Brake device and vehicle

Abstract

The invention discloses a braking device and a vehicle, and relates to the technical field of vehicles. The braking device comprises an electromagnetic driver, an output piece and a speed reducer, the electromagnetic driver comprises a rotor, the output piece is used for braking the target piece, the speed reducer comprises a duplex planet wheel, and the rotor and the output piece are both in transmission connection with the duplex planet wheel. By arranging the duplex planet gear and enabling the rotor and the output piece to be in transmission connection with the duplex planet gear, compared with a mode that a two-stage or multi-stage planet gear system is adopted for transmission connection for speed reduction and torque increase, the large transmission ratio of the braking device can be met, meanwhile, the structure of the braking device is simplified, and the size of the braking device is reduced.

Description

Technical Field

[0001] The present application relates to the field of vehicle technology, and in particular to a braking device and a vehicle. Background Art

[0002] During vehicle driving, in order to improve driving safety, a braking device is usually provided, which can brake the vehicle wheels according to actual needs.

[0003] In related technologies, the motor relies on a reducer to reduce speed and increase torque, which in turn indirectly drives the brake pads to brake the wheels. Currently, to achieve a larger transmission ratio and increase torque, the reducer uses a two-stage or multi-stage planetary gear system for transmission connection. However, this approach increases the number of components, such as the planetary gears, planetary carrier, and ring gear, leading to a more complex and larger brake device structure. Summary of the Invention

[0004] The embodiments of the present application provide a braking device and a vehicle to at least partially solve the above-mentioned technical problems.

[0005] In order to achieve the above-mentioned purpose, according to the first aspect of the present application, a braking device is provided, which includes an electromagnetic driver, an output member and a reducer, the electromagnetic driver includes a rotor; the output member is used to brake the target member; the reducer includes a double-linked planetary gear, and the rotor and the output member are both transmission-connected to the double-linked planetary gear.

[0006] In a possible implementation, the reducer further includes a planet carrier, which is drivingly connected to the rotor, and the duplex planetary gears are rotatably disposed on the planet carrier.

[0007] In a possible implementation, the planet carrier has a first accommodation portion, and the duplex planetary gear is disposed in the first accommodation portion.

[0008] In a possible implementation, a side wall of the planet carrier is provided with a window communicating with the first accommodation portion, and the window is used for allowing the duplex planetary gear to be placed in the first accommodation portion.

[0009] In one possible implementation, the braking device also includes a first bracket, and the reducer also includes a first sun gear and a second sun gear, the first sun gear is fixed to the first bracket, the second sun gear is rotatably arranged on the planetary carrier, the second sun gear is transmission-connected to the output member, and the double planetary gear includes a first gear and a second gear, the first gear is engaged with the first sun gear, and the second gear is engaged with the second sun gear.

[0010] In one possible implementation, the braking device also includes a second bracket and a first bracket, the reducer also includes a first sun gear and a second sun gear, the first sun gear is fixed to the first bracket, the second sun gear is rotatably arranged on the second bracket, the second sun gear is transmission-connected to the output member, the double planetary gear includes a first gear and a second gear, the first gear is meshed with the first sun gear, and the second gear is meshed with the second sun gear.

[0011] In a possible implementation, the braking device further includes a housing, and the rotor and the reducer are disposed in the housing;

[0012] The first bracket is connected to the housing or is integrally formed with the housing; and / or,

[0013] The second bracket is connected to the housing or is integrally formed with the housing.

[0014] In a possible implementation, a plurality of the duplex planetary gears are provided, and the plurality of duplex planetary gears are spaced apart around the circumference of the first sun gear.

[0015] In a possible implementation, the product of the number of teeth of the first sun gear and the second gear is smaller than the product of the number of teeth of the second sun gear and the first gear.

[0016] In a possible implementation, the first sun gear and the second sun gear are coaxially arranged.

[0017] In a possible implementation, the rotation axis of the double planetary gear is parallel to the rotation axis of the second sun gear.

