Motor structure and its stator assembly

Abstract

Provide a motor structure in which a conventional coil is replaced by a coil circuit board. 【Solution means】It includes a housing, a stator assembly 2 installed in the housing, and a rotor assembly 3 installed in the housing. The stator assembly includes a stator core 21 and a coil circuit board 22 connected to the stator core. The stator core has a core body 211 and a plurality of magnetic conduction columns 212 provided on the core body. A through hole 2111 is formed in the core body, and the plurality of magnetic conduction columns are erected on the core body while surrounding the through hole. The coil circuit board has a plurality of printed wirings 221 corresponding to the number of the plurality of magnetic conduction columns, and the plurality of printed wirings are respectively installed so as to surround the plurality of magnetic conduction columns. The rotor assembly is located in the through hole and is installed on the core body with a gap, and the rotor assembly is rotatable by the stator assembly.

Description

Technical Field

[0001] The present invention relates to a motor structure and its stator assembly, and particularly to a motor structure in which a conventional coil is replaced by a coil circuit board and its stator assembly.

Background Art

[0002] In a stator assembly of a conventional motor structure, a plurality of coils are surrounded on a silicon steel sheet to form a plurality of coil windings on the silicon steel sheet, so that a rotor assembly can rotate by the stator assembly. However, the rotation speed of the motor structure of the stator assembly made of a silicon steel sheet is slow (i.e., the switching speed is slow), the loss is large, and the volume is large.

[0003] Therefore, the inventor of the present invention believes that the above-mentioned defects can be improved, and as a result of repeated research and the application of scientific principles, the present invention is proposed, the design of which is reasonable and effective in improving the above-mentioned defects.

Summary of the Invention

Problems to be Solved by the Invention

[0004] An embodiment of the present invention is to provide a motor structure and its stator assembly that effectively improve the defects that may occur in a conventional motor structure.

Means for Solving the Problems

[0005] An embodiment of the present invention includes a housing, a stator assembly installed in the housing, and a rotor assembly installed in the housing. The stator assembly includes a stator core having a core body and a plurality of magnetic conduction columns installed on the core body, and at least one coil circuit board having a plurality of printed wirings corresponding to the number of the plurality of magnetic conduction columns. A through hole is formed at the center of the core body, and the plurality of magnetic conduction columns are erected on the core body while surrounding the through hole. The plurality of printed wirings are respectively installed so as to surround the plurality of magnetic conduction columns. The rotor assembly is installed in the through hole and is installed on the core body with a gap therebetween, and the rotor assembly is rotatable by the stator assembly, providing a motor structure.

[0006] An embodiment of the present invention also provides a stator assembly of a motor structure, including a stator core having a core body and a plurality of magnetic conduction columns installed on the core body, and at least one coil circuit board having a plurality of printed wirings corresponding to the number of the plurality of magnetic conduction columns. A through hole is provided at the center of the core body, and the plurality of magnetic conduction columns are erected on the core body while surrounding the through hole. The plurality of printed wirings are respectively installed so as to surround the plurality of magnetic conduction columns.

Advantages of the Invention

[0007] In summary, the motor structure and its stator assembly disclosed in the embodiments of the present invention achieve the purposes of increasing the switching speed of the motor control circuit, having a low inductance, a high power density, and a small volume, due to technical features such as "the plurality of printed wirings on at least one coil circuit board are respectively installed so as to surround the plurality of magnetic conduction columns" and "the material of the stator core is a ferrite core or other magnetic materials".

Brief Description of the Drawings

[0008]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Mode for Carrying Out the Invention

[0009] To better understand the features and technical content of the present invention, the following detailed description and drawings related to the present invention are referred to. However, the provided description and drawings are for reference and explanation purposes only and do not limit the present invention.

[0010] Hereinafter, the implementation manner of the "motor structure and its stator assembly" according to the present invention will be described by specific specific examples, and those skilled in the art can understand the advantages and effects of the present invention based on the content disclosed in this specification. The present invention can be implemented or applied by other different specific implementation modes, and for each detail in this specification, various modifications and changes can be made based on different viewpoints and uses without departing from the concept of the present invention. Also, it is explained in advance that the attached drawings of the present invention are simple schematic descriptions and are not drawn based on the actual size. The technical content related to the present invention will be described in more detail based on the following embodiments, but the protection scope of the present invention is not limited by the disclosed content.

