movement driving unit and a sliding unit, the sliding unit is arranged on the movement driving unit, the rotary translation member is provided with a sliding locking portion, the movement driving unit is configured to drive the sliding unit to move towards the rotary translation member to enable the sliding locking portion to be clamped on the sliding unit to lock the rotary translation member, or to drive the sliding unit to move away from the rotary translation member to enable the sliding locking portion to be disengaged from the sliding unit to release the rotary translation member; when the sliding locking portion clamps the sliding unit, the sliding unit is configured to enable the sliding locking portion to output a linear motion parallel to the first direction along the sliding unit.

[0014] In an embodiment, the sliding unit is a sliding rail, a linear direction of the sliding rail is parallel to the first direction; the sliding locking portion is a protrusion extending from a radial direction of the rotary translation member, one end of the protrusion towards the sliding unit is provided with a clamping groove, and the clamping groove is configured to clamp on the sliding rail.

[0015] In an embodiment, the rotary member is a first lead screw, the rotary translation member is a first nut, the first nut is screwed on the first lead screw, and the first lead screw is connected to the self-locking one-way transmission assembly.

[0016] 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 on the second screw rod, and the second nut is connected with the self-locking one-way transmission assembly.

[0017] In one embodiment, the self-locking one-way transmission assembly comprises a worm wheel and a worm, the worm wheel is engaged with the worm, the first rotating driving assembly is connected with the worm, and the worm wheel is connected with the rotating member.

[0018] According to a second aspect of the present application, the present application provides a vehicle comprising the electronic mechanical brake device.

[0019] According to the electronic mechanical brake device and the vehicle of the above embodiments, the service brake assembly brakes the brake disc body, so as to slow down or stop the vehicle body during driving; the parking brake assembly brakes the service transmission assembly, so as to assist braking of the vehicle body when the vehicle body needs to be braked for a long time but cannot stop driving, or when the vehicle body needs to be braked for a long time. In this way, the brake device integrating the service brake and the parking brake is simple and compact in structure, can effectively save the occupied space, and can effectively improve the use safety. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 A structural schematic diagram of the electronic mechanical brake device provided by the present application is shown in the figure;

[0021] Figure 2 A sectional view of the electronic mechanical brake device provided by the present application in one embodiment is shown in the figure;

[0022] Figure 3 A sectional view of the electronic mechanical brake device provided by the present application in another embodiment is shown in the figure. DETAILED DESCRIPTION

[0023] The present application will be further described in detail through specific embodiments and with reference to the drawings. In different embodiments, similar elements are denoted by similar element reference numbers. In the following embodiments, many details are described in order to make the present application better understood. However, those skilled in the art can easily recognize that some features can be omitted in different cases, or can be replaced by other elements, materials, or methods. In some cases, some operations related to the present application are not shown or described in the specification, in order to avoid the core part of the present application being overwhelmed by too much description, and it is not necessary to describe these related operations in detail for those skilled in the art according to the description in the specification and general technical knowledge in the art.

[0024] In addition, features described in the specification, operations or characteristics can be combined in any appropriate manner to form various embodiments. Meanwhile, the steps or actions in the method description can also be sequentially changed or adjusted in a manner that can be apparent to those skilled in the art. Therefore, the various sequences in the specification and the drawings are only for the purpose of clearly describing a certain embodiment, and do not mean that the sequence is necessary, unless otherwise stated that a certain sequence must be followed.

[0025] The serial numbers of the components in the text, such as "first", "second", etc., are only used to distinguish the described objects, and do not have any order or technical meaning. The "connection" and "coupling" in the application include direct and indirect connection (coupling) unless otherwise specified.