[0018] In a possible implementation, the sum of the number of teeth of the first sun gear and the first gear is equal to the sum of the number of teeth of the second sun gear and the second gear.

[0019] In a possible implementation, the second sun gear is rotatably connected to the first sun gear.

[0020] In a possible implementation, one of the second sun gear and the first sun gear is provided with a positioning protrusion, and the other is provided with a matching groove, and the positioning protrusion is embedded in the matching groove.

[0021] In one possible implementation, the second sun gear is provided with the mating groove at one end close to the first sun gear, a first bearing is provided in the mating groove, and the first sun gear is provided with the positioning protrusion at one end close to the second sun gear, and the positioning protrusion is connected to the first bearing.

[0022] In a possible implementation, the rotor center has a second accommodation portion, and at least a portion of the reducer is disposed in the second accommodation portion.

[0023] In a possible implementation, the braking device further includes a transmission rod, the output member is sleeved on the transmission rod and is threadedly transmitted to the transmission rod, and one end of the transmission rod away from the output member is transmission-connected to the duplex planetary gear.

[0024] In a possible implementation, the transmission rod and the reducer are coaxially arranged.

[0025] In a possible implementation, the braking device further includes a caliper, and the output member is movably disposed on the caliper.

[0026] In a possible implementation, the braking device further includes a housing, the rotor and the reducer are disposed in the housing, and the caliper is connected to the housing.

[0027] In a possible implementation, the caliper and the housing are integrally formed.

[0028] According to a second aspect of the present application, a vehicle is provided, the vehicle comprising the braking device provided by any embodiment of the first aspect.

[0029] In the braking device of the embodiment of the present application, by providing a double planetary gear, and making the rotor and the output member both transmission-connected to the double planetary gear, compared with the method of using a two-stage or multi-stage planetary gear system for transmission connection, deceleration and torque increase, it is possible to simplify the structure of the braking device and reduce the size of the braking device while meeting the large transmission ratio of the braking device.

[0030] Other features and advantages of the present application will be described in detail in the subsequent detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] To more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present application. Those skilled in the art can also derive other drawings based on these drawings without inventive effort.

[0032] In order to more completely understand the present application and its beneficial effects, the following description will be given in conjunction with the accompanying drawings, wherein the same drawing numbers represent the same parts in the following description.

[0033] Figure 1 A schematic structural diagram of a braking device provided in some embodiments of the present application;

[0034] Figure 2 A cross-sectional view of a braking device provided for some embodiments of the present application;

[0035] Figure 3 for Figure 2 Enlarged view of part A in the middle;

[0036] Figure 4 for Figure 3 Enlarged view of middle part B;

[0037] Figure 5 A schematic side view of the internal assembly of a braking device provided in some embodiments of the present application;

[0038] Figure 6 An exploded view of a partial structure of a braking device provided in some embodiments of the present application;

[0039] Figure 7 A schematic diagram of the structure of a double planetary gear provided in some embodiments of the present application;

[0040] Figure 8 A schematic structural diagram of a planet carrier provided in some embodiments of the present application;

[0041] Figure 9 A partial cross-sectional view of a braking device provided for some embodiments of the present application;

[0042] Figure 10 Schematic diagram of the assembly of the end cap and the Hall sensor provided in some embodiments of the present application;

[0043] Figure 11 A structural block diagram of a vehicle provided for some embodiments of the present application.

[0044] Description of reference numerals:

[0045] 1000-vehicles;

[0046] 100-brake device; 10-housing; 11-shell; 12-end cover;

[0047] 20 - electromagnetic driver; 21 - rotor; 211 - second accommodating portion; 22 - stator; 23 - encoder; 24 - Hall sensor;

[0048] 30 - reducer; 31 - planet carrier; 311 - first accommodating portion; 312 - window; 32 - double planetary gear; 323 - axle; 321 - first gear; 322 - second gear; 33 - first sun gear; 331 - positioning protrusion; 34 - second sun gear; 341 - mating groove; 35 - baffle;

[0049] 40- transmission rod;

[0050] 60-caliper;

[0051] 70-brake pads;

[0052] 81-first bearing; 82-second bearing; 83-third bearing;

[0053] 90-output piece. DETAILED DESCRIPTION

[0054] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the embodiments described are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application.