[0011] It should be understood that in this specification, terms such as "first", "second", "third", etc. may be used to describe various elements or signals, but these elements or signals are not limited by these terms. These terms are mainly used to distinguish one element from another, or one signal from another. Also, the term "or" used in this specification may, depending on the actual situation, include any one or a combination of multiple items listed in relation to each other.

Example

[0012] [Example 1] Referring to FIGS. 1 to 5, Example 1 of the present invention is shown. It should be explained in advance that the relevant quantities and outer shapes mentioned corresponding to the attached drawings in this example are only for specifically explaining the implementation manner of the present invention and helping to understand the content of the present invention, and do not limit the protection scope of the present invention.

[0013] This example discloses a motor structure 100, and by avoiding using a silicon steel sheet as a magnetic conductor, the volume of the motor structure 100 is reduced. Furthermore, the motor structure 100 of this example can be adapted to the high switching speed of the control circuit, thereby achieving the objectives of low inductance, high power density, and small volume.

[0014] It should be explained in advance that for the convenience of understanding this example, the attached drawings only show the local structure of the motor structure 100, and the structure and connection relationship of each member of the motor structure 100 are clearly shown, but the present invention is not limited to what is shown in the drawings. Hereinafter, each member of the motor structure 100 and their connection relationship will be introduced respectively.

[0015] As shown in Fig. 1, the motor structure 100 of this embodiment includes a housing 1, a stator assembly 2 housed in the housing 1, a rotor assembly 3 installed at a distance from the stator assembly 2, and a control circuit 4 electrically connected to the stator assembly 2 and the rotor assembly 3.

[0016] As shown in Figs. 1 and 2, in this embodiment, the housing 1 is generally a cylindrical body with a hollow shape. That is, a storage space (not shown in the figure) is provided inside the housing 1 so that the stator assembly 2 and the rotor assembly 3 can be housed inside. However, the present invention is not limited to this. For example, in other embodiments not shown in the present invention, the outer shape of the housing 1 may be in the shape of a rectangular parallelepiped, but the storage space of the housing 1 is in a cylindrical shape, and the stator assembly 2 and the rotor assembly 3 are housed inside.

[0017] In this embodiment, the housing 1 has an upper housing (not shown in the figure) and a lower housing (not shown in the figure). The housing 1 can house the stator assembly 2, the rotor assembly 3, and the control circuit 4 inside the housing 1 by the upper housing and the lower housing. However, the present invention is not limited to this.

[0018] As shown in Figs. 3 and 4, in this embodiment, the outer shape of the stator assembly 2 generally presents a cylindrical body, and the cross-sectional shape of the stator assembly 2 generally presents a circular shape. In this way, the stator assembly 2 can be installed inside the housing 1. However, the present invention is not limited to this. The stator assembly 2 includes a stator core 21 and at least one coil circuit board 22 for installing the stator core 21.

[0019] In this embodiment, the material of the stator core 21 is a ferrite core or other magnetic materials. Compared with the material of the silicon steel sheet, the ferrite core material has the advantages of high magnetic conductivity, easy acquisition, low cost, etc. Therefore, by using the ferrite core as the material of the stator core 21, the inductance of the motor structure 100 can be reduced, the number of turns of the coil winding required for the motor structure 100 can be reduced, the overall volume of the motor structure 100 can be reduced, and the cost can be reduced, etc.

[0020] As shown in FIGS. 3 and 4, the outer shape of the stator core 21 generally presents a cylindrical shape and can be efficiently housed in the housing 1. The stator core 21 has a core body 211 and a plurality of magnetic conduction columns 212 installed on the core body 211. The outer shape of the core body 211 generally presents a cylindrical shape. A through hole 2111 is formed at the center of the core body 211, the shape of the through hole 2111 presents a circular shape, and the through hole 2111 and the core body 211 are designed as concentric circles. The core body 211 has a first side surface 2112 and a second side surface 2113 located on the side opposite to the first side surface 2112.

[0021] The shape of the first side surface 2112 generally presents a circular shape, but the present invention is not limited thereto. The first side surface 2112 is close to the at least one coil circuit board 22, and a plurality of the magnetic conduction columns 212 are provided on the first side surface 2112 of the core body 211. The plurality of magnetic conduction columns 212 are erected on the core body 211 while surrounding the through hole 2111.

[0022] It should be noted that the number of the plurality of the magnetic conduction columns 212 is an even number in this embodiment. That is, the number of the plurality of the magnetic conduction columns 212 in this embodiment is 12, and the plurality of the magnetic conduction columns 212 are located on the opposite sides sandwiching the through hole 2111. Thus, coil windings with different polarities are formed, and the rotor assembly 3 is rotated, but the present invention is not limited thereto. For example, in other embodiments not illustrated in the present invention, the number of the plurality of the magnetic conduction columns 212 can be adjusted to be odd or even according to the winding method in the coil circuit board 22.

