Inductance device and frequency converter

Abstract

The utility model is applicable to the technical field of electronic components, and provides an inductance device and a frequency converter, the inductance device comprises a magnetic ring body, a support guide pillar and a shell, and the frequency converter comprises any one of the inductance devices. The first connecting structure is arranged at the first end of the supporting guide column, the second connecting structure is arranged at the second end of the supporting guide column, and the supporting guide column can be connected with other electrical elements through the first connecting structure and the second connecting structure. The first connecting structure and the second connecting structure are arranged at the two ends of the supporting guide column respectively, and the supporting guide column is connected with other parts through the first connecting structure and the second connecting structure so as to achieve the purpose of installation of the inductance device. On the basis that the requirement for fixing the inductance device is met, the supporting guide column is arranged in the mounting hole in the magnetic ring body in a penetrating mode, and the occupied size after the inductance device is mounted is reduced.

Description

Technical Field

[0001] This utility model belongs to the field of electronic component technology, and in particular relates to an inductor and a frequency converter. Background Technology

[0002] Inductors are an important component of frequency converters. During operation, inductors can be placed on the input, output, or bus sides of the frequency converter. They filter the internal components, removing high-frequency noise and interference signals such as spikes and pulses from within the frequency converter or on the motor side. This confines these interference signals within the frequency converter, protecting the relative purity and stability of the AC power supply and improving the operational stability and reliability of the frequency converter. However, most existing inductors currently suffer from the technical problem of occupying a large amount of space after installation, increasing the difficulty of structural design. Utility Model Content

[0003] The purpose of this utility model is to provide an inductor device and a frequency converter, which aims to solve the technical problem that inductors occupy a large space after installation in the prior art.

[0004] This invention is implemented as follows: Firstly, it provides an inductor device, comprising:

[0005] A magnetic ring body having a mounting hole that penetrates the magnetic ring body;

[0006] A support guide post is inserted into the mounting hole. A first connecting structure is provided at the first end of the support guide post, and a second connecting structure is provided at the second end of the support guide post. Both the first and second connecting structures are used to connect the support guide post to other electrical components.

[0007] The outer shell is at least partially covered outside the magnetic ring body, and at least another part is located between the mounting hole and the support guide post, for separating the magnetic ring body from the support guide post.

[0008] In an optional embodiment, the first connection structure includes a connecting post disposed at the first end, and the connecting post is coaxially disposed with the support guide post, and the periphery of the connecting post is provided with a first thread for threadedly connecting the connecting post with other components.

[0009] In an optional embodiment, the second connection structure includes a connection hole disposed at the first end, and the connection hole is coaxially disposed with the support guide post, and the inner wall of the connection hole is provided with a second thread for threadedly connecting the connection hole with other components.

[0010] In one alternative embodiment, the outer shell includes a first assembly cover and a second assembly cover, which are interlocked with each other.

[0011] In an optional embodiment, the first assembled cover includes a first main cover body and a first inner extension body. A first end of the first inner extension body is connected to the inner wall of the first main cover body, and a second end of the first inner extension body extends toward the opening of the first main cover body. The second assembled cover includes a second main cover body and a second inner extension body. A first end of the second inner extension body is connected to the inner wall of the second main cover body, and a second end of the second inner extension body extends toward the opening of the second main cover body. When the first assembled cover and the second assembled cover are fastened together, the first main cover body and the second assembled cover form the portion of the outer shell that is covered outside the magnetic ring body. The second end of the first inner extension body abuts against the second end of the second inner extension body. The first inner extension body and the second inner extension body form the portion of the outer shell located between the mounting hole and the support guide post.

[0012] In one optional embodiment, the cross-section of the support guide post is circular or regular polygonal, and the first inner body and the second inner body are provided with through holes for the support guide post to pass through, the shape of the through holes being adapted to the cross-sectional shape of the support guide post.

[0013] In an optional embodiment, a first positioning structure is provided between the second end of the first inner extension body and the second end of the second inner extension body. The first positioning structure includes a first plug-in member disposed at the second end of the first inner extension body and a first plug-in groove disposed at the second end of the second inner extension body. The first plug-in member and the first plug-in groove are plugged into each other.

