Electromechanical brake device and vehicle

Abstract

The embodiments of the present application provide an electronic mechanical braking device and a vehicle. The electronic mechanical braking device includes a balancing device and two brakes, the two brakes are respectively used to brake the two wheels of the vehicle, and the operation modes of the electronic mechanical braking device include a main braking mode and a secondary braking mode. When the electronic mechanical braking device operates in the main braking mode, the two brakes are respectively used to receive the motor braking force output by the brake motor. When the electronic mechanical braking device operates in the secondary braking mode, the balancing device is used to receive the pedal braking force output by the pedal mechanism of the vehicle and transmit the same braking force to the two brakes respectively. The same braking force can be used to brake the two wheels of the vehicle, thereby preventing the vehicle from drifting, skidding and other out-of-control behaviors, and further improving the reliability of the electronic mechanical braking device.

Description

Technical Field

[0001] The embodiments of the present application relate to the technical field of electromechanical braking, and in particular to an electromechanical braking device and a vehicle. Background Art

[0002] The Electro-Mechanical Braking System (EMB) is a braking system that uses a motor-driven mechanical structure to push the friction plate to clamp the brake disc to produce braking. Among them, when the motor cannot push the friction plate to clamp the brake disc to produce braking, the electronic mechanical braking system can push the friction plate to clamp the brake disc to produce braking through a backup braking mechanism of a purely mechanical mechanism to cope with the braking scenario where the motor cannot output braking force. During the braking process of the backup braking mechanism, the backup braking mechanism receives the pedal braking force output by the pedal mechanism and transmits the braking force to the two friction plates respectively so that the friction plates clamp and brake. However, when the backup braking mechanism is used to brake the vehicle, the vehicle is prone to drifting, tail-spinning and other out-of-control behaviors. Therefore, the braking force output by the backup braking mechanism will affect the reliability of the electronic mechanical braking system, and thus affect the driving safety of the vehicle. Accordingly, how to ensure the reliability of the electronic mechanical braking system has become a problem that needs to be solved urgently. Summary of the invention

[0003] The embodiments of the present application provide an electronic mechanical braking device and a vehicle, which can brake the two wheels of the vehicle with the same braking force, thereby preventing the vehicle from drifting, skidding, or other uncontrolled behaviors, and further improving the reliability of the electronic mechanical braking device.

[0004] The first aspect of the present application provides an electronic mechanical braking device, which is used to brake a vehicle. The electronic mechanical braking device includes a balancing device and two brakes, and the two brakes are used to brake the two wheels of the vehicle respectively. The operation mode of the electronic mechanical braking device includes a main braking mode and an auxiliary braking mode. When the electronic mechanical braking device operates in the main braking mode, the two brakes are used to receive the motor force output by the brake motor respectively. When the electronic mechanical braking device operates in the auxiliary braking mode, the balancing device is used to receive the pedal braking force output by the pedal mechanism of the vehicle and transmit the same braking force to the two brakes respectively.

[0005] When the brake of the electronic mechanical brake device of the embodiment of the present application cannot receive the electric braking force output by the brake motor, the electronic mechanical brake device switches from the main braking mode to the auxiliary braking mode, and the pedal mechanism of the vehicle can transmit the same braking force to the two brakes respectively through the balancing device. Since the two brakes brake one wheel respectively with the same braking force, the vehicle will not drift, skid or other uncontrolled behaviors, which helps to improve the reliability of the electronic mechanical device and further improve the safety of vehicle driving.

[0006] In a possible implementation, the balancing device includes a housing and a lever, wherein the lever is disposed inside the housing. The housing includes an input opening and two output openings, wherein the input opening and the two output openings are respectively used to communicate the inside and the outside of the housing. The lever is used to connect the pedal mechanism and the two brakes, and the pedal braking force of the pedal mechanism transmits the same braking force to the two brakes through the lever.

[0007] Such an arrangement enables the lever member to be connected to the pedal mechanism and the two brakes respectively, thereby enabling the two brakes to receive the same braking force.

[0008] In a possible implementation, the input opening is provided on one side wall of the housing, the two output openings are provided on the other side wall of the housing, the one side wall of the housing is provided opposite to the other side wall of the housing, and the lever is provided between the one side wall of the housing and the other side wall of the housing. Alternatively, the input opening is provided on one side wall of the housing, the two output openings are provided on the other two side walls of the housing respectively, the other two side walls of the housing are provided opposite to each other and are respectively connected to the one side wall of the housing, and the lever is provided between the other two side walls of the housing.

[0009] Such an arrangement can control the connection direction between the lever member and the two brakes, which helps to reduce the difficulty of arranging the balancing device in the vehicle.

[0010] In a possible implementation, the balancing device includes an input steel cable and two output steel cables. The input steel cable connects the pedal mechanism and the lever member through the input opening. One of the output steel cables connects one of the brakes and the lever member through one of the output openings. Another of the output steel cables connects another of the brakes and the lever member through another of the output openings.

[0011] With such an arrangement, the pedal braking force output by the pedal mechanism can be transmitted to the lever member, and the two braking forces transmitted by the lever member can be transmitted to the two brakes respectively.

[0012] In a possible embodiment, the shell member includes an input seal and two output seals. The input seal is a hollow structure, the input seal is sleeved on the input steel cable and movably connected to the input steel cable, one end of the input seal is fixedly connected to the shell member and communicated with the input opening, and the other end of the input seal extends along the axial direction of the input steel cable. The output seal is a hollow structure, the two output seals correspond to the two output steel cables one by one, each of the output seals is sleeved on the corresponding output steel cable and movably connected to the output steel cable, one end of each output seal is fixedly connected to the shell member and communicated with one of the output openings, and the other end of each output seal extends along the axial direction of the output steel cable.

[0013] Such an arrangement can prevent foreign matter such as dust and water outside the shell from entering the accommodating cavity, and can prevent the connection between the lever member and the steel cable from being affected, thereby helping to increase the service life of the balancing device.

[0014] In a possible implementation, the balancing device includes a housing and a lever, the housing is used to fix the balancing device, the lever is disposed inside the housing, and the lever includes an input connection chamber and two output connection chambers. The input connection chamber is used to connect the pedal mechanism, the two output connection chambers are used to connect the two brakes, respectively, the two output connection chambers are arranged on both sides of the input connection chamber along the axis direction of the lever, and the distance between the input connection chamber and one of the output connection chambers is equal to the distance between the input connection chamber and the other output connection chamber.

[0015] Such an arrangement can ensure that the magnitude of the braking force transmitted by the lever member to the two brakes is the same, and the lever member can be connected to the pedal mechanism and the two brakes respectively.