[0023] In this embodiment, the plurality of the magnetic conduction columns 212 are evenly dispersed in the through hole 2111 on average. That is, the plurality of the magnetic conduction columns 212 are arranged in a circular shape along the periphery of the through hole 2111, and the distances between adjacent ones of the plurality of the magnetic conduction columns 212 are all equal, but the present invention is not limited thereto. For example, in other embodiments not illustrated in the present invention, the distances between adjacent ones of the plurality of the magnetic conduction columns 212 can be adjusted or changed according to the actual design requirements.

[0024] In addition, in this embodiment, the plurality of the magnetic conduction columns 212 and the core body 211 are integrally formed, and the material of the plurality of the magnetic conduction columns 212 is the same as that of the ferrite core of the core body 211, but the present invention is not limited thereto. For example, in other embodiments not illustrated in the present invention, the material of the plurality of the magnetic conduction columns 212 is different from that of the core body 211, and the plurality of the magnetic conduction columns 212 are connected to the core body 211 by a fixed adhesion method (such as soldering, welding, or screwing, etc.), or can be adjusted or changed according to the actual design requirements.

[0025] As shown in FIGS. 3 and 4, the at least one coil circuit board 22 has a plurality of printed wirings 221 corresponding to the number of the plurality of magnetic conduction columns 212, and the plurality of printed wirings 221 are respectively provided so as to surround the plurality of magnetic conduction columns 212. In this embodiment, the number of the at least one coil circuit board 22 is one, but the present invention is not limited thereto. The coil circuit board 22 is a multilayer circuit board, and a plurality of fixing through holes 222 (see FIG. 5) corresponding to the number of the plurality of magnetic conduction columns 212 are provided on the coil circuit board 22, and the plurality of fixing through holes 222 penetrate the plurality of magnetic conduction columns 212 respectively.

[0026] It should be noted that the plurality of fixing through holes 222 are arranged in a circular shape along the periphery of the through hole 2111 so as to correspond to the positions of the plurality of magnetic conduction columns 212, and the distances between adjacent fixing through holes 222 among the plurality of fixing through holes 222 are all equal, but the present invention is not limited thereto. For example, in other embodiments not illustrated in the present invention, the distances between adjacent fixing through holes 222 among the plurality of fixing through holes 222 may be adjusted or changed according to the actual design requirements.

[0027] Furthermore, the plurality of printed wirings 221 on the coil circuit board 22 are arranged so as to surround the plurality of fixing through holes 222. In this embodiment, by installing each printed wiring 221 so as to surround each fixing through hole 222 on the coil circuit board 22, it is equivalent to installing so as to surround each magnetic conduction column 212. That is, each printed wiring 221 is installed so as to surround each magnetic conduction column 212, thereby forming a coil winding. By installing the plurality of printed wirings 221 on the coil circuit board 22 so as to surround the plurality of magnetic conduction columns 212 respectively, a plurality of coil windings are formed, and the rotor assembly 3 can rotate by the plurality of coil windings.

[0028] It should be noted that the plurality of printed wirings 221 on the coil circuit board 22 used in this embodiment can replace the conventional coil. By installing them so as to surround the plurality of magnetic conduction columns 212, a plurality of coil windings different from the coil windings formed by the conventional silicon steel sheet are formed. The stator assembly 2 of this embodiment is significantly smaller in volume than the conventional stator assembly.

[0029] What should be noted above is that in this embodiment, in order to generate magnetic induction between the plurality of coil windings and the rotor assembly 3 to rotate the rotor assembly 3, it is extremely important to install the plurality of printed wirings 221 on the coil circuit board 22 of this embodiment. Below, the plurality of printed wirings 221 on the coil circuit board 22 will be described.

[0030] As shown in FIG. 5, it should be noted in advance that in order to clearly show that each printed wiring 221 on the coil circuit board 22 of this embodiment is installed so as to surround each magnetic conduction column 212, this embodiment will be described using a single printed wiring 221 (that is, the single printed wiring 221 in the V part shown in FIG. 1) on the coil circuit board 22 in FIG. 3.