[0014] In an optional embodiment, a second positioning structure is provided between the first main cover and the second main cover. The second positioning structure includes a second plug and a second plug groove. The second plug is disposed at the opening of the second main cover, and the second plug groove is disposed at the opening of the first main cover. The second plug and the second plug groove are plugged into each other.

[0015] In one alternative embodiment,

[0016] The second end of the first epitaxial body is fixed to the second end of the second epitaxial body by adhesive bonding.

[0017] And / or, the inner wall of the through hole is fixed to the outer wall of the support guide post by adhesive bonding;

[0018] And / or, the first main cover and the second main cover are fixed by adhesive bonding;

[0019] And / or, the magnetic ring is also fixed to the inner wall of the outer shell by adhesive bonding.

[0020] In a second aspect, a frequency converter is provided, comprising the inductor device described in any of the preceding claims.

[0021] The technical advantages of this invention compared to existing technologies are as follows: A support guide post is inserted into a mounting hole on the magnetic ring body, and at least a portion of the outer shell covers the outside of the magnetic ring body to protect it. Simultaneously, at least another portion of the outer shell is located between the mounting hole and the support guide post, isolating the magnetic ring body from the support guide post. Furthermore, a first connecting structure is provided at the first end of the support guide post, and a second connecting structure is provided at the second end. The support guide post can be connected to other electrical components through the first and second connecting structures. Compared to existing inductor devices, by providing a first and second connecting structure at both ends of the support guide post and connecting it to other components through these structures, the purpose of installing the inductor device is achieved. While meeting the requirements for fixing the inductor device, by inserting the support guide post into the mounting hole on the magnetic ring body, the volume occupied by the inductor device after installation is reduced, and the production cost of the inductor device is also lowered.

[0022] It is understandable that the beneficial effects of the second aspect mentioned above can be found in the relevant descriptions in the first aspect mentioned above, and will not be repeated here. Attached Figure Description

[0023] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments of this utility model or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of the structure of the inductor device provided in this embodiment of the utility model;

[0025] Figure 2 This is an exploded structural diagram of the inductor device provided in this embodiment of the utility model;

[0026] Figure 3 This is a cross-sectional view of the inductor device provided in this embodiment of the utility model;

[0027] Figure 4 This is a schematic diagram of the outer shell used in an embodiment of this utility model;

[0028] Figure 5 This is a diagram illustrating the filtering effect of a frequency converter without an inductor, provided in this embodiment of the utility model.

[0029] Figure 6 This is a diagram illustrating the filtering effect of the inverter mounting inductor device provided in this embodiment of the utility model.

[0030] Explanation of reference numerals in the attached figures:

[0031] 1. Magnetic ring body; 11. Mounting hole; 2. Support guide post; 21. First connecting structure; 211. Connecting post; 212. First thread; 22. Second connecting structure; 221. Connecting hole; 222. Second thread; 3. Outer shell; 31. First assembly cover; 311. First main cover body; 312. First inner extension body; 32. Second assembly cover; 321. Second main cover body; 322. Second inner extension body; 4. First positioning structure; 41. First connector; 42. First connector groove; 5. Second positioning structure; 51. Second connector; 52. Second connector groove. Detailed Implementation

[0032] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0033] In the description of this utility model, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0034] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0035] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0036] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments.

[0037] Please refer to Figures 1 to 4 As shown in the present invention, in a first aspect, an inductor device is provided, including a magnetic ring 1, a support post 2, and a housing 3. The magnetic ring 1 has a mounting hole 11 that penetrates the magnetic ring 1. The support post 2 passes through the mounting hole 11, and a first connecting structure 21 is provided at a first end of the support post 2, and a second connecting structure 22 is provided at a second end of the support post 2. Both the first connecting structure 21 and the second connecting structure 22 are used to connect the support post 2 to other electrical components. The housing 3 at least partially covers the outside of the magnetic ring 1, and at least another part is located between the mounting hole 11 and the support post 2, for isolating the magnetic ring 1 from the support post 2.