[0016] In a possible implementation, the input connection cavity includes an input through hole, the input through hole is located on the top wall of the lever member and penetrates the lever member along the first direction, the inner wall of the input through hole includes an input through structure, the input through structure penetrates a side wall of the lever member along the second direction, wherein the first direction, the second direction and the axis of the lever member are perpendicular to each other. Each of the output connection cavities includes an output through hole, the output through hole is located on the top wall of the lever member and penetrates the lever member along the first direction, the axis of the output through hole is parallel to the axis of the input through hole and parallel to the first direction, the inner wall of each of the output through holes includes an output through structure, and two of the output through structures penetrate the other two side walls of the lever member respectively along the second direction.

[0017] Such arrangement helps to simplify the structure of the lever member while realizing that the lever member is respectively connected to the pedal mechanism and the two brakes.

[0018] In a possible implementation, the input through structure includes one of the following structures: an annular input port or an annular input hole with a gap. The output through structure includes one of the following structures: an annular output port or an annular output hole with a gap.

[0019] In a possible embodiment, the lever member includes an elongated rod body, the input through hole and the two output through holes are located on the top surface of the rod body and penetrate the rod body along the first direction, the input through structure penetrates one side surface of the rod body along the second direction, and the two output through structures respectively penetrate the other two side surfaces of the rod body along the second direction.

[0020] Such an arrangement can make the lever part an integrated structure, which helps to increase the service life of the lever part.

[0021] In a possible embodiment, the lever member includes an inner plate and two outer plates, the inner plate and the two outer plates are perpendicular to a first direction, the inner plate is located between the two outer plates and are fixedly connected to the two outer plates respectively, the input through hole and the two output through holes respectively penetrate the inner plate and the two outer plates along the first direction, the input through structure penetrates the side wall of the inner plate and at least one of the two outer plates along the second direction, and each of the output through structures penetrates the side wall of the inner plate and at least one of the two outer plates along the second direction.

[0022] Such an arrangement can reduce the difficulty of processing the lever member and help improve the production efficiency of the lever member.

[0023] In a possible implementation, the balancing device includes an input steel cable and two output steel cables. One end of the input steel cable is used to flexibly connect to the input connection cavity, and the other end of the input steel cable is used to connect to the pedal mechanism. One end of each of the output steel cables is used to flexibly connect to one of the output connection cavities, and the other end of each of the output steel cables is used to connect to one of the brakes.

[0024] With such an arrangement, the pedal braking force output by the pedal mechanism can be transmitted to the lever member, and the lever member can transmit the same braking force to the two brakes.

[0025] In a possible implementation, the input steel cable includes an input cable head and an input cable body, the input cable head is a rod-shaped structure and is movably disposed inside the input connection cavity, one end of the input cable body is fixedly connected to the middle of the input cable head, and the other end of the input cable body is used to connect the pedal mechanism. Each of the output steel cables includes an output cable head and an output cable body, the output cable head is a rod-shaped structure and is movably disposed inside the output connection cavity, one end of the output cable body is fixedly connected to the middle of the output cable head, and the other end of the output cable body is used to connect one of the brakes.

[0026] With such arrangement, the lever member can be movably connected to the input steel cable and the output steel cable respectively, and thus the balancing device can transmit the same braking force to the two brakes respectively.

[0027] In a possible implementation, the balancing device includes a housing, a lever, an elastic member, and an input steel cable. The housing is used to fix the balancing device and to accommodate the lever and the elastic member. The lever is used to connect one end of the input steel cable and the two brakes, and the other end of the input steel cable is used to connect the pedal mechanism, and the pedal braking force of the pedal mechanism transmits the same braking force to the two brakes respectively through the lever and the input steel cable. The elastic member is used to restore the displacement of the lever relative to the housing due to the pedal braking force.

[0028] With such arrangement, after the pedal mechanism does not output the pedal braking force, the elastic member can make the lever member return from the current position to the initial position, which can ensure the normal driving of the vehicle. In addition, it can also help the pedal of the pedal mechanism to automatically return to the initial position, thereby helping to increase the safety of vehicle driving.

[0029] In a possible implementation, the elastic member includes a return spring, the return spring is sleeved on the input steel cable and movably connected to the input steel cable, and two ends of the return spring are respectively in contact with the inner wall of the shell member and the lever member.

[0030] Such an arrangement helps to reduce the cost of the elastic member while achieving the return of the lever member.

[0031] In a possible embodiment, the shell member includes a limiting portion, which is a hollow structure and is located inside the shell member, the limiting portion is sleeved on the input steel cable and movably connected to the input steel cable, one end of the limiting portion is fixedly connected to the shell member, and the other end of the limiting portion extends along the axial direction of the input steel cable, and the return spring is sleeved on the outer wall of the limiting portion and abuts against the limiting portion.

[0032] Such an arrangement can prevent the return spring from shaking in its radial direction, so that the return spring will not rub against the input steel cable, which helps to ensure the transmission performance of the input steel cable in transmitting the pedal braking force.

[0033] The second aspect of the present application provides an electronic mechanical brake device, which is used to brake a vehicle. The electronic mechanical brake device includes two balancing devices and four brakes, wherein two of the brakes are respectively used to brake the two front wheels of the vehicle, and the other two brakes are respectively used to brake the two rear wheels of the vehicle. The operation mode of the electronic mechanical brake device includes a main braking mode and an auxiliary braking mode. When the electronic mechanical brake device operates in the main braking mode, the two brakes are used to receive the braking force output by the brake motor or the other two brakes are used to receive the braking force output by the brake motor. When the electronic mechanical brake device operates in the auxiliary braking mode, one of the balancing devices is used to receive the pedal braking force output by the pedal mechanism of the vehicle and transmit the same pedal braking force to the two brakes respectively, or the other balancing device is used to receive the pedal braking force output by the pedal mechanism of the vehicle and transmit the same pedal braking force to the other two brakes respectively.

[0034] When the electronic mechanical brake device provided in the embodiment of the present application operates in the auxiliary brake mode, at least two wheels of the vehicle can be braked to meet different braking requirements. For example, when the vehicle is a heavy truck or off-road vehicle, the four wheels of the vehicle can be braked at the same time to improve the reliability of braking.

[0035] The third aspect of the present application provides a vehicle, comprising a wheel, a pedal mechanism, and an electronic mechanical brake device as described in any one of the first aspect or the second aspect. The balancing device of the electronic mechanical brake device is connected to the pedal mechanism and is used to brake the wheel. By including the electronic mechanical brake device, the normal driving of the vehicle can be ensured, thereby improving the safety of the vehicle driving. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 A schematic diagram of the structure of a vehicle provided in an embodiment of the present application;

[0037] Figure 2 A schematic diagram of the structure of a first electromechanical braking device provided in an embodiment of the present application;

[0038] Figure 3 A schematic diagram of a partial decomposition structure of a first balancing device provided in an embodiment of the present application;

[0039] Figure 4 A three-dimensional structural diagram of a first lever member provided in an embodiment of the present application;

[0040] Figure 5 A front view of a first lever member provided in an embodiment of the present application;

[0041] Figure 6 for Figure 5 Sectional view at AA in the middle;

[0042] Figure 7 A schematic diagram of the structure of an input steel cable provided in an embodiment of the present application;

[0043] Figure 8 A schematic diagram of the structure of an output steel cable provided in an embodiment of the present application;

[0044] Fig. 9 A schematic diagram of a partial decomposition structure of a second balancing device provided in an embodiment of the present application;

[0045] Fig.10 A schematic diagram of the structure of an inner plate provided in an embodiment of the present application;

[0046] Fig.11 A schematic diagram of the structure of an outer panel provided in an embodiment of the present application;

[0047] Fig.12 A schematic diagram of the structure of a second electromechanical braking device provided in an embodiment of the present application.