[0055] Reference Figures 1 to 5 , Figure 1 A schematic structural diagram of a braking device 100 provided in some embodiments of the present application; Figure 2 A cross-sectional view of a braking device 100 provided for some embodiments of the present application; Figure 3 for Figure 2 Enlarged view of part A in the middle; Figure 4 for Figure 3 Enlarged view of middle part B; Figure 5 A schematic side view of the internal assembly of a braking device 100 provided in some embodiments of the present application.

[0056] According to a first aspect of the present application, a braking device 100 is provided, which includes an electromagnetic driver 20, an output member 90 and a reducer 30, wherein the electromagnetic driver 20 includes a rotor 21; the output member 90 is used to brake the target member; the reducer 30 includes a duplex planetary gear 32, and the rotor 21 and the output member 90 are both transmission-connected to the duplex planetary gear 32.

[0057] It is understood that the electromagnetic driver 20 converts electrical energy into mechanical energy using electromagnetic principles, thereby driving the reducer 30. The rotor 21 is a rotatable component that is configured to rotate in a magnetic field, thereby converting electrical energy into mechanical energy.

[0058] It can be understood that the speed reducer 30 converts the high-speed, low-torque output of the rotor 21 into a low-speed, high-torque output, thereby providing sufficient power to push the output member 90 to brake the target member.

[0059] Specifically, the double planetary gear 32 includes a first gear 321 and a second gear 322 fixed coaxially. The first gear 321 is directly or indirectly connected to the rotor 21, and the second gear 322 is directly or indirectly connected to the output member 90, thereby increasing the transmission ratio.

[0060] In one example, the target part is a wheel, and the rotor 21 indirectly drives the output part 90 to move along the axial direction of the wheel through the reducer 30. The output part 90 can brake the wheel directly by friction, or it can brake the wheel indirectly, for example, by setting a brake pad 70 (such as Figure 10 As shown in FIG, the output member 90 drives the brake pad 70 to move along the axial direction of the wheel, thereby braking the wheel.

[0061] Due to the advantages of a wide transmission ratio range and a compact structure, in the embodiment of the present application, by providing a double planetary gear 32 and making the rotor 21 and the output member 90 transmission-connected to the double planetary gear 32, compared with the method of using a two-stage or multi-stage planetary gear system for transmission connection, deceleration and torque increase, it is possible to simplify the structure of the brake device 100 and reduce the volume of the brake device 100 while meeting the large transmission ratio of the brake device 100.

[0062] Reference Figure 3 and Figure 5 In some embodiments, the electromagnetic driver 20 further includes a stator 22 , which is a stationary part. The rotor 21 is coaxially arranged with the stator 22 , and the rotor 21 is configured to rotate at the center of the stator 22 .

[0063] The stator 22 includes a stator core and a stator winding, and is used to generate a magnetic field. The rotor 21 includes a rotor core and a rotor winding. The rotor 21 rotates in the magnetic field generated by the stator 22 under the action of electromagnetic force, thereby converting electrical energy into mechanical energy.

[0064] Reference Figure 3 In some embodiments, the braking device 100 further includes a housing 10 , the reducer 30 and the stator 22 are disposed in the housing 10 , and at least a portion of the output member 90 is disposed in the housing 10 .

[0065] Reference Figure 3 In some embodiments, the housing 10 is provided with a limiting groove, which is configured to limit the movement of the rotor 21 along its axial direction.

[0066] Reference Figure 2 In some embodiments, the housing 10 includes a shell 11 and an end cover 12. Along the axial direction of the braking device 100, one end of the shell 11 has an opening, and the end cover 12 covers the opening. The end of the shell 11 close to the end cover 12 has a step, and the step is located on the inner surface of the shell 11. The step and the end cover 12 define a limiting groove.

