Motor stabilizing structure and brushless motor

Abstract

The utility model belongs to the technical field of brushless motors, and particularly relates to a motor stabilizing structure and a brushless motor. The motor stabilizing structure is provided with a stator assembly, a rotor assembly, a power supply piece and a machine shell, the machine shell is provided with a shell and a rear cover assembly, the rotor assembly is arranged in the stator assembly, the power supply piece is arranged between the rear cover assembly and the stator assembly, and a limiting block is arranged on the shell of the machine shell. A clamping groove is correspondingly formed in the stator iron core in the stator assembly, the stator iron core is stable in the motor through clamping of the limiting block and the clamping groove during installation, and radial deviation of the stator iron core during operation of the motor is prevented through the simple structure.

Description

Technical Field

[0001] The utility model belongs to the technical field of brushless motors, and in particular relates to a motor stabilizing structure and a brushless motor. Background Art

[0002] Brushless motors are a common type of electric motor, widely used in various applications requiring precise control and efficient operation. In brushless motor designs, the stator assembly is often not designed to rotate. Therefore, during design, the stator assembly must be fixed according to the structure to prevent relative displacement caused by the motor's rotation. This could damage the power cables connecting the stator windings and further affect the motor's operation.

[0003] Stator assembly misalignment typically includes axial and radial misalignment. Axial misalignment typically involves sliding up and down relative to the shaft, while radial misalignment occurs as the shaft rotates. Therefore, existing technologies often employ different latches or specialized structures to prevent radial misalignment. However, these structures often complicate the internal structure of the motor, making it difficult to manufacture. Even for simple motor structures, overly complex designs can hinder rapid and large-scale production. Utility Model Content

[0004] In order to solve the above problems, the present invention proposes a motor stabilization structure and a brushless motor, by setting a limit block on the casing to prevent radial rotation, thereby preventing the stator from shifting relative to the motor when the motor rotates, and making the entire limit structure simpler.

[0005] The purpose of the utility model is achieved through the following technical solutions:

[0006] In a first aspect, the present utility model provides a motor stabilization structure, comprising:

[0007] The housing comprises an outer shell and a rear cover assembly, wherein the rear cover assembly covers the outer shell, and the outer shell is provided with a limit block, and the limit block is arranged inside the outer shell;

[0008] The stator assembly includes a bobbin assembly, a stator core, and a coil winding. The coil winding is wound on the stator core, and the bobbin assembly is sleeved on the stator core to fix the stator core. A clamping groove is provided on the outside of the stator core; and a mounting groove is provided inside the stator assembly.

[0009] The rotor assembly is arranged inside the mounting groove, and the rotor assembly includes a magnetic tile assembly and a rotor shaft core, and the magnetic tile assembly is arranged on the circumference of the rotor shaft core;

[0010] The power supply unit includes a circuit board, which is arranged between the rear cover assembly and the stator assembly, and is provided with a connection terminal so that the circuit board can be connected to an external power source;

[0011] The stator core is clamped with the limiting block of the casing through the clamping groove.

[0012] A limit block is provided on the casing, and a snap-in groove is provided at the corresponding position of the stator core, so that when the stator core is installed inside the casing, the limit block is snapped into the snap-in groove, and then when the motor is running, the limit block of the casing limits the stator core, thereby preventing the stator core from rotating radially, thereby preventing the internal circuit and the external connecting line from being twisted off due to the rotation of the stator core, and also preventing the rotation of the stator core from causing unstable vibration of the entire motor.

[0013] In some embodiments, the housing further includes a plurality of pressing openings, which are provided on the abutting peripheral sides of the housing and the rear cover assembly, so that the housing presses the rear cover assembly through the pressing openings.

[0014] When producing the outer shell, multiple clamping ports are usually set. After the rear cover assembly is installed, the clamping ports are pressed to limit the clamping ports on the upper surface of the rear cover assembly and limit the rear cover assembly, thereby preventing axial displacement of the rear cover assembly and preventing the pressure cover from axially displacing the stator core, further improving the stability of the stator core during motor operation.

[0015] In some preferred embodiments, there are three pressing openings, and the circumferential angles of the pressing openings relative to the center of the housing are the same.

[0016] In order to make the pressing mouth press the back cover assembly more evenly, the circumferential angles between the pressing mouths are the same, so that the pressing mouths are evenly distributed around the shell, and thus when pressing, the stress of the pressing mouth on the back cover assembly is more even.

