Wheel hub motor and vehicle

Abstract

The application provides a wheel hub motor and a vehicle, and relates to the technical field of motors.The wheel hub motor comprises a motor rotor, a motor stator, a mandrel assembly, a steering knuckle and a brake.The motor rotor comprises a first spoke portion, and the motor stator comprises a second spoke portion.The first spoke portion and the second spoke portion are coaxially sleeved on the mandrel assembly, and the first spoke portion and the second spoke portion are both located at a first end portion of the mandrel assembly.The steering knuckle is located at a second end portion of the mandrel assembly, and the steering knuckle is fixedly connected with the motor stator.The brake is located at the inner side of the first end portion of the steering knuckle towards the mandrel assembly.The wheel hub motor provided by the application does not need to separate the motor stator and the motor rotor when the brake is maintained and replaced, the operation is simple, and the maintenance difficulty and the maintenance cost of the brake in the wheel hub motor are reduced.

Description

Technical Field

[0001] This application relates to the field of motor technology, and in particular to a hub motor and vehicle. Background Technology

[0002] With the increasing prevalence of electric vehicles, various drive solutions have emerged, ranging from centrally mounted motors to wheel-side motors and in-wheel motors. From a vehicle space perspective, in-wheel motors are directly connected to the suspension steering knuckles and housed within the wheel rim. Compared to centrally mounted or wheel-side motors, which require dedicated front or rear axle frames, this eliminates the need for reducers, differentials, drive shafts, and other components, making it undoubtedly the most space-efficient solution under the vehicle. Furthermore, vehicles equipped with in-wheel motors also feature distributed drive functionality. Therefore, in-wheel motor drive systems are undoubtedly a drive solution with immense potential.

[0003] However, when the hub motors provided by the relevant technology need to replace the brake disc or brake pads, the stator and rotor need to be separated, which is time-consuming and labor-intensive, increasing the difficulty and cost of maintenance. Summary of the Invention

[0004] This application provides a hub motor and vehicle that can solve the problem that replacing brake discs or brake pads requires separating the stator and rotor, which increases the difficulty and cost of maintenance.

[0005] The technical solution is as follows:

[0006] On the one hand, a hub motor is provided, the hub motor comprising: a motor rotor, a motor stator, a spindle assembly, a steering knuckle, and a brake;

[0007] The motor rotor includes a first spoke portion, and the motor stator includes a second spoke portion;

[0008] The first spoke portion and the second spoke portion are coaxially sleeved on the spindle assembly, and the first axle portion and the second axle portion are both located at the first end of the spindle assembly;

[0009] The steering knuckle is located at the second end of the spindle assembly and is fixedly connected to the motor stator; the brake is located inside the steering knuckle toward the first end of the spindle assembly.

[0010] In some embodiments, the mandrel assembly is connected to the motor rotor, and the mandrel assembly rotates synchronously with the motor rotor;

[0011] The brake is connected between the steering knuckle and the spindle assembly.

[0012] In some embodiments, the mandrel assembly includes a mandrel member, the end of which is provided with a first anti-rotation structure, and the first spoke portion is provided with a second anti-rotation structure, wherein the first anti-rotation structure and the second anti-rotation structure are connected to prevent rotation.

[0013] In some embodiments, the brake includes a brake disc and a brake caliper; the brake disc is connected to the spindle assembly, and the brake caliper is connected to the steering knuckle.

[0014] In some embodiments, the mandrel has a shoulder structure, and the brake disc is connected to the side of the shoulder structure facing the second end of the mandrel assembly.

[0015] In some embodiments, the hub motor further includes a caliper fixing structure located on the inner side of the steering knuckle, and the brake caliper is connected to the caliper fixing structure.

[0016] In some embodiments, the spindle assembly further includes a thrust bearing and a hub bearing, the steering knuckle being rotatably connected to the spindle via the thrust bearing, and the second wheel spoke being rotatably connected to the spindle via the hub bearing.

[0017] In some embodiments, the inner surface of the steering knuckle is provided with a positioning countersunk hole, and the second end of the spindle assembly is located within the positioning countersunk hole.

[0018] In some embodiments, the steering knuckle includes a connecting structure through which the steering knuckle is connected to the motor stator.

[0019] On the other hand, a vehicle is provided, in some embodiments of which the vehicle includes the hub motor described in this application.