[0038] Specifically, the magnetic ring 1 refers to a magnetic component with a certain volume. The magnetic ring 1 is generally ring-shaped and has a mounting hole 11 that penetrates it. The support post 2 refers to a columnar structure with a certain length. The support post 2 is generally made of a conductive material, such as copper, aluminum, or alloys. The outer shell 3 refers to a shell-like structure with a certain accommodating space. The outer shell 3 can be configured as a ring-shaped cavity. The magnetic ring 1 is placed within the ring cavity, and the support post 2 passes through the outer shell 3 and the mounting hole 11. The outer shell 3 is generally made of an insulating material, such as polyurethane, plastic, or other polymer materials. The first connecting structure 21 and the second connecting structure 22 both refer to structures used to connect the support post 2 to other components, such as a PCB (Printed Circuit Board) or a heat sink. The first connecting structure 21 and the second connecting structure 22 can be plug-in, threaded, or snap-fit ​​structures. Since the support post 2 is made of a conductive material, electrical connection can also be achieved when connecting the support post 2 to other components.

[0039] The inductor device provided in this embodiment of the invention has a support post 2 inserted into a mounting hole 11 on a magnetic ring 1. At least a portion of a housing 3 covers the outside of the magnetic ring 1 to protect it, while at least another portion of the housing 3 is located between the mounting hole 11 and the support post 2 to isolate the magnetic ring 1 from the support post 2. Furthermore, a first connecting structure 21 is provided at the first end of the support post 2, and a second connecting structure 22 is provided at the second end of the support post 2. The support post 2 can be connected to other electrical components through the first connecting structure 21 and the second connecting structure 22. Compared with inductor devices in the prior art, by providing a first connecting structure 21 and a second connecting structure 22 at both ends of the support post 2, and connecting the support post 2 to other components through the first connecting structure 21 and the second connecting structure 22, the purpose of installing the inductor device is achieved. While meeting the requirements for fixing the inductor, by inserting the support guide post 2 into the mounting hole 11 on the magnetic ring body 1, the volume occupied by the inductor after installation is reduced, which makes the structural design more flexible and reduces production costs.

[0040] Furthermore, it should be noted that by providing a first connecting structure 21 at the first end of the support guide post 2 and a second connecting structure 22 at the second end of the support guide post 2, the inductor can be connected to multiple other components simultaneously through the support guide post 2, making the installation of the inductor more flexible and convenient.

[0041] In one embodiment, see Figure 3 The first connecting structure 21 includes a connecting post 211 disposed at the first end, and the connecting post 211 is coaxially arranged with the support guide post 2. The circumference of the connecting post 211 is provided with a first thread 212 for threaded connection between the connecting post 211 and other components. Specifically, the connecting post 211 refers to a columnar structure of a certain length, and its cross-section is usually circular, making it easier for the connecting post 211 to rotate relative to other components. The first thread 212 refers to a threaded structure disposed on the surface of the connecting post 211, and the first thread 212 is generally arranged along the axial direction of the connecting post 211. By providing the first thread 212 on the surface of the connecting post 211 to form a threaded post, the first end of the support guide post 2 can be directly connected to the threaded hole on the PCB board or heat sink through the connecting post 211, thereby making the connection between the support guide post 2 and other components more convenient, and also making the installation of the inductor device more convenient.

[0042] In one embodiment, see Figure 3The second connection structure 22 includes a connection hole 221 disposed at the first end, and the connection hole 221 is coaxially arranged with the support guide post 2. The inner wall of the connection hole 221 is provided with a second thread 222 for threaded connection of the connection hole 221 with other components. Specifically, the connection hole 221 refers to a hole structure with a certain depth, and the connection hole 221 is generally a circular hole. The second thread 222 refers to a thread structure disposed on the inner wall of the connection hole 221, and the second thread 222 is generally arranged around the axis of the connection hole 221. By providing a second thread 222 on the inner wall of the connection hole 221 to form a threaded hole, the second end of the support guide post 2 can be threadedly connected with studs or screws on other components, giving the support guide post 2 multiple connection methods with other components and improving the flexibility of inductor installation.