[0026] The application provides an electronic mechanical braking device and a vehicle, wherein the electronic mechanical braking device directly integrates an electric motor into a wheel brake to generate braking force, and completely uses electric braking to drive the transmission medium such as hydraulic oil in the traditional hydraulic braking system, which is a completely oil-free and completely electric braking system. Therefore, the electronic mechanical braking device provided by the application does not need to arrange a complex brake oil pipe, improves the response speed, and further improves the safety relative to the traditional hydraulic braking system. Embodiment

[0027] The embodiment provides an electronic mechanical braking device, referring to Figures 1-3 As shown in the figure, the electronic mechanical braking device provided by the embodiment includes a rotary drive mechanism 10, a braking drive mechanism 20, a braking execution mechanism 30, and an instruction output module 40.

[0028] The rotary drive mechanism 10 includes a first rotary drive assembly 11 and a second rotary drive assembly 12 that do not work synchronously, in other words, the first rotary drive assembly 11 works while the second rotary drive assembly 12 stops working, and the second rotary drive assembly 12 works while the first rotary drive assembly 11 stops working.

[0029] In the embodiment, the first rotary drive assembly 11 can output a first forward rotation and a first reverse rotation, and the second rotary drive assembly 12 can output a second forward rotation and a second reverse rotation, wherein the first forward rotation and the first reverse rotation are opposite directions of rotation, and the second forward rotation and the second reverse rotation are opposite directions of rotation, but the first forward rotation and the second forward rotation can be opposite directions of rotation, or can be the same direction of rotation, and similarly, the first reverse rotation and the second reverse rotation can be opposite directions of rotation, or can be the same direction of rotation. For details, please refer to the following embodiments.

[0030] The brake driving mechanism 20 comprises a self-locking one-way transmission assembly 21, a rotating member 22, a rotating and translating member 23 and a locking and releasing assembly 24. The rotating member 22 is connected with the self-locking one-way transmission assembly 21 and the rotating and translating member 23. The first rotating driving assembly 11 is connected with the self-locking one-way transmission assembly 21. The self-locking one-way transmission assembly 21 can transmit the rotating motion output by the first rotating driving assembly 11 to the rotating member 22, but cannot reversely transmit the rotating motion of the rotating member 22 under external force to the self-locking one-way transmission assembly 21. In other words, the self-locking one-way transmission assembly 21 can limit the circumferential rotation of the rotating member 22 when the second rotating driving assembly 12 drives the rotating and translating member 23 to rotate. The locking and releasing assembly 24 is used to lock the rotating and translating member 23 to limit the circumferential rotation of the rotating and translating member 23, or is used to release the rotating and translating member 23 to enable the circumferential rotation of the rotating and translating member 23. The second rotating driving assembly 12 is connected with the rotating and translating member 23.

[0031] When the rotating and translating member 23 is locked by the locking and releasing assembly 24 to limit the circumferential rotation, the first rotating driving assembly 11 outputs the first positive rotating motion, drives the rotating member 21 to rotate through the self-locking one-way transmission assembly 21, the rotating and translating member 23 converts the rotating motion into the linear motion along the first direction, and the locking and releasing assembly 24 can move synchronously with the rotating and translating member 23. When the locking and releasing assembly 24 releases the rotating and translating member 23, the self-locking one-way transmission assembly 21 limits the rotating motion of the rotating member 22, the second rotating driving assembly 12 outputs the second positive rotating motion to drive the rotating and translating member 23 to rotate, and the rotating and translating member 23 converts the rotating motion into the linear motion along the second direction.

[0032] The rotating member 22 can only rotate, and the rotating and translating member 23 can rotate and convert the rotating motion into the linear motion. The first positive rotating motion output by the first rotating driving assembly 11 and the second positive rotating motion output by the second rotating driving assembly 12 respectively represent the rotating directions of the two, but the first positive rotating motion and the second positive rotating motion are not limited to the same rotating direction, i.e., the directions of the two can be the same or not. The first positive rotating motion needs to be determined according to the connection relationship between the first rotating driving assembly 11, the self-locking one-way transmission assembly 21, the rotating member 22, the rotating and translating member 23 and the direction of the linear motion of the rotating and translating member 23. Similarly, the second positive rotating motion needs to be determined according to the connection relationship between the second rotating driving assembly 12 and the rotating and translating member 23 and the direction of the linear motion of the rotating and translating member 23.