[0048] Description of reference numerals:

[0049] 100. Electromechanical brake device;

[0050] 10. Balancing device;

[0051] 30. Shell parts;

[0052] 31. Input opening; 32. Output opening;

[0053] 33. Input seal; 331. Input nut; 332. Input sealing tube;

[0054] 34. output sealing member; 341. output connecting pipe; 342. output sealing pipe;

[0055] 35. Shell;

[0056] 40. Lever parts;

[0057] 41. Input connection cavity; 411. Input through hole; 412. Input through structure;

[0058] 42. output connection cavity; 421. output through hole; 422. output through structure;

[0059] 43. Rod body;

[0060] 44, inner plate; 441, input notch; 442, output notch;

[0061] 45, outer panel; 451, input port; 452, output port;

[0062] 50. Input steel cable; 51. Input cable head; 52. Input cable body;

[0063] 60. output steel cable; 61. output cable head; 62. output cable body;

[0064] 70. Elastic parts;

[0065] 20. Brake;

[0066] 200. Vehicles;

[0067] 210. Wheel; 220. Pedal mechanism. DETAILED DESCRIPTION

[0068] Figure 1 A schematic diagram of the structure of a vehicle provided in an embodiment of the present application. Figure 1 As shown, the vehicle 200 provided in the embodiment of the present application may include a wheel 210, a pedal mechanism 220 and an electronic mechanical brake device 100. The electronic mechanical brake device 100 is connected to the pedal mechanism 220, and the electronic mechanical brake device 100 is used to brake the wheel 210 to achieve braking of the vehicle 200.

[0069] Among them, the vehicle 200 can be an electric vehicle / electric vehicle (Electric Vehicle, EV), or it can also be a pure electric vehicle (Pure Electric Vehicle / Battery Electric Vehicle, PEV / BEV), a hybrid electric vehicle (Hybrid Electric Vehicle, HEV), a range extended electric vehicle (Range Extended Electric Vehicle, REEV), a plug-in hybrid electric vehicle (Plug-in Hybrid Electric Vehicle, PHEV), a new energy vehicle (New Energy Vehicle, NEV), etc.

[0070] In the embodiment of the present application, the electronic mechanical brake device 100 may include two brakes 20. The two brakes 20 may brake one wheel 210 respectively. The operation mode of the electronic mechanical brake device 100 may include a main brake mode and a secondary brake mode. When the electronic mechanical brake device 100 operates in the main brake mode, the two brakes 20 are respectively used to receive the motor force output by the brake motor and brake one wheel 210. When the electronic mechanical brake device 100 operates in the secondary brake mode, the two brakes 20 are respectively used to receive the pedal braking force output by the pedal mechanism 220 and brake one wheel 210.

[0071] It is understandable that the main braking mode and the auxiliary braking mode do not operate simultaneously, and the electronic mechanical braking device 100 mainly operates in the main braking mode. The electronic mechanical braking device 100 operates in the auxiliary braking mode only when the brake 20 cannot receive the motor force output by the brake motor.

[0072] When the electronic mechanical brake device 100 operates in the auxiliary brake mode, the magnitude of the pedal braking force received by the two brakes 20 will affect the reliability of the electronic mechanical brake device 100. Among them, when the magnitude of the braking force received by the two brakes 20 is different, the speeds of the two wheels 210 may be different, and then the vehicle 200 may drift, skid, and other uncontrolled behaviors. Therefore, whether the magnitude of the braking force received by the two brakes 20 is the same will affect the reliability of the electronic mechanical brake device 100. Correspondingly, how to ensure the reliability of the electronic mechanical brake device 100 has become a problem to be solved urgently.

[0073] In view of this, an embodiment of the present application provides an electromechanical braking device 100 and a vehicle 200 .

[0074] Among them, when the electronic mechanical braking device 100 provided in the embodiment of the present application operates in the auxiliary braking mode, the braking forces received by the two brakes 20 are the same, which can improve the reliability of the electronic mechanical braking device 100, thereby avoiding the vehicle 200 from drifting, skidding and other out-of-control behaviors, and further improving the driving safety of the vehicle 200.

[0075] It should be noted that the number of brakes 20 of the electronic mechanical brake device 100 includes but is not limited to two, and the number of brakes 20 receiving the braking force when the electronic mechanical brake device 100 operates in the auxiliary brake mode includes at least one brake group, each brake group includes two brakes 20. When the number of wheels 210 of the vehicle 200 is more than two, the two brakes 20 of each brake group can be arranged opposite to each other along the width direction of the vehicle 200.

[0076] The implementation of the electronic mechanical braking device 100 provided in the embodiment of the present application is described below in conjunction with the accompanying drawings.

[0077] Figure 2 This is a schematic diagram of the structure of the first electromechanical brake device provided in the embodiment of the present application. Figure 2 As shown, the electronic mechanical brake device 100 of the embodiment of the present application may include a balancing device 10 and two brakes 20. The balancing device 10 is used to make the pedal mechanism 220 of the vehicle 200 respectively connected to the two brakes 20. The two brakes 20 are respectively used to brake the two wheels 210 of the vehicle 200. The operation mode of the electronic mechanical brake device 100 may include a main braking mode and a secondary braking mode. When the electronic mechanical brake device 100 operates in the main braking mode, the two brakes 20 are respectively used to receive the motor braking force output by the brake motor and brake one wheel 210 to achieve the braking of the vehicle 200. When the electronic mechanical brake device 100 operates in the secondary braking mode, the balancing device 10 is used to receive the pedal braking force output by the pedal mechanism 220 of the vehicle 200 and transmit the same braking force to the two brakes 20 respectively, so that the two brakes 20 brake one wheel 210 respectively to achieve the braking of the vehicle 200.

[0078] It is understandable that when the brake 20 cannot receive the electric braking force output by the brake motor, the electronic mechanical brake device 100 switches from the primary braking mode to the secondary braking mode. Among them, possible factors that cause the brake 20 to be unable to receive the electric braking force may include the power supply on the vehicle 200 being unable to supply current to the brake motor, the power supply on the vehicle 200 failing, the brake motor being damaged, etc.

