Brushless motor structure

Abstract

The invention relates to a brushless motor structure which comprises a shell (1), a stator assembly (2) and a rotor assembly (3), the shell (1) is matched with the stator assembly (2) and the rotor assembly (3), the rotor assembly (3) is arranged above the shell (1), the stator assembly (2) is externally arranged below the shell (1), the stator assembly (2) is fixedly connected with the shell (1), and the rotor assembly (3) rotates relative to the shell (1) through the stator assembly (2). According to the design, through the structural design that the stator assembly and the rotor assembly are separately arranged inside and outside the shell, the motor is compact in structure, longer in service life and easy to maintain, when the stator is damaged, only the stator needs to be replaced, the whole motor does not need to be replaced, and the maintenance cost is effectively reduced.

Description

Technical Field

[0001] The present invention relates to the field of motors, and in particular to the field of brushless motor structures. Background Art

[0002] A motor is a device that converts electrical energy or other forms of energy into mechanical energy. The gravitational force generated by electromagnetic induction drives the rotor of the starter to rotate, and the pinion on the rotor also drives the flywheel of the engine to rotate. Specifically, when current flows through a conductor, a magnetic field is generated around the conductor. If the conductor (or coil) is placed in another magnetic field, then according to the law of electromagnetic induction and Fleming's left-hand rule, the conductor will rotate due to the force. Motors are widely used in industrial machinery, transportation, household appliances, decorative crafts and other fields.

[0003] The traditional brushless motor is supported by a shaft, and the motor housing rotates around the stator. However, in some special industries, if there is a shaft, the rotation of any part of the housing, shaft, stator or rotor will affect the use effect. For example, in the application of water pumping in handicrafts, when the shaft is placed in the liquid to stir under the movement of the above-mentioned traditional motor, water leakage will occur, causing damage to the motor. Therefore, it is necessary to develop a newer structural design that can effectively solve the above problems with low maintenance costs. Summary of the invention

[0004] The object of the present invention is to provide a brushless motor structure to solve the problems in the above-mentioned background technology that it cannot meet the requirements of specific scenarios, has poor use effect, and has high production cost.

[0005] The present invention provides the following technical solution: a brushless motor structure, comprising a shell, a stator assembly and a rotor assembly, the shell matches the stator assembly and the rotor assembly, the rotor assembly is arranged above the shell, and the stator assembly is arranged outside the shell below the shell, the stator assembly and the shell are fixedly connected, and the rotor assembly rotates relative to the shell through the stator assembly.

[0006] Preferably, a cylindrical convex shell is provided on the shell, the cylindrical convex shell and the shell are fixedly connected or integrally formed, the rotor assembly is sleeved on the cylindrical convex shell, the stator assembly is arranged below the cylindrical convex shell, the stator assembly and the cylindrical convex shell and / or the shell are fixedly connected, and the rotor assembly rotates relative to the cylindrical convex shell through the stator assembly.

[0007] Preferably, a rotor fixing part for preventing the rotor assembly from rotating is provided on the rotor assembly and / or the housing, and the rotor fixing part is fixedly connected to or integrally formed with the housing and / or the cylindrical convex shell.

[0008] Preferably, the rotor fixing member is a rotating shaft or a limiting member.

[0009] Preferably, a limiting block for preventing the rotor assembly from disengaging during rotation is provided on the rotating shaft. The rotor assembly is connected to the rotating shaft in a matching manner, and the rotor assembly rotates relative to the rotating shaft through the stator assembly.

[0010] Preferably, a shaft hole matching the rotating shaft is provided on the rotor assembly, and the width of the limiting block is greater than the diameter of the shaft hole.

[0011] Preferably, the limiting member is a "7"-shaped frame, a cross-shaped frame, a rice-shaped frame, a "冂"-shaped frame, or a housing matching the rotor assembly.

[0012] Preferably, the rotor assembly includes a rotating magnet and a magnet housing that match each other. The rotating magnet and the magnet housing are fixedly connected. The rotating magnet and the magnet housing are integrally sleeved on the cylindrical convex housing.

