CN115102334A

CN115102334A - Direct-drive type outer rotor hub motor convenient for debugging of inductance encoder

Info

Publication number: CN115102334A
Application number: CN202210875592.6A
Authority: CN
Inventors: 温群峰
Original assignee: Suzhou Shengyi Motor Co ltd
Current assignee: Suzhou Shengyi Motor Co ltd
Priority date: 2022-07-25
Filing date: 2022-07-25
Publication date: 2022-09-23

Abstract

The invention discloses a direct-drive outer rotor hub motor convenient for debugging an inductance encoder, which comprises a hub shell, a core and the inductance encoder, wherein the core is in the shape of an outer rotor inner stator; the inductive encoder comprises an inductive ring sheet fixedly or integrally arranged on the inner end wall of the hub shell and an encoder PCB fixed on the motor shaft or the stator bracket; the device is characterized in that the other end of the motor shaft is an encoder debugging end, and an encoder debugging hole is axially formed in the encoder debugging end; the inductance encoder is installed close to the encoder debugging end, and the debugging connecting part which stretches into the encoder debugging hole through the radial jack arranged on the motor shaft is arranged on the encoder PCB, and the debugging connecting terminal is arranged on the encoder PCB and is opposite to the mouth part of the encoder debugging hole. The invention can more conveniently and efficiently carry out debugging operation on the internal inductance encoder.

Description

Direct-drive type outer rotor hub motor convenient for debugging of inductance encoder

Technical Field

The invention relates to a direct-drive outer rotor hub motor convenient for debugging an inductive encoder.

Background

Some known hub motors are applied as traveling mechanisms of mobile platforms or production robots, and perform various production tasks including conveying production materials and products. In some enterprise workshops with high automation degrees, the mobile platforms and robots usually need to deal with high-precision transmission operation of different production stations, and the running workshop environment is usually complex in path, so that the running steering precision of the walking mechanism is high in requirement.

In order to directly obtain the steering angular displacement of the hub shell so as to better control the steering precision of the travelling mechanism, an inductive encoder is usually installed inside the existing hub motor. The inductive encoder mainly comprises an induction ring piece (commonly called induction ring piece) and an encoder PCB, wherein a copper foil is attached to the encoder PCB and an annular coil formed by etching is used for being matched with the induction ring piece for induction. In practice, the sensor ring segments are fixed mainly to the rotating part, such as the inner wall of the hub shell, while the encoder PCB is fixed to the fixed part, such as the stator frame or the motor shaft.

In order to enable the inductance encoder to reach the optimal use state and improve the working precision of the inductance encoder, the inductance encoder inside the inductance encoder is generally required to be debugged in the production and practical application of the hub motor at present. The debugging mode is that the electric connector on the debugging wiring of external debugging equipment is pegged graft with the debugging connecting terminal that is equipped with on the encoder PCB board, under in-wheel motor moving state, implements the correction to inductance encoder detection data through external debugging equipment.

Use traditional inner rotor wheel hub motor structure to implement the debugging as the example, among this kind of inner rotor wheel hub motor, at the inside core housing that is equipped with of wheel hub shell, core housing is fixed and motionless with the motor shaft for fixed stator, the rotor is located inside the stator, the output of rotor passes through reduction gears and connects the rotation of drive wheel hub shell. For this reason the encoder PCB board just is fixed on core housing inner wall to core housing outer wall corresponds the debugging connecting terminal position of inside encoder PCB board and is equipped with the trompil, and the response ring piece is then installed in rotor one end. Therefore, for the inner rotor hub motor, the inductance encoder is installed on the machine core, and the connection and debugging of the inductance encoder can be completed only by removing the outer hub shell during debugging.

However, unlike the inner rotor hub motor, the existing direct-drive outer rotor hub motor has no core shell inside the hub shell, and the rotor and the induction ring are both directly fixed on the inner wall of the hub shell. However, in the conventional practice, an encoder debugging lead is arranged on an encoder PCB of the inductance encoder, and the encoder debugging lead is led out to the outside along with a core lead (i.e. a stator winding lead) through a core lead leading-out hole axially arranged at one end of a motor shaft to implement debugging, but in practice, the method has the following problems:

1. the whole back of installing to equipment in the use of in-wheel motor, the one end that is used for drawing the core lead wire on its motor shaft often encapsulates inside the equipment casing, can not unpack the casing easily and make the core lead wire expose. This results in that the encoder debugging lead wire led out together with the core lead wire can not be pulled out quickly for debugging, which brings difficulty to debugging work. Especially for the in-wheel motor in the application, when needing to carry out debugging and maintenance to its inside inductance encoder, the operation can be very loaded down with trivial details, greatly reduced debugging efficiency.