[0067] Figure 6 An exploded view of a partial structure of a braking device 100 provided in some embodiments of the present application; Figure 8 A schematic structural diagram of the planet carrier 31 provided in some embodiments of the present application.

[0068] Reference Figure 3 、 Figure 6 and Figure 8 In some embodiments, the reducer 30 further includes a planetary carrier 31 , which is transmission-connected to the rotor 21 , and the planetary carrier 31 rotates synchronously with the rotor 21 , and the double-coupled planetary gears 32 are rotatably disposed on the planetary carrier 31 .

[0069] In one example, planet carrier 31 is keyed to rotor 21, securing them circumferentially. The keyed connection allows torque from rotor 21 to be transmitted to planet carrier 31, resulting in synchronous rotation of the two components to achieve power transmission. This keyed connection facilitates installation and removal of planet carrier 31 and rotor 21, improving the maintainability of brake device 100.

[0070] In one example, the planet carrier 31 is coaxially disposed with the rotor 21 .

[0071] In the embodiment of the present application, by setting up the planetary carrier 31, the operator can first install the double planetary gears 32 to the planetary carrier 31, and then install the planetary carrier 31 equipped with the double planetary gears 32 to the rotor 21, thereby effectively reducing the difficulty of assembling the double planetary gears 32.

[0072] It should be noted that, in some other embodiments, the planet carrier 31 may not be provided. For example, the double planetary gears 32 may be rotatably provided on the inner side of the rotor 21 .

[0073] In some embodiments, the planet carrier 31 is disposed on the housing 10 via the second bearing 82 and is keyed to the rotor 21. This configuration allows the planet carrier 31 to directly support the rotor 21, eliminating the need for a separate bracket for the rotor 21. This helps reduce the number of components and the size of the brake device 100.

[0074] Reference Figure 3 and Figure 8 In some embodiments, the planet carrier 31 has a first receiving portion 311, and the duplex planetary gears 32 are disposed in the first receiving portion 311. This configuration provides the planet carrier 31 with a certain length in the axial direction, which not only facilitates the arrangement of the duplex planetary gears 32 but also better withstands bending and torsional stresses.

[0075] In an embodiment of the present application, a first accommodating portion 311 is provided in the planetary carrier 31 so that the duplex planetary gear 32 can be accommodated inside the planetary carrier 31. The planetary carrier 31 not only provides a mounting base for the duplex planetary gear 32, but also serves as the outer shell of the reducer 30, so that the reducer 30 does not need an additional outer shell, thereby reducing the radial size of the reducer 30.

[0076] For example, the planet carrier 31 is cylindrical and hollow inside. With this arrangement, the planet carrier 31 has a reasonable rotational inertia, which helps to improve the stability of the planet carrier during rotation.

[0077] Reference Figure 8 In some embodiments, a side wall of the planet carrier 31 is provided with a window 312 connected to the first accommodating portion 311 , and the window 312 is used for the duplex planetary gear 32 to be placed in the first accommodating portion 311 , thereby reducing the difficulty of assembling the duplex planetary gear 32 .

[0078] Exemplarily, a rectangular window is provided on the side wall of the planet carrier 31 .

[0079] Figure 7 The schematic diagram of the structure of the double planetary gear 32 provided in some embodiments of the present application is shown in FIG. Figure 6 and Figure 7 The double planetary gear 32 includes a first gear and a second gear. The first gear and the second gear are fixed to the same axle 323 . The axle 323 is rotatably disposed on the planetary carrier 31 .

[0080] In some embodiments, the reducer 30 further includes a first sun gear 33 and a second sun gear 34. The first gear 321 meshes with the first sun gear 33, and the second gear 322 meshes with the second sun gear 34. The first sun gear 33 is fixed and stationary, the first gear 321 can rotate and revolve around the first sun gear 33, and the second sun gear 34 is configured to rotate driven by the second gear 322.

[0081] The first sun gear 33 can be fixedly connected to the housing 10 or mounted on the housing 10 via a bracket. In some embodiments, the braking device 100 further includes a first bracket, the first sun gear 33 is fixed to the first bracket, the second sun gear 34 is rotatably disposed on the planet carrier 31, the second sun gear 34 is drivingly connected to the output member 90, and the double planetary gear 32 includes a first gear 321 and a second gear 322.