[0079] In the embodiment of the present application, the specific structure of the brake 20 is not limited here. For example, in some possible implementations, the brake 20 may include a friction plate, a transmission member and a fixing member (not shown in the figure). Among them, the fixing member is used to connect with the body of the vehicle 200, so that the brake 20 is fixed on the vehicle 200. The transmission member is used to make the friction plate transmission-connected with the brake motor and the balancing device 10 respectively. When the electronic mechanical brake device 100 operates in the main braking mode, the brake motor drives the friction plate to move along the axial direction of the wheel 210 through the transmission member, so that the friction plate can clamp the brake disc on the wheel 210. When the electronic mechanical brake device 100 operates in the secondary braking mode, the pedal mechanism 220 drives the friction plate to move along the axial direction of the wheel 210 through the balancing device 10 and the transmission member, so that the friction plate can clamp the brake disc on the wheel 210.

[0080] Figure 3 This is a schematic diagram of the partial decomposition structure of the first balancing device provided in the embodiment of the present application. Figure 3 In some possible implementations, one side wall of the housing 30 is removed to expose the interior of the housing 30. Figure 3As shown, the balancing device 10 may include a housing member 30 and a lever member 40, and the lever member 40 is disposed inside the housing member 30. The housing member 30 includes an input opening 31 and two output openings 32, and the input opening 31 and the two output openings 32 are respectively used to connect the inside and the outside of the housing member 30. The lever member 40 can be connected to the pedal mechanism 220 through the input opening 31, and the lever member 40 can be connected to the two brakes 20 through the two output openings 32. The pedal braking force output by the pedal mechanism 220 can transmit the same braking force to the two brakes 20 through the lever member 40, so that each brake 20 brakes one wheel 210 with the same braking force, which helps to improve the reliability of the electronic mechanical brake device 100.

[0081] In the embodiment of the present application, the housing 30 can be used to connect with the body of the vehicle 200 to fix the balancing device 10 to the body. In addition, the lever 40 is arranged inside the housing 30 to prevent foreign matter outside the housing 30 from affecting the normal operation of the lever 40, ensuring that the balancing device 10 can transmit the same braking force to the two brakes 20 respectively.

[0082] In the embodiment of the present application, the specific structure of the housing 30 is not limited here. For example, in some embodiments, Figure 3 As shown, the housing 30 may include a bottom shell 35 and a cover plate ( Figure 3 The bottom shell 35 and the cover plate together form a cavity, which is used to accommodate the lever member 40, and the inner wall of the cavity includes an input opening 31 and an output opening 32.

[0083] In the embodiment of the present application, there is no limitation on the shape of the input opening 31. For example, in some embodiments, the input opening 31 may be a circular opening.

[0084] In the embodiment of the present application, there is no limitation on the shape of the output opening 32. For example, in some embodiments, the output opening 32 may be a circular opening.

[0085] In some possible implementations, such as Figure 3 As shown, the input opening 31 is provided on one side wall of the housing member 30, the two output openings 32 are provided on the other side wall of the housing member 30, the one side wall of the housing member 30 is arranged opposite to the other side wall of the housing member 30, and the lever member 40 is provided between the one side wall of the housing member 30 and the other side wall of the housing member 30. The connection direction of the lever member 40 and the two brakes 20 can be controlled, which helps to reduce the difficulty of arranging the balancing device 10 in the vehicle 200.

[0086] In addition to being located on two opposite side walls of the housing 30, the input opening 31 and the two output openings 32 may, in some possible implementations, be disposed on one side wall of the housing 30, and the two output openings 32 may be disposed on the other two side walls of the housing 30 (not shown in the figure), respectively, the other two side walls of the housing 30 being disposed opposite to each other and respectively connected to one side wall of the housing 30, and the lever 40 being disposed between the other two side walls of the housing 30. With such a configuration, the structure connecting the lever 40 and the brake 20 may be inclined, which helps to reduce the difficulty of connecting the lever 40 and the brake 20.

[0087] In some possible implementations, such as Figure 3 As shown, the balancing device 10 may include an input steel cable 50 and two output steel cables 60. The input steel cable 50 connects the pedal mechanism 220 and the lever member 40 through the input opening 31. An output steel cable 60 connects one brake 20 and the lever member 40 through an output opening 32. Another output steel cable 60 connects another brake 20 and the lever member 40 through another output opening 32. With such an arrangement, the pedal braking force output by the pedal mechanism 220 can be transmitted to the lever member 40, and the two braking forces transmitted by the lever member 40 can be transmitted to the two brakes 20 respectively.

[0088] It is understandable that the input cable 50 passes through the input opening 31 and is movably connected to the inner wall of the input opening 31 , so that the input cable 50 can move in the input opening 31 , so that the lever member 40 moves toward the input opening 31 to transmit the pedal braking force to the lever member 40 .

[0089] It can be understood that each output steel cable 60 passes through the corresponding output opening 32 and is movably connected to the inner wall of the output opening 32, so that each output steel cable 60 can move in the corresponding output opening 32, so that each output steel cable 60 can transmit the braking force transmitted by the lever member 40 to the corresponding brake 20, ensuring that the two brakes 20 receive the same braking force.

[0090] It should be noted that, in addition to connecting the lever member 40 to the pedal mechanism 220 and the brake 20 respectively through the input steel cable 50 and the output steel cable 60, it can also be achieved through other mechanisms that can transmit force. For example, in some embodiments, the mechanism connecting the lever member 40 and the pedal mechanism 220 may include a connecting cable and a plurality of connecting rods (not shown in the figure). Two adjacent connecting rods are connected by a connecting cable. The pedal mechanism 220 is connected to the connecting rod through a connecting cable. The lever member 40 is connected to the connecting rod through a connecting cable.

[0091] In some possible implementations, such as Figure 3As shown, the housing member 30 may include an input seal 33 and two output seals 34 .

[0092] The input seal 33 is a hollow structure, and the input seal 33 is sleeved on the input steel cable 50 and movably connected with the input steel cable 50, so that the input steel cable 50 can move axially relative to the input seal 33 in the input seal 33. One end of the input seal 33 is fixedly connected to the housing member 30 and communicated with the input opening 31, and the other end of the input seal 33 extends along the axial direction of the input steel cable 50. The input seal 33 can prevent clothes from entering the interior of the housing member 30 from the input opening 31, ensure the normal operation of the lever member 40, and protect the connection between the lever member 40 and the input steel cable 50, thereby helping to increase the service life of the balancing device 10.

[0093] In the embodiment of the present application, the specific structure of the input seal 33 is not limited here. For example, in some embodiments, such as Figure 3 As shown, the input seal 33 may include an input nut 331 and an input sealing tube 332. One end of the input sealing tube 332 is disposed in the input opening 31 and is threadedly connected to the housing 30, and the other end of the input sealing tube 332 extends along the axial direction of the input steel cable 50. The input nut 331 is sleeved on one end of the input sealing tube 332 and is threadedly connected to the input sealing tube 332, and one end of the input nut 331 contacts the outer wall of the housing 30 and can cover the input opening 31. In addition, the length of the input steel cable 50 located outside the housing 30 can be adjusted by adjusting the length of the input sealing tube 332 located in the input opening 31, which is convenient for installation and debugging.

