An integrated stator support for an embedded PCB device structure

Abstract

The application relates to the technical field of hub motors, and particularly discloses an integrated stator support with an embedded PCB device structure, which comprises a stator shell arranged rotatably in an outer rotor, a stator core, the stator shell is of an integrated structure and is integrally formed on the outer periphery of the stator core, wherein a structure without assembly gap is formed between the stator shell and the outer periphery of the stator core, at least one convex part and a concave part are arranged on the outer periphery of the stator shell, the convex part is connected with a mounting seat of a motor, and the outer periphery of a PCB plate is embedded in the concave part, so that the utilization rate of the internal space of the hub motor is improved, and the problem that noise is caused by the shaking of the stator core during the operation of the motor is solved.

Description

Technical Field

[0001] This application relates to the field of hub motor technology, and in particular to an integrated stator bracket with an embedded PCB device structure. Background Technology

[0002] As a core drive component for new energy vehicles, electric two-wheelers and other equipment, the miniaturization and low-noise design of hub motors are key development directions for the industry. However, existing hub motors suffer from low space utilization and high operating noise in their structural design.

[0003] In traditional hub motors, the PCB board needs to be fixed to the outside of the stator assembly by bolts, cable ties or independent plastic brackets. This kind of fixing method not only requires additional installation space, but also occupies the effective area inside the motor, resulting in a loose internal structure layout and failure to make full use of the limited space.

[0004] Secondly, existing stator supports and stator cores mostly adopt an assembly structure, which easily creates gaps during assembly. These gaps can easily accumulate air and dust. When the motor is running, the stator core and support vibrate relative to each other due to the gaps. At the same time, the air vibration within the gaps couples with the electromagnetic vibration, generating significant operating noise and affecting the user experience.

[0005] Secondly, due to the space occupied by the external PCB board and the gap redundancy of the assembled stator assembly, the existing hub motors are difficult to achieve a compact design, resulting in large radial and axial dimensions of the motor, which cannot be adapted to application scenarios with strict installation space requirements, thus restricting the overall miniaturization of the equipment.

[0006] Therefore, there is an urgent need for a stator support structure that can improve the utilization of the internal space of the hub motor and reduce operating noise. Utility Model Content

[0007] This application provides an integrated stator bracket with an embedded PCB device structure, which solves the problems of large gaps between the stator bracket and the iron core in traditional hub motors, resulting in high vibration and noise during motor operation and low insulation performance. It achieves the goal of improving the utilization rate of the internal space of the hub motor and improves the problem of high noise caused by iron core shaking during motor operation.

[0008] This utility model embodiment provides an integrated stator support with an embedded PCB device structure, comprising: a stator housing rotatably arranged inside an outer rotor; a stator core, wherein the stator housing is an integrally formed structure and integrally formed on the outer periphery of the stator core; wherein the outer periphery of the stator housing and the outer periphery of the stator core form a structure without assembly gap; and the outer periphery of the stator housing is provided with at least one protrusion and one recess, the protrusion being connected to a motor mounting base; and the outer periphery of the PCB board is embedded in the recess.

[0009] In one possible implementation, the stator housing further includes: an inner cylinder body disposed at one end of the protrusion; wherein the recess is disposed at the end of the inner cylinder body away from the protrusion; a plurality of toothed shells are provided and evenly distributed along the outer periphery of the inner cylinder body; wherein a winding is sleeved on the outer periphery of each toothed shell; and a stator slot is formed between adjacent toothed shells.

[0010] In one possible implementation, the inner cylinder body has a first receiving cavity between it and each of the toothed shells; and the toothed shells have a second receiving cavity; wherein one end of the second receiving cavity is connected to the first receiving cavity; the stator core includes: an inner ring body disposed in the first receiving cavity; and stator teeth, which are provided in a plurality of them and are evenly distributed along the outer peripheral surface of the inner ring body; wherein the stator teeth are respectively disposed in each of the second receiving cavities.

[0011] In one possible implementation, the inner cylinder is provided with a bearing seat; the inner wall of the bearing seat is provided with at least one groove; the groove is used to house a bearing, which is sleeved on the circumferential outer wall of the shaft connected to the outer rotor; a plurality of connecting partitions arranged in a ring array are provided between the bearing seat and the inner cylinder.