[0013] Preferably, a power connection member is provided on the magnet housing. The power connection member is fixedly connected to or integrally formed with the magnet housing, and the power connection member rotates through the integral rotation of the rotating magnet and the magnet housing.

[0014] Preferably, the power connection member is an impeller, a connection groove, or a connection buckle.

[0015] Preferably, the rotating magnet is a magnetic ring or a magnetic sheet.

[0016] Preferably, the stator assembly includes a stator and a control board. The stator is connected to the control board, and the control board is connected to an external power source.

[0017] Preferably, a stator fixing member is provided at the bottom of the housing. The stator assembly is fixedly connected to the housing or the cylindrical convex housing through the stator fixing member.

[0018] Preferably, the stator fixing member is fixedly and sealingly connected to the housing or the cylindrical convex housing.

[0019] Compared with the prior art, the beneficial effects of the present invention are:

[0020] 1. The brushless motor structure of the present invention includes a housing, a stator assembly, and a rotor assembly. The housing is matched with the stator assembly and the rotor assembly. The rotor assembly is arranged above the housing, and the stator assembly is arranged outside and below the housing. The stator assembly is fixedly connected to the housing, and the rotor assembly rotates relative to the housing through the stator assembly. Through the structural design of separating the stator assembly and the rotor assembly and arranging them inside and outside the housing respectively, the structure is compact. When applied to specific scenarios, such as the field of handicrafts pumping water, since the stator assembly and the rotor assembly are separated by the housing, it will not be damaged due to water leakage. Moreover, when the stator is damaged, only the stator needs to be replaced, without replacing the entire motor, effectively reducing the maintenance cost.

[0021] 2. The brushless motor structure of the present invention has a cylindrical convex shell on the housing. The cylindrical convex shell is fixedly connected or integrally formed with the housing. The rotor assembly is sleeved on the cylindrical convex shell, and the stator assembly is arranged below the cylindrical convex shell. The stator assembly is fixedly connected to the cylindrical convex shell and / or the housing, and the rotor assembly rotates relative to the cylindrical convex shell through the stator assembly. Through such a structural design, the stator assembly and the rotor assembly are separated and arranged above and below the cylindrical convex shell. On the one hand, the rotor assembly is not easily detached. On the other hand, the effect of the stator assembly driving the rotor assembly to rotate is also more stable.

[0022] 3. The brushless motor structure of the present invention is provided with a rotor fixing member on the rotor assembly and / or the housing for preventing the rotor assembly from disengaging during rotation. The rotor fixing member is fixedly connected or integrally formed with the housing and / or the cylindrical convex shell. Through such a design, the rotor assembly can be effectively prevented from disengaging, making the rotation effect of the rotor assembly more stable.

[0023] 4. The brushless motor structure of the present invention, the rotor fixing member is a rotating shaft or a limiting member. When the rotor fixing member is a rotating shaft, a limiting block for preventing the rotor assembly from disengaging during rotation is provided on the rotating shaft. The rotor assembly is matched and connected with the rotating shaft, and the rotor assembly rotates relative to the rotating shaft through the stator assembly. Through such a design, the rotor assembly will not disengage during rotation. When placed in a liquid, it will not disengage due to the buoyancy of the liquid.

[0024] 5. The brushless motor structure of the present invention is provided with a shaft hole on the rotor assembly that is matched with the rotating shaft, and the width of the limiting block is greater than the diameter of the shaft hole. Through this structural design, the rotor assembly can be prevented from disengaging from the cylindrical convex shell during rotation.

[0025] 6. The brushless motor structure of the present invention, the limiting member is a "7"-shaped frame, a cross-shaped frame, a rice-shaped frame, a "冂"-shaped frame, or a housing that is matched with the rotor assembly. When the rotor fixing member is a limiting member, it can effectively prevent the rotating magnet from being damaged and limit the rotating magnet to prevent it from disengaging during rotation.

[0026] 7. The brushless motor structure of the present invention has a rotor assembly comprising a rotating magnet and a magnet shell that match each other, the rotating magnet and the magnet shell are fixedly connected, and the rotating magnet and the magnet shell are integrally sleeved on a cylindrical convex shell. By providing the magnet shell, the rotating magnet can be effectively prevented from being damaged and the rotating magnet can be limited to prevent it from being disengaged during the rotation process.