[0094] Since the input cable 50 may bend when it connects the lever member 40 and the pedal mechanism 220, in order to control the direction of the input cable 50, in some embodiments, the input sealing tube 332 may include a threaded section and a rubber section of a hollow structure. The threaded section is used for threaded connection with the housing member 30 and the input nut 331. The rubber section abuts against the body of the vehicle 200 to ensure that the input cable 50 can bend, so as to control the direction of the input cable 50.

[0095] The output seal 34 is a hollow structure, and the two output seals 34 correspond to the two output cables 60 one by one. Each output seal 34 is sleeved on the corresponding output cable 60 and is movably connected to the output cable 60, so that the output cable 60 can move axially relative to the output seal 34 in the corresponding output seal 34. One end of each output seal 34 is fixedly connected to the shell 30 and communicated with an output opening 32, and the other end of each output seal 34 extends along the axial direction of the output cable 60. The output seal 34 can prevent clothes in the outside from entering the interior of the shell 30 from the output opening 32, ensure the normal operation of the lever 40, and protect the connection between the lever 40 and the output cable 60, thereby helping to improve the service life of the balancing device 10.

[0096] In the embodiment of the present application, the specific structure of the output seal 34 is not limited here. For example, in some embodiments, such as Figure 3 As shown, the output seal 34 may include an output connecting tube 341 and an output sealing tube 342. One end of the output connecting tube 341 is disposed in the output opening 32 and is threadedly connected to the housing 30, and the other end of the output connecting tube 341 extends along the axial direction of the output steel cable 60. The output sealing tube 342 is respectively sleeved on the output steel cable 60 and the other end of the output connecting tube 341, and the output sealing tube 342 is threadedly connected to the output connecting tube 341. With the output seal 34 having such a structure, the length of the output steel cable 60 outside the housing 30 can be adjusted by adjusting the axial length of the threaded connection between the output sealing tube 342 and the output connecting tube 341, while achieving sealing of the output opening 32, which is helpful for installation and debugging.

[0097] Since the input cable 50 may bend when the output cable 60 connects the lever member 40 and the brake 20, in order to control the direction of the output cable 60, in some embodiments, the output sealing tube 342 may include a connecting section and a deforming section of a hollow structure. The connecting section is used to seal and connect with the other end of the output connecting tube 341. The deforming section is used to abut against the body of the vehicle 200 to ensure that the output cable 60 passing through the output sealing member 34 can bend, so as to control the direction of the output cable 60.

[0098] Figure 4 A three-dimensional structural diagram of a first lever member provided in an embodiment of the present application, Figure 5 A front view of a first lever member provided in an embodiment of the present application, Figure 6 for Figure 5 In some possible implementations, see Figure 4-Figure 6 As shown, the lever member 40 may include an input connection chamber 41 and two output connection chambers 42. Figure 3As shown, the input connection chamber 41 is used to connect the pedal mechanism 220, and the two output connection chambers 42 are used to connect the two brakes 20 respectively. Figure 3 or Figure 4 The two output connection chambers 42 are arranged on both sides of the input connection chamber 41, and the distance between the input connection chamber 41 and one output connection chamber 42 is equal to the distance between the input connection chamber 41 and the other output connection chamber 42. In this way, the lever member 40 can ensure that the magnitude of the braking force transmitted to the two brakes 20 is the same, and the lever member 40 is connected to the pedal mechanism 220 and the two brakes 20 respectively.

[0099] It can be understood that, through the lever principle: F1*L1=F2*L2, it can be ensured that the magnitude of the braking force transmitted by the lever member 40 to the two brakes 20 is the same. Among them, F1 and F2 are the braking forces transmitted by the lever member 40 to the two brakes 20, L1 is the distance between the input connection chamber 41 and one output connection chamber 42, and L2 is the distance between the input connection chamber 41 and the other output connection chamber 42.

[0100] The use of the input connection chamber 41 to connect with the pedal mechanism 220 helps to reduce the difficulty of connecting the lever member 40 with the pedal mechanism 220 while satisfying the lever principle. Similarly, the use of the output connection chamber 42 to connect with the brake 20 helps to reduce the difficulty of connecting the lever member 40 with the brake 20 while satisfying the lever principle.

[0101] In some possible implementations, see Figure 4-Figure 6 As shown, the input connection cavity 41 may include an input through hole 411, which is located on the top wall of the lever member 40 and extends in a first direction (eg, Figure 4 or Figure 6 The input through hole 411 has an inner wall including an input through structure 412, and the input through structure 412 extends in a second direction (such as Figure 4 or Figure 5 The first direction (in the Y direction) passes through a side wall of the lever member 40. The first direction, the second direction and the axis of the lever member 40 are perpendicular to each other.

[0102] See also Figure 3 As shown, one end of the input steel cable 50 is located in the input through hole 411 through the input through structure 412. When the input steel cable 50 receives the pedal braking force, one end of the input steel cable 50 abuts against the inner wall of the input through hole 411, so that the connection between one end of the input steel cable 50 and the lever member 40 will not fail, and the input steel cable 50 can be self-locked under the premise of realizing the active connection between the input steel cable 50 and the lever member 40.

[0103] The specific structure of the input through structure 412 is not specifically limited in the embodiments of the present application. Figure 4 As shown, the input through structure 412 may be a ring-shaped input port with a gap. The specific shape of the ring-shaped input port is not limited here. Figure 6 As shown, the longitudinal cross-section of the annular input port along the first direction is L-shaped.

[0104] Of course, in addition to being an annular input port with a gap, the input through structure 412 may also be an annular input hole in some embodiments. The specific structure of the annular input hole is not limited here. For example, the annular input hole may be a circular hole.

[0105] In some possible implementations, see Figure 4-Figure 6 As shown, each output connection cavity 42 may include an output through hole 421, which is located on the top wall of the lever member 40 and penetrates the lever member 40 along the first direction, and the axis of the output through hole 421 is parallel to the axis of the input through hole 411 and parallel to the first direction. The inner wall of each output through hole 421 includes an output through structure 422, and the two output through structures 422 penetrate the other two side walls of the lever member 40 along the second direction respectively.

[0106] See also Figure 3 As shown, one end of the output steel cable 60 is located in the output through hole 421 through the output through structure 422. When the output steel cable 60 receives the braking force transmitted by the brake 20, one end of the output steel cable 60 abuts against the inner wall of the output through hole 421, so that the connection between one end of the output steel cable 60 and the lever member 40 will not fail, and the output steel cable 60 can be self-locked under the premise of realizing the active connection between the output steel cable 60 and the lever member 40.

[0107] The specific structure of the output through structure 422 is not specifically limited in the embodiments of the present application. Figure 4 As shown, the output through structure 422 may be an annular output port with a gap. The specific shape of the annular output port is not limited here. Figure 4 As shown, the annular output port is L-shaped.