[0012] In one possible implementation, the recess includes a third receiving cavity and a fourth receiving cavity; wherein the third receiving cavity is located at the end of the inner cylinder, and the surface of the PCB board is embedded in the third receiving cavity; a plurality of fourth receiving cavities are provided, and the plurality of fourth receiving cavities are respectively located between adjacent connecting partitions; wherein the end of each fourth receiving cavity near the third receiving cavity is connected to the third receiving cavity, and the electronic components on the PCB board are located in the fourth receiving cavity.

[0013] In one possible implementation, one of the fourth receiving cavities has a through hole at one end away from the third receiving cavity. The through hole is used to receive the power line of the PCB board, and the power line passes through the through hole and connects to the power interface on the PCB board; wherein the end of the through hole away from the fourth receiving cavity passes through the protrusion.

[0014] In one possible implementation, the inner ring body has a plurality of first mounting holes at one end near the third receiving cavity, the first mounting holes being used for bolting the PCB board to the end wall of the inner ring body.

[0015] In one possible implementation, the inner cylinder has a plurality of second mounting holes on one end wall near the third receiving cavity. Each second mounting hole is used for threaded connection of a guide post. The guide post includes: a column body with a thread on one end of its outer circumferential surface, the column body being threadedly connected to the inner wall of the second mounting hole through the thread; an inlet portion is provided at the end of the column body away from the thread, the outer diameter of the inlet portion gradually increasing from its free end toward the column body, and the minimum outer diameter of the inlet portion being smaller than the guide hole on the PCB board; an insulating heat-conducting sleeve is fitted on the circumferential outer wall of the column body near the inlet portion, the outer wall of the insulating heat-conducting sleeve abutting against the inner wall of the guide hole on the PCB board; the column body is a hollow structure, and a metal heat-conducting rod is provided inside the hollow column body, the inner wall of the insulating heat-conducting sleeve abutting against the metal heat-conducting rod.

[0016] One or more technical solutions provided in the embodiments of this utility model have at least the following technical effects or advantages:

[0017] When preparing the stator housing, the stator core is placed in the injection mold of the stator housing in advance. During the injection molding process of the stator housing, molten plastic or molten resin is applied to the outer circumference of the stator core. After solidification, a dense coating layer without bubbles or pores is formed. This coating layer is in direct contact with the stator core and fits with the stator core without gaps, thus forming the stator housing structure. This improves the problem of air / dust accumulation between the traditional assembled stator support and the core, which causes vibration noise or reduced insulation performance during motor operation.

[0018] Meanwhile, the dense coating layer formed by injection molding is in close contact with the stator core. The stator core is embedded in the stator housing, which can effectively transmit torque and support force, prevent relative displacement between the stator housing and the stator core during motor operation, and improve the impact resistance and fatigue resistance of the overall structure of the stator core and stator housing.

[0019] The formed stator housing has a protrusion for connecting the motor bracket and a recess for embedding the PCB board. The protrusion and the recess are located on the two end faces of the stator housing, respectively. The outer periphery of the PCB board is directly embedded in the recess of the stator housing. The contour of the recess matches the outer periphery of the PCB board, which can realize the radial and axial bidirectional limiting of the PCB board. There is no need for traditional bolts, cable ties or plastic brackets for fixing, which saves the cost of fasteners. At the same time, the PCB board can be integrated into the stator housing structure. Compared with the traditional external PCB bracket, it saves internal space of the motor and facilitates the miniaturization design of the motor.

[0020] Meanwhile, the recessed part of the stator housing wraps around the outer periphery of the PCB board. On the one hand, it can isolate the iron core dust inside the motor and the oil stains on the windings. On the other hand, the stator housing is in contact with the PCB board and can serve as an auxiliary heat dissipation structure for the PCB board, transferring the heat generated by the PCB board during operation to the outside, thus improving the problem of component failure caused by local overheating during PCB board operation.

[0021] Furthermore, the recesses in the stator housing can also buffer the impact of external vibrations on the PCB board, reduce the risk of PCB board solder joints falling off and components becoming loose, and extend the service life of the PCB board. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments of this utility model or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. 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 stator support structure provided in an embodiment of this application;

[0024] Figure 2 This is a schematic diagram of the recessed structure provided in an embodiment of this application;

[0025] Figure 3 This is a schematic diagram of PCB board installation provided in an embodiment of this application;

[0026] Figure 4 This is a schematic diagram of the shaft installation provided in an embodiment of this application;

[0027] Figure 5 This is a schematic diagram of the bearing housing installation provided in an embodiment of this application;

[0028] Figure 6 This is a schematic diagram of the stator core structure provided in an embodiment of this application;

[0029] Figure 7 A schematic diagram of the guide column structure provided in an embodiment of this application.