[0027] 8. The brushless motor structure of the present invention is provided with a power link on the magnet shell, the power link and the magnet shell are fixedly connected or integrally formed, and the power link rotates by rotating the magnet and the magnet shell as a whole. By providing the power link, when the brushless motor structure is combined with other components, power can be effectively provided.

[0028] 9. In the brushless motor structure of the present invention, the rotating magnet is a magnetic ring or a magnetic sheet. The rotating magnet can be effectively sleeved on the cylindrical convex shell to make its rotation more stable.

[0029] 10. In the brushless motor structure of the present invention, a stator fixing piece is provided at the bottom of the housing, and the stator assembly is fixedly connected to the housing or the cylindrical convex shell through the stator fixing piece. By providing the motor fixing piece, the stator assembly can be effectively prevented from falling off.

[0030] 11. In the brushless motor structure of the present invention, the stator fixing part is fixedly and sealedly connected to the housing or cylindrical convex shell. The stator fixing part is a sealing connection part, which is fixedly and sealedly connected to the housing or cylindrical convex shell; so that the stator assembly is not easy to fall off and has a waterproof function. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0032] Figure 1 A half-section schematic diagram of the brushless motor structure of the present invention;

[0033] Figure 2 Schematic diagram of the explosion of the brushless motor structure of the present invention Figure 1 ;

[0034] Figure 3 Schematic diagram of the explosion of the brushless motor structure of the present invention Figure 2 ;

[0035] Figure 4 It is a three-dimensional schematic diagram of a "7"-shaped limiter of the brushless motor structure of the present invention;

[0036] Figure 5A three-dimensional schematic diagram of a cross-shaped limiter of the brushless motor structure of the present invention;

[0037] Figure 6 A three-dimensional schematic diagram of a U-shaped limiting member of the brushless motor structure of the present invention;

[0038] Figure 7 It is a three-dimensional schematic diagram of a housing stopper matching the rotor assembly of the brushless motor structure of the present invention.

[0039] In the accompanying drawings, 1. shell, 11. cylindrical convex shell; 2. stator assembly, 21. stator, 22. control board; 3. rotor assembly, 31. rotating magnet, 32. magnet shell, 321. shaft hole; 33. power link; 4. rotor fixing part, 41. rotating shaft, 411. limit block, 42. limit part; 5. motor fixing part. DETAILED DESCRIPTION

[0040] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and cannot be understood as limiting the present application.

[0041] In the description of the present application, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present application, "plurality" means two or more, unless otherwise clearly and specifically defined.

[0042] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installation" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or mutual communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0043] In the description of the present application, it should be understood that the terms "upper", "lower", "side", "front", "rear", etc. indicate orientations or positional relationships based on the installation, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0044] In the description of this application, it should be noted that the term "and / or" is merely a description of the association relationship between associated objects, indicating that three relationships may exist. For example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone.

[0045] It should also be noted that, in the embodiments of the present application, the same figure mark is used to represent the same component or the same part. For the same parts in the embodiments of the present application, the figure may only mark one of the parts or components as an example. It should be understood that the figure mark also applies to other identical parts or components.

[0046] In addition, in the present application, the technical features described in an open manner include closed technical solutions composed of the listed features, and also include open technical solutions containing the listed features.

[0047] In order to further understand the content, features and effects of the invention of this application, the following embodiments are given as examples and described in detail with reference to the accompanying drawings:

[0048] Embodiment 1

[0049] like Figure 1-3 As shown, the brushless motor structure includes a housing 1, a stator assembly 2 and a rotor assembly 3. The housing 1 matches the stator assembly 2 and the rotor assembly 3. The rotor assembly 3 is arranged above the housing 1, and the stator assembly 2 is arranged outside the housing 1 below the housing 1. The stator assembly 2 and the housing 1 are fixedly connected, and the rotor assembly 3 rotates relative to the housing 1 through the stator assembly 2. In this embodiment, the stator assembly and the rotor assembly are separated and arranged inside and outside the housing respectively, so that the structure is compact. When applied to the field of handicraft water pumping, because the stator assembly and the rotor assembly are separated by the housing, they will not be damaged due to water leakage; moreover, when the stator is damaged, only the stator needs to be replaced, and there is no need to replace the entire motor, which effectively reduces the maintenance cost. Of course, the above structural design is not limited to this, and can be other structures that play the same role.