[0017] In some embodiments, the rear cover assembly includes a rear cover plate and a gasket, and the rear cover plate and the gasket are provided with connection ports, and the connection ports correspond to the connection ends so that the external power supply is connected to the circuit board.

[0018] The rear cover assembly includes a cover plate and a gasket. The gasket is used to provide a certain buffer when the pressing mouth is pressed to prevent the stator core from being damaged due to excessive stress. At the same time, a connecting port is provided on the rear cover plate and the gasket. The connecting port is in the form of a notch so that the external power connection line can be connected to the circuit board inside the motor from the connecting port. At the same time, the radial rotation of the stator core can also prevent damage to the circuit.

[0019] In some embodiments, at least one snap-in groove is provided on a peripheral side of the circuit board.

[0020] A clamping groove is provided on the peripheral side of the circuit board so that the circuit board can be clamped between the rear cover assembly and the stator assembly in a clamping manner.

[0021] In some embodiments, the bobbin assembly is provided with a first bobbin and a second bobbin, the first bobbin is provided with a first clamping block, the second bobbin is provided with a second clamping block, and the first clamping block and the second clamping block are clamped at both ends of the stator core respectively.

[0022] The bobbin assembly is provided with a first bobbin and a second bobbin, and the two bobbins are connected to both sides of the stator assembly through different clamping blocks. The bobbin not only provides coil winding space, but also plays a certain role in fixing the stator core to prevent the stator core from shifting.

[0023] In some embodiments, the first wire rack is provided with a clamping portion, and the clamping portion is provided with a first protrusion and a second protrusion. When the first wire rack is clamped in the clamping groove, the second protrusion abuts against the surface of the circuit board, and the first protrusion passes through the clamping groove and is provided on the other side of the circuit board.

[0024] The first wire rack is arranged on the side close to the rear cover assembly, and the clamping portion is arranged on the first protrusion and the second protrusion. The second protrusion abuts against the circuit board to limit the stator assemblies. The first protrusion passes through the clamping groove and is arranged on the other side of the circuit board so that the other side can be limited and fixed, so that the circuit board is limited between the rear cover assembly and the stator assembly to prevent the circuit board from shaking when the motor is running.

[0025] In some embodiments, a sleeve portion is provided on a peripheral side of the gasket, and the sleeve portion is sleeved on the first protrusion, so that the circuit board is limited between the rear cover assembly and the stator assembly.

[0026] The sleeve portion is sleeved on the portion of the first protrusion extending out of the circuit board, so as to limit the position between the circuit board and the rear cover assembly, thereby preventing the circuit board from shaking when the motor is running.

[0027] In some embodiments, the housing is provided with a first through hole, the rear cover is provided with a second through hole, and the rotor shaft core is installed through the first through hole, the mounting groove, and the second through hole.

[0028] The first through hole and the second through hole are arranged on both sides of the installation groove, so that the rotor shaft core is installed in the installation groove through the first through hole and the second through hole.

[0029] In a second aspect, this embodiment provides a brushless motor comprising the motor stabilizing structure according to any one of the first aspects.

[0030] The beneficial effects of the motor stabilization structure and brushless motor of the utility model are:

[0031] The motor stabilization structure is provided with a stator assembly, a rotor assembly, a power supply and a casing, wherein the casing is provided with an outer shell and a back cover assembly, the rotor assembly is arranged in the stator assembly, the power supply is arranged between the back cover assembly and the stator assembly, a limiting block is provided on the outer shell of the casing, and a corresponding clamping groove is provided on the stator core in the stator assembly. The limiting block and the clamping groove are clamped during installation, so that the stator core is stabilized in the motor. Through this simple structure, radial displacement of the stator core during motor operation is prevented. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 This is a schematic diagram of the limit block and the clamping groove of the utility model;

[0033] Figure 2 This is an exploded view of the utility model;

[0034] Figure 3 This is an isometric schematic diagram of the housing of the present invention;

[0035] Figure 4 This is an exploded view of the wire rack assembly, circuit board and back cover assembly of the utility model;

[0036] Figure 5 for Figure 4 A magnified view of part a;

[0037] Figure 6 for Figure 5 A magnified view of part b;

[0038] Figure 7 This is a schematic diagram of the rear cover assembly of the present utility model;

[0039] Figure 8 This is a cross-sectional view of the brushless motor proposed in Example 3 of the present utility model;

[0040] Reference numerals:

[0041] 100, housing; 110, outer shell; 111, stopper; 112, pressing opening; 113, first through hole; 120, rear cover assembly; 121, rear cover plate; 122, gasket; 123, connection port; 124, socket portion; 125, second through hole;

[0042] 200, stator assembly; 210, bobbin assembly; 211, first bobbin; 212, second bobbin; 213, first clamping block; 214, second clamping block; 215, first protrusion; 216, second protrusion; 220, stator core; 221, clamping groove; 230, mounting slot;

[0043] 300, rotor assembly; 310, magnetic tile assembly; 320, rotor shaft core;

[0044] 400, circuit board; 410, connection end; 420, card slot. DETAILED DESCRIPTION

[0045] It should be noted that, in the absence of conflict, the embodiments of the present invention and the technical features in the embodiments can be combined with each other, and the detailed description in the specific implementation method should be understood as an explanation of the purpose of the present invention and should not be regarded as an improper limitation on the present invention.

[0046] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention more clear, the specific technical solutions of the present invention will be further described in detail below with reference to the drawings in the embodiments of the present invention. The following embodiments are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0047] In the embodiments of the present invention, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of the technical features indicated. Therefore, a feature specified as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of the present invention, unless otherwise specified, "plurality" means two or more.

[0048] In addition, in the embodiments of the present invention, directional terms such as "up", "down", "left" and "right" are defined relative to the orientation of the components in the drawings. It should be understood that these directional terms are relative concepts. They are used for relative description and clarification, and they may change accordingly according to changes in the orientation of the components in the drawings.

[0049] In the embodiments of the present invention, unless otherwise clearly specified and limited, the term "connection" should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integrated connection; it can be a direct connection or an indirect connection through an intermediate medium.

[0050] In the embodiments of the present invention, the terms "comprise", "include" or any other variations thereof are intended to cover non-exclusive inclusion. In the absence of further restrictions, an element defined by the phrase "comprises a ..." does not exclude the presence of other identical elements in the process, method, article or device that includes the element.

[0051] In the embodiments of the present invention, words such as "exemplary" or "for example" are used to indicate examples, illustrations, or descriptions. Any embodiment or design described as "exemplary" or "for example" in the embodiments of the present invention should not be construed as being preferred or advantageous over other embodiments or designs. Rather, the use of words such as "exemplary" or "for example" is intended to present the relevant information in a specific manner.

[0052] Example 1:

[0053] like Figure 1~Figure 2 As shown, this embodiment proposes a motor stabilization structure, including:

[0054] The housing 100 includes a shell 110 and a rear cover assembly 120. The rear cover assembly 120 covers the shell 110. The shell 110 is provided with a limit block 111, and the limit block 111 is disposed inside the shell 110.

[0055] The stator assembly 200 includes a bobbin assembly 210, a stator core 220, and a coil winding. The coil winding is wound on the stator core 220, and the bobbin assembly 210 is sleeved on the stator core 220 to fix the stator core 220. A clamping groove 221 is provided on the outer side of the stator core 220. A mounting groove 230 is provided inside the stator assembly 200.

[0056] The rotor assembly 300 is disposed inside the mounting groove 230 . The rotor assembly 300 includes a magnetic tile assembly 310 and a rotor shaft core 320 . The magnetic tile assembly 310 is disposed around the rotor shaft core 320 .

[0057] A power supply unit, including a circuit board 400, which is disposed between the rear cover assembly 120 and the stator assembly 200. The circuit board 400 is provided with a connection terminal 410 so as to connect the circuit board 400 to an external power source;

[0058] The stator core 220 is engaged with the limiting block 111 of the housing 100 via the engaging groove 221 .

[0059] Specifically, the housing 100 comprises an outer shell 110 and a rear cover assembly 120. The outer shell 110 is a hollow cylinder with a notch on one side of its bottom surface. The rear cover assembly 120 fits over the notch in the outer shell 110, creating a space for the rotor assembly 300 and stator assembly 200 to operate. The stator assembly 200 comprises a stator core 220, around which the windings are wound. A wire assembly is sleeved over the stator core 220, securing the stator core 220 while also providing space for the coil windings. The rotor assembly 300 comprises a magnetic tile assembly 310 and an axle. A mounting slot 230 extends through the interior of the stator assembly 200. The rotor shaft 320 passes through the mounting slot 230, while the magnetic tile assembly 310 is positioned within the mounting slot 230 and opposite the stator core 220. A power supply is positioned between the stator assembly 200 and the rear cover assembly 120, allowing for external power connection. A limit block 111 is provided inside the housing 110 , and a clamping groove 221 is provided outside the stator core 220 . The limit block 111 extends into the clamping groove 221 during installation to reduce the radial relative offset between the motor and the stator core 220 .