[0043] In an optional embodiment, please refer to Figure 1 The dimensions of the connecting hole 221 and the connecting post 211 are matched, and the first thread 212 is also matched with the second thread 222. Specifically, the matching of the dimensions of the connecting hole 221 and the connecting post 211 allows the connecting post 211 to be inserted into the connecting hole 221, while the matching of the first thread 212 and the second thread 222 allows them to mesh with each other. The matching of the connecting hole 221 and the connecting post 211, as well as the matching of the first thread 212 and the second thread 222, allows the first end of the supporting guide post 2 to be connected to the second end of the supporting guide post 2 on another inductor during use, thereby realizing series connection between multiple inductors. This allows the inductors to be freely connected according to the application scenario, improving the flexibility of the connection.

[0044] In one embodiment, see Figure 2 and Figure 4 The outer shell 3 includes a first assembly cover 31 and a second assembly cover 32, which are interlocked together. Specifically, both the first assembly cover 31 and the second assembly cover 32 refer to cover structures with a certain depth and accommodating space. By interlocking the first assembly cover 31 and the second assembly cover 32 to form the outer shell 3, the assembly of the outer shell 3 can be made more convenient and quick.

[0045] In one embodiment, see Figure 3The first assembly cover 31 includes a first main cover body 311 and a first inner extension body 312. The first end of the first inner extension body 312 is connected to the inner wall of the first main cover body 311, and the second end of the first inner extension body 312 extends toward the opening of the first main cover body 311. The second assembly cover 32 includes a second main cover body 321 and a second inner extension body 322. The first end of the second inner extension body 322 is connected to the inner wall of the second main cover body 321, and the second end of the second inner extension body 322 extends toward the opening of the second main cover body 321. When the first assembly cover 31 and the second assembly cover 32 are fastened together, the first main cover body 311 and the second assembly cover 32 form the outer shell 3 covering the part of the magnetic ring body 1. The second end of the first inner extension body 312 abuts against the second end of the second inner extension body 322. The first inner extension body 312 and the second inner extension body 322 form the part of the outer shell 3 located between the mounting hole 11 and the support guide post 2. Specifically, the first main cover 311 and the second main cover 321 both refer to cover structures with a certain amount of accommodating space. The shape of the first main cover 311 and the second main cover 321 can be columnar, hemispherical, or cuboid, etc. Both the first inner extension body 312 and the second inner extension body 322 refer to components with a certain length. The first inner extension body 312 and the second inner extension body 322 are usually cylindrical. By connecting the first end of the first inner extension body 312 to the inner wall of the first main cover 311 and extending the second end towards the opening of the first main cover 311, and at the same time connecting the first end of the second inner extension body 322 to the inner wall of the second main cover 321 and extending the second end towards the opening of the second main cover 321, when the first assembly cover 31 and the second assembly cover 32 are fastened together, the first main cover 311 and the second assembly cover 32 form the outer shell 3 covering the part of the magnetic ring body 1. The second end of the first inner extension body 312 abuts against the second end of the second inner extension body 322. The first inner extension body 312 and the second inner extension body 322 form the part of the outer shell 3 located between the mounting hole 11 and the support guide post 2, thereby making the assembly of the outer shell 3 more convenient.

[0046] In an optional embodiment, please refer to Figure 3 The first main cover 311 and the first inner extension 312 are integrally molded structures, and the second main cover 321 and the second inner extension 322 are also integrally molded structures. Specifically, the first main cover 311 and the first inner extension 312 can be integrally molded by injection molding, and similarly, the second main cover 321 and the second inner extension 322 can also be integrally molded by injection molding, thereby improving the overall strength of the outer shell 3 and making assembly more convenient and faster.

[0047] In one embodiment, see Figure 2The cross-section of the support guide post 2 is circular or a regular polygon. The first inner extension 312 and the second inner extension 322 are provided with through holes for the support guide post 2 to pass through. The shape of the through holes matches the cross-sectional shape of the support guide post 2. Specifically, the cross-section of the support guide post 2 refers to the section cut by a plane perpendicular to the axis of the support guide post 2. By setting the cross-section of the support guide post 2 to be circular, the support guide post 2 can withstand greater radial pressure. Furthermore, by making the cross-section of the support guide post 2 a regular polygon, such as hexagonal or pentagonal, and by ensuring that the shape of the through holes on the first inner extension 312 and the second inner extension 322 matches the cross-sectional shape of the support guide post 2, rotation of the outer shell 3 relative to the support guide post 2 can be prevented.