[0020] The beneficial effects of the technical solution provided in this application include at least the following:

[0021] The hub motor of this application has a rotor and a stator coaxially mounted on the first end of the spindle assembly via the first spoke and the second spoke, respectively. The brake is arranged inside the steering knuckle at the second end of the spindle assembly. Thus, when the steering knuckle is removed, the brake can be exposed, allowing for maintenance and replacement without separating the motor stator and rotor. This simplifies the operation and helps reduce the maintenance difficulty and cost of the brake in the hub motor. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the hub motor provided in an embodiment of this application;

[0024] Figure 2 This is a structural cross-sectional view of the hub motor provided in the embodiment of this application;

[0025] Figure 3 This is an exploded view of the hub motor structure provided in the embodiments of this application;

[0026] Figure 4 This is a schematic diagram of the connection between the mandrel and the motor rotor provided in the embodiments of this application.

[0027] The reference numerals in the figure are respectively:

[0028] 1. Motor rotor;

[0029] 11. First spoke section; 111. Second anti-rotation structure; 12. First rim section; 13. First hub section;

[0030] 2. Motor stator;

[0031] 21. Second wheel spokes; 22. Second wheel ring;

[0032] 3. Spindle assembly;

[0033] 301. First end; 302. Second end;

[0034] 31. Mandrel component; 32. First anti-rotation structure; 33. Shoulder structure; 34. Thrust bearing; 35. Hub bearing; 36. Locking nut;

[0035] 4. Steering knuckle; 41. Positioning countersunk hole; 42. Bearing housing; 43. Connecting structure;

[0036] 5. Brakes;

[0037] 51. Brake disc; 52. Brake caliper;

[0038] 6. Caliper fixing structure;

[0039] 7. First sealing ring;

[0040] 8. Second sealing ring. Detailed Implementation

[0041] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.

[0042] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0043] It should be understood that in this application, "electrical connection" can be understood as physical contact and electrical conduction between components; it can also be understood as a form of connection between different components in a circuit structure through physical lines that can transmit electrical signals, such as copper foil or wires on a printed circuit board (PCB). "Communication connection" can refer to the transmission of electrical signals, including wireless communication connections and wired communication connections. Wireless communication connections do not require a physical medium and are not a connection relationship that limits the product structure. "Connection" and "connected" can both refer to a mechanical or physical connection relationship, that is, A and B being connected or connected can mean that there are fastening components (such as screws, bolts, rivets, etc.) between A and B, or that A and B are in contact with each other and are difficult to separate.

[0044] Unless otherwise defined, all technical terms used in the embodiments of this application have the same meaning as commonly understood by one of ordinary skill in the art.

[0045] With the increasing prevalence of electric vehicles, domestic and international automakers are investing heavily in electric vehicle research. In terms of drive systems, various implementations have emerged, ranging from centrally mounted motors to wheel-side motors and in-wheel motors. From the perspective of overall vehicle space, in-wheel motors are directly connected to the suspension steering knuckle and housed within the wheel rim. Compared to centrally mounted or wheel-side motors, which require mounting on dedicated front or rear axle frames, this eliminates the need for reducers, differentials, drive shafts, and other components, making it undoubtedly the most space-efficient solution under the vehicle. Furthermore, vehicles equipped with in-wheel motors possess distributed drive functionality not available in centrally mounted motor vehicles. Therefore, in-wheel motor drive systems are undoubtedly a highly promising drive solution.

[0046] However, in the hub motors provided by related technologies, the main integration of the brake, stator, and rotor is connected by hub bearings. The brake disc and brake caliper are located between the sealed cavity formed by the stator and rotor. When it is necessary to replace the brake disc or brake pads, the stator and rotor need to be separated, which is time-consuming and labor-intensive, and can also easily affect the seal.

[0047] Therefore, this application provides a hub motor in which the brake can be exposed after the steering knuckle is removed, allowing for repair and replacement of the brake without separating the motor stator and rotor. This simplifies the operation and helps reduce the difficulty and cost of repairing the brake in the hub motor.

[0048] To make the objectives, technical solutions, and advantages of this application clearer, the embodiments of this application will be described in further detail below with reference to the accompanying drawings.

[0049] On the one hand, combined with Figure 1-3 As shown, on one hand, a hub motor is provided, which includes: a motor rotor 1, a motor stator 2, a spindle assembly 3, a steering knuckle 4, and a brake 5.