[0030] icon:

[0031] 100 - Stator housing;

[0032] 110-convex part;

[0033] 120-concave;

[0034] 121 - Third cavity; 122 - Fourth cavity; 123 - Through hole; 124 - Power cord;

[0035] 130 - Inner cylinder; 140 - Toothed shell; 150 - Stator slot; 160 - First receiving cavity; 170 - Second receiving cavity; 180 - Connecting partition;

[0036] 200-Stator core;

[0037] 210 - Inner ring body; 220 - Stator tooth; 230 - First mounting hole; 240 - Second mounting hole;

[0038] 250 - Guide column;

[0039] 251-Column body; 252-Inlet section; 253-Insulating heat-conducting sleeve;

[0040] 300-PCB board;

[0041] 400-winding;

[0042] 500-Bearing housing;

[0043] 600-card slot;

[0044] 700-Bearing;

[0045] 800 - Guide hole. Detailed Implementation

[0046] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some, not all, of the embodiments of the present utility model. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present utility model.

[0047] In the description of the embodiments of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing the embodiments of this utility model and simplifying the description. They 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 utility model. The terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. In addition, the terms "installed," "connected," and "linked" 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 or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components. For those skilled in the art, the specific meaning of the above terms in the embodiments of this utility model can be understood according to the specific circumstances.

[0048] Example 1

[0049] Please see Figures 1-7 An integrated stator support with an embedded PCB device structure includes: a stator housing 100 rotatably arranged within an outer rotor; a stator core 200, wherein the stator housing 100 is an integrally formed structure and integrally formed on the outer periphery of the stator core 200; wherein the stator housing 100 and the outer peripheral surface of the stator core 200 form a structure without assembly gap; and the outer periphery of the stator housing 100 is provided with at least one protrusion 110 and a recess 120, wherein the protrusion 110 is connected to a motor mounting base; and the outer periphery of the PCB board is embedded in the recess 120.

[0050] In the above embodiments, when preparing the stator housing 100, the stator core 200 is placed in the injection mold of the stator housing 100 in advance. During the injection molding process of the stator housing 100, molten plastic or molten resin is deposited on the outer peripheral surface of the stator core 200. After solidification, a dense coating layer without bubbles or pores is formed. This coating layer is in direct contact with the stator core 200 and fits with the stator core 200 without gaps, ultimately forming the structure of the stator housing 100. This improves the problem of air / dust accumulation between the traditional assembled stator support and the core, which causes vibration noise or reduced insulation performance during motor operation.

[0051] Meanwhile, the dense coating layer formed by injection molding is in close contact with the stator core 200. The stator core 200 is embedded in the stator housing 100, which can effectively transmit torque and support force, prevent relative displacement between the stator housing 100 and the stator core 200 during motor operation, and improve the impact resistance and fatigue resistance of the overall structure of the stator core 200 and the stator housing 100.

[0052] The formed stator housing 100 has a protrusion 110 for connecting the motor bracket and a recess 120 for embedding the PCB board. The protrusion 110 and the recess 120 are respectively located on the two end faces of the stator housing 100. The outer periphery of the PCB board is directly embedded in the recess 120 of the stator housing 100. The contour of the recess 120 matches the outer periphery of the PCB board, which can realize the radial and axial bidirectional limiting of the PCB board. There is no need for traditional bolts, cable ties or plastic brackets for fixing, which saves the cost of fasteners and can also integrate the PCB board into the structure of the stator housing 100. Compared with the traditional external PCB bracket, it saves the internal space of the motor and facilitates the miniaturization design of the motor.

[0053] Meanwhile, the recess 120 of the stator housing 100 wraps around the outer periphery of the PCB board. On the one hand, it can isolate the iron core dust inside the motor and the oil stains on the winding 400. On the other hand, the stator housing 100 is in contact with the PCB board and can serve as an auxiliary heat dissipation structure for the PCB board, transferring the heat generated by the PCB board during operation to the outside, thus improving the problem of component failure caused by local overheating during PCB board operation.