[0033] In the embodiment, the first rotary driving assembly 11 outputs the first positive rotary motion only to correspond to the rotary translation member 23 being able to output the linear motion along the first direction, and the second rotary driving assembly 12 outputs the second positive rotary motion only to correspond to the rotary translation member 23 being able to output the linear motion along the second direction, and the rotary directions of the first positive rotary motion and the second positive rotary motion are not limited.

[0034] The brake actuator 30 is connected with the rotary translation member 23, and is used to increase the brake force when the rotary translation member 23 moves linearly along the first direction, and is used to decrease the brake force when the rotary translation member 23 moves linearly along the second direction.

[0035] In the application, when the first rotary driving assembly 11 outputs the first positive rotary motion, the rotary member 22 can be driven to rotate by the self-locking one-way transmission assembly 21, and the rotary translation member 23 can convert the rotary motion of the rotary member 21 into the linear motion along the first direction, so as to increase the brake force of the brake actuator 30. By arranging the self-locking one-way transmission assembly 21, the reverse output of the rotary motion of the rotary member 22 can be avoided, so as to keep the displacement of the rotary translation member 23 moving linearly along the first direction unchanged, thereby keeping the increased brake force of the brake actuator 30 unchanged. The second rotary driving assembly 12 outputs the second positive rotary motion to drive the rotary translation member 23 to rotate, and the rotary translation member 23 can convert the rotary motion into the linear motion along the second direction, so as to decrease the brake force of the brake actuator 30. The rotary translation member 23 rotating has a tendency to drive the rotary member 22 to rotate. Similarly, by arranging the self-locking one-way transmission assembly 21, the reverse output of the rotary tendency of the rotary member 22 can be avoided, so as to keep the displacement of the rotary translation member 23 moving linearly along the second direction unchanged, thereby keeping the decreased brake force of the brake actuator 30 unchanged.

[0036] When the brake force is increased, the vehicle can be decelerated, stopped or parked. When the brake force is decreased, the vehicle can be accelerated. Of course, the deceleration of the vehicle is a changing process, and the brake force for stopping and parking the vehicle is also different, and the size of the brake force needs to be adjusted to achieve the purpose.

[0037] Based on this, the first torque adjusting module and the second torque adjusting module can be arranged, the first torque adjusting module is electrically connected with the first rotating driving assembly 11, and the second torque adjusting module is electrically connected with the second rotating driving assembly 12. The first torque adjusting module is used for adjusting the torque of the first rotating driving assembly 11 outputting the first forward rotation, that is, the torque of the rotation 22 outputting the rotation, and then the displacement of the rotation translation 23 moving along the first direction is indirectly adjusted, so that the size of the increased braking force is adjusted. The second torque adjusting module is used for adjusting the torque of the second rotating driving assembly 12 outputting the second forward rotation, that is, the torque of the rotation translation 23 rotating, and then the displacement of the rotation translation 23 moving along the second direction is indirectly adjusted, so that the size of the reduced braking force is adjusted.

[0038] As shown in Figures 1-3 The brake actuator 30 includes a brake caliper 31 and a brake disc 32. When the rotation translation 23 moves along the first direction, the brake caliper 31 can be gradually clamped to the brake disc 32, the friction between the brake caliper 31 and the brake disc 32 is gradually increased, so that the braking force is increased. When the rotation translation 23 moves along the second direction, the brake caliper 31 can be gradually released to the brake disc 32, the friction between the brake caliper 31 and the brake disc 32 is gradually reduced, so that the braking force is reduced.

[0039] It can be considered that the first direction is the direction of the rotation translation 23 moving towards the brake caliper 31, and the second direction is the direction of the rotation translation 23 moving away from the brake caliper 31.