[0050] The motor rotor 1 includes a first spoke portion 11, and the motor stator 2 includes a second spoke portion 21; the first spoke portion 11 and the second spoke portion 21 are coaxially sleeved on the spindle assembly 3, and both the first spoke portion and the second spoke portion are located at the first end 301 of the spindle assembly 3; the steering knuckle 4 is located at the second end 302 of the spindle assembly 3, and the steering knuckle 4 is fixedly connected to the motor stator 2; the brake 5 is located on the inside of the steering knuckle 4 facing the first end 301 of the spindle assembly 3.

[0051] In the hub motor of this application, the motor rotor 1 and the motor stator 2 are coaxially sleeved on the first end 301 of the spindle assembly 3 via the first spoke portion 11 and the second spoke portion 21, respectively. The brake 5 is arranged inside the steering knuckle 4 located at the second end 302 of the spindle assembly 3. Thus, when the steering knuckle 4 is removed, the brake 5 can be exposed, and the brake 5 can be repaired and replaced without separating the motor stator 2 and the motor rotor 1. The operation is simple and helps to reduce the maintenance difficulty and maintenance cost of the brake 5 in the hub motor.

[0052] In this embodiment, the hub motor is either an internal rotor motor or an external rotor motor. When the hub motor is an external rotor motor, the motor rotor 1 is arranged on the outside, and the motor stator 2 is arranged on the inside. Both the motor rotor 1 and the motor stator 2 can be divided into three parts: a rim, spokes, and a hub. The rim is the outermost annular structure of the motor rotor 1 or motor stator 2, the hub is the structure connecting the motor rotor 1 to the spindle assembly 3, and the spokes are disc-shaped structures connecting the rim and the hub.

[0053] Among some possible implementations, refer to Figure 2 The motor rotor 1 also includes a first wheel section 12, and the motor stator 2 also includes a second wheel section 22. The first wheel section 12 and the second wheel section 22 are coaxially sleeved together. A coil winding is arranged on one of the first wheel section 12 and the second wheel section 22, and a permanent magnet is arranged on the other of the first wheel section 12 and the second wheel section 22. The coil winding and the permanent magnet generate electromagnetic interaction, thereby driving the motor rotor 1 to rotate relative to the motor stator 2.

[0054] See also some possible implementations. Figure 2 The annular cavity between the first wheel rim portion 12 and the second wheel rim portion 22 is sealed. A first sealing ring 7 is arranged on one axial section of the annular cavity, and a second sealing ring 8 is arranged on the other axial end of the annular cavity. This ensures that the electromagnetic working space of the coil winding and permanent magnet of the hub motor is sealed and clean, thereby improving the working reliability of the hub motor.

[0055] Optionally, the annular sealing cavity formed by the first wheel ring portion 12, the second wheel ring portion 22, the first sealing ring 7, and the second sealing ring 8 is filled with oil, including but not limited to lubricating oil, coolant, etc.

[0056] refer to Figure 2 As shown, in some possible implementations, the first spoke portion 11 is constructed with raised edges and a recessed center. Thus, after the first spoke portion 11 is connected to the first end portion 301 of the spindle assembly 3, the first end portion 301 of the spindle assembly 3 is arranged in a recessed manner. The first end portion 301 of the spindle assembly 3 is protected by the raised edge portion of the first spoke portion 11, which helps to ensure the working reliability of the hub motor.

[0057] In some other possible implementations, the second spoke 21 is constructed with raised edges and a recessed center, so that after the second spoke 21 is connected to the second end 302 of the spindle assembly 3, the second end 302 of the spindle assembly 3 is arranged in a recessed manner.

[0058] In this embodiment, the brake 5 includes, but is not limited to, a drum brake 5 and a disc brake 5. In the drum brake 5, the rotating element in the friction pair is a brake drum with a cylindrical working surface; in the disc brake 5, the rotating element is a rotating brake disc 51 with its end face as the working surface. The rotating element in the brake 5 is connected to either the motor rotor 1 or the motor stator 2, and the friction element in the brake 5 is connected to the other motor rotor 1 or the motor stator 2. When the motor rotor 1 and the motor stator 2 rotate relative to each other, the friction element presses against the surface of the rotating element, using friction to dissipate the energy between the motor rotor 1 and the motor stator 2, thus achieving a braking effect.

