Direct-drive type outer rotor hub motor adopting electromagnetic brake

Abstract

The utility model discloses a direct drive type outer rotor hub motor adopting an electromagnetic brake, which comprises a hub shell assembled on a motor shaft through a bearing, a machine core and an encoder, the machine core is arranged in the hub shell, the machine core is of an outer rotor inner stator structure, one end of the hub shell is an open end for the motor shaft to extend out, and the other end of the hub shell is a closed end. The electromagnetic brake is characterized in that the encoder is arranged on the inner side of the closed end of the hub shell, the electromagnetic brake is arranged on the inner side of the open end of the hub shell and comprises a brake stator and a brake rotor, the brake stator is fixed to the stator of the machine core, and the brake rotor is a brake disc. The spline housing is fixed to the inner wall of the open end of the hub shell through brake connecting screws, the motor shaft penetrates through the center of the spline housing, and the periphery of the spline housing is fixedly connected with the inner periphery of the brake disc through a spline; the machine core is located between the encoder and the electromagnetic brake. The device is compact in structure and convenient to install.

Description

Technical Field

[0001] The utility model relates to a direct-drive outer rotor hub motor adopting an electromagnetic brake. Background Art

[0002] Known direct-drive outer rotor hub motors are often used as the running mechanisms of mobile platforms or production robots, performing various production tasks, including transporting production materials and products. In some highly automated factory workshops, these mobile platforms and robots often handle high-precision transfer operations between different production stations. Furthermore, the workshop environments in which they operate often have complex paths, placing high demands on the running and steering accuracy of the running mechanisms. To this end, these direct-drive outer rotor hub motors are typically equipped with an encoder. For example, utility model patent publication No. 217984790U discloses a direct-drive outer rotor hub motor with an encoder installed within the hub housing. To facilitate encoder debugging, the encoder is positioned inside the closed end of the hub housing. An axial debugging hole is provided at the end of the motor shaft within the hub housing. The encoder PCB is inserted through a radial through-hole in the motor shaft, allowing the connection terminals in the debugging area to align with the debugging hole, facilitating external wiring and debugging. This eliminates the need for debugging leads, preventing interference caused by routing the motor shaft through the open end of the hub housing.

[0003] However, the direct-drive outer rotor hub motor mentioned above still has the following problems in use: since its braking method mostly adopts the addition of a disc brake, V brake or DABS mechanism on the outside of the motor, the disadvantages of this type of brake mechanism include, on the one hand, causing the external structure of the mechanism to be bloated and the installation to be cumbersome, and on the other hand, generating a large back electromotive force during braking, which not only requires a special controller to handle, increasing production costs, but also generates a certain amount of heat and noise, thereby reducing the working performance of the hub motor itself.

[0004] Of course, electromagnetic brakes are a better braking method than the above-mentioned disc brakes, V brakes or DABS mechanisms. However, the internal structure of the existing direct-drive outer rotor hub motor is narrow, especially the closed end inside the hub shell is occupied by the encoder. If the internal structure is not optimized and adjusted, it is difficult to directly install the current modular electromagnetic brake products. Summary of the Invention

[0005] The utility model aims to provide a direct-drive outer rotor hub motor adopting an electromagnetic brake, which has a compact structure and is easy to install.

[0006] The technical solution of the present utility model is: a direct-drive outer rotor hub motor with an electromagnetic brake, comprising a hub shell assembled on the motor shaft via a bearing and an outer rotor inner stator configuration movement and an encoder arranged in the hub shell, one end of the hub shell is an open end from which the power supply shaft extends, and the other end is a closed end, characterized in that the encoder is arranged on the inner side of the closed end of the hub shell, and an electromagnetic brake is provided on the inner side of the open end of the hub shell, which comprises a brake stator and a brake rotor, the former being fixed to the stator of the movement, and the latter being a brake disc, and also comprising a spline sleeve fixed to the inner wall of the open end of the hub shell by a brake connecting screw, the motor shaft passing through the center of the spline sleeve, and the outer periphery of the spline sleeve and the inner periphery of the brake disc being fixed by a spline connection; the movement is located between the encoder and the electromagnetic brake.

[0007] Furthermore, the brake stator described in the present invention includes a yoke with a built-in electromagnetic coil assembly, an armature and a friction plate. The yoke is fixed on the stator of the movement, the friction plate is fixedly connected to the yoke, the armature and the brake disc are arranged in sequence between the yoke and the friction plate along the axial direction of the motor shaft, and a compression spring is provided in the yoke to resist the armature.