[0040] The instruction output module 40 is connected with the first rotary driving assembly 11, the second rotary driving assembly 12 and the lock release assembly 24, and is used for outputting brake instructions and release instructions. When the instruction output module 40 outputs the brake instructions, the lock release assembly 24 locks the rotary translation member 23, the first rotary driving assembly 11 outputs the first forward rotary motion, the rotary member 22 is driven to output the rotary motion through the self-locking one-way transmission assembly 21, the rotary translation member 23 converts the rotary motion into the linear motion in the first direction, so that the brake force of the brake actuating mechanism 30 is increased, the self-locking one-way transmission assembly 21 can prevent the rotary member 22 from outputting in the reverse direction, and then the displacement of the linear motion of the rotary translation member 23 in the first direction can be maintained, that is, the size of the brake force of the brake actuating mechanism 30 which is increased can be maintained. When the instruction output module 40 outputs the release instructions, the lock release assembly 24 releases the rotary translation member 23, the second rotary driving assembly 12 outputs the second forward rotary motion, and drives the rotary translation member 23 to output the rotary motion, at this time, the rotary member 22 can be prevented from outputting in the reverse direction under the action of the self-locking one-way transmission assembly 21, and then the rotary translation member 23 can convert the rotary motion into the linear motion in the second direction, so that the brake force of the brake actuating mechanism 30 is reduced, and the displacement of the linear motion of the rotary translation member 23 in the second direction can be maintained, that is, the size of the brake force of the brake actuating mechanism 30 which is reduced can be maintained.

[0041] In the present application, the first rotary driving assembly 11 and the second rotary driving assembly 12 adopt driving motors, when the instruction output module 40 outputs the brake instructions, the first rotary driving assembly 11 can be controlled to work, and then the brake actuating mechanism 30 can realize the purpose of increasing the brake force, when the instruction output module 40 outputs the release instructions, the second rotary driving assembly 12 can be controlled to work, and then the brake actuating mechanism 30 can realize the purpose of reducing the brake force, in this way, the double driving is adopted to independently control the increase and reduction of the brake force, which can avoid the frequent forward and reverse output of only one rotary driving assembly in the process of switching the increase and reduction of the brake force, and can prolong the service life of the rotary driving assembly. At the same time, compared with the previous hydraulic braking mode, the device only needs to be connected with the wheel, does not need to arrange the brake oil pipe, has a simple structure, and has a high response speed.

[0042] In an embodiment, the electromechanical brake device provided by the application further comprises an elastic body 50 arranged between the rotary translation member 23 and the brake actuator 30. When the rotary translation member 23 outputs the linear motion in the first direction, the elastic body 50 is compressed. In other words, when the instruction output module 40 outputs the brake instruction, the lock release assembly 24 locks the rotary translation member 23 to limit the circumferential rotation of the rotary translation member 23, the first rotary drive assembly 11 outputs the first positive rotation motion, and drives the rotary member 22 to output the rotary motion through the self-locking one-way transmission assembly 21, and the rotary translation member 23 converts the rotary motion output by the rotary member 22 into the linear motion in the first direction, thereby compressing the elastic body 50. In the process of compressing the elastic body 50, the elastic body 50 is compressed to slowly increase the brake force of the brake actuator 30. In this process, the first rotary drive assembly 11 can always output the first positive rotation motion for the brake force adjustment process, and the phenomenon of locked-rotor does not occur, which can effectively prolong the service life of the first rotary drive assembly.

[0043] In the embodiment, the elastic body 50 can be a butterfly spring. Of course, in other embodiments, other elastic bodies that can be compressed and reset can also be used, such as a spiral spring, a rubber spring, etc.