[0082] The second sun gear 34 is rotatably disposed on the housing 10, or rotatably disposed on the planet carrier 31, or mounted on the housing 10 via a bracket. In some embodiments, the braking device 100 further includes a second bracket and a first bracket, and the reducer 30 further includes a first sun gear 33 and a second sun gear 34. The first sun gear 33 is fixed to the first bracket, and the second sun gear 34 is rotatably disposed on the second bracket. The second sun gear 34 is transmission-connected to the output member 90. The double planetary gear 32 includes a first gear 321 and a second gear 322. The first gear 321 is meshed with the first sun gear 33, and the second gear 322 is meshed with the second sun gear 34.

[0083] Exemplarily, the mounting shaft of the second sun gear 34 is disposed on the planet carrier 31 via the third bearing 83. Specifically, the second sun gear 34 is located in the first accommodation portion 311, and the outer ring of the third bearing 83 is connected to the planet carrier 31, and the inner ring is connected to the second sun gear 34.

[0084] Exemplarily, the mounting shaft of the first sun gear 33 is fixedly connected to the end cover 12 .

[0085] The first sun gear 33 is fixed and stationary, providing stable support for the duplex planetary gears 32 and enhancing their operational stability. During transmission, the first sun gear 33, the second sun gear 34, and the duplex planetary gears 32 work together. Simply changing the number of teeth on at least one of these three gears allows for flexible adjustment of the transmission ratio. Power is then output through the second sun gear 34, achieving diverse transmission effects. This facilitates flexible adjustment of output speed and torque to suit varying operating conditions.

[0086] In some embodiments, the first bracket is connected to the housing 10 or is integrally formed with the housing 10 to achieve installation of the first sun gear 33 .

[0087] In some embodiments, the second bracket is connected to the housing 10 or is integrally formed with the housing 10 to achieve the installation of the second sun gear 34 .

[0088] Reference Figure 6 In some embodiments, a plurality of the double-coupled planetary gears 32 are provided, and the plurality of double-coupled planetary gears 32 are arranged at intervals around the circumference of the first sun gear 33 .

[0089] Providing multiple double planetary gears 32 can evenly distribute the load to each planetary gear, so that the forces on the first sun gear 33 and the second sun gear 34 tend to be balanced, thereby alleviating the problem of deformation of the mounting shaft of the first sun gear 33 and the mounting shaft of the second sun gear 34 under force, and improving the running stability of the reducer 30.

[0090] Exemplarily, three double-coupled planetary gears 32 are provided, and the three double-coupled planetary gears 32 are spaced apart around the circumference of the first sun gear 33 .

[0091] Reference Figure 3 In some embodiments, magnets are embedded in the core of the rotor 21 , and baffles 35 are provided at both axial ends of the core of the rotor 21 to prevent the magnets from slipping out of the core slots of the rotor 21 .

[0092] In some embodiments, the baffle 35 is made of aluminum alloy.

[0093] In some embodiments, the baffle 35 is fixedly connected to the planet carrier 31. For example, the baffle 35 is keyed to the planet carrier 31.

[0094] In some embodiments, the product of the number of teeth of the first sun gear 33 and the second gear 322 is smaller than the product of the number of teeth of the second sun gear 34 and the first gear 321. This arrangement can achieve a deceleration and torque increase effect.

[0095] In some embodiments, the first sun gear 33 is coaxially arranged with the second sun gear 34. This arrangement can reduce the risk of the reducer 30 getting stuck and help improve the running stability of the reducer 30.

[0096] In some embodiments, the rotation axis of the dual planetary gear 32 is parallel to the rotation axis of the second sun gear 34. This arrangement can reduce the risk of the reducer 30 jamming and help improve the operating stability of the reducer 30.