[0060] A limit block 111 is provided on the housing 100, and a snap-in groove 221 is provided at a corresponding position of the stator core 220, so that when the stator core 220 is installed inside the housing 100, the limit block 111 is snapped into the snap-in groove 420, and then when the motor is running, the limit block 111 of the housing 100 limits the stator core 220, thereby preventing the stator core 220 from rotating radially, thereby preventing the internal circuit and the external connecting line from being twisted off due to the rotation of the stator core 220, and also preventing the rotation of the stator core 220 from causing unstable vibration of the entire motor.

[0061] Example 2:

[0062] like Figures 3 to 7 As shown, based on Example 1, this embodiment further defines and optimizes the internal structure of the motor stabilizing structure.

[0063] In some embodiments, the housing 110 further includes a plurality of pressing openings 112 , which are disposed on the peripheral sides where the housing 110 and the rear cover assembly 120 abut against each other, such that the housing 110 presses the rear cover assembly 120 through the pressing openings 112 .

[0064] Specifically, in order to further improve the internal stability of the stator core 220, a clamping mouth 112 is also provided in the housing 110. The clamping mouth 112 is riveted on the side of the notch of the motor housing 110 using a riveting machine. Its purpose is to enable this part to be deformed and pressed on the back cover assembly 120, thereby limiting the back cover assembly 120 and also limiting the axial displacement of the internal components. When producing the housing 110, multiple clamping mouths 112 are usually provided. After the back cover assembly 120 is installed, the clamping mouth 112 is pressed so that the clamping mouth 112 is clamped and limited on the upper surface of the back cover assembly 120, and the back cover assembly 120 is limited, thereby preventing the axial displacement of the back cover assembly 120, and further preventing the axial displacement of the cover on the stator core 220, further improving the stability of the stator core 220 when the motor is running.

[0065] In some embodiments, there are three pressing openings 112 , and the circumferential angles of the pressing openings 112 relative to the center of the housing 110 are the same.

[0066] When selecting the position of the clamping port 112, it is most preferred to have three clamping ports 112, and the three clamping ports 112 are evenly arranged on the circumferential side, that is, the circumferential angle relative to the center of the shell 110 is consistent, so that when the clamping ports 112 are clamped, the clamping force is the same, preventing the cover from tilting.

[0067] In some optional embodiments, the number of clamping ports 112 can be more than three. However, compared with the minimum number of three, a larger number of clamping ports 112 can improve the stability of the clamping, but the production process increases, which is not conducive to the rapid production of the motor.

[0068] In order to make the clamping openings 112 clamp the rear cover assembly 120 more evenly, the circumferential angles between the clamping openings 112 are the same, so that the clamping openings 112 are evenly distributed around the outer shell 110, and thus when clamping, the stress of the clamping openings 112 on the rear cover assembly 120 is more even.

[0069] In some embodiments, the rear cover assembly 120 includes a rear cover plate 121 and a gasket 122 . The rear cover plate 121 and the gasket 122 are provided with a connection port 123 . The connection port 123 corresponds to the connection end 410 , so that an external power source is connected to the circuit board 400 .

[0070] Specifically, the rear cover plate 121 and the gasket 122 are provided with the same notch, and when installed, the notch forms a corresponding connecting groove, so that the circuit board 400 clamped under the rear cover assembly 120 can be connected to the power line. The rear cover assembly 120 includes a cover plate and a gasket 122. The gasket 122 is used to provide a certain buffer when the pressing opening 112 is pressed, preventing the stator core 220 from being damaged due to excessive stress. At the same time, the rear cover plate 121 and the gasket 122 are provided with a connecting port 123. The connecting port 123 is in the form of a notch, so that the external power connection line can be connected to the circuit board 400 inside the motor through the connecting port 123. At the same time, the radial rotation of the stator core 220 can also prevent the line from being damaged.

[0071] In some embodiments, at least one snap-in slot 420 is provided on a peripheral side of the circuit board 400 .

[0072] Specifically, three snap-in slots 420 may be provided, arranged around the periphery of the circuit board 400. To ensure more stable snapping, the three snap-in slots 420 have consistent circumferential angles relative to the center of the circuit board 400, preventing any warping. The snap-in slots 420 provided around the periphery of the circuit board 400 allow the circuit board 400 to be snap-fitted between the rear cover assembly 120 and the stator assembly 200.