[0031] The coil circuit board 22 of this embodiment is a multilayer circuit board. The multilayer circuit board includes a plurality of circuit boards, and a plurality of printed wirings 221 are installed on each layer of the circuit board. For ease of explanation, the coil circuit board 22 of this embodiment will be described using a three-layer circuit board, but the present invention is not limited thereto. The number of layers of the coil circuit board 22 can be changed and adjusted according to the requirements of the actual design.

[0032] As shown in FIG. 5, the coil circuit board 22 of this embodiment includes a first-layer coil circuit board 22a, a second-layer coil circuit board 22b, and a third-layer coil circuit board 22c. Each of the printed wirings 221 includes a plurality of annular conductive patterns 2211 on the coil circuit board 22 of each layer, and the plurality of annular conductive patterns 2211 are installed at intervals from each other. That is, the first-layer coil circuit board 22a, the second-layer coil circuit board 22b, and the third-layer coil circuit board 22c include a plurality of first annular conductive patterns 2211a, a plurality of second annular conductive patterns 2211b, and a plurality of third annular conductive patterns 2211c, respectively. The plurality of first annular conductive patterns 2211a, the plurality of second annular conductive patterns 2211b, and the plurality of third annular conductive patterns 2211c correspond to each other along the height direction.

[0033] Furthermore, the distances between any two adjacent first annular conductive patterns 2211a among the plurality of first annular conductive patterns 2211a are all equal, the distances between any two adjacent second annular conductive patterns 2211b among the plurality of second annular conductive patterns 2211b are all equal, and the distances between any two adjacent third annular conductive patterns 2211c among the third annular conductive patterns 2211c are all equal. However, the present invention is not limited thereto. For example, in other embodiments not illustrated in the present invention, the distance between adjacent annular conductive patterns 2211 among the plurality of annular conductive patterns 2211 may gradually increase as it moves away from the fixed through hole 222, or adjustments and changes may be made according to the actual design requirements.

[0034] Furthermore, the diameters of the plurality of the annular conductive patterns 2211 of the coil circuit board 22 of each layer gradually increase as they are farther away from the fixed through-hole 222, and each of the annular conductive patterns 2211 of the adjacent coil circuit boards 22 is electrically connected to each other through the via hole 23. Specifically, in this embodiment, the winding method of the printed wiring 221 on the coil circuit board 22 is that the first annular conductive pattern 2211a is first installed to surround the first annular conductive pattern 2211a (shown in (a) of FIG. 5) on the first lap closest to the magnetic conduction column 212. After that, the first annular conductive pattern 2211a on the first lap is electrically connected through the via hole 23 to the second annular conductive pattern 2211b (shown in (b) of FIG. 5) on the first lap closest to the magnetic conduction column 212 in the second-layer coil circuit board 22b. The second annular conductive pattern 2211b on the first lap is further electrically connected through the via hole 23 to the third annular conductive pattern 2211c (shown in (c) of FIG. 5) on the first lap installed in a surrounding shape closest to the magnetic conduction column 212 of the third-layer coil circuit board 22c. In this way, the first lap in which the printed wiring 221 surrounds the magnetic conduction column 212 is completed.

[0035] After that, the third annular conductive pattern 2211c is installed to surround one lap along the outer periphery of the third annular conductive pattern 2211c on the first lap. Then, according to the above surrounding installation method, the annular conductive patterns 2211 on the second lap and the third lap are installed in sequence. As described above, the diameters of the plurality of the annular conductive patterns 2211 of the coil circuit board 22 of each layer gradually increase as they are farther away from the fixed through-hole 222, and each of the annular conductive patterns 2211 of the adjacent coil circuit boards 22 is electrically connected through the via hole 23.

[0036] What is shown in Fig. 5 is merely one of the winding methods in the printed wiring 221 of this embodiment, and the present invention is not limited thereto. For example, in other embodiments not illustrated in the present invention, in the printed wiring 221, first, a plurality of the annular conductive patterns 2211 are respectively installed in each layer of the coil circuit board 22, and then, a plurality of the annular conductive patterns 2211 in any two adjacent coil circuit boards 22 may be electrically connected through one of the via holes 23.

[0037] Again, referring to Figs. 1 and 2, the rotor assembly 3 is installed on the core body 211 with a gap therebetween, and the rotor assembly 3 can be rotated by the stator assembly 2. Specifically, the rotor assembly 3 includes a rotor bearing 31 and a rotating shaft 32 installed on the rotor bearing 31, and the rotating shaft 32 is located at the axis of the rotor bearing 31.