2. For non-specialized debugging personnel, the debugging lead of the encoder is not easy to be distinguished from the lead of the movement, and the debugging work is easy to bring trouble.

3. The longer encoder debugging lead wire of cartridge need be on encoder PCB board, draws forth to the outside of wheel hub shell together via longer core lead wire lead-out hole with the core lead wire again, not only increases manufacturing cost, has also increased manufacturing procedure, has increaseed the complex degree of assembly, has reduced motor production efficiency.

Therefore, at present, it is urgently needed to implement optimization and adjustment on an internal inductance encoder assembling structure of the direct-drive type outer rotor hub motor so as to design the direct-drive type outer rotor hub motor convenient for the debugging of the inductance encoder and further facilitate the implementation of efficient debugging on the inductance encoder.

Disclosure of Invention

The invention aims to: the direct-drive outer rotor hub motor convenient for debugging of the inductance encoder is provided, and can conveniently and efficiently implement debugging operation on the inductance encoder inside the motor.

The technical scheme of the invention is as follows: a direct-drive type outer rotor hub motor convenient for debugging of an inductance encoder comprises a hub shell which is rotatably assembled on a motor shaft through a bearing, and a core and the inductance encoder which are arranged in the hub shell and have the shape of an outer rotor inner stator, wherein the rotor is directly fixed on or integrally formed on the hub shell, the stator is fixed on the motor shaft through a stator support, one end of the motor shaft is a core lead end, and a core lead leading-out hole is axially formed in the motor shaft; the inductive encoder comprises an inductive loop chip and an encoder PCB; the device is characterized in that the other end of the motor shaft is an encoder debugging end, and an encoder debugging hole is axially formed in the encoder debugging end; inductance encoder is close to encoder debugging end installation, and its response ring piece is fixed or integrated into one piece is on wheel hub shell inner end wall, and the encoder PCB board is then fixed on motor shaft or stator support to relative with the response ring piece, be equipped with the debugging connecting portion on this encoder PCB board, it stretches into in the encoder debugging is downthehole via locating the epaxial radial jack of motor, is equipped with the debugging connecting terminal on this debugging connecting portion, and is relative with the oral area in encoder debugging hole.

Furthermore, the encoder PCB is provided with a motor shaft abdicating hole, a protruding piece is formed on the periphery of the motor shaft abdicating hole in a radial protruding mode to serve as the debugging connecting portion, and an abdicating area for the motor shaft to pass through but not to interfere with the protruding piece is reserved in the motor shaft abdicating hole in the radial direction of the protruding piece. This structural design is mainly for facilitating the assembly of encoder PCB board. When the encoder PCB is actually assembled, firstly, the stepping area in the stepping hole of the motor shaft is penetrated to the motor shaft, then the stepping motor shaft radially moves perpendicular to the motor shaft, so that the lug on the stepping motor shaft can stretch into the encoder debugging hole through the radial jack on the motor shaft, and finally, the encoder PCB is fixed.

Furthermore, the motor shaft abdicating hole is eccentrically arranged on the encoder PCB. The eccentric setting of motor shaft hole of stepping down is favorable to the central point that encoder PCB board radial movement back motor shaft can be by the timing to the encoder PCB board to make things convenient for accurate counterpoint of encoder PCB board and response ring piece.

Particularly preferably, the motor shaft abdicating hole is a long circular hole, and the protruding pieces are distributed along the length direction of the long circular hole.

Furthermore, the encoder PCB is fixed to the motor shaft through the encoder mounting disc, the encoder mounting disc is sleeved on the motor shaft through a mounting hole formed in the encoder mounting disc in an interference mode, the periphery of the motor shaft is matched with the mounting hole through a spline or a flat key to be circumferentially positioned in the mounting hole, a shaft shoulder is arranged on the motor shaft and used for the encoder mounting disc to axially abut against, and the encoder PCB is fixed to the encoder mounting disc.