[0073] In some embodiments, the wire frame assembly 210 is provided with a first wire frame 211 and a second wire frame 212, the first wire frame 211 is provided with a first clamping block 213, and the second wire frame 212 is provided with a second clamping block 214, and the first clamping block 213 and the second clamping block 214 are respectively clamped at both ends of the stator core 220.

[0074] Specifically, the first bobbin 211 and the second bobbin 212 are provided with a first clamping block 213 and a second clamping block 214. During installation, the two are mirror-imaged and clamped to the ends of the stator core 220. The first bobbin 211 and the second bobbin 212 are provided with a plurality of protruding columns, so that the protruding columns of the first bobbin 211 and the second bobbin 212 are immersed in the stator core 220 to clamp the bobbin and the stator core 220. The bobbin assembly 210 is provided with the first bobbin 211 and the second bobbin 212. The two bobbins are clamped to the two sides of the stator assembly 200 via different clamping blocks. The bobbin not only provides space for coil windings, but also serves to fix the stator core 220 to prevent it from shifting.

[0075] In some embodiments, the first wire frame 211 is provided with a snap-fitting portion, which includes a first protrusion 215 and a second protrusion 216. When the first wire frame 211 is snapped into the snap-fitting slot 420, the second protrusion 216 abuts the surface of the circuit board 400. The first protrusion 215 passes through the snap-fitting slot 420 and is positioned on the other side of the circuit board 400. Specifically, a snap-fitting portion is provided in a portion of the first wire frame 211 that is distal to the stator core 220 and proximal to the rear cover assembly 120. The snap-fitting portion includes the first protrusion 215 and the second protrusion 216. In this embodiment, the first protrusion 215 is positioned above the second protrusion 216. The end of the first protrusion 215 distal to the second protrusion 216 is provided with a bent portion, which can also be configured as a snap-fitting portion. The bent portion faces inward, so that when the first wire frame 211 is snapped into the snap-fitting slot 420 on the circuit board 400, the bent portion can engage the circuit board 400 and retain the circuit board 400 in position. The engagement of the first protrusion 215 and the abutment of the second protrusion 216 can limit the position of the circuit board 400, further increasing internal stability. The first wire frame 211 is located on the side near the rear cover assembly 120. The engaging portion is provided on the first protrusion 215 and the second protrusion 216. The second protrusion 216 abuts against the circuit board 400 to limit the position of the stator assembly 200. The first protrusion 215 passes through the engaging groove 420 and is located on the other side of the circuit board 400, so that the other side can be fixed in position, so that the circuit board 400 is trapped between the rear cover assembly 120 and the stator assembly 200, preventing the circuit board 400 from shaking during motor operation.

[0076] In some embodiments, a sleeve portion 124 is provided on the periphery of the gasket 122 , and the sleeve portion 124 is sleeved on the first protrusion 215 , so that the circuit board 400 is limited between the rear cover assembly 120 and the stator assembly 200 .

[0077] Specifically, the sleeve portion 124 is U-shaped, with the recessed portion of the sleeve portion 124 being adapted to engage the first protrusion 215, further enhancing overall stability. The sleeve portion 124 is secured to the portion of the first protrusion 215 extending from the circuit board 400, thereby securing the circuit board 400 and the rear cover assembly 120, thereby preventing the circuit board 400 from shaking during motor operation.

[0078] In some embodiments, the housing 110 is provided with a first through hole 113 , the rear cover is provided with a second through hole 125 , and the rotor shaft core 320 is installed through the first through hole 113 , the installation groove 230 , and the second through hole 125 .

[0079] Specifically, the rotor shaft core 320 is installed in the first through hole 113, the second through hole 125 and the installation groove 230, and the first through hole 113 and the second through hole 125 are on both sides of the installation groove 230 and correspond to each other, so that the rotor shaft core 320 is installed and operates between the through holes during installation.

[0080] The first through hole 113 and the second through hole 125 are provided at both sides of the installation groove 230 , so that the rotor shaft core 320 is installed in the installation groove 230 through the first through hole 113 and the second through hole 125 .

[0081] Example 3:

[0082] like Figure 8 As shown, based on Example 1 and Example 2, this embodiment further proposes a brushless motor, including the motor stabilizing structure of any one of them.