[0054] Furthermore, the recess 120 of the stator housing 100 can also buffer the impact of external vibrations on the PCB board, reduce the risk of PCB board solder joints falling off and components becoming loose, and extend the service life of the PCB board.

[0055] Example 2

[0056] Please see Figures 1-7 The stator housing 100 further includes: an inner cylinder 130 disposed at one end of the protrusion 110; wherein the recess 120 is disposed at the end of the inner cylinder 130 away from the protrusion 110; a toothed housing 140, having a plurality of teethed housings evenly distributed along the outer periphery of the inner cylinder 130; wherein a winding 400 is sleeved on the outer periphery of each toothed housing 140; and a stator slot 150 is formed between adjacent toothed housings 140.

[0057] In the above embodiments, the inner cylinder 130 of the stator housing 100 and the protrusion 110 form an integrated structure. The inner cylinder 130 provides an installation base for the gear housing 140. When multiple gear housings 140 are evenly distributed along the outer periphery of the inner cylinder 130, the symmetry of the motor magnetic field distribution can be ensured. When the winding 400 is sleeved on the outer periphery of the gear housing 140, stator slots 150 are naturally formed between adjacent gear housings 140. The end of the winding 400 can be accommodated in the stator slot 150, avoiding the winding 400 from being exposed.

[0058] On the one hand, the integrated inner cylinder 130 and gear housing 140 structure reduces assembly steps and assembly errors compared to the traditional split gear housing 140, ensuring the coaxiality of the gear housing 140 and the inner cylinder 130, thereby improving the stability of motor operation.

[0059] On the other hand, the stator slot 150's ability to accommodate the winding 400 can reduce the space occupied by the winding 400 inside the motor, prevent the winding 400 from interfering with the outer rotor, protect the winding 400 from external friction damage, and extend the service life of the winding 400.

[0060] In addition, the uniformly distributed toothed housing 140 can make the magnetic field generated by the winding 400 more uniform, reduce electromagnetic noise during motor operation, and improve motor operating performance.

[0061] Example 3

[0062] Please see Figures 1-7 The inner cylinder 130 and each of the toothed shells 140 have a first receiving cavity 160; and the toothed shells 140 have a second receiving cavity 170; wherein one end of the second receiving cavity 170 is connected to the first receiving cavity 160; the stator core 200 includes: an inner ring body 210 disposed in the first receiving cavity 160; stator teeth 220, having a plurality of teeth and being evenly distributed along the outer circumferential surface of the inner ring body 210; wherein the stator teeth 220 are respectively disposed in each of the second receiving cavities 170.

[0063] In the above embodiment, the first receiving cavity 160 between the inner cylinder 130 and the toothed shell 140 provides an installation space for the inner ring 210 of the stator core 200. The second receiving cavity 170 in the toothed shell 140 is connected to the first receiving cavity 160, so that the stator teeth 220 of the stator core 200 can be precisely embedded in the second receiving cavity 170, thereby achieving a precise fit between the stator core 200 and the stator shell 100. The inner ring 210 is positioned in the first receiving cavity 160, and the stator teeth 220 are limited in the second receiving cavity 170.

[0064] First, this interlocking structure further eliminates the assembly gap between the stator core 200 and the stator housing 100, avoiding the problems of air and dust accumulation in the gap in the traditional structure, improving the insulation performance of the motor, and reducing vibration and noise caused by the gap.

[0065] Secondly, after the stator teeth 220 are embedded in the second receiving cavity 170, the tooth shell 140 covers a larger area of ​​the stator teeth 220, and the transmission of torque and support force is more uniform, preventing the stator teeth 220 from deforming or displacing when the motor is running at high speed, and improving the overall impact resistance and fatigue resistance of the stator core 200 and stator shell 100.

[0066] Finally, the stator teeth 220 are enclosed by the tooth housing 140, which can isolate the heat generated by the winding 400 from being directly conducted to the stator core 200, thus preventing local overheating of the stator core 200. At the same time, it protects the stator teeth 220 from contamination by the oil in the winding 400 and maintains the magnetic conductivity of the stator core 200.