Furthermore, the encoder PCB is provided with a plurality of PCB positioning holes at equal angular intervals along the circumference, and the encoder mounting disc is provided with mounting disc positioning holes corresponding to the PCB positioning holes so as to be penetrated with screws, bolts, connecting pins or rivets to fix the encoder PCB and the encoder mounting disc. The introduction of encoder mounting disc not only is convenient for encoder PCB board at the epaxial assembly of motor fixed, and it can give encoder PCB board certain resistance to force moreover to the debugging connecting portion on it bears the power of inserting of connecting of the electric connector on the debugging wiring of outside debugging equipment better.

Furthermore, the length of the lead end of the movement of the motor shaft extending out of the hub shell is longer than the length of the debugging end of the encoder of the motor shaft extending out of the hub shell; and the outer end wall of the hub shell of the encoder debugging end is formed with a sheath surrounding the encoder debugging end, and the opening part of the sheath is fixed with a detachable or openable protective cover plate so as to cover the opening part of the encoder debugging hole. In practical production, the protective cover plate can be fixed on the outer end wall of the hub shell by using screws, rivets or pins, and can also be installed on the outer end wall of the hub shell by using a hinge or a pivot joint piece in combination with a lock catch. The protection apron can prevent that dust and water from getting into the inside pollution harm that causes of wheel hub shell through encoder debugging hole.

In consideration of further debugging convenience, the invention can also comprise an encoder debugging lead, wherein both ends of the encoder debugging lead are provided with electric connectors, the electric connector at one end of the encoder debugging lead is connected with the debugging connecting terminal, and the electric connector at the other end of the encoder debugging lead is led out through the encoder debugging hole. Like this when actual debugging, debugging personnel need not even to stretch into the electric connector on the debugging wiring of outside debugging equipment in the encoder debugging is downthehole, just can externally accomplish the debugging and connect, and it is more convenient to operate.

Note that, as in the conventional art, the encoder PCB of the present invention employs a loop coil formed by attaching and etching a copper foil for induction with an induction loop sheet. And the induction ring piece is made of a metal alloy material, such as an aluminum alloy, on which magnetic tracks are formed by attaching a magnetic material. The induction ring piece can be directly fixed on the inner end wall of the hub shell by adopting connecting pieces such as screws and the like, and can also be integrally formed by adopting a metal material the same as that of the inner end wall of the hub shell, and magnetic materials are attached to the surface of the induction ring piece to manufacture the magnetic tracks after the induction ring piece is formed.

When the debugging device needs to debug the internal inductance encoder, debugging personnel only need to open the protective cover plate and extend the electric connector on the debugging wiring of the external debugging device into the debugging hole of the encoder to be plugged with the debugging connecting terminal on the debugging connecting part of the encoder PCB, and then debugging can be implemented.

The invention has the advantages that:

1) the motor shaft is specially provided with the encoder debugging end which is distinguished from the lead end of the machine core, and the encoder debugging hole, and meanwhile, the assembly structure of the internal inductance encoder is adjusted and optimized, so that an electric connector on the debugging wiring of external debugging equipment can be directly inserted into the debugging connecting terminal on the PCB of the internal encoder through the encoder debugging hole. Therefore, the method can conveniently and efficiently debug the inductance encoder inside the motor, greatly save the debugging time and improve the debugging efficiency.

2) The debugging end of the encoder and the lead end of the core are not at the same end, so when the in-wheel motor is assembled on equipment such as a mobile platform or a robot for use, and when the debugging operation of the internal inductance encoder is required to be carried out independently, the equipment shell for packaging the lead end of the core does not need to be disassembled as in the prior art, but the debugging end of the encoder without the shielding of the equipment shell can be directly taken down, thus the complicated operation during debugging is greatly reduced, and the debugging efficiency is improved.

3) The invention cancels the design mode that the encoder debugging lead is arranged on the encoder PCB and is led out together with the core lead, thereby avoiding the problems that the encoder debugging lead and the core lead are not easy to distinguish and bring trouble to the debugging work in the prior art, and being more convenient for debugging operation of debugging personnel.

4) Similarly, the invention does not need to arrange longer encoder debugging leads on the encoder PCB and leads the encoder debugging leads and the core leads out of the hub shell through the longer core lead leading-out holes, thereby reducing the production cost, reducing the manufacturing procedures and improving the production efficiency of the motor.