[0048] In one embodiment, see Figures 2 to 4 A first positioning structure 4 is provided between the second end of the first inner extension body 312 and the second end of the second inner extension body 322. The first positioning structure 4 includes a first insertion member 41 disposed at the second end of the first inner extension body 312 and a first insertion groove 42 disposed at the second end of the second inner extension body 322. The first insertion member 41 and the first insertion groove 42 are inserted into each other. Specifically, the first positioning structure 4 refers to a structure or component that positions the relative position between two components. The first insertion member 41 refers to a component with a certain height, and the first insertion member 41 can be plate-shaped, block-shaped, or column-shaped, etc. The first insertion groove 42 refers to a groove structure with a certain depth, and the shape of the first insertion groove 42 can be adapted to the first insertion member 41. By providing a first positioning structure 4 between the second end of the first inner extension 312 and the second end of the second inner extension 322, the first connector 41 can be inserted into the first connector slot 42 during the assembly of the outer shell 3. The second end of the first inner extension 312 and the second end of the second inner extension 322 can be positioned through the interaction between the first connector 41 and the first connector slot 42, making the assembly of the outer shell 3 more precise.

[0049] In one embodiment, see Figures 2 to 4A second positioning structure 5 is provided between the first main cover 311 and the second main cover 321. The second positioning structure 5 includes a second connector 51 and a second connector groove 52. The second connector 51 is disposed at the opening of the second main cover 321, and the second connector groove 52 is disposed at the opening of the first main cover 311. The second connector 51 and the second connector groove 52 are engaged. Specifically, the second positioning structure 5 refers to a structure or component that positions the relative position between two components. The second connector 51 refers to a component with a certain height, and the second connector 51 can be plate-shaped, block-shaped, or column-shaped, etc. The second connector groove 52 refers to a groove structure with a certain depth, and the shape of the second connector groove 52 can be adapted to the second connector 51. By providing a second positioning structure 5 between the first main cover 311 and the second main cover 321, the second connector 51 can be inserted into the second connector slot 52 during the assembly of the outer shell 3. Through the interaction between the second connector 51 and the second connector slot 52, the first main cover 311 and the second main cover 321 can be positioned, making the positions of the first main cover 311 and the second main cover 321 more accurate when they are assembled together.

[0050] In one embodiment, see Figure 3 The second end of the first inner extension body 312 is fixed to the second end of the second inner extension body 322 by adhesive bonding. And / or, the inner wall of the hole is fixed to the outer wall of the support guide post 2 by adhesive bonding. And / or, the first main cover body 311 and the second main cover body 321 are fixed by adhesive bonding. And / or, the magnetic ring body 1 and the inner wall of the outer shell 3 are also fixed by adhesive bonding. Specifically, adhesive bonding refers to a fixing method in which adhesive is applied to the surfaces of two objects to be connected, and then they are pressed together to achieve the connection. In this embodiment, the second end of the first inner extension body 312 and the second end of the second inner extension body 322 are fixed by adhesive bonding. An adhesive such as white glue can be applied to both the second end of the first inner extension body 312 and the second end of the second inner extension body 322, and then the second end of the first inner extension body 312 and the second end of the second inner extension body 322 are pressed together. After the adhesive dries, the first inner extension body 312 and the second inner extension body 322 are bonded together. Similarly, adhesive such as white glue can be applied to the inner wall of the through hole. After the support guide post 2 is inserted into the through hole and the adhesive dries, the support guide post 2 is adhered to the inner wall of the through hole. In addition, adhesive such as white glue can be applied to the openings of the first main cover 311 and the second main cover 321, as well as the inner wall of the outer shell 3, which makes the assembly of the outer shell 3 and the fixing of the magnetic ring 1 more convenient and secure.

[0051] It should be noted that white glue can refer to white epoxy glue, which has good electrical insulation and mechanical properties. Its main components are epoxy resin and curing agent, which can be mixed in a specific ratio and cured under certain conditions to form a strong bond, thereby achieving the bonding and fixing of two objects together.

[0052] Secondly, a frequency converter is provided, including the inductor device of any of the above-mentioned embodiments. It is understood that the beneficial effects of the second aspect can be found in the relevant description in the first aspect above, and will not be repeated here.