[0067] Example 4

[0068] Please see Figures 1-7 The inner cylinder 130 is provided with a bearing seat 500; the inner wall of the bearing seat 500 is provided with at least one groove 600; the groove 600 is used to set a bearing 700, and the bearing 700 is sleeved on the circumferential outer wall of the shaft connected to the outer rotor; a plurality of connecting partitions 180 arranged in a ring array are provided between the bearing seat 500 and the inner cylinder 130.

[0069] In the above embodiment, the bearing seat 500 inside the inner cylinder 130 is connected to the inner cylinder 130 by a plurality of annular array connecting partitions 180. The slot 600 on the inner wall of the bearing seat 500 can radially limit the bearing 700, so that the bearing 700 is stably installed in the slot 600.

[0070] When the bearing 700 is fitted onto the outer wall of the outer rotor shaft, the bearing housing 500 forms a rotational fit with the shaft through the bearing 700, providing support for the rotation of the outer rotor. The connecting partition 180 of the annular array achieves a stable connection between the bearing housing 500 and the inner cylinder 130 without affecting the fit between the bearing housing 500 and the shaft.

[0071] The integrated bearing housing 500 and inner cylinder 130 structure saves internal space in the motor compared to the traditional method of setting the bearing housing 500 separately, which is more in line with the requirements of motor miniaturization design. At the same time, it reduces the assembly steps of the bearing housing 500 and reduces assembly errors.

[0072] The radial limiting function of the slot 600 on the bearing 700 can prevent the bearing 700 from radially shifting when the motor is running, ensuring the coaxial rotation of the outer rotor shaft and reducing noise and wear caused by shaft wobbling.

[0073] The connecting partition 180 of the annular array can evenly distribute the radial and axial forces on the bearing housing 500, enhance the connection strength between the bearing housing 500 and the inner cylinder 130, and prevent the bearing housing 500 from breaking due to uneven force. At the same time, the gap between the partitions can form a heat dissipation channel, accelerate the discharge of heat inside the motor, and improve the heat dissipation efficiency of the motor.

[0074] In addition, the connecting partition 180 can also provide some shielding for the bearing 700, preventing iron core dust and winding oil from inside the motor from adhering to the surface of the bearing 700, ensuring the lubrication performance of the bearing 700 and extending the service life of the bearing 700.

[0075] Example 5

[0076] Please see Figures 1-7The recess 120 includes a third receiving cavity 121 and a fourth receiving cavity 122; wherein the third receiving cavity 121 is located at the end of the inner cylinder 130, and the surface of the PCB board is embedded in the third receiving cavity 121; multiple fourth receiving cavities 122 are provided, and multiple fourth receiving cavities 122 are respectively located between adjacent connecting partitions 180; wherein the end of each fourth receiving cavity 122 near the third receiving cavity 121 is connected to the third receiving cavity 121, and the electronic components on the PCB board are located in the fourth receiving cavity 122.

[0077] In the above embodiment, the third receiving cavity 121 of the recess 120 is opened at the end of the inner cylinder 130, so that the surface of the PCB board can be precisely embedded therein, thereby achieving axial positioning of the PCB board.

[0078] Multiple fourth accommodating cavities 122 are respectively disposed between adjacent connecting partitions 180 and communicate with the third accommodating cavity 121. Electronic components on the PCB board can extend into the fourth accommodating cavity 122 through the communication points.

[0079] First, the third receiving cavity 121 and the fourth receiving cavity 122 are partitioned to limit the main body of the PCB board and the electronic components respectively, so as to prevent the electronic components from colliding with the bearings 700, shafts and other moving parts inside the motor due to protruding from the PCB board surface, and to protect the electronic components from mechanical damage.

[0080] Secondly, the fourth receiving cavity 122 is set up using the unused space between adjacent connecting partitions 180, without having to occupy additional internal space of the motor, further optimizing the internal structural layout of the motor, which is conducive to the miniaturization design of the motor.

[0081] Secondly, the connecting partition 180 provides side wall support for the fourth receiving cavity 122, which can isolate the vibration and heat generated during motor operation, reduce the impact of vibration on the solder joints of electronic components, prevent heat from causing electronic component failure, and improve the working stability of the PCB board. Finally, the third receiving cavity 121 covers the surface of the PCB board, which can further isolate iron core dust and winding oil stains, keeping the PCB board surface clean.