5) The encoder mounting disc is introduced, so that the encoder PCB can be conveniently assembled and fixed on a motor shaft, certain resistance force can be given to the encoder PCB, and the debugging connecting part on the encoder PCB can better bear the plugging force of an electric connector on the debugging wiring of external debugging equipment.

Drawings

The invention is further described below with reference to the following figures and examples:

FIG. 1 is a main sectional view of the structure of the present invention;

FIG. 2 is an axial view of the encoder PCB board of FIG. 1.

Wherein: 1. a motor shaft; 101. a core lead wire leading-out hole; 102. an encoder debugging hole; 103. a radial jack; 104. a shaft shoulder; 2. a hub shell; 201. a sheath; 3. a bearing; 4. a rotor; 5. a stator; 6. a stator support; 7. an induction ring sheet; 8. a encoder PCB board; 801. a tab; 802. a PCB board positioning hole; 9. debugging the connecting terminal; 10. a motor shaft abdicating hole; 11. an encoder mounting plate; 12. a screw; 13. and a protective cover plate.

Detailed Description

The embodiment is as follows: with reference to fig. 1 and fig. 2, a detailed description will be given of a specific embodiment of the direct-drive type outer rotor hub motor convenient for debugging an inductance encoder provided by the present invention as follows:

the motor comprises a motor shaft 1, a hub shell 2 with two ends rotatably assembled on the motor shaft 1 through bearings 3, and a movement and an inductance encoder in the shape of an inner stator 5 arranged in an outer rotor 4 in the hub shell 2, as in the conventional technology. Referring to fig. 1, the hub shell 2 is formed by fixing the left and right end caps and the intermediate ring shell by screws, the magnetic steel positioning ring of the rotor 4 is integrally provided with the intermediate ring shell, and the magnetic steel of the rotor 4 is correspondingly provided on the inner peripheral surface of the intermediate ring shell. The stator 5 is fixed on the motor shaft 1 by the stator bracket 6, and one end (right end in fig. 1) of the motor shaft 1 is a core lead end, a core lead leading-out hole 101 is axially arranged on the motor shaft, and a core lead led out from a winding of the stator 5 is led out through the core lead leading-out hole 101. The inductive encoder is composed of an induction ring piece 7 and an encoder PCB board 8.

The core design of the invention is as follows: the other end (left end in fig. 1) of the motor shaft 1 is set as an encoder debugging end, and an encoder debugging hole 102 extending to the inside of the hub shell 2 is provided in the axial direction thereof. As shown in fig. 1, the whole inductance encoder is installed near the encoder debugging end, the induction ring piece 7 is fixed on the inner end wall (inner wall of left end cover) of the hub shell 2 by using the screw 12, and the encoder PCB board 8 is fixed on the motor shaft 1 by using the encoder installation disc 11 and is opposite to the induction ring piece 7. Be equipped with the debugging connecting portion on this encoder PCB board 8, it stretches into in encoder debugging hole 102 via locating radial jack 103 on motor shaft 1, is equipped with debugging connecting terminal 9 on this debugging connecting portion, and is relative with the oral area in encoder debugging hole 102.

Referring to fig. 2 again, in this embodiment, the encoder PCB 8 is circular, a motor shaft abdicating hole 10 is eccentrically disposed on the encoder PCB, a downward protruding piece 801 is radially formed on the periphery of the motor shaft abdicating hole 10 as the debugging connection portion, and an abdicating area for the motor shaft 1 to pass through without interfering with the protruding piece 801 is left in the radial direction of the protruding piece 801 in the motor shaft abdicating hole 10. In this embodiment, the motor shaft abdicating hole 10 is an oblong hole, and the protruding pieces 801 are distributed along the length direction of the oblong hole. The above structural design is mainly to facilitate the assembly of the encoder PCB board 8. When the encoder PCB 8 is actually assembled, firstly, the motor shaft 1 is penetrated through the abdicating area in the motor shaft abdicating hole 10, then the motor shaft 1 moves radially, so that the lug 801 on the motor shaft 1 can stretch into the encoder debugging hole 102 through the radial jack 103 on the motor shaft 1, and finally the encoder PCB 8 is fixed. And the eccentric setting of motor shaft abdication hole 10 is favorable to motor shaft 1 to be adjusted to the central point of encoder PCB board 8 behind the 8 radial movements of encoder PCB board on the contrary to make things convenient for encoder PCB board 8 and induction ring piece 7's accurate counterpoint.