[0008] Furthermore, the friction plate in the present invention is connected to the magnetic yoke by a friction plate connecting screw. The friction plate connecting screw is provided with a support sleeve located between the magnetic yoke and the friction plate, and its two ends are respectively against the magnetic yoke and the friction plate. The armature is provided with an armature clearance hole for the support sleeve to pass through.

[0009] Furthermore, the encoder in the present invention is an inductive encoder or a magnetic encoder.

[0010] Furthermore, the above-mentioned inductive encoder in the present invention includes an inductive ring and an encoder PCB board, the inductive ring is fixed on the inner wall of the closed end of the hub shell, and the encoder PCB board is fixed to the encoder positioning frame fixed on the stator of the movement, and is opposite to the inductive ring; the end of the motor shaft close to the closed end of the hub shell is the debugging end, which is provided with an axial encoder debugging hole; the encoder PCB board extends into the encoder debugging hole through a radial jack provided on the motor shaft, and a debugging connection terminal is provided on the encoder PCB board, which is opposite to the mouth of the encoder debugging hole.

[0011] Furthermore, the magnetic encoder described in the present invention includes a magnetic ring and an encoder PCB board, the magnetic ring is fixed on the inner wall of the closed end of the wheel hub shell, and the encoder PCB board is fixed to the encoder positioning frame fixed on the stator of the movement and is opposite to the magnetic ring; the end of the motor shaft close to the closed end of the wheel hub shell is the debugging end, which is provided with an axial encoder debugging hole; the encoder PCB board extends into the encoder debugging hole through a radial jack provided on the motor shaft, and a debugging connection terminal is provided on the encoder PCB board, which is opposite to the mouth of the encoder debugging hole.

[0012] In practice, the encoder positioning bracket is fixed to the movement's stator with screws, while the encoder PCB is further fixed to the encoder positioning bracket with screws, making installation very convenient. The introduction of the encoder positioning bracket not only facilitates the assembly and fixation of the encoder PCB, but also provides a certain resistance to the encoder PCB, so that the debugging connection terminals on it can better withstand the plug-in force of the electrical connectors on the debugging wiring of external debugging equipment.

[0013] Furthermore, the hub shell of the present invention is provided with an axial hole at both the closed and open ends. The inner circumference of the axial hole is assembled onto the motor shaft via the bearing. A removable protective cover is fixed to the exterior of the axial hole at the closed end of the hub shell to cover the axial hole and the opening of the encoder debugging hole inside. In actual production, the protective cover can be fixed to the exterior of the axial hole at the closed end of the hub shell using screws, or alternatively, it can be mounted to the exterior of the axial hole at the closed end of the hub shell using a hinge or pivot joint in combination with a lock. The protective cover prevents dust and water from entering through the encoder debugging hole and contaminating the encoder PCB.

[0014] For further debugging convenience, the present invention can also include an encoder debugging lead with electrical connectors at both ends. The electrical connector at one end connects to the debugging connection terminal on the encoder PCB, while the electrical connector at the other end is led out through the encoder debugging hole. This allows the debugger to complete the debugging connection externally without even inserting the electrical connector on the debugging cable of the external debugging device into the encoder debugging hole, making the operation more convenient.

[0015] It should be noted that, as with conventional technology, the encoder PCB in this invention utilizes a toroidal coil formed by attaching and etching copper foil to the induction ring. However, the induction ring, unlike the magnetic ring, is made of a metal alloy, such as aluminum alloy, with a magnetic track formed by attaching magnetic material. The induction ring can be directly secured to the inner wall of the closed end of the hub shell using fasteners such as screws. Alternatively, the induction ring can be integrally formed from the same metal as the inner wall of the closed end of the hub shell, with magnetic material attached to its surface to create the magnetic track.

[0016] Furthermore, the end of the motor shaft extending out of the open end of the hub shell in the present invention is provided with a movement lead hole connected to the inner side of the hub shell, and the leads of the movement and the electromagnetic brake are both led out through the movement lead hole to ensure that they do not interfere with the encoder debugging leads led out from the debugging end through the encoder debugging hole.