[0082] Example 6

[0083] Please see Figures 1-7 One of the fourth receiving cavities 122 has a through hole 123 at one end away from the third receiving cavity 121. The through hole 123 is used to receive the power line 124 of the PCB board. The power line 124 passes through the through hole 123 and connects to the power interface on the PCB board. The end of the through hole 123 away from the fourth receiving cavity 122 passes through the protrusion 110.

[0084] In the above embodiment, after the power line 124 of the PCB board is led out from the power interface, it can pass through the through hole 123 at the end of the fourth receiving cavity 122 away from the third receiving cavity 121, and then extend to the outside of the protrusion 110 through the through hole 123, so as to realize the orderly routing of the power line 124, and the two ends of the channel are respectively connected to the fourth receiving cavity 122 and the protrusion 110.

[0085] The through hole 123 prevents the power cord 124 from being messy inside the motor, prevents the power cord 124 from rubbing against moving parts such as the outer rotor and bearing 700, avoids short circuits caused by damage to the insulation layer of the power cord 124, and ensures power supply safety.

[0086] The power cord 124 is led out through the protrusion 110, making the external wiring position of the motor more regular, facilitating the connection and assembly of the motor with external equipment, improving assembly efficiency, and allowing the protrusion 110 to play a certain role in fixing the power cord 124 in the through hole 123, reducing the pulling of the power cord 124 during motor handling or operation, preventing the connection between the power cord 124 and the power interface of the PCB board from becoming loose, and ensuring power supply stability.

[0087] The through hole 123 is located inside the fourth receiving cavity 122. The protective function of the fourth receiving cavity 122 can be used to prevent iron core dust and winding oil from entering the through hole 123 and adhering to the power line 124, thereby preventing poor contact of the power line 124 and extending the service life of the power line 124.

[0088] Example 7

[0089] Please see Figures 1-7 The inner ring 210 has a plurality of first mounting holes 230 at one end near the third receiving cavity 121. The first mounting holes 230 are used for bolting the PCB board to the end wall of the inner ring 210.

[0090] In the above embodiment, the multiple first mounting holes 230 opened at one end of the inner ring body 210 near the third receiving cavity 121 can correspond to the mounting holes on the PCB board. By passing bolts through the mounting holes on the PCB board and the first mounting holes 230, the PCB board and the end wall of the inner ring body 210 can be bolted together.

[0091] The bolt connection and the recess 120 limit form a fixed structure, which improves the installation stability of the PCB board and prevents the PCB board from shifting or falling off due to vibration when the motor is running at high speed. This improves the problem of unstable fixation that may exist when the traditional recess 120 limit is used alone.

[0092] Example 8

[0093] Please see Figures 1-7The inner cylinder 130 has a plurality of second mounting holes 240 on one end wall near the third receiving cavity 121. Each second mounting hole 240 is used for threaded connection of a guide post 250. The guide post 250 includes: a post body 251, one end of which has a thread on its outer circumferential surface. The post body 251 is threaded to the inner wall of the second mounting hole 240 through the thread. The post body 251 has an inlet portion 252 at the end away from the thread. The outer diameter of the inlet portion 252 extends from its free end toward the end near the thread. The column body 251 gradually increases in size, and the minimum outer diameter of the inlet portion 252 is smaller than the guide hole 800 on the PCB board; an insulating heat-conducting sleeve 253 is fitted on the outer circumferential wall of the column body 251 near the inlet portion 252, and the outer wall of the insulating heat-conducting sleeve 253 abuts against the inner wall of the guide hole 800 on the PCB board; the column body 251 has a hollow structure, and a metal heat-conducting rod is provided inside the hollow column body 251, and the inner wall of the insulating heat-conducting sleeve 253 abuts against the metal heat-conducting rod.

[0094] In the above embodiment, the guide post 250 is threadedly connected to the second mounting hole 240 of the inner cylinder 130 through the thread of the post body 251, thereby fixing the guide post 250. When the PCB board is installed, its guide hole 800 can be quickly aligned along the inlet portion 252 of the guide post 250, so that the PCB board can be accurately fitted onto the guide post 250.

[0095] The insulating heat-conducting sleeve 253 of the guide post 250 is sleeved on one end of the post body 251 near the inlet 252 and abuts against the inner wall of the guide hole 800 of the PCB board 300. At the same time, the inner wall of the insulating heat-conducting sleeve 253 abuts against the metal heat-conducting rod in the hollow structure of the post body 251.