[0050] Specifically, a cylindrical convex shell 11 is provided on the shell 1, and the cylindrical convex shell 11 and the shell 1 are fixedly connected or integrally formed, the rotor assembly 3 is sleeved on the cylindrical convex shell 11, and the stator assembly 2 is arranged below the cylindrical convex shell 11, and the stator assembly 2 is fixedly connected to the cylindrical convex shell 11 and / or the shell 1, and the rotor assembly 3 rotates relative to the cylindrical convex shell 11 through the stator assembly 2. In this embodiment, through such a structural design, the stator assembly and the rotor assembly are split and arranged at the upper and lower parts of the cylindrical convex shell. On the one hand, the rotor assembly is not easy to detach, and on the other hand, the effect of the stator assembly driving the rotor assembly to rotate is also more stable. Of course, the above structural design is not limited to this, and can be other structures that play the same role.

[0051] Specifically, a rotor fixing member 4 is provided on the rotor assembly 3 and / or the housing 1 to prevent the rotor assembly 3 from being disengaged from the rotation. The rotor fixing member 4 is fixedly connected to the housing 1 and / or the cylindrical convex shell 11 or is integrally formed. In this embodiment, the rotor fixing member is fixedly connected to the housing and / or the cylindrical convex shell, and the rotor fixing member effectively prevents the rotor assembly from being disengaged from the cylindrical convex shell, making the rotation effect more stable. Of course, the above structural design is not limited to this, and can be other structures with the same function.

[0052] Specifically, Figure 2 As shown, the rotor fixing member 4 is a rotating shaft 41 or a stopper 42. A stopper 411 is provided on the rotating shaft 41 to prevent the rotor assembly 3 from being disengaged during the rotation process. The rotor assembly 3 and the rotating shaft 41 are matched and connected, and the rotor assembly 3 rotates relative to the rotating shaft 41 through the stator assembly 2. In this embodiment, the rotor fixing member is a rotating shaft, and by providing a stopper on the rotating shaft, the rotor assembly can be prevented from being disengaged from the cylindrical convex shell. Of course, the above structural design is not limited to this, and can be other structures with the same function.

[0053] Specifically, the rotor assembly 3 is provided with an axial hole 321 matching the rotating shaft 41, and the width of the stop block 411 is greater than the diameter of the axial hole 321. Figure 2 As shown, the width of the limit block is greater than the diameter of the shaft hole. Through this structural design, the rotor assembly will not separate from the cylindrical convex shell during rotation. Of course, the above structural design is not limited to this, and can be other structures with the same function.

[0054] Specifically, the rotor assembly 3 includes a rotating magnet 31 and a magnet shell 32 that match each other, the rotating magnet 31 and the magnet shell 32 are fixedly connected, and the rotating magnet 31 and the magnet shell 32 are integrally sleeved on the cylindrical convex shell 11. In this embodiment, by providing the magnet shell, the rotating magnet can be effectively prevented from being damaged and the rotating magnet can be limited to prevent it from being disengaged during the rotation process. Of course, the above structural design is not limited to this, and can be other structures that play the same role.

[0055] Specifically, a power link 33 is provided on the magnet shell 32, the power link 33 and the magnet shell 32 are fixedly connected or integrally formed, and the power link 33 rotates by rotating the magnet 31 and the magnet shell 32 as a whole. In this embodiment, by providing a power link, the brushless motor structure can provide power to other components when combined with them. Of course, the above structural design is not limited to this, and can be other structures with the same function.