[0097] In some embodiments, the first sun gear 33, the second sun gear 34, and the duplex planetary gear 32 have the same module. This configuration allows the same set of tools to be used when machining the teeth of the three, thereby effectively reducing the number of tools used.

[0098] When the modules of the first sun gear 33, the second sun gear 34 and the duplex planetary gear 32 are the same, further, the sum of the number of teeth of the first sun gear 33 and the first gear 321 is equal to the sum of the number of teeth of the second sun gear 34 and the second gear 322, the rotation axis of the duplex planetary gear 32 can be parallel to the rotation axis of the second sun gear 34, thereby improving the movement smoothness of the reducer 30.

[0099] In some embodiments, the second sun gear 34 is rotatably connected to the first sun gear 33 .

[0100] Since the second sun gear 34 is configured to be rotatable, there is a risk of tilting. In the embodiment of the present application, by rotatably connecting the second sun gear 34 to the first sun gear 33, the second sun gear 34 supports and positions the first sun gear 33, which helps to reduce the risk of the second sun gear 34 tilting.

[0101] Reference Figure 4 In some embodiments, one of the second sun gear 34 and the first sun gear 33 is provided with a positioning protrusion 331 , and the other is provided with a matching groove 341 , and the positioning protrusion 331 is embedded in the matching groove 341 .

[0102] In the embodiment of the present application, the positioning protrusion 331 and the matching groove 341 cooperate with each other, so that the first sun gear 33 and the second sun gear 34 can be assembled in a counter-rotating manner, thereby improving the relative position accuracy of the two during installation and operation, so that the reducer 30 can operate stably and reliably.

[0103] Reference Figure 4In some embodiments, a mating groove 341 is provided at one end of the second sun gear 34 near the first sun gear 33. A first bearing 81 is disposed in the mating groove 341. A positioning protrusion 331 is provided at one end of the first sun gear 33 near the second sun gear 34. The positioning protrusion 331 is connected to the first bearing 81. This ensures that the second sun gear 34 remains rotatable while the first sun gear 33 provides positioning support for the second sun gear 34.

[0104] Specifically, the inner ring of the first bearing 81 is connected to the first sun gear 33 , and the outer ring is connected to the positioning protrusion 331 of the second sun gear 34 .

[0105] Since the second sun gear 34 needs to withstand a larger torque, a higher strength requirement is placed on the second sun gear 34 . Therefore, the diameter of the second sun gear 34 may be larger than that of the first sun gear 33 .

[0106] On this basis, in order to keep the rotation axis of the duplex planetary gear 32 parallel to the rotation axis of the first sun gear 33 , the diameter of the second gear 322 may be larger than the diameter of the first gear 321 .

[0107] Reference Figure 3 and Figure 6 In some embodiments, the rotor 21 has a second accommodating portion 211 at its center, and at least a portion of the reducer 30 is disposed within the second accommodating portion 211. This arrangement allows the reducer 30 to be accommodated within the space within the rotor 21, so that the reducer 30 and the rotor 21 share a portion of the space in the axial direction, thereby helping to reduce the axial dimension of the braking device 100.

[0108] The reducer 30 driven by the double planetary gears 32 is suitable for use in an environment with limited space, and is particularly suitable for use in the second receiving portion 211 of the rotor 21 with limited radial space.

[0109] Reference Figure 9 , Figure 9 This is a partial cross-sectional view of a braking device 100 provided in some embodiments of the present application. In some embodiments, the braking device 100 further includes a transmission rod 40. The output member 90 is sleeved on the transmission rod 40 and threadedly connected to the transmission rod 40. The end of the transmission rod 40 away from the output member 90 is drivingly connected to the double-linked planetary gear 32. This arrangement can convert the rotational motion of the output member 90 into linear motion.

[0110] Specifically, one end of the transmission rod 40 away from the output member 90 is fixedly connected to the mounting shaft of the second sun gear 34 .

[0111] In one example, the transmission rod 40 is a lead screw.

[0112] In some embodiments, the transmission rod 40 is coaxially arranged with the reducer 30. This arrangement can reduce the extra radial space occupied by the transmission rod 40, which helps to reduce the radial size of the braking device 100.