[0038] As shown in Fig. 1, the control circuit 4 can control the stator assembly 2 and the rotor assembly 3 to rotate the rotating shaft 32 of the rotor assembly 3 within the through hole 2111 of the stator assembly 2. Specifically, the control circuit 4 can be installed on a control circuit board (not shown in the figure). The control circuit 4 is electrically connected to the stator assembly 2 and the rotor assembly 3 through the control circuit board (it is a commonly used technical means for those skilled in the art for the control circuit 4 to be electrically connected to the stator assembly 2 and the rotor assembly 3. For the sake of easy explanation, only the fact that the control circuit 4 is electrically connected to the stator assembly 2 is simply shown in Fig. 1) to control the stator assembly 2 and the rotor assembly 3 so that the rotating shaft 32 of the rotor assembly 3 can rotate within the through hole 2111 of the stator assembly 2, but the present invention is not limited thereto.

[0039] For example, in other embodiments not illustrated in the present invention, the control circuit 4 is integrated on the coil circuit board 22, and the control circuit 4 is electrically connected to the stator assembly 2 and the rotor assembly 3 through the coil circuit board 22, and controls the stator assembly 2 and the rotor assembly 3 so that the rotation axis 32 of the rotor assembly 3 can rotate within the through hole 2111 of the stator assembly 2.

[0040] [Embodiment 2] Referring to FIG. 6, Embodiment 2 of the present invention is shown. Since this embodiment is similar to Embodiment 1 above, the common points of the two embodiments will not be described in detail, and the differences when this embodiment is compared with Embodiment 1 above will be generally described as follows.

[0041] As shown in FIG. 6, the winding method of the plurality of printed wirings 221 on the coil circuit board 22 is different from that of the embodiments of FIGS. 1 to 5. The plurality of printed wirings 221 of the coil circuit board 22 in this embodiment are installed in a set of two magnetic conduction columns 212 so as to surround them, and one coil winding is formed. That is, the plurality of printed wirings 221 in this embodiment are installed along the outer periphery of the two magnetic conduction columns 212 so as to surround them, and one coil winding is formed, but the present invention is not limited thereto. For example, in another embodiment of the present invention, the winding design of the plurality of printed wirings 221 on the coil circuit board 22 includes winding methods such as layer winding, concentric winding, or wave winding, in addition to the winding methods of (a) and (b) in FIG. 5 above. These are winding methods that those skilled in the art can easily come up with corresponding to the winding methods of (a) and (b) in FIG. 5, and will not be described in detail in the present invention.

[0042] [Embodiment 3] Referring to FIG. 7, Embodiment 3 of the present invention is shown. Since this embodiment is similar to the above embodiments, in this embodiment, the common points with the above embodiments will not be described in detail, and the differences when this embodiment is compared with Embodiment 1 above will be generally described as follows.

[0043] As shown in FIG. 7, the number of the at least one coil circuit board 22 is plural and corresponds to the number of the plurality of magnetic conduction columns 212. In this embodiment, the number of the at least one coil circuit board 22 is 12 corresponding to the number of the plurality of magnetic conduction columns 212. One fixing through hole 222 is provided on each of the coil circuit boards 22, and the fixing through holes 222 of each of the coil circuit boards 22 are set on the plurality of magnetic conduction columns 212. Each of the coil circuit boards 22 has the printed wiring 221, and the printed wiring 221 on each of the coil circuit boards 22 is arranged so as to surround the fixing through hole 222.

[0044] Specifically, in this embodiment, a plurality of the coil circuit boards 22 are respectively combined with a plurality of the magnetic conduction columns 212 to form a plurality of the coil windings, but the present invention is not limited thereto. For example, in other embodiments not illustrated in the present invention, one coil circuit board 22 can form two or more printed wirings 221 to form two or more coil windings.

Industrial Applicability

[0045] [Technical Effects of Embodiments of the Present Invention] To sum up, the motor structure and its stator assembly disclosed in the embodiments of the present invention can achieve the purposes of improving the switching speed of the motor control circuit, and having low inductance, high power density, and small volume, etc., due to technical features such as "a plurality of printed wirings on at least one coil circuit board are respectively arranged so as to surround a plurality of magnetic conduction columns", and "the material of the stator core is a ferrite core or other magnetic materials".

[0046] The content disclosed above is only a preferred and feasible embodiment of the present invention, and the scope of the claims of the present invention is not limited thereto. Therefore, all equivalent technical modifications made using the content of the specification and drawings of the present invention are included in the scope of the claims of the present invention.