[0017] Furthermore, the stator described in the present invention includes a stator core and a stator coil fixed thereon, the stator coil is opposite to the rotor fixed on the inner circumference of the hub shell, a circle of bosses is formed on the motor shaft, the stator core is fixed to the bosses via core connecting screws, and the brake stator is fixed to the stator core.

[0018] The advantages of the utility model are:

[0019] 1. The utility model arranges the encoder and the electromagnetic brake on both sides of the movement respectively, which not only optimizes the structural layout inside the wheel hub shell, makes full use of the internal space of the wheel hub shell, and makes the overall structure of the motor more compact, but also enhances the assembly convenience of the electromagnetic brake inside the wheel hub shell because a special spline sleeve is provided for fixing the brake disc of the electromagnetic brake.

[0020] 2. The utility model also provides a debugging end on the motor shaft close to the closed end of the hub shell, and an encoder debugging hole, which facilitates debugging by connecting the external debugging equipment to the debugging connection terminal on the internal encoder PCB board through the encoder debugging hole, thereby saving debugging time and improving debugging efficiency.

[0021] 3. The utility model avoids the problem that the encoder debugging lead is led out through the movement lead hole together with the lead of the movement and the electromagnetic brake. Therefore, there is no problem that the encoder debugging lead is difficult to distinguish from the lead of the movement and the lead of the electromagnetic brake, which easily causes trouble to the debugging work, and it is more convenient for the debugging personnel to perform debugging operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0023] Figure 1 This is a main cross-sectional view of the structure of a specific embodiment of the utility model;

[0024] Figure 2 This is a main cross-sectional view of the structure of another specific embodiment of the utility model.

[0025] Among them: 1. Motor shaft; 1a. Boss; 101. Encoder debugging hole; 102. Radial jack; 103. Movement lead hole; 2. Bearing; 3. Hub housing; 4. Rotor; 5. Stator; 501. Stator core; 502. Stator coil; 6. Brake disc; 7. Brake connecting screw; 8. Spline sleeve; 9. Yoke; 10. Armature; 11. Friction plate; 12. Friction plate connecting screw; 13. Support sleeve; 14. Induction ring; 15. Encoder PCB board; 15a. Debug connection terminal; 16. Encoder positioning frame; 17. Protective cover; 18. Core connecting screw; 19. Magnetic ring; 20. Electromagnetic coil assembly; 21. Compression spring. DETAILED DESCRIPTION

[0026] Example 1: Combination Figure 1 As shown, a specific embodiment of the direct-drive outer rotor hub motor using an electromagnetic brake provided by the present invention is described in detail as follows:

[0027] Like conventional technology, this direct-drive outer rotor hub motor with electromagnetic brake has a hub shell 3 assembled on the motor shaft 1 via a bearing 2, and a movement and magnetic encoder configured as an outer rotor 4 and an inner stator 5 arranged inside the hub shell 3. One end of the hub shell 3 is an open end extending from the motor shaft 1, and the other end is a closed end. Figure 1 As shown, the hub housing 3 is composed of left and right end caps and an intermediate ring housing fixed together by screws. The left end cap is the closed end, and its axial hole (not shown) is assembled on the motor shaft 1 via a bearing 2. The right end cap is the open end, and its axial hole (not shown) is also assembled on the motor shaft 1 via a bearing 2, and the motor shaft 1 extends from the axial hole of the open end. The rotor 4 of the movement, i.e., a permanent magnet, is fixed to the inner circumference of the intermediate ring housing. The stator 5 of the movement includes a stator core 501 and a stator coil 502 fixed thereto. The stator coil 502 faces the rotor 4. The motor shaft 1 is formed with a circle of bosses 1a, and the stator core 501 is fixed to the bosses 1a via core connection screws 18.

[0028] The core design of the present utility model is that: the magnetic encoder is arranged on the inner side of the closed end (i.e., the left end cover) of the wheel hub shell 3, and the electromagnetic brake is provided on the inner side of the open end (i.e., the right end cover) of the wheel hub shell 3, which includes a brake stator and a brake rotor. The former is fixed to the stator core 501 of the stator 5, and the latter is the brake disc 6. It also includes a spline sleeve 8 fixed to the inner wall of the open end of the wheel hub shell 3 by a brake connecting screw 7. The motor shaft 1 passes through the center of the spline sleeve 8, and the outer periphery of the spline sleeve 8 is fixed to the inner periphery of the brake disc 6 by a spline connection; the movement is located between the magnetic encoder and the electromagnetic brake.