[0108] Of course, in addition to being an annular output port with a gap, the output through-structure 422 may also be an annular output hole in some embodiments. The specific structure of the annular output hole is not limited here. For example, the annular output hole may be a circular hole.

[0109] In some possible implementations, such as Figure 4As shown, the lever member 40 may include a long bar body 43, an input through hole 411 and two output through holes 421 are located on the top surface of the bar body 43 and penetrate the bar body 43 along a first direction, an input through structure 412 penetrates one side surface of the bar body 43 along a second direction, and two output through structures 422 penetrate the other two side surfaces of the bar body 43 along the second direction respectively. Since the lever member 40 is an integrated structure, it helps to improve the service life of the lever member 40.

[0110] In some possible implementations, one end of the input steel cable 50 is used to flexibly connect to the input connection chamber 41, and the other end of the input steel cable 50 is used to connect to the pedal mechanism 220. One end of each output steel cable 60 is used to flexibly connect to an output connection chamber 42, and the other end of each output steel cable 60 is used to connect to a brake 20. With such an arrangement, the lever member 40 can be tilted after receiving the pedal braking force, ensuring that the same braking force is transmitted to the two brakes 20 respectively through the two output steel cables 60.

[0111] In the embodiment of the present application, the specific structure of the input steel cable 50 is not limited. Figure 7 A schematic diagram of the structure of an input steel cable provided in an embodiment of the present application. For example, in some possible implementations, see Figure 7 As shown, the input cable 50 may include an input cable head 51 and an input cable body 52, wherein the input cable head 51 is a rod-shaped structure and is movably disposed inside the input connection cavity 41, one end of the input cable body 52 is fixedly connected to the middle of the input cable head 51, and the other end of the input cable body 52 is used to connect the pedal mechanism 220. In this way, the input cable 50 can be movably connected to the input connection cavity 41.

[0112] See also Figure 3 As shown, the input cable head 51 is movably disposed in the input through hole 411, and the axis of the input cable head 51 is parallel to the axis of the input through hole 411. The input cable body 52 can movably pass through the input through structure 412 to connect the input cable head 51 and the pedal mechanism 220. In this way, the input steel cable 50 and the lever member 40 can be self-locked under the premise of realizing the movably connected input steel cable 50 and the input connecting cavity 41.

[0113] In the embodiment of the present application, the specific structure of the output steel cable 60 is not limited. Figure 8 This is a schematic diagram of the structure of an output steel cable provided in an embodiment of the present application. For example, in some possible implementations, see Figure 8As shown, each output cable 60 may include an output cable head 61 and an output cable body 62, wherein the output cable head 61 is a rod-shaped structure and is movably disposed inside the output connection cavity 42, one end of the output cable body 62 is fixedly connected to the middle of the output cable head 61, and the other end of the output cable body 62 is used to connect a brake 20. In this way, the output cable 60 can be movably connected to the output connection cavity 42.

[0114] See also Figure 3 As shown, the output cable head 61 is movably disposed in the output through hole 421, and the axis of the output cable head 61 is parallel to the axis of the output through hole 421. The output cable body 62 can movably pass through the output through structure 422 to connect the output cable head 61 and the pedal mechanism 220. In this way, the output steel cable 60 and the lever member 40 can be self-locked under the premise of realizing the movably connected output steel cable 60 and the output connecting cavity 42.

[0115] In some possible implementations, see Figure 3 As shown, the balancing device 10 may further include an elastic member 70 disposed inside the housing member 30, and the elastic member 70 is used to restore the displacement of the lever member 40 relative to the housing member 30 due to the pedal braking force. Therefore, after the pedal mechanism 220 does not output the pedal braking force, the elastic member 70 can make the lever member 40 return from the current position to the initial position, which can ensure the normal driving of the vehicle 200. In addition, it can also help the pedal of the pedal mechanism 220 to automatically return to the initial position, thereby helping to increase the safety of the vehicle 200.

[0116] It should be noted that, in some embodiments, the balancing device 10 may also remove the elastic member 70. Correspondingly, the pedal mechanism 220 of the vehicle 200 is provided with an elastic member 70. After the pedal mechanism 220 does not output the pedal braking force, the elastic member 70 can drive the lever member 40 to return from the current position to the initial position through the input steel cable 50, and make the pedal return to the initial position.

[0117] In the embodiment of the present application, the specific structure of the elastic member 70 is not limited here. For example, in some possible implementations, continue to refer to Figure 3 As shown, the elastic member 70 may include a return spring. The return spring is sleeved on the input steel cable 50 and movably connected to the input steel cable 50, and the two ends of the return spring are respectively in contact with the inner wall of the housing member 30 and the lever member 40. The return spring is used to restore the displacement of the lever member 40 relative to the housing member 30 due to the pedal braking force, so that the cost of the elastic member 70 can be reduced under the premise of achieving the return of the lever member 40.

[0118] Since the return spring is a hollow structure and is movably connected to the input steel cable 50, when the input steel cable 50 moves, the return spring may shake in a direction perpendicular to the axial direction of the input steel cable 50 or in a radial direction of the return spring, and the return spring and the input steel cable 50 rub against each other, resulting in force loss. Therefore, in some possible implementations, the housing 30 may further include a limiting portion (not shown in the figure). The limiting portion is a hollow structure and is located inside the housing 30, and the limiting portion is sleeved on the input steel cable 50 and movably connected to the input steel cable 50. One end of the limiting portion is fixedly connected to the housing 30, and the other end of the limiting portion extends in the axial direction of the input steel cable 50. The return spring is sleeved on the outer wall of the limiting portion and abuts against the limiting portion, so that when the input steel cable 50 moves axially, the return spring can be prevented from shaking in its radial direction, so that the return spring will not rub against the input steel cable 50.

[0119] In the above content, the lever member 40 is an integrated structure, however, the lever member 40 may also be a split structure. Fig. 9 A schematic diagram of the partial decomposition structure of a second balancing device provided in an embodiment of the present application. Fig. 9 and Figure 3 The difference is that the lever member 40 is a split structure. Specifically, the lever member 40 may include an inner plate 44 and two outer plates 45. The inner plate 44 and the two outer plates 45 are perpendicular to the first direction, and the inner plate 44 is located between the two outer plates 45 and is fixedly connected to the two outer plates 45 respectively. The input through hole 411 and the two output through holes 421 penetrate the inner plate 44 and the two outer plates 45 along the first direction respectively. The input through structure 412 penetrates the side wall of the inner plate 44 and at least one of the two outer plates 45 along the second direction. Each output through structure 422 penetrates the side wall of the inner plate 44 and at least one of the two outer plates 45 along the second direction. The lever member 40 with such a structure can reduce the processing difficulty of the lever member 40, which helps to improve the production efficiency of the lever member 40.