Explanation of Reference Numerals

[0047] 100...Motor Structure 1...Housing 2...Stator Assembly 21...Stator Core 211...Core Body 2111...Through Hole 2112...First Side 2113...Second Side 212...Magnetic Conductive Column 22...Coil Circuit Board 22a...First Layer Coil Circuit Board 22b...Second Layer Coil Circuit Board 22c...Third Layer Coil Circuit Board 221...Printed Wiring 2211...Annular Conductive Pattern 2211a...First Annular Conductive Pattern 2211b...Second Annular Conductive Pattern 2211c...Third Annular Conductive Pattern 222...Fixing Perforation 23...Via Hole 3...Rotor Assembly 31...Rotor Bearing 32...Rotating Shaft 4...Control Circuit

Claims

1. A motor structure comprising a housing, a stator assembly installed within the housing, and a rotor assembly installed within the housing, wherein the stator assembly includes a stator core having a core body and a plurality of magnetic conduction columns installed on the core body, and at least one coil circuit board having a plurality of printed wirings corresponding to the number of the plurality of magnetic conduction columns, a through hole is formed at the center of the core body, and the plurality of magnetic conduction columns are erected on the core body while surrounding the through hole, the plurality of printed wirings are respectively installed so as to surround the plurality of magnetic conduction columns, and the rotor assembly is rotatable by the stator assembly.

2. The plurality of magnetic conduction columns are evenly distributed in the through hole, the number of the at least one coil circuit board is one, a plurality of fixing through holes corresponding to the number of the plurality of magnetic conduction columns are formed in the coil circuit board, the plurality of fixing through holes are respectively used to penetrate the plurality of magnetic conduction columns, and the plurality of printed wirings on the coil circuit board are respectively installed so as to surround the plurality of fixing through holes. The motor structure according to Claim 1.

3. The coil circuit board is a multilayer circuit board, the multilayer circuit board includes a plurality of circuit boards, each printed wiring includes a plurality of annular conductive patterns on each layer of the circuit board, the plurality of annular conductive patterns are installed at intervals from each other, the diameters of the plurality of annular conductive patterns on each layer of the circuit board increase as they are away from the fixing through hole, and each of the annular conductive patterns of adjacent circuit boards is electrically connected to each other through via holes. The motor structure according to Claim 2.

4. The plurality of magnetic conduction columns are evenly distributed in the through hole, the number of the at least one coil circuit board is plural corresponding to the number of the plurality of magnetic conduction columns, fixing through holes are provided in each coil circuit board, the fixing through holes of the plurality of coil circuit boards are respectively set on the plurality of magnetic conduction columns, each coil circuit board has the printed wiring, and the printed wiring on each coil circuit board is installed so as to surround the fixing through hole. The motor structure according to Claim 1.

5. Each of the coil circuit boards has a multilayer circuit board, and the printed wiring of each of the coil circuit boards includes a plurality of annular conductive patterns on each layer of the circuit board. The plurality of annular conductive patterns are installed at intervals from each other, and the diameters of the plurality of annular conductive patterns on each layer of the circuit board increase as they are farther from the fixed through-hole. Each of the annular conductive patterns of adjacent circuit boards is electrically connected to each other through via holes. The motor structure according to claim 4.

6. The rotor assembly includes a rotor bearing and a rotating shaft installed on the rotor bearing, and the rotating shaft is located at the axis center of the rotor bearing. The motor structure according to claim 1.

7. It further includes a control circuit board, and on the control circuit board, a control circuit is provided that is electrically connected to the stator assembly and the rotor assembly to control the stator assembly and the rotor assembly, thereby rotating the rotor assembly within the through-hole of the stator assembly. The motor structure according to claim 1.

8. The motor structure further includes a control circuit integrated on the coil circuit board. The control circuit is electrically connected to the stator assembly and the rotor assembly to control the stator assembly and the rotor assembly, thereby rotating the rotor assembly within the through-hole of the stator assembly. The motor structure according to claim 1.

9. The core body and the plurality of magnetic conduction columns are integrally formed, and the material of the stator core is a ferrite core. The motor structure according to claim 1.

10. A stator core having a core body and a plurality of magnetic conduction columns installed on the core body, At least one coil circuit board having a plurality of printed wirings corresponding to the number of the plurality of magnetic conduction columns, A through-hole is formed at the center of the core body, and the plurality of magnetic conduction columns are erected on the core body while surrounding the through-hole, The plurality of printed wirings are each installed so as to surround the plurality of magnetic conduction columns. The stator assembly of the motor structure.

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