[0056] Specifically, the power link 33 is an impeller, a connection slot or a connection buckle. In this embodiment, the power link is a connection slot, and the connection slot is a sliding connection. Through this structural design, when the brushless motor structure is combined with the water-pumping craft, the connection slot is connected to the stirring structure, thereby providing power for the water-pumping craft. Of course, the power link is not limited to this, and can also be other shapes or structures that have the same function.

[0057] Specifically, the rotating magnet 31 is a magnetic ring or a magnetic sheet. In this embodiment, the rotating magnet is a magnetic ring, and this design makes it more stable when rotating on the cylindrical convex shell. Of course, the rotating magnet is not limited to this, and can also be other structures or shapes that play the same role.

[0058] Specifically, the stator assembly 2 includes a stator 21 and a control board 22, the stator 21 and the control board 22 are connected, and the control board 22 is connected to an external power source. In this embodiment, after the control board is connected to the external power source, the stator assembly can be energized to generate a magnetic field. Of course, the above structural design is not limited to this, and can be other structural designs with the same function.

[0059] Specifically, a motor fixing member 5 is provided at the bottom of the housing 1, and the stator assembly 2 is fixedly connected to the housing 1 through the motor fixing member 5. In this embodiment, the motor fixing member is a T-shaped plug, and the stator assembly is fixed in the housing through the motor fixing member, so that the stator assembly is not easy to fall off. Of course, the shape of the motor fixing member is not limited to this, and can be other structures or shapes that have the same function.

[0060] Specifically, the stator fixing member 5 is fixedly and sealedly connected to the housing 1 or the cylindrical convex shell 11. In this embodiment, the motor fixing member is a sealing fixing member, which is sealed and fixedly connected to the cylindrical convex shell, so that the stator assembly is not easy to fall off and has a waterproof function. Of course, the type of the motor fixing member is not limited to this, and it can be other fixing members with the same function.

[0061] Embodiment 2

[0062] The basic structure of the first embodiment is the same as that of the second embodiment, and the main difference is that:

[0063] Specifically, Figure 3 As shown, the rotor fixing member 4 is a rotating shaft 41 or a limiting member 42. In this embodiment, the rotor fixing member is a limiting member. The setting of the limiting member effectively prevents the rotating magnet from being damaged and limits the rotating magnet so that it will not separate from the cylindrical convex shell. Of course, the above structural design is not limited to this, and can be other structures with the same function.

[0064] Specifically, Figure 4-7As shown, the limiting member 42 is a "7"-shaped frame, a cross-shaped frame, a rice-shaped frame, a "冂"-shaped frame, or a housing that matches the rotor assembly 3. In this embodiment, the limiting member 42 is a "7"-shaped frame. Of course, the limiting member is not limited to this, and it can be other shapes or structures that perform the same function.

[0065] Working principle: The brushless motor structure includes a housing, a stator assembly, and a rotor assembly. The housing matches the stator assembly and the rotor assembly. The rotor assembly is arranged above the housing, and the stator assembly is arranged outside the housing below. The stator assembly is fixedly connected to the housing. After the stator assembly is powered on, the rotor assembly rotates relative to the housing through the stator assembly. There is a cylindrical convex shell on the housing, and the cylindrical convex shell is fixedly connected to or integrally formed with the housing. The rotor assembly is sleeved on the cylindrical convex shell, and the stator assembly is arranged below the cylindrical convex shell. The stator assembly is fixedly connected to the cylindrical convex shell and / or the housing. After the stator assembly is powered on, the rotor assembly rotates relative to the cylindrical convex shell through the stator assembly. Through such a structural design, the stator assembly and the rotor assembly are split and arranged above and below the cylindrical convex shell. On the one hand, when the brushless motor structure is applied to the field of handicraft water pumping, the stator will not be damaged due to water leakage. On the other hand, when the stator assembly is damaged, only the stator assembly needs to be replaced, and there is no need to replace the entire motor, effectively reducing the maintenance cost. There is a rotor fixing member on the rotor assembly and / or the housing for preventing the rotor assembly from disengaging during rotation, and the rotor fixing member is fixedly connected to or integrally formed with the housing and / or the cylindrical convex shell. Through such a design, the rotor assembly can be effectively prevented from disengaging. When the rotor assembly is placed in a liquid, the rotor assembly will not disengage from the cylindrical convex shell due to the buoyancy of the liquid.