[0029] Further integration Figure 1As shown, the brake stator in this embodiment further comprises a yoke 9 with a built-in electromagnetic coil assembly 20, an armature 10, and a friction plate 11. The yoke 9 is fixed to the stator core 501 of the stator 5 by screws. The friction plate 11 is fixedly connected to the yoke 9. The armature 10 and the brake disc 6 are sequentially arranged between the yoke 9 and the friction plate 11 along the axial direction of the motor shaft 1. A compression spring 21 is provided within the yoke 9 to abut against the armature 10. The friction plate 11 is specifically connected to the yoke 9 by a friction plate connecting screw 12. A support sleeve 13 is mounted on the friction plate connecting screw 12, positioned between the yoke 9 and the friction plate 11. The support sleeve 13 is positioned between the yoke 9 and the friction plate 11 at its two ends, respectively abutting against the yoke 9 and the friction plate 11. The armature 10 is provided with an armature clearance hole for the support sleeve 13 to pass through.

[0030] Still combined Figure 1 As shown, the magnetic encoder in this embodiment includes a magnetic ring 19 and an encoder PCB board 15. The magnetic ring 19 is fixed on the annular rib on the inner wall of the closed end of the hub shell 3, and the encoder PCB board 15 is fixed to the encoder positioning frame 16 fixed on the stator 5 of the movement and opposite to the magnetic ring 19; the end of the motor shaft 1 close to the closed end of the hub shell 3 is the debugging end, which is provided with an axial encoder debugging hole 101; the encoder PCB board 15 extends into the encoder debugging hole 101 through a radial jack 102 provided on the motor shaft, and the encoder PCB board 15 is provided with a debugging connection terminal 15a opposite to the mouth of the encoder debugging hole 101.

[0031] In this embodiment, a removable protective cover 17 is fixed to the exterior of the axial hole at the closed end of the hub housing 3 to cover the axial hole and the opening of the encoder debugging hole 101 inside it. This embodiment also includes an encoder debugging lead (omitted in the figure), with electrical connectors at both ends. One end of the connector is connected to the debugging connection terminal 15a, while the other end is led out through the opening of the encoder debugging hole 101.

[0032] In this embodiment, the end of the motor shaft 1 extending out of the open end of the hub shell 3 is provided with a movement lead hole 103 (not shown in the figure, see the diagram of embodiment 2) that is connected to the inner side of the hub shell 3. Figure 2 ), the leads (omitted in the figure) of the movement (i.e. the stator coil 502) and the leads (omitted in the figure) of the electromagnetic brake are both led out through the lead hole 103 of the movement.

[0033] Example 2: Combination Figure 2 Another specific embodiment of the present invention is shown. Compared with embodiment 1, the difference lies in that the encoder adopts an inductive encoder.

[0034] Specific combination Figure 2As shown, the hub motor of this embodiment also features a hub housing 3 assembled on the motor shaft 1 via bearings 2, and a movement and inductive encoder configured as an outer rotor 4 and inner stator 5 within the hub housing 3. One end of the hub housing 3 is an open end, through which the motor shaft 1 extends, while the other end is a closed end. The hub housing 3 is composed of left and right end caps and an intermediate ring housing fixed together by screws. The left end cap is the closed end, and its axial hole (not shown) is assembled on the motor shaft 1 via bearings 2. The right end cap is the open end, and its axial hole (not shown) is also assembled on the motor shaft 1 via bearings 2. The motor shaft 1 extends from the axial hole of the open end. The rotor 4 of the movement, that is, the permanent magnet steel is fixed to the inner circumferential surface of the intermediate ring shell. The stator 5 of the movement includes a stator core 501 and a stator coil 502 fixed thereon. The stator coil 502 is opposite to the rotor 4. A circle of bosses 1a is formed on the motor shaft 1, and the stator core 501 is fixed to the bosses 1a via the core connecting screws 18.

[0035] The inductive encoder is arranged on the inner side of the closed end (i.e., the left end cover) of the wheel hub shell 3, while the electromagnetic brake is provided on the inner side of the open end (i.e., the right end cover) of the wheel hub shell 3. The electromagnetic brake includes a brake stator and a brake rotor. The former is fixed to the stator core 501 of the stator 5, and the latter is the brake disc 6. It also includes a spline sleeve 8 fixed to the inner wall of the open end of the wheel hub shell 3 by a brake connecting screw 7. The motor shaft 1 passes through the center of the spline sleeve 8, and the outer periphery of the spline sleeve 8 is fixed to the inner periphery of the brake disc 6 by a spline connection; the movement is located between the inductive encoder and the electromagnetic brake.