It is shown in fig. 1 to combine again, encoder PCB board 8 passes through encoder mounting disc 11 to be fixed to motor shaft 1 on, this encoder mounting disc 11 through the mounting hole interference cover that is equipped with on it on motor shaft 1, and in the mounting hole through parallel key and the cooperation of motor shaft 1 periphery with circumferential location, be equipped with shaft shoulder 104 on motor shaft 1 simultaneously and supply encoder mounting disc 11 axial to support to lean on, encoder PCB board 8 is fixed to this encoder mounting disc 11 on.

Referring to fig. 2, in the present embodiment, three PCB positioning holes 802 are formed at equal angular intervals along the circumference of the encoder PCB 8, and a mounting plate positioning hole is formed in the encoder mounting plate 11 corresponding to each PCB positioning hole 802, so that a screw 12 is inserted to fix the encoder PCB 8 and the encoder mounting plate 11. The introduction of the encoder mounting plate 11 not only facilitates the assembly and fixation of the encoder PCB board 8 on the motor shaft 1, but also it can give the encoder PCB board 8 a certain resisting force so that the lug 801 thereon better bears the inserting force of the electrical connector on the debugging wiring of the external debugging device.

Referring to fig. 1, the length of the lead end of the motor shaft 1 extending out of the hub shell 2 is longer than the length of the encoder debugging end extending out of the hub shell 2; and the outer end wall (the outer wall of the left end cover) of the hub shell 2 of the encoder debugging end is formed with a sheath 201 surrounding the encoder debugging end, and the mouth of the sheath 201 is fixed with a detachable protective cover plate 13 by adopting screws so as to cover the mouth of the encoder debugging hole 102. The protective cover 13 prevents dust and water from entering the interior of the hub shell 2 through the encoder adjustment holes 102 and causing contamination damage.

When the invention needs to debug the internal inductance encoder, a debugging person only needs to open the protective cover plate 13, and the electric connector on the debugging wiring of the external debugging equipment extends into the encoder debugging hole 102 to be plugged with the debugging connecting terminal 9 on the lug 801 of the encoder PCB 8, so that debugging can be implemented.

Compared with the prior art, the embodiment has the following advantages:

1) because set up specially on motor shaft 1 and distinguish the encoder debugging end in the core lead end to set up encoder debugging hole 102, adjust the optimization to the assembly structure of inside inductance encoder simultaneously, make things convenient for electric connector on the debugging wiring of outside debugging equipment to be able to see through encoder debugging hole 102 and the debugging connecting terminal 9 on the inside encoder PCB board 8 and directly connect and insert. Therefore, the method can conveniently and efficiently debug the inductance encoder inside the motor, greatly save the debugging time and improve the debugging efficiency.

2) Because encoder debugging end and core lead end are not in same end, consequently when in-wheel motor assembles to using on equipment such as moving platform or robot, when needs are carried out the debugging operation to inside inductance encoder alone, need not like among the prior art unpack apart the equipment casing of encapsulation core lead end, but directly can follow the encoder debugging end that no equipment casing sheltered from and hold the lower hand, loaded down with trivial details operation when having so significantly reduced the debugging, improved debugging efficiency.

3) Because the design mode that the encoder debugging lead is arranged on the encoder PCB 8 and is led out together with the core lead is cancelled, the problems that the encoder debugging lead and the core lead are not easy to distinguish in the prior art, trouble is brought to debugging work easily, and debugging operation of debugging personnel is facilitated.

4) Similarly, as a long encoder debugging lead wire does not need to be arranged on the encoder PCB 8 like the prior art, and the encoder debugging lead wire and the core lead wire are led out to the outside of the hub shell through a long core lead wire leading-out hole, the production cost is reduced, meanwhile, the manufacturing procedures are reduced, and the production efficiency of the motor is improved.

5) The introduction of the encoder mounting plate 11 not only facilitates the assembly and fixation of the encoder PCB board 8 on the motor shaft 1, but also it can give the encoder PCB board 8 a certain resisting force so that the lug 801 thereon better bears the inserting force of the electrical connector on the debugging wiring of the external debugging device.

It should be understood that the above-mentioned embodiments are only illustrative of the technical concepts and features of the present invention, and are intended to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the scope of the present invention. All modifications made according to the spirit of the main technical scheme of the invention are covered in the protection scope of the invention.