[0059] Combination Figure 2 As shown, in some embodiments, the spindle assembly 3 is connected to the motor rotor 1, and the spindle assembly 3 rotates synchronously with the motor rotor 1; the brake 5 is connected between the steering knuckle 4 and the spindle assembly 3.

[0060] With the above arrangement, the spindle assembly 3 is connected to the motor rotor 1 and rotates synchronously with the motor rotor 1. The brake 5 is connected between the steering knuckle 4 and the spindle assembly 3. The steering knuckle 4 and the spindle assembly 3 are respectively connected to the motor stator 2 and the motor rotor 1. Thus, by consuming or restricting the relative rotation between the steering knuckle 4 and the spindle assembly 3, braking between the motor rotor 1 and the motor stator 2 can be achieved.

[0061] In some possible implementations, the first spoke portion 11 of the motor rotor 1 is connected to the first end portion 301 of the spindle assembly 3, and the second spoke portion 21 of the motor stator 2 is connected to the spindle assembly 3 on the inner side of the first spoke portion 11, that is, the second spoke portion 21 is located on the side of the first spoke portion 11 facing the second end portion 302 of the spindle assembly 3.

[0062] Combination Figure 2 , 4 As shown, in some embodiments, the spindle assembly 3 includes a spindle member 31, the end of the spindle member 31 is provided with a first anti-rotation structure 32, the first spoke portion 11 is provided with a second anti-rotation structure 111, and the first anti-rotation structure 32 and the second anti-rotation structure 111 are connected to prevent rotation.

[0063] With the above arrangement, the spindle 31 can rotate synchronously with the motor rotor 1.

[0064] Optionally, the first anti-rotation structure 32 is a non-circular structure arranged on the outer peripheral surface of the spindle 31, which includes, but is not limited to, triangular, quadrangular, hexagonal, elliptical, chopped circular, etc.; the second anti-rotation structure 111 includes a non-circular hole arranged on the first spoke portion 11, which includes, but is not limited to, triangular hole, quadrangular hole, hexagonal hole, elliptical hole, chopped circular, etc.

[0065] In some other possible implementations, the first anti-rotation structure 32 can be a key structure in mechanical transmission, and the second anti-rotation structure 111 can be a keyway structure opened on the first wheel spoke 11. The key structure and the keyway structure cooperate to achieve circumferential fixation between the spindle 31 and the first wheel spoke 11 to transmit torque.

[0066] Combination Figure 2 , 3 As shown, in some embodiments, the brake 5 includes a brake disc 51 and a brake caliper 52; the brake disc 51 is connected to the spindle assembly 3, and the brake caliper 52 is connected to the steering knuckle 4.

[0067] With the above arrangement, the brake caliper 52 is connected to the steering knuckle 4, the steering knuckle 4 is connected to the motor stator 2, and thus the brake caliper 52 is indirectly connected to the motor stator 2. The brake disc 51 is connected to the spindle assembly 3, and the spindle assembly 3 is connected to the motor rotor 1, thus the spindle assembly 3 is indirectly connected to the motor rotor 1.

[0068] Optionally, the brake caliper 52 includes two friction parts respectively arranged on both sides of the brake disc 51. When the brake 5 performs the braking operation, the two friction parts tighten in a clamping shape to clamp the brake disc 51, thereby achieving the braking effect.

[0069] Combination Figure 2 , 4 As shown, in some embodiments, the spindle 31 is provided with a shoulder structure 33, and the brake disc 51 is connected to the side of the shoulder structure 33 facing the second end 302 of the spindle assembly 3.

[0070] By utilizing the shoulder structure 33 arranged on the surface of the spindle, the brake disc 51 can be stably and reliably coaxially connected to the spindle assembly 31. At the same time, the brake disc 51 is arranged on the side of the shoulder structure 33 facing the second end 302 of the spindle assembly 3, so that the brake disc 51 can be directly installed and removed from the side where the second end 302 of the spindle assembly 3 is located, making the operation simpler.

[0071] Optionally, the brake disc 51 is connected to the shoulder structure 33 by a plurality of screw fasteners. Alternatively, the shoulder structure 33 protrudes outward along the surface of the spindle member 31 to facilitate the assembly of the brake disc 51.

[0072] In addition, the shoulder structure 33 can be an integrally formed part of the mandrel 31 or an assembly part on the mandrel 31.