[0036] Further integration Figure 2 As shown, the brake stator in this embodiment further includes a built-in electromagnetic coil assembly 20 (not visible in the figure, please refer to Figure 1 ) yoke 9, armature 10 and friction plate 11, the yoke 9 is fixed to the stator core 501 of the stator 5 by screws, the friction plate 11 is fixedly connected to the yoke 9, the armature 10 and the brake disc 6 are sequentially arranged between the yoke 9 and the friction plate 11 along the axial direction of the motor shaft 1, and a compression spring 21 is provided in the yoke 9 to resist the armature 10 (not visible in the figure, please refer to Figure 1 The friction plate 11 is specifically connected to the magnetic yoke 9 by a friction plate connecting screw 12. A support sleeve 13 is sleeved on the friction plate connecting screw 12 and is located between the magnetic yoke 9 and the friction plate 11. The two ends of the support sleeve 13 respectively abut against the magnetic yoke 9 and the friction plate 11. The armature 10 is provided with an armature clearance hole for the support sleeve 13 to pass through.

[0037] Still like Figure 2As shown, the inductive encoder in this embodiment includes an inductive ring piece 14 and an encoder PCB board 15. The inductive ring piece 14 is fixed to the inner wall of the closed end of the hub shell 3 by screws, and the encoder PCB board 15 is fixed to the encoder positioning frame 16 fixed to the stator 5 of the movement and is opposite to the inductive ring piece 14; the end of the motor shaft 1 close to the closed end of the hub shell 3 is the debugging end, which is provided with an axial encoder debugging hole 101; the encoder PCB board 15 extends into the encoder debugging hole 101 through a radial jack 102 provided on the motor shaft, and the encoder PCB board 15 is provided with a debugging connection terminal 15a opposite to the mouth of the encoder debugging hole 101.

[0038] In this embodiment, a removable protective cover 17 is fixed to the exterior of the axial hole at the closed end of the hub housing 3 to cover the axial hole and the opening of the encoder debugging hole 101 inside it. This embodiment also includes an encoder debugging lead (omitted in the figure), with electrical connectors at both ends. One end of the connector is connected to the debugging connection terminal 15a, while the other end is led out through the opening of the encoder debugging hole 101.

[0039] In this embodiment, the end of the motor shaft 1 extending from the open end of the hub shell 3 is provided with a movement lead hole 103 connected to the inner side of the hub shell 3. The leads (omitted in the figure) of the movement (i.e., the stator coil 502) and the leads (omitted in the figure) of the electromagnetic brake are both led out through the movement lead hole 103.

[0040] The above embodiments are intended only to illustrate the technical concepts and features of the present invention. Their purpose is to enable those familiar with the art to understand the present invention and implement it accordingly. They are not intended to limit the scope of protection of the present invention. Any modifications based on the spirit of the main technical solution of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A direct-drive outer rotor hub motor with an electromagnetic brake, comprising a hub housing (3) mounted on a motor shaft (1) via a bearing (2) and a movement and encoder configured as an outer rotor (4) and an inner stator (5) within the hub housing (3), wherein one end of the hub housing (3) is an open end extending from the motor shaft (1) and the other end is a closed end, characterized in that The encoder is arranged on the inner side of the closed end of the wheel hub shell (3), and the inner side of the open end of the wheel hub shell (3) is provided with an electromagnetic brake, which includes a brake stator and a brake rotor, the former being fixed to the stator (5) of the movement, and the latter being a brake disc (6), and also includes a spline sleeve (8) fixed to the inner wall of the open end of the wheel hub shell (3) by a brake connecting screw (7), the motor shaft (1) passes through the center of the spline sleeve (8), and the outer periphery of the spline sleeve (8) is fixed to the inner periphery of the brake disc (6) by a spline connection; the movement is located between the encoder and the electromagnetic brake.