[0053] In addition, please see Figure 5 and Figure 6 As shown, where Figure 5 This diagram shows the filtering effect when the frequency converter is not equipped with an inductor. Figure 6 The diagram shows the filtering effect after installing an inductor on the frequency converter. Figure 5 and Figure 6 The comparison shows that installing an inductor device can achieve a significant suppression effect, thereby enabling the product to have better electromagnetic compatibility conducted emission performance, thus improving the performance and competitiveness of the frequency converter.

[0054] The above are merely preferred embodiments of the present utility model, and only specifically describe the technical principles of the present utility model. These descriptions are only for explaining the principles of the present utility model and should not be construed as limiting the scope of protection of the present utility model in any way. Based on this explanation, any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model, as well as other specific embodiments of the present utility model that can be conceived by those skilled in the art without creative effort, should be included within the scope of protection of the present utility model.

Claims

1. An inductor device, characterized in that, include: A magnetic ring body having a mounting hole that penetrates the magnetic ring body; A support guide post is inserted into the mounting hole. A first connecting structure is provided at the first end of the support guide post, and a second connecting structure is provided at the second end of the support guide post. Both the first and second connecting structures are used to connect the support guide post to electrical components. The outer shell, at least partially covering the outside of the magnetic ring body, and at least another part located between the mounting hole and the support guide post, is used to isolate the magnetic ring body from the support guide post.

2. The inductor device as claimed in claim 1, characterized in that, The first connection structure includes a connecting post disposed at the first end, and the connecting post is coaxially arranged with the supporting guide post, and the circumference of the connecting post is provided with a first thread.

3. The inductor device as described in claim 2, characterized in that, The second connection structure includes a connection hole disposed at the first end, and the connection hole is coaxially disposed with the support guide post, and the inner wall of the connection hole is provided with a second thread.

4. The inductor device according to any one of claims 1 to 3, characterized in that, The outer shell includes a first assembly cover and a second assembly cover, which are interlocked with each other.

5. The inductor device as claimed in claim 4, characterized in that, The first assembled cover includes a first main cover body and a first inner extension body. The first end of the first inner extension body is connected to the inner wall of the first main cover body, and the second end of the first inner extension body extends toward the opening of the first main cover body. The second assembled cover includes a second main cover body and a second inner extension body. The first end of the second inner extension body is connected to the inner wall of the second main cover body, and the second end of the second inner extension body extends toward the opening of the second main cover body. When the first assembled cover and the second assembled cover are fastened together, the first main cover body and the second assembled cover form the portion of the outer shell that is covered outside the magnetic ring body. The second end of the first inner extension body abuts against the second end of the second inner extension body. The first inner extension body and the second inner extension body form the portion of the outer shell located between the mounting hole and the support guide post.

6. The inductor device as claimed in claim 5, characterized in that, The cross-section of the support guide post is circular or regular polygonal. The first inner extension body and the second inner extension body are provided with through holes for the support guide post to pass through. The shape of the through holes is adapted to the cross-sectional shape of the support guide post.

7. The inductor device as claimed in claim 5, characterized in that, A first positioning structure is provided between the second end of the first inner body and the second end of the second inner body. The first positioning structure includes a first plug-in member disposed at the second end of the first inner body and a first plug-in groove disposed at the second end of the second inner body. The first plug-in member and the first plug-in groove are plugged into each other.

8. The inductor device as claimed in claim 7, characterized in that, A second positioning structure is provided between the first main cover and the second main cover. The second positioning structure includes a second plug and a second plug groove. The second plug is disposed at the opening of the second main cover, and the second plug groove is disposed at the opening of the first main cover. The second plug and the second plug groove are plugged into each other.

9. The inductor device as claimed in claim 6, characterized in that, The second end of the first epitaxial body is fixed to the second end of the second epitaxial body by adhesive bonding. And / or, the inner wall of the through hole is fixed to the outer wall of the support guide post by adhesive bonding; And / or, the first main cover and the second main cover are fixed by adhesive bonding; And / or, the magnetic ring is also fixed to the inner wall of the outer shell by adhesive bonding.

10. A frequency converter, characterized in that, Including the inductor as described in any one of claims 1 to 9.

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