[0113] In other embodiments, the transmission rod 40 and the reducer 30 are arranged side by side, and the brake device 100 further includes a transmission gear. The transmission rod 40 and the reducer 30 are both meshed with the transmission gear, and the rotation axis of the transmission rod 40 is parallel to the rotation axis of the reducer 30. This arrangement can reduce the additional space occupied by the transmission rod 40 in the axial direction, thereby helping to reduce the axial size of the brake device 100.

[0114] Reference Figure 9 In some embodiments, the brake device 100 further includes a caliper 60, and the output member 90 is movably disposed on the caliper 60. The caliper 60 provides a mounting base and a guide function for the output member 90.

[0115] Exemplarily, the output member 90 is a piston capable of linear motion.

[0116] Reference Figure 3 In some embodiments, the braking device 100 further includes an encoder 23 , and a housing of the encoder 23 is connected to the housing 10 .

[0117] Specifically, the encoder 23 is connected to the housing 10 by bolts.

[0118] Reference Figure 10 , Figure 10 An assembly diagram of the end cover 12 and the Hall sensor 24 is provided for some embodiments of the present application. In some embodiments, a Hall sensor 24 is provided on the inner side of the motor end cover 12. The Hall sensor 24 is electrically connected to the encoder 23. The Hall sensor 24 is used to monitor the position information of the rotor 21 iron core and the planetary carrier 31 and transmit it to the encoder 23 for processing.

[0119] In some embodiments, a small hole is preset on the motor end cover 12, and the control line connecting the Hall sensor 24 and the encoder 23 can pass through the small hole.

[0120] The working principle of the braking device 100 of the embodiment of the present application is as follows: the rotor 21 of the braking device 100 drives the planetary carrier 31 to rotate through the keyway, and the planetary carrier 31 drives the double planetary gear 32 installed in the planetary carrier 31 to rotate through the wheel shaft 323, and the double planetary gear 32 obtains its own rotation by engaging with the first sun gear 33, and then transmits power to the transmission rod 40 by engaging with the second sun gear 34, and then the transmission rod converts the rotation into linear motion of the output member 90, thereby achieving the purpose of pressing the brake pad 70 at the front end of the output member 90 and achieving the purpose of braking the wheel.

[0121] In some embodiments, the braking device 100 further includes a housing 10 , the rotor 21 and the reducer 30 are disposed in the housing 10 , and the caliper 60 is connected to the housing 10 , thereby improving the structural stability of the braking device 100 .

[0122] In some embodiments, the caliper 60 and the housing 10 are integrally formed, which helps to improve the integration level of the brake device 100, thereby reducing the number of processing steps and lowering costs.

[0123] Reference Figure 11 , Figure 11 This is a block diagram of a vehicle 1000 provided in some embodiments of the present application. According to a second aspect of the present application, a vehicle 1000 is provided, and the vehicle 1000 includes the braking device 100 provided in any embodiment of the first aspect. Since the vehicle 1000 includes the braking device 100, the vehicle 1000 has all the beneficial effects of the braking device 100, which will not be further described here.

[0124] The vehicle 1000 may be a fuel vehicle, a plug-in hybrid vehicle, a new energy vehicle, etc., and this disclosure does not make any specific limitation thereto.

[0125] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more features. In the description of this application, "plurality" means two or more, unless otherwise specifically defined.

[0126] In the above embodiments, the description of each embodiment has its own focus. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0127] The embodiments, implementation methods and related technical features of the present application can be combined and replaced with each other without conflict.

[0128] The above are merely preferred embodiments of the present application and do not constitute any form of limitation to the present application. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present application without departing from the content of the technical solution of the present application are still within the scope of the technical solution of the present application.

Claims

1. A braking device, characterized in that: include: an electromagnetic drive including a rotor; Output part, used for braking the target part; The reducer comprises a double-coupled planetary gear, wherein the rotor and the output member are both drivingly connected to the double-coupled planetary gear.