2. The direct-drive outer rotor hub motor with electromagnetic brake according to claim 1, characterized in that The brake stator comprises a magnetic yoke (9) with a built-in electromagnetic coil assembly (20), an armature (10) and a friction plate (11), the magnetic yoke (9) being fixed on the stator (5) of the movement, the friction plate (11) being fixedly connected to the magnetic yoke (9), the armature (10) and the brake disc (6) being sequentially arranged between the magnetic yoke (9) and the friction plate (11) along the axial direction of the motor shaft (1), and a compression spring (21) being arranged in the magnetic yoke (9) to resist the armature (10).

3. The direct-drive outer rotor hub motor with electromagnetic brake according to claim 2, characterized in that The friction plate (11) is connected to the magnetic yoke (9) by a friction plate connecting screw (12); a support sleeve (13) is sleeved on the friction plate connecting screw (12) and is located between the magnetic yoke (9) and the friction plate (11); two ends of the support sleeve are respectively against the magnetic yoke (9) and the friction plate (11); and an armature clearance hole is opened on the armature (10) for the support sleeve (13) to pass through.

4. The direct-drive outer rotor hub motor with electromagnetic brake according to claim 1, characterized in that The encoder is an inductive encoder or a magnetic encoder.

5. The direct-drive outer rotor hub motor with electromagnetic brake according to claim 4, characterized in that The inductive encoder comprises an inductive ring piece (14) and an encoder PCB board (15), wherein the inductive ring piece (14) is fixed on the inner wall of the closed end of the wheel hub shell (3), and the encoder PCB board (15) is fixed to an encoder positioning frame (16) fixed on the stator (5) of the movement and is opposite to the inductive ring piece (14); one end of the motor shaft (1) close to the closed end of the wheel hub shell (3) is a debugging end, which is provided with an axial encoder debugging hole (101); the encoder PCB board (15) extends into the encoder debugging hole (101) via a radial jack (102) provided on the motor shaft, and a debugging connection terminal (15a) is provided on the encoder PCB board (15) and is opposite to the mouth of the encoder debugging hole (101).

6. The direct-drive outer rotor hub motor with electromagnetic brake according to claim 4, characterized in that The magnetic encoder comprises a magnetic ring (19) and an encoder PCB (15), wherein the magnetic ring (19) is fixed on the inner wall of the closed end of the wheel hub shell (3), and the encoder PCB (15) is fixed to an encoder positioning frame (16) fixed on the stator (5) of the movement and is opposite to the magnetic ring (19); an end of the motor shaft (1) close to the closed end of the wheel hub shell (3) is a debugging end, which is provided with an axial encoder debugging hole (101); the encoder PCB (15) extends into the encoder debugging hole (101) via a radial jack (102) provided on the motor shaft, and a debugging connection terminal (15a) is provided on the encoder PCB (15) and is opposite to the mouth of the encoder debugging hole (101).

7. The direct-drive outer rotor hub motor with electromagnetic brake according to claim 5 or 6, characterized in that The closed end of the hub shell (3) and the open end of the hub shell (3) are both provided with an axial hole, and the inner circumference of the axial hole is assembled on the motor shaft (1) via the bearing (2), wherein a detachable protective cover (17) is fixed to the outside of the axial hole at the closed end of the hub shell (3) to cover the axial hole at this end and the mouth of the encoder debugging hole (101) inside it.

8. The direct-drive outer rotor hub motor with electromagnetic brake according to claim 5 or 6, characterized in that It also includes an encoder debugging lead, both ends of which are provided with electrical connectors, the electrical connector at one end being connected to the debugging connection terminal (15a), and the electrical connector at the other end being led out through the mouth of the encoder debugging hole (101).

9. The direct-drive outer rotor hub motor with electromagnetic brake according to claim 1, 5 or 6, characterized in that One end of the motor shaft (1) extending from the open end of the wheel hub shell (3) is provided with a movement lead hole (103) communicating with the inner side of the wheel hub shell (3); the leads of the movement and the leads of the electromagnetic brake are both led out through the movement lead hole (103).

10. The direct-drive outer rotor hub motor with electromagnetic brake according to claim 1, 2, 5 or 6, characterized in that The stator (5) includes a stator core (501) and a stator coil (502) fixed thereon, the stator coil (502) being opposite to a rotor (4) fixed on the inner circumference of a wheel hub shell (3), a boss (1a) being formed on the motor shaft (1), the stator core (501) being fixed to the boss (1a) via a core connecting screw (18), and the brake stator being fixed to the stator core (501).

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