[0044] In an embodiment of the application, if one of the first rotary drive assembly 11 or the second rotary drive assembly 12 fails, the brake and unbrake functions can be realized through the working of the rotary drive assembly that does not fail. Referring to FIG. 6, the electromechanical brake device provided by the embodiment further comprises a drive fault detection module 60, the output end of the drive fault detection module 60 is electrically connected with the input end of the instruction output module 40, and the input end of the drive fault detection module 60 is connected to the first rotary drive assembly 11 and the second rotary drive assembly 12. The drive fault detection module 60 is used to detect whether the first rotary drive assembly 11 or the second rotary drive assembly 12 fails. Figure 2

[0045] If the drive fault detection module 60 detects that the first rotary drive assembly 11 fails, and the instruction output module 40 outputs the brake instruction, the second rotary drive assembly 12 receives the brake instruction, and the second rotary drive assembly 12 outputs the second reverse rotation motion to drive the rotary translation member 23 to rotate and convert the rotary motion into the linear motion in the first direction. In the embodiment, when the second rotary drive assembly 12 outputs the second positive rotation motion, the rotary translation member 23 can convert the rotary motion into the linear motion in the second direction. Based on this, it can be understood that the second positive rotation motion and the second reverse rotation motion output by the second rotary drive assembly 12 are in opposite rotational directions, thereby outputting the linear motion in different directions.

[0046] ​If the drive fault detection module 60 detects a fault in the second rotary drive assembly 12, and the command output module 40 outputs a release command, then the first rotary drive assembly 11 receives the release command. Furthermore, the first rotary drive assembly 11 outputs a first reverse rotary motion and drives the rotating component 22 to rotate via the self-locking one-way transmission assembly 21. The rotary translation component 23 converts the rotary motion into linear motion along the second direction. In this embodiment, when the first rotary drive assembly 11 outputs a first forward rotary motion and drives the rotating component 22 to rotate via the self-locking one-way transmission assembly 21, the rotary translation component 23 can convert the rotary motion into linear motion along the first direction. Based on this, it can be understood that the first forward rotary motion and the first reverse rotary motion output by the first rotary drive assembly 11 are also opposite in direction, thus enabling the output of linear motion in different directions.

[0047] In one embodiment of this application, the second rotary drive assembly 12 includes: a stator 121, a stator winding 122, and a magnetic element 123. The magnetic element 123 is disposed on the rotary translation member 23, the stator winding 122 is disposed around the magnetic element 123, and the stator 121 is disposed around the stator winding 122. In this embodiment, the rotary translation member 23 can function as a rotor. Based on this, the second rotary drive assembly 12, consisting of the stator 121, the stator winding 122, the magnetic element 123, and the rotary translation member 23, can save installation space.

[0048] Of course, in other embodiments, a rotor can also be provided in the second rotary drive assembly 12, and the rotor can be connected to the rotary translation member 23, which can also save installation space and achieve the purpose of driving the rotary translation member 23 to rotate.

[0049] See also Figure 2 and Figure 3 As shown, the locking-release assembly 24 includes a movement drive unit 241 and a sliding unit 242. The sliding unit 242 is disposed on the movement drive unit 241. The rotating translation member 23 is provided with a sliding locking part 231. The movement drive unit 241 is used to drive the sliding unit 242 to move toward the rotating translation member 23, so that the sliding locking part 231 is engaged with the sliding unit 242 to lock the rotating translation member 23. Alternatively, the movement drive unit 241 can be driven to move away from the rotating translation member 23, so that the sliding locking part 231 disengages from the sliding unit 242 to release the rotating translation member 23. When the sliding locking part 231 engages the sliding unit 242, the sliding locking part 231 can output a linear motion parallel to the first direction along the sliding unit 242, so that the locking-release assembly 24 can move synchronously with the linear motion of the rotating translation member 23 when locking the rotating translation member 23.

[0050] In the embodiment, the sliding unit 242 is a sliding rail, and a straight line direction of the sliding rail is parallel to the first direction. The sliding locking portion 231 is a protrusion extending from a radial direction of the rotary translation member 23, and a clamping groove is arranged at one end of the protrusion facing the sliding unit, so as to be clamped on the sliding rail, thereby ensuring that the sliding locking portion 231 cannot be separated from the sliding unit 242, and ensuring stability during synchronous movement.

[0051] In the preferred embodiment, the movement driving unit 241 comprises a lead screw 2411, a lead screw nut 2412 and a lead screw motor 2413.