[0066] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope described in this specification.

[0067] The above-described embodiments only represent several implementation manners of the present invention. The description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the invention patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several deformations and improvements can be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention patent should be subject to the appended claims.

Claims

1. A brushless motor structure, characterized in that: It includes a housing (1), a stator assembly (2) and a rotor assembly (3). The housing (1) is matched with the stator assembly (2) and the rotor assembly (3). The rotor assembly (3) is arranged above the housing (1), and the stator assembly (2) is arranged outside and below the housing (1). The stator assembly (2) is fixedly connected to the housing (1), and the rotor assembly (3) rotates relative to the housing (1) through the stator assembly (2).

2. The brushless motor structure according to claim 1, characterized in that: The housing (1) is provided with a cylindrical convex shell (11). The cylindrical convex shell (11) is fixedly connected or integrally formed with the housing (1). The rotor assembly (3) is sleeved on the cylindrical convex shell (11). The stator assembly (2) is arranged below the cylindrical convex shell (11). The stator assembly (2) is fixedly connected to the cylindrical convex shell (11) and / or the housing (1), and the rotor assembly (3) rotates relative to the cylindrical convex shell (11) through the stator assembly (2).

3. The brushless motor structure according to claim 1 or 2, characterized in that: A rotor fixing member (4) for preventing the rotor assembly (3) from disengaging during rotation is provided on the rotor assembly (3) and / or the housing (1). The rotor fixing member (4) is fixedly connected or integrally formed with the housing (1) and / or the cylindrical convex shell (11).

4. The brushless motor structure according to claim 3, characterized in that: The rotor fixing member (4) is a rotating shaft (41) or a limiting member (42).

5. The brushless motor structure according to claim 4, characterized in that: A limiting block (411) for preventing the rotor assembly (3) from disengaging during rotation is provided on the rotating shaft (41). The rotor assembly (3) is matched and connected with the rotating shaft (41), and the rotor assembly (3) rotates relative to the rotating shaft (41) through the stator assembly (2).

6. The brushless motor structure according to claim 5, characterized in that: A shaft hole (321) matching the rotating shaft (41) is provided on the rotor assembly (3). The width of the limiting block (411) is greater than the diameter of the shaft hole (321).

7. The brushless motor structure according to claim 4, characterized in that: The limiting member (42) is a "7"-shaped frame, a cross-shaped frame, a rice-shaped frame, a "冂"-shaped frame or a housing matching the rotor assembly (3).

8. The brushless motor structure according to any one of claims 4 to 7, characterized in that: The rotor assembly (3) includes a rotating magnet (31) and a magnet housing (32) that are matched with each other. The rotating magnet (31) is fixedly connected to the magnet housing (32), and the rotating magnet (31) and the magnet housing (32) are integrally sleeved on the cylindrical convex shell (11).

9. The brushless motor structure according to claim 8, characterized in that: A power link member (33) is provided on the magnet housing (32). The power link member (33) is fixedly connected or integrally formed with the magnet housing (32), and the power link member (33) rotates through the integral rotation of the rotating magnet (31) and the magnet housing (32).

10. The brushless motor structure according to claim 9, characterized in that: The power link member (33) is an impeller, a connecting groove or a connecting buckle.

11. The brushless motor structure according to claim 9 or 10, characterized in that: The rotating magnet (31) is a magnetic ring or a magnetic sheet.

12. The brushless motor structure according to claim 11, characterized in that: The stator assembly (2) includes a stator (21) and a control board (22). The stator (21) is connected to the control board (22), and the control board (22) is connected to an external power source.

13. The brushless motor structure according to claim 12, characterized in that: A stator fixing part (5) is provided at the bottom of the housing (1), and the stator assembly (2) is fixedly connected to the housing (1) or the cylindrical convex shell (11) via the stator fixing part (5).

14. The brushless motor structure according to claim 13, characterized in that: The stator fixing member (5) is fixedly and sealingly connected to the housing (1) or the cylindrical convex shell (11).

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