[0083] Specifically, the motor is used in household appliances, office equipment, toys, robots, drones, and the like, and can also be equipped with a waterproof structure to enable the small motor to be waterproof and capable of underwater operation. By using the motor base, the internal wiring can be kept tidy when the coil windings are connected to the external power supply, even in high-intensity or complex environments. Furthermore, the internal coil windings and external power supply connection wiring can be standardized across multiple motors, resulting in an aesthetically pleasing internal appearance. During production, standardized operations can be used to improve production efficiency and output standardized products.

[0084] The serial numbers of the utility model embodiments are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments. The above are only preferred embodiments of the utility model and do not limit the scope of the patent of the utility model. Any equivalent device or equivalent process transformation made by using the contents of the utility model specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the scope of patent protection of the utility model.

Claims

1. A motor stabilizing structure, characterized in that: include The housing (100) comprises an outer shell (110) and a rear cover assembly (120), wherein the rear cover assembly (120) covers the outer shell (110), and the outer shell (110) is provided with a limit block (111), and the limit block (111) is arranged inside the outer shell (110); A stator assembly (200) comprises a bobbin assembly (210), a stator core (220), and a coil winding, wherein the coil winding is wound on the stator core (220), and the bobbin assembly (210) is sleeved on the stator core (220) to fix the stator core (220); a clamping groove (221) is provided on the outside of the stator core (220); and a mounting groove (230) is provided inside the stator assembly (200); A rotor assembly (300), the rotor assembly (300) being arranged inside the mounting groove (230), the rotor assembly (300) comprising a magnetic tile assembly (310) and a rotor shaft core (320), the magnetic tile assembly (310) being arranged on a circumferential side of the rotor shaft core (320); A power supply component, comprising a circuit board (400), the circuit board (400) being arranged between the rear cover assembly (120) and the stator assembly (200), the circuit board (400) being provided with a connection terminal (410) so as to enable the circuit board (400) to be connected to an external power source; The stator core (220) is clamped to the limiting block (111) of the casing (100) via the clamping groove (221).

2. The motor stabilizing structure according to claim 1, characterized in that: The housing (110) further comprises a plurality of pressing openings (112), wherein the pressing openings (112) are arranged on the abutting peripheral sides of the housing (110) and the rear cover assembly (120), so that the housing (110) presses the rear cover assembly (120) through the pressing openings (112).

3. The motor stabilizing structure according to claim 2, characterized in that: There are three pressing openings (112), and the circumferential angles of the pressing openings (112) relative to the center of the housing (110) are the same.

4. The motor stabilizing structure according to claim 2, characterized in that: The rear cover assembly (120) comprises a rear cover plate (121) and a gasket (122), wherein the rear cover plate (121) and the gasket (122) are provided with a connection port (123), and the connection port (123) corresponds to the connection end (410) so that an external power source is connected to the circuit board (400).

5. The motor stabilizing structure according to claim 4, characterized in that: At least one clamping groove (420) is provided on the peripheral side of the circuit board (400).

6. The motor stabilizing structure according to claim 5, characterized in that: The bobbin assembly (210) is provided with a first bobbin (211) and a second bobbin (212); the first bobbin (211) is provided with a first clamping block (213); the second bobbin (212) is provided with a second clamping block (214); and the first clamping block (213) and the second clamping block (214) are respectively clamped at two ends of the stator core (220).

7. The motor stabilizing structure according to claim 6, characterized in that: The first wire rack (211) is arranged on a side close to the rear cover assembly (120), and the first wire rack (211) is provided with a clamping portion, and the clamping portion is provided with a first protrusion (215) and a second protrusion (216). When the first wire rack (211) is clamped in the clamping groove (420), the second protrusion (216) abuts against the surface of the circuit board (400), and the first protrusion (215) passes through the clamping groove (420) and is arranged on the other side of the circuit board (400).

8. The motor stabilizing structure according to claim 7, characterized in that: A sleeve portion (124) is provided on the circumferential side of the gasket (122), and the sleeve portion (124) is sleeved on the first protrusion (215), so that the circuit board (400) is limited between the rear cover assembly (120) and the stator assembly (200).

9. The motor stabilizing structure according to claim 2, characterized in that: The housing (110) is provided with a first through hole (113), the rear cover is provided with a second through hole (125), and the rotor shaft core (320) is installed through the first through hole (113), the installation groove (230), and the second through hole (125).

10. A brushless motor, characterized in that: The motor stabilizing structure comprises the motor stabilizing structure according to any one of claims 1 to 9.

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