[0052] As shown in FIG. 1, Figure 2 In one embodiment of the present application, the rotary member 22 is a first lead screw 221, the rotary translation member 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 with the self-locking one-way transmission assembly 21. In this way, the first nut 232 can convert rotary motion into linear motion along the length direction of the first lead screw 221. Based on this, the first direction or the second direction of the linear motion of the first nut 232 is along the two opposite directions of the length of the first lead screw 221.

[0053] As shown in FIG. 2, Figure 3 In another embodiment of the present application, the rotary member 22 is a second nut 222, the rotary translation member 23 is a second lead screw 233, the second nut 222 is screwed on the second lead screw 233, and the second nut 222 is connected with the self-locking one-way transmission assembly 21. In this way, the second nut 222 can convert rotary motion into linear motion along the length direction of the second lead screw 233. Based on this, the first direction or the second direction of the linear motion of the second nut 222 is along the two opposite directions of the length of the second lead screw 233.

[0054] In the above embodiments, the first lead screw 221 and the first nut 232, and the second lead screw 233 and the second nut 222 are both provided with a ball bearing.

[0055] In other embodiments, a roller can also be arranged between the first lead screw 221 and the first nut 232, and between the second lead screw 233 and the second nut 222, which can also achieve the purpose of transmission.

[0056] Continuing to refer to FIGS. 1 and 2, Figure 2 and Figure 3 The self-locking one-way transmission assembly 21 comprises a worm wheel 211 and a worm 212. The worm wheel 211 is engaged with the worm 212. The first rotary driving assembly 11 is connected with the worm 212, and the worm wheel 211 is connected with the rotary member 22.

[0057] In one embodiment, the rotary member 22 can be the first lead screw 221 or the second nut 222. The worm wheel 211 is coaxially connected with the first lead screw 221 or the second nut 222. Embodiment

[0058] The embodiment provides a vehicle, comprising the electronic mechanical brake device in the above embodiment, all functions and features of the electronic mechanical brake device have been described in the above embodiment, and details are not described herein.

[0059] To sum up, the electronic mechanical brake device and the vehicle provided by the application can brake the brake disc body, so that the vehicle body in motion is decelerated and stopped; the parking brake assembly brakes the driving assembly, so that the vehicle body is assisted to brake 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. In this way, the brake device integrating the service brake and the parking brake is formed, which not only has a simple and compact structure, can effectively save the occupied space, but also can effectively improve the use safety.

[0060] The above application of specific examples is used to help understand the application and does not limit the application. For those skilled in the art to which the application belongs, according to the idea of the application, a number of simple deductions, deformations or substitutions can be made.

Claims

1. An electromechanical brake device characterized by comprising: The brake system comprises: a rotating driving mechanism, comprising a first rotating driving component and a second rotating driving component which are not synchronous; a brake driving mechanism, comprising a self-locking one-way transmission component, a rotating part, a rotating and translating part, and a locking and releasing component; the rotating part is connected with the self-locking one-way transmission component and the rotating and translating part; the locking and releasing component is used to lock the rotating and translating part to limit the circumferential rotation of the rotating and translating part, or release the rotating and translating part to make the rotating and translating part circumferentially rotatable; the self-locking one-way transmission component is connected with the first rotating driving component, and the second rotating driving component is connected with the rotating and translating part; when the rotating and translating part is locked by the locking and releasing component to limit the circumferential rotation, the first rotating driving component outputs a first positive rotating motion, drives the rotating part to rotate through the self-locking one-way transmission component, the rotating and translating part converts the rotating motion into a linear motion in a first direction, and the locking and releasing component can move synchronously with the rotating and translating part; when the locking and releasing component releases the rotating and translating part, the self-locking one-way transmission component limits the rotating motion of the rotating part, the second rotating driving component outputs a second positive rotating motion to drive the rotating and translating part to rotate, and the rotating and translating part converts the rotating motion into a linear motion in a second direction; a brake executing mechanism, connected with the rotating and translating part, used to increase the brake force when the rotating and translating part moves linearly in the first direction, and decrease the brake force when the rotating and translating part moves linearly in the second direction; an instruction output module, connected with the first rotating driving component, the second rotating driving component, and the locking and releasing component, used to output a brake instruction and a release instruction; under the brake instruction, the locking and releasing component locks the rotating and translating part, and the first rotating driving component outputs a first positive rotating motion; under the release instruction, the locking and releasing component releases the rotating and translating part, and the second rotating driving component outputs a second positive rotating motion.