Claims

1. A direct-drive type outer rotor hub motor convenient for debugging of an inductance encoder comprises a hub shell (2) rotationally assembled on a motor shaft (1) through a bearing (3), and a core and the inductance encoder which are arranged in the hub shell (2) and are in the shape of an outer rotor (4) and an inner stator (5), wherein the rotor (4) is directly fixed on or integrally formed on the hub shell (2), the stator (5) is fixed on the motor shaft (1) through a stator support (6), one end of the motor shaft (1) is a core lead end, and a core lead leading-out hole (101) is axially arranged at one end of the motor shaft (1); the inductive encoder comprises an inductive loop sheet (7) and an encoder PCB (8); the motor is characterized in that the other end of the motor shaft (1) is an encoder debugging end, and an encoder debugging hole (102) is axially arranged on the other end of the motor shaft; inductance encoder is close to encoder debugging end installation, its response segment (7) are fixed or integrated into one piece is on end wall in wheel hub shell (2), encoder PCB board (8) are then fixed on motor shaft (1) or stator support (6), and relative with response segment (7), be equipped with the debugging connecting portion on this encoder PCB board (8), it stretches into in encoder debugging hole (102) via radial jack (103) on locating motor shaft (1), be equipped with debugging connecting terminal (9) on this debugging connecting portion, it is relative with the oral area of encoder debugging hole (102).

2. The direct-drive outer rotor hub motor convenient for debugging of the inductance encoder is characterized in that a motor shaft abdicating hole (10) is formed in the encoder PCB (8), a protruding piece (801) is formed on the periphery of the motor shaft abdicating hole (10) in a protruding mode in the radial direction and serves as the debugging connecting portion, and an abdicating area for the motor shaft (1) to penetrate through without interfering with the protruding piece (801) is reserved in the motor shaft abdicating hole (10) in the radial direction where the protruding piece (801) is located.

3. Direct-drive external rotor hub motor facilitating debugging of an inductive encoder according to claim 2, characterized in that the motor shaft abdicating hole (10) is eccentrically arranged on the encoder PCB board (8).

4. The direct-drive outer rotor hub motor facilitating debugging of the inductive encoder as recited in claim 2 or 3, wherein the motor shaft abdicating hole (10) is a slotted hole, and the protruding pieces (801) are distributed along the length direction of the slotted hole.

5. The direct-drive outer rotor hub motor convenient for debugging of an inductance encoder is characterized in that an encoder PCB (8) is fixed onto a motor shaft (1) through an encoder mounting disc (11), the encoder mounting disc (11) is sleeved on the motor shaft (1) in an interference mode through a mounting hole formed in the encoder mounting disc, the mounting hole is matched with the periphery of the motor shaft (1) through a spline or a flat key to be circumferentially positioned, meanwhile, a shaft shoulder (104) is arranged on the motor shaft (1) and used for the encoder mounting disc (11) to axially abut against, and the encoder PCB (8) is fixed onto the encoder mounting disc (11).

6. The direct-drive outer rotor hub motor convenient for debugging of an inductance encoder as claimed in claim 5, wherein a plurality of PCB positioning holes (802) are formed in the encoder PCB (8) at equal angular intervals along the circumference, and a mounting plate positioning hole is formed in the encoder mounting plate (11) corresponding to each PCB positioning hole (802) for allowing a screw (12), a bolt, a connecting pin or a rivet to be inserted to fix the encoder PCB (8) and the encoder mounting plate (11).

7. The direct-drive type outer rotor hub motor convenient for debugging of an inductance encoder as claimed in claim 1, wherein the length of the lead end of the movement of the motor shaft (1) extending out of the hub shell (2) is longer than the length of the debugging end of the encoder extending out of the hub shell (2); and the outer end wall of the hub shell (2) of the encoder debugging end is formed with a sheath (201) surrounding the encoder debugging end, and the opening part of the sheath (201) is fixed with a detachable or openable protective cover plate (13) to cover the opening part of the encoder debugging hole (102).

8. The direct-drive type outer rotor hub motor convenient for debugging of the inductance encoder is characterized by further comprising an encoder debugging lead wire, wherein two ends of the encoder debugging lead wire are respectively provided with an electric connector, the electric connector at one end of the encoder debugging lead wire is connected with the debugging connecting terminal (9), and the electric connector at the other end of the encoder debugging lead wire is led out through an encoder debugging hole (102).