[0120] It can be understood that the specific sidewall through which the input through structure 412 penetrates along the second direction may depend on the specific structure of the input through structure 412 . Fig.10 A schematic diagram of the structure of an inner plate provided in an embodiment of the present application, Fig.11 Schematic diagram of the structure of an outer plate provided in an embodiment of the present application. For example, in some embodiments, when the input through structure 412 can be a ring-shaped input hole, such as Fig.10 As shown, the inner plate 44 may include an input notch 441. Fig.11As shown, each outer plate 45 includes an input port 451. The two input ports 451 are located on both sides of the input notch 441 along the first direction and together with the input notch 441 form an input through hole 411. The two outer plates 45 and the input notch 441 together form an annular input hole. Of course, in some embodiments, the input through structure 412 can also be an annular input port with a notch, and the input through structure 412 can pass through the inner plate 44 and one of the outer plates 45 (not shown in the figure).

[0121] It can be understood that the specific sidewall through which the output through structure 422 passes along the second direction may depend on the specific structure of the output through structure 422. For example, in some embodiments, when the output through structure 422 may be a ring-shaped output hole, Fig.10 As shown, the inner plate 44 may include an output notch 442. Fig.11 As shown, each outer plate 45 may include an output port 452. The two output ports 452 are located on both sides of the output notch 442 along the first direction and together with the output notch 442 form an output through hole 421. The two outer plates 45 and the output notch 442 together form an annular output hole. Of course, in some embodiments, the output through structure 422 may also be an annular output port with a notch, and the output through structure 422 may pass through the inner plate 44 and one of the outer plates 45 (not shown in the figure).

[0122] In the embodiment of the present application, there is no limitation on the specific structure of the inner plate 44 , which may be determined according to the structure of the input through structure 412 and the output through structure 422 .

[0123] In the embodiment of the present application, there is no limitation on the specific structure of the outer plate 45 , which may be determined according to the structure of the input through structure 412 and the output through structure 422 .

[0124] In the above content, when the electronic mechanical brake device 100 operates in the auxiliary brake mode, since the electronic mechanical brake device 100 includes a balancing device 10, the pedal braking force output by the pedal mechanism 220 is transmitted to the two brakes 20 through the balancing device 10, so that the two wheels 210 can be braked with the same braking force. However, when the weight of the vehicle 200 is heavy, braking only two wheels 210 may not meet the braking demand. For example, when the vehicle 200 is a heavy vehicle 200 such as a heavy truck or an off-road vehicle, it may be necessary to brake four wheels 210 at the same time to meet the braking demand. It is understandable that the number of wheels 210 included in the vehicle 200 is at least four. Alternatively, when the balancing device 10 has a problem and cannot transmit the braking force to the brake 20, the brake 20 cannot brake the wheel 210, which will reduce the safety of the vehicle 200.

[0125] Fig.12 A schematic diagram of the structure of a second electromechanical braking device provided in an embodiment of the present application. Fig.12 and Figure 2 The difference is that Fig.12 The electronic mechanical brake device 100 shown may include two balancing devices 10 and four brakes 20. Two of the brakes 20 are respectively used to brake the two front wheels of the vehicle 200, and the other two brakes 20 are respectively used to brake the two rear wheels of the vehicle 200. The operation mode of the electronic mechanical brake device 100 may include a main brake mode and a secondary brake mode.

[0126] When the electronic mechanical brake device 100 operates in the main brake mode, two brakes 20 are used to receive the braking force output by the brake motor or the other two brakes 20 are used to receive the braking force output by the brake motor. When the vehicle 200 is traveling, at least two brakes 20 can receive the braking force output by the brake motor, that is, at least two wheels 210 can be braked at the same time, which is not limited here.

[0127] When the electronic mechanical brake device 100 operates in the auxiliary brake mode, one balancing device 10 is used to receive the pedal braking force output by the pedal mechanism 220 of the vehicle 200 and transmit the same pedal braking force to the two brakes 20 respectively, or the other balancing device 10 is used to receive the pedal braking force output by the pedal mechanism 220 of the vehicle 200 and transmit the same pedal braking force to the other two brakes 20 respectively. In this way, on the one hand, the two balancing devices 10 are backup for each other, and when one of the balancing devices 10 is damaged, the other balancing device 10 can still ensure that the electronic mechanical brake device 100 can brake the vehicle 200. On the other hand, when the weight of the vehicle 200 is heavy, the four wheels 210 can be braked at the same time to improve the reliability of braking.

[0128] In the description of the embodiments of the present application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, or it can be an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific circumstances.

[0129] In the embodiments of the present application, the devices or elements referred to or implied must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the embodiments of the present application. In the description of the embodiments of the present application, the meaning of "multiple" is two or more, unless otherwise precisely and specifically specified.

[0130] The terms "first", "second", "third", "fourth", etc. (if any) in the specification and claims of the embodiments of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0131] The term "plurality" in this article refers to two or more than two. The term "and / or" in this article is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the previous and next associated objects are in an "or" relationship; in a formula, the character " / " indicates that the previous and next associated objects are in a "division" relationship.

[0132] It should be understood that the various numerical numbers involved in the embodiments of the present application are only used for the convenience of description and are not used to limit the scope of the embodiments of the present application.

Claims

1. An electromechanical brake device, the electromechanical brake device is used for braking a vehicle, characterized in that: The electronic mechanical brake device comprises a balancing device and two brakes. The balancing device comprises a lever, an input steel cable and two output steel cables. The input steel cable is used to connect the pedal mechanism of the vehicle and the lever. One end of each output steel cable is used to connect the lever. The other end of each output steel cable is used to connect one of the brakes. The two brakes are used to brake two wheels of the vehicle respectively. The operation modes of the electronic mechanical brake device include a main braking mode and a secondary braking mode, wherein: When the electronic mechanical brake device operates in the main brake mode, the two brakes are respectively used to receive the motor force output by the brake motor; When the electronic mechanical brake device operates in the auxiliary brake mode, the balancing device is used to receive the pedal braking force output by the pedal mechanism of the vehicle and transmit the same braking force to the two brakes respectively.

2. The electromechanical brake device according to claim 1, characterized in that: The balancing device comprises a housing member, the lever member is arranged inside the housing member, wherein: The housing member comprises an input opening and two output openings, wherein the input opening and the two output openings are respectively used to communicate with the interior and the exterior of the housing member; The lever member is used to connect the pedal mechanism and the two brakes, and the pedal braking force of the pedal mechanism transmits the same braking force to the two brakes respectively through the lever member.

3. The electromechanical brake device according to claim 2, characterized in that: The input opening is arranged on one side wall of the housing member, the two output openings are arranged on the other side wall of the housing member, one side wall of the housing member is arranged opposite to the other side wall of the housing member, and the lever member is arranged between one side wall of the housing member and the other side wall of the housing member; or, The input opening is arranged on a side wall of the shell member, the two output openings are respectively arranged on the other two side walls of the shell member, the other two side walls of the shell member are arranged opposite to each other and are respectively connected to one side wall of the shell member, and the lever member is arranged between the other two side walls of the shell member.