[0096] The tapered structure of the guide section 252 reduces the difficulty of aligning the PCB board guide hole 800 with the guide post 250, making PCB board installation faster, improving assembly efficiency, and improving the installation alignment difficulty caused by the traditional guide post 250 having no guide structure.

[0097] The insulating heat-conducting sleeve 253 has insulating properties, which can prevent the PCB board from conducting electricity with the guide post 250, avoid short circuit of the PCB board, and ensure electrical safety. At the same time, its thermal conductivity can transfer the heat of the PCB board to the metal heat-conducting rod.

[0098] The various embodiments in this specification are described in a progressive manner. For the same or similar parts between the various embodiments, please refer to each other. Each embodiment focuses on describing the differences from other embodiments.

[0099] The above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit this application. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of this application.

Claims

1. An integrated stator support with embedded PCB components, characterized in that, include: The stator housing (100) is rotatably arranged inside the outer rotor; The stator core (200) and the stator shell (100) are integrally formed on the outer periphery of the stator core (200); in The stator housing (100) and the outer peripheral surface of the stator core (200) form a structure without assembly gaps; and The stator housing (100) has at least one protrusion (110) and a recess (120) on its outer periphery, and the protrusion (110) is connected to the motor mounting base; The outer periphery of the PCB board is embedded in the recess (120).

2. The integrated stator support with embedded PCB device structure according to claim 1, characterized in that, The stator housing (100) further includes: An inner cylinder (130) is disposed at one end of the protrusion (110); wherein The recess (120) is located at the end of the inner cylinder (130) away from the protrusion (110); The toothed shell (140) has multiple teeth evenly distributed along the outer periphery of the inner cylinder (130); wherein Each of the toothed housings (140) is fitted with a winding (400) around its outer periphery; Stator slots (150) are formed between adjacent toothed housings (140).

3. The integrated stator support with embedded PCB device structure according to claim 2, characterized in that, The inner cylinder (130) and each of the toothed shells (140) have a first receiving cavity (160); and The toothed housing (140) has a second receiving cavity (170); wherein One end of the second receiving cavity (170) is connected to the first receiving cavity (160); The stator core (200) includes: The inner ring (210) is disposed within the first receiving cavity (160); Stator teeth (220) are provided in multiple portions and are evenly distributed along the outer circumferential surface of the inner ring body (210); wherein The stator teeth (220) are respectively disposed in each of the second receiving cavities (170).

4. The integrated stator support with embedded PCB device structure according to claim 3, characterized in that, The inner cylinder (130) is provided with a bearing seat (500); The bearing housing (500) has at least one retaining groove (600) on its inner wall; The slot (600) is used to house the bearing (700), which is sleeved on the outer circumferential wall of the shaft connected to the outer rotor; A plurality of connecting partitions (180) arranged in a ring array are provided between the bearing housing (500) and the inner cylinder (130).

5. The integrated stator support with embedded PCB device structure according to claim 4, characterized in that, The recess (120) includes a third receiving cavity (121) and a fourth receiving cavity (122); wherein The third receiving cavity (121) is located at the end of the inner cylinder (130), and the surface of the PCB board is embedded in the third receiving cavity (121); The fourth receiving cavity (122) is provided in multiple ways, and the multiple fourth receiving cavities (122) are respectively provided between adjacent connecting partitions (180); wherein Each of the fourth accommodating cavities (122) is connected to the third accommodating cavity (121) at one end near the third accommodating cavity (121), and the electronic components on the PCB board are disposed in the fourth accommodating cavity (122).

6. The integrated stator support with embedded PCB device structure according to claim 5, characterized in that, One of the fourth receiving cavities (122) has a through hole (123) at one end away from the third receiving cavity (121). The through hole (123) is used to receive the power line (124) of the PCB board. The power line (124) passes through the through hole (123) and connects to the power interface on the PCB board. The end of the through hole (123) away from the fourth receiving cavity (122) passes through the protrusion (110).

7. The integrated stator support with embedded PCB device structure according to claim 6, characterized in that, The inner ring (210) has a plurality of first mounting holes (230) at one end near the third receiving cavity (121). The first mounting holes (230) are used for the PCB board to be bolted to the end wall of the inner ring (210).

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