[0073] Combination Figure 1 , 2 As shown, in some embodiments, the hub motor also includes a caliper fixing structure 6, which is located on the inner side of the steering knuckle 4, and the brake caliper 52 is connected to the caliper fixing structure 6.

[0074] The caliper fixing structure 6 can stably and reliably connect the brake caliper 52 to the steering knuckle 4.

[0075] In some possible implementations, the caliper fixing structure 6 includes a connecting post and a connecting screw, wherein one end of the connecting post is connected to the brake caliper 52, and the other end of the connecting post extends to the inner side of the steering knuckle 4. The connecting screw passes from the outer side of the steering knuckle 4 to the inner side of the steering knuckle 4 and is threadedly connected to the connecting post, thereby connecting the brake caliper 52 to the steering knuckle 4.

[0076] Combination Figure 2 , 3 As shown, in some embodiments, the spindle assembly 3 further includes a thrust bearing 34 and a hub bearing 35, the steering knuckle 4 is rotatably connected to the spindle 31 via the thrust bearing 34, and the second wheel spoke 21 is rotatably connected to the spindle 31 via the hub bearing 35.

[0077] Through the above arrangement, the spindle 31 in the spindle assembly 3 is rotatably connected to the steering knuckle 4 and the second wheel spoke 21 (i.e., the motor stator 2).

[0078] By utilizing the thrust bearing 34 between the spindle 31 and the steering knuckle 4, the axial thrust of the steering knuckle 4 on the spindle 31 can be increased, thereby enhancing the lateral force-bearing capacity of the hub motor.

[0079] In some possible implementations, the motor rotor 1 further includes a first hub portion 13, and the motor stator 2 further includes a second hub portion (not shown in the figure). The motor rotor 1 is connected to the outer ring of the hub bearing 35 via the first hub portion 13, and the inner ring of the hub bearing 35 is connected to the spindle member 31, thereby achieving a rotational connection between the motor rotor 1 and the spindle member 31. Furthermore, since the motor stator 2 needs to be anti-rotatingly connected to the spindle member 31, the motor stator 2 is directly connected to the spindle member 31 via the second hub portion.

[0080] Optionally, the first hub portion 13 is connected to the first spoke portion 11 and extends toward the second end portion 302 of the spindle assembly 3 to form a sufficient annular mating surface for mating with the outer ring of the hub bearing 35.

[0081] The first hub portion 13 increases the mating support area between the motor stator 2 and the hub bearing 35, improving the stability of the spindle assembly 3 rotating around the motor stator 2. Furthermore, the first hub portion 13 extends from the first spoke portion 11 to the second end 302 of the spindle assembly 3, avoiding interference with the replacement and maintenance of the brake 5 and providing sufficient installation space for the brake 5.

[0082] Combination Figure 2 As shown, in some embodiments, the inner side of the steering knuckle 4 is provided with a positioning countersunk hole 41, and the second end 302 of the spindle assembly 3 is located in the positioning countersunk hole 41.

[0083] The positioning countersunk hole 41 can provide positioning for the second end 302 of the spindle assembly 3, thereby improving the positioning and rotation accuracy of the spindle assembly 3 and the steering knuckle 4.

[0084] In some possible implementations, a bearing seat 42 is provided inside the positioning countersunk hole 41, and the bearing seat 42 is connected to the thrust bearing 34, which is beneficial to improving the thrust resistance of the thrust bearing 34.

[0085] Combination Figure 1 As shown, in some embodiments, the steering knuckle 4 includes a connecting structure 43, through which the steering knuckle 4 is connected to the motor stator 2. Optionally, there are multiple connecting structures 43, which are arranged circumferentially at intervals along the axis of the spindle assembly 3, thereby achieving a stable and reliable connection between the steering knuckle 4 and the motor stator 2 at multiple circumferential positions.

[0086] Combination Figure 2 , 3 As shown, the spindle assembly 3 also includes a locking nut 36, which is located on the outside of the first spoke portion 11 and is threadedly connected to the first end 301 of the spindle member 31, thereby locking the first spoke portion 11 onto the spindle member 31.

[0087] On the other hand, this embodiment provides a vehicle that includes the hub motor of this application.

[0088] The vehicle in this embodiment uses the hub motor of this application and has all the beneficial technical effects of all embodiments herein. In some possible implementations, the vehicle has two front wheels and two rear wheels. Optionally, the two front wheels include the hub motor of this application, or the two rear wheels include the hub motor of this application, or both the two front wheels and the two rear wheels include the hub motor of this application.