4. The electromechanical brake device according to claim 3, characterized in that: The input cable connects the pedal mechanism and the lever member through the input opening; One of the output cables is connected to one of the brakes and the lever member through one of the output openings; Another output cable is connected to another brake and the lever member through another output opening.

5. The electromechanical brake device according to claim 4, characterized in that: The housing member comprises an input seal and two output seals, wherein: The input seal is a hollow structure, the input seal is sleeved on the input steel cable and movably connected to the input steel cable, one end of the input seal is fixedly connected to the housing and communicated with the input opening, and the other end of the input seal extends along the axial direction of the input steel cable; The output seal has a hollow structure, and the two output seals correspond to the two output steel cables one by one. Each of the output seals is sleeved on the corresponding output steel cable and movably connected to the output steel cable. One end of each of the output seals is fixedly connected to the shell and communicated with one of the output openings, and the other end of each of the output seals extends along the axial direction of the output steel cable.

6. The electromechanical brake device according to claim 1, characterized in that: The balancing device comprises a housing member, the housing member is used to fix the balancing device, the lever member is arranged inside the housing member, the lever member comprises an input connection cavity and two output connection cavities, wherein: The input connecting chamber is used to connect the pedal mechanism, and the two output connecting chambers are respectively used to connect the two brakes. The two output connecting chambers are respectively arranged on both sides of the input connecting chamber along the axial direction of the lever member, and the distance between the input connecting chamber and one of the output connecting chambers is equal to the distance between the input connecting chamber and the other of the output connecting chambers.

7. The electromechanical brake device according to claim 6, characterized in that: The input connection cavity comprises an input through hole, the input through hole is located on the top wall of the lever member and penetrates the lever member along a first direction, the inner wall of the input through hole comprises an input through structure, the input through structure penetrates a side wall of the lever member along a second direction, wherein the first direction, the second direction and the axis of the lever member are perpendicular to each other; Each of the output connecting cavities includes an output through hole, which is located on the top wall of the lever member and penetrates the lever member along a first direction. The axis of the output through hole is parallel to the axis of the input through hole and parallel to the first direction. The inner wall of each of the output through holes includes an output through structure, and the two output through structures respectively penetrate the other two side walls of the lever member along a second direction.

8. The electromechanical brake device according to claim 7, characterized in that: The input through structure includes one of the following structures: an annular input port or an annular input hole with a gap; The output through structure includes one of the following structures: an annular output port or an annular output hole with a gap.

9. The electromechanical brake device according to claim 7, characterized in that: The lever member comprises a long bar body, the input through hole and the two output through holes are located on the top surface of the bar body and penetrate the bar body along the first direction, the input through structure penetrates one side surface of the bar body along the second direction, and the two output through structures penetrate the other two side surfaces of the bar body along the second direction respectively; or, The lever member includes an inner plate and two outer plates, the inner plate and the two outer plates are perpendicular to a first direction, the inner plate is located between the two outer plates and are fixedly connected to the two outer plates respectively, the input through hole and the two output through holes respectively penetrate the inner plate and the two outer plates along the first direction, the input through structure penetrates the side wall of the inner plate and at least one of the two outer plates along the second direction, and each of the output through structures penetrates the side wall of the inner plate and at least one of the two outer plates along the second direction.

10. The electromechanical brake device according to claim 6, characterized in that: One end of the input steel cable is used for movably connecting to the input connection chamber, and the other end of the input steel cable is used for connecting to the pedal mechanism; One end of each of the output steel cables is used for movably connecting to one of the output connecting cavities, and the other end of each of the output steel cables is used for connecting to one of the brakes.

11. The electromechanical brake device according to claim 10, characterized in that: The input cable comprises an input cable head and an input cable body. The input cable head is a rod-shaped structure and is movably arranged inside the input connection cavity. One end of the input cable body is fixedly connected to the middle of the input cable head, and the other end of the input cable body is used to connect the pedal mechanism. Each of the output steel cables comprises an output cable head and an output cable body. The output cable head is a rod-shaped structure and is movably arranged inside the output connecting cavity. One end of the output cable body is fixedly connected to the middle of the output cable head, and the other end of the output cable body is used to connect one of the brakes.

12. The electromechanical brake device according to claim 1, characterized in that: The balancing device comprises a housing member and an elastic member, wherein: The housing member is used to fix the balancing device and to accommodate the lever member and the elastic member; The pedal braking force of the pedal mechanism transmits the same braking force to the two brakes respectively through the lever member and the input steel cable; The elastic member is used to restore the displacement of the lever member relative to the housing member due to the pedal braking force.

13. The electromechanical brake device according to claim 12, characterized in that: The elastic member comprises a return spring, which is sleeved on the input steel cable and movably connected to the input steel cable, and two ends of the return spring are respectively in contact with the inner wall of the housing member and the lever member.

14. The electromechanical brake device according to claim 13, characterized in that: The shell member includes a limiting portion, which is a hollow structure and is located inside the shell member. The limiting portion is sleeved on the input steel cable and movably connected to the input steel cable. One end of the limiting portion is fixedly connected to the shell member, and the other end of the limiting portion extends along the axial direction of the input steel cable. The return spring is sleeved on the outer wall of the limiting portion and abuts against the limiting portion.

15. An electromechanical brake device, used for braking a vehicle, characterized in that: The electronic mechanical brake device comprises two balancing devices and four brakes, wherein two of the brakes are respectively used to brake the two front wheels of the vehicle, and the other two brakes are respectively used to brake the two rear wheels of the vehicle, each of the balancing devices comprises a lever member, an input steel cable and two output steel cables, the input steel cable in each balancing device is used to connect the pedal mechanism of the vehicle and the lever member, the two output steel cables of one balancing device are used to connect the two brakes for braking the two front wheels of the vehicle and the lever member in the one balancing device, the two output steel cables of another balancing device are used to connect the other two brakes for braking the two rear wheels of the vehicle and the lever member of the other balancing device, the operation modes of the electronic mechanical brake device include a main braking mode and a secondary braking mode, wherein: When the electronic mechanical brake device operates in the main brake mode, the two brakes are used to receive the braking force output by the brake motor or the other two brakes are used to receive the braking force output by the brake motor; When the electronic mechanical brake device operates in the auxiliary brake mode, one of the balancing devices is used to receive the pedal braking force output by the pedal mechanism of the vehicle and transmit the same pedal braking force to the two brakes respectively, or the other balancing device is used to receive the pedal braking force output by the pedal mechanism of the vehicle and transmit the same pedal braking force to the other two brakes respectively.

16. A vehicle, characterized in that: comprising a wheel, a pedal mechanism and an electromechanical brake device as claimed in any one of claims 1 to 15; The balancing device of the electromechanical brake device is connected to the pedal mechanism and is used for braking the wheel.

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