2. The electromechanical brake apparatus of claim 1, wherein Further comprising: an elastic body, arranged between the rotating and translating part and the brake executing mechanism; when the rotating and translating part outputs a linear motion in the first direction, the elastic body is compressed.

3. The electromechanical brake apparatus of claim 1, wherein Further comprising: A drive fault detection module, an output end of the drive fault detection module is electrically connected with an input end of the instruction output module, input ends of the drive fault detection module are connected to the first rotary drive assembly and the second rotary drive assembly, and the drive fault detection module is used for detecting whether the first rotary drive assembly or the second rotary drive assembly is faulty. If the drive fault detection module detects that the first rotary drive assembly is faulty, and the instruction output module outputs a braking instruction, the second rotary drive assembly receives the braking instruction, and the second rotary drive assembly outputs a second reverse rotary motion to drive the rotary translation member to rotate and convert the rotary motion into a linear motion in the first direction.

4. The electromechanical brake apparatus of claim 1, wherein If the drive fault detection module detects that the second rotary drive assembly is faulty, and the instruction output module outputs a release instruction, the first rotary drive assembly receives the release instruction, and the first rotary drive assembly outputs a first reverse rotary motion and drives the rotary member to rotate through the self-locking one-way transmission assembly, and the rotary translation member converts the rotary motion into a linear motion in the second direction.

5. The electromechanical brake apparatus of claim 1, wherein The second rotary drive assembly comprises a stator, a stator winding, and a magnetic member, the magnetic member is arranged on the rotary translation member, the stator winding is arranged on the periphery of the magnetic member, and the stator is arranged on the periphery of the stator winding.

6. The electromechanical brake apparatus of claim 5, wherein, The locking release assembly comprises a moving drive unit and a sliding unit, the sliding unit is arranged on the moving drive unit, the rotary translation member is provided with a sliding locking portion, the moving drive unit is used for driving the sliding unit to move towards the rotary translation member to enable the sliding locking portion to be clamped on the sliding unit to lock the rotary translation member, or to drive the sliding unit to move away from the rotary translation member to enable the sliding locking portion to be separated from the sliding unit to release the rotary translation member, and the sliding unit can enable the sliding locking portion to output a linear motion parallel to the first direction along the sliding unit when the sliding locking portion clamps the sliding unit.

7. The electromechanical brake apparatus of claim 1, wherein The sliding unit is a sliding rail, the linear direction of the sliding rail is parallel to the first direction, the sliding locking portion is a protrusion extending from the radial direction of the rotary translation member, one end of the protrusion towards the sliding unit is provided with a clamping groove for clamping on the sliding rail.

8. The electromechanical brake apparatus of claim 1, wherein, The rotary member is a first lead screw, the rotary translation member is a first nut, the first nut is screwed on the first lead screw, and the first lead screw is connected with the self-locking one-way transmission assembly.

9. The electromechanical brake apparatus of claim 1, wherein, The rotary member is a second nut, the rotary translation member is a second lead screw, the second nut is screwed on the second lead screw, and the second nut is connected with the self-locking one-way transmission assembly.

10. A vehicle characterized by comprising: The self-locking one-way transmission assembly comprises a worm wheel and a worm, the worm wheel is engaged with the worm, the first rotary drive assembly is connected with the worm, and the worm wheel is connected with the rotary member. The electronic mechanical brake device comprises: The electronic mechanical brake device according to any one of claims 1-9.

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