[0089] It should be noted that, in the description of this application, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0090] In this article, "several" and "at least one" refer to one or more, while "multiple" and "at least two" refer to two or more. "And / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, or B alone. The character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0091] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, features defined as "first" or "second" may explicitly or implicitly include one or more features. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0092] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0093] In the description of this specification, the references to the terms "certain embodiments", "one embodiment", "some embodiments", "illustrative embodiment", "example", "specific example", or "some examples" refer to specific features, structures, materials, or characteristics described in connection with the embodiments or examples that are included in at least one embodiment or example of this application.

[0094] The above description is merely an embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, improvements, etc., made within the principles of this application should be included within the protection scope of this application.

Claims

1. A hub motor, characterized in that, The hub motor includes: a motor rotor (1), a motor stator (2), a spindle assembly (3), a steering knuckle (4), and a brake (5); The motor rotor (1) includes a first spoke portion (11) and a first ring portion (12) connected to each other, and the motor stator (2) includes a second spoke portion (21) and a second ring portion (22) connected to each other; The first spoke portion (11) and the second spoke portion (21) are coaxially sleeved on the spindle assembly (3), and the first spoke portion (11) and the second spoke portion (21) are both located at the first end (301) of the spindle assembly (3); The first wheel rim portion (12) and the second wheel rim portion (22) are coaxially sleeved and connected. A coil winding is arranged on one of the first wheel rim portion (12) and the second wheel rim portion (22), and a permanent magnet is arranged on the other of the first wheel rim portion (12) and the second wheel rim portion (22). A first sealing ring (7) is arranged at one axial end of the annular cavity between the first wheel rim portion (12) and the second wheel rim portion (22), and a second sealing ring (8) is arranged at the other axial end; The steering knuckle (4) is located at the second end (302) of the spindle assembly (3), and the steering knuckle (4) is fixedly connected to the motor stator (2); the brake (5) is located inside the steering knuckle (4) facing the first end (301) of the spindle assembly (3); The brake (5) includes a brake disc (51) and a brake caliper (52); the brake disc (51) is connected to the spindle assembly (3), and the hub motor also includes a caliper fixing structure (6), which is located on the inner side of the steering knuckle (4), and the brake caliper (52) is connected to the caliper fixing structure (6). The caliper fixing structure (6) includes a connecting post and a connecting screw, wherein one end of the connecting post is connected to the brake caliper (52), the other end of the connecting post extends to the inner side of the steering knuckle (4), and the connecting screw passes from the outer side of the steering knuckle (4) to the inner side of the steering knuckle (4) and is threadedly connected to the connecting post.

2. The hub motor according to claim 1, characterized in that, The spindle assembly (3) is connected to the motor rotor (1), and the spindle assembly (3) rotates synchronously with the motor rotor (1); The brake (5) is connected between the steering knuckle (4) and the spindle assembly (3).

3. The hub motor according to claim 2, characterized in that, The spindle assembly (3) includes a spindle component (31), the end of which is provided with a first anti-rotation structure (32), and the first spoke portion (11) is provided with a second anti-rotation structure (111). The first anti-rotation structure (32) and the second anti-rotation structure (111) are connected to prevent rotation.

4. The hub motor according to claim 3, characterized in that, The spindle (31) is provided with a shoulder structure (33), and the brake disc (51) is connected to the side of the shoulder structure (33) facing the second end (302) of the spindle assembly (3).

5. The hub motor according to claim 3, characterized in that, The spindle assembly (3) further includes a thrust bearing (34) and a hub bearing (35). The steering knuckle (4) is rotatably connected to the spindle (31) via the thrust bearing (34), and the second wheel spoke (21) is rotatably connected to the spindle (31) via the hub bearing (35).

6. The hub motor according to claim 1, characterized in that, The inner side of the steering knuckle (4) is provided with a positioning countersunk hole (41), and the second end (302) of the spindle assembly (3) is located in the positioning countersunk hole (41).

7. The hub motor according to claim 1, characterized in that, The steering knuckle (4) includes a connecting structure (43), and the steering knuckle (4) is connected to the motor stator (2) through the connecting structure (43).

8. A vehicle, characterized in that, The vehicle includes a hub motor as described in any one of claims 1 to 7.

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