2. The braking device according to claim 1, characterized in that The reducer further includes a planet carrier, which is drivingly connected to the rotor, and the double planetary gear is rotatably arranged on the planet carrier.

3. The braking device according to claim 2, characterized in that The planet carrier has a first accommodating portion, and the duplex planetary gear is arranged in the first accommodating portion.

4. The braking device according to claim 3, characterized in that A window communicating with the first accommodating portion is provided on the side wall of the planet carrier, and the window is used for allowing the duplex planetary gear to be placed in the first accommodating portion.

5. The braking device according to claim 2, characterized in that: The braking device also includes a first bracket, and the reducer also includes a first sun gear and a second sun gear, the first sun gear is fixed to the first bracket, the second sun gear is rotatably arranged on the planetary carrier, the second sun gear is transmission-connected to the output member, and the double planetary gear includes a first gear and a second gear, the first gear is meshed with the first sun gear, and the second gear is meshed with the second sun gear.

6. The braking device according to claim 1, characterized in that The braking device also includes a second bracket and a first bracket, and the reducer also includes a first sun gear and a second sun gear, the first sun gear is fixed to the first bracket, the second sun gear is rotatably arranged on the second bracket, the second sun gear is transmission-connected to the output member, and the double planetary gear includes a first gear and a second gear, the first gear is meshed with the first sun gear, and the second gear is meshed with the second sun gear.

7. The braking device according to claim 6, characterized in that The braking device further includes a housing, wherein the rotor and the speed reducer are disposed in the housing; The first bracket is connected to the housing or is integrally formed with the housing; and / or, The second bracket is connected to the housing or is integrally formed with the housing.

8. The braking device according to claim 5 or 6, characterized in that: A plurality of the double-coupled planetary gears are provided, and the plurality of double-coupled planetary gears are spaced apart around the circumference of the first sun gear.

9. The braking device according to claim 5 or 6, characterized in that: A product of the number of teeth of the first sun gear and the second gear is smaller than a product of the number of teeth of the second sun gear and the first gear.

10. The braking device according to claim 5 or 6, characterized in that: The first sun gear and the second sun gear are coaxially arranged.

11. The braking device according to claim 10, characterized in that: The rotation axis of the double planetary gear is parallel to the rotation axis of the second sun gear.

12. The braking device according to claim 10, characterized in that The sum of the numbers of teeth of the first sun gear and the first gear is equal to the sum of the numbers of teeth of the second sun gear and the second gear.

13. The braking device according to claim 5 or 6, characterized in that: The second sun gear is rotatably connected to the first sun gear.

14. The braking device according to claim 13, characterized in that One of the second sun gear and the first sun gear is provided with a positioning protrusion, and the other is provided with a matching groove, and the positioning protrusion is embedded in the matching groove.

15. The braking device according to claim 14, characterized in that The second sun gear is provided with the matching groove at one end close to the first sun gear, and the first bearing is provided in the matching groove. The first sun gear is provided with the positioning protrusion at one end close to the second sun gear, and the positioning protrusion is connected to the first bearing.

16. The braking device according to any one of claims 1 to 4, characterized in that: The rotor center has a second accommodating portion, and at least a portion of the reducer is disposed in the second accommodating portion.

17. The braking device according to any one of claims 1 to 4, characterized in that: The braking device further comprises a transmission rod, the output member is sleeved on the transmission rod and is threadedly driven with the transmission rod, and one end of the transmission rod away from the output member is transmission-connected to the double planetary gear.

18. The braking device according to claim 17, characterized in that The transmission rod is coaxially arranged with the reducer.

19. The braking device according to any one of claims 1 to 4, characterized in that: The braking device further includes a caliper, and the output member is movably disposed on the caliper.

20. The braking device according to claim 19, characterized in that The braking device further includes a housing, the rotor and the reducer are arranged in the housing, and the caliper is connected to the housing.

21. The braking device according to claim 20, characterized in that The caliper is integrally formed with the housing.

22. A vehicle, characterized in that: A braking device comprising the braking device according to any one of claims 1 to 21.

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